| 摘要 |
PROBLEM TO BE SOLVED: To suppress noise generating from a flange set in a toothed pulley, as much as possible, in a belt transmission gear consisting of a toothed belt and toothed pulley. SOLUTION: A flange is not installed on a pulley of the least outside diameter or a drive pulley 1 out of a plurality of pulleys 1, 2, and so on which form a belt layout, but flanges 6, 7 are installed exclusively on the other pulleys 2, 4.
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