CN218760886U

CN218760886U - Folding assembly, folding device and electronic equipment

Info

Publication number: CN218760886U
Application number: CN202222777356.9U
Authority: CN
Inventors: 王岗超; 李云勇; 徐正一; 唐泽成; 吴昊; 闫辉垠
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-03-28
Anticipated expiration: 2032-10-20

Abstract

The application discloses folding assembly, folding device and electronic equipment. The electronic equipment comprises a flexible display screen and a folding device for bearing the flexible display screen, wherein the folding device comprises a first shell, a folding assembly and a second shell which are sequentially connected, and the folding assembly comprises a first swing arm, a second swing arm, a stop block and a limiting block. The first swing arm and the second swing arm are stopped through the stopping block, the included angle between the first shell and the second shell in the opening state can be accurately controlled, the phenomenon of over-folding of the folding device is avoided, and therefore the service life of the flexible display screen is prolonged. The stop block is reinforced by the limiting block, so that the stop reliability of the stop block is higher.

Description

Folding assembly, folding device and electronic equipment

Technical Field

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

Background

In recent years, flexible display screens are widely used in various foldable electronic devices due to their characteristics of being light, thin and not fragile. The foldable electronic device further comprises a folding device for bearing the flexible display screen, the folding device generally comprises two shells and a folding assembly connected between the two shells, and the two shells are relatively folded or relatively unfolded through the deformation of the folding assembly and drive the flexible display screen to be folded or unfolded.

At present, when two shells of a folding device are relatively unfolded to an opening state, the problem of folding is easy to occur, and an actual included angle between the two shells is larger than an ideal included angle. The design size and structure of the flexible display screen are usually designed according to an ideal included angle, so that when the two shells are folded when being unfolded, the folding device can pull the flexible display screen, and the service life of the flexible display screen is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The application provides a folding assembly, a folding device and an electronic device. The electronic equipment comprises the flexible display screen and a folding device for bearing the flexible display screen, the folding device comprises a first shell, a folding assembly and a second shell which are sequentially connected, the folding assembly accurately controls the included angle of the first shell and the second shell in an opening state through an adjustable rotating mechanism, and the phenomenon that the folding device is folded is avoided, so that the service life of the flexible display screen is prolonged.

In a first aspect, the present application provides a folding assembly, which may be applied to a foldable electronic device, where a folding device of the electronic device includes a first housing, a second housing, and the folding assembly, and the folding device is used for bearing a flexible display screen. The folding assembly comprises a main shaft, a first fixing frame, a first swing arm, a second fixing frame, a second swing arm, a limiting part, a stop part, a second fastening part and a first elastic part. The first fixing frame is used for fixedly connecting the first shell, and the second fixing frame is used for fixedly connecting the second shell.

The first end part of the first swing arm is rotatably connected with the main shaft, the second end part of the first swing arm is connected with the first fixing frame in a sliding manner, and the first end part of the first swing arm is provided with a first stop end surface; the first end of the second swing arm is rotatably connected with the main shaft, the second end of the second swing arm is slidably connected with the second fixing frame, and the first end of the second swing arm is provided with a second stop end face. The limiting part is fixed on the main shaft, the limiting part is provided with a limiting surface, the limiting surface inclines relative to the thickness direction of the main shaft and the extending direction of the main shaft, and the extending direction of the main shaft is perpendicular to the thickness direction of the main shaft. The stop part comprises a first stop part, a second stop part and an installation part, the first stop part and the second stop part are respectively fixed on two sides of the installation part, one end of the second fastener is connected with the installation part, the other end of the second fastener is in threaded connection with the main shaft, the first elastic part is abutted between the installation part and the main shaft, and the stop part is abutted against the limiting surface.

The first stop portion has a first stop surface, the second stop portion has a second stop surface, and the first stop surface and the second stop surface are not parallel to the thickness direction of the main shaft. In the process that the first swing arm and the second swing arm are relatively unfolded, the first stop end face moves towards the direction close to the first stop face, and the second stop end face moves towards the direction close to the second stop face; when the first swing arm and the second swing arm are in an opening state, the first stop end face is at least partially abutted against the first stop face, and the second stop end face is at least partially abutted against the second stop face.

In this application, through the first position cooperation structure that ends of ending of the first position face that ends of setting up the position piece and the first position terminal surface that ends of first swing arm, the second position cooperation structure that ends of the second position face that ends the position piece and the second of second swing arm end face, can expand relatively to the open mode in first swing arm and second swing arm, restrict first swing arm and second swing arm and continue relative rotation, make the contained angle between first swing arm and the second swing arm stop in predetermined angle, avoid appearing excessive pivoted phenomenon.

Because the first swing arm is connected with the first fixing frame in a sliding manner, the first fixing frame is used for fixedly connecting the first shell, the second swing arm is connected with the second fixing frame in a sliding manner, and the second fixing frame is used for fixedly connecting the second shell, the stopping positions of the stopping piece on the first swing arm and the second swing arm are also the stopping positions on the first shell and the second shell. In the electronic device, when the first housing and the second housing rotate relatively to an open state, the first fixing frame and the second fixing frame also rotate relatively to the open state. Furthermore, the first swing arm and the second swing arm can rotate relatively to the opening state. At this moment, the first end of the first swing arm and the first end of the second swing arm can abut against the stop piece, and the stop piece is used for preventing the relative rotation angle of the first swing arm and the second swing arm from exceeding a preset value, further preventing the relative rotation angle of the first fixing frame and the second fixing frame from exceeding the preset value, and preventing the relative rotation angle of the first shell and the second shell from exceeding the preset value. Therefore, the stop piece stops the first swing arm and the second swing arm, and the first shell and the second shell are prevented from being folded when the electronic equipment is in an open state, so that the flexible display screen is prevented from being pulled by the first shell and the second shell, the reliability of the flexible display screen is improved, and the service life of the flexible display screen is prolonged.

In addition, due to the stop effect of the stop piece, the included angle between the first shell and the second shell in the opening state is equal to the preset value. For example, when the preset value is 180 degrees, the folding device can provide a flat supporting environment for the flexible display screen, the flatness of the flexible display screen is good, and the whole machine shadow of the electronic equipment is favorably optimized.

In addition, through ending the position face with first and the second and locating same one and ending the position piece, realize ending the position to first swing arm and second swing arm through same one and ending the position piece, can effectively reduce the required quantity that ends the position piece of folding assembly, reduce and end the position piece and occupy the inside space of folding assembly, be favorable to reduce cost.

In this application, because the locating part is fixed in the main shaft, only the position piece supports the spacing face of holding the locating part, and the locating part can carry on spacingly to ending the position piece, consequently can increase the structural stability and the structural rigidity of the relative main shaft of only the position piece, ends the position piece and can end the position to first swing arm and second swing arm better, ends the position effect better for folding assembly and electronic equipment's flattening state is more stable, reliable.

Because second fastener threaded connection main shaft, the position of second fastener relative main shaft is adjustable, therefore the second fastener moves in the thickness direction of main shaft, and the position-stopping piece can follow the second fastener and move in the thickness direction of main shaft under the cooperation of second fastener and first elastic component to carry out position control. When the stop piece moves in the thickness direction of the main shaft, the first stop surface and the second stop surface move in the thickness direction of the main shaft, when the first swing arm and the second swing arm are in an open state, the position of the first stop end surface of the first swing arm changes along with the first stop surface, and the position of the second stop end surface of the second swing arm changes along with the second stop surface, so that the size of an included angle between the first swing arm and the second swing arm can be adjusted by adjusting the position of the stop piece.

For example, the first stop surface and the second stop surface of the stop member may be perpendicular to the thickness direction of the main shaft. Alternatively, the angle between the first stop surface and the thickness direction of the main shaft is greater than or equal to 45 degrees, and for example, can be in the range of 60 degrees to 90 degrees; the second stop surface may have an angle of greater than or equal to 45 °, for example, in the range of 60 ° to 90 °, with the thickness direction of the main axis. At the moment, when the first stop surface and the second stop surface move along with the stop piece in the thickness direction of the spindle, effective adjustment of an included angle between the first swing arm and the second swing arm can be achieved through small displacement.

In some possible implementations, the folding assembly further includes a first swivel arm and a second swivel arm. The first end part of the first rotating arm is rotatably connected with the main shaft, and the second end part of the first rotating arm is rotatably connected with the first fixing frame. The second end of the second rotating arm is rotatably connected with the main shaft, and the second end of the second rotating arm is rotatably connected with the second fixing frame.

In the implementation mode, the first swing arm is rotationally connected with the main shaft and is in sliding connection with the first fixing frame to form a connecting rod sliding block structure, and the first swing arm is rotationally connected with the main shaft and is rotationally connected with the first fixing frame to form a connecting rod structure; the second swing arm is rotatably connected with the main shaft and is in sliding connection with the second fixing frame to form a connecting rod sliding block structure, and the second rotating arm is rotatably connected with the main shaft and is rotatably connected with the second fixing frame to form a connecting rod structure. Folding assembly passes through connecting rod slider structure and connection structure and realizes folding assembly's relative expansion, relative folding process, and its component part is small in quantity, cooperation relation and cooperation position are simple, and the component part is easily makeed and is assembled, is favorable to realizing the volume production. In addition, the main shaft is linked with the first fixing frame through the first swing arm and the first rotating arm and linked with the second fixing frame through the second swing arm and the second rotating arm, so that the folding assembly has better mechanism tensile capacity and mechanism anti-extrusion capacity.

In some possible implementations, the mounting portion has a second through hole, the second through hole has at least two stop positions, the at least two stop positions are arranged in the extending direction of the main shaft, and the second fastening member passes through one of the stop positions.

In the implementation mode, when the second fastening piece penetrates through the stop position of the stop member and is in threaded connection with the main shaft, the stop member stops at a certain position relative to the main shaft, the relative position relation between the stop member and the main shaft is stable and reliable, when the second fastening piece is switched from one stop position of the stop member to the other stop position, the stop position of the stop member relative to the main shaft is changed, and the stop member and the main shaft are still relatively fixed after the change. Because two at least stop positions are arranged in the extending direction of the main shaft, when the second fastener is switched between different stop positions, the first stop end face and the second stop end face can realize position adjustment in the thickness direction of the main shaft, and therefore the included angle between the first swing arm and the second swing arm when the second fastener is in an opening state is adjusted.

In some possible implementations, the second through hole is a kidney-shaped hole or a rectangular hole, and a length direction of the second through hole is parallel to an extending direction of the main shaft.

In an implementation mode, the length direction of the second through hole is parallel to the extending direction of the main shaft, so that the plurality of stop positions can be arranged along the extending direction of the main shaft, the stop member can be continuously adjusted in the extending direction of the main shaft, the first stop end face and the second stop end face can be continuously adjusted in the thickness direction of the main shaft, and the included angle between the first swing arm and the second swing arm can be continuously adjusted in an opening state.

In some possible implementations, the first elastic member may be an elastic pad, and the elastic member may be provided with a through hole. The elastic gasket can be made of metal materials, for example, the elastic gasket can be a spring washer, a plate spring and the like; alternatively, the elastic pad may be made of an elastic rubber material or the like. In other implementations, the first resilient member may include a plurality of stacked members, for example, the first resilient member may include a spring washer and a flat washer stacked in a stacked arrangement, the flat washer may be a metal washer, a rubber washer, or the like. In other implementations, the first resilient member may also be a spring.

In some possible implementation manners, the folding assembly further includes a second elastic member, the second elastic member is mounted on the main shaft and located on one side of the stop member, which is opposite to the limiting member, the second elastic member abuts against the mounting portion, and the stop member abuts against the limiting surface due to an elastic force generated by the second elastic member. At this moment, the abutting relation between the limiting part and the stop part is stable, the limiting part can better limit the stop part, and the stop effect of the stop part is stable and reliable.

In some possible implementations, the folding assembly further includes a third rotating shaft, the third rotating shaft has a limit flange, and the third rotating shaft is inserted into the mounting portion of the second elastic member and the stop member. The two ends of the second elastic piece respectively abut against the limiting flange of the third rotating shaft and the mounting part of the stop piece, and one end of the third rotating shaft, which is far away from the second elastic piece, is mounted on the main shaft. The second elastic piece is in a compression state, the third rotating shaft can be abutted to the main shaft by the elastic force generated by the second elastic piece, and the stop piece is also enabled to have a tendency of approaching to the limiting piece, so that the stop piece is abutted to the limiting piece. In other implementation manners, the third rotating shaft may not be provided with a limiting flange, one end of the second elastic member, which is far away from the stop member, may abut against the spindle or another structural member, and the second elastic member may also be in a compressed state to generate an elastic force, so that the stop member abuts against the limiting member.

In other implementations, the folding assembly may not include the second elastic member, a static friction force may exist between the limiting surface of the limiting member and the stopping member, and a static friction force may exist between the stopping member and the first elastic member. In this implementation manner, the folding assembly balances component force of the supporting force of the limiting member to the stop member in the extending direction of the main shaft through static friction between the limiting member and the stop member, so that the position of the stop member relative to the main shaft is stable, and the stop effect of the stop member to the first swing arm and the second swing arm is reliable.

In some possible implementations, the stop member has an adjustment surface that is parallel to and contacts the limit surface.

In this implementation, be the face contact between regulation face and the contact surface, consequently the area of contact between regulation face and the spacing face is big, the butt relation is stable, and the locating part can carry on spacingly to ending the position piece better to guarantee that the relative position relation between position piece and the main shaft is stable.

In some possible implementation manners, a friction layer is arranged on the limiting surface and/or the adjusting surface and is used for increasing the static friction coefficient between the limiting surface and the adjusting surface. For example, the stop surface may be provided with a friction layer. The friction layer can be fixed on the limiting surface in an assembling mode, and the friction layer can be made of materials with high static friction coefficient, such as a frosted film material, a film material with concave-convex grains and the like. Alternatively, the friction layer may be formed on the surface layer of the stopper surface by performing surface roughening treatment on the stopper surface. The surface roughening process is a prior art and is not described herein. Similarly, the adjusting surface may also be provided with a friction layer, and the formation of the friction layer may refer to the related description of the friction layer on the limiting surface, which is not described herein again.

In this implementation, through increasing the coefficient of static friction between spacing face and the regulation face to improve the static friction power of spacing face and regulation face, make the butt relation between spacing face and the regulation face more stable, when ending the effort that the position piece received first swing arm and second swing arm, stop difficult contact relation that breaks away from between the spacing face of position piece and the regulation face, thereby can improve and end a reliability.

In some possible implementations, the limiting member includes a first fixing portion, a second fixing portion and a third fixing portion, the third fixing portion is connected between the first fixing portion and the second fixing portion, and the third fixing portion is fixedly connected to the main shaft. The folding assembly further comprises a first rotating shaft and a second rotating shaft which are arranged on the main shaft, the first rotating shaft is connected with the first end portion and the first fixing portion of the first swing arm in an inserting mode, and the second rotating shaft is connected with the first end portion and the second fixing portion of the second swing arm in an inserting mode.

In this implementation, because the locating part is fixed in the main shaft, first pivot and second pivot are installed in the main shaft, and the first tip of first fixed part and first swing arm is pegged graft simultaneously to first pivot, and the first tip of second fixed part and second swing arm is pegged graft simultaneously to the second pivot, therefore when first swing arm and second swing arm rotate relatively, the rotational motion is stable, difficult rocking, is favorable to improving folding assembly's reliability.

In some possible implementations, the first fixing portion is further snapped into the first end of the first swing arm, and the second fixing portion is further snapped into the first end of the second swing arm, which helps to further improve the stability of the rotational motion of the first swing arm and the second swing arm.

In some possible implementations, the limiting surface includes a first portion and a second portion that are coplanar, the first portion of the limiting surface is located at the first fixing portion, and the second portion of the limiting surface is located at the second fixing portion.

In this implementation, because the first part of spacing face is located the first fixed part of locating part, first pivot is located to first fixed part cover, the second part of spacing face is located the second fixed part of locating part, the second pivot is located to second fixed part cover, therefore when spacing face atress, the position of the first part of spacing face and the second part of spacing face is comparatively stable, spacing face and locating part are whole difficult for taking place the deformation, structural stability is high, the locating part can be spacing to ending the piece better, thereby end the piece and reinforce, in order to improve the reliability of ending the piece.

In some possible implementations, the first stopping portion has a first adjusting hole, the second stopping portion has a second adjusting hole, the first rotating shaft passes through the first adjusting hole, the second rotating shaft passes through the second adjusting hole, the first adjusting hole and the second adjusting hole are both rectangular holes or kidney-shaped holes, and the length direction is parallel to the thickness direction of the main shaft.

In this implementation manner, since the first rotating shaft passes through the first adjusting hole of the first stopping portion of the stopping member, and the second rotating shaft passes through the second adjusting hole of the second stopping portion of the stopping member, the first rotating shaft and the second rotating shaft can perform certain limitation on the stopping member, the position of the stopping member is stable, the risk of deformation is low, and the reliability of stopping the position can be improved.

In some possible implementations, the first stop portion abuts against the first fixing portion, and the second stop portion abuts against the second fixing portion.

In this implementation manner, the first rotating shaft further passes through the first adjusting hole of the first stop portion of the stop member, the first stop portion of the stop member abuts against the first fixing portion of the limiting member, the second rotating shaft further passes through the second adjusting hole of the second stop portion of the stop member, and the second stop portion of the stop member abuts against the second fixing portion of the limiting member, so that the positions of the first stop portion and the second stop portion of the stop member are stable, the risk of deformation is low, and the stop reliability can be improved.

In some possible implementations, for example, the adjustment surface includes a first portion and a second portion that are coplanar, the first portion of the adjustment surface is located at the first stop, the first adjustment hole extends through the first portion of the adjustment surface, the second portion of the adjustment surface is located at the second stop, and the second adjustment hole extends through the second portion of the adjustment surface. The two parts of the limiting surface and the two parts of the adjusting surface are in one-to-one contact, so that the contact area between the adjusting surface and the limiting surface is large, the butt joint relation is stable, the limiting part can better limit the stop part, and the relative position relation between the stop part and the main shaft is stable.

In some possible implementations, the first stop surface and the second stop surface are symmetrical structures.

In this implementation, the first and second stop surfaces are symmetrical about a plane, which may be parallel to the thickness direction of the main shaft. At the moment, when the first swing arm and the second swing arm are relatively unfolded to an open state, the first stop end face of the first swing arm abuts against the first stop face, the second stop end face of the second swing arm abuts against the second stop face, the stop piece is easier to control the stop process of the first swing arm and the second swing arm, and the stop effect is better. In addition, the first stop surface and the second stop surface are symmetrical, so that the processing difficulty of the stop piece is reduced. The first end surface of the first swing arm and the second end surface of the second swing arm can be of a symmetrical structure or a substantially symmetrical structure.

In some possible implementations, the folding assembly further includes a damping assembly coupled to the first end of the first swing arm and the first end of the second swing arm for providing a damping force during relative movement of the first swing arm and the second swing arm.

