Pivot device and electronic device using same
By combining the base, swing arm, fixed seat and torque module, the torque module of the foldable electronic device is enhanced, solving the problem of insufficient torque under thin design, and realizing stable opening and closing and smooth operation of the plate.
Patent Information
- Application Number
- CN202520354156.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-03-03
AI Technical Summary
In existing foldable electronic devices, the torque module's ability to generate and control torque is insufficient due to the thinning design of the pivot, making it unable to effectively support and maintain the opening and closing angle of the panel.
The design incorporates a combination of a base, a swing arm, a fixed seat, and a torque module, including a linkage component, a connecting rod, a cam, an elastic component, and a rotating shaft. The torque module is enhanced through the meshing of gears and idlers and the cooperation of elastic elements.
The torque module's torque generation and control capabilities have been improved, ensuring stable expansion and contraction of the plate and providing a smoother opening and closing effect.
Smart Images
Figure CN223635126U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a hinge and electronic device using the same, in particular to a hinge with a torsion module and electronic device using the same. BACKGROUND
[0002] A conventional foldable electronic device includes a hinge and two plate bodies. The hinge is connected to the two plate bodies respectively, so that the two plate bodies can be unfolded and folded. The hinge is provided with a torsion module for generating and controlling torsion to support and maintain the opening angle of the two plate bodies and provide damping effect to make the opening and closing of the two plate bodies smooth. However, in order to facilitate carrying, the foldable electronic device is designed to be thinner and thinner, so that the thickness requirement of the hinge is also thinner and thinner, resulting in that the existing torsion module is insufficient in generating and controlling torsion. SUMMARY
[0003] The utility model aims at providing a hinge and electronic device using the same, which can improve the ability of the torsion module to generate and control torsion.
[0004] To achieve the above-mentioned purpose, the utility model provides a hinge, which includes a base, two swing arms, two fixing seats and a torsion module. The base has two opposite first side edges and two opposite second side edges. One end of each swing arm is rotatably connected to the corresponding first side edge, and the other end of each swing arm is rotatably connected to the corresponding fixing seat. Each fixing seat is provided with a first recess, and two opposite side walls of the first recess are respectively provided with two first linear sliding parts. The torsion module is arranged on the corresponding second side edge, and the torsion module includes a linkage assembly, two first connecting rods, two second connecting rods, a first cam, a second cam and an elastic assembly. The two first connecting rods are rotatably connected to the linkage assembly and rotate in opposite directions at the same time. The first concave-convex cam part on one side of each first connecting rod is matched with the corresponding second concave-convex cam part on one side of the first cam, the third concave-convex cam part on one side of each second connecting rod is matched with the corresponding fourth concave-convex cam part on the other side of the first cam, the fifth concave-convex cam part on the other side of each second connecting rod is matched with the corresponding sixth concave-convex cam part on one side of the second cam, and the other side of the second cam is in abutment with the elastic assembly. The side of each first connecting rod and the corresponding second connecting rod away from each other is respectively provided with two second linear sliding parts, and each second linear sliding part is slidably connected to the corresponding first linear sliding part.
[0005] In an embodiment, each first side edge is provided with a space for giving way, and two opposite side walls of the space for giving way are respectively provided with two first arc-shaped sliding parts. One end of each swing arm is provided with a first protrusion, two opposite side edges of the first protrusion are respectively provided with two second arc-shaped sliding parts, and the two second arc-shaped sliding parts are slidably connected to the corresponding two first arc-shaped sliding parts respectively.
[0006] In an embodiment, the other end of each swing arm is further provided with a second protrusion, and two opposite sides of the second protrusion are respectively provided with two third arc-shaped sliding parts.
[0007] In an embodiment, each fixed seat comprises a first seat body and a second seat body. The first seat body is provided with a first recess. The second seat body is provided with a second recess.
[0008] In an embodiment, the linkage assembly comprises two gears and a plurality of idlers. Each gear is fixedly connected to a corresponding first connecting rod. The two gears are engaged through the idlers, so that the two gears rotate in opposite directions at the same time.
[0009] In an embodiment, the side close to the corresponding second connecting rod of each first connecting rod and the corresponding second connecting rod is respectively provided with a third linear sliding part and a fourth linear sliding part along the direction perpendicular to the second linear sliding part, and the third linear sliding part and the fourth linear sliding part are slidably connected.
