| 摘要 |
PURPOSE:To effectively reduce the gear noise by urging two subgears in the direction of revolution reverse to each other, in a gear mechanism for connecting two driving shafts. CONSTITUTION:As for the first and second gears 19 and 21 each of which has the same number of gears to that of a main gear 17, the first subgear 19 is urged in the direction of revolution of a crankshaft 15 by a coil spring 35 installed in contraction form between the main gear 17, and the second subgear 21 is urged in the reverse direction to the direction of revolution of the crankshaft 15 by a coil spring 43 installed in contraction form between the main gear 17. Therefore, when one crankshaft 15 is set on the driving side, the first or the second subgear 19 or 21 meshes with the other main gear 17, keeping a prescribed load by the respective coil springs 35 and 43, and backlash is eliminated. Therefore, the gear noise can be effectively reduced. |
