Damping mechanism, folding hinge and electronic equipment

Abstract

The utility model discloses a damping mechanism, a folding hinge and electronic equipment. The damping mechanism comprises a base, a cover body, a damping part and a rotating part, the cover body is arranged on the base, the damping piece is arranged on the base, and the damping piece is located in a cavity formed by the cover body and the base; one end of the rotating piece is located in the cavity, the rotating piece located in the cavity abuts against the damping piece, and the other end of the rotating piece is located outside the cavity. According to the scheme provided by the invention, the rotating part can rotate around the rotating center line without connection of other parts between the rotating part and the base and between the rotating part and the cover body, and at the moment, the rotating radius of the end, located in the cavity, of the rotating part can be designed to be large. Damping force can be generated at the abutting position of the rotating piece and the damping piece, and the force arm corresponding to the damping force is the rotating radius. When the rotating radius is increased, the force arm is also increased, and at the moment, the damping torque acting on the rotating piece is increased, so that the hand feeling of the foldable electronic equipment when the foldable electronic equipment is opened can be improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electronic equipment, and in particular to a damping mechanism, a folding hinge and an electronic device. Background Art

[0002] As a key component in foldable electronic devices, the hinge is used to realize the folding and unfolding of foldable electronic devices.

[0003] Foldable electronic devices, such as smartphones equipped with flexible displays, need to have a certain rotational resistance between two or more displays of the foldable electronic device during the switching process between the unfolded state and the folded state, so that the two or more displays can maintain the unfolded angle required by the user.

[0004] However, the rotational resistance of the hinge mechanism in the existing foldable electronic device is relatively small, which results in the foldable electronic device having a poor feel when opened and failing to provide consumers with a good experience. Utility Model Content

[0005] The embodiments of the present application provide a damping mechanism, a folding hinge and an electronic device, which can increase the rotational resistance, thereby improving the feel of the foldable electronic device when it is opened.

[0006] In order to solve the above technical problems, in a first aspect, the present application proposes a damping mechanism, which comprises: a base, a cover, a damping member and a rotating member;

[0007] The cover is disposed on the base, the damping member is disposed on the base, and the damping member is located in a cavity formed by the cover and the base;

[0008] One end of the rotating member is located in the cavity, and the rotating member located in the cavity abuts against the damping member, and the other end of the rotating member is located outside the cavity;

[0009] The rotating member has a rotation center line, and the rotating member can rotate around the rotation center line relative to the base. When the rotating member rotates around the rotation center line, the resistance generated by the damping member hinders the rotation of the rotating member, wherein the rotation center line is parallel to the length direction of the base.

[0010] The damping mechanism provided in the embodiment of the present application has one end of the rotating member located in the cavity under the limitation of the base and the cover body, and the rotating member can also rotate relative to the base around the rotation center line. The rotating member can realize the rotation around the rotation center line without other parts connecting with the base and the cover body. At this time, without the limitation of other parts, the rotation radius of the rotating member at one end of the cavity can be designed to be larger. Since the rotating member located in the cavity abuts against the damping member, when the rotating member rotates around the rotation center line, a damping force will be generated at the abutment between the rotating member and the damping member, and the force arm corresponding to the damping force is the rotation radius of the rotating member at one end of the cavity. When the rotation radius increases, the force arm will also increase. At this time, the damping force and the damping torque generated by the force arm will also increase, that is, the damping torque acting on the rotating member will increase, so that the hand feel of the foldable electronic device when it is opened can be improved.

[0011] At the same time, since there are no other parts connecting the rotating part to the base and the cover body, rotation around the rotation center line can be achieved. In this way, the end of the rotating part located in the cavity can be designed to be a flat shell shape. When the flat shell-shaped end is located in the cavity, the thickness between the base and the cover body can be reduced, which is conducive to the lightweight design of the overall mechanism.

[0012] In one embodiment, the rotating member includes a first swing arm, one end of the first swing arm is located in the cavity, and the first swing arm located in the cavity abuts against the damping member, and the first swing arm can rotate around the rotation center line.

[0013] In one embodiment, the rotating member further comprises a second swing arm, and the second swing arm and the first swing arm are spaced apart from each other along the width direction of the base;

[0014] One end of the first swing arm facing the second swing arm is located in the cavity, and the first swing arm located in the cavity abuts against the damping member, and one end of the first swing arm away from the second swing arm is located outside the cavity;

[0015] One end of the second swing arm facing the first swing arm is located in the cavity, and the second swing arm located in the cavity abuts against the damping member, and one end of the second swing arm away from the first swing arm is located outside the cavity;

[0016] The first swing arm and the second swing arm can move closer to or farther from each other around the rotation center line. In this way, the electronic device can be folded by driving the first swing arm and the second swing arm to move by external force.

[0017] In one embodiment, a first arc portion is provided at one end of the first swing arm facing the second swing arm, and a first placement groove is provided at one side of the base facing the cover body;

[0018] The first arc portion is rotatably disposed in the first placement groove, the first end surface of the first arc portion abuts against the damping member, and the first arc portion can rotate relative to the first placement groove around the rotation center line. Since the first arc portion is rotatably disposed in the first placement groove, it is beneficial to the rotation of the first swing arm, and the first swing arm is prevented from colliding with the base and being unable to rotate when the first swing arm rotates.

[0019] At the same time, since the overall thickness of the first arc-shaped portion is thin, when the first arc-shaped portion is located in the cavity, the thickness between the base and the cover can be reduced, which is beneficial to the lightweight design of the overall mechanism.

[0020] In one embodiment, a first protrusion is disposed on the first end surface, and the first protrusion abuts against the damping member. Thus, when the first end surface on the first arc-shaped portion rotates relative to the damping member, friction occurs between the first protrusion on the first end surface and the damping member, thereby increasing the damping force on the first end surface.

[0021] In one embodiment, a second arc portion is further provided at one end of the first swing arm facing the second swing arm;

[0022] The second arc-shaped portion and the first arc-shaped portion are spaced apart from each other along the extending direction of the rotation center line;

[0023] The second arc-shaped portion is rotatably disposed in the first placement slot, a second end surface of the second arc-shaped portion abuts against the damping member, and the second arc-shaped portion can rotate relative to the first placement slot around the rotation center line.

[0024] Since the second arc-shaped portion is rotatably arranged in the first placement groove, one end of the first swing arm located in the base and the cover body are both arc-shaped structures. Compared with the cylindrical structure, the overall thickness of the arc-shaped structure is thin, thereby reducing the thickness between the base and the cover body, which is conducive to the lightweight design of the overall mechanism.

[0025] In one embodiment, a second protrusion is provided on the second end surface, the second protrusion and the first protrusion are away from each other along the extension direction of the rotation center line, and the second protrusion abuts against the damping member. In this way, when the second end surface on the first arc-shaped portion rotates relative to the damping member, friction occurs between the second protrusion on the second end surface and the damping member, thereby increasing the damping force on the second end surface.

[0026] In one embodiment, a groove is formed between the first arc-shaped portion and the second arc-shaped portion;

[0027] A first arc-shaped block is provided on one side of the cover body facing the base;

[0028] The first arc block is rotatably arranged in the groove, and the groove can rotate relative to the first arc block around the rotation center line. Since the first arc block is rotatably arranged in the groove, when the first swing arm rotates, the first swing arm will not collide with the first arc block. At the same time, since the first arc block is located in the groove, under the limiting effect of the first arc block, the first swing arm will not move relative to the base and the cover.

[0029] In one embodiment, the damping member includes a cam, and a first fixing plate and a second fixing plate are arranged on the base along the extension direction of the rotation center line at intervals, and the first placement groove is formed between the first fixing plate and the second fixing plate;

[0030] The cam is arranged on the base, and the cam is located on the side of the first fixing plate away from the second fixing plate, and a fifth protrusion is arranged on the cam; the first protrusion abuts against the fifth protrusion, and the first protrusion can rotate around the rotation center line relative to the fifth protrusion.

[0031] In one embodiment, the damping member further includes a third protrusion, and the third protrusion is arranged on a side of the second fixing plate facing the first fixing plate;

[0032] The third protrusion abuts against the second protrusion, and the second protrusion can rotate around the rotation center line relative to the third protrusion.

[0033] In one embodiment, the structure of the second swing arm is the same as that of the first swing arm;

[0034] The connection structure between the second swing arm and the base and the cover is the same as the connection structure between the first swing arm and the base and the cover.

[0035] In one embodiment, the damping member further comprises an elastic member, the elastic member is located in the cavity, one end of the elastic member abuts against a side of the cam away from the first fixing plate, and the other end of the elastic member abuts against the cover or the base. In this way, under the reaction force of the elastic member, the resistance generated between the fifth protrusion on the cam and the first protrusion is greater.

