Patent ID: 7667970
Filing Date: 2010-02-23
Classification: H01L

Abstract:
1. A heat sink assembly for removing heat from two heat generating-components mounted on a printed circuit board, comprising: a first heat sink comprising a base contacting with one of the heat generating-components and a plurality of fins arranged on the base; a second heat sink contacting with the other heat generating-component, the second heat sink having a first shoulder extending toward the first heat sink from a lateral side thereof and superposed onto the base of the first heat sink; a plurality of poles mounting the first and second heat sinks onto the heat generating-components and each having a head at a top end thereof; and a double-layer spring comprising an outer spring and an inner spring interconnected each other at a top thereof; wherein one of the poles wearing the double-layer spring extends through the first shoulder of the second heat sink and the base of the first heat sink, the outer spring is compressed between the head of the pole and the first shoulder, the inner spring is compressed between the head of the pole and the base of the first heat sink under the first shoulder.