US Patent 7134896 Latch of a card edge connector

A latch of a card edge connector comprising: an elongated body, having a outside wall with an extending wall, wherein a trench is formed between the outside wall and the extending wall, and the extending wall has an opening and a pin; and a latching device, having a knot and a pinhole used for joining the opening and the pin of the extending wall respectively, and having at least a buckle and a chuck, the buckle is used for locking a circuit card when a side part of the circuit card is pressed down the buckle, then the chuck is used for driving the buckle moving and releasing the circuit card.