Hinge mechanism and electronic device

Abstract

The invention discloses a hinge mechanism and electronic equipment, and belongs to the technical field of communication. The hinge mechanism comprises a hinge base, a swing arm assembly and a damping assembly, the swing arm assembly is rotationally connected with the hinge base around a first axis through a synchronizing shaft, the damping assembly is arranged between the hinge base and the swing arm assembly and comprises an eccentric rotating part, a sliding part and a damping part, and the eccentric rotating part is rotationally connected with the swing arm assembly around a second axis; the sliding part and the eccentric rotating part are rotationally connected around a third axis, the damping part is arranged on the hinge base and is in sliding fit with the sliding part, and when the swing arm assembly drives the eccentric rotating part to rotate relative to the hinge base, the sliding part slides relative to the damping part and is in damping fit with the damping part, and the eccentric rotating part rotates relative to the swing arm assembly; the sliding direction of the sliding piece intersects with the direction where the first axis is located.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a hinge mechanism and an electronic device. Background Art

[0002] With the development of technology, people's dependence on electronic devices has become increasingly high. To improve the portability and use comfort of electronic devices, the application range of foldable electronic devices has become wider and wider.

[0003] In related technologies, foldable electronic devices rely on a hinge mechanism to achieve folding and unfolding. The hinge mechanism includes a base, a swing arm, a moving cam, and a spring. The swing arm is rotatably connected to the base through a rotating shaft. The swing arm includes a cylindrical portion. The cylindrical portion, the moving cam, and the spring are all sleeved outside the rotating shaft. A first curved surface is provided at the end of the cylindrical portion, and a second curved surface is provided at the end of the moving cam. The first curved surface and the second curved surface cooperate with each other. When the swing arm rotates relative to the base, the second curved surface is squeezed by the first curved surface, causing the moving cam to move axially along the rotating shaft. Then, the moving cam acts on the spring, causing the spring to undergo elastic deformation and generate a damping force, so that the swing arm hovers at a certain angle. However, since the spring is prone to warping during the assembly process, it affects the flatness of the hinge mechanism in the axial direction. Therefore, the damping mechanism in related technologies cannot ensure the flatness of the hinge assembly while providing a rotational damping force. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a hinge mechanism and an electronic device, which can solve the problem that the damping mechanism in related technologies cannot ensure the flatness of the hinge assembly while providing a rotational damping force.

[0005] In a first aspect, the embodiments of this application provide a hinge mechanism, including a hinge base, a swing arm assembly, and a damping assembly. The swing arm assembly is rotatably connected to the hinge base around a first axis through a synchronous shaft. The damping assembly is disposed between the hinge base and the swing arm assembly. The damping assembly includes an eccentric rotating member, a sliding member, and a damping member. The eccentric rotating member is rotatably connected to the swing arm assembly around a second axis. The sliding member is rotatably connected to the eccentric rotating member around a third axis. The damping member is disposed on the hinge base, and the damping member is in sliding cooperation with the sliding member. When the swing arm assembly drives the eccentric rotating member to rotate relative to the hinge base, the sliding member slides relative to the damping member, and the sliding member is in damping cooperation with the damping member. The eccentric rotating member rotates relative to the swing arm assembly. Wherein, the sliding direction of the sliding member intersects with the direction where the first axis is located.

[0006] In a second aspect, an embodiment of the present application further provides an electronic device, including a first device body, a second device body, and the hinge mechanism described above, where the first device body is connected to the second device body through the hinge mechanism; During the relative rotation of the first device body and the second device body, the electronic device switches between an unfolded state and a folded state.

