Wet clutch damping device

Abstract

The present invention discloses a wet clutch vibration reduction device, comprising a housing sub-assembly and a vibration damper sub-assembly; the vibration damper sub-assembly is arranged inside the housing sub-assembly, the housing sub-assembly is filled with transmission oil, the vibration damper sub-assembly works in the transmission oil, the housing sub-assembly is connected to the components on the engine side to transmit the power of the engine, and the vibration damper sub-assembly outputs the engine power to the transmission through the spline on the spline sleeve. The advantages of the present invention are a single-plate wet clutch with a compact structure, and in the application of hybrid vehicle models, the impact torque is better limited to prevent the vibration damper parts from breaking due to excessive impact torque.

Description

Technical Field

[0001] The invention relates to a wet clutch vibration reduction device, which is applied to an automobile power assembly system. Background Art

[0002] The wet clutch vibration damping device is mainly used in the automobile powertrain system. It is a component installed between the engine and the gearbox, providing the automobile with the functions of transmitting torque, reducing vibration and noise, and overload protection.

[0003] At present, in CVT and AT models, hydraulic torque converters are generally used to transfer engine power to the gearbox. With the continuous improvement of vehicle control technology, the role of hydraulic torque converters in the vehicle is gradually reduced, and there is a trend of using wet clutch damping devices to replace hydraulic torque converters. In hybrid models, components with both clutch and damping functions are usually used, and wet clutch damping devices can well meet the vehicle's needs for clutch and damping functions.

[0004] CN102282382B discloses a clutch unit, which is a wet dual clutch with an integrated shock absorber. The clutch unit is mainly used in a dual clutch transmission. This clutch unit has more slipping conditions and generates a lot of heat, so a multi-plate clutch structure is used. In some applications that have fewer requirements for slipping conditions and do not require a dual clutch, the structure is too complicated and occupies a large space. This is an area that needs to be improved in this application. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a wet clutch vibration damping device with a compact structure. While satisfying the clutch and vibration damping functions, the wet clutch vibration damping device has a low requirement for space size.

[0006] In order to solve the above technical problems, the present invention provides a wet clutch vibration damping device, including a housing sub-assembly and a shock absorber sub-assembly; the shock absorber sub-assembly is arranged inside the housing sub-assembly, the housing sub-assembly is filled with transmission oil, the shock absorber sub-assembly works in the transmission oil, the housing sub-assembly is connected to the components on the engine side to transmit the power of the engine, and the shock absorber sub-assembly outputs the engine power to the transmission through the splines on the spline sleeve.

[0007] The housing sub-assembly includes a connecting block, a cover, a cover handle flange, a sealing ring, an oil pump shaft sleeve, a sliding gasket and a sealing cover plate; the connecting block is arranged with threaded holes, and a plurality of circumferentially arranged connecting blocks are connected to the cover, forming a group of circumferentially arranged threaded holes on the cover, the cover is sealingly connected to the cover handle flange, and the sealing ring is arranged in the sealing groove of the cover handle flange; the oil pump shaft sleeve is positioned and matched with the sealing cover plate, and the sealing cover plate is positioned and matched with the cover to form a housing sub-assembly.

[0008] The oil pump shaft sleeve is provided with a connection surface and a positioning step, and a sliding gasket is provided at the positioning step; the sealing cover plate is provided with a cover plate positioning surface and a connection positioning hole, and the oil pump shaft sleeve is matched with the connection positioning hole through the connection surface to connect the oil pump shaft sleeve and the sealing cover plate in a positioning and matching manner. The sealing cover plate is connected in a positioning and matching manner with the cover positioning surface on the cover through the cover plate positioning surface.

[0009] The shock absorber sub-assembly includes a friction plate, a piston, a spline sleeve, a sleeve plate, a spring assembly, a return disc spring and a shock-absorbing cover plate; the friction plate is adhesively connected to the piston; a plurality of spring windows of the same number are circumferentially arranged on the piston, the sleeve plate and the shock-absorbing cover plate, and the positions of the spring windows correspond one to one, the sleeve plate is arranged between the piston and the shock-absorbing cover plate to form a plurality of groups of spring window compartments arranged circumferentially, the piston and the shock-absorbing cover plate are connected, and the spring assembly is arranged in the spring window compartment; the spline sleeve is arranged at the inner diameter position of the sleeve plate, and the driving angle arranged on the spline sleeve cooperates with the driving hole on the sleeve plate to transfer torque.

[0010] The return disc spring is arranged between the spline shaft sleeve and the vibration-damping cover plate.

