Torque damper

Abstract

The utility model discloses a torque shock absorber, which comprises an inertia disc, a first limiting part and a second limiting part, the cover plate is arranged in the containing cavity, the cover plate is provided with a first surface and a second surface, and a plurality of first limiting matching parts are arranged in the peripheral direction of the cover plate at intervals; the transmission assembly comprises a first elastic piece, friction pieces and a transmission piece, the first elastic piece is attached to the first surface, the number of the friction pieces is two, and the two opposite sides of the transmission piece are each tightly attached to the corresponding friction piece; and the vibration reduction assembly comprises a plurality of second elastic pieces, and the multiple second elastic pieces are arranged in the circumferential direction of the vibration reduction assembly at intervals. According to the torsion damper, the compactness of the axial structure is improved, the torque of an engine is transmitted to the damping assembly through the inertia disc via the transmission assembly, the damping assembly is made to conduct torsion vibration, and under the buffering effect of the second elastic pieces, rapid attenuation of the torsion vibration is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile hybrid transmission systems, in particular to a torque damper. Background Art

[0002] A hybrid drivetrain torsional vibration damper is a low-stiffness, moderately damped device placed between the engine and drivetrain, effectively controlling engine-induced torsional vibration and noise in the vehicle's drivetrain. Positioned between the engine and hybrid transmission, the torsional vibration damper transfers engine torque to the transmission while simultaneously damping irregular engine vibrations and providing torque limiting and overload protection.

[0003] The primary torsional vibration damping element currently used in hybrid powertrains is a single-mass flywheel + torsional vibration damper configuration. This structure can transmit low- to medium-range torque, achieve moderate torsional stiffness, and accommodate complex damping structures, including torque limiting. However, due to limited space for damper springs and a narrow torsional angle, stiffness cannot be reduced, hindering continuous optimization and improvement of NVH performance. Spatially, it resembles a traditional flywheel + clutch configuration, with a long axial clearance, a large number of sub-components, and relatively high costs. Furthermore, the development of both the flywheel and the torsional vibration damper requires increased design, verification, and management, as well as additional fasteners and assembly processes. Utility Model Content

[0004] The utility model aims to provide a torque damper to solve the problems of small torsion angle and long axial space of the torque damper.

[0005] The utility model provides a torque damper, comprising:

[0006] An inertia disc, the inertia disc having an accommodating cavity, the accommodating cavity having an opening formed on a surface of the inertia disc, the sidewall of the accommodating cavity being provided with a plurality of first limiting portions, the plurality of first limiting portions being spaced apart and arranged on the sidewall of the accommodating cavity;

[0007] a cover plate disposed in the accommodating cavity, the cover plate having a first surface and a second surface disposed opposite to each other, a plurality of first position-limiting fitting portions spaced apart along the outer circumference of the cover plate, the plurality of first position-limiting fitting portions corresponding to the plurality of first position-limiting portions one-to-one, and the first position-limiting portions and the first position-limiting fitting portions forming a position-limiting fit;

[0008] A transmission assembly includes a first elastic member, a friction member, and a transmission member, wherein the first elastic member is in contact with the first surface, the friction members include two, and opposite sides of the transmission member are respectively in contact with one of the friction members, one of the friction members is in contact with the second surface, and the other of the friction members is in contact with the bottom wall of the accommodating cavity, and a first assembly space is formed between the cover plate and the transmission assembly;

[0009] The vibration damping assembly is arranged in the first assembly space. The transmission member is connected to the vibration damping assembly. The vibration damping assembly includes a plurality of second elastic members, which are arranged at intervals along the circumference of the vibration damping assembly.

[0010] A torque damper as described above, wherein preferably, the vibration damping assembly includes a damping plate, a first vibration damping plate and a second vibration damping plate, the damping plate is located between the first vibration damping plate and the second vibration damping plate, the transmission member is connected to the second vibration damping plate, the damping plate is provided with a plurality of first mounting holes in the circumference, the first vibration damping plate is provided with a plurality of second mounting holes in the circumference, the second vibration damping plate is provided with a plurality of third mounting holes in the circumference, the plurality of first mounting holes, the plurality of second mounting holes and the plurality of third mounting holes are arranged in a one-to-one correspondence, the first mounting holes and the corresponding second mounting holes and the third mounting holes form a second assembly space, and each of the second assembly spaces is provided with a second elastic member.

