CN221170365U

CN221170365U - Connecting device and electronic equipment

Info

Publication number: CN221170365U
Application number: CN202322939252.8U
Authority: CN
Inventors: 郑英策; 尤德涛
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2023-10-31
Filing date: 2023-10-31
Publication date: 2024-06-18
Anticipated expiration: 2033-10-31

Abstract

The application discloses a connecting device and electronic equipment. The driving component is connected with the rotating shaft component, and the position of the driving component along the axial direction is changed through the change of the rotating angle of the shaft body of the rotating shaft component. The adjusting component is connected with the rotating shaft component, and when the shaft body of the rotating shaft component rotates to a preset angle interval, the adjusting component is connected with the driving component to be matched with the driving component so as to control acting force of the adjusting component relative to the shaft body of the rotating shaft component.

Description

Connecting device and electronic equipment

Technical Field

The present application relates to the field of electronic devices, and in particular, to a connection device and an electronic device.

Background

In an electronic device such as a notebook computer, a connecting device for realizing the rotational connection of two parts of the electronic device is required to provide a certain torsion force in addition to a rotational function so that the electronic device can maintain a use posture. After a period of use, the torsion of the connecting device tends to be attenuated, for example, as the number of times of opening and closing the notebook computer increases, the torsion of the rotating shaft of the connecting device is obviously attenuated compared with the original torsion design value.

The torsion attenuation of the connecting device can affect the normal use of the electronic equipment and shorten the life cycle of the electronic equipment, so how to improve the electronic equipment to overcome the defects is a problem to be solved urgently by those skilled in the art.

Disclosure of utility model

The application provides the following technical scheme:

A connection device, comprising:

A spindle assembly;

The driving assembly is connected with the rotating shaft assembly, and the position of the driving assembly along the axial direction is changed through the change of the rotating angle of the shaft body of the rotating shaft assembly;

The adjusting component is connected with the rotating shaft component, and when the shaft body of the rotating shaft component rotates to a preset angle interval, the adjusting component is connected with the driving component and matched with the driving component to control acting force of the adjusting component relative to the shaft body of the rotating shaft component.

Optionally, in the above connection device, the adjusting assembly includes:

the first bracket body is rotatably connected with the shaft body;

The compression assembly is slidably connected with the shaft body;

the first elastic piece is connected between the compression assembly and the first bracket body;

the rotating piece is rotationally connected with the first bracket body and is provided with a first matching structure for being connected and matched with the driving assembly;

The pressing component is enabled to displace relative to the first bracket body along the axial direction through the rotation of the rotating piece relative to the first bracket body, so that acting force of the first elastic piece can be adjusted.

Optionally, in the above connection device, the pressing assembly has a first thread structure, and the rotating member has a second thread structure adapted to be connected with the first thread structure.

Optionally, in the above connection device, the rotating member includes:

The rod body is rotationally connected with the first bracket body and is parallel to the axial direction of the shaft body;

The first matching structure comprises a plurality of first guide grooves which are formed in the outer circumferential surface of the disc-shaped body and distributed along the circumferential direction of the disc-shaped body, and the extending direction of the first guide grooves is inclined relative to the axial direction of the disc-shaped body.

Optionally, in the above-mentioned connecting device, the outer edge of the disk-shaped body is provided with a plurality of second guide grooves alternately arranged with the first guide grooves in the circumferential direction of the disk-shaped body, and the extending direction of the second guide grooves is inclined with respect to the axial direction of the disk-shaped body and is arranged in a herringbone manner with respect to the adjacent first guide grooves.

Optionally, in the above connection device, the rotating shaft assembly includes:

the second bracket body is rotationally connected with the shaft body;

The sleeve is sleeved on the shaft body and fixedly arranged relative to the shaft body, and a spiral groove is formed in the outer surface of the sleeve;

The drive assembly includes:

The sliding block is slidably arranged on the second bracket body, the sliding direction of the sliding block relative to the second bracket body is parallel to the axial direction of the shaft body, and a convex block which is in sliding fit with the spiral groove is arranged on the outer surface of the sliding block; and one end of the cantilever rod, which is far away from the sliding block, is provided with a cylinder which is used for sliding along the first guide groove to drive the disc-shaped body to rotate.

