US 5,246,398 AGranted

Clutch disk with torsional damper device

AssigneeLuk Lamellen und Kupplungsbau GmbH

InventorsAlbert Birk, Michael Bosse

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Abstract

A clutch plate for use in friction clutches has an output component in the form of a hub which is connectable to the input shaft of a variable-speed transmission, and an input component in the form of two spaced-apart disc-shaped walls which receive torque from a flywheel when the clutch is engaged. Two dampers are installed between the input and output components, and two diaphragm springs are provided to maintain the members of one damper and the elements of the other damper in proper axial positions relative to each other and relative to the components of the clutch plate. Plastic inserts are used to reduce wear upon metallic parts. One of the dampers is operative alone during a first stage of angular movement of the input and output components relative to each other, and the other damper is operative alone during the next-following stage of such angular movement. Relatively weak energy storing springs operate between the input and output members of the one damper, and stronger or stiffer energy storing springs operate between the input and output elements of the other damper.

Claims29

Dependent claims

Apparatus for damping torsional vibrations in the power train of a motor vehicle, particularly a clutch plate, comprising a rotary input component having two axially spaced apart walls;

a rotary output component including a hub having a toothed external profile;
a first damper operating between said components and including an input member, an output member, and first energy storing means having a first stiffness and disposed between said input and output members, said output member being non-rotatably secured to said hub;
a second damper operating between said components and including an input element, a substantially flange-like output element having a toothed internal profile in mesh with said external profile and permitting limited angular movements of said output element and said hub relative to each other, and second energy storing means having a greater second stiffness and operating between said input and output elements, said output element being disposed between said walls and said first damper being disposed at one side of said output element;
two axially stressed diaphragm springs between the other side of said output element and one of said walls;
means for non-rotatably coupling said diaphragm springs to said one wall;
and a friction generating ring directly engaged by one of said diaphragm springs and bearing against one of said components in the axial direction of said components.

3 more elements

Dependencies are inferred from the claim text.