Abstract: A clutch disk assembly has an input rotary member 2, a spline hub 3, a damper section 4, a friction mechanism 13, and a friction suppressing mechanism. The damper section 4 has second springs 8 and a torsion characteristic having a positive side corresponding to when the input rotary member 2 is twisted in a rotational drive direction with respect to the spline hub 3 and a negative side corresponding to when the input rotary member 2 is twisted in an opposite direction. The friction mechanism 13 can generate friction when the input rotary member 2 and the spline hub 3 undergo relative rotation and the second springs 8 exert an elastic force. The friction suppressing mechanism secures a rotational gap &thgr;ACn on only the positive or negative side preventing the second spring 8 from acting on the friction mechanism within a prescribed angular range.