| 摘要 |
PROBLEM TO BE SOLVED: To completely eliminate the progress of wear due to a moment in surface deflecting direction by preventing the moment from acting on a sub gear. SOLUTION: This scissors gear is formed so that a sub gear 13 having the same tooth profile and number of teeth as a main gear meshes with a mating gear together with the main gear, and the sub gear 13 is energized against the main gear in rotating direction by a spring so as to eliminate a backlash with the mating gear. The acting point of a first force Fs acting from the spring on the sub gear 13 the acting point Fg of a second force input from the mating gear to the sub gear 13, and the acting point of a third force N inputted from a bearing part to the sub gear 13 are set at the same axial position.
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