Patent ID: 8610005

Claim:
A sealing cover removably mounted to an open part of an equipment case accommodating an electric circuit, the electric circuit having an operation control portion for switching a main body circuit between an operating state and a shutdown state in dependence on signals inputted to an input terminal thereof, said sealing cover comprising: a cover body mountable on the equipment case and having a continuous covering part configured to close the open part of the equipment case, a sealing ring holding wall projecting from the covering part and having an outer peripheral surface configured to be disposed along an inner surface of the open part of the equipment case and an inner peripheral surface opposite the outer peripheral surface; a sealing ring having an annular sealing part fit on the inner and outer peripheral surfaces of the sealing ring holding wall and configured for sealing a gap between the cover body and an inner peripheral surface of the open part, the sealing ring further including a fixing part covering the covering part inward of the sealing ring holding wall; and a holding plate mounted to the cover body and holding the sealing ring on the cover body, an interlocking connector projecting from the holding plate and having a short circuit terminal therein, the short circuit terminal being disposed to be connected to the input terminal when the cover body is mounted on the equipment case and removed from the input terminal when the cover body is disconnected from the equipment case to switch the main body circuit from the operating state to the shutdown state.