Hinge assemblies and electronic devices

Abstract

This application discloses a hinge assembly and an electronic device, belonging to the field of communication technology. The hinge assembly is used to rotatably connect a first device body and a second device body of the electronic device. The hinge assembly includes a base, a first synchronous swing arm and a second synchronous swing arm rotatably connected to the base, and a linkage synchronization mechanism. The first synchronous swing arm is connected to the linkage synchronization mechanism through a first helical structure, and the second synchronous swing arm is connected to the linkage synchronization mechanism through a second helical structure. Both the first and second synchronous swing arms can rotate relative to the linkage synchronization mechanism. During the switching between an unfolded state and a folded state of the electronic device, the first synchronous swing arm rotates and drives the linkage synchronization mechanism to move through the first helical structure, and the linkage synchronization mechanism drives the second synchronous swing arm to rotate through the second helical structure; or, the second synchronous swing arm rotates and drives the linkage synchronization mechanism to move through the second helical structure, and the linkage synchronization mechanism drives the first synchronous swing arm to rotate through the first helical structure.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a hinge assembly and an electronic device. BACKGROUND

[0002] With the development of science and technology, people's dependence on electronic devices is getting higher and higher. In order to pursue better visual experience, the display screen size of electronic devices is getting larger and larger, and the portability and use comfort of electronic devices are greatly compromised.

[0003] In order to not affect the portability and use comfort of electronic devices, the application range of folding electronic devices is getting wider and wider. In the related art, folding electronic devices rely on the meshing of gear sets to realize synchronous folding or synchronous unfolding. However, since adjacent gears are meshed by teeth, and the meshed teeth have a tooth gap, that is, a certain fitting tolerance, the folding electronic device is prone to shaking during folding or unfolding, so that the transmission stability is poor, and therefore the stability of the folding electronic device is poor. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a hinge assembly and an electronic device, which can solve the problem of poor stability of folding electronic devices in the related art.

[0005] In a first aspect, the embodiments of the present application provide a hinge assembly for rotationally connecting a first device main body and a second device main body of an electronic device, the hinge assembly comprising a seat body, a first synchronous swing arm, a second synchronous swing arm and a linkage synchronization mechanism, the first synchronous swing arm and the second synchronous swing arm being rotationally connected with the seat body respectively, the first synchronous swing arm being connected with the linkage synchronization mechanism through a first spiral structure, the second synchronous swing arm being connected with the linkage synchronization mechanism through a second spiral structure, and the first synchronous swing arm and the second synchronous swing arm being rotatable relative to the linkage synchronization mechanism.

[0006] During switching of the electronic device between a folded state and an unfolded state, the first synchronous swing arm rotates and drives the linkage synchronization mechanism to move through the first spiral structure, the linkage synchronization mechanism drives the second synchronous swing arm to rotate through the second spiral structure, or the second synchronous swing arm rotates and drives the linkage synchronization mechanism to move through the second spiral structure, and the linkage synchronization mechanism drives the first synchronous swing arm to rotate through the first spiral structure.

[0007] In a second aspect, the embodiments of the present application further provide an electronic device comprising the above-mentioned hinge assembly.

[0008] In the embodiment of the present application, when an external force acts on the first synchronous swing arm, the first synchronous swing arm rotates and drives the linkage synchronous mechanism to move through the first spiral structure, the linkage synchronous mechanism moves and drives the second synchronous swing arm to rotate through the second spiral structure, realizing synchronous rotation of the first synchronous swing arm and the second synchronous swing arm. Conversely, when an external force acts on the second synchronous swing arm, the principle is the same. When an external force acts on the second synchronous swing arm, the second synchronous swing arm rotates and drives the linkage synchronous mechanism to move through the second spiral structure, the linkage synchronous mechanism moves and drives the first synchronous swing arm to rotate through the first spiral structure, realizing synchronous rotation of the first synchronous swing arm and the second synchronous swing arm.

[0009] In this way, the gear engagement mode of the gear set is avoided, the first synchronous swing arm is connected to the linkage synchronous mechanism through the first spiral structure, and similarly, the second synchronous swing arm is connected to the linkage synchronous mechanism through the second spiral structure, that is, the first synchronous swing arm and the linkage synchronous mechanism, and the linkage synchronous mechanism and the second synchronous swing arm are closely matched, and the transmission stability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a structural schematic diagram of an electronic device in a folded state disclosed by an embodiment of the present application;

[0011] Figure 2 is a structural schematic diagram of a hinge assembly disclosed by an embodiment of the present application;

[0012] Figure 3 is a structural schematic diagram of a hinge assembly from another perspective disclosed by an embodiment of the present application;

[0013] Figure 4 is an exploded view of a hinge assembly disclosed by an embodiment of the present application;

[0014] Figure 5 is an exploded view of a first synchronous swing arm, a second synchronous swing arm and a first sliding part disclosed by an embodiment of the present application;

[0015] Figure 6 is a structural schematic diagram of a hinge assembly disclosed by another embodiment of the present application;

[0016] Figure 7 is an exploded view of a hinge assembly disclosed by another embodiment of the present application;

[0017] Figure 8 is an exploded view of a first synchronous swing arm, a second synchronous swing arm and a first sliding part disclosed by another embodiment of the present application;

[0018] Figure 9 is a structural schematic diagram of a hinge assembly when an electronic device is in an unfolded state disclosed by an embodiment of the present application;

[0019] Figure 10 This is a schematic diagram of the hinge assembly in the unfolded state of the electronic device, as disclosed in an embodiment of this application, from another perspective.

