| 摘要 |
PURPOSE: A reduction gear is provided to be able to decide the rotating direction with regulating the tooth number of a gear though rotation of the same direction is transferred to an input shaft, to obtain reduction gear ratio of high ratio, and to obtain excellent power transferring ability even with high loading. CONSTITUTION: A reduction gear includes an input sun gear(14) covering around an input shaft(12), a first differential gear(28) installed around a first fixed shaft connected to a side of a gearbox and engaged with the input sun gear, a second differential gear(30) installed around a second fixed shaft(26) and engaged with the first differential gear, a differential ring gear(46) engaged with the outside of the second differential gear, a differential sun gear(18) formed to the bottom of the input sun gear, a planetary sun gear(20) formed to the bottom of a hollow shaft(16), a planetary ring gear(48) installed to the inner side of the mainframe of the ring gear(45), a carrier(32) connected to the other side of the gearbox and having an output shaft(40), and a planetary gear(44) connected to a third fixed shaft and engaged with the planetary sun gear to the inner side and the planetary ring gear to the outside.
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