[0010] In an embodiment, the elastic assembly comprises two first elastic members. The torsion module further comprises two first rotating shafts and a fixed frame. Each first rotating shaft is sequentially pivoted to the first concave-convex cam part of the corresponding first connecting rod, the second concave-convex cam part and the fourth concave-convex cam part on both sides of the first cam, the third concave-convex cam part and the fifth concave-convex cam part on both sides of the corresponding second connecting rod, the sixth concave-convex cam part on one side of the second cam, the corresponding first elastic member, and the fixed frame.
[0011] In an embodiment, the elastic assembly further comprises a second elastic member. The torsion module further comprises a second rotating shaft. The second rotating shaft is sequentially pivoted to the first cam, the second cam, the second elastic member, and the fixed frame.
[0012] The utility model further provides an electronic device, including preceding hub device and two plate bodies. Two plate bodies are connected to two fixed seats of hub device respectively.
[0013] In order to make the above and other purposes, characteristics and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are taken, and the detailed description is as follows in cooperation with the drawings. DRAWINGS
[0014] Figure 1 It is partial exploded view of electronic device of an embodiment of the utility model.
[0015] Figure 2 It is Figure 1 It is partial exploded view of hub mechanism and two plate bodies of electronic device.
[0016] Figure 3 It is perspective view of hub device of an embodiment of the utility model.
[0017] Figure 4 For Figure 3 The pivot shown in the exploded view of the trajectory module and the torsion module.
[0018] Figure 5 For Figure 4 The exploded view of the trajectory module.
[0019] Figure 6 For Figure 4 The exploded view of the torsion module.
[0020] Figure 7 For Figure 3 The pivot shown in the perspective view of the relative angle of 180 degrees, 90 degrees and 0 degrees.
[0021] Figure 8 For Figure 3 The pivot shown in the side view of the relative angle of 180 degrees, 90 degrees and 0 degrees.
[0022] Figure 8A to Figure 8C The relative angle of 180 degrees, 90 degrees and 0 degrees of the pivot shown in the enlarged view. Figure 8 DETAILED DESCRIPTION
[0023] In the following embodiments, the same or similar reference signs represent the same or similar components. In addition, the directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc. are only the direction of the drawings, therefore, the directional terms used are for illustration, not for limiting the utility model.
[0024] Please refer to Figure 1 And Figure 2 , Figure 1 The partial exploded view of the electronic device of an embodiment of the utility model, Figure 2 Figure 1 The pivot mechanism 100 of the electronic device is shown in a partial exploded view with the two plate bodies 200. The electronic device is a foldable electronic device that includes the pivot mechanism 100, the two plate bodies 200, and the flexible display 300. The pivot mechanism 100 includes two pivots 1, a back cover 2, a support plate 3, and two support plates 4. The two pivots 1 are symmetrically mounted on the inner side of the back cover 2. The support plate 3 is located between the two pivots 1 and is mounted on the inner side of the back cover 2 and is fixed. The two support plates 4 are mounted on both sides of the pivot 1 and will open and close together with the opening and closing of both sides of the pivot 1. Both sides of the pivot 1 are also connected to the two plate bodies 200, so that the two plate bodies 200 can be relatively unfolded and folded. Both sides of the flexible display 300 are fixed on the two support plates 4 and the two plate bodies 200, respectively, and will open and close together with the opening and closing of the two support plates 4 and the two plate bodies 200. However, the present embodiment is not intended to limit the present application; for example, the pivot mechanism 100 can be modified to include three or more pivots 1, or only one pivot 1; for example, the flexible display 300 can be modified to one or more non-flexible displays and be provided on at least one of the two plate bodies 200.
[0025] Please refer to Figure 3 and Figure 4 , Figure 3 is a perspective view of the pivot 1 of an embodiment of the present application, Figure 4 is Figure 3 The pivot 1 shown in the exploded view is divided into a track module M1 and a torsion module M2. The pivot 1 includes the track module M1 and the torsion module M2. The track module M1 includes a base 10, two swing arms 20, and two fixed seats 30, and the track module M1 is responsible for the track and position of the relative unfolding and folding of the two plate bodies 200 of the electronic device. The torsion module M2 includes a linkage assembly 40, two first connecting rods 51, two second connecting rods 52, a first cam 61, a second cam 62, an elastic assembly 70, two first rotating shafts 81, and a fixed frame 90, and the torsion module M2 is responsible for the torsion and simultaneous rotation required for the relative unfolding and folding of the two plate bodies 200.
