Hinge mechanism and electronic device

Abstract

The present application relates to the technical field of hinges. Disclosed are a hinge mechanism and an electronic device. The disclosed hinge mechanism comprises a base, a first swing arm, a second swing arm and a synchronizing link, wherein the first swing arm and the second swing arm are both rotationally connected to the base; and the synchronizing link comprises a first end and a second end which are opposite each other, the first end and the second end respectively being rotationally connected to the first swing arm and the second swing arm that are located on the same side of the base, thus allowing the first swing arm and the second swing arm to rotate synchronously relative to the base.

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 November 30, 2023, with application number 202311646180.6 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 relates to the field of hinge technology, and in particular to a hinge mechanism and electronic equipment. Background Art

[0004] With the rapid development of electronic devices, in pursuit of large-screen display experience and convenience of carrying, foldable devices such as foldable mobile phones, tablets and computers are increasingly becoming the first choice for most users.

[0005] The core component for folding electronic devices is the hinge mechanism. The hinge area of ​​the hinge mechanism needs to be mainly formed by a combination of a base and different types of swing arms, and connected to the frame of the electronic device through a frame connector to form a water drop angle during the folding process of the screen, thereby reducing the bending stress of the folding screen.

[0006] During the rotation of the swing arm relative to the base, due to the inconsistency of the rotation centers between different types of swing arms, the swing arms rotate asynchronously, which in turn causes the swing arm to get stuck when rotating or sliding with the base or frame connector. Summary of the Invention

[0007] The present application discloses a hinge mechanism and an electronic device to solve the problem in the related art that different types of swing arms rotate asynchronously, causing the swing arms to easily get stuck when rotating or sliding with a base or frame connector.

[0008] In a first aspect, an embodiment of the present application discloses a hinge mechanism, the disclosed hinge mechanism comprising a base, a first swing arm, a second swing arm, and a synchronous connecting rod, wherein the first swing arm and the second swing arm are both rotatably connected to the base;

[0009] The synchronization connecting rod includes a first end and a second end facing each other, and the first end and the second end are respectively rotatably connected to the first swing arm and the second swing arm located on the same side of the base, so that the first swing arm and the second swing arm rotate synchronously relative to the base, wherein the extension direction of the synchronization connecting rod intersects or is not in the same plane with the rotation axis of the first swing arm or the rotation axis of the second swing arm.

[0010] In a second aspect, an embodiment of the present application discloses 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;

[0011] 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.

[0012] The technical solution adopted in this application can achieve the following technical effects:

[0013] The hinge mechanism disclosed in the embodiment of the present application improves the relevant technology. The hinge mechanism includes a base, a first swing arm, a second swing arm and a synchronous connecting rod, and the first swing arm and the second swing arm are both rotatably connected to the base; the synchronous connecting rod includes a first end and a second end opposite to each other, and the first end and the second end are respectively rotatably connected to the first swing arm and the second swing arm located on the same side of the base, so that the first swing arm and the second swing arm rotate synchronously relative to the base, thereby avoiding the problem of the first swing arm and the second swing arm being easily stuck when rotating or sliding with the base or the frame connecting part, thereby improving the stability of the hinge mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a structural schematic diagram of a hinge mechanism in an expanded state disclosed in an embodiment of the present application;

[0015] FIG2 is a schematic diagram showing a structure of a hinge mechanism in a folded state according to an embodiment of the present application;

[0016] FIG3 is a second structural schematic diagram of the hinge mechanism disclosed in an embodiment of the present application in an unfolded state;

[0017] FIG4 is a second structural schematic diagram of the hinge mechanism disclosed in an embodiment of the present application in a folded state;

[0018] FIG5 is a cross-sectional view of a hinge mechanism according to an embodiment of the present application;

[0019] FIG6 is a second cross-sectional view of the hinge mechanism disclosed in an embodiment of the present application;

[0020] FIG7 is a third structural diagram of the hinge mechanism in a folded state disclosed in an embodiment of the present application;

[0021] FIG8 is a third structural diagram of the hinge mechanism disclosed in an embodiment of the present application in an unfolded state;

[0022] FIG9 is a schematic diagram of the structure of an electronic device disclosed in an embodiment of the present application.

