Patent ID: 8641537

Claim:
A damper mechanism, comprising: a first rotor including a first support part, a second support part, and a stopper part disposed between the first support part and the second support part in a rotational direction; a second rotor including a transmission part disposed between the first support part and the second support part in the rotational direction, the second rotor rotatably disposed with respect to the first rotor; first and second spring seats; a first elastic member disposed between the first support part and the transmission part in a preliminarily compressed state, the first elastic member being arranged to be in contact with the first spring seat, the first elastic member being arranged to be compressed when the first rotor is relatively rotated with the second rotor in a first direction; and a second elastic member disposed between the second support part and the transmission part in a preliminarily compressed state, the second elastic member being arranged to be in contact with the second spring seat, the second elastic member being arranged to be compressed when the first rotor is relatively rotated with the second rotor in a second direction being opposite to the first direction, the stopper part being disposed to make contact with the first elastic member and the second elastic member in the rotational direction, the stopper part being fixed to the first rotor and non-rotatable with respect to the first rotor, a first gap being produced between the stopper part and one of the first spring seat and the second spring seat in a neutral state at which no external force is applied to the first rotor and the second rotor.