CN114185398A

CN114185398A - Folding device and electronic equipment

Info

Publication number: CN114185398A
Application number: CN202011495418.6A
Authority: CN
Inventors: 徐正一; 马春军; 牛林辉; 刘婷; 李云勇; 王岗超; 管城豪
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-09-14
Filing date: 2020-12-17
Publication date: 2022-03-15

Abstract

The application discloses folding device and electronic equipment. The electronic equipment comprises a folding device and a flexible display screen, wherein the folding device is used for bearing the flexible display screen. The elastic assembly of the folding device may transmit elastic force to the flexible display screen through the housing of the folding device. The force far away from the main shaft direction, which is applied to the flexible display screen when the electronic equipment is in the flattening state, is larger than the force far away from the main shaft direction, which is applied to the flexible display screen when the electronic equipment is in the closing state. Therefore, when the electronic equipment is unfolded from the folded state to the flattened state, the layered dislocation of the flexible display screen can be reduced, the crease recovery of the flexible display screen is accelerated, and the flattening effect of the flexible display screen is improved.

Description

Folding device and electronic equipment

The present application claims priority from the application of the chinese patent application entitled "folding structure and electronic device" filed by the national intellectual property office on 14/9/2020, application number 202010959362.9, the entire contents of which are incorporated herein by reference.

Technical Field

The application relates to the technical field of foldable electronic products, in particular to a folding device and electronic equipment.

Background

The flexible display screen is widely applied to various foldable electronic devices due to its characteristics of lightness, thinness, insusceptibility to breakage and the like. The flexible display screen can obtain a larger display area in an unfolded state, and the visual effect is improved. The flexible display screen is under fold condition, and the electronic equipment volume is less, and the user of being convenient for carries. The foldable electronic device further comprises a folding device for bearing the flexible display screen, the folding device generally comprises two shells and a rotating mechanism connected between the two shells, and the two shells are relatively folded or relatively unfolded through the deformation of the rotating mechanism and drive the flexible display screen to be folded or unfolded. However, because the bending area of the flexible display screen can generate tension in the bending process, the middle part of the flexible display screen can generate creases in the unfolded state, so that the smoothness of the flexible display screen is reduced, and the user experience is influenced.

Disclosure of Invention

The application aims to provide a folding device and electronic equipment. The folding device is used for bearing the flexible display screen, and when the electronic equipment is unfolded from a folding state to a flattening state, the force far away from the direction of the main shaft, which is borne by the flexible display screen, is greater than the force far away from the direction of the main shaft, which is borne by the flexible display screen in a closing state. Therefore, the phenomenon of layered dislocation of the flexible display screen when the electronic equipment is unfolded from the folded state to the flattened state can be reduced, the crease recovery of the flexible display screen is accelerated, and the flattening effect of the flexible display screen is improved.

In a first aspect, the present application provides a folding device. The folding device can be applied to electronic equipment, and the folding device is used for bearing a flexible display screen of the electronic equipment. The flexible display screen comprises a first non-bending part, a bending part and a second non-bending part which are sequentially arranged. The folding device comprises a first shell, a second shell, a first elastic component and a shaft. The first shell and the second shell are respectively positioned on two sides of the shaft. The first shell is fixedly connected with the first non-bending part, and the second shell is fixedly connected with the second non-bending part. The first elastic assembly is located between the shaft and the first shell and is in rotating connection with the shaft, and the first elastic assembly is fixedly connected with the first shell. The first structural member abuts the second structural member, wherein the first structural member is part of the first elastic assembly and the second structural member is part of the shaft. The first elastic component generates elastic force through the compression amount in the first direction, and at least part of the elastic force is transmitted to the bending part through the first shell and the first non-bending part, wherein the first direction is perpendicular to the length extending direction of the shaft, and the first direction is parallel to the first shell. When the electronic device is in a flattening state, a first position of the first structural member is abutted to a first position of the second structural member, and the compression amount of the first elastic assembly in the first direction is a first compression amount. The first shell and the first elastic component rotate relative to the shaft, the second shell rotates relative to the shaft, and the electronic device is converted from the flat state to the folded state. When the electronic device is in a folded state, the second position of the first structural member is abutted to the second position of the second structural member, the compression amount of the first elastic assembly in the first direction is a second compression amount, and the second compression amount is smaller than the first compression amount. Wherein the first position of the first structural member is different from the second position of the first structural member, and/or the first position of the second structural member is different from the second position of the second structural member.

In this application, because first casing and the first non-portion fixed connection of bending of flexible display screen, consequently, when electronic equipment was in the flat state of exhibition, the elasticity that first elastic component produced can transmit the first non-portion of bending of flexible display screen through first casing, and then the crease of accelerating flexible display screen resumes to improve the flat effect of exhibition of screen.

In one possible implementation manner, when the electronic device is in a flattened state, a force transmitted to the bent portion through the first housing and the first non-bent portion is a first force; when the electronic device is in a folded state, the force transmitted to the bent part through the first shell and the first non-bent part is a second force, and the second force is smaller than the first force. Therefore, when the electronic device is unfolded from the folded state to the unfolded state, the force transmitted to the first non-bent portion of the flexible display screen through the first housing is greater, thereby accelerating the recovery of the fold.

In a possible implementation manner, the shaft is rotatably connected with the first elastic component through a first rotating shaft. When the electronic equipment is in a flattening state, the distance between the axis of the first rotating shaft and the first position of the shaft is a first distance, and the projection length of the first distance on the first plane is a first projection length. When the electronic equipment is in a folded state, the distance between the axis of the first rotating shaft and the second position of the shaft is a second distance, the projection length of the second distance on the first plane is a second projection length, and the second projection length is smaller than the first projection length. The first plane is a plane where a surface of the first shell fixedly connected with the first non-bending part is located.

In this implementation, when the electronic device is folded to different states, the projection lengths of the distances from the contact points of the first structural member and the second structural member to the axis are different, so that the elastic deformation amount of the first elastic assembly is different, and the force transmitted to the flexible display screen through the first shell is different.

In a possible implementation, first elastic component is provided with the connecting hole, and the axle rotates through first pivot with first elastic component to be connected, specifically includes: the first rotating shaft penetrates through the connecting hole.

In one possible implementation, the connection hole includes a first sidewall and a second sidewall. The distance between the axis of the first rotating shaft and the first side wall is a first distance, the distance between the axis of the first rotating shaft and the second side wall is a second distance, and the first distance is smaller than the second distance. In response to a third force acting on the first elastic assembly, the connecting hole moves relative to the first rotating shaft, the distance between the axis of the first rotating shaft and the first side wall is a third distance, the distance between the axis of the first rotating shaft and the second side wall is a fourth distance, and the third distance is larger than the fourth distance. The third force direction is a direction in which the second side wall faces the first side wall, a distance between the first side wall and the first shell is a fifth distance, a distance between the second side wall and the first shell is a sixth distance, and the fifth distance is smaller than the sixth distance.

In this implementation, through the shape design of connecting hole, folding device can become slightly long along with the ageing lengthening of flexible display screen for flexible display screen and folding device more laminate, weaken the crease of flexible display screen when flexible display screen is ageing.

In a possible implementation, the shaft is provided with the connecting hole, and the shaft is connected through first pivot rotation with first elastic component, specifically includes: the first rotating shaft penetrates through the connecting hole.

In one possible implementation, the connection hole includes a first sidewall and a second sidewall. The distance between the axis of the first rotating shaft and the first side wall is a first distance, the distance between the axis of the first rotating shaft and the second side wall is a second distance, and the first distance is greater than the second distance. In response to a third force acting on the first elastic assembly, the first rotating shaft moves relative to the connecting hole, the distance between the axis of the first rotating shaft and the first side wall is a third distance, the distance between the axis of the first rotating shaft and the second side wall is a fourth distance, and the third distance is smaller than the fourth distance. The third force direction is a direction in which the second side wall faces the first side wall, a distance between the first side wall and the first shell is a fifth distance, a distance between the second side wall and the first shell is a sixth distance, and the fifth distance is smaller than the sixth distance.

In a possible implementation manner, the first cross section of the connecting hole at least comprises one or more of a waist circle, an ellipse, a circle and a rectangle, wherein the first cross section is perpendicular to the length extension direction of the first rotating shaft.

In a possible implementation manner, the first elastic component includes a first fixing frame, and at least a portion of the first fixing frame is fixedly connected to the first housing.

In a possible implementation manner, the first elastic assembly further includes a first elastic member and a first bracket. The first elastic piece and the first bracket are arranged on the first fixing frame. At least one part of the first elastic piece is arranged between the first bracket and the first fixing frame. The first support is abutted to the second structural part, and the first elastic part is abutted to the first shell through the first fixing frame.

In one possible implementation, the first fixing frame is provided with a first mounting groove, and the first fixing frame is provided with a flange. The first support is connected with the first mounting groove in a sliding mode through the flange.

In a possible implementation, the folding device further comprises a second elastic component. The shaft includes a first rotating member and a second rotating member. The first elastic component comprises a first fixing frame, and the second elastic component comprises a second fixing frame. The first rotating member includes a first connecting assembly and a first rotating arm. The second rotating part comprises a second connecting component and a second rotating arm. The first connecting assembly comprises a sliding end and a rotating end, the sliding end of the first connecting assembly is connected with the second fixing frame in a sliding mode, and the rotating end of the first connecting assembly is connected with the first end of the first rotating arm in a rotating mode. The second end of the first rotating arm is rotatably connected with the first fixing frame through a first rotating shaft. The second connecting assembly comprises a sliding end and a rotating end, the sliding end of the second connecting assembly is connected with the first fixing frame in a sliding mode, the rotating end of the second connecting assembly is connected with the first end of the second rotating arm in a rotating mode, and the second end of the second rotating arm is connected with the second fixing frame in a rotating mode.

In one possible implementation, the first fixing frame includes a first connecting block. The first link block may be claw-shaped, and the first link block has a rotation hole. The first rotating arm comprises a claw-shaped first end, namely a second structural member, and the first end of the first rotating arm is provided with a rotating hole. The first end of the first rotating arm is connected with the first connecting block in a staggered mode, and the first rotating shaft penetrates through the rotating hole of the first connecting block and the rotating hole of the first end of the first rotating arm, so that the first end of the first rotating arm is connected with the first connecting block in a rotating mode, and the first rotating arm is connected with the first fixing frame in a rotating mode. The first ends of the first rotating arms are connected with the first connecting blocks in a staggered mode, mutual limiting can be achieved in the axial direction of the main shaft, and the connection reliability of the rotating mechanism is improved.

In one possible implementation, the second elastic assembly is located between the shaft and the second housing, the second elastic assembly is rotatably connected to the shaft, and the second elastic assembly is fixedly connected to the second housing. The third structural member abuts a fourth structural member, wherein the third structural member is part of the second spring assembly and the fourth structural member is part of the shaft. The second elastic component generates elastic force through the compression amount in the second direction, and at least part of the elastic force is transmitted to the bending part through the second shell and the second non-bending part, wherein the second direction is perpendicular to the length extending direction of the shaft, and the second direction is parallel to the second shell. The electronic equipment is in a flattening state, a first position of the third structural member is abutted to a first position of the fourth structural member, and the compression amount of the second elastic assembly in the second direction is a third compression amount. The electronic equipment is in a folded state, a second position of the third structural member is abutted to a second position of the fourth structural member, the compression amount of the second elastic assembly in the second direction is a fourth compression amount, and the fourth compression amount is smaller than the third compression amount. Wherein the first location of the third structural member is different from the second location of the third structural member, and/or the first location of the fourth structural member is different from the second location of the fourth structural member.

In this implementation, through the setting of second elastic component for the second non-portion of bending of flexible display screen is greater than the power of keeping away from the main shaft direction that closed state received in the power that the flat state received of keeping away from the main shaft direction, thereby accelerates the recovery of electronic equipment from folding flexible display screen crease when expanding, improves the roughness of flexible display screen, improves user experience.

In one possible implementation, the shaft further comprises a main shaft. The first link assembly includes a first drive arm and a first link. The second linkage assembly includes a second actuator arm and a second link. First connection assembly includes slip end and rotation end, and the slip end sliding connection second mount of first connection assembly, the rotation end of first connection assembly rotate the first end of connecting first rotation arm, specifically include: the first transmission arm comprises a sliding end and a rotating end, the sliding end of the first transmission arm is connected with the second fixing frame in a sliding mode, the rotating end of the first transmission arm is connected with the main shaft in a rotating mode, the rotating end of the first transmission arm is connected with the first connecting piece in a rotating mode, and the first connecting piece is connected with the first end of the first transmission arm in a rotating mode. The second coupling assembling includes slip end and rotation end, the first mount of slip end sliding connection of second coupling assembling, and the rotation end of second coupling assembling rotates the first end of connecting the second rotor arm, specifically includes: the second transmission arm comprises a sliding end and a rotating end, the sliding end of the second transmission arm is connected with the first fixing frame in a sliding mode, the rotating end of the second transmission arm is connected with the main shaft in a rotating mode, the rotating end of the second transmission arm is connected with the second connecting piece in a rotating mode, and the second connecting piece is connected with the first end of the second rotating arm in a rotating mode.

In the implementation mode, in the process that the first shell and the second shell are relatively unfolded to be in the flattening state, the first transmission arm rotates relative to the main shaft, the first transmission arm is linked with the first transmission arm through the first connecting piece, and the first fixing frame and the first shell are gradually far away from the main shaft; the second transmission arm rotates relative to the main shaft, the second rotating arm is linked with the second transmission arm through a second connecting piece, and the second fixing frame and the second shell are gradually far away from the main shaft. In the process that the first shell and the second shell are relatively folded to be folded, the first transmission arm rotates relative to the main shaft, the first rotation arm is linked with the first transmission arm through the first connecting piece, and the first fixing frame and the first shell are gradually close to the main shaft; the second transmission arm rotates relative to the main shaft, the second rotating arm is linked with the second transmission arm through a second connecting piece, and the second fixing frame and the second shell are gradually close to the main shaft. Therefore, in the process of relatively unfolding the first housing and the second housing, the first housing moves in the direction away from the main shaft, and the second housing moves in the direction away from the main shaft. That is, can realize that folding device pulls the motion in the casing of the in-process that flat state changes to the closed state, and folding device pushes away the motion in the casing of the in-process that the closed state changes to flat state, make folding device expand or folding in-process, can realize using flexible display screen as the deformation motion of neutral plane, thereby reduce the risk of dragging or extrudeing flexible display screen, make flexible display screen keep constant length, in order to protect flexible display screen, improve flexible display screen's reliability, make flexible display screen and electronic equipment have longer life.

In one possible embodiment, the main shaft comprises an inner shaft and an outer shaft, the outer shaft being fixedly connected to the inner shaft. The inner shaft comprises a first arc-shaped convex block and a second arc-shaped convex block, the outer shaft comprises a first arc-shaped groove and a second arc-shaped groove, the rotating end of the first transmission arm is arc-shaped and is rotationally connected with the first arc-shaped convex block and the first arc-shaped groove, and the rotating end of the second transmission arm is arc-shaped and is rotationally connected with the second arc-shaped convex block and the second arc-shaped groove.

In this implementation, all through virtual hub connection between first transmission arm and the main shaft and between second transmission arm and the main shaft, rotate connection structure simple, occupation space is little, is favorable to reducing slewing mechanism's thickness for folding device and electronic equipment are changeed and are realized frivolousization.

In one possible implementation, the main shaft includes an inner shaft and an outer shaft fixed to the inner shaft. When the first shell and the second shell are folded relatively to a closed state, the inner shaft is positioned between the outer shaft and the first fixing frame and the second fixing frame. The first transmission arm rotates around a first rotation center, the first rotation center is close to the inner shaft and far away from the outer shaft, and the first rotation center is close to the second fixing frame and far away from the first fixing frame. The second transmission arm rotates around a second rotation center, the second rotation center is close to the inner shaft and far away from the outer shaft, and the second rotation center is close to the first fixing frame and far away from the second fixing frame.

In this implementation manner, by setting the positions of the first rotation center and the second rotation center, the rotation mechanism is more likely to realize the pulling movement of the housing in the process of changing the folding device from the flat state to the closed state and the pushing movement of the housing in the process of changing the folding device from the closed state to the flat state, so as to realize the deformation movement using the flexible display screen as the neutral surface.

In addition, a plurality of three-dimensional space structures are arranged on the inner shaft and the outer shaft, through the design of the structures, a plurality of movable spaces can be formed jointly after the inner shaft and the outer shaft are assembled, and the structural part of the rotating mechanism is movably arranged in the plurality of movable spaces of the main shaft, so that the main shaft is connected. The split design of the inner shaft and the outer shaft is beneficial to reducing the manufacturing difficulty of the main shaft and improving the manufacturing precision and the product yield of the main shaft.

In a possible implementation manner, the rotating end of the first transmission arm may further include a limiting protrusion, and the limiting protrusion forms an inner position and/or an outer position of the rotating end. The limiting protrusion is used for being matched with the limiting groove of the spindle, so that the first transmission arm and the spindle are limited in the axial direction of the spindle, and the reliability of the connecting structure is improved.

In a possible implementation manner, the first rotating arm is connected with the first connecting piece through the second rotating shaft, the inner shaft and the outer shaft are arranged around to form an arc-shaped groove, and the second rotating shaft is in sliding fit with the arc-shaped groove to limit the motion track of the second rotating shaft, so that the first rotating arm can only move in the main shaft in a preset track.

In one possible implementation manner, the second fixing frame includes a first sliding groove, and the first fixing frame includes a second sliding groove. The slip end sliding connection second mount of first transmission arm specifically includes: the sliding end of the first transmission arm is connected with the first sliding groove in a sliding mode, and in the process that the electronic equipment is converted from the flat state to the folded state, the sliding end of the first transmission arm slides relative to the first sliding groove. The first mount of sliding end sliding connection of second transmission arm specifically includes: the sliding end of the second transmission arm is connected with the second sliding groove in a sliding mode, and in the process that the electronic equipment is converted from the flattening state to the folding state, the sliding end of the second transmission arm slides relative to the second sliding groove.

In one possible embodiment, the side wall of the first runner can have a recessed guide space. The sliding end of the first transmission arm is arranged on the first sliding groove and is connected with the second fixing frame in a sliding mode. The sliding end of the first drive arm includes a first flange on the peripheral side. The first flange is mounted in the guide space of the first chute. In this implementation, through the cooperation of the guide space of the first chute and the first flange of the first transmission arm, the sliding end of the first transmission arm can be guided in the sliding direction of the first chute, so that the relative sliding action between the first transmission arm and the second fixing frame is easier to realize, and the control precision is higher.

In one possible embodiment, the side wall of the second runner can have a recessed guide space. The sliding end of the second transmission arm is arranged on the second sliding groove and is connected with the first fixing frame in a sliding mode. The sliding end of the second transmission arm includes a second flange on the peripheral side. The second flange is mounted in the guide space of the second runner. In this implementation, the cooperation of the guide space through the second spout and the second flange of second transmission arm can guide the slip end of second transmission arm in the slip direction of second spout for relative sliding between second transmission arm and the first mount is changeed and is realized, control accuracy is higher.

In a possible implementation manner, the first transmission arm further includes a first limiting member, and the second transmission arm further includes a second limiting member. The first limiting part is arranged at the sliding end of the first transmission arm, and the second limiting part is arranged at the sliding end of the second transmission arm. The side wall of the first sliding chute is provided with a first convex part and a first concave part at intervals, and the side wall of the second sliding chute is provided with a second convex part and a second concave part at intervals. The first limiting part comprises a second elastic part, and the second limiting part comprises a third elastic part. The sliding end of the first transmission arm slides to a first position relative to the first sliding groove, the first limiting part is matched with the first convex part, and the compression amount of the second elastic part is a fifth compression amount. The sliding end of the first transmission arm slides to a second position relative to the first sliding groove, the first limiting piece is matched with the first concave portion, the compression amount of the second elastic piece is a sixth compression amount, and the fifth compression amount is larger than the sixth compression amount. The sliding end of the second transmission arm slides to a third position relative to the second sliding groove, the second limiting part is matched with the second convex part, and the compression amount of the third elastic part is a seventh compression amount. The sliding end of the second transmission arm slides to a fourth position relative to the second sliding groove, the second limiting piece is matched with the second concave portion, the compression amount of the third elastic piece is an eighth compression amount, and the seventh compression amount is larger than the eighth compression amount.

In this implementation, through the cooperation of the first locating part and the first convex part and the first concave part of the first sliding chute, and the cooperation of the second locating part and the second convex part and the second concave part of the second sliding chute, a torque that hinders the relative rotation of the housing can be provided, thereby improving the hand feeling in the folding process of the electronic device. Meanwhile, the first limiting part is used for limiting the position relation between the first transmission arm and the second fixing frame, the second limiting part is used for limiting the position relation between the second transmission arm and the first fixing frame, so that the first transmission arm and the second fixing frame can keep a preset relative position relation when not subjected to large external force, the second transmission arm and the first fixing frame can keep a preset relative position relation when not subjected to large external force, the folding device can stop at a preset angle, and the folding device can keep a flat state or a closed state, so that the use experience of users of the folding device and the electronic equipment is improved.

In a possible implementation manner, the sliding end of the first driving arm has a second mounting groove, and the first limiting member is mounted in the second mounting groove. The first limiting part comprises a second support and a second elastic part, the second support comprises a control part and a supporting part, one end of the second elastic part is installed on the control part of the second support, the other end of the second elastic part supports against the groove wall of the second installation groove, and the supporting part of the second support is clamped with the second fixing frame. The second elastic part of the first limiting part can deform under the action of external force, so that the first limiting part can smoothly move between the first convex part and the first concave part relative to the second fixing frame, and the limiting reliability between the first transmission arm and the second fixing frame is improved.

In some implementations, the first limiting member may further include a first buffering member, and the first buffering member is mounted on the abutting portion of the second bracket. The first buffer member can be made of a material with low rigidity (such as rubber) so as to absorb impact force through deformation when external force is applied, and buffer is achieved. The first limiting part is provided with the first buffering part, so that the stress between the abutting part and the second fixing frame can be buffered, and the reliability of the limiting structure is improved.

In a possible implementation manner, the first transmission arm further includes a first limiting member, and the second transmission arm further includes a second limiting member. The first limiting part is arranged at the sliding end of the first transmission arm, and the second limiting part is arranged at the sliding end of the second transmission arm. The side wall of the first sliding chute is provided with a first convex part and a first concave part at intervals, and the side wall of the second sliding chute is provided with a second convex part and a second concave part at intervals. The first convex part comprises a second elastic part, and the second convex part comprises a third elastic part. The sliding end of the first transmission arm slides to a first position relative to the first sliding groove, the first limiting part is matched with the first convex part, and the compression amount of the second elastic part is a fifth compression amount. The sliding end of the first transmission arm slides to a second position relative to the first sliding groove, the first limiting piece is matched with the first concave portion, the compression amount of the second elastic piece is a sixth compression amount, and the fifth compression amount is larger than the sixth compression amount. The sliding end of the second transmission arm slides to a third position relative to the second sliding groove, the second limiting part is matched with the second convex part, and the compression amount of the third elastic part is a seventh compression amount. The sliding end of the second transmission arm slides to a fourth position relative to the second sliding groove, the second limiting piece is matched with the second concave portion, the compression amount of the third elastic piece is an eighth compression amount, and the seventh compression amount is larger than the eighth compression amount.

In this implementation, through the cooperation of the first locating part and the first convex part and the first concave part of the first sliding chute, and the cooperation of the second locating part and the second convex part and the second concave part of the second sliding chute, a torque that hinders the relative rotation of the housing can be provided, thereby improving the hand feeling in the folding process of the electronic device.