[0011] A torque damper as described above, wherein preferably, the accommodating chamber includes at least a first chamber and a second chamber that are interconnected, the diameter of the first chamber is larger than the diameter of the second chamber, a step surface is formed between the first chamber and the second chamber, one of the friction members abuts against the second surface, and the other friction member abuts against the step surface.

[0012] A torque damper as described above, wherein preferably, a plurality of second limiting portions are provided at intervals on the side walls of the accommodating cavity, the first limiting portion is formed between adjacent second limiting portions, a plurality of second limiting fitting portions are provided at intervals on the outer circumference of the first elastic member, the plurality of second limiting fitting portions are arranged in a one-to-one correspondence with the second limiting portion, and a limiting fit is formed between the second limiting portion and the second limiting fitting portions.

[0013] A torque damper as described above, wherein preferably, the first limiting portion is a first limiting groove provided on the side wall of the accommodating cavity, and the first limiting matching portion is a first protrusion provided on the outer circumference of the cover plate, and the first protrusion can be embedded in the first limiting groove to limit the relative rotation of the cover plate and the inertia disk.

[0014] A torque damper as described above, wherein preferably, the second limiting portion is a limiting protrusion provided on the side wall of the accommodating cavity, and the second limiting matching portion is a second protrusion provided on the outer circumference of the first elastic member, and the second protrusion can abut against the limiting protrusion to form a limiting fit.

[0015] A torque damper as described above, wherein preferably, a first assembly hole is provided on the cover plate, a second assembly hole is provided on the first elastic member, a third assembly hole is provided on the friction member, and a fourth assembly hole is provided on the transmission member, and the first assembly hole, the second assembly hole, the third assembly hole and the fourth assembly hole are coaxially arranged to form the first assembly space.

[0016] A torque damper as described above, wherein preferably, a plurality of first positioning portions are provided on the damping disc, a plurality of first positioning matching portions are provided on the first damping disc, a plurality of first positioning portions correspond one-to-one to a plurality of first positioning matching portions, and the first positioning portions form a positioning match with the corresponding first positioning matching portions to fix the damping disc and the first damping disc.

[0017] A torque damper as described above, wherein preferably, the second vibration damping plate is provided with a plurality of second positioning portions, and the first vibration damping plate is provided with a plurality of second positioning matching portions, and the plurality of second positioning portions correspond one-to-one with the plurality of second positioning matching portions to fix the positions of the first vibration damping plate and the second vibration damping plate.

[0018] In the torque damper as described above, preferably, a third limiting portion is provided on the damping disc, and the third limiting portion is used to limit the circumferential rotation of the first positioning portion.

[0019] Compared with the prior art, the torsional vibration damper of the present invention improves the compactness of the axial structure. The torsional vibration of the engine is transmitted to the vibration damping assembly via the inertia disk via the transmission assembly, so that the torsional vibration of the vibration damping assembly is rapidly attenuated under the buffering action of multiple second elastic members, thereby optimizing the vibration damping performance of the torsional vibration damper and improving space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of a torque damper provided by an embodiment of the present utility model;

[0021] Figure 2 is a top view of a torque damper provided by an embodiment of the present utility model;

[0022] Figure 3 yes Figure 2 sectional view of

[0023] Figure 4 It is a three-dimensional diagram of the inertia disk provided in an embodiment of the present utility model;

[0024] Figure 5 is a top view of the inertia disk provided in an embodiment of the present utility model;

[0025] Figure 6 is a three-dimensional diagram of a cover plate provided in an embodiment of the present utility model;

[0026] Figure 7 This is a front view of the cover provided by an embodiment of the present utility model;

[0027] Figure 8 is a three-dimensional diagram of a first elastic member provided in an embodiment of the present utility model;