[0023] Explanation of the accompanying drawings: 1-electronic device; 10-hinge mechanism; 20-first device body; 30-second device body; 100-base, 120-rotating shaft, 130-elastic member, 140-first moving member, 150-second moving member, 160-matching part; 200-first swing arm, 201-first sub-swing arm, 202-second sub-swing arm, 203-first cam part, 204-second cam part, 205-third cam part, 210-first mounting part, 220-first pin shaft, 230-first avoidance groove; 300-second swing arm, 310-bearing, 320-second mounting part, 330-second pin shaft, 340-second avoidance groove; 400-synchronizing connecting rod; 500-frame connecting part; 600-synchronizing mechanism. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] 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.

[0026] The technical solutions disclosed in various embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0027] Please refer to Figures 1 to 8. The embodiment of the present application discloses a hinge mechanism 10. The disclosed hinge mechanism 10 may include a base 100, a first swing arm 200, a second swing arm 300 and a synchronization link 400.

[0028] The base 100 serves as the mounting base for the first and second swing arms 200, 300. Both the first and second swing arms 200, 300 are rotatably connected to the base 100. The first and second swing arms 200, 300 are rotatably connected to opposite sides of the base 100. The specific rotatable connection can be achieved through the coordination of the rotating shaft 120, the bearing 310, and the slide groove. The first swing arm 200 can be a synchronous swing arm used to control the synchronous rotation of the structural components on both sides of the base 100, while the second swing arm 300 can be a virtual swing arm used to support the rotation of the structural components on both sides of the base 100.

[0029] It should be noted that the structural parts on both sides of the base 100 may include a frame connector 500 and a shell of the electronic device, wherein the shell includes two shell parts located on both sides of the base 100, and the second swing arm 300 is connected to the shell on the same side through the frame connector 500 located on the same side, and drives the shell on the same side of the base 100 to switch between a folded state and an unfolded state. The first swing arm 200 is slidably connected to the shell, and is used to control the synchronous rotation of the shells on both sides of the base 100.

[0030] Since the rotation axes of the first swing arm 200 and the second swing arm 300 are inconsistent, there will be a problem of asynchronous rotation when the first swing arm 200 and the second swing arm 300 rotate relative to the base 100, which may cause the first swing arm 200 and the second swing arm 300 to easily get stuck when rotating or sliding with the base 100 or the frame connector 500.

[0031] To address the above issues, in an embodiment of the present application, as shown in Figures 1 to 4, a synchronization link 400 can be provided between the first swing arm 200 and the second swing arm 300. Specifically, the synchronization link 400 includes a first end and a second end facing each other. The first end and the second end of the synchronization link 400 are respectively rotatably connected to the first swing arm 200 and the second swing arm 300 located on the same side of the base 100, so that the first swing arm 200 and the second swing arm 300 rotate synchronously relative to the base 100. It is understood that when the first swing arm 200 and the second swing arm 300 located on the same side of the base 100 rotate or slide with the housing on the same side, the synchronization link 400 will apply a force to the first swing arm 200 and the second swing arm 300 through the first end and the second end, respectively, so that the movement of the first swing arm 200 and the second swing arm 300 is relatively synchronized, thereby reducing the problem of the first swing arm 200 and the second swing arm 300 being easily stuck when rotating or sliding with the base 100 or the frame connector 500.

[0032] The rotation axis of the first swing arm 200 and the rotation axis of the second swing arm 300 are both located on the base 100. The first swing arm 200 and the second swing arm 300 rotate around their respective rotation axes relative to the base 100. The extension direction of the synchronization link 400, that is, the length direction of the synchronization link 400, intersects with or is not in the same plane as the rotation axis of the first swing arm 200 or the rotation axis of the second swing arm 300. The synchronization link 400 can pull the first swing arm 200 and the second swing arm 300 respectively at its two ends along its own extension direction, so that the movements of the first swing arm 200 and the second swing arm 300 are relatively synchronized.

