Hinge mechanism and electronic device

Abstract

The invention discloses a hinge mechanism and electronic equipment, and belongs to the technical field of electronic products, the hinge mechanism comprises a hinge support, a rotating shaft, a first swing arm assembly, a first damping structure and a second damping structure, the hinge support comprises a rotating shaft mounting seat, and the first swing arm assembly comprises a first swing arm, a second swing arm and a connecting part; under the condition that the connecting part is not broken, a first gap is formed between the first swing arm and the rotating shaft mounting seat, and a second gap is formed between the second swing arm and the rotating shaft mounting seat; under the condition that the connecting part is broken, the first damping structure drives the first swing arm and the rotating shaft mounting seat to be in axial fit connection with the rotating shaft, and the second damping structure drives the second swing arm and the rotating shaft mounting seat to be in axial fit connection with the rotating shaft; under the condition that at least one of the abrasion loss of the first damping structure and the abrasion loss of the second damping structure is larger than or equal to the preset abrasion loss and the folding frequency of the hinge mechanism is larger than or equal to the preset frequency, the connecting part is broken.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic products, and specifically relates to a hinge mechanism and an electronic device. Background Art

[0002] The hinge mechanism in the related art includes a rotating shaft, a rotating shaft bracket, a swing arm, a cam structure and a spring sleeved on the rotating shaft, and the opening and closing damping force of the hinge mechanism is mainly composed of the cam torque of the cam structure and the end surface torque of the rotating shaft bracket and the swing arm. However, during the long-term use of the hinge mechanism, the cam structure will be worn to a certain extent, and the worn cam structure will reduce the cam torque, thereby reducing the opening and closing damping force of the hinge mechanism, and ultimately affecting the opening and closing effect of folding terminals such as mobile phones. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a hinge mechanism and an electronic device, which can solve the problem in the related art that the torque is reduced due to cam wear, thereby shortening the service life of the hinge mechanism.

[0004] The embodiment of the present application provides a hinge mechanism, comprising: a hinge bracket, a rotating shaft, a first swing arm assembly, a first damping structure and a second damping structure, wherein the hinge bracket comprises a rotating shaft mounting seat, the rotating shaft is arranged on the rotating shaft mounting seat, the first swing arm assembly comprises a first swing arm, a second swing arm and a connecting portion for connecting the first swing arm and the second swing arm, the first damping structure, the first swing arm, the second swing arm and the second damping structure are sequentially sleeved on the rotating shaft, and the rotating shaft mounting seat is partially located between the first swing arm and the second swing arm;

[0005] The first damping structure and the second damping structure are used to provide a rotation damping force for the rotation of the first swing arm assembly;

[0006] When the connecting portion is not broken, a first gap is formed between the first swing arm and the rotating shaft mounting seat, and a second gap is formed between the second swing arm and the rotating shaft mounting seat;

[0007] In the case where the connecting portion is broken, the first damping structure drives the first swing arm and the shaft mounting seat to be axially fitted and connected to the shaft, and the second damping structure drives the second swing arm and the shaft mounting seat to be axially fitted and connected to the shaft;

[0008] Wherein, when at least one of the wear amount of the first damping structure and the wear amount of the second damping structure is greater than or equal to a preset wear amount, and the number of folding times of the hinge mechanism is greater than or equal to a preset number, the connecting portion breaks.

[0009] In a second aspect, an embodiment of the present application provides an electronic device, comprising the hinge mechanism described in the first aspect.

[0010] In an embodiment of the present application, a connecting portion connecting the first swing arm and the second swing arm is provided so that when the connecting portion is not broken, the first damping structure and the second damping structure can provide the rotational damping force required by the first swing arm assembly; after the connecting portion is broken, the first damping structure can drive the first swing arm and the shaft mounting seat to be axially fitted and connected to the shaft, and the second damping structure can drive the second swing arm and the shaft mounting seat to be axially fitted and connected to the shaft, that is, the contact friction between the first swing arm and the shaft mounting seat and the contact friction between the second swing arm and the shaft mounting seat can be used to compensate for the influence of the wear of the first damping structure and the second damping structure on the folding damping effect of the hinge mechanism, so that the rotational damping force of the first swing arm assembly can always be maintained at a higher level, thereby achieving the purpose of extending the service life of the hinge mechanism.

