Patent ID: 7518874
Filing Date: 2009-04-14
Classification: H01L,Y10T

Abstract:
1. A heat sink assembly for dissipating heat generated by an electronic component, the heat sink assembly comprising: a heat sink having a base and a plurality of fins extending from the base, a plurality of channels being defined between the fins; a clip assembly for resiliently clamping the heat sink on the electronic component with adjustable spring force, the clip assembly comprising: a pair of supporters each having a pivot hole defined therein and deviated from a center thereof and a retaining slot located distant from the retaining hole; a clip pivotally connected to the supporters, the clip comprising a main body extending through the heat sink, a pair of arms extending from opposite ends of the main body and pressing the heat sink towards the electronic component, the arms being pivotally received in the slots of the supporters; and a movable fastener pivotally extending in the retaining holes of the supporters and received in a corresponding channel to engage with the fins of the heat sink; wherein the clip assembly is capable of providing appropriate spring force acting on the heat sink towards the electronic component when the movable fastener is moved relative to the base of the heat sink and a spring force generated by the arms of the clip is adjusted by rotation of the supporters on the base of the heat sink.