US Patent 7794289 Circuit board connector assembly

A circuit board connector assembly includes two receptacle connectors each including a receptacle insulating housing and a plurality of receptacle terminals disposed in the receptacle insulating housing, and a plug connector disposed on the top of two adjacent receptacle connectors. Each of the receptacle terminals has a base board. Two opposite side edges of the base board extend towards a same direction to form a pair of clamping portions. The plug connector includes a plug insulating housing and a plurality of plug terminals integrated in the plug insulating housing. Each of the plug terminals has a connecting board molded in the plug insulating housing. Two opposite ends of the connecting board extend towards a same direction to form a pair of contact arms extending beyond a mating surface of the plug insulating housing to be electrically clamped by the corresponding two pairs of clamping portions of the two receptacle connectors.