| 摘要 |
PROBLEM TO BE SOLVED: To provide a improved structure capable of more stably and effectively bringing out an objective vibration damping effect for a damper, in which an annular independent mass member is outwardly inserted to a shaft member, the vibration damping effect is brought out by the impact of the independent mass member against the shaft member, and the independent mass member is arranged in a state of being directly exposed in outer space. SOLUTION: In confronting faces 44, 48 in a direction perpendicular to an axis or in the axial direction composing a bilateral impact face of the shaft member 12 and the independent mass member 14, a foreign matter discharging part 52 is provided to promote discharging a foreign matter invading between the confronting faces 44, 48 to the outside. COPYRIGHT: (C)2004,JPO
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