WO2024088155A1 - Hinge assembly and electronic device - Google Patents

Abstract

A hinge assembly (300), relating to the technical field of communications. The hinge assembly (300) is used for rotatably connecting a first device body (100) and a second device body (200) of an electronic device; the hinge assembly (300) comprises a base (340), a first synchronous swing arm (310) and a second synchronous swing arm (320) that are rotatably connected to the base (340), and a linkage synchronization mechanism; the first synchronous swing arm (310) is connected to the linkage synchronization mechanism by means of a first helical structure; the second synchronous swing arm (320) is connected to the linkage synchronous mechanism by means of a second helical structure; both the first synchronous swing arm (310) and the second synchronous swing arm (320) can rotate relative to the linkage synchronous mechanism. In the process that the electronic device is switched between an unfolded state and a folded state, the first synchronous swing arm (310) rotates and then drives the linkage synchronous mechanism to move by means of the first helical structure, and the linkage synchronous mechanism drives the second synchronous swing arm (320) to rotate by means of the second helical structure; or, the second synchronous swing arm (320) rotates and then drives the linkage synchronous mechanism to move by means of the second helical structure, and the linkage synchronous mechanism drives the first synchronous swing arm (310) to rotate by means of the first helical structure. Thus, the problem in the related art that the stability of folding electronic devices is poor can be solved. The present invention further relates to an electronic device.

Description

Hinge assembly and electronic device

cross reference

The present invention claims priority to a Chinese patent application filed with the Chinese Patent Office on October 26, 2022, with application number 202211317732.4 and invention name “Hinge Assembly and Electronic Device”. The entire contents of the application are incorporated by reference into the present invention.

Technical Field

The present application belongs to the field of communication technology, and specifically relates to a hinge assembly and an electronic device.

Background technique

With the development of science and technology, people are becoming more and more dependent on electronic devices. In pursuit of a better visual experience, the display screens of electronic devices are getting larger and larger, which leads to a significant reduction in the portability and comfort of electronic devices.

In order not to affect the portability and comfort of electronic devices, the application scope of foldable electronic devices is becoming wider and wider. In the related art, foldable electronic devices rely on the meshing of gear sets to achieve synchronous folding or synchronous unfolding. However, since adjacent gears are meshed through teeth, and there is a tooth gap between the meshing teeth, that is, there is a certain matching tolerance, then the foldable electronic device is prone to shaking during the folding or unfolding process, resulting in poor transmission stability. Therefore, the stability of the foldable electronic device is poor.

Summary of the invention

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 foldable electronic devices in the related art.

In a first aspect, an embodiment of the present application provides a hinge assembly for rotatably connecting a first device body and a second device body of an electronic device, wherein the hinge assembly comprises a seat, a first synchronous swing arm, a second synchronous swing arm and a linkage synchronization mechanism, wherein the first synchronous swing arm and the second synchronous swing arm are respectively connected to The seat body is rotatably connected, the first synchronous swing arm is connected to the linkage synchronization mechanism through a first spiral structure, the second synchronous swing arm is connected to the linkage synchronization mechanism through a second spiral structure, and the first synchronous swing arm and the second synchronous swing arm can both rotate relative to the linkage synchronization mechanism;

During the switching of the electronic device between the folded state and the unfolded state, the first synchronous swing arm rotates and drives the linkage synchronization mechanism to move through the first spiral structure, and 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.

In a second aspect, an embodiment of the present application further provides an electronic device, comprising the above-mentioned hinge assembly.

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

In this way, the tooth meshing mode of the gear set is avoided, and the first synchronous swing arm is connected to the linkage synchronization mechanism through the first spiral structure. Similarly, the second synchronous swing arm is connected to the linkage synchronization mechanism through the second spiral structure. That is, the first synchronous swing arm and the linkage synchronization mechanism, and the linkage synchronization mechanism and the second synchronous swing arm are closely matched, thereby improving the transmission stability.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of an electronic device in a folded state disclosed in an embodiment of the present application;

FIG2 is a schematic structural diagram of a hinge assembly disclosed in an embodiment of the present application;

FIG3 is a schematic structural diagram of a hinge assembly disclosed in an embodiment of the present application from another perspective;

