Electrical connector with forward and rearward waterproof sealing

1. An electrical connector, comprising:

a terminal base which comprises an insulative body and a plurality of conductive terminals fixed to the insulative body, the insulative body comprising a base and a tongue extended forwardly from the base, the base being provided with a plurality of latch projections;

a metal inner shell which encloses to form an accommodating cavity passing through from front to back and used to accommodate the terminal base;

a metal fixing member which comprises a stopping ring portion and two fixing portions bending from both sides of the stopping ring portion, the stopping ring portion being provided with a through hole for the tongue to pass therethrough, the fixing portions being provided with locking holes engaging with the latch projections of the terminal base, and the fixing portions being fixed to the metal inner shell; and

a metal outer shell which is fixed to an outer side of the metal inner shell and is formed with a plurality of soldering legs extending downwardly,

wherein the stopping ring portion is a flat plate provided with the through hole in the middle, the stopping ring portion is uprightly provided on a vertical plane perpendicular to a front-rear direction, and a rear side surface of the stopping ring portion is attached to a front side surface of the base.

2. The electrical connector according to claim 1 , wherein the fixing portions bend backwardly and extend horizontally from a top side and a bottom side of the stopping ring portion, the locking holes are penetratingly provided at a corner between the stopping ring portion and the fixing portions.

3. The electrical connector according to claim 1 , wherein the metal fixing member is formed by integrally punching from a metal plate, and is fixed to the metal inner shell by laser welding.

4. The electrical connector according to claim 3 , wherein the through hole of the metal fixing member is slightly larger than a contour of the tongue viewed from the front, so that the metal fixing member could be sheathed and fixed backwardly to the base from the front of the tongue.

5. The electrical connector according to claim 1 , wherein two protruding edges protrude outwardly respectively from left and right sides of the stopping ring portion, the two protruding edges can correspondingly abut against an inner side surface of the metal inner shell.

6. The electrical connector according to claim 1 , wherein the metal inner shell is a hollow ring structure without an engaging slit, the metal inner shell is formed with a plurality of retaining projections protruding inwardly for retaining a mating connector.

7. The electrical connector according to claim 6 , the electrical connector further comprises a sealing ring provided around an outer periphery of a front end of the metal inner shell, a flange rising outwardly is formed to surround the front end of the metal inner shell, a front end of the sealing ring is abutted by the flange.

8. The electrical connector according to claim 1 , the insulative body further comprises a protruding portion extending backwardly from the base, the protruding portion protrudes backwardly from the accommodating cavity; the metal outer shell surrounds an outer periphery of the protruding portion.

9. The electrical connector according to claim 8 , wherein the protruding portion of the insulative body is provided with an glue-filling channel passing through from top to bottom at a position close to the base, the conductive terminals are embedded in the insulative body and partially exposed to the glue-filling channel; wherein a waterproof glue is applied to a rear end surface of the base of the insulative body, the waterproof glue is filled in the glue-filling channel and adheres the metal inner shell, the insulative body and the conductive terminals so as to wholly seal a rear end of the accommodating cavity.