[0007] In the embodiment of the present application, the hinge mechanism uses a hinge base to rotationally support the swing arm assembly, ensuring that the swing arm assembly rotates smoothly around the first axis, and realizing the smooth folding and unfolding of the hinge mechanism. At the same time, the spring and the moving cam are cancelled. During the rotation of the swing arm assembly, the eccentric rotating part and the sliding part apply a damping force to the damping part, so that the damping part provides the damping force during the rotation of the swing arm, ensuring that the swing arm assembly can hover at a certain angle. At the same time, the damping mechanism provided by this solution does not have the eccentricity problem caused by the spring and the spring deformation, which is beneficial to improving the flatness of the hinge mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic structural diagram of the hinge mechanism disclosed in the embodiment of the present application; Figure 2 is an exploded view of the hinge mechanism disclosed in the embodiment of the present application; Figure 3 is a schematic partial structural diagram of the hinge mechanism disclosed in the embodiment of the present application; Figure 4 is an exploded view of the partial structure of the hinge mechanism disclosed in the embodiment of the present application; Figure 5 is an exploded view of the hinge base, the damping part, and the sliding part disclosed in the embodiment of the present application; Figure 6 is an exploded view of the swing arm, the eccentric rotating part, and the sliding part disclosed in the embodiment of the present application; Figure 7 is a schematic diagram of the mating structure of the hinge base, the damping part, the sliding part, and the eccentric rotating part disclosed in the embodiment of the present application; Figure 8 is a schematic structural diagram of the first swing arm and the second swing arm disclosed in the embodiment of the present application; Figure 9 is a schematic structural diagram of the eccentric rotating part disclosed in the embodiment of the present application; Figure 10 is a schematic structural diagram of the first sliding part and the second sliding part disclosed in the embodiment of the present application; Figure 11 is a schematic structural diagram of the hinge mechanism in the folded state disclosed in the embodiment of the present application; Figure 12It is a schematic diagram of the cooperation structure of the hinge base, the damper, the sliding member and the eccentric rotating member in the folded state disclosed in the embodiments of the present application; Figure 13 It is a schematic diagram of the cooperation structure of the hinge base, the damper and the sliding member in the folded state disclosed in the embodiments of the present application; Figure 14 It is a schematic diagram of the structure of the hinge mechanism during the unfolding process disclosed in the embodiments of the present application; Figure 15 It is a schematic diagram of the cooperation structure of the hinge base, the damper, the sliding member and the eccentric rotating member during the unfolding process disclosed in the embodiments of the present application; Figure 16 It is a schematic diagram of the cooperation structure of the hinge base, the damper and the sliding member during the unfolding process disclosed in the embodiments of the present application; Figure 17 It is a schematic diagram of the structure of the hinge mechanism when the unfolding is completed disclosed in the embodiments of the present application; Figure 18 It is a schematic diagram of the cooperation structure of the hinge base, the damper, the sliding member and the eccentric rotating member when the unfolding is completed disclosed in the embodiments of the present application; Figure 19 It is a schematic diagram of the cooperation structure of the hinge base, the damper and the sliding member when the unfolding is completed disclosed in the embodiments of the present application; Figure 20 It is a schematic diagram of the structure of the hinge mechanism in the unfolded state disclosed in the embodiments of the application; Figure 21 It is a schematic diagram of the cooperation structure of the hinge base, the damper, the sliding member and the eccentric rotating member in the unfolded state disclosed in the embodiments of the application; Figure 22 It is a schematic diagram of the cooperation structure of the hinge base, the damper and the sliding member in the unfolded state disclosed in the embodiments of the present application; Figure 23 It is a schematic diagram of the structure of the hinge mechanism during the folding process disclosed in the embodiments of the present application; Figure 24 It is a schematic diagram of the cooperation structure of the hinge base, the damper, the sliding member and the eccentric rotating member during the folding process disclosed in the embodiments of the present application; Figure 25 It is a schematic diagram of the cooperation structure of the hinge base, the damper and the sliding member during the folding process disclosed in the embodiments of the present application; Figure 26 It is a schematic diagram of the structure of the hinge mechanism when the folding is completed disclosed in the embodiments of the present application; Figure 27 It is a schematic diagram of the cooperation structure of the hinge base, the damper, the sliding member and the eccentric rotating member when the folding is completed disclosed in the embodiments of the present application; Figure 28 It is a schematic diagram of the mating structure of the hinge base, the damping member, and the sliding member when the folding is completed, which is disclosed in the embodiments of the present application; Figure 29 It is a schematic diagram of the structure of the electronic device disclosed in the embodiments of the present application.

[0009] Explanation of the reference numerals: 100 - hinge base, 110 - limit chute, 110a - first chute side wall, 110b - second chute side wall, 111 - first chute, 112 - second chute, 101 - first base body, 102 - second base body, 200 - swing arm assembly, 200a - shaft groove, 201 - first swing arm, 201a - first engaging tooth, 202 - second swing arm, 202a - second engaging tooth, S - damping assembly, 300 - eccentric rotating member, 310 - first rotating shaft, 320 - shaft hole, 400 - damping member, 410 - first damping sheet, 420 - second damping sheet, 401 - damping groove, 401a - first damping groove, 401b - second damping groove, 500 - sliding member, 510 - first sliding member, 520 - second sliding member, 501 - slider, 502 - second rotating shaft, 610 - first gear, 620 - second gear, S1 - first axis, S2 - second axis, S3 - third axis, A - first rotation direction, B - second rotation direction, 710 - support member, 720 - frame bracket, 730 - connecting plate, 740 - virtual swing arm assembly, 750 - virtual swing arm bracket, 810 - first device body, 820 - second device body. Detailed implementation manners

[0010] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings 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. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0011] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same 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 description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0012] The hinge mechanism and electronic device provided by the embodiments of this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and their application scenarios.

[0013] Please refer to Figures 1 - 29 , the hinge mechanism disclosed in the embodiments of this application includes a hinge base 100, a swing arm assembly 200, and a damping assembly S. Among them, the hinge base 100 serves as the installation base for other components, and both the swing arm assembly 200 and the damping assembly S are installed on the hinge base 100; the swing arm assembly 200 includes a first swing arm 201 and a second swing arm 202, and the first swing arm 201 and the second swing arm 202 are respectively located on both sides of the hinge base 100; the damping assembly S is used to apply a damping force to the swing arm assembly 200 during the rotation process.

