| 摘要 |
PROBLEM TO BE SOLVED: To provide a torsional vibration reduction device which is excellent in wear resistance or durability, and can suppress the generation of noise caused by a collision of a rolling body and a rolling chamber.SOLUTION: A torsional vibration reduction device comprises a plurality of rolling chambers 2 which are formed in a circumferential direction of a rotating body 1 at an external peripheral part of the rotating body 1 with preset intervals, rolling bodies 4 which are accommodated in the rolling chambers 2, respectively, and reciprocate in the rolling chambers 2 according to the torsional vibration of the rotating body 1, and a cover 6 which covers the rolling chambers 2 and the rolling bodies 4. Protrusions 11a, 11b for defining regions in which the rolling chambers 2 and the rolling bodies 4 are arranged are formed at a face at a rotating body 1 side in the cover 6, and at a portion corresponding to a clearance between the adjacent rolling chambers 2, and buffer parts 12 for performing buffering by making the rolling bodies 4 abut on end part sides of the rolling chambers 2 when the rolling bodies move to the end part sides of the rolling chambers are formed at the protrusions 11a, 11b. |
