| 摘要 |
The object of the present invention is to provide a rotary member mounting structure with which the work of assembling the rotary member mounting structure is extremely easy, the number of parts and man hours can be reduced, and the effort and cost associated with the assembly work can be greatly reduced. The invention offers a rotary member mounting structure for mounting a speedometer worm gear 3 closely adjacent to a drive gear 2 that is supported on an output shaft 1. The rotary member mounting structure comprises: a rotation preventing means configured to prevent the drive gear 2 from rotating relative to the output shaft 1 and to prevent the worm gear 3 from rotating relative to the output shaft 1; a first fastening ring 5 configured to prevent the drive gear 2 from sliding axially toward the worm gear 3 and to prevent the worm gear 3 from sliding axially toward the drive gear 2; and a second fastening ring 8 configured to prevent the worm gear 3 from sliding axially in the direction opposite (i.e., away from) the drive gear 2. |
