CN220378753U - Electric control clutch actuating mechanism - Google Patents

Abstract

The utility model provides an electric control clutch actuating mechanism which comprises an actuating motor, a transmission mechanism and an actuating master pump, wherein the transmission mechanism comprises a worm, a worm wheel, a cam, a rotating shaft and a push rod, the worm is connected with the output end of the actuating motor, the worm wheel is meshed with the worm, and the rotating shaft is supported with a box body through a bearing; the push rod is in linear connection with a piston of the execution master pump, and the worm wheel and the cam are both fixed with the rotating shaft; the executing motor drives the worm to be meshed with the worm wheel, the rotation of the worm wheel enables the cam to rotate, and the cam rotates to be contacted with the push rod to push the push rod to move linearly, so that the piston rod of the executing master cylinder is pushed to move. The utility model is different from the prior art in that the force transmitted by the transmission mechanism to the actuating master cylinder does not have radial force, thereby solving the technical problems of increasing the energy consumption, reducing the service life of the master cylinder and increasing the manufacturing cost of the master cylinder in the prior art that the friction force exists between the master cylinder and the piston in the radial direction.

Description

Electric control clutch actuating mechanism

Technical Field

The utility model relates to the technical field of automobile accessories, in particular to an electric control clutch actuating mechanism.

Background

The automatic control of the clutch is a key technology in a mechanical automatic transmission, the performance of the transmission and even the whole vehicle can be directly influenced by the quality of the automatic control performance, and a clutch executing mechanism is a basis and key for realizing the automatic control of the clutch.

The application number is 202222044380.1, the patent name is a novel automobile automatic clutch mechanism, a driving executing motor is connected with a worm through a coupler, a worm wheel and an auxiliary wheel disc are fixed on the same shaft and are connected through a spring, the worm wheel and the auxiliary wheel disc are flexibly connected, the freedom degree is only in the radial direction, a stroke position sensor is arranged on the axis of the worm wheel, a clutch position sensor is arranged on the auxiliary wheel disc, a master pump push rod is fixed on the auxiliary wheel disc, and the clutch master pump is connected with a clutch cylinder of a vehicle through an oil pipe. The utility model has the advantages of simple structure, low cost, accurate operation, easy maintenance and the like.

The utility model patent with the application number of 202210381133.2 relates to a clutch operating mechanism, which comprises an execution motor assembly and a transmission device, wherein the transmission device comprises a worm, a worm wheel, a transmission gear shaft, a push rod and a shell, an output shaft of the execution motor assembly is connected with the worm, the worm is meshed with the worm wheel, the worm wheel is sleeved on the transmission gear shaft, a rack meshed with the transmission gear shaft is arranged on the push rod, one end of the push rod is fixedly connected with a clutch cylinder, the worm wheel, the transmission gear shaft and the push rod are all arranged in the shell, the clutch operating mechanism uses an automatically-controlled execution motor as a power source, and transmits power to the push rod to push a clutch cylinder through a worm wheel-worm structure and a transmission gear shaft rack structure, the clutch cylinder pushes a shifting fork, and the shifting fork pushes a diaphragm spring, so that the separation and the connection actions of a wheel clutch are automatically executed are realized.

The utility model patent with the patent name of 201510848608.4 is an automatic clutch actuating mechanism, an output shaft of an actuating motor extends into a box body and is connected with a worm, the worm is meshed with a sector tooth part at the upper end of a worm wheel, the right end of the lower part of the worm wheel is hinged with a push rod of the clutch main pump extending into the box body, a circular arc-shaped linear guide rail is arranged on the left side surface of the lower part of the worm wheel, a part of wheel body of a guide wheel is positioned in the linear guide rail, the guide wheel is arranged at the right end of the guide rod, the left end of the guide rod extends into a sleeve, the left end of the sleeve is hinged with an end cover arranged in the box body, a spring is sleeved on the sleeve, and the spring is in a normal pressure shrinkage state. The clutch has the advantages of reasonable design, easy implementation, simple and compact structure, small volume, light weight, low cost and high transmission efficiency, can ensure smoothness, accuracy and reliability of the clutch engagement and disengagement process, is applicable to various types of automobiles, and has good universality.

