| 摘要 |
PURPOSE:To prevent teeth of various gears from wearing or damaging by mounting the gears mounted on rotor and output shafts through frictional rings on the shafts. CONSTITUTION:When an output gear 10 stop rotating, a large stress is applied between a rotor gear 61 and a gear engaged with the gear 61 by the rotary force of a rotor shaft 5, and the teeth of these gears tend to be damaged. When the stress applied between the shafts 5 and 61 at this time, however, exceeds the frictional force of a frictional ring 12, the gear 61 remains stationary and only the shaft 5 is rotatably slipped. As a result, it can prevent the various gears from wearing and damaging. |
