CN109004445B

CN109004445B - Electrical connector

Info

Publication number: CN109004445B
Application number: CN201810686499.4A
Authority: CN
Inventors: 陈志林; 彭建民; 代华银
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2018-04-24
Filing date: 2018-06-28
Publication date: 2019-12-27
Anticipated expiration: 2038-06-28
Also published as: CN109004445A

Abstract

The invention discloses an electric connector, which is used for matching a butting connector and comprises: a shell, a butt space and a filling groove are respectively arranged at the front and the back of the shell; the first terminal is provided with a first section formed by extending from the butting space into the filling groove and a second section formed by bending and extending from the first section downwards, the second terminal is provided with a third section formed by extending from the butting space into the filling groove and a fourth section formed by bending and extending from the third section downwards, the fourth section is closer to the butting space than the second section, and the second section and the fourth section are at least partially exposed in the filling groove; a sealing member, fills in filling the inslot, and the sealing member blocks the inside that steam got into the shell, electric connector's inside promptly, and simultaneously, second section and fourth section are fixed to the sealing member, and electric connector is with low costs like this, and waterproof performance is more stable, and water-proof effects is better.

Description

Electrical connector

Technical Field

The invention relates to an electric connector, in particular to an electric connector applied to the field of automobiles.

Background

The existing electric connector with better high-frequency performance is used for being butted with a butting connector and comprises an insulating body, a metal body assembled to the insulating body and four terminals installed in the insulating body and the metal body, wherein the insulating body is positioned between the butting connector and the metal body, the insulating body is provided with an accommodating part, the metal body is provided with a matching part accommodated in the accommodating part of the insulating body, however, a gap exists between the matching part of the metal body of the electric connector and the accommodating part of the insulating body, and after the electric connector is used for a long time, water vapor slowly enters an internal circuit of the electric connector from the outside through the gap, and finally the internal circuit of the electric connector is damaged.

Further, there is an electrical connector, wherein each of the first conductor and the second conductor has a horizontal portion extending horizontally and a vertical portion formed by bending and extending the horizontal portion downward. The first conductor and the second conductor are arranged in the first insulator and the second insulator respectively, the first conductor and the first insulator are integrally formed, and the second conductor and the second insulator are integrally formed. The first insulator is arranged outside the first shield body, the second insulator is arranged outside the second shield body, the first accommodating groove and the second accommodating groove are formed in the front end of the shell, the front end of the first shield body is inserted into the first accommodating groove, and the front end of the second shield body is located in the second accommodating groove. There is no gap between the metal shell and the insulating shell, however, the insulator and the conductor are integrally formed, which requires high precision for the mold, resulting in high cost of the electrical connector.

Therefore, there is a need for a new electrical connector to overcome the above problems.

Disclosure of Invention

In view of the problems faced by the background art, the present invention is directed to an electrical connector with good waterproof effect.

In order to achieve the purpose, the invention adopts the following technical scheme:

an electrical connector for mating with a mating connector, comprising: the front and the back of the shell are respectively provided with a butt-joint space and a filling groove; at least one first terminal and at least one second terminal are accommodated in the shell, the first terminal is provided with a first section formed by extending from the butt joint space to the filling groove and a second section formed by bending and extending from the first section downwards, the second terminal is provided with a third section formed by extending from the butt joint space to the filling groove and a fourth section formed by bending and extending from the third section downwards, the fourth section is closer to the butt joint space than the second section, and the second section and the fourth section are at least partially exposed in the filling groove; and the sealing element is filled in the filling groove.

Further, the shell has a retaining wall located between the butt joint space and the filling groove, the retaining wall has at least one first through hole and at least one second through hole, and the first through hole and the second through hole all run through the butt joint space and the filling groove.

Furthermore, a first insulating sleeve is arranged outside the first section, a first shielding shell is arranged outside the first insulating sleeve, and the first shielding shell is fixed in the first through hole and protrudes forwards into the butt joint space.

