| 摘要 |
A damper disc comprising a flange connected to a torque output part; a pair of side plates connected to a torque input part; and spring mechanisms for soft and hard torsion operations for connecting the side plates to the flange; characterized in that; the spring mechanism for the soft torsion operation includes a pair of first springs, a second spring disposed circumferentially between the first springs in series and engagement parts disposed at both ends of the second spring and operable to engage with edges of the openings; one of the openings in the flange and each side plate is designed to support both ends of the spring mechanism for the soft torsion operation and to form circumferential first spaces with respect to the engagement part in a neutral position, other of the openings in the flange and each side plate is designed to support both ends of the spring mechanism for the soft torsion operation and to form circumferential second spaces longer than the first spaces with respect to the engagement parts in the neutral position.
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