WO2024160139A1 - Hinge assembly and electronic device - Google Patents

Abstract

Provided are a hinge assembly and an electronic device. The hinge assembly comprises: a base (810), a synchronous swing arm (100), a virtual swing arm (200), a first moving member (300), and an elastic member (400). The synchronous swing arm and the virtual swing arm are each rotatably arranged on the base, the elastic member is disposed between the synchronous swing arm and the first moving member, two ends of the elastic member respectively abut against the first moving member and the synchronous swing arm, the virtual swing arm is provided with a cam portion (210), the cam portion is provided with a first driving curved surface (a), the first moving member is provided with a second driving curved surface (b), and the first driving curved surface acts in concert with the second driving curved surface. In the process of the synchronous swing arm and the virtual swing arm rotating relative to the base, the cam portion of the virtual swing arm rotates and drives the motion of the first moving member by means of the first driving curved surface and the second driving curved surface, and the first moving member squeezes the synchronous swing arm by means of the elastic member.

Description

Hinge assembly and electronic device

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application filed with the China Patent Office on January 31, 2023, with application number 202310070845.7 and invention name “Hinge Assembly and Electronic Device”. The entire contents of the Chinese patent application are incorporated herein by reference.

Technical Field

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

Background Art

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 screen size of electronic devices is 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 technology, the foldable electronic device includes a first device body, a second device body and a hinge assembly. The first device body and the second device body can rotate relatively. The hinge assembly includes a synchronous swing arm, a virtual swing arm and an elastic member. The synchronous swing arm can rotate with the first device body or the second device body, and the synchronous swing arm acts on the elastic member during the rotation process. At the same time, the elastic member also acts on the synchronous swing arm in the opposite direction. The synchronous swing arm bears a damping force to keep the first device body and the second device body at a preset angle to improve the user experience; and the virtual swing arm is rotatably connected with the first device body or the second device body to provide support for the foldable electronic device.

However, due to the fitting tolerances between the components, the virtual swing arm is prone to shaking during the relative rotation of the first device body and the second device body, resulting in other movements besides rotation, making the foldable electronic device as a whole feel rubbing, resulting in poor stability of the foldable electronic device.

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 the first aspect, an embodiment of the present application provides a hinge assembly, which includes a base, a synchronous swing arm, a virtual swing arm, a first movable member and an elastic member, wherein the synchronous swing arm and the virtual swing arm are both rotatably arranged on the base, the elastic member is arranged between the synchronous swing arm and the first movable member, the two ends of the elastic member are respectively abutted against the first movable member and the synchronous swing arm, and the virtual swing arm is provided with a cam portion, the cam portion is provided with a first driving surface, the first movable member is provided with a second driving surface, and the first driving surface cooperates with the second driving surface; during the rotation of the synchronous swing arm and the virtual swing arm relative to the base, the cam portion of the virtual swing arm rotates and drives the first movable member to move through the first driving surface and the second driving surface, and the first movable member squeezes the synchronous swing arm through the elastic member.

In the second aspect, an embodiment of the present application also provides an electronic device, comprising a first device body, a second device body and the above-mentioned hinge assembly, wherein the first device body is connected to the second device body through the hinge assembly; during the relative rotation of the first device body and the second device body, the electronic device switches between an unfolded state and a folded state.

In the embodiment of the present application, during the rotation of the virtual swing arm relative to the base, since the cam portion of the virtual swing arm cooperates with the first movable member through the first driving surface and the second driving surface, the virtual swing arm will drive the first movable member to move when it rotates, and then the first movable member will squeeze the elastic member, causing the elastic member to undergo elastic deformation and generate a deformation amount. At the same time, the elastic member will also act in the opposite direction on the virtual swing arm, causing the virtual swing arm to be subjected to a damping force, thereby preventing the virtual swing arm from performing other movements except rotation relative to the base, preventing the foldable electronic device from having a sense of dislocation, effectively avoiding the problem of virtual position, and helping to improve the stability of the electronic device.

