Dynamic absorber for torsional vibration damper of hydrokinetic torque coupling device

Patent metadata

Field	Value
Publication number	US-10047845-B2
Application number	US-201614995601-A
Country	US
Kind code	B2
Filing date	Jan 14, 2016
Priority date	Jan 14, 2016
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

A torsional vibration damper assembly for a hydrokinetic torque coupling device, comprises a torsional vibration damper and a dynamic absorber operatively connected to the torsional vibration damper. The torsional vibration damper comprises a driven member rotatable about a rotational axis, a first retainer plate rotatable relative to the driven member coaxially with the rotational axis, and a plurality of damper elastic members interposed between the first retainer plate and the driven member. The damper elastic members elastically couple the first retainer plate to the driven member. The dynamic absorber includes an inertial member. The dynamic absorber is mounted to the torsional vibration damper and is rotationally guided and centered relative to the rotational axis by one of the first retainer plate and the driven member of the torsional vibration damper.

First claim

What is claimed is:

1. A torsional vibration damper assembly for a hydrokinetic torque coupling device, comprising:
a torsional vibration damper; and
a dynamic absorber operatively connected to the torsional vibration damper;
the torsional vibration damper comprising:
a driven member rotatable about a rotational axis;
a first retainer plate rotatable relative to the driven member coaxially with the rotational axis;
an intermediate member rotatable relative to the first retainer plate and the driven member about the rotational axis; and

a plurality of damper elastic members interposed in series relative to each other between the first retainer plate and the driven member, the damper elastic members interposed between the first retainer plate and the intermediate member and between the intermediate member and the driven member, the damper elastic members elastically coupling the first retainer plate to the driven member;
the dynamic absorber including
an annular inertial member coaxial with the rotational axis;
a first connecting plate non-moveably mounted to the intermediate member of the torsional vibration damper; and
a plurality of circumferentially acting absorber elastic members interposed between the first connecting plate and the inertial member, the absorber elastic members elastically coupling the first connecting plate to the inertial member;

the dynamic absorber mounted to the torsional vibration damper coaxially with the rotational axis and rotationally guided and centered relative to the rotational axis by one of the first retainer plate and the driven member of the torsional vibration damper;
the dynamic absorber being rotatable relative to the first retainer plate;
the first connecting plate of the dynamic absorber being rotationally guided and centered relative to the rotational axis by directly rotationally slidingly engaging the first retainer plate or the driven member of the torsional vibration damper;
the inertial member rotatable relative to the first connecting plate coaxially with the rotational axis.

2. The torsional vibration damper assembly as defined in claim 1 , further comprising a second retainer plate non-moveably secured to the first retainer plate coaxially with the rotational axis, wherein the first retainer plate and the second retainer plate are mounted adjacent to axially opposite surfaces of the driven member, and wherein the second retainer plate is operatively connected to the damper elastic members so that the second retainer plate is elastically coupled to the driven member.

3. The torsional vibration damper assembly as defined in claim 1 , wherein the first connecting plate is non-moveably attached to the intermediate member, and wherein the dynamic absorber is guided and centered coaxially with the rotational axis by the first retainer plate of the torsional vibration damper rotationally slidingly engaging the first connecting plate of the dynamic absorber.

4. The torsional vibration damper assembly as defined in claim 3 , wherein the first retainer plate of the torsional vibration damper has at least one circumferentially extending guiding flange, the at least one guiding flange axially extends toward the first connecting plate of the dynamic absorber.

5. The torsional vibration damper assembly as defined in claim 4 , wherein the first connecting plate of the dynamic absorber has at least one radially extending mounting portion non-moveably attached to the intermediate member and at least one guided portion extending both circumferentially and axially from the at least one mounting portion; wherein the at least one guided portion rotationally slidingly engages the at least one guiding flange of the first retainer plate; and wherein the at least one guided portion is formed integral with the at least one mounting portion.

6. The torsional vibration damper assembly as defined in claim 4 , wherein the first connecting plate of the dynamic absorber has a plurality of radially extending mounting portions non-moveably attached to the intermediate member and a single, substantially annular guided portion rotationally slidingly engages the at least one guiding flange of the first retainer plate; and wherein the annular guided portion of the first connecting plate of the dynamic absorber is formed integral with the plurality of the mounting portions.

7. The torsional vibration damper assembly as defined in claim 1 , wherein the driven member has a guiding flange extending both circumferentially and axially, and wherein the first connecting plate of the dynamic absorber has at least one radially extending mounting portion non-moveably attached to the intermediate member of the torsional vibration damper and at least one circumferentially extending guided portion rotationally slidingly engaging the guiding flange of the driven member.

8. The torsional vibration damper assembly as defined in claim 1 , wherein the inertial member is rotationally guided and centered relative to the rotational axis by a substantially annular support surface of the first connecting plate.

9. The torsional vibration damper assembly as defined in claim 1 , wherein the dynamic absorber further includes a second connecting plate non-rotatably attached to the first connecting plate so that the inertial member and the absorber elastic members are interposed axially between the first and second connecting plates.

10. The torsional vibration damper assembly as defined in claim 9 , wherein the inertial member is rotationally guided and centered relative to the rotational axis by a substantially annular support surface of at least one of the first and second connecting plates.

11. The torsional vibration damper assembly as defined in claim 9 , wherein the inertial member is rotationally guided and centered relative to the rotational axis by substantially annular support surfaces of the first and second connecting plates.

12. The torsional vibration damper assembly as defined in claim 9 , wherein the inertial member is rotationally guided and centered relative to the rotational axis by substantially annular support surface of the second connecting plate only.

13. The torsional vibration damper assembly as defined in claim 1 , wherein the inertial member includes a support portion elastically coupled to the first connecting plate and an inertial portion formed integrally with the support portion; and wherein the inertial portion of the inertial member has a thickness and a mass substantially bigger than a thickness and a mass of the support portion thereof.

14. The torsional vibration damper assembly as defined in claim 13 , wherein the support portion extends substantially radially and the inertial portion extends substantially axially outwardly from the support portion so that the inertial member has an L-shape.

15. The torsional vibration damper assembly as defined in claim 9 , wherein the dynamic absorber further includes an anti-friction washer disposed axially between the inertial member and at least one of the first connecting plate and the second connecting plate of the dynamic absorber.

16. A hydrokinetic torque coupling device for coupling together a driving shaft and a driven shaft, the torque coupling device comprising:
an impeller coaxial aligned with a rotational axis and comprising an impeller shell;
a casing comprising the impeller shell and a casing shell interconnected to and non-rotatable relative to the impeller shell;
a turbine coaxially aligned with and drivable by the impeller, the turbine comprising a turbine shell;
a stator situated between the impeller and the t

Assignees

• Valeo Embrayages

Inventors

• Depraete Alexandre

Classifications

• F16H2045/0263

  the damper comprising a pendulum · CPC title

• F16H2045/0221

  with damping means · CPC title

• F16F15/145

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

• F16F15/1428 Primary

  with a single mass · 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