| 摘要 |
PURPOSE:To provide a one-way rotating mechanism without use of a one-way clutch, by inside directing a force acting on a mesh point of an internal ear with a driven gear to let the internal gear abut against the driven gear. CONSTITUTION:An internal gear 21 of a first intermediate gear 18 is meshed with a driven gear 22 to let the driven gear 22 rotated in a direction as depicted by an arrow 23. A force acting on a mesh point 23a of the internal gear 21 with the driven gear 22 is directed inside of a straight line 24 connecting the mesh point with a center point of a drive gear 14 as depicted by an arrow 25. Therefore, the driven gear 22 is urged to the internal gear 21 to thereby obtain stable meshed condition. Accordingly, a one-way rotating mechanism may be provided without use of a one-way clutch.
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