| 摘要 |
PROBLEM TO BE SOLVED: To provide a clutch disc which has twisting characteristics that are smoothly shifted from their low stiffness stage to their high stiffness stage, and can sufficiently reduce vibration and noises taking place in their power transmission system. SOLUTION: A driving plate 11 at the input side is elastically linked with a hub 1 to be linked with the output side 5 by means of a compression spring 14 in such a way that relative rotation can thereby be made. It is so constituted that the hub 1 is linked with the drive plate 11 by way of an inner hub 2 to be linked with the output shaft 5 and the compression spring 14, and is formed out of an outer hub 3 capable of being relatively rotated by a specified angle with respect to the inner hub 2, and of a curved spring member 4 linking the inner hub 2 with the outer hub 3 in such a way that they can be elastically and relatively rotated. Both the ends of the curved spring member 4 are inserted into engaging holes formed up for the inner hub 2 and the outer hub 3 respectively. An elastic member 10 is provided between the end part of the curved spring member 4 and each engaging hole.
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