The utility model patent with the application number of 201210363864.0 and the patent name of clutch driving device, clutch driving system and vehicle, the clutch driving device comprises a power source (2), a transmission mechanism (3), a push rod (4) and a piston cylinder (5), wherein the transmission mechanism (3) is connected with the power source (2) and hinged with one end of the push rod (4) so as to convert the rotary motion of the power source (2) into the linear motion of the push rod (4), and the other end of the push rod (4) is connected with a piston (51) of the piston cylinder (5) so as to push the piston (51) to move in the piston cylinder (5). The clutch driving device increases the reliability of the clutch driving device by driving the slave cylinder to drive the clutch after the oil pressure is built in the piston cylinder. In addition, the utility model is not limited by the air source in the vehicle, and the clutch driving device can be flexibly arranged. In addition, the utility model also discloses a clutch driving system using the clutch driving device and a vehicle comprising the clutch driving system.

The clutch actuators in the above 4 patents are all configured such that an actuator motor transmits power to a piston of an actuator pump through a transmission mechanism, and the actuator motor transmits rotational motion to the piston of the pump through a transmission member such as a worm wheel, that is, the actuator motor rotationally pushes the piston. It should be noted that, in the 2 nd, 3 rd and 4 th patents, although the power of the actuating motor is transmitted to the components such as the rack and the push rod through the worm and the worm wheel, so that the rotary motion is converted into the linear motion, in practice, the piston is connected with the push rod in a straight line, the piston and the push rod are equivalent to a whole, and in this way, when the push rod pushes the actuating master cylinder to work, the push rod and the actuating master cylinder form an angle in the axial direction, so that the actuating master cylinder piston is stressed radially, thereby generating friction force between the actuating master cylinder piston and the inner wall of the actuating master cylinder, and increasing energy consumption; the abrasion of the piston and the inner wall of the execution master cylinder is increased, and the service life is shortened; and at the same time, the material requirements for the inner wall of the executive master pump are increased, and the cost is increased.

Disclosure of Invention

Aiming at the defects that in the clutch actuating mechanism in the prior art, the power of an actuating motor is transmitted to a piston of a master cylinder in a rotary mode, so that the radial stress exists between the master cylinder and the piston, the friction force exists in the radial direction of the master cylinder, the energy consumption is increased, the service life of the master cylinder is reduced, and the manufacturing cost of the master cylinder is increased, the utility model provides an electric control clutch actuating mechanism.

The above object of the present utility model is achieved by the following technical solutions:

the electric control clutch actuating mechanism comprises an actuating motor, a transmission mechanism and an actuating master pump, wherein the transmission mechanism comprises a worm, a worm wheel, a cam, a rotating shaft and a push rod, the worm is connected with the output end of the actuating motor, the worm wheel is meshed with the worm, and the rotating shaft is supported with the box body through a bearing; the push rod is in linear connection with a piston of the execution master pump, and the worm wheel and the cam are both fixed with the rotating shaft; the executing motor drives the worm to be meshed with the worm wheel, the rotation of the worm wheel enables the cam to rotate, and the cam rotates to be contacted with the push rod to push the push rod to move linearly, so that the piston rod of the executing master cylinder is pushed to move.

The utility model aims at the defects of the prior art, and improves the structure of a clutch actuating mechanism to enable the power of an actuating motor to be transmitted to a master pump piston in a linear mode. The specific process is as follows: the executing motor, the worm and the worm wheel are fixed with the rotating shaft, the rotation of the worm wheel drives the cam which is also fixed with the rotating shaft to rotate, and the rotation of the cam pushes the push rod to move linearly, so that the piston rod of the executing master pump is pushed to move. According to the structure of the utility model, the push rod is not subjected to radial force, so that an angle between the push rod and the execution master cylinder in the axial direction is not formed, and the master cylinder piston is not subjected to radial force. The technical problems of friction force between the master cylinder and the piston in the radial direction, increased energy consumption, reduced service life of the master cylinder and increased manufacturing cost of the master cylinder in the prior art are solved.

Further, a rotatable rolling element is fixed at one end of the push rod, facing the worm wheel, the rotation plane of the rolling element is parallel to the rotation plane of the cam, and the cam is contacted with the rolling element to drive the rolling element to rotate.

Further, the rolling element comprises a mounting seat and a bearing, wherein the mounting seat is fixed with the end part of the push rod, the mounting seat is U-shaped, the bearing is positioned in the U-shaped mounting seat, and the bearing is movably connected with two opposite side surfaces of the U-shaped mounting seat through a shaft; the rotation plane of the bearing is parallel to the rotation plane of the cam, and the cam is in contact with the bearing.

Further, the worm gear is fan-shaped.

Further, the auxiliary device comprises an elastic piece and a rocker arm, one end of the elastic piece is fixed with the box body, the other end of the elastic piece is movably connected with the rocker arm, the other end of the rocker arm is fixed with the rotating shaft, and the worm wheel drives the rocker arm to rotate.