[0028] Figure 9 is a three-dimensional diagram of a friction member provided in an embodiment of the present utility model;

[0029] Figure 10 It is a three-dimensional diagram of a transmission member provided in an embodiment of the present utility model;

[0030] Figure 11 is a three-dimensional diagram of a damping disc provided in an embodiment of the present utility model;

[0031] Figure 12 is a three-dimensional diagram of a first vibration damping plate provided in an embodiment of the present utility model;

[0032] Figure 13 This is a three-dimensional diagram of the second vibration damping plate provided in an embodiment of the present utility model;

[0033] Figure 14 is a three-dimensional diagram of a first positioning portion provided in an embodiment of the present utility model;

[0034] Figure 15 It is a three-dimensional diagram of the third limiting portion provided in an embodiment of the present utility model.

[0035] Description of reference numerals:

[0036] 10 - inertia disk, 11 - accommodating chamber, 111 - first chamber, 112 - second chamber, 113 - stepped surface, 12 - opening, 13 - first limiting portion, 131 - first limiting groove, 14 - second limiting portion, 141 - limiting protrusion;

[0037] 20 - cover plate, 21 - first position-limiting fitting portion, 211 - first protrusion, 22 - first surface, 23 - second surface, 24 - first assembly hole;

[0038] 30 - transmission assembly, 31 - first elastic member, 311 - second assembly hole, 312 - second position-limiting fitting portion, 3121 - second protrusion, 32 - friction member, 321 - third assembly hole, 33 - transmission member, 331 - fourth assembly hole;

[0039] 40-vibration damping assembly, 41-second elastic member, 42-damping plate, 421-first mounting hole, 422-first positioning portion, 4221-first positioning column, 4222-buckle, 43-first vibration damping plate, 431-second mounting hole, 432-first positioning matching portion, 4321-first positioning hole, 433-second positioning matching portion, 4331-second positioning hole, 44-second vibration damping plate, 441-third mounting hole, 442-second positioning portion, 4421-second positioning column, 4422-positioning block, 45-second assembly space;

[0040] 50-third limiting portion, 51-limiting ring, 52-second limiting groove. DETAILED DESCRIPTION

[0041] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0042] Reference Figures 1 to 15 As shown, the present invention provides a torque damper, including an inertia disc 10, a cover plate 20, a transmission assembly 30, and a vibration damping assembly 40. The inertia disc 10 has a receiving cavity 11. The receiving cavity 11 has an opening 12 formed on the surface of the inertia disc 10. The cover plate 20, the transmission assembly 30, and the vibration damping assembly 40 are all received in the receiving cavity 11 through the opening 12. Then, the various components are integrated into the inertia disc 10 along the axial direction of the inertia disc 10 to form a torque damper. Compared with the existing structure combining a flywheel and a torsional vibration damper, the axial installation space is reduced, the structure is more compact, and it is conducive to improving space utilization.

[0043] In the embodiments provided in this application, refer to Figures 4 to 6 As shown, the side wall of the accommodating cavity 11 is provided with a plurality of first limiting portions 13, and the plurality of first limiting portions 13 are arranged at intervals on the side wall of the accommodating cavity 11. The outer circumferential direction of the cover plate 20 is provided with a plurality of first limiting fitting portions 21 at intervals. The number of the first limiting portions 13 and the first limiting fitting portions 21 is adapted to each other. Each first limiting portion 13 has a first limiting fitting portion 21 to form a limiting fit therewith. Through the limiting fit between the first limiting portion 13 and the first limiting fitting portion 21, the cover plate 20 can be prevented from rotating circumferentially relative to the inertia disk 10 when the system has excessive speed fluctuations or is subjected to impact and slipping conditions.

