Hinge mechanism and electronic equipment

Abstract

The present application discloses a hinge mechanism and an electronic device, belonging to the technical field of electronic products. The hinge mechanism includes: a hinge bracket, a rotating shaft, a first swing arm assembly, a first damping structure and a second damping structure. The hinge bracket includes a rotating shaft mounting seat. The first swing arm assembly includes a first swing arm, a second swing arm and a connecting portion. When the connecting portion is not broken, a first gap is provided between the first swing arm and the rotating shaft mounting seat, and a second gap is provided between the second swing arm and the rotating shaft mounting seat. When the connecting portion is broken, the first damping structure drives the first swing arm and the rotating shaft mounting seat to be axially fitted and connected to the rotating shaft, and the second damping structure drives the second swing arm and the rotating shaft mounting seat to be axially fitted and connected to the rotating shaft. 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.

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 mounted on the rotating shaft, a swing arm, a cam structure, and a spring. The hinge mechanism's opening and closing damping force is primarily composed of the cam torque of the cam structure and the end surface torque of the rotating shaft bracket and swing arm. However, over time, the cam structure will wear out. This wear reduces the cam torque, which in turn reduces the hinge mechanism's opening and closing damping force, ultimately affecting the opening and closing performance of foldable devices 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 that 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 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. The hinge bracket includes a rotating shaft mounting base, the rotating shaft is disposed on the rotating shaft mounting base, 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 base 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 rotational 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 rotating shaft mounting seat to be axially fitted and connected to the rotating shaft, and the second damping structure can drive the second swing arm and the rotating shaft mounting seat to be axially fitted and connected to the rotating shaft, that is, the contact friction between the first swing arm and the rotating shaft mounting seat and the contact friction between the second swing arm and the rotating 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 obvious from the description below, or will be learned through 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 This is one of the structural diagrams of the hinge mechanism provided in the embodiment of the present application;

[0014] Figure 2 It is along Figure 1 Cross-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 diagram of the hinge mechanism provided in the embodiment of the present application;

[0017] Figure 5 This 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. 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 are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0019] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[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 device or element referred to 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 expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the 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 base 11, and the rotating shaft 20 is disposed on the rotating shaft mounting base 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 base 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 rotational 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 rotating shaft mounting seat 11 , and a second gap 62 is formed between the second swing arm 32 and the rotating shaft mounting seat 11 ;

[0025] When the connecting portion 33 is broken, the first damping structure 40 drives the first swing arm 31 to axially fit and connect with the rotating shaft mounting seat 11 on the rotating shaft 20 , and the second damping structure 50 drives the second swing arm 32 to axially fit and connect with 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 breaks.

[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 from being attached to the rotating shaft mounting seat 11, and forming a first gap 61 between the first swing arm 31 and the rotating shaft mounting seat 11, and forming a second gap 62 between the second swing arm 32 and the rotating 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 for connecting 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 number of folding times of the hinge mechanism reaches a certain number, the connecting portion 33 will fail and fracture.

[0029] Moreover, after the connecting portion 33 breaks, 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, 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 wear 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, 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, 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.

[0032] In some embodiments, the wear of the first damping structure 40 and the wear 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 times the hinge mechanism is folded, the greater the wear of the first damping structure 40 and the wear of 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 wear amount can also be established, that is, when the number of folding times of the hinge mechanism reaches the preset number of times, at least one of the wear amount of the first damping structure 40 and the wear amount of the second damping structure 50 will be greater than or equal to the preset wear amount, so that the connecting portion 33 will spontaneously break, and then 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 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.

[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 hinge mechanism is opened and closed 50,000 times, the wear of the first damping structure 40 and the second damping structure 50 will reach a preset wear amount, then 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 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 axially fit and connect 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 axially fit and connect 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.

[0038] In some embodiments, the shaft mounting base 11 includes a first end surface and a second end surface disposed opposite to each other, the first end surface being the end surface of the shaft mounting base 11 facing away from the second damping structure 50, and the second end surface being the end surface of the shaft mounting base 11 facing 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 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 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 rotating shaft mounting seat 11 can be understood as the end face contact friction between the second swing arm 32 and the second end face, that is, during the relative rotation process of the second swing arm 32 and the rotating 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 face contact friction between the second swing arm 32 and the second end face, so as to make up 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, thereby achieving the purpose of extending the service life of the hinge mechanism.

[0041] In some embodiments, the connecting portion 33 includes a first connecting end connected to the first swing arm 31 and a second connecting end connected to the second swing arm 32. The first connecting end is connected to the end of the first swing arm 31 away from the rotating shaft, and the second connecting end is connected to the end of the second swing arm 32 away from the rotating shaft. The connecting portion 33 is disposed directly opposite the rotating shaft mounting seat 11. Thus, when the connecting portion 33 breaks, the first swing arm 31 can move in the first direction under the action of the first damping structure 40, thereby allowing the first swing arm 31 to be axially aligned with the rotating shaft mounting seat 11 in the rotating shaft 20. The second swing arm 32 can move in the second direction under the action of the second damping structure 50, thereby allowing the second swing arm 32 to be axially aligned with the rotating shaft mounting seat 11 in 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 above-mentioned connecting part 33 can be a weak connection structure for connecting the first swing arm 31 and the second swing arm 32. The weak connection structure 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 mounted on the rotating shaft 20. The first elastic member 41 is connected to the first swing arm 31 via the first cam structure 42. The first elastic member 41 and the first cam structure 42 are used to provide a rotational 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 mounted 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 , which is rotatably connected to the shaft mounting base 11 via the shaft 20 ;

[0048] The first damping structure 40 also includes a third cam structure 43. 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, the cam connection between the first cam structure 42 and the cam structure of the first swing arm 31, and the cam connection between the third cam structure 43 and the cam structure of the second swing arm assembly 70, can achieve synchronous rotation of the first swing arm assembly 30 and the second swing arm assembly 70. 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 mentioned above can 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 . 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] Among them, 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 axially fit and connect to the shaft 20, and the second damping structure 50 can drive the second swing arm 32 and the shaft mounting seat 11 to axially fit and connect 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 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 can both 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 can 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 electronic device such as a foldable mobile phone or a laptop computer.

[0070] Throughout this specification, reference to terms such as "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 illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[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 intent 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 base, the rotating shaft is disposed on the rotating shaft mounting base, 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 base 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 rotational 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, wherein: The first damping structure includes a first elastic member and a first cam structure. The first elastic member, the first cam structure, and the first swing arm are sequentially sleeved on the rotating shaft. The first elastic member is connected to the first swing arm via the first cam structure. The first elastic member and the first cam structure are used to provide a rotational 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, wherein: The hinge mechanism further includes a second swing arm assembly, which 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, wherein: 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, wherein: The wear amount of the second damping structure includes a 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 according to any one of claims 1 to 9.

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