In a possible implementation, the folding device further comprises a synchronization component. The synchronizing assembly comprises a first synchronizing swing arm, a second synchronizing swing arm, a first gear and a second gear. The first gear is arranged on the main shaft and is rotationally connected with the main shaft. The second gear is arranged on the main shaft and is rotationally connected with the main shaft. The first gear is engaged with the second gear. The first synchronous swing arm comprises a sliding end and a rotating end, the rotating end of the first synchronous swing arm is rotatably connected with the main shaft, the rotating end of the first synchronous swing arm is meshed with the first gear, and the sliding end of the first synchronous swing arm is slidably connected with the first fixing frame. The second synchronous swing arm comprises a sliding end and a rotating end, the rotating end of the second synchronous swing arm is rotatably connected with the main shaft, the rotating end of the second synchronous swing arm is meshed with the second gear, and the sliding end of the second synchronous swing arm is slidably connected with the second fixing frame.

In this implementation, because the rotation end of first synchronous swing arm and the rotation end of the synchronous swing arm of second all rotate and connect the main shaft, the first mount of slip end sliding connection of first synchronous swing arm, the slip end sliding connection second mount of the synchronous swing arm of second, consequently at first casing and the relative expansion of second casing or relative folding in-process, the rotation angle that first mount and the relative main shaft of second mount can be controlled to first synchronous swing arm and the synchronous swing arm of second is unanimous, make the rotation action of first casing and second casing have synchronism and uniformity, folding device's folding action and expansion action symmetry preferred, be favorable to improving user's use and experience.

Wherein, the first synchronous swing arm rotates and connects the main shaft, and is connected with the first fixed mount in a sliding manner, so that a connecting rod and sliding block structure is formed. The second synchronous swing arm is rotatably connected with the main shaft and is in sliding connection with the second fixing frame, and a connecting rod sliding block structure is formed. The two mutually meshed connecting rod sliding block structures can well control the synchronism and the consistency of the rotating actions of the first shell and the second shell.

In this implementation, because the rotation end of the first synchronous swing arm, the first gear, the second gear and the rotation end of the second synchronous swing arm are engaged in sequence, the synchronous assembly formed by the first synchronous swing arm, the second synchronous swing arm, the first gear and the second gear has a simple structure, easy control of the motion process and high accuracy.

In a possible implementation manner, the folding device further includes a first conjoined cam, a second conjoined cam, a fourth elastic member, a snap ring, a snap spring, and a plurality of connecting shafts. The snap ring, the fourth elastic piece, the first connecting cam, the synchronizing assembly, the second connecting cam and the snap spring are sequentially sleeved on the connecting shafts. Be provided with first concave surface and first convex surface on the first connection cam, one side that synchronous subassembly orientation first connection cam is provided with second concave surface and second convex surface. Wherein, one side of synchronous subassembly orientation first connection cam is provided with second concave surface and second convex surface, includes at least: and a second concave surface and a second convex surface are arranged on one side of the first synchronous swing arm, or the second synchronous swing arm, or the first gear, or the second gear, which faces the first connecting cam.

In a possible implementation manner, when the first convex surface is matched with the second convex surface, the deformation amount of the fourth elastic element is the first deformation amount. The first convex surface is matched with the second concave surface, and the deformation of the fourth elastic element is a second deformation. The first amount of deformation is greater than the second amount of deformation.

In this implementation, the torque that hinders relative rotation of the first shell and the second shell can be provided through the cooperation between the several convex surfaces and the concave surfaces that are provided, thereby improving the hand feeling of the electronic device in the folding process.

In a possible implementation manner, the folding device further includes a third fixing frame, a fourth fixing frame, a third transmission arm, and a fourth transmission arm. The third fixing frame is fixed on the first shell, and the fourth fixing frame is fixed on the second shell. The third transmission arm comprises a sliding end and a rotating end, the sliding end of the third transmission arm is connected with the third fixing frame in a sliding mode, and the rotating end of the third transmission arm rotates the connecting shaft. The fourth transmission arm comprises a sliding end and a rotating end, the sliding end of the fourth transmission arm is connected with the fourth fixing frame in a sliding mode, and the rotating end of the fourth transmission arm rotates the connecting shaft.

In this implementation, through setting up third mount, fourth mount, third transmission arm and fourth transmission arm for folding device is more easily folded and is expanded.

In one possible implementation, the axis of rotation of the third actuator arm relative to the shaft and the axis of rotation of the second actuator arm relative to the shaft are collinear. The rotation axis of the fourth transmission arm and the shaft which rotate relatively is collinear with the rotation axis of the first transmission arm and the shaft which rotate relatively.

In this implementation, because third transmission arm and the relative main shaft pivoted axis of rotation collineation of second transmission arm, third transmission arm sliding connection third mount, fourth transmission arm and the relative main shaft pivoted axis of rotation collineation of first transmission arm, fourth transmission arm sliding connection fourth mount, therefore the motion of third transmission arm can be synchronous with the motion of second transmission arm, the motion of fourth transmission arm can be synchronous with the motion of first transmission arm, so can simplify slewing mechanism's structural design and relation of connection, improve slewing structure's reliability.

In a possible implementation manner, the rotating mechanism further includes a first supporting plate and a second supporting plate, the first supporting plate is fixedly connected to the sliding end of the second transmission arm, and the second supporting plate is fixedly connected to the sliding end of the first transmission arm. When the first shell and the second shell are relatively unfolded to the flattening state, the first supporting plate is flush with the second supporting plate, the first supporting plate is arranged between the first fixing frame and the spindle in an overlapping mode, and the second supporting plate is arranged between the second fixing frame and the spindle in an overlapping mode. When the first shell and the second shell are relatively folded to a closed state, the first supporting plate is stacked on one side of the first fixing frame, which is deviated from the second fixing frame, and the second supporting plate is stacked on one side of the second fixing frame, which is deviated from the first fixing frame.

In this implementation, when the first housing and the second housing are relatively unfolded to the flat state, the first support plate, the main shaft, and the second support plate can together form a complete plane support for the bending portion of the flexible display screen. When the first shell and the second shell are relatively folded to a closed state, the first supporting plate and the second supporting plate can slide and furl relative to the first shell and the second shell respectively, so that the main shaft is exposed to form a complete support for a bending part of the flexible display screen. Therefore, when the folding device is in the flat-open state or the closed state, the rotating mechanism can fully support the bending part of the flexible display screen, so that the flexible display screen is not easy to be damaged due to external force touch, the flexible display screen is protected, and the use experience of a user is improved.

In one possible implementation, the main shaft has a supporting surface, when the first casing and the second casing are folded relatively to the closed state, the supporting surface of the main shaft is exposed relative to the first supporting plate and the second supporting plate, and the supporting surface of the main shaft is arc-shaped.

In this implementation, the main shaft can be when first casing and second casing are relatively folded to the closed state, for the portion of bending of flexible display screen provides complete semicircle or is close semicircular supporting effect, keeps unanimous with the ideal closed form of the portion of bending of flexible display screen to can provide more optimized support to the flexible display screen of closed form.

In a possible implementation manner, the rotating mechanism further includes a first shielding plate and a second shielding plate, the first shielding plate is fixedly connected to the sliding end of the first transmission arm, and the second shielding plate is fixedly connected to the sliding end of the second transmission arm. The first shielding plate is positioned on one side of the first transmission arm back to the first supporting plate, and the second shielding plate is positioned on one side of the second transmission arm back to the second supporting plate.

When the first shell and the second shell are relatively unfolded to be in a flattening state, the first shielding plate is flush with the second shielding plate, the first shielding plate is erected between the first fixing frame and the main shaft, and the second shielding plate is erected between the second fixing frame and the main shaft. When the first shell and the second shell are folded relatively to a closed state, the first shielding plate is positioned between the first fixing frame and the first shell, and the second shielding plate is positioned between the second fixing frame and the second shell.

In this implementation, when first casing and second casing expand relatively to flat state, first shield plate flushes with the second shield plate, first shield plate sets up between first mount and main shaft, can shield the gap between first mount and the main shaft, the second shield plate sets up between second mount and main shaft, can shield the gap between second mount and the main shaft, consequently, folding device can realize shielding certainly, be favorable to improving the integrality of outward appearance, also can reduce the risk that outside dust, debris etc. get into slewing mechanism, in order to ensure folding device's reliability. When the first shell and the second shell are relatively folded to a closed state, the first shielding plate can be folded between the first fixing frame and the first shell, and the second shielding plate can be folded between the second fixing frame and the second shell, so that avoidance is realized, the folding device can be smoothly folded to a closed state, and the mechanism reliability is high.

In addition, the first supporting plate and the first shielding plate are fixed at the sliding end of the first transmission arm, the first supporting plate and the first shielding plate move along with the sliding end of the first transmission arm, the second supporting plate and the second shielding plate are fixed at the sliding end of the second transmission arm, and the second supporting plate and the second shielding plate move along with the sliding end of the second transmission arm, so that the first supporting plate and the second supporting plate are gradually close to or far away from the main shaft in the process of converting the folding device from the closed state to the flat state and in the process of converting the flat state to the closed state, the folding device can completely support the flexible display screen in various forms, and the reliability and the service life of the flexible display screen and the electronic equipment are improved. In the process of converting the folding device from the closed state to the flat state and in the process of converting the flat state to the closed state, the first shielding plate and the second shielding plate are gradually close to the main shaft or far away from the main shaft, so that the folding device can be matched with the form of the rotating mechanism to carry out self-shielding in various forms, and the reliability of the mechanism is high.

The first supporting plate, the first shielding plate and the second transmission arm are assembled into a component, and the second supporting plate, the second shielding plate and the first transmission arm are assembled into a component, so that the second transmission arm can directly control the movement track of the first supporting plate and the first shielding plate, and the first transmission arm can directly control the movement track of the second supporting plate and the second shielding plate, so that the control precision of the movement processes of the first supporting plate, the second supporting plate, the first shielding plate and the second shielding plate is high, the return difference is small, the stretching and retracting can be accurately realized in the rotation process of the folding device, and the supporting requirement of the flexible display screen and the self-shielding requirement of the rotating mechanism can be met.

In one possible implementation, the spindle has a shielding surface. When the first shell and the second shell are relatively unfolded to be in the flat state, the shielding surface of the spindle is exposed relative to the first shielding plate and the second shielding plate, so that the rotating mechanism can shield a gap between the first shell and the second shell through the first shielding plate, the spindle and the second shielding plate in the flat state, and self-shielding is achieved.

In a possible implementation manner, the main shaft further includes a shielding plate, and the shielding plate is fixed to a side of the main inner shaft facing away from the main outer shaft. The shielding surface of the main shaft is formed on the shielding plate and arranged back to the main shaft and the outer shaft. In some implementations, the shield plate can be secured to the main inner shaft by way of assembly. In other implementations, the shield plate and the main inner shaft may also be integrally formed structural members.

In a second aspect, the application provides an electronic device, including a flexible display screen and any one of the above folding devices, the flexible display screen includes a first non-bending portion, a bending portion and a second non-bending portion arranged in sequence, the first non-bending portion is fixed to a first housing, the second non-bending portion is fixed to a second housing, and the bending portion deforms in the process that the first housing and the second housing are folded or unfolded relatively.

In a third aspect, the present application provides an electronic device comprising a flexible display screen, a first housing, a second housing, a first resilient component, and a shaft. The flexible display screen comprises a first non-bending part, a bending part and a second non-bending part which are sequentially arranged. The first shell and the second shell are respectively positioned on two sides of the shaft. The first shell is fixedly connected with a first non-bending part of the flexible display screen, and the second shell is fixedly connected with a second non-bending part of the flexible display screen. The first elastic assembly is located between the shaft and the first shell and is rotatably connected with the shaft through a first rotating shaft, the first elastic assembly is abutted to a first structural member of the shaft, and the first elastic assembly is fixedly connected with the first shell. When the electronic device is in a flat state, the first elastic component is abutted to a first position of the first structural member, the distance between the axis of the first rotating shaft and the first position is a first distance, the projection length of the first distance on a first plane is a first projection length, and the first plane is a plane where a surface where the first shell is fixedly connected with the first non-bending part is located. The first housing rotates relative to the shaft, the second housing rotates relative to the shaft, and the electronic device is converted from the flat state to the folded state. When the electronic device is in a folded state, the first elastic assembly is abutted to the second position of the first structural member, the distance between the axis of the first rotating shaft and the second position is a second distance, the projection length of the second distance on the first plane is a second projection length, and the second projection length is smaller than the first projection length. Wherein the first location and the second location are different.

In a possible implementation manner, when the electronic device is in a flattened state, a compression amount of the first elastic assembly in a first direction is a first compression amount, wherein the first direction is perpendicular to a length extension direction of the shaft, and the first direction is parallel to the first housing. When the electronic device is in a folded state, the compression amount of the first elastic assembly in the first direction is a second compression amount, and the second compression amount is smaller than the first compression amount.

Based on the same inventive concept, other partial structures of the electronic device, such as: the principle and the beneficial effects of the solution to the problems can be found in the foregoing first aspect and the possible implementation manners of the first aspect and the beneficial effects brought by the foregoing rotating structure, the main shaft structure, the limiting member, and the like, so that the possible implementation manners of the electronic device can be found in the foregoing first aspect and the possible implementation manners of the first aspect, and repeated details are not repeated.

In a fourth aspect, the present application provides a folding apparatus. The folding device can be applied to electronic equipment, and the folding device is used for bearing a flexible display screen of the electronic equipment. The flexible display screen comprises a first non-bending part, a bending part and a second non-bending part which are sequentially arranged. The folding device comprises a first shell, a second shell, a first elastic component and a shaft. The first shell and the second shell are respectively positioned on two sides of the shaft. The first shell is fixedly connected with a first non-bending part of the flexible display screen, and the second shell is fixedly connected with a second non-bending part of the flexible display screen. The first elastic assembly is located between the shaft and the first shell and is rotatably connected with the shaft through a first rotating shaft, the first elastic assembly is abutted to a first structural member of the shaft, and the first elastic assembly is fixedly connected with the first shell. When the electronic device is in a flat state, the first elastic component is abutted to a first position of the first structural member, the distance between the axis of the first rotating shaft and the first position is a first distance, the projection length of the first distance on a first plane is a first projection length, and the first plane is a plane where a surface where the first shell is fixedly connected with the first non-bending part is located. The first housing rotates relative to the shaft, the second housing rotates relative to the shaft, and the electronic device is converted from the flat state to the folded state. When the electronic device is in a folded state, the first elastic assembly is abutted to the second position of the first structural member, the distance between the axis of the first rotating shaft and the second position is a second distance, the projection length of the second distance on the first plane is a second projection length, and the second projection length is smaller than the first projection length. Wherein the first location and the second location are different.

Based on the same inventive concept, other partial structures of the folding device, such as: the principle and the beneficial effects of the solution to the problems can be found in the foregoing first aspect and the possible implementation manners of the first aspect and the beneficial effects brought by the foregoing rotating structure, the main shaft structure, the limiting member, and the like, so that the possible implementation manners of the electronic device can be found in the foregoing first aspect and the possible implementation manners of the first aspect, and repeated details are not repeated.

In this application, the flexible display screen can be unfolded or folded with the folding device. When the electronic equipment is in a flat state, the flexible display screen is in a flat state and can display in a full screen mode, so that the electronic equipment has a large display area, and the watching experience of a user is improved. When the electronic equipment is in the closed state, the plane size of the electronic equipment is small, and the electronic equipment is convenient for a user to carry and store.

Electronic equipment is through the structural design of first elastic component and second elastic component for when electronic equipment was expanded to the exhibition flat state by fold condition, flexible display screen received the power of keeping away from the main shaft direction, thereby the crease of flexible display screen resumes with higher speed, has improved the planarization of flexible display screen, and then has improved user's use and experienced.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device in a flattened state according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a folding device of the electronic apparatus shown in FIG. 1;

FIG. 3 is a schematic diagram of the electronic device shown in FIG. 1 in an intermediate state;

FIG. 4 is a schematic structural diagram of a folding device of the electronic apparatus shown in FIG. 3;

FIG. 5 is a schematic structural diagram of the electronic device shown in FIG. 1 in a closed state;

FIG. 6 is a schematic structural diagram of a folding device of the electronic apparatus shown in FIG. 5;

FIG. 7 is a schematic view of a partially exploded view of the folding device shown in FIG. 2;

FIG. 8 is a schematic structural view of the first housing shown in FIG. 7;

FIG. 9 is a schematic structural view of the second housing shown in FIG. 7;

FIG. 10 is a schematic view of a partially exploded view of the rotation mechanism of FIG. 7;

FIG. 11 is a partially exploded, schematic structural view of a portion of the folding device of FIG. 2;

FIG. 12 is a schematic structural view of the first end connection assembly of FIG. 11;

FIG. 13 is a partially exploded schematic view of the first end connection assembly of FIG. 12;

FIG. 14 is a partially exploded, alternate angle schematic view of the first end coupling assembly of FIG. 12;

FIG. 15 is an exploded view of a portion of the structure shown in FIGS. 12-14;

FIG. 16 is a cross-sectional view of the folding device of FIG. 2 in a flattened state, taken along line A1-A1 of FIG. 12;

FIG. 17 is a cross-sectional view of the folding device of FIG. 2 in a closed position taken along line A1-A1 of FIG. 12;

FIG. 18 is a schematic diagram comparing spring lengths in a flattened state and a folded state of an electronic device;

FIG. 19 is a schematic view of a prior art flexible display screen in a closed state;

FIG. 20 is a schematic view of a prior art flexible display screen in a flattened state;

fig. 21 is a schematic state diagram of flattening of the flexible display screen according to the present embodiment;

FIG. 22 is a schematic cross-sectional view of the structure of FIG. 12 taken along line A2-A2;

FIG. 23a is a schematic view showing the relationship between the rotation shaft and the connection hole in the early stage of use and after a period of use of the flexible screen;

FIG. 23b is a schematic diagram comparing the spring length of the electronic device in a flattened state and a folded state after aging of the flexible display;

FIG. 24 is a schematic view of a flexible display screen support plate;

FIG. 25 is a schematic structural view of the central link assembly of FIG. 11;

FIG. 26 is an exploded view of the central link assembly of FIG. 25;

FIG. 27 is a schematic view of a portion of the rotating mechanism of FIG. 7;

FIG. 28 is an exploded view of the structure shown in FIG. 27;

FIG. 29 is a schematic structural view of the main inner shaft of FIG. 11;

FIG. 30 is a schematic view of the main outer shaft of FIG. 11 at another angle;

FIG. 31 is a schematic view of the mating relationship of the partial structure shown in FIG. 14 with a spindle;

FIG. 32 is a schematic view of the partial structure of FIG. 31 in mating relationship with a spindle;

FIG. 33 is a schematic view of a portion of the folding device of FIG. 2 in a flattened condition;

FIG. 34 is a cross-sectional view of the folding device of FIG. 2 in a flattened state, taken along line A1-A1 of FIG. 12;

FIG. 35 is a schematic cross-sectional view taken along section line A3-A3 of FIG. 12 in a flattened state of the structure of FIG. 32;

FIG. 36 is a schematic view of a portion of the folding apparatus shown in FIG. 2 in an intermediate configuration;

FIG. 37 is a cross-sectional view of the intermediate state of the folding device of FIG. 2 taken along section line A1-A1 of FIG. 12;

FIG. 38 is a cross-sectional view taken along line A3-A3 of FIG. 12, illustrating an intermediate state of the structure of FIG. 31;

FIG. 39 is a schematic view of a portion of the folding device of FIG. 2 in a closed position;

FIG. 40 is a cross-sectional view of the folding device of FIG. 2 in a closed position taken along line A1-A1 of FIG. 12;

FIG. 41 is a schematic cross-sectional view of the folding apparatus of FIG. 2 in a flattened state, taken along line B-B of FIG. 12;

FIG. 42 is a cross-sectional view of the intermediate state of the folding device of FIG. 2 taken along section line B-B of FIG. 12;

FIG. 43 is a cross-sectional structural view of the folding device of FIG. 2 in a closed state taken along section line B-B of FIG. 12;

fig. 44 is an exploded schematic view of the first limiting member shown in fig. 12 to 14;

FIG. 45 is a diagram illustrating forces applied during folding of the electronic device;

FIG. 46 is a schematic view of the synchronous damping member of FIG. 14 in mating relationship with a main shaft;

FIG. 47 is a cross-sectional structural view of the folding device of FIG. 2 in a flattened state, taken along the line C-C of FIG. 12;

FIG. 48 is a cross-sectional view of the intermediate state of the folding device of FIG. 2 taken along the line C-C of FIG. 12;

FIG. 49 is a cross-sectional structural view of the folding device of FIG. 2 in a closed state, taken along section line C-C of FIG. 12;

FIG. 50 is an exploded view of the synchronous damping member of FIGS. 12-14;

fig. 51 is a schematic structural view of the first link cam shown in fig. 50;

FIG. 52 is a schematic view of the first gear of FIG. 50;

FIG. 53 is a schematic view of the first link cam engaging the first gear when the first and second housings are unfolded and unfolded;

FIG. 54 is a schematic view of the first link cam engaging the first gear as the first housing and the second housing begin to rotate relative to each other;

FIG. 55 is a partial schematic view of the timing damper of FIG. 50.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments.

In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.

In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

Furthermore, in the present application, directional terms such as "center," "front," "back," "inner," "outer," and the like are defined with respect to a schematically placed orientation or position of a component in the drawings, it is to be understood that these directional terms are relative concepts that are used for descriptive and clarity purposes and not for indicating or implying that a particular orientation of a referenced device or component must have or be constructed and operated in a particular orientation, which may vary accordingly depending on the orientation in which the component is placed in the drawings, and therefore are not to be construed as limiting the present application.

It should be noted that the same reference numerals are used to denote the same components or parts in the embodiments of the present application, and for the same parts in the embodiments of the present application, only one of the parts or parts may be given the reference numeral, and it should be understood that the reference numerals are also applicable to the other same parts or parts.

The embodiment of the application provides a folding device and electronic equipment, and the electronic equipment comprises the folding device and a flexible display screen fixed on the folding device. The folding device may be unfolded to a flat state (also referred to as an unfolded state), may be folded to a closed state (also referred to as a folded state), or may be in an intermediate state between the flat state and the closed state. The flexible display screen is unfolded and folded along with the folding device. The flexible display screen is multilayer structure, and every layer can produce the deformation of different degree when buckling, and when electronic equipment expanded to the flat state by the closure state, the deformation that the flexible display screen produced needed the recovery time, therefore can cause the crease to appear in the middle part of the flexible display screen to reduce the planarization of flexible display screen, influenced user experience. The folding device and the electronic equipment provided by the embodiment of the application can improve the crease of the flexible display screen, improve the flatness of the flexible display screen and improve the user experience.

Referring to fig. 1 to 6 together, fig. 1 is a schematic structural diagram of an electronic device 1000 provided in an embodiment of the present application in a flat state, fig. 2 is a schematic structural diagram of a folding apparatus 100 of the electronic device 1000 shown in fig. 1 in a flat state, fig. 3 is a schematic structural diagram of the electronic device 1000 shown in fig. 1 in an intermediate state, fig. 4 is a schematic structural diagram of the folding apparatus 100 of the electronic device 1000 shown in fig. 3 in an intermediate state, fig. 5 is a schematic structural diagram of the electronic device 1000 shown in fig. 1 in a closed state, and fig. 6 is a schematic structural diagram of the folding apparatus 100 of the electronic device 1000 shown in fig. 5 in a closed state. The electronic device 1000 may be a mobile phone, a tablet computer, a notebook computer, or the like. The embodiment is described by taking the electronic device 1000 as a mobile phone as an example.