Illustratively, the first end of first swing arm includes a plurality of first archs and a plurality of second archs that set up back to back, and the first end of second swing arm includes a plurality of first archs and a plurality of second archs that set up back to back. The damping component comprises a first clamping piece, a second clamping piece and a first elastic component, wherein the first clamping piece is provided with a plurality of first convex block groups, the second clamping piece is provided with a plurality of second convex block groups, and the plurality of first convex block groups and the plurality of second convex block groups are arranged in a one-to-one correspondence mode. The first end of the first swing arm and the first end of the second swing arm are both located between the first clamping piece and the second clamping piece, the first elastic component is located on one side, back to the first clamping piece, of the second clamping piece or on one side, back to the second clamping piece, of the first clamping piece, the first elastic component is used for generating elastic force, so that the first end of the first swing arm and the first end of the second swing arm are both abutted against the first clamping piece and the second clamping piece, the plurality of first bulges of the first swing arm are matched with one of the first lug groups to form a clamping structure, the plurality of second bulges of the first swing arm are matched with one of the second lug groups to form a clamping structure, the plurality of first bulges of the second swing arm are matched with the other first lug group to form a clamping structure, and the plurality of second bulges of the second swing arm are matched with the other second lug group to form a clamping structure.

In some possible implementations, a synchronizing assembly connects the first end of the first swing arm and the first end of the second swing arm such that the movements of the first swing arm and the second swing arm remain synchronized, e.g., synchronously rotating toward each other to achieve folding, or synchronously rotating away from each other to achieve unfolding.

In a second aspect, the present application further provides a folding device, where the folding device includes a first housing, a second housing, and any one of the above folding assemblies, a first fixing frame of the folding assembly is fixedly connected to the first housing, and a second fixing frame of the folding assembly is fixedly connected to the second housing.

In a third aspect, the present application further provides an electronic device, which includes a flexible display screen and the folding apparatus. The flexible display screen and the corresponding part of the first shell are fixed on the first shell, the corresponding part of the flexible display screen and the second shell is fixed on the second shell, and the corresponding part of the flexible display screen and the folding component deforms in the process of relatively unfolding or relatively folding the first shell and the second shell.

In this implementation, the flexible display screen can be unfolded or folded with the folding device. When the electronic equipment is in an open state, the flexible display screen is in a flat state, and the flexible display screen can display in a full screen mode, so that the electronic equipment has a large display area, and the watching experience and the operating experience of a user are 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.

Drawings

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

FIG. 2 is a schematic diagram of the electronic device shown in FIG. 1 in an intermediate state;

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

FIG. 4 is a partially exploded schematic view of the electronic device of FIG. 1;

FIG. 5 is a partially exploded view of the folding assembly shown in FIG. 4;

FIG. 6 is a partially exploded schematic view of the folding assembly shown in FIG. 5;

FIG. 7 is a schematic structural view of the bottom attachment assembly of FIG. 6;

FIG. 8 is a schematic view of a partially exploded view of the bottom attachment assembly of FIG. 7;

FIG. 9 is a schematic view of the coupling arrangement of the bottom coupling assembly of FIG. 5 to the spindle at another angle;

FIG. 10 is a schematic view of the connection of the bottom attachment assembly of FIG. 6 to the main inner shaft;

FIG. 11 is a schematic view of the adjustable rotation mechanism of FIG. 8 in some embodiments;

FIG. 12 is an exploded view of a portion of the adjustable rotation mechanism of FIG. 11;

FIG. 13 is an exploded view of another portion of the adjustable rotation mechanism of FIG. 11;

FIG. 14 is a schematic structural view of the first and second swing arms of FIG. 12;

fig. 15A is a schematic structural diagram of the limiting member shown in fig. 12;

FIG. 15B is a schematic view of the position limiting element shown in FIG. 15A at another angle;

FIG. 16A is a schematic structural view of the stop member shown in FIG. 12;

FIG. 16B is a schematic view of the stop member of FIG. 16A at another angle;

FIG. 17 isbase:Sub>A cross-sectional view of the adjustable pivot mechanism of FIG. 11 taken along line A-A;

FIG. 18 is a cross-sectional view of the adjustable rotation mechanism of FIG. 11 taken along line B-B;

FIG. 19 is a cross-sectional view of the adjustable rotation mechanism of FIG. 11 taken along line C-C;

FIG. 20 is a cross-sectional view of the adjustable rotation mechanism of FIG. 11 taken along line D-D;

FIG. 21A is a partial schematic structural view of the main inner shaft of FIG. 6 in some embodiments;

FIG. 21B is a schematic view of the main inner shaft of FIG. 21A at another angle;

FIG. 22 is a schematic view of the adjustable rotation mechanism of FIG. 11 assembled with the main inner shaft of FIG. 21A;

FIG. 23A is a schematic cross-sectional view of the structure of FIG. 22 taken along line E-E;

FIG. 23B is a schematic diagram of a portion of the structure shown in FIG. 23A;

FIG. 24 is a schematic view of an assembly structure of the position limiting member and the position stopping member shown in FIG. 22;

FIG. 25 is a schematic cross-sectional view of the structure of FIG. 22 taken along line F-F;

FIG. 26 is a schematic cross-sectional view of the structure of FIG. 22 taken along line G-G;

FIG. 27 is a schematic cross-sectional view of the structure of FIG. 22 taken along line H-H;

FIG. 28 is a partial schematic view of the stop member of FIG. 22 during position adjustment;

fig. 29 is a schematic structural view of the stop member and the stop member shown in fig. 22 in other embodiments.

Detailed Description

The following embodiments of the present application will be described with reference to the drawings of the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly stated or limited otherwise, "and/or" is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. "plurality" means two or more than two. "mounted" and "connected" are to be construed broadly, e.g., "connected" and "connected" may or may not be detachably connected; may be directly connected or may be indirectly connected through an intermediate. "fixedly connected" means connected to each other and the relative positional relationship after the connection is unchanged. "rotationally coupled" means coupled to each other and capable of relative rotation after being coupled. "slidably connected" means connected to each other and capable of sliding relative to each other after being connected. The directional terms used in the embodiments of the present application, such as "upper", "lower", "left", "right", "inner", "outer", and the like, are merely directions referring to the drawings, and thus, are used for better and clearer illustration and understanding of the embodiments of the present application, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as implying or implying relative importance or an implicit identification of a number of technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The term "integrally formed structural member" refers to a structural member that is joined to other parts of the structural member during the process of forming one of the parts, and does not need to be joined to the other parts by way of reworking (e.g., bonding, welding, clamping, etc.).

The application provides an electronic device, and the electronic device includes folding device and is fixed in the flexible display screen of folding device. The folding device comprises a folding component and two shells, wherein the folding component can be unfolded to an opening state, also can be folded to a closing state, and also can be in an intermediate state between the opening state and the closing state. The flexible display screen is unfolded and folded along with the folding device. Folding assembly can be through the contained angle of two casings of adjustable slewing mechanism accurate control under the open mode for the contained angle of two casings suits with flexible display screen's design size, thereby is favorable to reducing the risk that flexible display screen takes place to damage because of dragging of folding device, improves flexible display screen's reliability, also is favorable to promoting the visual experience of user when using simultaneously.

The electronic device can be a foldable electronic product such as a mobile phone, a tablet computer, a notebook computer and a wearable device, and the wearable device can be an intelligent watch and an intelligent bracelet. In the embodiment of the present application, an electronic device is described as an example.

Referring to fig. 1 to fig. 3 together, fig. 1 is a schematic structural diagram of an electronic device 100 in an open state according to an embodiment of the present disclosure, fig. 2 is a schematic structural diagram of the electronic device 100 in an intermediate state shown in fig. 1, and fig. 3 is a schematic structural diagram of the electronic device 100 in a closed state shown in fig. 1.

In some embodiments, the electronic device 100 may include a folding device 10 and a flexible display 20, the flexible display 20 being mounted to the folding device 10. The flexible display screen 20 is used for displaying images. As shown in fig. 1, the folding device 10 may be unfolded to an open state; as shown in fig. 3, the folding device 10 may also be folded to a closed position; as shown in fig. 2, the folding device 10 may also be unfolded or folded to an intermediate state, which may be any state between the open state and the closed state. The flexible display 20 moves along with the folding device 10, and the flexible display 20 can be unfolded or folded by the folding device 10, so that the whole electronic device 100 is unfolded to the open state or folded to the closed state. In the present embodiment, when the electronic device 100 is in the closed state, the flexible display 20 is located inside the folding apparatus 10, and the electronic device 100 is a folding device with a folded screen. It is understood that in other embodiments, the flexible display 20 may be located outside the folding device 10 when the electronic device 100 is in the closed state.

The folding device 10 may include a first housing 1, a second housing 2, and a folding assembly 3, the folding assembly 3 connects the first housing 1 and the second housing 2, and the first housing 1 and the second housing 2 can be relatively unfolded to an open state or relatively folded to a closed state by movement of the folding assembly 3. As shown in fig. 1, the first housing 1 and the second housing 2 can be relatively unfolded to an open state, so that the folding assembly 3, the folding device 10 and the electronic device 100 are all in the open state, and the flexible display 20 is unfolded following the folding device 10. For example, when the folding device 10 is in the unfolded state, the included angle between the first casing 1 and the second casing 2 may be 180 °, and the flexible display 20 is in the flat state. As shown in fig. 3, the first housing 1 and the second housing 2 can be folded relatively to a closed state, so that the folding assembly 3, the folding device 10, and the electronic apparatus 100 are all in the closed state, and the flexible display 20 is folded along with the folding device 10. For example, when the folding device 10 is in the closed state, the flexible display 20 may be located between the first casing 1 and the second casing 2, that is, the flexible display 20 may be located inside the folding device 10 and wrapped by the folding device 10. It is understood that the included angle between the first casing 1 and the second casing 2 may be approximately 0 ° when the first casing 1 and the second casing 2 are in the closed state. As shown in fig. 2, the first housing 1 and the second housing 2 may also be relatively unfolded or relatively folded to an intermediate state, so that the folding assembly 3, the folding device 10, and the electronic apparatus 100 are all in the intermediate state. The intermediate state may be any state between the open state and the closed state, and the flexible display 20 may be changed accordingly.

In this embodiment, the flexible display 20 can be unfolded or folded with the folding device 10. When the electronic device 100 is in the open state, the flexible display screen 20 is in the flat state, and the flexible display screen 20 can perform full-screen display, so that the electronic device 100 has a larger display area, and the viewing experience and the operating experience of a user are improved. When the electronic device 100 is in the closed state, the electronic device 100 has a small planar size, and is convenient for a user to carry and store.

Illustratively, as shown in fig. 1, when the folding device 10 is in the unfolded state, the first housing 1 is spliced with the second housing 2. It should be noted that the splicing of the first casing 1 and the second casing 2 may include that the first casing 1 and the second casing 2 partially or completely abut against each other, or may include a case that a small gap exists between the first casing 1 and the second casing 2. In this embodiment, the first housing 1 and the second housing 2 are spliced to limit the relative unfolding angle of the first housing 1 and the second housing 2 to a certain extent, so as to realize the stop of the unfolding action of the folding device 10 and prevent the electronic device 100 from being over-folded during the unfolding process, thereby ensuring that the flexible display screen 20 is in the flat state and enabling the user to have the maximum width size during use. Meanwhile, the stress of the flexible display screen 20 can be reduced, and the reliability of the flexible display screen 20 and the electronic device 100 can be improved.

Illustratively, as shown in fig. 3, when the folding device 10 is in the closed state, the first housing 1 and the second housing 2 can be completely closed. It should be noted that, when the first casing 1 and the second casing 2 are folded, a part or all of the first casing 1 and the second casing 2 may abut against each other, and a small gap may exist between the first casing 1 and the second casing 2. In this embodiment, only a space for accommodating the flexible display screen 20 is left in the middle between the first casing 1 and the second casing 2, and no large gap exists at the edge, so as to improve the beautification degree of the casing and the electronic device 100, and prevent foreign objects outside the electronic device 100 from entering the electronic device 100 in the closed state, thereby improving the reliability of the electronic device 100.

Illustratively, as shown in fig. 2, when the folding device 10 is in the intermediate state, the first casing 1 and the second casing 2 form an included angle, and the intermediate state may be any state between the open state and the closed state, so as to meet the viewing requirements of users for different viewing angles.

In some embodiments, the electronic device 100 may further include a plurality of components (not shown in the drawings), the plurality of components are mainly received inside the first casing 1 and the second casing 2, and some components may also be at least partially mounted on the folding assembly 3, which is not limited in this embodiment. The components of the electronic device 100 may include, but are not limited to, a processor, an internal processor, an external storage interface, a Universal Serial Bus (USB) interface, a charge management module, a power management module, a battery, an antenna, a communication module, a camera module, an audio module, a speaker, a microphone, an earphone interface, a sensor module, a Subscriber Identification Module (SIM) card interface, one or more hard or flexible circuit boards, and so forth. Where electronic device 100 may have more or fewer components than described above, two or more components may be combined, or a different configuration of components may be provided. The embodiment of the present application does not specifically limit the number, types, positions, and the like of the modules of the electronic device 100.

In some embodiments, the flexible display screen 20 may also integrate display functionality and touch sensing functionality. The display function of the flexible display screen 20 is used for displaying characters, images, videos and the like, and the touch sensing function of the flexible display screen 20 is used for detecting touch actions of a user so as to realize information interaction between human and machines. The flexible display 20 may be a Liquid Crystal Display (LCD) organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED) display, a mini organic light-emitting diode (mini-organic light-emitting diode) display, a mini light-emitting diode (mini-light-emitting diode) display, a mini organic light-emitting diode (mini-organic light-emitting diode) display, or a quantum dot light-emitting diode (QLED) display.

In this embodiment, as shown in fig. 1, the flexible display 20 may include a first portion 201, a second portion 202, and a third portion 203, and the first portion 201, the third portion 203, and the second portion 202 are arranged in sequence. The flexible display screen 20 is a first part 201 corresponding to the first housing 1, and the first part 201 can be fixed to the first housing 1; the corresponding part of the flexible display screen 20 and the second casing 2 is a second part 202, and the second part 202 can be fixed on the second casing 2; the portion of the flexible display 20 corresponding to the folding assembly 3 is the third portion 203. In the process of relatively unfolding or relatively folding the first casing 1 and the second casing 2, the first casing 1 drives the first part 201 to rotate, the second casing 2 drives the second part 202 to rotate, and the third part 203 is deformed under the drive of the first part 201, the second part 202 and the folding device 10. When the flexible display screen 20 is in the flat state, the first portion 201, the third portion 203, and the second portion 202 are all located on the same plane. When the flexible display screen 20 is in the closed state, the first portion 201 and the second portion 202 are disposed opposite to each other, and the two portions may partially abut against each other, completely abut against each other, or have a small gap, so that the flexible display screen 20 is U-shaped as a whole.

It is understood that, in the present embodiment, the electronic device 100 is illustrated as a two-fold structure, that is, the electronic device 100 includes two shells that can be folded relatively. In other embodiments, the electronic device 100 may also be a tri-fold or tri-fold structure, that is, the electronic device 100 may include three or more housings that are folded relatively, and any two adjacent housings are connected by the folding assembly 3. When the electronic device 100 is a triple-fold or triple-fold structure, the structure of the electronic device 100 may be adaptively designed according to the description of the two structures in this embodiment, which is not described herein again.

Referring to fig. 4, fig. 4 is a partially exploded view of the electronic device 100 shown in fig. 1.

In some embodiments, the first housing 1 comprises a support surface 11 for carrying the flexible display screen 20 and the second housing 2 comprises a support surface 21 for carrying the flexible display screen 20. Illustratively, the first portion 201 of the flexible display 20 may be adhered to the supporting surface 11 of the first housing 1 by a glue layer, and the second portion 202 of the flexible display 20 may be adhered to the supporting surface 21 of the second housing 2 by a glue layer. The adhesive layer for bonding can be a whole adhesive layer for connection, a point-cut adhesive layer or an adhesive layer with a hollow area, and the specific scheme of the adhesive layer is not strictly limited in the embodiment of the application.

It should be noted that, in the present application, an included angle between the supporting surface 11 of the first casing 1 and the supporting surface 21 of the second casing 2 is an included angle between the first casing 1 and the second casing 2. When the electronic device 100 is in the open state, the angle between the supporting surface 11 of the first casing 1 and the supporting surface 21 of the second casing 2 may be 180 °. In the embodiment of the present application, specific shapes of the supporting surface 11 of the first casing 1 and the supporting surface 21 of the second casing 2 are not limited strictly, for example, the supporting surface 11 of the first casing 1 may be provided with one or more notches, recesses, protrusions, etc., and the supporting surface 21 of the second casing 2 is provided with one or more notches, recesses, protrusions, etc.

The following illustrates the implementation of the folding assembly 3.

Referring to fig. 4 and 5, fig. 5 is a schematic view of a partially exploded structure of the folding assembly 3 shown in fig. 4.

In some embodiments, the folding assembly 3 may include a spindle 31, a plurality of connection assemblies (32, 33, 34), a first support plate 35, and a second support plate 36.

Illustratively, a plurality of connecting assemblies (32, 33, 34) are each connected to the main shaft 31, and a plurality of connecting assemblies (32, 33, 34) are each movable and are each capable of being unfolded or folded relative to the main shaft 31. The plurality of connecting members (32, 33, 34) are also connected between the first casing 1 and the second casing 2 (see fig. 4), and when the plurality of connecting members (32, 33, 34) move relative to the main shaft 31, the first casing 1 and the second casing 2 also move, so as to realize the relative movement between the first casing 1 and the second casing 2.

Wherein the first support plate 35 and the second support plate 36 are each connected with a plurality of connecting assemblies (32, 33, 34). The first support plate 35 and the second support plate 36 are movable with a plurality of connecting members (32, 33, 34) to achieve relative expansion and relative folding. When the first housing 1 and the second housing 2 are in the open state, the first support plate 35 and the second support plate 36 are respectively located at two sides of the main shaft 31. The first support plate 35 comprises a first support surface 351 arranged facing the flexible display 20 and the second support plate 36 comprises a second support surface 361 arranged facing the flexible display 20. The main shaft 31 includes a main supporting surface 3111 disposed facing the flexible display 20. The first support surface 351, the second support surface 361 and the main support surface 3111 of the main shaft 31 cooperate to support the third portion 203 of the flexible display 20 in the open position, so that the flexible display 20 in the open position is more flat. The third portion 203 of the flexible display screen 20 is not easily recessed when pressed and touched by a user, which is beneficial to improving the reliability of the flexible display screen 20.

In the embodiment of the present application, as shown in fig. 5, the two ends close to the main shaft 31 are defined as a top and a bottom, respectively, the main shaft 31 has an extending direction, a thickness direction and a width direction, the extending direction of the main shaft 31 is defined as a direction from the bottom of the main shaft 31 to the top of the main shaft 31, the thickness direction of the main shaft 31 is perpendicular to the extending direction of the main shaft 31 and perpendicular to the main supporting surface 3111 of the main shaft 31, and the width direction of the main shaft 31 is perpendicular to the extending direction of the main shaft 31 and perpendicular to the thickness direction of the main shaft 31. In fig. 5, for the sake of simplicity, the extending direction of the spindle 31 is shown as "extending direction", the thickness direction "is shown as the thickness direction of the spindle 31, and the width direction" is shown as the width direction of the spindle 31.

