Hinge mechanism and electronic device

Abstract

The application discloses a hinge mechanism and an electronic device, and belongs to the technical field of communication. The hinge mechanism comprises at least two hinge assemblies distributed along the direction of a rotation axis, each hinge assembly comprising a base, a first synchronous swing arm, a second synchronous swing arm, a first sliding piece, a fixed fitting piece and an elastic piece, the first synchronous swing arm and the second synchronous swing arm are rotationally connected with the base, the first synchronous swing arm, the fixed fitting piece 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 piece, the first sliding piece abuts against the first end of the elastic piece, the fixed fitting piece is connected with the base, and the fixed fitting piece is matched with the first synchronous swing arm through plane matching, the second synchronous swing arm is provided with a first driving curved surface, the fixed fitting piece is provided with a second driving curved surface, and the first driving curved surface is matched with the second driving curved surface. The electronic device comprises a first device main body, a second device main body and the hinge mechanism.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a hinge mechanism and an electronic device. Background Technology

[0002] With the development of technology, people are becoming increasingly reliant on electronic devices. To improve the portability and comfort of electronic devices, foldable electronic devices are finding wider and wider applications.

[0003] In related technologies, foldable electronic devices rely on hinge mechanisms to fold and unfold. To ensure a smooth feel during folding and unfolding, damping components need to be incorporated into the hinge mechanism. However, these damping components occupy a significant amount of space and provide limited damping, failing to simultaneously meet the demands for both thinner and lighter electronic devices and improved rotational damping. Summary of the Invention

[0004] The purpose of this application is to provide a hinge mechanism and electronic device that can solve the problem in related technologies where foldable electronic devices cannot simultaneously achieve both thinness and lightness while ensuring rotational damping.

[0005] In a first aspect, embodiments of this application provide a hinge mechanism, including at least two hinge assemblies distributed along the direction of the rotation axis. Each hinge assembly includes a base, a first synchronous swing arm, a second synchronous swing arm, a first sliding member, a fixed fitting member, and an elastic member, wherein:

[0006] The first synchronous swing arm and the second synchronous swing arm are rotatably connected to the base. The first synchronous swing arm, the fixed fitting member, and the second synchronous swing arm are arranged sequentially along the direction of the rotation axis. The first synchronous swing arm cooperates with the first sliding member, and the first sliding member abuts against the first end of the elastic member. The fixed fitting member is connected to the base, and the fixed fitting member and the first synchronous swing arm are connected by a planar fit. The second synchronous swing arm is provided with a first driving curved surface, and the fixed fitting member is provided with a second driving curved surface. The first driving curved surface and the second driving curved surface cooperate.

[0007] When the first synchronous swing arm rotates, it drives the first sliding member to slide along the first direction. The first sliding member acts on the first end of the elastic member. When the second synchronous swing arm rotates, the fixed mating member drives the second synchronous swing arm to slide along the second direction through the first driving surface and the second driving surface. The second synchronous swing arm acts on the second end of the elastic member to cause the elastic member to undergo elastic deformation. The first direction is opposite to the second direction.

[0008] Secondly, embodiments of this application also provide an electronic device, including a first device body, a second device body, and the aforementioned hinge mechanism, wherein the first device body is connected to the second device body via the hinge mechanism;

[0009] 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.

[0010] In this embodiment, each hinge component 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, it acts on the first end of the elastic member through the first sliding member, causing the elastic member to undergo elastic deformation. Moreover, since 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 due to the reaction force of the fixed fitting member. Consequently, the second synchronous swing arm acts on the second end of the elastic member, further causing the elastic member to undergo a larger elastic deformation. Thus, the first synchronous swing arm and the second synchronous swing arm correspond to the same elastic member. Since the slippage generated by the rotation of the first synchronous swing arm and the slippage generated by the sliding of the second synchronous swing arm can both be applied to the same elastic member, the elastic member undergoes a larger elastic deformation, thereby ensuring that the hinge mechanism has a large damping force.

