| 摘要 |
PROBLEM TO BE SOLVED: To provide a lock system which quickly unlocks a double sliding door when a fire or the like occurs.SOLUTION: A body 12 of each lock device 11 mounted to one glass door 3 of each double sliding door 1 of a building includes: a crescent 13 which is locked to a bracket mounted to the other glass door 4; unlocking means which rotates the crescent 13 to detach it from the bracket; an antenna part 37 which receives a radio signal; an operation part 36 which outputs a rotation instruction signal instructing the rotation of the crescent 13 in response to approaching of a magnet 50; and a lock control part 38 for rotating the crescent 13 by the unlocking means. One or more emergency sensors 47 and a central control device 46 sending a radio signal when the emergency sensor 47 detects a state of emergency are arranged in the building. The lock control part 38 actuates the unlocking means when the radio signal is received or when the rotation instruction signal is input. |
