Patent ID: 6857514

Claim:
A damper mechanism comprising: a first rotary member, said first rotary member having a plurality of internal teeth; a second rotary member being configured to rotate relative to said first rotary member, said second rotary members having a plurality of external teeth, said plurality of external teeth being arranged to have a rotational gap with respect to said plurality of internal teeth; a damper section being configured to couple elastically said first rotary member and said second rotary member together in a rotational direction; a friction mechanism being configured to generate friction when said first rotary member and said second rotary member rotate relative to each other; a friction suppressing mechanism being configured to prevent said friction mechanism from operating within a prescribed angular range, said prescribed angular range having a positive rotational side and a negative rotational side corresponding to said first rotary member being respectively rotated relative to said second rotary member in a first rotational direction and second rotational direction opposite said first rotational direction; and an elastic member being configured to soften the impact between members that contact each other at an end of said prescribed angular range only on one of said positive rotational side or said negative rotational side, said elastic member being disposed rotationally between said internal teeth and said external teeth.