[0011] Therefore, when the diameters of the first synchronous swing arm, the second synchronous swing arm, and the elastic element are small, the electronic device can be made thinner and lighter. At the same time, the first synchronous swing arm and the second synchronous swing arm do not need to correspond to different elastic elements. They can apply force to the same elastic element, reducing the number of elastic elements and thus reducing the axial dimension of the hinge mechanism, avoiding affecting the wiring. Therefore, the solution of this application can achieve both the thinning and lightening of the electronic device and ensure the rotational damping of the foldable electronic device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the hinge mechanism disclosed in the embodiments of this application;

[0013] Figure 2 This is a schematic diagram of the bottom structure of the hinge mechanism when the electronic device is in the unfolded state, as disclosed in the embodiments of this application.

[0014] Figure 3 This is a schematic diagram of the front structure of the hinge mechanism when the electronic device is in the unfolded state, as disclosed in the embodiments of this application.

[0015] Figure 4 This is a schematic diagram of the bottom structure of the hinge mechanism when the electronic device is in a folded state, as disclosed in the embodiments of this application.

[0016] Figure 5 This is a schematic diagram of the front structure of the hinge mechanism when the electronic device is in a folded state, as disclosed in the embodiments of this application.

[0017] Figure 6 This is an exploded view of the hinge mechanism disclosed in the embodiments of this application;

[0018] Figure 7 This is a schematic diagram of the hinge assembly disclosed in the embodiments of this application;

[0019] Figure 8 This is a schematic diagram of the bottom structure of the hinge assembly when the electronic device is in the unfolded state, as disclosed in the embodiments of this application.

[0020] Figure 9 This is a schematic diagram of the front structure of the hinge assembly when the electronic device is in the unfolded state, as disclosed in the embodiments of this application.

[0021] Figure 10 This is a schematic diagram of the bottom structure of the hinge assembly when the electronic device is in a folded state, as disclosed in an embodiment of this application.

[0022] Figure 11 This is a schematic diagram of the front structure of the hinge assembly when the electronic device is in a folded state, as disclosed in the embodiments of this application.

[0023] Figure 12 This is an exploded view of the hinge assembly disclosed in the embodiments of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10-Hinge assembly

[0026] 100 - base, 110 - spaced protrusions, 120 - slots

[0027] 210 - First synchronous swing arm, 211 - First rotating part, e - Fifth driving surface, 212 - First meshing tooth, 213 - Second meshing tooth

[0028] 220 - Second synchronous swing arm, 221 - Second rotating part, a - First driving surface, c - Third driving surface, 310 - First sliding member, f - Sixth driving surface

[0029] 320 - Second slider, d - Fourth driving surface

[0030] 330 - Fixed mating part, b - Second driving surface

[0031] 400 - Elastic component, 410 - First elastic component, 420 - Second elastic component

[0032] 500 - Shaft, 510 - First shaft, 520 - Second shaft, 530 - Shaft cap, 540 - Groove

[0033] 610-Fixed bracket, 620-Flexible bracket, 630-Snap ring,

[0034] 710 - First transmission gear, 720 - Second transmission gear

[0035] 800 - Frame, 810 - Pin,

[0036] 900 - Virtual swing arm, 910 - Connector

[0037] 20-Door panel,

[0038] 30 - Connecting bracket. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0040] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0041] The hinge mechanism and electronic device provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0042] Please refer to Figures 1-12 The hinge mechanism disclosed in this application includes at least two hinge assemblies 10 distributed along the direction of the rotation axis. 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. The base 100 serves as the mounting 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 may be, but is not limited to, a spring.

[0043] The first synchronous swing arm 210 and the second synchronous swing arm 220 are rotatably connected to the base 100, and their rotation axes are collinear. Optionally, the base 100 may 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 rotatably engaged with the rotating shaft 500. Of course, the first synchronous swing arm 210 and the second synchronous swing arm 220 may also be rotatably connected to the base 100 in other ways.

[0044] The first synchronous swing arm 210, the fixed fitting 330, and the second synchronous swing arm 220 are arranged sequentially along the direction of the rotation axis. The first synchronous swing arm 210 engages 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 has a first rotating part 211, which engages with the first sliding member 310. Thus, when the first synchronous swing arm 210 rotates, it drives the first sliding member 310 to slide along a first direction. The first sliding member 310 acts on the first end of the elastic member 400, causing the elastic member 400 to undergo elastic deformation.

