| 摘要 |
PROBLEM TO BE SOLVED: To provide a friction gear having a stable noise reduction effect. SOLUTION: The friction gear 5 has: a main toothed gear 9; an auxiliary toothed gear 10 coaxially arranged with the main toothed gear 9 and with the different number of teeth from those of the main toothed gear 9; a plate spring 11 (energizing means) to push the auxiliary toothed gear 10 against the main toothed gear 9; and a spacer 12 arranged between the main toothed gear 9 and the auxiliary toothed gear 10 and free to relatively rotate against the main toothed gear 9 and the auxiliary toothed gear 10. COPYRIGHT: (C)2003,JPO
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