| 摘要 |
PURPOSE:To aim at eliminating abrasion of a tyre or the like upon turn running, by providing an inner differential wheel, an outer differential wheel and a small differential wheel to which a cover is connected through a driven shaft, and by removably attaching an intermediate wheel to the cover so that a differential triple and double wheel is formed. CONSTITUTION:The main part is constituted by an inner differential wheel 1, an outer differential wheel 2 and a small differential wheel 3. An inner wheel 12 and an outer wheel 13 are attached to the inner differential wheel 1 and the outer differential wheel 2, respectively. A driven wheel 5 and a cover 4 are coupled to a driven shaft 7 provided to the small differential wheel 3, and a wheel shaft 6 is coupled to the driven wheel 5. Further, in order to form a differential triple wheel the cover is attached with an intermediate wheel 17 which may be removed so that a differential double wheel is formed. With this arrangement, there may be attained less tyre abrasion, low noise, satisfactory steering wheel manipulation and low fuel consumption since the small differential wheel 3 revolves due to a difference in the rotational resistance exerted to both inner and outer wheels when the wheel rotatively runs upon turning to the right or the left. |
