| 摘要 |
PROBLEM TO BE SOLVED: To provide a dynamic damper capable of simultaneously obtaining the necessary and enough vibration reducing effect in both torsional and bending directions without being restrained by a characteristic value by which the dynamic damper effect can be obtained even when a mass member is only one. SOLUTION: In a structure where a solid cylindrical weight 4 as a mass member is provided in the inner periphery of a propeller shaft 1 concentrically with the shaft 1 through rubber system elastic bodies 2, 3, the projected amounts l1 and l2 of the weight 4 from the rubber system elastic bodies 2, 3 are allowed to be different from each other on both end of the weight 4, and an elastic center P2 of the rubber system elastic bodies 2, 3 is axially offset with an amount (e) of offset with respect to the center of gravity of the weight 4. |
