| 摘要 |
The lock-up device includes an input rotary member, an output rotary member, an elastic member and a support member. The elastic member elastically couples the input rotary member and the output rotary member in a rotational direction. The support member is rotatably disposed relatively to the input rotary member and the output rotary member. The support member has a support part supporting the elastic member and an engaging part engaged with the elastic member in the rotational direction. The support part of the support member herein has an outer peripheral side support portion supporting the outer peripheral side of the elastic member. Further, the outer peripheral end of the outer peripheral side support portion has a curvature continuously reduced in proportion to distance from the engaging part in the rotational direction.
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