[0033] From the above, it can be seen that the hinge mechanism 10 disclosed in the embodiment of the present application improves the relevant technology. By setting a synchronization link 400 between the first swing arm 200 and the second swing arm 300, the first swing arm 200 and the second swing arm 300 can be rotated synchronously relative to the base 100 under the action of the synchronization link 400, thereby avoiding the problem of the first swing arm 200 and the second swing arm 300 being easily stuck due to poor synchronization when rotating or sliding with the base 100 or the frame connector 500, thereby improving the stability of the hinge mechanism 10.

[0034] In an optional embodiment of the present application, as shown in Figures 1 to 4, a raised first mounting portion 210 is provided on the side of the first swing arm 200 facing the second swing arm 300. The first mounting portion 210 and the first swing arm 200 may be an integral structure or may be manufactured separately and then assembled by welding, clamping, or the like. A raised second mounting portion 320 is provided on the side of the second swing arm 300 facing the first swing arm 200. Similarly, the second mounting portion 320 and the second swing arm 300 may be an integral structure or may be manufactured separately and then assembled by welding, clamping, or the like.

[0035] The first end of the synchronization link 400 is rotationally connected to the first mounting portion 210, and the second end of the synchronization link 400 is rotationally connected to the second mounting portion 320. The specific rotational connection method can be achieved using structures such as a rotating shaft 120 and an elastic connector. For example, a rotating shaft 120 can be provided at the first end of the synchronization link 400, and an axial hole can be provided at the first mounting portion 210. The rotational connection between the first end of the synchronization link 400 and the first mounting portion 210 is achieved by the cooperation between the rotating shaft 120 and the axial hole. Alternatively, an elastic connector can be used to connect the first mounting portion 210 and the first end of the synchronization link 400 respectively. The elastic connector can be a rubber member, a torsion spring, etc., and the deformation of the elastic connector itself can be used to achieve the rotational connection between the first end of the synchronization link 400 and the first mounting portion 210. The second mounting portion 320 and the second end of the synchronization link 400 can be rotationally connected in the same manner as described above.

[0036] By providing the first mounting portion 210 and the second mounting portion 320, there is no need to provide a connecting structure based on the existing structure of the first swing arm 200 and the second swing arm 300, which can avoid affecting the structural strength of the first swing arm 200 and the second swing arm 300. At the same time, the first mounting portion 210 and the second mounting portion 320 can also play a certain structural reinforcement role, thereby improving the stability of the hinge mechanism 10. In addition, the first mounting portion 210 and the second mounting portion 320 are smaller than the first swing arm 200 and the second swing arm 300, which can reduce the weight and size of the hinge mechanism 10.

[0037] Furthermore, as shown in Figures 1 to 4, along the extension direction of the synchronization link 400, the projection of the first mounting portion 210 and the projection of the second mounting portion 320 can at least partially overlap, which can reduce the extension span of the synchronization link 400 to a certain extent, improve the stability between the synchronization link 400, the first mounting portion 210 and the second mounting portion 320, and also reduce the probability of the synchronization link 400 getting stuck when rotating with the first mounting portion 210 and the second mounting portion 320.

[0038] Along the extension direction of the synchronization link 400, the projection of the first mounting portion 210 and the projection of the second mounting portion 320 may partially overlap or completely overlap. For example, when the projection of the first mounting portion 210 and the projection of the second mounting portion 320 completely overlap, the extension span of the synchronization link 400 is minimized, and the synchronization link 400 is less likely to deform when subjected to force, thereby ensuring synchronization between the first swing arm 200 and the second swing arm 300 and further improving the stability of the hinge mechanism 10.