[0045] The fixed fitting 330 is connected to the base 100, and its position relative to the base 100 is fixed. The fixed fitting 330 and the first synchronous swing arm 210 are engaged via a planar fit; 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 face of the fixed fitting 330 facing the first synchronous swing arm 210 is a first plane, and the end face 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 fit.

[0046] The second synchronous swing arm 220 is provided with a first driving surface a, and the fixed fitting member 330 is provided with a second driving surface b. The first driving surface a and the second driving surface b cooperate with each other. Optionally, the second synchronous swing arm 220 is provided with a second rotating part 221, and the first driving surface a is disposed on the second rotating part 221. The second rotating part 221 cooperates with the fixed fitting member 330 through the first driving surface a and the second driving surface b. The first driving surface a is disposed at one end of the second rotating part 221 facing the fixed fitting member 330, and the second driving surface b is disposed at one end of the fixed fitting member 330 facing the second rotating part 221. One of the first driving surface a and the second driving surface b includes a first concave surface, and the other includes a first convex surface. The first concave surface and the first convex surface cooperate with each other. Further optionally, the first driving surface a and the second driving surface b each include multiple first concave surfaces and multiple first convex surfaces, and the first concave surfaces and the first convex surfaces are alternately distributed in the circumferential direction of the second synchronous swing arm 220.

[0047] Thus, when the second synchronous swing arm 220 rotates, under the combined action of the first driving surface a and the second driving surface b, the fixed mating part 330 drives the second synchronous swing arm 220 to slide along the second direction. The second synchronous swing arm 220 acts on the second end of the elastic element 400, causing the elastic element 400 to undergo further elastic deformation. The first direction is opposite to the second direction. Therefore, the first sliding part 310 and the second synchronous swing arm 220 act on the elastic element 400 from different directions, which is beneficial to increasing the elastic deformation of the elastic element 400.

[0048] In this embodiment, each hinge assembly 10 of the hinge mechanism is provided 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 undergo elastic deformation. Moreover, relying on the first driving surface a and the second driving surface b, the second synchronous swing arm 220 slides under the reaction force of the fixed fitting member 330 when it rotates, and then the second synchronous swing arm 220 acts on the second end of the elastic member 400, further causing the elastic member 400 to undergo a larger elastic deformation. Thus, the first synchronous swing arm 210 and the second synchronous swing arm 220 correspond to the same elastic member 400. Since the sliding amount generated by the rotation of the first synchronous swing arm 210 and the sliding amount generated by the sliding of the second synchronous swing arm 220 can both be applied to the same elastic member 400, the elastic member 400 will undergo a larger elastic deformation, so as to ensure that the hinge mechanism has a large damping force.

[0049] Therefore, when the diameters of the first synchronous swing arm 210, the second synchronous swing arm 220, and the elastic element 400 are small, the electronic device can be made thinner and lighter. At the same time, the first synchronous swing arm 210 and the second synchronous swing arm 220 do not need to correspond to different elastic elements 400. They can both apply force to the same elastic element 400, reducing the number of elastic elements 400, thereby reducing the axial dimension of the hinge mechanism and avoiding affecting the wiring. Therefore, the solution of this application can achieve both the thinning and lightening of the electronic device and the reduction of the axial dimension, thus realizing the miniaturization of the electronic device.

[0050] In an optional embodiment, each hinge assembly 10 further includes a second sliding member 320. The second sliding member 320 and the fixed fitting member 330 are respectively located on both sides 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 connected by a planar fit. Thus, when the second synchronous swing arm 220 slides along the second direction, it abuts against the second sliding member 320, and the second sliding member 320 acts on the second end of the elastic member 400. The sliding amount of the second sliding member 320 is only generated by the sliding of the second synchronous swing arm 220.

