| 摘要 |
<p>A gear device (1) is provided with an outer cylinder (2), a crank shaft (20), a carrier for rotatably supporting the crank shaft (20), and a spur gear (18) joined to the crank shaft (20) by a spline. The spline (40) has a male spline part (41) formed on the crank shaft (20) and a female spline part (42) formed on the inner peripheral surface of an opening (18a) formed on the spur gear (18). The male spline part (41) has an inclined surface (41b) formed between adjacent teeth (41a) at the distal end of the male spline part (41) and inclined further outwards, in the radial direction of the crank shaft (20), with increasing distance towards the distal end of the male spline part (41). The spur gear (18) is constrained, in a state in which the convex part is pressed against the inclined surface (41b), by the crank shaft (20).</p> |
