| 摘要 |
PROBLEM TO BE SOLVED: To provide a starter for an internal-combustion engine rather harmless to the environment without causing increase in cost by introducing such a structure that the engine can be operated with a high rotating speed at the final stage from high torque in the initial period in starting the engine. SOLUTION: The starter is structured so that the inside surface tapered part 32b of a movable cam plate 32 is pressed to the periphery 10a of an outer cam 10b of a clutch 10 to cause the outer cam 10b and an internal gear 20c to rotate in a single piece at the same rotating speed. According to the principle of planetary speed reduction, a sun gear 20a, a planet gear 20b, and an arm rotate in a single piece, i.e. are put in the condition with the reduction ratio being 1. The peripheral tapered part 32a of the movable cam plate 32 is put in pressure contact with a tapered part 9a of a housing 9 and the internal gear is fixed as not capable of rotating. This generates the same condition as in an ordinary planetary speed reduction to give a high reduction ratio. COPYRIGHT: (C)2004,JPO&NCIPI |
