CN108270106B - Electric connector and manufacturing method thereof - Google Patents

Abstract

An electric connector comprises a terminal module with an insulating body and a terminal fixed on the insulating body, a shielding shell covering the terminal module to form a containing space, wherein the shielding shell is cylindrical and penetrates in the front-back direction, the shielding shell comprises a cylindrical outer wall surface, and the electric connector further comprises a shell which is integrally formed on the cylindrical outer wall surface and is tightly attached to the shielding shell. Because the shell and the shielding shell are integrally formed, no gap exists between the shell and the shielding shell, and glue can be prevented from overflowing from the space between the shell and the shielding shell when glue is dispensed, so that the glue overflowing is prevented.

Description

Electric connector and manufacturing method thereof

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector and a method for manufacturing the same, and more particularly, to an electrical connector capable of preventing glue overflow and preventing water and a method for manufacturing the same.

[ background of the invention ]

In the prior art, an electrical connector includes a terminal module, a shielding housing sleeved outside the terminal module, and a housing sleeved outside the shielding housing, where the terminal module includes an insulating body and a plurality of terminals fixed in the insulating body, the housing is assembled to the shielding housing, and glue is applied to the shielding housing at last, but a gap exists between the housing and the shielding housing, and the glue easily overflows from the gap between the housing and the shielding housing.

Therefore, it is necessary to provide an electrical connector and a method for manufacturing the same, which has a good waterproof effect and prevents the occurrence of the glue overflow.

[ summary of the invention ]

The invention aims to provide an electric connector which can prevent water and glue overflow and a manufacturing method thereof.

In order to achieve the above purpose, the present invention can be implemented by adopting the following technical scheme one: an electric connector comprises a terminal module with an insulating body and a terminal fixed on the insulating body, a shielding shell covering the terminal module, wherein the shielding shell is cylindrical and penetrates in the front-back direction to form a containing space for containing the terminal module, the shielding shell comprises a cylindrical outer wall surface, and the electric connector further comprises a shell which is integrally formed on the cylindrical outer wall surface and is tightly attached to the shielding shell.

Further, the insulating body comprises a base fixed on the shielding shell and a tongue plate protruding forwards from the base and forming a butt joint cavity with the accommodating space, the base comprises a base part and a glue blocking part protruding from the periphery of the rear end of the base part, the shell comprises an accommodating cavity annularly arranged on the cylindrical outer wall surface of the shielding shell and an accommodating cavity positioned behind the accommodating cavity and having an inner circumference size larger than that of the accommodating cavity, and a step surface for the glue blocking part to abut against is formed between the accommodating cavity and the accommodating cavity.

Further, the shell further comprises a first inner peripheral wall attached to the cylindrical outer wall surface of the shielding shell, a second inner peripheral wall located at the front end of the first inner peripheral wall and having an inner peripheral size smaller than that of the first inner peripheral wall, and a third inner peripheral wall located at the rear end of the first inner peripheral wall and having an inner peripheral size larger than that of the first inner peripheral wall and forming the accommodating cavity, wherein the front end of the shielding shell abuts against a step formed at the intersection of the first inner peripheral wall and the second inner peripheral wall.

Further, the rear end of the shielding shell extends out of the first inner peripheral wall to form a protruding part, and a gap is formed between the protruding part and the third inner peripheral wall.

Further, a relief groove is arranged at the periphery of the rear end of the base corresponding to the protruding part for the protruding part to protrude.

Furthermore, the electric connector further comprises a support structure fixed on the inner walls of the two sides of the rear end of the shell, the support structure is made of metal materials, and the support structure and the shell are integrally injection-molded.

Furthermore, both sides of the rear end of the shielding shell are provided with side arms extending backwards, and the support structure comprises an embedded part fixedly held in the shell and a fixed arm extending out of the shell along the embedded part, positioned at the outer sides of the side arms and fixedly held on the side arms in a welding mode.

Further, keep off gluey portion including being located the first fender of basal portion rear end top is glued the portion and is located the second fender of basal portion rear end below is glued the portion, the second is kept off gluey portion stretch suddenly in basal portion lower surface and left and right sides, first fender is glued the portion stretch suddenly in basal portion upper surface and form in the left and right sides and give way the fixed arm with the breach of stepping down of side arm.

