Torsional vibration damper
AssigneeFichtel & Sachs AG
InventorsMatthias Fischer, Rainer Ziss
Life of this patent
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Abstract
The torsional vibration damper suitable for the clutch disc of a motor vehicle friction clutch comprises an idling damper, the springs of which are retained in recesses of a toothing which couple the hub of the damper with a disc part, with limited play in rotation. The end faces of the spring lie for the one part on stop edges of the disc part and for the other part on stop edges of two retaining discs which annularly enclose the hub. The retaining discs are coupled non-rotatably, by axial bent-out portions, with a hub disc of the hub, and for assembly are pushed axially on to the hub. The retaining discs can be produced simply and fitted without problem. FIG. 1.
Claims11
A torsional vibration damper, especially for a clutch disc of a motor vehicle friction clutch, comprising:
- (a) a hub having a radially protruding first disc part comprising an external toothing
- (b) a second disc part of annular disc form rotatably enclosing the first disc part concentrically, which second disc part comprises an internal toothing engaging with predetermined play in rotation in the external toothing of the first disc part,
- (c) firmly mutually connected side discs arranged on axially opposite sides of the disc parts rotatably in relation to these,
- (d) at least one first spring stressable in the relative rotation of the side discs and of the second disc part,
- (e) at least one second spring stressable in the relative rotation of the first disc part and the second, which second spring is arranged in a first recess, defined in the circumferential direction by teeth, of one of the two disc parts, which recess extends substantially over the whole radial height of the second spring and forms first abutment edges, lying opposite to one another in the circumferential direction, for the abutment on the second spring,
- (f) a retaining device for the second spring, which comprises two separate retaining discs arranged on axially opposite sides of the two disc parts, each of said retaining discs comprises a second recess lying axially opposite to the first recess and forming second abutment edges lying opposite to one another in the circumferential direction for the abutment on the second spring engaging in the second recess, and each of said retaining discs is separately connected non-rotatably with the other of the two disc parts and is axially fixed between the first disc part and a different one of the side discs.
Dependencies are inferred from the claim text.