CN218844913U - Clutch for hybrid power gearbox and mounting assembly thereof - Google Patents

Abstract

The utility model relates to a hybrid vehicle field, more specifically relates to a clutch and installation component for hybrid gearbox, wherein the clutch is including being used for installing piston seat, piston and the spring in the pivot, the piston is equipped with and is used for the first inner circle spline with drive gear meshing and is used for the first transmission portion of pivot complex, the piston is installed and is formed the high-pressure oil pocket between piston groove and the piston groove, piston seat and piston sliding connection, the one end and the piston butt of spring, the other end of spring is used for connecting drive gear. The utility model discloses a mode that the clutch was turned round through adopting the spline to pass replaces the mode that traditional clutch friction disc passed round, has cancelled the use of friction disc, has not only reduced the manufacturing cost of clutch, has still simplified the structure of clutch.

Description

Clutch for hybrid power gearbox and mounting assembly thereof

Technical Field

The utility model relates to a hybrid vehicle field, more specifically relates to a clutch and installation component for hybrid transmission.

Background

In recent years, hybrid electric vehicles have the advantages of energy conservation, emission reduction and the like, the vehicles realize oil-electric hybrid driving running by using a hybrid electric transmission case, the hybrid electric transmission case comprises an engine, a motor, a clutch, a transmission gear and a rotating shaft which is simultaneously connected with the output end of the engine and the input end of the motor, power is provided for closing the clutch by a hydraulic system and an oil circuit arranged in the rotating shaft, the clutch is arranged on the rotating shaft and is connected with the output end of the engine by the rotating shaft, the transmission gear is connected with the input end of the motor, when the clutch is coupled with the transmission gear, the engine is communicated with the motor power, and the vehicles run by oil-electric hybrid driving; when the clutch is decoupled with the transmission gear, the engine does not participate in energy supply of automobile driving, and the automobile runs in pure electric driving mode.

The power coupling and decoupling of the engine and the motor are realized by the action of the clutch, so that the clutch is known to be a core component in a hybrid transmission, and the clutch commonly used in the hybrid automobile is a multi-plate clutch, and the clutch mainly transfers the torque output by the engine by the joint and friction of a friction plate and a steel sheet. The wet clutch for the hybrid power gearbox comprises a piston, an inner support, an outer support, a friction plate and a steel sheet, wherein the friction plate is connected with the inner support through an inner spline, the inner support is connected with a rotating shaft through the inner spline, the outer support is connected with a transmission gear at the input end of a motor, the wet clutch is mainly used for pushing the piston through a hydraulic system to enable the friction plate to be tightly attached to the steel sheet, the inner support is connected with the outer support, therefore, the power output by an engine is coupled with the power of the motor, the friction plate is separated from the steel sheet when the hydraulic pressure is removed, and the power transmission of the engine is interrupted. In order to ensure that enough torque can be transmitted, the clutch generally requires a large enough joint area between the friction plates and the steel sheets to transmit enough torque, so that a plurality of friction plates are needed to improve the joint area to transmit enough power, the friction plates are used as core parts of the clutch, the manufacturing materials depend on import, the cost is high, and the clutch comprises more parts and has a complex integral structure.

SUMMERY OF THE UTILITY MODEL

To the problem that above-mentioned prior art clutch cost is higher, the spare part is many and the structure is complicated, the utility model provides a do not rely on the friction disc to transmit torque's clutch through set up first inner circle spline on the piston to the mode that the friction disc laminating was passed and turn round is replaced to the mode that the spline meshing was passed and is turned round, has cancelled the use of friction disc, has not only reduced the manufacturing cost of clutch, has still simplified the structure of clutch.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides a clutch for hybrid transmission, the clutch includes the piston seat, piston and spring, the piston seat be equipped with be used for with pivot complex first through-hole and install in the pivot through first through-hole, the piston is equipped with be used for with pivot complex second through-hole and install in the pivot through the second through-hole, the piston seat is equipped with the piston groove, the piston install in the piston groove and with the piston groove between form the high-pressure oil pocket, the inner wall of second through-hole is equipped with and is used for making the piston fixed and axially movable's first transmission portion of circumference in the pivot, piston seat and piston sliding connection, the one end and the piston butt of spring, the other end and the drive gear of motor input end of spring are connected, the piston is equipped with the first inner circle spline with drive gear complex.

