Clutch device and electronic device

Abstract

The application relates to the field of electronic equipment, in particular to a clutch device and electronic equipment. The clutch device comprises a shell, a motor shaft, a damping shaft and a power switching device. The shell is fixedly connected with an external object. An axial end of the motor shaft is located outside the shell and is connected with a motor. An axial end of the damping shaft is located outside the shell and is connected with a damping mechanism, and the other axial end of the damping shaft is located inside the shell. The power switching device is located inside the shell and is connected with the other axial end of the motor shaft and the other axial end of the damping shaft, so that the shell can be switched between a first state and a second state. In the first state, the shell can rotate synchronously with the motor shaft, but cannot rotate synchronously with the damping shaft. In the second state, the damping shaft can rotate synchronously with the shell, and the shell cannot rotate synchronously with the motor shaft. The clutch device can realize the free switching of the electric opening and closing and the manual opening and closing of the product.

Description

Technical Field

[0001] This application relates to the field of electronic devices, and in particular to a clutch device and an electronic device. Background Technology

[0002] With the development of artificial intelligence, consumers' demand for intelligent laptops is becoming increasingly strong. Traditional manual-opening laptops require four steps to power on: manually opening the lid, adjusting the screen angle, turning on the power, and waiting for a password or biometric authentication login. This is time-consuming and laborious, and the screen needs to be manually turned off in standby mode, otherwise there is a risk of privacy leakage. Smart-opening laptops solve these problems. Smart-opening laptops have a motorized opening / closing button. Users press the button, and the motor drives the laptop to open and close electrically, making operation convenient.

[0003] However, the intelligent opening and closing of notebook computers needs to address the issues of the inability to power on when the electric opening and closing mechanism fails, and the potential damage to the motor caused by manual intervention during the electric opening and closing process. Summary of the Invention

[0004] An embodiment of this application provides a clutch device that enables free switching between electric and manual opening and closing of a notebook computer.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, this application provides a clutch device, comprising: a housing, a motor shaft, a damping shaft, and a power switching device; the housing is used for fixed connection with an external object (e.g., a screen); one axial end of the motor shaft is located outside the housing and is used for connection with a motor, and the other axial end of the motor shaft is located inside the housing; the extension direction of the damping shaft is consistent with the extension direction of the motor shaft, one axial end of the damping shaft is located outside the housing and is used for connection with a damping mechanism, and the other axial end of the damping shaft is located inside the housing; the power switching device is located inside the housing and is connected to the other axial end of the motor shaft and the other axial end of the damping shaft respectively, so that the housing can switch between a first state and a second state; in the first state, the housing can rotate synchronously with the motor shaft but not synchronously with the damping shaft; in the second state, when the housing is manually rotated, the damping shaft can rotate synchronously with the housing, and the housing does not rotate synchronously with the motor shaft.

[0007] According to the embodiments of this application, the clutch device functions to switch the connection with the motor shaft and the damping shaft according to the force applied to the screen, thereby enabling the switching between electric and manual opening and closing, as well as overload protection for the motor.

[0008] In one possible implementation of the first aspect above, in the first state, the external torque acting on the housing is less than or equal to the torque transmitted to the housing by the motor. The torque transmitted to the housing by the motor enables the housing to rotate synchronously with the motor shaft, but not synchronously with the damping shaft.

[0009] In the second state, the external torque acting on the housing is greater than the torque transmitted from the motor to the housing. The external torque is transmitted to the housing, enabling the damping shaft to rotate synchronously with the housing, while the housing does not rotate synchronously with the motor shaft.

[0010] In one possible implementation of the first aspect above, the power switching device includes: a first connecting part, a second connecting part, a third connecting part, a limiting part, and an elastic support part;

[0011] The first connecting part is connected to the other axial end of the motor shaft and can rotate synchronously with the other axial end of the motor shaft.

[0012] The second connecting part is movably sleeved on the other end of the motor shaft in an axial manner, and is arranged opposite to the first connecting part in the axial direction. The second connecting part is fixedly connected to the inner wall of the housing in the circumferential direction, and is movably connected to the inner wall of the housing in the axial direction.

[0013] Along the axial direction, one axial end of the second connecting part is supported by the elastic support part, and the other axial end abuts against one axial end of the limiting part;

[0014] The limiting part is provided inside the housing in a manner that allows it to move axially;

[0015] The third connection is located radially between the inner wall of the housing and the outer wall of the damping shaft, with the radial direction perpendicular to the axial direction;

[0016] In the first state, the first connecting part and the second connecting part are fixedly connected in the circumferential direction, and the limiting part causes the third connecting part to be in a clearance fit with the inner wall of the housing in the radial direction.

[0017] In the second state, when the housing is manually rotated, the second connecting part moves axially toward the elastic support relative to the first connecting part, the second connecting part is movably connected to the first connecting part in the circumferential direction, and the limiting part moves axially with the second connecting part, so that the third connecting part abuts against the inner wall of the housing and the outer wall of the damping shaft in the radial direction, so that the damping shaft can rotate synchronously with the housing.

[0018] In one possible implementation of the first aspect, the surface of the first connecting part facing the second connecting part is provided with a shallow groove, and the surface of the second connecting part facing the first connecting part is provided with a deep groove. Along the axial direction, the depth of the deep groove is greater than the depth of the shallow groove. The shallow groove and the deep groove form a spherical structure, and the spherical structure contains a first ball.

[0019] In one possible implementation of the first aspect described above, a first additional connecting part and a second additional connecting part are provided between the first connecting part and the second connecting part, and along the axial direction, the first additional connecting part is located between the first connecting part and the second additional connecting part;

[0020] The first additional connecting part is fixedly connected to the inner wall of the housing in the circumferential direction and is movably connected to the inner wall of the housing in the axial direction. The second additional connecting part is sleeved on the motor shaft in a movably axial manner and abuts against the second connecting part in the axial direction.

[0021] Along the axial direction, deep grooves are provided on opposite surfaces of the first additional connecting part, and shallow grooves are provided on the surface of the first connecting part facing the first additional connecting part. Shallow grooves are provided on the surface of the second additional connecting part facing the first additional connecting part. Along the axial direction, the depth of the deep grooves is greater than the depth of the shallow grooves. The deep grooves of the first additional connecting part, together with the shallow grooves of the first connecting part and the additional connecting part, form a spherical structure, and the spherical structure contains the first ball bearing.

[0022] In one possible implementation of the first aspect described above, a second ball bearing is provided between the second additional connecting portion and the second connecting portion to achieve a rolling connection.

[0023] In one possible implementation of the first aspect described above, the second connecting portion is provided with an axial extension portion, and the inner wall of the housing is provided with an axial groove. The axial extension portion engages with the axial groove so that the second connecting portion is fixedly connected to the inner wall of the housing in the circumferential direction and movably connected to the inner wall of the housing in the axial direction.

[0024] In one possible implementation of the first aspect described above, the second connecting portion includes a plurality of axially extending portions that circumferentially surround the first connecting portion.

[0025] In one possible implementation of the first aspect described above, the spherical structure comprises a plurality of structures distributed circumferentially.

[0026] In one possible implementation of the first aspect above, the third connecting part is a rolling element, and the limiting part includes: a first baffle, a second baffle, and a first elastic member;

[0027] Along the axial direction, one end of the first elastic element abuts against the damping shaft or the housing, and the other end abuts against the first baffle.

[0028] The first baffle is movably mounted on the damping shaft in an axial manner, and the rolling element is located between the first baffle and the second baffle in an axial direction.

[0029] The second baffle is movably disposed within the housing in an axial manner and abuts against the second connecting portion in an axial direction;

[0030] In the first state, along the axial direction, the rolling element abuts against the first baffle and the second baffle respectively, and along the radial direction, it has a clearance fit with the inner wall of the housing;

[0031] In the second state, the rolling element abuts against the inner wall of the housing and the outer wall of the damping shaft in the radial direction, respectively, and the first baffle restricts the axial movement of the rolling element.

[0032] In one possible implementation of the first aspect above, the inner wall of the housing is provided with a conical hole section, the other axial end of the damping shaft extends out from the conical hole section, the outer surface of the damping shaft and the inner surface of the conical hole section form a conical wedge structure, and the rolling element is accommodated in the conical wedge structure.

[0033] In the first state, the second baffle is in axial contact with the end face of the conical hole segment;

[0034] In the second state, the second baffle separates from the end face of the conical hole segment along the axial direction.

[0035] In one possible implementation of the first aspect described above, the conical wedge structure comprises a plurality of structures distributed circumferentially.

[0036] In one possible implementation of the first aspect described above, the rolling element is a ball or a cone.

[0037] In one possible implementation of the first aspect described above, the damping shaft has a damping shaft shoulder, and one end of the first elastic element abuts against the damping shaft shoulder.

[0038] In one possible implementation of the first aspect described above, the first elastic element is a disc spring or a spring.

[0039] In one possible implementation of the first aspect above, the inner wall of the housing is provided with a tapered hole section, the other axial end of the damping shaft extends out from the tapered hole section, and the outer surface of the damping shaft and the inner surface of the tapered hole section form a tapered wedge structure.

[0040] The third connecting part is a roller, and the limiting part includes: a third baffle, a fourth baffle, a fifth baffle, a second elastic member, and a third elastic member;

[0041] The third baffle is sleeved on the damping shaft and spaced apart from the conical hole section to form a snap-fit ​​section. Part of the roller is snapped into the snap-fit ​​section, and the other part is accommodated in the conical wedge structure. The roller can move circumferentially along the conical wedge structure.

[0042] The conical hole segment is located between the third baffle and the fourth baffle. The fourth baffle is fixedly connected to the inner wall of the shell in the circumferential direction and is movably connected to the inner wall of the shell in the axial direction.

