Patent ID: 7252549

Claim:
A connector comprising: a receptacle mounted on a substrate wherein the receptacle has a shield case of a generally angulate tubular shape having a bottom surface that faces the substrate when the receptacle is mounted thereon wherein the shield case of the receptacle has connection terminals therein; a plug connected to the receptacle wherein the plug has a shield case of a generally angulate tubular shape having a bottom surface wherein the shield case of the plug has connection terminals therein wherein the shield case of the plug is configured so that the shield case of the plug is inserted into the shield case of the receptacle when the plug is connected to the receptacle wherein the connection terminals of the plug are electrically connected to the connection terminals of the receptacle; and erroneous insertion preventing and guiding means provided in the bottom surface of the shield case of the receptacle and the bottom surface of the shield case of the plug for preventing any occurrence of erroneous insertion therebetween when the plug is connected to the receptacle while properly guiding the shield case of the plug into the shield case of the receptacle wherein the erroneous insertion preventing and guiding means has at least one tongue portion formed in one of the bottom surfaces of the shield case of the receptacle and the shield case of the plug and a recess corresponding to the tongue portion and formed in the other bottom surface of the shield case of the receptacle or the shield case of the plug wherein the tongue portion is fitted into the recess when the plug is connected to the receptacle wherein the tongue portion is formed in the bottom surface of the shield case of the receptacle and the recess is formed in the bottom surface of the shield case of the plug wherein the tongue portion is formed into a generally rectangular shape by cutting away left and right sides of the bottom surface of the shield case of the receptacle substantially up to a middle part thereof along a plug insertion direction.