CN112901649A

CN112901649A - Three-section type internal folding hinge

Info

Publication number: CN112901649A
Application number: CN202110255348.5A
Authority: CN
Inventors: 陈荣; 许钰锋
Original assignee: Dongguan Huanli Intelligent Technology Co ltd
Current assignee: Dongguan Huanli Intelligent Technology Co ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-06-04

Abstract

The invention relates to a three-section type internal folding hinge which comprises a left spring support, a right spring support, a synchronization mechanism, a locking mechanism and a screen support avoiding mechanism, wherein the synchronization mechanism comprises a baffle, a torsion piece, a gear set and a limiting plate; one end of the left spring support is connected with the gear set and the first rotating block, and one end of the right spring support is connected with the gear set and the second rotating block; the first rotating block and the second rotating block are partially abutted against the lifting block to realize the lifting action of the lifting block, extension columns are arranged at two ends of the lifting block, inclined grooves are formed in the end portions of the left cover plate and the right cover plate, and the extension columns are correspondingly arranged in the inclined grooves respectively. The three-section type internal folding hinge is small in space occupation ratio, the action mechanism is simple and efficient, the appearance of any three-section type folding mobile terminal can be met, and the practicability and the use scene are effectively improved.

Description

Three-section type internal folding hinge

Technical Field

The invention relates to the technical field of hinges, in particular to a three-section type internal folding hinge.

Background

The flexible screen is a flexible screen and is referred to as a flexible OLED. Successful mass production of flexible screens is not limited to the manufacture of the new generation of high-end smart phones, but also brings profound influence to the application of wearable devices due to the characteristics of low power consumption and flexibility, wherein the folding hinges are used as common accessories of flexible screen folding devices.

However, the conventional three-stage internal folding hinge structure has the problems that the number of hinge actuating mechanisms is large and complicated, the structural connection is unstable, the space occupation ratio in the mobile terminal is large, and the hinge cannot be matched with the appearance of any mobile terminal. Therefore, the research on the internal folding hinge which has small space occupation ratio and simple and efficient action mechanism and can meet the appearance of any three-section type folding mobile terminal is significant.

Disclosure of Invention

Therefore, it is necessary to provide a three-section type internal folding hinge aiming at the problem that the existing three-section type internal folding hinge structure has many and complicated hinge action mechanisms, so that the structural complexity of the hinge is greatly simplified, the space is saved, and the three-section type internal folding hinge can be matched with any appearance.

In order to realize the purpose of the invention, the invention adopts the following technical scheme:

a three-section type internal folding hinge comprises a left spring support, a right spring support, a synchronizing mechanism, a locking mechanism and a screen supporting and avoiding mechanism, wherein the synchronizing mechanism comprises a baffle, a torsion piece, a gear set and a limiting plate, the screen supporting and avoiding mechanism comprises a first rotating block, a second rotating block, a sliding block, a lifting block, a left cover plate and a right cover plate, and the locking mechanism is used for generating locking force to realize locking action of opening or closing a screen; one end of the left spring support is connected to the gear set and the first rotating block, one end of the right spring support is connected to the gear set and the second rotating block, and the left spring support and the right spring support are symmetrically arranged to realize synchronous linkage; the first rotating block and the second rotating block are partially abutted against the lifting block to achieve lifting action of the lifting block, extending columns are arranged at two ends of the lifting block, inclined grooves are formed in the end portions of the left cover plate and the right cover plate, and the extending columns are correspondingly arranged in the inclined grooves to achieve screen supporting and space avoiding actions of the left cover plate and the right cover plate.

The three-section type internal folding hinge has small space occupation ratio and simple and efficient action mechanism, and can meet the appearance of any three-section type folding mobile terminal; meanwhile, the three-section type internal folding hinge has a screen supporting action when being unfolded, and the screen is bent in space when being closed, so that the practicability is effectively improved.

In one embodiment, the gear set comprises a left gear, a middle gear assembly and a right gear which are meshed in sequence, the middle gear assembly comprises a first middle gear and a second middle gear, and the first middle gear is meshed with the second middle gear.

In one embodiment, the left spring support and the right spring support are both provided with a protruding block, two ends of the baffle are respectively provided with an angle limiting groove, and the protruding blocks are matched with the angle limiting grooves; the left spring support and the right spring support are provided with cylindrical bosses, and the cylindrical bosses are in interference fit with the torsion pieces.

