Patent ID: 7675753

Claim:
A mounting apparatus for mounting a heat sink to a board, the mounting apparatus comprising: a first locking hole defined in the heat sink; a second locking hole defined in the board such that the second locking hole aligns with the first locking hole; a locking member comprising: a base, the base defining a hole, the base comprising two spaced elastic claws formed on a bottom surface and around the hole, the base being located on one side of the board with the elastic claws inserted through the first and second locking holes; and a rod comprising an expanded portion configured to slide in the hole and expand the elastic claws outwards to be larger than the second locking hole thereby locking the locking member to the board and securing the heat sink to the board; wherein the locking member further comprises a hollow sleeve and a sliding member, wherein the rod is mounted in the sliding member, the base is mounted below the sleeve, and the sleeve defines a positioning slot and comprises a conducting piece which defines a positioning cutout; the sliding member comprises a rib piece configured to slide along the conducting piece between the positioning slot and the positioning cutout; when the expanded portion is located among the claws, the rib piece slides in the positioning slot; when the expanded portion is located out of the claws, the rib piece slides in the positioning cutout.