CN109687224B

CN109687224B - Electrical connector

Info

Publication number: CN109687224B
Application number: CN201910136142.3A
Authority: CN
Inventors: 陈志林; 彭建民
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2018-12-27
Filing date: 2019-02-25
Publication date: 2020-09-29
Anticipated expiration: 2039-02-25
Also published as: CN109687224A; CN109687205B; CN109687205A

Abstract

The invention discloses an electric connector, which is used for butting a butting connector and comprises: an electrical connection module for electrically connecting the butting connector; the metal shell is arranged on the electric connection module; the insulating shell is coated outside the metal shell, a first channel, a second channel positioned behind the first channel and a third channel connected with the first channel and the second channel are arranged between the insulating shell and the metal shell, and at least part of the third channel is inwards sunken relative to the first channel and the second channel. When external water vapor flows into the third channel from the first channel, the water vapor is not easy to climb to the second channel along the third channel, so that the external water vapor can be accumulated in the third channel, the water vapor is reduced from flowing backwards, and the waterproof effect of the electric connector is improved.

Description

Electrical connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector, and more particularly, to a waterproof electrical connector.

[ background of the invention ]

An electrical connector is known to be located within an electronic device. The electrical connector has an insulative housing including a base and a tongue extending forwardly from the base. The terminals are arranged on the insulating body, each terminal is provided with a contact part exposed on the plate surface of the tongue plate and used for electrically connecting a butting connector. A shielding shell covers the base part and forms a butt-joint space with the tongue plate for accommodating the butt-joint connector, and an insulating seat is arranged outside the shielding shell. With the development of electronic devices, the waterproof function of the electronic devices is increasingly required. In order to realize a waterproof function in the prior art, a waterproof ring is arranged outside the insulating base and used for preventing water vapor from entering the electronic equipment along the outer surface of the insulating base.

However, a gap may exist between the shield case and the insulating base. Moisture may enter the electronic device along the gap between the shield case and the insulating base, thereby causing a short circuit of the electronic device.

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

[ summary of the invention ]

The invention aims to provide an electric connector which is provided with an inwards concave channel between an insulating shell and a metal shell, so that external water vapor is not easy to climb backwards, and the waterproof effect is improved.

In order to achieve the purpose, the invention adopts the following technical scheme: an electrical connector for mating with a mating connector, comprising: the electric connection module is used for electrically connecting the butting connector; the metal shell is arranged on the electric connection module, and the upper surface of the metal shell is provided with a plane; the insulating shell is wrapped outside the metal shell, a first channel, a second channel located behind the first channel and a third channel connected with the first channel and the second channel are arranged between the insulating shell and the metal shell, and a part of the third channel is located between the plane and the insulating shell and is inwards sunken relative to the first channel and the second channel.

Furthermore, the metal shell comprises a first shell and a second shell which are arranged in a front-back mode, the first shell is provided with a butt joint part, the butt joint part and the electric connection module are arranged at intervals to form a butt joint cavity for accommodating the butt joint connector, a connecting part is bent inwards at the rear end of the butt joint part and extends, an installation part extends backwards from the connecting part and is abutted to the electric connection module, and at least part of the second shell is arranged outside the installation part and is arranged at intervals with the connecting part.

Further, the insulating housing, the first housing and the second housing are integrally injection-molded, the first channel is arranged between the butt joint part and the insulating housing, the second channel is arranged between the mounting part and the insulating housing, and the third channel is arranged between the second housing and the connecting part.

Furthermore, the second shell is abutted to the outside of the mounting part, a fourth channel is arranged between the second shell and the mounting part and communicated with the third channel, and a waterproof piece is arranged in the fourth channel.

Further, the electric connection module is provided with a waterproof block which is arranged behind the fourth channel and integrally formed with the waterproof piece.

Further, the installation department encircles the cladding electricity and connects the module, the second casing has an opening, it has a waterproof piece to connect the module to connect, waterproof piece is located the open-ended rear.

Further, the second shell is provided with a notch, the notch is located behind the second channel, and the insulating shell enters the notch.

Furthermore, the second shell is provided with an extension part which is positioned behind the gap, and the extension part extends out of the insulating shell to form a grounding channel with an external element.