[0020] Figure 11 This is a schematic diagram of the hinge assembly in the case of an electronic device in a folded state, as disclosed in an embodiment of this application.

[0021] Figure 12 This is a schematic diagram of the hinge assembly disclosed in this application when the electronic device is in a folded state, viewed from another perspective.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100-First equipment body,

[0024] 200-Second Equipment Body

[0025] 300-Hinge Assembly

[0026] 310 - First synchronous swing arm, a - First helical groove, 311 - First stud, e - First driving wedge surface

[0027] 320 - Second synchronous swing arm, c - Second helical groove, 321 - Second stud, g - Third drive wedge surface

[0028] 330 - First sliding component, b - First protrusion, d - Second protrusion, 331 - First threaded sleeve, 332 - Second threaded sleeve, 333 - First connecting part, 334 - Positioning pin

[0029] 340 - base, 341 - base plate, 342 - cover plate

[0030] 351 - First rotating shaft, 352 - Second rotating shaft

[0031] 360 - Second sliding component, 361 - First sliding part, f - Second driving wedge surface, 362 - Second sliding part, h - Fourth driving wedge surface, 363 - Second connecting part

[0032] 371 - First elastic element, 372 - Second elastic element, 373 - Third elastic element

[0033] 381-First connector, 382-Second connector

[0034] 391 - First virtual swing arm, 392 - Second virtual swing arm. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] The electronic device provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0038] Please refer to Figures 1-12 The hinge assembly 300 disclosed in this application is used to rotatably connect a first device body 100 and a second device body 200 of an electronic device. The hinge assembly 300 includes a base 340, a first synchronous swing arm 310, a second synchronous swing arm 320, and a linkage synchronization mechanism. The base 340 serves as the mounting foundation for the first synchronous swing arm 310, the second synchronous swing arm 320, and the linkage synchronization mechanism. Both the first synchronous swing arm 310 and the second synchronous swing arm 320 are rotatably connected to the base 340. The first synchronous swing arm 310 can be connected to the first device body 100 of the electronic device, and the second synchronous swing arm 320 can be connected to the second device body 200 of the electronic device.

[0039] The first synchronous swing arm 310 is connected to the linkage synchronization mechanism via a first helical structure, and the second synchronous swing arm 320 is connected to the linkage synchronization mechanism via a second helical structure. Both the first and second synchronous swing arms 310 can rotate relative to the linkage synchronization mechanism. During the switching between the unfolded and folded states of the electronic device, the first synchronous swing arm 310 rotates and drives the linkage synchronization mechanism to move via the first helical structure, and the linkage synchronization mechanism drives the second synchronous swing arm 320 to rotate via the second helical structure; or, the second synchronous swing arm 320 rotates and drives the linkage synchronization mechanism to move via the second helical structure, and the linkage synchronization mechanism drives the first synchronous swing arm 310 to rotate via the first helical structure.

[0040] In this embodiment, when an external force is applied to the first synchronous swing arm 310, the first synchronous swing arm 310 rotates, and drives the linkage synchronization mechanism to move through the first helical structure. When the linkage synchronization mechanism moves, it can drive the second synchronous swing arm 320 to rotate through the second helical structure, thus achieving synchronous rotation of the first synchronous swing arm 310 and the second synchronous swing arm 320. Conversely, the principle is the same when an external force is applied to the second synchronous swing arm 320. When an external force is applied to the second synchronous swing arm 320, the second synchronous swing arm 320 rotates, and drives the linkage synchronization mechanism to move through the second helical structure. When the linkage synchronization mechanism moves, it can drive the first synchronous swing arm 310 to rotate through the first helical structure, thus achieving synchronous rotation of the first device body 100 and the second device body 200 of the electronic device.

[0041] Thus, the solution provided in this application avoids the gear meshing method of the gear set. The first synchronous swing arm 310 is connected to the linkage synchronization mechanism through the first helical structure. Similarly, the second synchronous swing arm 320 is connected to the linkage synchronization mechanism through the second helical structure. That is, the first synchronous swing arm 310 and the linkage synchronization mechanism, and the linkage synchronization mechanism and the second synchronous swing arm 320 are closely matched, and the transmission stability is improved.

[0042] In one alternative embodiment, combined with Figure 2 , Figure 4 and Figure 5 As shown, the linkage synchronization mechanism includes a first sliding component 330. The first helical structure includes a first helical groove a and a first protrusion b. One of the first synchronization swing arm 310 and the first sliding component 330 is provided with the first helical groove a, and the other is provided with the first protrusion b. The first protrusion b engages with the first helical groove a and can move along the helical direction of the first helical groove a, so that the first synchronization swing arm 310 and the first sliding component 330 can move relative to each other along the helical direction of the first helical groove a. The second helical structure includes a second helical groove c and a second protrusion d. One of the second synchronization swing arm 320 and the first sliding component 330 is provided with the second helical groove c, and the other is provided with the second protrusion d. The second protrusion d engages with the second helical groove c and can move along the helical direction of the second helical groove c, so that the second synchronization swing arm 320 and the first sliding component 330 can move relative to each other along the helical direction of the second helical groove c. Optionally, both the first protrusion b and the second protrusion d can be helical protrusions or block protrusions.