Referring to fig. 5 in combination with fig. 6, fig. 6 is a partially exploded view of the folding assembly 3 shown in fig. 5.

As an example, the number of connecting assemblies of the folding assembly 3 may be three, respectively the bottom connecting assembly 32, the middle connecting assembly 33 and the top connecting assembly 34. The bottom joint assembly 32, the middle joint assembly 33, and the top joint assembly 34 are spaced apart in the extending direction of the main shaft 31. The coordinated movement of the connecting components (32, 33, 34) makes the movement of the first shell 1 and the second shell 2 during the relative unfolding or folding process more smooth and reliable.

It is understood that in other embodiments, the number of connecting components may be smaller or larger, and the connecting components may be split or combined. The structure of each connecting assembly may be the same or slightly different, and this is not strictly limited in this application. Hereinafter, mainly described with reference to the bottom connection assembly 32, both the middle connection assembly 33 and the top connection assembly 34 may be designed with reference to the bottom connection assembly 32.

In some embodiments, the main shaft 31 may include a main inner shaft 311 and a plurality of shrouds (312, 313, 314). The main inner shaft 311 may be a continuous structural member, and the extending direction of the main inner shaft 311 corresponds to the extending direction of the main shaft 31. The plurality of covers (312, 313, 314) are provided at intervals along the extending direction of the main shaft 31, and are all fixedly connected to the main inner shaft 311. For example, a plurality of shells (312, 313, 314) may be secured to the main inner shaft 311 by a plurality of fasteners 315. The plurality of fasteners 315 may be, but are not limited to, screws, bolts, rivets, etc. In this embodiment, the plurality of shells (312, 313, 314) may include a bottom shell 312, a middle shell 313, and a top shell 314. The bottom cover 312 is located at the bottom of the main inner shaft 311, and forms a bottom installation space with the main inner shaft 311; the middle cover 313 is positioned in the middle of the main inner shaft 311, and forms a middle mounting space with the main inner shaft 311; top cover 314 is located on top of main inner shaft 311 and forms a top mounting space with main inner shaft 311. A plurality of connecting components (32, 33, 34) are correspondingly arranged in the installation spaces. For example, in the present embodiment, the bottom connection assembly 32 is installed at the bottom installation space, the middle connection assembly 33 is installed at the middle installation space, and the top connection assembly 34 is installed at the top installation space. It can be understood that the number and the structure of the plurality of covers (312, 313, 314) are corresponding to the plurality of connecting components (32, 33, 34).

For example, bottom shell 312 may have a generally concave middle portion and a raised two-sided shell configuration. The surface of bottom cover 312 facing main inner shaft 311 may be provided with a plurality of mating structures for mating with main inner shaft 311 to form a bottom mounting space. The plurality of mating structures may include grooves, openings, protrusions, indentations, and the like. The middle cover 313 and the top cover 314 may be designed with reference to the bottom cover 312, and the middle cover 313 and the top cover 314 are not described in detail in this embodiment of the application.

Illustratively, a side of the main inner shaft 311 facing away from the plurality of housings (312, 313, 314) forms a main support surface 3111, and the main support surface 3111 can provide a relatively flat support environment in the open state. It will be appreciated that the main bearing surface 3111 of the main inner shaft 311 is also the main bearing surface 3111 of the main shaft 31. Wherein the main supporting surface 3111 can be a plane, the main supporting surface 3111 in the plane state can directly provide a flat supporting environment for the third portion 203 of the flexible display screen 20 in the open state. In other embodiments, the main supporting surface 3111 may be a curved surface or a plane surface with multiple connected sections, and is used to support the third portion 203 of the flexible display 20 of the electronic device 100 in the open state.

Referring to fig. 7 and 8 together, fig. 7 is a schematic structural view of the bottom connecting member 32 shown in fig. 6, and fig. 8 is a schematic partial exploded structural view of the bottom connecting member 32 shown in fig. 7. The bottom connecting member 32 in fig. 7 is formed by turning the bottom connecting member 32 in fig. 6 right and left.

In some embodiments, the bottom connecting assembly 32 may include a first fixed frame 321, a first swing arm 322, a first rotating arm 323, a second fixed frame 324, a second swing arm 325, a second rotating arm 326, a stop adjusting assembly 327, a synchronizing assembly 328, and a damping assembly 329. The bottom attachment assembly 32 may also include a plurality of shafts (340, 350, 360, 370), the plurality of shafts (340, 350, 360, 370) for mating with other components of the bottom attachment assembly 32 to effect a connection between the components. The first swing arm 322, the second swing arm 325, the stop adjusting assembly 327, the synchronizing assembly 328 and the damping assembly 329 can be assembled into the modular adjustable rotating mechanism 310, so as to simplify the assembly process of the folding assembly 3 and the electronic device 100.

The first fixing frame 321 is used for fixedly connecting the first casing 1, and is also used for connecting with a plurality of components of the bottom connecting assembly 32 and the first supporting plate 35. The first fixing frame 321 may include a plurality of fitting structures, including, for example, a structure fitting with the first casing 1, a structure fitting with the first swing arm 322, a structure fitting with the first rotation arm 323, and a structure fitting with the first support plate 35. For example, the first fixing frame 321 includes a first sliding portion 3211 and a first rotating portion 3212, the first sliding portion 3211 may be provided with a sliding groove 3213, and the first rotating portion 3212 may be provided with a rotating shaft hole 3214.

The second fixing frame 324 is used for fixedly connecting the second housing 2, and is also used for connecting with a plurality of components of the bottom connecting assembly 32 and the second supporting plate 36. The second fixing frame 324 may include a plurality of engaging structures, including, for example, a structure engaging with the second housing 2, a structure engaging with the second swing arm 325, a structure engaging with the second rotating arm 326, and a structure engaging with the second support plate 36. Illustratively, the second fixing frame 324 includes a second sliding portion 3241 and a second rotating portion 3242, the second sliding portion 3241 may be provided with a sliding groove 3243, and the second rotating portion 3242 may be provided with a rotating shaft hole 3244.

Among other things, the first swing arm 322 may include a first end 3221 and a second end 3222. The first end 3221 of the first swing arm 322 may be a rotating end, and the second end 3222 of the first swing arm 322 may be a sliding end. A second end 3222 of the first swing arm 322 may be mounted to the first sliding portion 3211 to slidably connect with the first fixing frame 321. The second end 3222 of the first swing arm 322 may include a slider, a sliding plate, or a sliding rail, so as to cooperate with the sliding slot 3213 of the first sliding portion 3211 to implement sliding connection. In other embodiments, the second end 3222 of the first swing arm 322 is provided with a sliding groove, the first sliding portion 3211 is provided with a slider, a sliding plate, or a sliding rail, and the like, and the second end 3222 of the first swing arm 322 and the first sliding portion 3211 can still realize a sliding connection.

Wherein the second swing arm 325 can include a first end 3251 and a second end 3252. The first end 3251 of the second swing arm 325 can be a rotating end and the second end 3252 of the second swing arm 325 can be a sliding end. A second end 3252 of the second swing arm 325 can be mounted to a second slide 3241 for slidably coupling with the second mount 324. The second end portion 3252 of the second swing arm 325 may include a slider, a sliding plate, or a sliding rail, so as to cooperate with the sliding groove 3243 of the second sliding portion 3241 to realize a sliding connection. In other embodiments, the second end portion 3252 of the second swing arm 325 is provided with a sliding slot, the second sliding portion 3241 is provided with a sliding block, a sliding plate, or a sliding rail, and the like, and the second end portion 3252 of the second swing arm 325 and the second sliding portion 3241 can still realize a sliding connection.

The stopping position adjusting assembly 327 is connected to the first end 3221 of the first swing arm 322 and the first end 3251 of the second swing arm 325, and is used for stopping the unfolding positions of the first swing arm 322 and the second swing arm 325. The structure of the stop adjusting assembly 327 is described later by embodiments, and is not expanded here.

Wherein the synchronization assembly 328 connects the first end 3221 of the first swing arm 322 and the first end 3251 of the second swing arm 325 such that the movements of the first swing arm 322 and the second swing arm 325 are synchronized, e.g., synchronously rotated toward each other to achieve folding or synchronously rotated away from each other to achieve unfolding. The implementation structure of the synchronization component 328 is described later by way of example and is not expanded herein.

Wherein the damping assembly 329 couples the first end 3221 of the first swing arm 322 and the first end 3251 of the second swing arm 325 to provide a damping force during the relative movement of the first swing arm 322 and the second swing arm 325. The implementation of the damping assembly 329 will be described later by way of example and will not be expanded herein.

Among other things, the first rotation arm 323 may include a first end portion 3231 and a second end portion 3232. The first end portion 3231 of the first rotation arm 323 and the second end portion 3232 of the first rotation arm 323 may both be rotation ends. Wherein the first end portion 3231 of the first rotating arm 323 may include an arc-shaped arm. The second end portion 3232 of the first rotating arm 323 is rotatably connected to the first rotating portion 3212 to rotatably connect to the first fixing frame 321. For example, the second end portion 3232 of the first rotating arm 323 may be provided with a rotating shaft hole 3232a, and the rotating shaft 340 is inserted into the rotating shaft hole 3232a and the rotating shaft hole 3214 of the first rotating portion 3212.

Wherein the second rotating arm 326 may include a first end 3261 and a second end 3262. The first end portion 3261 of the second rotating arm 326 and the second end portion 3262 of the second rotating arm 326 may both be rotating ends. Wherein the first end portion 3261 of the second rotating arm 326 may comprise an arc-shaped arm. The second end portion 3262 of the second rotating arm 326 is rotatably connected to the second rotating portion 3242 to rotatably connect to the second fixing frame 324. For example, the second end portion 3262 of the second rotating arm 326 may be provided with a rotating shaft hole 3262a, and the rotating shaft 350 is inserted into the rotating shaft hole 3262a and the rotating shaft hole 3244 of the second rotating portion 3242.

Referring to fig. 7, 9 and 10, fig. 9 is a schematic view of a connection structure of the bottom connecting assembly 32 and the main shaft 31 shown in fig. 5 at another angle, and fig. 10 is a schematic view of a connection structure of the bottom connecting assembly 32 and the main inner shaft 311 shown in fig. 6.

In some embodiments, the bottom attachment assembly 32 may be mounted to the main shaft 31. Part of the structure of bottom attachment assembly 32 may be located inside main shaft 31, for example, between main inner shaft 311 and bottom housing 312, and another part of the structure of bottom attachment assembly 32 may be located outside main shaft 31.

The first end 3221 of the first swing arm 322 and the first end 3251 of the second swing arm 325 are both mounted in the main shaft 31, and the second end 3222 of the first swing arm 322 and the second end 3252 of the second swing arm 325 are both located outside the main shaft 31. The first end 3221 of the first swing arm 322 is rotatably connected to the main shaft 31, the first end 3251 of the second swing arm 325 is rotatably connected to the main shaft 31, and the second swing arm 325 and the first swing arm 322 can rotate relative to the main shaft 31 to unfold or fold relative to each other. The stop adjusting assembly 327, the synchronizing assembly 328 and the damping assembly 329 are all installed in the main shaft 31.

Illustratively, the first end portion 3231 of the first rotating arm 323 and the first end portion 3261 of the second rotating arm 326 are mounted within the main shaft 31, and the second end portion 3232 of the first rotating arm 323 and the second end portion 3262 of the second rotating arm 326 are located outside the main shaft 31. The first end portion 3231 of the first rotating arm 323 is rotatably connected to the main shaft 31, the second end portion 3262 of the second rotating arm 326 is rotatably connected to the main shaft 31, and the first rotating arm 323 and the second rotating arm 326 can rotate relative to the main shaft 31 to be unfolded or folded relative to each other.

The first end 3221 of the first swing arm 322 rotates around a first rotation axis (not shown) relative to the main shaft 31, the first end 3251 of the second swing arm 325 rotates around a second rotation axis (not shown) relative to the main shaft 31, the first end 3231 of the first swing arm 323 rotates around a third rotation axis (not shown) relative to the main shaft 31, and the first end 3261 of the second swing arm 326 rotates around a fourth rotation axis (not shown) relative to the main shaft 31. The first rotation axis, the second rotation axis, the third rotation axis and the fourth rotation axis are all parallel to the extending direction of the main shaft 31 and are not overlapped with each other.

In the electronic device 100, the first fixing frame 321 is fixedly connected to the first housing 1, the second fixing frame 324 is fixedly connected to the second housing 2, when the first housing 1 and the second housing 2 are relatively unfolded or folded, the first fixing frame 321 moves along with the first housing 1, the second fixing frame 324 moves along with the second housing 2, the first fixing frame 321 and the second fixing frame 324 rotate relatively, and the folding assembly 3 is unfolded or folded.

The first swing arm 322 is rotatably connected with the main shaft 31 and slidably connected with the first fixing frame 321 to form a connecting rod slider structure, and the first swing arm 323 is rotatably connected with the main shaft 31 and rotatably connected with the first fixing frame 321 to form a connecting rod structure; the second swing arm 325 is rotatably connected to the main shaft 31 and slidably connected to the second fixing frame 324 to form a link slider structure, and the second rotating arm 326 is rotatably connected to the main shaft 31 and rotatably connected to the second fixing frame 324 to form a link structure. Folding assembly 3 realizes folding assembly 3's relative expansion, relative folding process through connecting rod slider structure and connection structure, and its component part is small in quantity, cooperation relation and cooperation position are simple, and the component part is easily makeed and is assembled, is favorable to realizing the volume production. Moreover, since the main shaft 31 is linked with the first fixing frame 321 through the first swing arm 322 and the first rotating arm 323, and is linked with the second fixing frame 324 through the second swing arm 325 and the second rotating arm 326, the folding assembly 3 has better mechanical tensile strength and mechanical anti-extrusion capability.

When the first housing 1 and the second housing 2 rotate relatively to an open state, the first fixing frame 321 and the second fixing frame 324 also rotate relatively to the open state. Further, the first swing arm 322 and the second swing arm 325 are also rotated to the open state. At this time, the first end 3221 of the first swing arm 322 and the first end 3251 of the second swing arm 325 abut against the stop adjusting assembly 327, and the stop adjusting assembly 327 is used to prevent the relative rotation angle between the first swing arm 322 and the second swing arm 325 from exceeding the preset value, further prevent the relative rotation angle between the first fixing frame 321 and the second fixing frame 324 from exceeding the preset value, and prevent the relative rotation angle between the first casing 1 and the second casing 2 from exceeding the preset value. Therefore, the stopping of the stopping adjusting assembly 327 on the first swing arm 322 and the second swing arm 325 can prevent the first casing 1 and the second casing 2 from being over-folded when the electronic device 100 is in the open state, so as to prevent the flexible display screen 20 from being pulled by the first casing 1 and the second casing 2, so as to improve the reliability of the flexible display screen 20 and increase the service life of the flexible display screen 20. In addition, in the present application, due to the stop effect of the stop adjusting assembly 327, an included angle between the first casing 1 and the second casing 2 in the open state is equal to a preset value. For example, when the preset value is 180 °, the folding device 10 can provide a flat supporting environment for the flexible display 20, and the flatness of the flexible display 20 is good, which is beneficial to optimizing the overall light shadow of the electronic device 100.

In the foregoing embodiment, the synchronization assembly 328 is used to synchronize the movements of the first swing arm 322 and the second swing arm 325, so that the movements of the first casing 1 and the second casing 2 are synchronized, for example, synchronously rotating toward each other to achieve folding or synchronously rotating away from each other to achieve unfolding, so as to improve the user experience.

In the foregoing embodiment, the damping assembly 329 is mounted on the main shaft 31, and is disposed between the first swing arm 322 and the second swing arm 325, so as to realize a damping effect of the first swing arm 322 and the second swing arm 325, that is, a damping effect of the first casing 1 and the second casing 2 in the motion process, thereby providing a hand feeling of the electronic device 100 in the unfolding process and the folding process, and improving the use experience of the user. In other embodiments, the number of the damping assemblies 329 may also be two, and the damping assemblies are respectively disposed at the sliding connection between the first fixing frame 321 and the second end 3222 of the first swing arm 322 and the sliding connection between the second fixing frame 324 and the second end 3252 of the second swing arm 325, so as to achieve the damping effect on the first swing arm 322 and the second swing arm 325.

In other embodiments, the folding assembly 3 may not include the first and second rotating arms, but include the first and second connecting arms. The first end of the first connecting arm is rotatably connected with the main shaft, the second end of the first connecting arm is slidably connected with the first fixing frame, and the sliding direction of the second end of the first connecting arm relative to the first fixing frame is intersected with the sliding direction of the second end of the first swing arm relative to the first fixing frame. The first end part of the second connecting arm is rotatably connected with the main shaft, the second end part of the second connecting arm is connected with the second fixing frame in a sliding mode, and the sliding direction of the second end part of the second connecting arm relative to the second fixing frame is intersected with the sliding direction of the second end part of the second swing arm relative to the second fixing frame.

Referring again to fig. 7 and 8, the bottom connecting assembly 32 further includes a plurality of structures or components that cooperate with the first support plate 35 and the second support plate 36 (see fig. 5). For example, the first fixing frame 321 may further include a third rotating portion 3215 engaged with the first support plate 35, and the third rotating portion 3215 is rotatably connected to the first support plate 35. For example, the third rotating portion 3215 may include an arc-shaped slot to cooperate with an arc-shaped arm (not shown) of the first support plate 35 to form a virtual shaft rotating connection structure. The rotation shaft 360 may be inserted into a middle portion of the first rotation arm 323 and be engaged with the first support plate 35, for example, the rotation shaft 360 may be inserted into a sliding slot (not shown) of the first support plate 35, so that the first rotation arm 323 is slidably connected to the first support plate 35. Illustratively, the second fixing frame 324 may further include a fourth rotating portion 3245 engaged with the second supporting plate 36, and the fourth rotating portion 3245 is rotatably connected to the second supporting plate 36. For example, the fourth rotating portion 3245 may include an arc-shaped slot to cooperate with an arc-shaped arm (not shown) on the second support plate 36 to form a virtual axis rotating connection. The hinge 370 may be inserted into a middle portion of the second rotating arm 326 and engaged with the second supporting plate 36, for example, the hinge 370 may be inserted into a sliding slot (not shown) of the second supporting plate 36, so that the second rotating arm 326 is slidably connected to the second supporting plate 36.

Referring to fig. 11 to 13 in combination, fig. 11 is a schematic structural diagram of some embodiments of the adjustable rotation mechanism 310 shown in fig. 8, fig. 12 is an exploded schematic view of a part of the structure of the adjustable rotation mechanism 310 shown in fig. 11, and fig. 13 is an exploded schematic view of another part of the structure of the adjustable rotation mechanism 310 shown in fig. 11. The adjustable rotating mechanism 310 of this embodiment includes all or most of the technical features of the adjustable rotating mechanism 310, and the differences between the two are mainly described below, and the same contents between the two are not described again.