[0043] The fifth baffle has a top post at one axial end and is fixedly connected to the second connecting part at the other axial end. The top post extends toward the third baffle and protrudes out of the fourth baffle.

[0044] One end of the second elastic member abuts against the fourth baffle, and the other end abuts against the second connecting part or the fifth baffle;

[0045] The third elastic element is located in the conical wedge structure and abuts against another part of the roller in the circumferential direction;

[0046] In the first state, the fourth baffle is axially fitted with the end face of the conical hole segment, the top column extends into the conical wedge structure, and clamps another part of the roller with the third elastic element in the circumferential direction. The third elastic element is squeezed, and the other part of the roller is radially fitted with the inner surface of the conical hole segment.

[0047] In the second state, the fourth baffle separates from the end face of the conical hole section along the axial direction, the top column separates from the other part of the roller along the axial direction, and the third elastic element squeezes the other part of the roller in the circumferential direction so that the other part of the roller abuts against the inner surface of the conical hole section and the outer wall of the damping shaft in the radial direction, respectively.

[0048] In one possible implementation of the first aspect described above, the conical wedge structure comprises a plurality of conical wedges distributed circumferentially, and the rollers comprise a plurality of rollers corresponding one-to-one with the plurality of conical wedge structures.

[0049] In one possible implementation of the first aspect described above, the other axial end of the fifth baffle is fixedly connected to the second connecting portion by a wedge.

[0050] In one possible implementation of the first aspect described above, a first elastic limiting part is further included, which is fixedly connected to one axial end of the housing, one axial end of the motor shaft extends out of the first elastic limiting part, and an elastic abutment is provided between the elastic support part and the first elastic limiting part.

[0051] The elastic stop part can move axially relative to the housing and the motor shaft. One end of the elastic support part is connected to the elastic stop part, and the elastic stop part is in rolling connection with the first elastic limiting part.

[0052] In one possible implementation of the first aspect described above, the resilient abutment is fixedly connected to the inner wall of the housing in the circumferential direction.

[0053] In one possible implementation of the first aspect described above, the first elastic limiting part is a first nut, which is threadedly connected to the outer surface of one axial end of the housing.

[0054] In one possible implementation of the first aspect described above, the motor shaft has a motor shaft shoulder located between the elastic stop portion and the first elastic limit portion. The motor shaft shoulder is provided with a through hole, and a ball is installed in the through hole. The ball in the through hole makes rolling contact with the elastic stop portion and the first elastic limit portion respectively.

[0055] In one possible implementation of the first aspect described above, a second elastic limiting portion is further included, which is fixedly connected to the other axial end of the housing, and one axial end of the damping shaft extends out of the second elastic limiting portion, with the damping shaft shoulder and the second elastic limiting portion being rolledly connected.

[0056] In one possible implementation of the first aspect described above, a second elastic limiting part is further included, which is fixedly connected to the other axial end of the housing, one axial end of the damping shaft extends out of the second elastic limiting part, and the third baffle is rolledly connected to the second elastic limiting part.

[0057] In one possible implementation of the first aspect described above, the second elastic limiting part is a second nut, which is threadedly connected to the outer surface of the other axial end of the housing.

[0058] In a second aspect, this application provides an electronic device comprising: a first object; a second object, the second object and the first object being rotatably connected; and a clutch device as described in any of the first aspects above, wherein a portion of the housing is fixedly connected to the first object, and another portion of the housing is mounted on the second object.

[0059] In one possible implementation of the second aspect described above, the first object is a display screen, and the second object is a host computer. That is, the electronic device is a personal computer. Attached Figure Description

[0060] Figure 1 According to some embodiments of this application, a perspective view of a personal computer in an open state is shown;

[0061] Figure 2 According to some embodiments of this application, a three-dimensional clutch device is shown. Figure 1 ;

[0062] Figure 3 A side view of a clutch device is shown according to some embodiments of this application;

[0063] Figure 4 According to some embodiments of this application, a perspective view of the housing in the clutch device is shown;

[0064] Figure 5 According to some embodiments of this application, a cross-sectional view of the clutch device is shown. Figure 1 ;

[0065] Figure 6 According to some embodiments of this application, a cross-sectional view of the clutch device is shown. Figure 2 ;

[0066] Figure 7 According to some embodiments of this application, a three-dimensional representation of the second connecting portion in a clutch device is shown. Figure 1 ;

[0067] Figure 8 According to some embodiments of this application, a three-dimensional representation of the second connecting portion in a clutch device is shown. Figure 2 ;

[0068] Figure 9A perspective view of a first connecting portion in a clutch device is shown according to some embodiments of this application;

[0069] Figure 10 According to some embodiments of this application, a schematic diagram of the connection between the first connecting part, the second connecting part, and the motor shaft in the clutch device is shown. Figure 1 ;

[0070] Figure 11 According to some embodiments of this application, a schematic diagram of the connection between the first connecting part, the second connecting part, and the motor shaft in the clutch device is shown. Figure 2 ;

[0071] Figure 12 A perspective view of a first baffle in a clutch device is shown according to some embodiments of this application;

[0072] Figure 13 A perspective view of a second baffle in a clutch device is shown according to some embodiments of this application;

[0073] Figure 14 According to some embodiments of this application, a perspective view of a first additional baffle in a clutch device is shown;

[0074] Figure 15 A side view of a clutch device is shown according to some embodiments of this application;

[0075] Figure 16 According to some embodiments of this application, a three-dimensional representation of the damping shaft in a clutch device is shown. Figure 1 ;

[0076] Figure 17 According to some embodiments of this application, a three-dimensional representation of the damping shaft in a clutch device is shown. Figure 2 ;

[0077] Figure 18 According to some embodiments of this application, a cross-sectional view of the clutch device is shown. Figure 3 ;

[0078] Figure 19 According to some embodiments of this application, a three-dimensional representation of the damping shaft in a clutch device is shown. Figure 3 ;

[0079] Figure 20 According to some embodiments of this application, a three-dimensional representation of the damping shaft in a clutch device is shown. Figure 4 ;

[0080] Figure 21 According to some embodiments of this application, a three-dimensional clutch device is shown. Figure 2 ;

[0081] Figure 22According to some embodiments of this application, a cross-sectional view of the clutch device is shown. Figure 4 ;

[0082] Figure 23 An exploded perspective view of a clutch device is shown according to some embodiments of this application;

[0083] Figure 24 According to some embodiments of this application, a three-dimensional representation of a first elastic limiting portion in a clutch device is shown. Figure 1 ;

[0084] Figure 25 According to some embodiments of this application, a three-dimensional representation of a first elastic limiting portion in a clutch device is shown. Figure 2 ;

[0085] Figure 26 According to some embodiments of this application, a perspective view of an elastic stop portion in a clutch device is shown;

[0086] Figure 27 According to some embodiments of this application, a perspective view of the motor shaft in the clutch device is shown. Detailed Implementation

[0087] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0088] This application provides a clutch device that allows for free switching between electric and manual opening and closing of a notebook computer. If the electric opening and closing mechanism fails, the computer can be manually turned on; the motor will not be damaged during manual intervention in the electric opening and closing process.

[0089] The clutch device of this application is applicable to large equipment with transmission and shifting mechanisms (such as automobiles, machine tools, etc.), household appliances that require electric opening and closing (such as refrigerators, microwave ovens, etc.), and electronic devices such as consumer terminals (such as PCs, tablets, mobile phones, etc.).

[0090] For ease of explanation, the following description uses a PC (Personal Computer) as an example. The electronic device of this application will be described below with specific embodiments.

[0091] Figure 1 This paper shows a schematic diagram of the structure of PC1 provided in one embodiment of the present application. Figure 1The illustration shows PC1 in the open state. PC1 includes a host 1a and a screen 1b rotatably connected. When PC1 is in the open state, the angle between the host 1a and the screen 1b is α. For example, the screen 1b can rotate from 0° to 135° relative to the host 1a. When the angle α between the host 1a and the screen 1b is 0°, PC1 is in the closed state. When the angle α between the host 1a and the screen 1b is 135°, PC1 is in its fully open state. The screen 1b can rotate relative to the host 1a from 0° to 135° to a certain angle (e.g., 30°, 60°, 80°, 90°, 120°, etc.) and then hover. "Hovering" means that the screen 1b does not rotate relative to the host 1a. The maximum rotation angle of the screen 1b relative to the host 1a is not limited to 135°; depending on actual rotation requirements, corresponding rotation angles can be set, such as 150°, 180°, etc.

[0092] Continue to refer to Figure 1 The PC1 of this application is equipped with a motor (not shown in the figure), an electric opening / closing button (not shown in the figure), and a clutch device 2. After the user presses the electric opening / closing button, the motor drives the screen 1b to rotate relative to the host 1a, thereby realizing the electric opening and closing of the PC1. The function of the clutch device 2 is to switch between electric and manual opening / closing based on the force applied to the screen 1b, as well as to provide overload protection for the motor. The specific switching process between electric and manual opening / closing will be described in detail later.

[0093] Figure 2 A perspective view of a clutch device 2 provided in one embodiment of this application is shown. Figure 3 A side view of a clutch device 2 provided in one embodiment of this application is shown.

[0094] like Figure 2 and Figure 3 As shown, a clutch device 2 of this application includes: a housing 20, a motor shaft 21, a damping shaft 22, and a power switching device (not shown in the figure).

[0095] The housing 20 is used for fixed connection with the screen 1b. For example, refer to... Figure 3 and Figure 4 The housing 20 is along the axial direction ( Figure 3 and Figure 4 Extending in the X direction, the outer surface of the housing 20 is provided with radial (as shown in the X direction) Figure 3 and Figure 4A protruding connecting portion 201 (shown in the Z direction) is used for fixed connection with the screen 1b, and its radial direction is perpendicular to the axial direction. Exemplarily, the connecting portion 201 is provided with screw holes 2011, and the connecting portion 201 and the screen 1b are connected by screws. This application does not limit the fixed connection method between the housing 20 and the screen 1b to this; any method that can achieve the fixed connection between the housing 20 and the screen 1b is within the protection scope of this application, such as adhesive bonding or welding.