[0043] During the switching between the folded and unfolded states of the electronic device, one of the first synchronous swing arm 310 and the second synchronous swing arm 320 drives the first sliding member 330 to slide, and the first sliding member 330 drives the other to rotate. Optionally, when the first synchronous swing arm 310 rotates, it drives the first protrusion b to move along the spiral direction of the first spiral groove a, thereby driving the first sliding member 330 to move. Due to the cooperation between the second protrusion d and the second spiral groove c, when the first sliding member 330 moves, it drives the second protrusion d to move along the spiral direction of the second spiral groove c, thereby driving the second synchronous swing arm 320 to rotate.

[0044] By setting protrusions and opening spiral grooves, spiral transmission between the first synchronous swing arm 310 and the first sliding component 330 can be realized, as can spiral transmission between the second synchronous swing arm 320 and the first sliding component 330. There is no need to set up separate transmission components, and the first spiral structure and the second spiral structure are simple, which helps to simplify the structure of the hinge assembly 300.

[0045] In an optional embodiment, the first sliding member 330 may be disposed on the side of the first synchronous swing arm 310 facing away from the second synchronous swing arm 320, and the first sliding member 330 is at least partially located between the first synchronous swing arm 310 and the second synchronous swing arm 320. In another embodiment, the first sliding member 330 is disposed between the first synchronous swing arm 310 and the second synchronous swing arm 320, a first protrusion b is disposed on the side of the first sliding member 330 facing the first synchronous swing arm 310, and / or, a second protrusion d is disposed on the side of the first sliding member 330 facing the second synchronous swing arm 320. Using this embodiment, the structure can be made more compact, which is beneficial to improving transmission stability.

[0046] In an optional embodiment, one first spiral groove a and one first protrusion b are respectively provided, and one second spiral groove c and one second protrusion d are respectively provided; or, at least two first spiral grooves a and at least two first protrusions b are spaced apart in the sliding direction of the first sliding member 330, with the first spiral grooves a and the first protrusions b corresponding one-to-one, and at least two second spiral grooves c and at least two second protrusions d are spaced apart in the sliding direction of the second sliding member 360, with the second spiral grooves c and the second protrusions d corresponding one-to-one.

[0047] In one embodiment, at least two sets of cooperating first helical grooves a and first protrusions b are used to drive the first sliding component 330 to different positions when the first synchronous swing arm 310 rotates, or to drive the first synchronous swing arm 310 to different positions when the first sliding component 330 moves. This facilitates more stable movement of the first sliding component 330 and the first synchronous swing arm 310. Similarly, at least two sets of cooperating second helical grooves c and second protrusions d are used to drive the first sliding component 330 to different positions when the second synchronous swing arm 320 rotates, or to drive the second synchronous swing arm 320 to different positions when the first sliding component 330 moves. This facilitates more stable movement of the first sliding component 330 and the second synchronous swing arm 320, and improves transmission stability.

[0048] In another embodiment, reference Figures 6-8 As shown, the linkage synchronization mechanism includes a first sliding component 330, and a first helical structure including a first threaded sleeve 331 and a first stud 311. The first sliding component 330 is provided with the first threaded sleeve 331, and the first synchronization swing arm 310 is provided with the first stud 311. The first threaded sleeve 331 is sleeved on the outside of the first stud 311, and the first threaded sleeve 331 and the first stud 311 are threadedly engaged; and / or, the second helical structure includes a second threaded sleeve 332 and a second stud 321. The first sliding component 330 is provided with the second threaded sleeve 332, and the second synchronization swing arm 320 is provided with the second stud 321. The second threaded sleeve 332 is sleeved on the outside of the second stud 321, and the second threaded sleeve 332 and the second stud 321 are threadedly engaged. Optionally, the first sliding component 330 includes a first connecting portion 333, and the first threaded sleeve 331 and the second threaded sleeve 332 are connected through the first connecting portion 333. The first threaded sleeve 331, the first connecting portion 333, and the second threaded sleeve 332 can be an integral structure.

[0049] In this embodiment, the first threaded sleeve 331 and the first stud 311 achieve a helical engagement, increasing the contact area between the first synchronous swing arm 310 and the first sliding component 330 during transmission. At the same time, the second threaded sleeve 332 and the second stud 321 achieve a helical engagement, further increasing the contact area between the second synchronous swing arm 320 and the first sliding component 330 during transmission, which is beneficial for further improving transmission stability.

