| 摘要 |
PROBLEM TO BE SOLVED: To properly auto-lock a wing against a shake due to an earthquake or the like. SOLUTION: A lock device body has a casing 15 of a synthetic resin mounted on the front end lower surface (internal surface of open periphery of box body 3) 8A of a top plate 8. Also, the device has a dead bolt 16 inserted in the casing 15 so as to be capable of freely leaving in a vertical direction, the first coil spring 17 for energizing the dead bolt 16 upward at all times, a holding member 18 for holding the dead bolt 16 preliminarily in the casing 15, and an inertia member 19 for detecting the shake of the box body 3 due to an earthquake or the like and then disconnecting the holding member 18 from the dead bolt 16. |