In some embodiments, the adjustable rotation mechanism 310 includes a first swing arm 322, a second swing arm 325, a stop adjustment assembly 327, a synchronization assembly 328, and a damping assembly 329, and the adjustable rotation mechanism 310 may be a modular structure. For convenience of description, the adjustable rotating mechanism 310 is defined to have a first direction X, a second direction Y perpendicular to the first direction X, and a third direction Z perpendicular to the first direction X and the second direction Y. Wherein the first swing arm 322 and the second swing arm 325 are arranged in the second direction Y.

For example, the stop adjusting assembly 327 may include a stop member 3271, a first fastening member (not shown), a first elastic member 3272, a second elastic member 3273, a limiting member 3274, and a second fastening member (not shown). Synchronizing assembly 328 may include a plurality of synchronizing gears, with the present embodiment being illustrated with two synchronizing gears, e.g., synchronizing assembly 328 includes a first synchronizing gear 3281 and a second synchronizing gear 3282. It will be appreciated that in other embodiments, the number of synchronizing gears may be greater, such as more than three. The damping assembly 329 may include a first stopper 3291, a second stopper 3292, a third stopper 3293, a fourth stopper 3294, a first elastic member 3295, a second elastic member 3296, a first rotation shaft 3297, a second rotation shaft 3298, a third rotation shaft 3299, and a fourth rotation shaft 32910. The first rotating shaft 3297, the second rotating shaft 3298, the third rotating shaft 3299 and the fourth rotating shaft 32910 can be inserted into other structures of the adjustable rotating mechanism 310 to assemble a modular structure.

Referring to fig. 14, fig. 14 is a schematic structural view of the first swing arm 322 and the second swing arm 325 shown in fig. 12.

In some embodiments, first swing arm 322 includes a first end 3221 and a second end 3222. A rotating shaft hole 3221a is formed at a first end 3221 of the first swing arm 322, and the rotating shaft hole 3221a penetrates through both ends of the first end 3221 of the first swing arm 322. Here, an axial direction of the rotation shaft hole 3221a of the first swing arm 322 may be parallel to the first direction X. Wherein the first end 3221 of the first swing arm 322 is further provided with a structure for engaging the synchronizing assembly 328 and the damping assembly 329. For example, the first end portion 3221 of the first swing arm 322 may include a plurality of first protrusions 3221b, a plurality of second protrusions 3221c, and a plurality of engaging teeth 3221d, wherein the plurality of first protrusions 3221b and the plurality of second protrusions 3221c are disposed at two ends of the first end portion 3221 of the first swing arm 322 back to back. The plurality of first protrusions 3221b are arranged in a ring shape and spaced apart from each other, and the plurality of first protrusions 3221b are disposed around the rotation shaft hole 3221a of the first end portion 3221 of the first swing arm 322; the plurality of second protrusions 3221c are annularly arranged and spaced apart from each other, and the plurality of second protrusions 3221c are disposed around the rotation shaft hole 3221a of the first end portion 3221 of the first swing arm 322. A plurality of engagement teeth 3221d may be located at a side of the first end 3221 of the first swing arm 322. Wherein the plurality of engaging teeth 3221d may be adjacent to the plurality of first protrusions 3221b and distal to the plurality of second protrusions 3221c.

The first end 3221 of the first swing arm 322 may further be provided with a first avoiding space 3221e, and the first avoiding space 3221e may be located in the middle of the first end 3221 of the first swing arm 322. The first avoiding space 3221e may communicate with the rotating shaft hole 3221a, so that a middle portion of the first end portion 3221 of the first swing arm 322 has a substantially C-shaped structure. The first swing arm 322 further includes a first stop end surface 3221f, and the first stop end surface 3221f forms one of the end surfaces of the C-shaped structure. The first swing arm 322 may further include a first avoiding end surface 3221g, and the first avoiding end surface 3221g may form the other end surface of the C-shaped structure. At this time, the first stop end surface 3221f and the first avoidance end surface 3221g are both part of the wall surface of the first avoidance space 3221e.

The first swing arm 322 may be an integrally formed structural member, so as to have higher structural strength. For example, the first swing arm 322 may be formed by a metal injection process or other processes, which are not limited in this application.

Illustratively, the second swing arm 325 can include a first end 3251 and a second end 3252. The first end portion 3251 of the second swing arm 325 is provided with a rotation shaft hole 3251a, and the rotation shaft hole 3251a penetrates both ends of the first end portion 3251 of the second swing arm 325. Wherein an axial direction of the rotation shaft hole 3251a of the second swing arm 325 may be parallel to the first direction X. Wherein the first end 3251 of the second swing arm 325 is further configured to engage the synchronizing assembly 328 and the damping assembly 329. For example, the first end portion 3251 of the second swing arm 325 may include a plurality of first protrusions 3251b, a plurality of second protrusions 3251c, and a plurality of engaging teeth 3251d, the plurality of first protrusions 3251b and the plurality of second protrusions 3251c being oppositely disposed at both ends of the second swing arm 325. The plurality of first protrusions 3251b are arranged in a ring shape and spaced apart from each other, and the plurality of first protrusions 3251b are disposed around the rotation shaft hole 3251a of the first end portion 3251 of the second swing arm 325; the plurality of second protrusions 3251c are arranged in a ring shape and spaced apart from each other, and the plurality of second protrusions 3251c are disposed around the rotation shaft hole 3251a of the first end portion 3251 of the second swing arm 325. A plurality of engagement teeth 3251d may flank the first end 3251 of the second swing arm 325. Wherein the plurality of engagement teeth 3251d can be proximate to the plurality of first projections 3251b and distal to the plurality of second projections 3251c.

For example, the first end portion 3251 of the second swing arm 325 may further be provided with a second avoidance space 3251e, and the second avoidance space 3251e is located at the middle of the first end portion 3251 of the second swing arm 325. The second escape space 3251e may communicate with the rotation shaft hole 3251a such that a middle portion of the first end portion 3251 of the second swing arm 325 has a substantially C-shaped configuration. The second swing arm 325 further includes a second stop end surface 3251f, and the second stop end surface 3251f forms one of the end surfaces of the C-shaped structure. The second swing arm 325 may further include a second escape end surface 3251g, and the second escape end surface 3251g may form the other end surface of the C-shaped structure. At this time, the second stopper end surface 3251f and the second relief end surface 3251g are both part of the wall surface of the second relief space 3251e.

The second swing arm 325 may be an integrally formed structural member to have a high structural strength. Illustratively, the second swing arm 325 may be formed by a metal injection process or other processes, which is not strictly limited in this application.

Referring to fig. 15A and 15B in combination, fig. 15A is a schematic structural diagram of the limiting element 3274 shown in fig. 12, and fig. 15B is a schematic structural diagram of the limiting element 3274 shown in fig. 15A at another angle. Fig. 15B is a schematic structural view of the limiting member 3274 shown in fig. 15A after being flipped left and right.

In some embodiments, the retaining member 3274 includes a first fixing portion 3274a, a second fixing portion 3274b and a third fixing portion 3274c fixed to each other, and the third fixing portion 3274c is connected between the first fixing portion 3274a and the second fixing portion 3274 b. In the embodiment of the present application, the component a is connected between the components B and C, which means that the component a is located between the components B and C and connects the components B and C. The first fixing portion 3274a, the third fixing portion 3274c and the second fixing portion 3274b may be arranged in the second direction Y. The limiting member 3274 may be an integrally formed structural member, so as to have high structural strength. For example, the stop 3274 may be formed from a metal material, by a metal injection process, or by other processes. In other embodiments, the stop 3274 can be made of plastic, molded by injection molding, or formed by other processes.

The first fixing portion 3274a is provided with a first spindle hole 3274d, the second fixing portion 3274b is provided with a second spindle hole 3274e, and an axial direction of the second spindle hole 3274e is parallel to an axial direction of the first spindle hole 3274 d. The first spindle hole 3274d and the second spindle hole 3274e are through holes, and both the axial direction of the first spindle hole 3274d and the axial direction of the second spindle hole 3274e are parallel to the first direction X.

The third fixing portion 3274c may have a third rotation shaft hole 3274f, a fourth rotation shaft hole 3274g, a first through hole 3274h, a first sinking groove 3274i, and a first groove 3274j. The axial direction of the third rotating shaft hole 3274f and the axial direction of the fourth rotating shaft hole 3274g are both parallel to the axial direction of the first rotating shaft hole 3274d, and the third rotating shaft hole 3274f and the fourth rotating shaft hole 3274g can be blind holes or through holes. An axial direction of the first through hole 3274h is perpendicular to an axial direction of the first spindle hole 3274d, wherein the axial direction of the first through hole 3274h may be parallel to the third direction Z. The first sinking groove 3274i communicates with the first through hole 3274h, and the first sinking groove 3274i and the first through hole 3274h are arranged in the third direction Z. The first groove 3274j is located on a side of the first through hole 3274h away from the third rotating shaft hole 3274f, the first groove 3274j communicates with the first through hole 3274h, and an extending direction of the first groove 3274j is parallel to the first direction X.

Illustratively, the limiting member 3274 has a limiting surface 3274k, and the limiting surface 3274k is located at one side of the limiting member 3274. The limiting surface 3274k is inclined with respect to the first direction X and inclined with respect to the third direction Z. The limiting surface 3274k may be disposed opposite to the first sinking groove 3274 i. The limiting surface 3274k may be a plane, and the limiting surface 3274k is parallel to the second direction Y. Illustratively, the limiting surface 3274k includes a first portion 3274m and a second portion 3274n that are coplanar, the first portion 3274m of the limiting surface 3274k is disposed on the first fixing portion 3274a, the first spindle hole 3274d extends through the first portion 3274m of the limiting surface 3274k, the second portion 3274n of the limiting surface 3274k is disposed on the second fixing portion 3274b, and the second spindle hole 3274e extends through the second portion 3274n of the limiting surface 3274k.

Illustratively, a first concave space 3274p is formed between the first fixing portion 3274a and the third fixing portion 3274c, and a second concave space 3274q is formed between the third fixing portion 3274c and the second fixing portion 3274 b.

Referring to fig. 16A and 16B in combination, fig. 16A is a schematic structural view of the stop element 3271 shown in fig. 12, and fig. 16B is a schematic structural view of the stop element 3271 shown in fig. 16A at another angle. Fig. 16B is a schematic structural view of the stopper 3271 shown in fig. 16A after being turned left and right.

In some embodiments, the stop member 3271 includes a first stop portion 3271a, a second stop portion 3271b and a mounting portion 3271c, and the first stop portion 3271a and the second stop portion 3271b are respectively fixed on two sides of the mounting portion 3271 c. The first stop portion 3271a, the mounting portion 3271c and the second stop portion 3271b may be arranged in the second direction Y. The stop part 3271 may be an integrally formed structural member to have high structural strength. For example, the stop 3271 may be formed from a metal material, by a metal injection process, or by other processes. In other embodiments, the stop 3274 can be made of plastic, molded by injection molding, or formed by other processes.

The mounting portion 3271c may have a second through hole 3271d, a second sinking groove 3271e, and a second groove 3271f. The second through hole 3271d may be a kidney-shaped hole, wherein an axial direction of the second through hole 3271d may be parallel to the third direction Z, and a length direction of the second through hole 3271d may be parallel to the first direction X. The hole wall of each waist-shaped hole comprises two straight sides and two arc sides, the straight sides are arranged oppositely, the arc sides are arranged oppositely, the length direction of each waist-shaped hole is the direction from one arc side to the other arc side, and the length direction of each waist-shaped hole is parallel to the straight sides. When a shaft is inserted into the second through hole 3271d, the shaft is inserted into the second through hole 3271d along the third direction Z, and the shaft can move relative to the mounting portion 3271c along the first direction X. The second sinking groove 3271e communicates with the second through hole 3271d, and both are arranged in the third direction Z. The second groove 3271f communicates with the second sinking groove 3271e.

The first stopper portion 3271a has a first adjusting hole 3271g. The first regulation hole 3271g may be a kidney-shaped hole, an axial direction of the first regulation hole 3271g may be parallel to the first direction X, and a length direction of the first regulation hole 3271g may be parallel to the third direction Z. When a rotating shaft is inserted into the first adjusting hole 3271g, the rotating shaft is inserted into the first adjusting hole 3271g along the first direction X, and the rotating shaft can move relative to the first stopping portion 3271a along the third direction Z.

The first stop portion 3271a has a first stop surface 3271h, and the first stop surface 3271h may be located on a side of the first stop portion 3271a away from the mounting portion 3271 c. The first stop surface 3271h is not parallel to the third direction Z, that is, the first stop surface 3271h intersects with the third direction Z, for example, the first stop surface 3271h may be a plane, and the first stop surface 3271h is perpendicular to the third direction Z, or forms an included angle with the third direction Z. In other embodiments, the first stop surface 3271h may also be a curved surface, which is not strictly limited in this application.

The second stopper portion 3271b has a second adjusting hole 3271i. The second regulation hole 3271i may be a kidney-shaped hole, an axial direction of the second regulation hole 3271i may be parallel to the first direction X, and a length direction of the second regulation hole 3271i may be parallel to the third direction Z. When a rotating shaft is inserted into the second adjusting hole 3271i, the rotating shaft is inserted into the second adjusting hole 3271i along the first direction X, and the rotating shaft can move relative to the second stopping portion 3271b along the third direction Z.

The second stop portion 3271b has a second stop surface 3271j, and the second stop surface 3271j may be located on a side of the second stop portion 3271b away from the mounting portion 3271 c. The second stop surface 3271j is not parallel to the third direction Z, that is, the second stop surface 3271j intersects with the third direction Z. For example, the second stop surface 3271j may be a plane, and the second stop surface 3271j is perpendicular to the third direction Z or forms an angle with the third direction Z. In other embodiments, the second stop surface 3271j may also be a curved surface, which is not strictly limited in the embodiments of the present application.

Illustratively, the stop 3271 can have an adjustment surface 3271k, and the adjustment surface 3271k can be located on a side of the stop 3271. The adjusting surface 3271k may be inclined with respect to the first direction X and inclined with respect to the third direction Z. The adjusting surface 3271k may be disposed opposite to the second sinking groove 3271e. The adjusting surface 3271k may be a plane, and the adjusting surface 3271k is parallel to the second direction Y. Illustratively, the adjustment surface 3271k includes a first portion 3271m and a second portion 3271n that are coplanar, the first portion 3271m of the adjustment surface 3271k is located at the first stop portion 3271a, the first adjustment hole 3271g extends through the first portion 3271m of the adjustment surface 3271k, the second portion 3271n of the adjustment surface 3271k is located at the second stop portion 3271b, and the second adjustment hole 3271i extends through the second portion 3271n of the adjustment surface 3271 k.

Illustratively, a third concave space 3271p is formed at a side of the mounting portion 3271c adjacent to the first stop portion 3271a, and a fourth concave space 3271q is formed at a side of the mounting portion 3271c adjacent to the second stop portion 3271 b. The bottom wall of the third recessed space 3271p forms a first escape surface 3271r of the stopper 3271, the bottom wall of the fourth recessed space 3271q forms a second escape surface 3271s of the stopper 3271, and the first escape surface 3271r and the second escape surface 3271s of the stopper 3271 are oriented in the same direction as the second sinking groove 3271e.

In some embodiments, the first resilient member 3272 may be a resilient pad, and the resilient member may be provided with a through hole. The elastic gasket can be made of metal materials, for example, the elastic gasket can be a spring washer, a plate spring and the like; alternatively, the elastic pad may be made of an elastic rubber material or the like. In other embodiments, the first resilient member 3272 can include a plurality of stacked members, for example, the first resilient member 3272 can include a spring washer and a flat washer stacked in a stacked arrangement, the flat washer can be a metal washer, a rubber washer, or the like. In other embodiments, the first resilient member 3272 can also be a spring. The embodiment of the present application is not limited to a specific implementation of the first elastic element 3272.

In some embodiments, the second resilient member 3273 can be a spring. In other embodiments, the second elastic element 3273 may also be an elastic rubber element, and the like, which is not strictly limited in this application.

Referring to fig. 12 again, in some embodiments, the first synchronous gear 3281 may include a gear and a rotating shaft, the rotating shaft is located at the middle of the gear, and two ends of the rotating shaft are protruded at two sides of the gear. The first synchronizing gear 3281 can be an integral structure, and can be fixed to the rotating shaft. Alternatively, the gear may be rotatably connected to the rotating shaft. For example, the second synchronizing gear 3282 may also include a gear and a rotating shaft, the rotating shaft is located at the middle of the gear, and two ends of the rotating shaft are protruded at two sides of the gear. The gear and the shaft may be fixedly connected, for example, the second synchronizing gear 3282 may be an integrally formed structural member. Alternatively, the gear may be rotatably connected to the rotating shaft.

In some embodiments, the first locking member 3291 can include a first locking plate 3291a and two first protrusion sets 3291b, and the two first protrusion sets 3291b are protrudingly fixed on the same side of the first locking plate 3291 a. The first blocking plate 3291a may be substantially plate-shaped. The first stopper plate 3291a has two first holes 3291c and two rotation holes 3291d, and the two rotation holes 3291d are located between the two first holes 3291 c. The first hole 3291c is a through hole, and the rotating hole 3291d may be a through hole or a blind hole. The two first bump groups 3291b are disposed corresponding to the two first holes 3291c, respectively. Each first bump group 3291b may include a plurality of first bumps, the plurality of first bumps are arranged in a ring shape and spaced from each other, the plurality of first bumps of the same first bump group 3291b are disposed around the corresponding first hole 3291c, and a first clamping groove is formed between two adjacent first bumps. The first blocking member 3291 can be an integrally formed structural member to have high structural strength.

Illustratively, the second detent 3292 includes a main body 3292a and two second protrusion sets 3292b, and the two second protrusion sets 3292b are protrudingly fixed on the same side of the main body 3292 a. The main body 3292a may include two locking portions 3292c and a connecting portion 3292d connecting the two locking portions 3292 c. The two positioning portions 3292c are disposed at an interval, each positioning portion 3292c has a second hole 3292e, and the second hole 3292e is a through hole. Two ends of the connecting portion 3292d are respectively connected with two blocking portions 3292c, and the middle of the connecting portion 3292d protrudes to one side to form an avoiding space on the other side. The two second bump groups 3292b are respectively fixed to the two blocking portions 3292c, and the two second bump groups 3292b are respectively disposed corresponding to the two second holes 3292 e. Each second bump group 3292b may include a plurality of second bumps, the second bumps are arranged in a ring shape and spaced from each other, the second bumps of the same second bump group 3292b are disposed around the corresponding second holes 3292e, and a second clamping groove is formed between two adjacent second bumps. The second locking member 3292 can be an integrally formed structural member, so as to have higher structural strength. In other embodiments, the main body 3292a may have other implementation structures, and the main body 3292a includes at least two second holes 3292e disposed at an interval.

