Hinge mechanism and electronic device

Abstract

Disclosed in the present application are a hinge mechanism and an electronic device. The hinge mechanism comprises at least two hinge assemblies distributed in a direction where a rotating axis is located, wherein each hinge assembly comprises a base, a first synchronous swing arm, a second synchronous swing arm, a first slider, a fixed mating member and an elastic member, the first synchronous swing arm and the second synchronous swing arm are rotationally connected to the base, the first synchronous swing arm, the fixed mating member and the second synchronous swing arm are sequentially arranged in the direction where the rotating axis is located, the first synchronous swing arm is mated with the first slider, the first slider abuts against a first end of the elastic member, the fixed mating member is connected to the base, the fixed mating member is in planar fit with the first synchronous swing arm, the second synchronous swing arm is provided with a first driving curved surface, the fixed mating member is provided with a second driving curved surface, and the first driving curved surface is mated with the second driving curved surface The electronic device comprises a first device body, a second device body and the hinge mechanism.

Description

Hinge mechanism and electronic equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on September 1, 2023, with application number 202311127531.2 and invention name “Hinge mechanism and electronic device”. The entire contents of the Chinese patent application are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a hinge mechanism and electronic equipment. Background Art

[0004] With the development of science and technology, people are becoming more and more dependent on electronic devices. In order to improve the portability and comfort of electronic devices, the application range of foldable electronic devices is becoming more and more extensive.

[0005] In the prior art, foldable electronic devices rely on a hinge mechanism to achieve folding and unfolding. To ensure a pleasant feel during folding and unfolding, a damping component is required within the hinge mechanism. However, the damping component in the prior art occupies a large space and provides limited damping effect, failing to address both the need for thinner and lighter electronic devices and improved rotational damping.

[0006] Summary of the Invention

[0007] 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 foldable electronic devices cannot achieve both lightness and thinness and ensure rotational damping.

[0008] In a first aspect, an embodiment of the present application provides a hinge mechanism, comprising at least two hinge assemblies distributed along a rotation axis, each hinge assembly comprising a base, a first synchronous swing arm, a second synchronous swing arm, a first sliding member, a fixed mating member, and an elastic member, wherein:

[0009] The first synchronous swing arm and the second synchronous swing arm are respectively rotatably connected to the base, the first synchronous swing arm, the fixed matching member and the second synchronous swing arm are sequentially arranged along the direction of the rotation axis, the first synchronous swing arm is matched with the first sliding member, and the first sliding member abuts against the first end of the elastic member, the fixed matching member is connected to the base, and the fixed matching member and the first synchronous swing arm are matched through a plane, the second synchronous swing arm is provided with a first driving curved surface, the fixed matching member is provided with a second driving curved surface, and the first driving curved surface is matched with the second driving curved surface;

[0010] When the first synchronous swing arm rotates, it drives the first sliding member to slide in a first direction, and the first sliding member acts on the first end of the elastic member. When the second synchronous swing arm rotates, the fixed matching member drives the second synchronous swing arm to slide in a second direction through the first driving curved surface and the second driving curved surface, and the second synchronous swing arm acts on the second end of the elastic member to cause the elastic member to produce elastic deformation, and the first direction is opposite to the second direction.

[0011] In a second aspect, an embodiment of the present application further provides an electronic device, comprising a first device body, a second device body, and the above-mentioned hinge mechanism, wherein the first device body is connected to the second device body via the hinge mechanism;

[0012] During the relative rotation of the first device body and the second device body, the electronic device switches between an unfolded state and a folded state.

[0013] In the embodiment of the present application, each hinge assembly of the hinge mechanism is provided with a first synchronous swing arm and a second synchronous swing arm. Due to the cooperation between the first synchronous swing arm and the first sliding member, when the first synchronous swing arm rotates, the first sliding member acts on the first end of the elastic member, causing the elastic member to produce elastic deformation. Moreover, because the fixed fitting member is connected to the base, the position of the fixed fitting member relative to the base remains unchanged. Relying on the first driving surface and the second driving surface, when the second synchronous swing arm rotates, it slides under the reaction force of the fixed fitting member. Then, the second synchronous swing arm acts on the second end of the elastic member, further causing the elastic member to produce a larger elastic deformation. In this way, the first synchronous swing arm and the second synchronous swing arm correspond to the same elastic member. The slip generated by the rotation of the first synchronous swing arm and the slip generated by the sliding of the second synchronous swing arm can both be applied to the same elastic member, causing the elastic member to produce a larger elastic deformation, thereby ensuring that the hinge mechanism has a larger damping force.