The clutch is arranged on the rotating shaft, when the pressure in the high-pressure oil cavity rises, the piston is pressed to gradually move axially, one end of the spring is pressed to gradually be compressed, the clutch is connected with the output end of the engine, the transmission gear is connected with the input end of the motor, when a first inner ring spline on the piston is meshed with the transmission gear, the engine is coupled with the power of the motor, and the automobile runs in an oil-electric hybrid driving mode; when the hydraulic pressure is removed, the piston and the spring are not stressed, the elastic potential energy of the spring is gradually released to recover the deformation, the piston is restored to the initial position by the elastic force of the spring and is separated from the transmission gear, the power transmission of the engine is interrupted, and the pure electric power is used for driving the automobile to run.

The piston and the rotating shaft are connected in a flat key connection or spline connection mode, but the torque transmitted by the clutch is large, the working load is large, and the flat key is prone to collapse failure.

When the piston groove is a circular groove, the high-pressure oil cavity is communicated with the hydraulic system through a hydraulic oil path on the rotating shaft, hydraulic oil directly enters the high-pressure oil cavity through the hydraulic oil path on the rotating shaft, but the contact area between the piston and the rotating shaft is large, the abrasion of the piston to the rotating shaft is also large due to the reciprocating motion of the piston, and preferably, the piston groove is an annular groove, the piston reciprocates in the annular groove, the area of the piston in direct contact with the rotating shaft is reduced, and the abrasion of the rotating shaft is reduced.

Furthermore, when the piston slot is an annular slot, a plurality of first oil holes for communicating the high-pressure oil chamber with the hydraulic oil passage on the rotating shaft need to be formed in the piston seat, wherein if the first oil holes are located on the piston seat and perpendicular to the rotating shaft, an oil pipe needs to be added between the piston seat and the rotating shaft to communicate the high-pressure oil chamber with the hydraulic oil passage on the rotating shaft, which may complicate the structure of the clutch.

Preferably, the piston is provided with a cavity, the axial size of the cavity is larger than that of the spring, the first inner ring spline is located in the cavity, and the spring is axially arranged in the cavity and connected with the inner wall of the cavity. The spring is arranged in the cavity, so that a certain sealing effect on the spring can be achieved.

Because the radial dimension of the piston seat is adjusted according to the radial dimension of the piston, the radial dimension of the piston matched with the transmission gear is larger, the required size of the piston seat is also larger, in order to reduce the volume of the clutch, preferably, the piston comprises a transmission block and a piston block, the radial dimension of the piston block is smaller than that of the transmission block, the piston block is arranged in a piston groove and connected with one end of the transmission block, the other end of the transmission block is connected with a spring, and the first inner ring spline, the second inner ring spline and the cavity are arranged on the transmission block. When the hydraulic pressure is removed, the spring pushes the transmission block and the piston block to move together. The radial size of the piston seat can be reduced by dividing the piston into a piston block and a transmission block, so that the size of the clutch is reduced.

Preferably, the piston block and the transmission block are connected by one of integral molding, screw connection, pin connection and welding.

In order to avoid the abrasion of the spring to the rotating shaft in the expansion process, preferably, the piston is provided with a convex ring structure, the spring is sleeved on the convex ring structure, the convex ring structure can avoid the direct contact of the spring and the rotating shaft, and the spring is prevented from generating radial movement or axial movement to cause abrasion to the rotating shaft.

Because the liquid pressure in the high-pressure oil cavity is relatively high, the oil is easy to leak, preferably, the outer wall of the piston block and the inner wall of the piston seat are respectively provided with a first sealing groove and a second sealing groove, and the first sealing ring and the second sealing ring are respectively arranged on the first sealing groove and the second sealing groove. The first sealing ring and the second sealing ring can be used for isolating oil in the high-pressure oil cavity and preventing the oil in the high-pressure oil cavity from overflowing or leaking, the first sealing ring and the second sealing ring can be mounted conveniently respectively, and the first sealing ring and the second sealing ring can be prevented from being separated from the piston seat in the reciprocating motion process of the piston.

