Patent ID: 8800639
Filing Date: 2014-08-12
Classification: F28D,H01L

Abstract:
1. A heat dissipation apparatus comprising: a plurality of fins, each fin defining a through hole therein; a collar extending from each fin at an edge of the through hole, the collar inclining toward a center of the through hole, an inner diameter of the collar gradually decreasing along a direction away form the fin form which the collar extends; a heat pipe, a diameter of the heat pipe being larger than a minimum inner diameter of the collar when the collar in a natural state, when the heat pipe extends through the through hole of the fin, the collar being pushed by the heat pipe to expand outwardly, so that the heat pipe intimately contacting an inner face of the collar; and a supporting bracket located at a bottom of the fins, the supporting bracket defining a through hole, the heat pipe extending through the through hole of the supporting bracket; wherein the supporting bracket is formed by bending a metal plate and comprises a connecting portion, and a pressing portion extending upwardly then outwardly from a side of the connecting portion, the through hole of the supporting bracket is defined in the pressing portion; and wherein the pressing portion comprises an upright portion connecting the connecting portion and a horizontal portion, the upright portion defining an air hole therein for airflow flowing through, a resilient sheet extending slantwise and upwardly from the horizontal portion, one of the fins elastically contacting the resilient sheet.