[0011] The sealing hole on the piston cooperates with the sealing ring of the housing subassembly, and the thrust surface on the spline sleeve contacts with the thrust surface on the cover handle flange to limit the axial position of the spline sleeve.

[0012] The sliding surface on the spline shaft sleeve cooperates with the sliding surface on the cover handle flange to achieve radial positioning of the spline shaft sleeve.

[0013] The spring assembly comprises an outer spring and an inner spring, wherein the inner spring is arranged at the center of the outer spring to form the spring assembly.

[0014] During the operation of the wet clutch damping device of the present invention, the housing subassembly is filled with transmission oil, the damper subassembly works in the transmission oil, is connected to the components on the engine side through a group of circumferentially arranged threaded holes, transmits the power of the engine, and is radially positioned with the engine crankshaft through the cover handle on the cover handle flange. The wet clutch damping device outputs the engine power to the transmission through the splines on the spline sleeve, and the oil pump driving surface on the oil pump sleeve drives the oil pump to provide oil pressure for the wet clutch damping device.

[0015] When the wet clutch vibration reduction device of the present invention is in the engaged state, the engine power is transmitted to the gearbox, the oil pump provides locking oil pressure, and the gearbox oil passes through the oil channel on the vibration reduction cover plate and the gap between the parts, pushing the piston to press the friction plate and the friction surface on the cover to transmit power.

[0016] When the wet clutch vibration damping device of the present invention is in a disengaged state, the engine power cannot be transmitted to the gearbox, and the return disc spring provides an initial return force. The return disc spring pushes the vibration damping cover plate to make the vibration damper sub-assembly move axially, and the vibration damper sub-assembly is tightly attached to the sliding gasket, and a gap is generated between the friction plate and the friction surface of the cover; further, the oil pump provides unlocking oil pressure, and the gearbox oil passes through the oil hole on the cover handle flange to push the piston to make the vibration damper sub-assembly tightly attached to the sliding gasket.

[0017] The superior effects of the structure of the present invention are:

[0018] 1) The present invention combines a wet clutch with a shock absorber, which saves component space to the greatest extent while achieving the same clutch and shock absorption functions compared to a dry clutch;

[0019] 2) The single-plate wet clutch used in the present invention can better limit the impact torque in applications where hybrid vehicles have large starting impact conditions, play a good torque limiting protection role, and prevent the shock absorber parts from breaking due to excessive impact torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 It is a schematic diagram of the assembly of the present invention;

[0022] Figure 2 It is a schematic diagram of the AA section of the assembly of the present invention;

[0023] Figure 3 It is an exploded schematic diagram of the assembly of the present invention;

[0024] Description of the symbols in the figure

[0025] 1-connecting block; 101-threaded hole;

[0026] 2-Friction plate;

[0027] 3-cover;

[0028] 301-cover positioning surface A; 302-friction surface;

[0029] 303-cover positioning surface B; 304-welding surface C;

[0030] 4-Piston;

[0031] 401-adhesive surface; 402-spring window F;

[0032] 403-sealing hole; 404-flat pin hole I;

[0033] 5-cover handle flange;

[0034] 501-cover handle; 502-oil hole;

[0035] 503-welding surface D; 504-sealing groove;

[0036] 505-sliding surface K; 506-thrust surface M;

[0037] 6-Spline bushing;

[0038] 601-spline; 602-sliding surface L;

[0039] 603-thrust surface N; 604-driving angle;

[0040] 7-seal ring; 8-flat pin;

[0041] 9-shaft sleeve plate;

[0042] 901- spring window G; 902- driving hole;

[0043] 10-outer spring; 11-inner spring;

[0044] 12-return disc spring;

[0045] 13-Oil pump shaft sleeve;

[0046] 1301-welding surface E; 1302-oil pump driving surface;

[0047] 1303-positioning steps;

[0048] 14- Sliding gasket;

[0049] 15-vibration damping cover;

[0050] 1501-spring window H; 1502-flat pin hole J;

[0051] 1503-Oil channel;

[0052] 16-sealing cover plate;

[0053] 1601-cover plate positioning surface; 1602-welding positioning hole. DETAILED DESCRIPTION

[0054] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0055] Figure 1 The schematic diagram of the assembly of the present invention is shown. Figure 2 The schematic diagram of the AA section of the assembly of the present invention is shown. Figure 3 The exploded schematic diagram of the assembly of the present invention is shown. Figure 1-Figure 3 As shown, the present invention provides a wet clutch vibration reduction device, including a housing sub-assembly and a vibration damper sub-assembly, wherein:

[0056] The housing subassembly includes a connecting block 1 , a cover 3 , a cover handle flange 5 , a sealing ring 7 , an oil pump shaft sleeve 13 , a sliding gasket 14 and a sealing cover plate 16 .

