| 摘要 |
PROBLEM TO BE SOLVED: To provide a sliding door type fire door effectively utilizing a floor and keeping the height of a whole building low. SOLUTION: This fire door has two door bodies 11 for closing an indoor opening by an automatic closing device in emergency, the door body 11 is formed by connecting a first door part 111-a third door part 113, which are defined as panel doors having ribs 21, and door panel materials 22 provided on the surface sides of the ribs 21. This constitution can reduce the weight of the door body 11. The flatness of the door body 11 can be improved by connecting parts of the door panel materials 22 partially overlapped on other ribs 21 to be connected. COPYRIGHT: (C)2008,JPO&INPIT
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