| 摘要 |
Coil spring assemblies 9 are provided for a damper mechanism of a clutch disk assembly 1 that has an increased life span. The clutch disk assembly 1 includes an input rotary member 2, an output rotary member 3 and an elastic coupling portion 4. The elastic coupling portion 4 includes a plurality of the coil spring assemblies 9. The input rotary member 2 basically includes a clutch disk 11, a clutch plate 12 and a retaining plate 13. The output rotary member 3 basically includes a hub flange 6, a hub 7 and a low-rigidity damper 8. The coil spring assemblies 9 are configured to elastically couple plates 12 and 13 to the hub flange 6 in the rotating direction. Each coil spring assembly 9 includes a coil spring 41 and a pair of spring seats 42 and 43. The spring seats 42 and 43 are engaged with the wire end surfaces of the coil spring 41, respectively, such that the coil spring 41 cannot rotate around its central axis P-P. The coil spring assembly 9 is engaged with the plates 12 and 13 and the hub flange 6 such that the coil spring assembly 9 cannot rotate around the central axis P-P of the coil spring 41.
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