Optionally, in the above connecting device, the cantilever rod is hinged with the slider, a rotation center line of the cantilever rod rotating relative to the slider is perpendicular to an axial direction of the shaft body, and a second elastic element for resetting the cantilever rod is arranged between the cantilever rod and the slider; one end of the first guide groove, which is far away from the sliding block, is provided with a guide slope connected with the outer peripheral surface of the disc-shaped body.

Optionally, in the above connection device, the first elastic member is a disc spring assembly or a coil spring.

Optionally, in the above connection device, if the shaft body rotating to the preset angle range does not completely rotate through the preset angle range, the driving component is displaced along the axis direction and does not change the torque force that the rotating shaft component can provide after the shaft body leaves the preset angle range.

An electronic device comprising a first body and a second body connected to the first body by a connecting means, the connecting means being as disclosed in any one of the above.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first state of a connection device according to an embodiment of the present application;

FIG. 2 is an exploded view of a connection device provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of the assembly of the slider 201 and the cantilever beam 202 of FIG. 2;

FIG. 4 is a schematic view of the slider 201 of FIG. 3 after being hidden;

fig. 5 is a front view of the disc-shaped body 8 in fig. 2;

FIG. 6 is a schematic view of a second state of the connection device according to an embodiment of the present application;

FIG. 7 is a schematic view illustrating a third state of the connection device according to the embodiment of the present application;

fig. 8 is a schematic view of another construction of the disk-shaped body 8 in fig. 2.

Marked in the figure as:

1. A compression assembly; 2. a nut; 3. a first elastic member; 4. a gasket assembly; 5. a sleeve; 6. a rod body; 71. a first bracket body; 72. a second bracket body; 8. a disk-shaped body; 801. an outer peripheral surface; 802. a first guide groove; 803. a guide slope; 804. a second guide groove; 91. a first connector; 92. a second connector; 101. a first shaft body; 102. a second shaft body; 201. a slide block; 2011. a bump; 202. a cantilever bar; 2021. a column; 203. a hinge shaft; 204. and a second elastic member.

Detailed Description

The application provides a connecting device which allows a user to compensate torsion attenuation through simple operation, thereby being beneficial to avoiding the influence of the torsion attenuation on normal use and achieving the effect of prolonging the service life.

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Referring to fig. 1 to 7, an embodiment of the present application provides a connection device, including a rotating shaft assembly, a driving assembly and an adjusting assembly, where the driving assembly is connected with the rotating shaft assembly, and the position of the driving assembly along the axis direction is changed by changing the rotation angle of the shaft body of the rotating shaft assembly, that is, the rotation movement of the shaft body of the rotating shaft assembly can drive the driving assembly to move along the axis direction of the shaft body; the adjusting component is connected with the rotating shaft component, when the shaft body of the rotating shaft component rotates to a preset angle interval, the adjusting component is connected with the driving component to be matched with the acting force for controlling the adjusting component relative to the shaft body of the rotating shaft component, namely, the preset angle interval is arranged in the range of travel of the rotating motion of the shaft body, and when the shaft body rotates to the preset angle interval, the adjusting component is connected with the driving component to be matched with the driving component, and the acting force of the adjusting component relative to the shaft body can be changed. The force of the adjusting component relative to the shaft body is a force capable of directly or indirectly affecting the torsion of the connecting device, that is, when the force of the adjusting component relative to the shaft body changes, the torsion of the connecting device which resists the rotation of the shaft body changes.