[0051] In another embodiment, the second synchronous swing arm 220 is provided with a third driving surface c, and the second sliding member 320 is provided with a fourth driving surface d. The third driving surface c and the fourth driving surface d cooperate with each other. When the second synchronous swing arm 220 rotates, it drives the second sliding member 320 to slide along the second direction through the third driving surface c and the fourth driving surface d. The second sliding member 320 acts on the second end of the elastic member 400. Optionally, the second rotating part 221 is provided with a first driving surface a and a third driving surface c at both ends along the axis of rotation 500. One of the third driving surface c and the fourth driving surface d includes a second concave surface, and the other includes a second convex surface. The second concave surface and the second convex surface cooperate with each other. Further optionally, both the third driving surface c and the fourth driving surface d include multiple second concave surfaces and multiple second convex surfaces. The second concave surfaces and the second convex surfaces are alternately distributed in the circumferential direction of the second synchronous swing arm 220.

[0052] In this embodiment, when the second synchronous swing arm 220 rotates, it drives the second sliding member 320 to slide further along the second direction. That is, the sliding amount of the second sliding member 320 is generated by the rotation and sliding of the second synchronous swing arm 220. This is beneficial for further increasing the sliding amount 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 improving the damping effect of the hinge mechanism. Furthermore, while ensuring a constant damping effect of the hinge mechanism, it is beneficial for further reducing the number of elastic members 400 and decreasing the axial dimension of the hinge mechanism.

[0053] In an optional embodiment, the first synchronous swing arm 210 is provided with a fifth driving surface e, and the first sliding member 310 is provided with a sixth driving surface f. The fifth driving surface e and the sixth driving surface f cooperate with each other, and when the first synchronous swing arm 210 rotates, the fifth driving surface e and the sixth driving surface f drive the first sliding member 310 to slide along a first direction. Optionally, the fifth driving surface e is disposed on the first rotating part 211, and one of the fifth driving surface e and the sixth driving 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 driving surface e and the sixth driving surface f include multiple third concave surfaces and multiple third convex surfaces, with the third concave surfaces and third convex surfaces alternately distributed in the circumferential direction of the first synchronous swing arm 210.

[0054] In this embodiment, the first synchronous swing arm 210 and the first sliding member 310 do not need to be equipped with a complex mating structure. Only a simple curved surface structure is needed to achieve the mating of the two, which helps to simplify the structure of the first synchronous swing arm 210 and the first sliding member 310.

[0055] 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.

[0056] In one optional embodiment, the base 100 is provided with a spacer protrusion 110. A second sliding member 320, a second synchronous swing arm 220, a fixed fitting member 330, the spacer protrusion 110, a first synchronous swing arm 210, and a first sliding member 310 are sequentially arranged. The fixed fitting member 330 abuts against the spacer protrusion 110 and engages with the first synchronous swing arm 210 planarly via the spacer protrusion 110. The first sliding member 310 and the second sliding member 320 are directly connected to the two ends of the elastic member 400, respectively. Thus, when the first sliding member 310 and the second sliding member 320 slide, the elastic member 400 is stretched. Optionally, the spacer protrusion 110 is located at the end of the base 100, and the spacer protrusion 110 and the base 100 can be an integral structure.

[0057] In another embodiment, such as Figure 12 As shown, the hinge assembly 10 also includes a pivot 500. The elastic element 400 includes a first elastic element 410, a second sliding element 320, a second synchronous swing arm 220, a fixed fitting element 330, a spacer protrusion 110, the first synchronous swing arm 210, the first sliding element 310, and the first elastic element 410, which are sequentially sleeved on the outside of the pivot 500. The second sliding element 320 acts on the second end of the elastic element 400 through the pivot 500. At this time, the elastic element 400 is located on the side of the first sliding element 310 facing away from the first synchronous swing arm 210. Specifically, one end of the pivot 500 is connected to the second sliding element 320, and the second end of the pivot 500 is connected to the second end of the elastic element 400. Thus, when the second sliding element 320 slides in the second direction, it drives the pivot 500 to move in the same direction. When the pivot 500 moves, it drives the second end of the elastic element 400 to move, thereby causing the elastic element 400 to undergo elastic deformation.

[0058] In this embodiment, the hinge assembly 10 provides support for each component through the pivot 500, and also ensures that the second sliding member 320 applies a force to the elastic member 400 when sliding, which helps to improve the stability of the hinge assembly 10.