FIG4 is an exploded view of a hinge assembly disclosed in an embodiment of the present application;

FIG. 5 is a diagram of a first synchronous swing arm, a second synchronous swing arm and a first sliding arm disclosed in an embodiment of the present application. Exploded view of components;

FIG6 is a schematic structural diagram of a hinge assembly disclosed in another embodiment of the present application;

FIG7 is an exploded view of a hinge assembly disclosed in another embodiment of the present application;

FIG8 is an exploded view of a first synchronous swing arm, a second synchronous swing arm and a first sliding component disclosed in another embodiment of the present application;

FIG9 is a schematic structural diagram of a hinge assembly when the electronic device is in an unfolded state according to an embodiment of the present application;

FIG10 is a schematic structural diagram of a hinge assembly from another perspective when the electronic device is in an unfolded state according to an embodiment of the present application;

FIG11 is a schematic structural diagram of a hinge assembly when the electronic device is in a folded state according to an embodiment of the present application;

FIG. 12 is a schematic structural diagram of the hinge assembly from another perspective when the electronic device is in a folded state according to an embodiment of the present application.

Description of reference numerals:

100-first device body,

200-second device body,

300-Hinge assembly,

310-first synchronous swing arm, a-first spiral groove, 311-first stud, e-first driving wedge surface,

320-second synchronous swing arm, c-second spiral groove, 321-second stud, g-third driving wedge surface,

330-first sliding member, b-first protrusion, d-second protrusion, 331-first threaded sleeve, 332-second threaded sleeve, 333-first connecting portion, 334-positioning column,

340-seat body, 341-base, 342-cover plate,

351-first rotating shaft, 352-second rotating shaft,

360-second sliding member, 361-first sliding portion, f-second driving wedge surface, 362-second sliding portion, h-fourth driving wedge surface, 363-second connecting portion,

371-first elastic member, 372-second elastic member, 373-third elastic member,

381-first connecting piece, 382-second connecting piece,

391 - first virtual swing arm, 392 - second virtual swing arm.

Detailed ways

The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and/or" in the specification and claims represents at least one of the connected objects, and the character "/" generally indicates that the objects associated with each other are in an "or" relationship.

The electronic device provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

Please refer to Figures 1 to 12. The hinge assembly 300 disclosed in the embodiment of the present application is used to rotatably connect the first device body 100 and the second device body 200 of the 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. Among them, the base 340 serves as the installation base of the first synchronous swing arm 310, the second synchronous swing arm 320, and the linkage synchronization mechanism. The first synchronous swing arm 310 and the second synchronous swing arm 320 are both rotatably connected to the base 340, and 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.

The first synchronous swing arm 310 is connected to the linkage synchronization mechanism through a first spiral structure, and the second synchronous swing arm 320 is connected to the linkage synchronization mechanism through a second spiral structure. The step swing arm 320 can rotate relative to the linkage synchronization mechanism. When the electronic device switches between the unfolded state and the folded state, the first synchronization swing arm 310 rotates and drives the linkage synchronization mechanism to move through the first spiral structure, and the linkage synchronization mechanism drives the second synchronization swing arm 320 to rotate through the second spiral structure; or the second synchronization swing arm 320 rotates and drives the linkage synchronization mechanism to move through the second spiral structure, and the linkage synchronization mechanism drives the first synchronization swing arm 310 to rotate through the first spiral structure.

In the embodiment of the present application, when an external force acts on the first synchronous swing arm 310, the first synchronous swing arm 310 rotates, and drives the linkage synchronization mechanism to move through the first spiral structure. When the linkage synchronization mechanism moves, the second synchronous swing arm 320 can be driven to rotate through the second spiral structure, so that the first synchronous swing arm 310 and the second synchronous swing arm 320 can rotate synchronously. Conversely, when an external force acts on the second synchronous swing arm 320, the same principle applies. When an external force acts on the second synchronous swing arm 320, the second synchronous swing arm 320 rotates, and drives the linkage synchronization mechanism to move through the second spiral structure. When the linkage synchronization mechanism moves, the first synchronous swing arm 310 can be driven to rotate through the first spiral structure, so that the first synchronous swing arm 310 and the second synchronous swing arm 320 can rotate synchronously. Therefore, no matter whether the external force acts on the first synchronous swing arm 310 or the second synchronous swing arm 320, the first synchronous swing arm 310 and the second synchronous swing arm 320 can rotate synchronously, thereby realizing the synchronous rotation of the first device body 100 and the second device body 200 of the electronic device.

