Patent ID: 9111903
Filing Date: 2015-08-18
Classification: H01L

Abstract:
1. A heat dissipation device, comprising: a conductive plate defining a supporting portion through the conductive plate, the supporting portion defining a hole, an upper groove and a lower groove communicating with one another, the upper groove being located above and coaxial with the lower groove; and a fastener comprising a fastening element and an elastic element around the fastening element, the fastening element comprising a pole portion, a head portion formed at one end of the pole portion, an engaging portion formed at another opposite end of the pole portion, and a flange protruding from an outer periphery of the pole portion between the engaging portion and the head portion, the flange having a diameter smaller than a diameter of each of the hole and the lower groove, and larger than a diameter of the upper groove of the supporting portion, the pole portion having a diameter smaller than that of the upper groove, the flange extending through the hole from a top side of the conductive plate, whereby the elastic element and the flange are respectively located at top and bottom sides of the conductive plate, the fastening element being then moved horizontally towards the upper groove, whereby the pole portion enters the upper groove, the flange abuts the bottom side of the conductive plate at a periphery of the upper groove and being received in the lower groove, the elastic element elastically abuts against the top side of the conductive plate at the periphery of the upper groove; wherein a projection extends upwardly from the top side of the conductive plate at the periphery of the upper groove, the projection having a diameter smaller than an inner diameter of the elastic element, the elastic element configured to be sleeved on the projection.