| 摘要 |
<p>PROBLEM TO BE SOLVED: To make it possible to suppress an oscillation occurred between a belt and a pulley.SOLUTION: One helical teeth 48a, 52a and the other helical teeth 48b, 52b in drive pulleys 51a, 51b and driven pulleys 47a, 47b are so formed as to have different phases along an axial direction ZA. Due to different phases between these helical teeth 48a, 48b and 52a, 52b, phases of oscillations occurred in association with engagements between a timing belt and the drive pulleys 51a, 51b, or between the timing belt and the driven pulleys 47a, 47b are shifted. Therefore, oscillations can be cancelled with each other, and oscillations occurred in the drive pulleys 51a, 51b and the driven pulleys 47a, 47b can be suppressed.</p> |
