Patent ID: 7445466

Claim:
A board-to-board connector assembly, comprising: a receptacle having a receptacle housing, having a base, two first sidewalls protruding upward from two opposite sides of the base, and two second sidewalls protruding upward from two opposite ends of the base, a recess formed among the base and the sidewalls, a plurality of arrayed first contacts mounted in the receptacle housing, and two first fixing contacts, each first fixing contact having a first fixing portion fixed in a corresponding second sidewall, the middle of the first fixing portion extending upward then bending downward to form an elastic portion, the elastic portion extending to form a contacting portion extending into the recess of the receptacle housing; and a plug having a plug housing, received in the recess of the receptacle housing, a plurality of arrayed second contacts mounted in the plug housing for electrically connecting the corresponding first contacts of the receptacle, and two second fixing contacts, each second fixing contact having a second fixing portion fixed in two opposite ends of the plug housing, the contacting portion of the first fixing contact being against the outside of the second fixing portion; a middle of an inside of the second sidewall defines a first fixing groove for fixing the first fixing portion of the first fixing contact, the first fixing groove penetrates an inner wall of the second sidewall, a middle of two ends of the plug housing define a second fixing groove respectively for fixing the second fixing contact therein, each second fixing groove penetrates a respective end of the plug housing to communicate with the first fixing groove of the receptacle housing; a middle of the base protrudes upward into the recess to form a rib extending longwise, two ends of the rib are apart from the corresponding second sidewalls, a space is formed between the rib and the second sidewall where the first fixing contact is against the second fixing contact.