In one embodiment, a support column is arranged at the middle section of the limit plate, a sliding groove is arranged at the middle section of the lifting block, the sliding block is mounted in the sliding groove, and the support column is connected to the sliding block; the cylinder boss of left side spring bracket connect in left side gear reaches first rotatory piece, the cylinder boss of right side spring bracket connect in right side gear reaches the rotatory piece of second, first rotatory piece reaches the rotatory piece of second all is equipped with rotatory boss, the both sides of elevator are equipped with the circular arc groove, first rotatory piece reaches the rotatory boss of the rotatory piece of second install respectively in the both sides circular arc inslot of elevator is in order to realize the lift action of elevator.

In one embodiment, the screen support avoiding mechanism further comprises a first auxiliary module and a second auxiliary module, the first auxiliary module is connected to the left cover plate, the second auxiliary module is connected to the right cover plate, the first auxiliary module comprises a fixing seat, a connecting rod and an elastic member, the fixing seat is installed on the left spring support, the connecting rod and the elastic member are installed in the fixing seat, and the end portion of the connecting rod is connected to the clamping portion of the left cover plate.

In one embodiment, the portable electronic device further comprises a left shell, a right shell and a middle shell, wherein the left shell and the right shell are respectively located on two sides of the middle shell, the left cover plate is movably connected to two ends of the left shell, the right cover plate is movably connected to two ends of the right shell, the other end of the left spring support is connected to the left shell, and the other end of the right spring support is connected to the right shell.

In one embodiment, the locking mechanism comprises a first locking module and a second locking module, the first locking module is mounted to the left spring support, and the second locking module is mounted to the right spring support; first locking module includes first bracing piece and first elastic component, the outer wall of middle casing is equipped with a plurality of butt joint groove, first bracing piece slide connect in the outer wall of middle casing is in order to realize that the screen opens or the closed locking action of screen.

Drawings

FIG. 1 is a schematic view of a three-piece internal folding hinge according to a preferred embodiment of the present invention in an unfolded state;

FIG. 2 is a schematic view of a three-piece internal folding hinge of FIG. 1 in a closed state;

FIG. 3 is an exploded view of a three-piece internal folding hinge of FIG. 1;

FIG. 4 is a schematic diagram illustrating an expanded state of the first integration module of FIG. 1;

FIG. 5 is a schematic view of the first integration module of FIG. 4 in a bending state;

FIG. 6 is a schematic diagram of the first integration module of FIG. 4 in a closed state;

FIG. 7 is an exploded view of the first integration module of FIG. 4;

FIG. 8 is a cross-sectional view of the screen support avoidance mechanism of FIG. 1 in an expanded state;

FIG. 9 is a cross-sectional view of the screen support avoidance mechanism of FIG. 8 in a flexed condition;

FIG. 10 is a cross-sectional view of the screen support avoidance mechanism of FIG. 8 in a closed state;

FIG. 11 is a cross-sectional view of the locking mechanism of FIG. 1 in an expanded state;

FIG. 12 is a cross-sectional view of the locking mechanism of FIG. 11 in a bent state;

FIG. 13 is a cross-sectional view of the locking mechanism of FIG. 11 in a closed state;

fig. 14 is an exploded schematic view of the locking mechanism of fig. 11.

The reference numbers illustrate:

100. a three-section internal folding hinge;

11. a left housing, 12, a right housing, 13, a middle housing, 20, a first integrated module, 21, a left spring support, 22, a right spring support, 23, a synchronizing mechanism, 231, a baffle, 231a, an angle limiting groove, 232, a torsion piece, 234, a gear set, 234a, a left gear, 234b, a right gear, 234c, a first middle gear, 234d, a second middle gear, 235, a limiting plate, 24, a locking mechanism, 241, a first supporting rod, 242, a first elastic member, 25, a screen support avoiding mechanism, 251, a first rotating block, 252, a second rotating block, 253, a sliding block, 254, a lifting block, 254a sliding groove, 254b, a circular arc groove, 254c, an extending column, 255, a left cover plate, 256, a right cover plate, 26, a cylindrical boss, 257, a rotating boss, 258, an inclined groove, 27, a first auxiliary module, 271, a fixed seat, 272, a connecting rod, 273, an elastic member, 28. a second auxiliary module 30, and a second integrated module.