[0026] Please refer to Figure 4 and Figure 5 , Figure 4 is Figure 3 The pivot 1 shown in the exploded view is divided into a track module M1 and a torsion module M2, Figure 5 is Figure 4The exploded view of the trajectory module M1 is shown. The base 10 has two opposite first side edges 11 and two opposite second side edges 12, each second side edge 12 being adjacent to the two first side edges 11. Each first side edge 11 is provided with a clearance space 13, and the two opposite side walls of the clearance space 13 are respectively provided with two first arc-shaped sliding portions 14. Each swing arm 20 is provided at one end with a first protrusion 21, and the two opposite side edges of the first protrusion 21 are respectively provided with two second arc-shaped sliding portions 22, which are respectively and slidably connected with the corresponding two first arc-shaped sliding portions 14. In this way, one end of each swing arm 20 is rotatably connected with the corresponding first side edge 11 of the base 10, i.e. the two ends of the two swing arms 20 are rotatably mounted on the two first side edges 11 of the base 10 and each rotates around a virtual axis. In the present embodiment, the first arc-shaped sliding portion 14 is an arc-shaped groove, and the second arc-shaped sliding portion 22 is an arc-shaped protruding rib corresponding to the arc-shaped groove; however, the present application is not limited thereto, for example, the first arc-shaped sliding portion 14 and the second arc-shaped sliding portion 22 can be respectively replaced by an arc-shaped protruding rib and an arc-shaped groove corresponding thereto.
[0027] The other end of each swing arm 20 is further provided with a second protrusion 23, and the two opposite side edges of the second protrusion 23 are respectively provided with two third arc-shaped sliding portions 24. Each fixed seat 30 is provided with a second recess 33, and the two opposite side walls of the second recess 33 are respectively provided with two fourth arc-shaped sliding portions 34, which are respectively and slidably connected with the corresponding two third arc-shaped sliding portions 24. In this way, the other end of each swing arm 20 is rotatably connected with the corresponding fixed seat 30, i.e. the two fixed seats 30 are rotatably mounted on the other ends of the two swing arms 20 and each rotates around a virtual axis. In the present embodiment, the third arc-shaped sliding portion 24 is an arc-shaped groove, and the fourth arc-shaped sliding portion 34 is an arc-shaped protruding rib corresponding to the arc-shaped groove; however, the present application is not limited thereto, for example, the third arc-shaped sliding portion 24 and the fourth arc-shaped sliding portion 34 can be respectively replaced by an arc-shaped protruding rib and an arc-shaped groove corresponding thereto.
[0028] Please refer to Figure 4 and Figure 6 , Figure 4 is Figure 3 the exploded view of the hinge 1 shown in the schematic view, Figure 6 is Figure 4 the exploded view of the torsion module M2. The torsion module M2 is arranged on the corresponding second side edge 12 of the base 10; however, the present application is not limited thereto, for example, the hinge 1 can further include another torsion module M2 and be arranged on the other second side edge 12 of the base 10, i.e. the two torsion modules M2 are arranged on the two opposite second side edges 12 of the base 10. The torsion module M2 includes a linkage assembly 40, two first connecting rods 51, two second connecting rods 52, a first cam 61, a second cam 62, an elastic assembly 70, two first rotating shafts 81 and a fixed frame 90.
[0029] The linkage assembly 40 includes two gears 41 and a plurality of idlers 42. Each gear 41 is fixedly connected to a corresponding first link 51. The two gears 41 are engaged by the even number of idlers 42, so that the two gears 41 rotate in opposite directions at the same time. Since each gear 41 is fixedly connected to a corresponding first link 51, the two first links 51 will rotate in opposite directions at the same time, i.e. the two first links 51 are rotatably connected to the linkage assembly 40 and rotate in opposite directions at the same time. When the two first links 51 rotate in opposite directions at the same time, the two second links 52 will be forced to rotate in opposite directions at the same time with the two swing arms 20 through the two fixed seats 30. In the embodiment, the gear 41 is fixedly connected to one side of the first link 51 near one end; but not limited thereto, the gear 41 can be fixedly connected to one end of the first link 51.
