Patent ID: 7489511
Filing Date: 2009-02-10
Classification: H01L,Y10T

Abstract:
1. A heat sink clip comprising: a pin having a head at one end thereof and a clamping portion at another end thereof, the pin including an upper section and a lower section having a diameter smaller than that of the upper section; and a spring disposed around said pin and between the head and the clamping portion of the pin, wherein an abutting portion extends radially outwardly from an outer surface of the lower section of the pin, and the abutting portion is in the form of an annular flange, the abutting portion being adapted for engaging with a bottom surface of a heat sink when the pin is mounted to the heat sink with the spring being compressed between the head and the heat sink; wherein said clamping portion has an anchor-shaped cross-section, and comprises a pair of hooks located at two opposite sides of the pin, a groove being formed between each hook and the lower section of the pin; and wherein an abutting surface is formed on a top end of each hook, and a tab extends upwardly from a lateral side of the abutting surface, the abutting surface being adapted for engaging with a bottom surface of a circuit board when the clip is inserted through a hole of the circuit board and the tab being adapted for engaging with an inner surface of the hole when the abutting surface engages with the bottom surface of the circuit board.