| 摘要 |
PROBLEM TO BE SOLVED: To provide an optimal support structure for a carrier supporting a plurality of planetary gears, in a reduction gear adopting a so-called 'marvelous' gear mechanism. SOLUTION: In the reduction gear using the so-called 'marvelous' gear mechanism, a sun gear is used as an input and engaged via planetary gears with a fixed gear and a movable gear which have different numbers of internal teeth, and the rotation of the shaft of the movable gear is used as an output. The movements of the movable gear in thrust and radial directions are regulated by the movable gear shaft and an open end face part of the movable gear and a member for supporting the rotation of a carrier supporting the plurality of planetary gears and for regulating the radial movement is provided only on the sun gear side. On the movable gear shaft side of the carrier, regulation of the radial movement is not effected while regulation of the movement in the thrust direction is effected using a convex shape being ring-shaped on an opposite face and circumferentially divided into a plurality of sections. COPYRIGHT: (C)2003,JPO
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