| 摘要 |
PURPOSE:To prevent damage of parts due to centrifugal force applied to the parts in the side of an output shaft at a start of ultra high speed, by housing a selective transmission mechanism in a hollow rotary body integrally formed with a gear meshed to a gear mounted to the driving shaft of a motor. CONSTITUTION:A parallel spline 6 in the point end of a motor shaft 7 in a motor unit 1 is fitted to an outer part 10 of a one-way clutch 9, and a parallel spline 12 of the clutch 9 is fitted to a major gear 14. A minor gear 22 engaged to the gear 14 is integrally formed to the periphery of a gear tube 17. The tube 17 is screwed to a press-in shaft 18 by a helical spline 25, and the shaft 18 is fitted to an engaging member 19 by a helical spline 26. The member 19 is engaged to an engine shaft 41 by a press-in spring 21. In this way, the engaging device to an engine can be housed in the tube 17. |
