CN211550333U

CN211550333U - Motor drive wet clutch and car

Info

Publication number: CN211550333U
Application number: CN201922338140.0U
Authority: CN
Inventors: 樊雪来; 唐立中; 宋建军
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-09-22
Anticipated expiration: 2029-12-23

Abstract

The utility model relates to an automotive equipment and technical field disclose a motor drive wet clutch and car, motor drive wet clutch include output disc, hollow screw, motor and follow the casing that the first direction was provided with the shaft barrel. An input shaft penetrates through the shaft cylinder, one end of the input shaft is connected with the engine, and the other end of the input shaft is connected with the friction assembly; the output disc is rotatably sleeved on the periphery of the shaft barrel and is arranged at intervals with the friction assembly; the hollow lead screw is sleeved on the periphery of the shaft barrel in a sliding manner along a first direction, a nut is connected to the hollow lead screw in a transmission manner, and a pressing assembly used for pushing the friction assembly onto the output disc is connected to the end of the hollow lead screw; the motor is including being fixed in the outer stator on the casing and overlapping the inner rotor that is fixed in on the nut, and the inner rotor can drive the nut and rotate, makes hollow lead screw drive compress tightly the subassembly and moves along first direction to bulldoze friction pack on the output dish. The utility model discloses compact structure, transmission precision height, use that wearing and tearing are little and longe-lived.

Description

Motor drive wet clutch and car

Technical Field

The utility model relates to an automotive equipment and technical field especially relate to a motor drive wet clutch and car.

Background

The clutch is a common component in mechanical transmission of automobiles, and can separate or connect a transmission system at any time.

Most current wet clutch passes through hydraulic drive, because the compressibility of liquid, the action response of clutch can receive certain influence, and it needs solitary hydraulic actuator simultaneously, has the structure complicacy, and occupation space is big, and the higher shortcoming of the cleanliness requirement to the system. And a few wet clutches are driven by a motor and a release fork to realize clutching. The release fork plays a role in lever amplification, the driving force of the motor is amplified and then applied to the clutch to realize the separation from the transmission system, but the release fork has certain abrasion in the using process, and the torque control precision of the clutch is further influenced.

Therefore, it is desirable to provide a motor-driven wet clutch and an automobile, which can solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motor drive wet clutch, its compact structure, transmission precision height, use wearing and tearing little and longe-lived.

To achieve the purpose, the utility model adopts the following technical proposal:

a motor driven wet clutch comprising:

the engine comprises a shell, a shaft cylinder, an input shaft, a friction component and a control device, wherein the shaft cylinder is arranged on the shell along a first direction, the input shaft penetrates through the shaft cylinder, one end of the input shaft is used for being connected with an engine, and the other end of the input shaft is connected with the friction component;

the output disc is rotatably sleeved on the periphery of the shaft cylinder and is arranged at intervals with the friction assembly;

the hollow screw rod can be sleeved on the periphery of the shaft barrel in a sliding manner along the first direction, a nut is connected to the hollow screw rod in a transmission manner, and a pressing assembly used for pushing the friction assembly onto the output disc is connected to the end of the hollow screw rod;

the motor comprises an outer stator fixed on the shell and an inner rotor sleeved and fixed on the nut, the inner rotor can drive the nut to rotate, so that the hollow lead screw drives the pressing assembly to move along the first direction, and the friction assembly is pushed and pressed on the output disc.

Optionally, a first guide sliding groove is formed in the outer peripheral wall of the shaft barrel along the first direction, a second guide sliding groove which is in one-to-one correspondence with the first guide sliding groove is formed in the inner peripheral wall of the hollow lead screw along the first direction, and sliding balls are assembled between the first guide sliding groove and the second guide sliding groove.

Optionally, the nut includes a nut body and a ball, the ball is accommodated in a thread groove formed in an inner hole of the nut body, and the nut body is in rolling contact with the hollow screw through the ball.

