FASTENER AND HEAT DISSIPATION DEVICE USING THE SAME

摘要

A fastener ( 20 ) comprises a fixing post ( 21 ) and a washer ( 25 ). The fixing post has a locking tongue ( 213 ) and a slot ( 2110 ) just above the locking tongue. The washer defines a hole ( 253 ) and has at least one tab ( 255 ) near the hole. The fixing post extends through a heat sink ( 100 ) and engages with the washer by fitting the washer into the slot, whereby the washer is sandwiched between the locking tongue and a base ( 12 ) of the heat sink and the fixing post is securely attached to the heat sink. The tab engages with a straight side of the locking tongue. The fixing post is used for threadedly engaging with a screw thereby attaching the heat sink to an electronic device mounted on a printed circuit board.