Illustratively, the third card holder 3293 includes a first card slot 3293a and a second card slot 3293b that are spaced apart from each other, and the first card slot 3293a and the second card slot 3293b form an opening at one side of the third card holder 3293 so that other components can be inserted into the first card slot 3293a and the second card slot 3293b through the opening. The third clamping member 3293 may further include a third hole 3293c, and the third hole 3293c may be a blind hole or a through hole. The third retainer 3293 may be substantially plate-shaped. The third clamping member 3293 may be an integrally formed structural member, so as to have higher structural strength.

Illustratively, the fourth detent 3294 includes two fourth holes 3294a spaced apart from each other, and the fourth holes 3294a are through holes. The fourth detent 3294 further includes a fifth hole 3294b, and the fifth hole 3294b can be a through hole or a blind hole. Wherein the fifth bore 3294b can be located between the two fourth bores 3294 a. The fourth detent 3294 may be substantially plate-shaped. The fourth locking member 3294 may be an integrally formed structural member, so as to have higher structural strength.

Illustratively, the first elastic member 3295 may include two first springs 3295a. In other embodiments, the first elastic member 3295 may also be made of an elastic material such as elastic rubber, which is not limited in this application.

Illustratively, the second elastic member 3296 may include three second springs 3296a. In other embodiments, the second elastic member 3296 may also be made of elastic material such as elastic rubber, which is not strictly limited in this application.

Referring again to fig. 13, an exemplary first shaft 3297 can have a stop flange 3297a at one end thereof, the stop flange 3297a having an outer diameter greater than an outer diameter of a body portion 3297b of the first shaft 3297. The other end of first pivot 3297 is equipped with spacing draw-in groove 3297c, and the external surface that spacing draw-in groove 3297c is relative main part 3297b of first pivot 3297 contracts in, and the diameter of the groove diapire of spacing draw-in groove 3297c is less than the external diameter of main part 3297b of first pivot 3297. One end of the second rotating shaft 3298 is provided with a position-limiting flange 3298a, and the outer diameter of the position-limiting flange 3298a is larger than that of a main body portion 3298b of the second rotating shaft 3298. The other end of second pivot 3298 is equipped with spacing draw-in groove 3298c, and the surface that spacing draw-in groove 3298c is relative main part 3298b of second pivot 3298 contracts in, and the diameter of the groove diapire of spacing draw-in groove 3298c is less than the external diameter of main part 3298b of second pivot 3298. The third shaft 3299 has a position-limiting flange 3299a, and the outer diameter of the position-limiting flange 3299a is greater than the outer diameter of the main portion 3299b of the third shaft 3299.

As shown in fig. 11 and 12, in the adjustable rotating mechanism 310, the stopper 3271 and the stopper 3274 are arranged in the first direction X, and both are located between the first swing arm 322 and the second swing arm 325. The adjusting surface 3271k of the stopper 3271 faces the limiting surface 3274k of the limiting member 3274. The third concave space 3271p of the stopper 3271 can be communicated with the first concave space 3274p of the stopper 3274, and the two are communicated to form a common avoiding space for avoiding the first swing arm 322; the fourth concave space 3271q of the stopper 3271 can communicate with the second concave space 3274q of the stopper 3274, and both communicate to form a common avoidance space for avoiding the second swing arm 325.

The stop member 3271 and the limit member 3274 are further clamped in the first avoiding space 3221e of the first swing arm 322 to clamp the first end 3221 of the first swing arm 322; the stopper 3271 and the stopper 3274 are also engaged in the second escape space 3251e of the second swing arm 325 to engage with the first end portion 3251 of the second swing arm 325. Wherein the first elastic member 3272 is stacked on one side of the stopper 3271. The second elastic element 3273 is disposed on a side of the stop element 3271 opposite to the limiting element 3274.

The first and second synchronizing gears 3281 and 3282 of the synchronizing assembly 328 engage each other, with the first synchronizing gear 3281 engaging the first end 3221 of the first swing arm 322 and the second synchronizing gear 3282 engaging the first end 3251 of the second swing arm 325. At this point, the first end 3221 of the first swing arm 322 indirectly engages the first end 3251 of the second swing arm 325 via the synchronization assembly 328. The first synchronizing gear 3281 and the second synchronizing gear 3282 may be located on a side of the stopper 3274 facing away from the stopper 3271.

The first blocking member 3291 and the second blocking member 3292 are disposed at an interval, and the plurality of first bump groups 3291b of the first blocking member 3291 face the plurality of second bump groups 3292b of the second blocking member 3292. The first end portion 3221 of the first swing arm 322, the first end portion 3251 of the second swing arm 325, the stopper 3271, the limiting member 3274, the first synchronizing gear 3281 and the second synchronizing gear 3282 are all located between the first locking member 3291 and the second locking member 3292. The first protrusions 3221b of the first swing arm 322 are disposed toward the first detent 3291, the second protrusions 3221c of the first swing arm 322 are disposed toward the second detent 3292, the first protrusions 3221b of the second swing arm 325 are disposed toward the first detent 3291, and the second protrusions 3221c of the second swing arm 325 are disposed toward the second detent 3292. At this time, the first position-limiting member 3291 is located on a side of the synchronizing assembly 328 facing away from the position-limiting member 3274, and the second position-limiting member 3292 is located on a side of the position-stopping member 3271 facing away from the position-limiting member 3274.

Illustratively, the third detent member 3293 is located on a side of the first detent member 3291 facing away from the second detent member 3292, the fourth detent member 3294 is located on a side of the second detent member 3292 facing away from the first detent member 3291, the first elastic member 3295 is located between the second detent member 3292 and the fourth detent member 3294, and the second elastic member 3296 is located on a side of the third detent member 3293 facing away from the first detent member 3291.

The first rotating shaft 3297, the second rotating shaft 3298, the third rotating shaft 3299 and the fourth rotating shaft 32910 are inserted into the above components, so that the adjustable rotating mechanism 310 forms a modular structure. Specifically, the method comprises the following steps:

referring to fig. 11, 12 and 17, fig. 17 isbase:Sub>A schematic cross-sectional view of the adjustable rotating mechanism 310 shown in fig. 11 taken alongbase:Sub>A-base:Sub>A.

In some embodiments, the first rotating shaft 3297 is inserted in the fourth locking member 3294, the first elastic member 3295, the second locking member 3292, the first end 3221 of the first swing arm 322, the stopping member 3271, the limiting member 3274, the first locking member 3291, the third locking member 3293, and the second elastic member 3296 in sequence. The first rotating shaft 3297 passes through one of the fourth holes 3294a of the fourth locking member 3294, the inner space of one of the first springs 3295a of the first elastic member 3295, one of the second holes 3292e of the second locking member 3292, the rotating shaft hole 3221a of the first end portion 3221 of the first swing arm 322, the first adjusting hole 3271g of the first stopper portion 3271a of the stopper 3271, the first rotating shaft hole 3274d of the first fixing portion 3274a of the stopper 3274, one of the first holes 3291c of the first locking member 3291, the first engaging groove 3293a of the third locking member 3293, and the inner space of one of the second springs 3296a of the second elastic member 3296.

The adjustment surface 3271k of the stopper 3271 faces the stopper surface 3274k of the stopper 3274. The first portion 3271m of the adjusting surface 3271k faces the first portion 3274m of the limiting surface 3274k. The plurality of first protrusions 3221b of the first end portion 3221 of the first swing arm 322 are disposed corresponding to one of the first protrusion sets 3291b of the first locking member 3291, and the plurality of second protrusions 3221c of the first end portion 3221 of the first swing arm 322 are disposed corresponding to one of the second protrusion sets 3292b of the second locking member 3292. The first fixing portion 3274a of the stopper 3274 and the first stopper 3271a of the stopper 3271 are attached to the first escape space 3221e of the first swing arm 322.

The first spring 3295a is in a compressed state, the limiting flange 3297a of the first rotating shaft 3297 is located on a side of the fourth locking member 3294, which faces away from the second locking member 3292, and abuts against the fourth locking member 3294, the third locking member 3293 is at least partially locked in the limiting groove 3297c of the first rotating shaft 3297, and the third locking member 3293 abuts against a side wall of the limiting groove 3297c of the first rotating shaft 3297. Because one end of the first spring 3295a abuts against the fourth detent 3294, the fourth detent 3294 abuts against the limiting flange 3297a of the first rotating shaft 3297, meanwhile, the other end of the first spring 3295a abuts against the second detent 3292, the second detent 3292 abuts against the first end 3221 of the first swing arm 322, the first end 3221 of the first swing arm 322 abuts against the first detent 3291, the first detent 3291 abuts against the third detent 3293, the third detent 3293 abuts against a side wall of the limiting groove 3297c of the first rotating shaft 3297, and the first spring 3295a is disposed between the second detent 3292 and the fourth detent 3294 in a compressed state, so that the first detent 3291 and the second detent 3292 tend to approach each other. At this time, the first locking member 3291 and the second locking member 3292 both abut against the first end 3221 of the first swing arm 322.

In some states, the plurality of first protrusions 3221b of the first swing arm 322 and the plurality of first protrusions of one first protrusion group 3291b of the first locking member 3291 are staggered to form a locking structure, and the plurality of first protrusions 3221b are correspondingly locked in the plurality of first locking grooves of the first protrusion group 3291 b; the plurality of second protrusions 3221c of the first swing arm 322 and the plurality of second protrusions of one second protrusion group 3292b of the second locking member 3292 are staggered to form a locking structure, and the plurality of second protrusions 3221c are correspondingly locked in the plurality of second locking grooves of the second protrusion group 3292b.

Referring to fig. 11, 12 and 18, fig. 18 is a schematic cross-sectional view of the adjustable rotation mechanism 310 shown in fig. 11 taken along the line B-B.

In some embodiments, the second rotating shaft 3298 is inserted in the fourth locking member 3294, the first elastic member 3295, the second locking member 3292, the first end portion 3251 of the second swing arm 325, the stopping member 3271, the limiting member 3274, the first locking member 3291, the third locking member 3293, and the second elastic member 3296 in sequence. The second rotating shaft 3298 passes through the other fourth hole 3294a of the fourth locking member 3294, the inner space of the other first spring 3295a of the first elastic member 3295, the other second hole 3292e of the second locking member 3292, the rotating shaft hole 3251a of the first end portion 3251 of the second swing arm 325, the second adjusting hole 3271i of the second stopper portion 3271b of the stopper 3271, the second rotating shaft hole 3274e of the second fixing portion 3274b of the stopper 3274, the other first hole 3291c of the first locking member 3291, the second locking groove 3293b of the third locking member 3293, and the inner space of the other second spring 3296a of the second elastic member 3296.

The second portion 3271n of the adjusting surface 3271k of the stopper 3271 faces the second portion 3274n of the limiting surface 3274k of the limiting member 3274. The plurality of first protrusions 3251b of the first end portion 3251 of the second swing arm 325 are disposed corresponding to the other first protrusion group 3291b of the first locking member 3291, and the plurality of second protrusions 3251c of the first end portion 3251 of the second swing arm 325 are disposed corresponding to the other second protrusion group 3292b of the second locking member 3292. The second fixing portion 3274b of the stopper 3274 and the second stopper portion 3271b of the stopper 3271 are attached to the second escape space 3251e of the second swing arm 325.

The first spring 3295a is in a compressed state, the limiting flange 3298a of the second rotating shaft 3298 is located on a side of the fourth blocking element 3294, which faces away from the second blocking element 3292, and abuts against the fourth blocking element 3294, at least a portion of the third blocking element 3293 is clamped into the limiting clamping groove 3298c of the second rotating shaft 3298, and the third blocking element 3293 abuts against a side wall of the limiting clamping groove 3298c of the second rotating shaft 3298. Because one end of the first spring 3295a abuts against the fourth detent 3294, the fourth detent 3294 abuts against the limit flange 3298a of the second rotating shaft 3298, meanwhile, the other end of the first spring 3295a abuts against the second detent 3292, the second detent 3292 abuts against the first end 3251 of the second swing arm 325, the first end 3251 of the second swing arm 325 abuts against the first detent 3291, the first detent 3291 abuts against the third detent 3293, the third detent 3293 abuts against the side wall of the limit slot 3298c of the second rotating shaft 3298, and the first spring 3295a is disposed between the second detent 3292 and the fourth detent 3294 in a compressed state, so that the first detent 3291 and the second detent 3292 tend to approach each other. At this time, the first blocking member 3291 and the second blocking member 3292 both abut against the first end portion 3251 of the second swing arm 325.

In some states, the plurality of first protrusions 3221b of the second swing arm 325 and the plurality of first protrusions of another first protrusion group 3291b of the first locking member 3291 are staggered to form a locking structure, and the plurality of first protrusions 3221b are correspondingly locked in the plurality of first locking grooves of the first protrusion group 3291 b; the plurality of second protrusions 3221c of the second swing arm 325 and the plurality of second protrusions of the other second protrusion group 3292b of the second locking member 3292 are staggered to form a locking structure, and the plurality of second protrusions 3221c are correspondingly locked in the plurality of second locking grooves of the second protrusion group 3292b.

Referring to fig. 12, 17 and 18, in the adjustable rotating mechanism 310, the first elastic component 3295 is configured to generate an elastic force, so that the first end 3221 of the first swing arm 322 and the first end 3251 of the second swing arm 325 both abut against the first locking member 3291 and the second locking member 3292, the first protrusions 3221b of the first swing arm 322 and one of the first protrusion groups 3291b of the first locking member 3291 cooperate to form a locking structure, the second protrusions 3221c of the first swing arm 322 and one of the second protrusion groups 3292b of the second locking member 3292 cooperate to form a locking structure, the first protrusions 3221b of the second swing arm 325 and another of the first protrusion groups 3291b of the first locking member 3291 cooperate to form a locking structure, and the second protrusions 3221c of the second swing arm 325 and another of the second protrusion groups 3292 cooperate to form a locking structure.

The two first bump groups 3291b of the first locking element 3291 and the second bump group 3292b of the second locking element 3292 are disposed correspondingly. In the first bump group 3291b and the second bump group 3292b, the position of the first bump may face the position of the second bump, and the position of the first locking groove may face the position of the second locking groove. In other embodiments, the positions of the first protrusion and the second protrusion may also be staggered or present other positional relationships, and a person skilled in the art may adjust the positional relationship of the corresponding structural members according to design requirements, which is not strictly limited in this application.

Referring to fig. 12 and 18, in some embodiments, a rotating shaft of the first synchronous gear 3281 is inserted into the limiting member 3274 and the first locking member 3291, for example, the rotating shaft of the first synchronous gear 3281 can be inserted into the third rotating shaft hole 3274f of the limiting member 3274 and one rotating hole 3291d of the first locking member 3291, and the gear of the first synchronous gear 3281 is located between the limiting member 3274 and the first locking member 3291. At this time, the first synchronizing gear 3281 rotatably connects the stopper 3274 and the first stopper 3291. The rotating shaft of the second synchronizing gear 3282 is inserted into the limiting member 3274 and the first locking member 3291, for example, the rotating shaft of the second synchronizing gear 3282 can be inserted into the fourth rotating shaft hole 3274g of the limiting member 3274 and the other rotating hole 3291d of the first locking member 3291, and the gear of the second synchronizing gear 3282 is located between the limiting member 3274 and the first locking member 3291. At this time, the second synchronizing gear 3282 rotatably connects the stopper 3274 and the first stopper 3291.

Referring to fig. 11, 12 and 19, fig. 19 is a schematic cross-sectional view of the adjustable rotating mechanism 310 shown in fig. 11 taken along the line C-C.

In some embodiments, the second groove 3271f of the stop 3271 is disposed adjacent to the first groove 3274j of the stop 3274, and the two are disposed opposite to each other and communicate with each other. The stop member 3271 further has a third groove 3271t, the third groove 3271t may be located on the mounting portion 3271c of the stop member 3271, and the third groove 3271t is located on a side of the second sinking groove 3271e facing away from the second groove 3271f. The first elastic member 3272 is mounted in the second sinking groove 3271e of the stopper 3271. The through hole of the first elastic member 3272 is disposed to correspond to the second through hole 3271d of the stopper 3271, and both are communicated.

In some embodiments, the third shaft 3299 is inserted into the fourth engaging element 3294, the first resilient element 3272 and the stop element 3271. The third shaft 3299 may be located between the first shaft 3297 and the second shaft 3298. One end of the third shaft 3299 is inserted into the fifth hole 3294b of the fourth locking member 3294, the third shaft 3299 passes through the inner space of the second elastic member 3273, and the other end of the third shaft 3299 is inserted into the third groove 3271t of the stopper 3271. The second elastic member 3273 and the third shaft 3299 can be partially disposed in an escape space of the second locking member 3292 so as to pass through the second locking member 3292.

The position-limiting flange 3299a of the third shaft 3299 is located on a side of the second elastic element 3273 opposite to the position-stopping element 3271. The second elastic element 3273 is in a compressed state, one end of the second elastic element 3273 abuts against the limit flange 3299a of the third rotating shaft 3299, and the other end abuts against the stop element 3271. In the embodiment, the elastic force of the second elastic element 3273 makes the stopper 3271 have a tendency to approach the limiting element 3274, so that the adjusting surface 3271k of the stopper 3271 can more stably abut against the limiting surface 3274k of the limiting element 3274 (see fig. 17 and 18).

In some embodiments, the fourth spindle 32910 may be located between the first spindle 3297 and the second spindle 3298. The fourth rotation shaft 32910 is inserted into the third catching member 3293 and the second elastic member 3296, for example, one end of the fourth rotation shaft 32910 is inserted into the third hole 3293c of the third catching member 3293, and the fourth rotation shaft 32910 further passes through the inner space of one of the second springs 3296a of the second elastic member 3296.

Referring to fig. 17 to fig. 19 again, under the action of the elastic force of the first elastic component 3295 and the structure of each component, the whole adjustable rotating mechanism 310 forms a relatively modular whole, and the first swing arm 322 and the second swing arm 325 can rotate relatively.

For example, when the first swing arm 322 and the second swing arm 325 rotate relatively, for the clamping structure between the plurality of first protrusions 3221b and the corresponding first bump group 3291b at the first end 3221 of the first swing arm 322, the first protrusions 3221b may be separated from one of the first clamping grooves, cross over one first bump, and be clamped into another adjacent first clamping groove; for the clamping structure between the plurality of second protrusions 3221c of the first end portion 3221 of the first swing arm 322 and the corresponding second protrusion set 3292b, the second protrusions 3221c may be disengaged from one of the second clamping grooves, cross over one of the second protrusions, and be clamped into another adjacent second clamping groove. In the process, the first end 3221 of the first swing arm 322 pushes the first blocking element 3291 to move away from the limiting element 3274, and simultaneously pushes the second blocking element 3292 to move away from the limiting element 3271, so that the first elastic element 3295 is compressed, and a part of the damping force and the pushing force are generated. Similarly, when the first swing arm 322 and the second swing arm 325 rotate relatively, for the clamping structure between the plurality of first protrusions 3251b of the first end portion 3251 of the second swing arm 325 and the corresponding first bump group 3291b, the first protrusion 3251b may be separated from one of the first clamping grooves, cross over one first bump, and be clamped into another adjacent first clamping groove; for the snap-fit structure between the plurality of second protrusions 3251c of the first end portion 3251 of the second swing arm 325 and the corresponding second protrusion set 3292b, the second protrusions 3251c may be disengaged from one of the second snap-fit grooves, cross over one of the second protrusions, and snap into another adjacent second snap-fit groove. In this process, the first end portion 3251 of the second swing arm 325 pushes the first blocking member 3291 to move away from the limiting member 3274, and simultaneously pushes the second blocking member 3292 to move away from the stopping member 3271, so that the first elastic member 3295 is compressed to generate another part of damping force and pushing force.

