| 摘要 |
PURPOSE: To reduce abrasion of a pinion and a ring gear, smoothly mesh the pinion and the ring gear, and achieve miniaturization. CONSTITUTION: A coil spring 6 and a plate 5b to be brought into contact with the rear end 3f of a thrust spline 3A of an overrunning clutch and for transmitting resiliency of the coil spring to the thrust spline 3A are arranged between the inner periphery of a plunger 4 and an output shaft 1, and a plate 5a for meshing a pinion with a ring gear by resiliency of the coil spring is fixed on the inner periphery of the rear end side of the plunger when the tops and the bottoms of the teeth of the pinion 3P coincide with those of the ring gear 50. |