When the worm wheel drives the cam to rotate, the auxiliary device provides a force, so that the power of the execution motor can be reduced, and the cost is reduced. The specific process is as follows: after the worm wheel rotates, the elastic piece forms an angle with the rocker arm on the cam structure and then has pushing force, so that the rotating force pushes the cam structure to rotate. Preferably, the elastic member is a spring.

Because the rocker arm needs to rotate, the elastic piece needs to push the rocker arm towards the rotating direction of the cam, so the rocker arm and the elastic piece need to be movably connected, and the connecting mode of the elastic piece and the rocker arm cannot adopt a fixed connection mode. The movable connection mode can be hinge connection, pressure contact and the like.

Preferably, the movable connection of the other end of the elastic piece with the rocker arm means that the elastic piece is in pressure contact with the rocker arm; a spring seat is arranged at the other end of the elastic piece, and a pin shaft is arranged at one end of the rocker arm, which is contacted with the elastic piece; the spring seat is provided with a groove, the pin shaft is accommodated in the groove, and pressure is always arranged between the elastic piece and the pin shaft.

The elastic piece is in pressure contact with the rocker arm, so that the parts can be conveniently disassembled and assembled.

Furthermore, the pin shaft is transversely arranged and perpendicular to the rotation plane of the rocker arm, a groove with an opening facing the rocker arm is formed in the spring seat, and the width of the opening of the groove is larger than or equal to the outer diameter of the pin shaft.

Further, a hole is formed in one end, connected with the rotating shaft, of the rocker arm, and the rocker arm is connected with the rotating shaft in an interference fit mode through the hole.

Further, the cam is fixed with the rocker arm, and the cam is fixedly connected with the rotating shaft through the rocker arm.

Furthermore, an anti-rotation block is also fixed on the rocker arm, one end of the anti-rotation block is fixed with the rocker arm, and the other end of the anti-rotation block is fixed with the worm wheel.

The anti-rotation block structure and the connection mode are arranged to limit the relative movement between the cam and the worm wheel.

Furthermore, one end of the anti-rotation block is fixed with the rocker arm, the other end of the anti-rotation block is provided with a pin hole, the worm wheel is also provided with a pin hole with the same size, and a pin penetrates between the two pin holes, so that the anti-rotation purpose is achieved.

Compared with the prior art, the utility model has the following beneficial effects:

the electric control clutch actuating mechanism comprises an actuating motor, a transmission mechanism and an actuating master cylinder, wherein the power of the actuating motor is transmitted to the actuating master cylinder through the transmission mechanism. The specific transmission process is as follows: the actuating motor transmits power to the worm, the worm transmits power to the worm wheel, the worm wheel is fixed with the rotating shaft, the rotation of the worm wheel drives the cam which is also fixed with the rotating shaft to rotate, and the rotation of the cam pushes the push rod to linearly move, so that the piston rod of the actuating master pump is pushed to move. Further, an auxiliary device is also arranged, the rotation of the cam is assisted by utilizing elastic force, the power of the execution motor is reduced, and the cost is reduced. The auxiliary device is ingenious in structural design and comprises an elastic piece and a rocker arm, the rocker arm is fixed with the rotating shaft, the elastic piece is movably connected with the rocker arm, and after the rotating shaft drives the rocker arm to rotate and form a certain angle with the elastic piece, the elastic piece stretches to further push the rocker arm to rotate, and the cam is indirectly pushed to rotate. The utility model solves the defect of radial stress in the prior art and has the advantages of simple structure and convenient use.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a block diagram (perspective view one) of an electrically controlled clutch actuator.

Fig. 2 is a block diagram (a second perspective view) of the electrically controlled clutch actuator.

Fig. 3 is a structural view of the elastic member.

Fig. 4 is a diagram showing the construction of the rocker arm, cam and anti-rotation block.

Fig. 5 is a schematic diagram of the auxiliary device cooperating with the transmission mechanism.

Fig. 6 shows the auxiliary device and the transmission mechanism in principle (after the rocker arm rotates a certain angle).

The main pump 15 is implemented by the execution motor 1, the worm 2, the worm wheel 3, the cam 4, the rotating shaft 5, the push rod 6, the rolling piece 7, the mounting seat 71, the bearing 72, the rocker arm 8, the spring 9, the spring seat 10, the groove 11, the anti-rotation block 12, the pin shaft 13, the anti-rotation pin 14.

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawings, but the utility model can be implemented in a number of different ways, which are defined and covered by the claims.

