| 摘要 |
A starter motor comprising a pinion (3) which engages at an inner circumference of a teeth formed portion (15a) of the pinion (3) with an outer circumference (4c) of the output rotary shaft (4), and a cylindrical member (15) integrally disposed behind the pinion (3). A front end portion of the clutch inner member (9b) of an over-running clutch unit (9) is brought into a sliding abutment relationship with an outer circumferential surface of the cylindrical member (15) so that an inner circumferential surface of the cylinder member (15) is in engagement with the output rotary shaft (4) and in the rotary drive force transmitting relationship. |