[0011] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0013] Figure 1 It is one of the structural schematic diagrams of the hinge mechanism provided in the embodiment of the present application;

[0014] Figure 2 is along Figure 1 Sectional view along line AA;

[0015] Figure 3 yes Figure 2 An enlarged view of the circled section B;

[0016] Figure 4 This is the second structural schematic diagram of the hinge mechanism provided in the embodiment of the present application;

[0017] Figure 5 It is a schematic structural diagram of the first swing arm assembly provided in an embodiment of the present application. DETAILED DESCRIPTION

[0018] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0019] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0020] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In the description of this 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, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] like Figures 1 to 5As shown, the embodiment of the present application provides a hinge mechanism, including: a hinge bracket 10, a rotating shaft 20, a first swing arm assembly 30, a first damping structure 40 and a second damping structure 50, the hinge bracket 10 includes a rotating shaft mounting seat 11, the rotating shaft 20 is arranged on the rotating shaft mounting seat 11, the first swing arm assembly 30 includes a first swing arm 31, a second swing arm 32 and a connecting portion 33 for connecting the first swing arm 31 and the second swing arm 32, the first damping structure 40, the first swing arm 31, the second swing arm 32 and the second damping structure 50 are sequentially sleeved on the rotating shaft 20, and the rotating shaft mounting seat 11 is partially located between the first swing arm 31 and the second swing arm 32;

[0023] The first swing arm assembly 30 can be rotatably connected to the hinge bracket 10 via the rotating shaft 20, and the first damping structure 40 and the second damping structure 50 are used to provide a rotation damping force for the rotation of the first swing arm assembly 30;

[0024] When the connecting portion 33 is not broken, a first gap 61 is formed between the first swing arm 31 and the shaft mounting seat 11, and a second gap 62 is formed between the second swing arm 32 and the shaft mounting seat 11;

[0025] When the connecting portion 33 is broken, the first damping structure 40 drives the first swing arm 31 to be axially fitted and connected to the rotating shaft mounting seat 11 on the rotating shaft 20, and the second damping structure 50 drives the second swing arm 32 to be axially fitted and connected to the rotating shaft mounting seat 11 on the rotating shaft 20;

[0026] When at least one of the wear amount of the first damping structure 40 and the wear amount of the second damping structure 50 is greater than or equal to a preset wear amount and the number of folding times of the hinge mechanism is greater than or equal to a preset number, the connecting portion 33 is broken.

[0027] The above-mentioned connecting portion 33 can be understood as a supporting connecting structure for connecting and supporting the first swing arm 31 and the second swing arm 32. If the connecting portion 33 is not broken, the connecting portion 33 can connect and support the first swing arm 31 and the second swing arm 32 to avoid the first swing arm 31 and the second swing arm 32 being fitted together with the shaft mounting seat 11, and forming a first gap 61 between the first swing arm 31 and the shaft mounting seat 11, and forming a second gap 62 between the second swing arm 32 and the shaft mounting seat 11.

[0028] Since the first damping structure 40 can provide a force in a first direction to the first swing arm 31, and the second damping structure 50 can provide a force in a second direction to the second swing arm 32, the first direction is opposite to the second direction, and the first direction is the direction from the first swing arm 31 to the second swing arm and parallel to the axial direction of the rotating shaft 20, that is, during the rotation of the first swing arm assembly 30 relative to the hinge bracket 10, the first damping structure 40 and the second damping structure 50 will both squeeze the connecting portion 33 used to connect the first swing arm 31 and the second swing arm 32, thereby making the connecting portion 33 prone to failure and fracture, that is, during the folding process of the hinge mechanism, when the hinge mechanism is folded a certain number of times, the connecting portion 33 will fail and fracture.