[0014] Refer to Figure 8 As shown, the swing arm assembly 200 is rotatably connected to the hinge base 100 around a first axis S1 through a synchronous shaft, and the first axis S1 is the axis of the synchronous shaft. Optionally, the swing arm assembly 200 can be provided with a shaft hole 320, the synchronous shaft is connected to the hinge base 100, the synchronous shaft passes through the shaft hole 320, and the synchronous shaft is rotationally matched with the shaft hole 320. The first swing arm 201 and the second swing arm 202 can be rotatably connected to the hinge base 100 through different synchronous shafts, and the synchronous shaft corresponding to the first swing arm 201 is parallel to the synchronous shaft corresponding to the second swing arm 202, that is, the rotation axis of the first swing arm 201 is parallel to the rotation axis of the second swing arm 202. Of course, Refer to Figure 3 As shown, the damping assembly S is disposed between the hinge base 100 and the swing arm assembly 200. Optionally, the damping assembly S can be provided only between the hinge base 100 and the first swing arm 201, or only between the hinge base 100 and the second swing arm 202, or the damping assembly S can be provided between the hinge base 100 and the first swing arm 201 and between the hinge base 100 and the second swing arm 202. In short, during the rotation of the swing arm assembly 200 relative to the hinge base 100, the damping assembly S applies a damping force to the swing arm assembly 200 so that the swing arm assembly 200 hovers at a certain angle.

[0015] Specifically, referring to Figures 4 - 7 as shown, the damping assembly S includes an eccentric rotating member 300, a sliding member 500, and a damping member 400. Among them, the eccentric rotating member 300 is eccentrically arranged relative to the swing arm assembly 200. The eccentric rotating member 300 is rotatably connected to the swing arm assembly 200 around the second axis S2. That is to say, the axis around which the eccentric rotating member 300 rotates relative to the swing arm assembly 200 is different from the axis around which the swing arm assembly 200 rotates relative to the hinge base 100. Optionally, in combination with Figure 8 and Figure 9 as shown, one of the eccentric rotating member 300 and the swing arm assembly 200 is provided with an axial groove 200a, and the other is provided with a first rotating shaft 310. The first rotating shaft 310 extends into the axial groove 200a, and the first rotating shaft 310 is rotatably matched with the groove wall surface of the axial groove 200a, so as to realize the rotational connection between the eccentric rotating member 300 and the swing arm assembly 200. Of course, the eccentric rotating member 300 and the swing arm assembly 200 can also be rotationally connected through other structures other than the axial groove 200a and the first rotating shaft 310.

[0016] The sliding member 500 is rotatably connected to the eccentric rotating member 300 around the third axis S3. That is, the axis around which the sliding member 500 rotates relative to the eccentric rotating member 300 is different from the axis around which the eccentric rotating member 300 rotates relative to the swing arm assembly 200. Optionally, in combination with Figure 9 and Figure 10 as shown, the sliding member 500 includes a slider 501 and a second rotating shaft 502. The second rotating shaft 502 is arranged on the slider 501. The eccentric rotating member 300 is provided with an axial hole 320. The second rotating shaft 502 penetrates through the axial hole 320, and the second rotating shaft 502 is rotatably matched with the axial hole 320. Or, the second rotating shaft 502 is arranged on the eccentric rotating member 300, and the axial hole 320 is arranged on the slider 501. Of course, the sliding member 500 and the eccentric rotating member 300 can also be rotationally connected through other structures other than the axial hole 320 and the second rotating shaft 502.

[0017] The damping member 400 is arranged on the hinge base 100. Optionally, the damping member 400 can be fixedly connected to the hinge base 100 by welding, bonding and other means. Moreover, the damping member 400 is slidably matched with the sliding member 500. Optionally, the damping member 400 can form a damping groove 401, and the sliding member 500 slides in the damping groove 401, so as to realize the sliding cooperation between the damping member 400 and the sliding member 500; or, the damping member 400 and the sliding member 500 can be slidably matched through a slide rail structure.

[0018] When the swing arm assembly 200 drives the eccentric rotating member 300 to rotate relative to the hinge base 100, the sliding member 500 slides relative to the damping member 400, and the sliding member 500 is in damping cooperation with the damping member 400, and the eccentric rotating member 300 rotates relative to the swing arm assembly 200. Wherein, the sliding direction of the sliding member 500 intersects with the direction of the first axis S1.

[0019] That is to say, the eccentric rotating member 300 is driven by the swing arm assembly 200 to rotate relative to the hinge base 100. When the eccentric rotating member 300 moves, it will drive the sliding member 500 to slide relative to the damping member 400. During the sliding process of the sliding member 500, it is in damping cooperation with the damping member 400, so that the damping member 400 exerts a damping force to hinder the sliding of the sliding member 500. Furthermore, the sliding member 500 exerts a damping force on the swing arm assembly 200 through the eccentric rotating member 300 to ensure that the swing arm assembly 200 hovers at a certain angle. At the same time, to avoid jamming during movement, the eccentric rotating member 300 is rotatably connected to the swing arm assembly 200. During the sliding process of the sliding member 500, the eccentric rotating member 300 rotates relative to the swing arm assembly 200.

