Base for a shielded electronic circuits box.

摘要

The base (3) comprises a printed mother board (5) for connecting electronic components to connectors (7) supported by the base and disposed outside the enclosure of the cabinet (12) containing the components. The bottom (40) of a metal frame (4) of the base forms the base plate of the cabinet. The sides (42) of the frame support an electrical joint (45) and frame the mother board. The continuity of the screening is ensured by areas (6) which are metallised on an external face (51) of the mother board, at least on the outside of the enclosure (12), and which support the connectors and by a border (53) which is metallised on an internal face (52) of the mother board and connected via plated-through holes (54) to the areas (6). The border may be applied against the electrical joint (45) by screws (8). <IMAGE>