In addition, when the elastic member undergoes elastic deformation, the elastic member will also squeeze the synchronous swing arm. That is to say, the synchronous swing arm bears the elastic force generated by the deformation of the elastic member, namely the damping force, and the deformation of the elastic member is further generated due to the rotation of the virtual swing arm. Compared with the solution of only generating damping force by other means to act on the synchronous swing arm, the damping force borne by the synchronous swing arm is increased, and the foldable electronic device The device can be kept at a preset angle more stably, which is conducive to improving the user experience. Therefore, there is no need to increase the damping force borne by the synchronous swing arm by increasing the number of elastic parts, which is conducive to reducing the number of structural parts, simplifying the structure of the hinge assembly, and facilitating the miniaturization of electronic devices.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a hinge assembly disclosed in an embodiment of the present application;

FIG2 is an exploded view of a hinge assembly disclosed in an embodiment of the present application;

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

FIG4 is a schematic diagram of the coordination of the virtual swing arm, the first moving member and the elastic member disclosed in the embodiment of the present application;

5 is a schematic diagram of the coordination of the synchronous swing arm, the first moving member and the elastic member disclosed in the embodiment of the present application;

FIG. 6 is a schematic diagram of the structure of an electronic device disclosed in an embodiment of the present application.

Description of reference numerals:

100-synchronous swing arm, 101-first synchronous swing arm, 102-second synchronous swing arm, 110-first rotating part, c-third driving curved surface, 120-second rotating part, e-fifth driving curved surface,

200-virtual swing arm, 201-first virtual swing arm, 202-second virtual swing arm, 210-cam portion, a-first driving curved surface,

300-first moving part, 310-first gear, 320-second gear, 330-first transmission gear, 340-second transmission gear, 350-extrusion part, 351-first friction surface, b-second driving curved surface, 360-limiting bracket, 361-second friction surface,

400-elastic member, 410-first elastic member, 420-second elastic member,

510-first rotating shaft, 520-second rotating shaft, 530-third rotating shaft, 540-fourth rotating shaft,

600-second moving member, d-fourth driving curved surface,

700- third elastic member,

800-third moving part, f-sixth driving surface,

810-base,

910-first device body,

920-Second device body.

DETAILED DESCRIPTION

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 hinge assembly and the electronic device provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in combination with the accompanying drawings.

Please refer to Figures 1 to 6, the hinge assembly disclosed in the embodiment of the present application includes a base 810, a synchronous swing arm 100, a virtual swing arm 200, a first moving member 300 and an elastic member 400. The base 810 serves as a mounting base for the synchronous swing arm 100, the virtual swing arm 200, the first moving member 300 and the elastic member 400; the synchronous swing arm 100 and the virtual swing arm 200 can both be rotatably disposed on the base 810.

The elastic member 400 is disposed between the synchronous swing arm 100 and the first moving member 300. The two ends of the elastic member 400 are respectively in contact with the first moving member 300 and the synchronous swing arm 100, that is, the first end of the elastic member 400 is in contact with the first moving member 300, and the second end of the elastic member 400 is in contact with the synchronous swing arm 100. The elastic member 400 can be, but is not limited to, a spring. The virtual swing arm 200 is provided with a cam portion 210. The cam portion 210 A first driving curved surface a is provided, and a first moving member 300 is provided with a second driving curved surface b, and the first driving curved surface a cooperates with the second driving curved surface b. During the rotation of the synchronous swing arm 100 and the virtual swing arm 200 relative to the base 810, the cam portion 210 of the virtual swing arm 200 rotates and drives the first moving member 300 to move through the first driving curved surface a and the second driving curved surface b, and the first moving member 300 squeezes the synchronous swing arm 100 through the elastic member 400, that is, the first moving member 300 squeezes the elastic member 400 when moving, and the elastic member 400 undergoes elastic deformation, and the elastic member 400 squeezes the synchronous swing arm 100 at the same time.