[0020] Optionally, when the swing arm assembly 200 drives the eccentric rotating member 300 to rotate relative to the hinge base 100 along the first rotation direction A, the eccentric rotating member 300 rotates relative to the swing arm assembly 200 along the second rotation direction B, and the second rotation direction B is opposite to the first rotation direction A. Specifically, during the process of the swing arm assembly 200 rotating relative to the hinge base 100 to unfold, the first rotation direction A is the direction indicated by the arrows in Figure 11 and Figure 14 , the second rotation direction B is the direction indicated by the arrows in Figure 12 and Figure 15 , and the sliding direction of the sliding member 500 relative to the damping member 400 is the direction indicated by the arrows in Figure 13 and Figure 16 ; during the process of the swing arm assembly 200 rotating relative to the hinge base 100 to fold, the first rotation direction A is the direction indicated by the arrows in Figure 20 and Figure 23 , the second rotation direction B is the direction indicated by the arrows in Figure 21 and Figure 24 , and the sliding direction of the sliding member 500 relative to the damping member 400 is the direction indicated by the arrows in Figure 22 and Figure 25 .

[0021] In the embodiment of the present application, the hinge mechanism uses the hinge base 100 to rotatably support the swing arm assembly 200, ensuring that the swing arm assembly 200 smoothly rotates around the first axis S1, and realizing the smooth folding and unfolding of the hinge mechanism. At the same time, the spring and the moving cam are cancelled. During the rotation of the swing arm assembly 200, the eccentric rotating member 300 and the sliding member 500 apply a damping force to the damping member 400, so that the damping member 400 provides the damping force during the rotation of the swing arm, ensuring that the swing arm assembly 200 can hover at a certain angle, avoiding the eccentricity problem caused by the assembly of the spring and the spring deformation, and being beneficial to improving the flatness of the hinge mechanism.

[0022] In an alternative embodiment, the damping member 400 is an elastic structure. The damping member 400 is provided with a damping groove 401. The sliding member 500 extends into the damping groove 401 and can slide along the damping groove 401. The sliding member 500 is in extrusion fit with the groove wall surface of the damping groove 401. At this time, the direction in which the groove wall surface of the damping groove 401 applies a damping force to the sliding member 500 intersects with the sliding direction of the sliding member 500. In this way, during the sliding of the sliding member 500, the sliding member 500 constantly squeezes the groove wall surface of the damping groove 401 to cause elastic deformation of the damping member 400. The elastic force generated by the damping member 400 is the damping force, and the elastic force hinders the sliding of the sliding member 500 along the damping groove 401 to ensure that the position of the sliding member 500 relative to the damping member 400 is fixed when the sliding member 500 is not affected by the acting force of the eccentric rotating member 300.

[0023] Adopting this embodiment, no matter where the sliding member 500 slides to, the groove wall surface of the damping groove 401 is in extrusion fit with the sliding member 500, and the sliding member 500 constantly bears the damping force. At the same time, the swing arm assembly 200 constantly bears the damping force, which is beneficial to the swing arm assembly 200 hovering at a certain angle. Moreover, the damping force borne by the sliding member 500 during the sliding process is relatively uniform, and the damping force borne by the swing arm assembly 200 is also relatively uniform, which is more beneficial to the stable hovering of the swing arm assembly 200.

[0024] Of course, in other embodiments, the sliding member 500 may not be in extrusion fit with the groove wall surface of the damping groove 401. Optionally, the damping member 400 may include a damping structure located in the damping groove 401. The damping structure may be, but is not limited to, an elastic member. During the sliding of the sliding member 500 along the damping groove 401, the sliding member 500 is directly in damping cooperation with the damping structure, that is, the direction in which the damping structure applies a damping force to the sliding member 500 is parallel to the sliding direction of the sliding member 500.

[0025] In an alternative embodiment, the damping member 400 is a block structure, and the damping groove 401 is directly formed by opening a sliding groove on the damping member 400. The sliding member 500 is arranged in the sliding groove.

[0026] In another embodiment, refer to Figure 4and Figure 5 As shown in Figure 5 , the hinge base 100 is provided with a limit chute 110. The damping member 400 is a damping sheet, and the damping sheet is attached to the groove side wall of the limit chute 110. Optionally, the damping sheet and the groove side wall of the limit chute 110 can be attached by bonding or other means; the damping sheet and the limit chute 110 together form a damping groove 401. Specifically, the damping sheet and the groove bottom wall of the limit chute 110 form the damping groove 401, and the limit chute 110 has the same structure as the damping groove 401. The sliding member 500 can squeeze the damping sheet.