[0029] Moreover, after the connecting portion 33 is broken, the first damping structure 40 can drive the first swing arm 31 to be axially fitted and connected with the rotating shaft mounting seat 11 on the rotating shaft 20, and the second damping structure 50 can drive the second swing arm 32 to be axially fitted and connected with the rotating shaft mounting seat 11 on the rotating shaft 20, so that the relative rotation of the first swing arm 31 and the rotating shaft mounting seat 11 not only needs to overcome the damping force provided by the first damping structure 40, but also needs to overcome the contact friction between the first swing arm 31 and the rotating shaft mounting seat 11; accordingly, the relative rotation of the second swing arm 32 and the rotating shaft mounting seat 11 not only needs to overcome the damping force provided by the second damping structure 50, but also needs to overcome the contact friction between the second swing arm 32 and the rotating shaft mounting seat 11.

[0030] In addition, since the first damping structure 40 and the second damping structure 50 will be worn during the folding process of the hinge mechanism, the rotational damping force provided by the first damping structure 40 and the second damping structure 50 to the rotation of the first swing arm assembly 30 will easily become smaller, thereby affecting the folding damping effect of the hinge mechanism.

[0031] In the present application, in order to reduce the influence of the wear of the first damping structure 40 and the second damping structure 50 on the folding damping effect of the hinge mechanism, a connecting portion 33 is provided to connect and support the first swing arm 31 and the second swing arm 32. In this way, when the hinge mechanism is folded a certain number of times and at least one of the wear amount of the first damping structure 40 and the wear amount of the second damping structure 50 is greater than or equal to the preset wear amount, the connecting portion 33 will be broken, so that the first damping structure 40 can drive the first swing arm 31 and the shaft mounting seat 11 to rotate on the shaft. 20 is axially fitted and connected, and the second damping structure 50 can drive the second swing arm 32 to be axially fitted and connected with the shaft mounting seat 11 on the shaft 20, that is, the contact friction between the first swing arm 31 and the shaft mounting seat 11 and the contact friction between the second swing arm 32 and the shaft mounting seat 11 can compensate for the influence of the wear of the first damping structure 40 and the second damping structure 50 on the folding damping effect of the hinge mechanism, so that the rotational damping force of the first swing arm assembly 30 can always be maintained at a higher level, thereby achieving the purpose of extending the service life of the hinge mechanism.

[0032] In some embodiments, the wear amount of the first damping structure 40 and the wear amount of the second damping structure 50 have a certain linear relationship with the number of folding times of the hinge mechanism, that is, the more the hinge mechanism is folded, the greater the wear amount of the first damping structure 40 and the second damping structure 50.

[0033] In addition, since the fracture of the connecting portion 33 is also related to the number of folding times of the hinge mechanism, the above-mentioned preset number of times can be set based on the failure fracture characteristics of the connecting portion 33, that is, when the number of folding times of the hinge mechanism reaches the preset number, the connecting portion 33 will spontaneously fracture.

[0034] In some embodiments, a relationship between the above-mentioned preset number of times and the preset amount of wear can also be established, that is, when the hinge mechanism is folded a preset number of times, at least one of the amount of wear of the first damping structure 40 and the amount of wear of the second damping structure 50 will be greater than or equal to the preset amount of wear, so that the connecting portion 33 will spontaneously break, thereby achieving the contact friction between the first swing arm 31 and the rotating shaft mounting seat 11 and the contact friction between the second swing arm 32 and the rotating shaft mounting seat 11 to compensate for the influence of the wear of the first damping structure 40 and the second damping structure 50 on the folding damping effect of the hinge mechanism, so that the rotational damping force of the first swing arm assembly 30 can always be maintained at a higher level, thereby achieving the purpose of extending the service life of the hinge mechanism.

[0035] In some embodiments, the above-mentioned preset wear amount can be understood as the wear amount of the first damping structure 40 and the second damping structure 50 when the damping force that can be provided by the first damping structure 40 and the second damping structure 50 drops sharply, that is, when the wear amount of the first damping structure 40 and the second damping structure 50 reaches the preset wear amount, the damping force that can be provided by the first damping structure 40 and the second damping structure 50 will drop sharply.