Furthermore, the electrical connection module is provided with an insulation body, the insulation body comprises a base part and a tongue plate, the tongue plate extends forwards from the base part and is arranged in a step with the base part, the metal shell is provided with a mounting part which is inwards concave and is abutted against the base part, and at least part of the third channel is arranged between the mounting part and the insulation shell.

Furthermore, the insulation body is provided with a rear end seat which is positioned behind the base part and is arranged at an interval with the base part, and the electric connection module is further provided with a waterproof block which is arranged between the base part and the rear end seat.

Further, the plurality of terminals are arranged on the insulating body, the terminals are respectively provided with a first section, a second section and a third section from front to back, the first section is fixed on the base and the tongue plate, the second section is fixed on the waterproof block, the third section is fixed on the rear end seat, each first section is provided with a contact part exposed on the surface of the tongue plate, the plurality of terminals are provided with a pair of signal terminals, and the center distance between the two contact parts in the pair of signal terminals is larger than that between the two second sections.

Furthermore, each third section is provided with a guide connection part extending out of the rear end seat, and in the pair of signal terminals, the center distance between the two guide connection parts is larger than that between the two second sections.

Furthermore, the electrical connection module comprises an insulating body and a row of terminals arranged on the insulating body, the front end of each terminal is provided with a contact part electrically contacted with the butting connector, the rear end of each terminal is provided with a conductive connection part extending out of the insulating body to be electrically conducted with an external element, each terminal is provided with a bending part bent downwards and positioned between the contact part and the conductive connection part, the insulating body is provided with a plurality of limiting grooves, and each limiting groove is positioned between every two adjacent bending parts.

Furthermore, a convex block is arranged between the two limiting grooves, and the bent part is embedded in the convex block.

Further, the plurality of terminals has a pair of differential signal terminals in which the distance between the centers of the two contact portions is equal to the distance between the centers of the two bent portions.

Furthermore, the electric connection module has interior notes plastic part and cladding in an outer plastic part of interior plastic part, interior notes plastic part have a tongue piece and expose in respectively a plurality of terminals of the face of tongue piece, certainly the tongue piece front end is to the back concave setting and is located a logical groove between the upper and lower face of tongue piece, certainly the face of tongue piece is concave establishes a perforation, with logical groove intercommunication.

Further, interior notes plastic part has a base, certainly the base with the tongue piece is the step setting, the perforation is located the tongue piece with the junction of base.

Further, the electric connection module is further provided with a grounding piece fixed on the base, a butting part is convexly arranged on the surface of the grounding piece, the outer injection molding piece wraps the base, and the butting part protrudes out of the outer injection molding piece and is butted with the metal shell.

Furthermore, the waterproof ring is provided, a containing groove is concavely arranged on the outer surface of the insulating shell and used for containing and limiting the waterproof ring, and an anti-overflow groove is arranged between the containing groove and the outer surface of the insulating shell.

Further, the outer surface of the insulating shell, the bottom surface of the overflow preventing groove and the bottom surface of the containing groove are step-by-step in shape.

Compared with the prior art, the electric connector comprises: the electric connection module is used for electrically connecting the butting connector; the metal shell is arranged on the electric connection module; the insulating shell is coated outside the metal shell, a first channel, a second channel positioned behind the first channel and a third channel connected with the first channel and the second channel are arranged between the insulating shell and the metal shell, at least part of the third channel is recessed inwards relative to the first channel and the second channel, when external water vapor flows into the third channel from the first channel, the water vapor is not easy to climb to the second channel along the third channel, so that the external water vapor can be accumulated in the third channel, the water vapor flowing backwards is reduced, the waterproof effect of the electric connector is improved, meanwhile, the flow path of the external water vapor can be prolonged by the third channel which is recessed inwards, the longer the flow path is, the more easily the external water vapor is accumulated between the insulating shell and the metal shell, and the water vapor flowing backwards is reduced, the waterproof effect of the electric connector is increased.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of the electrical connector of the present invention;

FIG. 2 is a perspective view of the inner and outer injection molded parts of FIG. 1;

FIG. 3 is a cross-sectional view A-A of the inner injection molded part of FIG. 2;

fig. 4 is a simplified plan view of the terminal and insulator assembly of fig. 1;

FIG. 5 is a partial cross-sectional view of the electrical connection module of FIG. 1;

FIG. 6 is a perspective view of the electrical connection module and the metal shell of FIG. 5;

FIG. 7 is a perspective assembly view of the electrical connection module and the metal shell of FIG. 6;

FIG. 8 is a schematic perspective view of an insulating housing covering the electrical connection module and the metal shell of FIG. 6;

FIG. 9 is a cross-sectional view of the electrical connector of FIG. 8 taken along B-B;

FIG. 10 is an enlarged view of a portion of FIG. 9;

FIG. 11 is a cross-sectional view of the electrical connector of FIG. 8 taken along C-C;

fig. 12 is a partially enlarged view of fig. 11.