In the embodiment of the present application, during the rotation of the virtual swing arm 200 relative to the base 810, since the cam portion 210 of the virtual swing arm 200 cooperates with the first movable member 300 through the first driving surface a and the second driving surface b, the virtual swing arm 200 will drive the first movable member 300 to move when it rotates, and then the first movable member 300 squeezes the elastic member 400, causing the elastic member 400 to undergo elastic deformation and generate a deformation amount. At the same time, the elastic member 400 will also act in the opposite direction on the virtual swing arm 200, causing the virtual swing arm 200 to be subjected to a damping force, thereby preventing the virtual swing arm 200 from performing other movements except rotation relative to the base 810, preventing the foldable electronic device from having a sense of dislocation, effectively avoiding the virtual position problem, and helping to improve the stability of the electronic device.

In addition, when the elastic member 400 undergoes elastic deformation, the elastic member 400 will also squeeze the synchronous swing arm 100, that is, the synchronous swing arm 100 bears the elastic force generated by the deformation of the elastic member 400, that is, the damping force, and the deformation of the elastic member 400 is further generated due to the rotation of the virtual swing arm 200. Compared with the solution of the top cam acting on the synchronous swing arm 100, the damping force borne by the synchronous swing arm 100 is increased, and the foldable electronic device can be more stably maintained at the preset angle, which is conducive to improving the user experience. Therefore, there is no need to increase the damping force borne by the synchronous swing arm 100 by increasing the number of elastic members 400, which is conducive to reducing the number of structural components, simplifying the structure of the hinge assembly, and facilitating the miniaturization of electronic devices.

In an optional embodiment, the number of virtual swing arms 200 may be one; or the number of virtual swing arms 200 may be at least two, such as including a first virtual swing arm 201 and a second virtual swing arm 202, the first virtual swing arm 201 and the second virtual swing arm 202 are both provided with a cam portion 210, each cam portion 210 is provided with a first driving curved surface a, the first moving member 300 is provided with at least two second driving curved surfaces b, and the first The driving curved surface a corresponds one to one with the second driving curved surface b.

In another embodiment, when the first virtual swing arm 201 or the second virtual swing arm 202 rotates, the first movable member 300 can be driven to move through the corresponding first driving surface a and the second driving surface b, so that the first movable member 300 squeezes the elastic member 400, and then the first virtual swing arm 201 or the second virtual swing arm 202 is subjected to the damping force applied by the elastic member 400, thereby preventing the first virtual swing arm 201 and the second virtual swing arm 202 from performing other movements except rotation relative to the base 810, effectively avoiding the existence of virtual positions in the first virtual swing arm 201 and the second virtual swing arm 202, preventing the foldable electronic device from having a sense of dislocation, and helping to further improve the stability of the electronic device.

In an optional embodiment, the base 810 can be provided with a support member, which is relatively provided with a first cylindrical groove and a second cylindrical groove. The synchronous swing arm 100, the elastic member 400 and the virtual swing arm 200 are sequentially arranged between the first cylindrical groove and the second cylindrical groove. The synchronous swing arm 100 is provided with a first column, which extends into the first cylindrical groove. The virtual swing arm 200 is provided with a second column, which extends into the second cylindrical groove. The first column is rotatably matched with the first cylindrical groove, and the second column is rotatably matched with the second cylindrical groove.

In another embodiment, the rotation axis of the synchronous swing arm 100 is parallel to the rotation axis of the virtual swing arm 200, the hinge assembly also includes a rotating shaft, the rotating shaft is rotatably arranged on the base 810, the elastic member 400 includes a first elastic member 410, the synchronous swing arm 100, the first elastic member 410, and the first movable member 300 are sequentially sleeved on the rotating shaft, the virtual swing arm 200 rotates, and the first movable member 300 moves along the axial direction of the rotating shaft. With this embodiment, by setting the rotating shaft, not only can the synchronous swing arm 100 and the virtual swing arm 200 be provided with rotation support, and the rotation stability can be improved, but also the moving direction of the first movable member 300 and the deformation direction of the first elastic member 410 can be guided, so as to ensure that the first movable member 300 accurately moves along the axial direction of the rotating shaft, and the first elastic member 410 is elastically deformed along the axial direction of the rotating shaft.

