| 摘要 |
PROBLEM TO BE SOLVED: To provide a security lock capable of being easily handled, having high reliability and having the high effect of protection by making good use of the existing lock in the security lock suitable for installing it in a doorway etc. of a building. SOLUTION: The security lock is equipped with the existing lock 20 installed in a door, a condition detection sensor 40 provided to the existing lock 20 and making detection of a locking condition of the existing lock and an unlocking condition, a locked driving circuit driving a dead bolt 31 provided to an auxiliary lock 30 to the auxiliary lock installed in the door by a locking detection signal given from the condition detection sensor and an unlocked driving circuit driving the dead bolt provided to the auxiliary lock to an unlocked position by an unlocked detection signal given from the condition detection sensor. COPYRIGHT: (C)2007,JPO&INPIT
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