[0036] In one embodiment, a connecting column is provided on the side of the cam facing the elastic member, and one end of the elastic member facing the cam is sleeved on the connecting column and abuts against the cam, so as to facilitate the connection between the elastic member and the cam.

[0037] In one embodiment, a baffle is provided on one side of the cover body facing the base, and one end of the elastic member away from the cam abuts against the baffle, so that it is convenient for the elastic member to abut against the baffle.

[0038] In one embodiment, a limiting groove is provided on the cam along the extending direction of the rotation center line, and a limiting block is provided on the side of the cover body facing the base, and the limiting block cooperates with the limiting groove;

[0039] When the stop block is located in the stop groove, the cam can move relative to the base along the extension direction of the rotation center line. In this way, the cooperation between the stop block and the cam ensures that the cam can only move along the extension direction of the rotation center line, and the cam cannot rotate relative to the base.

[0040] In one embodiment, the damping member includes two cams, each of which is provided with a fifth protrusion; a first fixing plate and a second fixing plate are provided on the base along the extension direction of the rotation center line, and the first placement groove is formed between the first fixing plate and the second fixing plate;

[0041] One of the cams is located on a side of the first fixing plate facing away from the second fixing plate, and the other of the cams is located on a side of the second fixing plate facing away from the first fixing plate;

[0042] The first protrusion abuts against the fifth protrusion on one of the cams, and the second protrusion abuts against the fifth protrusion on another of the cams. Since the first protrusion abuts against the fifth protrusion on one of the cams, and the second protrusion abuts against the fifth protrusion on another of the cams, the resistance of the first swing arm during rotation can be increased.

[0043] In one of the embodiments, the damping member further comprises at least two elastic members, and the elastic members are located in the cavity;

[0044] One end of one of the elastic members abuts against a side of one of the cams away from the first fixing plate, and the other end abuts against the cover body;

[0045] One end of the other elastic member abuts against the side of the other cam away from the second fixing plate, and the other end abuts against the cover body. In this way, under the reaction force of the elastic member, the resistance generated between the first protrusion and the fifth protrusion on one of the cams is greater, and the resistance generated between the second protrusion and the fifth protrusion on the other cam is greater.

[0046] In one embodiment, a first arc-shaped portion and a second arc-shaped portion are provided at one end of the first swing arm facing the second swing arm, and a hollow structure is formed between the first arc-shaped portion and the second arc-shaped portion;

[0047] The damping member is located between the first arc-shaped portion and the second arc-shaped portion, the third end face on the first arc-shaped portion abuts against the damping member, the fourth end face on the second arc-shaped portion abuts against the damping member, and the first arc-shaped portion and the second arc-shaped portion can both rotate around the rotation center line relative to the base.

[0048] In one embodiment, a first protrusion is provided on the third end surface, and the first protrusion abuts against the damping member, so that the resistance between the third end surface and the damping member can be increased.

[0049] In one embodiment, a second protrusion is disposed on the fourth end surface, the second protrusion and the first protrusion are close to each other along the extension direction of the rotation center line, and the second protrusion abuts against the damping member, so that the resistance between the fourth end surface and the damping member can be increased.

[0050] In one embodiment, the structure of the second swing arm is the same as that of the first swing arm.

[0051] In one embodiment, the damping member includes two cams, the two cams are located between the first arc-shaped portion and the second arc-shaped portion, and the two cams abut against each other;

[0052] A fifth protrusion is provided on one side of the cams facing the third end surface, or a fifth protrusion is provided on another side of the cams facing the fourth end surface;

[0053] The first protrusion abuts against the fifth protrusion on one of the cams, or the second protrusion abuts against the fifth protrusion on another of the cams. Since the first protrusion abuts against the fifth protrusion on one of the cams, or the second protrusion abuts against the fifth protrusion on another of the cams, the resistance of the first swing arm during rotation can be increased.

[0054] In one embodiment, the damping member includes two cams, the two cams are located between the first arc-shaped portion and the second arc-shaped portion, and the two cams abut against each other;

[0055] The two cams are provided with fifth protrusions on the opposite sides thereof, the first protrusion abuts against the fifth protrusion on one of the cams, and the second protrusion abuts against the fifth protrusion on the other of the cams. Since the first protrusion abuts against the fifth protrusion on one of the cams, and the second protrusion abuts against the fifth protrusion on the other of the cams, the resistance of the first swing arm during rotation can be increased.

[0056] In one embodiment, the damping member further comprises an elastic member, and the elastic member is arranged between the two cams. In this way, under the reaction force of the elastic member, the resistance generated between the fifth protrusion on the cam and the first protrusion and / or the second protrusion is greater.

[0057] In one embodiment, connecting posts are provided on opposite sides of the two cams, and the two ends of the elastic member are correspondingly sleeved on the two connecting posts on the two cams, so as to facilitate the connection between the elastic member and the cam.

[0058] In one embodiment, the damping mechanism further comprises a fastener, which is arranged on the base and the cover and is used to fix the cover to the base. The arrangement of the fastener facilitates the connection between the base and the cover.

[0059] In one of the embodiments, a first fixing hole is provided on the base, a second fixing hole is provided on the cover, and the fastener passes through the second fixing hole and then cooperates with the first fixing hole.

[0060] In a second aspect, the present application provides a folding hinge, comprising a first fixing plate, a second fixing plate, and a damping mechanism as described in any one of the embodiments of the present application;

[0061] The first fixing plate is connected to the first swing arm, and the second fixing plate is connected to the second swing arm.

[0062] It can be understood that the beneficial effects that can be achieved by the folding hinge provided in the second aspect provided above can refer to the beneficial effects in the first aspect and any possible design thereof, and will not be repeated here.

[0063] In a third aspect, the present application provides an electronic device, comprising a first body, a second body, and a folding hinge as described in an embodiment of the present application;

[0064] The first body is connected to the first fixing plate, and the second body is connected to the second fixing plate.

[0065] It can be understood that the beneficial effects that can be achieved by the electronic device provided by the third aspect provided above can refer to the beneficial effects in the design method of the second aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative labor.

[0067] Figure 1 A schematic diagram of an electronic device in a flattened state provided by an embodiment of the present application;

[0068] Figure 2 A structural diagram of an electronic device provided in one embodiment of the present application in different usage states;

[0069] Figure 3 A structural diagram of an electronic device provided in one embodiment of the present application in different usage states;

[0070] Figure 4 A schematic diagram of the structure of a damping mechanism provided in one embodiment of the present application;

[0071] Figure 5 for Figure 4 A is an enlarged schematic diagram;

[0072] Figure 6 for Figure 4 Exploded diagram of

[0073] Figure 7 for Figure 6 The enlarged schematic diagram of point B in FIG.

[0074] Figure 8 for Figure 6 The enlarged schematic diagram of point C in FIG.

[0075] Fig. 9 A schematic structural diagram of a first swing arm provided in one embodiment of the present application;

[0076] Fig.10 for Fig. 9 The enlarged schematic diagram of D in FIG.

[0077] Fig.11 A schematic diagram of the structure of a cam provided in an embodiment of the present application;

[0078] Fig.12 A schematic diagram of the structure of another damping mechanism provided by an embodiment of the present application;

[0079] Fig.13 for Fig.12 The enlarged schematic diagram of point E in FIG.

[0080] Fig.14 A schematic structural diagram of another damping mechanism provided in an embodiment of the present application;

[0081] Fig.15 for Fig.14 Exploded diagram of

[0082] Fig.16 for Fig.15 A partial schematic diagram of the .

[0083] Description of reference numerals:

[0084] 100. Folding hinge;

[0085] 200. The first ontology;

[0086] 300, second entity;

[0087] 400, damping mechanism;

[0088] 410, base; 411, first fixing plate; 412, second fixing plate; 4121, third protrusion; 413, first placement groove; 414, third fixing plate; 415, fourth fixing plate; 4151, fourth protrusion; 416, second placement groove; 417, first fixing hole;

[0089] 420, cover body; 421, first arc-shaped block; 422, second arc-shaped block; 423, baffle; 424, second fixing hole;

[0090] 430, first swing arm; 431, first arc-shaped portion; 4311, first end surface; 4312, first protrusion; 4313, third end surface; 432, second arc-shaped portion; 4321, second end surface; 4322, second protrusion; 4323, fourth end surface; 433, groove;

[0091] 440, second swing arm;

[0092] 450, cam; 451, fifth protrusion; 452, connecting column; 453, limiting groove;

[0093] 460, elastic member;

[0094] 470. Fasteners. DETAILED DESCRIPTION

[0095] The terms used in the implementation method part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The implementation method of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0096] The present application provides an electronic device. For example, the electronic device in the present application can be a mobile phone, a tablet computer, a desktop, a laptop, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a personal digital assistant (PDA), an augmented reality (AR) or virtual reality (VR) device, etc., including a folding screen device, and the present application does not impose any special restrictions on the specific form of the device.