Preferably, the first sealing ring and the second sealing ring are one of an O-ring, a V-ring, a rectangular ring and a wedge-shaped ring.

If the spring is directly abutted to the transmission gear at the input end of the motor, the spring repeatedly impacts the transmission gear in the reciprocating motion process of the piston and may cause abrasion to the end face of the transmission gear. The spring and the transmission gear are separated by the spacer bush, so that the abrasion of the end face of the transmission gear caused by the direct contact of the end face of the spring and the end face of the transmission gear is avoided, and the spring is further sealed.

Preferably, the spacer bush is in interference fit with the rotating shaft.

The utility model also provides a clutch installation component, including pivot and drive gear, drive gear rotates with the pivot to be connected and axial fixity and pivot, still includes foretell clutch that is used for the hybrid transmission case, drive gear be equipped with the first outer lane spline of the first inner circle spline fit of the aforesaid, be equipped with in the pivot with first transmission complex second transmission portion and a plurality of can with the second oilhole of first oilhole intercommunication. Oil can be provided for the spare part of installing in the pivot through the second oilhole.

The rotating shaft is connected with the output end of the engine, the clutch is installed on the rotating shaft and is connected with the output end of the engine through the rotating shaft, the transmission gear is connected with the input end of the motor, the rotating shaft transmits torque output by the engine to a piston of the clutch through the matching of the first transmission part and the second transmission part, when a first inner ring spline on the piston is meshed with a first outer ring spline on the transmission gear, the torque of the piston is transmitted to the transmission gear, and the transmission gear transmits the torque to the motor, so that the power coupling of the engine and the motor is realized; when the first inner ring spline on the piston is separated from the first outer ring spline on the transmission gear, the power transmission of the engine is interrupted, the transmission gear only rotates along with the motor, only the motor provides power for the automobile at the moment, and the automobile runs under pure electric drive.

The transmission gear and the rotating shaft can be rotationally connected and axially fixed through key groove connection or bearing connection such as a ball bearing and a needle bearing, when the transmission gear is rotationally connected through the key groove connection, the transmission gear transmits large torque, the transmission gear has low rotational stability and can reduce power transmission efficiency, the ball bearing can bear smaller radial load than the needle bearing and has lower service life in high-speed and high-load working occasions, and therefore, the clutch mounting assembly preferably further comprises the needle bearing, and the transmission gear and the rotating shaft are rotationally connected through the needle bearing.

Preferably, the clutch mounting assembly further comprises a shaft sleeve, the shaft sleeve is circumferentially fixed with the rotating shaft, and an inner ring of the needle bearing is in interference fit with an outer wall of the shaft sleeve. The friction and abrasion between the needle bearing and the rotating shaft can be reduced by using the shaft sleeve, the radial load is borne, and the rotating shaft and the needle bearing are protected.

Preferably, the connection mode between the shaft sleeve and the rotating shaft is key groove connection or shaft hole interference fit.

Preferably, the sleeve is provided with a third oil hole communicated with the second oil hole. The hydraulic oil in the oil path can enter the needle roller bearing through the third oil hole, and lubricating oil is added to the needle roller bearing to reduce the friction and the wear of the needle roller bearing and prolong the fatigue life of the needle roller bearing.

In order to facilitate the installation and positioning of the clutch, preferably, the rotating shaft is provided with a first limiting part, a second limiting part and a third limiting part, the piston seat is in interference fit with the rotating shaft and is abutted against the first limiting part, the piston is abutted against the second limiting part, and the spacer bush is in interference fit with the rotating shaft and is abutted against the third limiting part. The first limiting part can also prevent the piston seat from moving towards the piston resetting direction, the second limiting part can play a certain limiting role on the piston, and the third limiting part can facilitate the positioning of the spacer bush.

The utility model has the advantages that: the mode of spline torque transmission replaces the mode of traditional clutch friction plate torque transmission, and the use of the friction plate is eliminated, so that the manufacturing cost of the clutch is reduced, and the structure of the clutch is simplified.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of a clutch for a hybrid transmission;

FIG. 2 is a schematic structural diagram of embodiment 2 of a clutch for a hybrid transmission;

FIG. 3 is a schematic structural diagram of embodiment 3 of a clutch for a hybrid transmission;

fig. 4 is a schematic diagram of the clutch mounting assembly in accordance with embodiment 3.

