| 摘要 |
PROBLEM TO BE SOLVED: To provide an operating device for a movable part, in especially a cover, capable of dispensing with an expensive gear unit by obliging a cover to take an intermediate position without any current. SOLUTION: A piston divides a cylinder into two operating spaces in a piston rod, and a base part 1 is operationally connected to the movable part 3 and provided with a driving device 17 of an external energy control type operating relative to a driving force of a piston-cylinder device 7. A control device 29 monitors the motion of an operating device 15 and confirms failure, when a parameter expressing the motion of the stored parameters is deviated from a threshold limit, a movable structure is retained by an interrupting device when the current of the operating device is disconnected, the interrupting device is formed of the piston-cylinder device 7, and the operating device 15 can intercept the flowing connection 63 between the operation spaces 59 and 61 via changeover valves 55, 77, and 97. |