In other embodiments, the damping assembly 329 can be provided without the third and

fourth detents

3293, 3294. For example, the damping component 329 includes a first blocking member 3291, a second blocking member 3292 and a first elastic member 3295, one end of the first elastic member 3295 facing away from the second blocking member 3292 can abut against the second blocking member 3292, and the other end abuts against the wall surface of the main inner shaft 311 directly. At this time, the first elastic member 3295 may still be in a compressed state, and the damping assembly 329 may still provide damping and pushing forces for the rotation of the first swing arm 322 and the second swing arm 325. It is understood that other implementations of damping assembly 329 are also possible, and the embodiment of the present application is not limited to the specific implementation of damping assembly 329.

In other embodiments, the first elastic component 3295 may also be located on a side of the first locking member 3291 facing away from the second locking member 3292, and an elastic force generated by the first elastic component 3295 can also make the first locking member 3291 and the second locking member 3292 approach each other, and the first end 3221 of the first swing arm 322 and the first end 3251 of the second swing arm 325 both support the first locking member 3291 and the second locking member 3292, and form a corresponding locking structure (see the foregoing embodiments, which is not described herein again). At this time, the structures and positions of the plurality of rotating shafts (340, 350, 360, 370), the third blocking member 3293 and the fourth blocking member 3294 of the adjustable rotating mechanism 310 are adaptively changed, for example, one end of the first elastic member 3295 abuts against the first blocking member 3291, the other end thereof may abut against another blocking member or the spindle 31, the first elastic member 3295 may also be in a compressed state, and the present application does not strictly limit the specific structures of the related structural members.

Illustratively, as shown in fig. 18, since synchronization assembly 328 engages first end 3221 of first swing arm 322 and first end 3251 of second swing arm 325, first and second synchronizing gears 3281 and 3282 rotate as first swing arm 322 and second swing arm 325 rotate relative to each other. In the present embodiment, the synchronization assembly 328 is provided to facilitate increasing the synchronization and stability when the first swing arm 322 and the second swing arm 325 rotate relatively. Of course, in other embodiments, the adjustable rotation mechanism 310 may not be provided with the synchronization assembly 328. When the adjustable rotation mechanism 310 is not provided with the synchronizing assembly 328, the first end 3221 of the first swing arm 322 may not be provided with the engaging teeth 3221d, and the first end 3251 of the second swing arm 325 may not be provided with the engaging teeth 3221d. The skilled person can select a suitable structural position and a suitable spatial arrangement to implement the gear structure for the synchronous rotation of the first housing 1 and the second housing 2 according to the structural design requirement.

Referring to fig. 20, fig. 20 is a schematic cross-sectional view of the adjustable rotation mechanism 310 shown in fig. 11, taken along the line D-D.

In some embodiments, the first swing arm 322 and the second swing arm 325 can rotate relatively to unfold to an open state or fold to a closed state.

When the first swing arm 322 and the second swing arm 325 are in the open state, the first stop end surface 3221f of the first swing arm 322 at least partially abuts against the first stop surface 3271h of the stop member 3271, the first avoidance end surface 3221g of the first swing arm 322 is spaced from the first avoidance surface 3271r of the stop member 3271, and an included angle between the first avoidance end surface 3221g and the first avoidance surface 3271r of the stop member 3271 reaches a maximum value. The second stop end surface 3251f of the second swing arm 325 and the second stop surface 3271j of the stop member 3271 at least partially abut against each other, the second avoidance end surface 3251g of the second swing arm 325 and the second avoidance surface 3271s of the stop member 3271 are arranged at intervals, and an included angle between the two surfaces reaches a maximum value.

During the relative folding of the first swing arm 322 and the second swing arm 325, the second end 3222 of the first swing arm 322 and the second end 3252 of the second swing arm 325 approach each other. When the first swing arm 322 rotates counterclockwise, the first stop end surface 3221f of the first swing arm 322 moves in a direction away from the first stop surface 3271h of the stop member 3271, the first avoidance end surface 3221g of the first swing arm 322 moves in a direction close to the first avoidance surface 3271r of the stop member 3271, and the first avoidance end surface 3221g of the first swing arm 322 can rotate into the third concave space 3271p of the stop member 3271 and the first concave space 3274p of the stopper 3274 (see fig. 12). When the second swing arm 325 rotates clockwise, the second stopper end surface 3251f of the second swing arm 325 moves in a direction away from the second stopper surface 3271j of the stopper 3271, the second escape end surface 3251g of the second swing arm 325 moves in a direction closer to the second escape surface 3271s of the stopper 3271, and the second escape end surface 3251g of the second swing arm 325 can turn into the fourth recessed space 3271q of the stopper 3271 and the second recessed space 3274q of the stopper 3274 (see fig. 12). It should be noted that, in the embodiment of the present application, the rotation directions of the first swing arm 322 and the second swing arm 325 are described according to the directions shown in the drawings, and the rotation directions of the two can be interchanged in the use of an actual product.

When the first swing arm 322 and the second swing arm 325 are in the closed state, an included angle between the first stop end surface 3221f of the first swing arm 322 and the first stop surface 3271h of the stop member 3271 reaches a maximum value. An included angle between the first avoiding end surface 3221g of the first swing arm 322 and the first avoiding surface 3271r of the stop member 3271 reaches a minimum value, and a gap may exist between the first avoiding end surface 3221g and the first avoiding surface 3271 r. An included angle between the second stop end surface 3251f of the second swing arm 325 and the second stop surface 3271j of the stop member 3271 reaches a maximum value. An included angle between the second avoiding end surface 3251g of the second swing arm 325 and the second avoiding surface 3271s of the stop member 3271 reaches a minimum value, and a gap may exist between the two.

During the relative expansion of the first swing arm 322 and the second swing arm 325, the second end 3222 of the first swing arm 322 and the second end 3252 of the second swing arm 325 are away from each other. When the first swing arm 322 rotates clockwise, the first stopper end surface 3221f of the first swing arm 322 moves in a direction approaching the first stopper surface 3271h of the stopper 3271, the first avoidance end surface 3221g of the first swing arm 322 moves in a direction away from the first avoidance surface 3271r of the stopper 3271, and the first avoidance end surface 3221g of the first swing arm 322 rotates away from the third concave space 3271p of the stopper 3271 and the first concave space 3274p of the stopper 3274 (see fig. 12). When the second swing arm 325 rotates counterclockwise, the second stopper end surface 3251f of the second swing arm 325 moves in a direction approaching the second stopper surface 3271j of the stopper 3271, the second escape end surface 3251g of the second swing arm 325 moves in a direction away from the second escape surface 3271s of the stopper 3271, and the second escape end surface 3251g of the second swing arm 325 rotates away from the fourth recessed space 3271q of the stopper 3271 and the second recessed space 3274q of the stopper 3274 (see fig. 12).

In the embodiment of the present application, by providing the stop matching structure between the first stop surface 3271h of the stop member 3271 and the first stop end surface 3221f of the first swing arm 322, and the stop matching structure between the second stop surface 3271j of the stop member 3271 and the second stop end surface 3251f of the second swing arm 325, when the first swing arm 322 and the second swing arm 325 are relatively unfolded to the open state, the first swing arm 322 and the second swing arm 325 are restricted from continuously rotating relatively, so that the included angle between the first swing arm 322 and the second swing arm 325 can be kept at the preset angle, and the excessive rotation phenomenon is avoided. In addition, by setting the relative position relationship between the first avoiding end surface 3221g of the first swing arm 322 and the first avoiding surface 3271r of the stop member 3271 and the relative position relationship between the second avoiding end surface 3251g of the second swing arm 325 and the second avoiding surface 3271s of the stop member 3271, the first swing arm 322 and the second swing arm 325 can be prevented from interfering with the stop member 3271 in the moving process, the normal operation of the whole folding assembly 3 is ensured, and the stability of the folding assembly 3 is high.

Referring to fig. 21A and 21B in combination, fig. 21A is a partial schematic structural view of the main inner shaft 311 shown in fig. 6 in some embodiments, and fig. 21B is a schematic structural view of the main inner shaft 311 shown in fig. 21A at another angle. The extending direction of the main inner shaft 311 is the same as the extending direction of the main shaft 31, the thickness direction of the main inner shaft 311 is the same as the thickness direction of the main shaft 31, and the width direction of the main inner shaft 311 is the same as the width direction of the main shaft 31, and the following description will be made based on the direction of the main shaft 31. In addition, for the sake of simplicity, in fig. 21A and the following drawings, the extending direction of the spindle 31 is indicated by "extending direction", the thickness direction "indicates the thickness direction of the spindle 31, and the width direction" indicates the width direction of the spindle 31.

In some embodiments, the main inner shaft 311 has a mounting space 3112, a first notch 3113, a second notch 3114, a plurality of mounting holes 3115 and a plurality of mounting grooves 3116. A plurality of ribs 3117 may be disposed on a bottom wall of the installation space 3112, and the ribs 3117 may be used to divide the installation space 3112 into a plurality of regions and also used as a limiting structure, so that an assembly structure of a structural member installed in the installation space 3112 and the main inner shaft 311 is more stable. The ribs 3117 may be arranged in the extending direction of the main shaft 31, and the plurality of ribs 3117 may be arranged at intervals in the width direction of the main shaft 31. The first notch 3113 and the second notch 3114 are spaced apart from each other in a width direction of the main shaft 31 and both communicate with the installation space 3112, and the first notch 3113 and the second notch 3114 may be respectively located at both sides of the main inner shaft 311. The plurality of mounting holes 3115 are located at one side of the mounting space 3112 and communicate with the mounting space 3112, and an axial direction of the mounting holes 3115 may be parallel to an extending direction of the spindle 31. The plurality of mounting holes 3115 are provided at intervals from each other in the width direction of the main shaft 31, and the plurality of mounting holes 3115 may be provided in one-to-one correspondence with a plurality of areas of the mounting space 3112. The mounting grooves 3116 are positioned at the other side of the mounting space 3112 and communicate with the mounting space 3112, and at this time, the mounting holes 3115, the mounting space 3112 and the mounting grooves 3116 are sequentially arranged in the extending direction of the spindle 31. Here, the plurality of mounting grooves 3116 are provided at intervals in the width direction of the main shaft 31, and the plurality of mounting grooves 3116 may be provided in one-to-one correspondence with a plurality of regions of the mounting space 3112.

Illustratively, the main inner shaft 311 includes a first boss 311a, a second boss 311b, and a connecting boss 311c between the first notch 3113 and the second notch 3114. The first bosses 311a and the second bosses 311b are arranged at intervals in the extending direction of the main shaft 31, the first bosses 311a are provided with first mounting holes 311d, and the second bosses 311b are provided with second mounting holes 311e. The connection boss 311c is located between the first boss 311a and the second boss 311b, and the connection boss 311c may extend in an extending direction of the main shaft 31. The connection boss 311c may connect the first boss 311a and the second boss 311b, so as to improve the overall structural strength of the first boss 311a, the connection boss 311c, and the second boss 311b.

Referring to fig. 21A to fig. 22, fig. 22 is an assembly structure diagram of the adjustable rotating mechanism 310 shown in fig. 11 and the main inner shaft 311 shown in fig. 21A.

In some embodiments, adjustable swivel mechanism 310 may be mounted to main inner shaft 311 of main shaft 31 via first and

second fasteners

3275, 3276 thereof. At this time, each component of the adjustable rotation mechanism 310 is mounted on the main shaft 31. Most of the structure of the adjustable rotating mechanism 310 is located in the installation space 3112 of the main inner shaft 311, the end of a part of the rotating shaft can be inserted into the installation hole 3115 and/or placed in the installation groove 3116, the first swing arm 322 is disposed corresponding to the first notch 3113, and the second swing arm 325 is disposed corresponding to the second notch 3114. The first direction X of the adjustable rotating mechanism 310 is the same as the extending direction of the main shaft 31, the second direction Y of the adjustable rotating mechanism 310 is the same as the thickness direction of the main shaft 31, and the third direction Z of the adjustable rotating mechanism 310 is the same as the thickness direction of the main shaft 31.

Referring to fig. 19, 23A and 23B in combination, fig. 23A is a schematic cross-sectional view of the structure shown in fig. 22 taken along the line E-E, and fig. 23B is a schematic partial structure view of the structure shown in fig. 23A.

In some embodiments, the retaining member 3274 is fixed to the main inner shaft 311 by a first fastener 3275, and the stop member 3271 is fixed to the main inner shaft 311 by a second fastener 3276. The first boss 311a of the main inner shaft 311 may be at least partially located in the first through hole 3274h of the limiting member 3274, the second boss 311b is at least partially located in the second sunken groove 3271e of the stopper 3271, and the connecting boss 311c is at least partially located in the first groove 3274j of the limiting member 3274 and the second groove 3271f of the stopper 3271. The bosses of the main inner shaft 311 can preposition the stopper 3274 and the stopper 3271, and contribute to improvement of structural stability after assembly.

One end of the first fastening member 3275 is connected to the third fixing portion 3274c of the limiting member 3274, and the other end is connected to the inner spindle 311, so that the limiting member 3274 is mounted on the spindle 31. For example, the first fastener 3275 can include a retaining end 3275a and a connecting end 3275b secured to a side of the retaining end 3275 a. The connecting end 3275b of the first fastener 3275 extends into the first mounting hole 311d of the first boss 311a and is fixedly connected with the first boss 311a; the limiting end 3275a of the first fastening member 3275 can be at least partially located in the first sinking groove 3274i and abut against the bottom wall of the first sinking groove 3274i, and the limiting end 3275a of the first fastening member 3275 presses the limiting member 3274 against the inner main shaft 311.

The connecting end 3275b of the first fastening member 3275 can be provided with an external thread (not shown), the hole wall of the first mounting hole 311d can be formed with an internal thread (not shown), and the connecting end 3275b of the first fastening member 3275 is in threaded connection with the first boss 311a, so as to realize the fixed connection between the first fastening member 3275 and the main inner shaft 311. In other embodiments, other fixing connection manners such as clamping may be adopted between the connection end 3275b of the first fastening member 3275 and the first boss 311a, which is not strictly limited in this embodiment of the present application. In other embodiments, the retaining member 3274 may not have the first sinking groove 3274i, and the retaining end 3275a of the first fastening member 3275 abuts against a surface of the retaining member 3274 facing away from the first boss 311 a.

One end of the second fastening member 3276 is connected to the mounting portion 3271c of the stopper 3271, and the other end is screwed to the main inner shaft 311, so as to mount the stopper 3271 to the main shaft 31. For example, the second fastener 3276 can include a retaining end 3276a and a connecting end 3276b secured to a side of the retaining end 3276 a. The connection end 3276b of the second fastening member 3276 extends into the second mounting hole 311e of the second boss 311b and is fixedly connected to the second boss 311b. The connecting end 3276b of the second fastening member 3276 may be provided with an external thread (not shown), the hole wall of the second mounting hole 311e may be formed with an internal thread (not shown), and the connecting end 3276b of the second fastening member 3276 is threadedly connected to the second boss 311b to realize the fixed connection between the second fastening member 3276 and the main inner shaft 311. In this embodiment, since the fixed connection between the second fastener 3276 and the main inner shaft 311 is a threaded connection, the relative position between the second fastener 3276 and the main inner shaft 311 is adjustable.

The limiting end 3276a of the second fastening member 3276 is located on a side, facing away from the second boss 311b, of the mounting portion 3271c of the stop member 3271, the first elastic member 3272 abuts against between the mounting portion 3271c of the stop member 3271 and the main inner shaft 311, and the limiting end 3276a of the second fastening member 3276 and the first elastic member 3272 limit the mounting portion 3271c of the stop member 3271, so that the stop member 3271 is fixed relative to the main shaft 31.

The first elastic element 3272 may be disposed in the second sinking groove 3271e and between the mounting portion 3271c of the stop element 3271 and the top surface of the second boss 311b. In other embodiments, the first elastic member 3272 may be located outside the second sinking groove 3271e, and the first elastic member 3272 may be located between the mounting portion 3271c of the stopper 3271 and other structures of the main inner shaft 311, which is not limited in this embodiment. In other embodiments, the side of the mounting portion 3271c of the stop 3271 facing away from the main inner shaft 311 can be provided with a sunken groove, and the limiting end 3276a of the second fastening member 3276 can be at least partially positioned in the sunken groove.

Illustratively, two ends of the second elastic member 3273 respectively abut against the limiting flange 3299a of the third rotating shaft 3299 and the mounting portion 3271c of the stopping member 3271, and one end of the third rotating shaft 3299, which is far away from the second elastic member 3273, is mounted in one of the mounting grooves 3116 of the main inner shaft 311. The second elastic element 3273 is in a compressed state, and the elastic force generated by the second elastic element 3273 enables the third rotating shaft 3299 to abut against the inner main shaft 311, and the stop element 3271 tends to approach the stop element 3274, so that the stop element 3271 abuts against the stop element 3274. In other embodiments, the third rotating shaft 3299 may not be provided with the limiting flange 3299a, one end of the second elastic element 3273 away from the stop element 3271 may abut against the fourth stop element 3294 or the main inner shaft 311, and the second elastic element 3273 may also be in a compressed state to generate an elastic force, so that the stop element 3271 abuts against the limiting element 3274.

Referring to fig. 23A and 24 in combination, fig. 24 is an assembly structure diagram of the position limiting element 3274 and the position stopping element 3271 shown in fig. 22.

In this embodiment, the first elastic element 3272 applies a first acting force F1 to the stopper 3271, where the first acting force F1 is an elastic force of the first elastic element 3272, and the first acting force F1 is parallel to the thickness direction of the main shaft 31 and faces away from the main inner shaft 311; the limiting end 3276a of the second fastening member 3276 applies a second acting force F2 to the stop member 3271, and the second acting force F2 is parallel to the thickness direction of the main shaft 31 and faces the main inner shaft 311; the second elastic element 3273 applies a third acting force F3 to the stopper 3271, where the third acting force F3 is an elastic force of the second elastic element 3273, and the third acting force F3 is parallel to the extending direction of the main shaft 31 and faces the stopper 3274; the stopper 3274 applies a fourth urging force F4 to the stopper 3271, the fourth urging force F4 is a supporting force of the stopper 3274 to the stopper 3271, and the fourth urging force F4 is inclined with respect to the extending direction of the main shaft 31 and with respect to the thickness direction of the main shaft 31. In the electronic apparatus 100, the stopper 3271 is commonly restricted by a plurality of structural members, and the stopper 3271 is fixed to the main inner shaft 311.