In the drawings:

1-a piston seat; 101-a first via; 102-a high pressure oil chamber; 103-a first oil hole; 2-a piston; 201-a second via; 202-a first inner race spline; 203-a first transmission; 3-a spring; 4-spacer bush; 5-a transmission block; 401 — a first inner race spline; 6-a piston block; 7-a first sealing ring; 8-a second sealing ring; 9-a rotating shaft; 901-a second transmission; 902-a second oil hole; 903-a first limiting part; 904-second limit part; 905-a third limiting part; 10-a transmission gear; 1001-third via; 1002-a first outer race spline; 11-a bearing; 12-a shaft sleeve; 1201-third oil hole.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to 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 therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example 1

As shown in fig. 1, the clutch for a hybrid transmission includes a piston seat 1, a piston 2 and a spring 3, wherein the piston seat 1 is provided with a first through hole 101 matched with a rotating shaft and is installed on the rotating shaft through the first through hole 101, the piston 2 is provided with a second through hole 201 matched with the rotating shaft and is installed on the rotating shaft through the second through hole 201, the inner wall of the second through hole 201 is provided with a first transmission portion 203 used for circumferentially fixing and axially moving the piston 2 on the rotating shaft, the piston seat 1 is provided with a piston groove, the piston 2 is installed in the piston groove and forms a high-pressure oil cavity 102 with the piston groove, the piston seat 1 is slidably connected with the piston 2, one end of the spring 3 abuts against the piston 2, the other end of the spring 3 is connected with a transmission gear, and the piston 2 is provided with a first inner ring spline 202 matched with the transmission gear.

Further, the first transmission portion 203 is a second inner spline for meshing with the rotating shaft. The piston 2 is circumferentially fixed with the rotating shaft through a second inner ring spline and transmits torque.

Furthermore, the piston groove is a circular groove, and the outer cylindrical surface of the piston 2 is in interference fit with the inner wall of the circular groove.

Further, the piston 2 is provided with a cavity, the axial size of the cavity is larger than that of the spring 3, the first inner ring spline 202 is located in the cavity, the spring 3 is axially installed on the rotating shaft and located in the cavity, and the spring 3 is installed in the cavity to play a certain sealing role on the spring 3.

In order to avoid the abrasion of the spring 3 to the rotating shaft caused by radial run-out or axial movement on the rotating shaft in the telescopic process, the piston 2 is further provided with a convex ring structure, the spring 3 is sleeved on the convex ring structure, the arrangement of the convex ring structure enables the spring 3 to be radially fixed on the piston 2, and the spring 3 can be prevented from being in direct contact with the rotating shaft.

The working principle or working flow of the embodiment is as follows:

the clutch is installed on the rotating shaft, when the pressure of the high-pressure oil cavity 102 rises, the piston 2 is gradually axially moved by the liquid pressure, one end of the spring 3 is gradually compressed by the pressure, the clutch is connected with the output end of the engine, the transmission gear is connected with the input end of the motor, when the first inner ring spline 202 on the piston 2 is meshed with the transmission gear on the rotating shaft, the engine is coupled with the power of the motor, and the automobile runs by oil-electric hybrid driving; when the hydraulic pressure is removed, the piston 2 and the spring 3 are not stressed, the elastic potential energy of the spring 3 is gradually released to recover the deformation, the piston 2 is restored to the initial position by the elastic force of the spring 3 and is separated from the transmission gear, the power transmission of the engine is interrupted, and the pure electric power is used for driving the automobile to run.

The beneficial effects of this embodiment: the coupling and decoupling of the engine power and the motor power are realized by the engagement and the disengagement of the spline teeth, the power transmission mode of a friction plate of the traditional clutch is replaced, the friction plate is omitted, the manufacturing cost of the clutch is saved, and the structure of the clutch is simplified.

Example 2

As shown in fig. 2, the present embodiment 2 of the clutch for the hybrid transmission is different from embodiment 1 in that the piston groove is an annular groove, and the piston 2 reciprocates in the annular groove, so that the area of direct contact between the piston 2 and the rotating shaft is reduced, and the wear on the rotating shaft is reduced.