[0059] In one optional embodiment, the first synchronous swing arm 210 is provided with a first rotating part 211, which cooperates with the first sliding member 310, and the first rotating part 211 directly abuts against the spacer protrusion 110. In another embodiment, the hinge assembly 10 further includes a fixed bracket 610, which is connected to the base 100, that is, the position of the fixed bracket 610 relative to the base 100 is fixed, specifically, 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 slides with the rotating shaft 500, and the fixed bracket 610 is located between the spacer protrusion 110 and the first rotating part 211. Thus, while the hinge mechanism is made relatively thin, the wall thickness of the spacer protrusion 110 and the base 100 is also small. The fixed fitting 330 and the first rotating part 211 act on the spacer protrusion 110 at the same time. The spacer protrusion 110 has a large bearing capacity, so the fixed bracket 610 is set to bear the force of the first rotating part 211. The fixed fitting 330 and the first rotating part 211 act on different components, avoiding excessive force on the base 100 and the spacer protrusion 110, which helps to improve the safety performance of the hinge mechanism.

[0060] In one alternative embodiment, only one first synchronous swing arm 210 may be provided, meaning that the hinge assembly 10 can only achieve folding or unfolding on one side.

[0061] In another embodiment, there are at least two first synchronous swing arms 210, with the two first synchronous swing arms 210 located on both sides of the base 100, and each having a plurality of first meshing teeth 212 and a plurality of second meshing teeth 213 arranged circumferentially along the rotation axis. The rotation axes of the first synchronous swing arms 210 and the second synchronous swing arms 220 are parallel, and the first meshing teeth 212 and the second meshing teeth 213 are engaged in transmission. The first meshing teeth 212 and the second meshing teeth 213 are located between the fixed bracket 610 and the spacer protrusion 110. The first meshing teeth 212 are part of the first synchronous swing arm 210, and the second meshing teeth 213 are part of the second synchronous swing arm 220. The fixed fitting member 330 is in planar engagement with the first meshing teeth 212 or the second meshing teeth 213 through the spacer protrusion 110.

[0062] In this embodiment, the space between the spacer protrusion 110 and the fixed bracket 610 is 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, so as to realize the synchronous folding and synchronous unfolding of the two, which is beneficial to improve the folding efficiency and unfolding efficiency.

[0063] In optional embodiments, such as Figure 8As shown, the hinge assembly 10 also 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, and the first meshing teeth 212, the first transmission gear 710, the second transmission gear 720, and the second meshing teeth 213 mesh sequentially. In this embodiment, the first transmission gear 710 and the second transmission gear 720 are arranged between the first meshing teeth 212 and the second meshing teeth 213. There is a gap 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 beneficial to reduce the thickness of the hinge assembly 10 and achieve a thinner and lighter hinge mechanism.

[0064] Of course, in other embodiments, the hinge assembly 10 may not have the first transmission gear 710 and the second transmission gear 720, and the first meshing tooth 212 and the second meshing tooth 213 may mesh directly.

[0065] In optional embodiments, such as Figure 12 As shown, the hinge assembly 10 also includes a retaining ring 630. The second end of the rotating shaft 500 has a groove 540. The retaining ring 630 is sleeved on the outside of the rotating shaft 500, with a portion of the retaining ring 630 extending into the groove 540 to fix the retaining ring 630 relative to the rotating shaft 500. Due to the limiting effect of the groove sidewall of the groove 540, the retaining ring 630 and the rotating shaft 500 are engaged in an axial upper limit fit. Optionally, the groove 540 on the rotating shaft 500 is an annular groove, and the retaining ring 630 can extend into the annular groove by snapping, i.e., the retaining ring 630 and the rotating shaft 500 are engaged in a snap-fit ​​fit. Furthermore, the second sliding member 320 and the retaining ring 630 are engaged in an axial upper limit fit on the rotating shaft 500. Optionally, the second sliding member 320 and the retaining ring 630 are in axial upper limit contact on the rotating shaft 500. When the second sliding member 320 slides, it acts on the second end of the elastic member 400 through the retaining ring 630 and the rotating shaft 500. Specifically, when the second sliding member 320 slides along the second direction, it abuts against the retaining ring 630. Since the retaining ring 630 is relatively fixed to the rotating shaft 500, the retaining ring 630 can drive the rotating shaft 500 to move along the second direction, thereby acting on the second end of the elastic member 400.

