| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear-transmitting mechanism capable of easily displacing a phase of the speed fluctuation to be generated at an engagement position of each gear to surely reduce the speed fluctuations as a whole, even if the number of gear teeth is increased. SOLUTION: This gear-transmitting mechanism is provided with a driving helical gear 14 connected to a motor 10 via a rotary shaft 12, an intermediate helical gear 16 engaged with the driving helical gear 14 and a target helical gear 18 engaged with the intermediate helical gear 16. Each helical gear 14, 16 and 18 has gear teeth cut obliquely at a predetermined angle with respect to each rotary shaft 12, 20 and 22, and has the same number of gear teeth. A mark C means an engagement position of the driving helical gear 14 with the intermediate helical gear 16, a mark D means an engagement position of the target helical gear 18 and the intermediate helical gear 16, and the engagement position D is displaced by the quantityδin a direction Z with respect to the engagement position C.
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