Damper device and method of assembling same

A method of assembling a damper device, the damper device including

• a first rotor including a first support portion and a second support portion,
• a second rotor rotatable relative to the first rotor, the second rotor including a first accommodation portion and a second accommodation portion, the first accommodation portion provided to be offset from the first support portion to a first side in a rotational direction, the second accommodation portion provided to be offset from the second support portion to a second side in the rotational direction,
• a first elastic member disposed in a preliminarily compressed state in both the first support portion and the first accommodation portion,
• a second elastic member disposed in a preliminarily compressed state in both the second support portion and the second accommodation portion, and
• a pair of seat members supporting both end surfaces of the first elastic member, each of the pair of seat members including an assembling hole, the assembling holes of the pair of seat members allowing a first fixture for controlling actuation of the first elastic member to be attached thereto in a detachable manner when the first and second elastic members are assembled to the damper device,
• wherein each of the assembling holes of the pair of seat members extends parallel to a rotational axis of the damper device such that the first fixture can be inserted from an axial side of the damper, the method comprising:
• overlapping the first support portion of the first rotor and the first accommodation portion of the second rotor so as to eliminate an offset caused therebetween as seen in an axial direction;
• disposing the first elastic member in both the first support portion and the first accommodation portion overlapped with each other;
• overlapping the second support portion of the first rotor and the second accommodation portion of the second rotor so as to eliminate an offset caused therebetween as seen in the axial direction by simultaneously compressing the first elastic member and rotating the second rotor relative to the first rotor to the first side in the rotational direction;
• disposing the second elastic member in both the second support portion and the second accommodation portion overlapped with each other;
• and
• simultaneously compressing the second elastic member and rotating the second rotor relative to the first rotor to the second side in the rotational direction by an angle corresponding to the offset caused between the first support portion and the first accommodation portion.