[0097] The electronic device includes a damping mechanism, which is used to realize the folding and unfolding of the electronic device. The electronic device can be folded along a folding line to form multiple (two or more) screens. For the convenience of description, the following description takes the electronic device as a folding screen mobile phone as an example.

[0098] Figure 1 This is a schematic diagram of an electronic device provided in an embodiment of the present application in a flattened state. Figure 2 A schematic diagram of an electronic device in a hovering state provided by an embodiment of the present application; Figure 3 A schematic diagram of an electronic device in a closed state provided in an embodiment of the present application.

[0099] refer to Figures 1 to 3 As shown, the electronic device includes a folding hinge 100, a first body 200 and a second body 300, wherein the first body 200 and the second body 300 are connected via the folding hinge 100. When the electronic device is a folding screen mobile phone, the first body 200 and the second body 300 may be the middle frame of the folding screen mobile phone, and the middle frame may be covered with a flexible screen, and the flexible screen can be bent at the position corresponding to the folding hinge 100.

[0100] The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0101] The rotating shaft is a key component of the folding hinge 100 in the foldable electronic device, and its function is to realize the folding and unfolding of the foldable electronic device. Since the rotation resistance of the rotating shaft mechanism in the existing foldable electronic device is small, the foldable electronic device feels bad when opened, which cannot bring a good experience to consumers.

[0102] In order to solve the above problems, Figure 4As shown, an embodiment of the present application provides a damping mechanism 400, which includes a base 410, a cover body 420, a damping member and a rotating member, wherein the cover body 420 is arranged at the base 410, the damping member is arranged at the base 410, and the damping member is located in a cavity formed by the cover body 420 and the base 410; one end of the rotating member is located in the cavity, and the rotating member located in the cavity abuts against the damping member, and the other end of the rotating member is located outside the cavity, and the rotating member has a rotation center line, and the rotating member can rotate around the rotation center line relative to the base, and under the condition that the rotating member rotates around the rotation center line, the resistance generated by the damping member hinders the rotation of the rotating member, wherein the rotation center line is parallel to the length direction of the base.

[0103] The rotation center line in this embodiment is as follows Figure 5 The straight line where the X-axis lies.

[0104] In this embodiment, the cover body 420 can be bolted to the top of the base 410, or the cover body 420 can be snapped onto the top of the base 410. The specific method can be determined based on actual conditions, and this embodiment of the specification does not limit this.

[0105] The damping member in this embodiment may be integrally formed with the base 410 , or the damping member may be snap-connected to a side of the base 410 facing the cover 420 . The specific method may be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0106] In this embodiment, a plurality of rotating parts may be provided, for example, two, three, five, etc., which may be specifically determined according to actual conditions, and the embodiments of this specification do not limit this.

[0107] In this embodiment, when the cover 420 is connected to the base 410, a cavity is formed between the cover 420 and the base 410, and one end of the rotating member is located in the cavity. At the same time, under the restriction of the cover 420 and the base 410, the rotating member cannot fall off freely from between the cover 420 and the base 410. When one end of the rotating member is located in the cavity, the rotating member located in the cavity abuts against the damping member, and at the same time, the rotating member can also rotate around the X-axis relative to the cover 420 and the base 410.

[0108] When in use, the rotating member is driven to move by an external force so that the rotating member rotates around the X-axis. At this time, since the rotating member in the cavity abuts against the damping member, the damping member will generate resistance to hinder the rotation of the rotating member.

[0109] The damping mechanism 400 provided in the embodiment of the present application has one end of the rotating member located in the cavity under the limitation of the base 410 and the cover 420, and the rotating member can also rotate around the rotation center line relative to the base 410. There is no other component connection between the rotating member and the base 410 and the cover 420, and the rotation around the rotation center line can be realized. At this time, without the limitation of other components, the rotation radius of the rotating member at one end of the cavity can be designed to be larger. Since the rotating member located in the cavity abuts against the damping member, when the rotating member rotates around the rotation center line, a damping force will be generated at the abutment between the rotating member and the damping member, and the force arm corresponding to the damping force is the rotation radius of the rotating member at one end of the cavity. When the rotation radius increases, the force arm will also increase. At this time, the damping force and the damping torque generated by the force arm will also increase, that is, the damping torque acting on the rotating member will increase, so that the hand feel of the foldable electronic device when it is opened can be improved.

[0110] At the same time, since there are no other parts connecting the rotating part to the base 410 and the cover body 420, rotation around the rotation center line can be achieved. In this way, the end of the rotating part located in the cavity can be designed to be a flat shell shape. When the flat shell-shaped end is located in the cavity, the thickness between the base 410 and the cover body 420 can be reduced, which is conducive to the lightweight design of the overall mechanism.

[0111] In some embodiments, Figure 5 Combined with Figure 4 As shown, the rotating member may include a first swing arm 430, or may include a first swing arm 430 and a second swing arm 440. The specific method may be determined according to actual conditions, and the embodiments of this specification do not limit this. For the convenience of description, the following description is based on the example that the rotating member includes a first swing arm 430 and a second swing arm 440.

[0112] Among them, the first swing arm 430 and the second swing arm 440 are arranged at intervals along the width direction of the base 410, and at the same time, one end of the first swing arm 430 facing the second swing arm 440 is located in the cavity, and the first swing arm 430 located in the cavity abuts against the damping member, and one end of the first swing arm 430 away from the second swing arm 440 is located outside the cavity; one end of the second swing arm 440 facing the first swing arm 430 is located in the cavity, and the second swing arm 440 located in the cavity abuts against the damping member, and one end of the second swing arm 440 away from the first swing arm 430 is located outside the cavity; the first swing arm 430 and the second swing arm 440 can approach or move away from each other around the rotation center line.

[0113] In this embodiment, the width direction of the base 410 is as follows Figure 5 In the Y-axis direction, the included angle between the Y-axis and the X-axis can be 85°, 90°, etc. This embodiment is described by taking the Y-axis and the X-axis as being perpendicular to each other.

[0114] In this embodiment, the structures of the first swing arm 430 and the second swing arm 440 can be the same, or the structures of the first swing arm 430 and the second swing arm 440 are different. For the convenience of description, the following description is based on the example that the structures of the first swing arm 430 and the second swing arm 440 are the same.

[0115] refer to Figure 5 As shown, the first swing arm 430 and the second swing arm 440 are arranged at intervals along the Y-axis direction, and the first swing arm 430 and the second swing arm 440 are symmetrically arranged on the base 410. One end of the first swing arm 430 facing the second swing arm 440 is located in the cavity, and the first swing arm 430 located in the cavity cannot fall freely from between the cover body 420 and the base 410 under the restriction of the cover body 420 and the base 410. At the same time, the first swing arm 430 can rotate around the X-axis relative to the cover body 420 and the base 410.

[0116] In this embodiment, the matching structure between the second swing arm 440 and the base 410 is the same as the matching structure between the first swing arm 430 and the base 410, and will not be described again here.

[0117] When in use, the electronic device can be folded by driving the first swing arm 430 and the second swing arm 440 to rotate around the X-axis so that the first swing arm 430 and the second swing arm 440 are moved closer to or farther from each other.

[0118] In some embodiments, Figure 6 Combined with Fig. 9 As shown, the first swing arm 430 is provided with a first arc portion 431 at one end facing the second swing arm 440. Figure 8 As shown, a first placement groove 413 is provided on one side of the base 410 facing the cover body 420, wherein the first arc-shaped portion 431 is rotatably disposed in the first placement groove 413. When one end of the first swing arm 430 is disposed in the cavity formed by the cover body 420 and the base 410, the first arc-shaped portion 431 is located in the first placement groove 413, and a first end surface 4311 on the first arc-shaped portion 431 abuts against the damping member in the X-axis direction, and the first arc-shaped portion 431 can rotate relative to the first placement groove 413 around the rotation center line.

[0119] In this embodiment, when the first arc portion 431 is located in the first placement groove 413, the arc surface on the outside of the first arc portion 431 is in close contact with the arc surface formed by the first placement groove 413. At the same time, the first arc portion 431 can also rotate around the X-axis relative to the first placement groove 413. In this way, when the first swing arm 430 is rotated, the first arc portion 431 can be prevented from colliding with the first placement groove 413, that is, the first swing arm 430 can be prevented from colliding with the base 410 and being unable to rotate.