[0039] In an optional embodiment of the present application, as shown in Figures 1 to 7, one of the first mounting portion 210 and the first end of the synchronization link 400 is provided with a first pin 220, and the other is provided with a first axial hole. The first pin 220 is inserted into the first axial hole and rotatably engages with the first axial hole. The first pin 220 can be provided on the first mounting portion 210 and the first axial hole can be provided on the first end of the synchronization link 400; alternatively, the first axial hole can be provided on the first mounting portion 210 and the first pin 220 can be provided on the first end of the synchronization link 400.

[0040] A second pin 330 is provided on one of the second mounting portion 320 and the second end of the synchronization link 400, and a second axial hole is provided on the other. The second pin 330 is inserted into the second axial hole and rotatably engages with the second axial hole. Alternatively, the second pin 330 can be provided on the second mounting portion 320 and the second axial hole on the second end of the synchronization link 400. Alternatively, the second axial hole can be provided on the second mounting portion 320 and the second pin 330 can be provided on the second end of the synchronization link 400.

[0041] When the synchronization link 400 applies force to the first swing arm 200 and the second swing arm 300, the synchronization link 400 can use the rotational cooperation of the shaft hole and the pin shaft to adjust the angle between the synchronization link 400 and the first swing arm 200 and the second swing arm 300, thereby avoiding the problem of the synchronization link 400 getting stuck.

[0042] Furthermore, as shown in Figures 1 to 4, the first mounting portion 210 may be provided with a first escape groove 230, and the second mounting portion 320 may be provided with a second escape groove 340, with the notch of the first escape groove 230 and the notch of the second escape groove 340 being arranged opposite each other. The first escape groove 230 is used to accommodate the first end of the synchronization link 400, with at least a portion of the first end disposed within the first escape groove 230, thereby further compacting the connection between the synchronization link 400 and the first swing arm 200. The second escape groove 340 is used to accommodate the second end of the synchronization link 400, with at least a portion of the second end disposed within the second escape groove 340, thereby further compacting the connection between the synchronization link 400 and the second swing arm 300.

[0043] By providing the first avoidance groove 230 and the second avoidance groove 340, the size of the hinge mechanism 10 can be reduced to a certain extent; at the same time, the avoidance groove can also play a certain limiting role on the end of the synchronization link 400, thereby avoiding position deviation of the synchronization link 400 and affecting the synchronization effect of the first swing arm 200 and the second swing arm 300.

[0044] When the first mounting portion 210 is provided with a first pin shaft 220, the two ends of the first pin shaft 220 are respectively connected to the groove wall of the first avoidance groove 230. Specifically, two mounting holes can be provided on the groove wall of the first avoidance groove 230, and the two ends of the first pin shaft 220 are respectively extended into the mounting holes to realize installation. The first end of the synchronization link 400 is provided with a first axial hole, the first end extends into the first avoidance groove 230, and the first pin shaft 220 is passed through the first axial hole, thereby realizing the rotational connection between the first end of the synchronization link 400 and the first mounting portion 210.

[0045] When the second mounting portion 320 is provided with a second pin shaft 330, the two ends of the second pin shaft 330 are respectively connected to the groove wall of the second avoidance groove 340. Specifically, two mounting holes can be provided in the groove wall of the second avoidance groove 340, and the two ends of the second pin shaft 330 are respectively extended into the mounting holes to realize installation. The second end of the synchronization link 400 is provided with a second axial hole, the second end extends into the second avoidance groove 340, and the second pin shaft 330 is passed through the second axial hole, thereby realizing the rotational connection between the second end of the synchronization link 400 and the second mounting portion 320.

[0046] Furthermore, if the first mounting portion 210 is provided with a first axial hole and the first end of the synchronization link 400 is provided with a first pin 220, a first avoidance groove 230 can be formed at the first end of the synchronization link 400, and at least a portion of the first mounting portion 210 can be inserted into the first avoidance groove 230. Similarly, if the second mounting portion 320 is provided with a second axial hole and the second end of the synchronization link 400 is provided with a second pin 330, a second avoidance groove 340 can be formed at the second end of the synchronization link 400, and at least a portion of the second mounting portion 320 can be inserted into the second avoidance groove 340.