In an optional embodiment, the number of the synchronous swing arm 100, the rotating shaft, and the first elastic member 410 are all one. In another embodiment, as shown in FIG. 4 and FIG. 5 , the number of the synchronous swing arms 100 is at least two, and the at least two synchronous swing arms 100 include a first synchronous swing arm 101 and a second synchronous swing arm 102. The number of the rotating shafts is at least two, and the at least two rotating shafts include a first rotating shaft 510 and a second rotating shaft 520 that are parallel to each other. The first synchronous swing arm 101 and the second synchronous swing arm 102 are respectively sleeved on the first rotating shaft 510 and the second rotating shaft 520. The first rotating shaft 510 and the second rotating shaft 520 are both sleeved with the first elastic member 410. The first moving member 300 includes a first gear 310, a second gear 320 and an extrusion member 350. The first gear 310 is sleeved on the outside of the first rotating shaft 510, the second gear 320 is sleeved on the outside of the second rotating shaft 520, and the first gear 310 is transmission-connected with the second gear 320. The extrusion member 350 is provided with a second driving curved surface b. When the virtual swing arm 200 rotates, the extrusion member 350 moves and simultaneously drives the first gear 310 and the second gear 320 to move along the axial direction of the first rotating shaft 510.

With this embodiment, when the virtual swing arm 200 rotates, the first moving member 300 moves and squeezes at least two first elastic members 410 at the same time, and then at least two first elastic members 410 squeeze at least two synchronous swing arms 100 respectively, that is, the first synchronous swing arm 101 and the second synchronous swing arm 102 respectively bear the damping force applied by the corresponding first elastic member 410, and the damping force is generated by the rotation of the virtual swing arm 200, so the damping force borne by the first synchronous swing arm 101 and the second synchronous swing arm 102 is increased, which is conducive to further stably maintaining the electronic device at the preset angle and improving the user experience. Moreover, when the first synchronous swing arm 101 rotates, the first rotating shaft 510 can follow the rotation. Since the first gear 310 and the second gear 320 are connected in transmission, when the first rotating shaft 510 rotates, the second rotating shaft 520 is driven to rotate through the first gear 310 and the second gear 320, and then the second synchronous swing arm 102 is driven to rotate, so that the first synchronous swing arm 101 and the second synchronous swing arm 102 are synchronously rotated, and the folding efficiency or unfolding efficiency of the electronic device is improved.

Optionally, the extrusion piece 350 is provided with at least two second driving curved surfaces b, and the at least two second driving curved surfaces b correspond to and cooperate with the first driving curved surface a of the first virtual swing arm 201 and the first driving curved surface a of the second virtual swing arm 202 , respectively.

In an optional embodiment, the elastic member 400 only includes the first elastic member 410; or, as shown in FIG. 4 , the number of the elastic members 400 is at least two, and the at least two elastic members 400 include the first elastic member 410 and the second elastic member 420, and the second elastic member 420 is disposed between the first rotating shaft 510 and the second rotating shaft 520, and the first movable member 300 squeezes the synchronous swing arm 100 through the second elastic member 420 when moving. The second elastic member 420 can be, but is not limited to, a spring. Compared with the previous embodiment, the latter embodiment adds the second elastic member 420, and the first movable member 300 squeezes the first elastic member 410 and the synchronous swing arm 100 simultaneously when moving. The second elastic member 420, therefore, increases the total deformation of the elastic member 400. The damping force applied by the first elastic member 410 and the second elastic member 420 to the virtual swing arm 200 through the first movable member 300 further prevents the virtual swing arm 200 from generating a virtual position, thereby improving the stability of the electronic device. At the same time, the damping force applied by the first elastic member 410 and the second elastic member 420 to the synchronous swing arm 100 also increases, which is more conducive to stably maintaining the electronic device at any angle, thereby further improving the user experience.