[0120] refer to Fig. 9 Combined with Fig.10As shown, since the first swing arm 430 and the base 410 can be rotated by the cooperation of the first arc-shaped portion 431 and the first placement groove 413, the first swing arm 430 and the base 410 can be rotated relative to the base 410 around the X-axis without any other parts connecting them. At this time, without the limitation of other parts, the rotation radius R corresponding to the first arc-shaped portion 431 can be designed to be larger.

[0121] Since the first end surface 4311 of the first arc-shaped portion 431 located in the cavity abuts against the damping member, when the first swing arm 430 rotates around the X-axis, Fig.10 As shown, an extrusion force F1 and a damping force F2 are generated at the contact point between the first end surface 4311 and the damping member. The lever arm L corresponding to the damping force F2 is the rotation radius R of the first arc-shaped portion 431. Therefore, when the rotation radius R increases, the lever arm L will also increase. In this way, the damping force F2 and the damping torque generated by the lever arm L will also increase. Therefore, the damping torque acting on the first swing arm 430 will increase, thereby improving the feel of the foldable electronic device when it is opened.

[0122] At the same time, reference Fig.10 As shown, since the rotating part of the first swing arm 430 relative to the base 410 is the first arc-shaped portion 431, compared with the existing cylindrical structure, the overall thickness of the first arc-shaped portion 431 is thin. In this way, when the first arc-shaped portion 431 is located in the cavity, the thickness between the base 410 and the cover body 420 can be reduced, which is conducive to the lightweight design of the overall mechanism.

[0123] In some embodiments, Fig. 9 or Fig.10 As shown, a first protrusion 4312 is provided on the first end surface 4311 , and the first protrusion 4312 abuts against the damping member.

[0124] In this embodiment, the first protrusion 4312 is integrally formed with the first end face 4311. Of course, it is understandable that the first protrusion 4312 can also be snapped onto the first end face 4311. The specific method can be determined based on actual conditions, and this embodiment of the specification does not limit this.

[0125] In this embodiment, the first protrusion 4312 can be made of an elastic material. In this way, when the first protrusion 4312 rotates relative to the damping member, the first protrusion 4312 will be squeezed. Under the reaction force of the first protrusion 4312, the friction force between the first protrusion 4312 and the damping member increases, thereby increasing the damping force on the first end face 4311.

[0126] In order to further increase the friction between the first protrusion 4312 and the damping element, in this embodiment, anti-slip grooves may be provided on the side of the first protrusion 4312 facing the damping element. The anti-slip grooves may be evenly distributed on the first protrusion 4312 or may be cross-distributed on the first protrusion 4312. The specific amount may be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0127] In some embodiments, Figure 6 Combined with Fig. 9 As shown, a second arc portion 432 is also provided at one end of the first swing arm 430 facing the second swing arm 440, wherein the second arc portion 432 and the first arc portion 431 are spaced apart along the extension direction of the rotation center line; when the second arc portion 432 is located in the first placement groove 413, the second end face 4321 on the second arc portion 432 abuts against the damping member along the X-axis direction, and the second arc portion 432 can rotate around the rotation center line relative to the first placement groove 413.

[0128] In this embodiment, the structure of the second arc portion 432 is the same as that of the first arc portion 431. Of course, it is understandable that the structure of the second arc portion 432 may also be different from that of the first arc portion 431. For the sake of convenience, the following description will take the example that the second arc portion 432 has the same structure as the first arc portion 431.

[0129] In this embodiment, the matching structure between the second arc portion 432 and the first placement groove 413 is the same as the matching structure between the first arc portion 431 and the first placement groove 413 . Therefore, the specific connection structure of the second arc portion 432 is not described again.

[0130] In this embodiment, reference Fig. 9 As shown, since the first end surface 4311 on the first arc-shaped portion 431 on the first swing arm 430 abuts against the damping member, at the same time, the second end surface 4321 on the second arc-shaped portion 432 on the first swing arm 430 also abuts against the damping member, in this way, one end of the first swing arm 430 located in the cavity formed by the cover body 420 and the base 410 abuts against the damping member on both sides along the X-axis direction, thereby increasing the damping force of the first swing arm 430 during rotation.

[0131] Since one end of the first swing arm 430 located in the base 410 and the cover body 420 are both arc-shaped structures, compared with the cylindrical structure, the overall thickness of the arc-shaped structure is thinner, thereby reducing the thickness between the base 410 and the cover body 420, which is beneficial to the lightweight design of the overall structure.

[0132] In some embodiments, Figure 8 or Fig. 9As shown, a second protrusion 4322 is provided on the second end surface 4321 , the second protrusion 4322 and the first protrusion 4312 are away from each other along the extension direction of the rotation center line, and the second protrusion 4322 abuts against the damping member.

[0133] The structure of the second protrusion 4322 in this embodiment may refer to the structure of the first protrusion 4312 described above, and will not be described again here.

[0134] In this embodiment, the second protrusion 4322 is integrally formed with the second end face 4321. Of course, it is understandable that the second protrusion 4322 can also be snapped onto the second end face 4321. The specific method can be determined based on actual conditions, and this specification does not limit this.

[0135] In this embodiment, the second protrusion 4322 can be made of elastic material. In this way, when the second protrusion 4322 rotates relative to the damping member, the second protrusion 4322 will be squeezed. Under the reaction force of the second protrusion 4322, the friction force between the second protrusion 4322 and the damping member increases, thereby increasing the damping force on the second end face 4321.

[0136] In order to further increase the friction between the second protrusion 4322 and the damping element, in this embodiment, anti-slip grooves may be provided on the side of the second protrusion 4322 facing the damping element. The anti-slip grooves may be evenly distributed on the second protrusion 4322 or may be cross-distributed on the second protrusion 4322. The specific amount may be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0137] In some embodiments, Fig. 9 As shown, a groove 433 is formed between the first arc-shaped portion 431 and the second arc-shaped portion 432; Figure 7 As shown, a first arc block 421 is provided on the side of the cover body 420 facing the base 410, and the first arc block 421 is rotatably provided in the groove 433. When the cover body 420 is installed on the base 410, at the same time, the first arc portion 431 and the second arc portion 432 are both located in the first placement groove 413, at this time, the first arc block 421 is located in the groove 433, and the groove 433 can rotate around the rotation center line relative to the first arc block 421.

[0138] In this embodiment, one groove 433 , two grooves 433 , etc. may be formed between the first arc portion 431 and the second arc portion 432 . For the sake of convenience, the following description will take the example of one groove 433 formed between the first arc portion 431 and the second arc portion 432 .

[0139] In this embodiment, the first arc block 421 can be integrally formed with the cover body 420, or the first arc block 421 can be snapped onto the cover body 420. The specific method can be determined according to actual conditions, and this specification does not limit this.

[0140] In this embodiment, since the first arc block 421 is rotatably disposed in the groove 433, when the first swing arm 430 rotates, the first swing arm 430 will not collide with the first arc block 421. At the same time, when the cover 420 is installed on the base 410, the first arc portion 431 and the second arc portion 432 are both located in the first placement groove 413, the first arc block 421 is correspondingly located in the groove 433. In this way, when the first swing arm 430 is installed, the first arc block 421 is located in the corresponding groove 433. Under the limiting effect of the first arc block 421, the first swing arm 430 can be prevented from moving relative to the base 410 along the X-axis.

[0141] In some embodiments, Fig.11 Combined with Figure 8 As shown, the damping member includes a cam 450, and a first fixed plate 411 and a second fixed plate 412 are spaced apart on the base 410 along the extension direction of the rotation center line, and a first placement groove 413 is formed between the first fixed plate 411 and the second fixed plate 412; at the same time, the cam 450 is arranged on the base 410, and the cam 450 is located on the side of the first fixed plate 411 away from the second fixed plate 412, and a fifth protrusion 451 is arranged on the cam 450; the first protrusion 4312 is in contact with the fifth protrusion 451, and the first protrusion 4312 can rotate around the rotation center line relative to the fifth protrusion 451.

[0142] In this embodiment, the cam 450 can move relative to the base 410 along the X-axis direction to prevent the first swing arm 430 and the cam 450 from getting stuck when the first protrusion 4312 abuts against the fifth protrusion 451, thereby affecting the rotation of the first swing arm 430. At the same time, the cam 450 cannot rotate synchronously with the first swing arm 430 under the restriction of the base 410 and the cover 420. Otherwise, when the first swing arm 430 and the cam 450 rotate synchronously, the fifth protrusion 451 cannot provide rotation resistance to the first protrusion 4312.

