| 摘要 |
<P>PROBLEM TO BE SOLVED: To simplify structure to reduce the manufacturing cost in the case of a relatively large reduction ratio, and to at miniaturize, and to restrict the generation of noises and vibration to the utmost. <P>SOLUTION: A reduction gear of a first stage is a wedge roller type transmission A (reduction gear), and a reduction gear of a second stage is a planetary gear reduction gear G. With this structure, in the case of a relatively large reduction ratio (for example, reduction ratio of 20-40) total reduction ratio can be satisfied, and arrangement in a limited space with a compact design is possible. Furthermore, since the number of output revolution is remarkably lowered by the wedge roller type transmission A (reduction gear) of the first stage, in the case of transmitting power by inputting the number of output revolution to a sun gear 62 of the planetary gear reduction gear G of the second stage, the generation of noises and vibration can be sufficiently restricted. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
