Patent ID: 7929296
Filing Date: 2011-04-19
Classification: H01L,Y10T

Abstract:
1. A fastening device for fastening a heat sink onto a base board, the base board having a first surface, a second surface, and at least two holes, the fastening device comprising: a first fastening member having at least four first engaging parts, the first fastening member being disposed on the first surface, each of the first engaging parts being embedded into the corresponding hole on the base board and being exposed out of the second surface; a second fastening member disposed on the second surface, the second fastening member having a first side member, a second side member adjacent to the first side member, a third side member opposite to the second side member, and a fourth side member opposite to the first side member, the first side member having at least two second engaging parts engaged with the corresponding first engaging parts, the second side member having a first pivoting hole, the third side member having a second pivoting hole; and a third fastening member disposed on the second surface, the third fastening member having a fifth side member, a sixth side member adjacent to the fifth side member, a seventh side member opposite to the sixth side member, and an eighth side member opposite to the fifth side member, the fifth side member having at least two third engaging parts engaged with the corresponding first engaging parts, the sixth side member having a first pivoting axle pivoted with the first pivoting hole, the seventh side member having a second pivoting axle pivoted with the second pivoting hole; wherein when the second fastening member engages with the corresponding first engaging parts via the second engaging parts, and the third fastening member engages with the corresponding first engaging parts via the third engaging parts, both the fourth side member of the second fastening member and the eighth side member of the third fastening member press the heat sink.