| 摘要 |
A fire door is provided to improve an esthetic appeal on an interface between inner and outer panels, to increase work efficiency through easy and quick connection of the panels, and to diversify designs and colors. A fire door is comprised of a body(100), an outer panel(110), an inner panel(120), a filler(130) having a honeycomb core structure for filling a gap between the outer panel(110) and the inner panel(120). The outer panel(110) is obtained by pressing a vertically long rectangular, thin metal plate and boring a rectangular shape groove(111,112) on the rear side. The inner panel(120) is obtained by pressing a vertically long rectangular, thin metal plate and forming a U-shape connecting section(121,122) on four corners of the front side of the metal plate. Thus, the connecting sections of the inner panel(120) are easily inserted into the grooves formed on the rear side of the outer panel(110).
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