| 摘要 |
<p>A gear device that can reduce vibration and noise is provided. The gear device includes a first gear (11) provided at a first shaft, a second gear (21) provided at a second shaft to mesh with the first gear (11), and a third gear (31) provided at a third shaft to mesh with the second gear (21). The second gear (21) includes a through hole (24) extending along a circumferential direction about the rotation axis, formed such that the rigidity in the circumferential direction is varied. The first gear (11) and the third gear (31) are arranged such that the rigidity of the second gear (21) at a meshing point (41) between the first gear (11) and the second gear (21) differs from the rigidity of the second gear (21) at a meshing point (42) between the second gear (21) and the third gear (31), at a certain point of time.</p> |
