| 摘要 |
PURPOSE:To easily perform control of chassis position and traveling on uneven grounds by subjecting a front wheel to shaft-drive as well as a rear wheel to chain-drive and by reducing the weight of the rear wheel as well as making the ground clearance of the front wheel high. CONSTITUTION:When an engine 3 is started to put a clutch in connection, sprockets 13 and 14 attached to a drive shaft 12 are rotated. A sprocket 16 is rotated through a chain 17 wound around a sprocket 13, and a rear wheel 5 is driven through a rear shaft 15. On the other hand, the sprocket 22, the input shaft 20 and the output shaft 21 of a transmission device 19 are rotated through a chain 23 wound around the sprocket 14, and further a front shaft 28 is rotated through a differential gear 26 and a drive shaft 27 by means of rotation of an input gear 25 united with the output shaft 21, so a front wheel 4 is driven. According to the above processes, the weight of a rear wheel 5 can be reduced as well as the ground clearance of the front wheel 4 can be increased.
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