Example 1

From the background analysis, it is known that the force transmitted from the actuating motor to the actuating pump by the transmission mechanism in the prior art has a component force in the radial direction, that is, the force transmitted to the push rod is a rotating force. To remove the component of the force in the radial direction of the actuation pump, the force transmitted to the push rod is made to be the force in the direction of the actuation pump piston rod (i.e. the axial force). The specific structure is as follows:

an electric control clutch actuating mechanism is shown in fig. 1 and 2, and comprises an actuating motor 1, a transmission mechanism and an actuating master pump 15, wherein the transmission mechanism comprises a worm 2, a worm wheel 3, a cam 4, a rotating shaft 5 and a push rod 6, the worm 2 is connected with the output end of the actuating motor 1, the worm wheel 3 is meshed with the worm 2, and the worm wheel 3 is in a sector shape; the rotating shaft 5 is supported with the box body through a bearing; the push rod 6 is connected with a piston of the execution master cylinder 15 in a straight line, and the worm wheel 3 and the cam 4 are both fixed with the rotating shaft 5; the actuating motor 1 drives the worm 2 to be meshed with the worm wheel 3, the rotation of the worm wheel 3 rotates the cam 4, and the cam 4 rotates to be contacted with the push rod 6 to push the push rod 6 to linearly move, so that the piston rod of the actuating master pump 15 is pushed to move.

One end of the push rod 6 facing the worm wheel 3 is fixed with a rotatable rolling element 7, the rotation plane of the rolling element 7 is parallel to the rotation plane of the cam 4, and the cam 4 contacts with the rolling element 7 to drive the rolling element 7 to rotate.

The rolling element 7 comprises a mounting seat 71 and a bearing 72, wherein the mounting seat 71 is fixed with the end part of the push rod 6, the mounting seat 71 is U-shaped, the bearing 72 is positioned in the U-shaped mounting seat 71, and the bearing 72 is movably connected with two opposite side surfaces of the U-shaped mounting seat 71 through a shaft; the rotation plane of the bearing 72 is parallel to the rotation plane of the cam 4, and the cam 4 is in contact with the bearing 72.

The auxiliary device comprises an elastic piece and a rocker arm 8, the elastic piece is preferably a spring 9, one end of the spring 9 is fixed with the box body, the other end of the spring 9 is movably connected with the rocker arm 8, the other end of the rocker arm 8 is in interference fit with the rotating shaft 5, and the worm wheel 3 drives the rocker arm 8 to rotate. As shown in fig. 2, an anti-rotation block 12 is further fixed on the rocker arm 8, one end of the anti-rotation block 12 is fixed with the rocker arm 8, and the other end is fixed with the worm wheel 3. As shown in fig. 4, the cam 4, the rocker arm 8, and the anti-rotation block 12 are integrally structured (simply referred to as an integrated structure). As shown in fig. 2, one end of the anti-rotation block 12 is fixed with the rocker arm 8, the other end is provided with a pin hole, the worm wheel 3 is also provided with a pin hole with the same size, and a pin 14 penetrates between the two pin holes, so that the aim of preventing the integrated structure from rotating relative to the worm wheel 3 is fulfilled.

The other end of the spring 9 is movably connected with the rocker arm 8, namely the spring 9 is in pressure contact with the rocker arm 8; a spring seat 10 is arranged at the other end of the spring 9, and a pin shaft 13 is arranged at one end of the rocker arm 8, which is contacted with the spring 9; the spring seat 10 is provided with a groove 11, the pin shaft 13 is accommodated in the groove 11, and pressure is always arranged between the spring 9 and the pin shaft 13. The pin shaft 13 is transversely arranged and perpendicular to the rotation plane of the rocker arm 8, a groove 11 with an opening facing the rocker arm 8 is formed in the spring seat 10, and the opening width of the groove 11 is larger than or equal to the outer diameter of the pin shaft 13.

As shown in fig. 4, the rocker arm 8 is shaped like an 8, holes are formed in two ends of the rocker arm, the hole in one end is in interference fit with the rotating shaft 5, and the pin shaft 13 is in interference fit with the hole in the other end.

The executing motor 1 transmits power to the worm 2, the worm 2 is transmitted to the worm wheel 3, the worm wheel 3 is fixed with the rotating shaft 5, and the rotation of the worm wheel 3 drives the integrated structure which is in interference fit on the rotating shaft 5 to synchronously rotate, so that the cam 4 in the integrated structure pushes the push rod 6 to linearly move. The rocker arm 8 in the integrated structure synchronously rotates along with the rotating shaft 5, and after the spring 9 forms an angle with the rocker arm 8, the spring 9 has pushing force on the rocker arm 8 to assist in pushing the cam 4. As shown in fig. 5 and 6, which are respectively an initial position and an operating state, it can be seen from fig. 6 that after the rocker arm 8 rotates with the rotation shaft 5 by a certain angle, an angle is formed between the rocker arm 8 and the spring 9, so that the spring 9 spreads to release the elastic force, and further pushes the cam 4 to rotate.