[0050] In an optional embodiment, refer to Figure 4 and Figure 7As shown, the hinge assembly 300 further includes a first rotating shaft 351 and a second rotating shaft 352. The linkage synchronization mechanism includes a first sliding component 330, which is slidably connected to the seat 340. The first rotating shaft 351 and the second rotating shaft 352 are arranged parallel to each other, and the sliding direction of the first sliding component 330 is parallel to the first rotating shaft 351. A first synchronous swing arm 310 is rotatably sleeved outside the first rotating shaft 351, and a second synchronous swing arm 320 is rotatably sleeved outside the second rotating shaft 352. The rotation axis of the first synchronous swing arm 310 is the axis of the first rotating shaft 351, and the rotation axis of the second synchronous swing arm 320 is the axis of the second rotating shaft 352. Optionally, both the first synchronous swing arm 310 and the second synchronous swing arm 320 include a cylindrical portion, which is sleeved outside the first rotating shaft 351 or the second rotating shaft 352. Optionally, one of the first sliding component 330 and the seat 340 may be provided with a sliding groove, and the other may be provided with a sliding protrusion. The sliding groove extends along the axial direction of the first rotating shaft 351, and the sliding protrusion extends into the sliding groove.

[0051] In this embodiment, the first rotating shaft 351 provides rotational support for the first synchronous swing arm 310, and the contact area between the first rotating shaft 351 and the first synchronous swing arm 310 is relatively large, which is beneficial to the stable rotation of the first synchronous swing arm 310; the second rotating shaft 352 provides rotational support for the second synchronous swing arm 320, and the contact area between the second rotating shaft 352 and the second synchronous swing arm 320 is relatively large, which is beneficial to the stable rotation of the second synchronous swing arm 320.

[0052] Of course, in other embodiments, one of the first synchronous swing arm 310 and the seat 340 may be provided with a first cylindrical groove, and the other may be provided with a first cylindrical protrusion. The first cylindrical protrusion extends into the first cylindrical groove, and the first cylindrical protrusion and the first cylindrical groove are rotatably engaged to realize the rotatable connection between the first synchronous swing arm 310 and the seat 340; one of the second synchronous swing arm 320 and the seat 340 may be provided with a second cylindrical groove, and the other may be provided with a second cylindrical protrusion. The second cylindrical protrusion extends into the second cylindrical groove, and the second cylindrical protrusion and the second cylindrical groove are rotatably engaged to realize the rotatable connection between the second synchronous swing arm 320 and the seat 340.

[0053] In the scheme of this application, such as Figure 2 and Figure 6As shown, the hinge assembly 300 further includes a second sliding member 360, which is slidable relative to the base 340. The second sliding member 360 includes a first sliding portion 361 and a second sliding portion 362 connected together. The hinge assembly 300 also includes a first elastic element 371 and a second elastic element 372. The first synchronous swing arm 310 cooperates with the first sliding portion 361. One end of the first elastic element 371 is connected to the base 340, and the other end of the first elastic element 371 is connected to the first sliding portion 361. When the first synchronous swing arm 310 rotates, it drives the second sliding member 360 to move, so that the first elastic element 371 undergoes elastic deformation. The second synchronous swing arm 320 cooperates with the second sliding portion 362. One end of the second elastic element 372 is connected to the base 340, and the other end of the second elastic element 372 is connected to the second sliding portion 362. When the second synchronous swing arm 320 rotates, it drives the second sliding member 360 to move, so that the second elastic element 372 undergoes elastic deformation. During the folding or unfolding of the electronic device, the first synchronous swing arm 310 and the second synchronous swing arm 320 rotate synchronously to drive the second sliding component 360 to move as a whole, and the first elastic element 371 and the second elastic element 372 undergo elastic deformation simultaneously. Optionally, the first elastic element 371 and the second elastic element 372 can be springs.

[0054] Thus, by utilizing the driving force generated during the rotation of the first synchronous swing arm 310 and the second synchronous swing arm 320, the second sliding component 360 is driven to move, thereby causing the first elastic element 371 and the second elastic element 372 to undergo elastic deformation. During the folding or unfolding of the electronic device, the first elastic element 371 and the second elastic element 372 will generate an elastic force, i.e., a damping force, to keep the electronic device at a preset angle, which is beneficial to improving the user experience.

[0055] Optionally, the second sliding component 360 may further include a second connecting portion 363, which is disposed between the first sliding portion 361 and the second sliding portion 362. The first sliding portion 361, the second connecting portion 363, and the second sliding portion 362 may be an integral structure.

[0056] In other embodiments, when the friction between the first synchronous swing arm 310 and the seat 340, and between the second synchronous swing arm 320 and the seat 340, is large, that is, during the rotation of the first synchronous swing arm 310 and the second synchronous swing arm 320, the first synchronous swing arm 310 and the second synchronous swing arm 320 can still remain at a preset position relative to the seat 340, so that the electronic device is kept at a preset angle. At this time, the hinge assembly 300 may not be provided with the second sliding member 360, the first elastic member 371 and the second elastic member 372.

