| 摘要 |
PROBLEM TO BE SOLVED: To provide a latch mechanism that opens a latch itself in a locked state without unlocking a lock itself and opening a door when power failure is caused on the occurrence of earthquake and power supply is lost, and to provide a latch and a latching device using the same, and an automatic disconnection system of the latching device in an earthquake.SOLUTION: A latch mechanism (100) is constituted of an upper fitting (110) and a lower fitting that can be hooked with the upper fitting. The lower fitting (110) is constituted of a receiving metal fitting (121) and a clasp (121) detachable from this receiving metal fitting. A clasp lock pin ring (123) provided in the lower half part of the clasp (121) and a receiving metal fitting lock pin ring (126) provided in the long wall central part of the receiving metal fitting (125) are made possible to open a latch without a duplicate key by making it detachable using a lock pin (201). |