The working principle is as follows:

the initial position is shown in fig. 1 and 5, at this time, the executing motor 1 is stationary, the worm 2 and the cam mechanism with the worm wheel 3 are in a self-locking state, and the whole executing mechanism is in a stationary state; the spring 9 is now in a compressed state; the push rod 6 is tightly attached to the wall of the cam 4 with a bearing end under the action of the oil pressure reverse thrust of the master pump 15;

in the execution working state, the execution motor 1 drives the worm 2 to rotate right, the worm 2 drives the cam mechanism with the worm wheel 3 to rotate left, the spring 9 releases the power to push the cam 4 mechanism to rotate left, at the moment, the cam 4 rotates left to drive the push rod 6, and the bearing end of the push rod 6 moves leftwards along with the contour of the cam 4 to push the execution master pump 15 to work;

in a return working state, the executing motor 1 drives the worm 2 to rotate left, and the worm 2 drives the cam mechanism with the worm wheel 3 to rotate right to an initial position; the right-hand rotary compression booster spring 9 of the cam 4 mechanism returns to the initial position; the pushrod 6 returns to the initial position when the hydraulic reverse thrust of the master pump 15 is performed.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. The electric control clutch actuating mechanism comprises an actuating motor, a transmission mechanism and an actuating master pump, and is characterized in that the transmission mechanism comprises a worm, a worm wheel, a cam, a rotating shaft and a push rod, the worm is connected with the output end of the actuating motor, the worm wheel is meshed with the worm, and the rotating shaft is supported with a box body through a bearing; the push rod is in linear connection with a piston of the execution master pump, and the worm wheel and the cam are both fixed with the rotating shaft; the executing motor drives the worm to be meshed with the worm wheel, the rotation of the worm wheel enables the cam to rotate, and the cam rotates to be contacted with the push rod to push the push rod to move linearly, so that the piston rod of the executing master cylinder is pushed to move.

2. The electrically controlled clutch actuator of claim 1, wherein a rotatable roller is fixed to an end of the push rod facing the worm wheel, a rotation plane of the roller is parallel to a rotation plane of the cam, and the cam contacts the roller to rotate the roller.

3. The electrically controlled clutch actuator of claim 2, wherein the rolling element comprises a mounting seat and a bearing, the mounting seat is fixed with the end of the push rod, the mounting seat is U-shaped, the bearing is positioned in the U-shaped mounting seat, and the bearing is movably connected with two opposite side surfaces of the U-shaped mounting seat through a shaft; the rotation plane of the bearing is parallel to the rotation plane of the cam, and the cam is in contact with the bearing.

4. The electrically controlled clutch actuator of claim 1, wherein said worm gear is sector-shaped.

5. The electrically controlled clutch actuator of claim 1, further comprising an auxiliary device, wherein the auxiliary device comprises an elastic member and a rocker arm, one end of the elastic member is fixed with the case, the other end of the elastic member is movably connected with the rocker arm, the other end of the rocker arm is fixed with the rotating shaft, and the worm wheel drives the rocker arm to rotate.

6. The electrically controlled clutch actuator of claim 5, wherein the movable connection of the other end of the elastic member to the rocker arm means that the elastic member is in pressure contact with the rocker arm; a spring seat is arranged at the other end of the elastic piece, and a pin shaft is arranged at one end of the rocker arm, which is contacted with the elastic piece; the spring seat is provided with a groove, the pin shaft is accommodated in the groove, and pressure is always arranged between the elastic piece and the pin shaft.

7. The electrically controlled clutch actuator of claim 6, wherein the pin is disposed transversely and perpendicular to the plane of rotation of the rocker arm, the spring seat is provided with a recess opening toward the rocker arm, and the width of the recess opening is greater than or equal to the outer diameter of the pin.

8. The electrically controlled clutch actuator of claim 5, wherein the end of the rocker arm connected to the rotating shaft is provided with a hole, and the rocker arm is connected to the rotating shaft in an interference fit manner through the hole.

9. The electrically controlled clutch actuator of claim 5, wherein the cam is fixed to the rocker arm, and wherein the cam is fixedly connected to the rotating shaft via the rocker arm.

10. The electrically controlled clutch actuator of claim 9, wherein an anti-rotation block is further fixed to the rocker arm, one end of the anti-rotation block being fixed to the rocker arm, and the other end being fixed to the worm wheel.