| 摘要 |
A lockup device 7 is provided with a clutch mechanism, an elastic coupling mechanism, a piston 75 , and a piston coupling mechanism 76 . The piston coupling mechanism 76 has a piston pilot 78 and a return plate 79 and serves to couple the piston 75 and a front cover 11 . The piston pilot 78 is fixed to the front cover 11 and supports the piston 75 . The axially deformable return plate 79 is disposed between the front cover 11 and the piston 75 . The elastic coupling mechanism is provided with a plurality of torsion springs 73 , a spring holder 71 , a driven plate 72 , and a drive plate 74 . A plurality of slit holes 71 d each having a width that is larger than the width W 1 of the first claw parts 72 b are formed in the annular part 71 a at positions corresponding to those of the first claw parts 72 b.
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