Integrated torsion-limiting shock absorber with spline floating function

Abstract

This utility model discloses an integrated torsion-limiting vibration damper with spline floating function, including a torsion limiter sub-assembly and a vibration damper sub-assembly. The torsion limiter sub-assembly includes a flexible disc, a crankshaft gasket, and a torsion-limiting cover. The vibration damper sub-assembly includes a steel sheet, a splined bushing, a spring, a bearing ring, a flat pin, a bearing damping plate, a wave spring, a bushing plate, a damping plate, a damping disc spring, and a cover plate; wherein the splined bushing and the bushing plate are separate structures. Multiple crankshaft bolts connect the damper to the engine crankshaft, transmitting engine power to the torsion-limiting vibration damper. The advantages of this utility model are improved ability of the integrated torsion-limiting vibration damper to handle eccentric working conditions, reduced parts processing costs, and extended service life.

Description

Technical Field

[0001] This utility model relates to an integrated torsion damper, and more particularly to an integrated torsion damper with a spline floating function. Background Technology

[0002] Torque-limiting dampers are mainly used in automotive powertrain systems. They are components installed between the engine and transmission to provide vibration reduction, noise reduction, and overload protection for automobiles.

[0003] Currently, in hybrid electric vehicles, due to the use of internal combustion engines, it is generally necessary to install a damper at the crankshaft output end of the engine. Also, due to the special structure of some hybrid electric vehicle powertrains, there is no clutch installed between the engine and the transmission to limit torque. Therefore, a torque-limiting damper is generally installed between the engine and the transmission.

[0004] Depending on the different requirements of powertrain assembly, torsion dampers are mainly divided into split type and integrated type. Integrated torsion dampers integrate the flywheel and the torsion damper into one unit, which can reduce one powertrain assembly process while achieving the same damping performance.

[0005] Previously, due to the special structure of integrated torsion dampers, the spline and bushing plate were generally designed as a single unit. The integrated spline is difficult and costly to process, and the adjustment also weakens the torsion damper's ability to cope with eccentric working conditions. This application innovatively designs an integrated torsion damper with a spline floating function, in which the spline and bushing plate are designed separately, to improve the torsion damper's ability to cope with eccentric working conditions, while reducing the cost of parts processing. This is the area that this application focuses on improving. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide an integrated torsion damper with spline floating function, thereby improving the ability of the torsion damper to cope with eccentric working conditions.

[0007] To solve the above technical problems, this utility model provides an integrated torsion damper with spline floating function, which integrates the flywheel and the torsion damper into a single structure. The torsion damper includes a torsion damper sub-assembly and a damper sub-assembly.

[0008] The torque limiter subassembly includes a flexible disc, crankshaft gasket, torque limiting friction plate, torque limiting friction steel plate, rivet, torque limiting pressure plate, torque limiting disc spring, and torque limiting cover.

[0009] The flexible disk has multiple crankshaft bolt holes A arranged circumferentially on its inner diameter, and the crankshaft gasket has multiple crankshaft bolt holes B arranged circumferentially. The number of crankshaft bolt holes A and crankshaft bolt holes B are the same and their positions correspond one-to-one. The flexible disk and the crankshaft gasket are connected by an interference fit through pin holes.

[0010] One torsion-limiting friction plate is arranged on each side of the torsion-limiting friction steel plate, and the two torsion-limiting friction plates are in close contact with the two sides of the torsion-limiting friction steel plate. A torsion-limiting flexible disc is arranged on one side of one torsion-limiting friction plate, and a torsion-limiting pressure plate is arranged on one side of the torsion-limiting pressure plate. A torsion-limiting disc spring is arranged on the other side of the torsion-limiting disc spring, and a torsion-limiting cover is arranged on the other side of the torsion-limiting disc spring. The torsion-limiting cover and the flexible disc are riveted together. By controlling the height of the torsion-limiting cover and the flexible disc, the compression height of the torsion-limiting disc spring is adjusted to generate the required clamping force, thus forming the torsion limiter sub-assembly.

