Rack for circuit boards of an electronic system

Details Rack for circuit boards of an electronic system Rack for circuit boards of an electronic system

H - Electricity

05

K

356/22, 356/3, 3

H05K 7/20 (2006.01) H05K 7/14 (2006.01) H05K 7/18 (2006.01)

Patent

CA 1284231

Abstract of the Disclosure The present invention is directed to a structure for positioning electronic modules of an electronic system therein, and particularly to a rack often called a card cage in which circuit boards are disposed. The rack embodying the invention incorporates a frame having four sides and a back plate. Two of the opposite sides are grilles. The frame is adapted for supporting printed circuit boards perpendicular to the grilles. Thus, a fluid cooling medium, such as air, can enter the rack through one of the grilles, flow along and between the circuit boards and exit through the other grilles. The resistance to the flow of such air for cooling by the grilles is significantly greater than the boards disposed therein. Thus, the grilles permit a uniform coolant flow for each of the circuit boards in the rack. The rack has a lever assembly which remotely actuates connectors positioned in the rack to contact the circuit boards positioned therein. The lever assembly is further provided with a spring member which serves as a force-limiting device such that excessive force is not applied to the boards and to the connectors when the boards are inserted into the rack. The rack also has guiding members for guiding warped circuit boards into position within the rack.

528237

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