When the notebook computer is used, the connecting device is used for connecting two parts needing to be provided with a rotating function and rotating torsion, for example, the connecting device can be used for connecting a host part and a screen part of the notebook computer, so that the opening and closing of the notebook computer and the torsion in opening and closing movement are realized. The preset angle interval is distributed to an angle position to which the shaft body does not rotate normally in the daily use process, namely, when a user rotates the two parts to each other in daily use, the adjusting assembly and the driving assembly are connected and matched without affecting torsion. When the device is used for a period of time, the torsion provided by the connecting device is attenuated under the influence of factors such as part abrasion, at the moment, a user can mutually rotate the two parts to a specific position, so that the shaft body of the rotating shaft assembly rotates to the preset angle interval, and therefore the adjusting assembly is connected with the driving assembly to be matched with the adjusting assembly, the acting force of the adjusting assembly relative to the shaft body of the rotating shaft assembly is changed, the torsion of the connecting device is finally influenced, and the torsion compensation effect is obtained. For example, in the daily use process of the notebook computer, the opening angle of the host computer part and the screen part is generally 110-120 degrees, so that the maximum opening angle of the host computer part and the screen part can be set to 160 degrees, the angle range of 140-160 degrees is configured to correspond to the preset angle range rotated by the shaft body, when the user daily uses the notebook computer, the shaft body cannot rotate to the preset angle range, after the torque provided by the connecting device is attenuated, the user can recover the torque performance of the connecting device by opening the notebook computer to 160 degrees, so that the influence of the torque attenuation on the subsequent normal use of the notebook computer is avoided, and the service life of the connecting device is prolonged. In a preferred embodiment, the adjustment assembly comprises: a first bracket body 71 rotatably connected to the shaft body; the compression assembly 1 is slidably connected with the shaft body; a first elastic member 3 connected between the pressing assembly 1 and the first bracket body 71; the rotating member is rotatably connected with the first bracket body 71 and has a first engaging structure for engaging with the driving assembly. The pressing assembly 1 is displaced in the axial direction relative to the first bracket body 71 by the rotation of the rotating member relative to the first bracket body 71 for adjusting the urging force of the first elastic member 3. That is, the driving assembly is connected and matched with the rotating member through the first matching structure of the rotating member, the driving assembly moving along the axial direction of the shaft body can enable the rotating member to rotate relative to the first bracket body 71, the rotating member can drive the compressing assembly 1 to displace relative to the first bracket body 71 along the axial direction of the shaft body, and the first elastic member 3 is connected between the compressing assembly 1 and the first bracket body 71, so that the first elastic member 3 deforms due to the movement of the compressing assembly 1, the acting force of the first elastic member 3 changes, and the torsion of the rotating shaft assembly is finally affected. So arranged, the overall structure of the adjusting assembly is relatively compact and requires relatively few parts, so the application takes the structural form as a preferable scheme of the adjusting assembly.

In order to realize that the rotation of the rotating member drives the compressing assembly 1 to move, the compressing assembly 1 can be provided with a first thread structure, and the rotating member is provided with a second thread structure which is connected with the first thread structure in an adapting way. Specifically, the first thread structure can be an external thread, the second thread structure can be an internal thread, the first thread structure can also be an internal thread, and the second thread structure is an external thread.

As shown in fig. 1, 2 and 5, in a preferred embodiment, the rotating member includes: the rod body 6 is rotationally connected with the first bracket body 71, and the rod body 6 is arranged parallel to the axial direction of the shaft body; the disc-shaped body 8 is fixedly connected with the rod body 6, the first matching structure comprises a plurality of first guide grooves 802 which are formed in the outer peripheral surface 801 of the disc-shaped body 8 and distributed along the circumferential direction of the disc-shaped body 8, and the extending direction of the first guide grooves 802 is inclined relative to the axial direction of the disc-shaped body 8. In this embodiment, the rod body 6 is provided with external threads, the compression assembly 1 is provided with a threaded hole, the rod body 6 is in spiral fit with the compression assembly 1, the disc-shaped body 8 is located at one end of the rod body 6 far away from the compression assembly 1, and the first guide groove 802 on the outer peripheral surface 801 of the disc-shaped body 8 is used for being connected and matched with the driving assembly, so that the movement of the driving assembly can drive the disc-shaped body 8 to rotate.

