| 摘要 |
PROBLEM TO BE SOLVED: To provide a lock device facilitating insertion and extraction of an unlocking key, and having high flexibility in a layout position of a key hole. SOLUTION: The elevator landing door is equipped with a lock metal fixture for unlocking a lock by operating a lever provided on an elevator landing door with the unlocking key inserted from the key hole. A shaft engaged with a tip end of the unlocking key is rotatably provided in the key hole, and a piece for operating the lever is provided at one end of the shaft. An engaging portion of the shaft is a projecting portion, and an engaging portion of the unlocking key is a recessed portion. COPYRIGHT: (C)2005,JPO&NCIPI
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