| 摘要 |
An inertia sliding type engine starter motor, wherein an inner member 24b of an over-running clutch rotatable with an armature rotary shaft is axially forwardly immovably supported by a bearing 28 mounted to a front housing 22. The clutch inner member has helical splines 29 formed in its inner circumference, the pinion 30 is axially slidably mounted on the rotary shaft, and a rotational force is transmitted from the clutch inner member to the pinion through the helical splines. The pinion has formed at its rear portion a flange 30d having an outer diameter larger than a diameter of an opening in the front end of the front housing. The front end of the clutch inner member and the rear end surface of the pinion abut with each other when the pinion is disengaged with an engine ring gear, and the armature rotary shaft in front of the pinion is covered by a cover 34. |
