Clutch disc
AssigneeFichtel & Sachs AG
InventorsMatthias Fischer, Harald Jeppe, Gerda Rudolph
Life of this patent
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Abstract
A clutch disc with torsional vibration damper is proposed in which synthetic plastics material guide parts are arranged between a hub disc protruding from a hub and two side discs arranged axially on both sides of the hub disc, which guide parts, stressed axially by a spring, fix the side discs axially on the hub disc and guide them radially on the hub, by means of formed-on collars. The guide parts are coupled rotationally elastically through springs of an idling damper with the hub disc and at the same time determine the friction moment in idling.
Claims18
A clutch disc for a motor vehicle friction clutch, comprising:
- a hub element which is concentric with a rotational axis and having a disc element wherein said disc element is fixedly connected to said hub element and further wherein said disc element projects radially from said hub element;
- a plurality of side disc elements including at least a first side disc element and a second side disc element wherein one of said side disc elements forms a friction lining carrier and wherein said side disc elements are fixedly connected with each other and wherein said side disc elements are rotatable about said rotational axis relative to said disc element;
- a plurality of first damping springs which are dimensioned for operation under load wherein said first damping springs are retained in windows located in an outer portion of said disc element and between said side disc elements wherein said first damping springs couple said disc elements in a torsionally elastic manner with an outer portion of said disc element;
- a plurality of guidance elements including at least a first guidance element and a second guidance element wherein said guidance elements are arranged at opposite sides of said disc element and between said side disc elements wherein said guidance elements are rotatable relative to said hub element;
- and further wherein said guidance elements are annularly-shaped and constructed of a plastic material molded part and further wherein said guidance elements rest axially at an inner portion of said disc element;
- a plurality of second damping springs arranged in windows of said inner portion of said disc element and in recesses of said guidance elements wherein said second damping springs are dimensioned for operation in an idling range, and further wherein said second damping springs couple said inner portion of said disc element in a torsionally elastic manner with said guidance elements;
- a first friction means which is dimensioned for an under load operation and which is located between at least one of said side disc elements and said disc element;
- a second friction means which is dimensioned for an idling operation wherein said second friction means utilizes side faces of said guidance elements in contact with said disc element;
- and
- an axially acting spring which is arranged between a first guidance element and a first side disc element adjoining said first guidance element, wherein said axially acting spring serves to preload a second side disc element, which is fixedly connected to said first side disc element, against a second guidance element and further wherein said axially acting spring serves to preload said first and said second guidance elements against said inner portion of said disc element for fixing said first and second side disc elements to said hub element.
Dependencies are inferred from the claim text.