Further, the piston seat 1 is provided with four first oil holes 103 for communicating with the hydraulic oil path, the first oil holes 103 are located on the inner wall of the first through hole 101 and communicate with the high-pressure oil chamber 102, and hydraulic oil directly enters the high-pressure oil chamber 102 from the on-shaft hydraulic oil path through the first oil holes 103.

Further, piston 2 includes transmission piece 5 and the piston block 6 that radial dimension is less than transmission piece 5, and piston block 6 and transmission piece 5 welding are as an organic whole, and transmission piece 5's the other end is connected with spring 3, and piston block 6 is installed in the piston groove, and first inner circle spline 202, second inner circle spline and cavity are all established on transmission piece 5, and spring 3 and transmission piece 5 butt. When the piston block 6 is subjected to hydraulic pressure, the transmission block 5 is pushed to move together, and when the hydraulic pressure is removed, the spring 3 pushes the transmission block 5 and the piston block 6 to move together. The division of the piston 2 into a piston block 6 and a transmission block 5 reduces the radial dimension of the piston seat 1, and thus the volume of the clutch.

The clutch also comprises a spacer 4 arranged on the rotating shaft, and one end of the spacer 4 is abutted with the spring 3. The spring 3 and the transmission gear are separated by the spacer 4, so that the abrasion of the end face of the transmission gear caused by the direct contact of the spring 3 and the end face of the transmission gear in the use process of the clutch is avoided.

The working principle or working flow of the embodiment is as follows: oil liquid of the hydraulic system is conveyed to the high-pressure oil chamber 102 through the first oil hole 103, the piston block 6 pushes the transmission block 5 to axially move together under the action of oil liquid pressure, one end of the spring 3 is abutted to the spacer 4, and the other end of the spring is gradually compressed under the action of pressure from the transmission block 5 until the first inner ring spline 202 is meshed with the transmission gear, so that the automobile runs in an oil-electric hybrid driving mode; when the oil pressure is removed, the spring 3 gradually recovers deformation, the transmission block 5 is gradually separated from the transmission gear at the input end of the motor under the action of the force of the spring 3, the engine is decoupled from the power of the motor at the moment, and the automobile runs in a pure electric driving mode.

The beneficial effects of this example compared to example 1: the piston groove of the piston seat is designed into the annular groove, so that the contact area between the piston and the rotating shaft is reduced, and the friction and the abrasion of the piston on the rotating shaft are reduced; the piston block with the radial size smaller than the maximum radial size of the piston is matched with the piston seat, so that the matching width between the piston and the piston seat is reduced, and the radial width of the piston seat is reduced, so that the size of the clutch is reduced; the spacer bush is additionally arranged to further seal the spring, the spring is separated from the transmission gear through the spacer bush, and abrasion of the end face of the transmission gear, which is caused by direct contact of the end face of the spring and the end face of the transmission gear, is avoided.

Other features, operation principles and advantageous effects of the present embodiment are consistent with embodiment 1.

Example 3

As shown in fig. 3, an embodiment 3 of a clutch for a hybrid transmission is different from the embodiment 2 in that a first seal groove and a second seal groove are respectively formed in an outer wall of a piston block 6 and an inner wall of a piston seat 1, and a first seal ring 7 and a second seal ring 8 are respectively installed in the first seal groove and the second seal groove. The first sealing ring 7 and the second sealing ring 8 can be used for isolating oil in a high-pressure oil cavity and preventing the oil in the high-pressure oil cavity from overflowing or leaking, the first sealing ring 7 and the second sealing ring 8 can be conveniently mounted on the first sealing ring and the second sealing ring respectively, and the first sealing ring 7 and the second sealing ring 8 can be prevented from being separated from the piston seat 1 in the reciprocating motion process of the piston block 6.

Specifically, the first seal ring 7 and the second seal ring 8 are both O-shaped seal rings.

The beneficial effects of this example compared to example 2: the sealing ring is added in the high-pressure oil cavity, so that oil in the high-pressure oil cavity is isolated, the oil leakage risk is reduced, and the matching requirement between the piston and the piston seat is also reduced.

Other features, operating principles and advantageous effects of this implementation are consistent with embodiment 2.