In this way, the solution provided in the present application avoids the tooth meshing mode of the gear set. The first synchronous swing arm 310 is connected to the linkage synchronization mechanism through a first spiral structure. Similarly, the second synchronous swing arm 320 is connected to the linkage synchronization mechanism through a second spiral 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, thereby improving the transmission stability.

In an optional embodiment, as shown in combination with FIG. 2 , FIG. 4 and FIG. 5 , the linkage synchronization mechanism includes a first sliding component 330, the first spiral structure includes a first spiral groove a and a first protrusion b, one of the first synchronization swing arm 310 and the first sliding component 330 is provided with a first spiral groove a, and the other is provided with a first protrusion b, the first protrusion b cooperates with the first spiral groove a, and the first protrusion b can move along the spiral direction of the first spiral groove a, so that the first synchronization swing arm 310 and the first sliding component 330 can move relative to each other along the spiral direction of the first spiral groove a. The second spiral structure includes a second spiral groove c and a second protrusion d, one of the second synchronization swing arm 320 and the first sliding component 330 is provided with a second spiral groove c, and the other A second protrusion d is provided, and the second protrusion d cooperates with the second spiral groove c, and the second protrusion d can move along the spiral direction of the second spiral groove c, so that the second synchronous swing arm 320 and the first sliding component 330 can move relatively along the spiral direction of the second spiral groove c. Optionally, the first protrusion b and the second protrusion d can both be spiral protrusions or block protrusions.

During the switching of the electronic device between the folded state and the unfolded state, 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. 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 component 330 to move. Due to the matching relationship between the second protrusion d and the second spiral groove c, when the first sliding component 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.

By setting a protrusion and opening a spiral groove, spiral transmission between the first synchronous swing arm 310 and the first sliding component 330 can be realized, and spiral transmission between the second synchronous swing arm 320 and the first sliding component 330 can also be realized without setting a separate transmission component. The first spiral structure and the second spiral structure are simple, which is conducive to simplifying the structure of the hinge assembly 300.

In an optional embodiment, the first sliding component 330 may be disposed on a side of the first synchronous swing arm 310 facing away from the second synchronous swing arm 320, and the first sliding component 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 component 330 is disposed between the first synchronous swing arm 310 and the second synchronous swing arm 320, the first protrusion b is disposed on a side of the first sliding component 330 facing the first synchronous swing arm 310, and/or the second protrusion d is disposed on a side of the first sliding component 330 facing the second synchronous swing arm 320. By adopting this embodiment, the structure can be made more compact, which is conducive to improving the transmission stability.

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 component 330, and the first spiral grooves a and the first protrusions b correspond 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 component 360, and the second spiral grooves c and the second protrusions d correspond one to one.

In one embodiment, at least two sets of matching first spiral grooves a and first protrusions b are used so that when the first synchronous swing arm 310 rotates, the first sliding component 330 is driven to move to different positions, or when the first sliding component 330 moves, the first synchronous swing arm 310 is driven to move to different positions, which is beneficial for the first sliding component 330 and the first synchronous swing arm 310 to move more stably; similarly, at least two sets of matching second spiral grooves c and second protrusions d are used so that when the second synchronous swing arm 320 rotates, the first sliding component 330 is driven to move to different positions, or when the first sliding component 330 moves, the second synchronous swing arm 320 is driven to move to different positions, which is beneficial for the first sliding component 330 and the second synchronous swing arm 320 to move more stably, thereby improving the transmission stability.

In another embodiment, referring to Figures 6-8, the linkage synchronization mechanism includes a first sliding component 330, the first spiral structure includes a first threaded sleeve 331 and a first stud 311, the first sliding component 330 is provided with a first threaded sleeve 331, the first synchronous swing arm 310 is provided with a first stud 311, the first threaded sleeve 331 is sleeved on the outside of the first stud 311, and the first threaded sleeve 331 is threadedly matched with the first stud 311; and/or, the second spiral structure includes a second threaded sleeve 332 and a second stud 321, the first sliding component 330 is provided with a second threaded sleeve 332, the second synchronous swing arm 320 is provided with a second stud 321, the second threaded sleeve 332 is sleeved on the outside of the second stud 321, and the second threaded sleeve 332 is threadedly matched with the second stud 321. 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 via the first connecting portion 333 . The first threaded sleeve 331 , the first connecting portion 333 and the second threaded sleeve 332 may be an integrated structure.