Furthermore, a first shielding shell is from integrative protruding the entering forward of barricade in the butt joint space, first shielding shell encircles first through-hole sets up, first section is located in the first through-hole, and is equipped with a first insulating cover outward, first insulating cover is equipped with a first shielding shell outward.

Furthermore, a second insulating sleeve is arranged outside the second section part, and the upper end and the lower end of the second section part are both exposed in the filling groove.

Furthermore, a third insulating sleeve is arranged outside the third section, a second shielding shell is arranged outside the third insulating sleeve, and the second shielding shell is fixed in the second through hole and protrudes forwards into the butt joint space.

Furthermore, a second shielding shell is arranged in the butt joint space from the retaining wall, the retaining wall integrally protrudes forwards to enter the butt joint space, the second shielding shell surrounds the second through hole, the third section is arranged in the second through hole and is externally provided with a third insulating sleeve, and the third insulating sleeve is externally provided with a second shielding shell.

Furthermore, a fourth insulating sleeve is arranged on the fourth section, and the upper end and the lower end of the fourth section are both exposed in the filling groove.

Further, the bottom surface of the shell is provided with a first opening, and the first opening is formed by the filling groove penetrating through the bottom surface of the shell downwards.

Further, a second opening is formed in the rear face of the shell, and the second opening is formed by the filling groove penetrating through the rear face of the shell backwards.

Further, the electric connector is provided with a shielding piece, and the shielding piece shields the second opening.

Furthermore, the first terminal has a first welding portion, the first welding portion protrudes downwards from the second section to the bottom surface of the shell and extends to form, the second terminal has a second welding portion, and the second welding portion protrudes downwards from the fourth section to the bottom surface of the shell and extends to form.

Further, the sealing element is formed after waterproof materials enter the filling groove.

Further, the waterproof material is glue.

Further, the shell is made of metal.

Compared with the prior art, the invention is provided with a butt-joint space and a filling groove respectively at the front and the rear of the shell, at least one first terminal and at least one second terminal are accommodated in the shell, the first terminal is provided with a first section formed by extending from the inside of the butt-joint space to the inside of the filling groove and a second section formed by bending and extending from the first section downwards, the second terminal is provided with a third section formed by extending from the inside of the butt-joint space to the inside of the filling groove and a fourth section formed by bending and extending from the third section downwards, the fourth section is closer to the butt-joint space than the second section, the second section and the fourth section are both at least partially exposed in the filling groove, a sealing element is filled in the filling groove, the sealing element blocks water vapor from entering the inside of the shell, namely the inside of the electric connector, and simultaneously, the sealing element fixes the second section and the fourth section, the terminal and the insulator are not required to be integrally formed, the electric connector is low in cost, stable in waterproof performance and good in waterproof effect.

[ description of the drawings ]

Fig. 1 is a perspective view of an electrical connector according to a first embodiment of the present invention;

fig. 2 is a partial sectional view of the first embodiment of the electrical connector before assembly;

FIG. 3 is a partially assembled cross-sectional view of the electrical connector of the first embodiment;

FIG. 4 is a cross-sectional view of the first embodiment of the electrical connector during glue application;

fig. 5 is a cross-sectional view of the electrical connector of the first embodiment;

fig. 6 is a front view of the electrical connector of the first embodiment;

fig. 7 is an exploded perspective view of the electrical connector of the first embodiment;

fig. 8 is a plan exploded view of the electrical connector of the second embodiment;

fig. 9 is a perspective partial cross-sectional view of the electrical connector of the second embodiment.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

electrical connector 100	Outer casing 1	Main body part 1a	Retaining wall 1b
				First through hole 11	Second through hole 12	Filling the groove 13	First opening 14
The first round mouth 141	Second round mouth 142	Second opening 15	Grounding post 16
				Boss 17	Butt joint part 1c	Docking space 18	First terminal module 2
First terminal 21	First contact portion 221	First holding portion 222	Second section 23
				First weld 24	First insulating sleeve 25	Second insulating sheath 26	First shield case 27
Small shielding sleeve 271	Large shielding cover 272	Second terminal module 3	Second terminal 31
				Second contact portion 321	Second holding portion 322	Fourth stage 33	Second weld 34
Third insulating sleeve 35	Fourth insulating sleeve 36	Second shield case 37	Front shielding cover 371
				Rear shielding sleeve 372	Sealing element 4	Shield 5	Circuit board 6
First section 22	Third segment 32

[ detailed description ] embodiments

For a better understanding of the objects, structure, features, and functions of the invention, reference should be made to the drawings and detailed description that follow.

