| 摘要 |
<p>PURPOSE: To facilitate the lead-out of a wiring, by providing wiring lead-out ports communicating with wiring grooves in the corners of a floor plate or a composite floor plate. CONSTITUTION: Supporting shelfs 11 are provided in the whole periphery of a floor plate 1, and in the four corners o the floor plate 1, long-semicircle-form engraved holes each of which reaches larger depth than the supporting shelf 11 are so provided as to form wiring lead out ports 2. Such floor plates 1 are so laid on the surface of a floor that their adjacent peripheries are opposed to each other with a wiring groove 3 between them. Between the opposite supporting shelfs 11 to each other, a cover 4 made of a strip-form steel plate is so provided removably as to cover the wiring groove 3, and thereby, the whole surface of the floor comprising the laid floor plates 1 is made flat. A cord 5 laid in the wiring groove 3 in the state of the cover 4 being removed therefrom is drawn out from the wiring lead-out port 2 provided in the corner of the floor plate 1 onto the floor. In this case, it is convenient that the cord 5 is drawn out from the wiring lead-out port 2 present beyond an intersecting portion 31 of the wiring grooves 3, because the cord 5 can be drawn out without bending it in a small radius of curvature. In this way, the cord 5 laid in the wiring groove 3 is prevented from being led out from the side surface of the floor plate 1 while bent orthogonally.</p> |
