| 摘要 |
PURPOSE:To set the depth of a box freely by laminating a bias having same shape as the side face of the box on the open section of the box and engaging the pawl section of the bias with a plurality of fixing tongues arranged at the open side of the bottomed electrical box. CONSTITUTION:A plurality of punched sections 10a for piping are made through the surrounding wall of a rectangular bottomed electrical box 100 and the depth thereof is set to W1. Threaded fixing tongues 102 are fixed in the central sections of the short sides at the open face. Then a bias 200 having same shape as the side wall of the box 100 and open opposite faces is formed. The depth thereof is set to W3(<W1), and an engaged section 212, an engaging/engaged section 210, a pawl section 211 and a hole 213 are formed at the position corresponding to the tongue chip 102 in the central section of the short side. A plurality of biases 200, 300 are laminated on the box 100 corresponding to the thickness of the wall and a screw is screwed to the tongue chip 102 through a hole made in a decoration board (not shown). By such arrangement, the depth of the electrical box can be set freely with two types of part. |
