| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent an outlet from being opened upward when not used. SOLUTION: A frame body 7 having an approximately rectangular aperture part 10 inside is installed in an upper end of a hole, the aperture part 10 is made freely opened or closed by attaching a cover body 8 to one longer side of the aperture part 10 by a first hinge 12 in the way the cover body 8 can be rotated freely outward, a small aperture 15 opened between the first hinge 12 of the cover body 8 and the longer side of the frame body 7 on the opposed to the first hinge 12, and small apertures 15 are made freely opened or closed by attaching small cover bodies 9 in the number corresponding to that of the outlets 3 to the end part of the cover body 8 on the opposite to the frame body 7 and facing to the small apertures 15 through a second hinge 16 in the way the small cover bodies 9 are made freely rotatable inward. Consequently, only a number of the small cover bodies 9 necessary corresponding to the number of the outlets 3 to be used can be set in an opened state. As a result, the upper parts of all of the outlets 3 which are not used can be covered with the small cover bodies 9, so that the appearance of the floor face 1 can be improved and stumbling by the outlets can be prevented.</p> |
