| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve lubricating performance of a lubricant.SOLUTION: An eccentric oscillation type gear device 1 includes a crank shaft 10, a crank bearing 12 rotatably supporting the crank shaft 10, an oscillating gear 14, an outer cylinder 2 having an internal tooth pin 3 engaged with an external tooth 14a of the oscillating gear 14, a transmission gear 20 mounted on one end portion of the crank shaft 10, and a carrier 4 causing relative rotational speed difference to the outer cylinder 2 by oscillation of the oscillating gear 14. The carrier 4 is provided with a first through hole 23, a second through hole 24 formed on a position deviated from the first through hole 23 in the radial direction and provided with the crank bearing 12, and a communicating portion 25 for communicating the first through hole 23 and the second through hole 24. As a rotary barrel 52 is mounted on an axial end face of the carrier 4, an end portion of the first through hole 23 and an end portion of the second through hole 24 are closed.</p> |
