Patent ID: 8342875

Claim:
A board-to-board connector, the board-to-board connector comprising: a first connector, the first connector including a first housing mounting therein first terminals, the first housing including: an island portion; concave insertion portions formed on both sides of the island portion; side wall portions formed on both sides of each concave insertion portion; first fitting guide portions connected to both ends in a longitudinal direction of each side wall portion; and concave guide portions formed in each first fitting guide portion, and a second connector configured to engage the first connector, the second connector including a second housing mounting therein second terminals configured to make contact with the first terminals, the second housing including: a recessed cavity portion in which the island portion is inserted; protrusive convex portions formed on both sides of the recessed cavity portion to be inserted in the concave insertion portions; and second fitting guide portions connected to both ends in the longitudinal direction of each protrusive convex portion to be inserted in the concave guide portions; wherein: each first fitting guide portion is provided with a protrusive sidewall portion configured to define both sides of each concave guide portion to be connected to each side wall portion and protrude out from a fitting face of each side wall portion; and the protrusive sidewall portion is provided with a sloped guide surface formed at an entrance end of each concave guide portion, the sloped guide surface forming a cut out of the protrusive sidewall portion, the plane of the cut out being oblique to a longitudinal direction of the first housing.