[0036] In some embodiments, if the wear of the first damping structure 40 and the second damping structure 50 reaches a preset wear amount after the hinge mechanism is opened and closed 50,000 times, the fatigue failure number of the connection portion 33 can be set to 50,000 times, that is, when the hinge mechanism is folded 50,000 times, the connection portion 33 will break, that is, when the first swing arm assembly 30 is opened and closed 50,000 times, the connection portion 33 will break, so that the first damping structure 40 can drive the first swing arm 31 and the shaft mounting seat 11 to rotate axially with the shaft 20. The second damping structure 50 can drive the second swing arm 32 to be axially fitted with the rotating shaft mounting seat 11 on the rotating shaft 20, that is, the contact friction between the first swing arm 31 and the rotating shaft mounting seat 11 and the contact friction between the second swing arm 32 and the rotating shaft mounting seat 11 can compensate for the influence of the wear of the first damping structure 40 and the second damping structure 50 on the folding damping effect of the hinge mechanism, so that the rotational damping force of the first swing arm assembly 30 can always be maintained at a higher level, thereby achieving the purpose of extending the service life of the hinge mechanism.

[0037] In this embodiment, a connecting portion 33 connecting the first swing arm 31 and the second swing arm 32 is provided so that when the connecting portion 33 is not broken, the first damping structure 40 and the second damping structure 50 can provide the rotational damping force required by the first swing arm assembly 30; after the connecting portion 33 is broken, the first damping structure 40 can drive the first swing arm 31 to be axially fitted and connected to the rotating shaft mounting seat 11 on the rotating shaft 20, and the second damping structure 50 can drive the second swing arm 32 to be axially fitted and connected to the rotating shaft mounting seat 11 on the rotating shaft 20, that is, the contact friction between the first swing arm 31 and the rotating shaft mounting seat 11 and the contact friction between the second swing arm 32 and the rotating shaft mounting seat 11 can compensate for the influence of the wear of the first damping structure 40 and the second damping structure 50 on the folding damping effect of the hinge mechanism, so that the rotational damping force of the first swing arm assembly 30 can always be maintained at a higher level, thereby achieving the purpose of extending the service life of the hinge mechanism.

[0038] In some embodiments, the shaft mounting seat 11 includes a first end surface and a second end surface that are disposed opposite to each other, the first end surface is the end surface of the shaft mounting seat 11 that is away from the second damping structure 50, and the second end surface is the end surface of the shaft mounting seat 11 that faces the second damping structure 50;

[0039] When the connecting portion 33 is not broken, a first gap 61 is formed between the first swing arm 31 and the first end surface, and a second gap 62 is formed between the second swing arm 32 and the second end surface.

[0040] In the case where the connecting portion 33 is broken, the first damping structure 40 can drive the first swing arm 31 to be axially fitted and connected with the first end face of the rotating shaft 20, that is, the contact friction between the first swing arm 31 and the rotating shaft mounting seat 11 can be understood as the end face contact friction between the first swing arm 31 and the first end face, that is, during the relative rotation process between the first swing arm 31 and the rotating shaft mounting seat 11, it is necessary not only to overcome the damping force provided by the first damping structure 40, but also to overcome the end face contact friction between the first swing arm 31 and the first end face; accordingly, the second damping structure 50 can drive the second swing arm 32 to be axially fitted and connected with the first end face of the rotating shaft 20. The fitting connection, that is, the contact friction between the second swing arm 32 and the shaft mounting seat 11 can be understood as the end surface contact friction between the second swing arm 32 and the second end surface, that is, in the relative rotation process between the second swing arm 32 and the shaft mounting seat 11, it is necessary not only to overcome the damping force provided by the second damping structure 50, but also to overcome the end surface contact friction between the second swing arm 32 and the second end surface, so as to compensate for the rotational torque lost by the first damping structure 40 and the second damping structure 50, and make the rotational damping force of the first swing arm assembly 30 always maintain at a higher level, so as to achieve the purpose of extending the service life of the hinge mechanism.

