| 摘要 |
PURPOSE: A coupling structure for a decorative plate of a fire door is provided to improve workability and productivity, to reduce manufacturing costs and to improve in appearance of a door. CONSTITUTION: The coupling structure for a decorative plate of a fire door comprises the steps of: interposing a space plate(5) provided with many perforated holes(5a), many solid plates(4) provided with projected decorations(4a), and a decorative plate(3) provided with many fitting holes(3a) to a groove(2) of a steel door(1); interposing projected decorations of the solid plates(4) to fitting holes(3a) of the decorative plate(3) and interposing a space plate(5) between bents(3d) of the decorative plate(3); and interposing/fastening many fastening projections(3b) of the bents(3d) to fastening holes(2a) formed on the groove(2).
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