Patent ID: 6477049
Filing Date: 2002-11-05
Classification: H01L,Y10T

Abstract:
A fixture assembly comprising:a heat sink; at least a first fixing unit securable on a main board, with the at least first fixing unit having at least a first pair of hooks formed at two opposite ends thereof; and a hold-down unit for each pair of hooks, with each hold-down unit having a U-shaped holder pivotally connected at two opposite sides of the heat sink in a pivot direction, with the U-shaped holder having two lower ends formed with two holding pawls corresponding to the pair of hooks of the fixing unit; with the hold-down unit having a shift lever connected with the U-shaped holder and pivotal in a direction perpendicular to the pivotal direction of the U-shaped holder, with the shift lever having a pressing end and a thumb grip end; whereby when the heat sink is assembled on the main board, the holding pawls of the U-shaped holder catch with the pair of hooks of the fixing unit, and the shift lever is turned to a locking position, in which the pressing end of the shift lever is pressed against the heat sink so as to force the heat sink to abut tightly against a CPU mounted on the main board.