[0011] The shock absorber sub-assembly includes steel sheets, splined bushings, springs, bearing rings, flat pins, bearing damping plates, wave springs, bushing plates, damping plates, damping disc springs, and cover plates; wherein, the splined bushings and bushing plates are separate structures.

[0012] The steel sheet has multiple crankshaft bolt holes C arranged circumferentially at its inner diameter position.

[0013] The bushing plate has multiple crankshaft bolt holes D arranged circumferentially at its inner diameter position.

[0014] The cover plate has multiple crankshaft bolt holes E arranged circumferentially at its inner diameter position.

[0015] Several springs are circumferentially arranged in the spring windows of the bushing plate. Steel plates and cover plates are arranged on both sides of the bushing plate. Damping plates and damping disc springs are arranged between the bushing plate and the cover plate. The spline bushing is arranged at the center of the bushing plate. A bearing ring is arranged between the spline bushing and the steel plate. A bearing damping plate and wave spring are arranged between the spline bushing and the cover plate. The number of spring windows circumferentially arranged on the steel plate and the cover plate corresponds to the number of springs. The steel plate and the cover plate are riveted together by several flat pins to form a shock absorber sub-assembly.

[0016] The torsion limiter sub-assembly and the vibration damper sub-assembly are riveted together by several flat pins to form the torsion limiter vibration damper assembly.

[0017] The crankshaft bolt holes C, D, and E are located on the torsion damper assembly between the outer diameter of the spline bushing and the radius of the spring arrangement. The number of these three holes is the same as the number of crankshaft bolt holes A and B, and their positions correspond one-to-one. The diameters of crankshaft bolt holes C, D, and E allow the large end of the crankshaft bolt to pass through, while the diameters of crankshaft bolt holes A and B allow the threaded end of the crankshaft bolt to pass through.

[0018] The beneficial effects of this utility model are as follows: within a limited space, an innovative structure with spline floating function is designed, which improves the ability of the integrated torsion damper to cope with eccentric working conditions, while reducing the cost of parts processing and increasing service life. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of a specific embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the AA section of a specific embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of crankshaft bolt installation according to a specific embodiment of the present utility model;

[0023] Figure 4 This is an exploded view of a specific embodiment of the present utility model;

[0024] Explanation of the labels in the diagram

[0025] 1-Flexible disc; 101-Crankshaft bolt hole A

[0026] 2-Crankshaft gasket; 201-Crankshaft bolt hole B

[0027] 3-Torque-limiting friction plate; 4-Torque-limiting friction steel plate;

[0028] 5 - Steel sheet; 501 - Crankshaft bolt hole C;

[0029] 6-Rivet; 7-Splined bushing;

[0030] 8-Spring; 9-Bearing ring;

[0031] 10-Flat pin; 11-Bearing damping plate;

[0032] 12-Wave spring;

[0033] 13-Shaft sleeve plate; 1301-Crankshaft bolt hole D;

[0034] 14-Damping plate; 15-Damping disc spring;

[0035] 16-Crankshaft bolt hole E;

[0036] 17 - Torsion limiting pressure plate; 18 - Torsion limiting disc spring;

[0037] 19 - Torque cap; 20 - Crankshaft bolt. Detailed Implementation

[0038] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0039] Figure 1A schematic diagram of a specific embodiment of the present invention is shown; Figure 2 A schematic diagram of the AA section of a specific embodiment of the present invention is shown; Figure 3 A schematic diagram of crankshaft bolt installation according to a specific embodiment of this utility model is shown; Figure 4 An exploded view of a specific embodiment of the present invention is shown.

[0040] like Figure 1 and Figure 2 As shown, this utility model provides an integrated torsion damper with spline floating function, which integrates the flywheel and the torsion damper into a single structure. The torsion damper includes two parts: a torsion damper sub-assembly and a damper sub-assembly.

