Fastening device and heat sink assembly using the same

摘要

A heat sink assembly ( 100 ) includes a fastening device ( 20 ) and a heat sink ( 10 ). The fastening device includes a sleeve ( 24 ), a pin ( 22 ) received in the sleeve and a biasing means ( 26 ) disposed around the sleeve. The sleeve includes a locking portion ( 246 ) formed at a bottom end thereof. The pin includes an engaging portion ( 226 ) formed at a bottom end thereof. At least a slot ( 248 ) is defined through the locking portion of the sleeve ( 24 ). The engaging portion extends outwardly through the slot and resiliently abuts against a bottom surface of the heat sink. The biasing means is slightly deformed between a top end of the fastening device and a top surface of the heat sink, thereby keeping the fastening device in a vertical position with respect to the heat sink.