The electronic device 1000 includes a folding apparatus 100 and a flexible display 200. The folding device 100 includes a first housing 10, a rotating mechanism 20, and a second housing 30 connected in this order. The first casing 10 may include a middle frame and a rear cover, and the second casing 30 may include a middle frame and a rear cover. The rotating mechanism 20 can be deformed to rotate the first casing 10 and the second casing 30 around the rotating mechanism 20, so that the electronic device 1000 is in a flat state, an intermediate state or a closed state. As shown in fig. 1 and 2, the first casing 10 and the second casing 30 can be relatively unfolded to be in a flat state, so that the electronic device 1000 is in the flat state. Illustratively, the angle α between the first housing 10 and the second housing 30 in the flattened state may be approximately 180 ° (some deviation is also allowed, such as 165 °, 177 °, or 185 °). As shown in fig. 3 and 4, the first casing 10 and the second casing 30 can be relatively rotated (unfolded or folded) to an intermediate state, so that the electronic apparatus 1000 is in the intermediate state. As shown in fig. 5 and 6, the first casing 10 and the second casing 30 can be folded relatively to a closed state, so that the electronic device 1000 is in the closed state. Illustratively, when the first housing 10 and the second housing 30 are in the closed state, the two housings can be substantially completely folded to be parallel to each other (a slight deviation is also allowed). The intermediate state shown in fig. 3 and 4 may be any state between the flat state and the closed state. Therefore, the electronic device 1000 can be switched between the flat state and the closed state by the deformation of the rotating mechanism 20.

The flexible display 200 is fixed to the folding device 100 so as to be unfolded or folded with the folding device 100. Illustratively, the flexible display 200 may be adhered to the folding device 100 by a glue layer. The flexible display panel 200 includes a first non-bending portion 2001, a bending portion 2002, and a second non-bending portion 2003 arranged in this order. The first non-bending portion 2001 of the flexible display 200 is fixed to the first housing 10, the second non-bending portion 2003 is fixed to the second housing 30, and the bending portion 2002 deforms when the first housing 10 and the second housing 30 are folded or unfolded relatively. As shown in fig. 1, when the first housing 10 and the second housing 30 are in the flat state, the flexible display screen 200 is in the flat state, and can display in a full screen, so that the electronic device 1000 has a larger display area to improve the viewing experience of a user; as shown in fig. 3, when the first casing 10 and the second casing 30 are in the intermediate state, the flexible display 200 is in the intermediate state between the flat state and the closed state; as shown in fig. 5, when the first casing 10 and the second casing 30 are in the closed state, the flexible display 200 is in the closed configuration. When the electronic device 1000 is in the closed state, the flexible display 200 is located outside the folding device 100, and the flexible display 200 may be substantially U-shaped. When the electronic device 1000 is in the closed state, the plane size of the electronic device 1000 is small, which is convenient for the user to carry and store.

Fig. 1, fig. 3 and fig. 5 are schematic diagrams showing deformation of the rotating mechanism 20 during the process of relatively folding the electronic device 100 from the flat state to the closed state. As shown in fig. 1, when the electronic device 1000 is in the flat state, the length of the bending portion 2002 of the flexible display 200 is a first length L1, the length of the rotating mechanism 20 is a second length L2, and the first length L1 is equal to the second length L2. As shown in fig. 3, when the electronic device 1000 is in the intermediate state, the length of the bending portion 2002 of the flexible display 200 is still the first length L1, the rotating mechanism 20 is deformed, the length is changed to the third length L3, and the third length L3 is smaller than the second length L2. As shown in fig. 5, when the electronic device 1000 is in the closed state, the length of the bending portion 2002 of the flexible display 200 is still the first length L1, the rotating mechanism 20 is deformed, the length is changed to the fourth length L4, and the fourth length L4 is smaller than the third length L3. Therefore, in the process of unfolding or folding the electronic device 1000, the flexible display screen 200 can keep a constant length by the deformation of the rotating mechanism 20, so that the risk of pulling or extruding the flexible display screen is reduced, the reliability of the flexible display screen is improved, and the flexible display screen and the electronic device have a long service life.

In some embodiments, the flexible display screen 200 is used to display images. Exemplarily, the flexible display panel 200 may be an Organic Light-Emitting Diode (OLED) display panel, an Active Matrix Organic Light-Emitting Diode (AMOLED) display panel or an Active Matrix Organic Light-Emitting Diode (Active-Matrix Organic Light-Emitting Diode), a Mini Light-Emitting Diode (Mini Organic Light-Emitting Diode) display panel, a Micro Light-Emitting Diode (Micro Organic Light-Emitting Diode) display panel, a Micro Organic Light-Emitting Diode (Micro Organic Light-Emitting Diode) display panel, a Quantum Dot Light-Emitting Diode (QLED) display panel.

The flexible display 200 is a multi-layer structure, for example, including: the first electrode layer, the dielectric thin layer and the second electrode layer are bonded through optical Adhesive (OCA), wherein the OCA has elasticity. When the flexible display screen 200 is folded, because the tension of the material of each layer is accumulated, a huge tension opposite to the bending direction of the flexible display screen can be generated, and different layers of the flexible display screen 200 can generate deformation in different degrees. When the flexible display screen 200 is unfolded from the closed state to the flat state, since the screen needs to be deformed for a recovery time, the bending portion 2002 has a crease, so that the smoothness of the flexible display screen is reduced, and the user experience is influenced. When the flexible display screen 200 is repeatedly folded, the deformation of the screen is difficult to recover, and the problem of screen crease is increasingly serious.

It should be understood that, the fold described in the embodiments of the present application refers to a trace that remains on the flexible display screen without disappearance of the bending trace after the flexible display screen is bent and unfolded, and the area where the fold is located is a bending area of the flexible display screen.

In some embodiments, the electronic apparatus 1000 may further include a plurality of modules (not shown), and the plurality of modules may be received inside the folding device 100. The plurality of modules of the electronic device 1000 may include, but are not limited to, a motherboard, a processor, a memory, a battery, a camera module, an earphone module, a speaker module, a microphone module, an antenna module, a sensor module, and the like, and the number, types, positions, and the like of the modules of the electronic device 1000 are not specifically limited in the embodiment of the present application.

It is understood that, when a user holds the electronic device 1000, a position of an earphone module of the electronic device 1000 may be defined as an upper side of the electronic device 1000, a position of a microphone module of the electronic device 1000 may be defined as a lower side of the electronic device 1000, and two sides of the electronic device 1000 held by left and right hands of the user may be defined as left and right sides of the electronic device 1000. In some embodiments, the electronic device 1000 is capable of side-to-side folding. In other embodiments, the electronic device 1000 can be folded up and down.

Please refer to fig. 7-10. Fig. 7 is a partially exploded view of the folding device 100 shown in fig. 2, fig. 8 is a view showing the structure of the first housing 10 shown in fig. 7, fig. 9 is a view showing the structure of the second housing 30 shown in fig. 7, and fig. 10 is a view showing the partially exploded view of the rotating mechanism 20 shown in fig. 7.

In some embodiments, as shown in fig. 7, the rotating mechanism 20 of the folding device 100 includes a main shaft 1, a first end connecting assembly 20a, a second end connecting assembly 20 a', a middle connecting assembly 20b, a first supporting plate 21, a second supporting plate 22, a first shielding plate 23, and a second shielding plate 24.

As shown in fig. 7, the main shaft 1 is located between the first housing 10 and the second housing 30. The first end connecting assembly 20a and the second end connecting assembly 20 a' connect the first housing 10, the spindle 1 and the second housing 30. The first end connecting assembly 20a and the second end connecting assembly 20a 'are arranged at intervals in the axial direction of the main shaft 1, and the first end connecting assembly 20a and the second end connecting assembly 20 a' may be respectively disposed at the ends of the main shaft 1, for example, may be respectively connected to the top and the bottom of the main shaft 1, or may be referred to as the upper end and the lower end of the main shaft 1. The middle connection assembly 20b connects the first housing 10, the main shaft 1, and the second housing 30. Middle connection assembly 20b may be located between first end connection assembly 20a and second end connection assembly 20 a'. Referring to fig. 10 in combination, a first support plate 21 and a second support plate 22 are positioned on one side of the plurality of connection assemblies (i.e., first end connection assembly 20a, second end connection assembly 20a ', and middle connection assembly 20b), and a first shield plate 23 and a second shield plate 24 are positioned on the other side of the plurality of connection assemblies (20a, 20 a', 20 b).

As shown in fig. 7 and 10, in some embodiments, a first support plate 21 is located on a side of the main shaft 1 close to the first housing 10, and the first support plate 21 connects the first end connection assembly 20a and the second end connection assembly 20 a'. In some embodiments, the first support plate 21 may also be connected to the middle connection assembly 20 b. A second support plate 22 is located on the side of the main shaft 1 adjacent to the second housing 30, the second support plate 22 connecting the first end connection assembly 20a and the second end connection assembly 20 a'. In some embodiments, a second support plate 22 may also be coupled to the middle attachment assembly 20 b.

As shown in fig. 7 and 10, in some embodiments, a first shielding plate 23 is located on a side of the main shaft 1 close to the first housing 10, and the first shielding plate 23 connects the first end connection assembly 20a and the second end connection assembly 20 a'. In some embodiments, first shield panel 23 may also be coupled to middle attachment assembly 20 b. A second shielding plate 24 is disposed on a side of the main shaft 1 near the second housing 30, and the second shielding plate 24 connects the first end connecting assembly 20a and the second end connecting assembly 20 a'. In some embodiments, second shield 24 may also be coupled to middle connector assembly 20 b.

As shown in fig. 7, the first housing 10 has a first supporting surface 101, and the first supporting surface 101 is used for supporting the first non-bending portion 2001 of the flexible display 200. The second housing 30 has a second supporting surface 301, and the second supporting surface 301 is used for supporting the second non-bending portion 2003 of the flexible display 200. When the first housing 10 and the second housing 30 are relatively unfolded to the flat state, the first supporting surface 101 is flush with the second supporting surface 301, so as to better support the flexible display screen 200, so that the flexible display screen 200 is more flat, which is beneficial to improving the user experience.

In some embodiments, as shown in fig. 8, a first positioning plate 102 is disposed on a side of the first casing 10 of the folding apparatus 100 close to the rotating mechanism 20, and the first positioning plate 102 has a plurality of fastening holes 1021, so as to fix the first casing 10 and the rotating mechanism 20 by fastening members. In the drawings, the fastening members of the folding device 100 are not illustrated in order to simplify the drawings, and the main structure of the folding device 100 is more clearly illustrated. The first housing 10 has a first supporting surface 101, and the first positioning plate 102 is sunk relative to the first supporting surface 101 to form a first receiving groove 103. First holding tank 103 can provide for first backup pad 21 and accept and the activity space, and the position setting of first holding tank 103 makes the holding surface of installing in first backup pad 21 of first holding tank 103 can flush with first holding surface 101 of first casing 10 for first backup pad 21 can better support flexible display screen 200. Wherein, the depth of first holding tank 103 is very shallow, and the non-display side of flexible display screen 200 is equipped with the higher bearing board of hardness, consequently when first backup pad 21 part stretches out first holding tank 103, the part of flexible display screen 200 towards first holding tank 103 can not take place obvious deformation under user's the pressure, also is favorable to guaranteeing the reliability of flexible display screen 200.

For example, the first positioning plate 102 may include a plurality of structures arranged at intervals, or may be a continuous structure, which is not strictly limited in this application.

In some embodiments, as shown in fig. 9, a side of the second housing 30 close to the rotating mechanism 20 is provided with a second positioning plate 302, and the second positioning plate 302 is provided with a plurality of fastening holes 3021, and the second housing 30 and the rotating mechanism 20 are fixed by fastening members. The second housing 30 has a second supporting surface 301, and the second positioning plate 302 is sunk with respect to the second supporting surface 301 to form a second receiving cavity 303. The second accommodating groove 303 can provide accommodating and moving space for the second supporting plate 22, and the position of the second accommodating groove 303 is set so that the supporting surface of the second supporting plate 22 mounted in the second accommodating groove 303 can be flush with the second supporting surface 301 of the second housing 30, so that the second supporting plate 22 can better support the flexible display screen 200. The depth of the second accommodating groove 303 is shallow, and the non-display side of the flexible display screen 200 is provided with a supporting plate with higher hardness, so that when the second supporting plate 22 partially extends out of the second accommodating groove 303, the part of the flexible display screen 200 facing the second accommodating groove 303 does not deform obviously under the pressing of a user, and the reliability of the flexible display screen 200 is ensured.

For example, the second positioning plate 302 may include a plurality of structures spaced apart from each other, or may be a continuous structure, which is not limited in this application.

As shown in fig. 7, the spindle 1 has a support surface 11. As shown in fig. 1 and 2, when the first casing 10 and the second casing 30 are unfolded to be flat, the support surface 11 of the spindle 1 is at least partially exposed with respect to the first support plate 21 and the second support plate 22. The first support plate 21, the main shaft 1 and the second support plate 22 can support the bending portion 2002 of the flexible display screen 200 together, so that the flexible display screen 200 is more flat and is not easy to be damaged due to external force touch, and the reliability of the flexible display screen 200 is improved. As shown in fig. 3 and 4, when the first housing 10 and the second housing 30 are in the intermediate state, the supporting surface 11 of the spindle 1 is partially exposed relative to the first supporting plate 21 and the second supporting plate 22, the exposed area of the supporting surface 11 of the spindle 1 is larger than that of the supporting surface in the flat state, and the supporting surface 11 of the spindle 1, the first supporting plate 21 and the second supporting plate 22 support the bending portion 2002 of the flexible display 200 together. As shown in fig. 5 and 6, when the first casing 10 and the second casing 30 are folded to the closed state, the supporting surface 11 of the main shaft 1 is substantially completely exposed with respect to the first supporting plate 21 and the second supporting plate 22, and the supporting surface 11 of the main shaft 1 supports the bent portion 2002 of the flexible display 200.

The support surface 11 of the spindle 1 is illustratively curved. At this time, when the first housing 10 and the second housing 30 are folded relatively to the closed state, the supporting surface 11 of the spindle 1 can provide a complete semi-circle or approximately semi-circle supporting effect for the bending portion 2002 of the flexible display screen 200, and the ideal closed state of the bending portion 2002 of the flexible display screen 200 is maintained, so that more optimal support can be provided for the flexible display screen 200 in the closed state. It will be appreciated that in the present embodiment, the support surface 11 of the spindle 1 may be curved or approximately curved.

In some embodiments, the supporting surface 11 of the main shaft 1 has an arc shape, and the central angle thereof may be in the range of 150 ° to 180 ° to better support the flexible display 200. In other embodiments, the central region of the support surface 11 of the spindle 1 is planar and the two side regions are arc-planar. At this time, the supporting surface 11 is approximately arc-shaped as a whole, and a semicircular or approximately semicircular support can be achieved for the flexible display 200 in the closed state. The middle region of the supporting surface 11 can be in a flat state, and can support the flexible display panel 200 together with the first supporting plate 21 and the second supporting plate 22. In other embodiments, the support surface 11 of the spindle 1 may have other shapes. For example, the support surface 11 of the main shaft 1 is provided in a semi-elliptical shape to reduce the width of the folding device 100 in the closed state, thereby facilitating portability and storage. The shape of the support surface 11 of the spindle 1 is not strictly limited in the present embodiment.

Referring to fig. 11, fig. 11 is a partially exploded view of a portion of the folding device 100 shown in fig. 2.

As shown in fig. 11, in some embodiments, the main shaft 1 includes a main outer shaft 14, a main inner shaft 15, and a shield plate 16. The main outer shaft 14 is fixed to one side of the main inner shaft 15, and the shield plate 16 is fixed to the other side of the main inner shaft 15. The support surface 11 of the main shaft 1 is formed on the main outer shaft 14 and is disposed away from the main inner shaft 15. The shielding surface 12 of the main shaft 1 is formed on a shielding plate 16 and is disposed away from the main shaft 14. In some embodiments, the shield plate 16 may be fixed to the main inner shaft 15 by assembly. In other embodiments, the shield plate 16 and the main inner shaft 15 may be an integral structural member.

The main outer shaft 14 and the main inner shaft 15 together form a plurality of movable spaces communicating to the outside of the main shaft 1, and a plurality of connecting assemblies (20a, 20 a', 20b) of the rotating mechanism 20 are movably installed in the movable spaces to connect the main shaft 1. The rotational axis of the entire rotating mechanism 20 is parallel to the axial direction of the spindle 1, and the spindle 1 extends in the axial direction thereof.

In some embodiments, first end coupling assembly 20a and second end coupling assembly 20 a' are mirror images. Since the two

end connection assemblies

20a and 20a 'are arranged in mirror symmetry, during the rotation of the folding device 100, the stress between the two

end connection assemblies

20a and 20 a' and the main shaft 1, the first housing 10 and the second housing 30 is relatively uniform, which is beneficial to improving the reliability of the folding device 100. At this time, since the two

end connection assemblies

20a and 20 a' have symmetrical structures, the entire structure of the rotating mechanism 20 is simple and the manufacturing cost is low. In other embodiments, the two

end connector assemblies

20a, 20a 'may be identical or have a central symmetrical structure, and the two

end connector assemblies

20a, 20 a' may have different structures.

Wherein the structure of the middle connecting assembly 20b is simpler than the structure of the

end connecting assemblies

20a and 20 a'. In other embodiments, the rotating mechanism 20 may not be provided with the middle connecting assembly 20 b. In other embodiments, the rotating mechanism 20 may employ the structure of the end connector assembly 20a/20 a' shown in fig. 11 for the middle connector assembly and the structure of the middle connector assembly 20b shown in fig. 11 for the end connector assembly. In other embodiments, only one end connection assembly 20a/20a 'may be provided in the embodiments of the present application, and the end connection assembly 20a/20 a' connects the middle portion of the main shaft 1 and the middle portions of the first housing 10 and the second housing 30. It is understood that the structure of the rotating mechanism 20 can be combined and modified in various ways, and the embodiment of the present application is not limited thereto.

Please refer to fig. 12, 13 and 14. Fig. 12 is a schematic view of first end coupling assembly 20a of fig. 11, fig. 13 is a schematic view of a partially exploded view of first end coupling assembly 20a of fig. 12, and fig. 14 is a schematic view of a partially exploded view of first end coupling assembly 20a of fig. 12 at another angle.

In some embodiments, as shown in fig. 12, the first end connecting assembly 20a of the rotating mechanism 20 may include a first fixing frame 31, a second fixing frame 32, a first rotating member, and a second rotating member. Wherein the first rotating member may include a first transmission arm 41, a first rotation arm 51, and a first link 61, and the second rotating member may include a second transmission arm 42, a second rotation arm 52, and a second link 62. The first fixing frame 31, the first rotating arm 51, the first connecting piece 61, the first transmission arm 41 and the second fixing frame 32 are sequentially connected, and the first fixing frame 31, the second transmission arm 42, the second connecting piece 62, the second rotating arm 52 and the second fixing frame 32 are sequentially connected. The shaft may include a main shaft 1, a first rotating member, and a second rotating member.

Illustratively, as shown in fig. 13, the first transmission arm 41 includes a sliding end 411 and a rotating end 412. The sliding end 411 of the first transmission arm 41 is slidably connected to the second fixing frame 32, and the rotating end 412 of the first transmission arm 41 is rotatably connected to the first end 611 of the first connecting member 61. The first rotation arm 51 includes a first end 511 (second structural member) having a claw shape and a second end 512 having a claw shape. The first end 511 of the first rotating arm 51 is rotatably connected to the first fixing frame 31, and the second end 512 of the first rotating arm 51 is rotatably connected to the second end 612 of the first connecting member 61. Second drive arm 42 includes a sliding end 421 and a rotating end 422. The sliding end 421 of the second transmission arm 42 is slidably connected to the first fixing frame 31, and the rotating end 422 of the second transmission arm 42 is rotatably connected to the first end 621 of the second connecting element 62. The second rotating arm 52 includes a first end 521 having a claw shape and a second end 522 having a claw shape. The first end 521 of the second rotating arm 52 is rotatably connected to the second fixing frame 32, and the second end 522 of the second rotating arm 52 is rotatably connected to the second end 622 of the second connecting member 62.

In some embodiments, as shown in fig. 14, the first fixing frame 31 includes a first connecting block 311. The first link block 311 may have a claw shape, and the first link block 311 has a rotation hole 3111. The first end 511 of the first rotating arm 51, i.e., the second structural member, has a rotating hole 5111. The first end 511 of the first rotating arm 51 is connected to the first connecting block 311 in a staggered manner, and the rotating shaft 5112 connects the first end 511 of the first rotating arm 51 and the first connecting block 311 of the first fixing frame 31 through the connecting hole 5111 of the first rotating arm 51 and the connecting hole 3111 of the first connecting block 311, so that the first rotating arm 51 is rotatably connected to the first fixing frame 31. Since the first end 511 of the first rotating arm 51 is connected to the first connecting block 311 in a staggered manner, the first end and the second end can be limited in the axial direction of the spindle 1, and the connection reliability of the rotating mechanism 20 can be improved. For example, the rotating shaft in the embodiment of the present application may be a pin. It should be understood that the first connecting block 311 of the first fixing frame 31 and the first end 511 of the first rotating arm 51 may have other structures, and the rotating connection relationship between the two structures may be satisfied, which is not limited in this embodiment of the present invention.

In some embodiments, as shown in fig. 13 and 14, the second end 612 of the first connecting member 61 is in a claw shape, and the second end 512 of the first rotating arm 51 is connected to the second end 612 of the first connecting member 61 in an interlaced manner through the rotating shaft 6121, so that the first rotating arm 51 is rotatably connected to the first connecting member 61. The first end 611 of the first connecting member 61 is in a claw shape, the end of the rotating end 412 of the first transmission arm 41 is in a claw shape, and the first end 611 of the first connecting member 61 is in staggered connection with the end of the rotating end 412 of the first transmission arm 41 through the rotating shaft 6111, so that the rotating connection between the first connecting member 61 and the first transmission arm 41 is realized. The second end 512 of the first rotating arm 51 is connected with the second end 612 of the first connecting member 61 in a staggered manner, and the first end 611 of the first connecting member 61 is connected with the end of the rotating end 412 of the first driving arm 41 in a staggered manner, so that the axial direction of the main shaft 1 is limited, and the connection reliability of the rotating mechanism 20 is improved. It can be understood that the second end 512 of the first rotating arm 51 and the second end 612 of the first connecting member 61, and the first end 611 of the first connecting member 61 and the rotating end 412 of the first driving arm 41 may have other structures, which can satisfy the rotating connection relationship therebetween, and this embodiment of the present application is not limited thereto.

In some embodiments, as shown in FIG. 14, second mount 32 includes a second attachment block 321. The second connecting block 321 may have a claw shape, and the second connecting block 321 has a rotation hole 3211. The first end 521 of the second rotating arm 52 has a rotating hole 5211. The first end 521 of the second rotating arm 52 is connected to the second connecting block 321 in a staggered manner, and the rotating shaft 5212 connects the first end 521 of the second rotating arm 52 to the second connecting block 3211 of the second fixing frame 32 through the connecting hole 5211 of the second rotating arm 52 and the connecting hole 3211 of the second connecting block 321, so that the second rotating arm 52 is rotatably connected to the second fixing frame 32. Since the first ends 521 of the second rotating arms 52 are connected to the second connecting blocks 321 in a staggered manner, the first ends and the second ends can be limited in the axial direction of the spindle 1, and the connection reliability of the rotating mechanism 20 can be improved. For example, the rotating shaft in the embodiment of the present application may be a pin. It is understood that the second connecting block 321 of the second fixing frame 32 and the first end 521 of the second rotating arm 52 may have other structures, which can satisfy the rotating connection relationship therebetween, and this is not strictly limited in this embodiment of the application.