[0143] Of course, it can be understood that the above-mentioned damping member structure is only an example. In other embodiments, such as Fig.11 Combined with Figure 8 As shown, the damping member may further include a third protrusion 4121, wherein the third protrusion 4121 is arranged on a side of the second fixing plate 412 facing the first fixing plate 411; the third protrusion 4121 abuts against the second protrusion 4322, and the second protrusion 4322 can rotate around the rotation center line relative to the third protrusion 4121.

[0144] For the convenience of description, the following description is made by taking the damping member including the cam 450 and the third protrusion 4121 as an example.

[0145] In this embodiment, the fifth protrusion 451 and the third protrusion 4121 may be made of an elastic material, or one of the fifth protrusion 451 or the third protrusion 4121 is made of an elastic material, or the fifth protrusion 451 and the third protrusion 4121 will not be deformed when squeezed.

[0146] Since the first protrusion 4312 and the second protrusion 4322 are made of elastic material, when the first protrusion 4312 abuts and rotates with the fifth protrusion 451, the first protrusion 4312 will be squeezed and deformed. At the same time, when the second protrusion 4322 abuts and rotates with the third protrusion 4121, the second protrusion 4322 will also be squeezed and deformed.

[0147] In this embodiment, the first fixing plate 411 and the second fixing plate 412 are both clamped on the base 410, or the first fixing plate 411 and the base 410 are integrally formed, and the second fixing plate 412 and the base 410 are integrally formed. The specific details can be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0148] In this embodiment, the third protrusion 4121 is integrally formed with the second fixing plate 412, or the third protrusion 4121 is snap-connected to the second fixing plate 412, which can be specifically determined according to actual conditions and is not limited in this embodiment of the present specification.

[0149] In this embodiment, the fifth protrusion 451 is integrally formed with the cam 450, or the fifth protrusion 451 is snap-connected to the cam 450, which can be specifically determined according to actual conditions and is not limited in this embodiment of the present specification.

[0150] refer to Figure 8 Combined with Fig.11 As shown, a fifth protrusion 451 is provided on the right side of the cam 450, and when the cam 450 is placed on the left side of the first fixing plate 411, the fifth protrusion 451 is located in the first placement groove 413. When the first arc-shaped portion 431 and the second arc-shaped portion 432 on the first swing arm 430 are located in the first placement groove 413, the first protrusion 4312 on the first arc-shaped portion 431 abuts against the fifth protrusion 451, and the second protrusion 4322 on the second arc-shaped portion 432 abuts against the third protrusion 4121, and the second protrusion 4322 can rotate around the X-axis relative to the third protrusion 4121. Since the contact between the first swing arm 430 and the damping member is the contact between the protrusions, compared with the case of planar contact, the present application can increase the resistance of the first swing arm 430 when rotating.

[0151] It should be noted that the above damping member structure is only an example, and in other alternative solutions, other structures may also be used, for example, the damping member is a friction gear. This application does not impose any special restrictions on the specific connection structure of the damping member, as long as the above structure can achieve the purpose of this application.

[0152] In this embodiment, when the first arc portion 431 and the second arc portion 432 on the first swing arm 430 are located in the first placement groove 413, the first end surface 4311 on the first arc portion 431 will abut against the side of the first fixing plate 411 facing the second fixing plate 412, and the second end surface 4321 on the second arc portion 432 will abut against the side of the second fixing plate 412 facing the first fixing plate 411. In this way, under the limiting action of the first fixing plate 411 and the second fixing plate 412, the first swing arm 430 cannot move relative to the base 410 along the X-axis to the side of the first fixing plate 411 away from the second fixing plate 412, or the first swing arm 430 cannot move relative to the base 410 along the X-axis to the side of the second fixing plate 412 away from the first fixing plate 411.

[0153] In order to further increase the friction between the first swing arm 430 and the damping element, in this embodiment, anti-slip grooves may be provided on the side of the third protrusion 4121 facing the second protrusion 4322, and / or, anti-slip grooves may be provided on the side of the fifth protrusion 451 facing the first protrusion 4312. The specific details may be determined based on actual conditions and are not limited to the embodiments of this specification.

[0154] In some embodiments, the structure of the second swing arm 440 is the same as that of the first swing arm 430 ; at the same time, the connection structure between the second swing arm 440 and the base 410 and the cover 420 is the same as that between the first swing arm 430 and the base 410 and the cover 420 .

[0155] refer to Figure 8 As shown, a third fixing plate 414 and a fourth fixing plate 415 are spaced apart on the base 410 along the X-axis, wherein the third fixing plate 414 and the first fixing plate 411 are symmetrical, the fourth fixing plate 415 and the second fixing plate 412 are symmetrical, a second placement groove 416 is formed between the third fixing plate 414 and the fourth fixing plate 415, and a fourth protrusion 4151 is provided on the side of the fourth fixing plate 415 facing the third fixing plate 414.

[0156] The connection structure of the third fixing plate 414, the fourth fixing plate 415, the second placement groove 416 and the fourth protrusion 4151 in this embodiment corresponds one by one to the connection structure of the first fixing plate 411, the second fixing plate 412, the first placement groove 413 and the third protrusion 4121 mentioned above, and will not be repeated here.

[0157] In this embodiment, the matching structure of the second swing arm 440 and the third fixing plate 414, the fourth fixing plate 415, the second placement groove 416, and the fourth protrusion 4151 can refer to the matching structure of the first swing arm 430 and the first fixing plate 411, the second fixing plate 412, the first placement groove 413, and the third protrusion 4121, and will not be repeated here.

[0158] refer to Figure 7 As shown, the cover body 420 also has a second arc block 422 , and the matching structure between the second arc block 422 and the second swing arm 440 can refer to the matching structure between the first arc block 421 and the first swing arm 430 , which will not be repeated here.

[0159] In some embodiments, Figure 6 Combined with Figure 8 As shown, the damping member also includes an elastic member 460, which is located in the cavity. One end of the elastic member 460 abuts against the side of the cam 450 away from the first fixed plate 411, and the other end of the elastic member 460 abuts against the cover body 420 or the base 410. At the same time, the cam 450 can move along the X-axis relative to the base 410.

[0160] In this embodiment, the elastic part 460 may refer to a part that can be deformed under the action of an external force and return to its original shape after the external force is removed. The elastic part 460 can be elastically compressed in the X-axis direction. The elastic part 460 can be made of metal or non-metallic material, such as: a leaf spring, a coil spring, a gas spring, a rubber spring, etc. The specific material can be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0161] In this embodiment, one end of the elastic member 460 abuts against the side of the cam 450 away from the first fixing plate 411, and the other end abuts against the cover 420 or the base 410. The specific method can be determined according to actual conditions, and the embodiments of this specification do not limit this. In this way, under the reaction force of the elastic member 460, after the fifth protrusion 451 on the cam 450 contacts the first protrusion 4312, when the first protrusion 4312 rotates relative to the fifth protrusion 451, the friction between the first protrusion 4312 and the fifth protrusion 451 will increase, thereby increasing the resistance of the first swing arm 430 when rotating.

[0162] In some embodiments, Fig.11 As shown, a connecting column 452 is provided on one side of the cam 450 facing the elastic member 460 , and one end of the elastic member 460 facing the cam 450 is sleeved on the connecting column 452 and abuts against the cam 450 .

[0163] The connecting column 452 in this embodiment can be integrally formed with the cam 450, or the connecting column 452 can be threadedly connected to the cam 450. The specific details can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0164] Since the cam 450 is provided with a connecting post 452 , it is convenient to sleeve one end of the elastic member 460 facing the cam 450 onto the connecting post 452 , thereby facilitating the connection between the elastic member 460 and the cam 450 .

[0165] In some embodiments, Figure 7 As shown, a baffle 423 is disposed on one side of the cover 420 facing the base 410 , and one end of the elastic member 460 away from the cam 450 abuts against the baffle 423 .

[0166] The baffle 423 in this embodiment is integrally formed with the cover body 420, or the baffle 423 is snap-connected to the cover body 420, and the specific details can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0167] Since the baffle 423 is disposed on the cover body 420 , it is convenient for the end of the elastic member 460 away from the cam 450 to be fixed to the cover body 420 .

[0168] In some embodiments, Fig.11 As shown, a limiting groove 453 is provided on the cam 450 along the extension direction of the rotation centerline, and a limiting block (not marked in the figure) is provided on the side of the cover body 420 facing the base 410, and the limiting block also extends along the extension direction of the rotation centerline, and the limiting block cooperates with the limiting groove 453; when the limiting block is located in the limiting groove 453, the cam 450 cannot rotate relative to the base 410.

