Patent Number: 6,480,387

Title: Heat sink assembly

Abstract: A heat sink assembly includes a heat sink (10), a plurality of standoffs(20), and a plurality of springs (40). The heat sink includes a base (12)defining a plurality of through apertures (16). Each standoff includes ahead (24), and a body (22) extending through a corresponding throughaperture. The springs are placed over the corresponding bodies and locatedbetween the heads and the base. The body has a hollow part (26) forfixedly receiving a bolt (45). The hollow part includes an expandableportion (28) at a bottom end thereof, a smooth guiding portion (31) abovethe expandable portion, and a threaded portion (33) above the guidingportion. The guiding portion guides the bolt in the standoff to facilitatethe bolt engaging in the threaded portion. The expandable portions areexpanded to thereby combine the heat sink, standoffs and springs as asingle unit.

Inventors: Lee; Tsung-Lung (Tu-Chen, TW), Lai; Cheng-Tien (Tu-Chen, TW), Zhang; Zili (Shenzhen, CN)


International Classification: H01L 23/34 (20060101); H01L 23/40 (20060101); H05H 007/20 ()

Expiration Date: 11/12014