In an optional embodiment, the hinge assembly further includes a third rotating shaft 530 and a fourth rotating shaft 540 which are parallel to each other, the third rotating shaft 530 is parallel to the first rotating shaft 510, and the third rotating shaft 530 and the fourth rotating shaft 540 are both sleeved with a second elastic member 420, the first moving member 300 further includes a first transmission gear 330 and a second transmission gear 340, the first transmission gear 330 is sleeved on the outside of the third rotating shaft 530, the second transmission gear 340 is sleeved on the outside of the fourth rotating shaft 540, and the first transmission gear 330 is sleeved on the outside of the third rotating shaft 530. The transmission gears 340 are meshed with each other, and the first transmission gear 330 is meshed with the first gear 310, and the second transmission gear 340 is meshed with the second gear 320, that is, the first gear 310, the first transmission gear 330, the second transmission gear 340 and the second gear 320 are meshed in sequence to ensure that the first synchronous swing arm 101 and the second synchronous swing arm 102 rotate synchronously. When the virtual swing arm 200 rotates, the extrusion piece 350 moves and drives the first transmission gear 330 and the second transmission gear 340 to move axially along the third rotating shaft 530.

With this embodiment, the number of second elastic members 420 is increased, so the total deformation of the elastic member 400 during the movement of the extrusion member 350 is further increased, and the damping force applied by the elastic member 400 to the virtual swing arm 200 and the synchronous swing arm 100 is also further increased, which can more effectively avoid the virtual swing arm 200 from generating a virtual position, and is more conducive to the electronic device being stably maintained at a preset angle, thereby improving the stability of the electronic device; moreover, the deformation direction of the second elastic member 420 is guided by the third rotating shaft 530 and the fourth rotating shaft 540, so that the second elastic member 420 is accurately deformed along the third rotating shaft 530, thereby ensuring that the elastic force generated by the second elastic member 420 is an effective damping force.

Of course, in other embodiments, the hinge assembly may not be provided with the third rotating shaft 530 and the fourth rotating shaft 540 , and the second elastic member 420 may be directly provided between the first rotating shaft 510 and the second rotating shaft 520 .

In an optional embodiment, the extrusion member 350 is provided with a first friction surface 351, and the first friction surface 351 is respectively in contact with the first end surface of the first gear 310, the first end surface of the second gear 320, and the first transmission gear The first end face of 330 contacts the first end face of the second transmission gear 340; and/or, the first movable member 300 also includes a limiting bracket 360, the limiting bracket 360 is arranged on the side of the first gear 310 and the second gear 320 facing away from the extrusion member 350, and the limiting bracket 360 is provided with a second friction surface 361, the second friction surface 361 contacts the second end face of the first gear 310, the second end face of the second gear 320, the second end face of the first transmission gear 330 and the second end face of the second transmission gear 340 respectively, the first gear 310 and the second gear 320 squeeze the first elastic member 410 through the limiting bracket 360, and the first transmission gear 330 and the second transmission gear 340 squeeze the second elastic member 420 through the limiting bracket 360.

By contacting the first end face of each gear through the first friction surface 351, and/or contacting the second end face of each gear through the second friction surface 361, during the synchronous rotation of the first synchronous swing arm 101 and the second synchronous swing arm 102, the first gear 310, the first transmission gear 330, the second transmission gear 340 and the second gear 320 all rotate, so that friction force is generated between the first friction surface 351 and the first end face of each gear, and/or friction force is generated between the second friction surface 361 and the second end face of each gear, and the rotational damping force is increased, which is conducive to the electronic device to be able to maintain a preset angle more stably, thereby improving the user experience.

Of course, in other embodiments, the extrusion member 350 may not be provided with the first friction surface 351, and the extrusion member 350 is in smooth contact with the first end surface of each gear; the first movable member 300 may also not be provided with the limiting bracket 360, the first gear 310 and the second gear 320 directly squeeze the first elastic member 410, and the first transmission gear 330 and the second transmission gear 340 directly squeeze the second elastic member 420, that is, only relying on the damping force applied to the synchronous swing arm 100 by the elastic member 400 to keep the electronic device at a preset angle.

In an optional embodiment, the elastic member 400 directly abuts against the synchronous swing arm 100 , so when the elastic member 400 generates elastic deformation, the elastic member 400 directly applies a damping force to the synchronous swing arm 100 .