[0014] Therefore, when the diameters of the first synchronous swing arm, the second synchronous swing arm and the elastic member are small, that is, when the electronic device is made thin and light, the first synchronous swing arm and the second synchronous swing arm do not need to correspond to different elastic members respectively. The two can apply force to the same elastic member, reducing the number of elastic members, thereby reducing the axial size of the hinge mechanism and avoiding affecting the line. Therefore, the solution of the present application can not only achieve the thinness of the electronic device, but also ensure the rotational damping of the foldable electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic structural diagram of a hinge mechanism disclosed in an embodiment of the present application;

[0016] FIG2 is a schematic diagram of the bottom structure of the hinge mechanism when the electronic device is in an unfolded state according to an embodiment of the present application;

[0017] FIG3 is a schematic diagram of the front structure of the hinge mechanism when the electronic device is in an unfolded state according to an embodiment of the present application;

[0018] FIG4 is a schematic diagram of the bottom structure of the hinge mechanism when the electronic device is in a folded state according to an embodiment of the present application;

[0019] FIG5 is a schematic diagram of the front structure of the hinge mechanism when the electronic device is in a folded state according to an embodiment of the present application;

[0020] FIG6 is an exploded view of the hinge mechanism disclosed in an embodiment of the present application;

[0021] FIG7 is a schematic structural diagram of a hinge assembly disclosed in an embodiment of the present application;

[0022] FIG8 is a schematic diagram of the bottom structure of the hinge assembly when the electronic device is in an unfolded state according to an embodiment of the present application;

[0023] FIG9 is a schematic diagram of the front structure of the hinge assembly when the electronic device is in an unfolded state according to an embodiment of the present application;

[0024] FIG10 is a schematic diagram of the bottom structure of the hinge assembly when the electronic device is in a folded state according to an embodiment of the present application;

[0025] FIG11 is a schematic diagram of the front structure of the hinge assembly when the electronic device is in a folded state according to an embodiment of the present application;

[0026] FIG12 is an exploded view of the hinge assembly disclosed in an embodiment of the present application.

[0027] Description of the accompanying drawings: 10-hinge assembly, 100-base, 110-spacer protrusion, 120-slot, 210-first synchronous swing arm, 211-first rotating part, e-fifth driving curved surface, 212-first meshing tooth, 213-second meshing tooth, 220-second synchronous swing arm, 221-second rotating part, a-first driving curved surface, c-third driving curved surface, 310-first sliding member, f-sixth driving curved surface, 320-second sliding member, d-fourth driving curved surface, 330-fixed fitting, b-second driving curved surface, 400-elastic member, 410-first elastic member, 420-second elastic member, 500-rotating shaft, 510-first rotating shaft, 520-second rotating shaft, 530-shaft cap, 540-groove, 610-fixed bracket, 620-elastic bracket, 630-circlip, 710 - first transmission gear, 720 - second transmission gear, 800 - frame, 810 - pin, 900 - virtual swing arm, 910 - connector, 20 - door panel, 30 - connecting bracket. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0029] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0030] The hinge mechanism and electronic device provided in the embodiments of the present application are described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0031] Please refer to Figures 1 to 12. The hinge mechanism disclosed in the embodiment of the present application includes at least two hinge assemblies 10 distributed along the direction of the rotation axis, and each hinge assembly 10 includes a base 100, a first synchronous swing arm 210, a second synchronous swing arm 220, a first sliding member 310, a fixed fitting member 330 and an elastic member 400, wherein the base 100 serves as an installation base for the first synchronous swing arm 210, the second synchronous swing arm 220, the first sliding member 310, the fixed fitting member 330 and the elastic member 400; the elastic member 400 can be but is not limited to a spring.

[0032] The first synchronous swing arm 210 and the second synchronous swing arm 220 are respectively rotatably connected to the base 100, and their rotation axes are collinear. Optionally, the base 100 can be provided with a rotating shaft 500, and the first synchronous swing arm 210 and the second synchronous swing arm 220 are respectively sleeved on the outside of the rotating shaft 500, and the first synchronous swing arm 210 and the second synchronous swing arm 220 are respectively rotatably engaged with the rotating shaft 500. Of course, the first synchronous swing arm 210 and the second synchronous swing arm 220 can also be rotatably connected to the base 100 in other ways.

[0033] The first synchronous swing arm 210, the fixed fitting 330, and the second synchronous swing arm 220 are sequentially arranged along the axis of rotation. Furthermore, the first synchronous swing arm 210 cooperates with the first sliding member 310, and the first sliding member 310 abuts against the first end of the elastic member 400. Optionally, the first synchronous swing arm 210 is provided with a first rotating portion 211, which cooperates with the first sliding member 310. Thus, when the first synchronous swing arm 210 rotates, it drives the first sliding member 310 to slide in the first direction. The first sliding member 310 acts on the first end of the elastic member 400, causing the elastic member 400 to elastically deform.

