Slide members 43 are provided on the upper and lower portions of a hood section 27 of a male connector 25 so that the slide members 43 are movable in Y direction orthogonal with X direction in which the male connector 25 is engaged with a female connector 35. Guide grooves which are slanted in mutually opposite directions in the sliding direction are provided on the inner surface side at which the slide members 43 face each other. Guide pins 37a and 37b guided to the guide grooves are provided on the upper and lower portions of the female connector 35. An operation lever 47 which can rotate around rotation supporting pins 57a is provided at one end of the upper and lower slide members 43. Since the upper and lower slide members 43 move in mutually opposite directions by the rotation of the operation lever 47, the female connector 35 is drawn into the hood section 27 of the male connector 25 when the slide members 43 and 45 slide in the mutually opposite directions.