[0027] In this embodiment, the damping member 400 uses a damping sheet, and the hinge base 100 is provided with a limit chute 110 to provide a basis for forming the damping groove 401. The damping member 400 does not need to be provided with a separate damping groove 401, which is beneficial to simplifying the structure of the damping member 400; moreover, during the process of the sliding member 500 squeezing the damping sheet, the hinge base 100 provides support for the damping sheet to avoid excessive deformation of the damping sheet. In a further embodiment, referring to Figure 5 As shown in Figure 5 , the limit chute 110 includes opposite first groove side walls 110a and second groove side walls 110b. The number of damping sheets is at least two, including a first damping sheet 410 and a second damping sheet 420. The first damping sheet 410 is attached to the first groove side wall 110a, and the second damping sheet 420 is attached to the second groove side wall 110b. A damping groove 401 is formed between the first damping sheet 410 and the second damping sheet 420. Specifically, the first damping sheet 410, the second damping sheet 420, and the groove bottom wall of the absorption chute together form the damping groove 401. The sliding member 500 can squeeze the first damping sheet 410 and the second damping sheet 420 simultaneously.

[0028] Optionally, the first damping sheet 410 and the second damping sheet 420 have the same shape and equal laying areas, and both between the first damping sheet 410 and the first groove side wall 110a and between the second damping sheet 420 and the second groove side wall 110b can be attached by bonding.

[0029] In this embodiment, damping sheets are attached to both opposite groove side walls of the limit chute 110, and the number of damping sheets increases. During the process of the sliding member 500 sliding along the damping groove 401, the sliding member 500 squeezes the first damping sheet 410 and the second damping sheet 420 simultaneously. Then, the first damping sheet 410 and the second damping sheet 420 simultaneously generate elastic deformation, which is beneficial to increasing the damping force and more beneficial to the swing arm assembly 200 to stably hover at a certain angle.

[0030] Of course, in other embodiments, the damping member 400 may only include the above-mentioned first damping sheet 410 or second damping sheet 420, that is, a damping sheet is attached to one of the groove side walls of the limit chute 110.

[0031] In the solution of this application, reference is made to Figure 5 As shown, the damping groove 401 includes a first damping groove 401a and a second damping groove 401b that are connected and communicate with each other. The extending direction of the first damping groove 401a intersects with the extending direction of the second damping groove 401b. Optionally, the extending direction of the first damping groove 401a and the extending direction of the second damping groove 401b may be perpendicular to each other. Of course, the extending direction of the first damping groove 401a and the extending direction of the second damping groove 401b may also intersect but not be perpendicular; except for the different extending directions, the extending lengths, groove widths, and groove depths of the first damping groove 401a and the second damping groove 401b may be equal.

[0032] The number of the sliding members 500 is at least two, including a first sliding member 510 and a second sliding member 520. The first sliding member 510 and the second sliding member 520 are respectively rotatably connected to the eccentric rotating member 300. Optionally, reference is made to Figure 9 and Figure 10 As shown, both the first sliding member 510 and the second sliding member 520 include a slider 501 and a second rotating shaft 502. The eccentric rotating member 300 is provided with at least two shaft holes 320. The second rotating shafts 502 are in one-to-one rotational cooperation with the shaft holes 320. The axis of each second rotating shaft 502 is the third axis S3; the structures of the first sliding member 510 and the second sliding member 520 are the same and their sizes are equal.

[0033] Moreover, the first sliding member 510 and the second sliding member 520 are respectively located on both sides of the second axis S2. The first sliding member 510 is in sliding cooperation with the first damping groove 401a, and the first sliding member 510 can squeeze the groove wall surface of the first damping groove 401a. The second sliding member 520 is in sliding cooperation with the second damping groove 401b, and the second sliding member 520 can squeeze the groove wall surface of the second damping groove 401b. During the process of the swing arm assembly 200 driving the eccentric rotating member 300 to rotate relative to the hinge base 100, the first sliding member 510 slides along the first damping groove 401a, and the second sliding member 520 slides along the second damping groove 401b.

[0034] By adopting this embodiment, the first sliding member 510 and the second sliding member 520 slide simultaneously, and they can simultaneously squeeze different parts of the damper 400, which is beneficial to increasing the extrusion area, further increasing the damping force, and is more beneficial for the swing arm assembly 200 to hover. At the same time, it is also beneficial to improve the sliding stability.

[0035] Optionally, the limit chute 110 includes a first chute 111 and a second chute 112 that are connected and communicate with each other. The first chute 111 has the same extending direction as the extending direction of the first damping groove 401a, and the second chute 112 has the same extending direction as the extending direction of the second damping groove 401b. A first damping sheet 410 is attached to the first groove side wall 110a of the first chute 111 and the first groove side wall 110a of the second chute 112, and a second damping sheet 420 is attached to the second groove side wall 110b of the first chute 111 and the second groove side wall 110b of the second chute 112. Thus, during the sliding process of the first sliding member 510 and the second sliding member 520, both of them simultaneously press the first damping sheet 410 and the second damping sheet 420.

