| 摘要 |
PURPOSE:To prevent a clutch roller from being unusually caught into a narrow width part due to an impact torque from a driven side by determining the moving quantity of said clutch roller of a one-way rotation clutch structure by the clearance between a supporting pin and a hollow part. CONSTITUTION:When a motor part 2 is driven accompanying the operation of a magnet switch 1a, the drive is transmitted to a ring gear 13 via a driving gear 3a, a driven gear 4, a one-way rotation clutch 6, and a pinion 11 to start an engine. The oneway rotation clutch 6 consists of the members of a clutch inner 7, a clutch outer 8, clutch rollers 9 which are loosely rotatably fitted in wedge shaped roller grooves 8a, resilient members 9a for energizing the rollers, etc. The clutch roller 9 is formed with a hollow cylindrical body, and a supporting pin 12 is loosely fitted through the hollow part. And, the clutch roller 9 is movable around the shaft center of the roller groove 8a within the range of the clearance between the supporting pin 12 and the hollow part. |
