| 摘要 |
PROBLEM TO BE SOLVED: To provide a dynamic damper that prevents or controls collision between a rolling element and a rolling chamber which houses the element, when the number of revolutions of a rotating member is low to some degree.SOLUTION: The dynamic damper 1 includes the rolling element 8 which relatively rotates with rotational fluctuation of the rotating member 2 which rotates. The damper further includes a release mechanism for fixing the rolling element 8 to the rotating member 2 when the rotating member 2 rotates relatively at a low number of revolutions and for releasing the fixing of the rolling element 8 to the rotating member 2 when the rotating member 2 rotates at more than the low number of revolutions. |