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

electrical connector 100

Electric connection module A

Inner injection A1 outer injection A2

Upper grounding piece 1a, upper abutting part 10 and lower grounding piece 1b

Lower abutment 11

Contact portion 210 of first section 21 of terminal 2

Bent portion 230 of third segment 23 of second segment 22

Guide connection part 231

Middle shielding sheet 3 insulating body 4

Upper 4a and lower 4b insulator bases 40

Tongue 41 channel 410 perforation 411

The rear seat 42 presses the block 420 to limit the slot 421

Tongue 44 of groove 43 between bumps 422

Base 45

Metal shell B

The first housing 5 is butted against the butting portion 51 of the chamber 50

Connecting portion 52 mounting portion 53

The second housing 6 covers the end 610 of the part 61

Opening 611 and extension 63 of body 62

Notch 64

Overflow prevention groove 71 of accommodating cavity 70 of insulating shell 7

Accommodating groove 72

Waterproof ring 8

Waterproof piece 9a and waterproof piece 9b

Circuit board 200

Ground terminal G differential signal terminal S power terminal P

Reserved terminal V low-speed terminal D

First channel C1 second channel C2 third channel C3

First part X1 second part X2 third part X3

Fourth channel C4 fifth channel C5

[ 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. 7 and fig. 9, an electrical connector 100 according to an embodiment of the present invention is mounted on a circuit board 200 in an electronic device (not shown), and the electrical connector 100 is configured to electrically cooperate with a mating connector (not shown) so as to transmit signals to the electronic device. The electrical connector 100 has an electrical connection module a electrically engaged with the mating connector to transmit signals. The electrical connector 100 further has a metal shell B disposed outside the electrical connection module a and an insulating housing 7 disposed outside the metal shell B. The electrical connector 100 has a waterproof ring 8 disposed on the insulating housing 7, and a waterproof block 9a disposed on the electrical connection module a.

Referring to fig. 1 and 2, the electrical connection module a has an inner injection molding part a1 and an outer injection molding part a2, the inner injection molding part a1 is first formed by a first injection molding, and then the outer injection molding part a2 is filled and covers the inner injection molding part a1 by a second injection molding.

Referring to fig. 1, 2 and 3, the inner injection molding part a1 has an upper grounding plate 1a and a lower grounding plate 1b spaced from each other vertically, two rows of terminals 2 are disposed between the upper grounding plate 1a and the lower grounding plate 1b, and a middle shielding plate 3 is disposed between the two rows of terminals 2. The inner injection molding member a1 further has an upper insulating block 4a and a lower insulating block 4b, the upper insulating block 4a and the upper row of the terminals 2, the upper grounding piece 1a are integrated by the first injection molding, and at the same time, the lower insulating block 4b and the middle shielding piece 3, the lower row of the terminals 2 and the lower grounding piece 1b are also integrated by the first injection molding.

Referring to fig. 3 and 5, the upper insulating block 4a and the lower insulating block 4b are combined and matched up and down to form a base 40, a tongue piece 41 extending forward from the base 40, and a rear end seat 42 located behind the base 40. The thickness of the base 40 is greater than that of the tongue 41 so that the two are stepped, and the rear seat 42 is spaced apart from the base 40 so that a groove 43 is formed therebetween. Two rows of pressing blocks 420 are protruded from the lower surface of the rear end seat 42. The rear end of the rear seat 42 has a row of limiting grooves 421, and the limiting grooves 421 penetrate through the upper surface and the rear surface of the rear seat 42. Every two adjacent limiting grooves 421 are concavely arranged on the rear end seat 42 to form a convex block 422.