In another embodiment, the hinge assembly further includes a second moving member 600, the synchronous swing arm 100 includes a first rotating portion 110, the second moving member 600 is disposed between the first rotating portion 110 and the elastic member 400, the first rotating portion 110 is provided with a third driving surface c, the second moving member 600 is provided with a fourth driving surface d, the third driving surface c cooperates with the fourth driving surface d, when the first rotating portion 110 rotates, the second moving member 600 is driven to move by the third driving surface c and the fourth driving surface d, and the second moving member 600 squeezes the elastic member 400, and the elastic member 400 undergoes elastic deformation. Optionally, the first elastic member 410 and the second elastic member 420 are both in contact with the second moving member 600, and the first elastic member 410 and the second elastic member 420 squeeze the synchronous swing arm 100 through the second moving member 600.

By adopting this embodiment, the rotation of the synchronous swing arm 100 is converted into movement by relying on the second movable member 600, so that the elastic member 400 will further generate a deformation amount due to the rotation of the synchronous swing arm 100 on the basis of the deformation amount generated by the rotation of the virtual swing arm 200. Therefore, the deformation amount of the elastic member 400 is further increased, and the damping force applied by the elastic member 400 to the virtual swing arm 200 and the synchronous swing arm 100 is also further increased, which can more effectively avoid the virtual swing arm 200 from generating a virtual position, and is more conducive to the electronic device to stably maintain a preset angle, thereby improving the stability of the electronic device.

Optionally, the second moving member 600 may be provided with a through hole, and the rotating shaft passes through the through hole. Further, optionally, the second moving member 600 is provided with at least two first through holes and at least two second through holes, the first rotating shaft 510 and the second rotating shaft 520 respectively pass through each first through hole, and the third rotating shaft 530 and the fourth rotating shaft 540 respectively pass through each second through hole. In this way, the moving direction of the second moving member 600 is guided by the rotating shaft, so that the second moving member 600 is ensured to move accurately along the axial direction of the rotating shaft.

In an optional embodiment, as shown in Fig. 1-Fig. 2 and Fig. 5, hinge assembly also includes the 3rd elastic member 700 and the 3rd moving member 800, synchronous swing arm 100 includes the second rotating part 120, the 3rd moving member 800 is arranged between the 3rd elastic member 700 and the second rotating part 120, the second rotating part 120 is provided with the 5th driving curved surface e, the 3rd moving member 800 is provided with the 6th driving curved surface f, the 5th driving curved surface e matches with the 6th driving curved surface f, the 3rd moving member 800 is driven to move by the 5th driving curved surface e and the 6th driving curved surface f when the second rotating part 120 rotates, the 3rd moving member 800 is squeezed by the 3rd elastic member 700, and the 3rd elastic member 700 is elastically deformed. Wherein, the 3rd elastic member 700 can be but not limited to a spring. Optionally, one end of the 3rd elastic member 700 directly abuts the 3rd moving member 800, and the other end of the 3rd elastic member 700 directly abuts the base 810, and in the moving process of the 3rd moving member 800, the 3rd elastic member 700 is compressed.

In this embodiment, when the second rotating part 120 rotates, the third elastic member 700 is driven by the third moving member 800 to generate elastic deformation. At the same time, the third elastic member 700 is moved toward the second rotating part 120 through the third moving member 800. The rotating part 120 applies a damping force, so that the damping force borne by the synchronous swing arm 100 is further increased, which is more conducive to stably maintaining the electronic device at any angle when unfolded.

Optionally, the number of the third elastic member 700 and the third moving member 800 is at least two, and the at least two third elastic members 700 are respectively sleeved on the outside of the first rotating shaft 510 and the second rotating shaft 520, and the at least two third moving members 800 are also respectively sleeved on the outside of the first rotating shaft 510 and the second rotating shaft 520, and the first synchronous swing arm 101 and the second synchronous swing arm 102 both include a second rotating portion 120, and the second rotating portion 120 of the first synchronous swing arm 101 and the second rotating portion 120 of the second synchronous swing arm 102 are respectively sleeved on the outside of the first rotating shaft 510 and the second rotating shaft 520. In this way, the second rotating portion 120 of the first synchronous swing arm 101 and the second rotating portion 120 of the second synchronous swing arm 102 are both subjected to the elastic force generated by the third elastic member 700, so the damping force borne by the first synchronous swing arm 101 and the second synchronous swing arm 102 is increased, which is further conducive to the electronic device being stably maintained at any angle when unfolded.