[0030] The first concave-convex cam portion 511 on one side of each first link 51 cooperates with the second concave-convex cam portion 611 on one side of the first cam 61, the third concave-convex cam portion 521 on one side of each second link 52 cooperates with the fourth concave-convex cam portion 612 on the other side of the first cam 61, and the fifth concave-convex cam portion 522 on the other side of each second link 52 cooperates with the sixth concave-convex cam portion 621 on one side of the second cam 62. That is, the two first concave-convex cam portions 511 on one side of the two first links 51 respectively cooperate with the two second concave-convex cam portions 611 on one side of the first cam 61, the two fourth concave-convex cam portions 612 on the other side of the first cam 61 respectively cooperate with the two third concave-convex cam portions 521 on one side of the two second links 52, and the fifth concave-convex cam portion 522 on the other side of the two second links 52 respectively cooperate with the two sixth concave-convex cam portions 621 on one side of the second cam 62. The other side of the second cam 62 abuts against the elastic assembly 70.
[0031] Each fixed seat 30 is also provided with a first recess 31, and two opposite side walls of the first recess 31 are respectively provided with two first linear sliding portions 32. One side of each first link 51 away from a corresponding second link 52 is respectively provided with two second linear sliding portions 512 and 523, and each second linear sliding portion 512 or 523 is slidably connected to a corresponding first linear sliding portion 32; that is, one side of the first link 51 away from the second link 52 is provided with the second linear sliding portion 512, one side of the second link 52 away from the first link 51 is provided with the second linear sliding portion 523, and the two second linear sliding portions 512 and 523 are respectively slidably connected to the two first linear sliding portions 32 of the first recess 31, so that the first link 51 and the second link 52 will be located in the first recess 31 and can slide along the direction of the first linear sliding portion 32. In the embodiment, the first linear sliding portion 32 is a linear convex rib, and the second linear sliding portion 512 and 523 are linear grooves corresponding to the linear convex rib; but not limited thereto, for example, the first linear sliding portion 32 and the second linear sliding portion 512 and 523 can be linear grooves and linear convex ribs respectively.
[0032] The side of each first connecting rod 51 close to the corresponding second connecting rod 52 is provided with a third linear sliding part 513 and a fourth linear sliding part 524 along the direction perpendicular to the second linear sliding part 512 or 523, and the third linear sliding part 513 and the fourth linear sliding part 524 are slidably connected; that is, the side of the first connecting rod 51 close to the second connecting rod 52 is provided with the third linear sliding part 513 along the direction perpendicular to the second linear sliding part 512, and the side of the second connecting rod 52 close to the first connecting rod 51 is provided with the fourth linear sliding part 524 along the direction perpendicular to the second linear sliding part 523, so that the first connecting rod 51 and the second connecting rod 52 can also slide along the direction perpendicular to the first linear sliding part 32. In the embodiment, the third linear sliding part 513 is a linear groove, and the fourth linear sliding part 524 is a linear protrusion corresponding to the linear groove; but is not limited thereto, for example, the third linear sliding part 513 and the fourth linear sliding part 524 can be replaced by corresponding linear protrusions and linear grooves respectively. In addition, the third linear sliding part 513 and the fourth linear sliding part 524 use gap fit but the gap between them is small, so that when the first connecting rod 51 and the second connecting rod 52 slide along the direction perpendicular to the first linear sliding part 32 to approach or move away from each other, the corresponding concave-convex cam parts of the first connecting rod 51, the first cam 61, the second connecting rod 52 and the second cam 62 remain on the same axis and do not deflect.
[0033] In the embodiment, in order to facilitate assembly, each fixing seat 30 includes two independent parts of a first seat body 30a and a second seat body 30b. Each first seat body 30a is provided with a first recess 31, and the first linear sliding part 32 in the first recess 31 can be conveniently slid into the second linear sliding part 512 of the corresponding first connecting rod 51 and the second linear sliding part 523 of the second connecting rod 52 in a linear sliding manner respectively. Each second seat body 30b is provided with a second recess 33, and the two fourth arc-shaped sliding parts 34 in the second recess 33 can be conveniently slid into the two third arc-shaped sliding parts 24 of the corresponding swing arm 20 in an arc-shaped sliding manner respectively.
