CN112431867A

CN112431867A - Automatic clutch actuator

Info

Publication number: CN112431867A
Application number: CN202011289498.XA
Authority: CN
Inventors: 李磊; 吕小科; 韦贤玕; 钱灿
Original assignee: Suzhou Lvkon Transmission S&T Co Ltd
Current assignee: Suzhou Lvkon Transmission S&T Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-03-02

Abstract

The invention discloses an automatic clutch actuating mechanism which comprises a shell and a clutch driving motor, wherein a driving wheel is arranged on the clutch driving motor, a release bearing is arranged in the shell in a sliding mode, at least one face, opposite to the driving wheel and the release bearing, of the driving wheel is provided with at least one clutch groove, the depth of the clutch groove is gradually changed in the circumferential direction, and a clutch ball is arranged in the clutch groove. The novel hybrid power system is compact in structure, small in size, high in control precision, low in energy consumption, easy to industrialize, especially suitable for new energy hybrid power products, and beneficial to rapid popularization.

Description

Automatic clutch actuator

Technical Field

The invention relates to the technical field of automatic control of clutches, in particular to an automatic clutch actuating mechanism.

Background

Clutches are key components of automobiles. The power end and the output end can be isolated, so that the whole power system and the whole transmission system are protected. At present, although electric new energy automobiles are widely popularized, the defects of short endurance time and the like still exist. To solve these drawbacks, hybrid products have been produced. However, since the electric new energy automobile is not equipped with a clutch under no special requirements, and the traditional automobile needs to be equipped with a clutch, a more space-saving clutch is needed to reduce the volume of the hybrid electric automobile and reduce the load of the hybrid electric automobile.

Disclosure of Invention

The invention aims to provide an automatic clutch actuating mechanism which is compact in structure, small in size, high in control precision, low in energy consumption, easy to industrialize, especially suitable for new energy hybrid power products and beneficial to rapid popularization.

In order to solve the technical problem, the invention provides an automatic clutch actuating mechanism which comprises a shell and a clutch driving motor, wherein a driving wheel is arranged on the clutch driving motor, a release bearing is arranged in the shell in a sliding mode, at least one clutch groove is formed in at least one surface of the driving wheel, which is opposite to the release bearing, the depth of the clutch groove is gradually changed in the circumferential direction, and a clutch ball is arranged in the clutch groove.

In a preferred embodiment of the present invention, the clutch and the driving wheel are respectively located at two sides of the release bearing, one end of the release bearing is provided with a moving plate, the other end of the release bearing is adjacent to the driving wheel, the moving plate is connected with the clutch, the clutch ball can at least partially expose when located at a position where the clutch groove is shallow, the clutch driving motor includes a motor stator and a motor rotor, and the driving wheel is located on the motor rotor.

In a preferred embodiment of the present invention, the clutch device further includes three clutch grooves uniformly distributed on the opposite surfaces of the driving wheel and/or the release bearing, and a clutch ball is disposed in each clutch groove.

In a preferred embodiment of the present invention, the clutch groove further includes a separation platform, a combination platform and a transition wedge surface, the separation platform is located at a position where the depth of the clutch groove is shallow, the separation platform is parallel to the wheel surface of the driving wheel, the combination platform is located at a position where the depth of the clutch groove is deep, and the transition wedge surface is located between the separation platform and the combination platform.

In a preferred embodiment of the present invention, the release bearing further includes a guide groove axially formed on a side wall of the release bearing, and a guide post is disposed in the housing and located in the guide groove.

In a preferred embodiment of the present invention, the release bearing further comprises an elastic member disposed thereon for enabling the release bearing to have a tendency to move toward the drive wheel.

In a preferred embodiment of the invention, the clutch driving motor is provided with position signal feedback, or a linear position sensor is arranged at the position of the release bearing.

In a preferred embodiment of the present invention, the central axis of the clutch groove is in a circular ring shape concentric with the driving wheel; or the clutch grooves are in a radial shape which diverges outwards from the center and do not coincide with the radial direction of the driving wheel.

In a preferred embodiment of the present invention, the engaging groove has a plurality of engaging grooves which are connected end to end, and the central axis of the engaging groove is in a circular ring shape concentric with the driving wheel.

In a preferred embodiment of the present invention, a speed reducer is disposed at a free end of the clutch driving motor, and the driving wheel is disposed on the speed reducer.

The invention has the beneficial effects that:

the automatic clutch actuating mechanism is provided with the clutch driving motor which can drive the driving wheel to rotate. When the driving wheel rotates, the clutch ball and the driving wheel generate reverse relative movement, so that the clutch ball rolls in the clutch groove. When the clutch ball is located at the position with shallow depth of the clutch groove, the release bearing can be pushed to move towards the clutch, and when the clutch ball is located at the position with shallow depth of the clutch groove, the force pushing the release bearing disappears, so that the clutch is realized. Actuating mechanism is very simple, and control accuracy is high, when the different clutches of adaptation, only need adjust axial position can, and actuating mechanism is in the intermediate position, can reduce the external dimension by a wide margin, and the product suitability is high.