Optionally, the compressing assembly comprises a push disc and a release bearing, the release bearing is sleeved on the shaft barrel, the hollow lead screw is movably connected with the push disc through the release bearing, and the hollow lead screw can move along the first direction, so that the push disc pushes and presses the friction assembly.

Optionally, the friction assembly comprises:

the input disc is coaxially fixed on one end of the input shaft, which is not connected with the engine;

and the friction piece is arranged on the periphery of the input disc in a surrounding manner, and the friction piece and the output disc are arranged at intervals.

Optionally, the output disc is sleeved on the outer periphery of the shaft cylinder through an angular contact ball bearing.

Optionally, there are two angular contact ball bearings, and the two angular contact ball bearings are sleeved on the outer periphery of the shaft barrel at intervals along the first direction.

Optionally, the input shaft is inserted into the shaft cylinder through a ball bearing.

Optionally, the input shaft is further inserted into the shaft cylinder through a needle bearing.

Another object of the present invention is to provide a car, the motor-driven wet clutch assembled by the car has the advantages of compact structure, high transmission precision, small wear and long service life.

an automobile comprising a motor-driven wet clutch as described above.

The utility model has the advantages that:

the utility model discloses a cover is equipped with and to follow gliding hollow lead screw of first direction on the bobbin, the transmission is connected with the nut on the hollow lead screw, the inner rotor cover of motor is established and is fixed on the nut, it is rotatory to drive the nut through the inner rotor, and then drive hollow lead screw and slide along first direction, make hollow lead screw's end connection's the subassembly that compresses tightly bulldoze friction pack, and support friction pack and press the output disc on, realize that the transmission of input shaft and output disc is connected, it is rotatory through the motor drive nut, and then promote hollow lead screw and remove along first direction, realize motor drive wet clutch's closure, it is high to have transmission precision, the little and longe-lived advantage of wearing and tearing, and the inner rotor cover of motor establishes in the periphery of nut, the motor sets up in the casing, make motor drive wet clutch's structure.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of a motor-driven wet clutch provided by the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partially enlarged view at B in fig. 1.

In the figure:

x-a first direction;

1-a shell; 11-shaft cylinder; 111-a first guide runner; 2-an input shaft; 21-a ball bearing; 22-needle bearings; 3-a friction component; 31-an input disc; 32-a friction member; 4-an output tray; 41-angular contact ball bearings; 42-a frictional abutment; 5-a hollow lead screw; 51-a second guide runner; 6-a nut; 61-a nut body; 62-a ball bearing; 7-a motor; 71-an outer stator; 72-an inner rotor; 8-a compression assembly; 81-push plate; 82-a release bearing; 9-sliding balls.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1-2, the present embodiment proposes a motor-driven wet clutch mainly used for vehicle braking, and a vehicle equipped with the same, in which the X direction indicates the first direction. The motor-driven wet clutch comprises a shell 1, an input shaft 2, a friction assembly 3, an output disc 4, a hollow lead screw 5, a nut 6, a motor 7 and a compression assembly 8. The motor 7 includes an outer stator 71 and an inner rotor 72. A shaft barrel 11 is arranged on the shell 1 along a first direction, an input shaft 2 penetrates through the shaft barrel 11, one end of the input shaft 2 is connected with an engine (not shown in the figure), and the other end of the input shaft 2 is connected with the friction component 3; the output disc 4 is rotatably sleeved on the periphery of the shaft barrel 11, and the output disc 4 and the friction assembly 3 are arranged at intervals; the hollow screw 5 is sleeved on the periphery of the shaft barrel 11 in a sliding manner along a first direction, a nut 6 is connected to the hollow screw 5 in a transmission manner, and a pressing assembly 8 used for pushing the friction assembly 3 onto the output disc 4 is connected to the end part of the hollow screw 5; the outer stator 71 of the motor 7 is fixed on the shell 1, the inner rotor 72 of the motor 7 is sleeved and fixed on the nut 6, and the inner rotor 72 can drive the nut 6 to rotate, so that the nut 6 drives the hollow lead screw 5 to drive the pressing component 8 to move along the first direction, and the friction component 3 is pushed and pressed on the output disc 4. The output disc 4 is used for connecting an output shaft (not shown in the figure) and further outputting a driving force.

