Patent ID: 6507491
Filing Date: 2003-01-14
Classification: H01L

Abstract:
A pull/latch type fixing device for improving heat-radiating capacity of an integrated circuit chip, the pull/latch type fixing device comprising:(a) a latch seat mounted on a circuit board, the latch seat including a plurality of latch holes formed on a periphery thereof; (b) a heat-radiating fin body having an upper surface and a lower surface, said heat-radiating fin body being bridged over the latch seat, wherein each of two sides of the upper surface of the heat-radiating fin body has formed thereon a latch groove; and (c) a fastener unit including: (1) a locating frame inserted in each of the latch grooves of the heat-radiating fin body, wherein each of two ends of the locating frame includes a downward extending lateral wall; (2) a latch frame mounted between each of the latch grooves and a respective one of the locating frames, wherein each of two ends of each of the latch frames includes a downward extending latch arm, each of the latch frames being formed with at least one projecting pivot seat, the pivot seat passing through a respective one of the locating frames; and (3) at least one pull lever, wherein a first end of the pull lever is pivotally mounted in a respective one of the pivot seats of each of the latch frames, the pull lever including a pair of cam plates extending radially upward from two sides of the first end of the pull lever, the cam plates being pivotally fitted in the pivot seat of the respective one of the latch frames and engaging a respective one of the locating frames, whereby the pull lever is operated to pull the latch frame upward to cause each of the latch arms thereof to engage in a respective one of the latch holes of the latch seat, the heat-radiating fin body being forced oppositely downward, whereby the lower surface of the heat-radiating fin body is firmly applied to the chip to enhance the heat-radiating efficiency thereof.