Drawings

FIG. 1 is a schematic illustration in partial cross-section of an automatic clutch actuator in accordance with a preferred embodiment of the present invention;

FIG. 2 is a line-up view of the clutch slot of the automatic clutch actuator;

FIG. 3 is a schematic illustration of the clutch of the automatic clutch actuator in a disengaged state;

FIG. 4 is a schematic diagram of the automatic clutch actuator clutch in an engaged state.

The reference numbers in the figures illustrate:

1-clutch, 2-release bearing, 201-moving plate, 202-guide groove, 3-guide column, 4-clutch ball, 5-shell, 6-speed reducer, 7-motor stator, 8-motor rotor, 9-driving wheel, 11-release groove, 12-release platform, 13-combination platform and 14-transition wedge surface.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Examples

The invention discloses an automatic clutch actuating mechanism, which is shown in figures 1-2 and comprises a shell 5 and a clutch driving motor. The clutch driving motor is provided with a driving wheel 9. The housing 5 is provided with a release bearing 2 slidably therein. At least one face of the driving wheel 9 opposite to the release bearing 2 is provided with at least one release groove 11. In the circumferential direction, the depth of the clutch groove 11 is gradually changed. The clutch groove 11 is provided with a clutch ball 4 therein. Above the optimized design, the clutch driving motor can drive the driving wheel 9 to rotate. When the driving wheel 9 rotates, the clutch balls 4 and the driving wheel 9 generate opposite relative movement, so that the clutch balls roll in the clutch grooves 11. When the clutch ball 4 is located at a position where the depth of the clutch groove 11 is shallow, the release bearing 2 can be pushed to move toward the clutch 1, and when the clutch ball 4 is located at a position where the depth of the clutch groove 11 is shallow, the force pushing the release bearing 2 disappears, thereby realizing the clutch of the clutch 1. Actuating mechanism is very simple, and control accuracy is high, when the different clutch 1 of adaptation, only need adjust axial position can, and actuating mechanism is in the intermediate position, can reduce outside dimension by a wide margin, and the product suitability is high.

Specifically, the clutch 1 and the drive pulley 9 are located on both sides of the release bearing 2, respectively. One end of the release bearing 2 is provided with a movable piece 201, and the other end is adjacent to the driving wheel 9. The rotor 201 is connected to the clutch 1. The clutch ball 4 can be at least partially exposed when the clutch groove 11 is shallow. The clutch driving motor comprises a motor stator 7 and a motor rotor 8. The driving wheel 9 is arranged on the motor rotor 8. The clutch driving motor changes the position of the clutch ball 4 in the clutch groove 11 through positive rotation and negative rotation, so that the release bearing 2 moves towards the clutch 1 or moves away from the clutch 1, and the clutch of the clutch 1 is controlled. Preferably, the clutch ball 4 is a steel ball.

The shape and direction of the engaging groove 11 should be based on the smooth movement of the engaging ball 4 therein. If the central axis of the clutch groove 11 is arranged in a circular ring shape concentric with the driving wheel 9; in this case, when there is more than one engaging slot 11, all the engaging slots 11 may be connected end to further reduce the occupied space and the size of the actuator. Or, the clutch groove 11 presents a radial shape which is diverged outwards from the center, but is not overlapped with the radial direction of the driving wheel 9; when the engaging grooves 11 are formed in a radial shape, the central axis thereof may be an arc shape or a straight line.

In order to improve the accuracy of the movement of the release bearing 2 and the uniformity of the force, the three separation grooves 11 are uniformly distributed on the opposite surfaces of the driving wheel 9 and/or the release bearing 2. Each clutch groove 11 is provided with a clutch ball 4.

In order to reduce the gap between the release bearing 2 and the driving wheel 9, reduce the size of the actuator and improve the response speed of the actuator, the release bearing 2 and the driving wheel 9 are both provided with clutch grooves 11 which are mirror images of each other. Under the original size of the clutch groove 11, the response speed can be doubled.

In a preferred embodiment of the present invention, the clutch groove 11 includes a separating platform 12, a combining platform 13 and a transition wedge surface 14. The separation platform 12 is located at a position where the depth of the separation groove 11 is shallow. The separating platform 12 is parallel to the tread of the driving wheel 9. The coupling platform 13 is located at a position deeper from the depth of the coupling groove 11. The transition wedge surface 14 is located between the separation platform 12 and the joining platform 13. The separation platform 12 can stabilize the position of the clutch ball 4, so that the separation bearing 2 is kept away from the driving wheel 9; meanwhile, when the clutch grooves 11 are connected end to end, the separating platform 12 can ensure that the two connected clutch grooves 11 are still blocked, and the clutch balls 4 are prevented from being out of position. The coupling platform 13 can accommodate the clutch ball 4. The transitional wedge surface 14 can improve the smoothness of the movement of the clutch ball 4 and the linearity of the position of the clutch ball 4 and the release bearing 2, and improve the convenience of control.

