Patent ID: 7074067

Claim:
A card edge connector for receiving a card module with two notches in the opposed side edges, comprising an insulative housing defining a central slot therein; a plurality of contacts positioned beside said central slot, and a pair of deflectable latching arms disposed at two opposite ends of the insulative housing, each of said latching arm having a locking portion with a guidance surface and a restraint portion for engaging with the notches of the card module, the restraint portion located adjacent to the locking portion and nearer to a distal free end of the latching arm than the locking portion, and the latching arms being outwards deflected only when the side edges of the card module which is inserted into the central slot in a correct position directly engage with the guidance surfaces of the locking portions during downwardly rotation; wherein a top surface of the restraint potion is as high as or higher than an upper end of the guidance surface of the locking portion; wherein the locking portion and the restraint portion are projecting from inner sides of the latching arms over the determined plane; wherein the locking portion has a retaining surface for engaging a top surface of the card module to hold the card module in the determined plane; wherein a reinforcing member attached to the latching arm; wherein the reinforcing member comprises a stop tag cover the restraint portion and a guidance stud over the locking portion in a vertical direction from the top; wherein each latching arm comprises a plastic portion and a metal portion beside said plastic portion; wherein the plastic portion integrally formed on the insulative housing; wherein the metal portion further comprises a solder pad for mounting to a printed circuit board on which the connector is seated; wherein two restriction tags extend downwardly from the main body for restraining the left-to-right direction of the plastic portion; and a stop tag and a guidance stud adjacent to the stop tag extend from the upper side of the main body, and the stop tag and the guidance stud respectively cover the guiding section and the projecting section of the latching arm; the stop tag is extending in vertical direction of the guidance stud and the main body's direction; during this downward rotational movement of the card module, if the card module is positioned in the correct position, the side edges of the card module around the notches directly engage and impose the forces upon the guidance studs of the metal portions of the latching arms while without direct significant improper scrapping force imposed upon the locking lug; the metal portion together with the plastic portion can smoothly outwards deflected, the notches of the card module properly passed the stop tags, after the side edges slide off the guidance studs, the latching arms deflected back and the card module rotated downwardly to the final horizontal position.