[0066] Through the mating structure of the retaining ring 630 and the pivot 500, the retaining ring 630 can be installed on the pivot 500 and removed from the pivot 500. Therefore, the user can install the pivot 500 as needed to assemble the various parts of the hinge assembly 10, and can also disassemble the pivot 500 and other parts as needed.

[0067] Of course, in other embodiments, the hinge assembly 10 may not have the retaining ring 630, and the second end of the pivot 500 may have a limiting protrusion directly provided, with the second sliding member 320 directly engaging with the limiting protrusion in the axial direction of the pivot 500. Optionally, the limiting protrusion and the pivot 500 may be an integral structure.

[0068] In one 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 element 400 is a first elastic element 410, and the number of first elastic elements 410 is at least two. The number of first synchronous swing arms 210, second synchronous swing arms 220, and first elastic elements 410 are all at least two, wherein the two first synchronous swing arms 210, the two second synchronous swing arms 220, and the two first elastic elements 410 are respectively sleeved on the first rotating shaft 510 and the second rotating shaft 520. Thus, during the synchronous rotation of the first synchronous swing arms 210 and the second synchronous swing arms 220, the first sliding element 310 and the second sliding element 320 simultaneously act on at least two first elastic elements 410, that is, at least two first elastic elements 410 simultaneously generate elastic deformation, which is beneficial to improve the damping force and improve the damping feel.

[0069] Optionally, the retaining ring 630 includes a first ring body and a second ring body connected together. Both the first ring body and the second ring body are 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 engaged with the first rotating shaft 510, and the second ring body is engaged with the second rotating shaft 520, so that the retaining ring 630 can be engaged and connected with both the first rotating shaft 510 and the second rotating shaft 520 at the same time.

[0070] In another embodiment, reference Figures 7-12 As shown, the number of elastic elements 400 is at least two, including a first elastic element 410 and a second elastic element 420. The two first elastic elements 410 are respectively sleeved on the first rotating shaft 510 and the second rotating shaft 520, and the second elastic element 420 is located between the first rotating shaft 510 and the second rotating shaft 520. Thus, when the first sliding element 310 and the second sliding element 320 slide, they also act on both ends of the second elastic element 420. By adding a second elastic element 420 between the first rotating shaft 510 and the second rotating shaft 520 in this embodiment, the space between the two first elastic elements 410 is fully utilized, which helps to further increase the total deformation of the elastic element 400, and further enhances the damping force and damping feel.

[0071] In a further embodiment, the hinge assembly 10 further includes an elastic bracket 620. Both the end of the first rotating shaft 510 and the end of the second rotating shaft 520 are provided with axle caps 530. The elastic bracket 620 is sleeved on the outside of the first rotating shaft 510 and the second rotating shaft 520, and the elastic bracket 620 is in upper limit engagement with the axle caps 530 of the first rotating shaft 510 and the second rotating shaft 520 in the direction of the rotation axis. Furthermore, the elastic element 400 is in upper limit engagement with the elastic bracket 620 in the direction of the rotation axis. Specifically, the elastic bracket 620 has 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 along the second direction, the axle caps 530 move with the corresponding rotating shaft 500, and the axle caps 530 act on each elastic element 400 through the elastic bracket 620.

[0072] Optionally, the first sliding member 310 is provided with a first mounting post, the elastic bracket 620 is provided with a second mounting post, the first end of the second elastic member 420 is sleeved on the first mounting post, and the second end of the second elastic member 420 is sleeved on the second mounting post, thereby realizing the installation of the second elastic member 420.

[0073] In an optional embodiment, the hinge assembly 10 further includes a frame 800, a first synchronous swing arm 210 fixedly connected to the frame 800, and a second synchronous swing arm 220 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 the second synchronous swing arm 220 can slide along the direction of the rotation axis under the action of the fixed engagement member 330 when rotating. Optionally, frames 800 are provided on both sides of the base 100.