Referring to fig. 1, fig. 6 and fig. 7, an electrical connector 100 according to a first embodiment of the present invention is an electrical connector 100, the electrical connector 100 is used for matching with a mating connector (not shown), and includes a housing 1, two first terminal modules 2, two second terminal modules 3, a sealing member 4 and a shielding member 5 disposed on a rear end surface of the housing 1, in the present embodiment, the housing 1 is made of metal material and is conducted with a ground path on a circuit board 6. In other embodiments, the housing 1 may also be made of an insulating material.

Referring to fig. 2, 6 and 7, the housing 1 includes a main body portion 1a and a mating portion 1c formed by extending the main body portion 1a forward, and the mating portion 1c is provided with a mating space 18 recessed rearward from a front end thereof. Main part 1a has from its bottom surface left and right sides and the middle of rear side upwards the concave filling groove 13 of establishing the formation, main part 1a has a barricade 1b, barricade 1b is located butt joint space 18 with between the filling groove 13, be equipped with two first through-holes 11 and two second through-holes 12 on the barricade 1b, first through-hole 11 and second through-hole 12 are all certainly to in the butt joint space 18 extend in the filling groove 13 and form, two first through-hole 11 and two second through-hole 12 transversely arranges into two rows, two second through-hole 12 is located one respectively under first through-hole 11. The filling groove 13 penetrates through the bottom surface of the housing 1 downward, a first opening 14 is formed on the bottom surface of the housing 1 corresponding to the filling groove 13, and the first opening 14 has a first round opening 141 and a second round opening 142 which are circular. The filling groove 13 extends backwards through the rear face of the housing 1, and a second opening 15 is formed in the rear face of the housing 1 corresponding to the filling groove 13.

Five grounding posts 16 protrude downwards from the bottom surface of the main body 1a, and the grounding posts 16 are used for being connected to a grounding path on the circuit board 6 in a conductive manner, so that the housing 1 is grounded and shields the electrical connector 100. The bottom surface of the main body part 1a also extends downwards to form a plurality of bosses 17, and the bosses 17 increase the shielding effect of the shell.

Referring to fig. 2 and 5, the first terminal module 2 includes a first terminal 21 for transmitting signals, a first insulating sleeve 25 disposed outside the first terminal 21, a second insulating sleeve 26, and a first shielding shell 27 disposed outside the first insulating sleeve 25. The first terminal 21 includes a first section 22 formed by extending from the inside of the mating space 18 into the filling groove 13, a second section 23 formed by bending and extending from the first section 22, and a first welding portion 24 formed by extending from the second section 23 to the bottom of the housing 1. The first section 22 has a first contact portion 221 exposed in the docking space 18 and a first holding portion 222 formed by the first contact portion 221 extending horizontally backward. The first insulating sleeve 25 is disposed outside the first contact portion 221 and the first holding portion 222. The second insulating sleeve 26 is disposed outside the second section 23. The second section 23 has no portion of the second insulating sleeve 26, that is, the upper and lower ends of the second section 23 are exposed in the filling groove 13. The first shield case 27 is disposed outside the first insulating sheath 25. The first shield shell 27 has a large shield 272 with a large diameter and a small shield 271 with a small diameter formed by extending the large shield 272 forward. The large shielding sleeve 272 is inserted into the first through hole 11, and the small shielding sleeve 271 is exposed in the docking space 18. The first welding part 24 protrudes downward out of the first round mouth 141 of the housing 1.