[0057] In an optional embodiment, the first synchronous swing arm 310 is provided with a first driving wedge surface e, and the first sliding part 361 is provided with a second driving wedge surface f. The first driving wedge surface e and the second driving wedge surface f cooperate with each other. When the first synchronous swing arm 310 rotates, it drives the second sliding member 360 to move through the first driving wedge surface e and the second driving wedge surface f. And / or, the second synchronous swing arm 320 is provided with a third driving wedge surface g, and the second sliding part 362 is provided with a fourth driving wedge surface h. The third driving wedge surface g and the fourth driving wedge surface h cooperate with each other. When the second synchronous swing arm 320 rotates, it drives the second sliding member 360 to move through the third driving wedge surface g and the fourth driving wedge surface h. Optionally, one of the first driving wedge surface e and the second driving wedge surface f can be a first concave surface, and the other can be a first convex surface, with the first concave surface cooperating with the first convex surface. Similarly, one of the third driving wedge surface g and the fourth driving wedge surface h can be a second concave surface, and the other can be a second convex surface, with the second concave surface cooperating with the second convex surface.

[0058] In this embodiment, the first sliding component 330 can be driven to move when the first synchronous swing arm 310 rotates or the second synchronous swing arm 320 rotates by the cooperating driving wedge surface. Therefore, no other complex transmission mechanism needs to be set between the first synchronous swing arm 310 and the first sliding component 330, or between the second synchronous swing arm 320 and the first sliding component 330, which reduces the space occupied and makes the structure more compact.

[0059] In one optional embodiment, the first synchronous swing arm 310 is provided with a first driving wedge surface e, the first sliding part 361 is provided with a second driving wedge surface f, the second synchronous swing arm 320 is provided with a third driving wedge surface g, and the second sliding part 362 is provided with a fourth driving wedge surface h. In another embodiment, the first synchronous swing arm 310 is provided with at least two first driving wedge surfaces e in the direction surrounding its own rotation axis, and the first sliding part 361 is provided with at least two second driving wedge surfaces f in the direction surrounding the rotation axis of the first synchronous swing arm 310, with each first driving wedge surface e corresponding to each second driving wedge surface f; and / or, the second synchronous swing arm 320 is provided with at least two third driving wedge surfaces g in the direction surrounding its own rotation axis, and the second sliding part 362 is provided with at least two fourth driving wedge surfaces h in the direction surrounding the rotation axis of the second synchronous swing arm 320, with each third driving wedge surface g corresponding to each fourth driving wedge surface h. Optionally, the rotation axis of the first synchronous swing arm 310 is the axis of the first rotating shaft 351, and the rotation axis of the second synchronous swing arm 320 is the axis of the second rotating shaft 352.

[0060] In the latter embodiment, the use of at least two first driving wedge surfaces e and at least two second driving wedge surfaces f facilitates the stable driving of the first sliding component 330 by the first synchronous swing arm 310. Similarly, the use of at least two third driving wedge surfaces g and at least two fourth driving wedge surfaces h facilitates the stable driving of the second sliding component 360 by the second synchronous swing arm 320.

[0061] In an optional embodiment, the sliding direction of the second sliding member 360 is perpendicular to the first rotating shaft 351, or the sliding direction of the second sliding member 360 is parallel to the first rotating shaft 351. Compared with the previous embodiment, the second sliding member 360 does not occupy too much space in the direction perpendicular to the first rotating shaft 351, which helps to reduce the space occupied by the hinge assembly 300 and realize the miniaturization of electronic devices.

[0062] In one optional embodiment, the first synchronous swing arm 310, the first sliding part 361, and the first elastic member 371 are sequentially sleeved on the outside of the first rotating shaft 351, and the second synchronous swing arm 320, the second sliding part 362, and the second elastic member 372 are sequentially sleeved on the outside of the second rotating shaft 352. Thus, the first rotating shaft 351 and the second rotating shaft 352 not only support the first synchronous swing arm 310 and the second synchronous swing arm 320 respectively, but also guide the movement direction of the first sliding member 330, the deformation direction of the first elastic member 371, and the deformation direction of the second elastic member 372, ensuring that the first sliding member 330 moves accurately along the axial direction of the first rotating shaft 351, and that the first elastic member 371 and the second elastic member 372 undergo elastic deformation along the axial direction of the first rotating shaft 351. Of course, in other embodiments, the first sliding part 361 and the first elastic member 371 can be separately disposed from the first rotating shaft 351, and the second sliding part 362 and the second elastic member 372 can also be separately disposed from the second rotating shaft 352.

[0063] In one alternative embodiment, combined with Figure 2 and Figure 6 As shown, the hinge assembly 300 also includes a third elastic element 373, which is disposed between the base 340 and the first sliding member 330. The first elastic element 371 and the third elastic element 373 are respectively located on one side of the first sliding member 330. That is, the first elastic element 371, the second elastic element 372 and the third elastic element 373 are all located on one side of the first sliding member 330. During the folding or unfolding process of the electronic device, the first elastic element 371, the second elastic element 372 and the third elastic element 373 are all stretched or compressed.

[0064] In another embodiment, the first elastic element 371 and the third elastic element 373 are located on opposite sides of the first sliding member 330. During the sliding of the first sliding member 330 relative to the base 340, the third elastic element 373 undergoes elastic deformation. Optionally, during the folding or unfolding of the electronic device, the first sliding member 330 and the second sliding member 360 move in the same direction, and the first elastic element 371 and the third elastic element 373 are located on opposite sides of the first sliding member 330 along the axial direction of the first rotating shaft 351. Thus, during the folding or unfolding of the electronic device, the elastic force generated by the first elastic element 371 and the second elastic element 372 drives the second sliding member 360 to move in the opposite direction to the elastic force generated by the third elastic element 373 driving the first sliding member 330 to move, so that the first sliding member 330 is in a balanced state during movement, avoiding excessive unidirectional damping force that would hinder the continued relative rotation of the first synchronous swing arm 310 and the second synchronous swing arm 320.