[0034] The fixed fitting 330 is connected to the base 100 and is fixed in position relative to the base 100. The fixed fitting 330 and the first synchronous swing arm 210 are engaged by a plane. That is, when the first synchronous swing arm 210 rotates, it is not driven by the fixed fitting 330, and the sliding amount of the first sliding member 310 is achieved solely by the rotation of the first synchronous swing arm 210. Optionally, the end surface of the fixed fitting 330 facing the first synchronous swing arm 210 is a first plane, and the end surface of the first synchronous swing arm 210 facing the fixed fitting 330 is a second plane, with the first plane and the second plane in contact and engagement.

[0035] The second synchronous swing arm 220 is provided with a first driving curved surface a, and the fixed fitting 330 is provided with a second driving curved surface b, wherein the first driving curved surface a mates with the second driving curved surface b. Optionally, the second synchronous swing arm 220 is provided with a second rotating portion 221, wherein the first driving curved surface a is provided on the second rotating portion 221, and the second rotating portion 221 mates with the fixed fitting 330 via the first driving curved surface a and the second driving curved surface b. The first driving curved surface a is provided at the end of the second rotating portion 221 facing the fixed fitting 330, and the second driving curved surface b is provided at the end of the fixed fitting 330 facing the second rotating portion 221. One of the first driving curved surface a and the second driving curved surface b includes a first concave surface, and the other includes a first convex surface, wherein the first concave surface mates with the first convex surface. Further optionally, each of the first driving curved surface a and the second driving curved surface b includes multiple first concave surfaces and multiple first convex surfaces, and the first concave surfaces and the first convex surfaces are alternately distributed along the circumference of the second synchronous swing arm 220.

[0036] As a result, when the second synchronous swing arm 220 rotates, the fixed engagement member 330, acting in concert with the first drive curved surface a and the second drive curved surface b, drives the second synchronous swing arm 220 to slide in the second direction. The second synchronous swing arm 220 acts on the second end of the elastic member 400, causing the elastic member 400 to further elastically deform. The first direction and the second direction are opposite. Therefore, the first sliding member 310 and the second synchronous swing arm 220 act on the elastic member 400 from different directions, facilitating a greater amount of elastic deformation of the elastic member 400.

[0037] In the embodiment of the present application, each hinge assembly 10 of the hinge mechanism is equipped with a first synchronous swing arm 210 and a second synchronous swing arm 220. When the first synchronous swing arm 210 rotates, it acts on the first end of the elastic member 400 through the first sliding member 310, causing the elastic member 400 to produce elastic deformation. Furthermore, due to the first driving curved surface a and the second driving curved surface b, when the second synchronous swing arm 220 rotates, it is subjected to the reaction force of the fixed mating member 330 and slides. In turn, the second synchronous swing arm 220 acts on the second end of the elastic member 400, further causing the elastic member 400 to produce a larger elastic deformation. In this way, the first synchronous swing arm 210 and the second synchronous swing arm 220 correspond to the same elastic member 400. The slip generated by the rotation of the first synchronous swing arm 210 and the slip generated by the sliding of the second synchronous swing arm 220 can both be applied to the same elastic member 400, causing the elastic member 400 to produce a larger elastic deformation, thereby ensuring that the hinge mechanism has a larger damping force.

[0038] Therefore, when the diameters of the first synchronous swing arm 210, the second synchronous swing arm 220 and the elastic member 400 are relatively small, that is, when the electronic device is made thinner and lighter, the first synchronous swing arm 210 and the second synchronous swing arm 220 do not need to correspond to different elastic members 400 respectively. The two can apply force to the same elastic member 400, thereby reducing the number of elastic members 400, thereby reducing the axial dimension of the hinge mechanism and avoiding affecting the line passing. Therefore, the solution of the present application can not only achieve the thinness and lighter electronic device, but also reduce the axial dimension, thereby realizing the miniaturization of electronic equipment.

[0039] In an optional embodiment, each hinge assembly 10 further includes a second sliding member 320. The second sliding member 320 and the fixed mating member 330 are respectively located on either side of the second synchronous swing arm 220 along the rotation axis, and the second sliding member 320 and the second synchronous swing arm 220 are mated by a plane. In this manner, when the second synchronous swing arm 220 slides in the second direction, it abuts against the second sliding member 320, which in turn acts on the second end of the elastic member 400. The sliding movement of the second sliding member 320 is solely caused by the sliding of the second synchronous swing arm 220.

[0040] In another embodiment, the second synchronous swing arm 220 is provided with a third driving curved surface c, and the second sliding member 320 is provided with a fourth driving curved surface d. The third driving curved surface c and the fourth driving curved surface d cooperate with each other. When the second synchronous swing arm 220 rotates, the third driving curved surface c and the fourth driving curved surface d drive the second sliding member 320 to slide in the second direction, and the second sliding member 320 acts on the second end of the elastic member 400. Optionally, the second rotating portion 221 is provided with a first driving curved surface a and a third driving curved surface c at both ends along the axis of the rotating shaft 500, respectively. One of the third driving curved surface c and the fourth driving curved surface d includes a second concave surface, and the other includes a second convex surface, with the second concave surface cooperating with the second convex surface. Further optionally, the third driving curved surface c and the fourth driving curved surface d each include multiple second concave surfaces and multiple second convex surfaces, with the second concave surfaces and the second convex surfaces alternatingly distributed around the circumference of the second synchronous swing arm 220.