[0074] 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 slide groove and a second slide groove 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 extends into the first slide groove, and the first slider and the first slide groove are slidably engaged along the radial direction of the rotation axis. The second slider extends into the second slide groove, and the second slider and the second slide groove are slidably engaged along the radial direction of the rotation axis and the direction of the rotation axis, respectively.

[0075] 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 in the radial direction of the first synchronous swing arm 210 during rotation. Therefore, this embodiment is adopted so that the first synchronous swing arm 210 and the second synchronous swing arm 220 can 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 slide with the frame 800 respectively, which is beneficial to improving the stability of the hinge mechanism during folding or unfolding.

[0076] In one optional embodiment, the hinge assembly 10 further includes a virtual swing arm 900. The base 100 has a slot 120 with an opening. The virtual swing arm 900 extends into the slot 120 through the opening, and the virtual swing arm 900 is rotatably engaged with the base 100, with the opening in an open state. In another embodiment, combined with... Figures 7-8 as well as Figure 12 As shown, the hinge assembly 10 also includes a connector 910, which is connected to the base 100 and located at the slot to close it. Optionally, the connector 910 can be a cover plate, which can be welded to the slot. In this embodiment, the connector 910 closes the slot, preventing breaks in the base 100 and improving the rigidity and support performance of the hinge mechanism.

[0077] Optionally, the virtual swing arm 900 and the frame 800 can be rotatably connected by a pin 810. When the frame 800 rotates, it drives the virtual swing arm 900, the first synchronous swing arm 210 and the second synchronous swing arm 220 to rotate.

[0078] In an optional embodiment, refer to Figures 1-6 As shown, the hinge mechanism also includes a door panel 20 and a connecting bracket 30. Two adjacent hinge components 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 components 10, and the second end of the door panel 20 is connected to the base 100 of the other hinge component 10. The connecting bracket 30 is connected to the frame 800 of each hinge component 10 located on the same side of the base 100. Connecting brackets 30 can be provided on both sides of the hinge component 10.

[0079] Based on the hinge mechanism disclosed in this application, this application also provides an electronic device. The electronic device includes a first device body, a second device body, and the hinge mechanism described in the above embodiments. The first device body is connected to the second device body via the hinge mechanism. During the relative rotation of the first and second device bodies, the electronic device switches between an unfolded state and a folded state. Optionally, the first and second device bodies are respectively connected to connecting brackets 30 located on both sides of the hinge assembly 10. The structure provided by this solution enables the first and second device bodies of the electronic device to rotate synchronously and saves internal space in the electronic device.

[0080] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A hinge mechanism, characterized by It includes at least two hinge assemblies distributed along the direction of the rotation axis, each hinge assembly including a base, a first synchronous swing arm, a second synchronous swing arm, a first sliding member, a fixed fitting member, and an elastic member, wherein: The first synchronous swing arm and the second synchronous swing arm are rotatably connected to the base. The first synchronous swing arm, the fixed fitting member, and the second synchronous swing arm are arranged sequentially along the direction of the rotation axis. The first synchronous swing arm cooperates with the first sliding member, and the first sliding member abuts against the first end of the elastic member. The fixed fitting member is connected to the base, and the fixed fitting member and the first synchronous swing arm are connected by a planar fit. The second synchronous swing arm is provided with a first driving curved surface, and the fixed fitting member is provided with a second driving curved surface. The first driving curved surface and the second driving curved surface cooperate. Each of the hinge assemblies further includes a second slider, the second slider and the fixed engagement member being located on opposite sides of the second synchronous swing arm along the rotation axis; The hinge assembly further includes a pivot, and the elastic element includes a first elastic element. The second sliding element, the second synchronous swing arm, the fixed fitting element, the first synchronous swing arm, the first sliding element, and the first elastic element are sequentially sleeved on the outside of the pivot. The first end of the pivot is connected to the second sliding element, and the second end of the pivot is provided with a pivot cap. When the first synchronous swing arm rotates, it drives the first sliding member to slide along the first direction. The first sliding member acts on the first end of the elastic member. When the second synchronous swing arm rotates, the fixed mating member drives the second synchronous swing arm to slide along the second direction through the first driving surface and the second driving surface. The second synchronous swing arm abuts against the second sliding member. The second sliding member drives the rotating shaft to move in the same direction. The shaft cap moves with the rotating shaft and acts on the second end of the first elastic member to cause the first elastic member to undergo elastic deformation. The first direction is opposite to the second direction.