The second terminal module 3 includes a second terminal 31 for transmitting signals, a third insulating sleeve 35 disposed outside the second terminal 31, a fourth insulating sleeve 36, and a second shielding shell 37 disposed outside the third insulating sleeve 35. The second terminal 31 includes a third section 32 formed by extending from the inside of the mating space 18 into the filling slot 13, a fourth section 33 formed by bending and extending from the third section 32 downward, and a second welding portion 34 formed by extending from the fourth section 33 downward and protruding out of the bottom surface of the housing 1. The third section 32 has a second contact portion 321 exposed in the docking space 18, and a second holding portion 322 formed by extending the second contact portion 321 rearward and horizontally. The third insulating sleeve 35 is disposed outside the second contact portion 321 and the second holding portion 322, and the fourth insulating sleeve 36 is disposed outside the fourth segment 33. The fourth insulating sleeve 36 is disposed in the middle of the fourth section 33. The upper and lower ends of the fourth section 33 are exposed in the filling groove 13. The second shield shell 37 is disposed outside the third insulating sheath 35. The second shield case 37 has a rear shield 372 having a large diameter and a front shield 371 having a small diameter formed by extending the rear shield 372 forward. The rear shielding sleeve 372 is inserted into the second through hole 12, and the front shielding sleeve 371 is exposed in the docking space 18. The second welding portion 34 protrudes downward out of the second round opening 142 of the housing 1.

Referring to fig. 4 and 5, the sealing member 4 is filled in the filling groove 13. The sealing member 4 is formed by a waterproof material entering the filling groove 13 from the rear end of the first opening 14. The waterproof material may be glue, liquid rubber, or other material with strong sealing and waterproof effects, and in this embodiment, glue is preferred, and the sealing member 4 may prevent liquid substances such as water from permeating into the electrical connector 100 from the outside. The shape of the sealing member 4 may be changed according to the change of the gap between the second terminal module 3, the first terminal module 2 and the housing 1 in the filling groove 13.

Referring to fig. 2, fig. 3 and fig. 4, during assembly, the third insulating sleeve 35 is first disposed in the second shielding shell 37, then the second shielding shell 37 is inserted into the docking space 18 from front to back, the front shielding sleeve 371 is riveted into the second through hole 12, then the second terminal 31 is inserted into the second opening 15 of the housing 1, the second contact portion 321 and the second holding portion 322 are inserted into the third insulating sleeve 35, and finally the fourth insulating sleeve 36 is inserted into the filling groove 13 from the second round opening 142 from bottom to top, so that the fourth insulating sleeve 36 is disposed outside the fourth section 33. After the two second terminal modules 3 are assembled, the two first terminal modules 2 are assembled by the same assembling method. A shielding member 5, preferably mylar in this embodiment, is then shielded from the second opening 15. Finally, waterproof glue is poured into the filling groove from the rear end of the first opening 14 until the waterproof glue fills the filling groove 13 to form the sealing element 4. The sealing member 4 covers the upper and lower ends of the second section of the first terminal module 2 and the outside of the second insulating sleeve 26, and can fix the first terminal module 2. Also, the seal member 4 may fix the second terminal module 3. At the same time, moisture is prevented from entering the electrical connector 100.

