Patent ID: 7164583

Claim:
A mounting device for mounting a heat sink to a circuit board, the mounting device comprising: a locking member comprising a through hole and barbs formed at one end portion thereof for engaging with the circuit board; an operation member comprising a rod extending into the through hole of the locking member and being movable between first and second positions; and means for engaging the operation member and the locking member at said firm and second positions, wherein one end of the rod expands the barbs outwardly at said second position and releases the barbs at said first position, and wherein the engaging means comprises a pair of first bumps and a pair of second bumps formed in one of the operation member and the locking member, and a pair of slots formed in the other of the operation member and the locking member, the first bumps engaging in corresponding slots at said first position and the second bumps engaging in corresponding slots at said second position.