[0057] like Figure 2 and Figure 3 As shown, the connection block 1 is provided with a threaded hole 101, the cover 3 is provided with a cover positioning surface A301, a friction surface 302, a cover positioning surface B303 and a welding surface C304, and a plurality of circumferentially arranged connection blocks 1 are welded to the cover 3 via the welding surface C304, thereby forming a group of circumferentially arranged threaded holes 101.

[0058] like Figure 2 and Figure 3 As shown, a welding surface D503 and a sealing groove 504 are arranged on the cover handle flange 5. The cover handle flange 5 cooperates with the cover positioning surface B302 through the welding surface D503. The cover handle flange 5 is welded to the cover 3 by welding, and the sealing ring 7 is arranged in the sealing groove 504.

[0059] like Figure 2 and Figure 3 As shown, the oil pump sleeve 13 is provided with a welding surface E1301 and a positioning step 1303; the sealing cover plate 16 is provided with a cover plate positioning surface 1601 and a welding positioning hole 1602; the oil pump sleeve 13 cooperates with the welding positioning hole 1602 through the welding surface E1301, and the oil pump sleeve 13 and the sealing cover plate 16 are welded and connected by welding, and the sliding gasket 14 is arranged at the positioning step 1303.

[0060] Furthermore, the sealing cover plate 16 cooperates with the cover positioning surface A301 on the cover 3 through the cover plate positioning surface 1601, and the sealing cover plate 16 and the cover 3 are welded together by welding to form a housing sub-assembly.

[0061] The shock absorber sub-assembly includes a friction plate 2, a piston 4, a spline sleeve 6, a flat pin 8, a sleeve plate 9, an outer spring 10, an inner spring 11, a return disc spring 12 and a shock absorbing cover plate 15.

[0062] like Figure 2 and Figure 3 As shown, the piston 4 is provided with an adhesive surface 401 , a spring window F402 , and a flat pin hole I404 , and the friction plate 2 is adhesively connected to the piston 4 via the adhesive surface 401 .

[0063] like Figure 2 and Figure 3As shown, the shaft sleeve plate 9 is provided with a spring window G901 and a drive hole 902; the vibration damping cover plate 15 is provided with a spring window H1501 and a flat pin hole J1502, and the positions of the multiple spring windows F402, spring windows G901, and spring windows H1501 arranged circumferentially in the same number correspond to each other. The shaft sleeve plate 9 is arranged between the piston 4 and the vibration damping cover plate 15 to form multiple groups of spring window bins arranged circumferentially; the inner spring 11 is arranged at the center of the outer spring 12 to form a spring assembly, and the spring assembly is arranged in the spring window bin. The flat pin 8 rivets the piston 4 and the vibration damping cover plate 15 through the multiple flat pin holes I404 and the flat pin holes J1502 arranged circumferentially.

[0064] like Figure 2 and Figure 3 As shown, a driving angle 604 is arranged on the spline sleeve 6, and the spline sleeve 6 is arranged at the inner diameter position of the sleeve plate 9. The driving angle 604 cooperates with the driving hole 902 on the sleeve plate 9 to transfer torque; the return disc spring 12 is arranged between the spline sleeve 6 and the vibration damping cover plate 15, thereby forming a vibration damper sub-assembly.

[0065] like Figure 2 and Figure 3 As shown, the shock absorber subassembly is arranged inside the housing subassembly, the sealing hole 403 on the piston 4 cooperates with the sealing ring 7, the thrust surface N603 on the spline sleeve 6 contacts the thrust surface M506 on the cover handle flange 5 to limit the axial position of the spline sleeve 6; the sliding surface L602 on the spline sleeve 6 cooperates with the sliding surface K505 on the cover handle flange 5 at the same time to radially position the spline sleeve 6, thereby forming a wet clutch shock absorber device of the present invention.

[0066] During operation of the wet clutch vibration damping device of the present invention, the housing subassembly is filled with transmission oil, the damper subassembly works in the transmission oil, and the wet clutch vibration damping device is connected to the components on the engine side through the circumferentially arranged threaded holes 101 to transmit the power of the engine; the cover handle 501 on the cover handle flange 5 is radially positioned with the engine crankshaft, and the wet clutch vibration damping device outputs the engine power to the transmission through the spline 601 on the spline sleeve 6, and the oil pump drive surface 1302 on the oil pump sleeve 13 drives the oil pump to provide oil pressure for the wet clutch vibration damping device.