In some embodiments, as shown in fig. 13 and 14, the second end 622 of the second link 62 is claw-shaped, and the second end 522 of the second rotating arm 52 is cross-connected with the second end 622 of the second link 62 through the rotating shaft 6221, so as to realize the rotating connection between the second rotating arm 52 and the second link 62. The first end 621 of the second connecting member 62 is in the shape of a claw, the end of the rotating end 422 of the second transmission arm 42 is in the shape of a claw, and the first end 621 of the second connecting member 62 is connected with the end of the rotating end 422 of the second transmission arm 42 in a staggered manner through a rotating shaft 6211, so that the rotating connection between the second connecting member 62 and the second transmission arm 42 is realized. The second end 522 of the second rotating arm 52 is connected to the second end 622 of the second connecting element 62 in a staggered manner, and the first end 621 of the second connecting element 62 is connected to the end 422 of the second transmission arm 42 in a staggered manner, so that the axial direction of the spindle 1 is limited, and the connection reliability of the rotating mechanism 20 is improved. It can be understood that the second end 522 of the second rotating arm 52 and the second end 622 of the second connecting element 62, and the first end 621 of the second connecting element 62 and the rotating end 422 of the second transmission arm 42 may have other structures, which can satisfy the rotating connection relationship therebetween, and this is not strictly limited in the embodiment of the present application.

In some embodiments, as shown in fig. 14, the second fixing frame 32 has a first sliding groove 322, and a side wall of the first sliding groove 322 may have a recessed guide space 3221. The sliding end 411 of the first transmission arm 41 includes a first flange 4111 located on the peripheral side, and the first flange 4111 is installed in the guiding space 3221 of the first sliding groove 322, so that the sliding end 411 of the first transmission arm 41 is slidably connected with the first sliding groove 322, thereby achieving the sliding connection between the first transmission arm 41 and the second fixing frame 32. In this embodiment, the guiding space 3221 of the first sliding groove 322 is matched with the first flange 4111 of the first driving arm 41, so as to guide the sliding end 411 of the first driving arm 41 in the sliding direction of the first sliding groove 322, so that the relative sliding motion between the first driving arm 41 and the second fixing frame 32 is easier to implement, and the control precision is higher.

In some embodiments, as shown in fig. 14, the first fixing frame 31 has a second sliding groove 312, and a side wall of the second sliding groove 312 may have a recessed guide space 3121. The sliding end 421 of the second transmission arm 42 includes a second flange 4211 located on the peripheral side, and the second flange 4211 is installed in the guide space 3121 of the second sliding slot 312, so that the sliding end 421 of the second transmission arm 42 is slidably connected with the second sliding slot 312, thereby implementing the sliding connection of the second transmission arm 42 and the first fixing frame 31. In this embodiment, the guiding space 3121 of the second sliding slot 312 is matched with the second flange 4211 of the second transmission arm 42, so that the sliding direction of the sliding end 421 of the second transmission arm 42 in the second sliding slot 312 can be guided, the relative sliding motion between the second transmission arm 42 and the first fixing frame 31 is easier to achieve, and the control precision is higher.

The positions of the plurality of sliding grooves on the first fixing frame 31 may be different from the positions of the plurality of sliding grooves on the second fixing frame 32, for example, as shown in fig. 13, the sliding grooves 312 and the sliding grooves 322 may be arranged in a staggered manner in the axial direction parallel to the main shaft 1, so as to improve the space utilization rate of the rotating mechanism 20.

In some embodiments, as shown in fig. 12-14, the rotating mechanism 20 may further include a synchronous damping member 7. As shown in fig. 14, the synchronization damper 7 includes a first synchronization swing arm 71, a second synchronization swing arm 72, and a gear group 73. The first synchronization swing arm 71 includes a sliding end 711 and a rotating end 712. The rotating end 712 of the first synchronous swing arm 71 is rotatably connected with the main shaft 1, the sliding end 711 of the first synchronous swing arm 71 is slidably connected with the first fixing frame 31, and the sliding end 711 of the first synchronous swing arm 71 slides relative to the first fixing frame 31 in the process of folding or unfolding the first shell 10 and the second shell 30 relative to each other. The second synchronizing swing arm 72 includes a sliding end 721 and a rotating end 722. The rotating end 722 of the second synchronizing swing arm 72 is rotatably connected with the main shaft 1, the sliding end 721 of the second synchronizing swing arm 72 is slidably connected with the second fixing frame 32, and the sliding end 721 of the second synchronizing swing arm 72 slides relative to the second fixing frame 32 in the process of folding or unfolding the first housing 10 and the second housing 30 relative to each other.

In some embodiments, as shown in fig. 12 to 14, the first fixing frame 31 has a third sliding groove 313, and a side wall of the third sliding groove 313 may have a recessed guide space 3131. Wherein the guiding direction of the guiding space 3131 of the third sliding chute 313 is the same as the guiding direction of the guiding space 3121 of the second sliding chute 312. The sliding end 711 of the first synchronizing swing arm 71 includes a third flange 7111 at the peripheral side, and the third flange 7111 is mounted in the guide space 3131 of the third sliding groove 313, so that the sliding end 711 of the first synchronizing swing arm 71 is slidably connected with the third sliding groove 313, thereby slidably connecting the first synchronizing swing arm 71 with the first fixing frame 31. In the present embodiment, the guiding space 3131 of the third sliding groove 313 is matched with the third flange 7111 of the first synchronization swinging arm 71, so that the sliding end 711 of the first synchronization swinging arm 71 can be guided in the sliding direction of the third sliding groove 313, and the relative sliding motion between the first synchronization swinging arm 71 and the first fixed frame 31 is easier to realize and has higher control precision.

In some embodiments, as shown in fig. 12 to 14, the second fixing frame 32 has a fourth slide groove 323, and a sidewall of the fourth slide groove 323 may have a recessed guide space 3231. Here, the guide direction of the guide space 3231 of the fourth link 323 is the same as the guide direction of the guide space 3221 of the first link 322. The sliding end 721 of the second synchronizing swing arm 72 includes a fourth flange 7211 on the peripheral side, and the fourth flange 7211 is mounted in the guide space 3231 of the fourth slide groove 323, so that the sliding end 721 of the second synchronizing swing arm 72 is slidably connected to the fourth slide groove 323, thereby slidably connecting the second synchronizing swing arm 72 to the second fixing frame 32. In this embodiment, the guiding space 3231 of the fourth sliding groove 323 is engaged with the fourth flange 7211 of the second synchronizing swing arm 72, so that the sliding end 721 of the second synchronizing swing arm 72 can be guided in the sliding direction of the fourth sliding groove 323, and the relative sliding motion between the second synchronizing swing arm 72 and the second fixing frame 32 can be realized more easily and with higher control precision.

In the embodiment, since the rotating end 712 of the first synchronizing swing arm 71 and the rotating end 722 of the second synchronizing swing arm 72 are meshed with each other through the gear set 73, the synchronizing assembly 70 composed of the first synchronizing swing arm 71, the second synchronizing swing arm 72 and the gear set 73 has a simple structure, a controllable motion process and high accuracy.

For example, the structure of the second synchronizing swing arm 72 may be substantially the same as the structure of the first synchronizing swing arm 71, so as to simplify the material type of the rotating mechanism 20 and reduce the design difficulty and cost of the rotating mechanism 20.

It is understood that, as shown in fig. 12 to 14, in the present embodiment, the first fixing frame 31 may be an integrally formed structural member, and includes a first connecting block 311, a second sliding groove 312, and a third sliding groove 313. In other embodiments, the first fixing frame 31 may include a plurality of structural members, and the first connecting block 311, the second sliding groove 312 and the third sliding groove 313 may be formed on different structural members, which is not limited in this application. As shown in fig. 12 to 14, in the present embodiment, the second fixing frame 32 may be an integrally formed structural member, and includes a second connecting block 321, a first sliding groove 322, and a fourth sliding groove 323. In other embodiments, the second fixing frame 32 may include a plurality of structural members, and the second connecting block 321, the first sliding groove 322 and the fourth sliding groove 323 may be formed on different structural members, which is not limited in this application.

As shown in fig. 14, in some embodiments, the first fixing frame 31 may have a plurality of fastening holes 314, and referring to fig. 8, the plurality of fastening holes 314 of the first fixing frame 31 may be aligned with the plurality of fastening holes 1021 of the first positioning plate 102, and the first fixing frame 31 and the first positioning plate 102 are fixed by a fastening member, thereby fixing the first fixing frame 31 to the first housing 10. Fasteners include, but are not limited to, screws, bolts, rivets, pins, and the like. Since the first fixing frame 31 and the first housing 10 are fixed to each other, the first housing 10 and the first fixing frame 31 move synchronously, and the rotating mechanism 20 can control the movement track of the first housing 10 by controlling the movement track of the first fixing frame 31. In other embodiments, other connection structures may be formed between the first fixing frame 31 and the first casing 10, which is not strictly limited in this application.

As shown in fig. 14, in some embodiments, the second fixing frame 32 may have a plurality of fastening holes 324, and referring to fig. 9, the plurality of fastening holes 324 of the second fixing frame 32 may be aligned with the plurality of fastening holes 3021 of the second positioning plate 302, and the second fixing frame 32 and the second positioning plate 302 are fixed by fastening members, so as to fix the second fixing frame 32 to the second housing 30. Fasteners include, but are not limited to, screws, bolts, rivets, pins, and the like. Since the second fixing frame 32 and the second housing 30 are fixed to each other, the second housing 30 and the second fixing frame 32 move synchronously, and the rotating mechanism 20 can control the movement track of the second housing 30 by controlling the movement track of the second fixing frame 32. In other embodiments, other connecting structures may be formed between the second fixing frame 32 and the second casing 30, which is not strictly limited in this application.

The flexible display screen is of a multilayer structure. The layers are bonded, for example, by an OCA optical cement, which is elastomeric. When electronic equipment buckles, flexible display screen can produce with the opposite tension of direction of buckling, because the tension accumulation of each layer leads to flexible display screen to take place deformation at the in-process of buckling, takes place the staggered floor between the layer of flexible display screen. When the electronic device recovers the flattening state, the bending portion 2002 of the flexible display screen 200 has a crease due to the influence of the physical characteristics on the self-healing time of the screen, so that the smoothness of the flexible display screen is reduced, and the user experience is influenced. When the flexible display screen 200 is repeatedly folded, the deformation of the screen is difficult to recover, and the problem of screen crease is increasingly serious.

According to the embodiment of the application, the crease recovery of the flexible display screen 200 is accelerated through the supporting force between the folding structural members, so that the flattening effect of the screen is improved.

In some embodiments, as shown in fig. 12-14, the rotating mechanism 20 may further include a first damper 91. The first damper 91 is disposed on the first fixing frame 31, and the first rotation arm 51 abuts against the first damper 91. Wherein, the first elastic component may include a first damper 91 and a first fixing frame 31. The embodiment of the present application accelerates the crease recovery of the flexible display screen 200 by the abutting force between the first rotation arm 51 and the first damping member 91.

Fig. 15 is an exploded view of a portion of the structure shown in fig. 12-14. The structure shown in fig. 15 includes a first damper 91, a part of the first fixing frame 31, and a first rotation arm 51.

As shown in fig. 12 and 14, the first rotation arm 51 is coupled to the first coupling block 311 of the first fixing frame 31 by a rotation shaft 5112. The first connecting block 311 has a claw shape, the first end 511 of the first rotating arm 51 has a claw shape, and the claw-shaped first connecting block 311 and the claw-shaped first end 511 are alternately connected. Specifically, the first end 511 of the first rotation arm 51 is provided with a connection hole 5111, and the first connection block 311 is provided with a connection hole 3111. The rotating shaft 5112 is inserted into the connecting hole 5111 and the connecting hole 3111, so that the first end 511 of the first rotating arm 51 is connected to the first connecting block 311 in a staggered manner, and the first rotating arm 51 is connected to the first connecting block 311.

As shown in fig. 15, in some embodiments, the first damping member 91 may include a first bracket 911 and a first elastic member 912. The first support 911 is a rigid structure and is not easily deformed by an external force. The first elastic member 912 has an elastic structure and is easily deformed by an external force.

As shown in fig. 14 and 15, in some embodiments, the first fixing frame 31 further has a first mounting groove 319, and the first damping member 91 is disposed in the first mounting groove 319. The middle of the wall of the first mounting groove 319 is recessed to form a guide space 3191 of the first mounting groove 319. The first bracket 911 of the first damper 91 has a seventh flange 9112. The seventh flange 9112 of the first bracket 911 is fitted with the guide space 3191 of the first mounting groove 319 to realize the sliding connection of the first bracket 911 and the first mounting groove 319. Wherein the guide space 3191 has a length greater than that of the flange 9112 so that the first bracket 911 can slide in the first mounting groove 319.

As shown in fig. 15, the first end 911a of the first bracket 911 of the first damper 91 includes a third connecting block 9113 (first structural member), the third connecting block 9113 may be claw-shaped, the third connecting block 9113 and the first connecting block 311 are alternately arranged, and the claw-shaped third connecting block 9113 abuts against the claw-shaped first end 511 of the first rotating arm 51. The second end 911b of the first bracket 911 elastically abuts against the first fixing frame 31 through the first elastic member 912. Therefore, the first damper 91 abuts against the first rotating arm 51, and the first damper 91 elastically abuts against the first fixing frame 31, so that the abutting force between the first rotating arm 51 and the first damper 91 is transmitted to the first fixing frame 31 through the first damper 91. Referring to fig. 7, since the first fixing frame 31 is fixedly connected to the first housing 10, the first housing 10 is fixedly connected to the first non-bending portion 2001 of the flexible display screen 200. Therefore, through the fixed connection among the first fixing frame 31, the first housing 10 and the flexible display screen 200, the abutting force between the first rotating arm 51 and the first damping member 91 can be transmitted to the first non-bending portion 2001 of the flexible display screen 200, so that the crease recovery of the flexible display screen 200 is accelerated, and the flattening effect of the screen is improved.

In some embodiments, as shown in fig. 15, the second end 911b of the first bracket 911 may include a plurality of guide posts 9111, the plurality of guide posts 9111 being disposed at intervals from one another. The first elastic member 912 may include a plurality of springs 9121, and the plurality of springs 9121 are sleeved on the plurality of guide posts 9111 in a one-to-one correspondence. The first end 9121a of the spring 9121 abuts the first bracket 911, for example, the first end 9121a of the spring 9121 abuts the third connecting block 9113 of the first bracket 911. The second end 9121b of the spring 9121 abuts the first fixing frame 31, for example, the second end 9121b of the spring 9121 abuts the stop block 310. The stop block 310 is fixedly disposed on the first fixing frame 31. The third connecting block 9113, the spring 9121, and the stopper block 310 are sequentially arranged in the first direction P1. The first direction P1 is parallel to the length direction of the first elastic element 912 and away from the main shaft 1. A gap is provided between the first bracket 911 and the stop block 310 to reserve a space for the first bracket 911 to slide in the first mounting groove 319. Since the first bracket 911 abuts against the first rotation arm 51, the abutting force of the first end 511 of the first rotation arm 51 against the first bracket 911 may push the first bracket 911 to slide in the first direction P1 with respect to the guide space 3191 of the first mounting groove 319. When the first bracket 911 slides along the first direction relative to the first mounting groove 319, the second end 9121b of the spring 9121 abuts against the stop block 310, the spring 9121 compresses to generate elastic deformation, and the spring 9121 generates elastic force. Due to the abutting relation between the spring 9121 and the stop block 310 of the first fixing frame 31, when the spring 9121 compresses, the elastic force is transmitted to the first fixing frame 31, and the force in the first direction is transmitted to the first non-bending portion 2001 of the flexible display screen 200 through the first fixing frame 31 and the first housing 10, so that the crease recovery of the flexible display screen 200 is accelerated, and particularly the quick recovery of the crease at the bending portion 2002 of the flexible display screen 200 is accelerated.

In the embodiment of the present application, the spring is an embodiment of the elastic structure, and is not limited to the elastic structure. The elastic structure can be a structure which is easy to generate elastic deformation under the action of external force and can be restored to the original shape after the external force is removed. For example, in one embodiment, the elastic structure may also be an elastic rubber. The fit relationship between the elastic structure and the first bracket is not limited to a sleeved relationship, and may be an abutting relationship, for example. For convenience of explanation, the embodiments of the present application are described by taking a spring as an example.

In the bending process of the electronic equipment, the flexible display screen is deformed differently under different bending angles. For example, when the flexible display screen is in a closed state, the tension between the layers of the flexible display screen is the largest, the relative position dislocation between the layers is serious, and the deformation of the flexible display screen is large. When the flexible display screen is restored to the flattening state from the bending state, the bending part of the flexible display screen can be creased due to the fact that screen deformation needs restoring time. Therefore, when the flexible display screen is in different states, different forces are applied to the flexible display screen, which helps to ensure the structural reliability of the flexible display screen.

Fig. 16 is a schematic cross-sectional view of the folding device 100 shown in fig. 2 in a flattened state corresponding to the position of the first rotary arm 51 (i.e., the cross-sectional line a1-a1 shown in fig. 12 and 15), and fig. 17 is a schematic cross-sectional view of the folding device 100 shown in fig. 2 in a closed state corresponding to the position of the first rotary arm 51 (i.e., the cross-sectional line a1-a1 shown in fig. 12 and 15).

As shown in fig. 16 and 17, the first end 511 of the first rotation arm 51 is designed as a special-shaped structure. For example, as shown in fig. 16, when the first housing 10 and the second housing 30 are relatively unfolded to the flat state, a first position of the third connecting block 9113 of the first bracket 911 abuts against a first position of the first end 511 of the first rotating arm 51, that is, a first position of the first structural member abuts against a first position of the second structural member. The holding force of the first rotating arm 51 against the first bracket 911 is F₁. Wherein, F_1xIs F₁A force component in a first direction P1, F_1yIs F₁A component force in a second direction P2. Wherein the second direction P2 is perpendicular to the first direction P1 and the second direction P2 is perpendicular to the length direction of the main shaft 1. As described above, the force component F in the first direction_1xSo that the spring 9121 is compressed to generate deformation, the length of the compressed spring 9121 is X1, and the elastic deformation of the spring 9121 is delta X1. According to Hooke's law, the magnitude of the spring force is proportional to the amount of elastic deformation of the spring. Therefore, when the first casing 10 and the second casing 30 are relatively unfolded to the flat state, the elastic force of the spring in the first direction P1 is F_k1K · Δ X1, where k is a constant.

For example, as shown in fig. 17, when the first casing 10 and the second casing 30 are folded relatively to each other to a middle state or a closed state, the abutting force of the first rotating arm 51 against the first bracket 911 is F₂. Wherein, F_2xIs F₂A force component in a first direction P1, F_2yIs F₂A component force in a second direction P2. As described above, the force component F in the first direction_2xThe spring 9121 can be compressed to generate deformation, the length of the compressed spring 9121 is X2, the elastic deformation of the spring 9121 is delta X2, and therefore the elastic force of the spring in the first direction P1 is F_k2K · Δ X2, where k is a constant.

When the first housing 10 and the second housing 30 are relatively unfolded to the flat state, a second position of the third connecting block 9113 of the first bracket 911 abuts against a second position of the first end 511 of the first rotating arm 51, that is, a second position of the first structural member abuts against a second position of the second structural member, wherein the first position of the first structural member is different from the second position of the first structural member, and the first position of the second structural member is different from the second position of the second structural member. The holding force F of the first rotating arm 51 against the first bracket 911₁Component force F in a first direction_1xWhen the force F is greater than the force F of the first rotating arm 51 against the first bracket 911 when the first casing 10 and the second casing 30 are folded to the middle state or the closed state₂Component force F in a first direction_2x. Therefore, the compression amount Δ X1 of the spring is larger than Δ X2. Further, F_k1Greater than F_k2I.e. the first housing 10 and the second housing30 is relatively unfolded to be in a flat state, the force F transmitted by the spring 9121 to the first fixing frame 31_k1When the first and

second housings

10 and 30 are folded to a middle state or a closed state, the force F transmitted by the first elastic element 912 to the first fixing frame 31 is greater than_k2. Therefore, when the first casing 10 and the second casing 30 are relatively unfolded to the flattened state, F_k1The elastic force is transmitted to the first non-bending portion 2001 of the flexible display 200 through the first fixing frame 31 and the first housing 10, so as to urge the crease of the flexible display 200 to be restored.

In another possible implementation, when the first housing 10 and the second housing 30 are folded to an intermediate state or a closed state, the spring 9121 may be in a free state or an extended state.

Fig. 18 is a schematic diagram comparing the lengths of springs in a flattened state (above fig. 18) and a folded state (below fig. 18) of the electronic device.

Illustratively, as shown in fig. 18, the first end 511 of the first rotating arm 51 abuts against the third connecting block 9113 of the first bracket 911. The distance between the axis of the stop block 310 and the axis of the rotation shaft 5112 in the direction parallel to the length direction of the first elastic member 912 is L. Since the stop block 310 and the connection hole 3111 are fixedly disposed on the first fixing frame, the distance L is not changed when the relative position between the rotation shaft 5112 and the connection hole 3111 of the first fixing frame 31 in the first direction P1 is not changed. The abutting surface of the first elastic piece 912 and the third connecting block 9113 is P.

Referring to fig. 16 and 18, when first housing 10 and second housing 30 are expanded to be in a flattened state, spring 9121 is in a compressed state. Illustratively, the length of the spring 9121 is X1, the distance between the axis of the rotary shaft 5112 and the abutment surface P in the first direction is Y1, and L is X1+ Y1.

Referring to fig. 17 and 18, when the first housing 10 and the second housing 30 are folded to an intermediate state or a closed state, the spring 9121 may be in a compressed state. Illustratively, the length of the spring 9121 is X2, the distance between the axis of the rotary shaft 5112 and the abutment surface P in the first direction is Y2, and L is X2+ Y2.

Since the first end 511 of the first rotation arm 51 has the odd-shaped structure, Y1 is greater than Y2, and thus X1 is less than X2. Therefore, by the design of the special-shaped structure of the first end 511 of the first rotating arm 51, when the first housing 10 and the second housing 30 are folded to different states, the length of the spring 9121 is different, that is: the spring 9121 has different elastic deformation amounts, and the spring 9121 has different elastic force transmitted to the first fixing frame 31, so the force transmitted by the spring 9121 to the flexible display 200 through the first fixing frame 31 and the first housing 10 is different.

In one possible implementation, the abutting surface Q (not shown) of the third connecting block 9113 and the first end 511 of the first rotating arm 51 is perpendicular to the first direction P1, and at this time, the distance between the axis of the rotating shaft 5112 and the abutting surface Q when the electronic device 1000 is in the flat state is greater than the distance between the axis of the rotating shaft 5112 and the abutting surface Q when the electronic device 1000 is in the closed state.

In one possible implementation, the third connecting block 9113 may be a shaped structure such that the length of the spring 9121 when the first casing 10 and the second casing 30 are relatively unfolded to the flat state is smaller than the length of the spring 9121 when the first casing 10 and the second casing 30 are relatively folded to the intermediate state or the closed state.

Illustratively, through the special-shaped structure design of the first end 511 of the first rotating arm 51 and/or the third connecting block 9113, when the first housing 10 and the second housing 30 are folded to different states, the first end 511 of the first rotating arm 51 abuts against the third connecting block 9113 of the first bracket 911 at different positions, and the abutting force of the first rotating arm 51 against the first bracket 911 is different, so that the length of the spring 9121 is different, and the force transmitted to the flexible display screen 200 is different. That is, a first location of the first end 511 of the first rotation arm 51 is different from a second location of the first end 511 of the first rotation arm 51, and/or a first location of the third connecting block 9113 is different from a second location of the third connecting block 9113, i.e., the first location of the first structural member is different from the second location of the first structural member, and/or the first location of the second structural member is different from the second location of the second structural member.