Illustratively, the stopper surface 3274k is inclined with respect to the thickness direction of the main shaft 31 and inclined with respect to the extending direction of the main shaft 31. At this time, the stopper 3271 is stopped by the stopper surface 3274k in the thickness direction of the spindle 31 and the extending direction of the spindle 31, and the stopper 3274 is similarly inclined to the thickness direction of the spindle 31 and also inclined to the extending direction of the spindle 31 by the third acting force F3 applied to the stopper 3271 by the stopper surface 3274k.

For example, the adjusting surface 3271k may be parallel to the limiting surface 3274k and contact the limiting surface 3274k, and the adjusting surface 3271k is in surface contact with the contact surface, so that the contact area between the adjusting surface 3271k and the limiting surface 3274k is large, the abutting relationship is stable, and the limiting member 3274 can better limit the position of the position stopper 3271, so as to ensure that the relative position relationship between the position stopper 3271 and the main shaft 31 is stable.

Referring to fig. 23A, 25 and 26, fig. 25 is a schematic cross-sectional view of the structure shown in fig. 22 taken along F-F, and fig. 26 is a schematic cross-sectional view of the structure shown in fig. 22 taken along G-G.

In some embodiments, as shown in fig. 23A, one end of the fourth rotating shaft 32910 is installed in one of the installation holes 3115 of the main inner shaft 311, and two ends of the second spring 3296a sleeved on the fourth rotating shaft 32910 in the second elastic member 3296 respectively abut against the main inner shaft 311 and the third positioning member 3293. As shown in fig. 25, the first shaft 3297 has one end attached to the other attachment hole 3115 of the main inner shaft 311 and the other end attached to the other attachment groove 3116 of the main inner shaft 311. Two ends of a second spring 3296a of the second elastic member 3296, which is sleeved on the first rotating shaft 3297, respectively abut against the main inner shaft 311 and the third positioning member 3293. As shown in fig. 26, one end of the second rotating shaft 3298 is mounted to the other mounting hole 3115 of the main inner shaft 311, and the other end is mounted to the other mounting groove 3116 of the main inner shaft 311. Two ends of a second spring 3296a of the second elastic member 3296, which is sleeved on the second rotating shaft 3298, respectively abut against the main inner shaft 311 and the third clamping member 3293.

Under the elastic force of the plurality of second springs 3296a of the second elastic member 3296, the entire adjustable rotation mechanism 310 tends to move in a direction away from the mounting hole 3115 of the main inner shaft 311, a side of the adjustable rotation mechanism 310 away from the second elastic member 3296 abuts against the main inner shaft 311, for example, one end of the first rotation shaft 3297 away from the second elastic member 3296 and one end of the second rotation shaft 3298 away from the second elastic member 3296 may abut against the main inner shaft 311, and a relative positional relationship between the entire adjustable rotation mechanism 310 and the main inner shaft 311 is stable. In addition, since the limiting member 3274 is fixedly connected to the main inner shaft 311, under the elastic force of the second elastic member 3296, a friction surface is formed between the first end 3221 of the first swing arm 322 and the limiting member 3274, and a friction surface is formed between the first end 3251 of the second swing arm 325 and the limiting member 3274, when the first swing arm 322 and the second swing arm 325 rotate relatively, a friction torque is formed at the friction surface, and a damping force is generated, so that when a user rotates the first housing 1 and the second housing 2, the hand feeling is smooth, and the use experience is good.

In other embodiments, the adjustable rotation mechanism 310 may not include the second elastic member 3296, and the adjustable rotation mechanism 310 may achieve a stable relative position relationship with the main inner shaft 311 through other structures, and may also provide a damping force when the first swing arm 322 rotates relative to the second swing arm 325 through other structures, which is not limited in this embodiment of the present invention.

It is understood that, the connection structure between the plurality of rotating shafts (3297, 3298, 3299, 32910) and the main inner shaft 311 of the adjustable rotating mechanism 310 is an exemplary structure, and the connection between the plurality of rotating shafts (3297, 3298, 3299, 32910) and the main inner shaft 311 may be realized by other methods, which is not strictly limited in this embodiment of the present application.

For example, as shown in fig. 23A, 25 and 26, since the third fixing portion 3274c of the limiting member 3274 is fixedly connected to the main inner shaft 311 by the first fastening member 3275, the first rotating shaft 3297 is inserted into the first fixing portion 3274a of the limiting member 3274 and one mounting hole 3115 of the main inner shaft 311, and the second rotating shaft 3298 is inserted into the second fixing portion 3274b of the limiting member 3274 and the other mounting hole 3115 of the main inner shaft 311, the positions of the first rotating shaft 3297 and the second rotating shaft 3298 with respect to the main inner shaft 311 in the thickness direction of the main shaft 31 and the width direction of the main shaft 31 are fixed. Since the first rotating shaft 3297 is further inserted into the first end 3221 of the first swing arm 322, the first swing arm 322 can be rotatably connected with the main inner shaft 311 through the first rotating shaft 3297 to rotatably connect with the main shaft 31; since the second rotating shaft 3298 is further inserted into the first end portion 3251 of the second swing arm 325, the second swing arm 325 can be rotatably connected to the main inner shaft 311 through the second rotating shaft 3298 to rotatably connect the main shaft 31.

In this embodiment, since the limiting member 3274 is fixed to the main inner shaft 311, the first rotating shaft 3297 and the second rotating shaft 3298 are installed on the main inner shaft 311, the first rotating shaft 3297 is inserted into the first fixing portion 3274a and the first end 3221 of the first swing arm 322, and the second rotating shaft 3298 is inserted into the second fixing portion 3274b and the first end 3251 of the second swing arm 325, when the first swing arm 322 and the second swing arm 325 rotate relatively, the rotation is stable and not easy to shake, which is beneficial to improving the reliability of the folding assembly 3. In addition, the first fixing portion 3274a is also caught in the first end portion 3221 of the first swing arm 322, and the second fixing portion 3274b is also caught in the first end portion 3251 of the second swing arm 325, which contributes to further improving the stability of the turning motion of the first swing arm 322 and the second swing arm 325.

In addition, as shown in fig. 25 and 26, since the first rotating shaft 3297 further passes through the first adjusting hole 3271g of the first stop portion 3271a of the stop member 3271, the first stop portion 3271a of the stop member 3271 abuts against the first fixing portion 3274a of the stop member 3274, the second rotating shaft 3298 further passes through the second adjusting hole 3271i of the second stop portion 3271b of the stop member 3271, and the second stop portion 3271b of the stop member 3271 abuts against the second fixing portion 3274b of the stop member 3274, the positions of the first stop portion 3271a and the second stop portion 3271b of the stop member 3271 are relatively stable, the risk of deformation is relatively small, and the stop reliability can be improved.

For example, as shown in fig. 25 and 26, since the first portion 3274m of the limiting surface 3274k is located on the first fixing portion 3274a of the limiting member 3274, the first fixing portion 3274a is sleeved on the first rotating shaft 3297, the second portion 3274n of the limiting surface 3274k is located on the second fixing portion 3274b of the limiting member 3274, and the second fixing portion 3274b is sleeved on the second rotating shaft 3298, when the limiting surface 3274k is stressed, the positions of the first portion 3274m of the limiting surface 3274k and the second portion 3274n of the limiting surface 3274k are stable, the limiting surface 3274k and the limiting member 3274k are not easily deformed, the structural stability is high, and the limiting member 3274 can better limit the position of the position-limiting member 3271, so as to perform position-limiting on the position-stopping member 3271, and improve the position-stopping reliability of the position-stopping member 3271.

Illustratively, as shown in fig. 25, the first portion 3274m of the stopper surface 3274k of the stopper 3274 is inclined with respect to the thickness direction of the main shaft 31 and inclined with respect to the extending direction of the main shaft 31. The first portion 3271m of the adjusting surface 3271k of the stopper 3271 abuts against the first portion 3274m of the limiting surface 3274k of the limiting member 3274. The first portion 3271m of the adjusting surface 3271k may be parallel to the first portion 3274m of the limiting surface 3274k, and the first portion 3271m of the adjusting surface 3271k is in surface contact with the first portion 3274m of the limiting surface 3274k. As shown in fig. 26, the second portion 3274n of the stopper surface 3274k is inclined with respect to the thickness direction of the main shaft 31 and inclined with respect to the extending direction of the main shaft 31. The second portion 3271n of the adjusting surface 3271k of the stop 3271 abuts against the second portion 3274n of the limiting surface 3274k of the limiting member 3274. The second portion 3271n of the adjusting surface 3271k may be parallel to the second portion 3274n of the limiting surface 3274k, and the second portion 3271n of the adjusting surface 3271k is in surface contact with the second portion 3274n of the limiting surface 3274k.

In this embodiment, the adjusting surface 3271k is parallel to the limiting surface 3274k and contacts the limiting surface 3274k, the adjusting surface 3271k is in surface contact with the contact surface, and two portions of the limiting surface 3274k and two portions of the adjusting surface 3271k are in one-to-one contact with each other, so that the contact area between the adjusting surface 3271k and the limiting surface 3274k is large, the abutting relationship is stable, and the limiting member 3274 can better limit the position stopper 3271, so as to ensure that the relative position relationship between the position stopper 3271 and the spindle 31 is stable.

Referring to fig. 27, fig. 27 is a schematic cross-sectional view of the structure shown in fig. 22 taken along the line H-H.

In some embodiments, the first swing arm 322 is rotatably connected to the main inner shaft 311, the second swing arm 325 is rotatably connected to the main inner shaft 311, when the first swing arm 322 and the second swing arm 325 are relatively unfolded to the open state, the first stop end surface 3221f of the first swing arm 322 at least partially abuts against the first stop surface 3271h of the stop member 3271, and the second stop end surface 3251f of the second swing arm 325 at least partially abuts against the second stop surface 3271j of the stop member 3271. In the embodiment of the present application, the first stop end surface 3221f at least partially abuts against the first stop surface 3271h, including a case where a partial region of the first stop end surface 3221f abuts against the first stop surface 3271h, and also including a case where the entire region of the first stop end surface 3221f abuts against the first stop surface 3271 h; the second stop end surface 3251f at least partially abuts against the second stop surface 3271j, including a case where a partial region of the second stop end surface 3251f abuts against the second stop surface 3271j, and also including a case where all regions of the second stop end surface 3251f abut against the second stop surface 3271 j.

In this embodiment, since the stop element 3271 is limited by a plurality of structural elements and fixed relative to the main inner shaft 311, the stop element 3271 can prevent the first swing arm 322 and the second swing arm 325 from rotating at an excessively large angle, and further prevent the first fixing frame 321 and the second fixing frame 324 from rotating at an excessively large angle and prevent the first casing 1 and the second casing 2 from rotating at an excessively large angle. Therefore, the stopping member 3271 stops the first swing arm 322 and the second swing arm 325, so as to prevent the first casing 1 and the second casing 2 from being folded when the electronic device 100 is in the open state, thereby preventing the flexible display screen 20 from being pulled by the first casing 1 and the second casing 2, improving the reliability of the flexible display screen 20, and prolonging the service life of the flexible display screen 20.

In addition, due to the stop effect of the stop member 3271, an included angle between the first casing 1 and the second casing 2 in the open state can be equal to a preset value. For example, the preset value may be 180 °, the first housing 1 and the second housing 2 are kept in a flat state when in an open state, the folding device 10 can provide a flat supporting environment for the flexible display 20, and the flatness of the flexible display 20 is good, which is beneficial to optimizing the overall light shadow of the electronic device 100.

In addition, the first stop surface 3271h and the second stop surface 3271j are arranged on the same stop element 3271, and the stop of the first swing arm 322 and the second swing arm 325 is realized through the same stop element 3271, so that the number of the stop elements 3271 required by the folding assembly 3 can be effectively reduced, the space inside the folding assembly 3 occupied by the stop elements 3271 is reduced, and the cost is reduced.

In the present embodiment, referring to fig. 25 and 26, since the limiting member 3274 is fixed to the main inner shaft 311, and the limiting member 3274 can limit the position-stopping member 3271, the structural stability and the structural rigidity of the position-stopping member 3271 relative to the main inner shaft 311 can be increased, the position-stopping member 3271 can better stop the first swing arm 322 and the second swing arm 325, the position-stopping effect is better, and the folding assembly 3 and the electronic device 100 are more stably and reliably unfolded.

The first stop surface 3271h and the second stop surface 3271j may have a symmetrical structure or a substantially symmetrical structure. In the present embodiment, the first and second stop surfaces 3271h and 3271j are symmetrical with respect to a plane, which may be parallel to the thickness direction of the main shaft 31. At this time, when the first swing arm 322 and the second swing arm 325 are relatively unfolded to the open state, the first stop end surface 3221f of the first swing arm 322 abuts against the first stop surface 3271h, and the second stop end surface 3251f of the second swing arm 325 abuts against the second stop surface 3271j, so that the stop member 3271 is more easily controlled in the stop process of the first swing arm 322 and the second swing arm 325, and the stop effect is better. In addition, the first stop surface 3271h and the second stop surface 3271j are symmetrical, which is also beneficial to reducing the processing difficulty of the stop member 3271. The first stop end surface 3221f of the first swing arm 322 and the second stop end surface 3251f of the second swing arm 325 may be symmetrical or substantially symmetrical. It is understood that in the embodiments of the present application, the phrase "plane and plane have a substantially symmetrical structure" means that the positions of the two planes are symmetrical, but the shapes and areas of the two planes allow for differences. In other embodiments, the first stop surface 3271h and the second stop surface 3271j may not be symmetrical, and the matching structure of the first stop surface 3271h and the first swing arm 322 may be different from the matching structure of the second stop surface 3271j and the second swing arm 325.

Illustratively, the stop surface 3274k and/or the adjustment surface 3271k may be provided with a friction layer (not shown) for increasing the static friction coefficient between the stop surface 3274k and the adjustment surface 3271 k. For example, the stop face 3274k may have a friction layer thereon. The friction layer can be fixed on the limiting surface 3274k in an assembling mode, and the friction layer can be made of materials with high static friction coefficient, such as a frosted film material and a film material with concave-convex grains. Alternatively, the friction layer may be formed by performing surface roughening treatment on the limiting surface 3274k, so that the surface layer of the limiting surface 3274k forms a friction layer. The surface roughening process is a prior art and is not described herein. Similarly, the adjusting surface 3271k may also be provided with a friction layer, and the formation of the friction layer may refer to the related description of the friction layer on the limiting surface 3274k, which is not described herein again.

In this embodiment, by increasing the static friction coefficient between the stopper surface 3274k and the adjustment surface 3271k, the static friction force between the stopper surface 3274k and the adjustment surface 3271k is increased, so that the abutting relationship between the stopper surface 3274k and the adjustment surface 3271k is more stable, and when the stopper 3271 receives the acting force of the first swing arm 322 and the second swing arm 325, the contact relationship between the stopper surface 3274k of the stopper 3271 and the adjustment surface 3271k is not easily broken, so that the stopper reliability can be improved.

It can be understood that, during the process of preparing and assembling the components of the folding device 10, a small deviation is likely to occur due to equipment, processes, and the like, which results in insufficient precision of the product after the folding device 10 is assembled, for example, a deviation exists between the angle of the two shells and a preset value in the opened state. In the embodiment of the present application, when the whole folding device 10 is assembled, the angle between the first casing 1 and the second casing 2 in the opened state can also be detected. If the included angle between the first casing 1 and the second casing 2 deviates from the preset value, the included angle between the first swing arm 322 and the second swing arm 325 and the included angle between the first fixing frame 321 and the second fixing frame 324 can be adjusted by adjusting the relative position of the stop member 3271 and the main inner shaft 311, so that the angle between the first casing 1 and the second casing 2 can be adjusted, and the angle between the first casing 1 and the second casing 2 can be changed into the preset value.

As shown in fig. 27, since the connecting end 3276b of the second fastening member 3276 is threadedly connected to the main inner shaft 311, and the position of the second fastening member 3276 relative to the main inner shaft 311 is adjustable, the position-limiting end 3276a of the second fastening member 3276 can move in the thickness direction of the main shaft 31, and the position-stopping member 3271 can follow the position-limiting end 3276a of the second fastening member 3276 to move in the thickness direction of the main shaft 31 by the engagement of the position-limiting end 3276a of the second fastening member 3276 and the first elastic member 3272, so as to adjust the position.

The first stop surface 3271h and the second stop surface 3271j of the stop member 3271 are not parallel to the thickness direction of the spindle 31, that is, the first stop surface 3271h and the second stop surface 3271j are both inclined with respect to the thickness direction of the spindle 31, when the stop member 3271 moves in the thickness direction of the spindle 31, the first stop surface 3271h and the second stop surface 3271j move in the thickness direction of the spindle 31, and when the first swing arm 322 and the second swing arm 325 are in the open state, the position of the first stop surface 3221f of the first swing arm 322 changes with the first stop surface 3271h, and the position of the second stop surface 3251f of the second swing arm 325 changes with the second stop surface 3271j, so that the size of the included angle between the first swing arm 322 and the second swing arm 325 can be adjusted by adjusting the position of the stop member 3271.

For example, after the folding apparatus 10 is assembled, if the included angle between the first casing 1 and the second casing 2 exceeds a predetermined value, that is, the included angle between the first casing 1 and the second casing 2 is too large, and the included angle between the first swing arm 322 and the second swing arm 325 is also too large, the second fastening member 3276 may be further screwed, so that the limiting end 3276a of the second fastening member 3276 moves toward the main inner shaft 311, the stop member 3271 moves toward the main inner shaft 311, the first stop surface 3271h and the second stop surface 3271j move toward the main supporting surface 3111 of the main inner shaft 311, and at this time, the included angle between the first swing arm 322 and the second swing arm 325 is reduced in the opened state, so that the included angle between the first casing 1 and the second casing 2 is adjusted to the predetermined value. If the included angle between the first casing 1 and the second casing 2 is smaller than the preset value, that is, the included angle between the first casing 1 and the second casing 2 is too small, and the included angle between the first swing arm 322 and the second swing arm 325 is also too small, a little second fastening member 3276 may be loosened, so that the limiting end 3276a of the second fastening member 3276 moves in the direction away from the main inner shaft 311, the stop member 3271 moves in the direction away from the main inner shaft 311, and the first stop surface 3271h and the second stop surface 3271j move in the direction away from the main supporting surface 3111 of the main inner shaft 311, at this time, the included angle between the first swing arm 322 and the second swing arm 325 is enlarged in the open state, so that the included angle between the first casing 1 and the second casing 2 is adjusted to the preset value.

Illustratively, the first and second stop surfaces 3271h and 3271j of the stop 3271 may be perpendicular to the thickness direction of the spindle 31. Alternatively, the angle between the first stop surface 3271h and the thickness direction of the main shaft 31 is greater than or equal to 45 °, and may be in the range of 60 ° to 90 °, for example; the second stop surface 3271j may include an angle of 45 ° or more, for example, 60 ° to 90 ° with respect to the thickness direction of the main shaft 31. At this time, when the first stop surface 3271h and the second stop surface 3271j move along with the stop member 3271 in the thickness direction of the spindle 31, the included angle between the first swing arm 322 and the second swing arm 325 can be effectively adjusted by a small displacement.