[0041] In this embodiment, the rotation of the second synchronous swing arm 220 drives the second sliding member 320 to further slide in the second direction. This means that the sliding movement of the second sliding member 320 is generated by the rotation and sliding of the second synchronous swing arm 220. This helps further increase the sliding movement of the second sliding member 320, thereby increasing the force exerted by the second sliding member 320 on the elastic member 400, further increasing the deformation of the elastic member 400 and enhancing the damping effect of the hinge mechanism. Furthermore, while maintaining a certain damping effect of the hinge mechanism, this helps further reduce the number of elastic members 400 and the axial dimension of the hinge mechanism.

[0042] In an optional embodiment, the first synchronous swing arm 210 is provided with a fifth drive curved surface e, and the first sliding member 310 is provided with a sixth drive curved surface f. The fifth drive curved surface e and the sixth drive curved surface f cooperate with each other. When the first synchronous swing arm 210 rotates, the fifth drive curved surface e and the sixth drive curved surface f drive the first sliding member 310 to slide in the first direction. Optionally, the fifth drive curved surface e is provided on the first rotating portion 211, and one of the fifth drive curved surface e and the sixth drive curved surface f includes a third concave surface, and the other includes a third convex surface, with the third concave surface cooperating with the third convex surface. Further, optionally, both the fifth drive curved surface e and the sixth drive curved surface f include multiple third concave surfaces and multiple third convex surfaces, with the third concave surfaces and the third convex surfaces alternatingly distributed around the circumference of the first synchronous swing arm 210.

[0043] With this embodiment, the first synchronous swing arm 210 and the first sliding member 310 do not need to be provided with a complex matching structure, and only a simple curved surface structure is required to achieve the matching between the two, which is conducive to simplifying the structure of the first synchronous swing arm 210 and the first sliding member 310.

[0044] Of course, in other embodiments, the first synchronous swing arm 210 and the first sliding member 310 may not be provided with the fifth driving surface and the sixth driving surface. One of the first synchronous swing arm 210 and the first sliding member 310 may be provided with a spiral groove, and the other may be provided with a column. The column extends into the spiral groove and can slide along the extension direction of the spiral groove. In this way, when the first synchronous swing arm 210 rotates, it can also drive the first sliding member 310 to move.

[0045] In an alternative embodiment, the base 100 is provided with a spacing protrusion 110, and the second sliding member 320, the second synchronous swing arm 220, the fixed fitting 330, the spacing protrusion 110, the first synchronous swing arm 210, and the first sliding member 310 are arranged in this order. The fixed fitting 330 abuts against the spacing protrusion 110 and engages with the first synchronous swing arm 210 in a planar manner via the spacing protrusion 110. The first sliding member 310 and the second sliding member 320 are directly connected to the ends of the elastic member 400, respectively. In this way, when the first sliding member 310 and the second sliding member 320 slide, the elastic member 400 is stretched. Alternatively, the spacing protrusion 110 is located at the end of the base 100, and the spacing protrusion 110 and the base 100 can be an integral structure.

[0046] In another embodiment, as shown in FIG12 , the hinge assembly 10 further includes a rotating shaft 500, and the elastic member 400 includes a first elastic member 410. The second sliding member 320, the second synchronous swing arm 220, the fixed fitting 330, the spacing protrusion 110, the first synchronous swing arm 210, the first sliding member 310, and the first elastic member 410 are sequentially sleeved on the exterior of the rotating shaft 500. The second sliding member 320 acts on the second end of the elastic member 400 via the rotating shaft 500. The elastic member 400 is located on the side of the first sliding member 310 facing away from the first synchronous swing arm 210. Specifically, one end of the rotating shaft 500 is connected to the second sliding member 320, and the second end of the rotating shaft 500 is connected to the second end of the elastic member 400. Thus, when the second sliding member 320 slides in the second direction, it drives the rotating shaft 500 to move in the same direction. When the rotating shaft 500 moves, it drives the second end of the elastic member 400 to move, thereby causing the elastic member 400 to elastically deform.

[0047] With this embodiment, the hinge assembly 10 not only provides support for various components through the rotating shaft 500 , but also ensures that the second sliding member 320 applies a force to the elastic member 400 when sliding, which is beneficial to improving the stability of the hinge assembly 10 .

