| 摘要 |
PURPOSE:To make a steering operation light by driving in rotation a front wheel through a drive shaft and a driven shaft from a uniform velocity joint provided on the lower side of the under-bracket of a front fork. CONSTITUTION:The drive force of an engine 1 drives a gear wheel 5 in rotation through a rear portion chain 4 from a drive shaft 3, and at the same time is transmitted through a front portion chain 6, a torque distribution device 7 which is also used as a rotation difference absorption device, and a connection chain 12, to a uniform velocity joint 11 provided on the lower side of an under- bracket 13 which is swingable together with the steering of a front fork 8. And it rotates a driven shaft 23 through a drive shaft 20, a bevel gear 22, a bevel pinion 21 and through a pair of gears from the uniform velocity joint 11, and it drives a front wheel 26 in rotation through a bevel pinion 24 and a bevel gear 25. Thus, a steering operation becomes light, and also a cushioning performance is improved due to the reduction of weight under the front fork spring.
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