By adopting this embodiment, a spiral fit is achieved by the first threaded sleeve 331 and the first stud 311, and the contact area between the first synchronous swing arm 310 and the first sliding component 330 during the transmission process is increased. At the same time, a spiral fit is achieved by the second threaded sleeve 332 and the second stud 321, and the contact area between the second synchronous swing arm 320 and the first sliding component 330 during the transmission process is also increased, which is beneficial to further improve the transmission stability.

In an optional embodiment, referring to FIG. 4 and FIG. 7 , the hinge assembly 300 further includes a first rotating shaft 351 and a second rotating shaft 352, and the linkage synchronization mechanism includes a first sliding component 330, and the first sliding component 330 is slidably connected to the seat body 340. The first rotating shaft 351 and the second rotating shaft 352 are arranged in parallel. 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 on the outside of the first rotating shaft 351, and the second synchronous swing arm 320 is rotatably sleeved on the outside of 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, the first synchronous swing arm 310 and the second synchronous swing arm 320 both include a cylindrical portion, and the cylindrical portion is sleeved on the outside of the first rotating shaft 351 or the outside of the second rotating shaft 352. Optionally, one of the first sliding component 330 and the seat body 340 can be provided with a sliding groove, and the other can 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.

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 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 large, which is beneficial to the stable rotation of the second synchronous swing arm 320.

Of course, in other embodiments, one of the first synchronous swing arm 310 and the seat body 340 can be provided with a first cylindrical groove, and the other can be provided with a first cylindrical protrusion, the first cylindrical protrusion extends into the first cylindrical groove, and the first cylindrical protrusion rotates with the first cylindrical groove to achieve the rotational connection between the first synchronous swing arm 310 and the seat body 340; one of the second synchronous swing arm 320 and the seat body 340 can be provided with a second cylindrical groove, and the other can be provided with a second cylindrical protrusion, the second cylindrical protrusion extends into the second cylindrical groove, and the second cylindrical protrusion rotates with the second cylindrical groove to achieve the rotational connection between the second synchronous swing arm 320 and the seat body 340.

In the solution of the present application, as shown in Figures 2 and 6, the hinge assembly 300 also includes a second sliding component 360, which can slide relative to the base 340, and the second sliding component 360 includes a first sliding portion 361 and a second sliding portion 362 that are connected to each other. The hinge assembly 300 also includes a first elastic member 371 and a second elastic member 372, wherein the first synchronous swing arm 310 cooperates with the first sliding portion 361, one end of the first elastic member 371 is connected to the base 340, and the other end of the first elastic member 371 is connected to the first sliding portion 361, and when the first synchronous swing arm 310 rotates, the second sliding component 360 is driven to move so that the first elastic member 371 undergoes elastic deformation; the second synchronous swing arm 320 cooperates with the second sliding portion 362, one end of the second elastic member 372 is connected to the base 340, and the other end of the second elastic member 372 is connected to the base 340 Connected to the second sliding part 362, the second synchronous swing arm 320 drives the second sliding part 360 to move when rotating, so that the second elastic member 372 undergoes elastic deformation. During the folding or unfolding process of the electronic device, the first synchronous swing arm 310 and the second synchronous swing arm 320 rotate synchronously to drive the second sliding part 360 to move as a whole, and the first elastic member 371 and the second elastic member 372 undergo elastic deformation at the same time. Optionally, the first elastic member 371 and the second elastic member 372 can be springs.

In this way, by utilizing the driving force 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 and then the first elastic member 371 and the second elastic member 372 are driven to undergo elastic deformation. Then, during the folding or unfolding of the electronic device, the first elastic member 371 and the second elastic member 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.

Optionally, the second sliding component 360 may further include a second connecting portion 363 , and the second connecting portion 363 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 integrated structure.