[0048] In an optional embodiment, the first synchronous swing arm 210 is provided with a first rotating portion 211, the first rotating portion 211 cooperates with the first sliding member 310, and the first rotating portion 211 directly abuts against the spacing protrusion 110. In another embodiment, the hinge assembly 10 further includes a fixed bracket 610, which is connected to the base 100, i.e., the position of the fixed bracket 610 relative to the base 100 is fixed, i.e., the position of the fixed bracket 610 relative to the base 100 in the direction of the rotation axis is fixed. The fixed bracket 610 is sleeved on the outside of the rotating shaft 500, and the fixed bracket 610 is slidably engaged with the rotating shaft 500, and the fixed bracket 610 is located between the spacing protrusion 110 and the first rotating portion 211. In this way, while the hinge mechanism is designed to be relatively light and thin, the wall thickness of the spacing protrusion 110 and the base 100 are both relatively small. The fixed fitting 330 and the first rotating part 211 act on the spacing protrusion 110 at the same time. The spacing protrusion 110 has a large bearing capacity, so a fixed bracket 610 is provided to bear the force of the first rotating part 211. The fixed fitting 330 and the first rotating part 211 act on different components respectively, avoiding excessive force on the base 100 and the spacing protrusion 110, which is beneficial to improving the safety performance of the hinge mechanism.

[0049] In an optional embodiment, only one first synchronous swing arm 210 may be provided, that is, the hinge assembly 10 can only achieve single-sided folding or unfolding.

[0050] In another embodiment, the number of the first synchronous swing arms 210 is at least two, wherein the two first synchronous swing arms 210 are respectively located on both sides of the base 100, and a plurality of first meshing teeth 212 and a plurality of second meshing teeth 213 are respectively arranged along the circumference of the rotation axis, the rotation axes of the first synchronous swing arm 210 and the second synchronous swing arm 220 are parallel, the first meshing teeth 212 and the second meshing teeth 213 are matched in transmission, and the first meshing teeth 212 and the second meshing teeth 213 are located between the fixed bracket 610 and the spacing protrusion 110, the first meshing teeth 212 serve as part of the first synchronous swing arm 210, and the second meshing teeth 213 serve as part of the second synchronous swing arm 220, and the fixed matching part 330 is planarly matched with the first meshing teeth 212 or the second meshing teeth 213 through the spacing protrusion 110.

[0051] With this embodiment, the space between the spacing protrusion 110 and the fixed bracket 610 is directly used to accommodate the first meshing tooth 212 and the second meshing tooth 213. When one of the first synchronous swing arm 210 and the second synchronous swing arm 220 rotates, the structure of the first meshing tooth 212 and the second meshing tooth 213 drives the other to rotate around the corresponding rotation axis, thereby realizing synchronous folding and synchronous unfolding of the two, which is beneficial to improving the folding efficiency and unfolding efficiency.

[0052] In an optional embodiment, as shown in FIG8 , the hinge assembly 10 further includes a first transmission gear 710 and a second transmission gear 720. The first transmission gear 710 and the second transmission gear 720 are located between the first meshing teeth 212 and the second meshing teeth 213. The first meshing teeth 212, the first transmission gear 710, the second transmission gear 720, and the second meshing teeth 213 are sequentially meshed. In this embodiment, the first transmission gear 710 and the second transmission gear 720 are disposed between the first meshing teeth 212 and the second meshing teeth 213. Thus, there is a spacing between the first meshing teeth 212 and the second meshing teeth 213, and the distance between the rotation axis of the first synchronous swing arm 210 and the rotation axis of the second synchronous swing arm 220 is constant. Therefore, the diameter of the first meshing teeth 212 and the diameter of the second meshing teeth 213 can be set to be smaller, which is conducive to reducing the thickness of the hinge assembly 10 and achieving a thinner hinge mechanism.

[0053] Of course, in other embodiments, the hinge assembly 10 may not be provided with the first transmission gear 710 and the second transmission gear 720 , and the first meshing teeth 212 and the second meshing teeth 213 may be directly meshed.

[0054] In an optional embodiment, as shown in FIG12 , the hinge assembly 10 further includes a snap ring 630. A groove 540 is provided at the second end of the rotating shaft 500. The snap ring 630 is sleeved on the exterior of the rotating shaft 500, with a portion of the snap ring 630 extending into the groove 540 to secure the snap ring 630 relative to the rotating shaft 500. At this time, due to the limiting effect of the groove sidewalls of the groove 540, the snap ring 630 and the rotating shaft 500 are engaged at the axial upper limit position of the rotating shaft 500. Optionally, the groove 540 provided on the rotating shaft 500 is an annular groove, and the snap ring 630 can extend into the annular groove by snapping, that is, the snap ring 630 and the rotating shaft 500 are snap-engaged. Furthermore, the second sliding member 320 cooperates with the snap ring 630 at the upper axial limit position of the rotating shaft 500. Optionally, the second sliding member 320 and the snap ring 630 contact each other at the upper axial limit position of the rotating shaft 500. When the second sliding member 320 slides, it acts on the second end of the elastic member 400 through the snap ring 630 and the rotating shaft 500. Specifically, when the second sliding member 320 slides in the second direction, it abuts against the snap ring 630. Since the snap ring 630 and the rotating shaft 500 are relatively fixed, the snap ring 630 can drive the rotating shaft 500 to move in the second direction, thereby acting on the second end of the elastic member 400.

