Patent ID: 7362573

Claim:
A heat dissipation device comprising: a heat sink comprising a heat conducting core and a plurality of fins extending from the core, the core having an extension portion for contacting a heat generating device; and a locking device comprising a locking plate defining an opening accommodating the extension portion of the core of the heat sink therein and having a plurality of locking arms extending from the plate, a plurality of cutouts circumferentially surrounding and communicating with the opening being defined in the plate; wherein, the extension portion of the core of the heat sink is punched/pressed to press the plate of the locking device toward the heat sink and have portions thereof engaged in the cutouts of the plate of the locking device, whereby the locking device is stably fixed to the heat sink; and wherein each locking arm defines a fixing aperture adjacent to a distal end thereof, a locking sleeve extending away the heat sink from the arm under the fixing aperture.