[0036] Of course, in other embodiments, the damping groove 401 may not be configured to include the structure of the above-mentioned first damping groove 401a and second damping groove 401b. The damping groove 401 may be designed to have a structure with an extending path the same as the rotation trajectory of the eccentric rotating member 300 to ensure the smooth rotation of the eccentric rotating member 300 relative to the swing arm assembly 200.

[0037] In this embodiment, the process of the hinge mechanism switching from the folded state to the unfolded state is referred to Figures 11 - 19 as shown. The structure of the hinge mechanism in the folded state is referred to Figure 11 as shown. The first rotation direction A is Figure 11 the direction of the arrow in Figure 12 shown. At this time, the position of the eccentric rotating member 300 is referred to Figure 12 as shown. The second rotation direction B is Figure 13 the direction of the arrow in Figure 14 shown. When the hinge mechanism is unfolded to 100°, the structure of the hinge mechanism is referred to Figure 15 as shown. The position of the eccentric rotating member 300 is referred to Figure 16 as shown. The positions of the first sliding member 510 and the second sliding member 520 are referred to Figure 17 as shown. When the hinge mechanism is in the unfolded state, the structure of the hinge mechanism is referred to Figure 18 as shown. The position of the eccentric rotating member 300 is referred to Figure 19 as shown.

[0038] The process of the hinge mechanism switching from the unfolded state to the folded state is referred to Figures 20 - 28 as shown. The structure of the hinge mechanism in the unfolded state is referred to Figure 20 as shown. The first rotation direction A is Figure 20 the direction of the arrow in Figure 21 shown. At this time, the position of the eccentric rotating member 300 is referred to Figure 21In the direction indicated by the arrow, the sliding directions of the first sliding member 510 and the second sliding member 520 are respectively referred to Figure 22 In the direction indicated by the arrow, when the hinge mechanism is folded to 100°, the structure of the hinge mechanism is referred to Figure 23 as shown, the position of the eccentric rotating member 300 is referred to Figure 24 as shown, the positions of the first sliding member 510 and the second sliding member 520 are referred to Figure 25 as shown, when the hinge mechanism is in the folded state, the structure of the hinge mechanism is referred to Figure 26 as shown, the position of the eccentric rotating member 300 is referred to Figure 27 as shown, the positions of the first sliding member 510 and the second sliding member 520 are referred to Figure 28 as shown.

[0039] In an alternative embodiment, the number of the damping assemblies S is one, and one end of the swing arm assembly 200 is provided with the damping assembly S along the direction of the first axis S1.

[0040] In another embodiment, the number of the damping assemblies S is at least two, and at least one damping assembly S is respectively provided at both ends of the swing arm assembly 200 along the direction of the first axis S1. Optionally, the hinge assembly includes a first swing arm 201 and a second swing arm 202, and the first swing arm 201 and the second swing arm 202 are respectively located on both sides of the hinge base 100. It may be that damping assemblies S are provided at both ends of the first swing arm 201, or damping assemblies S are provided at both ends of the second swing arm 202.

[0041] Adopting this embodiment, damping assemblies S are provided at both ends of the swing arm assembly 200, and the number of the damping assemblies S increases. Then, during the rotation of the swing arm assembly 200 relative to the hinge base 100, at least two damping assemblies S simultaneously apply damping forces to the swing arm assembly 200, which is beneficial to increasing the damping force, and both ends of the swing arm assembly 200 bear the damping force simultaneously, which is more beneficial to the overall stable hovering of the swing arm assembly 200 at a certain angle.

[0042] In a further embodiment, damping assemblies S are provided at the ends of both the first swing arm 201 and the second swing arm 202 along the direction of the first axis S1. That is to say, damping assemblies S are provided at both ends of the first swing arm 201 and both ends of the second swing arm 202.

[0043] Adopting this embodiment, the number of the damping assemblies S further increases, which is beneficial to further increasing the damping force. Moreover, both ends of the first swing arm 201 and both ends of the second swing arm 202 bear the damping force, and both ends of the first swing arm 201 and both ends of the second swing arm 202 bear the damping force simultaneously, which is beneficial to the stable hovering of both the first swing arm 201 and the second swing arm 202 at a certain angle and improves the synchronization of the hinge mechanism.

[0044] In an alternative embodiment, the first axis S1, the second axis S2, and the third axis S3 are parallel to each other. That is to say, the axis about which the swing arm assembly 200 rotates relative to the hinge base 100, the axis about which the eccentric rotating member 300 rotates relative to the swing arm assembly 200, and the axis about which the sliding member 500 rotates relative to the eccentric rotating member 300 are all parallel.

[0045] With this embodiment, the axes of rotation of the swing arm assembly 200, the eccentric rotating member 300, and the sliding member 500 are all parallel. Then, during the rotation of the swing arm assembly 200 relative to the hinge base 100, the swing arm assembly 200 can smoothly drive the sliding member 500 to slide relative to the hinge base 100 through the eccentric rotating member 300, avoiding motion jamming and also facilitating the smooth rotation of the swing arm assembly 200 relative to the hinge base 100.