Detailed Description

In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 14, a three-section type internal folding hinge 100 according to a preferred embodiment of the present invention includes a left housing 11, a right housing 12, a middle housing 13, a first integrated module 20 and a second integrated module 30, wherein the first integrated module 20 and the second integrated module 30 are respectively disposed at two ends of the middle housing 13; the second integrated module 20 has the same structure as the first integrated module 10, and the modular operation and the symmetrical joint design of the hinge are realized by the combined use of the two integrated modules. The first comprehensive module 20 comprises a left spring support 21, a right spring support 22, a synchronizing mechanism 23, a locking mechanism 24 and a screen support avoiding mechanism 25, the synchronizing mechanism 23 is fixedly connected to the end of the middle shell 13, the synchronizing mechanism 23 comprises a baffle 231, a torsion sheet 232, a gear set 234 and a limiting plate 235, the torsion sheet 232 and the gear set 234 are positioned between the baffle 231 and the limiting plate 235, one end of the left spring support 21 and one end of the right spring support 22 are respectively connected to the left shell 11 and the right shell 12, the other end of the left spring support 21 and the other end of the right spring support 22 are respectively movably connected to the synchronizing mechanism 23 and the screen support avoiding mechanism 25, the left spring support, the right spring support, the synchronizing mechanism, the locking mechanism, the screen support avoiding mechanism and the shells form a motion closed design, thereby realizing a hinge symmetrical joint structure and ensuring synchronous rotation action at two ends of a hinge, the method is suitable for mobile terminals with outer flexible screens, such as mobile phones, notebook computers and the like.

Further, the left housing 11 and the right housing 12 are respectively located at two sides of the middle housing 13, the gear set 234 includes a left gear 234a, a middle gear assembly and a right gear 234b which are sequentially engaged, the middle gear assembly includes a first middle gear 234c and a second middle gear 234d, the first middle gear 234c is engaged with the second middle gear 234d to provide force transmission, so as to realize synchronous linkage of the left gear 234a and the right gear 234 b; meanwhile, the left gear 234a and the right gear 234b are respectively installed on the flat positions of the bosses of the left spring support 21 and the right spring support 22, so that the left spring support 21 and the right spring support 22 can correspondingly drive the left gear 234a and the right gear 234b to rotate. It should be noted that, in the present embodiment, the number of the intermediate gear assemblies is two, that is, the number of the first intermediate gear 234c and the second intermediate gear 234d is one; it is understood that in other embodiments, the number and size of the gears of the intermediate gear assembly can be adjusted according to actual use scenarios and production requirements, and it should be ensured that the left gear and the right gear can achieve stable synchronous linkage, so the number of the intermediate gear assembly is not limited too much.

Further, the left spring support 21 and the right spring support 22 are both provided with a protruding block, two ends of the baffle 231 are respectively provided with an angle limiting groove 231a, the protruding block is matched with the angle limiting groove 231a, and the maximum rotation angle of the rotating shaft is limited through the limiting actions of the protruding block and the angle limiting groove 231 a. Meanwhile, the cylindrical bosses 26 of the left spring support 21 and the right spring support 22 are in interference fit with the torsion pieces 232, so that the left spring support 21 and the right spring support 22 generate friction force when rotating, and the rotating shaft generates torsion.

The working principle of the synchronizing mechanism is as follows: in the process of the rotating shaft from being unfolded to being closed, the left shell 11 rotates clockwise to drive the left spring bracket 21 to rotate clockwise, so that the left gear 234a is driven to rotate clockwise; and then, the right gear 234b is driven to rotate anticlockwise through the transmission of the intermediate gear assembly, so that the right spring support 22 is driven to move anticlockwise, and further the right shell 12 is driven to move anticlockwise, so that the synchronous closing motion of the rotating shafts is realized. Similarly, when the rotating shaft is driven by the rotating shaft to be unfolded to the closed process, the left shell 11 rotates anticlockwise to drive the left spring support 21 to rotate anticlockwise, so that the left gear 234a rotates anticlockwise, the right gear 234b rotates clockwise through the transmission of the intermediate gear assembly, the right spring support 22 moves clockwise, the right shell 12 moves clockwise, the synchronous unfolding motion of the rotating shaft is realized, and the synchronous motion of the rotating shaft is finally realized.

Further, the screen support avoiding mechanism 25 comprises a first rotating block 251, a second rotating block 252, a sliding block 253, a lifting block 254, a left cover plate 255 and a right cover plate 256, wherein a supporting column is arranged at the middle section of the limiting plate 235, a sliding groove 254a is arranged at the middle section of the lifting block 254, the sliding block 253 is installed in the sliding groove 254a, and the supporting column is connected to the sliding block 253; the cylinder boss 26 of the left spring support is connected to the first rotating block 251, the cylinder boss of the right spring support is connected to the second rotating block 252, the first rotating block 251 and the second rotating block 252 are both provided with rotating bosses 257, the two sides of the lifting block 254 are provided with arc grooves 254b, and the rotating bosses of the first rotating block 251 and the second rotating block 252 are respectively installed in the arc grooves 254b on the two sides of the lifting block 254 to realize the lifting action of the lifting block.