Of course, in other embodiments, the hinge assembly may not be provided with the third elastic member 700 and the third movable member 800, and the synchronous swing arm 100 only includes the first rotating part 110, that is, only the first elastic member 410 and the second elastic member 420 are relied on to apply damping force to the synchronous swing arm 100.

Based on the hinge assembly disclosed in the present application, the embodiment of the present application also discloses an electronic device, the electronic device includes a first device body 910, a second device body 920 and the hinge assembly in the above embodiment, and the first device body 910 is connected to the second device body 920 through the hinge assembly. During the relative rotation of the first device body 910 and the second device body 920, the electronic device switches between the unfolded state and the folded state. Specifically, the first synchronous swing arm 101 is connected to the first device body 910, and the second synchronous swing arm 102 is connected to the second device body 920. With such a configuration, the use of the hinge assembly can prevent the electronic device from having a sense of dislocation, which is conducive to improving the stability of the electronic device; moreover, the damping force during the folding or unfolding process is increased, and the electronic device can be more stably maintained at a preset angle, thereby improving the user experience.

The electronic device disclosed in the embodiments of the present application may be a smart phone, a tablet computer, an e-book reader, a wearable device, an electronic game console, or the like. The embodiments of the present application do not limit the specific types of electronic devices.

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 (10)

