| 摘要 |
<p>PURPOSE:To prevent the breakage of gears due to overload by providing, to a gear train, a gear which is elastically supported so as to be engaged with the adjacent gear and which is capable of being moved so as to release the engagement. CONSTITUTION:The power from a driving source 19 is transmitted to prescribed parts 3, 4, 5 via a gear train 14. And, when an overload is put on the gear train 14, a gear 12 which has been elastically supported moves so as to release the engagement with the adjacent gear 18a. Thus, since the engagement of the gear 12 with the adjacent gear 18a is released, the transmission of power to the prescribed parts 3, 4, 5 is cut off, so that the load of the gear train 14 can be released.</p> |
