| 摘要 |
PROBLEM TO BE SOLVED: To provide a door structural body hardly allowing an invader to know about a mounting place of a key operating section from the outside and a structure and having a lock which is hard to break. SOLUTION: A striking plate 4 is attached to a door body 1, and the remote-controlled key operating section 7 capable of being locked and unlocked to the striking plate 4 is provided to a surrounding frame 2. Key unit mounting sections 5 for mounting a key unit 3 consisting of the striking plate 4 and the key operating section 7 in advance are arranged to a plurality of places in the surrounding frame 2, and the key unit 3 is selectively mounted from the key unit mounting sections 5 in a plurality of places. COPYRIGHT: (C)2005,JPO&NCIPI
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