[0096] like Figure 2 and Figure 3 As shown, one axial end 211 of the aforementioned motor shaft 21 is located outside the housing 20 and is used to connect with a motor (not shown in the figure), and the other axial end 212 of the motor shaft 21 (as shown in the figure) Figure 5 (As shown) is located inside housing 20. The motor is used to drive the motor shaft 21 to rotate. Figure 2 The T-direction indicates the rotation direction of the motor shaft 21. The extension direction of the damping shaft 22 ( Figure 2 and Figure 3 (as shown in the X direction) and the extension direction of the motor shaft 21 ( Figure 2 and Figure 3 As shown in the X direction, one axial end 221 of the damping shaft 22 is located outside the housing 20 and is used to connect with the damping mechanism. The other axial end 222 of the damping shaft 22 (as shown in the X direction) is located outside the housing 20. Figure 5 (As shown) is located inside the housing 20. Exemplarily, the motor and damping mechanism described above are both mounted on the main unit 1a.

[0097] The aforementioned power switching device is located inside the housing 20 and is connected to the other axial end 212 of the motor shaft 21 and the other axial end 222 of the damping shaft 22, respectively, so that the housing 20 can switch between a first state (electric state) and a second state (manual state). Figure 5 The image shows housing 20 in its first state (electric state). Figure 6 The housing 20 is shown in the second state (manual state).

[0098] In the first state (electric state), the housing 20 rotates synchronously with the motor shaft 21, but not synchronously with the damping shaft 22. Therefore, when the user presses the electric opening / closing button on the PC1, the motor drives the motor shaft 21 circumferentially (…). Figure 2 When the motor shaft 21 rotates (as shown in the T-direction), the torque of the motor shaft 21 is transmitted to the housing 20, and the housing 20 rotates synchronously with the motor shaft 21. Correspondingly, the screen 1b will rotate with the housing 20. For example, driven by the motor, the screen 1b can rotate relative to the host 1a from 0° to 135° (i.e., electrically open) or from 135° to 0° (i.e., electrically close). That is, in the first state (electric state), the screen 1b is connected to the motor shaft 21, realizing electric opening and closing.

[0099] In the first state (electric state), that is, during the electric opening and closing of PC1, the damping shaft 22 has no damping or little damping. When the screen 1b rotates relative to the host 1a to a certain angle (e.g., 90°), the motor stops rotating, the motor shaft 21 acts as damping, and the screen 1b hovers.

[0100] For example, in the first state (electric state), the user does not rotate the screen 1b, that is, does not apply force to the screen 1b.

[0101] In the second state (manual state), when the housing 20 is manually rotated, the damping shaft 22 rotates synchronously with the housing 20, while the housing 20 does not rotate synchronously with the motor shaft 21. For example, the user actively rotates the screen 1b, or accidentally touches the screen 1b, causing the screen 1b to rotate along with the housing 20; that is, the screen 1b rotates after being subjected to a force applied by the user. When the user manually rotates the screen 1b to achieve manual opening and closing, the rotation of the motor shaft 21 does not drive the housing 20 to rotate. The damping shaft 22 rotates synchronously with the housing 20 in both directions. The damping mechanism provides a damping effect on the damping shaft 22, providing high damping so that the PC1 generates damping during manual opening and closing, causing the screen 1b to hover at a certain angle.

[0102] That is, in the second state (manual state), the screen 1b is connected to the damping shaft 22, enabling manual opening and closing without interfering with the motor shaft 21, i.e., the motor shaft 21 idles. In some possible implementations, an idle sensor can be provided. When the idle sensor detects that the motor shaft 21 is idle, it will send an idle signal, thereby controlling the motor to stop working. This avoids motor damage due to overload and product unusability if the motor is damaged.

[0103] In summary, the function of clutch device 2 is to switch the connection with motor shaft 21 and damping shaft according to the force on screen 1b, realize the switching between electric opening and closing and manual opening and closing, and the overload protection of motor.

[0104] For example, in the first state (electric state), the external torque acting on the housing 20 is less than or equal to the torque transmitted to the housing 20 by the motor. This torque, transmitted from the motor to the housing 20, allows the housing 20 to rotate synchronously with the motor shaft 21, but not synchronously with the damping shaft 22. In the second state (manual state), the external torque acting on the housing 20 is greater than the torque transmitted to the housing 20 by the motor. This external torque, transmitted to the housing 20, allows the damping shaft 22 to rotate synchronously with the housing 20, but the housing 20 does not rotate synchronously with the motor shaft 21.

[0105] The specific structure of the power switching device, as well as the switching process between the first state (electric state) and the second state (manual state), are described in detail below with reference to the accompanying drawings.

[0106] refer to Figure 5 and Figure 6 The power switching device of this application includes: a first connecting part 231, a second connecting part 232, a third connecting part 233, a limiting part, and an elastic support part 234.

[0107] The first connecting portion 231 is connected to the other axial end 212 of the motor shaft 21. Exemplarily, the first connecting portion 231 is movably connected to the other axial end 212 of the motor shaft 21 in an axial manner, and the first connecting portion 231 can rotate synchronously with the other axial end 212 of the motor shaft 21. Exemplarily, a nut 236 is provided at the axial left side of the first connecting portion 231, and the nut 236 is threadedly connected to the other axial end 212 of the motor shaft 21, restricting the axial movement of the first connecting portion 231. In some possible embodiments, the first connecting portion 231 is fixedly connected to the other axial end 212 of the motor shaft 21.

[0108] The second connecting portion 232 is axially movably sleeved on the other axial end 212 of the motor shaft 21, and is axially opposite to the first connecting portion 231. The second connecting portion 232 is circumferentially fixedly connected to the inner wall of the housing 20, and axially movably connected to the inner wall of the housing 20. That is, the second connecting portion 232 can move axially relative to the motor shaft 21, for example, axially relative to the motor shaft 21 to the right (…). Figure 5 (As shown in direction A) The second connecting part 232 can rotate synchronously with the housing 20 in the circumferential direction. At the same time, when the second connecting part 232 moves axially relative to the motor shaft 21, the second connecting part 232 also moves axially relative to the housing 20.

[0109] Along the axial direction, one axial end of the second connecting portion 232 is supported by the elastic support portion 234, and the other axial end abuts against one axial end of the limiting portion. That is, the elastic support portion 234 elastically supports one axial end of the second connecting portion 232, and under the elastic support of the elastic support portion 234, the other axial end of the second connecting portion 232 abuts against one axial end of the limiting portion. When the second connecting portion 232 moves axially relative to the motor, the elastic support portion 234 is compressed.

[0110] The specific type of the elastic support portion 234 described above is not limited; any structure capable of providing elastic force falls within the protection scope of this application. For example, in this application, the elastic support portion 234 is a disc spring. In some possible embodiments, the elastic support portion 234 is a spring.

[0111] The aforementioned limiting portion is provided within the housing 20 in a manner that allows it to move axially. For example, after one axial end of the limiting portion abuts against the other axial end of the second connecting portion 232, the limiting portion can move axially along with the axial movement of the second connecting portion 232. For instance, when the second connecting portion 232 moves axially to the right relative to the motor, the limiting portion also moves axially to the right relative to the housing 20. Alternatively, under the elastic force of the elastic support portion 234, when the second connecting portion 232 moves axially to the left relative to the motor, the limiting portion also moves axially to the left relative to the housing 20.

[0112] The aforementioned third connecting portion 233 is radially ( Figure 5 and Figure 6 (As shown in the Z direction) It is located between the inner wall of the housing 20 and the outer wall of the damping shaft 22, with the radial direction perpendicular to the axial direction.

[0113] In the first state (electric state) described above, the first connecting part 231 and the second connecting part 232 are fixedly connected circumferentially, so that the second connecting part 232 can rotate synchronously with the first connecting part 231 circumferentially. Then, the motor drives the motor shaft 21 to rotate circumferentially, and the motor shaft 21 drives the first connecting part 231 to rotate synchronously circumferentially. The torque of the motor shaft 21 is transmitted to the second connecting part 232 through the first connecting part 231, and then to the housing 20 through the second connecting part 232. The housing 20 rotates synchronously with the motor shaft 21 circumferentially, and correspondingly, the screen 1b rotates with the housing 20. Electric opening and closing is achieved. The structure of the limiting part described above allows the third connecting part 233 to have a clearance fit with the inner wall of the housing 20 radially. That is, the housing 20 and the damping shaft 22 are in a disconnected state; the housing 20 and the damping shaft 22 are not connected together, and the damping shaft 22 has no damping or very little damping.

[0114] In the second state (manual state) described above, when the housing 20 is manually rotated (i.e., when the screen 1b is manually rotated), the second connecting part 232 moves axially toward the elastic support part 234 relative to the first connecting part 231. Figure 5 The axial movement direction of the second connecting part 232 is shown in direction A. At this time, the second connecting part 232 is circumferentially connected to the first connecting part 231 (i.e., the housing 20 and the motor shaft 21 are disconnected). The second connecting part 232 will not rotate synchronously with the first connecting part 231 in the circumferential direction. The torque of the motor shaft 21 cannot be transmitted to the second connecting part 232 through the first connecting part 231, so it will not drive the housing 20 to rotate. Correspondingly, the screen 1b will not rotate synchronously with the motor shaft 21.