[0055] Through the matching structure of the snap ring 630 and the rotating shaft 500, the snap ring 630 can be installed on the rotating shaft 500 and removed from the rotating shaft 500. Therefore, the user can install the rotating shaft 500 as needed and then assemble the various components of the hinge assembly 10, or disassemble the rotating shaft 500 and other components as needed.

[0056] Of course, in other embodiments, the hinge assembly 10 may not be provided with the snap ring 630, and a limiting protrusion may be directly provided on the second end of the rotating shaft 500, and the second sliding member 320 directly cooperates with the limiting protrusion at the axial upper limit position of the rotating shaft 500. Optionally, the limiting protrusion and the rotating shaft 500 may be an integrated structure.

[0057] In an optional embodiment, the number of rotating shafts 500 is at least two, including a first rotating shaft 510 and a second rotating shaft 520. The elastic member 400 is a first elastic member 410, and the number of the first elastic members 410 is at least two. The number of the first synchronous swing arm 210, the second synchronous swing arm 220, and the first elastic member 410 are all at least two, wherein two first synchronous swing arms 210, two second synchronous swing arms 220, and two first elastic members 410 are respectively mounted on the first rotating shaft 510 and the second rotating shaft 520. In this way, during the synchronous rotation of the first synchronous swing arm 210 and the second synchronous swing arm 220, the first sliding member 310 and the second sliding member 320 simultaneously act on the at least two first elastic members 410, that is, the at least two first elastic members 410 simultaneously generate elastic deformation, which is conducive to improving the damping force and the damping feel.

[0058] Optionally, the retaining ring 630 includes a first ring body and a second ring body that are connected, and the first ring body and the second ring body are both provided with openings. The first ring body extends into the groove 540 of the first rotating shaft 510 through the corresponding opening, and the second ring body extends into the groove 540 of the second rotating shaft 520 through the corresponding opening, that is, the first ring body is snap-fitted with the first rotating shaft 510, and the second ring body is snap-fitted with the second rotating shaft 520, thereby being simultaneously connected to the first rotating shaft 510 and the second rotating shaft 520 through a retaining ring 630.

[0059] In another embodiment, as shown in Figures 7-12, there are at least two elastic members 400, including a first elastic member 410 and a second elastic member 420. The two first elastic members 410 are respectively sleeved on the first rotating shaft 510 and the second rotating shaft 520, and the second elastic member 420 is located between the first rotating shaft 510 and the second rotating shaft 520. In this way, when the first sliding member 310 and the second sliding member 320 slide, they also act on the two ends of the second elastic member 420. In this embodiment, the second elastic member 420 is added between the first rotating shaft 510 and the second rotating shaft 520, fully utilizing the space between the two first elastic members 410, which is conducive to further increasing the total deformation of the elastic member 400, further improving the damping force, and improving the damping feel.

[0060] In a further embodiment, the hinge assembly 10 further includes an elastic bracket 620. The ends of the first rotating shaft 510 and the ends of the second rotating shaft 520 are each provided with a shaft cap 530. The elastic bracket 620 is sleeved onto the exterior of the first rotating shaft 510 and the second rotating shaft 520. The elastic bracket 620 cooperates with the shaft cap 530 of the first rotating shaft 510 and the shaft cap 530 of the second rotating shaft 520 in the direction of the rotation axis. Furthermore, the elastic member 400 cooperates with the elastic bracket 620 in the direction of the rotation axis. Specifically, the elastic bracket 620 is provided with a first opening for the first rotating shaft 510 to pass through, and a second opening for the second rotating shaft 520 to pass through. Thus, when the first rotating shaft 510 and the second rotating shaft 520 move in the second direction, the shaft cap 530 moves with the corresponding rotating shaft 500, and the shaft cap 530 acts on each elastic member 400 through the elastic bracket 620.

[0061] Optionally, the first sliding member 310 is provided with a first mounting column, the elastic bracket 620 is provided with a second mounting column, the first end of the second elastic member 420 is sleeved on the first mounting column, and the second end of the second elastic member 420 is sleeved on the second mounting column to achieve the installation of the second elastic member 420.

[0062] In an optional embodiment, the hinge assembly 10 further includes a frame 800, the first synchronous swing arm 210 is fixedly connected to the frame 800, and the second synchronous swing arm 220 is slidably connected to the frame 800 along the direction of the rotation axis. That is, the second synchronous swing arm 220 and the frame 800 are slidably engaged along the direction of the rotation axis, ensuring that when the second synchronous swing arm 220 rotates, it is acted upon by the fixed engagement member 330 to slide along the direction of the rotation axis. Optionally, a frame 800 is provided on both sides of the base 100.

