| 摘要 |
PROBLEM TO BE SOLVED: To maintain a constant angle at which the low hysteresis torque can be generated in a structure where no high hysteresis torque is generated against the small torsional vibration in the high twist angle range of the torsional characteristic. SOLUTION: In a clutch disk assembly, a first friction washer 48 is arranged between a retaining plate 32 and a hub flange 18, and engaged with the retaining plate 32 movably in the axial direction so that the torque is inputted from the retaining plate 32. A first cone spring 49 is arranged in the axial direction between the first friction washer 48 and the retaining plate 32 and gives the repulsive force to both members in the axial direction. A fixed plate 20 is arranged in the axial direction between the first friction washer 48 and the hub flange 18. The fixed plate 20 forms a second clearance mechanism 46 to ensure a specified clearance in the rotational direction between itself and the hub flange 18.
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