| 摘要 |
<p>PURPOSE:To provide a simple fire-resistant structure and to improve strength by a method wherein a plate made of metal is embedded all over the space inside a fitting frame made of synthetic resin which is disposed on the front side of an opening of a structure material and wherein a wiring implement can be fitted removably. CONSTITUTION:The shape of a plate 14 made of metal is substantially the same with that of a fitting frame 1. U-shaped pieces are formed integrally with the upper and lower parts of the plate 14 respectively and insertion holes 15a corresponding to screw holes 13 are bored on the opposite sides of each of the U-shaped pieces. Besides, a round part 16 is formed integrally in a place corresponding to the part of a fitting hole 10. The fitting frame 1 wherein the plate 14 is embedded is disposed in this way, and thereby the fitting frame 1 can be used for simple fire resistance.</p> |