Referring to fig. 1, fig. 2 and fig. 3, a through groove 410 is recessed from the front end surface of the tongue piece 41, the through groove 410 is located between the upper and lower plate surfaces of the tongue piece 41 and extends to the rear end of the tongue piece 41, a through hole 411 is recessed from the plate surface of the tongue piece 41, and the through hole 411 is located at the connection position of the tongue piece 41 and the base 40 and is communicated with the through groove 410. When moulding plastics for the second time, the plastic of outer injection moulding A2 is from the preceding terminal surface entering of tongue 41 logical groove 410 reaches the rear end of tongue 41, from perforation 411 can observe whether the plastic of outer injection moulding A2 has arrived the rear end of tongue 41 is favorable to examining whether the effect of moulding plastics for the second time is good.

Referring to fig. 1, 2 and 9, the upper grounding plate 1a is exposed on the upper surface of the base 40, and the upper grounding plate 1a has two upper contact portions 10 protruding from the upper surface of the base 40 for electrically contacting with the metal shell B. The lower grounding piece 1B is exposed from the lower surface of the base 40, and the lower grounding piece 1B has two lower abutting portions 11 protruding from the lower surface of the base 40 for electrically abutting against the metal shell B.

Referring to fig. 1, fig. 2 and fig. 4, the terminals 2 in the upper and lower rows correspond to each other one by one. Each row of the terminals 2 is respectively provided with a ground terminal G, a pair of differential signal terminals S for transmitting USB3.0 signals, a power terminal P, a reserved terminal V, a pair of low-speed terminals D for transmitting USB2.0 signals, a reserved terminal V1, a power terminal P, a pair of differential signal terminals S for transmitting USB3.0 signals, and a ground terminal G from left to right.

Referring to fig. 2, fig. 3 and fig. 4, each of the terminals 2 has a first section 21, a second section 22 extending backward from the first section 21, and a third section 23 extending backward from the second section 22. The first section 21 is fixed to the base 40 and the tongue 41, and the first section 21 has a contact portion 210, and the upper and lower rows of the contact portion 210 are respectively exposed on the upper and lower plate surfaces of the tongue 41 and are in contact with air. In each row of the contact portions 210, the center-to-center distances L1 between two adjacent contact portions 210 are equal. The second section 22 is completely exposed in the intermediate groove 43, the third sections 23 are fixed to the rear seat 42, each third section 23 has a bending portion 230 extending downward, and a guiding portion 231 extending downward and vertically from the bending portion 230 for surface soldering with the circuit board 200. In each pair of the differential signal terminals S, the center distance between the two second segments 22 is L2, the center distance between the two bent portions 230 is L3, and the center distance between the two conducting portions 231 is L4, wherein L2 is smaller than L1, L3 is equal to L1, and L4 is equal to L1, and the impedance of the pair of the differential signal terminals S is adjusted and optimized at different positions by adjusting the center distance between the two differential signal terminals S.

Referring to fig. 1, 5 and 7, the terminal 2 is bent from a horizontal state to a vertical state at the bent portion 230. The bent portions 230 of two rows of the terminals 2 are arranged in two front and rear rows, wherein the bent portions 230 of the terminals 2 at the upper row are located at the front row, and the bent portions 230 of the terminals 2 at the lower row are located at the rear row. The guiding parts 231 of the two rows of terminals 2 extend out of the lower surface of the rear end seat 42, and two rows of front and rear are formed on the lower surface of the rear end seat 42, wherein the guiding parts 231 of the lower row of terminals 2 are located in the front row, and the guiding parts 231 of the upper row of terminals 2 are located in the rear row. Each of the pressing blocks 420 presses one of the guiding portions 231 downward, so that the circuit board 200 is prevented from generating a rebound force on the guiding portion 231 to warp the guiding portion 231, and the welding flatness of the guiding portion 231 can be better controlled.

Referring to fig. 1, 3 and 5, in the first injection molding process, a positioning mold (not shown) is first used to clamp and position two sides of each of the bending portions 230 of the rear row, and then plastic is filled to form the rear end seat 42 to embed and fix the bending portions 230. The positioning mold (not shown) clamps the bending portion 230 at the rear row to prevent the bending portion from being shifted due to the impact of the plastic of the rear seat 42. The plastic of the rear end seat 42 is provided to the positioning mold, so that the limiting grooves 421 are formed between two adjacent bending portions 230, each of the bumps 422 is located between two adjacent limiting grooves 421, and the bending portions 230 of the terminals 2 are embedded and arranged in a one-to-one correspondence manner, thereby facilitating the fixing effect of the terminals 2 on the rear end seat 42.