[0047] It should be noted that the connection method between the first mounting portion 210 and the first end of the synchronization link 400 can be the same as or different from the connection method between the second mounting portion 320 and the second end of the synchronization link 400. For example, a first axial hole can be provided on the first mounting portion 210, and a first pin 220 can be provided on the first end of the synchronization link 400. Correspondingly, a first avoidance groove 230 can be opened on the first end of the synchronization link 400; or a first pin 220 can be provided on the first mounting portion 210, and a first axial hole can be provided on the first end of the synchronization link 400. Correspondingly, a first avoidance groove 230 can be opened on the first mounting portion 210. For the second mounting portion 320 and the second end of the synchronization link 400, the above-mentioned connection method can be referred to, and the above-mentioned connection methods can be combined according to actual needs, as long as the rotational connection between the synchronization link 400 and the first swing arm 200 and the second swing arm 300 can be achieved. This embodiment of the present application is not limited to this.

[0048] In an optional embodiment of the present application, as shown in Figures 1 to 8, the hinge mechanism 10 has a first rotation axis and a second rotation axis. The first swing arm 200 rotates relative to the base 100 about the first rotation axis, and the second swing arm 300 rotates relative to the base 100 about the second rotation axis. The first rotation axis and the second rotation axis can be axes of a physical structure or virtual axes based on the movement of the first swing arm 200 and the second swing arm 300.

[0049] The distance between the first rotation axis and the second rotation axis is a first distance, the distance between the first end and the second end of the synchronization link 400 is a second distance, the distance between the first rotation axis and the first end of the synchronization link 400 is a third distance, and the distance between the second rotation axis and the second end of the synchronization link 400 is a fourth distance. The first distance and the second distance are equal, and the third distance and the fourth distance are equal, thereby forming an equivalent parallelogram mechanism between the first swing arm 200, the second swing arm 300, the base 100, and the synchronization link 400. Under the action of the parallelogram mechanism, the first swing arm 200 and the second swing arm 300 can better synchronize their movement relative to the base 100, thereby better preventing the first swing arm 200 and the second swing arm 300 from getting stuck when rotating or sliding with the base 100 or the frame connector 500, thereby improving the stability of the hinge mechanism 10.

[0050] Furthermore, as shown in Figures 1 to 8, the first rotation axis and the second rotation axis are parallel, and the extension direction of the synchronization link 400 is perpendicular to the first rotation axis or the second rotation axis. Compared with other angles, the vertical setting can reduce the span of the synchronization link 400. At the same time, it can further reduce the problem of jamming between the synchronization link 400 and the first swing arm 200 and the second swing arm 300.

[0051] In an optional embodiment of the present application, as shown in Figures 1 to 8, the hinge mechanism 10 may further include a frame connector 500 and a rotating shaft 120. The frame connector 500 is used to connect the frame of the electronic device. The rotating shaft 120 is arranged on the base 100 and is connected to the base 100. One end of the first swing arm 200 is sleeved on the outside of the rotating shaft 120 and is rotatably connected to the base 100 through the rotating shaft 120. Moreover, in order to avoid interference between the first swing arm 200 and the frame connector 500, the first swing arm 200 is also slidably connected to the frame connector 500. When the first swing arm 200 and the base 100 rotate relative to each other, the first swing arm 200 also slides relative to the frame connector 500. A sliding groove may be provided on the frame connector 500 to accommodate the first swing arm 200.

[0052] A bearing 310 is provided at one end of the second swing arm 300, and a slide groove is provided on the base 100. The bearing 310 can be slidably arranged in the slide groove to enable the second swing arm 300 and the base 100 to rotate relative to each other. The second swing arm 300 is connected to the frame of the electronic device via the frame connector 500, thereby driving the frame of the electronic device to switch between a folded state and an unfolded state. A movable connection portion is provided at the other end of the second swing arm 300. The second swing arm 300 can flexibly cooperate with the frame connector 500 via the movable connection portion. The manner of movable cooperation can include sliding, rotating, etc., which can be specifically achieved by cooperating with the rotating shaft 120, the slide groove, and the sliding portion. When the frame connector 500 drives the second swing arm 300 to rotate relative to the base 100, the second swing arm 300 can move relative to the frame connector 500 using the movable connection portion.

