| 摘要 |
PURPOSE:To enable reduction gear ratio to be easily instantaneously changed even in travelling in a non-stage automatic speed change gear, for a vehicle by controlling the rotational speed of a rotary case in the non-stage way according to the load fluctuation to provide non-stage speed change. CONSTITUTION:The rotation of an input shaft 7 in starting rotates a sun gear 10 and gives the reverse rotational force to a rotary case 13 while being blocked by a reversal preventing mechanism 17. A planet gear 11 revolves to rotate an intermediate output shaft 14, a pin 42 slides along a slant surface 40 to open a controlling valve 37, an intermediate output shaft 14 is rotated freely relative to the rotary case 13 and the final output shaft 41 is driven with substantial deceleration. And when travelling is started, the pin 42 is returned to the original position by a spring 44 to close gradually the controlling valve 37 and gradually add resistance to the relative rotation of rotary case 13 to the intermediate output shaft 14, so that said output shaft 41 is pressed by a piston 33 to start the rotation in the same direction as the input shaft 7 and provide the rotational speed ratio of 1:1. Next when an accelerator pedal is pedalled, the reduction gear ratio is increased. Thus, the reduction gear ratio can be easily changed even in travelling.
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