Furthermore, the left cover plate 255 is movably connected to two ends of the left housing 11, the right cover plate 256 is movably connected to two ends of the right housing 12, two ends of the lifting block 254 are provided with extending columns 254c, end portions of the left cover plate 255 and the right cover plate 256 are provided with inclined grooves 258, and the extending columns 254c are respectively and correspondingly installed in the inclined grooves 258 to realize screen supporting and space avoiding actions of the left cover plate and the right cover plate.

Further, the screen support avoiding mechanism 25 further comprises a first auxiliary module 27 and a second auxiliary module 28, the first auxiliary module 27 is connected to the left cover plate 255, the second auxiliary module 28 is connected to the right cover plate 256, the first auxiliary module 27 comprises a fixed seat 271, a connecting rod 272 and an elastic piece 273, the fixed seat 271 is installed on the left spring support 21, the connecting rod 272 and the elastic piece 273 are installed in the fixed seat 271, and the end of the connecting rod 272 is connected to the clamping portion of the left cover plate 255.

The working principle of the screen support avoiding mechanism 25 is as follows: when the rotating shaft is opened to be closed, the left shell 11 rotates clockwise to drive the left spring support 21 to rotate clockwise, so that the first rotating block 251 is driven to rotate clockwise; meanwhile, the right housing 12 generates counterclockwise motion to drive the right spring support 22 to rotate counterclockwise, and drive the second rotating block 252 to move counterclockwise; first rotatory piece 251 rotates clockwise and second rotatory piece 252 anticlockwise makes respective rotatory boss 257 down rotate to down press elevator 254, make elevator 254 drive left cover plate 255 and right cover plate 256 and move down, left cover plate 255 and right cover plate 256 rotate toward both sides around respectively with left casing 11 and right casing 12 swing joint's rotation center separately simultaneously, thereby give the space and give the screen and bend. Similarly, when the shaft is opened from the closed position, the lifting block 254 moves in a reverse direction to move the left cover 255 and the right cover 256 upward, thereby supporting the screen. Meanwhile, in the process of unfolding and closing, the first auxiliary module and the second auxiliary module can continuously pull the left cover plate 255 and the right cover plate 266, provide partial force for rotation avoidance of the respective cover plates, and provide partial supporting force for supporting the screen by the corresponding cover plates.

Further, the locking mechanism 24 includes a first locking module and a second locking module, and the second locking module has the same structure as the first locking module and is used for providing a locking hand feeling for the rotating shaft; the first locking module is arranged on the left spring support, and the second locking module is arranged on the right spring support; the first locking module comprises a first supporting rod 241 and a first elastic piece 242, the outer wall of the middle shell 13 is provided with a plurality of abutting grooves, and the first supporting rod 241 is connected to the outer wall of the middle shell 13 in a sliding mode to achieve locking action of opening or closing the screen.

The working principle of the locking mechanism 24 is: in the process that the rotating shaft is opened to be closed, the supporting rods of the first locking module and the second locking module slide out upwards from the positions of the left and right abutting grooves of the middle shell 13 respectively, in the process, the first supporting rod 241 continuously compresses the first elastic piece 242, and the first elastic piece 242 provides locking force to enable the rotating shaft to generate locking hand feeling; when the end of the first support bar 241 completely slides out of the abutting grooves at the left and right ends, the left and right abutting grooves continue to slide along the middle shell, and at this time, the first elastic element 242 is not continuously compressed by the left and right abutting grooves, the spring force is unchanged, and the rotating shaft rotates stably; when the first support rod 241 rotates to the top of the abutting groove above the middle shell, the support rod automatically slides to the bottom of the abutting groove under the action of the spring force, the spring force is gradually reduced, the rotating shaft is automatically closed at the moment, and the locking hand feeling during closing is generated; similarly, the principle of the motion of the opening of the rotating shaft is the same, and in the process from the closing to the unfolding of the rotating shaft, the first elastic member 242 slides from the upper abutting groove of the middle shell 13 to the abutting grooves at the two ends of the middle shell 13, so that the automatic unfolding processing of the rotating shaft is realized.

It should be noted that, in this embodiment, the elastic member of the first auxiliary module and the first elastic member of the first locking module are springs for realizing and generating corresponding spring acting forces; it is understood that in other embodiments, the elastic member and the first elastic member may be other elastic members with good elasticity, such as elastic sheets, etc., so that the types of the elastic member and the first elastic member can be adjusted according to actual production conditions, and are not limited in this application.