[0053] During the folding process of the electronic device, part of the folding angle is provided by the cooperation between the chute and the bearing 310, and the other part of the folding angle is provided by the movement of the second swing arm 300 relative to the frame connector 500. It can be understood that due to the active cooperation between the second swing arm 300 and the frame connector 500, the chute and the bearing 310 do not need to slide excessively relative to each other, and the electronic device can be folded normally. This ensures the overlap between the chute and the bearing 310, prevents the bearing 310 from falling out of the chute, and improves the stability of the hinge mechanism 10. On this basis, the size of the hinge mechanism 10 can be further reduced, which is conducive to the lightweight and thinning of the electronic device.

[0054] In addition, since a synchronous link 400 is provided between the first swing arm 200 and the second swing arm 300, the first swing arm 200 and the second swing arm 300 can be rotated synchronously relative to the base 100 under the action of the synchronous link 400, thereby avoiding the problem of jamming when the slide groove and the bearing 310 are matched, and when the second swing arm 300 and the frame connector 500 are movably matched, thereby improving the stability of the hinge mechanism 10.

[0055] Furthermore, as shown in Figures 1 to 8, the base 100 includes a first side and a second side facing each other. To enhance the stability of the hinge mechanism 10, at least two first swing arms 200 and at least two second swing arms 300 are provided on each of the first and second sides of the base 100. The first and second swing arms 200, 300 are arranged along the length of the base 100. For example, as shown in Figure 8, three first swing arms 200 and two second swing arms 300 are provided on each of the first and second sides of the base 100 along the length of the base 100. A synchronization mechanism 600 is provided between the first swing arm 200 provided on the first side and the first swing arm 200 provided on the second side. The synchronization mechanism 600 may include components such as synchronization gears and a rotating shaft 120. Under the action of the synchronization mechanism, the first swing arms 200 on both sides of the base 100 can rotate synchronously relative to the base 100. In conjunction with the frame connector 500, the frames of the electronic devices located on both sides of the base 100 can rotate synchronously.

[0056] By disposing at least two first swing arms 200 and at least two second swing arms 300 along the length of the base 100, the support area between the first swing arms 200, the second swing arms 300, and the frame connector 500 can be increased, thereby improving the stability of the hinge mechanism 10. This further reduces the size of the hinge mechanism 10, facilitating the thinning and lightweight nature of electronic devices. It should be noted that the length of the base 100 is parallel to the axis of the rotation shaft of the first swing arm 200 or the second swing arm 300.

[0057] A synchronization link 400 is provided between the first swing arm 200 and the second swing arm 300 that are adjacent to each other and are located on the same side of the base 100. For example, the first swing arm 200 and the second swing arm 300 located on the same side of the base 100 can be staggered (that is, among the swing arms located on the same side of the base 100, the two adjacent swing arms are the first swing arm 200 and the second swing arm 300 respectively). Alternatively, the second swing arm 300 can be provided at a position close to the end of the base 100, and multiple first swing arms 200 can be provided between the two second swing arms 300. By providing the synchronization link 400 between the adjacent first swing arms 200 and the second swing arm 300, the stability of the first swing arm 200 and the second swing arm 300 when rotating relative to the base 100 can be further improved, thereby avoiding the problem of the first swing arm 200 and the second swing arm 300 being easily stuck when rotating or sliding with the base 100 or the frame connector 500, thereby improving the stability of the hinge mechanism 10.

