Lock-up damper

• US 7,837,018 B2
• Filed: 07/11/2008
• Issued: 11/23/2010
• Est. Priority Date: 07/20/2007
• Status: Expired due to Fees

• Current Assignee: Exedy Corporation
• Original Assignee: Exedy Corporation
• Inventors: Nakamura, Takeyuki
• Primary Examiner(s): Lorence; Richard M.
• Application Number:
  US12/171,874
• Publication Number:
  US 20090020385A1
• Time in Patent Office: 865 Days
• Field of Search: 192/213.2, 192/213.21, 464/68.8
• US Class Current: 192/3.3
• CPC Class Codes: F16H 2045/021 three chamber system, i.e. comprising a separated, closed chamber specially adapted for actuating a lock-up clutch
• CPC Class Codes: F16H 2045/0226 comprising two or more vibration dampers
• CPC Class Codes: F16H 2045/0231 arranged in series
• CPC Class Codes: F16H 2045/0247 having a turbine with hydrodynamic damping means
• CPC Class Codes: F16H 2045/0284 Multiple disk type lock-up clutch
• CPC Class Codes: F16H 45/02 with mechanical clutches for bridging a fluid gearing of the hydrokinetic type control of torque converter lock-up clutches F16H61/14

Abstract

There is provided a lock-up damper that affords greater design latitude. A lock-up damper 7 comprises a pair of input rotors 71 that rotate integrally, an intermediate plate 73, a turbine hub 43, an output rotor 72, a plurality of first springs 74, and a plurality of second springs 75. The turbine hub 43 is disposed so as to be capable of rotating within a specific angle range with respect to the intermediate plate 73, and is able to come into contact in the rotational direction with the intermediate plate 73. A pair of the output rotors 72 are disposed to the inside in the radial direction of the pair of input rotors 71, and are fixed to the turbine hub 43.

Claims

1. A lock-up damper, comprising:

pair of input members being configured to rotate integrally;

an intermediate member being rotatably disposed with respect to the input members;

turbine hub being rotatably disposed within a specific angle range with respect to the intermediate member, and being configured to contact the intermediate member in the rotational direction;

pair of output members being disposed to the inside in the radial direction of the pair of input members, and being fixed to the turbine hub;

at least one first elastic member elastically linking the input members and the intermediate member in the rotational direction, and being supported by the pair of input members to be elastically deformable in the rotational direction; and

at least one second elastic member elastically linking the intermediate member and the output members in the rotational direction, and being supported by the pair of output members to be elastically deformable in the rotational direction.

2. The lock-up damper according to claim 1, wherein

the intermediate member has an annular main component and a plurality of inner peripheral teeth extending inward in the radial direction from the inner peripheral part of the main component, and

the turbine hub has an annular hub main body configured to be linked to an input shaft of a transmission, and a plurality of outer peripheral teeth extending outward in the radial direction from the outer peripheral part of the hub main body and configured to contact with the inner peripheral teeth in the rotational direction.

3. The lock-up damper according to claim 2, wherein

the hub main body has a cylindrical component that is configured to be linked to the input shaft, and an annular flange component that extends outward in the radial direction from the cylindrical component, and

the outer peripheral teeth extend outward in the radial direction from the outer peripheral part of the flange component.

4. The lock-up damper according to claim 3, wherein

the intermediate member is disposed between the pair of output members in the axial direction, and

the pair of output members are fixed to the turbine hub to flank the outer peripheral teeth and/or the flange component in the axial direction.

5. The lock-up damper according to claim 4, wherein

the axial center of the intermediate member substantially coincides with the axial center of the flange component.

6. The lock-up damper according to claim 5, further comprising

a first friction member, which has an annular first friction component flanked in the axial direction by the input members and the intermediate member, and at least one first protrusion that extends in the axial direction from the first friction component,

wherein the intermediate member has at least one first hole, and the at least one first protrusion is fitted into the first hole.

7. The lock-up damper according to claim 6, further comprising

a second friction member, which has an annular second friction component flanked in the axial direction by the intermediate member and the output members, and at least one second protrusion that extends in the axial direction from the second friction component,

wherein the intermediate member has at least one second hole, and the at least one second protrusion is fitted into the second hole.

8. The lock-up damper according to claim 7, wherein

the second hole is disposed on the outside in the radial direction of the inner peripheral teeth of the intermediate member.

9. The lock-up damper according to claim 8, wherein

the turbine hub rotatably supports a turbine shell of the turbine, or a member fixed to the turbine shell, and

the input members rotate integrally with a drive plate fixed to the turbine shell.

10. The lock-up damper according to claim 3, further comprising

a first friction member, which has an annular first friction component flanked in the axial direction by the input members and the intermediate member, and at least one first protrusion that extends in the axial direction from the first friction component,

wherein the intermediate member has at least one first hole, and the at least one first protrusion is fitted into the first hole.

11. The lock-up damper according to claim 2, further comprising

a first friction member, which has an annular first friction component flanked in the axial direction by the input members and the intermediate member, and at least one first protrusion that extends in the axial direction from the first friction component,

wherein the intermediate member has at least one first hole, and the at least one first protrusion is fitted into the first hole.

12. The lock-up damper according to claim 11, further comprising

a second friction member, which has an annular second friction component flanked in the axial direction by the intermediate member and the output members, and at least one second protrusion that extends in the axial direction from the second friction component,

wherein the intermediate member has at least one second hole, and the at least one second protrusion is fitted into the second hole.

13. The lock-up damper according to claim 1, further comprising

a first friction member, which has an annular first friction component flanked in the axial direction by the input members and the intermediate member, and at least one first protrusion that extends in the axial direction from the first friction component,

wherein the intermediate member has at least one first hole, and the at least one first protrusion is fitted into the first hole.

14. The lock-up damper according to claim 13, further comprising

a second friction member, which has an annular second friction component flanked in the axial direction by the intermediate member and the output members, and at least one second protrusion that extends in the axial direction from the second friction component,

wherein the intermediate member has at least one second hole, and the at least one second protrusion is fitted into the second hole.

15. The lock-up damper according to claim 14, wherein

the second hole is disposed on the outside in the radial direction of the inner peripheral teeth of the intermediate member.

16. The lock-up damper according to claim 15, wherein

the turbine hub rotatably supports a turbine shell of the turbine, or a member fixed to the turbine shell, and

the input members rotate integrally with a drive plate fixed to the turbine shell.

17. The lock-up damper according to claim 1, further comprising

a friction member, which has an annular friction component flanked in the axial direction by the intermediate member and the output members, and at least one protrusion that extends in the axial direction from the friction component,

wherein the intermediate member has at least one hole, and the at least one protrusion is fitted into the hole.

18. The lock-up damper according to claim 17, wherein

the hole is disposed on the outside in the radial direction of the inner peripheral teeth of the intermediate member.

19. The lock-up damper according to claim 18, wherein

the turbine hub rotatably supports a turbine shell of the turbine, or a member fixed to the turbine shell, and

the input members rotate integrally with a drive plate fixed to the turbine shell.

20. The lock-up damper according to claim 1, wherein

the turbine hub rotatably supports a turbine shell of the turbine, or a member fixed to the turbine shell, and

the input members rotate integrally with a drive plate fixed to the turbine shell.