| 摘要 |
A speed-varying device (10A) that can give a high gear ratio with a small number of stages and that can be reduced in weight is provided. The speed-varying device (10A) is configured by combining parallel gears, and an input gear (11) provided on an input shaft (Si) and an output gears (12A, 12B) provided on an output shaft (So) are coupled to each other via a plurality of pinion shafts (Sv) that are arranged in the circumferential direction. The pinion shafts (Sv) are each provided with gears (13, 14A to 14B) having teeth different in number at both ends thereof. The gears (14A to 14D) disposed on the output shaft (So) side of the plurality of pinion shafts (Sv) are engaged with the plurality of output gears (12A, 12B) alternately in the circumferential direction. The output gears being arranged so as to be shifted from one another in the axial direction of the output shaft (So). |
