| 摘要 |
PROBLEM TO BE SOLVED: To provide a power transmitting mechanism assembling a plurality of operation gears requiring phase matching correctly, easily and almost automatically. SOLUTION: In the case of requiring phase matching on assembling, first and second operation gears 1, 2 are provided and all of them are meshed with an intermediate gear 3. Recessed parts or protruding parts for phase matching are provided at least as many as the number of the first and second operation gears in part of a standard tooth row of the intermediate gear 3 corresponding to each phase position of the first and second operation gears 1, 2. Tooth-free parts 1a, 2a (recessed parts) respectively paired and engaged with a thick tooth 3a of the intermediate gear 3 are arranged in part of a standard tooth rows of the respective first and second operation gears 1, 2. As the tooth-free part 1a and a thick teeth 3a of a pair of the first operation gear 1 and the intermediate gear 3 are engaged, the tooth-free part 2a of the second operation gear 2 engages with another thick tooth 3a of the intermediate gear 3 and the first and the second operation gears 1, 2 are fitted in a target phase position, phase matching is finished easily, surely and almost automatically, and assembling is completed. COPYRIGHT: (C)2009,JPO&INPIT
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