Patent ID: 7663887
Filing Date: 2010-02-16
Classification: H01L

Abstract:
1. A heat dissipation device assembly comprising: a heat dissipation device adapted to be positioned above a printed circuit board, the heat dissipation device having a plurality of posts extending therefrom; and a retainer device adapted to be positioned below the printed circuit board, the retainer device comprising: a back plate having an opening defined therein; and a crank comprising a pressing portion protruding into the opening, two pivot arms extending from opposite ends of the pressing portion and pivotably connected to the back plate, and a handle extending one end of one of the pivot arms; wherein the posts are adapted to extend through the printed circuit board and engage with the back plate to pre-assemble the heat dissipation device on the printed circuit board; wherein the handle is pushed to rotate between a released position, in which the printed circuit board is loosely held between the heat dissipation device and the back plate, and a locked position, in which the pressing portion pushes the printed circuit board toward the heat dissipation device to cause the printed circuit board to be firmly held between the heat dissipation device and the back plate, and an electronic component on the printed circuit board to have an intimate contact with the heat dissipation device; and wherein the back plate comprises two latches located at opposite sides of the opening, each latch having a pivot hole defined therein, the pivot arms being pivotably received in the pivot holes with the pressing portion protruding into the opening.