Patent ID: 7068513
Filing Date: 2006-06-27
Classification: H01L

Abstract:
1. A heat sink fixing apparatus comprising: a printed circuit board defining a plurality of through apertures therein; a back plate attached on a bottom surface of the printed circuit board, the back plate comprising a plurality of poles corresponding to the through apertures; and a retention module for carrying a heat sink thereon, the retention module being attached on a top surface of the circuit board, the retention module comprising a plurality of pairs of support portions corresponding to the poles and the through apertures respectively; wherein the poles extend through the through apertures and engage the support portions to render the back plate and the retention module to be secured on the printed circuit board, and wherein each of the support portions has an upper horizontal platform with which a corresponding pole engages, and a lower inclined plane inclining outwardly along a bottom to top direction of the retention module; and wherein the retention module comprises a plurality of hollow posts depending therefrom, and the support portions are formed on inner walls of the posts.