Back-plate adaptor for PCB insulation and continuing test jig - has back plate resiliently mounted on support acting as guide by elastic member also serving as insulator

摘要

The adaptator contains a back-plate (20) which supports, through an air-tight joint (24), a PCB (2) to be tested. This back-plate (20) is mounted on a support plate (19) fitted with test points (7). Guides (22) are fitted to control the displacement of the back-plate (20) in relation to the support plate (19). An elastic component (24) pushes the back-plate (20) away from the support plate (19). This component (24) is also used to ensure the air-tightness between the back-plate (20) and the support plate (19). The vacuum creating system is connected to the support plate (19). The air-tight elastic joint (24) pref. includes a supple gasket whose cross-section is tubular. The back plate also contains a central cut-out portion having the dimension equal to the polygon delimited by the joint placed between the back plate and the printed circuit.