[0065] In optional embodiments, such as Figure 4 and Figure 7 As shown, the first sliding member 330 is provided with a positioning post 334, and the third elastic member 373 is sleeved on the outside of the positioning post 334. Thus, the positioning post 334 guides the deformation direction of the third elastic member 373, which facilitates more accurate elastic deformation of the third elastic member 373 along the axial direction of the positioning post 334. Optionally, the extending direction of the positioning post 334 forms an angle with the sliding direction of the first sliding member 330, or the extending direction of the positioning post 334 is parallel to the sliding direction of the first sliding member 330. In the latter embodiment, the third elastic member 373 deforms along the extending direction of the positioning post 334, so the deformation direction of the third elastic member 373 is consistent with the sliding direction of the first sliding member 330, allowing the deformation force generated by the third elastic member 373 to accurately act on the first sliding member 330.

[0066] In an optional embodiment, combined with Figures 9-12As shown, the hinge assembly 300 also includes a first connector 381 and a second connector 382. The first connector 381 can be connected to the first device body 100 of the electronic device, and the second connector 382 can be connected to the second device body 200 of the electronic device. Thus, the first device body 100 drives the first synchronous swing arm 310 to rotate via the first connector 381, or the second device body 200 drives the second synchronous swing arm 320 to rotate via the second connector 382. Furthermore, the first synchronous swing arm 310 is slidably engaged with the first connector 381, and / or the second synchronous swing arm 320 is slidably engaged with the second connector 382. Optionally, the relative sliding direction between the first connector 381 and the first synchronous swing arm 310 can be perpendicular to the first rotating shaft 351, and the relative sliding direction between the second connector 382 and the second synchronous swing arm 320 can be perpendicular to the second rotating shaft 352. This increases the degrees of freedom of the first connector 381 and the second connector 382, ​​preventing the first connector 381 and the second connector 382 from being displaced relative to the corresponding pivot during the rotation of the first synchronous swing arm 310 and the second synchronous swing arm 320, thus avoiding jamming and ensuring that the electronic device can be folded and unfolded smoothly.

[0067] Optionally, one of the first connector 381 and the first synchronous swing arm 310 may be provided with a first slide groove, and the other may be provided with a first slide plate, the first slide plate being able to extend into the first slide groove and slide relative to the first slide groove; one of the second connector 382 and the second synchronous swing arm 320 may be provided with a second slide groove, and the other may be provided with a second slide plate, the second slide plate being able to extend into the second slide groove and slide relative to the second slide groove.

[0068] Of course, in other embodiments, the first device body 100 of the electronic device can be slidably connected to the first synchronous swing arm 310, and the second device body 200 of the electronic device can be slidably connected to the second synchronous swing arm 320.

[0069] In an optional embodiment, the hinge assembly 300 further includes a first virtual swing arm 391 and a second virtual swing arm 392. The first virtual swing arm 391 is rotatably connected to the base 340 and hinged to the first connector 381. The rotation axis of the first virtual swing arm 391 is parallel to the first rotating shaft 351. The second virtual swing arm 392 is rotatably connected to the base 340 and hinged to the second connector 382. The rotation axis of the second virtual swing arm 392 is parallel to the second rotating shaft 352. Both the first virtual swing arm 391 and the second virtual swing arm 392 are provided with arc-shaped protrusions. The cover is provided with arc-shaped grooves. The arc-shaped protrusions can extend into the arc-shaped grooves, and the arc-shaped protrusions and arc-shaped grooves are rotatably engaged. When the electronic device is in a folded state, a portion of the arc-shaped protrusions can extend out of the arc-shaped grooves. The arc-shaped protrusions of the first synchronous swing arm 310 and the arc-shaped protrusions of the second synchronous swing arm 320 are arranged opposite to each other.Figure 11 and Figure 2 As shown, the hinge assembly 300 has a teardrop-shaped structure at this time.

[0070] Optionally, the first synchronous swing arm 310 includes a third connecting portion for connecting the cylindrical portion and the first sliding plate, and the first virtual swing arm 391 is also provided with a first clearance opening for avoiding the third connecting portion; the second synchronous swing arm 320 includes a fourth connecting portion for connecting the cylindrical portion and the second sliding plate, and the second virtual swing arm 392 is also provided with a second clearance opening for avoiding the fourth connecting portion, so as to avoid the first virtual swing arm 391 from obstructing the first synchronous swing arm 310 and the second virtual swing arm 392 from obstructing the second synchronous swing arm 320, which is conducive to a compact structure.

