Shutter device for control unit of control center

摘要

A shutter device is provided for each of a plurality of control unit removably accommodated in vertically superposed unit spaces of a control center. A plate-shaped protective barrier is disposed on the rear surface of each unit space and includes three rectangular openings. The shutter device includes a spring loaded shutter plate slidably disposed on the protective barrier and having two openings identical to those on the protective barrier at positions where the former openings normally alternate the latter openings. A cam is fixed to one end of the shutter plate to be directly driven by one of three protruding housings of a connector on the control unit as inserted into the associated unit space to move the shutter plate to its position where the openings on the latter are superposed on those on the protective barrier.