Quick disconnect card-on-board electronic package assembly

Claim 1

A card-on-board electronic package assembly which comprises: a printed circuit board having a plurality of spring contacts arranged on a surface thereof; a board stiffener fastened to said circuit board and having a plurality of channels with each channel provided with a contact housing having holes in alignment with contacts on said board; a plurality of printed circuit cards each having a plurality of blade contacts along one edge and each card being mounted in a card holder; a card guide frame having a plurality of grooves across the top and bottom for receiving said card holders and cards and guiding the blade contact edges of inserted cards into said channels and contact housings; captive fastening means associated with each card comprising a screw mounted at the top and bottom of the card with each screw having a retainer clip attached thereto, said screws being effective when tightened one at a time to secure inserted cards to said board stiffener with their blade contacts in engagement with the board spring contacts and operable when loosened to disconnect secured cards from said board stiffener for removal; a latching tab provided on the top and bottom edge of each card holder and the top and bottom grooves in the card guide frame each have a recessed portion which coact with said tabs to latch inserted card holders against vertical movement and prevent either the top or bottom edge of the cards from lifting when the opposite edge is tightened.