[0115] After the aforementioned limiting part moves axially along with the second connecting part 232, the third connecting part 233 abuts against the inner wall of the housing 20 and the outer wall of the damping shaft 22 radially, respectively. For example, the third connecting part 233 is radially press-fitted with the inner wall of the housing 20 and the damping shaft 22, respectively. Thus, the inner wall of the housing 20, the third connecting part 233, and the damping shaft 22 are fixedly connected together. When the housing 20 is manually rotated, the damping shaft 22 can rotate synchronously in both directions circumferentially with the housing 20. When the user manually rotates the screen 1b to achieve manual opening and closing, the damping shaft 22 rotates synchronously in both directions with the housing 20. The damping mechanism provides a damping effect on the damping shaft 22, offering high damping.

[0116] In summary, in the first state (electric state), the first connecting part 231 and the second connecting part 232 are fixedly connected circumferentially, and the housing 20 and the motor shaft 21 are connected together; the third connecting part 233 is in radial clearance fit with the inner wall of the housing 20, and the housing 20 and the damping shaft 22 are in a disconnected state. At this time, the electric opening and closing of PC1 can be realized.

[0117] When the housing 20 is manually rotated, an external force is applied to the screen 1b, and the housing 20 switches from the first state (electric state) to the second state (manual state). In the second state (manual state), the second connecting part 232 is circumferentially connected to the first connecting part 231, and the housing 20 and the motor shaft 21 are disconnected; the third connecting part 233 radially abuts against the inner wall of the housing 20 and the outer wall of the damping shaft 22, respectively, and the housing 20 and the damping shaft 22 are connected together. At this time, the PC1 can be manually opened and closed without damaging the motor, avoiding damage to the motor in case of overload.

[0118] The specific structure for achieving the circumferential fixed connection or movable connection of the first connecting part 231 and the second connecting part 232 will be described below.

[0119] In some possible implementations, refer to Figure 7 and Figure 8 The second connecting portion 232 has a deep groove 2323 on its surface facing the first connecting portion 231; Reference Figure 9 The surface of the first connecting portion 231 facing the second connecting portion 232 has a shallow groove 2312, and along the axial direction, the depth of the deep groove 2323 is deeper than the depth of the shallow groove 2312. (Reference) Figure 10 and combined Figure 5 and Figure 6 As shown, the shallow groove 2312 and the deep groove 2323 form a spherical structure, and the spherical structure contains the first ball 235. Figure 7 and Figure 8 The second connecting portion 232 is shown to have two deep grooves 2323, correspondingly, Figure 9The diagram shows that the first connecting part 231 has two shallow grooves 2312, which correspond one-to-one with two deep grooves 2323, forming two spherical structures (e.g., Figure 10 As shown, each spherical structure contains a first ball bearing 235. However, this application does not limit the number of spherical structures; the appropriate number of spherical structures can be set according to design needs, such as three, four, etc. Multiple spherical structures are distributed at intervals along the circumference.

[0120] In the first state (electric state), the first ball 2353 is in the spherical structure formed by the deep groove 2323 and the shallow groove 2312. The shallow groove 2312 is shallower and the deep groove 2323 is deeper. The first connecting part 231 and the second connecting part 232 are circumferentially fixedly connected by the first ball 235 located in the spherical structure. The housing 20 is connected to the motor shaft 21 and disconnected from the damping shaft 22. The second connecting part 232 rotates synchronously with the motor shaft 21 and will not move axially relative to the motor shaft 21.

[0121] When the torque transmitted from the second connecting part 232 to the first ball 235 is large (for example, when the user rotates the screen 1b), the first ball 235 rotates synchronously with the deep groove 2323 and disengages from the shallow groove 2312, and the clutch device 2 changes from the first state to the second state.

[0122] In the second state (manual state), because the left side of the first connecting part 231 is axially limited, the first connecting part 231 remains stationary. After the first ball 235 rolls on the plane of the first connecting part 231, the second connecting part 232 and the first connecting part 231 are circumferentially connected, and the housing 20 and the motor shaft 21 are disconnected. The first ball 235 will push the second connecting part 232 to move axially to the right relative to the first connecting part 231. Figure 5 As shown in direction A), the elastic support 234 that abuts against the second connecting part 232 will be compressed to the right along the axial direction. As a result, the limiting part that abuts against the second connecting part 232 in the axial direction will also move to the right relative to the housing 20 in the axial direction. The third connecting part 233 abuts against the inner wall of the housing 20 and the outer wall of the damping shaft 22 in the radial direction respectively. The housing 20 and the damping shaft 22 are in a connected state, so that the damping shaft 22 can rotate synchronously in both directions with the housing 20 in the circumferential direction.

[0123] When the first ball 235 rolls relative to the plane of the first connecting part 231 and falls into the shallow groove 2312, the first ball 235 is clamped and connected together by the first connecting part 231 and the second connecting part 232, and the state switches from the second state to the first state.

[0124] For example, the first ball bearing 235 rolls at an angle θ on the plane of the first connecting part 231 that is greater than the opening and closing angle of the screen 1b (θ is 150° in this application, but is not limited to this angle), which can be considered as realizing stepless switching between electric opening and closing and manual opening and closing within the opening and closing angle of the screen 1b.

[0125] Continue to refer to Figure 7 and Figure 8 The body of the second connecting portion 232 described above is provided with a first mounting hole 2321, and the second connecting portion 232 is rotatably fitted onto the motor shaft 21 through the first mounting hole 2321. For example, the first mounting hole 2321 is a circular hole. In the second state, the second connecting portion 232 rotates circumferentially relative to the motor shaft 21 through the first mounting hole 2321.

[0126] In addition, the main body of the second connecting part 232 also includes an axial extension part 2322. The inner wall of the housing 20 is provided with an axial groove (not shown in the figure). The axial extension part 2322 engages with the axial groove, so that the second connecting part 232 is fixedly connected to the inner wall of the housing 20 circumferentially through the axial extension part 2322, and is movably connected to the inner wall of the housing 20 axially. That is, after the axial extension part 2322 engages with the axial groove on the inner wall of the housing 20, the axial extension part 2322 rotates synchronously with the housing 20. When the housing 20 is manually rotated, under the action of the first ball 235, the second connecting part 232 moves axially relative to the axial groove of the housing 20 through the axial extension part 2322.

[0127] For example, the body portion of the second connecting portion 232 is plate-shaped.

[0128] For example, Figure 7 and Figure 8 As shown, the second connecting portion 232 includes three axial extensions 2322, which circumferentially surround the first connecting portion 231. However, this application does not limit the number of axial extensions 2322; in some possible embodiments, the number of axial extensions 2322 may be, for example, one, four, etc.

[0129] Continue to refer to Figure 9 The first connecting portion 231 described above is provided with a second mounting hole 2311. The first connecting portion 231 is sleeved on the motor shaft 21 through the second mounting hole 2311 and is axially movably connected to the motor shaft 21. Exemplarily, the second mounting hole 2311 is an oblong hole. Exemplarily, the first connecting portion 231 is plate-shaped.

[0130] As described above, when the first ball 235 in the spherical structure disengages from the shallow groove 2312, the clutch device 2 switches from the first state to the second state. The first ball 235 rolls on the plane of the first connecting portion 231, and the first ball 235 pushes the second connecting portion 232 to move axially to the right relative to the first connecting portion 231. Figure 11 In the spherical structure shown, the stroke of the second connecting part 232 moving to the right along the axial direction is doubled.

[0131] Specifically, refer to Figure 11 and Figure 18 A first additional connecting portion 244 and a second additional connecting portion 243 are provided between the first connecting portion 231 and the second connecting portion 232. Along the axial direction, the first additional connecting portion 244 is located between the first connecting portion 231 and the second additional connecting portion 243. The first additional connecting portion 244 is fixedly connected to the inner wall of the housing 20 circumferentially and movably connected to the inner wall of the housing 20 axially. The first additional connecting portion 244 is movably sleeved on the motor shaft 21 axially. The second additional connecting portion 243 is movably sleeved on the motor shaft 21 axially and abuts against the second connecting portion 232 axially. The second additional connecting portion 243 is fixed relative to the motor shaft 21 circumferentially.

[0132] For example, the outer peripheral surface of the first additional connecting portion 244 is provided with a slot, and the first additional connecting portion 244 engages with the axial extension 2322 of the second connecting portion 232 through the slot. That is, after the slot of the first additional connecting portion 244 engages with the axial extension 2322 of the second connecting portion 232, the slot rotates synchronously with the second connecting portion 232, and the first additional connecting portion 244 moves axially relative to the axial extension 2322 of the second connecting portion 232 through the slot.

[0133] Along the axial direction, deep grooves 2323 are respectively provided on the opposite two surfaces of the first additional connecting portion 244 (and... Figure 8 The deep groove 2323 shown has the same structure, and the surface of the first connecting part 231 facing the first additional connecting part 244 is provided with a shallow groove 2312 (as shown). Figure 9 As shown, the second additional connecting portion 243 has a shallow groove 2312 on its surface facing the first additional connecting portion 244. Along the axial direction, the depth of the deep groove 2323 is deeper than the depth of the shallow groove 2312. The deep groove 2323 of the first additional connecting portion 244, together with the first connecting portion 231 and the shallow groove 2312 of the additional connecting portion, forms a spherical structure, which houses the first ball bearing 235.

[0134] For example, the two opposite surfaces of the first additional connecting portion 244 are respectively provided with two deep grooves 2323, and correspondingly, the first connecting portion 231 is provided with two shallow grooves 2312, and the second additional connecting portion 243 is provided with two shallow grooves 2312. The four shallow grooves 2312 correspond one-to-one with the four deep grooves 2323, forming four spherical structures, each of which contains a first ball bearing 235. However, this application does not limit the number of spherical structures, and the corresponding number of spherical structures can be set according to design needs, such as two, six, etc.