In other embodiments, when the friction between the first synchronous swing arm 310 and the base body 340 and between the second synchronous swing arm 320 and the base body 340 is relatively 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 stay at a preset position relative to the base body 340 to keep the electronic device at a preset angle. At this time, the hinge assembly 300 may not be provided with the second sliding component 360, the first elastic component 371 and the second elastic component 372.

In an optional embodiment, the first synchronous swing arm 310 is provided with a first driving wedge surface e, the first sliding portion 361 is provided with a second driving wedge surface f, the first driving wedge surface e cooperates with the second driving wedge surface f, and when the first synchronous swing arm 310 rotates, the first driving wedge surface e and the second driving wedge surface f drive the second sliding component 360 to move; and/or, the second synchronous swing arm 320 is provided with a third driving wedge surface g, the second sliding portion 362 is provided with a fourth driving wedge surface h, the third driving wedge surface g cooperates with the fourth driving wedge surface h, and when the second synchronous swing arm 320 rotates, the second sliding component 360 is driven 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, and the first concave surface cooperates with the first convex surface; similarly, the third driving wedge surface g One of the surface g and the fourth driving wedge surface h may be a second concave surface, and the other may be a second convex surface, and the second concave surface matches the second convex surface.

By adopting this embodiment, the first sliding component 330 can be driven to move when the first synchronous swing arm 310 rotates or when the second synchronous swing arm 320 rotates through the matching driving wedge surface. Therefore, there is no need to set other complex transmission mechanisms between the first synchronous swing arm 310 and the first sliding component 330, and between the second synchronous swing arm 320 and the first sliding component 330, thereby reducing the occupied space and making the structure more compact.

In an optional embodiment, the first synchronous swing arm 310 is provided with a first driving wedge surface e, the first sliding portion 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 portion 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 around its own rotation axis, the first sliding portion 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, and each first driving wedge surface e is matched with each second driving wedge surface f in a one-to-one correspondence; and/or, the second synchronous swing arm 320 is provided with at least two third driving wedge surfaces g in the direction around its own rotation axis, the second sliding portion 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, and each third driving wedge surface g is matched with each fourth driving wedge surface h in a one-to-one correspondence. 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 .

In the latter embodiment, utilizing at least two first driving wedge surfaces e and at least two second driving wedge surfaces f is beneficial for the first synchronous swing arm 310 to stably drive the first sliding component 330 to move. Similarly, utilizing at least two third driving wedge surfaces g and at least two fourth driving wedge surfaces h is beneficial for the second synchronous swing arm 320 to stably drive the second sliding component 360 to move.

In an optional embodiment, the sliding direction of the second sliding component 360 is perpendicular to the first rotating shaft 351, or the sliding direction of the second sliding component 360 is parallel to the first rotating shaft 351. Compared with the previous embodiment, the second sliding component 360 does not occupy too much space in the direction perpendicular to the first rotating shaft 351, which is conducive to reducing the occupied space of the hinge assembly 300 and realizing the miniaturization of the electronic device.

In an 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. In this way, 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 moving direction of the first sliding part 330, the deformation direction of the first elastic member 371 and the deformation direction of the second elastic member 372, so as to ensure that the first sliding part 330 accurately moves along the axial direction of the first rotating shaft 351, and the first elastic member 371 and the second elastic member 372 are elastically deformed 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 separated from the first rotating shaft 351, and the second sliding part 362 and the second elastic member 372 can also be separated from the second rotating shaft 352.

In an optional embodiment, in combination with Figures 2 and 6, the hinge assembly 300 also includes a third elastic member 373, and the third elastic member 373 is arranged between the base body 340 and the first sliding member 330, and the first elastic member 371 and the third elastic member 373 are respectively located on one side of the first sliding member 330, that is, the first elastic member 371, the second elastic member 372 and the third elastic member 373 are all located on one side of the first sliding member 330, and when the electronic device is folded or unfolded, the first elastic member 371, the second elastic member 372 and the third elastic member 373 are all stretched or compressed.