[0067] When the wet clutch damping device is in the engaged state, the engine power is transmitted to the gearbox, the oil pump provides locking oil pressure, and the gearbox oil passes through the oil channel 1503 on the damping cover plate 15 and the gap between the parts, pushing the piston 4 to press the friction plate 2 and the friction surface 302 on the cover 3 to transmit power.

[0068] When the wet clutch vibration damping device is in a disengaged state, the engine power cannot be transmitted to the gearbox, and the return disc spring 12 provides an initial return force. The return disc spring 12 pushes the vibration damping cover plate 15 to make the vibration damper sub-assembly move axially, and the vibration damper sub-assembly is tightly attached to the sliding gasket 14, and a gap is generated between the friction plate 2 and the friction surface 302; further, the oil pump provides unlocking oil pressure, and the gearbox oil passes through the oil hole 502 on the cover handle flange 5, pushing the piston 4 to make the vibration damper sub-assembly tightly attached to the sliding gasket 14.

[0069] The wet clutch vibration reduction device of the present invention is a single-plate wet clutch. In applications where hybrid vehicles have large starting impact conditions, it can better limit the impact torque, play a good torque limiting protection role, and prevent the shock absorber parts from breaking due to excessive impact torque.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wet clutch vibration reduction device, comprising a housing sub-assembly and a vibration damper sub-assembly, characterized in that: The shock absorber subassembly is arranged inside the housing subassembly, the housing subassembly is filled with transmission oil, the shock absorber subassembly works in the transmission oil, the housing subassembly is connected to the components on the engine side to transmit the power of the engine, and the shock absorber subassembly outputs the engine power to the transmission through the splines on the spline sleeve; The housing sub-assembly includes a connecting block, a cover, a cover handle flange, a sealing ring, an oil pump shaft sleeve, a sliding gasket and a sealing cover plate; the connecting block is provided with threaded holes, a plurality of circumferentially arranged connecting blocks are connected to the cover, a group of circumferentially arranged threaded holes are formed on the cover, and the cover is sealed and connected to the cover handle flange; the oil pump shaft sleeve is connected to the sealing cover plate in a positioning and matching manner, and the sealing cover plate is connected to the cover in a positioning and matching manner to form a housing sub-assembly; The shock absorber sub-assembly includes a friction plate, a piston, a spline shaft sleeve, a shaft sleeve plate, a spring assembly, a return disc spring and a shock-absorbing cover plate; the friction plate is connected to the piston, and a plurality of spring windows of the same number are arranged circumferentially on the piston, the shaft sleeve plate and the shock-absorbing cover plate, and the positions of the spring windows correspond to each other one by one, the shaft sleeve plate is arranged between the piston and the shock-absorbing cover plate to form a plurality of groups of spring window bins arranged circumferentially, the piston is connected to the shock-absorbing cover plate, and the spring assembly is arranged in the spring window bin; the spline shaft sleeve is arranged at the inner diameter position of the shaft sleeve plate, and the driving angle arranged on the spline shaft sleeve cooperates with the driving hole on the shaft sleeve plate to transfer torque; The return disc spring is arranged between the spline shaft sleeve and the vibration damping cover plate; The sealing hole on the piston cooperates with the sealing ring of the housing sub-assembly, and the thrust surface on the spline sleeve contacts with the thrust surface on the cover handle flange to limit the axial position of the spline sleeve.

2. The wet clutch vibration damping device according to claim 1, characterized in that: The sealing ring is arranged in the sealing groove of the cover handle flange.

3. The wet clutch vibration damping device according to claim 1, characterized in that: The oil pump shaft sleeve is provided with a connection surface and a positioning step, the sealing cover plate is provided with a cover plate positioning surface and a connection positioning hole, and the oil pump shaft sleeve cooperates with the connection positioning hole through the connection surface to connect the oil pump shaft sleeve and the sealing cover plate in a positioning and matching manner.

4. The wet clutch vibration damping device according to claim 3, characterized in that: A sliding gasket is arranged at the positioning step.

5. The wet clutch vibration damping device according to claim 3, characterized in that: The sealing cover plate is connected by positioning and matching with the cover positioning surface on the cover through the cover plate positioning surface.

6. The wet clutch vibration damping device according to claim 1, characterized in that: The sliding surface on the spline shaft sleeve cooperates with the sliding surface on the cover handle flange to achieve radial positioning of the spline shaft sleeve.

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