| 摘要 |
PROBLEM TO BE SOLVED: To improve the safety of a door lock with a simple constitution. SOLUTION: A door lock safety device comprises a body part 1 which can be mounted on a door 50, an opening part communicating with a key hole 53 of a door lock 52, a key hole cover 7 to cover the opening part in an openable/closable manner, a solenoid 9 to open/close the key hole cover 7, an input means to input the unlocking signal, and a control part 11 to control the solenoid 9 based on the unlocking signal.
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