[0044] Reference Figure 3 as well as Figure 7As shown, the transmission assembly 30 includes a first elastic member 31, a friction member 32 and a transmission member 33. The friction member 32 includes two, and the transmission member 33 is located between the two friction members 32 and is in close contact with the two friction members 32. The cover plate 20 includes a first surface 22 and a second surface 23 that are oppositely arranged. The first surface 22 is the upper surface of the cover plate 20, and the second surface 23 is the lower surface of the cover plate 20. When the cover plate 20 and the transmission assembly 30 are both assembled in the inertia disk 10, the first elastic member 31 is in contact with the first surface of the cover plate 20. The first elastic member 31, the cover plate 20, the friction member 32 and the transmission member 33 are respectively covered and accommodated in the accommodating cavity 11. Since the first elastic member 31, the cover plate 20, the friction member 32 and the transmission member 33 are all plate-shaped structures, the space occupied in the axial direction of the inertia disk 10 is small, thereby improving the compactness of the axial structure.

[0045] In a feasible embodiment, referring to Figure 3 、 Figure 6 、 Figure 8 、 Figure 9 as well as Figure 10 As shown, the cover plate 20 has a first assembly hole 24, the first elastic member 31 includes a second assembly hole 311, the friction member 32 is provided with a third assembly hole 321, and the transmission member 33 has a fourth assembly hole 331. When the cover plate 20 is assembled with the transmission assembly 30, the first assembly hole 24, the second assembly hole 311, the third assembly hole 321 and the fourth assembly hole 331 are coaxial. The first assembly hole 24, the second assembly hole 311, the third assembly hole 321 and the fourth assembly hole 331 together constitute a first assembly space (not shown). The vibration damping assembly 40 is located in the first assembly space, and the transmission member 33 is connected to the vibration damping assembly 40, thereby enabling the torsional vibration of the engine to be transmitted to the vibration damping assembly 40 through the transmission member 33.

[0046] Reference Figure 1 as well as Figure 2 As shown, the vibration damping assembly 40 is circumferentially spaced with multiple second elastic members 41. These second elastic members 41 dampen speed fluctuations caused by torsional vibrations, transmitting the damped torsional vibrations to the drivetrain. Compared to traditional torsional vibration dampers, the multiple second elastic members 41 have a larger distribution radius, increasing the torsional angle of the second elastic members 41, which helps reduce the fixed frequency of the system and improves NVH performance.

[0047] Reference Figures 1 to 3As shown, in the embodiment provided by the present application, the vibration reduction assembly 40 includes a damping plate 42, a first vibration reduction plate 43 and a second vibration reduction plate 44. The damping plate 42 is arranged between the first vibration reduction plate 43 and the second vibration reduction plate 44. The first vibration reduction plate 43 and the second vibration reduction plate 44 clamp the damping plate 42, and the transmission member 33 is connected to the second vibration reduction plate 44 to transmit torque to the second vibration reduction plate 44.

[0048] The vibration reduction assembly 40 has a plurality of second assembly spaces 45, each of which is used to accommodate a second elastic member 41. Under the joint action of the plurality of second elastic members 41, the torque vibration can be greatly attenuated. Figure 1 、 Figure 2 、 Figures 11 to 13 As shown, the damping disc 42 is provided with a plurality of first mounting holes 421 along its circumference, the first vibration damping disc 43 is provided with a plurality of second mounting holes 431 along its circumference, and the second vibration damping disc 44 is provided with a plurality of third mounting holes 441 along its circumference. The number and position of the first mounting holes 421, the second mounting holes 431, and the third mounting holes 441 are adapted to each other. The first mounting holes 421, the second mounting holes 431, and the third mounting holes 441 at corresponding positions form a second assembly space 45. Preferably, the second elastic member 41 is a spring, with opposite ends of the spring connected to opposite sides of the second assembly space 45, respectively. The plurality of second assembly spaces 45 are spaced apart along the circumference of the vibration damping assembly 40. When torque is transmitted to the vibration damping assembly 40, the plurality of springs are repeatedly compressed within the corresponding second assembly spaces 45, thereby jointly alleviating speed fluctuations and reducing the torque before output.

