| 摘要 |
Each damper mechanism (4,5) in a clutch disc assembly (1) has springs (7,8) compressed in the circumference direction when both input rotary body (2) and output rotary body (3) rotate. A friction suppression mechanism does not operate the friction mechanism (13) in the damper mechanism (5) when the second twist character step area against a twist vibration is below a predetermined torque. The clutch disc assembly consists of the input rotary body, output rotary body, damper mechanisms, friction mechanism and friction suppression mechanism. Each damper mechanism has a second twist characteristic step area which has a higher rigidity compared to the first twist characteristic step area. The friction mechanism generates a friction drag in the second twist characteristic step area. The maximum twist angle of the input and output rotary bodies is set to 20 degrees or more.
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