The shaft tube 11 of this embodiment is sleeved with a hollow lead screw 5 capable of sliding along a first direction, the hollow lead screw 5 is in transmission connection with a nut 6, an inner rotor 72 of a motor 7 is sleeved and fixed on the nut 6, the inner rotor 72 drives the nut 6 to rotate, the hollow lead screw 5 is driven to slide along a first direction, so that the pressing component 8 connected with the end part of the hollow lead screw 5 pushes the friction component 3 and presses the friction component 3 against the output disc 4 to realize the transmission connection of the input shaft 2 and the output disc 4, the nut 6 is driven to rotate by the motor 7, so that the hollow lead screw 5 moves along the first direction, the closing of the wet clutch driven by the motor is realized, and the wet clutch has the advantages of high transmission precision, small use abrasion and long service life, and the inner rotor 72 of the motor 7 is sleeved and fixed on the nut 6, and the motor 7 is arranged in the shell 1, so that the structure of the motor-driven wet clutch is more compact.

Specifically, in order to realize that the hollow lead screw 5 can slide on the shaft barrel 11 along the first direction, as shown in fig. 1-2, in the present embodiment, a first guide sliding groove 111 is formed on the outer circumferential wall of the shaft barrel 11 along the first direction, a second guide sliding groove 51 is formed on the inner circumferential wall of the hollow lead screw 5 along the first direction, the second guide sliding groove 51 is arranged in one-to-one correspondence with the first guide sliding groove 111, and the sliding ball 9 is assembled between the first guide sliding groove 111 and the second guide sliding groove 51. The second guide sliding groove 51 and the first guide sliding groove 111 mainly play a role in limiting and guiding, and can ensure that the hollow lead screw 5 only slides along the first direction and cannot rotate around the axis of the shaft barrel 11 when bearing the rotation driving force of the nut 6, so that the transmission driving effectiveness of the nut 6 is ensured. Specifically, the outer peripheral wall of the shaft tube 11 may be provided with one first guide sliding groove 111, and the inner peripheral wall of the corresponding hollow lead screw 5 may also be provided with one second guide sliding groove 51, where the first guide sliding groove 111 is one in this embodiment, and in other embodiments, the first guide sliding grooves 111 may be two or three.

The fit between the hollow lead screw 5 and the nut 6 of the present embodiment belongs to the fit manner of the nut rotation type hollow lead screw in the prior art, and the hollow lead screw 5 can slide along the first direction under the rotation drive of the nut 6. Specifically, as shown in fig. 2, the nut 6 includes a nut body 61 and balls 62, the balls 62 are accommodated in thread grooves formed in an inner hole of the nut body 61, and the nut body 61 is in rolling contact with the hollow screw 5 via the balls 62, so that rolling contact transmission resistance is small and transmission efficiency is high.

In the embodiment, the hollow screw 5, the nut 6 and the motor 7 are mainly arranged to drive the compressing assembly 8 to move along the first direction, and the structures of the compressing assembly 8 and the friction assembly 3 both adopt common structures in the prior art. Specifically, as shown in fig. 1, the pressing assembly 8 includes a pushing disc 81 and a release bearing 82, the release bearing 82 is sleeved on the shaft tube 11, the hollow lead screw 5 is movably connected with the pushing disc 81 through the release bearing 82, and the hollow lead screw 5 can move along a first direction, so that the pushing disc 81 pushes the friction assembly 3. And release bearing 82 adopts prior art's conventional structure, it mainly includes inner bearing and outer bearing (not sign in the figure), wherein, inner bearing fixed connection is on pushing away set 81, the one end that pushes away set 81 and is close to friction pack 3 runs through output dish 4 and just to friction pack 3 setting, in order to guarantee to support and press on friction pack 3, outer bearing fixed connection is in the one end that hollow lead screw 5 is close to friction pack 3, outer bearing can the pivoted cup joint on the inner bearing, and then guarantee that the rotary motion of pushing away set 81 can not drive hollow lead screw 5 and also rotate, hollow lead screw 5 can be through release bearing 82 to pushing away the thrust force of set 81 transmission along first direction, make the one end that pushing away set 81 is close to friction pack 3 support and press on friction pack 3.