[0041] In some embodiments, the connection portion 33 includes a first connection end connected to the first swing arm 31 and a second connection end connected to the second swing arm 32, the first connection end is connected to the end of the first swing arm 31 away from the rotating shaft, the second connection end is connected to the end of the second swing arm 32 away from the rotating shaft, and the connection portion 33 is arranged opposite to the rotating shaft mounting seat 11. In this way, when the connection portion 33 is broken, the first swing arm 31 can move in the first direction under the action of the first damping structure 40, so that the first swing arm 31 and the rotating shaft mounting seat 11 are axially fitted and connected to the rotating shaft 20; the second swing arm 32 can move in the second direction under the action of the second damping structure 50, so that the second swing arm 32 and the rotating shaft mounting seat 11 are axially fitted and connected to the rotating shaft 20.

[0042] In some embodiments, the first swing arm 31 , the connecting portion 33 and the second swing arm 32 may be an integral structure, for example, the first swing arm assembly 30 including the first swing arm 31 , the second swing arm 32 and the connecting portion 33 may be formed by injection molding.

[0043] Moreover, the connecting portion 33 may be a weak connection structure for connecting the first swing arm 31 and the second swing arm 32, which will break automatically when the hinge mechanism is folded a certain number of times, that is, the first swing arm assembly 30 is opened and closed a certain number of times.

[0044] In some embodiments, the connection portion 33 may be a connection structure having fatigue failure characteristics, that is, the connection portion 33 may be a connection structure having a self-rupture characteristic after fatigue failure.

[0045] In some embodiments, the first damping structure 40 includes a first elastic member 41 and a first cam structure 42. The first elastic member 41, the first cam structure 42 and the first swing arm 31 are sequentially sleeved on the rotating shaft 20, and the first elastic member 41 is connected to the first swing arm 31 through the first cam structure 42. The first elastic member 41 and the first cam structure 42 are used to provide a rotation damping force for the rotation of the first swing arm 31.

[0046] The second damping structure 50 includes a second elastic member 51 and a second cam structure 52. The second elastic member 51, the second cam structure 52 and the second swing arm 32 are sequentially sleeved on the rotating shaft 20, and the second elastic member 51 is connected to the second swing arm 32 through the second cam structure 52. The second elastic member 51 and the second cam structure 52 are used to provide rotational damping force for the rotation of the second swing arm 32.

[0047] In some embodiments, the hinge mechanism further includes a second swing arm assembly 70, and the second swing arm assembly 70 is rotatably connected to the shaft mounting seat 11 via the shaft 20;

[0048] The first damping structure 40 also includes a third cam structure 43, and the first end of the first elastic member 41 is connected to the cam structure of the first swing arm 31 through the first cam structure 42, and the second end of the first elastic member 41 is connected to the cam structure of the second swing arm assembly 70 through the third cam structure 43. That is, through the cam connection between the first cam structure 42 and the cam structure of the first swing arm 31, and through the cam connection between the third cam structure 43 and the cam structure of the second swing arm assembly 70, the synchronous rotation of the first swing arm assembly 30 and the second swing arm assembly 70 can be achieved, that is, during the synchronous rotation of the first swing arm assembly 30 and the second swing arm assembly 70, the rotation of the first swing arm assembly 30 needs to overcome the elastic damping force provided by the first elastic member 41, so that the folding operation of the hinge mechanism has a certain folding damping effect, thereby improving the opening and closing feel of the hinge mechanism.

[0049] In some embodiments, the first swing arm 31 further includes a fourth cam structure 311 adapted to the first cam structure 42 , and through the cooperation between the first cam structure 42 and the fourth cam structure 311 , the first damping structure 40 can provide the rotational damping force required for the rotation of the first swing arm 31 .

[0050] In some embodiments, the wear amount of the first damping structure 40 includes at least one of the cam wear amount of the first cam structure 42 and the cam wear amount of the third cam structure 43 .

[0051] The cam wear amount of the first cam structure 42 may be understood as the wear amount caused by the cam motion of the first cam structure 42 and the fourth cam structure 311 .

[0052] The cam wear amount of the third cam structure 43 mentioned above can be understood as the wear amount caused by the cam movement of the cam structures of the first cam structure 42 and the second swing arm assembly 70 .