[0135] That is, shallow grooves 2312 that cooperate with the first ball 235 are respectively provided on both sides of the first additional connecting part 244. When the torque transmitted from the second connecting part 232 to the first ball 235 through the first additional connecting part 244 is large (for example, when the user rotates the screen 1b), the first ball 235 rotates synchronously with the deep groove 2323 and disengages from the shallow grooves 2312 of the first connecting part 231 and the second additional connecting part 243 respectively, and the clutch device 2 changes from the first state to the second state.

[0136] Because the left side of the first connecting part 231 is axially limited, the first connecting part 231 remains stationary. The second additional connecting part 243 abuts against the second connecting part 232. After the first ball 235 rolls on the plane of the first connecting part 231, the first ball 235 between the first connecting part 231 and the first additional connecting part 244 will push the first additional connecting part 244 to move axially to the right relative to the motor shaft 21. Figure 11 (As shown in direction A), the first additional connecting part 244 will push the second additional connecting part 243 to move to the right along the axial direction, and the second additional connecting part 243 will push the second connecting part 232 to move to the right along the axial direction.

[0137] Simultaneously, after the first ball 235 rolls on the plane of the second additional connecting part 243, the first ball 235 between the first additional connecting part 244 and the second additional connecting part 243 will push the second additional connecting part 243 to move axially to the right relative to the motor shaft 21. Figure 11 (As shown in direction A), the second additional connecting part 243 will then push the second connecting part 232 to move axially to the right. During torque switching, Figure 11 The spherical structure shown is relatively Figure 10 The spherical structure shown doubles the axial movement of the second connecting part 232.

[0138] For example, the first additional connecting portion 244 and the second additional connecting portion 243 described above are plate-shaped.

[0139] For example, refer to Figure 18A second ball bearing 2431 is provided between the second additional connecting part 243 and the second connecting part 232 to achieve rolling connection. Since the second connecting part 232 will rotate circumferentially relative to the motor shaft 21 and also circumferentially relative to the second additional connecting part 243, the second ball bearing 2431 supports the second additional connecting part 243 and the second connecting part 232, and acts as a rolling bearing.

[0140] Continue to refer to Figure 5 and Figure 6 The third connecting part 233 of this application is a rolling element. Figure 5 and Figure 6 The rolling element shown is a ball bearing. The aforementioned limiting portion includes: a first baffle 241, a second baffle 238, and a first elastic member 242. Along the axial direction, one end of the first elastic member 242 abuts against the damping shaft 22 or the housing 20, and the other end abuts against the first baffle 241. In this application, as... Figure 5 and Figure 6 As shown, the damping shaft 22 has a damping shaft shoulder 223, and one end of the first elastic member 242 abuts against the damping shaft shoulder 223. For example, Figure 5 and Figure 6 The diagram shows the first elastic element 242 as a disc spring. However, this application does not limit the specific type of the first elastic element 242; any structure capable of providing elastic force falls within the scope of protection of this application. For example, in some possible embodiments, the first elastic element 242 is a spring.

[0141] The aforementioned first baffle 241 is axially movably sleeved on the damping shaft 22, and the balls are axially positioned between the first baffle 241 and the second baffle 238. Figure 12 As shown, the first baffle 241 has a third mounting hole 2411, through which the first baffle 241 is axially movably fitted onto the other axial end 222 of the damping shaft 22. Exemplarily, the third mounting hole 2411 is an oblong hole.

[0142] The aforementioned second baffle 238 is movably disposed within the housing 20 in an axially oriented manner and abuts against the second connecting portion 232 in an axial direction. (See reference) Figure 13 For example, the second baffle 238 has a fourth mounting hole 2381, through which the second baffle 238 is axially movably fitted onto the other axial end 222 of the damping shaft 22. For example, the second baffle 238 has a first radial protrusion 2382, which engages with the aforementioned axial groove of the housing 20, so that the second baffle 238 is circumferentially fixedly connected to the inner wall of the housing 20 via the first radial protrusion 2382, and axially movably connected to the inner wall of the housing 20. For example, the first radial protrusion 2382 includes a circumferential ( Figure 13Multiple of them are distributed in the T-direction (as shown in the middle). This arrangement serves to provide axial guidance and circumferential restraint.

[0143] like Figure 13 As shown, the surface of the second baffle 238 facing the first baffle 241 has a groove 2383 for accommodating a portion of the ball. For example, Figure 13 The diagram shows a second baffle 238 having three circumferentially distributed grooves 2383, each groove 2383 containing a portion of a ball. This application does not limit the number of grooves 2383; the number can be adjusted according to the number of balls between the first baffle 241 and the second baffle 238. For example, if there is one ball, the number of grooves 2383 can be one.

[0144] In some possible implementations, the second baffle 238 is axially movably connected to the inner wall of the housing 20 (e.g., via the first radial protrusion 2382 described above) and is not connected to the damping shaft 22. Alternatively, in some possible implementations, the second baffle 238 is axially movably suspended within the housing 20, i.e., the second baffle 238 is not circumferentially fixedly connected to the inner wall of the housing 20.

[0145] In the first state (electric state) described above, along the axial direction, under the elastic force support of the elastic support portion 234, the second connecting portion 232 abuts against the second baffle 238, the first elastic member 242 elastically supports the first baffle 241, the ball abuts against the first baffle 241 and the second baffle 238 respectively, a portion of the ball is located in the groove 2383 of the second baffle 238, the first baffle 241 and the second baffle 238 clamp the ball, the ball is in radial clearance fit with the inner wall of the housing 20, and the housing 20 is not connected to the damping shaft 22.

[0146] In the second state (manual state), as the second connecting part 232 moves to the right along the axial direction, the second baffle 238 moves to the right along the axial direction relative to the damping shaft 22 and the housing 20. Under the elastic force of the first elastic element 242, the first baffle 241 moves to the right along the axial direction relative to the damping shaft 22. The first baffle 241 pushes the ball to move to the right along the axial direction so that it abuts against the inner wall of the housing 20 and the outer wall of the damping shaft 22 in the radial direction, respectively. The first baffle 241 restricts the axial movement of the ball. The housing 20, the ball and the damping shaft 22 are fixedly connected, and the damping shaft 22 can rotate synchronously with the housing 20.

[0147] In some possible implementations, refer to Figure 5 and Figure 14 A first additional baffle 239 is provided between the second baffle 238 and the second connecting portion 232. Along the axial direction, both ends of the first additional baffle 239 abut against the second baffle 238 and the second connecting portion 232, respectively. Figure 14 As shown. The first additional baffle 239 has a second radial protrusion 2392, which engages with the aforementioned axial groove of the housing 20, so that the first additional baffle 239 is circumferentially fixedly connected to the inner wall of the housing 20 via the second radial protrusion 2392, and axially movably connected to the inner wall of the housing 20. Exemplarily, the second radial protrusion 2392 includes a circumferential ( Figure 13 Multiple of them are distributed in the T-direction (as shown in the middle). This arrangement serves to provide axial guidance and circumferential restraint.

[0148] In addition, the first additional baffle 239 has a receiving hole 2391, in which the other axial end 222 of the damping shaft 22, the other axial end 212 of the motor shaft 21, and the nut 236 on the left side of the motor shaft 21 are received, thus saving axial space.

[0149] refer to Figure 5 and Figure 15 The inner wall of the aforementioned housing 20 is provided with a conical hole section 202. The other axial end 222 of the damping shaft 22 extends out from the conical hole section 202. The outer surface of the damping shaft 22 and the inner surface 2021 of the conical hole section 202 form a conical wedge structure V1, and the ball is accommodated in the conical wedge structure V1.

[0150] In the first state (electric state), the second baffle 238 is in contact with the end face of the conical hole section 202 along the axial direction, and the second baffle 238 pushes against the ball along the axial direction, so that the ball is in clearance fit with the inner surface 2021 of the conical hole section 202 in the radial direction.

[0151] In the second state (manual state), the second baffle 238 separates axially from the end face of the conical hole section 202, and the first baffle 241 pushes the ball to the right within the conical wedge structure V1, so that it abuts radially against the inner surface 2021 of the conical hole section 202 and the other axial end 222 of the damping shaft 22. The ball is pressed into this conical wedge structure V1 and contacts the inner surface 2021 of the conical hole section 202 and the outer circle of the damping shaft 22. The ball is locked by the inner surface 2021 of the conical hole section 202 and the outer circle of the damping shaft 22, thus connecting the housing 20 and the damping shaft 22.

[0152] For example, along the direction toward the second baffle 238 ( Figure 5 As shown in direction A, the aperture of the conical wedge structure V1 gradually decreases. That is, along the direction toward the second baffle 238, the radial distance between the inner surface 2021 of the conical hole segment 202 and the other axial end 222 of the damping shaft 22 gradually decreases.

[0153] In the first state, the ball is located on the large radial distance side within the conical wedge structure V1, and the radial dimension of the ball is smaller than the radial distance of the conical wedge structure V1.

[0154] In the second state, the ball is located on the small radial distance side within the conical wedge structure V1, and the radial dimension of the ball is greater than or equal to the radial distance of the conical wedge structure V1. Exemplarily, in the second state, the ball and the conical wedge structure V1 are in a radial interference fit.

[0155] The aforementioned conical wedge structure V1 includes multiple structures distributed circumferentially. Figure 15 The diagram shows three conical wedge-shaped structures V1, each containing a ball bearing. Figure 15 The diagram shows three ball bearings and three conical wedge structures V1, but is not limited to this number.

[0156] For example, the conical wedge structure V1 described above includes two forms.

[0157] The first type: The inner wall of the housing 20 has a conical hollow section 202, and the outer contour of the other axial end 222 of the damping shaft 22 includes a cylindrical surface. The conical wedge structure V1 includes the conical hollow section 202 of the housing 20 and the cylindrical surface of the other axial end 222 of the damping shaft 22 (e.g., Figure 16 (As shown).