Example 4

As shown in fig. 4, an embodiment of a clutch mounting assembly is shown, the clutch mounting assembly includes a rotating shaft 9, a transmission gear 10, a bearing 11 and a clutch as described in embodiment 3, specifically, the bearing 11 is a needle bearing, the needle bearing is mounted on the rotating shaft 9, with reference to fig. 3 and 4, the transmission gear 10 is provided with a third through hole 1001 and is in interference fit with an outer ring of the needle bearing through the third through hole 1001, the transmission gear 10 is provided with a first outer ring spline 1002 engaged with the first inner ring spline 202, the rotating shaft 9 is provided with a second transmission portion 901 engaged with the first transmission portion 203 and is provided with a second oil hole 902 capable of communicating with the first oil hole 103, and oil can be provided for parts mounted on the rotating shaft through the second oil hole 902.

Further, the second transmission part is a second outer ring spline.

Further, the clutch mounting assembly further comprises a shaft sleeve 12, and the shaft sleeve 12 is in interference fit with the rotating shaft 9.

Further, the maximum diameter of the spacer 4 is larger than the diameter of the outer ring of the needle bearing, and the transmission gear 10 and the shaft sleeve 12 are simultaneously abutted against the spacer 4, so that a certain sealing effect is achieved on the needle bearing.

Further, a third oil hole 1201 communicating with the second oil hole 902 is provided in the sleeve 12. Hydraulic oil in the oil path may enter the needle roller bearing through the third oil hole 1201, and frictional wear of the needle roller bearing may be reduced and fatigue life of the needle roller bearing may be extended by adding lubricating oil to the needle roller bearing.

Further, the axial length of the second outer spline on the rotating shaft 9 is longer than that of the first inner spline 202, so that the second inner spline and the second outer spline are kept in a meshed state at any time in the reciprocating motion process of the transmission block 5.

Further, be equipped with first spacing portion 903 on the pivot 9, spacing portion 904 of second and the spacing portion 905 of third, the second outer lane spline is located between spacing portion 904 of second and the spacing portion 905 of third, piston seat 1 and pivot 9 interference fit and with first spacing portion 903 butt, piston block 6 and the spacing portion 904 butt of second, spacer 4 and pivot 9 interference fit and with the spacing portion 905 butt of third, concretely, the distance between first spacing portion 903 and the spacing portion 904 of second equals the axial length of piston seat 1, piston seat 1 is located between first spacing portion 903 and the spacing portion 904 of second.

The working principle or working process of the embodiment is as follows: one end of the piston seat 1 abuts against a first limiting portion 903 on the rotating shaft 9, a first oil hole 103 on the piston seat 1 is communicated with and concentric with a second oil hole 902 on the rotating shaft 9, a second inner ring spline on the transmission block 5 is meshed with a second outer ring spline on the rotating shaft 9, one end of the transmission block 5 abuts against a second limiting portion 904, the spring 3 is installed on a convex ring structure of the transmission block 5 and abuts against the transmission block 5, the spacer sleeve 4 is in interference fit with the rotating shaft 9, one end of the spacer sleeve 4 is simultaneously abutted against the spring 3 and a third limiting portion 905, the shaft sleeve 12 is in interference fit with the rotating shaft 9, an inner ring of the needle bearing is in interference fit with an outer wall of the shaft sleeve 12, a third through hole 1001 of the transmission gear 10 is in interference fit with an outer ring of the needle bearing, and the spacer sleeve 4 is simultaneously abutted against the transmission gear 10 and the shaft sleeve 12.

When an automobile hydraulic system is opened, hydraulic oil enters the needle bearing through the second oil hole 902 and the third oil hole 1201 to lubricate parts of the needle bearing, meanwhile, the hydraulic oil also enters the first oil hole 103 in the piston seat 1 from the second oil hole 902 on the rotating shaft 9 and finally enters the high-pressure oil cavity 102 to increase the pressure of the high-pressure oil cavity 102, the piston seat 1 is fixed, the rotating piston block 6 and the rotating transmission block 5 are pressed to move in the direction of the transmission gear 10 until the first inner ring spline 202 on the transmission block 5 is meshed with the first outer ring spline 1002, the torque is transmitted to the transmission gear 10 from the transmission block 5, the transmission gear 10 is connected with the input end of the motor and transmits the torque to the input end of the motor, and at the moment, the engine is coupled with the power of the motor, and the automobile runs in an oil-electric hybrid driving mode; when the hydraulic pressure is removed, the transmission block 5 and the piston block 6 are reset by the elastic force of the spring 3, the transmission block 5 is separated from the transmission gear 10, the engine and the motor are decoupled, and the automobile runs in a pure electric drive mode.

