| 摘要 |
<p>PURPOSE:To detect a housing buried in a wall from the surface of the wall by means of a metallic detector of eddy current type or the like by distributing metallic wirings at the brim of the opening of the housing which consists of synthetic resin and whose one side is opened. CONSTITUTION:Metallic wires 2 are led in the top and bottom of a housing 1 consisting of synthetic resin, and a section 3 for detection constituted of synthetic resin including of metallic wires is provided at the brim, and the section 3 for detection is made integrally with the housing 1. At this time, the metallic wires are entangled complicatedly with one another in the synthetic resin, and have many contact points, so volume resistivity of the section 3 for detection united this way becomes low, and it is detected easily by an eddy current type of metallic detector 5. As a result, the housing 1 is not seen, being buried in the wall 4, but the position of this housing can be detected by the metallic detector 5 of eddy current type or the like.</p> |