[0169] In this embodiment, a limiting groove 453 is provided on the cam 450 along the X-axis direction, and a limiting block is provided on the side of the cover 420 facing the base 410 along the X-axis direction. When the various components are installed, the limiting block on the cover 420 is correspondingly located in the limiting groove 453 on the cam 450. At this time, the cam 450 cannot rotate relative to the base 410 under the limiting effect of the limiting block. In this way, the cam 450 cannot rotate synchronously with the first swing arm 430 under the limitation of the base 410 and the cover 420. Otherwise, when the first swing arm 430 and the cam 450 rotate synchronously, the fifth protrusion 451 cannot provide rotation resistance to the first protrusion 4312.

[0170] In some embodiments, Fig.12 Combined with Fig.13 As shown, the damping member includes two cams 450, such as Fig.11 As shown, each cam 450 is provided with a fifth protrusion 451; Figure 8As shown, a first fixing plate 411 and a second fixing plate 412 are spaced apart on the base 410 along the extension direction of the rotation centerline, wherein a first placement groove 413 is formed between the first fixing plate 411 and the second fixing plate 412; one of the cams 450 is located on the side of the first fixing plate 411 away from the second fixing plate 412, wherein the other cam 450 is located on the side of the second fixing plate 412 away from the first fixing plate 411; the first protrusion 4312 abuts against the fifth protrusion 451 on one of the cams 450, and the second protrusion 4322 abuts against the fifth protrusion 451 on the other cam 450.

[0171] In this embodiment, the structures of the first fixing plate 411, the second fixing plate 412, and the first placement groove 413 can refer to the above description. At the same time, the structure of the cam 450 can also refer to the above description, which will not be repeated here.

[0172] The matching structure between the first swing arm 430 and the first placement slot 413 in this embodiment can refer to the above description and will not be repeated here.

[0173] In this embodiment, reference Fig.13 As shown, one of the cams 450 is located on the left side of the first fixed plate 411, and the other cam 450 is located on the right side of the second fixed plate 412. At the same time, the fifth protrusions 451 on the two cams 450 are both located in the first placement groove 413. When one end of the first swing arm 430 is placed in the first placement groove 413, the first protrusion 4312 on the first swing arm 430 abuts against the fifth protrusion 451 on one of the cams 450, and the second protrusion 4322 on the first swing arm 430 abuts against the fifth protrusion 451 on the other cam 450. At the same time, the matching result of the first protrusion 4312 and the fifth protrusion 451, and the matching structure of the second protrusion 4322 and the fifth protrusion 451 can be described above, and will not be repeated here.

[0174] Since the contacts between the first swing arm 430 and the damping member are all contacts between protrusions, compared with the case of planar contact, the present application can increase the resistance of the first swing arm 430 during rotation.

[0175] In some embodiments, Fig.13 As shown, the damping member also includes at least two elastic members 460, which are located in the cavity; one end of one of the elastic members 460 abuts against the side of one of the cams 450 away from the first fixed plate 411, and the other end abuts against the cover body 420 or the base 410; one end of the other elastic member 460 abuts against the side of the other of the cams 450 away from the second fixed plate 412, and the other end abuts against the cover body 420 or the base 410.

[0176] In this embodiment, the elastic part 460 may refer to a part that can be deformed under the action of an external force and return to its original shape after the external force is removed. The elastic part 460 can be elastically compressed in the X-axis direction. The elastic part 460 can be made of metal or non-metallic material, such as: a leaf spring, a coil spring, a gas spring, a rubber spring, etc. The specific material can be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0177] In this embodiment, one or two elastic members 460 may be provided on one side of each cam 450 . The specific number may be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0178] The connection structure between the elastic member 460 and the cam 450 in this embodiment can be referred to the above description and will not be repeated here.

[0179] Since one end of one of the elastic members 460 abuts against the side of one of the cams 450 away from the first fixed plate 411, and the other end abuts against the cover body 420 or the base 410; one end of the other elastic member 460 abuts against the side of another of the cams 450 away from the second fixed plate 412, and the other end abuts against the cover body 420 or the base 410, in this way, under the reaction force of the elastic member 460, the resistance generated between the first protrusion 4312 and the fifth protrusion 451 on one of the cams 450 is greater, and the resistance generated between the second protrusion 4322 and the fifth protrusion 451 on the other of the cams 450 is greater, thereby increasing the resistance of the first swing arm 430 during rotation.

[0180] In some embodiments, Fig.14 Combined with Fig.15 , Fig.16 As shown, the first arc portion 431 and the second arc portion 432 are provided at one end of the first swing arm 430 facing the second swing arm 440, and a hollow structure is formed between the first arc portion 431 and the second arc portion 432; the damping member is located between the first arc portion 431 and the second arc portion 432, the third end face 4313 on the first arc portion 431 abuts against the damping member, and the fourth end face 4323 on the second arc portion 432 abuts against the damping member, and both the first arc portion 431 and the second arc portion 432 can rotate around the rotation center line relative to the base 410.

[0181] The structure and function of the first arc portion 431 and the second arc portion 432 in this embodiment can be referred to the above description, and will not be repeated here.

[0182] In this embodiment, the matching structure between the first arc portion 431 and the base 410 and the matching structure between the second arc portion 432 and the base 410 can refer to the above description and will not be repeated here.

[0183] In the present embodiment, since the third end face 4313 on the first arc-shaped portion 431 on the first swing arm 430 abuts against the damping member, at the same time, the fourth end face 4323 on the second arc-shaped portion 432 on the first swing arm 430 also abuts against the damping member, in this way, one end of the first swing arm 430 located in the cavity formed by the cover body 420 and the base 410 abuts against the damping member on both opposite sides along the X-axis direction, thereby increasing the damping force of the first swing arm 430 during rotation.

[0184] In some embodiments, Fig.16 As shown, a first protrusion 4312 is provided on the third end surface 4313 , and the first protrusion 4312 abuts against the damping member.

[0185] In this embodiment, the first protrusion 4312 can be made of elastic material, and the first protrusion 4312 and the third end face 4313 are integrally formed. Of course, it can be understood that the first protrusion 4312 can also be snapped onto the third end face 4313. The specific details can be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0186] In this embodiment, when the first protrusion 4312 rotates relative to the damping member, the first protrusion 4312 will be squeezed. Under the reaction force of the first protrusion 4312, the friction force between the first protrusion 4312 and the damping member increases, thereby increasing the damping force on the third end face 4313.

[0187] In some embodiments, a second protrusion 4322 is disposed on the fourth end surface 4323 , the second protrusion 4322 and the first protrusion 4312 are close to each other along the rotation center line, and the second protrusion 4322 abuts against the damping member.

[0188] In this embodiment, the second protrusion 4322 is integrally formed with the fourth end face 4323. Of course, it is understandable that the second protrusion 4322 can also be snapped onto the fourth end face 4323. The specific method can be determined based on actual conditions, and this specification does not limit this.

[0189] In this embodiment, since a second protrusion 4322 is provided on the fourth end face 4323, the second protrusion 4322 abuts against the damping element. Compared with the situation where the plane structure in the fourth end face 4323 abuts against the damping element, the friction force generated when the second protrusion 4322 abuts against the damping element is greater, thereby increasing the damping force on the fourth end face 4323.

[0190] In some embodiments, the structure of the second swing arm 440 is the same as that of the first swing arm 430. The matching structure between the second swing arm 440 and the base 410 and the matching structure between the second swing arm 440 and the damping member in this embodiment can refer to the matching structure between the first swing arm 430 and the base 410 and the matching structure between the first swing arm 430 and the damping member in the above text, and will not be repeated here.

[0191] In some embodiments, Fig.16 As shown, the damping member includes two cams 450, wherein the two cams 450 are located between the first arc-shaped portion 431 and the second arc-shaped portion 432, and the two cams 450 abut against each other; a fifth protrusion 451 is provided on the side of one of the cams 450 facing the third end surface 4313, or a fifth protrusion 451 is provided on the side of the other cam 450 facing the fourth end surface 4323; the first protrusion 4312 abuts against the fifth protrusion 451 on one of the cams 450, or the second protrusion 4322 abuts against the fifth protrusion 451 on the other cam 450. At the same time, the matching result of the first protrusion 4312 and the fifth protrusion 451, and the matching structure of the second protrusion 4322 and the fifth protrusion 451 can be described above, and will not be repeated here.

[0192] In this embodiment, the fifth protrusion 451 is integrally formed with the cam 450, or the fifth protrusion 451 is snap-connected to the cam 450, which can be specifically determined according to actual conditions and is not limited in this embodiment of the present specification.

