| 摘要 |
<p>Disclosed is a torsional vibration attenuation apparatus capable of enlarging a torsional angle between an intermediate rotation member and a driven rotation member to provide a large resilient deformation to a third resilient member, thereby making it possible to prevent an attenuation property from being lowered when a driven rotation member is returned to a neutral position from the state in which the driven rotation member is twisted in a negative side with respect to a drive rotation member. Provided on a disc plate 12 is a return spring 36 held in engagement with a sub-plate 16 and deformable between the sub-plate 16 and the disc plate 12 when the hub plate 11 is twisted in the negative side with respect to the disc plates 12, 13, so that the sub-plate 16 is urged in the direction in which the gap between the positive side end portion 24a of a spring accommodation window 24 and a bent portion 27A is increased.</p> |