[0071] In one alternative embodiment, such as Figure 9 As shown, the seat 340 may include a base 341 and a cover plate 342. The first rotating shaft 351 and the second rotating shaft 352 are disposed on the base 341. One end of the first elastic member 371, the second elastic member 372 and the third elastic member 373 all act on the base 341. The cover plate 342 is disposed between the first virtual swing arm 391 and the second virtual swing arm 392, and the cover plate 342 is opposite to the base 341. The first virtual swing arm 391, the second virtual swing arm 392 and the cover plate 342 can jointly cover the first synchronous swing arm 310, the second synchronous swing arm 320, the first sliding member 330, the second sliding member 360 and each elastic member, thereby protecting each component.

[0072] Based on the hinge assembly 300 disclosed in this application, embodiments of this application also disclose an electronic device, such as... Figure 1As shown, the electronic device includes a first device body 100, a second device body 200, and a hinge assembly 300 as described in the above embodiment. A first synchronous swing arm 310 is connected to the first device body 100, and a second synchronous swing arm 320 is connected to the second device body 200. Optionally, the hinge assembly 300 further includes a first connector 381 and a second connector 382. The first connector 381 is connected to the first device body 100 and is slidably engaged with the first synchronous swing arm 310. The second connector 382 is connected to the second device body 200 and is slidably engaged with the second synchronous swing arm 320. During the unfolding or folding of the electronic device, the hinge assembly 300 causes the first device body 100 and the second device body 200 to rotate relative to each other. The first device body 100 drives the first synchronous swing arm 310 to rotate, and the first synchronous swing arm 310 drives the second device body 200 to rotate synchronously through a first spiral structure and a linkage synchronization mechanism; alternatively, the second device body 200 drives the second synchronous swing arm 320 to rotate, and the second synchronous swing arm 320 drives the first device body 100 to rotate synchronously through a second spiral structure and a linkage synchronization mechanism. The structure provided by this solution can realize the synchronous rotation of the two side shells of the foldable electronic device and can save the internal space of the electronic device.

[0073] 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 assembly for rotationally connecting a first device main body (100) and a second device main body (200) of an electronic device, characterized by, The hinge assembly comprises a seat body (340), a first synchronous swing arm (310), a second synchronous swing arm (320) and a linkage synchronization mechanism, wherein: The first synchronous swing arm (310) and the second synchronous swing arm (320) are respectively rotationally connected with the seat body (340), the first synchronous swing arm (310) is connected with the linkage synchronization mechanism through a first screw structure, the second synchronous swing arm (320) is connected with the linkage synchronization mechanism through a second screw structure, and the first synchronous swing arm (310) and the second synchronous swing arm (320) can rotate relative to the linkage synchronization mechanism; In the process of switching the electronic device between the unfolded state and the folded state, the first synchronous swing arm (310) rotates and drives the linkage synchronization mechanism to move through the first screw structure, the linkage synchronization mechanism drives the second synchronous swing arm (320) to rotate through the second screw structure, or the second synchronous swing arm (320) rotates and drives the linkage synchronization mechanism to move through the second screw structure, and the linkage synchronization mechanism drives the first synchronous swing arm (310) to rotate through the first screw structure; The linkage synchronization mechanism comprises a first sliding component (330), the hinge assembly (300) further comprises a first elastic member (371), a second elastic member (372) and a third elastic member (373), along the direction of the rotation axis of the first synchronous swing arm (310), the first elastic member (371) and the second elastic member (372) are located on the first side of the first sliding component (330), and the third elastic member (373) is located on the second side of the first sliding component (330), the first elastic member (371) is elastically deformed when the first synchronous swing arm (310) rotates, and the second elastic member (372) is elastically deformed when the second synchronous swing arm (320) rotates; The third elastic member (373) is arranged between the seat body (340) and the first sliding component (330), and the third elastic member (373) is elastically deformed in the process that the first sliding component (330) slides relative to the seat body (340).

2. The hinge assembly of claim 1, wherein, The first screw structure comprises a first screw groove (a) and a first protrusion (b), one of the first synchronous swing arm (310) and the first sliding component (330) is provided with the first screw groove (a), and the other is provided with the first protrusion (b), and the first protrusion (b) cooperates with the first screw groove (a); the second screw structure comprises a second screw groove (c) and a second protrusion (d), one of the second synchronous swing arm (320) and the first sliding component (330) is provided with the second screw groove (c), and the other is provided with the second protrusion (d), and the second protrusion (d) cooperates with the second screw groove (c); In the process of switching between the folded state and the unfolded state of the electronic device, one of the first synchronous swing arm (310) and the second synchronous swing arm (320) drives the first sliding component (330) to slide, and the first sliding component (330) drives the other to rotate.

3. The hinge assembly of claim 2, wherein, The first sliding component (330) is arranged between the first synchronous swing arm (310) and the second synchronous swing arm (320), the first protrusion (b) is arranged on one side of the first sliding component (330) facing the first synchronous swing arm (310), and / or the second protrusion (d) is arranged on one side of the first sliding component (330) facing the second synchronous swing arm (320).

4. The hinge assembly of claim 3, wherein, The first spiral groove (a) and the first protrusion (b) are respectively arranged at least two in the sliding direction of the first sliding component (330), and the first spiral groove (a) and the first protrusion (b) correspond one by one. And / or, the second spiral groove (c) and the second protrusion (d) are respectively arranged at least two in the sliding direction of the first sliding component (330), and the second spiral groove (c) and the second protrusion (d) correspond one by one.

