Hydrokinetic torque coupling device for motor vehicle

Patent metadata

Field	Value
Publication number	US-10161492-B2
Application number	US-201514873325-A
Country	US
Kind code	B2
Filing date	Oct 2, 2015
Priority date	Oct 2, 2015
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A hydrokinetic torque coupling device for a motor vehicle, comprises a torque input element (11) intended to be coupled to a crankshaft (1), an impeller wheel (3) non-moveably coupled to the torque input element (11) and configured to hydrokinetically drive a turbine wheel (4), a torque output element (8) intended to be coupled to a transmission input shaft (2), a clutch (10) configured to rotationally couple the torque input element (11) and the torque output element (8) in an engaged position through a damping device (18, 22) and to rotationally uncouple the torque input element (11) and the torque output element (8) in a disengaged position. The damping device (18, 22) is configured to act against the rotation of the torque input element (11) relative to the torque output element (8), in the engaged position of the clutch (10).

First claim

The invention claimed is:

1. A hydrokinetic torque coupling device for a motor vehicle, the hydrokinetic torque coupling device having an axis (X) and comprising:
a torque input element ( 11 ) intended to be coupled to a crankshaft ( 1 );
a turbine wheel ( 4 );
an impeller wheel ( 3 ) non-rotatably coupled to the torque input element ( 11 ) and configured to hydrokinetically drive the turbine wheel ( 4 );
a damping device ( 18 , 22 );
a torque output element ( 8 ) intended to be coupled to a transmission input shaft ( 2 ); and
a clutch ( 10 ) configured to rotationally couple the torque input element ( 11 ) and the torque output element ( 8 ) in an engaged position, through the damping device ( 18 , 22 ), and to rotationally uncouple the torque input element ( 11 ) and the torque output element ( 8 ) in a disengaged position;
the damping device ( 18 , 22 ) configured to act against the rotation of the torque input element ( 11 ) relative to the torque output element ( 8 ), in the engaged position of the clutch ( 10 );
the clutch ( 10 ) comprising a piston ( 25 ) movable between the engaged position wherein the piston ( 25 ) is rotationally coupled to the torque input element ( 11 ) and the disengaged position wherein the piston ( 25 ) is rotationally uncoupled from the torque input element ( 11 );
the damping device ( 18 , 22 ) comprising at least one elastic blade ( 22 ) and a supporting member ( 18 ), the at least one elastic blade ( 22 ) being non-rotatably coupled to the piston ( 25 ) or to the torque output element ( 8 ) and being elastically supported by the supporting member ( 18 );
the supporting member ( 18 ) being carried by the torque output element ( 8 ) or by the piston ( 25 );
the at least one elastic blade ( 22 ) configured to bend upon rotation of the piston ( 25 ) relative to the torque output element ( 8 ).

2. The hydrokinetic torque coupling device according to claim 1 , further comprising an annular flange ( 17 ) which radially extends, wherein a radially internal periphery of the annular flange ( 17 ) is fastened to the torque output element ( 8 ), and wherein the supporting element ( 18 ) or the elastic blade ( 22 ) is mounted on a radially external periphery of the annular flange ( 17 ).

3. The hydrokinetic torque coupling device according to claim 2 , wherein the torque output element ( 8 ) comprises an annular rim ( 14 ) which radially extends outwards, and wherein the flange ( 17 ) and the turbine wheel ( 4 ) are fastened to the rim ( 14 ).

4. The hydrokinetic torque coupling device according to claim 2 , wherein the elastic blade ( 22 ), or respectively the supporting member ( 18 ), is connected to the piston ( 25 ) through a linking member ( 23 ).

5. The hydrokinetic torque coupling device according to claim 2 , wherein the torque output element comprises a central hub ( 8 ).

6. The hydrokinetic torque coupling device according to claim 2 , wherein the elastic blade ( 22 ) is adapted to be moved together with the piston ( 25 ) along the axis (X) of the torque converter, relative to the supporting member ( 18 ).

7. The hydrokinetic torque coupling device according to claim 1 , further comprising a single flange ( 17 ) connecting the supporting member ( 18 ) or the elastic blade ( 22 ) with the torque output element ( 8 ).

8. The hydrokinetic torque coupling device according to claim 7 , wherein the elastic blade ( 22 ), or respectively the supporting member ( 18 ), is connected to the piston ( 25 ) through a linking member ( 23 ).