Further, the shell further comprises a sol space which is positioned behind the containing cavity and has an inner peripheral dimension larger than that of the containing cavity.

In order to achieve the above object, the present invention can be achieved by a second technical solution, which is a method for manufacturing an electrical connector, comprising the steps of: providing a shielding shell which is cylindrical and penetrates in the front-back direction to form an accommodating space; providing a shell which is integrally formed on the cylindrical outer wall surface of the shielding shell and is tightly attached to the shielding shell; providing a terminal module, wherein the terminal module comprises an insulating body and a terminal integrally formed with the insulating body; the terminal module is arranged in an integrally formed shell and a shielding shell from back to front, and a sol space is formed at the rear ends of the shell and the terminal module; and providing a waterproof material, and injecting the waterproof material into the sol space so as to form a waterproof rubber plate for sealing the rear end of the terminal module.

Compared with the prior art, the shielding shell and the shell are integrally formed, so that no gap exists between the shielding shell and the shell, and when glue is dispensed, glue cannot enter the electric connector through the space between the shielding shell and the shell, so that the glue overflow condition is prevented.

[ description of the drawings ]

Fig. 1 is a perspective view of the electrical connector of the present invention connected to a circuit board.

Fig. 2 is a perspective view of the electrical connector of the present invention when it is not connected to a circuit board.

Fig. 3 is a perspective view of the housing, the shielding case and the terminal module which are integrally formed.

Fig. 4 is a perspective view of fig. 3 viewed from another direction.

Fig. 5 is an exploded perspective view of a terminal in the terminal module of the connector of the present invention.

Fig. 6 is an exploded perspective view of the terminal module, the shield shell and the housing of the electrical connector.

Fig. 7 is an exploded perspective view of fig. 6 viewed from another direction.

Fig. 8 is an exploded perspective view of the electrical connector of the present invention.

Fig. 9 is an exploded perspective view of fig. 8 viewed from another direction.

Fig. 10 is a schematic cross-sectional view of the electrical connector of the present invention taken along line a-a of fig. 2.

[ description of main reference symbols ]

Electrical connector 100 circuit board 200

Solder joint 201 first via 202

Second through hole 203 terminal module 1

Base 101 of insulating body 10

Base 1011 keeps off gluey portion 1012

First glue retaining part 1013 and second glue retaining part 1014

Relief notch 1015 tongue plate 102

Docking groove 1021 docking cavity 1022

Terminal 20 of abdicating groove 103

Upper row terminal 21 and lower row terminal 22

Contact portion 23 holding portion 24

Grounding terminal 26 of soldering part 25

Free end 262 of bridge 261

The middle grounding piece 3 shields the shell 4

Main body 41 of storage space 40

Inner wall surface 411 and cylindrical outer wall surface 412

Grounding pin 421 of side arm 42

Protruding part 43 housing 5

Second inner peripheral wall 51 first inner peripheral wall 52

The third inner peripheral wall 53 of the accommodation chamber 520

Sol containing space 530 accommodating chamber 531

Stepped surface 532 receiving recess 54

The buried portion 61 of the support structure 6

Support arm 611 fixed arm 62

Waterproof ring 7 of buckling part 621

Waterproof rubber plate 8

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

[ detailed description ] embodiments

Hereinafter, an embodiment of the electrical connector 100 of the present invention will be described with reference to fig. 1 to 10.

Referring to fig. 1 to 10, the present invention provides a sinking plate type electrical connector 100, which is matched with a circuit board 200. The circuit board 200 includes two rows of welding points 201, first through holes 202 located at two sides, and second through holes 203 symmetrically located at two sides and located at the rear side of the circuit board 200. The electrical connector 100 includes a terminal module 1, a shielding shell 4 sleeved outside the terminal module 1 to form an accommodating space 40, a housing 5 integrally formed with the shielding shell, a pair of bracket structures 6 fixed on the housing 5, a waterproof ring 7 fixed on the front end of the housing 5, and a waterproof rubber plate 8.

Referring to fig. 4 to 9, the terminal module 1 includes an insulative housing 10, a terminal 20 held in the insulative housing 10, and an intermediate ground plate 3.

