| 摘要 |
<p>PURPOSE:To simplify and miniaturize a structure and reduce the cost by changing irregular coupling positions so that the upper face of a prismatic object is made the same level as a floor surface or protruded from the floor surface, and providing a wiring outlet port penetrating downward on the side face of the prismatic object. CONSTITUTION:A coupling protruded stripe 22 is horizontally provided on an inside face faced to an outer frame 2 provided on a partial notch of a floor plate 1. A cavity 33 is provided below the front and rear side faces 32 of a prismatic object 3 with a nearly square upper face 31, and three parallel coupling recess grooves 34 are provided on the right and left side faces 32. When the highest coupling recess groove 34 of the prismatic object 3 are coupled with the coupling protruded stripe 22, the upper face 31 of the prismatic object 3 becomes the same level as the upper face of the floor plate 1. When the second coupling recess groove 34 is coupled, the upper face 31 of the prismatic object 3 becomes nearly the same level as a finishing material 4 installed on the floor plate 1. When the third coupling recess groove 34 is coupled, the prismatic object 3 is protruded on the finishing material 4, and a wiring outlet port 5 is formed at the cavity 33. The structure is simplified and miniaturized, and the cost is reduced.</p> |
