| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a torsional vibration attenuation device which can prevent or suppress the generation of noise caused by a collision of a rolling body to a rolling face.SOLUTION: In the torsional vibration attenuation device in which a rolling body 2 having a support 2A and disc plates 2B disposed at both ends of the support is provided at an external periphery of a rotating body 1 so as to reciprocate in the rotation direction of the rotating body 1 by a variation of the torque of the rotating body 1, there is provided, at the inside of the rolling body 2 in the radial direction of the rotating body 1, a holder 7 for changing a distance between the disc plates 2B and itself by being rotated with respect to the rotating body 1 so as to be overlapped with the disc plates 2B in the axial direction of the rotating body 1, and at an external periphery of the holder 7, there is provided a narrowing part 11 for narrowing a movable range of the rolling body 2 in the radial direction of the rotating body 1 in the case that the rolling body 2 reciprocates by being arranged so as to oppose the disc plates 2B.</p> |
