| 摘要 |
PURPOSE:To improve the degree of roundness and prevent the interference of speed change gears with circular-clip and the step difference of a speed change shaft by rotatably supporting the speed change gears onto collars. CONSTITUTION:A speed change gear 6 is rotatably installed onto a speed change shaft consisting of a main shaft 1 and a subshaft 2 arranged in parallel, through collars 7 and 7. Collars 11 and 11 are press-fitted and fixed onto the speed change shaft, and speed change gears 8, 12, and 13 are rotatably supported onto the collars 11 and 11. With such constitution, the degree of roundness of collars 11 and 11 can be improved by the tension in the circumferential direction due to the press-fitting into the speed change shaft. Since the speed change gears 8, 12, and 13 and the collars 11 and 11 are in free fitted state, the interference of the speed change gears 8, 12, and 13 with a positioning circular-clip 16 and the step difference of the shaft can be prevented. |
