| 摘要 |
A clutch disk assembly includes an input rotary member 2, an output rotary member 3, damper mechanisms 4 and 5, a friction mechanism 13 and a friction suppressing mechanism. Damper mechanisms 4 and 5 include a plurality of elastic members 7 and 8 which are arranged between the input and output rotary members 2 and 3 and are circumferentially compressed when the members 2 and 3 rotate relatively to each other. The damper mechanisms 4 and 5 exhibit torsion characteristics in a first region and a second region of relative rotary displacement where the dampening rigidity within the second region is greater than in the first region. The friction mechanism 13 is adapted to generate frictional resistance (hysteresis torque) in the second region of the relative rotary displacement within the clutch disk assembly. A friction suppressing mechanism stops operation of the friction mechanism 13 in response to vibrations having only a magnitude that creates relative rotary displacement within a limited predetermined angular displacement range within the larger second region.
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