| 摘要 |
PROBLEM TO BE SOLVED: To provide a gearing suppressing backlash, to prevent adverse affects to a portion such as a gear or a shaft. SOLUTION: A driven side gear is divided into a first gear 21 and a second gear 22, and in a drive side gear 11, diameters of a tip circle 11a and a root circle 11b are reduced from a shaft orthogonal center face P6 toward axially outward end faces P5, P7. In the first gear 21 and the second gear 22, diameters of tip circles 21a, 22a and root circles 21b, 22b are increased toward axially outward directions. In this shape, the first gear 21 and the second gear 22 are meshed to hold the drive side gear 11 in between to suppress backlash. COPYRIGHT: (C)2009,JPO&INPIT
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