| 摘要 |
PROBLEM TO BE SOLVED: To enhance a sound/vibration performance of a damper mechanism having a low hysteresis torque generation gap against a fine twisting vibration. SOLUTION: A clutch disc assembly is provided with an input rotation body 2; a spline hub 3; a damper part 4; a large friction mechanism 13; and a friction inhibition mechanism. The damper part 4 has a second spring 8 for connecting the input rotation body 2 and the spline hub 3 in a rotation direction and the input rotation body 2 has a twisting characteristic including a positive side twisted to a rotation direction driving side against the spline hub 3 and a negative side twisted to an opposite side to the rotation direction driving side. The large friction mechanism 13 can generate a friction when the input rotation body 2 and the spline hub 3 are relatively rotated and a resilient force of the second spring 8 is applied thereto. The friction inhibition mechanism ensures a gapθACn in the rotation direction for not applying the resilient force of the second spring 8 to the friction mechanism within a predetermined angle at only one side of the positive side and the negative side of the twisting characteristic.
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