| 摘要 |
A receptacle box buried into the wall surface of a multi-household house is provided to periodically remove the dust within the receptacle box. A plug holder and a cover are combined with a housing(110) and move horizontally. The combination among the housing, plug holder and cover is performed by a locking piece. When the plug holder is separated from the housing, the supply of electricity is stopped. A rotation body(144) and a fixing body(143) are rotatably connected with each other. A screw hole(146) corresponding to a screw(112) is formed at the center of the rotation body and the rotation body is engaged with the screw and rotated when attaching and detaching the plug holder.
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