[0046] Of course, in other embodiments, any two of the first axis S1, the second axis S2, and the third axis S3 may intersect but not be parallel, and the included angle between any two of them is an acute angle.

[0047] In the solution of the present application, referring to Figure 14 As shown, the swing arm assembly 200 includes a first swing arm 201 and a second swing arm 202. The first swing arm 201 and the second swing arm 202 are respectively located on both sides of the hinge base 100. A plurality of first engaging teeth 201a are arranged at intervals along the rotation direction of the first swing arm 201, and a plurality of second engaging teeth 202a are arranged at intervals along the rotation direction of the second swing arm 202. The hinge mechanism further includes a first gear 610 and a second gear 620. The first gear 610 and the second gear 620 are both located between the first swing arm 201 and the second swing arm 202. The first engaging teeth 201a, the first gear 610, the second gear 620, and the second engaging teeth 202a are engaged in sequence.

[0048] Optionally, referring to Figure 7As shown, the hinge base 100 includes a first base body 101 and a second base body 102. The first base body 101 and the second base body 102 are arranged at intervals in the direction of the first axis S1. A limiting sliding groove 110 is provided on the side of the first base body 101 facing the second base body 102, and a limiting sliding groove 110 is also provided on the side of the second base body 102 facing the first base body 101. A first damping piece 410 and a second damping piece 420 are provided in each limiting sliding groove 110. The first swing arm 201 and the second swing arm 202 are both installed between the first base body 101 and the second base body 102. The first gear 610 and the second gear 620 are also located between the first base body 101 and the second base body 102. Further optionally, a rotational fit can be achieved between the first end of the first gear 610 and the first base body 101, between the second end of the first gear 610 and the second base body 102, between the first end of the second gear 620 and the first base body 101, and between the second end of the second gear 620 and the second base body 102 through a cylindrical groove and a cylindrical protrusion.

[0049] With this embodiment, the first swing arm 201 and the second swing arm 202 achieve synchronous rotation through the first gear 610 and the second gear 620, ensuring that the rotation angle of the first swing arm 201 is equal to the rotation angle of the second swing arm 202, which is beneficial to improving the synchronous performance of the first swing arm 201 and the second swing arm 202.

[0050] Of course, in other embodiments, the first swing arm 201 and the second swing arm 202 can also achieve synchronous rotation through other structures other than tooth meshing.

[0051] In an alternative embodiment, referring to Figure 1 and Figure 2 As shown, the hinge mechanism further includes a support member 710, a frame bracket 720, and a connecting plate 730. Among them, the hinge base 100 is arranged on the support member 710. The number of frame brackets 720 is multiple. The first swing arm 201 and the second swing arm 202 are respectively connected to a frame bracket 720. The first swing arm 201 and the second swing arm 202 are respectively slidably connected to the corresponding frame bracket 720. The number of connecting plates 730 is also multiple. Two of the connecting plates 730 are respectively located on both sides of the hinge base 100. The connecting plates 730 are respectively connected to multiple frame brackets 720 on the same side of the hinge base 100, and the connecting plates 730 are connected to the device main body of the electronic device.

[0052] Optionally, the hinge assembly disclosed in the embodiments of the present application refers to a synchronous swing arm. The hinge mechanism may further include a virtual swing arm assembly 740 and a virtual swing arm bracket 750. The virtual swing arm bracket 750 is disposed on the support member 710. The virtual swing arm assembly 740 includes a third swing arm and a fourth swing arm. The third swing arm and the fourth swing arm are respectively located on both sides of the hinge base 100, and the third swing arm and the fourth swing arm are respectively rotatably connected to the corresponding virtual swing arm bracket 750.

[0053] Based on the hinge mechanism disclosed in the present application, embodiments of the present application further disclose an electronic device. Referring to Figure 29 As shown, the electronic device includes a first device body 810, a second device body 820, and the hinge mechanism in the above embodiments. The first device body 810 is connected to the second device body 820 through the hinge mechanism. During the relative rotation of the first device body 810 and the second device body 820, the electronic device switches between an unfolded state and a folded state.

[0054] Optionally, the first device body 810 is connected to the connecting plate 730 located on the first side of the hinge base 100, and the second device body 820 is connected to the connecting plate 730 located on the second side of the hinge base 100. In this way, during the relative rotation of the first device body 810 and the second device body 820, the first device body 810 and the second device body 820 respectively drive the first swing arm 201 and the second swing arm 202 to rotate relative to the hinge base 100 through the corresponding connecting plate 730 and the frame bracket 720.

[0055] By adopting this embodiment, the spring and the moving cam of the hinge mechanism of the electronic device are cancelled. During the rotation of the swing arm assembly 200, the eccentric rotating member 300 and the sliding member 500 apply a damping force to the damping member 400, so that the damping member 400 provides the damping force during the rotation of the swing arm, ensuring that the swing arm assembly 200 can hover at a certain angle, avoiding the eccentricity problem caused by the assembly of the spring and the spring deformation, and being beneficial to improving the flatness of the hinge mechanism.

