| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a gear device which is configured so that an external tooth supporting mechanism can further smoothly support an external gear.SOLUTION: A gear device 1 includes an internal gear 70 having a plurality of internal teeth 73, a rotating shaft 20 having an eccentric cam 22, and an external gear 30 on and in the outer periphery side of which a plurality of external teeth 32 are formed to engage with the internal teeth 73 and a plurality of through-holes 33 are formed to isolate each other in a peripheral direction ZC, respectively, and which is rockingly rotated around a center axis J1 of the rotating shaft 20 with the rotation of the rotating shaft 20 by the eccentric cam 22. The gear device 1 further includes first needle bearings 41, second needle bearings 42 and eccentric bushes 44 as external tooth supporting mechanisms inserted into the through-holes 33 for supporting the external gear 30 during the rocking rotation of the external gear 30. Between the adjacent through-holes 33 in the peripheral direction ZC, the external gear 30 has first lubricating oil reservoir parts 36 and second lubricating oil reservoir parts 37 which are connected to the through-holes 33 and in which lubricating oil LB is filled.</p> |