Referring to fig. 8 and 9, an electrical connector 100 according to a second embodiment of the present invention is shown, and the electrical connector 100 according to the second embodiment is different from the electrical connector 100 according to the first embodiment in that: the housing 1 includes the first shield case 27 and the second shield case 37. In this embodiment, the whole housing 1 is obtained by metal powder injection molding or die casting, so that the first shielding shell 27, the second shielding shell 37 and the retaining wall 1b are integrally formed and protrude forward from the retaining wall 1b into the docking space 18, thereby ensuring the coaxiality of the first shielding shell 27 (the second shielding shell 37) and the first section 22 (the third section 32), ensuring the uniform distance from the first section 22 (the third section 32) to the first shielding shell 27 (the second shielding shell 37) surrounding the first section 22 (the third section 32), and facilitating the shielding effect of the first shielding shell 27 (the second shielding shell 37) on the transmission signals of the first terminal 21 (the second terminal 31); meanwhile, compared with the electrical connector 100 of the first embodiment, the assembling steps of sleeving the first shielding shell 27 (the second shielding shell 37) on the first insulating sleeve 25 (the third insulating sleeve 35) are reduced, thereby achieving the convenience of assembling the electrical connector 100; furthermore, there is no assembly tolerance between the first shielding shell 27 and the second shielding shell 37 and the retaining wall 1b, and the positions of the first shielding shell 27 and the second shielding shell 37 in the docking space 18 are fixed, so that the first shielding shell and the second shielding shell are not easy to be dislocated, which is beneficial to docking with a docking connector.

In summary, the electrical connector 100 of the present invention has the following advantages:

1. according to the invention, the front and the back of the shell 1 are respectively provided with the butt joint space 18 and the filling groove 13, the shell 1 is internally provided with the first terminal 21 and the second terminal 31, and the first terminal 21 and the second terminal 31 are used for transmitting signals. The first terminal 21 has a second section 23, the second terminal 31 has a fourth section 33, the fourth section 33 and the second section 23 are at least partially exposed in the filling groove 13, the fourth section 33 is closer to the butt joint space 18 than the second section 23, a sealing element 4 is filled in the filling groove 13, the sealing element 4 can fix the fourth section 33 and the second section 23 and prevent water vapor from entering the electric connector 100 from the outside, and the electric connector 100 is low in cost, stable in waterproof performance and good in waterproof effect.

2. The shell 1 has a barricade 1b, barricade 1b is located between butt joint space 18 and the filling groove 13, be equipped with on the barricade 1b first through-hole 11 and second through-hole 12 have been riveted respectively first shielding shell 27 and second shielding shell 37, filling groove 13 certainly the formation is established to the casing 1 bottom upwards concave, glue is followed the rear end of first opening 14 is irritated during the filling groove 13, has avoided glue to flow into in the butt joint space 18.

3. The filling groove 13 penetrates through the bottom surface of the housing 1 downward, so that the second insulating sleeve 26 and the fourth insulating sleeve 36 can be inserted into the filling groove 13 from the first opening 14, and further can be fixedly arranged on the second section 23 and the fourth section 33, respectively, the filling groove 13 penetrates through the rear surface of the housing 1 backward, so that the second terminal 31 can be inserted into the filling groove 13 from the second opening first, and then the first terminal 21 can be inserted into the filling groove 13 from the second opening.

4. The shielding member 5 shields the second opening 15, and prevents glue from flowing out of the filling groove 13 from the second opening 15 during glue filling.

5. The shell 1 is made of metal and can be conducted with a grounding path of the circuit board 6 to shield the electric connector 100, and the electric connector 100 is good in high-frequency performance and has a good waterproof effect.

6. The first shielding shell 27, the second shielding shell 37 and the retaining wall 1b are integrally formed, and protrude forward from the retaining wall 1b to enter the abutting space 18, so that the coaxiality of the first shielding shell 27 (the second shielding shell 37) and the first section 22 (the third section 32) is ensured, the distance from the first section 22 (the third section 32) to the first shielding shell 27 (the second shielding shell 37) surrounding the first section 22 (the third section 32) is ensured to be uniform, and the shielding effect of the first shielding shell 27 (the second shielding shell 37) on the transmission signals of the first terminal 21 (the second terminal 31) is facilitated.

7. The first shielding shell 27, the second shielding shell 37 and the retaining wall 1b are integrally formed, there is no assembly tolerance between the first shielding shell 27 and the retaining wall 1b and between the second shielding shell 37 and the retaining wall 1b, and the positions of the first shielding shell 27 and the second shielding shell 37 in the butt space 18 are fixed, so that the first shielding shell 27 and the second shielding shell 37 are not easy to be dislocated, and the butt joint with the butting connector is facilitated.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all technical changes that can be made by applying the present specification and the drawings are included in the scope of the present invention.

