Patent ID: 7349217
Filing Date: 2008-03-25
Classification: H01L

Abstract:
1. An IC socket assembly having a plurality of electrical contacts, an insulative socket housing for housing the plurality of electrical contacts, a heat sink for dissipating heat generated by an IC package, which is mounted on an IC package mounting surface of the socket housing and a fixing member for fixing the heat sink to the socket housing, the fixing member comprising: a frame having mounting legs extending downward through apertures of a circuit board, the frame being mounted on a first surface of the circuit board, on which the socket housing is mounted; a back plate, which is mounted on a second surface of the circuit board opposite the first surface, having engaging arms, which are inserted through the apertures of the circuit board and engage the frame; a pair of loading beams, which are fixed to the engaging arms; a pair of levers, each lever being axially supported by a loading beam; and a cam portion having a rotatable eccentric portion for varyingly pressing against a flange portion of the heat sink upon rotation of the eccentric portion and being located on at least one of the levers such that movement of the lever relative to the loading beam causes the cam portion to press against a flange portion of the heat sink, thereby urging the heat sink toward the socket housing.