9. The hydrokinetic torque coupling device according to claim 7 , wherein the torque output element comprises a central hub ( 8 ).

10. The hydrokinetic torque coupling device according to claim 7 , wherein the elastic blade ( 22 ) is adapted to be moved together with the piston ( 25 ) along the axis (X) of the torque converter, relative to the supporting member ( 18 ).

11. The hydrokinetic torque coupling device according to claim 1 , wherein the elastic blade ( 22 ) or the supporting member ( 18 ) is connected to the piston ( 25 ) through a linking member ( 23 ).

12. The hydrokinetic torque coupling device according to claim 11 , wherein the torque output element comprises a central hub ( 8 ).

13. The hydrokinetic torque coupling device according to claim 11 , wherein the elastic blade ( 22 ) is adapted to be moved together with the piston ( 25 ) along the axis (X) of the torque converter, relative to the supporting member ( 18 ).

14. The hydrokinetic torque coupling device according to claim 1 , wherein the torque output element comprises a central hub ( 8 ).

15. The hydrokinetic torque coupling device according to claim 14 , wherein the elastic blade ( 22 ) is adapted to be moved together with the piston ( 25 ) along the axis (X) of the torque converter, relative to the supporting member ( 18 ).

16. The hydrokinetic torque coupling device according to claim 1 , wherein the elastic blade ( 22 ) is moveable together with the piston ( 25 ) along the axis (X) of the torque coupling device, relative to the supporting member ( 18 ).

17. The hydrokinetic torque coupling device according to claim 1 , wherein the supporting member comprises a rolling body ( 18 ) mounted to pivot about a shaft ( 19 ), with the shaft ( 19 ) being fastened to the flange ( 17 ).

18. The hydrokinetic torque coupling device according to claim 1 , further comprising a reactor ( 5 ), wherein the impeller wheel ( 3 ) is configured to hydrokinetically drive the turbine wheel ( 4 ) through the reactor ( 5 ).

19. A hydrokinetic torque coupling device for a motor vehicle, the hydrokinetic torque coupling device has an axis (X) and comprising:
a torque input element ( 11 ) intended to be coupled to a crankshaft ( 1 );
a turbine wheel ( 4 );
an impeller wheel ( 3 ) non-rotatably coupled to the torque input element ( 11 ) and configured to hydrokinetically drive the turbine wheel ( 4 );
a damping device ( 18 , 22 );
a torque output element ( 8 ) intended to be coupled to a transmission input shaft ( 2 ); and
a clutch ( 10 ) configured to rotationally couple the torque input element ( 11 ) and the torque output element ( 8 ) in an engaged position, through the damping device ( 18 , 22 ), and to rotationally uncouple the torque input element ( 11 ) and the torque output element ( 8 ) in a disengaged position;
the damping device ( 18 , 22 ) configured to act against the rotation of the torque input element ( 11 ) relative to the torque output element ( 8 ), in the engaged position of the clutch means ( 10 );
the clutch ( 10 ) comprising a piston ( 25 ) movable between the engaged position wherein the piston ( 25 ) is rotationally coupled to the torque input element ( 11 ) and the disengaged position wherein the piston ( 25 ) is rotationally uncoupled from the torque input element ( 11 );
the damping device ( 18 , 22 ) comprising at least one elastic blade ( 22 ) and a supporting member ( 18 ), the at least one elastic blade ( 22 ) being non-rotatably coupled to the piston ( 25 ) or to the torque output element ( 8 ) and being elastically supported by the supporting member ( 18 );
the supporting member ( 18 ) being carried by the torque output element ( 8 ) or by the piston ( 25 );
the at least one elastic blade ( 22 ) configured to bend upon rotation of the piston ( 25 ) relative to the torque output element ( 8 );
the at least one elastic blade ( 22 ) or the supporting member ( 18 ) linked with the piston ( 25 ) through at least one member ( 28 ) elastically deformable along the axis (X) of the torq

Assignees

• Valeo Embrayages

Inventors

• Depraete Alexandre

Classifications

• F16F2230/0064

  using a cam · CPC title

• F16H45/02 Primary

  with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H61/14) · CPC title

• F16H2045/0278

  comprising only two co-acting friction surfaces · CPC title

• F16F15/1333

  Spiral springs, e.g. lying in one plane, around axis of rotation · CPC title

• F16H2045/0221

  with damping means · CPC title