HEAT SINK ASSEMBLY RETAINER DEVICE

摘要

A retainer device for fixing a heat sink (2) on a chip (4) includes a mounting frame (31), a base plate (33) and a mounting lever (32). The heat sink has a number of upwardly extending cooling fins (21) and a pair of securing outwardly extending flanges (23). The mounting frame includes a pair of retaining plates (312) for pressing against the securing flanges and a pair of spring plates (311) connecting the retaining plates. The retaining plate defines a clip (318) for engaging with the heat sink and a latch 317 on each end thereof. The base plate defines four receiving projections (331), each of which defines a notch (332) for receiving the latch. The mouning lever defines a base pole (321) received between the cooling fins. The base pole defines at least one protrusion (323) for pressing against the spring plates and the securing flanges.