| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a torsional vibration attenuation device which can fix an inertial mass body, and can release the fixation without particularly increasing the number of part items.SOLUTION: In a torsional vibration attenuation device in which a plurality of rolling bodies 3 which reciprocate in the rotation direction of a rotating body 1 by a variation of torque in a state that the rotating body 1 rotates are arranged at points displaced in the radial direction from the rotation center of the rotating body 1 which rotates by receiving the torque, the torsional vibration attenuation device comprises a lock member 5 which is formed in an annular shape as a whole, and has a receiving face 7 which contacts with an external peripheral side of a plurality of the rolling bodies 3, constrains a plurality of the rolling bodies 3 by elastic forces, and makes a plurality of the rolling bodies 3 reciprocal by releasing the constraint when centrifugal forces generated at a plurality of the rolling bodies 3 become larger than the elastic forces, and a pair of bent parts 6f, 6i which are arranged at both sides of the receiving face 7, and generate the elastic forces.</p> |