Fig. 19 is a schematic view of a closed state of a conventional flexible display panel. Illustratively, the flexible display screen 200 is a three-layer composite structure. As shown in fig. 19, the arrow direction is a tension direction in the bending process of the flexible display screen, when the included angle α between the first housing 10 and the second housing 30 is reduced to 0 °, the flexible display screen 200 is in a closed state, an outward tension is generated at the bending portion 2002 of the flexible display screen 200, the flexible display screen 200 is deformed, and the three-layer structure at a position a shown in fig. 19 is subjected to a layered dislocation.

Fig. 20 is a schematic view showing a state where a conventional flexible display panel is flattened. As shown in fig. 20, when the flexible display panel 200 is unfolded from the closed state to the flattened state, the tension of the flexible display panel 200 becomes small, and the layered dislocation of the three-layer structure at a shown in fig. 20 is reduced. Since the flexible display 200 needs a recovery time for deformation, a folding line may appear in the area of the bending portion 2002 when the flexible display 200 is unfolded.

Fig. 21 is a schematic state diagram of flattening of the flexible display screen according to this embodiment. As shown in fig. 21, when the electronic device 1000 is unfolded from the closed state to the flat state, referring to fig. 16 to 18, a component force F parallel to the length direction of the spring 9121, i.e., the first direction P1_1xThe spring 9121 is deformed, and the spring 9121 generates an elastic force F_k1And then transmitted to the first non-bent portion 2001 of the flexible display panel 200. The force F transmitted by the spring 9121 to the first fixing frame 31 when the electronic device 1000 is in the flat state_k1The force F transmitted by the first elastic element 912 to the first fixing frame 31 is larger than the force F transmitted by the first elastic element 912 to the first fixing frame 31 when the electronic device 1000 is in the closed state_k2The length X1 of the spring 9121 in the flattened state of the electronic device 1000 is less than the length X2 of the spring 9121 in the closed state of the electronic device 1000. Therefore, by the arrangement of the first damper 91, the force in the first direction P1 received by the first non-bent portion 2001 of the flexible display 200 in the flat state is greater than the force in the first direction P1 received in the closed state.

In some embodiments, as shown in fig. 12-14, the rotation mechanism 20 may further include a second damping member 92. The second damper 92 may be disposed on a side of the rotating mechanism 20 close to the second housing 30. Wherein the second damping member 92 may include a second elastic member 922. Wherein the second elastic assembly may include a second damping member 92 and a second fixing frame 32. Similarly, since the second fixing frame 32 is fixedly connected to the second housing 30, the second housing 30 is fixedly connected to the second non-bending portion 2003 of the flexible display 200. Therefore, the force in the third direction P3 received by the second non-bent portion 2003 of the flexible display screen 200 in the flat state is greater than the force in the third direction P3 received by the second damper 92 in the closed state. The third direction P3 is parallel to the length direction of the second elastic member 922 and away from the main shaft 1.

In summary, when the electronic device 1000 is unfolded from the closed state to the unfolded state, the force applied to the first non-bending portion 2001 of the flexible display 200 in the first direction is greater than the force applied to the closed state in the first direction, and the force applied to the second non-bending portion 2003 in the third direction is greater than the force applied to the closed state in the third direction. Therefore, through the arrangement of the first damping member 91 and the second damping member 92, the phenomenon of layered dislocation of the flexible display screen 200 when the electronic device is unfolded from the closed state to the flat state can be reduced, the crease recovery of the flexible display screen 200 is accelerated, and the flat effect of the screen is improved.

For example, the second damping member 92 may have the same structure as the first damping member 91, so as to simplify the material type of the rotating mechanism 20 and reduce the design difficulty and cost of the rotating mechanism 20. The specific structure of the second damping member 92 is not described in detail in the embodiment of the present application. In other embodiments, the structure of the second damping member 92 may be different from that of the first damping member 91. Through setting up first damping piece 91 and second damping piece 92, can accelerate the recovery of electronic equipment flexible display screen crease when folding to expand, improve flexible display screen's roughness, improve user experience.

Referring to fig. 12, 15 and 22, fig. 22 is a schematic cross-sectional view of the structure shown in fig. 12 corresponding to the position of the first connection block 311 (i.e., the cross-section line a2-a2 shown in fig. 12 and 15).

As shown in fig. 22, the cross-sectional area of the coupling hole 3111 of the first fixing frame 31 is larger than the cross-sectional area of the rotary shaft 5112, so that the rotary shaft 5112 can move in the coupling hole 3111. In order to ensure the reliability of the folding structure during the unfolding or folding process, in some embodiments, the lengths of the connection hole 3111 and the rotation shaft 5112 in the direction perpendicular to the first damping member 91, i.e., the second direction P2, may be equal. As shown in fig. 22, in some embodiments, the cross-sectional shape of the connection hole 3111 is a waist circle. In other embodiments, the cross-sectional shape of the connection hole 3111 may be rectangular, oval, or the like.

Fig. 23a is a schematic diagram of the matching relationship between the rotary shaft 5112 and the connection hole 3111 in the early stage of use (above fig. 23 a) and after a period of use (below fig. 23 a) of the flexible screen.

As shown in fig. 23a, taking the cross-sectional shape of the connection hole 3111 as a waist shape as an example, in an early stage of use of the flexible display panel 200, for example, within 1 year of use, the rotation shaft 5112 is tangent to the connection hole 3111 at a position close to the first side wall of the first housing 10, i.e., at the left side of the waist shape shown in fig. 23a, and a distance between the axis of the rotation shaft 5112 and the stop block 310 in a direction parallel to the length direction of the first elastic member 912, i.e., the first direction P1, is L. When the first housing 10 and the second housing 30 are relatively unfolded to be in the flat state, the spring 9121 is in a compressed state. Referring to fig. 16, for example, the length of the spring 9121 is X1, the compression amount of the spring 9121 is Δ X1, the distance between the axial center of the rotating shaft 5112 and the contact surface P in the first direction P1 is Y1, and L is X1+ Y1.

As the using time becomes longer, for example, the using time of the folding device 100 exceeds two years, after the flexible display panel 200 is folded and aged for a plurality of times, the deformation generated by the screen staggering is difficult to return to the original state, and the flexible display panel 200 may become slightly longer. Since the first housing 10 is fixedly connected to the first non-bending portion 2001 of the flexible display 200, the first fixing frame 31 is fixedly connected to the first housing 10. As the flexible display panel 200 becomes longer, the first non-bending portion 2001 of the flexible display panel 200 drives the first housing 10 and the first fixing frame 31 to slightly move away from the main shaft 1, that is, the connection hole 3111 moves in a direction away from the main shaft 1 relative to the rotation shaft 5112, until the rotation shaft 5112 is tangent to a second side wall of the connection hole 3111 away from the first housing 10, that is, the right side of the oval shown in fig. 23 a. Wherein, the first sidewall and the second sidewall of the connection hole 3111 are opposite.

As shown in fig. 23a, after the flexible display panel 200 is aged for a period of time, the distance between the axis of the rotary shaft 5112 and the stop block 310 in the direction parallel to the length direction of the first elastic member 912 is L'. When the first housing 10 and the second housing 30 are relatively unfolded to be in the flat state, the spring 9121 is in a compressed state. Illustratively, the length of the spring 9121 is X3, the compression amount of the spring 9121 is Δ X3, the distance between the axial center of the rotating shaft 5112 and the contact surface P in the first direction P1 is Y3, and L' is X3+ Y3. As noted above, L' is greater than L.

Through the shape design of the connection hole 3111 of the first fixing frame 31, the folding device 100 may slightly stretch as the flexible display 200 ages, so that the flexible display 200 and the folding device 100 are more attached to each other, and the crease of the flexible display 200 is weakened.

As shown in fig. 23a, in one embodiment, when the first casing 10 and the second casing 30 are relatively unfolded to the flat state, the first end 511 of the first rotating arm 51 and the first connecting block 311 are always in contact with each other, and the contact position is kept unchanged. Therefore, the distance between the axial center of the rotary shaft 5112 and the contact surface P in the first direction P1 remains unchanged, that is, Y1 is equal to Y3. Thus, X1 is less than X3, i.e., the amount of compression of the spring Δ X3 is less than Δ X1. Therefore, after the flexible display screen 200 is used for a period of time and is aged, when the first housing 10 and the second housing 30 are relatively unfolded to the flat state, the compression amount of the spring 9121 is reduced, and the force transmitted by the spring 9121 to the flexible display screen 200 through the first fixing frame 31 and the first housing 10 is reduced.

FIG. 23b is a schematic diagram comparing the spring length of the electronic device in a flattened state (above FIG. 23 b) and in a folded state (below FIG. 23 b) after aging of the flexible display.

Illustratively, as shown in fig. 23b, the axial center of the stop block 310 and the axis of the rotation shaft 5112 has a distance L' parallel to the length direction of the first elastic element 912. Since the stop block 310 and the connection hole 3111 are fixedly disposed on the first fixing frame, the distance L' is not changed when the relative position between the rotation shaft 5112 and the connection hole 3111 of the first fixing frame 31 in the first direction P1 is not changed.

As shown in fig. 23b, when the first housing 10 and the second housing 30 are expanded to be flat, the spring 9121 is compressed. Illustratively, the length of the spring 9121 is X3, the distance between the axial center of the rotating shaft 5112 and the contact surface P in the first direction is Y3, and L' is X3+ Y3. The spring 9121 may be in a compressed state when the first casing 10 and the second casing 30 are folded relatively to each other to an intermediate state or a closed state. Illustratively, the length of the spring 9121 is X4, the distance between the axial center of the rotating shaft 5112 and the contact surface P in the first direction is Y4, and L' is X4+ Y4.

Since the first end 511 of the first rotation arm 51 has the odd-shaped structure, Y3 is greater than Y4, and thus X3 is less than X4. Similarly, by the design of the special-shaped structure of the first end 511 of the first rotating arm 51, when the flexible display panel 200 ages, the force applied to the first non-bending portion 2001 of the flexible display panel 200 in the first direction P1 in the flat state is greater than the force applied to the first non-bending portion in the first direction P1 in the closed state.

Referring to fig. 23a and 23b, after the flexible display panel 200 is aged and lengthened, the oval hole and the first end 511 of the first rotating arm 51 are designed to reduce the folding of the flexible display panel 200 in the flattened state.

As shown in fig. 14, for example, the shape of the coupling hole 3211 of the second holder 32 may be the same as or similar to the shape of the coupling hole 3111 of the first holder. Since the second housing 30 is fixedly connected to the second non-bending portion 2003 of the flexible display 200, the second fixing frame 32 is fixedly connected to the second housing 30. For the same or similar reasons as above, as the screen is used for a longer time, the rotating shaft 5212 can move in the connecting hole 3211, and the second non-bending portion 2003 of the flexible display 200 drives the second housing 30 and the second fixing frame 32 to slightly move away from the main shaft 1. In summary, because the flexible display screen 200 is fixed to the folding device 100, through the shape design of the connection hole 3111 of the first fixing frame 31 and the connection hole 3211 of the second fixing frame 32, the folding device 100 can slightly extend along with the aging and lengthening of the flexible display screen 200, so that the flexible display screen 200 is more attached to the folding device 100, the crease of the flexible display screen 200 is weakened, the flexible display screen 200 is more flat in the flattened state of the electronic device 1000, and the user experience is improved.

In some embodiments, the flexible display screen 200 may include a supporting plate 201, and the supporting plate 201 is disposed on a side of the flexible display screen 200 fixedly connected to the folding device 100, that is, a non-display side of the flexible display screen 200, so as to improve the overall strength of the flexible display screen 200. Specifically, the support plate 201 may be a plate-shaped structure having a certain rigidity, such as a metal plate, a glass plate, or a plastic plate. As shown in fig. 24, the support plate 201 includes a first fixing portion 2011, a connecting portion 2012, and a second fixing portion 2013 connected in this order. Illustratively, a through hole 2014 may be provided at the connecting portion 2012 to penetrate the upper and lower plate surfaces of the support plate 201, thereby reducing the rigidity of this region. When the flexible display screen 200 is aged and lengthened, the connecting part 2012 provided with the through hole 128 may be deformed, thereby deforming the supporting plate 201.

Referring to fig. 25 and 26, fig. 25 is a schematic view of middle connector assembly 20b shown in fig. 11, and fig. 26 is an exploded view of middle connector assembly 20b shown in fig. 25.

In some embodiments, the rotating mechanism 20 further includes a third fixing frame 33, a fourth fixing frame 34, a third transmission arm 40, and a fourth transmission arm 50. The third fixing frame 33 may be fixed to the first housing 10, and one end of the third transmission arm 40 is rotatably connected to the main shaft 1, and the other end is slidably connected to the third fixing frame 33. The fourth fixing frame 34 may be fixed to the second housing 30, and one end of the fourth transmission arm 50 is rotatably connected to the spindle 1, and the other end is slidably connected to the fourth fixing frame 34.

As shown in fig. 26, in some embodiments, the third fixing frame 33 may have a plurality of fastening holes 332, and the fourth fixing frame 34 may have a plurality of fastening holes 342. Referring to fig. 8, the fastening holes 332 of the third fixing frame 33 may be aligned with the fastening holes 1021 of the first positioning plate 102, and the third fixing frame 33 and the first positioning plate 102 are fastened by a fastener, so as to fix the third fixing frame 33 and the first housing 10. Referring to fig. 9, the fastening holes 342 of the fourth fixing frame 34 may be aligned with the fastening holes 3021 of the second positioning plate 302, and the third fixing frame 33 and the second positioning plate 302 are fastened by a fastening member, thereby fixing the fourth fixing frame 34 and the second housing 30. The fasteners may include, but are not limited to, screws, bolts, rivets, and the like. In other embodiments, other connection structures may be formed between the third fixing frame 33 and the first housing 10, and between the fourth fixing frame 34 and the second housing 30, which is not strictly limited in this application.

In the present embodiment, the rotating mechanism 20 is provided with the third fixing frame 33, the fourth fixing frame 34, the third transmission arm 40 and the fourth transmission arm 50 to increase the interaction force between the rotating mechanism 20 and the first casing 10 and the second casing 30, so that the folding device 100 is easier to fold and unfold.

As shown in fig. 26, in some embodiments, the third fixing frame 33 has a fifth sliding slot 331, and a sidewall of the fifth sliding slot 331 may have a recessed guide space 3311. The third driving arm 40 includes a sliding end 401, a rotating end 402, and a supporting block 403. The sliding end 401 of the third actuator arm 40 has a fifth flange 4011. Through the cooperation between the fifth flange 4011 and the guide space 3311 of the fifth slide slot 331, the sliding connection between the sliding end 401 of the third driving arm 40 and the fifth slide slot 331 can be achieved, so that the sliding connection between the third driving arm 40 and the third fixing frame 33 is achieved. The rotating end 402 of the third transmission arm 40 is arc-shaped, and the rotating end 402 of the third transmission arm 40 and the main shaft 1 can be rotatably connected through a virtual shaft. In other embodiments, the third transmission arm 40 and the main shaft 1 may be rotatably connected through a solid shaft, which is not strictly limited in this application. Specifically, the structural member and the main shaft 1 are matched with each other through a virtual shaft connecting finger structural member and an active space formed inside the main shaft 1, and the structural member and the main shaft 1 are connected with the main shaft 1 through a rotating shaft such as a pin through a solid shaft connecting finger structural member.

As shown in fig. 26, in some embodiments, the fourth fixing frame 34 has a sixth sliding groove 341, and a side wall of the sixth sliding groove 341 may have a recessed guide space 3411. The fourth driving arm 50 includes a sliding end 501, a rotating end 502, and a supporting block 503. The sliding end 501 of the fourth actuator arm 50 has a sixth flange 5011. By the cooperation between the sixth flange 5011 and the guide space 3411 of the sixth sliding groove 341, the sliding end 501 of the fourth driving arm 50 can be slidably connected to the sixth sliding groove 341, so that the sliding connection of the fourth driving arm 50 to the fourth fixing frame 34 can be achieved. The rotating end 502 of the fourth driving arm 50 is arc-shaped. The rotation end 502 of the fourth transmission arm 50 and the main shaft 1 can be connected in rotation through a virtual shaft. In other embodiments, the fourth transmission arm 50 and the main shaft 1 may be rotatably connected through a solid shaft, which is not strictly limited in this application.

Referring to fig. 27 and 28 together, fig. 27 is a schematic view of a partial structure of the rotating mechanism 20 shown in fig. 7, and fig. 28 is a schematic view of an exploded structure of the structure shown in fig. 27.

As shown in fig. 28, the first support plate 21 includes a first plate member 211 and a second plate member 212, and the first plate member 211 and the second plate member 212 are respectively located on both sides of the second transmission arm 42. The first plate member 211, the sliding end 421 of the second transmission arm 42 and the second plate member 212 are fixed in sequence by fasteners. The second support plate 22 includes a third plate 221 and a fourth plate 222, and the third plate 221 and the fourth plate 222 are respectively located at both sides of the first transmission arm 41. The third plate 221, the sliding end 411 of the first transmission arm 41, and the fourth plate 222 are fixed in sequence by fasteners. The first support plate 21 and the second support plate 22 are divided into two plates, so that the production and the manufacture can be facilitated. In other embodiments, the first support plate 21 and/or the second support plate 22 may be an integrally formed structural member.

In some embodiments, as shown in fig. 27 and 28, first support plate 21 is fixedly connected to sliding end 421 of second driving arm 42, and second support plate 22 is fixedly connected to sliding end 411 of first driving arm 41. The first shielding plate 23 is located on a side of the second plate 212 of the first supporting plate 21 facing away from the second transmission arm 42, and is fixedly connected to the second plate 212 of the first shielding plate 21. The second shielding plate 24 is located on a side of the second plate 222 of the second supporting plate 22, which faces away from the first transmission arm 41, and is fixedly connected to the second plate 222 of the second shielding plate 22. The first shielding plate 23 and the second plate 212, and the second shielding plate 24 and the fourth plate 222 may be fixed to each other by bonding or the like.

In this embodiment, the first support plate 21, the first shielding plate 23 and the second transmission arm 42 are assembled into one component, and the second support plate 22, the second shielding plate 24 and the first transmission arm 41 are assembled into one component, so that the second transmission arm 42 can control the movement tracks of the first support plate 21 and the first shielding plate 23, and the first transmission arm 41 can directly control the movement tracks of the second support plate 22 and the second shielding plate 24, so that the control precision of the movement processes of the first support plate 21, the second support plate 22, the first shielding plate 23 and the second shielding plate 24 is high, the return difference is small, and the expansion and contraction can be accurately realized in the rotation process of the folding device 100, so as to meet the support requirement of the flexible display 200 and the self-shielding requirement of the rotation mechanism 20.

Illustratively, first support plate 21 is secured to second drive arm 42 of first end coupling assembly 20a, and first support plate 21 is also secured to second drive arm 42 'of second end coupling assembly 20 a'; the first shielding plate 23 is fixed to the second driving arm 42 of the first end connecting assembly 20a, the first shielding plate 23 is further fixed to the second driving arm 42 'of the second end connecting assembly 20 a', the first supporting plate 21 is further fixed to the third driving arm 40 of the middle connecting assembly 20b, and the first shielding plate 23 is further fixed to the third driving arm 40 of the middle connecting assembly 20 b; the second support plate 22 is fixedly connected to the first transmission arm 41 of the first end connecting assembly 20a, the second support plate 22 is also fixedly connected to the first transmission arm 41 'of the second end connecting assembly 20 a', and the second support plate 22 can also be fixedly connected to the fourth transmission arm 50 of the middle connecting assembly 20 b; the second shielding plate 24 is fixedly connected to the first driving arm 41 of the first end connecting assembly 20a, the second shielding plate 24 is also fixedly connected to the first driving arm 41 'of the second end connecting assembly 20 a', and the second shielding plate 24 is also fixedly connected to the fourth driving arm 50 of the middle connecting assembly 20 b. At this time, the plurality of connecting assemblies (20a, 20 a', 20b) can drive the first support plate 21, the first shielding plate 23, the second support plate 22 and the second shielding plate 24 to move together, so as to reduce the difficulty of motion control and improve the precision of motion control.

In some embodiments, the driving arm and the supporting plate or the shielding plate may be fixedly connected by a fastener, for example: the sliding end of the driving arm is fixedly connected with the supporting plate through a fastener, or the sliding end of the driving arm is fixedly connected with the shielding plate through a fastener. Fasteners include, but are not limited to, screws, bolts, rivets, pins, and the like. Concave-convex matching structures can be arranged between the sliding ends of the transmission arms and the supporting plate and between the sliding ends of the transmission arms and the shielding plate, so that the assembling precision and the assembling reliability are improved.

In this embodiment, the structure of the second supporting plate 22 may be the same as or similar to that of the first supporting plate 21, and the structure of the second shielding plate 24 may be the same as or similar to that of the first shielding plate 23, so as to simplify the material type of the rotating mechanism 20 and reduce the design difficulty and cost of the rotating mechanism 20.

Referring to fig. 29 and 30 together, fig. 29 is a schematic structural view of the main inner shaft 15 shown in fig. 11, and fig. 30 is a schematic structural view of the main outer shaft 14 shown in fig. 11 at another angle.

In some embodiments, as shown in fig. 29, the main inner shaft 15 includes a main inner shaft body 151, a plurality of grooves 152, a plurality of tabs 153, two end stops 154, and a plurality of fastener holes 155. The main inner shaft body 151 may be divided into a plurality of sections to reduce weight. A plurality of protrusions 153 are formed on the main inner shaft body 151, a plurality of grooves 152 are formed on the main inner shaft body 151 and/or the plurality of protrusions 153, and the protrusions 153 and the grooves 152 are combined with each other to form a plurality of three-dimensional space structures. Two end stops 154 are fixed to both ends of the main inner shaft body 151. A plurality of fastening holes 155 are formed in the main inner shaft body 151. Wherein the reference numerals of part of the recess 152, part of the projection 153, and part of the fastening hole 155 are schematically indicated in fig. 29.

As shown in fig. 30, the main outer shaft 14 includes a main outer shaft body 141, a plurality of grooves 142, a plurality of projections 143, and a plurality of fastening holes 145. The main outer shaft body 141 has a substantially arc-shaped plate shape. A plurality of projections 143 are formed on the main outer shaft body 141, a plurality of grooves 142 are formed on the main outer shaft body 141 and/or the plurality of projections 143, and the projections 143 and the grooves 142 are combined with each other to form a plurality of spatial structures. A plurality of fastening holes 145 are formed at the plurality of projections 143. Wherein the reference numerals of part of the recess 142, part of the projection 143 and part of the fastening hole 145 are schematically indicated in fig. 30.

After the main outer shaft 14 and the main inner shaft 15 are fixed to each other, the main outer shaft body 141, the main inner shaft body 151, and the two end stoppers 154 together surround an inner space of the main shaft 1, the two end stoppers 154 are exposed, the plurality of fastening holes 145 of the main outer shaft 14 are aligned with the plurality of fastening holes 155 of the main inner shaft 15, and the main inner shaft 15 and the main outer shaft 14 are fixed by fasteners (not shown). Fasteners include, but are not limited to, screws, bolts, rivets, pins, and the like.

