Retention device

An electrical system comprising:

• an electrical connector including a dielectric housing and a plurality of contacts received in the housing;
• a pair of retention mechanisms positioned on opposite ends of the electrical connector, each retention mechanism including a base and a wall upwardly extending from the base, the wall forming a pair of blades in an inner surface thereof, at least one of the blades forming a stopper extending toward the other blade;
• and
• a combination of a daughter card and a heat sink, the heat sink being attached to the daughter card, the combination being positioned between the retention mechanisms, the daughter card being electrically connected to the contacts of the connector, opposite side edges of the heat sink being accommodated between the blades, the wall of each retention mechanism being outwardly deflectable to upwardly move the stopper to abut against a bottom edge of the heat sink, thereby ejecting the combination out of the connector.

An electrical system comprising:

• a printed circuit board;
• a connector mounted on the printed circuit board;
• a pair of retention devices mounted on the printed circuit board and positioned by two ends of the connector;
• a combination of a daughter board and an associated heat sink mounted thereon, being positioned in a space defined among said pair of retention devices and the connector, a bottom edge portion of the daughter board being mechanically and electrically connected to the connector;
• each of said retention devices defining first means for latchably holding the heat sink in position and second means for releasably withdrawing said combination from the connector, said first means including a pair of blades for sandwiching the heat sink therebetween, and a bottom edge around a push bar for latchable receipt within a notch of the heat sink, said second means including a deflectable central wall on which the push bar and at least one of the said pair of blades is formed, and a stopper formed at a bottom edge of said one of the pair of blades to abut against the heat sink, so that by deflecting the central wall, the bottom edge of the push bar may leave the notch of the heat sink, and the stopper may upwardly move to urge heat sink and the associated daughter board to leave away the connector thereunder.