VIBRATION DAMPING MECHANISM

摘要

Provided is a vibration damping mechanism that allows increase of an absorption amount of vibration energy, with less possibilities of increase in the manufacture cost of a vibration damping weight and of reduction in the strength of a shaft section. Within a cylindrical hollow portion 6 formed inside the shaft section 1, there are accommodated a plurality of weight members 14 divided from each other along the circumferential direction about the axis of the hollow portion. An urging member 16 is provided for urging the weight members toward the axis such that dividing faces 15 of adjacent weight members are brought into surface contact with each other.