After the main outer shaft 14 and the main inner shaft 15 are assembled, a plurality of grooves and protrusions on the main outer shaft 14 and a plurality of grooves and protrusions on the main inner shaft 15 can jointly form a plurality of movable spaces of the main shaft 1, and structural members of a plurality of connecting assemblies (20a, 20 a', 20b) are movably mounted in the plurality of movable spaces of the main shaft 1, so that the main shaft 1 is connected. The split design of the main inner shaft 15 and the main outer shaft 14 is beneficial to reducing the manufacturing difficulty of the main shaft 1 and improving the manufacturing precision and the product yield of the main shaft 1.

Illustratively, the partial movable spaces of the plurality of movable spaces of the main shaft 1 have the same structure, and the partial movable spaces have different structures. The different structure activity spaces are used for matching with different structure members, so that the connection structure of the main shaft 1 and the plurality of connecting assemblies (20a, 20 a', 20b) is more flexible and diversified. The activity space that the structure is the same is used for cooperating with the structure that the structure is the same, is favorable to reducing the design degree of difficulty and the cost of main shaft 1 and coupling assembling.

It is understood that the spindle 1 in the embodiment of the present application may have other structures, and the present application is not limited thereto.

Fig. 31 is a schematic view of the partial structure shown in fig. 14 and the main shaft 1, and fig. 32 is a schematic view of the partial structure shown in fig. 31 and the main shaft 1. As shown in fig. 31, the main outer shaft 14 and the main inner shaft 15 together enclose a plurality of movable spaces forming the main shaft 1 for cooperating with different structural members of the connecting assembly.

In some embodiments, as shown in fig. 31, the rotating end 412 of the first transmission arm 41 is curved. The rotating end 412 of the first transmission arm 41 is rotatably connected to the main shaft 1. The rotation axis of the first transmission arm 41 relative to the main shaft 1 may be a first rotation axis 41C.

In some embodiments, as shown in fig. 32, the rotating end 412 of the first transmission arm 41 is engaged with the arc-shaped groove 142a of the main outer shaft 14 and the arc-shaped protrusion 153a of the main inner shaft 15, so as to achieve the rotating connection with the main shaft 1. The rotating end 412 of the first transmission arm 41 may further include a stopper protrusion 4121, and the stopper protrusion 4121 is formed at an inner position and/or an outer position of the rotating end 412. The arc-shaped groove 142a of the main outer shaft 14 may further include a limiting groove 1421a, the arc-shaped protrusion 153a of the main inner shaft 15 may further include a limiting groove 1531a, and the limiting protrusion 4121 of the first transmission arm 41 is matched with the limiting groove 1421a and/or the limiting groove 1531a of the main shaft 1, so that the first transmission arm 41 and the main shaft 1 are limited in the axial direction of the main shaft 1, and the reliability of the connection structure is improved. It can be understood that a limiting groove (1531a or 1421a) is arranged in the same moving space, so that the structural member can be limited in the axial direction of the spindle 1. Of course, in some embodiments, two limiting grooves (1531a and 1421a) may be disposed in the same activity space to increase the stability of the limiting. The main inner shaft 15 may further include a limiting groove 1531b and a limiting groove 1531b ', and both ends of the rotation shaft 6121 are respectively engaged with the limiting groove 1531b and the limiting groove 1531 b'.

In some embodiments, as shown in FIG. 31, rotating end 422 of second actuator arm 42 is arcuate. The rotating end 422 of the second transmission arm 42 is rotatably connected with the main shaft 1. The rotation axis of the second transmission arm 41 relative to the spindle 1 may be a second rotation axis 42C. The main shaft 1 accommodates the movable spaces of the first transmission arm 41 and the second transmission arm 42, and is a central symmetrical structure, and the matching relationship between the second transmission arm 42 and the main shaft 1 can refer to the matching relationship between the first transmission arm 41 and the main shaft 1, which is not described herein again.

In the embodiment, the first transmission arm 41 and the second transmission arm 42 are connected to the main shaft 1 through a virtual shaft, so that the rotating connection structure is simple, the occupied space is small, and the thickness of the rotating mechanism 20 is reduced, so that the folding device 100 and the electronic device 1000 are more easily thinned. In other embodiments, first transmission arm 41 and/or second transmission arm 42 may be connected to main shaft 1 through a solid shaft, which is not strictly limited in this embodiment of the present application.

The structure of the first end connecting assembly 20a will be described below with reference to a plurality of schematic diagrams and internal structure diagrams of the folding apparatus 100 in the flat state, the intermediate state, and the closed state, respectively.

Referring to fig. 33 and 34, fig. 33 is a partial structural schematic view of the folding device 100 shown in fig. 2 in a flattened state, fig. 34 is a sectional structural schematic view of the folding device 100 shown in fig. 2 in a flattened state corresponding to the position of the first driving arm 41 (i.e., the section line a1-a1 shown in fig. 12), and fig. 35 is a sectional structural schematic view of the folding device 100 shown in fig. 32 in a flattened state corresponding to another position of the first driving arm 41 (i.e., the section line A3-A3 shown in fig. 12 and 32).

As shown in fig. 33 and 34, when the first casing 10 and the second casing 30 are relatively unfolded to be in the flat state, the rotating end 412 of the first transmission arm 41 is rotatably connected to the main shaft 1, and the overlapping area of the rotating end 412 of the first transmission arm 41 and the main shaft 1 is the first overlapping area. Referring to fig. 14, the first flange 4111 of the sliding end 411 of the first driving arm 41 is slidably connected to the guiding space 3221 of the first sliding groove 322 of the second fixing frame 32. Referring to fig. 14, the first sliding slot 322 has an end a close to the main shaft 1 and an end B far away from the main shaft 1, that is, the distance between the end a of the first sliding slot 322 and the main shaft 1 in the first direction P1 is smaller than the distance between the end B of the first sliding slot 322 and the main shaft 1 in the first direction P1. As shown in fig. 34, when the first casing 10 and the second casing 30 are relatively unfolded to the flattened state, the distance between the first driving arm 41 and the B end of the first sliding slot 322 in the third direction P3 is a first distance D1. The first rotating arm 51 is linked with the first driving arm 41 through the first connecting member 61, referring to fig. 32 and fig. 35, the limiting groove 1531b of the main outer shaft 14 and the main inner shaft 15 together enclose to form an arc-shaped groove 156, one end of the rotating shaft 6121 is matched with the arc-shaped groove 156, and the rotating shaft 6121 is located at one end of the arc-shaped groove 156 close to the first housing 10. Similarly, the other end of the rotating shaft 6121 and the arc-shaped groove 156 '(which is paired with the arc-shaped groove 156 and has the same structure, not shown in the figure) surrounded by the limiting groove 1531 b' of the main outer shaft 14 and the main inner shaft 15 cooperate to realize the rotating connection of the first rotating arm 51 and the main shaft 1 together.

Referring to fig. 36 and 37 together, fig. 36 is a partial structural schematic diagram of the folding device 100 shown in fig. 2 in an intermediate state, fig. 37 is a sectional structural schematic diagram of the intermediate state of the folding device 100 shown in fig. 2 corresponding to the position of the first rotating arm 41 (i.e., the sectional line a1-a1 shown in fig. 12), and fig. 38 is a sectional structural schematic diagram of the intermediate state of the structure shown in fig. 31 corresponding to another position of the first rotating arm 41 (i.e., the sectional line A3-A3 shown in fig. 12 and 32).

As shown in fig. 36 and 37, during the process of relatively folding the first housing 10 and the second housing 30 from the unfolded state to the intermediate state, the rotating end 412 of the first driving arm 41 rotates relative to the main shaft 1, the first flange 4111 of the first driving arm 41 slides in the guiding space 3221 of the second fixing frame 32, that is, the first driving arm 41 slides in the first sliding groove 322, the first driving arm 41 gradually approaches the second fixing frame 32 and the second housing 30, and the second fixing frame 32 and the second housing 30 gradually approach the main shaft 1. Referring to fig. 38, the first rotating arm 51 is linked with the first driving arm 41 through the first connecting member 61, the second end 512 of the first rotating arm 51 is connected with the first connecting member 61 through the rotating shaft 6121, and the rotating shaft 6121 slides in the arc-shaped slot 156 and the arc-shaped slot 156', and the first fixing frame 31 and the first housing 10 gradually approach the spindle 1. When the first casing 10 and the second casing 30 are in the intermediate state, the overlapping area of the rotating end 412 of the first transmission arm 41 and the main shaft 1 is a second overlapping area, and the second overlapping area is smaller than the first overlapping area; the distance between the first driving arm 41 and the end B of the first sliding chute 322 in the third direction P3 is a second distance D2, and the second distance D2 is smaller than the first distance D1.

Referring to fig. 39 and 40 together, fig. 39 is a partial structural schematic diagram of the folding device 100 shown in fig. 2 in a closed state, and fig. 40 is a sectional structural schematic diagram of the folding device 100 shown in fig. 2 in a closed state corresponding to the position of the first rotating arm 41 (i.e., the section line a1-a1 shown in fig. 12).

As shown in fig. 39 and 40, during the process of relatively folding the first housing 10 and the second housing 30 from the intermediate state to the closed state, the rotating end 412 of the first transmission arm 41 continues to rotate relative to the main shaft 1, the first flange 4111 of the first transmission arm 41 slides in the guiding space 3221 of the second fixing frame 32, that is, the first transmission arm 41 slides in the first sliding groove 322, the first transmission arm 41 continues to approach the second fixing frame 32 and the second housing 30, and the second fixing frame 32 and the second housing 30 continue to approach the main shaft 1. The first rotating arm 51 is linked with the first driving arm 41 through the first connecting member 61, and the first fixing frame 31 and the first housing 10 continue to approach the main shaft 1. When the first casing 10 and the second casing 30 are in the closed state, the overlapping area of the rotating end 412 of the first transmission arm 41 and the main shaft 1 is a third overlapping area, and the third overlapping area is smaller than the second overlapping area; the distance between the first driving arm 41 and the end B of the first sliding chute 322 in the third direction P3 is a third distance D3, and the third distance D3 is smaller than the second distance D2. Illustratively, the third distance D3 may be close to zero.

Referring to fig. 41 to 43, fig. 41 is a schematic cross-sectional view of the folding apparatus 100 shown in fig. 2 in a flattened state corresponding to a position of the second transmission arm 42 (i.e., a cross-sectional view along line B-B shown in fig. 12), fig. 42 is a schematic cross-sectional view of the folding apparatus 100 shown in fig. 2 in an intermediate state corresponding to a position of the second rotation arm 42 (i.e., a cross-sectional view along line B-B shown in fig. 12), and fig. 43 is a schematic cross-sectional view of the folding apparatus 100 shown in fig. 2 in a closed state corresponding to a position of the second rotation arm 42 (i.e., a cross-sectional view along line B-B shown in fig. 12). Fig. 41 to 43 illustrate the change in the position of the second transmission arm 42 during the transition of the folding device 100 from the unfolded state to the closed state.

As shown in fig. 41, when the first casing 10 and the second casing 30 are relatively unfolded to be in the flat state, the overlapping area of the rotating end 422 of the second transmission arm 42 and the spindle 1 is a fourth overlapping area. Referring to fig. 14, the second flange 4211 of the sliding end 421 of the second transmission arm 42 is slidably connected to the guiding space 3121 of the second sliding groove 312 of the first fixing frame 31. Referring to fig. 14, the second sliding slot 312 has an end a 'close to the main shaft 1 and an end B' far away from the main shaft 1, i.e. the distance between the end a 'of the second sliding slot 312 and the main shaft 1 in the first direction P1 is smaller than the distance between the end B' of the second sliding slot 312 and the main shaft 1 in the first direction P1. As shown in fig. 41, the second transmission arm 42 is spaced apart from the B' end of the second sliding slot 312 by a fourth distance D4 in the first direction P1. The second rotating arm 52 is linked with the second transmission arm 42 through the second link 62.

As shown in fig. 42, during the process of relatively folding the first housing 10 and the second housing 30 from the flat state to the intermediate state, the rotating end 422 of the second transmission arm 42 rotates relative to the main shaft 1, the second flange 4211 of the second transmission arm 42 slides in the guide space 3121 of the first fixing frame 31, that is, the second transmission arm 42 slides in the second sliding slot 312, the second transmission arm 42 gradually approaches the first fixing frame 31 and the first housing 10, and the first fixing frame 31 and the first housing 10 gradually approach the main shaft 1. The second rotating arm 52 is linked with the second transmission arm 42 through the second connecting member 62, and the second fixed frame 32 and the second housing 30 gradually approach the main shaft 1. When the first housing 10 and the second housing 30 are in the intermediate state, the overlapping area of the rotating end 422 of the second transmission arm 42 and the main shaft 1 is a fifth overlapping area, and the fifth overlapping area is smaller than the fourth overlapping area; the second driving arm 42 is spaced apart from the end B' of the second sliding slot 312 by a fifth distance D5 in the first direction P1, and the fifth distance D5 is smaller than the fourth distance D4.

As shown in fig. 43, during the relative folding process of the first housing 10 and the second housing 30 from the intermediate state to the closed state, the rotating end 422 of the second transmission arm 42 rotates relative to the main shaft 1, the second flange 4211 of the second transmission arm 42 slides in the guiding space 3121 of the first fixing frame 31, that is, the second transmission arm 42 slides in the second sliding slot 312, the second transmission arm 42 continues to approach the first fixing frame 31 and the first housing 10, and the first fixing frame 31 and the first housing 10 continue to approach the main shaft 1. The second rotating arm 52 is linked with the second transmission arm 42 through the second connecting member 62, and the second fixed frame 32 and the second housing 30 continue to approach the main shaft 1. When the first casing 10 and the second casing 30 are in the closed state, the overlapping area of the rotating end 422 of the first transmission arm 42 and the main shaft 1 is a sixth overlapping area, and the sixth overlapping area is smaller than the fifth overlapping area; the distance between the second driving arm 42 and the end B' of the second sliding slot 312 in the first direction P1 is a sixth distance D6, and the sixth distance D6 is smaller than the fifth distance D5. Illustratively, the sixth distance D6 may be close to zero.

That is, in the process of relatively folding the first casing 10 and the second casing 30 from the unfolded state to the closed state, the overlapping areas of the rotating ends 412 and 422 of the first transmission arm 41 and the second transmission arm 42 and the main shaft 1 gradually decrease, and the distance between the first transmission arm 41 and the second casing 30 gradually decreases. The distance between the second transmission arm 42 and the first housing 10 gradually decreases, and the first housing 10 and the second housing 30 gradually approach the main shaft 1.

As shown in fig. 31 and 34, when the first casing 10 and the second casing 30 are folded from the flat state to the closed state, the first transmission arm 41 rotates about the first rotation axis 41C. As shown in fig. 34, a first rotation axis 41C of the first transmission arm 41 that rotates relative to the main shaft 1 is close to the main inner shaft 15 and away from the main outer shaft 14, and close to the second fixed frame 32 and away from the first fixed frame 31. As shown in fig. 31 and 41, when first housing 10 and second housing 30 are folded from the flat state to the closed state, second transmission arm 42 rotates about second rotation axis 42C. As shown in fig. 41, a second rotation axis 42C of the second transmission arm 42 rotating relative to the main shaft 1 is close to the main inner shaft 15 and away from the main outer shaft 14, and close to the first fixing frame 31 and away from the second fixing frame 32.

In the present embodiment, by setting the positions of the first rotation axis 41C and the second rotation axis 42C, the rotation mechanism 20 can easily realize the in-housing pulling movement during the process of changing the folding device 100 from the unfolded state to the closed state and the in-housing pushing movement during the process of changing the folding device 100 from the closed state to the unfolded state, and realize the deforming movement with the flexible display 200 as the neutral plane.

In some embodiments, as shown in fig. 12 and 25, during the unfolding or folding process of the folding device 100, the first transmission arm 41 rotates around the first rotation axis 41C, that is, the first transmission arm 41 rotates around the first rotation axis 41C relative to the main shaft 1. The second transmission arm 42 rotates around the second rotation axis 42C, that is, the second transmission arm 42 rotates around the second rotation axis 42C relative to the main shaft 1. The third transmission arm 40 rotates around the third rotation axis 40C, that is, the third transmission arm 40 rotates around the third rotation axis 40C relative to the main shaft 1. The fourth transmission arm 50 rotates around the fourth rotation axis 50C, that is, the fourth transmission arm 50 rotates around the fourth rotation axis 50C relative to the main shaft 1. The rotation axis 40C of the third transmission arm 40 relative to the main shaft 1 is collinear with the rotation axis 42C of the second transmission arm 42 relative to the main shaft 1. The rotation axis 50C of the fourth transmission arm 50 relative to the main shaft 1 is collinear with the rotation axis 41C of the first transmission arm 41 relative to the main shaft 1.

In the present embodiment, since the rotation axes of the third transmission arm 40 and the second transmission arm 42 rotating relative to the main shaft 1 are collinear, and the third transmission arm 40 is slidably connected to the third fixing frame 33; the fourth transmission arm 50 is collinear with the rotation axis of the first transmission arm 41 relative to the main shaft 1, and the fourth transmission arm 50 is slidably connected with the fourth fixing frame 34. Therefore, the movement of the third transmission arm 40 can be synchronized with the movement of the second transmission arm 42, and the movement of the fourth transmission arm 50 can be synchronized with the movement of the first transmission arm 41, so that the structural design and connection relationship of the swing mechanism 20 can be simplified, and the reliability of the swing structure can be improved.

In the embodiment of the present application, as shown in fig. 33 to 43, since the rotating end 412 of the first transmission arm 41 is rotatably connected to the spindle 1, the sliding end 411 is slidably connected to the second fixing frame 32, the second fixing frame 32 is fixed to the second housing 30, the rotating end 422 of the second transmission arm 42 is rotatably connected to the spindle 1, the sliding end 421 is slidably connected to the first fixing frame 31, and the first fixing frame 31 is fixed to the first housing 10. Therefore, during the relative rotation of the first housing 10 and the second housing 30, the first fixing frame 31 rotates relative to the main shaft 1, the second transmission arm 42 slides relative to the first fixing frame 31, the second fixing frame 32 rotates relative to the main shaft 1, the first transmission arm 41 rotates relative to the main shaft 1, and the first transmission arm 41 slides relative to the second fixing frame 32, so that the folding device 100 can be freely switched between the unfolded state and the closed state. The first housing 10 and the second housing 30 can be relatively unfolded to a flat state, so that the flexible display screen 200 is in a flat state to realize large-screen display, and the first housing 10 and the second housing 30 can also be relatively folded to a closed state, so that the electronic device 1000 is convenient to store and carry. In addition, when the first housing 10 and the second housing 30 are folded relatively to the closed state by the rotating mechanism 20, they can be substantially completely folded, and no gap or small gap is formed between them, so that the appearance of the folding device 100 is relatively complete, and the appearance self-shielding is realized, and the appearance of the electronic device 1000 using the folding device 100 is relatively complete, which is beneficial to improving the reliability of the product and the user experience.

Referring to fig. 13 and fig. 34, in the process of the relative rotation between the first housing 10 and the second housing 30, the rotating end 412 of the first transmission arm 41 is connected to the second end 512 of the first transmission arm 51 through the first connecting member 61, the rotating end 412 of the first transmission arm 41 is connected to the first end 611 of the first connecting member 61 through the rotating shaft 6111, and the rotating end 412 of the first transmission arm 41 can rotate around the first end 611 of the first connecting member 61; the second end 512 of the first rotating arm 51 is rotatably connected to the second end 612 of the first connecting member 61 through a rotating shaft 6121, and the second end 512 of the first rotating arm 51 can rotate around the second end 612 of the first connecting member 61. Therefore, the first rotation arm 41, the first connector 61, and the first rotation arm 51 form an interlocking structure. Similarly, as shown in fig. 41, the second rotating arm 42, the second connecting member 62 and the second rotating arm 52 form a linkage structure.

Referring to fig. 12 and fig. 41, in the process of relative rotation between the first housing 10 and the second housing 30, since the first housing 10 and the first fixing frame 31 move synchronously, the second housing 30 and the second fixing frame 32 move synchronously, that is, the first fixing frame 31 and the second fixing frame 32 rotate relatively. Since the sliding end 412 of the second transmission arm 42 is slidably connected to the first fixing frame 31, when the first fixing frame 31 rotates, the sliding end 421 of the second transmission arm 42 slides in the second sliding slot 312, and the rotating end 422 of the second transmission arm 42 rotates relative to the main shaft 1. Referring to fig. 34 and 35, the first fixing frame 31 is rotatably connected to the first rotating arm 51, when the first fixing frame 31 rotates, the first rotating arm 51 rotates, and due to the limitation of the main outer shaft 14 on the first rotating arm 51 and the limitation of the limiting groove 156 on the movement track of the rotating shaft 6121, the first rotating arm 51 can only move in the main shaft 1 in a predetermined track. The first rotating arm 51 is linked with the first transmission arm 41 through a first connecting piece 61, the second rotating arm 52 is linked with the second transmission arm 42 through a second connecting piece 62, and the two linking structures are symmetrical to each other. Therefore, the rotation angles of the rotation end 412 of the first transmission arm 41 and the rotation end 422 of the second transmission arm 42 are equal and opposite. The first casing 10 and the rotating end 422 of the second transmission arm 42 rotate synchronously, and the second casing 30 and the rotating end 412 of the first transmission arm 41 rotate synchronously, so that the synchronism and consistency of the rotating actions of the first casing 10 and the second casing 30 are ensured.

As shown in fig. 34 to 43, in the process that the first casing 10 and the second casing 30 are relatively unfolded to the flat state, the first transmission arm 41 rotates relative to the main shaft 1, the first transmission arm 51 is linked with the first transmission arm 41 through the first connecting member 61, and the first fixing frame 31 and the first casing 10 are gradually away from the main shaft 1; the second transmission arm 42 rotates relative to the main shaft 1, the second rotating arm 52 is linked with the second transmission arm 42 through the second connecting member 62, and the second fixing frame 32 and the second housing 30 are gradually away from the main shaft 1. In the process that the first housing 10 and the second housing 30 are folded relatively to the closed state, the first transmission arm 41 rotates relative to the main shaft 1, the first transmission arm 51 is linked with the first transmission arm 41 through the first connecting piece 61, and the first fixing frame 31 and the first housing 10 gradually approach the main shaft 1; the second transmission arm 42 rotates relative to the main shaft 1, the second rotating arm 52 is linked with the second transmission arm 42 through the second connecting member 62, and the second fixing frame 32 and the second housing 30 gradually approach the main shaft 1. Therefore, the turning mechanism 20 can move the first casing 10 in the direction away from the spindle 1 and move the second casing 30 in the direction away from the spindle 1 while the first casing 10 and the second casing 30 are relatively expanded, and move the first casing 10 in the direction toward the spindle 1 and move the second casing 30 in the direction toward the spindle 1 while the first casing 10 and the second casing 30 are relatively folded. That is, the rotating mechanism 20 can realize the pulling motion of the housing during the process of changing the folding device 100 from the flat state to the closed state and the pushing motion of the housing during the process of changing the folding device 100 from the closed state to the flat state, so that the folding device 100 can realize the deformation motion with the flexible display screen 200 as a neutral surface during the process of unfolding or folding, thereby reducing the risk of pulling or squeezing the flexible display screen 200, keeping the flexible display screen 200 at a constant length, protecting the flexible display screen 200, improving the reliability of the flexible display screen 200, and enabling the flexible display screen 200 and the electronic device 1000 to have a longer service life.

