| 摘要 |
PURPOSE:To accomplish smooth conversion of the power train while running by connecting a mobile support arm to a driven gear in a simple plantary gear mechanism while a looped internal gear is connected to the power shaft on the side of the rear wheel. CONSTITUTION:A drive gear 13 is fixed on an input shaft 10 connected to the output shaft of a change gear or the like and meshed with an intermediate floating gear 15 supported rotatively on a case 101 through a bearing 14. The gear 15 is meshed with a driven gear 16 fixed to a mobile support arm member 21 in a simple planetary gear mechanism and a given number of planetary gears 22 are supported on the support arm member 21 in such a manner as to be free to rotate. These planetary gears are meshed with a looped internal gear fixed on a hollow shaft 31 of the output shaft on the side of the rear wheel while meshed with a sun gear 24. A front wheel drive shaft 40 is supported on a hollow shaft 50 supporting the sun gear 25 through bearings 52 and 53 in such a manner that the hollow shaft 50 can be selectively connected to a fixed member 85 or a drive shaft 40 through a power train device 110. |
