Electrical connector with improved waterproof performance

A waterproof electrical connector comprising:

• an insulative housing having a base portion and a mating tongue, the mating tongue comprising a stepped portion extending from the base portion and a tongue portion extending from the stepped portion in an inserting direction of the connector engaged with a mating connector, the stepped portion defining a front face, the base portion defining a rear face opposite to the front face in the inserting direction;
• a plurality of terminals retained in the insulative housing comprising contacting portions exposed upon the tongue portion, connecting portions buried in the stepped portion and in the base portion and soldering tails extending out of the base portion;
• and
• a sealing member;
• wherein the sealing member is filled around the connecting portions of the terminals, the sealing member is located behind the front face of the stepped portion and in front of the rear face of the base portion and is not sloped over an outer periphery of the insulative housing connecting with the front and rear faces, wherein the sealing member is a flat plate-like structure formed by solidification of glue, wherein the electrical connector comprises a terminal module assembly and an injection molding body molded on the terminal module assembly, the terminal module assembly comprises an insulative portion and the plurality of terminals retained in the insulative portion, the insulative portion defining a groove recessed from a front face thereof, the sealing member is formed by solidification of glue injected into the groove, the injection molding body is injected on the front face of the insulative portion to form the insulating housing, wherein the terminal module assembly comprises two sub-terminal modules and a shielding plate sandwiched between the two sub-terminal modules, wherein the injection molding body encloses a part of the connecting portions of the terminals to form the stepped portion, wherein the base portion comprises a first base portion connecting the stepped portion and a second base portion located behind the first base portion, the second base portion is larger in size than the first base portion, and the sealing member is located at the second base portion, wherein the electrical connector comprises a metallic shell fixed to the first base portion, the metal shell surrounds the mating tongue to define a mating cavity, the outer periphery of the first base portion is provided with a first sealing ring, the first sealing ring is pressed between the first base portion and the metallic shell, wherein the electrical connector further comprises an insulating cover injected molding on the outer periphery of the metallic shell and the outer periphery of the second base portion, and a second sealing ring is provided at a joint between the metallic shell and the second base portion, the second sealing ring is pressed between the metallic shell and the insulating cover.