| 摘要 |
PROBLEM TO BE SOLVED: To secure a fixing member surely to a tubular member by interposing a tubular member in the space between a board and the front wall of a wiring box regardless of the interval between the board and the front wall of the wiring box body buried in a concrete layer. SOLUTION: An internally threaded screw hole 14C is made in the front wall 14 of a wiring box body 1 buried in a concrete layer 6 and the externally threaded 11A tubular member 11 is screwed therein. Consequently, the tubular member 11 is fixed to the wiring box body 1 such that it can project and retract therefrom and the projection of the tubular member 11 can be adjusted to be equal substantially to the interval W between the front wall 14 and the board 8 and fixing parts 21, 21 at symmetrical positions are located on a same vertically line by turning the tubular member 11 forward or reversely. |