[0049] The conventional torsional vibration damper comprises two cover plates 20, namely an upper cover plate 20 and a lower cover plate 20, wherein the lower cover plate 20 is in contact with the friction surface. In order to further simplify the structure of the torque vibration damper, referring to Figures 3 to 5 As shown, the accommodating chamber 11 includes at least a first chamber 111 and a second chamber 112 that are interconnected. The second chamber 112 is further away from the opening 12 than the first chamber 111. The diameter of the first chamber 111 is larger than that of the second chamber 112. A stepped surface 113 is formed between the first and second chambers 111, 112. When the transmission assembly 30 is assembled on the inertia disk 10, the friction members 32 on either side of the transmission member 33 respectively abut against the second surface 23 of the cover plate 20 and the stepped surface 113. Compared to traditional torsional vibration dampers, the friction members 32 abutting against the stepped surface 113 replace the portion of the lower cover plate 20 that contacts the friction surface. This reduces the structure of the lower cover plate 20 while achieving the same function, thereby simplifying the structure of the torque damper.

[0050] In order to provide a pressing force to the first elastic member 31 so that the first elastic member 31 can be elastically deformed and transmit the force, refer to Figure 3 as well as Figure 8As shown, a plurality of second limiting portions 14 are provided at intervals on the side walls of the accommodating cavity 11, and a first limiting portion 13 is formed between adjacent second limiting portions 14. A plurality of second limiting fitting portions 312 are provided at intervals in the outer circumferential direction of the first elastic member 31, and the second limiting portions 14 and the second limiting fitting portions 312 are arranged in a one-to-one correspondence. In the embodiment provided in the present application, the first elastic member 31 is a diaphragm spring. Through the limiting cooperation between the second limiting portion 14 and the second limiting fitting portion 312, the diaphragm spring can always be subjected to the pressing force applied by the second limiting portion 14 to undergo elastic deformation and accumulate elastic force, and then transmit the elastic force to the friction member 32 and the transmission member 33, thereby realizing vibration reduction of the torque damper.

[0051] In a feasible embodiment, the first limiting portion 13 is a first limiting groove 131 provided on the side wall of the accommodating cavity 11, and multiple first limiting grooves 131 are provided at intervals on the side wall of the accommodating cavity 11. The second limiting portion 14 is provided on the side wall of the accommodating cavity 11 between two adjacent first limiting grooves 131. The first limiting matching portion 21 is a first protrusion 211 provided on the outer circumference of the cover plate 20. The first protrusion 211 can be embedded in the first limiting groove 131. The opposite side edges of the first protrusion 211 respectively abut against the opposite side walls of the first limiting groove 131, thereby limiting the rotation of the cover plate 20 relative to the circumferential direction of the inertia disk 10. Preferably, two first protrusions 211 are embedded in each first limiting groove 131, and the two first protrusions 211 respectively abut against the two side walls opposite to each other of the first limiting groove 131. Compared with the cooperation between one first protrusion 211 and the first limiting groove 131, two shorter first protrusions 211 are used to abut against the two side walls of the first limiting groove 131 for limiting, which can reduce the area of the first protrusion 211 and is conducive to cost saving.

[0052] Furthermore, the second limiting portion 14 is a limiting protrusion 141 provided on the side wall of the accommodating cavity 11, and the limiting protrusion 141 is a protrusion extending from the side wall of the accommodating cavity 11 toward the inside of the accommodating cavity 11. The second limiting matching portion 312 is a second protrusion 3121 provided on the outer circumference of the first elastic member 31. When the transmission assembly 30 is assembled in the accommodating cavity 11, each second protrusion 3121 is abutted against the corresponding limiting protrusion 141, and the limiting protrusion 141 can apply a force to the second protrusion 3121 so that the first elastic member 31 can always be subjected to the clamping force of the limiting protrusion 141.