As shown in fig. 1 to 3, in a preferred embodiment, the rotation shaft assembly includes: a second bracket body 72 rotatably connected to the shaft body; the sleeve 5 is sleeved on the shaft body and fixedly arranged relative to the shaft body, and a spiral groove is formed in the outer surface of the sleeve 5. The drive assembly includes: the sliding block 201 is slidably arranged on the second bracket body 72, the sliding direction of the sliding block 201 relative to the second bracket body 72 is parallel to the axial direction of the shaft body, and a convex block 2011 which is in sliding fit with the spiral groove is arranged on the outer surface of the sliding block 201; the cantilever 202 connected to the slider 201, and the end of the cantilever 202 remote from the slider 201 is provided with a cylinder 2021 for sliding along the first guide groove 802 to drive the disk-shaped body 8 to rotate. The sleeve 5 can rotate along with the shaft body relative to the second bracket body 72, when the sleeve 5 rotates, the spiral groove on the outer surface of the sleeve applies a force forming a certain included angle with the axis direction of the shaft body to the convex block 2011 on the outer surface of the sliding block 201, and the component force of the force in the axis direction of the shaft body pushes the sliding block 201 to move. Referring to fig. 3 and 5, as the slider 201 moves, the cylinder 2021 on the cantilever beam 202 moves toward the first guide groove 802 on the outer peripheral surface 801 of the disk-shaped body 8 along arrow a in fig. 5, and after the cylinder 2021 enters the first guide groove 802, a force having an angle with respect to the axial direction of the disk-shaped body 8 (i.e., the broken line in fig. 5) is applied to the disk-shaped body 8, and the force component in the circumferential direction of the disk-shaped body 8 (i.e., the direction of arrow B in fig. 5) urges the disk-shaped body 8 to rotate. As shown in fig. 1, the rod body 6 rotates with the disc-shaped body 8, so that the compression assembly 1 moves toward the first bracket body 71, and the first elastic member 3 is further compressed, so that the torsion of the rotating shaft assembly is lifted, and the previous torsion attenuation is compensated.

As shown in fig. 1, the forward rotation and the reverse rotation of the disc-shaped body 8 cause the movement direction of the pressing assembly 1 to be opposite, so that if the forward rotation of the disc-shaped body 8 causes the pressing assembly 1 to further press the first elastic member 3, the reverse rotation of the disc-shaped body 8 causes the pressing assembly 1 to relax the first elastic member 3. It should be appreciated that in order to achieve torque compensation, it is desirable to avoid the post 2021 on the cantilever beam 202 from sliding again along the first guide groove 802 as the slider 201 moves back. Referring to fig. 3 to 5, in the present embodiment, a cantilever bar 202 is hinged to a slider 201, a rotation center line of the cantilever bar 202 rotating relative to the slider 201 is perpendicular to an axial direction of a shaft body, and a second elastic member 204 for resetting the cantilever bar 202 is provided between the cantilever bar 202 and the slider 201; the end of the first guide groove 802 remote from the slider 201 is provided with a guide slope 803 connected to the outer peripheral surface 801 of the disk-shaped body 8. When the cylinder 2021 on the cantilever bar 202 enters the first guide groove 802 from the left side of the disk-shaped body 8 in the opposite direction of the arrow a in fig. 5, the cylinder 2021 will slide onto the outer peripheral surface 801 of the disk-shaped body 8 along the guide slope 803 and finally slide onto the right side of the disk-shaped body 8 in the axial direction of the disk-shaped body 8 on the outer peripheral surface 801. The second elastic member 204 ensures that the cylinder 2021 can move a small distance in the radial direction of the disk-shaped body 8 after leaving the outer peripheral surface 801 so that the cylinder 2021 can enter the first guide groove 802 when moving in the direction of arrow a in fig. 5. Specifically, the second elastic member 204 may be a torsion spring or a compression spring or an extension spring, and as shown in fig. 3 and 4, the second elastic member 204 is provided as a compression spring, the cantilever bar 202 is hinged to the slider 201 through the hinge shaft 203, and the second elastic member 204 is located at the other side of the hinge shaft 203 opposite to the cylinder 2021.

As shown in fig. 8, in another structural form of the disk-shaped body 8, the outer edge of the disk-shaped body 8 is provided with a plurality of second guide grooves 804 alternately arranged with the first guide grooves 802 in the circumferential direction of the disk-shaped body 8, and the extending direction of the second guide grooves 804 is inclined with respect to the axial direction of the disk-shaped body 8 and is arranged in a herringbone shape with the adjacent first guide grooves 802. After the cylinder 2021 on the cantilever bar 202 enters the first guide groove 802 from the left side of the disk-shaped body 8 in the opposite direction of the arrow a in fig. 8, the cylinder 2021 enters the second guide groove 804 from the intersection of the second guide groove 804 and the first guide groove 802, and generates a thrust force in the direction of the arrow B in fig. 8 during sliding along the second guide groove 804, so that the reciprocation of the slider 201 will cause the disk-shaped body 8 to rotate in the same direction. When the disc-shaped body 8 is provided in the form of the structure shown in fig. 8, the cantilever bar 202 and the slider 201 may be provided in a fixed connection, so that the second elastic member 204 is omitted.