2. The hinge mechanism according to claim 1, characterized in that, The second synchronous swing arm is provided with a third driving surface, and the second sliding member is provided with a fourth driving surface, the third driving surface and the fourth driving surface cooperate with each other; When the second synchronous swing arm rotates, it drives the second sliding member to slide along the second direction through the third driving surface and the fourth driving surface, and the second sliding member acts on the second end of the first elastic member.

3. The hinge mechanism according to claim 1, characterized in that, The base is provided with spaced protrusions. The second sliding member, the second synchronous swing arm, the fixed fitting member, the spaced protrusions, the first synchronous swing arm, the first sliding member, and the first elastic member are sequentially sleeved on the outside of the rotating shaft. The fixed fitting member abuts against the spaced protrusions, and the fixed fitting member engages with the first synchronous swing arm planarly through the spaced protrusions.

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

5. The hinge mechanism according to claim 4, characterized in that, 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 are respectively provided with a plurality of first meshing teeth and a plurality of second meshing teeth along the circumference of the rotation axis. The first meshing teeth and the second meshing teeth are engaged in transmission, and the first meshing teeth and the second meshing teeth are located between the fixed bracket and the spacer protrusion. The fixed fitting member is engaged with the first meshing teeth or the second meshing teeth plane through the spacer protrusion.

6. The hinge mechanism of claim 5, wherein, The hinge assembly further includes a first transmission gear and a second transmission gear, the first transmission gear and the second transmission gear being located between the first meshing tooth and the second meshing tooth, and the first meshing tooth, the first transmission gear, the second transmission gear and the second meshing tooth meshing in sequence.

7. The hinge mechanism according to claim 1, characterized in that, The hinge assembly further includes a retaining ring. The second end of the rotating shaft is provided with a groove. The retaining ring is sleeved on the outside of the rotating shaft, and a portion of the retaining ring extends into the groove to fix the retaining ring relative to the rotating shaft. The second sliding member and the retaining ring are engaged in an axial upper limit cooperation on the rotating shaft. When the second sliding member slides, it acts on the second end of the first elastic member through the retaining ring and the rotating shaft.

8. The hinge mechanism of claim 1, wherein, The number of rotating shafts is at least two, including a first rotating shaft and a second rotating shaft. The number of elastic elements is at least two, including a first elastic element and a second elastic element. The number of the first synchronous swing arm, the second synchronous swing arm, and the first elastic element is at least two. The two first synchronous swing arms, the two second synchronous swing arms, and the two first elastic elements are respectively sleeved on the first rotating shaft and the second rotating shaft. The second elastic element is located between the first rotating shaft and the second rotating shaft.

9. The hinge mechanism according to claim 1, characterized in that, The hinge assembly further includes a frame, wherein the first synchronous swing arm and the second synchronous swing arm are respectively slidably engaged with the frame along the radial direction of the first synchronous swing arm, and the second synchronous swing arm is slidably engaged with the frame along the direction of the rotation axis.

10. The hinge mechanism according to claim 1, characterized in that, The hinge assembly further includes a virtual swing arm and a connector. The base has a slot with an opening. The virtual swing arm extends into the slot through the opening and rotates with the base. The connector is connected to the base and is located at the opening to close the opening.

11. The hinge mechanism according to claim 1, characterized in that, The first synchronous swing arm is provided with a fifth driving surface, and the first sliding member is provided with a sixth driving surface. The fifth driving surface and the sixth driving 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 surface and the sixth driving surface.

12. An electronic device, comprising: It includes a first device body, a second device body, and a hinge mechanism as described in any one of claims 1-11, 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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