| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration reduction device capable of reducing man-hours of assembly by decreasing the number of components of a member which prevents rolling bodies provided in a plurality of through holes respectively from coming out in axial directions. ! SOLUTION: In a vibration reduction device 1 such that a plurality of through holes 3 having a predetermined length in a circumferential direction are formed mutually at predetermined intervals in a holding member 2 which rotates integrally with a rotary member whose torsional vibration should be reduced and rolling bodies 4 are provided in the through holes 3 respectively so as to swing along inner wall surfaces 5 of the through holes 3 as the torque of the rotary member varies, the rolling bodies 4 have engagement parts 8 formed to project toward outer peripheral sides of the rolling bodies 4 or to be hollowed, and a position restriction member 9 which allows the engagement parts 8 to move relatively in circumferential directions an |