[0053] In order to fix the damping plate 42, the first vibration damping plate 43 and the second vibration damping plate 44, refer to Figures 11 to 14As shown, the damping disc 42 is provided with a plurality of first positioning portions 422, the second vibration damping disc 44 is provided with a plurality of second positioning portions 442, and the first vibration damping disc 43 is provided with a plurality of first positioning and matching portions 432 and a plurality of second positioning and matching portions 433. The plurality of first positioning portions 422 correspond one-to-one with the plurality of first positioning and matching portions 432. The first positioning portions 422 and the first positioning and matching portions 432 are positioned and matched to fix the damping disc 42 and the first vibration damping disc 43. The plurality of second positioning portions 442 and the plurality of second positioning and matching portions 433 correspond one-to-one with each other. The second positioning portions 442 and the second positioning and matching portions 433 are positioned and matched to fix the positions of the first vibration damping disc 43 and the second vibration damping disc 44, thereby connecting the damping disc 42, the first vibration damping disc 43, and the second vibration damping disc 44 to form the vibration damping assembly 40.

[0054] In the embodiments provided in this application, refer to Figure 14 As shown, the first positioning portion 422 includes a first positioning column 4221, a buckle 4222 is provided at the top of the first positioning column 4221, and the first positioning matching portion 432 is a first positioning hole 4321. After the first positioning column 4221 passes through the first positioning hole 4321, on the one hand, the damping plate 42 and the first vibration damping plate 43 are fixed in position, and on the other hand, the relative rotation between the first vibration damping plate 43 and the damping plate 42 can be limited. Figure 13 As shown, the second positioning portion 442 includes a second positioning column 4421, and two positioning blocks 4422 are provided at the top of the second positioning column 4421. The second positioning matching portion 433 includes two second positioning holes 4331. The two positioning blocks 4422 correspond to the two second positioning holes 4331. The two positioning blocks 4422 are respectively inserted into the corresponding second positioning holes 4331 to fix the positions of the first vibration damping plate 43 and the second vibration damping plate 44.

[0055] In order to further ensure the position stability between the damping disc 42 and the first vibration damping disc 43, a third limiting portion 50 is provided between the damping disc 42 and the first vibration damping disc 43. The third limiting portion 50 is used to limit the circumferential rotation of the first positioning portion 422, thereby making the positioning and matching between the first positioning portion 422 and the second positioning matching portion 433 more stable. In a feasible embodiment, referring to Figure 15 As shown, the third limiting portion 50 includes a limiting ring 51 and a plurality of second limiting grooves 52 arranged along the inner ring of the limiting ring 51. The plurality of second limiting grooves 52 are arranged at intervals on the inner ring of the limiting ring 51. When the first vibration damping plate 43 and the damping plate 42 are positioned, the first positioning column 4221 can be embedded in a second limiting groove 52. The outer wall of the first positioning column 4221 is abutted against the inner wall of the second limiting groove 52 to limit the first positioning portion 422 from rotating in the circumferential direction.

[0056] Based on the above embodiments, the working principle of the torque damper of the present application is as follows: the torque generated when the engine is working is transmitted to the inertia disk 10, and the second limiting portion 14 applies a pressing force to the first elastic member 31, so that the first elastic member 31 accumulates elastic force and transmits the elastic force to the friction member 32. The friction member 32 is acted upon by the elastic force and a friction torque is generated between the friction member 32 and the transmission member 33. The transmission member 33 transmits the friction torque to the second vibration damping disk 44 and the first vibration damping disk 43 in sequence, thereby causing the multiple second elastic members 41 on the vibration damping assembly 40 to be repeatedly compressed to alleviate the fluctuation of the speed. Under the buffering action of the multiple second elastic members 41, the torque generated by the engine is rapidly attenuated and finally transmitted to the transmission system through the damping disk 42.

