| 摘要 |
PROBLEM TO BE SOLVED: To accurately stop a door member at a normal closing position without complicating the construction by combining simple control means using single detecting means with a closing position holding mechanism. SOLUTION: This equipment comprises a closing position perpendicular to a passage W by a swing motion around a swing shaft at the base side, a door member 2 capable of creating two open positions along equipment frame 3 for opening the passage, a drive mechanism 4 for driving and swinging the door member 2 through the swing shaft 1, a closing position holding mechanism 5 for actuating a restoring force to the swing shaft 1 so as to return the door member 2 to the closing position, a detecting piece attached to the swing shaft 1, and a limit switch for detecting the detecting piece in the middle of swinging of the door member 2 from each open position to the closing position. When the limit switch performs the detecting operation, timer means provided operates the drive, mechanism 4 until the door member 2 is stopped at the normal closing operation. |
