Torsional vibration damper

Patent metadata

Field	Value
Publication number	US-10100898-B2
Application number	US-201314439194-A
Country	US
Kind code	B2
Filing date	Sep 30, 2013
Priority date	Oct 29, 2012
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A torsional vibration damper has a damper mass carrier at which is received at least one damper mass movable relative to the damper mass carrier and with at least one stop. The at least one damper mass has a stop side with a geometric shaping. At least one stop is associated with the damper mass, and has an axial overlap with the at least one damper mass in extension direction of a central axis and a stop profile at its side facing the stop side of the damper mass. At least one stop receiver is associated with the least one stop for the at least one damper mass. The geometric shaping which is provided at the at least one damper mass has a first contact region operative at least substantially in radial direction and a second contact region operative at least substantially in tangential direction. The first contact region can be brought into operative connection with the stop, and the second contact region can be brought into operative connection with the stop receiver.

First claim

The invention claimed is:

1. A torsional vibration damper comprising:
a hydrodynamic coupling arrangement housing;
at least one damper mass having a stop side with a geometric shaping arranged in the hydrodynamic coupling arrangement housing;
at least one stop associated with the at least one damper mass having a stop profile at its side facing a stop side of the at least one damper mass; and
a damper mass carrier with the at least one stop, the damper mass carrier having a damper mass support element at which the at least one damper mass is arranged and the at least one damper mass is configured to be movable relative to the damper mass carrier,
two circumferential spring sets between which the damper mass support element is arranged;
wherein the at least one stop has at least a partial axial overlap with the at least one damper mass in an extension direction of a central axis,
wherein at least one stop receiver is associated with the at least one stop for the at least one damper mass,
wherein the geometric shaping has at least one first contact region operative at least substantially in radial direction and at least one second contact region operative at least substantially in tangential direction, the first contact region configured to be brought into operative connection with the stop, and the second contact region configured to be brought into operative connection with the stop receiver,
wherein the two circumferential spring sets are connected in series, each of the circumferential spring sets having a plurality of circumferential spring set parts that operate in parallel to one another; and
wherein the geometric shaping is formed with two second contact regions configured for mutually opposite working directions of the at least one damper mass, each of the second contact regions is configured with respect to its shape to a shape of the at least one stop receiver.

2. The torsional vibration damper according to claim 1 , wherein the first contact region is provided between two second contact regions that adjoin at circumferential end sides.

3. The torsional vibration damper according to claim 1 , wherein the first contact region is formed of two parts configured for opposite work directions of the at least one damper mass, wherein each of the two parts is configured with respect to its shape to a shape of the at least one stop profile stop of the at least one stop.

4. The torsional vibration damper according to claim 3 , wherein each part of the first contact region has, at its side facing the stop profile of the stop, a curvature shape configured to a curvature shape of the stop profile of the stop.

5. The torsional vibration damper according to claim 1 , wherein each second contact region has, at its side facing the at least one stop receiver, a curvature shape which is adapted to a curvature shape of the at least one stop receiver.

6. The torsional vibration damper according to claim 1 , further comprising a plurality of stops for a plurality of damper masses, the stops are received in circumferential direction on a common, substantially annular component part.

7. The torsional vibration damper according to claim 1 , wherein the at least one stop and the at least one stop receiver extend at least partially radially inwardly of the at least one damper mass.

8. The torsional vibration damper according to claim 7 , wherein the stop in association with the respective stop receiver is provided with at least one holder that encloses the stop receiver.

9. The torsional vibration damper according to claim 8 , wherein the at least one holder is configured to form a free space with an axial offset relative to a respective stop receiver.

10. The torsional vibration damper according to claim 1 , wherein the at least one stop receiver is formed by at least one holding projection fixedly held through a component part, after one of:
engaging through an associated recess and
through engagement in an associated recess of the component part of a coupling arrangement.

11. The torsional vibration damper according to claim 10 , wherein the stop is supported by its radially inner side at the component part of the coupling arrangement.

12. The torsional vibration damper according to claim 1 , wherein the at least one stop for the damper mass is displaceable in circumferential direction relative to the damper mass.

13. The torsional vibration damper according to claim 12 , wherein the at least one stop receiver is associated with the at least one stop for the damper mass, the at least one stop receiver being configured to center the stop relative to the central axis.

14. The torsional vibration damper according to claim 13 , further comprising a sheath associated with the at least one stop receiver.

15. The torsional vibration damper according to claim 1 ,
wherein the damper mass carrier has two first guideways that cooperate with two second guideways of the at least one damper mass,
wherein rolling bodies for receiving the respective damper mass at the at least one damper mass carrier configured to allow relative movement thereof connect the first guideways and the second guideways to one another,
wherein in at least one of the second guideways have a radially outer region having one of a planar shape and a widening so that a radial extension of the respective second guideway has a maximum in a circumferential region of the respective initial region and the first guideways have in the radially inner region one of a planar shape and a widening so that the radial extension of the respective guideway has a maximum in the circumferential region of the respective initial region.

16. The torsional vibration damper according to claim 1 , wherein the at least one stop for the at least one damper mass is one of secured to or centered at one of the damper mass carrier, a component part of a damping device of a coupling arrangement, and a component part of the coupling arrangement.

17. The torsional vibration damper according to claim 1 further comprising:
a coupling arrangement, having a torsional vibration damper unit comprising a damping device with the two circumferential spring sets, a torsion damper input, and a torsion damper output,
wherein one of the torsion damper input, the torsion damper output, and an intermediate torsion damper component located between the torsion damper input and the torsion damper output is configured to receive the damper mass support element of the damper mass carrier to be fixed with respect to relative rotation.

18. The torsional vibration damper according to claim 17 , wherein the torsional vibration damper unit is coupled to a clutch mechanism.

19. The torsional vibration damper according to claim 1 , wherein the hydrodynamic coupling arrangement comprises:
a hydrodynamic circuit with an impeller, a turbine, and a stator; and
a clutch mechanism having a clutch piston and a friction disk clutch,
wherein based at least in part on an actuation of the clutch piston, the clutch mechanism is movable between an engaged position and a disengaged position,
wherein the clutch mechanism is coupled to a torsion damper input.

Assignees

• Kram Matthias
• Stampf Volker
• Sudau Joerg
• Sasse Christoph
• Stuermer Armin
• Wirachowski Michael
• Dong Ying
• Kokott Friedrich
• Pittner Daniel
• Andres Oliver
• Vierneusel Simone
• Egler Dennis
• Zahnradfabrik Friedrichshafen

Inventors

• Kram Matthias
• Stampf Volker
• Sudau Jörg
• Sasse Christoph
• Stürmer Armin
• Wirachowski Michael
• Dong Ying
• Kokott Friedrich
• Pittner Daniel
• Andres Oliver
• Vierneusel Simone
• Egler Dennis

Classifications

• F16F15/145 Primary

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

• Y10T74/2128

  Damping using swinging masses, e.g., pendulum type, etc. · CPC title