[0057] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. A torque damper, characterized in that: include: An inertia disc, the inertia disc having an accommodating cavity, the accommodating cavity having an opening formed on a surface of the inertia disc, the sidewall of the accommodating cavity being provided with a plurality of first limiting portions, the plurality of first limiting portions being spaced apart and arranged on the sidewall of the accommodating cavity; a cover plate disposed in the accommodating cavity, the cover plate having a first surface and a second surface disposed opposite to each other, a plurality of first position-limiting fitting portions spaced apart along the outer circumference of the cover plate, the plurality of first position-limiting fitting portions corresponding to the plurality of first position-limiting portions one-to-one, and the first position-limiting portions and the first position-limiting fitting portions forming a position-limiting fit; A transmission assembly includes a first elastic member, a friction member, and a transmission member, wherein the first elastic member is in contact with the first surface, the friction members include two, and opposite sides of the transmission member are respectively in contact with one of the friction members, one of the friction members is in contact with the second surface, and the other of the friction members is in contact with the bottom wall of the accommodating cavity, and a first assembly space is formed between the cover plate and the transmission assembly; The vibration damping assembly is arranged in the first assembly space. The transmission member is connected to the vibration damping assembly. The vibration damping assembly includes a plurality of second elastic members, which are arranged at intervals along the circumference of the vibration damping assembly.

2. The torque damper according to claim 1, characterized in that The vibration damping assembly includes a damping plate, a first vibration damping plate and a second vibration damping plate, the damping plate is located between the first vibration damping plate and the second vibration damping plate, the transmission member is connected to the second vibration damping plate, a plurality of first mounting holes are provided in the circumference of the damping plate, a plurality of second mounting holes are provided in the circumference of the first vibration damping plate, a plurality of third mounting holes are provided in the circumference of the second vibration damping plate, the plurality of first mounting holes, the plurality of second mounting holes and the plurality of third mounting holes are arranged in a one-to-one correspondence, the first mounting holes and the corresponding second mounting holes and the third mounting holes form a second assembly space, and each second assembly space is provided with a second elastic member.

3. The torque damper according to claim 1, wherein: The accommodating chamber includes at least a first chamber and a second chamber that are interconnected. The diameter of the first chamber is larger than the diameter of the second chamber. A step surface is formed between the first chamber and the second chamber. One of the friction parts abuts against the second surface, and the other friction part abuts against the step surface.

4. The torque damper according to claim 1, characterized in that The side walls of the accommodating cavity are provided with a plurality of second limiting portions at intervals, and the first limiting portion is formed between adjacent second limiting portions. The outer circumference of the first elastic member is provided with a plurality of second limiting matching portions at intervals, and the plurality of second limiting matching portions are arranged in a one-to-one correspondence with the second limiting portion, and a limiting fit is formed between the second limiting portion and the second limiting matching portions.

5. The torque damper according to claim 4, characterized in that: The first limiting portion is a first limiting groove provided on the side wall of the accommodating cavity, and the first limiting matching portion is a first protrusion provided on the outer circumference of the cover plate. The first protrusion can be embedded in the first limiting groove to limit the relative rotation of the cover plate and the inertia disk.

6. The torque damper according to claim 5, characterized in that The second limiting portion is a limiting protrusion provided on the side wall of the accommodating cavity, and the second limiting matching portion is a second protrusion provided on the outer circumference of the first elastic member. The second protrusion can abut against the limiting protrusion to form a limiting match.

7. The torque damper according to claim 1, characterized in that: A first assembly hole is provided on the cover plate, a second assembly hole is provided on the first elastic member, a third assembly hole is provided on the friction member, and a fourth assembly hole is provided on the transmission member. The first assembly hole, the second assembly hole, the third assembly hole and the fourth assembly hole are coaxially arranged to form the first assembly space.

8. The torque damper according to claim 2, characterized in that: The damping disc is provided with a plurality of first positioning portions, and the first vibration damping disc is provided with a plurality of first positioning matching portions. The plurality of first positioning portions correspond one-to-one to the plurality of first positioning matching portions. The first positioning portions form a positioning match with the corresponding first positioning matching portions to fix the damping disc and the first vibration damping disc.

9. The torque damper according to claim 8, characterized in that The second vibration damping disc is provided with a plurality of second positioning parts, and the first vibration damping disc is provided with a plurality of second positioning matching parts. The plurality of second positioning parts correspond one-to-one with the plurality of second positioning matching parts to fix the positions of the first vibration damping disc and the second vibration damping disc.

10. The torque damper according to claim 9, characterized in that The damping disc is provided with a third limiting portion, and the third limiting portion is used to limit the circumferential rotation of the first positioning portion.

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