And for the friction assembly 3 it mainly functions as a drive connection for the input shaft 2 and the output disc 4. Specifically, as shown in fig. 1, the friction member 3 includes an input disc 31 and a friction member 32. Wherein, the input disc 31 is coaxially fixed on one end of the input shaft 2 which is not connected with the engine; the friction member 32 is disposed around the input disc 31, and the friction member 32 is spaced apart from the output disc 4, that is, when the push plate 81 does not push the friction member 32, the motor-driven wet clutch is in a disengaged state. When the push plate 81 pushes the friction member 32 in the first direction, the friction member 32 is pressed against the output tray 4. Specifically, as shown in fig. 1, the main body of the output disc 4 is in a hollow annular pie shape, and an annular accommodating space for accommodating the friction element 32 is opened at one end close to the friction assembly 3, and meanwhile, along the first direction, a friction abutting portion 42 is provided at one end of the output disc 4 away from the push disc 81, the friction abutting portion 42 is opposite to the friction element 32, when the push disc 81 pushes the friction element 32 along the first direction, the push disc 32 can be pressed against the friction abutting portion 42, and the input shaft 2 is in transmission connection with the output disc 4 through the input disc 31 and the friction element 32.

In the present embodiment, for the specific assembly of the input shaft 2 and the output disc 4 on the shaft tube 11, as shown in fig. 1, the output disc 4 is fitted around the outer periphery of the shaft tube 11 by the angular ball bearing 41. Further, in the present embodiment, there are two angular contact ball bearings 41, the two angular contact ball bearings 41 are sleeved on the outer periphery of the shaft barrel 11 at intervals along the first direction, and stability and fluency of rotation of the output disc 4 around the shaft barrel 11 are ensured by providing the two angular contact ball bearings 41.

The input shaft 2 is inserted into the shaft tube 11 through the ball bearing 21. Further, the input shaft 2 is also arranged in the shaft barrel 11 through a needle bearing 22, and the stability and the fluency of the rotation of the input shaft 2 are ensured by arranging the ball bearing 21 and the needle bearing 22.

For a clearer understanding of the operation of the motor-driven wet clutch of the present embodiment in engagement and disengagement, reference is now made to fig. 1-2.

1) In the separated state, the friction member 32 and the friction abutment portion 42 on the output disc 4 are in the separated state. When the motor is required to drive the wet clutch to be engaged, the inner rotor 72 of the motor 7 rotates in the positive rotation mode to drive the nut 6 to rotate, the nut 6 drives the hollow lead screw 5 to slide along the first direction to be close to the friction piece 32, the hollow lead screw 5 drives the release bearing 82 to be close to the friction piece 32 along the first direction, the release bearing 82 pushes the push disc 81, the push disc 81 pushes the friction piece 32, the friction piece 32 is pushed and pressed to abut against the friction abutting part 42 on the output disc 4 by the pushing and pressing force, the input shaft 2 is in transmission connection with the output disc 4 through the input disc 31 and the friction piece 32, the input shaft 2 transmits the rotation driving force of the engine to the output disc 4, and power output is achieved. The specific power output can be controlled by the moving distance of the nut 6 driving the hollow lead screw 5 to approach the friction member 32 in the first direction, that is, by controlling the pushing force of the pushing disc 81 pushing the friction member 32.