In another embodiment, the first elastic member 371 and the third elastic member 373 are respectively located on opposite sides of the first sliding member 330, and the third elastic member 373 is elastically deformed during the sliding of the first sliding member 330 relative to the seat body 340. 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 member 371 and the third elastic member 373 are respectively located on opposite sides of the first sliding member 330 along the axial direction of the first rotating shaft 351. In this way, during the folding or unfolding of the electronic device, the elastic force generated by the first elastic member 371 and the second elastic member 372 drives the second sliding member 360 to move in a direction opposite to the direction in which the elastic force generated by the third elastic member 373 drives the first sliding member 330 to move, so that the first sliding member 330 is in a balanced state during the movement, and the first synchronous swing arm 310 and the second synchronous swing arm 320 are prevented from continuing to rotate relative to each other due to excessive unidirectional damping force.

In an optional embodiment, as shown in FIG. 4 and FIG. 7 , the first sliding component 330 is provided with a positioning column 334, and the third elastic member 373 is sleeved on the outside of the positioning column 334. In this way, the positioning column 334 is used to guide the deformation direction of the third elastic member 373, which is conducive to the third elastic member 373 being elastically deformed more accurately along the axial direction of the positioning column 334. Optionally, the extension direction of the positioning column 334 and the sliding direction of the first sliding component 330 have an angle, or the extension direction of the positioning column 334 is parallel to the sliding direction of the first sliding component 330. In the latter embodiment, the third elastic member 373 is deformed along the extension direction of the positioning column 334, so the deformation direction of the third elastic member 373 is consistent with the sliding direction of the first sliding component 330, so that the deformation force generated by the third elastic member 373 can accurately act on the first sliding component 330.

In an optional embodiment, as shown in FIG. 9 to FIG. 12 , the hinge assembly 300 further includes a first connecting member 381 and a second connecting member 382, wherein the first connecting member 381 can be connected to the first device body 100 of the electronic device, and the second connecting member 382 can be connected to the second device body 200 of the electronic device. In this way, the first device body 100 drives the first synchronous swing arm 310 to rotate through the first connecting member 381, or the second device body 200 drives the second synchronous swing arm 320 to rotate through the second connecting member 382. Moreover, the first synchronous swing arm 310 is slidably matched with the first connecting member 381, and/or the second synchronous swing arm 320 is slidably matched with the second connecting member 382. Optionally, the relative sliding direction between the first connecting member 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 connecting member 382 and the second synchronous swing arm 320 can be perpendicular to the second rotating shaft 352. In this way, the degrees of freedom of the first connecting member 381 and the second connecting member 382 are increased, and the first connecting member 381 and the second connecting member 382 are prevented from being displaced relative to the corresponding rotating shafts during the rotation of the first synchronous swing arm 310 and the second synchronous swing arm 320, thereby ensuring that the electronic device can be folded and unfolded smoothly.

Optionally, one of the first connecting member 381 and the first synchronous swing arm 310 can be provided with a first sliding groove, and the other can be provided with a first slide plate, and the first slide plate can be extended into the first sliding groove and slide relative to the first sliding groove; one of the second connecting member 382 and the second synchronous swing arm 320 can be provided with a second sliding groove, and the other can be provided with a second slide plate, and the second slide plate can be extended into the second sliding groove and slide relative to the second sliding groove.

Of course, in other embodiments, the first device body 100 of the electronic device can be synchronized with the first The swing arm 310 is slidably connected, and the second device body 200 of the electronic device can be slidably connected to the second synchronous swing arm 320 .

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 body 340, and the first virtual swing arm 391 is hinged to the first connecting member 381, and 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 body 340, and the second virtual swing arm 392 is hinged to the second connecting member 382, and the rotation axis of the second virtual swing arm 392 is parallel to the first rotating shaft 351. The second rotating shaft 352 is arranged, and the first virtual swing arm 391 and the second virtual swing arm 392 are both provided with an arc-shaped protrusion, and the cover body is provided with an arc-shaped groove, the arc-shaped protrusion can be extended into the arc-shaped groove, and the arc-shaped protrusion and the arc-shaped groove are rotatably matched. When the electronic device is in a folded state, a part of the arc-shaped protrusion can extend out of the arc-shaped groove, and the arc-shaped protrusion of the first synchronous swing arm 310 and the arc-shaped protrusion of the second synchronous swing arm 320 are arranged back to back, as shown in Figures 11 and 2. At this time, the hinge assembly 300 has a water drop-shaped structure.