Referring to fig. 2 to 9, the insulating housing 10 includes a base 101 fixed to the shielding shell, and a tongue plate 102 protruding forward from the base 101 and forming a mating cavity 1022 with the accommodating space 40. The base 101 includes a base 1011 and four glue blocking portions 1012 protruding from the rear end periphery of the base 1011. The four glue blocking portions 1012 are located at four ends of the base portion 1011 and are arranged symmetrically in pairs. Each of the glue blocking portions 1012 has an arc-shaped plate-like structure. The tongue 102 includes a docking channel 1021 on both sides. The glue blocking portion 1012 comprises a first glue blocking portion 1013 positioned above the rear end of the base portion 1011 and a second glue blocking portion 1014 positioned below the rear end of the base portion 1011. The second glue blocking portion 1014 protrudes from the lower surface and both sides of the base 1011, and the first glue blocking portion 1013 protrudes from the upper surface of the base 1011. The first glue blocking part 1013 is provided with abdicating notches 1015 on two sides. The circumference of the rear end of the base 1011 is provided with an abdicating groove 103, and the abdicating groove 10 is located between the pair of first glue blocking parts 1013 or the pair of second glue blocking parts 1014.

Referring to fig. 3 to 5, the terminals 20 include upper terminals 21 and lower terminals 22 opposite to the upper terminals 21. The terminals 20 each include a contact portion 23 exposed outside the tongue plate 102, a holding portion 24 held in the tongue plate 102 and the base 101, and a soldering portion 25 extending outside the base 101. The upper and lower rows of terminals 21 and 22 include two ground terminals 26, respectively. Each of the ground terminals 26 includes a bridging portion 261. The bridging portion 261 is formed to extend laterally from the holding portion 24 of the ground terminal 26. The bridging portion 261 is in the shape of a barb and a free end 262 is provided on the bridging portion 261. The two ground terminals 26 of the upper row of terminals 21 are located on both sides of the upper row of terminals 21. The bridging portions 261 of the two ground terminals 26 of the upper row terminal 21 extend laterally and are bent downward, and the free ends 262 thereof are formed to extend laterally along the bridging portions 261 to both sides. The two ground terminals 26 of the lower row of terminals 22 are located on both sides of the lower row of terminals 22. The bridging portion 261 of the two ground terminals 26 of the lower row of terminals 22 extends laterally and is bent upward and each of the free ends 262 is formed to extend along the bridging portion 261 to both sides.

Referring to fig. 4 to 6, the intermediate ground plate 3 is located between the upper row of terminals 21 and the lower row of terminals 22.

Referring to fig. 6 to 10, the shielding shell 4 is made of a metal material. The shielding shell 4 includes a main body 41 forming the accommodating space 40 and a pair of side arms 42 extending rearward from both sides of the main body 41. The body portion 41 includes an inner wall surface 411 having an annular inner side and an outer cylindrical wall surface 412. Each side arm 42 further includes a ground pin 421 extending downward from the tail portion and soldered to the circuit board 200.

Referring to fig. 1 to 4 and fig. 6 to 10, the housing 5 includes an accommodating cavity 520 surrounding the cylindrical outer wall surface 412 of the shielding shell 4, and an accommodating cavity 531 located behind the accommodating cavity 520 and having an inner peripheral dimension larger than that of the accommodating cavity 520. The housing chamber 520 houses the shield case 4. A step surface 532 for the glue blocking part 1012 to abut against is formed between the accommodating cavity 520 and the accommodating cavity 531. The housing 5 includes a first inner circumferential wall 52 attached to the cylindrical outer wall surface 412 of the shield case 4, a second inner circumferential wall 51 located at the front end of the first inner circumferential wall 52, a third inner circumferential wall 53 located at the rear end of the first inner circumferential wall 52 and having an inner circumferential dimension larger than that of the first inner circumferential wall 52, and a housing groove 54 located at the head end outer surface. The receiving cavity 520 may be a space formed by the first inner circumferential wall 52 and the second inner circumferential wall 51, and an inner circumferential dimension of the first inner circumferential wall 52 is consistent with an inner circumferential dimension of the second inner circumferential wall 51. Preferably, in the present embodiment, the inner circumference of the second inner circumference wall 51 is smaller than the inner circumference of the first inner circumference wall 52, so that the shielding shell 4 and the housing 5 are better held. Thus, the front end of the shielding shell 4 abuts against the step formed at the intersection of the first inner peripheral wall 52 and the second inner peripheral wall 51, and the rear end of the shielding shell 4 extends out of the first inner peripheral wall 52 to form the protruding portion 43. The protruding portion 43 protrudes from the recess 103 and abuts against the insulating body 10. A gap is formed between the protruding portion 43 and the third inner peripheral wall 53. The receiving cavity 531 may be divided into two portions, that is, a space surrounded by a gap formed between the protruding portion 43 and the third inner peripheral wall 53 and a plane where the upper protruding portion 43 and the lower protruding portion 43 are located. By the arrangement, the fixed waterproof effect of the waterproof rubber plate 8 formed by glue pouring is better. The housing further includes a sol space 530 having an inner circumferential dimension behind the accommodating chamber 531 larger than that of the accommodating chamber 531. The waterproof material is injected into the sol space 530 to form the waterproof rubber plate 8, so that the front end of the waterproof rubber plate 8 abuts against the glue blocking part 1012, and the rear end of the waterproof rubber plate 8 abuts against the base 101 and the rear end of the glue blocking part 1012 in a sealing manner. The waterproof ring 7 is fixedly attached to the accommodating groove 54.