[0034] The two first pivots 81 are pivoted to the fixed frame 90, and the two first pivots 81 and the fixed frame 90 form a frame to support other components of the torsion module M2. In the embodiment, the elastic assembly 70 includes two first elastic members 71, which are compression springs; but is not limited thereto, for example, the first elastic members 71 can be replaced by a plurality of stacked elastic pieces. Each first pivot 81 is provided with a first head 811 and a first recessed ring portion 812 at two ends thereof. The fixed frame 90 includes a first fixed plate 91, a second fixed plate 92, and a buckle plate 93. The gear 41 and the idler gear 42 of the linkage assembly 40 are pivoted to the first fixed plate 91, and each first pivot 81 is pivoted to the corresponding gear 41, which is equivalent to being pivoted to the first fixed plate 91. Each first pivot 81 is sequentially pivoted to the corresponding gear 41, the first concave-convex cam portion 511 of the corresponding first connecting rod 51, the second concave-convex cam portions 611 and 612 on both sides of the first cam 61, the third concave-convex cam portions 521 and 522 on both sides of the second connecting rod 52, the sixth concave-convex cam portion 621 on one side of the second cam 62, the corresponding first elastic member 71, and the second fixed plate 92. The first head 811 at one end of each first pivot 81 can be abutted by the corresponding gear 41, and the other end of each first pivot 81 passes through the second fixed plate 92, and the first recessed ring portion 812 and the buckle plate 93 are buckled to each other.
[0035] In the embodiment, in order to increase the size of the torsion, the elastic assembly 70 can further include a second elastic member 72, which is a compression spring; but is not limited thereto, for example, the second elastic member 72 can be replaced by a plurality of stacked elastic pieces, and for another example, the number of the second elastic member 72 can be two or more. Accordingly, the torsion module M2 further includes a second pivot 82, which is pivoted to the first cam 61, the second cam 62, the second elastic member 72, and the second fixed plate 92. The second pivot 82 is provided with a second head 821 and a second recessed ring portion 822 at two ends thereof. The second head 821 at one end of the second pivot 82 can be abutted by the first cam 61, and the other end of the second pivot 82 passes through the second fixed plate 92, and the second recessed ring portion 822 and the buckle plate 93 are buckled to each other.
[0036] When the first connecting rod 51 and the second connecting rod 52 rotate, the first concave-convex cam portion 511 of the first connecting rod 51 and the second concave-convex cam portion 611 of the first cam 61 are matched to push and extrude each other, the fourth concave-convex cam portion 612 of the first cam 61 and the third concave-convex cam portion 521 of the second connecting rod 52 are matched to push and extrude each other, the fifth concave-convex cam portion 522 of the second connecting rod 52 and the sixth concave-convex cam portion 621 of the second cam 62 are matched to push and extrude each other, and then the second cam 62 and the first elastic member 71 (the second elastic member 72) are pushed and extruded to generate a torsion. The utility model has six groups of concave-convex cam portions to generate a larger torsion, but is not limited to this, for example, more connecting rods and cams can be connected in series. In addition, the third linear sliding portion 513 and the fourth linear sliding portion 524 use gap matching, but the gap between them is small, and the second rotating shaft 82 is pivoted to the first cam 61, the second cam 62 and the fixed frame 90 (the second fixed plate 92), so that when the corresponding concave-convex cam portions of the first connecting rod 51, the first cam 61, the second connecting rod 52 and the second cam 62 are matched to push and extrude each other, they can still remain on the same axis and will not be skewed.
[0037] Please refer to Figure 7 and Figure 8 , Figure 7 for Figure 3 the relative angles of the hub 1 shown in the perspective view are 180 degrees, 90 degrees and 0 degrees, Figure 8 for Figure 3 the relative angles of the hub 1 shown in the side view are 180 degrees, 90 degrees and 0 degrees, and Figure 8A to Figure 8C are respectively Figure 8 enlarged views of the hub with the relative angles of 180 degrees, 90 degrees and 0 degrees. For the sake of clarity, Figure 8 mainly shows the torsion module M2 and mainly shows the first connecting rod 51, the second connecting rod 52 and the corresponding first seat body 30a of the fixed seat 30 on one side. As can be seen from the figure, the first connecting rod 51 and the second connecting rod 52 are partially located in the first recess 31 and can slide in the direction of the first linear sliding portion 32; specifically, the ends of the first connecting rod 51 and the second connecting rod 52 abut against the bottom wall of the first recess 31 at 180 degrees, and are farthest away from the bottom wall of the first recess 31 at 0 degrees. The first connecting rod 51 and the second connecting rod 52 slide in the direction perpendicular to the first linear sliding portion 32; specifically, the side of the first connecting rod 51 and the second connecting rod 52 that is close to each other is farther away at 90 degrees, so that the elastic assembly 70 is extruded more to generate a larger torsion, and is closer at 180 degrees and 0 degrees, so that the elastic assembly 70 is extruded less to generate a smaller torsion.