[0063] In another embodiment, the first synchronous swing arm 210 and the second synchronous swing arm 220 are respectively slidably engaged with the frame 800 along the radial direction of the first synchronous swing arm 210, and the radial direction of the first synchronous swing arm 210 is perpendicular to the rotation axis. Optionally, the frame 800 is provided with a first chute and a second chute at intervals along the direction of the rotation axis, and the first synchronous swing arm 210 and the second synchronous swing arm 220 are respectively provided with a first slider and a second slider, the first slider extending into the first chute and slidably engaged with the first chute along the radial direction of the rotation axis, and the second slider extending into the second chute and slidably engaged with the second chute respectively along the radial direction of the rotation axis and in the direction of the rotation axis.

[0064] Due to actual design errors and other reasons, the first synchronous swing arm 210 and the second synchronous swing arm 220 are prone to slight displacement along the radial direction of the first synchronous swing arm 210 during the rotation process. Therefore, this embodiment is adopted to enable the first synchronous swing arm 210 and the second synchronous swing arm 220 to slide a certain displacement in the radial direction relative to the frame 800, ensuring that the frame 800 can rotate smoothly. Moreover, the two synchronous swing arms are respectively slidably matched with the frame 800, which is beneficial to improving the stability of the hinge mechanism during folding or unfolding.

[0065] In an optional embodiment, the hinge assembly 10 further includes a virtual swing arm 900, the base 100 is provided with a slot 120, the slot 120 is provided with a notch, the virtual swing arm 900 extends into the slot 120 from the notch, and the virtual swing arm 900 rotates with the base 100, and the notch is in an open state. In another embodiment, in combination with Figures 7-8 and Figure 12, the hinge assembly 10 further includes a connector 910, the connector 910 is connected to the base 100, and the connector 910 is located at the notch to close the notch. Optionally, the connector 910 can be a cover plate, and the cover plate can be arranged at the notch by welding. With this embodiment, the notch is closed by using the connector 910 to avoid fractures in the base 100, which is beneficial to improving the rigidity and support performance of the hinge mechanism.

[0066] Optionally, the virtual swing arm 900 and the frame 800 can be rotatably connected via a pin 810 , and when the frame 800 rotates, the virtual swing arm 900 , the first synchronous swing arm 210 and the second synchronous swing arm 220 are driven to rotate.

[0067] In an optional embodiment, referring to Figures 1 to 6, the hinge mechanism further includes a door panel 20 and a connecting bracket 30, and two adjacent hinge assemblies 10 are connected through the door panel 20. Specifically, the first end of the door panel 20 is connected to the fixed bracket 610 of one of the hinge assemblies 10, and the second end of the door panel 20 is connected to the base 100 of the other hinge assembly 10; the connecting bracket 30 is connected to the frame 800 of each hinge assembly 10 located on the same side of the base 100, and a connecting bracket 30 can be provided on both sides of the hinge assembly 10.

[0068] Based on the hinge mechanism disclosed in the present application, an embodiment of the present application also provides an electronic device, which includes a first device body, a second device body and the hinge mechanism in the above embodiment, and the first device body is connected to the second device body through the hinge mechanism. During the relative rotation of the first device body and the second device body, the electronic device switches between the unfolded state and the folded state. Optionally, the first device body and the second device body are respectively connected to the connecting bracket 30 located on both sides of the hinge assembly 10. The structure provided by this solution can realize the synchronous rotation of the first device body and the second device body of the electronic device, and can save the internal space of the electronic device.

[0069] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A hinge mechanism, comprising at least two hinge assemblies distributed along the direction of the rotation axis, each of the hinge assemblies comprising a base, a first synchronous swing arm, a second synchronous swing arm, a first sliding member, a fixed matching member and an elastic member, wherein: The first synchronous swing arm and the second synchronous swing arm are rotatably connected to the base respectively, the first synchronous swing arm, the fixed matching piece and the second synchronous swing arm are sequentially arranged along the direction where the rotation axis is located, the first synchronous swing arm is matched with the first sliding piece, and the first sliding piece abuts against the first end of the elastic piece, the fixed matching piece is connected to the base, and the fixed matching piece is matched with the first synchronous swing arm through a plane, the second synchronous swing arm is provided with a first driving curved surface, the fixed matching piece is provided with a second driving curved surface, and the first driving curved surface is matched with the second driving curved surface; When the first synchronous swing arm rotates, it drives the first sliding member to slide in a first direction, and the first sliding member acts on the first end of the elastic member. When the second synchronous swing arm rotates, the fixed matching member drives the second synchronous swing arm to slide in a second direction through the first driving curved surface and the second driving curved surface, and the second synchronous swing arm acts on the second end of the elastic member to cause the elastic member to produce elastic deformation, and the first direction is opposite to the second direction.