[0041] like Figure 4 As shown, the torque limiter subassembly includes a flexible disc 1, a crankshaft washer 2, a torque-limiting friction plate 3, a torque-limiting friction steel plate 4, rivets 6, a torque-limiting pressure plate 17, a torque-limiting disc spring 18, and a torque-limiting cover 19. The flexible disc 1 has multiple crankshaft bolt holes A101 arranged circumferentially on its inner diameter. The crankshaft washer 2 has multiple crankshaft bolt holes A201 arranged circumferentially. The number of crankshaft bolt holes A101 and B201 are the same and their positions correspond one-to-one. The flexible disc 1 and the crankshaft washer 2 are connected by an interference fit through pin holes. One torque-limiting friction plate 3 is arranged on each side of the torque-limiting friction steel plate 4, and the two torque-limiting friction plates 3 are tightly attached to both sides of the torque-limiting friction steel plate 4. The torque-limiting disc 1 is arranged on one side of one torque-limiting friction plate 3, and the torque-limiting pressure plate 17 is arranged on one side of the other torque-limiting friction plate 3. The torque-limiting disc spring 18 is arranged on the other side of the torque-limiting pressure plate 17, and the torque-limiting cover 19 is arranged on the other side of the torque-limiting disc spring 18. The torsion limiting cover 19 and the flexible disc 1 are riveted together by rivets 6. By controlling the height of the torsion limiting cover 19 and the height of the flexible disc 1, the compression height of the torsion limiting disc spring 18 is adjusted to generate the required clamping force, thereby forming the torsion limiting device sub-assembly.

[0042] The shock absorber sub-assembly includes a steel sheet 5, a splined bushing 7, a spring 8, a bearing ring 9, a flat pin 10, a bearing damping plate 11, a wave spring 12, a bushing plate 13, a damping plate 14, a damping disc spring 15, and a cover plate 16.

[0043] The steel sheet 5 has multiple crankshaft bolt holes C501 arranged circumferentially at its inner diameter position.

[0044] The bushing plate 13 has multiple crankshaft bolt holes D1301 arranged circumferentially at its inner diameter position.

[0045] The cover plate 16 has multiple crankshaft bolt holes E1601 arranged circumferentially at its inner diameter position.

[0046] Several springs 8 are arranged circumferentially in the spring windows of the bushing plate 13. Steel plates 5 and cover plates 16 are arranged on both sides of the bushing plate 13 respectively. Damping plates 14 and damping disc springs 15 are arranged between the bushing plate 13 and the cover plate 16. Spline bushing 7 is arranged at the center of the bushing plate 13. Bearing ring 9 is arranged between the spline bushing 7 and the steel plate 5. Bearing damping plates 11 and wave springs 12 are arranged between the spline bushing 7 and the cover plate 16. The number of spring windows arranged circumferentially on the steel plate 5 and the cover plate 16 corresponds to the number of springs 8. The steel plate 5 and the cover plate 16 are riveted together by several flat pins 10 to form a shock absorber sub-assembly.

[0047] The torsion limiter sub-assembly and the vibration damper sub-assembly are riveted together by several flat pins 10 to form the torsion limiter vibration damper assembly.

[0048] like Figure 3 As shown, the crankshaft bolt holes C501, D1301, and E1601 are located on the torsion damper assembly between the outer diameter of the spline bushing 7 and the arrangement radius of the spring 8. The number of these three holes is the same as the number of crankshaft bolt holes A101 and B201, and their positions correspond one-to-one. The diameters of the crankshaft bolt holes C501, D1301, and E1601 allow the large end of the crankshaft bolt 20 to pass through, while the diameters of the crankshaft bolt holes A101 and B201 allow the threaded end of the crankshaft bolt 20 to pass through.

[0049] The integrated torsion damper of this application is bolted to the engine crankshaft via multiple crankshaft bolts 20, transmitting the engine's power to the torsion damper, and is applied to the powertrain system of hybrid electric vehicles.

[0050] The splined bushing and bushing plate of the integrated torsion damper of this application are separate structures. Through the bearing rings, bearing damping plates and wave springs arranged on the left and right sides of the splined bushing, the splined bushing and bushing plate form a certain angle during the torsion transmission process. Working under this angle condition is the working condition of eccentric operation.

