Retention device

Abstract

A retention device for retaining a combination of a daughter card and a heat sink mounted on the daughter card to an electrical connector comprises a pair of retention mechanisms positioned on opposite ends of the electrical connector. Each retention device includes a base and a wall upwardly extending from the base. The wall defines a pair of vertical grooves which divide the wall into a pair of sidewall portions and a central wall portion. A pair of central blades and a pair of side blades inwardly extend from the central wall portion and the sidewall portions, respectively. The central wall portion of each retention mechanism forms a push bar at a free end thereof. The central wall portion and the central blades of each retention mechanism are outwardly flexible under a lower force, relative to the sidewall portions, and then revert to lock the daughter card and the heat sink to the electrical connector. Furthermore, each central blade forms a stopper laterally extending from a bottom edge thereof toward a proximate side blade to exert an ejecting force on a bottom edge of the heat sink when the central wall portion is deflected outward during ejection of the daughter card.