| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To close a shutter more reliably by preventing a lower side door from bounding when closed, in a fire shutter device having a wing door comprising an upper side door and the lower side door. <P>SOLUTION: The wing door in the fire shutter device with the wing door includes a first door body 2 on the upper side and a second door body 3 on the lower side. The first door body 2 is provided with a latch 16 that can project downward from a lower end face 23. The upper end face 32 of the second door body 3 is provided with a latch receiver 17 to which the latch 16 in a projecting attitude is locked. The latch 16 is in a retreat attitude retreated upward when the first door body 2 in a storage attitude or turns into a closing attitude from the storage attitude. The latch 16 is in the projecting attitude only when the first door body 2 is in the closing attitude, and is locked to the latch receiver 17 of the second door body 3 when the first door body 2 is in the closing attitude. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