As shown in fig. 34 and 41, when the first casing 10 and the second casing 30 are relatively unfolded to the flat state, the first support plate 21 is flush with the second support plate 22, the first support plate 21 is erected between the first fixing frame 31 and the spindle 1, the second support plate 22 is erected between the second fixing frame 32 and the spindle 1, and the first support plate 21, the spindle 1 and the second support plate 22 can together form a complete plane support for the bending portion 2002 of the flexible display 200. As shown in fig. 40 and 43, when the first casing 10 and the second casing 30 are folded relatively to a closed state, the first support plate 21 is stacked on a side of the first fixing frame 31 away from the second fixing frame 32, the second support plate 22 is stacked on a side of the second fixing frame 32 away from the first fixing frame 31, and the first support plate 21 and the second support plate 22 can slide and fold relative to the first casing 10 and the second casing 30, respectively, so that the main shaft 1 is exposed to form a complete support for the bending portion 2002 of the flexible display 200. In other words, when the folding device 100 is in the flat state or the closed state, the rotating mechanism 20 can fully support the bending portion 2002 of the flexible display screen 200, thereby being beneficial to protecting the flexible display screen 200 and improving the user experience.

As shown in fig. 34 and 41, when the first casing 10 and the second casing 30 are relatively unfolded to the flat state, the first shielding plate 23 is flush with the second shielding plate 24, the first shielding plate 23 is disposed between the first fixing frame 31 and the spindle 1 to shield a gap between the first fixing frame 31 and the spindle 1, and the second shielding plate 24 is disposed between the second fixing frame 32 and the spindle 1 to shield a gap between the second fixing frame 32 and the spindle 1. Therefore, the folding device 100 can achieve self-shielding, which is beneficial to improving the integrity of the appearance, and can also reduce the risk of external dust, impurities and the like entering the rotating mechanism 20, so as to ensure the reliability of the folding device 100. As shown in fig. 40 and 43, when the first housing 10 and the second housing 30 are folded relatively to the closed state, the first shielding plate 23 can be folded between the first fixing frame 31 and the first housing 10, and the second shielding plate 24 can be folded between the second fixing frame 32 and the second housing 30, so as to avoid the first shielding plate and the second shielding plate, and the folding device 100 can be smoothly folded to the closed state, and the mechanism reliability is high.

Further, referring to fig. 28 in combination, since the first support plate 21 and the first shielding plate 23 are fixed to the sliding end 411 of the first transmission arm 41, the first support plate 21 and the first shielding plate 23 move following the sliding end 411 of the first transmission arm 41; the second support plate 22 and the second shielding plate 24 are fixed to the sliding end 421 of the second transmission arm 42, and the second support plate 22 and the second shielding plate 24 follow the sliding end 421 of the second transmission arm 42. Therefore, during the process of converting the folding device 100 from the closed state to the unfolded state and from the unfolded state to the closed state, the first support plate 21 and the second support plate 22 are gradually close to the main shaft 1 or away from the main shaft 1, so that the flexible display screen 200 can be completely supported in various forms by the folding device 100, and the reliability and the service life of the flexible display screen 200 and the electronic device 1000 are improved. In the process of converting the folding device 100 from the closed state to the flat state and in the process of converting the flat state to the closed state, the first shielding plate 23 and the second shielding plate 24 are gradually close to the main shaft 1 or away from the main shaft 1, so that the folding device 100 can perform self-shielding in various forms according to the form of the rotating mechanism 20, and the mechanism reliability is high.

Since the first support plate 21 and the first shield plate 23 are both fixed to the sliding end 411 of the first transmission arm 41, and the second support plate 22 and the second shield plate 24 are both fixed to the sliding end 421 of the second transmission arm 42, the first transmission arm 41 and the second transmission arm 42 control the rotation operation of the first casing 10 and the second casing 30, and also control the extension and contraction operation of the first support plate 21, the first shield plate 23, the second support plate 22, and the second shield plate 24, so that the integration level of the rotation mechanism 20 is high, the overall connection relationship is simple, and the mechanism reliability is high.

In some embodiments, as shown in fig. 12 to 14, the rotating mechanism 20 may further include a first limiting member 81. The first limiting member 81 is mounted on the sliding end 411 of the first transmission arm 41, and the first limiting member 81 is engaged with the second fixing frame 32. In this embodiment, the first limiting member 81 is used to limit the relative position relationship between the first transmission arm 41 and the second fixing frame 32, so that the first transmission arm 41 and the second fixing frame 32 can maintain a preset relative position relationship when not subjected to a large external force, the rotating mechanism 20 can stop at a preset angle, and the rotating device can maintain a flat state or a closed state, so as to improve the user experience of the folding device 100 and the electronic device 1000.

Fig. 44 is an exploded structural schematic diagram of the first limiting member 81 shown in fig. 12 to 14.

As shown in fig. 44, in some embodiments, the first limiting member 81 includes a second bracket 811 and a third elastic member 812. The second bracket 811 has a rigid structure and is not easily deformed by an external force. The second holder 811 includes a control portion 8111 and a holding portion 8112. The supporting part 8112 is used for supporting an external structural component so as to limit the structural component. The control portion 8111 is used for controlling the position of the holding portion 8112. Illustratively, the control portion 8111 includes a substrate 8113 and a plurality of guide pillars 8114, and the plurality of guide pillars 8114 are fixed to one side of the substrate 8113 with a space therebetween. The abutting portion 8112 is fixed to the other side of the substrate 8113. The third elastic member 812 is an elastic structure and is easily deformed by an external force. One end of the third elastic member 812 is attached to the control portion 8111 of the second bracket 811. Illustratively, the third elastic element 812 may include a plurality of springs 8121, and the plurality of springs 8121 are sleeved on the plurality of guide posts 8114 in a one-to-one correspondence.

As shown in fig. 13, the sliding end 411 of the first transmission arm 41 has a second mounting groove 4112, and the first limiting member 81 is mounted in the second mounting groove 4112. The other end of the third elastic member 812 (i.e., the end away from the control portion 8111) abuts against the groove wall of the second mounting groove 4112, and the third elastic member 812 is in a compressed state. The supporting portion 8112 of the second bracket 811 partially extends out of the second mounting groove 4112 and is connected to the second fixing frame 32.

As shown in fig. 44, in some embodiments, the first limiting member 81 may further include a first buffering member 813, and the first buffering member 813 is mounted on the abutting portion 8112 of the second bracket 811. The first cushion member 813 may be made of a material with low rigidity (e.g., rubber), and when an external force is applied, the first cushion member 813 may absorb an impact force by deformation to achieve cushioning. The first limiting member 81 is provided with the first buffering member 813, so that stress between the abutting portion 8112 and the structural member (i.e., the second fixing frame 32) can be buffered, and reliability of the limiting structure can be improved.

Referring to fig. 33, 36 and 39, the second fixing frame 32 further includes a first concave area 325, a second concave area 326 (a first concave portion) and a first horizontal area 327 (a first convex portion), and the first concave area 325, the second concave area 326 and the first horizontal area 327 are all connected to the first sliding chute 322. The distance between the first recessed area 325 and the end a of the first sliding slot 322 in the first direction P1 is smaller than the distance between the second recessed area 326 and the end a of the first sliding slot 322 in the first direction P1. First horizontal region 327 is located between first recessed region 325 and second recessed region 326.

As shown in fig. 33, when the first housing 10 and the second housing 30 are relatively unfolded to the flat state, the supporting portion 8112 of the first limiting member 81 is partially clamped into the first concave area 325. As shown in fig. 36, when the first casing 10 and the second casing 30 rotate (unfold or fold) relatively to an intermediate state, the abutting portion 8112 of the first limiting member 81 gradually moves to the first horizontal area 327. As shown in fig. 39, when the first housing 10 and the second housing 30 are folded to the closed state, the abutting portion 8112 of the first limiting member 81 is partially clamped into the second recessed area 326.

As shown in fig. 33, when the electronic apparatus 1000 is folded, in a process that the abutting portion 8112 of the first limiting member 81 moves from the first concave region 325 to the first horizontal region 327, an elastic deformation amount of the third elastic member 812 of the first limiting member 81 gradually increases. Since the first connection surface 3251 of the first concave region 325 and the first horizontal region 327 forms a certain angle with the length direction of the spindle 1, two component forces are generated on the first connection surface 3251, respectively, and the force F received by the first connection surface 3251₃. Wherein, F_3xA component force perpendicular to the length direction of the main shaft 1, F_3yIs a component parallel to the length direction of the main shaft 1. In the process that the first limiting element 81 moves from the first concave region 325 to the first horizontal region 327, i.e. when the first housing 10 and the second housing 30 are folded relatively, the component force F perpendicular to the length direction of the main shaft 1 and away from the main shaft 1 is_3xA torque is generated to hinder the rotation of the second housing 30, thereby providing a feeling during the folding of the electronic apparatus 1000.

As shown in fig. 39, when the electronic apparatus 1000 is folded, the elastic deformation of the third elastic member 812 of the first limiting member 81 is gradually reduced in the process that the abutting portion 8112 of the first limiting member 81 moves from the first horizontal region 327 to the second concave region 326. Since the second connection surface 3261 of the second recessed area 326 and the first horizontal area 327 forms a certain included angle with the length direction of the spindle 1, two component forces are generated on the second connection surface 3261, respectively, and the force F received by the second connection surface 3261₄. Wherein, F_4xA component force perpendicular to the length direction of the main shaft 1, F_4yIs a component parallel to the length direction of the main shaft 1. In the process that the first limiting element 81 moves from the first horizontal area 327 to the second concave area 326, that is, when the first housing 10 and the second housing 30 continue to be folded relatively, the component force F perpendicular to the length direction of the main shaft 1 and pointing to the direction of the main shaft 1_4xA torque may be provided to assist the rotation of the second housing 30, pushing the second housing 30 to rotate.

As shown in fig. 39, when the electronic device 1000 is unfolded, the first limiting member 81 moves from the second recessed area 326 to the first horizontal area 327 while the supporting portion 8112 moves to the first horizontal area 327The amount of elastic deformation of the third elastic member 812 of the position member 81 gradually increases. At this time, the component force F perpendicular to the length direction of the spindle assembly and pointing to the direction of the spindle 1_4xA torque is generated to hinder the rotation of the second housing 30, thereby providing a feeling during the folding of the electronic apparatus 1000. As shown in fig. 33, when the electronic device 1000 is continuously unfolded, the deformation amount of the third elastic member 812 of the first limiting member 81 gradually decreases in the process that the abutting portion 8112 of the first limiting member 81 moves from the first horizontal region 327 to the first concave region 325. At this time, the component force F perpendicular to the longitudinal direction of the main shaft 1 and away from the main shaft 1_3xA torque may be provided to assist the rotation of the second housing 30, pushing the second housing 30 to rotate.

For convenience of understanding the stress applied during the relative rotation of the first housing 10 and the second housing 30, the stress applied to the first connection surface 3251 during the movement of the supporting portion 8112 of the first limiting member 81 from the first concave region 325 to the first horizontal region 327 is taken as an example for description.

Fig. 45 is a schematic diagram of the force applied during the folding process of the electronic device 1000. The circle center C is a rotation center of the electronic device 1000, which is a circle center of the flexible display screen 200 during rotation of the neutral plane. When the electronic apparatus 1000 is folded, in the process that the first position-limiting member 81 moves from the first recessed region 325 to the first horizontal region 327, the external force F of the folded electronic apparatus 1000 generates a component force F_b，F_bTangent to a circle having C as its center, F_bA torque is generated to push the first housing 10 and the second housing 30 to rotate relatively. The first connection surface 3251 receives a component force F perpendicular to the length direction of the main shaft 1 and away from the main shaft 1_3xGenerating a component force F_a，F_aAlso tangent to a circle having C as its centre, F_aA torque that hinders the relative rotation of the first casing 10 and the second casing 30 is generated. Therefore, in the process that the first housing 10 and the second housing 30 rotate relatively and the first limiting member 81 moves from the first concave region 325 to the first horizontal region 327, the component force F perpendicular to the length direction of the main shaft 1 and away from the main shaft 1 is_3xA torque is generated that resists relative rotation of the housings.

Based on the same or similar principle as above, during the folding or unfolding process of the electronic device 1000, the component force perpendicular to the length direction of the main shaft 1 may generate a torque to assist or hinder the relative rotation of the housing, which is not described in detail herein.

Because the third elastic member 812 of the first limiting member 81 can deform under the action of an external force, the first limiting member 81 can move smoothly among the first recessed area 325, the first horizontal area 327 and the second recessed area 326 relative to the second fixing frame 32, thereby improving the limiting reliability between the first transmission arm 41 and the second fixing frame 32.

In other embodiments, the second fastening frame 32 may include only the first recessed area 325, or only the second recessed area 326. The design of the position of the first recessed area 325 and/or the second recessed area 326 can also have other forms, which are not strictly limited in this application.

In other embodiments, the portion of the second fixing frame 32 that cooperates with the first limiting element 81 may be an elastic structure, or provided with an elastic bump, for the same or similar reasons as above, a force perpendicular to the length direction of the main shaft 1, which is applied to the second fixing frame 32 during the folding or unfolding process of the electronic device 1000, may provide a hand feeling during the folding process of the electronic device 1000.

In some embodiments, as shown in fig. 12 to 14, the rotating mechanism 20 may further include a second limiting member 82. The second limiting member 82 is mounted on the sliding end 421 of the second transmission arm 42, and the second limiting member 82 is clamped with the first fixing frame 31. In this embodiment, the second limiting member 82 is used to limit the relative position relationship between the second transmission arm 42 and the first fixing frame 31, so that the second transmission arm 42 and the first fixing frame 31 can keep a preset relative position relationship when not subjected to a large external force, the rotating mechanism 20 can stop at a preset angle, and the rotating device can keep a flat state or a closed state, so as to improve the user experience of the folding device 100 and the electronic device 1000.

Illustratively, the structure of the second limiting member 82 is the same as that of the first limiting member 81, so as to simplify the material type of the rotating mechanism 20 and reduce the design difficulty and cost of the rotating mechanism 20. The specific structure of the second limiting member 82 is not described in detail in this embodiment of the application. In other embodiments, the structure of the second limiting member 82 may also be different from the structure of the first limiting member 81.

It is understood that the above embodiment illustrates one implementation structure of the limiting element by way of example, and the limiting element in the embodiment of the present application may also adopt other elastic structures, for example, an elastic rubber block, and the present application is not limited thereto.

Exemplarily, as shown in fig. 13 and 14, the first fixing frame 31 further includes a third recessed area 315, a fourth recessed area 316 (a second concave portion), and a second horizontal area 317 (a second convex portion), and the third recessed area 315, the fourth recessed area 316, and the second horizontal area 317 are all communicated with the second chute 312. The distance between the third recessed area 315 and the a 'end of the second sliding slot 312 in the first direction P1 is smaller than the distance between the fourth recessed area 316 and the a' end of the second sliding slot 312 in the first direction P1. The second horizontal region 317 is located between the third recessed region 315 and the fourth recessed region 316. When the first casing 10 and the second casing 30 are relatively unfolded to the flat state, the second limiting member 82 is partially inserted into the third recessed area 315; when the first housing 10 and the second housing rotate (unfold or fold) relatively to an intermediate state, the second position-limiting member 82 gradually moves to the second horizontal area 317; when the first casing 10 and the second casing 30 are relatively folded to the closed state, the second limiting member 82 is partially inserted into the fourth recessed area 316.

For the same or similar reasons as described above, the third recessed area 315 and the fourth recessed area 316 may provide a torque that hinders or assists the rotation of the first housing 10 when the electronic device 1000 is unfolded or folded.

In other embodiments, the first fixing frame 31 may include only the third recessed area 315, or only the fourth recessed area 316. The position of the third recessed area 315 and/or the fourth recessed area 316 may be designed in other forms, which is not strictly limited in this application.

In other embodiments, the matching portion of the first fixing frame 31 and the second limiting member 82 may be an elastic structure, or provided with an elastic bump, and a force applied to the first fixing frame 31 perpendicular to the length direction of the main shaft 1 during the folding or unfolding process of the electronic device 1000 may provide a hand feeling during the folding process of the electronic device 1000.

Fig. 46 is a schematic view showing the fitting relationship of the synchronous damper 7 shown in fig. 14 with the main shaft 1.

Referring to fig. 14 and 46, in some embodiments, the rotating end 712 of the first synchronizing swing arm 71, the rotating end 722 of the second synchronizing swing arm 72 and the gear set 73 are engaged with the arc-shaped groove 142b of the main shaft 14 and the arc-shaped protrusion 153b of the main shaft 15, so as to achieve the rotational connection with the main shaft 1. The fourth resilient member 76 is engaged with the arcuate recess 142c of the main outer shaft 14 and the arcuate projection 153c of the main inner shaft 15.

Referring to fig. 47 to 49, fig. 47 is a schematic cross-sectional view of the folding device 100 shown in fig. 2 in a flat state corresponding to the position of the synchronization element 70 (i.e., the cross-sectional line C-C shown in fig. 12), fig. 48 is a schematic cross-sectional view of the folding device 100 shown in fig. 2 in an intermediate state corresponding to the position of the synchronization element 70 (i.e., the cross-sectional line C-C shown in fig. 12), and fig. 49 is a schematic cross-sectional view of the folding device 100 shown in fig. 2 in a closed state corresponding to the position of the synchronization element 70 (i.e., the cross-sectional line C-C shown in fig. 12). Fig. 47 to 49 illustrate the change in position of the synchronizing assembly during the transition of the folding device 100 from the unfolded state to the closed state.

As shown in fig. 47, referring to fig. 14 and 33, when the first casing 10 and the second casing 30 are unfolded to be flat, the third flange 7111 of the sliding end 711 of the first synchronization swinging arm 71 is slidably connected to the guiding space 3131 of the third sliding slot 313 of the first fixing frame 31. The third slide groove has a C end close to the main shaft 1 and a D end far from the main shaft 1, that is, the distance between the C end of the third slide groove 313 and the main shaft 1 in the first direction P1 is smaller than the distance between the D end of the third slide groove 313 and the main shaft 1 in the first direction P1. The distance between the first synchronizing swing arm 71 and the end D of the third sliding chute 313 in the first direction P1 is a seventh distance D7. Similarly, the fourth runner 323 has a C 'end near the main shaft 1 and a D' end away from the main shaft 1. The distance between the second synchronizing swing arm 72 and the end D' of the fourth link 323 and the second housing 30 in the third direction P3 is an eighth distance D8. Illustratively, the seventh distance D7 and the eighth distance D8 may be substantially equal, so as to ensure the synchronism and the consistency of the relative rotation of the first casing 10 and the second casing 30.

As shown in fig. 48, referring to fig. 14 and 36 together, in the process of folding the first casing 10 and the second casing 30 from the flat state to the intermediate state, the third flange 7111 of the sliding end 711 of the first synchronization swing arm 71 slides in the guiding space 3131 of the first fixing frame 31, that is, the first synchronization swing arm 71 slides in the third sliding slot 313, and the first synchronization swing arm 71 gradually approaches the first fixing frame 31 and the first casing 10. The fourth flange 7211 of the sliding end 721 of the second synchronizing swing arm 72 slides in the guide space 3231 of the second fixed frame 32, that is, the second synchronizing swing arm 72 slides in the fourth slide groove 323, and the second synchronizing swing arm 72 gradually approaches the second fixed frame 32 and the second housing 30. When the first casing 10 and the second casing 30 are relatively folded to the intermediate state, the distance between the first synchronization swing arm 71 and the end D of the third sliding chute 313 in the first direction P1 is a ninth distance D9, and the ninth distance D9 is smaller than the seventh distance D7; the distance between the second synchronizing swing arm 72 and the end D' of the fourth link 323 in the third direction P3 is a tenth distance D10, and the tenth distance D10 is less than the eighth distance D8. Illustratively, the ninth distance D9 and the tenth distance D10 may be approximately equal.

As shown in fig. 49, referring to fig. 14 and 39 together, in the process of relatively folding the first casing 10 and the second casing 30 from the intermediate state to the closed state, the first synchronizing swing arm 71 continues to approach the first fixing frame 31 and the first casing 10, and the second synchronizing swing arm 72 continues to approach the second fixing frame 32 and the second casing 30. When the first casing 10 and the second casing 30 are folded relatively to the closed state, the distance between the first synchronization swing arm 71 and the end D of the third sliding chute 313 in the first direction P1 is an eleventh distance D11, and the eleventh distance D11 is smaller than the ninth distance D9; the distance between the second synchronizing swing arm 72 and the end D' of the fourth sliding chute 323 in the third direction P3 is a twelfth distance D12, and the twelfth distance D12 is smaller than the tenth distance D10. Illustratively, the eleventh distance D11 and/or the twelfth distance D12 may be close to zero.

In the present embodiment, during the unfolding and folding process of the folding apparatus 100, the rotating end 712 of the first synchronizing swing arm 71 engages with the rotating end 722 of the second synchronizing swing arm 72 through the gear set 73, the rotating end 712 of the first synchronizing swing arm 71 and the rotating end 722 of the second synchronizing swing arm 72 are both rotatably connected to the main shaft 1, the sliding end 711 of the first synchronizing swing arm 71 is slidably connected to the first fixing frame 31, and the sliding end 721 of the second synchronizing swing arm 72 is slidably connected to the second fixing frame 32. Therefore, in the process of relatively unfolding or folding the first housing 10 and the second housing 30, the first synchronizing swing arm 71 and the second synchronizing swing arm 72 can control the rotation angles of the first fixing frame 31 and the second fixing frame 32 relative to the main shaft 1 to be consistent, so that the rotation actions of the first housing 10 and the second housing 30 have synchronicity and consistency, the folding action and the unfolding action of the folding device 100 have better symmetry, and the use experience of a user is improved.

Wherein, the first synchronous swing arm 71 is rotatably connected with the main shaft 1 and slidably connected with the first fixing frame 31, i.e. a connecting rod and slider structure is formed. The second synchronous swing arm 72 is rotatably connected with the main shaft 1 and slidably connected with the second fixing frame 32, i.e. a connecting rod and slider structure is formed. The synchronization and consistency of the rotational motion of the first and

second housings

10 and 30 is well controlled by the intermeshing link-slider structures of the gear sets 73.

Fig. 50 is an exploded view of the synchronous damper 7 shown in fig. 12 to 14.

In some embodiments, the damper member 7 of the rotating mechanism 20 includes a synchronizing member 70, a first link cam 74, a second link cam 75, a fourth elastic member 76, a snap ring 77, a snap spring 78, and a plurality of connecting shafts 79. Illustratively, the synchronizing assembly 70 includes a first synchronizing swing arm 71, a second synchronizing swing arm 72, and a gear set 73. The rotating end 712 of the first synchronizing swing arm 71 engages the rotating end 722 of the second synchronizing swing arm 72 through the gear set 73. The gear set 73 includes a first gear 731 and a second gear 732, and the first gear 731 and the second gear 732 are engaged with each other.

The connecting shaft 79 includes guide posts 791 and stop blocks 792. The snap ring 77, the fourth elastic member 76, the first connecting cam 74, the synchronizing assembly 70, the second connecting cam 75 and the snap spring 78 are sequentially sleeved on the guide posts 791 of the plurality of connecting shafts 79. The end of the snap ring 77 abuts against a stop 792 of the connection shaft 79. The guide posts 791 of the connecting shaft 79 include a limiting groove 7911 and the circlip 78 includes a plurality of grooves 781. The plurality of grooves 781 of the snap spring 78 snap-engage the plurality of limit grooves 7911 of the connecting shaft 79 in a one-to-one correspondence. For example, the fourth elastic member 76 may include a plurality of springs 761, and the fourth elastic member 76 may be in a compressed state to provide a pre-stress.

Illustratively, the rotating end 712 of the first synchronizing swing arm 71, the first gear 731, the second gear 732, and the rotating end 722 of the second synchronizing swing arm 72 are arranged in an arc shape. That is, the rotational axis of the rotating end 712 of the first synchronizing swing arm 71, the rotational axis of the first gear 731, the rotational axis of the second gear 732, and the rotational axis of the rotating end 722 of the second synchronizing swing arm 72 are arranged in an arc shape. In this embodiment, the synchronous damping members 7 are installed on the main shaft 1, and are arranged in an arc shape, so that the internal space of the main shaft 1 can be fully utilized, thereby facilitating the improvement of the compactness of the arrangement of the components of the electronic device 1000 and reducing the volume of the electronic device 1000.