[0158] The second type: The inner wall of the housing 20 has a tapered hole section 202, and the outer contour of the other axial end 222 of the damping shaft 22 includes a non-cylindrical surface (such as...). Figure 17 As shown), the non-cylindrical surface is, for example, an arc surface or a polygonal prism surface. The conical wedge structure V1 includes a conical hole section 202 of the housing 20 and a non-cylindrical surface of the other axial end 222 of the damping shaft 22.

[0159] The working process of the first and second states will be illustrated below with examples based on the specific structure of the clutch device 2 described above.

[0160] The working principle of the clutch device 2 in the first state is described in detail below:

[0161] like Figure 5 As shown, the first elastic element 242, the first baffle 241, the ball (i.e. the third connecting part 233), the second baffle 238, the first additional baffle 239, the second connecting part 232, and the elastic support part 234 elastically support each other, and the first connecting part 231 and the second connecting part 232 are fixedly connected in the circumferential direction by the first ball 235.

[0162] The first connecting part 231 can move axially relative to the motor shaft 21, and can move and rotate axially relative to the second connecting part 232; the second connecting part 232 can move axially relative to the housing 20, and can move and rotate axially relative to the motor shaft 21; under the action of the elastic support part 234, the second connecting part 232 presses the first ball 235 and the first connecting part 231, the first ball 235 is in the groove of the first connecting part 231 and the second connecting part 232, and connects the first connecting part 231 and the second connecting part 232 (the nut 236 is threaded to the motor shaft 21, restricting the left axial position of the first connecting part 231 and adjusting the clamping force of the elastic support part 234), thereby connecting the housing 20 and the motor shaft 21, and rotating together in both directions.

[0163] In this state, the ball (i.e., the third connecting part 233) is held between the first baffle 241 and the second baffle 238 by the action of the first elastic member 242 and the elastic support part 234. The first baffle 241 can move axially relative to the damping shaft 22 and can move and rotate axially relative to the housing 20; the second baffle 238 can move axially relative to the housing 20 and can rotate synchronously with the housing 20 in the circumferential direction. The second baffle 238 can move and rotate axially relative to the damping shaft 22. The ball is located in the groove 2383 of the second baffle 238 and rotates with the second baffle 238, and rolls on the first baffle 241. The ball may or may not be in contact with either the housing 20 or the damping shaft 22, and the housing 20 and the damping shaft 22 are in a disconnected state.

[0164] The working principle of this clutch device 2 in the second state is described in detail below: (Refer to...) Figure 6 When the torque transmitted from the second connecting part 232 to the first ball 235 is large, the first ball 235 rotates synchronously with the deep groove 2323 and disengages from the shallow groove 2312. The first ball 235 pushes the second connecting part 232 to move to the right relative to the first connecting part 231 along the axial direction. The second baffle 238 moves to the right relative to the damping shaft 22 and the housing 20 along the axial direction. Under the action of the first elastic element 242, the first baffle 241 presses the ball into the conical wedge structure V1 formed by the housing 20 and the damping shaft 22. Through the wedge tightening principle, the housing 20 and the damping shaft 22 are connected and rotate together in both directions.

[0165] That is, in the first state, under the action of the elastic support 234, the first ball 235 can provide a maximum torque of T1 to the housing 20, and T2 is the holding torque of the motor shaft 21. <T2。

[0166] The first state switches to the second state: When the torque on the housing 20 is less than or equal to T1, the housing 20 and the motor shaft 21 rotate together; when the torque on the housing 20 is greater than T1, the first ball 235 disengages from the shallow groove 2312 of the first connecting part 231, the second connecting part 232 moves to the right along the axial direction, the first baffle 241 and the second baffle 238 move to the right under the action of the first elastic member 242, and the ball is pressed into the conical wedge structure V1 formed by the housing 20 and the damping shaft 22 by the first baffle 241, and the structure switches from the first state to the second state.

[0167] The second state switches to the first state: the motor shaft 21 drives the first connecting part 231 to rotate, the first ball 235 rolls relative to the first baffle 241 and falls into the shallow groove 2312 of the first baffle 241, and the second connecting part 232 moves to the left axially under the action of the elastic support part 234. Figure 5 (in the opposite direction of A), the first baffle 241 and the second baffle 238 also move to the left axial direction under the action of the first elastic member 242 and the elastic support 234. The ball is pushed out from the conical wedge structure V1 formed by the housing 20 and the damping shaft 22 by the second baffle 238. The ball is pressed and connected together by the first baffle 241 and the second baffle 238, and the structure switches from the second state to the first state.

[0168] In the above embodiments, the rolling element between the first baffle 241 and the second baffle 238 is a ball. In some possible embodiments, the rolling element is a tapered roller. The first baffle 241 and the second baffle 238 are provided with grooves for accommodating the tapered roller. Figures 18 to 20 As shown, the other axial end 222 of the damping shaft 22 has a concave outer conical surface 2221. The conical hole section 202 of the inner wall of the housing 20 forms a conical wedge structure V1 with the outer conical surface of the damping shaft 22. When the roller is pressed into this conical wedge structure V1 and contacts the inner surface 2021 (not shown) of the conical hole section 202 and the outer conical surface 2221 of the damping shaft 22 (as shown in the figure), when the roller is pressed into this conical wedge structure V1 and contacts the inner surface 2021 (not shown) of the conical hole section 202 and the outer conical surface 2221 of the damping shaft 22, the roller will be in contact with the inner surface 2021 (not shown) of the conical hole section 202 and the outer conical surface 2221 of the damping shaft 22. Figure 18 As shown, the roller is held in place by the inner surface 2021 of the conical hole section 202 and the outer conical surface 2221 of the damping shaft 22, thus connecting the housing 20 with the damping shaft 22.

[0169] In this application, six rolling cones and six conical wedge structures V1 are provided between the first baffle 241 and the second baffle 238, but this application is not limited to this number. Furthermore, the concave outer conical surface 2221 at the other axial end 222 of the damping shaft 22 in this application can be a polygonal prism surface (…). Figure 19 As shown), it can also be made into a curved surface (as shown). Figure 20 (As shown).

[0170] As mentioned above, Figure 5 and Figure 6As shown, one end of the first elastic member 242 abuts against the damping shaft shoulder 223. However, this application does not limit this, such as Figure 18 As shown, a second additional baffle 2412 is sleeved on the damping shaft 22. A first elastic member 242 is located between the first baffle 241 and the second additional baffle 2412. One end of the first elastic member 242 abuts against the second additional baffle 2412, and the other end abuts against the first baffle 241.

[0171] The above Figure 5 and Figure 6 as well as Figure 18 The combination of the limiting part and the conical wedge structure V1 shown allows the housing 20 to switch between being connected to and not connected to the damping shaft 22. Figures 21 to 23 The structure shown provides another type of limiting part structure and a conical wedge structure V1.

[0172] like Figure 21 and Figure 22 As shown, the inner wall of the housing 20 is provided with a conical hole section 202, and the other axial end 222 of the damping shaft 22 extends out from the conical hole section 202. The outer surface of the damping shaft 22 and the inner surface of the conical hole section 202 form a conical wedge structure V1.

[0173] like Figure 22 and Figure 23 As shown, the third connecting part 233 is a roller 250. Figure 23 The image shows six rollers 250, but this application does not limit the number of rollers 250, for example, it can be three, five, etc.

[0174] Figure 22 and Figure 23 The limiting part shown includes: a third baffle 245, a fourth baffle 246, a fifth baffle 247, a second elastic member 249, and a third elastic member 251.

[0175] The third baffle 245 is sleeved on the damping shaft 22. Exemplarily, the third baffle 245 is axially movably connected to the damping shaft 22 and is spaced apart from the conical hole section 202 to form a snap-fit ​​section. A portion of the roller 250 snaps into the snap-fit ​​section, and another portion is accommodated in the conical wedge structure V1. The roller 250 is circumferentially movable along the conical wedge structure V1. Figure 21(As shown in the T-direction) movement. The conical hole segment 202 is located between the third baffle 245 and the fourth baffle 246. The fourth baffle 246 is fixedly connected to the inner wall of the housing 20 circumferentially and movably connected to the inner wall of the housing 20 axially. Exemplarily, the fourth baffle 246 has a third radial protrusion 2462, which engages with the aforementioned axial groove of the housing 20, so that the fourth baffle 246 is fixedly connected to the inner wall of the housing 20 circumferentially through the third radial protrusion 2462 and movably connected to the inner wall of the housing 20 axially. Exemplarily, the third radial protrusion 2462 includes a circumferential ( Figure 13 Multiple (as shown in the T direction) distributed in the middle T direction Figure 23 Three are shown in the image.

[0176] The fifth baffle 247 has a top post 2471 at one axial end and is fixedly connected to the second connecting portion 232 at the other axial end. The top post 2471 extends toward the third baffle 245 and protrudes from the fourth baffle 246. The fourth baffle 246 has a through hole 2461 through which the top post 2471 passes axially, allowing the top post 2471 to move axially relative to the fourth baffle 246. Exemplarily, the fifth baffle 247 and the axial extension 2322 of the second connecting portion 232 are connected by a wedge 248, allowing them to move together axially. In some possible embodiments, the fifth baffle 247 and the axial extension 2322 of the second connecting portion 232 can also be connected by other means, such as welding.

[0177] like Figure 22 As shown, one end of the second elastic member 249 abuts against the fourth baffle 246, and the other end abuts against the second connecting part 232 or the fifth baffle 247. Figure 21 As shown, the third elastic element 251 is located in the conical wedge structure V1 and abuts against another part of the roller 250 in the circumferential direction.