[0038] Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model, and anyone skilled in the art can make some changes and decorations without departing from the spirit and scope of the utility model, therefore the protection scope of the utility model shall be subject to the definition of the claims.
Claims
1. A hub, characterized by Comprising: a base having two opposite first sides and two opposite second sides; two swing arms, each of the swing arms having one end rotatably connected to a corresponding one of the first sides; two fixed bases, each of the swing arms having the other end rotatably connected to a corresponding one of the fixed bases, each of the fixed bases being provided with a first recess, two opposite side walls of the first recess being respectively provided with two first linear sliding portions; and a torsion module provided on a corresponding one of the second sides, the torsion module comprising a linkage assembly, two first connecting rods, two second connecting rods, a first cam, a second cam, and an elastic assembly, the two first connecting rods being rotatably connected to the linkage assembly and simultaneously rotating in opposite directions, a first concave-convex cam portion on one side of each of the first connecting rods being matched with a corresponding second concave-convex cam portion on one side of the first cam, a third concave-convex cam portion on one side of each of the second connecting rods being matched with a corresponding fourth concave-convex cam portion on the other side of the first cam, a fifth concave-convex cam portion on the other side of each of the second connecting rods being matched with a corresponding sixth concave-convex cam portion on one side of the second cam, the other side of the second cam being in abutment with the elastic assembly, each of the first connecting rods and a corresponding one of the second connecting rods being respectively provided with two second linear sliding portions on a side away from each other, each of the second linear sliding portions being slidably connected to a corresponding one of the first linear sliding portions.
2. The hub of claim 1, wherein: Each of the first sides is provided with a space for giving way, two opposite side walls of the space for giving way being respectively provided with two first arc-shaped sliding portions; each of the swing arms has a first protrusion on one end, two opposite sides of the first protrusion being respectively provided with two second arc-shaped sliding portions, the two second arc-shaped sliding portions being slidably connected to corresponding ones of the two first arc-shaped sliding portions, respectively.
3. The hub of claim 2, wherein: Each of the swing arms is further provided with a second protrusion on the other end, two opposite sides of the second protrusion being respectively provided with two third arc-shaped sliding portions; each of the fixed bases is further provided with a second recess, two opposite side walls of the second recess being respectively provided with two fourth arc-shaped sliding portions, the two fourth arc-shaped sliding portions being slidably connected to corresponding ones of the two third arc-shaped sliding portions, respectively.
4. The hub of claim 3, wherein: Each of the fixed bases comprises a first seat body and a second seat body, the first seat body being provided with the first recess, and the second seat body being provided with the second recess.
5. The hub of claim 1, wherein: The linkage assembly comprises two gears and a plurality of idlers, each of the gears being fixedly connected to a corresponding one of the first connecting rods, the two gears being engaged through the plurality of idlers, so that the two gears simultaneously rotate in opposite directions.
6. The hub of claim 1, wherein: Each of the first connecting rods and a corresponding one of the second connecting rods is respectively provided with a third linear sliding portion and a fourth linear sliding portion on a side close to each other in a direction perpendicular to the second linear sliding portion, the third linear sliding portion and the fourth linear sliding portion being slidably connected.
7. The hub of claim 1, wherein: The elastic assembly comprises two first elastic members, the torsion module further comprising two first rotating shafts and a fixed frame, each of the first rotating shafts being sequentially pivoted to the first concave-convex cam portion of a corresponding one of the first connecting rods, the second concave-convex cam portion and the fourth concave-convex cam portion on two sides of the first cam, the third concave-convex cam portion and the fifth concave-convex cam portion on two sides of a corresponding one of the second connecting rods, the sixth concave-convex cam portion on one side of the second cam, a corresponding one of the first elastic members, and the fixed frame.
8. The hub of claim 7, wherein: The elastic assembly further comprises a second elastic member, and the torsion module further comprises a second rotating shaft, which is sequentially connected with the first cam, the second cam, the second elastic member and the fixed frame.
9. An electronic device, characterized by comprising: the hinge as claimed in any one of claims 1 to 8; and two plate bodies, respectively connected to the two fixed seats of the hinge.