The beneficial effects of this embodiment: the coupling and decoupling of the engine power and the motor power are realized by the engagement and the disengagement of the spline teeth, the traditional clutch is replaced by a mode that friction plates transmit power, the use of the friction plates is eliminated, the manufacturing cost of the clutch is saved, the structure of the clutch is simplified, and the high matching of the clutch mounting assembly and the clutch for the hybrid power gearbox improves the power transmission efficiency.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a clutch for hybrid transmission, is including being used for installing piston seat (1), piston (2) and spring (3) in the pivot, piston seat (1) be equipped with be used for with first through-hole (101) of pivot complex, piston (2) be equipped with be used for with pivot complex second through-hole (201), the inner wall of second through-hole (201) is equipped with be used for making the piston fixed and axially movable's of circumference in the pivot first transmission portion (203), piston seat (1) is equipped with the piston groove, piston (2) install in the piston groove and with form high-pressure oil pocket (102) between the piston groove, piston (2) with piston seat (1) sliding connection, the one end of spring (3) with piston (2) butt, the other end of spring (3) is used for connecting drive gear, its characterized in that, piston (2) are equipped with can be used for with drive gear engaged with first inner circle spline (202).

2. A clutch for a hybrid gearbox according to claim 1, characterised in that the first transmission part (203) is a second inner ring spline for engagement with a rotating shaft.

3. A clutch for a hybrid transmission according to claim 1, characterised in that the piston groove is an annular groove and the piston holder (1) is provided with a number of first oil holes (103) for communication with the high-pressure oil chamber (102).

4. A clutch for a hybrid transmission according to claim 3, wherein said first oil hole (103) is located in an inner wall of said first through hole (101) and communicates with said high-pressure oil chamber (102).

5. A clutch for a hybrid gearbox according to claim 1, characterised in that the piston (2) is provided with a cavity having an axial dimension which is greater than the axial dimension of the spring (3), the first inner ring spline (202) being located in the cavity and the spring (3) being located in the cavity.

6. A clutch for a hybrid gearbox according to claim 5, characterised in that the piston (2) comprises a driver block (5) and a piston block (6) having a smaller radial dimension than the driver block (5), the piston block (6) being mounted in the piston channel and being connected to one end of the driver block (5), the other end of the driver block (5) being connected to the spring (3), the first inner spline (202), the first transmission part (203) and the cavity being provided on the driver block (5).

7. The clutch for the hybrid transmission according to claim 6, wherein the outer wall of the piston block (6) and the inner wall of the piston seat (1) are respectively provided with a first sealing groove and a second sealing groove, and the first sealing groove and the second sealing groove are respectively provided with a first sealing ring (7) and a second sealing ring (8).

8. A clutch for a hybrid gearbox according to any one of claims 1 to 7, characterised in that it further comprises a spacer (4) for mounting on a rotating shaft, one end of the spacer (4) abutting the spring (3).

9. A clutch mounting assembly comprises a rotating shaft (9) and a transmission gear (10), wherein the transmission gear (10) is rotationally connected with the rotating shaft (9) and axially fixed on the rotating shaft (9), the clutch mounting assembly is characterized by further comprising the clutch for the hybrid transmission case as claimed in claim 3 or 4, the transmission gear (10) is provided with a first outer ring spline (1002) matched with the first inner ring spline (202), and the rotating shaft (9) is provided with a second transmission part (901) matched with the first transmission part (203) and a plurality of second oil holes (902) communicated with the first oil holes (103).

10. A clutch mounting assembly according to claim 9, further comprising a bearing (11), an inner race of the bearing (11) engaging the shaft (9) and an outer race of the bearing (11) engaging the drive gear (10).

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