US 5,766,109 AGranted

Torsional vibration damper with a planetary gearset

AssigneeFichtel & Sachs AG

InventorJorg Sudau

Life of this patent

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Abstract

A torsional vibration damper is designed with a driving-side transmission element, with at least one planet carrier which can rotate relative to the transmission element and which planet carrier is provided with at least one plane wheel which is engaged on one hand with a sun gear and on the other hand with a ring gear, and with a driven-side transmission element. One of the transmission elements has control means for a spring device. There are centrifugal masses corresponding respectively to the driving-side transmission element and to the driven-side transmission element, at least one of which centrifugal masses is connected by means of the spring device to at least one element of the planetary gearset which acts as an intermediate mass, whereby the intermediate mass can be driven in a movement which is a function of the speed and direction of rotation of the two centrifugal masses with respect to one another.

Claims20

Dependent claims

A clutch arrangement for a motor vehicle having a flywheel and a clutch, said clutch arrangement comprising:

a flywheel;
said flywheel comprising:
a first flywheel portion;
said first flywheel portion comprising a first centrifugal mass;
said first flywheel portion comprising a structure to be connected to one of:
a drive shaft of a motor vehicle and a motor vehicle clutch;
a second flywheel portion;
said second flywheel portion comprising a second centrifugal mass;
said second flywheel portion comprising a structure to be connected to the other of:
a drive shaft of a motor vehicle and a motor vehicle clutch;
a torsional vibration damper;
said torsional vibration damper being disposed to dampen vibrations between said first flywheel portion and said second flywheel portion;
said torsional vibration damper comprising a gear system to transmit torque between said first flywheel portion and said second flywheel portion;
said gear system comprising:
at least one gear wheel having a first axis of rotation;
said at least one gear wheel having a first plurality of teeth;
a ring gear being disposed to mesh with said at least one gear wheel;
said ring gear having a second axis of rotation;
said ring gear having a second plurality of teeth;
said ring gear being operatively connected to said first flywheel portion to rotate with said first flywheel portion;
said at least one gear wheel being operatively connected to said second flywheel portion to revolve about said second axis of rotation;
said first plurality of teeth being greater in number than said second plurality of teeth;
said first axis of rotation being disposed a substantial distance from said second axis of rotation;
and
said first plurality of teeth being disposed to be in mesh with said second plurality of teeth.

22 more elements

A flywheel for a motor vehicle comprising:

a first flywheel portion;
said first flywheel portion comprising a first centrifugal mass;
said first flywheel portion comprising a structure to be connected to one of:
a drive shaft of a motor vehicle and a motor vehicle clutch;
a second flywheel portion;
said second flywheel portion comprising a second centrifugal mass;
said second flywheel portion comprising a structure to be connected to the other of:
a drive shaft of a motor vehicle and a motor vehicle clutch;
a torsional vibration damper;
said torsional vibration damper being disposed to dampen vibrations between said first flywheel portion and said second flywheel portion;
said torsional vibration damper comprising a gear system to transmit torque between said first flywheel portion and said second flywheel portion;
said gear system comprising:
at least one gear wheel having a first axis of rotation;
said at least one gear wheel having a first plurality of teeth;
a ring gear being disposed to mesh with said at least one gear wheel;
said ring gear having a second axis of rotation;
said ring gear having a second plurality of teeth;
said ring gear being operatively connected to said first flywheel portion to rotate with said first flywheel portion;
said at least one gear wheel being operatively connected to said second flywheel portion to revolve about said second axis of rotation;
said first plurality of teeth being greater in number than said second plurality of teeth;
said first axis of rotation being disposed a substantial distance from said second axis of rotation;
and
said at least one gear wheel being disposed to be in mesh with said ring gear.

20 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/866,538Filed 30 May 1997 · division
Priority: DE 43 43 802422 Dec 1993
Granted: 16 Jun 1998
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F16F 15/1343
Wound springs: characterised by the spring mounting
F16F 15/1206
With a kinematic mechanism or gear system: with a planetary gear system
F16F 15/13157
The rotating system comprising two or more gyratory masses: with a kinematic mechanism or gear system, e.g. planetary
F16F 15/1478
Masses connected to driveline by a kinematic mechanism or gear system: with a planetary gear system

Family

Serial358,697Parent of this division · filed 19 Dec 1994
Serial665,465Parent of this division · filed 18 Jun 1996
US 5,551,928 AParent of this division · filed 3 Sep 1996
US 5,634,866 AParent of this division
US 5,766,109 AThis patent

From the US filing history. Foreign family members aren’t listed.