Damper for motor vehicle torque transmission device

Patent metadata

Field	Value
Publication number	US-2016010697-A1
Application number	US-201514792175-A
Country	US
Kind code	A1
Filing date	Jul 6, 2015
Priority date	Jul 11, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

A damper for a motor vehicle torque transmission device, in particular of the long travel damper type, having a torque input element ( 22 ), a torque output element ( 28 ), at least one group ( 26 ) of differing elastic members ( 26 a, 26 b ) mounted between the torque input element and torque output element and acting oppositely to the rotation of the torque input element ( 22 ) and torque output element ( 28 ) with respect to one another, the elastic members ( 26 a, 26 b ) of the group of elastic members being arranged in series by means of a phasing member ( 30 ) so that the elastic members ( 26 a, 26 b ) of the group ( 26 ) of elastic members deform in phase with one another, the group ( 26 ) of elastic members ( 26 a, 26 b ) being received in a receptacle ( 44 ) that is asymmetrical with respect to a median radial plane of the receptacle ( 44 ).

First claim

1 . A damper for a motor vehicle torque transmission device having a torque input element ( 22 ), a torque output element ( 28 ), at least one group ( 26 ) of differing elastic members ( 26 a, 26 b ) mounted between the torque input element and torque output element and acting oppositely to the rotation of the torque input element ( 22 ) and torque output element ( 28 ) with respect to one another, the elastic members ( 26 a, 26 b ) of the group of elastic members being arranged in series by means of a phasing member ( 30 ) so that the elastic members ( 26 a, 26 b ) of the group ( 26 ) of elastic members deform in phase with one another, the group ( 26 ) of elastic members ( 26 a, 26 b ) being received in a receptacle ( 44 ) that is asymmetrical with respect to a median radial plane of the receptacle ( 44 ).

2 . The damper according to claim 1 , in which the receptacle ( 44 ) forms a bent tube whose bending radius, measured along the receptacle with respect to the center of the damper, is variable.

3 . The damper according to claim 1 , in which the cross section of the receptacle ( 44 ) has a partly annular shape over the entire length of the receptacle ( 44 ).

4 . The damper according to claim 1 , in which each receptacle ( 44 ) has first ( 44 a ) and second angular segments ( 44 b ) having substantially constant and different average bending radii, and a third segment ( 44 c ) connecting the first and second segments ( 44 a, 44 b ).

5 . The damper according to claim 4 , in which the third segment is configured so that the walls delimiting the receptacle are continuous and preferably exhibit no breaks in slope.

6 . The damper according to claim 1 , in which the torque input member has a first ( 22 a ) and a second guide washer ( 22 b ), the receptacle being at least partly delimited by a flanged orifice ( 46 , 48 ) in the first and/or the second guide washer ( 22 a, 22 b ).

7 . The damper according to claim 4 , in which at least one, preferably both, of the first segment and the second segment is configured to ensure that, with the torque transmission device in a position corresponding to an absence of torque transmission from the torque input element to the torque output element, at least one elastic member, preferably both, is in contact with a wall of the receptacle at six different points, two of the contact points preferably being located on a radially inner wall of the receptacle and the other four points on a radially outer wall of the receptacle.

8 . The damper according to claim 1 , in which the elastic members ( 26 a, 26 b ) are helical springs, preferably straight.

9 . The damper according to claim 1 , in which each group ( 26 ) of elastic members has at least first ( 26 a ) and second helical springs ( 26 b ) having an identical diameter and/or differing lengths.

10 . The damper according to claim 9 , in which the group ( 26 ) of elastic members ( 26 a, 26 b ) furthermore has at least one third helical spring that has a length less than the length of the first helical spring ( 26 a ), has a diameter less than the diameter of the first helical spring ( 26 a ), and is disposed inside the first helical spring ( 26 a ).

11 . A motor vehicle torque transmission device ( 10 ) having:
a clutch ( 32 ) comprising an input element ( 34 ) coupled to a first shaft ( 12 ) and an output element ( 22 ) coupled to a second shaft ( 14 ), and a damper according to claim 1 , said damper being disposed between the output element of the clutch and the second shaft.

12 . The device according to claim 11 , furthermore having a bladed impeller wheel ( 16 ) and a bladed turbine wheel ( 18 ), the bladed impeller wheel being configured to hydrokinetically drive the bladed turbine wheel ( 18 ) by means of a reactor ( 20 ), the clutch ( 32 ) and the bladed turbine wheel ( 18 ) being coupled to said output element ( 22 ).

13 . The damper according to claim 2 , in which the cross section of the receptacle ( 44 ) has a partly annular shape over the entire length of the receptacle ( 44 ).

14 . The damper according to claim 2 , in which each receptacle ( 44 ) has first ( 44 a ) and second angular segments ( 44 b ) having substantially constant and different average bending radii, and a third segment ( 44 c ) connecting the first and second segments ( 44 a, 44 b ).

15 . The damper according to claim 3 , in which each receptacle ( 44 ) has first ( 44 a ) and second angular segments ( 44 b ) having substantially constant and different average bending radii, and a third segment ( 44 c ) connecting the first and second segments ( 44 a, 44 b ).

16 . The damper according claim 2 , in which the torque input member has a first ( 22 a ) and a second guide washer ( 22 b ), the receptacle being at least partly delimited by a flanged orifice ( 46 , 48 ) in the first and/or the second guide washer ( 22 a, 22 b ).

17 . The damper according claim 3 , in which the torque input member has a first ( 22 a ) and a second guide washer ( 22 b ), the receptacle being at least partly delimited by a flanged orifice ( 46 , 48 ) in the first and/or the second guide washer ( 22 a, 22 b ).

18 . The damper according claim 4 , in which the torque input member has a first ( 22 a ) and a second guide washer ( 22 b ), the receptacle being at least partly delimited by a flanged orifice ( 46 , 48 ) in the first and/or the second guide washer ( 22 a, 22 b ).

19 . The damper according claim 5 , in which the torque input member has a first ( 22 a ) and a second guide washer ( 22 b ), the receptacle being at least partly delimited by a flanged orifice ( 46 , 48 ) in the first and/or the second guide washer ( 22 a, 22 b ).

Assignees

• Valeo Embrayages

Inventors

• Hennebelle Michael
• Verhoog Roel

Classifications

• F16F15/12373 Primary

  the sets of springs being arranged at substantially the same radius · CPC title

• F16D3/14 Primary

  combined with a friction coupling for damping vibration or absorbing shock · CPC title

• F16H45/02

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

• F16F15/13492

  the sets of springs being arranged at substantially the same radius · CPC title

• F16F15/145

  Masses mounted with play with respect to driving means thus enabling free movement over a limited range · CPC title