In the present application, as shown in fig. 24 and 27, since the stopper surface 3274k is inclined with respect to the thickness direction of the main shaft 31 and inclined with respect to the extending direction of the main shaft 31, the stopper 3271 abuts against the stopper surface 3274k of the stopper 3274 under the first urging force F1 of the first elastic member 3272 and the third urging force F3 of the second elastic member 3273, so that the stopper 3271 is restricted by the stopper surface 3274k during the position adjustment, and the stopper 3271 moves in the thickness direction of the main shaft 31 and the extending direction of the main shaft 31 at the same time.

Referring to fig. 23B and fig. 28 in combination, fig. 28 is a partial structural view of the stop member 3271 shown in fig. 22 during a position adjustment process. In fig. 28, (a) corresponds to (c) and (b) corresponds to (d).

In the present embodiment, during the position adjustment of the stopper 3271: the first fastener 3275 fixes the limiting member 3274 to the main inner shaft 311 all the time, and the position of the limiting member 3274 and the position of the main inner shaft 311 are fixed relatively; the second fastening member 3276 can be rotated (e.g., screwed or unscrewed) relative to the main inner shaft 311, so that the limiting end 3276a of the second fastening member 3276 moves in the thickness direction of the main shaft 31, and the stopper 3271 can move in the thickness direction of the main shaft 31 and the extending direction of the main shaft 31 for position adjustment.

Illustratively, the second through hole 3271d of the stop member 3271 has at least two stop positions, at least two stop positions are arranged in the extending direction of the main shaft 31, and the second fastening member 3276 passes through one of the stop positions. When the second fastening member 3276 passes through the stopping position of the stopping member 3271 and the second fastening member 3276 is screwed to the main inner shaft 311, the stopping member 3271 stops at a certain position relative to the main inner shaft 311, the relative positional relationship between the stopping member 3271 and the main inner shaft 311 is stable and reliable, and when the second fastening member 3276 is switched from one stopping position of the stopping member 3271 to another stopping position, the stopping position of the stopping member 3271 relative to the main inner shaft 311 changes and remains relatively fixed after the change. For example, the second through hole 3271d has a first stop position 3271v and a second stop position 3271w, as shown in fig. 28 (a), the second fastener 3276 passes through the first stop position 3271v and connects to the main inner shaft 311, and the stop member 3271 stops at a first position, as shown in fig. 28 (c), the stop member 3271 is fixed relative to the main inner shaft 311; as shown in fig. 28 (b), the second fastening member 3276 passes through the second stop 3271w and is connected to the main inner shaft 311, and the stop member 3271 stops at a second position, which is shown in fig. 28 (d), and the stop member 3271 is fixed relative to the main inner shaft 311. As shown by the arrows in fig. 28 (d), the displacement of the stopper 3271 in the thickness direction of the main shaft 31 is S1, and the displacement in the extending direction of the main shaft 31 is S2, and the displacement S1 and the displacement S2 are combined into a displacement S, the direction of the displacement S is parallel to the stopper surface 3274k, and the stopper 3271 is moved from the first position to the second position by the displacement S.

In some embodiments, the second through hole 3271d may further include a third stop position, etc., that is, the second through hole 3271d may include more than three stop positions, and the stop member 3271 can correspondingly stop at more than three positions to meet more adjustment requirements.

In the embodiment shown in fig. 28, the second through hole 3271d is a kidney-shaped hole, and the length direction of the second through hole 3271d may be parallel to the extending direction of the main shaft 31, so that the second through hole 3271d has a plurality of stop positions arranged in the extending direction of the main shaft 31. In this embodiment, the length direction of the second through hole 3271d is parallel to the extending direction of the main shaft 31, so that a plurality of stop positions can be arranged along the extending direction of the main shaft 31, the stop member 3271 can be continuously adjusted in the extending direction of the main shaft 31, the first stop end surface 3221f and the second stop end surface 3251f can be continuously adjusted in the thickness direction of the main shaft 31, and the included angle between the first swing arm 322 and the second swing arm 325 in the open state can be continuously adjusted. In addition, the two straight edges of the waist-shaped hole also have a guiding function, when the included angle between the first swing arm 322 and the second swing arm 325 is adjusted, the stop piece 3271 is not easy to deviate in the width direction of the main shaft 31, the stop piece 3271 does not extrude the first rotating shaft 3297 or the second rotating shaft 3298, and the relative position relationship between the adjustable rotating mechanism 310 and the main shaft 31 in the width direction of the main shaft 31 is stable.

In other embodiments, the second through hole 3271d may also be a rectangular hole, the rectangular hole includes two opposite long sides and two opposite short sides, a length direction of the second through hole 3271d is parallel to the extending direction of the main shaft 31, so as to have a plurality of stay positions arranged in the extending direction of the main shaft 31, the length direction of the second through hole 3271d is a direction from one of the short sides to the other of the short sides, and the length direction of the second through hole 3271d is parallel to the long sides. In the embodiment of the present application, the specific shape of the second through hole 3271d is not strictly limited, and the second through hole 3271d is configured to provide a plurality of stay positions arranged in the extending direction of the main shaft 31.

In other embodiments, the mounting portion 3271c of the stop 3271 may also include a plurality of second through holes 3271d, the plurality of second through holes 3271d are arranged in the extending direction of the main shaft 31, the plurality of second through holes 3271d are spaced apart from each other or partially overlap each other, each of the second through holes 3271d has a stop, such that the mounting portion 3271c of the stop 3271 has a plurality of stops arranged in the extending direction of the main shaft 31, and the second fastening member 3276 passes through one of the stops. In the present application, the folding assembly 3 may also achieve that the stop member 3271 is adjustable relative to the second fastening member 3276 in the extending direction of the main shaft 31 by other solutions, and the embodiment of the present application is not limited strictly.

Referring to fig. 27 and 29 in combination, fig. 29 is a schematic structural view of the stop 3271 and the stop 3274 shown in fig. 22 in other embodiments.

In other embodiments, the adjustable rotation mechanism 310 may not include the second elastic element 3273, a static friction force may exist between the limiting surface 3274k of the limiting element 3274 and the stop element 3271, and a static friction force may exist between the stop element 3271 and the first elastic element 3272. Illustratively, when the first swing arm 322 and the second swing arm 325 are in the open state: the first elastic member 3272 applies a first acting force F1 to the stopper 3271, where the first acting force F1 is an elastic force of the first elastic member 3272, and the first acting force F1 is parallel to the thickness direction of the main shaft 31 and faces away from the main inner shaft 311; a fifth acting force F5 exerted by the first swing arm 322 and the second swing arm 325 on the stopper 3271, wherein the fifth acting force F5 is parallel to the thickness direction of the main shaft 31 and faces away from the main inner shaft 311; the limiting end 3276a of the second fastening member 3276 applies a second acting force F2 to the stopper 3271, wherein the second acting force F2 is parallel to the thickness direction of the main shaft 31 and faces the main inner shaft 311; the stopper 3274 applies a fourth acting force F4 and a sixth acting force F6 to the stopper 3271, the fourth acting force F4 is a supporting force of the stopper 3274 to the stopper 3271, the fourth acting force F4 is inclined with respect to the extending direction of the main shaft 31 and with respect to the thickness direction of the main shaft 31, the fourth acting force F4 is biased toward the main inner shaft 311 and away from the stopper 3274, the sixth acting force F6 is a static friction force between a stopper surface 3274k of the stopper 3274 and the stopper 3271, the sixth acting force F6 is inclined with respect to the extending direction of the main shaft 31 and inclined with respect to the thickness direction of the main shaft 31, and the seventh stopper 3274 is biased toward the main inner shaft 311 and toward the stopper 3274.

In this embodiment, the adjustable rotation mechanism 310 balances the component of the supporting force (i.e., the fourth acting force F4) of the limiting member 3274 to the stopper 3271 in the extending direction of the main shaft 31 by the static friction force (i.e., the sixth acting force F6) between the limiting member 3274 and the stopper 3271, so that the position of the stopper 3271 relative to the main inner shaft 311 is stable, and the stopping effect of the stopper 3271 on the first swing arm 322 and the second swing arm 325 is reliable.

When the limiting surface 3274k and/or the adjusting surface 3271k are/is provided with a friction layer, the static friction coefficient between the limiting surface 3274k of the limiting member 3274 and the adjusting surface 3271k of the stop member 3271 is relatively large, so that the static friction force between the limiting surface 3274k and the adjusting surface 3271k is relatively large, the limiting member 3274 can better limit the stop member 3271, and the stop effect of the stop member 3271 on the first swing arm 322 and the second swing arm 325 is relatively reliable.

In some embodiments, the first elastic member 3272 may be configured such that when the first swing arm 322 and the second swing arm 325 are in the open state, the first elastic member 3272 applies a seventh acting force F7 to the stopper 3271, where the seventh acting force F7 is a static friction force between the first elastic member 3272 and the stopper 3271, and a direction of the seventh acting force F7 is parallel to an extending direction of the main shaft 31 and faces the stopper 3274. For example, the first elastic member 3272 is an elastic washer, or the first elastic member 3272 includes a spring washer and a flat washer stacked. In these embodiments, the abutting structure between the first elastic member 3272 and the stopper 3271 and the abutting structure between the first elastic member 3272 and the main inner shaft 311 cause static friction to be formed between the first elastic member 3272 and the stopper 3271, and the first elastic member 3272 applies a seventh urging force F7 to the stopper 3271. In the present embodiment, the seventh acting force F7 can cooperate with the sixth acting force F6 to better balance the component force of the fourth acting force F4 in the extending direction of the main shaft 31, so as to improve the structural stability of the stop piece 3271 and ensure the stop effect on the first swing arm 322 and the second swing arm 325.

It is understood that the magnitude relationship between the sixth acting force F6 and the seventh acting force F7 is not limited in the embodiments of the present application. In the adjustable rotating mechanism 310, the sixth acting force F6 alone, the seventh acting force F7 alone, or both the sixth acting force F6 and the seventh acting force F7 may exist, and the structure of the adjustable rotating mechanism 310 is adapted.

It can be understood that, in the foregoing embodiment, the stopper 3271 is provided with the adjusting surface 3271k, and the adjusting surface 3271k is parallel to the limiting surface 3274k and contacts the limiting surface 3274k, so that the contact area between the adjusting surface 3271k and the limiting surface 3274k is large, and the contact relationship between the stopper 3271 and the limiting member 3274 is stable. In other embodiments, the adjusting surface 3271k may also be a curved surface or other surface, and the adjusting surface 3271k may also not be parallel to the limiting surface 3274k; alternatively, the stop member 3271 may not be provided with the adjusting surface 3271k, and the stop member 3271 may be provided with a supporting structure such as a protrusion or a bump, and the supporting structure supports against the limiting surface 3274k.

In the foregoing embodiment, the limiting surface 3274k of the limiting member 3274 includes a first portion 3274m and a second portion 3274n, and in other embodiments, the limiting surface 3274k may include only the first portion 3274m, only the second portion 3274n, or further portions (for example, further include a third portion) on the basis of the first portion 3274m and the second portion 3274n, and the like, which is not strictly limited in this embodiment of the present application. The position of one or more portions included in the limiting surface 3274k may adopt the solutions of the previous embodiments, and other implementation solutions may also be adopted, and this is not strictly limited in the embodiments of the present application. Similarly, the stop 3271 can be adapted, and will not be described in detail herein.

It is understood that, in other embodiments, the adjustable rotating mechanism 310 may not have the limiting member 3274, and the adjustable rotating mechanism 310 is fixed to the main shaft 31 by the stopping member 3271. At this moment, the structure of the whole folding assembly 3 is simpler, the lightweight of the folding assembly 3 is facilitated, the installation process of the folding assembly 3 is simplified, and the production cost of the folding assembly 3 is reduced.

It will be appreciated that in other embodiments, the angle between the first swing arm 322 and the second swing arm 325 in the open position need not be adjusted. At this time, the first stop surface 3271h and the second stop surface 3271j may be parallel to the thickness direction of the spindle 31, and only one stop position may be provided. The matching structure of other structural members can be adjusted correspondingly by those skilled in the art according to the design requirements of the structure.

It is understood that the foregoing embodiments have been described with reference to the electronic device 100 being a mobile phone. When the electronic device 100 is a foldable electronic product such as a tablet computer, a notebook computer, a wearable device, and the like, and the folding device 10 is in the open state, an included angle between the first casing 1 and the second casing 2 may also be 120 °, 150 °, 170 °, or other angles. That is, by the stop function of the stop member 3271, when the first stop end surface 3221f of the first swing arm 322 abuts against the first stop surface 3271h of the stop member 3271 and the first stop surface 3271h of the second swing arm 325 abuts against the second stop surface 3271j of the stop member 3271, an included angle between the first housing 1 and the second housing 2 in the open state may be 120 °, 150 °, 170 ° or other corresponding angles, so as to prevent the over-folding phenomenon of the flexible display screen 20. In addition, the positions of the first stopper end surface 3221f and the second stopper end surface 3251f may be adjusted by the second fastening member 3276, thereby eliminating an accuracy error and a component assembly error.

The above description is only for the specific embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A folding assembly is characterized by comprising a main shaft, a first fixing frame, a first swing arm, a second fixing frame, a second swing arm, a limiting piece, a stop piece, a second fastening piece and a first elastic piece;

the first end of the first swing arm is rotatably connected with the main shaft, the second end of the first swing arm is slidably connected with the first fixing frame, and the first end of the first swing arm is provided with a first stop end face; the first end part of the second swing arm is rotatably connected with the main shaft, the second end part of the second swing arm is connected with the second fixing frame in a sliding manner, and the first end part of the second swing arm is provided with a second stop end surface;

the limiting piece is fixed on the main shaft, the limiting piece is provided with a limiting surface, the limiting surface is inclined relative to the thickness direction of the main shaft and inclined relative to the extending direction of the main shaft, and the extending direction of the main shaft is perpendicular to the thickness direction of the main shaft;

the stop member comprises a first stop portion, a second stop portion and an installation portion, the first stop portion and the second stop portion are respectively fixed on two sides of the installation portion, one end of the second fastening member is connected with the installation portion, the other end of the second fastening member is in threaded connection with the main shaft, the first elastic member abuts between the installation portion and the main shaft, and the stop member abuts against the limiting surface;

the first stop part is provided with a first stop surface, the second stop part is provided with a second stop surface, and the first stop surface and the second stop surface are not parallel to the thickness direction of the main shaft;

in the process that the first swing arm and the second swing arm are relatively unfolded, the first stop end surface moves towards the direction close to the first stop surface, and the second stop end surface moves towards the direction close to the second stop surface; when the first swing arm and the second swing arm are in an open state, the first stop end face is at least partially abutted against the first stop face, and the second stop end face is at least partially abutted against the second stop face.

2. The folding assembly of claim 1 wherein said mounting portion has a second through hole, said second through hole having at least two parking positions, at least two of said parking positions being aligned in the direction of extension of said spindle, said second fastener passing through one of said parking positions.

3. The folding assembly of claim 2 wherein said second through hole is a slotted or rectangular hole, the length direction of said second through hole being parallel to the direction of extension of said major axis.

4. The folding assembly of claim 3, further comprising a second elastic member, the second elastic member is mounted on the main shaft and located on a side of the stop member facing away from the limiting member, the second elastic member abuts against the mounting portion, and an elastic force generated by the second elastic member causes the stop member to abut against the limiting surface.

5. The folding assembly of any of claims 1 to 4 wherein the stop has an adjustment surface parallel to and contacting the stop surface.

6. The folding assembly of claim 5 wherein the stop surface and/or the adjustment surface have a friction layer thereon for increasing the static coefficient of friction between the stop surface and the adjustment surface.

7. The folding assembly of claim 1 wherein the retainer includes a first fixed portion, a second fixed portion and a third fixed portion, the third fixed portion being connected between the first fixed portion and the second fixed portion, the third fixed portion being fixedly connected to the spindle;

folding assembly still including install in the first pivot and the second pivot of main shaft, first pivot is pegged graft the first end of first swing arm with first fixed part, the second pivot is pegged graft the first end of second swing arm with the second fixed part.

8. The folding assembly of claim 7 wherein the restraint surface includes a first portion and a second portion that are coplanar, the first portion of the restraint surface being located at the first securing portion and the second portion of the restraint surface being located at the second securing portion.

9. The folding assembly of claim 7 or 8 wherein the first stop portion has a first adjustment hole and the second stop portion has a second adjustment hole, the first rotation shaft passes through the first adjustment hole and the second rotation shaft passes through the second adjustment hole, the first adjustment hole and the second adjustment hole are rectangular holes or kidney-shaped holes, and the length direction of the first adjustment hole and the second adjustment hole is parallel to the thickness direction of the main shaft.

10. The folding assembly of claim 9 wherein the first stop portion abuts the first securing portion and the second stop portion abuts the second securing portion.

11. The folding assembly of any of claims 1 to 4 wherein the first and second stop surfaces are of symmetrical construction.

12. A folding assembly as claimed in any one of claims 1 to 4 wherein said first end of said first swing arm includes a plurality of first and second oppositely disposed projections and said first end of said second swing arm includes a plurality of first and second oppositely disposed projections;

the folding assembly further comprises a damping assembly, the damping assembly comprises a first clamping piece, a second clamping piece and a first elastic component, the first clamping piece is provided with a plurality of first convex block groups, the second clamping piece is provided with a plurality of second convex block groups, and the plurality of first convex block groups and the plurality of second convex block groups are arranged in a one-to-one correspondence manner;

the first end of first swing arm with the first end of second swing arm all is located first screens piece with between the second screens piece, first elastomeric element is located second screens piece dorsad one side of first screens piece or be located first screens piece dorsad one side of second screens piece, first elastomeric element is used for producing elastic force, so that the first end of first swing arm reaches the first end of second swing arm all supports and holds first screens piece with the second screens piece, just a plurality of first archs of first swing arm are rather than one first lug group closes and forms the joint structure, a plurality of second archs of first swing arm and one of them second lug group closes and forms the joint structure, a plurality of first archs of second swing arm and another first lug group closes and forms the joint structure, a plurality of second archs of second swing arm and another the second lug group closes and forms the joint structure.

13. A folding device, comprising a first housing, a second housing, and a folding assembly as claimed in any one of claims 1 to 12, wherein the first holder of the folding assembly is fixedly connected to the first housing, and the second holder of the folding assembly is fixedly connected to the second housing.

14. An electronic device comprising a flexible display and the folding apparatus of claim 13;

the flexible display screen and the corresponding part of the first shell are fixed on the first shell, the corresponding part of the flexible display screen and the second shell is fixed on the second shell, and in the process that the first shell and the second shell are relatively unfolded or relatively folded, the corresponding part of the flexible display screen and the folding component deforms.