| 摘要 |
Provided is a dynamic vibration absorber that can properly damp fluctuations in torque across a wide range of rotational speeds. A dynamic vibration absorber (8) has: a second drive plate (51), an inertia ring (53), a coupling gear unit (55), a second torsion spring (57), and a second driven plate (59). The second drive plate (51) can be rotated by torque input. The inertia ring (53) is movable relative to the second drive plate (51). The coupling gear unit (55) couples the second drive plate (51) and the inertia ring (53) so as to be movable relative to one another. The coupling gear unit (55) is rotatable between the second drive plate (51) and the inertia ring (53). The second torsion spring (57) elastically couples the second drive plate (51) and the inertia ring (53). The second driven plate (59) rotatably supports the coupling gear unit (55). |