As shown in fig. 4 and 5, in order to facilitate the cylinder 2021 sliding along the guide slope 803 to the outer peripheral surface 801 of the disk-shaped body 8 during the return of the slider 201, the lower end of the cylinder 2021 is generally provided in a hemispherical shape or a spherical shape. In other embodiments, the guiding slope 803 may be omitted, and instead, a chamfer may be provided on the side of the cylinder 2021 near the slider 201 for guiding, so long as the cylinder 2021 can slide along the outer peripheral surface 801 of the disk-shaped body 8 during the return of the slider 201. In addition, in order to further ensure that the cylinder 2021 does not pass the disk-shaped body 8 along the first guide groove 802 during the return of the slider 201, a ratchet mechanism that can restrict the rotation of the rod 6 in one direction may be provided between the rod 6 and the first bracket body 71, so that the disk-shaped body 8 cannot be pushed to rotate after the cylinder 2021 enters the first guide groove 802 during the return of the slider 201. However, this way there is a risk of the user operating the device by mistake, which results in the parts being crushed, and therefore the application preferably makes the connection device satisfy the following conditions: if the shaft body rotating to the preset angle range does not completely rotate through the preset angle range, the driving assembly is displaced along the axis direction, and the torque force which can be provided by the rotating shaft assembly after the shaft body leaves the preset angle range is not changed. For example, in the embodiment illustrated in fig. 1 to 7, the first connector 91 and the second connector 92 can be rotated relatively by 360 ° from an angle of 0 ° (see fig. 1) (see fig. 7), during which, when the first connector 91 and the second connector 92 are rotated relatively to 270 ° (see fig. 6), the cylinder 2021 on the cantilever beam 202 starts to enter the first guide groove 802 on the disc-shaped body 8, and when the first connector 91 and the second connector 92 are rotated from the state illustrated in fig. 6 to the state illustrated in fig. 7, the cylinder 2021 completely passes through the disc-shaped body 8 along the first guide groove 802, and at this time the first connector 91 is rotated in a returning direction with respect to the second connector 92, the cylinder 2021 slides along the guide slope 803 onto the outer circumferential surface 801 of the disc-shaped body 8, so that when the first connector 91 and the second connector 92 return to the rotation range of 0 ° to 270 °, the torsion force of the connection device is improved. If the first connector 91 and the second connector 92 do not fully pass through 270 ° to 360 ° when opened, for example, only up to 280 °, then rotating the first connector 91 in the return direction relative to the second connector 92 returns the cylinder 2021 along the first guide groove 802 and pushes the disc-shaped body 8 to rotate in the opposite direction, so that the torsion of the connection device is not increased when the first connector 91 and the second connector 92 return to the rotation range of 0 ° to 270 °.

As shown in fig. 1 and 2, the present embodiment exemplarily shows a case that the rotation shaft assembly is biaxial, that is, the rotation shaft assembly includes a first shaft body 101 and a second shaft body 102 that are disposed parallel to each other, and the first connecting member 91 and the second connecting member 92 are fixedly connected with the first shaft body 101 and the second shaft body 102, respectively, and are used for connecting two components to be configured with a rotation function, for example, the first connecting member 91 is fixedly connected with a screen portion of a notebook computer, and the second connecting member 92 is fixedly connected with a host portion of the notebook computer. In other embodiments, the rotating shaft assembly may be configured as a single shaft, and the torque compensation function can be implemented as well, for example, the first connecting member 91 is fixedly connected to the screen portion of the notebook computer, and the first support body 71 and the second support body 72 are fixedly connected to the host portion of the notebook computer.

As shown in fig. 1, the first elastic member 3 may be provided as a disc spring assembly or a coil spring, and when the first elastic member 3 is a coil spring, a friction plate may be provided between the first elastic member 3 and the first bracket body 71 to provide torsion force. When the first elastic member 3 is a disc spring assembly, a spring sheet may be disposed between the first elastic member 3 and the first bracket body 71 to provide torsion. To facilitate the arrangement of the disc-shaped bodies 8 of the rotor, the present embodiment uses the spacer assembly 4 to space the first carrier body 71 from the second carrier body 72. In addition, one end of the shaft body can be provided with a nut 2, and the nut 2 is positioned on one side of the compression assembly 1 far away from the first elastic piece 3, so that the function of stabilizing the whole structure can be achieved when the connecting device is assembled.

