| 摘要 |
PROBLEM TO BE SOLVED: To exhibit excellent damping effect by forming a deflected trajectory by a vertex region and deflected regions extending in the opposite directions from it in a device in which a deflected mass body and the deflected trajectory arranged by corresponding to the deflected mass body are arranged in a rotatable base substance. SOLUTION: A vibration damping device 30 is provided with a support region energized by a diaphragm spring between a plurality of deflecting mass bodies 50 dispersed in the peripheral direction and is provided with a primary flywheel mass body 42 connected with a crank shaft and a secondary flywheel mass body connected with a hubdisc. The spherical deflected mass body 50 is stored in a deflected trajectory 52 formed in a base substance 64 of the secondary flywheel mass body so as to roll freely. This deflected trajectory 52 has a vertex region 54 in a region on the outer side in the radial direction, deflected regions 56, 58 are extended in the opposite direction from the vertex region 54, and the deflected mass bodies 50 roll in these deflected regions 56, 58 to obtain damping effect.
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