The mounting mode of the synchronizing mechanism and the screen support avoiding mechanism is as follows: one end of the left spring support 21 and one end of the right spring support 22 are respectively fixed on the left shell 11 and the right shell 12, and the other end of the left spring support 21 and the other end of the right spring support 22 respectively connect the baffle 231, the torsion piece 232, the gear, the limiting plate 235, the first rotating block and the second rotating block in series through the cylindrical boss 26 to form a whole; the middle gear assembly is meshed with the left gear 234a and the right gear 234b respectively and is arranged on corresponding hole positions of the torque sheet 232 and the limiting plate 235; the lifting block 254 is mounted on the support column of the limit plate to mount the slider on the sliding groove; the rotary bosses of the first rotary block 251 and the second rotary block 252 respectively pass through the arc grooves at the two sides of the lifting block 254, so that the rotary bosses can slide in the arc grooves.

The three-section type internal folding hinge has small space occupation ratio and simple and efficient action mechanism, and can meet the appearance of any three-section type folding mobile terminal.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a folding hinge in syllogic which characterized in that: the screen support avoiding mechanism comprises a first rotating block, a second rotating block, a sliding block, a lifting block, a left cover plate and a right cover plate, and the locking mechanism is used for generating locking force to realize locking action of opening or closing the screen; one end of the left spring support is connected to the gear set and the first rotating block, one end of the right spring support is connected to the gear set and the second rotating block, and the left spring support and the right spring support are symmetrically arranged to realize synchronous linkage through the gear set; the first rotating block and the second rotating block are partially abutted against the lifting block to achieve lifting action of the lifting block, extending columns are arranged at two ends of the lifting block, inclined grooves are formed in the end portions of the left cover plate and the right cover plate, and the extending columns are correspondingly arranged in the inclined grooves to achieve screen supporting and space avoiding actions of the left cover plate and the right cover plate.

2. The three-piece internal folding hinge according to claim 1, characterized in that: the gear set comprises a left gear, a middle gear assembly and a right gear which are sequentially meshed, the middle gear assembly comprises a first middle gear and a second middle gear, and the first middle gear is meshed with the second middle gear.

3. The three-piece internal folding hinge according to claim 1, characterized in that: the left spring support and the right spring support are both provided with a convex block, two ends of the baffle are respectively provided with an angle limiting groove, and the convex blocks are matched with the angle limiting grooves; the left spring support and the right spring support are provided with cylindrical bosses, and the cylindrical bosses are in interference fit with the torsion pieces.

4. A three-piece internal folding hinge according to claim 3, characterized in that: the middle section of the limiting plate is provided with a supporting column, the middle section of the lifting block is provided with a sliding groove, the sliding block is mounted in the sliding groove, and the supporting column is connected to the sliding block; the cylinder boss of left side spring bracket connect in left side gear reaches first rotatory piece, the cylinder boss of right side spring bracket connect in right side gear reaches the rotatory piece of second, first rotatory piece reaches the rotatory piece of second all is equipped with rotatory boss, the both sides of elevator are equipped with the circular arc groove, first rotatory piece reaches the rotatory boss of the rotatory piece of second install respectively in the both sides circular arc inslot of elevator is in order to realize the lift action of elevator.

5. The three-piece internal folding hinge according to claim 1, characterized in that: the screen supports and dodges mechanism still includes first supplementary module and the supplementary module of second, first supplementary module connect in left side apron, the supplementary module of second connect in right side apron, first supplementary module includes fixing base, connecting rod and elastic component, the fixing base install in left side spring bracket, connecting rod and elastic component install in the fixing base, the end connection of connecting rod in the joint portion of left side apron.

6. The three-piece internal folding hinge according to claim 1, characterized in that: still include left casing, right casing and well casing, left side casing and right casing are located respectively the both sides of middle casing, left side apron swing joint in the both ends of left side casing, right side apron swing joint in the both ends of right side casing, the other end of left side spring bracket connect in left side casing, the other end of right side spring bracket connect in right side casing.

7. The three-piece internal folding hinge according to claim 6, characterized in that: the locking mechanism comprises a first locking module and a second locking module, the first locking module is mounted on the left spring support, and the second locking module is mounted on the right spring support; first locking module includes first bracing piece and first elastic component, the outer wall of middle casing is equipped with a plurality of butt joint groove, first bracing piece slide connect in the outer wall of middle casing is in order to realize that the screen opens or the closed locking action of screen.