| 摘要 |
PURPOSE:To simplify intercoupling of two planetary gear devices by a method wherein the solar shaft of a planetary gear device is inserted in the relay shaft hole of a relay shaft, and the outer shaft cylinder part of the relay shaft is inserted in the carrier shaft hole of a planetary gear device. CONSTITUTION:When the power of a motor is connected to a first stage solar gear, since an outer shell internal gear 3 is secured, a planetary gear 2 is rotated, and a carrier 4 effects deceleration rotation. In this case, since an outer shaft cylinder part 40 of a relay shaft 9 is inserted in a carrier shaft hole 15, the relay shaft 9 is rotated togetherwith the carrier 4. Further, since the tip of the solar shaft 22 with a locking mechanism of a second stage planetary gear device B is inserted in a relay shaft hole 41 of the relay shaft 9, a solar gear 1 is rotated. Rotation torque is transmitted radially from the outside to the inside through the relay shaft 9, twist torque is not exerted on the relay shaft 9, but twist torque is generated between the solar shaft 22 with a locking mechanism and the solar gear 1. Besides, since the size of this part can be increased to a well enough high value, this part is durable to high torque.
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