Referring to fig. 8 to 9, the pair of supporting structures 6 are disposed at the inner walls of the two sides of the rear end of the housing 5, and are separated from each other and symmetrically disposed. Each of the support structures 6 includes an embedded portion 61 fixed in the housing 5, a fixing arm 62 formed by extending the embedded portion 61 rearward to a rear end of the housing 5, and a support arm 611 formed by extending laterally from the embedded portion 61. The supporting arms 611 of the pair of supporting structures 6 extend laterally out of two sides of the housing 5 and are formed by bending and extending downwards. Each of the fixing arms 62 further includes a retaining portion 621 retained at the rear end of the insulating housing 10. Two of the retaining portions 621 are formed extending from the upper edge of each of the fixing arms 62 toward each other in the transverse direction. The securing arm 62 is located inside the side arm 42 and is held by welding. The offset gap 1015 of the first glue blocking portion 1013 is offset to the fixing arm 62 and the side arm 42.

Referring to fig. 1 to 10, the manufacturing method of the electrical connector 100 of the present invention includes the following steps:

a shield case 4 is provided, and the shield case 4 is cylindrical and penetrates in the front-rear direction to form an accommodation space 40.

The housing 5 is integrally formed on the cylindrical outer wall surface 412 of the shield case 4 and is tightly attached to the shield case 4.

A terminal module 1 is provided, the terminal module 1 including an insulative housing 10 and a terminal 20 integrally formed with the insulative housing.

The terminal module 1 is installed into the integrally formed housing 5 and the shielding shell 4 from back to front, and a sol space 530 is formed between the housing 5 and the rear end of the terminal module 1.

A waterproof material is provided and injected into the sol space 530, thereby forming a waterproof rubber plate 8 sealed at the rear end of the terminal module.

Compared with the prior art, the invention has the following beneficial effects: because the shielding shell 4 and the shell 5 are integrally formed to shield the terminal module 1, no gap exists between the shielding shell 4 and the shell 5, and glue cannot enter the butt joint cavity 1022 through the space between the shielding shell 4 and the shell 5 in the process of forming the waterproof glue board, so that the glue overflow condition is prevented.

The above description is only a part of the embodiments of the present invention, and not all embodiments, and any equivalent variations of the technical solutions of the present invention, which are made by those skilled in the art through reading the present specification, are covered by the claims of the present invention.

Claims (7)