Optionally, the first synchronous swing arm 310 includes a third connecting portion for connecting the cylindrical portion and the first slide plate, and the first virtual swing arm 391 is also provided with a first avoidance opening for avoiding the third connecting portion; the second synchronous swing arm 320 includes a fourth connecting portion connecting the cylindrical portion and the second slide plate, and the second virtual swing arm 392 is also provided with a second avoidance opening for avoiding the fourth connecting portion, thereby avoiding the first virtual swing arm 391 from obstructing the first synchronous swing arm 310 and avoiding the second virtual swing arm 392 from obstructing the second synchronous swing arm 320, which is conducive to a compact structure.

In an optional embodiment, as shown in Figure 9, the seat body 340 may include a base 341 and a cover 342, the first rotating shaft 351 and the second rotating shaft 352 are arranged 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 342 is arranged between the first virtual swing arm 391 and the second virtual swing arm 392, and the cover 342 is opposite to the base 341, the first virtual swing arm 391, the second virtual swing arm 392 and the cover 342 can jointly cover the first synchronous swing arm 310, the second synchronous swing arm 320, the first sliding component 330, the second sliding component 360 and each elastic component, so as to protect each component.

Based on the hinge assembly 300 disclosed in the present application, the present application embodiment further discloses an electronic device, As shown in FIG1 , the electronic device includes a first device body 100, a second device body 200, and the hinge assembly 300 in the above embodiment, the first synchronous swing arm 310 is connected to the first device body 100, and the second synchronous swing arm 320 is connected to the second device body 200. Optionally, the hinge assembly 300 further includes a first connecting member 381 and a second connecting member 382, the first connecting member 381 is connected to the first device body 100, and the first connecting member 381 and the first synchronous swing arm 310 are slidably matched, the second connecting member 382 is connected to the second device body 200, and the second connecting member 382 and the second synchronous swing arm 320 are slidably matched. In the process of unfolding or folding the electronic device, the hinge assembly 300 drives 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 the first spiral structure and the linkage synchronization mechanism; or, 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 the second spiral structure and the 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.

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

Claims (15)

1. A hinge assembly is used for rotationally connecting a first device body (100) and a second device body (200) of an electronic device, the hinge assembly comprising 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 rotatably connected to the seat body (340); the first synchronous swing arm (310) is connected to the linkage synchronization mechanism via a first spiral structure; the second synchronous swing arm (320) is connected to the linkage synchronization mechanism via a second spiral structure; and both the first synchronous swing arm (310) and the second synchronous swing arm (320) can rotate relative to the linkage synchronization mechanism;

   During the switching of 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 via the first spiral structure, and the linkage synchronization mechanism drives the second synchronous swing arm (320) to rotate via the second spiral structure; or, the second synchronous swing arm (320) rotates and drives the linkage synchronization mechanism to move via the second spiral structure, and the linkage synchronization mechanism drives the first synchronous swing arm (310) to rotate via the first spiral structure.
2. The hinge assembly according to claim 1, wherein the linkage synchronization mechanism includes a first sliding component (330), the first spiral structure includes a first spiral 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 spiral groove (a), and the other is provided with the first protrusion (b), and the first protrusion (b) cooperates with the first spiral groove (a); the second spiral structure includes a second spiral 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 spiral groove (c), and the other is provided with the second protrusion (d), and the second protrusion (d) cooperates with the second spiral groove (c);

   When the electronic device switches between a folded state and an unfolded state, 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 according to 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 the side of the first sliding component (330) facing the first synchronous swing arm (310), and/or the second protrusion (d) is arranged on the side of the first sliding component (330) facing the second synchronous swing arm (320).
4. The hinge assembly according to claim 3, wherein at least two of the first spiral grooves (a) and the first protrusions (b) are respectively arranged at intervals in the sliding direction of the first sliding member (330), and the first spiral grooves (a) and the first protrusions (b) correspond one to one;

   And/or, at least two of the second spiral grooves (c) and the second protrusions (d) are respectively arranged at intervals in the sliding direction of the first sliding component (330), and the second spiral grooves (c) and the second protrusions (d) correspond one to one.
5. The hinge assembly according to claim 1, wherein the linkage synchronization mechanism comprises a first sliding component (330),

