PLUG-IN CONNECTOR

PROBLEM TO BE SOLVED: To provide a plug-in connector with a structure of restraining reverse plug-in, with large-sizing restrained, and user-friendly. SOLUTION: The plug-in connector 1 is provided with a plug-in connection part 22 for supplying a plug with DC power to which the plug equipped with a plurality of round-rod power supply-side pins and a nearly rectangular peripheral wall covering the power supply side pins are connected in free detachment. The plug-in connection part 22 is provided with a peripheral wall insertion groove 23 formed nearly in a rectangular shape in plane view seen from front in a back-and-forth direction for the peripheral wall to be inserted into, and a surface part 24 surrounded by the peripheral wall insertion groove 23 formed nearly in a rectangular shape in plane view seen from front in a back-and-forth direction. The surface part 24 has power supply insertion holes 25A formed nearly in a circular shape for the power supply side pins to be inserted into arrayed in a right and left direction, and the power supply insertion holes 25A are fitted at an eccentric position nearer to a reference side 24b than a side 24c of an outer peripheral edge in an up-and-down direction to the reference side 24b of the outer peripheral edge. COPYRIGHT: (C)2011,JPO&INPIT