| 摘要 |
The present invention is a wobbling inner gearing planetary gear system having planetary external gears, and a center axis being located inside a periphery of the planetary external gears. The external gears can be provided in a number of 2n where n is an integer of 2 or more. The 2n external gears can be arranged in an circumferential direction of the center axis with a phase difference of 360�/2n. The external gears form parallels, and two external gears of each pair are offset from each other by a 180� phase difference. The two external gears can be arranged adjacent to each other in an axial direction of the center axis. |