[0178] In the first state (electric state), the fourth baffle 246 is axially attached to the end face of the conical hole section 202, the top column 2471 extends into the conical wedge structure V1, and clamps another part of the roller 250 with the third elastic member 251 in the circumferential direction. The third elastic member 251 is squeezed, and the other part of the roller 250 is radially clearance-fitted with the inner surface of the conical hole section 202. The damping shaft 22 and the housing 20 are in the disconnected state.

[0179] In the second state (manual state), after the second connecting part 232 moves to the right along the axial direction, it drives the fourth baffle 246 and the fifth baffle 247 to move to the right along the axial direction. The fourth baffle 246 separates from the end face of the conical hole section 202 along the axial direction, and the top column 2471 separates from the other part of the roller 250 along the axial direction. The third elastic member 251 presses the other part of the roller 250 in the circumferential direction so that the other part of the roller 250 abuts against the inner surface of the conical hole section 202 and the outer wall of the damping shaft 22 in the radial direction, respectively. The damping shaft 22 and the housing 20 are in a connected state.

[0180] That is, in the second state, the roller 250 is pressed into the conical wedge structure V1 by the action of the third elastic member 251, and the conical wedge structure V1 locks the roller 250, thereby connecting the housing 20 with the damping shaft 22.

[0181] In the first state, the top post 2471 of the fifth baffle 247 lifts the roller 250, causing the roller 250 to circumferentially separate from the conical wedge structure V1 and compressing the third elastic element 251. At this time, the housing 20 separates from the damping shaft 22.

[0182] In the second state, after the fifth baffle 247 moves axially to the right, the top post 2471 also moves axially to the right. The top post 2471 is not in contact with the roller 250, and the roller 250 is pressed into the wedge structure under the action of the third elastic member 251. At this time, the housing 20 is engaged with the damping shaft 22. The second elastic member 249 is located between the fourth baffle 246 and the fifth baffle 247. Exemplarily, the second elastic member 249 remains in a compressed state, pressing the fourth baffle 246 against the housing 20.

[0183] Figure 21 The diagram shows three conical wedge structures V1 distributed circumferentially, and three rollers 250 corresponding to the three conical wedge structures V1. However, this application does not limit the number of conical wedge structures V1; for example, it can also be one, four, etc.

[0184] For example, along the circumferential direction ( Figure 21 As shown in the T-direction, the radial distance of the aforementioned conical wedge structure V1 includes a large radial distance and a small radial distance. Exemplarily, the radial distance of the conical wedge structure V1 gradually decreases along the circumferential direction. That is, along the circumferential direction, the radial distance between the inner surface 2021 of the conical hole segment 202 and the other axial end 222 of the damping shaft 22 includes a large radial distance and a small radial distance.

[0185] In the first state, the roller 250 is located on the large radial distance side of the conical wedge structure V1, and the other part of the roller 250 is in a clearance fit with the inner surface of the conical hole section 202 along the radial direction, while the damping shaft 22 and the housing 20 are in a disconnected state. In the second state, the roller 250 is located on the small radial distance side of the conical wedge structure V1, and the other part of the roller 250 abuts against the inner surface of the conical hole section 202 and the outer wall of the damping shaft 22 along the radial direction, while the damping shaft 22 and the housing 20 are in a connected state.

[0186] For example, the second elastic element 249 is a disc spring or spring, and the third elastic element 251 is an elastic post.

[0187] As mentioned above, refer to Figure 5 and Figure 6 The power switching device includes an elastic support portion 234, one end of which supports the second connecting portion 232. To limit the other end of the elastic support portion 234, the clutch device 2 of this application also includes a first elastic limiting portion 26. For example... Figure 24 and Figure 25 As shown, the first elastic limiting part 26 includes an inner cavity 261 and a through hole 262 communicating with the inner cavity 261. The inner cavity 261 of the first elastic limiting part 26 is fixedly connected to one axial end of the housing 20. One axial end 211 of the motor shaft 21 extends out of the inner cavity 261 through the through hole 262 of the first elastic limiting part 26. An elastic abutment 237 is provided between the elastic support part 234 and the first elastic limiting part 26. The elastic abutment 237 can move axially relative to the housing 20 and the motor shaft 21. One end of the elastic support part 234 is connected to the elastic abutment 237, and the elastic abutment 237 is in rolling connection with the first elastic limiting part 26.

[0188] In some possible implementations, such as Figure 24 and Figure 25 As shown, the first elastic limiting part 26 is a first nut, which is threadedly connected to the outer surface of one axial end of the housing 20. The first nut is threadedly connected to the housing 20, and adjusting the tightening amount of the first nut can adjust the elastic force of the elastic support part 234 (e.g., a disc spring), thereby adjusting the maximum torque transmitted to the housing 20 by the first ball 235.

[0189] For example, the aforementioned elastic abutment 237 is fixedly connected to the inner wall of the housing 20 in the circumferential direction. Figure 26 As shown, the elastic abutment 237 has a fourth radial protrusion 2372, which engages with the aforementioned axial groove of the housing 20, so that the elastic abutment 237 is fixedly connected to the inner wall of the housing 20 circumferentially via the fourth radial protrusion 2372, and is movably connected to the inner wall of the housing 20 axially. Exemplarily, the fourth radial protrusion 2372 includes a circumferential ( Figure 26Multiple (as shown in the T direction) distributed in the middle T direction Figure 26 (Three are shown in the figure). The elastic stop 237 is sleeved on the motor shaft 21 through the through hole 2371. Exemplarily, the through hole 2371 is a round hole.

[0190] like Figure 5 and Figure 27 As shown, the motor shaft 21 has a motor shaft shoulder 213, which is located between the elastic abutment 237 and the first elastic limiting part 26. The motor shaft shoulder 213 has a through hole 2132, in which a ball bearing 2131 is installed. The ball bearing 2131 in the through hole 2132 makes rolling contact with both the elastic abutment 237 and the first elastic limiting part 26. The ball bearing 2131 supports the elastic abutment 237 and the first nut, and reduces the friction between them. The motor shaft shoulder 213 and the housing 20 are axially movable and rotatable, as are the motor shaft shoulder 213 and the first nut.

[0191] Continue to refer to Figure 5 and Figure 6 The clutch device 2 of this application further includes a second elastic limiting part 27, which is fixedly connected to the other axial end of the housing 20. One axial end 221 of the damping shaft 22 extends out of the second elastic limiting part 27, and the damping shaft shoulder 223 is rolledly connected to the second elastic limiting part 27. Exemplarily, the structure of the second elastic limiting part 27 is the same as the structure of the first elastic limiting part 26.

[0192] In some possible implementations, Figure 18 As shown, the damping shaft shoulder 223 is rolledly connected to the second elastic limiting portion 27 and the second additional baffle 2412.

[0193] In some possible implementations, Figure 22 As shown, the damping shaft shoulder 223 is rolledly connected to the second elastic limiting part 27 and the third baffle 245 respectively.

[0194] For example, the second elastic limiting part 27 described above is a second nut, which is threadedly connected to the outer surface of the other axial end of the housing 20. The second nut is threadedly connected to the housing 20, and adjusting the tightening amount of the second nut can adjust the elastic force of the first elastic element 242 or the second elastic element 249 (e.g., a disc spring), thereby adjusting the clamping force on the first ball 235 or the roller 250 in the conical wedge-shaped space formed by the housing 20 and the damping shaft 22.

[0195] like Figure 16 and Figure 17 As shown, the damping shaft shoulder 223 has a through hole 2232, and a ball bearing 2231 is installed in the through hole 2232. Figure 5 and Figure 6As shown, the balls 2231 inside the through hole 2232 roll into contact with the damping shaft shoulder 223 and the second elastic limiting part 27, respectively. Figure 18 As shown, the balls 2231 inside the through hole 2232 make rolling contact with the second additional baffle 2412 and the second elastic limiting part 27, respectively. Figure 22 As shown, the ball bearings 2231 inside the through hole 2232 make rolling contact with the third baffle 245 and the second elastic limiting part 27, respectively. The ball bearings 2231 support the damping shaft 22 and the second nut, and reduce the friction between the damping shaft 22 and the second nut.

[0196] In summary, by introducing a two-way torque clutch device into electrically operated products (such as PCs), and adding a two-way torque clutch device between the electric and manual transmission mechanisms, the product can freely switch between electric opening and closing (first state) and manual opening and closing (second state). This solves the problem of manual intervention damaging the motor and the product becoming unusable after motor damage during the electric opening and closing process, while maintaining the same manual opening and closing experience as ordinary manually operated products.

Claims

1. A clutch device, characterized in that, include: Housing, motor shaft, damping shaft, and power switching device; The housing is used for fixed connection with external objects; One axial end of the motor shaft is located outside the housing and is used to connect to the motor, while the other axial end of the motor shaft is located inside the housing. The extension direction of the damping shaft is consistent with the extension direction of the motor shaft. One axial end of the damping shaft is located outside the housing and is used to connect with the damping mechanism. The other axial end of the damping shaft is located inside the housing. The power switching device is located inside the housing and is connected to the other axial end of the motor shaft and the other axial end of the damping shaft, respectively, so that the housing can switch between a first state and a second state. In the first state, the housing can rotate synchronously with the motor shaft, but not synchronously with the damping shaft; In the second state, when the housing is manually rotated, the damping shaft can rotate synchronously with the housing, while the housing does not rotate synchronously with the motor shaft.

2. The clutch device as described in claim 1, characterized in that, In the first state, the external torque acting on the housing is less than or equal to the torque transmitted to the housing by the motor. The torque transmitted to the housing by the motor enables the housing to rotate synchronously with the motor shaft, but not synchronously with the damping shaft. In the second state, the external torque acting on the housing is greater than the torque transmitted to the housing by the motor. The external torque is transmitted to the housing, enabling the damping shaft to rotate synchronously with the housing, while the housing does not rotate synchronously with the motor shaft.