Claims

1. An electrical connector for mating with a mating connector, comprising:

the shell is made of metal, a butt joint space and a filling groove are respectively arranged at the front and the rear of the shell, and the shell is provided with a first shielding shell and a second shielding shell which protrude forwards and extend into the butt joint space;

at least one first terminal and at least one second terminal are accommodated in the shell, the first terminal is provided with a first section formed by extending from the butt joint space to the filling groove and a second section formed by bending and extending from the first section downwards, the second terminal is provided with a third section formed by extending from the butt joint space to the filling groove and a fourth section formed by bending and extending from the third section downwards, the fourth section is closer to the butt joint space than the second section, and the second section and the fourth section are at least partially exposed in the filling groove;

the first section is externally provided with the first insulating sleeve, and the first insulating sleeve is externally provided with a first shielding shell;

the second insulating sleeve is accommodated in the filling groove, and the second section part is externally provided with the second insulating sleeve;

the third section of the third insulating sleeve is externally provided with the third insulating sleeve, and the third insulating sleeve is externally provided with a second shielding shell;

the fourth insulating sleeve is accommodated in the filling groove, and the fourth section part is provided with the fourth insulating sleeve;

and the sealing element is filled in the filling groove and is made of waterproof material, one part of the sealing element is connected with the first insulating sleeve and the second insulating sleeve and is positioned between the bent joint of the first section and the second section and the inner wall of the filling groove, and the other part of the sealing element is connected with the third insulating sleeve and the fourth insulating sleeve and is positioned between the bent joint of the third section and the fourth section and the inner wall of the filling groove.

2. The electrical connector of claim 1, wherein: the shell is provided with a retaining wall positioned between the butt joint space and the filling groove, the retaining wall is provided with at least one first through hole and at least one second through hole, and the first through hole and the second through hole penetrate through the butt joint space and the filling groove.

3. The electrical connector of claim 2, wherein: the first shielding shell is fixed in the first through hole.

4. The electrical connector of claim 2, wherein: a first shielding shell certainly the integrative protruding entering forward of barricade the butt joint space in, first shielding shell encircles first through-hole sets up, first section is located in the first through-hole, and is equipped with a first insulating cover outward, first insulating cover is equipped with a first shielding shell outward.

5. The electrical connector of claim 1, wherein: the upper end and the lower end of the second section are exposed in the filling groove.

6. The electrical connector of claim 2, wherein: the second shielding shell is fixed in the second through hole.

7. The electrical connector of claim 2, wherein: a second shielding shell certainly the integrative protruding entering forward of barricade the butt joint space in, second shielding shell encircles the second through-hole sets up, the third section is located in the second through-hole, and be equipped with a third insulating cover outward, the third insulating cover is equipped with a second shielding shell outward.

8. The electrical connector of claim 1, wherein: the upper end and the lower end of the fourth section are exposed in the filling groove.

9. The electrical connector of claim 1, wherein: the bottom surface of the shell is provided with a first opening, and the first opening is formed by the filling groove penetrating through the bottom surface of the shell downwards.

10. The electrical connector of claim 1, wherein: the rear face of the shell is provided with a second opening, and the second opening is formed by the filling groove penetrating through the rear face of the shell backwards.

11. The electrical connector of claim 10, wherein: the electric connector is provided with a shielding piece, and the shielding piece shields the second opening.

12. The electrical connector of claim 1, wherein: the first terminal is provided with a first welding part, the first welding part protrudes downwards from the second section to form the bottom surface of the shell in an extending mode, the second terminal is provided with a second welding part, and the second welding part protrudes downwards from the fourth section to form the bottom surface of the shell in an extending mode.

13. The electrical connector of claim 1, wherein: the sealing element is formed after waterproof materials enter the filling groove.

14. The electrical connector of claim 13, wherein: the waterproof material is glue.