As shown in fig. 1 and 2, the first shaft body 101 and the second shaft body 102 of the connection device are both provided with a first elastic member 3, and the first elastic member 3 applies a force to a spring piece provided against the first support body 71 along the axial direction of the shaft body, and the spring piece can rotate relative to the first support body 71 along with the shaft body. Under the action of the first elastic member 3, torsion that resists rotation is generated between the elastic piece and the first bracket body 71. When the connection device is applied to a notebook computer, the first elastic member 3 on the first shaft body 101 may be provided to have a smaller radial dimension than the first elastic member 3 on the second shaft body 102 in consideration of the smaller thickness of the screen portion compared to the main body portion. However, the first elastic members 3 on the two shafts may be made of different materials, so that the first elastic members 3 with different radial dimensions have the same or similar elastic coefficients, that is, the softness and hardness of the first elastic members 3 on the two shafts are consistent, so that the biaxial elastic sheet system of the first shaft 101 and the second shaft 102 can realize the equal-proportion locking of the first elastic members 3 of the adjusting assembly through the driving assembly. The compression amount of the first elastic piece 3 along the axis direction of the shaft body is increased every time the first elastic piece is locked, so that the acting force applied to the elastic piece is increased, torsion attenuation caused by friction coefficient reduction of a friction surface and creep of elastic piece materials of the rotating shaft is compensated, the problem of attenuation in a torsion life cycle of the elastic piece framework of the disc spring assembly, which is caused by the fact that the first elastic piece 3 is the elastic piece framework of the disc spring assembly, is solved, the torsion attenuation of the rotating shaft is guaranteed to be at a safe level in the whole life cycle, and screen damage caused by screen falling of a notebook computer in a small-angle opening state is prevented.

The application also provides an electronic device, which comprises a first body and a second body connected with the first body through the connecting device disclosed in any embodiment, and the connecting device disclosed in the embodiment has the technical effects, so the electronic device with the connecting device also has the technical effects, and the description is omitted herein. Specifically, the electronic device may be of various types such as a notebook computer, a display, a mobile phone, and the like.

In the present description, the structures of the parts are described in a progressive manner, and the structure of each part is mainly described as a difference from the existing structure, and the whole and part structures of the connection device, the electronic device can be obtained by combining the structures of the parts.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connection device, comprising:

A spindle assembly;

2. The connection device of claim 1, wherein the adjustment assembly comprises:

the first bracket body is rotatably connected with the shaft body;

The compression assembly is slidably connected with the shaft body;

3. The connection device of claim 2, wherein the compression assembly has a first thread formation and the rotating member has a second thread formation adapted for connection with the first thread formation.

4. The connection device of claim 2, wherein the rotating member comprises:

5. The connection device according to claim 4, wherein the outer edge of the disk-shaped body is provided with a plurality of second guide grooves alternately arranged with the first guide grooves in the circumferential direction of the disk-shaped body, the extending direction of the second guide grooves being inclined with respect to the axial direction of the disk-shaped body and being arranged in a chevron shape with respect to the adjacent first guide grooves.

6. The connection device of claim 4, wherein the spindle assembly comprises:

the second bracket body is rotationally connected with the shaft body;

The drive assembly includes:

7. The connecting device according to claim 6, wherein the cantilever rod is hinged to the slider, a rotation center line of the cantilever rod rotating relative to the slider is perpendicular to an axial direction of the shaft body, and a second elastic member for resetting the cantilever rod is arranged between the cantilever rod and the slider; one end of the first guide groove, which is far away from the sliding block, is provided with a guide slope connected with the outer peripheral surface of the disc-shaped body.

8. The connection device according to any one of claims 2 to 7, wherein the first elastic member is a disc spring assembly or a coil spring.

9. The connection device of claim 8, wherein if the shaft body rotated to the predetermined angular interval does not completely rotate through the predetermined angular interval, the displacement of the driving assembly along the axial direction does not change the torque force provided by the rotating shaft assembly after the shaft body leaves the predetermined angular interval.

10. An electronic device comprising a first body and a second body connected to the first body by a connecting means, the connecting means being as claimed in any one of claims 1 to 9.