| 摘要 |
PROBLEM TO BE SOLVED: To prevent variation in dimension of parts. SOLUTION: A motor 5 and a reduction mechanism 50 can be laid out directly and concentrically one lower housing 45 of a two-piece housing, so that the variation of dimensions of parts in assembling the motor 5 and the reduction mechanism 50 can be decreased as compared with the case where an intermediate member in interposed. By such decrease of variation of dimensions of parts, the accuracy of parats can be improved, the quality can be stabilized and the cost can be reduced. |