2) In the engaged state, when the motor-driven wet clutch needs to be disengaged, the inner rotor 72 of the motor 7 rotates reversely to drive the nut 6 to rotate, the nut 6 drives the hollow lead screw 5 to slide away from the friction piece 32 along the first direction, the hollow lead screw 5 drives the release bearing 82 to move away from the friction piece 32 along the first direction, the release bearing 82 no longer pushes the push disc 81, so that the push disc 81 no longer pushes the friction piece 32, the friction piece 32 no longer receives the pushing force and pushes the friction abutting part 42 abutting against the output disc 4, and then under the action of the elastic deformation restoring force of the input disc 31, the friction piece 32 is separated from the friction abutting part 42 on the output disc 4, thereby achieving the disengaging operation of the motor-driven wet clutch.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A motor-driven wet clutch, comprising:

the engine comprises a shell (1), wherein a shaft cylinder (11) is arranged on the shell along a first direction, an input shaft (2) penetrates through the shaft cylinder (11), one end of the input shaft (2) is used for being connected with an engine, and the other end of the input shaft is connected with a friction assembly (3);

the output disc (4) is rotatably sleeved on the periphery of the shaft barrel (11) and is arranged at intervals with the friction assembly (3);

the hollow lead screw (5) is sleeved on the periphery of the shaft barrel (11) in a sliding manner along the first direction, a nut (6) is connected to the hollow lead screw (5) in a transmission manner, and a pressing assembly (8) used for pressing the friction assembly (3) on the output disc (4) is connected to the end part of the hollow lead screw (5);

the motor (7) comprises an outer stator (71) fixed on the shell (1) and an inner rotor (72) fixed on the nut (6) in a sleeved mode, the inner rotor (72) can drive the nut (6) to rotate, and the hollow lead screw (5) drives the pressing assembly (8) to move in the first direction so as to push the friction assembly (3) on the output disc (4).

2. The motor-driven wet clutch according to claim 1, wherein a first guide sliding groove (111) is formed in an outer peripheral wall of the shaft cylinder (11) along the first direction, second guide sliding grooves (51) which are provided in one-to-one correspondence with the first guide sliding grooves (111) are formed in an inner peripheral wall of the hollow lead screw (5) along the first direction, and sliding balls (9) are fitted between the first guide sliding grooves (111) and the second guide sliding grooves (51).

3. Motor-driven wet clutch according to claim 2, characterized in that the nut (6) comprises a nut body (61) and balls (62), the balls (62) being accommodated in threaded grooves made in the inner bore of the nut body (61), and the nut body (61) being in rolling contact with the hollow screw (5) via the balls (62).

4. The motor-driven wet clutch according to claim 1, wherein the pressing member (8) includes a pushing plate (81) and a release bearing (82), the release bearing (82) is disposed on the shaft (11), and the hollow lead screw (5) is movably connected to the pushing plate (81) through the release bearing (82), the hollow lead screw (5) is capable of moving in the first direction to allow the pushing plate (81) to push the friction member (3).

5. Motor-driven wet clutch according to claim 1, characterized in that said friction assembly (3) comprises:

an input disc (31) coaxially fixed to an end of the input shaft (2) to which the engine is not connected;

and the friction piece (32) is arranged on the peripheral side of the input disc (31) in a surrounding manner, and the friction piece (32) and the output disc (4) are arranged at intervals.

6. The motor-driven wet clutch according to claim 1, wherein the output disc (4) is fitted to the outer periphery of the shaft tube (11) through an angular contact ball bearing (41).

7. The motor-driven wet clutch according to claim 6, wherein there are two angular ball bearings (41), and the two angular ball bearings (41) are fitted around the outer circumference of the shaft tube (11) at intervals in the first direction.

8. Motor driven wet clutch according to claim 1, characterized in that the input shaft (2) is arranged through the shaft sleeve (11) by means of ball bearings (21).

9. Motor-driven wet clutch according to claim 8, characterized in that the input shaft (2) is also arranged through the shaft sleeve (11) by means of a needle bearing (22).

10. A motor vehicle, characterized in that it comprises an electric motor driven wet clutch according to any one of claims 1-9.