5. The hinge assembly of claim 1, wherein, The first spiral structure includes a first threaded sleeve (331) and a first threaded stud (311), the first sliding component (330) is provided with the first threaded sleeve (331), the first synchronous swing arm (310) is provided with the first threaded stud (311), the first threaded sleeve (331) is sleeved outside the first threaded stud (311), and the first threaded sleeve (331) is screwed with the first threaded stud (311); And / or, the second spiral structure includes a second threaded sleeve (332) and a second threaded stud (321), the first sliding component (330) is provided with the second threaded sleeve (332), the second synchronous swing arm (320) is provided with the second threaded stud (321), the second threaded sleeve (332) is sleeved outside the second threaded stud (321), and the second threaded sleeve (332) is screwed with the second threaded stud (321).

6. The hinge assembly of claim 1, wherein, The hinge assembly (300) further includes a first rotating shaft (351) and a second rotating shaft (352), the linkage synchronization mechanism includes a first sliding component (330), and the first sliding component (330) is in sliding connection with the seat body (340), wherein: The first rotating shaft (351) and the second rotating shaft (352) are both rotatably arranged in the seat body (340), the first rotating shaft (351) is parallel to the second rotating shaft (352), and the sliding direction of the first sliding component (330) is parallel to the first rotating shaft (351); The first synchronous swing arm (310) is rotatably sleeved outside the first rotating shaft (351), and the second synchronous swing arm (320) is rotatably sleeved outside the second rotating shaft (352).

7. The hinge assembly of claim 6, wherein, The hinge assembly (300) further comprises a second sliding component (360) which is slidable relative to the seat body (340), the second sliding component (360) comprising a first sliding part (361) and a second sliding part (362) connected together, wherein: The first synchronous swing arm (310) cooperates with the first sliding part (361), one end of the first elastic member (371) is connected to the seat body (340), the other end of the first elastic member (371) is connected to the first sliding part (361), the first synchronous swing arm (310) drives the second sliding component (360) to move when rotating, so that the first elastic member (371) is elastically deformed; The second synchronous swing arm (320) cooperates with the second sliding part (362), one end of the second elastic member (372) is connected to the seat body (340), the other end of the second elastic member (372) is connected to the second sliding part (362), the second synchronous swing arm (320) drives the second sliding component (360) to move when rotating, so that the second elastic member (372) is elastically deformed.

8. The hinge assembly of claim 7, wherein, The first synchronous swing arm (310) is provided with a first driving wedge surface (e), the first sliding part (361) is provided with a second driving wedge surface (f), the first driving wedge surface (e) cooperates with the second driving wedge surface (f), the first synchronous swing arm (310) drives the second sliding component (360) to move through the first driving wedge surface (e) and the second driving wedge surface (f) when rotating; And / or, the second synchronous swing arm (320) is provided with a third driving wedge surface (g), the second sliding part (362) is provided with a fourth driving wedge surface (h), the third driving wedge surface (g) cooperates with the fourth driving wedge surface (h), the second synchronous swing arm (320) drives the second sliding component (360) to move through the third driving wedge surface (g) and the fourth driving wedge surface (h) when rotating.

9. The hinge assembly of claim 8, wherein, The first synchronous swing arm (310) is provided with at least two first driving wedge surfaces (e) in the direction around the rotation axis thereof, the first sliding part (361) is provided with at least two second driving wedge surfaces (f) in the direction around the rotation axis of the first synchronous swing arm (310), each first driving wedge surface (e) cooperates with each second driving wedge surface (f) one by one; And / or, the second synchronous swing arm (320) is provided with at least two third driving wedge surfaces (g) in the direction around the rotation axis thereof, the second sliding part (362) is provided with at least two fourth driving wedge surfaces (h) in the direction around the rotation axis of the second synchronous swing arm (320), each third driving wedge surface (g) cooperates with each fourth driving wedge surface (h) one by one.

10. The hinge assembly of claim 7, wherein, The sliding direction of the second sliding component (360) is parallel to the first rotation shaft (351).

11. The hinge assembly of claim 10, wherein, The first synchronous swing arm (310), the first sliding part (361) and the first elastic member (371) are sequentially sleeved outside the first rotating shaft (351), and the second synchronous swing arm (320), the second sliding part (362) and the second elastic member (372) are sequentially sleeved outside the second rotating shaft (352).

12. The hinge assembly of claim 1, wherein, The first sliding part (330) is provided with a positioning column (334), the third elastic member (373) is sleeved outside the positioning column (334), and the extension direction of the positioning column (334) is parallel to the sliding direction of the first sliding part (330).

13. The hinge assembly of claim 1, wherein, The hinge assembly (300) further comprises a first connecting piece (381) and a second connecting piece (382), the first synchronous swing arm (310) is in sliding fit with the first connecting piece (381), and / or the second synchronous swing arm (320) is in sliding fit with the second connecting piece (382).

14. An electronic device, comprising: The hinge assembly (300) comprises a first device body (100), a second device body (200) and any one of claims 1-13, the first synchronous swing arm (310) is connected with the first device body (100), and the second synchronous swing arm (320) is connected with the second device body (200).

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