Fig. 51 is a schematic structural view of the first link cam 74 shown in fig. 50, and fig. 52 is a schematic structural view of the first gear 731 shown in fig. 50.

As shown in fig. 51, the first link cam 74 has a first end surface 741 facing the synchronizing member 70, and the first end surface 741 includes a plurality of first concave surfaces 741a and first convex surfaces 741b disposed at intervals. As shown in fig. 52, both sides of the first gear 731, which are engaged with the first connecting cam 74 and the second connecting cam 75, include a second concave surface 731a and a second convex surface 731b which are spaced apart from each other.

Fig. 53 is a schematic view illustrating the matching relationship between the first link cam 74 and the first gear 731 when the first casing 10 and the second casing 30 are relatively unfolded to be in the flat state. As shown in fig. 50 to 53, the first concave surface 741a of the first link cam 74 abuts against the second convex surface 731b of the first gear 731, and the first convex surface 741b of the first link cam 74 abuts against the second concave surface 731a of the first gear 731. At this time, the fourth elastic member 76 is in a compressed state, and the amount of elastic deformation of the fourth elastic member 76 is the first amount of deformation.

Fig. 54 is a schematic diagram illustrating the matching relationship between the first link cam 74 and the first gear 731 when the first housing 10 and the second housing 30 start to rotate relatively. The first convex surface 741b of the first link cam 74 slides relative to the second convex surface 731b of the first gear 731, and the first convex surface 741b partially abuts against the second convex surface 731 b. At this time, the amount of elastic deformation of the fourth elastic member 76 is a second amount of deformation, which is greater than the first amount of deformation. By the second variation of the fourth elastic member 76, the first convex surface 741b pushes the second convex surface 731b, and the first convex surface 741b and the second convex surface 731b cooperate to provide a torque for resisting relative rotation of the housing, thereby improving the hand feeling of the electronic device 1000 during folding.

As shown in fig. 54, since the second convex surface 731b forms a certain included angle with the length direction of the main shaft 1, during the relative rotation of the first housing 10 and the second housing 30, the first convex surface 741b slides relative to the second convex surface 731b, the elastic force generated by the deformation of the fourth elastic element 76 is transmitted to the second convex surface 731b of the first gear 731 through the first convex surface 741b of the first integral cam 74, and the force applied to the second convex surface 731b is F₅. Wherein, F_5xA component force perpendicular to the length direction of the main shaft 1, F_5yIs a component parallel to the length direction of the main shaft 1. When the first housing 10 and the second housing 30 rotate relatively, the second convex surface 731b receives a component force F perpendicular to the longitudinal direction of the main shaft 1 and in a direction away from the main shaft 1_5xA torque is generated that resists relative rotation of the housings. The stress applied during the folding process of the electronic device 1000 may refer to fig. 45 and the corresponding description thereof, and is not described herein again.

The structure of the second conjoined cam 75 may be the same as that of the first conjoined cam 74, and the structure of the second gear 732 may be the same as that of the first gear 731, and detailed description of the structure is omitted in this embodiment. The matching relationship between the first gear 731 and the second conjoined cam 75, the matching relationship between the second gear 732 and the first conjoined cam 74 and the second conjoined cam 75, the matching relationship between the rotating end 712 of the first synchronizing swing arm 71 and the first conjoined cam 74 and the second conjoined cam 75, and the matching relationship between the rotating end 722 of the second synchronizing swing arm 72 and the first conjoined cam 74 and the second conjoined cam 75 are the same as or similar to the matching relationship between the first gear 731 and the first conjoined cam 74, and the specific structure can refer to the above description, and is not described herein again in detail.

As can be seen from the above description, the engagement between the convex surfaces and the concave surfaces can provide a torque for resisting the relative rotation between the first casing 10 and the second casing 30, thereby improving the hand feeling of the electronic device 1000 during the folding process.

FIG. 55 is the synchronous damping of FIG. 50Part of the structure of the piece 7 is schematically shown. Referring to fig. 14 and 54, when the first convex surface 741b of the first link cam 74 slides relative to the second convex surface 731b of the first gear 731, the convex surfaces of the first link cam 74 and the first gear 731 are pressed against each other to generate the first displacement M. Correspondingly, the second conjoined cam 75 will also slide relative to the first gear 731, and the convex surface between the second conjoined cam 75 and the first gear 731 is pressed to generate the second displacement N accordingly. Illustratively, the second displacement amount N may be equal to the first displacement amount M. As shown in fig. 55, the distance between the circlip 78 and the circlip 77 is constant, and is a fixed length S. Therefore, the first displacement amount M generated by the convex extrusion of the first gear 731 and the first connecting cam 74 and the second displacement amount N generated by the convex extrusion of the first gear 731 and the second connecting cam 75 are converted into the elastic deformation amount of the fourth elastic element 76. By adopting the above-described structure, the amount of elastic deformation of the fourth elastic member 76 can be increased so that the force F received by the first gear 731 when the first convex surface 741b and the second convex surface 731b are pressed against each other₅Larger, F₅Component force F perpendicular to the length direction of the main shaft 1_5xAnd correspondingly larger. Therefore, when the first casing 10 and the second casing 30 rotate relatively, a larger torque can be generated to hinder the relative rotation of the casings, and the hand feeling of the electronic device 1000 is further improved.

Similarly, when the concave-convex surfaces of the first linking cam 74 and the second linking cam 75 are matched with the concave-convex surfaces of the first gear 731, the second gear 732, the rotating end 712 of the first synchronizing swing arm 71 and the rotating end 722 of the second synchronizing swing arm 72, a larger torque can be provided, and the hand feeling of the electronic device 1000 in the folding and unfolding processes can be improved.

In the embodiment of the present application, when the electronic apparatus 1000 is unfolded from the closed state to the unfolded state, the force in the first direction applied to the first non-bending portion 2001 of the flexible display 200 is greater than the force in the first direction applied to the closed state, and the force in the third direction applied to the second non-bending portion 2003 is greater than the force in the third direction applied to the closed state. Therefore, the phenomenon of layered dislocation of the flexible display screen 200 when the electronic device is unfolded from the closed state to the flat state can be reduced, and the crease recovery of the flexible display screen 200 is accelerated, so that the flat effect of the flexible display screen is improved.

The above description is only an example of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application are included in the scope of the present application; the embodiments and features of the embodiments of the present application may be combined with each other without conflict. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An electronic device, comprising a flexible display screen (200), a first housing (10), a second housing (30), a first elastic component, and a shaft;

the flexible display screen comprises a first non-bending part (2001), a bending part (2002) and a second non-bending part (2003) which are sequentially arranged;

the first shell (10) and the second shell (30) are respectively positioned at two sides of the shaft;

the first shell (10) is fixedly connected with the first non-bending part (2001), and the second shell (30) is fixedly connected with the second non-bending part (2003);

the first elastic component is positioned between the shaft and the first shell (10), the first elastic component is rotatably connected with the shaft, and the first elastic component is fixedly connected with the first shell (10);

a first structural member (9113) in abutment with a second structural member (511), wherein the first structural member (9113) is part of the first elastic component and the second structural member (511) is part of the shaft;

the compression amount of the first elastic component in a first direction generates elastic force, and at least part of the elastic force is transmitted to the bent part (2002) through the first shell (10) and the first non-bent part (2001), wherein the first direction is perpendicular to the length extension direction of the shaft and is parallel to the first shell (10);

the electronic device is in a flattened state, a first position of the first structural member (9113) is abutted with a first position of the second structural member (511), and the compression amount of the first elastic component in the first direction is a first compression amount;

the first shell (10) and the first elastic component rotate relative to the shaft, the second shell (30) rotates relative to the shaft, and the electronic device is converted from the flat state to the folded state;

the electronic device is in the folded state, a second position of the first structural member (9113) is abutted with a second position of the second structural member (511), and the compression amount of the first elastic component in the first direction is a second compression amount which is smaller than the first compression amount;

wherein a first location of the first structure (9113) is different from a second location of the first structure (9113), and/or a first location of the second structure (511) is different from a second location of the second structure (511).

2. The electronic device according to claim 1, wherein the electronic device is in the flat state, and a force transmitted to the bent portion (2002) through the first case (10) and the first non-bent portion (2001) is a first force;

the electronic device is in the folded state, and a force transmitted to the bent portion (2002) through the first housing (10) and the first non-bent portion (2001) is a second force, which is smaller than the first force.

3. The electronic device of claim 1, wherein the shaft is rotationally coupled to the first resilient component via a first rotational axis (5112);

the electronic equipment is in the flattening state, the distance between the axis of the first rotating shaft (5112) and the first position of the shaft is a first distance, and the projection length of the first distance on a first plane is a first projection length;

the electronic equipment is in the folded state, the distance between the axis of the first rotating shaft (5112) and the second position of the shaft is a second distance, the projection length of the second distance on the first plane is a second projection length, and the second projection length is smaller than the first projection length;

the first plane is a plane where a surface where the first shell (10) and the first non-bending portion (2001) are fixedly connected is located.

4. The electronic device according to claim 1, wherein the first elastic member is provided with a connection hole (3111);

the axle with first elastic component passes through first pivot (5112) and rotates the connection, includes:

the first rotating shaft (5112) is arranged in the connecting hole (3111) in a penetrating mode.

5. The electronic device according to claim 4, wherein the connection hole (3111) comprises a first sidewall and a second sidewall;

the distance between the axis of the first rotating shaft (5112) and the first side wall is a first distance, the distance between the axis of the first rotating shaft (5112) and the second side wall is a second distance, and the first distance is smaller than the second distance;

in response to a third force acting on the first elastic assembly, the connecting hole moves relative to the first rotating shaft (5112), the distance between the axis of the first rotating shaft (5112) and the first side wall is a third distance, the distance between the axis of the first rotating shaft (5112) and the second side wall is a fourth distance, and the third distance is greater than the fourth distance;

the third force direction is a direction in which the second side wall faces the first side wall, a distance between the first side wall and the first housing (10) is a fifth distance, a distance between the second side wall and the first housing (10) is a sixth distance, and the fifth distance is smaller than the sixth distance.

6. The electronic device according to claim 4 or 5, wherein the first cross section of the connection hole (3111) comprises at least one or more of a shape of a waist circle, an ellipse, a circle, and a rectangle, wherein the first cross section is perpendicular to a length extending direction of the first rotary shaft (5112).

7. An electronic device according to any one of claims 1 to 3, characterized in that said first elastic component comprises a first mount (31);

at least one part of the first fixing frame (31) is fixedly connected with the first shell (10).

8. The electronic device of claim 7, wherein the first elastic assembly further comprises a first elastic member (912) and a first bracket (911);

the first elastic piece (912) and the first bracket (911) are arranged on the first fixing frame (31);

at least one part of the first elastic element (912) is arranged between the first bracket (911) and the first fixing frame (31);

the first bracket (911) is abutted against the second structural part (511), and the first elastic part (912) is abutted against the first shell (10) through the first fixing frame (31).

9. The electronic device according to claim 8, wherein the first holder (31) is provided with a first mounting groove (319), and the first bracket (911) is provided with a flange (9112);

the first bracket (911) is slidably coupled to the first mounting groove (319) through the flange (9112).

10. The electronic device of claim 1, further comprising a second resilient component;

the shaft includes a first rotating member and a second rotating member;

the first elastic component comprises a first fixing frame (31), and the second elastic component comprises a second fixing frame (32);

the first rotating member comprises a first connecting component and a first rotating arm (51);

the second rotating member includes a second connecting assembly and a second rotating arm (52);

the first connecting assembly comprises a sliding end and a rotating end, the sliding end of the first connecting assembly is connected with the second fixing frame (32) in a sliding mode, and the rotating end of the first connecting assembly is connected with the first end (511) of the first rotating arm (51) in a rotating mode;

the second end (512) of the first rotating arm (51) is rotatably connected with the first fixing frame (31) through a first rotating shaft (5112);

the second connecting assembly comprises a sliding end and a rotating end, the sliding end of the second connecting assembly is connected with the first fixing frame (31) in a sliding mode, the rotating end of the second connecting assembly is connected with the first end (521) of the second rotating arm (52) in a rotating mode, and the second end (522) of the second rotating arm (52) is connected with the second fixing frame (32) in a rotating mode.

11. The electronic device according to claim 10, wherein the second elastic component is located between the shaft and the second housing (30), the second elastic component being rotatably connected with the shaft, the second elastic component being fixedly connected with the second housing (30);

a third structural member abutting a fourth structural member, wherein the third structural member is part of the second spring assembly and the fourth structural member is part of the shaft;

the compression amount of the second elastic component in a second direction generates elastic force, and at least part of the elastic force is transmitted to the bent part (2002) through the second shell (30) and the second non-bent part (2003), wherein the second direction is perpendicular to the length extension direction of the shaft, and is parallel to the second shell (30);

the electronic equipment is in the flattening state, a first position of the third structural member is abutted with a first position of the fourth structural member, and the compression amount of the second elastic assembly in the second direction is a third compression amount;

when the electronic device is in the folded state, a second position of the third structural member abuts against a second position of the fourth structural member, and a compression amount of the second elastic assembly in the second direction is a fourth compression amount which is smaller than the third compression amount;

wherein the first location of the third structural member is different from the second location of the third structural member, and/or the first location of the fourth structural member is different from the second location of the fourth structural member.

12. The electronic device according to claim 10 or 11, characterized in that the shaft further comprises a main shaft (1);

the first connection assembly comprises a first transmission arm (41) and a first connection member (61);

the second connection assembly includes a second drive arm (42) and a second link (62);

the first connection assembly comprises a sliding end and a rotating end, the sliding end of the first connection assembly is slidably connected with the second fixing frame (32), and the rotating end of the first connection assembly is rotatably connected with a first end (511) of the first rotating arm (51), and comprises:

the first transmission arm (41) comprises a sliding end (411) and a rotating end (412), the sliding end (411) of the first transmission arm (41) is connected with the second fixing frame (32) in a sliding mode, the rotating end (412) of the first transmission arm (41) is connected with the spindle (1) in a rotating mode, the rotating end (412) of the first transmission arm (41) is connected with the first connecting piece (61) in a rotating mode, and the first connecting piece (61) is connected with the first end (511) of the first rotating arm (51) in a rotating mode;

the second coupling assembling includes slip end and rotation end, the slip end sliding connection of second coupling assembling first mount (31), the rotation end rotation of second coupling assembling connects first end (521) of second rotor arm (52), includes:

the second transmission arm (42) comprises a sliding end (421) and a rotating end (422), the sliding end (421) of the second transmission arm (42) is connected with the first fixing frame (31) in a sliding mode, the rotating end (422) of the second transmission arm (42) is connected with the spindle (1) in a rotating mode, the rotating end (422) of the second transmission arm (42) is connected with the second connecting piece (62) in a rotating mode, and the second connecting piece (62) is connected with the first end (521) of the second rotating arm (52) in a rotating mode.

13. The electronic device of claim 12,

the main shaft (1) comprises an inner shaft (15) and an outer shaft (14), and the outer shaft (14) is fixedly connected with the inner shaft (15);

the inner shaft (15) comprises a first arc-shaped convex block (153a) and a second arc-shaped convex block, the outer shaft (14) comprises a first arc-shaped groove (142a) and a second arc-shaped groove, the rotating end (412) of the first transmission arm (41) is arc-shaped and is rotatably connected with the first arc-shaped convex block (153a) and the first arc-shaped groove (142a), and the rotating end (422) of the second transmission arm (42) is arc-shaped and is rotatably connected with the second arc-shaped convex block and the second arc-shaped groove.

14. The electronic device according to claim 13, wherein the first rotating arm (51) is connected to the first connecting member (61) through a second rotating shaft (6121), the inner shaft (15) and the outer shaft (14) are enclosed to form an arc-shaped slot (156), and the second rotating shaft (6121) is in sliding fit with the arc-shaped slot (156).

15. The electronic device of claim 10, wherein the second mount (32) comprises a first runner (322), and the first mount (31) comprises a second runner (312);

the sliding end (411) of the first transmission arm (41) is slidably connected with the second fixing frame (32), and comprises:

the sliding end (411) of the first transmission arm (41) is in sliding connection with the first sliding chute (322);

in the process of converting the electronic equipment from the flat state to the folded state, the sliding end (411) of the first transmission arm (41) slides relative to the first sliding chute (322);

the sliding end (421) of the second transmission arm (42) is connected with the first fixing frame (31) in a sliding manner, and comprises:

the sliding end (421) of the second transmission arm (42) is in sliding connection with the second sliding groove (312);

in the process of converting the electronic equipment from the flat state to the folded state, the sliding end (421) of the second transmission arm (42) slides relative to the second sliding groove (312).

16. The electronic device according to claim 15, wherein the first transmission arm (41) further comprises a first stop (81), and the second transmission arm (42) further comprises a second stop (82);

the first limiting piece (81) is arranged at the sliding end (411) of the first transmission arm (41);

the second limiting piece (82) is arranged at a sliding end (421) of the second transmission arm (42);

the side wall of the first sliding chute (322) is provided with a first convex part and a first concave part at intervals;

the side wall of the second sliding chute (312) is provided with a second convex part and a second concave part at intervals;

the first limiting part (81) comprises a second elastic part, and the second limiting part (82) comprises a third elastic part;

the sliding end (411) of the first transmission arm (41) slides to a first position relative to the first sliding groove (322), the first limiting piece is matched with the first convex part, and the compression amount of the second elastic piece is a fifth compression amount;

the sliding end (411) of the first transmission arm (41) slides to a second position relative to the first sliding groove (322), the first limiting piece is matched with the first concave part, the compression amount of the second elastic piece is a sixth compression amount, and the fifth compression amount is larger than the sixth compression amount;

the sliding end (421) of the second transmission arm (42) slides to a third position relative to the second sliding groove (312), the second limiting piece is matched with the second convex part, and the compression amount of the third elastic piece is a seventh compression amount;

the sliding end (421) of the second transmission arm (42) slides to a fourth position relative to the second sliding groove (312), the second limiting member is matched with the second concave portion, and the compression amount of the third elastic member is an eighth compression amount, wherein the seventh compression amount is greater than the eighth compression amount.

17. The electronic device according to claim 15, wherein the first transmission arm (41) further comprises a first stop (81), and the second transmission arm (42) further comprises a second stop (82);

the first convex part comprises a second elastic piece; the second protrusion comprises a third elastic member;

18. The electronic device of claim 10, further comprising a synchronization component (70);

the synchronizing assembly (70) comprises a first synchronizing swing arm (71), a second synchronizing swing arm (72), a first gear (731) and a second gear (732);

the first gear (731) is arranged on the main shaft (1), and the first gear (731) is rotationally connected with the main shaft (1); the second gear (732) is arranged on the main shaft (1), and the second gear (732) is rotationally connected with the main shaft (1); the first gear (731) is meshed with the second gear (732);

the first synchronous swing arm (71) comprises a sliding end (711) and a rotating end (712), the rotating end (712) of the first synchronous swing arm (71) is rotatably connected with the main shaft (1), the rotating end (712) of the first synchronous swing arm (71) is meshed with the first gear (731), and the sliding end (711) of the first synchronous swing arm (71) is slidably connected with the first fixing frame (31);

the second synchronous swing arm (72) comprises a sliding end (721) and a rotating end (722), the rotating end (722) of the second synchronous swing arm (72) is rotatably connected with the main shaft (1), the rotating end (722) of the second synchronous swing arm (72) is meshed with the second gear (732), and the sliding end (721) of the second synchronous swing arm (722) is slidably connected with the second fixing frame (32).

19. The electronic device according to any of claims 1-5, 8-11, 13-18, wherein the flexible display screen (200) comprises: the bearing plate comprises a first fixing part, a bending area and a second fixing part;

the first shell (10) is fixedly connected with the first non-bending part (2001), the second shell (30) is fixedly connected with the second non-bending part (2003), and the device comprises:

the first shell (10) is fixedly connected with the first fixing part, and the second shell (30) is fixedly connected with the second fixing part;

the bearing plate is provided with a through hole, and the through hole penetrates through the two plate surfaces of the bearing plate.

20. An electronic device, comprising a flexible display screen (200), a first housing (10), a second housing (30), a first elastic component, and a shaft;

the flexible display screen comprises a first non-bending part, a bending part and a second non-bending part which are sequentially arranged;

the first shell (10) is fixedly connected with the first non-bending part, and the second shell (30) is fixedly connected with the second non-bending part;

the first elastic component is positioned between the shaft and the first shell (10), the first elastic component is rotatably connected with the shaft through a first rotating shaft (5112), the first elastic component is abutted against a first structural member (9113) of the shaft, and the first elastic component is fixedly connected with the first shell (10);

the electronic device is in a flat state, the first elastic assembly is abutted to a first position of the first structural member (9113), the distance between the axis of the first rotating shaft (5112) and the first position is a first distance, the projection length of the first distance on a first plane is a first projection length, and the first plane is a plane where a surface fixedly connected with the first housing (10) and the first non-bending part (2001) is located;

the first shell (10) rotates relative to the shaft, the second shell (30) rotates relative to the shaft, and the electronic equipment is converted from the flat state to the folded state;

the electronic device is in the folded state, the first elastic assembly is abutted against a second position of the first structural member (9113), the distance between the axis of the first rotating shaft (5112) and the second position is a second distance, the projection length of the second distance on the first plane is a second projection length, and the second projection length is smaller than the first projection length;

wherein the first location and the second location are different.

21. The electronic device of claim 20,

the electronic device is in the flat state, and the compression amount of the first elastic component in a first direction is a first compression amount, wherein the first direction is perpendicular to the length extension direction of the shaft, and the first direction is parallel to the first shell;

the electronic equipment is in folded state, the first elastic component is in the compressive capacity of first direction is the second compressive capacity, the second compressive capacity is less than first compressive capacity.

22. The electronic device according to claim 20, wherein the electronic device is in the flat state, and a force transmitted to the bent portion (2002) through the first housing (10) and the first non-bent portion (2001) is a first force;

23. The electronic device according to any of claims 20 to 22, wherein the first elastic member is provided with a connection hole (3111);

the first rotating shaft (5112) is arranged in the connecting hole (3111) in a penetrating manner;

the first section of the connecting hole (3111) at least comprises one or more of a waist circle, an ellipse, a circle and a rectangle, wherein the first section is perpendicular to the length extension direction of the first rotating shaft (5112).

24. The electronic device of claim 20, further comprising a second resilient component;

the shaft comprises a first rotating part, a second rotating part and a main shaft (1);

the first rotating member comprises a first transmission arm (41), a first connecting piece (61) and a first rotating arm (51);

the second rotating member comprises a second transmission arm (42), a second connecting piece (62) and a second rotating arm (52);

25. A folding device is applied to an electronic device with a flexible display screen, wherein the flexible display screen (200) comprises a first non-bending part (2001), a bending part (2002) and a second non-bending part (2003) which are sequentially arranged, and the folding device is characterized by comprising a first shell (10), a second shell (30), a first elastic component and a shaft;

26. The folding apparatus of claim 25, wherein the electronic device is in the unfolded state, and a force transmitted to the bending portion (2002) through the first housing (10) and the first non-bending portion (2001) is a first force;

27. The folding device of claim 26, characterized in that said shaft is rotatably connected to said first elastic assembly by a first rotation shaft (5112);

28. The folding device according to any one of claims 25 to 27, characterized in that said first elastic component is provided with a coupling hole (3111);

29. The folding device of claim 25, further comprising a second elastic component;