   The first spiral structure comprises a first threaded sleeve (331) and a first 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 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 matched;

   And/or, the second spiral 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), the second synchronous 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) is threadedly matched with the second stud (321).
6. The hinge assembly according to claim 1, wherein the hinge assembly (300) further comprises a first rotating shaft (351) and a second rotating shaft (352), the linkage synchronization mechanism comprises a first sliding component (330), the first sliding component (330) is slidably connected to the seat body (340), wherein:

   The first rotating shaft (351) and the second rotating shaft (352) are both rotatably disposed on the base body (340), the first rotating shaft (351) is parallel to the second rotating shaft (352), and the first The sliding direction of the sliding component (330) is parallel to the first rotating shaft (351);

   The first synchronous swing arm (310) is rotatably sleeved on the outside of the first rotating shaft (351), and the second synchronous swing arm (320) is rotatably sleeved on the outside of the second rotating shaft (352).
7. The hinge assembly according to claim 6, wherein the hinge assembly (300) further comprises a second sliding component (360), the second sliding component (360) being slidable relative to the base (340), the second sliding component (360) comprising a first sliding portion (361) and a second sliding portion (362) connected to each other, the hinge assembly (300) further comprises a first elastic member (371) and a second elastic member (372), 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), and the other end of the first elastic member (371) is connected to the first sliding part (361), and when the first synchronous swing arm (310) rotates, it drives the second sliding part (360) to move, so that the first elastic member (371) undergoes elastic deformation;

   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), and the other end of the second elastic member (372) is connected to the second sliding part (362). When the second synchronous swing arm (320) rotates, it drives the second sliding part (360) to move, so that the second elastic member (372) undergoes elastic deformation.
8. The hinge assembly according to 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), and when the first synchronous swing arm (310) rotates, the second sliding part (360) is driven 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), 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), and when the second synchronous swing arm (320) rotates, the second sliding part (360) is driven to move through the third driving wedge surface (g) and the fourth driving wedge surface (h).
9. The hinge assembly according to claim 8, wherein the first synchronous swing arm (310) is provided with at least two first driving wedge surfaces (e) in a direction around its own rotation axis, and the first The sliding portion (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), and each of the first driving wedge surfaces (e) is matched with each of the second driving wedge surfaces (f) in a one-to-one correspondence;

   And/or, the second synchronous swing arm (320) is provided with at least two third driving wedge surfaces (g) in the direction around its own rotation axis, and the second sliding portion (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), and each of the third driving wedge surfaces (g) corresponds to each of the fourth driving wedge surfaces (h) one by one.
10. The hinge assembly according to claim 7, wherein a sliding direction of the second sliding component (360) is parallel to the first rotating shaft (351).
11. The hinge assembly according to claim 10, wherein the first synchronous swing arm (310), the first sliding portion (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 portion (362) and the second elastic member (372) are sequentially sleeved on the outside of the second rotating shaft (352).
12. The hinge assembly according to claim 7, wherein the hinge assembly (300) further comprises a third elastic member (373), the third elastic member (373) being arranged between the seat body (340) and the first sliding member (330), and the first elastic member (371) and the third elastic member (373) being respectively located on opposite sides of the first sliding member (330),

    During the sliding process of the first sliding component (330) relative to the seat body (340), the third elastic component (373) undergoes elastic deformation.
13. The hinge assembly according to claim 12, wherein the first sliding component (330) is provided with a positioning column (334), the third elastic member (373) is sleeved on the outside of the positioning column (334), and the extension direction of the positioning column (334) is parallel to the sliding direction of the first sliding component (330).
14. The hinge assembly according to claim 1, wherein the hinge assembly (300) further comprises a first connecting member (381) and a second connecting member (382), the first synchronous swing arm (310) slidingly cooperates with the first connecting member (381), and/or the second synchronous swing arm (320) slidingly cooperates with the second connecting member (382).
15. An electronic device comprises a first device body (100), a second device body (200) and a hinge assembly (300) according to any one of claims 1 to 14, wherein the first synchronous swing arm (310) is connected to the first device body (100), and the second synchronous swing arm (320) is connected to the second device body (200).