[0058] In addition, as shown in Figures 1, 2 and 8, in order to make the hinge mechanism 10 have the effect of damping suspension, the hinge mechanism 10 can also include an elastic member 130, a first movable member 140 and a second movable member 150 arranged on the same side of the base 100, the first swing arm 200 can include a first sub-swing arm 201 and a second sub-swing arm 202, the first sub-swing arm 201 and the second sub-swing arm 202 are located on the same side of the base 100, the first sub-swing arm 201, the first movable member 140, the elastic member 130, the second movable member 150 and the second sub-swing arm 202 are sequentially sleeved on the rotating shaft 120, and the first sub-swing arm 201, the second sub-swing arm 202, the first movable member 140 and the second movable member 150 can slide along the axial direction of the rotating shaft 120. The first sub-swing arm 201 is provided with the first cam portion 203 near a side of the first mobile member 140, the second sub-swing arm 202 is provided with the second cam portion 204 near a side of the second mobile member 150, the first cam portion 203 and the second cam portion 204 are both provided with the first cam surface, the first mobile member 140 and the second mobile member 150 are both provided with the second cam surface, in the first sub-swing arm 201 and the second sub-swing arm 202 relative to base 100 rotational processes, the first cam portion 203 and the second cam portion 204 rotate, and drive the first mobile member 140 and the second mobile member 150 to move toward each other by the first cam surface and the second cam surface respectively, to squeeze elastic member 130, thereby increased the friction force between elastic member 130 and the first mobile member 140 and the second mobile member 150, for the rotational process of the first swing arm 200 provides damping force, and damping force is the basis that hinge mechanism 10 hovers. In addition, also can be according to the hovering angle, the shape of the corresponding design first cam surface and the second cam surface.

[0059] In order to further enhance the damping effect, a third cam portion 205 is provided on the side of the second sub-swing arm 202 facing away from the second movable member 150, the base 100 is provided with a matching portion 160, the third cam portion 205 is provided with a first cam surface, and the matching portion 160 is provided with a second cam surface. During the rotation of the second sub-swing arm 202 relative to the base 100, the third cam portion 205 rotates relative to the matching portion 160, and drives the second sub-swing arm 202 to move toward the second movable member 150 through the first cam surface and the second cam surface, thereby pushing the second movable member 150, so that the second movable member 150 can slide along the axial direction of the rotating shaft 120 under the action of the two cam portions, thereby increasing the stroke of the second movable member 150, so that the elastic member 130 can be further compressed, thereby enhancing the damping effect.

[0060] As shown in FIG9 , the embodiment of the present application further discloses an electronic device 1. The disclosed electronic device 1 may be a mobile phone with a folding function, a tablet computer, an e-book reader, a game console, a wearable device, etc. The embodiment of the present application does not limit the specific type of electronic device.

[0061] The electronic device 1 may include a first device body 20, a second device body 30, and the hinge mechanism 10 in the above embodiment, wherein the first device body 20 is connected to the second device body 30 via the hinge mechanism 10. During the relative rotation of the first device body 20 and the second device body 30, the electronic device 1 switches between the unfolded state and the folded state.

[0062] Optionally, a first swing arm 200, a second swing arm 300, and a frame connector 500 are provided on both sides of the base 100, and the first device body 20 and the second device body 30 are respectively connected to the frame connectors 500 located on both sides of the base 100. Since a synchronization link 400 is provided between the first swing arm 200 and the second swing arm 300, under the action of the synchronization link 400, the first swing arm 200 and the second swing arm 300 can be made to rotate synchronously relative to the base 100, thereby avoiding the problem of the first swing arm 200 and the second swing arm 300 being easily stuck when rotating or sliding with the base 100 or the frame connector 500, thereby improving the stability of the hinge mechanism 10 and further improving the folding reliability of the electronic device. The first device body 20 and the second device body 30 both include the shell described above, and the frame connectors 500 located on both sides of the base 100 are respectively connected to the shell on the same side, thereby achieving connection with the first device body 20 or the second device body 30 on the same side.

[0063] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different technical features between the various embodiments are not contradictory, they can be combined to form more specific embodiments. Considering the simplicity of the text, they will not be repeated here.

