Patent ID: 7567439

Claim:
A heat dissipation device comprising: a heat sink comprising a base adapted for contacting a heat-generating component; a retention module adapted for being located around the heat-generating component, the retention module comprising a pair of supporting portions at two opposite sidewalls thereof and a positioning block being positioned above one of the supporting portions; and a rotatable fastener rotatably connected to the retention module at a position opposite the positioning block and having a pressing portion being movable relative to the retention module between unlocked and locked positions; wherein at the locked position the base of the heat sink rests on the supporting portions of the retention module with an end portion of the heat sink being pressed by the positioning block and an opposite end portion of the heat sink being pressed by the pressing portion of the rotatable fastener, and at the unlocked position, the rotatable fastener is rotated to a position wherein the pressing portion is moved away from the opposite end portion of the heat sink; wherein the rotatable fastener comprises an actuating portion extending in the pressing portion and securely connected therewith and the retention module forms at least one pivot tab with at least one pivot hole defined therein, and wherein the actuating portion is rotatably received in the at least one pivot hole; and wherein the rotatable fastener comprises a bolt inserted in the pressing portion and the actuating portion to fasten the pressing portion to the actuating portion.