In a connector device, a female connector is fixedly mounted on a first base body, and a male connector 10 is mounted on a second base body which is swingable about a rotating axis with respect to the first base body, in such a manner that the male connector is loosely fitted in a guide, being displaceable in a direction perpendicular to the rotating axis, and is kept urged towards the rotating axis by urging means. Hence, the guide member of the male connector is engaged with a guide hole of the female connector while abutting against the wall surface, on the side of the rotating shaft, of the guide hole, which makes it possible to decrease the dimension L1 of the guide hole in the direction perpendicular to the rotating axis. That is, the connector device can be miniaturized.