| 摘要 |
A differential gear for outputting a sufficient torque when the speed of an output shaft is decreased in comparison with that of an input shaft. The differential gear is composed of a rotary input shaft 2 having a main drive rotating member 5, a plurality of intermediate rotating members 6, 8, 10, 12 constructed to provide an inertial force for transmitting sequentially rotary power of the main drive rotating member 5 while revolving around or staying on the axis of the input shaft, and a rotary output shaft 3 having a driven rotating member 13 to which rotary power of the final intermediate rotating member 12 is transmitted. The number of revolutions of the intermediate rotating members around the axis is adapted to increase with a decrease in speed of rotation of the output shaft 3 in comparison with the speed of rotation of the input shaft 2.
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