Screening edge mask for printed circuit board, with withdrawing- retaining mechanism

摘要

An edge mask for a printed circuit board comprises a T- sectioned strip 1, to the base web of which can be secured a printed circuit board, via lugs and screws. The strip 1 carries a handle 3 at each end pivoted on a respective shaft 13 having side walls which pass through a slot 8 and cut- away 7 and end in hooks 14 which engage a subframe member 11 of apparatus in which the board is assembled. The handles can occupy alternative retaining and pulling out positions, and are biased by respective springs 15 into the retaining position. Contact strips 10 are also provided for effecting an earth connection to the apparatus frame.