[0051] In this integrated torsion damper, the design of the steel plate, cover plate, and bushing plate is improved to achieve the spline floating function. To achieve the spline floating structure, the crankshaft bolt must pass through the steel plate, cover plate, and bushing plate simultaneously, that is, holes that avoid the crankshaft bolt are simultaneously drilled in the steel plate, cover plate, and bushing plate.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated torsion damper with spline floating function, comprising a torsion limiter sub-assembly and a damper sub-assembly; characterized in that: The torque limiter sub-assembly includes a flexible disc, a crankshaft gasket, and a torque limiting cover. The flexible disc and the crankshaft gasket are connected by an interference fit, and the torque limiting cover is riveted to the flexible disc. By controlling the height of the torque limiting cover and the height of the flexible disc, the compression height of the torque limiting disc spring is adjusted to generate the required clamping force, thereby forming the torque limiter sub-assembly. The vibration damper sub-assembly includes steel sheets, splined bushings, springs, bearing rings, flat pins, bearing damping plates, wave springs, bushing plates, damping plates, damping disc springs, and cover plates. The splined bushing and bushing plate are separate structures. Several springs are circumferentially arranged in the spring windows of the bushing plate. Steel sheets and cover plates are arranged on both sides of the bushing plate. Damping plates and damping disc springs are arranged between the bushing plate and the cover plate. The splined bushing is located at the center of the bushing plate. A bearing ring is arranged between the splined bushing and the steel sheet. A bearing damping plate and wave springs are arranged between the splined bushing and the cover plate. The number of circumferentially arranged spring windows on the steel sheets and cover plates corresponds to the number of springs. The steel sheets and cover plates are riveted together by several flat pins, thus forming the vibration damper sub-assembly. The torsion limiter sub-assembly and the vibration damper sub-assembly are riveted together by several flat pins to form the torsion limiter vibration damper assembly.

2. The integrated torsional damper with spline floating function according to claim 1, characterized in that: The torque limiting assembly also includes a torque limiting friction plate, a torque limiting friction steel plate, rivets, a torque limiting pressure plate, and a torque limiting disc spring. One torque limiting friction plate is arranged on each side of the torque limiting friction steel plate, and the two torque limiting friction plates are closely attached to both sides of the torque limiting friction steel plate. A torque limiting disc is arranged on one side of one torque limiting friction plate, a torque limiting pressure plate is arranged on one side of the other torque limiting friction plate, a torque limiting disc spring is arranged on the other side of the torque limiting pressure plate, and a torque limiting cover is arranged on the other side of the torque limiting disc spring.

3. The integrated torsional damper with spline floating function according to claim 1, characterized in that: The flexible disk has multiple crankshaft bolt holes A arranged circumferentially at its inner diameter position, and the crankshaft gasket has multiple crankshaft bolt holes B arranged circumferentially. The number of crankshaft bolt holes A and crankshaft bolt holes B are the same and their positions correspond one-to-one.

4. The integrated torsional damper with spline floating function according to claim 1, characterized in that: The steel sheet has multiple crankshaft bolt holes C arranged circumferentially at its inner diameter position.

5. The integrated torsional damper with spline floating function according to claim 1, characterized in that: The bushing plate has multiple crankshaft bolt holes D arranged circumferentially at its inner diameter position.

6. The integrated torsional damper with spline floating function according to claim 1, characterized in that: The cover plate has multiple crankshaft bolt holes E arranged circumferentially at its inner diameter position.

7. The integrated torsional damper with spline floating function according to any one of claims 3-6, characterized in that: The crankshaft bolt holes C, D, and E are located on the torsion damper assembly between the outer diameter of the spline bushing and the radius of the spring arrangement. The number of these three holes is the same as the number of crankshaft bolt holes A and B, and their positions correspond one-to-one. The diameters of crankshaft bolt holes C, D, and E allow the large end of the crankshaft bolt to pass through, while the diameters of crankshaft bolt holes A and B allow the threaded end of the crankshaft bolt to pass through.

8. The integrated torsional damper with spline floating function according to claim 1, characterized in that: The integrated torsion damper is bolted to the engine crankshaft through multiple crankshaft bolts, transmitting the engine's power to the torsion damper.

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