In order to prevent the release bearing 2 from rotating and affecting the clutch control accuracy, a guide groove 202 may be formed in the side wall of the release bearing 2 in the axial direction. The guide posts 3 are arranged in the shell 5. The guide post 3 is located in the guide groove 202.

In addition, in order to always keep the release bearing 2, the drive pulley 9 and the clutch ball 4 effectively attached together and improve the timeliness of the reset of the release bearing 2, an elastic member capable of making the release bearing 2 have a tendency of moving towards the drive pulley 9 can be arranged on the release bearing 2. The elastic member may be a spring. Preferably a tension spring, a compression spring, a torsion spring or a disc spring.

In order to further improve the control precision of the motor, the feedback can be realized directly through a position signal of the clutch driving motor; a linear position sensor may also be provided at the release bearing 2; thereby realizing the closed-loop control of the signal.

The clutch driving motor can be a permanent magnet synchronous motor or a BLDC control type motor.

In a preferred embodiment of the present invention, a speed reducer 6 is disposed at a free end of the clutch driving motor. The driving wheel 9 is arranged on the speed reducer 6. Preferably, the speed reducer 6 is a geared, worm and gear, or cycloidal gear type speed reducer.

The working principle is as follows:

the embodiment of the present invention will be described by taking an example in which the clutch 1 is disengaged when the release bearing 2 moves toward the clutch 1.

Referring to fig. 3, when the clutch 1 needs to be disengaged, the motor stator 7 drives the motor rotor 8 to rotate, and further drives the speed reducer 6 and the driving wheel 9 to rotate; the driving wheel 9 drives the clutch ball 4 to roll through the clutch groove 11 arranged on the driving wheel, and further drives the release bearing 2 to move towards the clutch 1, the moving plate 201 on the release bearing 2 drives the release direction of the clutch 1 to move forwards, and when the clutch ball 4 rolls into the release platform 12, the clutch 1 realizes the release action.

Referring to fig. 4, when the clutch 1 needs to be combined, the motor stator 7 drives the motor rotor 8 to rotate in the reverse direction, and further drives the speed reducer 6 and the driving wheel 9 to rotate in the reverse direction; the action wheel 9 drives the clutch ball 4 to roll through the clutch groove 11 arranged on the action wheel, under the action of the elastic part, the release bearing 2, the clutch ball 4 and the action wheel 9 are always effectively attached together, the clutch ball 4 can roll along the clutch groove 11 and returns to the deepest part of the clutch groove 11, and the clutch 1 realizes the combination action.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims

1. An automatic clutch actuator, characterized by: the clutch device comprises a shell and a clutch driving motor, wherein a driving wheel is arranged on the clutch driving motor, a release bearing is arranged in the shell in a sliding mode, at least one clutch groove is formed in at least one surface, opposite to the driving wheel and the release bearing, in the circumferential direction, the depth of the clutch groove is gradually changed, and a clutch ball is arranged in the clutch groove.

2. The automatic clutch actuator of claim 1, wherein: clutch and action wheel are located release bearing's both sides respectively, release bearing's one of them one end is provided with the rotor, and the adjacent action wheel of one end in addition, the rotor is connected with the clutch, the separation and reunion ball can expose partly at least when being in the shallower position in separation and reunion groove, separation and reunion driving motor includes motor stator and electric motor rotor, the action wheel sets up on electric motor rotor.

3. The automatic clutch actuator of claim 1, wherein: the clutch device comprises a driving wheel and/or a release bearing, and is characterized in that the number of the clutch grooves is three, the clutch grooves are uniformly distributed on opposite surfaces of the driving wheel and/or the release bearing, and a clutch ball is arranged in each clutch groove.

4. An automatic clutch actuator according to any of claims 1 to 3, characterized in that: the separation and reunion groove includes separation platform, combination platform and transition wedge face, the separation platform is located the shallow position department of separation and reunion groove depth, the wheel face of separation platform and action wheel is parallel, the combination platform is located the deep position department of separation and reunion groove depth, the transition wedge face is located between separation platform and the combination platform.

5. The automatic clutch actuator of claim 1, wherein: a guide groove is formed in the side wall of the release bearing along the axial direction, a guide post is arranged in the shell, and the guide post is located in the guide groove.

6. The automatic clutch actuator of claim 1, wherein: the release bearing is provided with an elastic member which can make the release bearing have a tendency to move towards the driving wheel.

7. The automatic clutch actuator of claim 1, wherein: the clutch driving motor is provided with position signal feedback, or a linear position sensor is arranged at the position of the release bearing.

8. The automatic clutch actuator of claim 1, wherein: the central axis of the clutch groove is in a circular ring shape concentric with the driving wheel; or the clutch grooves are in a radial shape which diverges outwards from the center and do not coincide with the radial direction of the driving wheel.

9. The automatic clutch actuator of claim 8, wherein: the clutch groove is provided with a plurality of end-to-end connected rings, and the central axis of the clutch groove is in a circular ring shape concentric with the driving wheel.

10. The automatic clutch actuator of claim 1, wherein: the free end of the clutch driving motor is provided with a speed reducer, and the driving wheel is arranged on the speed reducer.