1. An electrical connector comprising a terminal module having an insulating body and a terminal held by the insulating body, and a shield case covering the terminal module, wherein the shield case is cylindrical and penetrates in the front-rear direction to form a housing space for housing the terminal module, the shield case including a cylindrical outer wall surface, the electrical connector comprising: the electric connector further comprises a shell which is integrally formed on the cylindrical outer wall surface and is tightly attached to the shielding shell, the insulating body comprises a base which is fixedly held on the shielding shell and a tongue plate which protrudes forwards from the base and forms a butt joint cavity with the accommodating space, the base comprises a base part and a glue blocking part which protrudes out of the periphery of the rear end of the base part, the shell comprises an accommodating cavity which is annularly arranged on the cylindrical outer wall surface of the shielding shell and an accommodating cavity which is positioned behind the accommodating cavity and has the inner peripheral dimension which is larger than the inner peripheral dimension of the accommodating cavity, a step surface for the glue blocking part to abut against is formed between the accommodating cavity and the accommodating cavity, the shell further comprises a first inner peripheral wall which is attached to the cylindrical outer wall surface of the shielding shell, a second inner peripheral wall which is positioned at the front end of the first inner peripheral wall and has the inner peripheral dimension which is smaller than the inner peripheral dimension of the first inner peripheral wall, and a second inner peripheral wall which is positioned at the rear end of the first inner peripheral The shielding shell comprises a first inner peripheral wall and a second inner peripheral wall, the first inner peripheral wall is arranged at the intersection of the first inner peripheral wall and the second inner peripheral wall, the second inner peripheral wall is arranged at the intersection of the first inner peripheral wall and the second inner peripheral wall, the third inner peripheral wall is formed in the accommodating cavity, the front end of the shielding shell abuts against a step formed at the intersection of the first inner peripheral wall and the second inner peripheral wall, the rear end of the shielding shell extends out of the first inner.

2. The electrical connector of claim 1, wherein: and a relief groove is arranged at the periphery of the rear end of the base part corresponding to the protruding part so as to allow the protruding part to protrude.

3. The electrical connector of claim 1, wherein: the electric connector further comprises a support structure fixed on the inner walls of the two sides of the rear end of the shell, the support structure is made of metal materials, and the support structure and the shell are integrally formed in an injection molding mode.

4. The electrical connector of claim 3, wherein: the side arms extending backwards are arranged on two sides of the rear end of the shielding shell, and the support structure comprises an embedding part fixedly held in the shell and a fixed arm extending out of the shell along the embedding part, located on the outer side of the side arms and fixedly held on the side arms in a welding mode.

5. The electrical connector of claim 4, wherein: keep off gluey portion including being located the first fender of basal portion rear end top is glued the portion and is located the second fender of basal portion rear end below is glued the portion, the second is kept off gluey portion stretch suddenly in basal portion lower surface and left and right sides, first fender is glued the portion stretch suddenly in basal portion upper surface and form in the left and right sides and give way the fixed arm with the breach of stepping down of side arm.

6. The electrical connector of claim 1, wherein: the shell further comprises a sol space which is positioned behind the containing cavity and has an inner peripheral dimension larger than that of the containing cavity.

7. A method of manufacturing an electrical connector comprising the steps of:

providing a shielding shell which is cylindrical and penetrates in the front-back direction to form an accommodating space;

providing a terminal module, wherein the terminal module comprises an insulating body and a terminal integrally formed with the insulating body, the insulating body comprises a base fixedly held in the shielding shell and a tongue plate which protrudes forwards from the base and forms a butt joint cavity with the accommodating space, and the base comprises a base part and a glue blocking part which protrudes and is arranged on the periphery of the rear end of the base part;

providing a shell which is integrally formed on the cylindrical outer wall surface of the shielding shell and is tightly attached to the shielding shell, wherein the shell comprises an accommodating cavity which is annularly arranged on the cylindrical outer wall surface of the shielding shell and an accommodating cavity which is positioned behind the accommodating cavity and has the inner circumference size larger than the inner circumference size of the accommodating cavity, a step surface for abutting against a glue blocking part is formed between the accommodating cavity and the accommodating cavity, the shell further comprises a first inner circumferential wall which is attached to the cylindrical outer wall surface of the shielding shell, a second inner circumferential wall which is positioned at the front end of the first inner circumferential wall and has the inner circumference size smaller than that of the first inner circumferential wall, and a third inner circumferential wall which is positioned at the rear end of the first inner circumferential wall and has the inner circumference size larger than that of the first inner circumferential wall and forms the accommodating cavity, and the front end of the shielding shell abuts against the step formed at the intersection of the first inner circumferential wall and the second inner circumferential wall, the rear end of the shielding shell extends out of the first inner peripheral wall to form a protruding part, and a gap is formed between the protruding part and the third inner peripheral wall;

the terminal module is arranged in an integrally formed shell and a shielding shell from back to front, and a sol space is formed at the rear ends of the shell and the terminal module;

and providing a waterproof material, and injecting the waterproof material into the sol space so as to form a waterproof rubber plate for sealing the rear end of the terminal module.

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