2. The hinge mechanism according to claim 1, wherein: Each of the hinge assemblies further comprises a second sliding member, wherein the second sliding member and the fixed matching member are respectively located on both sides of the second synchronous swing arm along the rotation axis, and the second synchronous swing arm is provided with a third driving curved surface, and the second sliding member is provided with a fourth driving curved surface, and the third driving curved surface matches the fourth driving curved surface; When the second synchronous swing arm rotates, the second sliding member is driven to slide along the second direction through the third driving curved surface and the fourth driving curved surface, and the second sliding member acts on the second end of the elastic member.

3. The hinge mechanism according to claim 2, wherein: The hinge assembly also includes a rotating shaft, the base is provided with a spacing protrusion, the elastic member includes a first elastic member, the second sliding member, the second synchronous swing arm, the fixed fitting member, the spacing protrusion, the first synchronous swing arm, the first sliding member and the first elastic member are sequentially sleeved on the outside of the rotating shaft, and the fixed fitting member abuts against the spacing protrusion, the fixed fitting member cooperates with the first synchronous swing arm plane through the spacing protrusion, and the second sliding member acts on the second end of the elastic member through the rotating shaft.

4. The hinge mechanism according to claim 3, wherein: The hinge assembly also includes a fixed bracket, which is connected to the base and is sleeved on the outside of the rotating shaft. The first synchronous swing arm is provided with a first rotating part, and the first rotating part cooperates with the first sliding member. The fixed bracket is located between the spacing protrusion and the first rotating part, and the first rotating part abuts against the fixed bracket.

5. The hinge mechanism according to claim 4, wherein: The number of the first synchronous swing arms is at least two, wherein the two first synchronous swing arms are respectively located on both sides of the base, and a plurality of first meshing teeth and a plurality of second meshing teeth are respectively arranged along the circumference of the rotation axis, the first meshing teeth and the second meshing teeth are matched in transmission, and the first meshing teeth and the second meshing teeth are located between the fixed bracket and the spacing protrusion, and the fixed matching part cooperates with the first meshing tooth or the second meshing tooth plane through the spacing protrusion.

6. The hinge mechanism according to claim 5, wherein: The hinge assembly further includes a first transmission gear and a second transmission gear, wherein the first transmission gear and the second transmission gear are located between the first meshing teeth and the second meshing teeth, and the first meshing teeth, the first transmission gear, the second transmission gear and the second meshing teeth are meshed in sequence.

7. The hinge mechanism according to claim 3, wherein: The hinge assembly also includes a snap ring, a groove is provided at the second end of the rotating shaft, the snap ring is sleeved on the outside of the rotating shaft, and a part of the snap ring extends into the groove to fix the snap ring relative to the rotating shaft, and the second sliding member cooperates with the snap ring in the axial upper limit position of the rotating shaft, and when the second sliding member slides, it acts on the second end of the elastic member through the snap ring and the rotating shaft.

8. The hinge mechanism according to claim 3, wherein: The number of the rotating shafts is at least two, including a first rotating shaft and a second rotating shaft, the number of the elastic members is at least two, including the first elastic member and the second elastic member, the number of the first synchronous swing arm, the second synchronous swing arm and the first elastic member are all at least two, two of the first synchronous swing arms, two of the second synchronous swing arms and two of the first elastic members are respectively mounted on the first rotating shaft and the second rotating shaft, and the second elastic member is located between the first rotating shaft and the second rotating shaft.

9. The hinge mechanism according to claim 1, wherein: The hinge assembly also includes a frame, the first synchronous swing arm and the second synchronous swing arm are respectively slidably matched with the frame along the radial direction of the first synchronous swing arm, and the second synchronous swing arm is slidably matched with the frame along the direction where the rotation axis is located.

10. The hinge mechanism according to claim 1, wherein: The hinge assembly also includes a virtual swing arm and a connecting piece. The base is provided with a slot, and the slot is provided with a notch. The virtual swing arm extends into the slot through the notch, and the virtual swing arm is rotatably matched with the base. The connecting piece is connected to the base, and the connecting piece is located at the notch to close the notch.

11. The hinge mechanism according to claim 1, wherein: The first synchronous swing arm is provided with a fifth driving curved surface, and the first sliding member is provided with a sixth driving curved surface. The fifth driving curved surface and the sixth driving curved surface cooperate with each other. When the first synchronous swing arm rotates, the first sliding member is driven to slide along the first direction through the fifth driving curved surface and the sixth driving curved surface.

12. An electronic device, comprising a first device body, a second device body and the hinge mechanism according to any one of claims 1 to 11, wherein the first device body is connected to the second device body through the hinge mechanism; During the relative rotation of the first device body and the second device body, the electronic device switches between an unfolded state and a folded state.

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