| 摘要 |
PURPOSE:To equalize the inertial weight of a center shaft with that of a circular shaft by arranging the constitution in such a way that a weight balancer is provided in a bebel gear for driving a center shaft in a double differential device where a bebel gear is used, in a full time four-wheel drive vehicle in which a vertical engine is installed. CONSTITUTION:The driving force of an engine is transmitted to an input shaft 39 and the input shaft 39 rotates a planetary carrier 21 to drive a wheel. Then the differential motion of internal/external planetary gears 9, 5 intersectionally work on the right front axles 23, the left rear axle 13 and the left front axles 22, right rear axle 14, according to the difference between the rotation speeds of front and rear, left and right axles 22, 23, 13, 14. The inertial resistance of a circular shaft 26 is larger than that of a center shaft 8 but it is offset by the inertial weight of a balancer 20 and left and right rear shafts 13, 14 rotates with a uniform torque. In this way the inertial weight of the center shaft and that of the circular shaft can be equalized.
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