[0193] refer to Fig.16 As shown, in this embodiment, a fifth protrusion 451 may be provided on the left side of the cam 450 located on the left, or a fifth protrusion 451 may be provided on the right side of the cam 450 located on the right. The specific method may be determined based on actual conditions, and this specification does not limit this.

[0194] When the first arc-shaped portion 431 and the second arc-shaped portion 432 on the first swing arm 430 are located in the base 410, the first protrusion 4312 on the first arc-shaped portion 431 abuts against the fifth protrusion 451 on the left side of the left cam 450, or the second protrusion 4322 abuts against the fifth protrusion 451 on the right side of the right cam 450. In this way, the contact between the first swing arm 430 and the damping member is the contact between the protrusions, and compared with the case of plane contact, the present application can increase the resistance of the first swing arm 430 when rotating.

[0195] It should be noted that the above damping member structure is only an example, and in other alternative solutions, other structures may also be used, for example, the damping member is a gear. This application does not impose any special restrictions on the specific connection structure of the damping member, as long as the above structure can achieve the purpose of this application.

[0196] In some embodiments, Fig.16 As shown, the damping member includes two cams 450, the two cams 450 are located between the first arc portion 431 and the second arc portion 432, and the two cams 450 abut against each other; at the same time, a fifth protrusion 451 is provided on the opposite sides of the two cams 450, the first protrusion 4312 abuts against the fifth protrusion 451 on one of the cams 450, and the second protrusion 4322 abuts against the fifth protrusion 451 on the other cam 450.

[0197] In this embodiment, the fifth protrusion 451 is integrally formed with the cam 450, or the fifth protrusion 451 is snap-connected to the cam 450, which can be specifically determined according to actual conditions and is not limited in this embodiment of the present specification.

[0198] refer to Fig.16 As shown, in this embodiment, a fifth protrusion 451 can be provided on the left side of the cam 450 located on the left, and at the same time, a fifth protrusion 451 is provided on the right side of the cam 450 located on the right. The specific details can be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0199] When the first arc-shaped portion 431 and the second arc-shaped portion 432 on the first swing arm 430 are located in the base 410, the first protrusion 4312 on the first arc-shaped portion 431 abuts against the fifth protrusion 451 on the left side of the left cam 450, and at the same time, the second protrusion 4322 abuts against the fifth protrusion 451 on the right side of the right cam 450. In this way, the contact between the first swing arm 430 and the damping member is the contact between the protrusions. Compared with the case of plane contact, the present application can increase the resistance of the first swing arm 430 when rotating.

[0200] In some embodiments, Fig.16 As shown, the damping member further includes an elastic member 460 , and the elastic member 460 is disposed between the two cams 450 .

[0201] In this embodiment, the elastic part 460 may refer to a part that can be deformed under the action of an external force and return to its original shape after the external force is removed. The elastic part 460 can be elastically compressed in the X-axis direction. The elastic part 460 can be made of metal or non-metallic material, such as: a leaf spring, a coil spring, a gas spring, a rubber spring, etc. The specific material can be determined based on actual conditions, and the embodiments of this specification do not limit this.

[0202] The elastic member 460 in this embodiment is located between the two cams 450. In this way, under the reaction force of the elastic member 460, the friction force between the fifth protrusion 451 on the left cam 450 and the first protrusion 4312 increases, and the friction force between the fifth protrusion 451 on the right cam 450 and the second protrusion 4322 increases. When the first swing arm 430 rotates relative to the cam 450, the resistance of the first swing arm 430 during rotation can be increased.

[0203] In some embodiments, Fig.16 As shown, connecting posts 452 are provided on opposite sides of the two cams 450 , and two ends of the elastic member 460 are correspondingly sleeved on the two connecting posts 452 on the two cams 450 .

[0204] The connecting column 452 in this embodiment can be integrally formed with the cam 450, or the connecting column 452 can be threadedly connected to the cam 450. The specific details can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0205] Since the cam 450 is provided with a connecting column 452 , it is convenient to sleeve the elastic member 460 onto the connecting column 452 , thereby facilitating the connection between the elastic member 460 and the cam 450 .

[0206] In some embodiments, Figure 6 As shown, the damping mechanism 400 further includes a fastener 470 , which is disposed at the base 410 and the cover 420 and is used to fix the cover 420 to the base 410 .

[0207] In this embodiment, the fastener 470 may be a bolt, a clip, etc., and the specific amount may be determined based on actual conditions, and this specification does not limit this.

[0208] When the cover 420 is installed on the base 410 , the cover 420 and the base 410 are connected together by the fastener 470 , so that the fixation of the cover 420 and the base 410 is facilitated.

[0209] In some embodiments, Figure 7 Combined with Figure 8 As shown, a first fixing hole 417 is provided on the base 410 , a second fixing hole 424 is provided on the cover 420 , and the fastener 470 passes through the second fixing hole 424 and then matches with the first fixing hole 417 .

[0210] In this embodiment, the first fixing hole 417 and the second fixing hole 424 are both threaded holes, and the fastener 470 is a bolt. When the cover body 420 is installed on the base 410, the bolt passes through the second fixing hole 424 and then extends into the first fixing hole 417. Finally, the bolt is tightened to fix the cover body 420 on the base 410.

[0211] Of course, it is understandable that the first fixing hole 417 and the second fixing hole 424 can also be axial holes, and the fastener 470 can be a pin. The cover body 420 can be fixed to the base 410 through the interference fit of the pin with the first fixing hole 417 and the second fixing hole 424. The specific details can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0212] The present application also provides a folding hinge 100, comprising a first fixed plate (not marked in the figure), a second fixed plate (not marked in the figure) and a damping mechanism 400 such as any one of the embodiments of the present application; wherein the first fixed plate is connected to the first swing arm 430, and the second fixed plate is connected to the second swing arm 440.

[0213] The specific structure of the damping mechanism 400 in this embodiment refers to the above-mentioned embodiment. Since all the technical solutions of all the above-mentioned embodiments are adopted in the folding hinge 100, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0214] The present application also provides an electronic device, such as Figure 1 or Figure 2 or Figure 3 As shown, it includes a first body 200, a second body 300 and a folding hinge 100 as in the embodiment of the present application, wherein the first body 200 is connected to the first fixing plate, and the second body 300 is connected to the second fixing plate.

[0215] In this embodiment, the first body 200 and the second body 300 may be the middle frame of the folding screen mobile phone, and the middle frame may be covered with a flexible screen, which can be bent at the position corresponding to the folding hinge 100.

[0216] The specific structure of the folding hinge 100 in this embodiment refers to the above embodiment. Since all the technical solutions of all the above embodiments are adopted in the electronic device, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0217] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0218] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0219] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A damping mechanism, characterized in that: The damping mechanism comprises: a base (410), a cover (420), a damping member and a rotating member; The cover body (420) is disposed on the base (410), the damping member is disposed on the base (410), and the damping member is located in a cavity formed by the cover body (420) and the base (410); One end of the rotating member is located in the cavity, and the rotating member located in the cavity abuts against the damping member, and the other end of the rotating member is located outside the cavity; The rotating member has a rotation center line, and the rotating member can rotate around the rotation center line relative to the base (410). When the rotating member rotates around the rotation center line, the resistance generated by the damping member hinders the rotation of the rotating member, wherein the rotation center line is parallel to the length direction of the base (410).

2. The damping mechanism according to claim 1, characterized in that: The rotating member comprises a first swing arm (430), one end of the first swing arm (430) is located in the cavity, and the first swing arm (430) located in the cavity abuts against the damping member, and the first swing arm (430) can rotate around the rotation center line.

3. The damping mechanism according to claim 2, characterized in that: The rotating member further comprises a second swing arm (440), wherein the second swing arm (440) and the first swing arm (430) are arranged at intervals along the width direction of the base (410); One end of the first swing arm (430) facing the second swing arm (440) is located in the cavity, and the first swing arm (430) located in the cavity abuts against the damping member, and one end of the first swing arm (430) away from the second swing arm (440) is located outside the cavity; One end of the second swing arm (440) facing the first swing arm (430) is located in the cavity, and the second swing arm (440) located in the cavity abuts against the damping member, and one end of the second swing arm (440) away from the first swing arm (430) is located outside the cavity; The first swing arm (430) and the second swing arm (440) are capable of moving closer to or farther from each other around the rotation center line.

4. The damping mechanism according to claim 3, characterized in that: A first arc-shaped portion (431) is provided at one end of the first swing arm (430) facing the second swing arm (440), and a first placement groove (413) is provided at one side of the base (410) facing the cover body (420); The first arc-shaped portion (431) is rotatably disposed in the first placement groove (413), the first end surface (4311) on the first arc-shaped portion (431) abuts against the damping member, and the first arc-shaped portion (431) can rotate relative to the first placement groove (413) around the rotation center line.

