Retention mechanism

Claim 2

A retention mechanism for securing a CPU package on a circuit board comprising: a frame having a body defining a central channel for receiving a connector therein; a pair of retaining arms vertically formed at lateral sides of the frame for retaining a CPU package therein; a pair of bases formed at lateral sides of the frame, each base forming a pair of receiving holes; and a fixing device comprising: an engaging member having a base pad and a pair of locking silos formed on lateral sides of the base pad, each of the locking silos forming a hole, the locking silos being received in the corresponding receiving holes of the retention mechanism and corresponding holes of the circuit board; and a pair of locking screws each comprising a circular head and a post for insertion into the locking silo of the engaging member to provide an engaging force between the retention mechanism and the circuit board.

Claim 3

A retention assembly comprising: a base defining at least one receiving holes; a printed circuit board tightly positioned below the base and defining therein a locking holes in alignment with said receiving hole of the base; an engaging member defining a base pad and a locking silos extending therefrom with an internal hole therein, said locking silos defining an expanded head at a distal free end thereof; and a locking post defining a cap and a deflectable tip portion opposite to each other; wherein the locking silos extends through the locking holes of the printed circuit board and the receiving hole of the base successively with the base pad abutting against said printed circuit board and the expanded heads abutting against the base, and wherein the locking posts extends through the internal holes of the locking silos with the deflectable tip portions latchably engaged with the base pad around said internal holes for preventing backward movement of the locking posts within the internal holes, and with a portions thereof adjacent to the caps forcibly expanding outwardly the heads of the engaging members to latchably engage the base around the receiving hole for preventing backward movement of the engaging members within the receiving holes.

Claim 4

A retention assembly comprising: a base defining at least one receiving holes; a printed circuit board tightly positioned below the base and defining therein a locking holes in alignment with said receiving hole of the base; an engaging member defining a base pad and a locking silos extending therefrom with an internal hole therein, said locking silos defining an expanded head at a distal free end thereof; and a locking post defining a cap and a deflectable tip portion opposite to each other; wherein the locking silos extends through the locking holes of the printed circuit board and the receiving hole of the base successively with the base pad abutting against said printed circuit board and the expanded heads abutting against the base, and wherein the locking posts extends through the internal holes of the locking silos with the deflectable tip portions latchably engaged with the base pad around said internal holes for preventing backward movement of the locking posts within the internal holes, and with a portions thereof adjacent to the caps forcibly expanding outwardly the heads of the engaging members to latchably engage the base around the receiving hole for preventing backward movement of the engaging members within the receiving holes.