[0053] Among them, when the cam wear amount of the first cam structure 42 and / or the cam wear amount of the third cam structure 43 changes from quantitative change to qualitative change, the pre-compression space of the first elastic member 41 will increase, which will cause the elastic force that the first elastic member 41 can provide to decrease, thereby reducing the elastic damping force that the first damping structure 40 can provide.

[0054] In some embodiments, the second swing arm 32 further includes a fifth cam structure 321 adapted to the second cam structure 52 , and through the cooperation between the second cam structure 52 and the fifth cam structure 321 , the second damping structure 50 can provide the rotational damping force required for the rotation of the second swing arm 32 .

[0055] In some embodiments, the wear amount of the second damping structure 50 includes the cam wear amount of the second cam structure 52 .

[0056] The cam wear amount of the second cam structure 52 mentioned above can be understood as the wear amount caused by the cam motion of the second cam structure 52 and the fifth cam structure 321 .

[0057] When the cam wear of the second cam structure 52 changes from quantitative change to qualitative change, the pre-compression space of the second elastic member 51 will increase, which will cause the elastic force provided by the second elastic member 51 to decrease, thereby reducing the elastic damping force provided by the second damping structure 50.

[0058] In this embodiment, when at least one of the wear amount of the first damping structure 40 and the wear amount of the second damping structure 50 is greater than or equal to the preset wear amount, and the number of folding times of the hinge mechanism is greater than or equal to the preset number, the connection portion 33 will be caused to break, and after the connection portion 33 breaks, the first damping structure 40 can drive the first swing arm 31 and the shaft mounting seat 11 to be axially fitted and connected to the shaft 20, and the second damping structure 50 can drive the second swing arm 32 and the shaft mounting seat 11 to be axially fitted and connected to the shaft 20, that is, the contact friction between the first swing arm 31 and the shaft mounting seat 11 and the contact friction between the second swing arm 32 and the shaft mounting seat 11 can be used to compensate for the influence of the wear of the first damping structure 40 and the second damping structure 50 on the folding damping effect of the hinge mechanism, so that the rotational damping force of the first swing arm assembly 30 can always be maintained at a higher level, thereby achieving the purpose of extending the service life of the hinge mechanism.

[0059] In some embodiments, the first elastic member 41 and the second elastic member 51 may be springs sleeved on the rotating shaft 20 .

[0060] In some embodiments, the first elastic member 41 and the second elastic member 51 can be sleeved on an elastic structure such as an elastic foam layer on the rotating shaft 20 .

[0061] In some embodiments, the widths of the first gap 61 and the second gap 62 are the same, so as to improve the synchronization of the rotation of the first swing arm 31 and the second swing arm 32 , thereby improving the folding effect of the hinge mechanism.

[0062] In some embodiments, one end of the second swing arm assembly 70 is connected to the hinge bracket 10 via the rotating shaft 20, and the other end of the second swing arm assembly 70 can be connected to the swing arm bracket.

[0063] Among them, the above-mentioned swing arm bracket is a component on the hinge mechanism used to connect with the folding part of the folding electronic device, so that the folding electronic device can be opened and closed through the hinge mechanism, thereby enabling the folding electronic device to switch between the unfolded state and the folded state.

[0064] It can be understood that the hinge mechanism may include two first swing arm assemblies 30, two rotating shafts 20 and two second swing arm assemblies 70, so that the two folding parts of the foldable electronic device are respectively connected to the hinge mechanism, thereby realizing the folding operation of the foldable electronic device.

[0065] In some embodiments, the foldable electronic device includes a first foldable portion, a second foldable portion and the above-mentioned hinge mechanism, and the first foldable portion and the second foldable portion are both rotatably connected to the above-mentioned hinge mechanism, and enable the foldable electronic device to switch between an unfolded state and a folded state.

[0066] In some embodiments, the folding electronic device is in the above-mentioned unfolded state, which can be understood as the unfolding angle of the first folding part and the second folding part is 180°; the folding electronic device is in the above-mentioned folded state, which can be understood as the unfolding angle of the first folding part and the second folding part is 0°.

