Patent ID: 8398425

Claim:
A board-to-board connector, the board-to-board connector comprising: a first connector, the first connector including a first housing mounting thereon first terminals, the first housing including: an island portion formed, on an upper side thereof, with a fitting face; 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 arranged at both ends in a longitudinal direction of each island 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 thereon 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 have fitting faces formed thereon and provided to be inserted in the concave insertion portions; and second fitting guide portions arranged at both ends in the longitudinal direction of the recessed cavity portion to be inserted in the concave guide portions; wherein: at least part of an entrance end portion of each of the concave guide portions is provided with a sloped guide surface formed therein, each sloped guide surface comprising an anterior sloped surface portion having a defined gentle slope and a posterior sloped surface portion having a defined steep slope with respect to the fitting face of the first connector, the anterior sloped surface portion and the posterior sloped surface portion sharing a common edge; and due to insertion of the second fitting guide portions in the concave guide portions so that portions of the second fitting guide portions are brought into abutting contact with the sloped guide surfaces, the first terminals and the second terminals are spaced apart from each other in a state where the fitting face of the first housing and the fitting faces of the second housing are even with each other.