Patent ID: 6607396
Filing Date: 2003-08-19
Classification: H05K

Abstract:
An IC socket to be fixed to a circuit board having a conductor pattern formed thereon, the conductor pattern having conductors arranged an interval which is the same as the interval of the terminal pins of an IC, the IC socket comprising:a plurality of fastening screws; a plurality of pushing screws; a fixture frame having a window opening formed therein and defining inner side edges, said fixture frame fixed to the circuit board with said window opening surrounding the conductor pattern, the IC mounted in the window opening of the fixture frame, so as to allow the terminal pins of the IC to lie on the conductors of the conductor pattern; a rectangular intermediate frame having a window opening and linear ridge-like retainers extending outwardly and each having opposite ends and being spaced-apart from each other and integrally formed to define said window opening, said intermediate frame being adapted to be put on said fixture frame with the ridge-like retainers inserted in said window opening of said fixture frame, running along said inner side edges of said fixture frame, and lying on the terminal pins of the IC; and an uppermost frame including a bottom, four corners, four side portions connecting said four corners, a through hole at each of said four corners, and at least one additional through hole at each side portion, said uppermost frame being put on said rectangular intermediate frame and being fixed to said fixture frame by said fastening screws inserted in said through holes, wherein at intermediate lengths of said linear ridge-like retainers, said pushing screws are inserted in said additional through holes until their ends appear at said bottom of said uppermost frame and engage a respective linear ridge-like retainer to push said respective linear ridge-like retainers, thereby pushing the terminal pins of the IC against the conductors of the conductor pattern, wherein said rectangular intermediate frame further has linear ridge-like projections extending downwardly and parallel to said ridge-like retainers, and wherein said fixture frame further has slots for receiving a respective ridge-like projection of said rectangular intermediate frame when putting on said fixture frame.