| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve assemblability without using a dedicated component and restrict movement of a rotation transmission member in the axial direction. <P>SOLUTION: In a speed reducer 10, a rib 32 is provided to either of a helical gear 28 and a washer 36, and a rib 34 is provided to either of the helical gear 28 and a washer 40. The rib 32 is abutted to the another of the helical gear 28 and the washer 36, and the rib 34 is abutted to the another of the helical gear 28 and the washer 40, so that the movement of the helical gear 28 in the axial direction can be restricted. Accordingly, the movement of the helical gear 28 in the axial direction can be restricted without using the dedicated component. Further, as the helical gear 28 or the washer 36 and the washer 40 are attached, the rib 32 and the rib 34 are attached, so that assemblability can be improved. <P>COPYRIGHT: (C)2012,JPO&INPIT |
