| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for an elevator landing door for preventing smoke from entering and easy in unlocking operation. SOLUTION: The elevator landing door equipped with a lock metal fixture for unlocking a lock by operating a lever is equipped with a hollow member behind a hole provided on the elevator landing door, and a valve for opening/closing an opening of the hollow member is turnably provided. One end of the lever is arranged near the lower part of the valve, and the end of an unlocking key is bendably structured and can be engaged/disengaged to the end of the lever. COPYRIGHT: (C)2004,JPO
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