5. The damping mechanism according to claim 4, characterized in that: The first end surface (4311) is provided with a first protrusion (4312), and the first protrusion (4312) abuts against the damping member.

6. The damping mechanism according to claim 5, characterized in that: A second arc-shaped portion (432) is further provided at one end of the first swing arm (430) facing the second swing arm (440); the second arc-shaped portion (432) and the first arc-shaped portion (431) are arranged at intervals along the extension direction of the rotation centerline; The second arc-shaped portion (432) is rotatably disposed in the first placement groove (413), the second end surface (4321) on the second arc-shaped portion (432) abuts against the damping member, and the second arc-shaped portion (432) can rotate relative to the first placement groove (413) around the rotation center line.

7. The damping mechanism according to claim 6, characterized in that: A second protrusion (4322) is provided on the second end surface (4321), the second protrusion (4322) and the first protrusion (4312) are away from each other along the extension direction of the rotation center line, and the second protrusion (4322) is in contact with the damping member.

8. The damping mechanism according to claim 7, characterized in that: A groove (433) is formed between the first arc-shaped portion (431) and the second arc-shaped portion (432); A first arc-shaped block (421) is provided on one side of the cover (420) facing the base (410); The first arc-shaped block (421) is rotatably disposed in the groove (433), and the groove (433) can rotate relative to the first arc-shaped block (421) around the rotation center line.

9. The damping mechanism according to claim 8, characterized in that: The damping member comprises a cam (450); a first fixing plate (411) and a second fixing plate (412) are arranged on the base (410) at intervals along the extension direction of the rotation center line; the first placement groove (413) is formed between the first fixing plate (411) and the second fixing plate (412); The cam (450) is arranged on the base (410), and the cam (450) is located on the side of the first fixing plate (411) away from the second fixing plate (412), and a fifth protrusion (451) is arranged on the cam (450); the first protrusion (4312) abuts against the fifth protrusion (451), and the first protrusion (4312) can rotate around the rotation center line relative to the fifth protrusion (451).

10. The damping mechanism according to claim 9, characterized in that: The damping member further comprises a third protrusion (4121), and the third protrusion (4121) is arranged on a side of the second fixing plate (412) facing the first fixing plate (411); The third protrusion (4121) abuts against the second protrusion (4322), and the second protrusion (4322) can rotate around the rotation center line relative to the third protrusion (4121).

11. The damping mechanism according to claim 10, characterized in that: The structure of the second swing arm (440) is the same as that of the first swing arm (430); The connection structure between the second swing arm (440) and the base (410) and the cover (420) is the same as the connection structure between the first swing arm (430) and the base (410) and the cover (420).

12. The damping mechanism according to claim 10, characterized in that: The damping member further comprises an elastic member (460), wherein the elastic member (460) is located in the cavity, one end of the elastic member (460) abuts against a side of the cam (450) facing away from the first fixing plate (411), and the other end of the elastic member (460) abuts against the cover body (420) or the base (410).

13. The damping mechanism according to claim 12, characterized in that: A connecting column (452) is provided on one side of the cam (450) facing the elastic member (460), and one end of the elastic member (460) facing the cam (450) is sleeved on the connecting column (452) and abuts against the cam (450).

14. The damping mechanism according to claim 12 or 13, characterized in that: A baffle (423) is provided on one side of the cover body (420) facing the base (410), and one end of the elastic member (460) away from the cam (450) abuts against the baffle (423).

15. The damping mechanism according to any one of claims 9 to 13, characterized in that: A limiting groove (453) is provided on the cam (450) along the extension direction of the rotation center line, and a limiting block is provided on a side of the cover body (420) facing the base (410), and the limiting block cooperates with the limiting groove (453); Under the condition that the limiting block is located in the limiting groove (453), the cam (450) can move relative to the base (410) along the extension direction of the rotation center line.

16. The damping mechanism according to claim 8, characterized in that: The damping member comprises two cams (450), each of which is provided with a fifth protrusion (451); a first fixing plate (411) and a second fixing plate (412) are arranged on the base (410) at intervals along the extension direction of the rotation center line, and the first placement groove (413) is formed between the first fixing plate (411) and the second fixing plate (412); One of the cams (450) is located on a side of the first fixing plate (411) away from the second fixing plate (412), and the other of the cams (450) is located on a side of the second fixing plate (412) away from the first fixing plate (411); The first protrusion (4312) abuts against the fifth protrusion (451) on one of the cams (450), and the second protrusion (4322) abuts against the fifth protrusion (451) on another of the cams (450).

17. The damping mechanism according to claim 16, characterized in that: The damping member further comprises at least two elastic members (460), and the elastic members (460) are located in the cavity; One end of one of the elastic members (460) abuts against a side of one of the cams (450) that is away from the first fixing plate (411), and the other end abuts against the cover body (420); One end of another of the elastic members (460) abuts against a side of another of the cams (450) that is away from the second fixing plate (412), and the other end abuts against the cover body (420).

18. The damping mechanism according to claim 3, characterized in that: One end of the first swing arm (430) facing the second swing arm (440) is provided with a first arc-shaped portion (431) and a second arc-shaped portion (432), and a hollow structure is formed between the first arc-shaped portion (431) and the second arc-shaped portion (432); The damping member is located between the first arc-shaped portion (431) and the second arc-shaped portion (432); the third end surface (4313) on the first arc-shaped portion (431) abuts against the damping member; the fourth end surface (4323) on the second arc-shaped portion (432) abuts against the damping member; and both the first arc-shaped portion (431) and the second arc-shaped portion (432) are capable of rotating around the rotation center line relative to the base (410).

19. The damping mechanism according to claim 18, characterized in that: The third end surface (4313) is provided with a first protrusion (4312), and the first protrusion (4312) abuts against the damping member.

20. The damping mechanism according to claim 19, characterized in that: The fourth end surface (4323) is provided with a second protrusion (4322), the second protrusion (4322) and the first protrusion (4312) are close to each other along the extension direction of the rotation center line, and the second protrusion (4322) abuts against the damping member.

21. The damping mechanism according to claim 20, characterized in that: The structure of the second swing arm (440) is the same as that of the first swing arm (430).

22. The damping mechanism according to claim 21, characterized in that: The damping member comprises two cams (450), the two cams (450) are located between the first arc-shaped portion (431) and the second arc-shaped portion (432), and the two cams (450) abut against each other; A fifth protrusion (451) is provided on one side of the cams (450) facing the third end surface (4313), or a fifth protrusion (451) is provided on another side of the cams (450) facing the fourth end surface (4323); The first protrusion (4312) abuts against the fifth protrusion (451) on one of the cams (450), or the second protrusion (4322) abuts against the fifth protrusion (451) on another of the cams (450).

23. The damping mechanism according to claim 21, characterized in that: The damping member comprises two cams (450), the two cams (450) are located between the first arc-shaped portion (431) and the second arc-shaped portion (432), and the two cams (450) abut against each other; A fifth protrusion (451) is provided on the opposite sides of the two cams (450), the first protrusion (4312) abuts against the fifth protrusion (451) on one of the cams (450), and the second protrusion (4322) abuts against the fifth protrusion (451) on the other of the cams (450).

24. The damping mechanism according to claim 22 or 23, characterized in that: The damping member further comprises an elastic member (460), and the elastic member (460) is arranged between the two cams (450).

25. The damping mechanism according to claim 24, characterized in that: Connecting posts (452) are provided on opposite sides of the two cams (450), and two ends of the elastic member (460) are correspondingly sleeved on the two connecting posts (452) on the two cams (450).

26. The damping mechanism according to claim 1, characterized in that: The damping mechanism further comprises a fastener (470), wherein the fastener (470) is arranged on the base (410) and the cover (420) and is used to fix the cover (420) to the base (410).

27. The damping mechanism according to claim 26, characterized in that: The base (410) is provided with a first fixing hole (417), the cover (420) is provided with a second fixing hole (424), and the fastener (470) passes through the second fixing hole (424) and then cooperates with the first fixing hole (417).

28. A folding hinge, characterized in that: comprising a first fixing plate, a second fixing plate and a damping mechanism as claimed in any one of claims 3 to 27; The first fixing plate is connected to the first swing arm (430), and the second fixing plate is connected to the second swing arm (440).

29. An electronic device, characterized in that: comprising a first body, a second body and a folding hinge as claimed in claim 28; The first body is connected to the first fixing plate, and the second body is connected to the second fixing plate.

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