Patent ID: 7134899

Claim:
An electrical connector assembly comprising: a first electrical connector including a first housing that has an insertion end portion extending along a direction and formed with a receiving space that is defined by an inner wall surface, and a set of conductive contacts disposed in said receiving space and mounted on said inner wall surface; a second electrical connector including a hollow second housing that has an opening and that permits extension of said insertion end portion of said first housing thereinto via said opening, a terminal-mounting seat disposed in said second housing and received fittingly in said receiving space in said insertion end portion of said first housing when said insertion end portion of said first housing is inserted into said second housing, and a set of conductive terminals mounted on said terminal-mounting seat and contacting electrically and respectively said conductive contacts of said first electrical connector when said insertion end portion of said first housing is inserted into said second housing; and a fastening unit provided on said first and second housings for preventing relative movement between said first and second housings when said insertion end portion of said first housing is inserted into said second housing so as to maintain electrical contact between said conductive contacts of said first electrical connector and said conductive terminals of said second electrical connector; wherein said fastening unit includes: a fastener-mounting seat mounted fixedly on said first housing, disposed on one of top and bottom sides of said first housing, and having an engagement surface, which is formed with a through hole that extends through said fastener-mounting seat; a coupling member mounted fixedly on said second housing, disposed on one of top and bottom sides of said second housing that corresponds to said one of said top and bottom sides of said first housing, and having an engagement surface, which is formed with a thread hole; and a fastener mounted movably and rotatable in said through hole in said fastener-mounting seat and having an operating end portion extending outwardly of said fastener-mounting seat, and a threaded coupling end portion opposite to said operating end portion, said fastener being movable relative to said fastener-mounting seat toward said coupling member such that said threaded coupling end portion has a maximum extension extending outwardly of said engagement surface of said fastener-mounting seat and having a length smaller than that of said insertion end portion of said first housing, said operating end portion being operated so as to enable said coupling end portion to engage said thread hole in said coupling member when said insertion end portion of said first housing is inserted into said second housing.