| 摘要 |
PURPOSE:To make the torque at the starting small by a method wherein gears having different numbers of teeth each other are engaged such that one side gear is engaged to another gear bended in turn by a driving side member. CONSTITUTION:The engaging position of each gear part 9, 12 moves by the rotation of a driving shaft 3, namely a push roller 13, and a gear part 12 namely a flexible gear 10 is rotated in reduction determined by the numbers of teeth of each gear part 9, 12, because a gear part 9 is fixed. This reduction rate is (N-N0)/N when the numbers of teeth of a gear 8 is N0, and the numbers of teeth of the flexible gear 10 is N. A funnel type plate part 11 makes funnel shape in the condition that said plate part 11 is not pushed to the shaft direction by a roller part 15 of a push roller 13, and the pushed surface accordingly deflects when it is pushed to the shaft dirction by the roller part 15. |
