Patent ID: 7684197
Filing Date: 2010-03-23
Classification: G11C,H01L,H05K

Abstract:
1. A memory module assembly comprising: a printed circuit board having a plurality of heat-generating electronic components mounted thereon; a first heat sink formed by stamping a metal sheet and comprising a first body attached on a side of the printed circuit board and a plurality of fins and openings alternately arranged on the first body; a second heat sink formed by stamping a metal sheet and comprising a second body attached on an opposite side of the printed circuit board, a pair of positioning tongues extending from opposite sides of the second body and a plurality of fins and openings alternately arranged on the second body; and a clamp comprising a connecting portion and a pair of elastic pressing portions extending from two ends of the connecting portion, a protrusion and a tab extending inwardly from a pair of opposite inner surfaces of the pair of pressing portions; wherein the pressing portions clamp the first and second heat sinks attached to the opposite sides of the printed circuit board and resiliently press the first and second heat sinks toward the heat-generating electronic components, the first heat sink engaging with the second heat sink via the positioning tongues of the second heat sink extending in the first heat sink; and wherein the first and second bodies each comprise a plurality of ribs extending from a surface thereof, the protrusion being located between two corresponding adjacent ribs of the second body, and a free end of the tab engaging a bottom of a corresponding rib of the first body.