A hinge assembly, wherein the hinge assembly comprises a base (810), a synchronous swing arm (100), a virtual swing arm (200), a first moving member (300) and an elastic member (400), wherein: The synchronous swing arm (100) and the virtual swing arm (200) are both rotatably arranged on the base (810), the elastic member (400) is arranged between the synchronous swing arm (100) and the first movable member (300), two ends of the elastic member (400) are respectively in contact with the first movable member (300) and the synchronous swing arm (100), and the virtual swing arm (200) is provided with a cam portion (210), the cam portion (210) is provided with a first driving curved surface (a), the first movable member (300) is provided with a second driving curved surface (b), and the first driving curved surface (a) matches the second driving curved surface (b); During the rotation of the synchronous swing arm (100) and the virtual swing arm (200) relative to the base (810), the cam portion (210) of the virtual swing arm (200) rotates and drives the first moving member (300) to move via the first driving curved surface (a) and the second driving curved surface (b), and the first moving member (300) squeezes the synchronous swing arm (100) via the elastic member (400). According to the hinge assembly of claim 1, the number of the virtual swing arms (200) is at least two, the at least two virtual swing arms (200) include a first virtual swing arm (201) and a second virtual swing arm (202), the first virtual swing arm (201) and the second virtual swing arm (202) are both provided with the cam portion (210), each of the cam portions (210) is provided with the first driving surface (a), the first moving member (300) is provided with at least two of the second driving surfaces (b), and the first driving surface (a) corresponds to the second driving surface (b) one by one. According to the hinge assembly of claim 1, wherein the rotation axis of the synchronous swing arm (100) is parallel to the rotation axis of the virtual swing arm (200), the hinge assembly also includes a rotating shaft, the elastic member (400) includes a first elastic member (410), the synchronous swing arm (100), the first elastic member (410), and the first movable member (300) are sequentially mounted on the rotating shaft, and when the virtual swing arm (200) rotates, the first movable member (300) moves along the axial direction of the rotating shaft. The hinge assembly according to claim 3, wherein the number of the synchronous swing arms (100) is at least two, the at least two synchronous swing arms (100) include a first synchronous swing arm (101) and a second synchronous swing arm (102), the number of the rotating shafts is at least two, the at least two rotating shafts include A first rotating shaft (510) and a second rotating shaft (520) are parallel to each other, the first synchronous swing arm (101) and the second synchronous swing arm (102) are respectively sleeved on the outside of the first rotating shaft (510) and the second rotating shaft (520), and the first rotating shaft (510) and the second rotating shaft (520) are both sleeved with the first elastic member (410); The first moving member (300) comprises a first gear (310), a second gear (320) and an extrusion member (350); the first gear (310) is sleeved on the outside of the first rotating shaft (510); the second gear (320) is sleeved on the outside of the second rotating shaft (520); the first gear (310) and the second gear (320) are transmission-connected; the extrusion member (350) is provided with the second driving curved surface (b); when the virtual swing arm (200) rotates, the extrusion member (350) moves and simultaneously drives the first gear (310) and the second gear (320) to move axially along the first rotating shaft (510). The hinge assembly according to claim 4, wherein the number of the elastic members (400) is at least two, and the at least two elastic members (400) include the first elastic member (410) and the second elastic member (420), and the second elastic member (420) is arranged between the first rotating shaft (510) and the second rotating shaft (520). The hinge assembly according to claim 5, wherein the hinge assembly further comprises a third rotating shaft (530) and a fourth rotating shaft (540) parallel to each other, and the second elastic member (420) is sleeved on the outside of the third rotating shaft (530) and the fourth rotating shaft (540), The first moving member (300) further comprises a first transmission gear (330) and a second transmission gear (340), wherein the first transmission gear (330) is sleeved on the outside of the third rotating shaft (530), and the second transmission gear (340) is sleeved on the outside of the fourth rotating shaft (540), the first transmission gear (330) is meshed with the second transmission gear (340), and the first transmission gear (330) is meshed with the first gear (310), and the second transmission gear (340) is meshed with the second gear (320), and when the virtual swing arm (200) rotates, the extrusion member (350) moves and drives the first transmission gear (330) and the second transmission gear (340) to move axially along the third rotating shaft (530). The hinge assembly according to claim 6, wherein the extrusion member (350) is provided with a first friction surface (351), and the first friction surface (351) is respectively in contact with the first friction surface of the first gear (310). The end surface, the first end surface of the second gear (320), the first end surface of the first transmission gear (330) and the first end surface of the second transmission gear (340) are in contact; And/or, the first moving member (300) further comprises a limiting bracket (360), the limiting bracket (360) being arranged on a side of the first gear (310) and the second gear (320) facing away from the extruding member (350), and the limiting bracket (360) being provided with a second friction surface (361), the second friction surface (361) being in contact with a second end surface of the first gear (310), a second end surface of the second gear (320), a second end surface of the first transmission gear (330) and a second end surface of the second transmission gear (340), respectively, the first gear (310) and the second gear (320) extruding the first elastic member (410) through the limiting bracket (360), and the first transmission gear (330) and the second transmission gear (340) extruding the second elastic member (420) through the limiting bracket (360). The hinge assembly according to claim 1, wherein the hinge assembly further comprises a second moving member (600), the synchronous swing arm (100) comprises a first rotating portion (110), wherein: The second movable member (600) is arranged between the first rotating part (110) and the elastic member (400); the first rotating part (110) is provided with a third driving curved surface (c); the second movable member (600) is provided with a fourth driving curved surface (d); the third driving curved surface (c) cooperates with the fourth driving curved surface (d); when the first rotating part (110) rotates, the second movable member (600) is driven to move by the third driving curved surface (c) and the fourth driving curved surface (d); the second movable member (600) squeezes the elastic member (400), and the elastic member (400) undergoes elastic deformation. The hinge assembly according to claim 1, wherein the hinge assembly further comprises a third elastic member (700) and a third moving member (800), the synchronous swing arm (100) comprises a second rotating portion (120), wherein: The third moving member (800) is arranged between the third elastic member (700) and the second rotating part (120); the second rotating part (120) is provided with a fifth driving curved surface (e); the third moving member (800) is provided with a sixth driving curved surface (f); the fifth driving curved surface (e) cooperates with the sixth driving curved surface (f); when the second rotating part (120) rotates, the third moving member (800) is driven to move by the fifth driving curved surface (e) and the sixth driving curved surface (f); the third moving member (800) squeezes the third elastic member (700), and the third elastic member (700) is moved. Elastic deformation. An electronic device, comprising a first device body (910), a second device body (920) and the hinge assembly according to any one of claims 1 to 9, wherein the first device body (910) is connected to the second device body (920) through the hinge assembly; During the relative rotation of the first device body (910) and the second device body (920), the electronic device switches between an unfolded state and a folded state.