[0064] 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 a base, a first swing arm, a second swing arm and a synchronous connecting rod, wherein the first swing arm and the second swing arm are both rotatably connected to the base; The synchronous connecting rod comprises a first end and a second end facing each other, wherein the first end and the second end are respectively rotatably connected to the first swing arm and the second swing arm located on the same side of the base, so that the first swing arm and the second swing arm rotate synchronously relative to the base, wherein: An extension direction of the synchronous connecting rod intersects or is not in the same plane as the rotation axis of the first swing arm or the rotation axis of the second swing arm.

2. The hinge mechanism according to claim 1, wherein: A protruding first mounting portion is provided on the side of the first swing arm facing the second swing arm, a protruding second mounting portion is provided on the side of the second swing arm facing the first swing arm, the first end is rotatably connected to the first mounting portion, and the second end is rotatably connected to the second mounting portion.

3. The hinge mechanism according to claim 2, wherein: Along the extension direction of the synchronization link, a projection of the first mounting portion and a projection of the second mounting portion at least partially overlap.

4. The hinge mechanism according to claim 2, wherein: One of the first mounting portion and the first end is provided with a first pin shaft, and the other is provided with a first shaft hole, the first pin shaft is passed through the first shaft hole and is rotatably matched with the first shaft hole; One of the second mounting portion and the second end is provided with a second pin shaft, and the other is provided with a second shaft hole. The second pin shaft passes through the second shaft hole and is rotatably matched with the second shaft hole.

5. The hinge mechanism according to claim 4, wherein: The first mounting portion is provided with a first avoidance groove, the second mounting portion is provided with a second avoidance groove, and the notch of the first avoidance groove is arranged opposite to the notch of the second avoidance groove; At least a portion of the first end is disposed in the first avoidance groove, the first pin shaft is passed through the first shaft hole, and both ends of the first pin shaft are respectively connected to the groove wall of the first avoidance groove; At least a portion of the second end is disposed in the second avoidance groove, the second pin shaft is passed through the second shaft hole, and both ends of the second pin shaft are respectively connected to the groove walls of the second avoidance groove.

6. The hinge mechanism according to claim 1, wherein: The hinge mechanism has a first rotation axis and a second rotation axis, the first swing arm rotates relative to the base around the first rotation axis, and the second swing arm rotates relative to the base around the second rotation axis; The distance between the first rotation axis and the second rotation axis is a first distance, the distance between the first end and the second end is a second distance, the distance between the first rotation axis and the first end of the synchronization connecting rod is a third distance, and the distance between the second rotation axis and the second end of the synchronization connecting rod is a fourth distance, wherein the first distance is equal to the second distance, and the third distance is equal to the fourth distance.

7. The hinge mechanism according to claim 6, wherein: The first rotation axis is parallel to the second rotation axis, and the extending direction of the synchronous connecting rod is perpendicular to the first rotation axis or the second rotation axis.

8. The hinge mechanism according to claim 1, wherein: The hinge mechanism also includes a frame connecting member and a rotating shaft; The rotating shaft is arranged on the base, one end of the first swing arm is rotatably connected to the base through the rotating shaft, and the first swing arm is slidably connected to the frame connecting member; A bearing is provided at one end of the second swing arm, and a slide groove is provided at the base. The bearing can be slidably arranged in the slide groove so that the second swing arm and the base can rotate relative to each other. A movable connection part is provided at the other end of the second swing arm, and the second swing arm is movably matched with the frame connecting piece through the movable connection part.

9. The hinge mechanism according to claim 8, wherein: The base comprises a first side and a second side opposite to each other, and each of the first side and the second side is provided with at least two first swing arms and at least two second swing arms; A synchronization mechanism is provided between the first swing arm provided on the first side and the first swing arm provided on the second side, and the synchronization mechanism is used to make the first swing arms on both sides of the base rotate synchronously; The synchronous connecting rod is provided between the first swing arm and the second swing arm which are adjacent to each other and are arranged on the same side of the base.

10. An electronic device, comprising a first device body, a second device body, and the hinge mechanism according to any one of claims 1 to 9, 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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