[0056] The embodiments of the present application have been described above with reference to the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A hinge mechanism, characterized in that, It includes a hinge base (100), a swing arm assembly (200) and a damping assembly (S). The swing arm assembly (200) is rotationally connected to the hinge base (100) around a first axis (S1) through a synchronous shaft. The damping assembly (S) is arranged between the hinge base (100) and the swing arm assembly (200). The damping assembly (S) includes an eccentric rotating member (300), a sliding member (500) and a damping member (400). The eccentric rotating member (300) is rotationally connected to the swing arm assembly (200) around a second axis (S2). The sliding member (500) is rotationally connected to the eccentric rotating member (300) around a third axis (S3). The damping member (400) is arranged on the hinge base (100), and the damping member (400) is in sliding fit with the sliding member (500). When the swing arm assembly (200) drives the eccentric rotating member (300) to rotate relative to the hinge base (100), the sliding member (500) slides relative to the damping member (400), and the sliding member (500) is in damping cooperation with the damping member (400). The eccentric rotating member (300) rotates relative to the swing arm assembly (200). Wherein, the sliding direction of the sliding member (500) intersects with the direction where the first axis (S1) is located.

2. The hinge mechanism according to claim 1, characterized in that, The damping member (400) is an elastic structure. The damping member (400) is provided with a damping groove (401). The sliding member (500) extends into the damping groove (401) and can slide along the damping groove (401). The sliding member (500) is in extrusion fit with the groove wall surface of the damping groove (401).

3. The hinge mechanism according to claim 2, wherein The hinge base (100) is provided with a limiting sliding groove (110). The damping member (400) is a damping sheet. The damping sheet is attached to the groove side wall of the limiting sliding groove. The damping sheet and the limiting sliding groove (110) together form the damping groove (401). The sliding member (500) can extrude the damping sheet.

4. The hinge mechanism according to claim 3, wherein The limiting sliding groove (110) includes opposite first groove side walls (110a) and second groove side walls (110b). The number of damping sheets is at least two, including a first damping sheet (410) and a second damping sheet (420). The first damping sheet (410) is attached to the first groove side wall (110a), and the second damping sheet (420) is attached to the second groove side wall (110b). A damping groove (401) is formed between the first damping sheet (410) and the second damping sheet (420). The sliding member (500) can simultaneously extrude the first damping sheet (410) and the second damping sheet (420).

5. The hinge mechanism according to claim 2, wherein The damping groove (401) includes a first damping groove (401a) and a second damping groove (401b) that are connected and communicate with each other. The extending direction of the first damping groove (401a) intersects with the extending direction of the second damping groove (401b). The number of the sliding members (500) is at least two, including a first sliding member (510) and a second sliding member (520). The first sliding member (510) and the second sliding member (520) are respectively located on both sides of the second axis (S2). The first sliding member (510) is in sliding fit with the first damping groove (401a), and the first sliding member (510) can squeeze the groove wall surface of the first damping groove (401a). The second sliding member (520) is in sliding fit with the second damping groove (401b), and the second sliding member (520) can squeeze the groove wall surface of the second damping groove (401b).

6. The hinge mechanism according to claim 1, wherein The number of the damping assemblies (S) is at least two. Along the direction of the first axis (S1), at least one damping assembly (S) is respectively provided at both ends of the swing arm assembly (200).

7. The hinge mechanism according to claim 6, wherein, The swing arm assembly (200) includes a first swing arm (201) and a second swing arm (202). The first swing arm (201) and the second swing arm (202) are respectively located on both sides of the hinge base (100). Along the direction of the first axis (S1), damping assemblies (S) are provided at the ends of the first swing arm (201) and the second swing arm (202).

8. The hinge mechanism according to claim 1, wherein The first axis (S1), the second axis (S2), and the third axis (S3) are respectively parallel to each other.

9. The hinge mechanism according to claim 1, characterized in that, The swing arm assembly (200) includes a first swing arm (201) and a second swing arm (202). The first swing arm (201) and the second swing arm (202) are respectively located on both sides of the hinge base (100). A plurality of first engaging teeth (201a) are arranged at intervals along the rotation direction of the first swing arm (201), and a plurality of second engaging teeth (202a) are arranged at intervals along the rotation direction of the second swing arm (202). The hinge mechanism further includes a first gear (610) and a second gear (620). The first gear (610) and the second gear (620) are both located between the first swing arm (201) and the second swing arm (202). The first engaging teeth (201a), the first gear (610), the second gear (620), and the second engaging teeth (202a) are engaged in sequence.

10. An electronic device, characterized in that, It includes a first device main body (810), a second device main body (820), and the hinge mechanism according to any one of claims 1-9. The first device main body (810) is connected to the second device main body (820) through the hinge mechanism; During the relative rotation of the first device main body (810) and the second device main body (820), the electronic device switches between the unfolded state and the folded state.

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