3. The clutch device as described in claim 1 or 2, characterized in that, The power switching device includes: a first connecting part, a second connecting part, a third connecting part, a limiting part, and an elastic support part; The first connecting part is connected to the other axial end of the motor shaft and can rotate synchronously with the other axial end of the motor shaft; The second connecting part is movably sleeved on the other end of the motor shaft in an axial manner, and is arranged opposite to the first connecting part in the axial direction. The second connecting part is fixedly connected to the inner wall of the housing in the circumferential direction, and is movably connected to the inner wall of the housing in the axial direction. Along the axial direction, one axial end of the second connecting portion is supported by the elastic support portion, and the other axial end abuts against one axial end of the limiting portion; The limiting part is provided inside the housing in a manner that allows it to move along the axial direction; The third connecting portion is located radially between the inner wall of the housing and the outer wall of the damping shaft, and the radial direction is perpendicular to the axial direction; In the first state, the first connecting part and the second connecting part are fixedly connected along the circumferential direction, and the limiting part causes the third connecting part to have a clearance fit with the inner wall of the housing in the radial direction; In the second state, when the housing is manually rotated, the second connecting part moves relative to the first connecting part along the axial direction toward the elastic support part. The second connecting part is movably connected to the first connecting part along the circumferential direction. The limiting part moves along the axial direction with the second connecting part, so that the third connecting part abuts against the inner wall of the housing and the outer wall of the damping shaft in the radial direction, so that the damping shaft can rotate synchronously with the housing.

4. The clutch device as described in claim 3, characterized in that, The surface of the first connecting part facing the second connecting part has a shallow groove, and the surface of the second connecting part facing the first connecting part has a deep groove. Along the axial direction, the depth of the deep groove is greater than the depth of the shallow groove. The shallow groove and the deep groove form a spherical structure, and the spherical structure contains a first ball bearing.

5. The clutch device as described in claim 3, characterized in that, A first additional connecting part and a second additional connecting part are provided between the first connecting part and the second connecting part, and along the axial direction, the first additional connecting part is located between the first connecting part and the second additional connecting part; The first additional connecting part is fixedly connected to the inner wall of the housing along the circumferential direction and movably connected to the inner wall of the housing along the axial direction. The second additional connecting part is sleeved on the motor shaft in a movably axial manner and abuts against the second connecting part along the axial direction. Along the axial direction, deep grooves are provided on opposite surfaces of the first additional connecting portion, and shallow grooves are provided on the surface of the first connecting portion facing the first additional connecting portion. Shallow grooves are also provided on the surface of the second additional connecting portion facing the first additional connecting portion. Along the axial direction, the depth of the deep grooves is greater than the depth of the shallow grooves. The deep grooves of the first additional connecting portion and the shallow grooves of the first connecting portion and the additional connecting portion respectively form a spherical structure, and the spherical structure contains a first ball bearing.

6. The clutch device as described in claim 5, characterized in that, A second ball bearing is provided between the second additional connecting part and the second connecting part to achieve a rolling connection.

7. The clutch device according to any one of claims 4 to 6, characterized in that, The second connecting part is provided with an axial extension, and the inner wall of the housing is provided with an axial groove. The axial extension engages with the axial groove so that the second connecting part is fixedly connected to the inner wall of the housing in the circumferential direction and movably connected to the inner wall of the housing in the axial direction.

8. The clutch device as described in claim 7, characterized in that, The second connecting portion includes a plurality of axially extending portions, which circumferentially surround the first connecting portion.

9. The clutch device according to any one of claims 4 to 6 and 8, characterized in that, The spherical structure comprises a plurality of structures distributed along the circumference.

10. The clutch device as described in claim 3, characterized in that, The third connecting part is a rolling element, and the limiting part includes: a first baffle, a second baffle, and a first elastic element; Along the axial direction, one end of the first elastic element abuts against the damping shaft or the housing, and the other end abuts against the first baffle. The first baffle is movably fitted onto the damping shaft along the axial direction, and the rolling element is located axially between the first baffle and the second baffle; The second baffle is disposed within the housing in a manner movably along the axial direction and abuts against the second connecting portion along the axial direction; In the first state, along the axial direction, the rolling element abuts against the first baffle and the second baffle respectively, and in the radial direction, it has a clearance fit with the inner wall of the housing; In the second state, the rolling element abuts against the inner wall of the housing and the outer wall of the damping shaft in the radial direction, and the first baffle restricts the axial movement of the rolling element.

11. The clutch device as claimed in claim 10, characterized in that, The inner wall of the housing is provided with a conical hole section, and the other axial end of the damping shaft extends out from the conical hole section. The outer surface of the damping shaft and the inner surface of the conical hole section form a conical wedge structure, and the rolling element is accommodated in the conical wedge structure. In the first state, the second baffle is in contact with the end face of the conical hole segment along the axial direction; In the second state, the second baffle is separated from the end face of the conical hole segment along the axial direction.

12. The clutch device as claimed in claim 11, characterized in that, The conical wedge structure comprises a plurality of structures distributed along the circumferential direction.

13. The clutch device according to any one of claims 10 to 12, characterized in that, The rolling element is a ball or a cone.

14. The clutch device according to any one of claims 10 to 12, characterized in that, The damping shaft has a damping shaft shoulder, and one end of the first elastic member abuts against the damping shaft shoulder.

15. The clutch device according to any one of claims 10 to 12, characterized in that, The first elastic element is a disc spring or a spring.

16. The clutch device as claimed in claim 3, characterized in that, The inner wall of the housing is provided with a conical hole section, and the other axial end of the damping shaft extends out from the conical hole section. The outer surface of the damping shaft and the inner surface of the conical hole section form a conical wedge structure. The third connecting part is a roller, and the limiting part includes: a third baffle, a fourth baffle, a fifth baffle, a second elastic element, and a third elastic element; The third baffle is sleeved on the damping shaft and spaced apart from the conical hole section to form a snap-fit ​​section. A part of the roller is snapped into the snap-fit ​​section, and another part is accommodated in the conical wedge structure. The roller can move circumferentially along the conical wedge structure. The conical hole segment is located between the third baffle and the fourth baffle. The fourth baffle is fixedly connected to the inner wall of the housing along the circumferential direction and is movably connected to the inner wall of the housing along the axial direction. The fifth baffle has a top post at one axial end and is fixedly connected to the second connecting part at the other axial end. The top post extends toward the third baffle and protrudes from the fourth baffle. One end of the second elastic member abuts against the fourth baffle, and the other end abuts against the second connecting part or the fifth baffle; The third elastic element is located in the conical wedge structure and abuts against the other part of the roller in the circumferential direction; In the first state, the fourth baffle is in contact with the end face of the conical hole section along the axial direction, the top column extends into the conical wedge structure and clamps the other part of the roller with the third elastic member in the circumferential direction, the third elastic member is squeezed, and the other part of the roller is in clearance fit with the inner surface of the conical hole section in the radial direction. In the second state, the fourth baffle separates from the end face of the conical hole section along the axial direction, the top column separates from the other part of the roller along the axial direction, and the third elastic member presses the other part of the roller along the circumferential direction so that the other part of the roller abuts against the inner surface of the conical hole section and the outer wall of the damping shaft in the radial direction, respectively.

17. The clutch device as claimed in claim 16, characterized in that, The conical wedge structure includes a plurality of conical wedges distributed along the circumferential direction, and the rollers include a plurality of rollers corresponding one-to-one with the plurality of conical wedge structures.

18. The clutch device as claimed in claim 17, characterized in that, The other axial end of the fifth baffle is fixedly connected to the second connecting part by a wedge.

19. The clutch device as claimed in claim 3, characterized in that, It also includes a first elastic limiting part, which is fixedly connected to one axial end of the housing, and one axial end of the motor shaft extends out of the first elastic limiting part. An elastic abutment is provided between the elastic support part and the first elastic limiting part. The elastic abutment is axially movable relative to the housing and the motor shaft. One end of the elastic support is connected to the elastic abutment, and the elastic abutment is in rolling connection with the first elastic limiting part.

20. The clutch device as claimed in claim 19, characterized in that, The elastic abutment is fixedly connected to the inner wall of the housing in the circumferential direction.

21. The clutch device as described in claim 19 or 20, characterized in that, The first elastic limiting part is a first nut, which is threadedly connected to the outer surface of one axial end of the housing.

22. The clutch device as claimed in any one of claims 19 or 20, characterized in that, The motor shaft has a motor shaft shoulder, which is located between the elastic abutment and the first elastic limiting part. The motor shaft shoulder has a through hole, and a ball is installed in the through hole. The ball in the through hole makes rolling contact with the elastic abutment and the first elastic limiting part respectively.

23. The clutch device as described in claim 14, characterized in that, It also includes a second elastic limiting part, which is fixedly connected to the other axial end of the housing. One axial end of the damping shaft extends out of the second elastic limiting part, and the shoulder of the damping shaft and the second elastic limiting part are rolled together.

24. The clutch device according to any one of claims 16 to 18, characterized in that, It also includes a second elastic limiting part, which is fixedly connected to the other axial end of the housing, and one axial end of the damping shaft extends out of the second elastic limiting part. The third baffle and the second elastic limiting part are in rolling connection.

25. The clutch device as claimed in claim 23, characterized in that, The second elastic limiting part is a second nut, which is threadedly connected to the outer surface of the other end of the housing along the axial direction.

26. An electronic device, characterized in that, include: First object; A second object, which is rotatably connected to the first object; The clutch device according to any one of claims 1 to 25, wherein a portion of the housing is fixedly connected to the first object, and another portion of the housing is mounted on the second object.

27. The electronic device as claimed in claim 26, characterized in that, The first object is the display screen, and the second object is the host computer.

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