[0067] An embodiment of the present application also provides an electronic device, comprising the above-mentioned hinge mechanism.

[0068] It should be noted that the implementation method of the above-mentioned hinge mechanism embodiment is also applicable to the embodiment of the electronic device and can achieve the same technical effect, which will not be described in detail here.

[0069] The electronic device may be a foldable mobile phone, a laptop computer or other foldable electronic device.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0071] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A hinge mechanism, characterized in that: include: A hinge bracket, a rotating shaft, a first swing arm assembly, a first damping structure and a second damping structure, wherein the hinge bracket includes a rotating shaft mounting seat, the rotating shaft is arranged on the rotating shaft mounting seat, the first swing arm assembly includes a first swing arm, a second swing arm and a connecting portion for connecting the first swing arm and the second swing arm, the first damping structure, the first swing arm, the second swing arm and the second damping structure are sequentially sleeved on the rotating shaft, and the rotating shaft mounting seat is partially located between the first swing arm and the second swing arm; The first damping structure and the second damping structure are used to provide a rotation damping force for the rotation of the first swing arm assembly; When the connecting portion is not broken, a first gap is formed between the first swing arm and the rotating shaft mounting seat, and a second gap is formed between the second swing arm and the rotating shaft mounting seat; In the case where the connecting portion is broken, the first damping structure drives the first swing arm and the shaft mounting seat to be axially fitted and connected to the shaft, and the second damping structure drives the second swing arm and the shaft mounting seat to be axially fitted and connected to the shaft; Wherein, when at least one of the wear amount of the first damping structure and the wear amount of the second damping structure is greater than or equal to a preset wear amount, and the number of folding times of the hinge mechanism is greater than or equal to a preset number, the connecting portion breaks.

2. The hinge mechanism according to claim 1, characterized in that: The first damping structure includes a first elastic member and a first cam structure, wherein the first elastic member, the first cam structure and the first swing arm are sequentially sleeved on the rotating shaft, and the first elastic member is connected to the first swing arm through the first cam structure, and the first elastic member and the first cam structure are used to provide a rotation damping force for the rotation of the first swing arm; The second damping structure includes a second elastic member and a second cam structure. The second elastic member, the second cam structure and the second swing arm are sequentially mounted on the rotating shaft, and the second elastic member is connected to the second swing arm through the second cam structure. The second elastic member and the second cam structure are used to provide rotational damping force for the rotation of the second swing arm.

3. The hinge mechanism according to claim 2, characterized in that: The hinge mechanism further comprises a second swing arm assembly, and the second swing arm assembly is rotatably connected to the rotation shaft mounting seat via the rotation shaft; The first damping structure also includes a third cam structure, the first end of the first elastic member is connected to the cam structure of the first swing arm through the first cam structure, and the second end of the first elastic member is connected to the cam structure of the second swing arm assembly through the third cam structure.

4. The hinge mechanism according to claim 3, characterized in that: The wear amount of the first damping structure includes at least one of a cam wear amount of the first cam structure and a cam wear amount of the third cam structure.

5. The hinge mechanism according to claim 2, characterized in that: The wear amount of the second damping structure includes the cam wear amount of the second cam structure.

6. The hinge mechanism according to any one of claims 2 to 5, characterized in that: The first elastic member and the second elastic member are both springs.

7. The hinge mechanism according to any one of claims 1 to 5, characterized in that: The connecting portion includes a first connecting end connected to the first swing arm and a second connecting end connected to the second swing arm, the first connecting end is connected to the end of the first swing arm away from the rotating shaft, the second connecting end is connected to the end of the second swing arm away from the rotating shaft, and the connecting portion is arranged opposite to the rotating shaft mounting seat.

8. The hinge mechanism according to any one of claims 1 to 5, characterized in that: The first swing arm, the connecting portion and the second swing arm are an integrated structure.

9. The hinge mechanism according to any one of claims 1 to 5, characterized in that: The first gap and the second gap have the same width.

10. An electronic device, characterized in that: Comprising the hinge mechanism as claimed in any one of claims 1 to 9.

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