| 摘要 |
<p>The invention is an actuator with simple means for a manual operation in case of emergencies. The invention is an actuator comprising a cylinder (100) in which the 1<st> fluid pathway (103) and the 2<nd> fluid pathway (104) having the different course are formed on the wall (110) of the cylinder (100); pistons (160) positioned in said cylinder (100) the 1<st> fluid pathway (103) and the 2<nd> fluid pathway (104); and the power transmission units (120, 130, 140) connected to one side of piston (160), and a pathway (210) is provided in the cylinder (100) to communicate the 1<st> space (101) with the 2<nd> space (102) in the cylinder (100), and on one side of the pathway (210) is provided a hole (212(, to cross the pathway (210) through which a valve (220)9 is engaged to open or close the pathway (210).</p> |