Referring to fig. 2 and 4, after the upper insulating block 4a and the lower insulating block 4b are assembled, a second injection molding is performed, the outer injection molding piece a2 fills and covers the tongue piece 41 to form a tongue plate 44, two rows of the contact portions 210 are exposed on the upper and lower plate surfaces of the tongue plate 44, the outer injection molding piece a2 fills and covers the base 40 to form the base 45, but the outer injection molding piece a2 does not cover the rear end seat 42. The upper insulating block 4a, the lower insulating block 4b and the outer injection molding part a2 form a complete insulating body 4, and the insulating body 4 is respectively the tongue plate 44, the base 45 arranged in a step with the tongue plate 44 and the rear end seat 42 from front to back. The rear end seat 42 and the base 45 are spaced apart from each other, and the space groove 43 is provided therebetween for accommodating the waterproof block 9 a.

Referring to fig. 5 and 6, the metal shell B has a first shell 5 and a second shell 6, and the first shell 5 is a hollow tubular seamless structure with front and rear openings, which can be formed by drawing. The first housing 5 is mounted to the base 45 from the front to the rear, and the second housing 6 is mounted to the first housing 5 from the top to the bottom.

Referring to fig. 6, 7 and 9, the front end of the first housing 5 has a butt-joint portion 51, the butt-joint portion 51 is elliptical and surrounds the front ends of the tongue plate 44 and the base portion 45 and is spaced from the front ends of the tongue plate 44 and the base portion 45 to form a butt-joint cavity 50 for receiving and butting the butt-joint connector, and the tongue plate 44 extends forward out of the butt-joint cavity 50.

Referring to fig. 6, fig. 7 and 9 illustrate a connecting portion 52 bent inward from the abutting portion 51, and a mounting portion 53 horizontally extending rearward from the connecting portion 52, wherein an outer surface of the mounting portion 53 is stepped with an outer surface of the abutting portion 51. The mounting portion 53 surrounds and abuts the periphery of the base portion 45, and is electrically abutted to the upper abutting portion 10 and the lower abutting portion 11.

Referring to fig. 6, 7 and 9, the second housing 6 is disposed outside the mounting portion 53 and spaced apart from the connecting portion 52. The front end of the second housing 6 has a covering part 61, and the covering part 61 covers the upper part of the mounting part 53 and the left and right sides of the mounting part 53, and both can be fixed by spot welding, but other fixing methods can be used as long as the covering part 61 is fixed to the mounting part 53. The covering part 61 has two ends 610, and the two ends 610 are not connected with each other, so an opening 611 is formed between the two ends 610, the mounting part 53 is exposed in the opening 611, and the waterproof block 9a is located behind the opening 611. A fourth channel C4 is formed between the cover 61 and the mounting part 53, and the fourth channel C4 is in communication with the intermediate groove 43 and is located in front of the waterproof block 9 a.

Referring to fig. 6, 7 and 8, the second housing 6 further includes a main body 62 located behind the covering portion 61, and the main body 62 covers the upper portion of the intermediate groove 43 and the upper portion of the rear end seat 42 and is fixed to the rear end seat 42. Extending downward from two sides of the main body 62 are respectively an extending portion 63, electrically contacting the middle shielding plate 3 and forming a ground path with the circuit board 200. The two extending portions 63 cover both sides of the rear end seat 42, respectively. A gap 64 is formed between the extending portion 63 and the covering portion 61, and the two gaps 64 are respectively located at two sides of the intermediate groove 43.

Referring to fig. 7, 8 and 9, after the first housing 5 and the second housing 6 are mounted and fixed on the insulating body 4, an insulating housing 7 is formed by third injection molding. The plastic of the insulating housing 7 covers the whole first housing 5, except that part of the extension portion 63 extends out of the insulating housing 7 and is in ground conduction with the circuit board 200, the rest of the second housings 6 are covered by the plastic of the insulating housing 7, the plastic of the insulating housing 7 does not enter the intermediate slot 43, but the plastic of the insulating housing 7 is filled in the two gaps 64, so that the left side wall and the right side wall of the intermediate slot 43 are formed.

Referring to fig. 9, 10 and 11, even though the metal shell B and the insulating housing 7 are integrally formed by third injection molding, a gap may still exist between the insulating housing 7 and the metal shell B, and external moisture may enter the electronic device through the gap. The gap between the abutting portion 51 and the insulating housing 7 forms a first passage C1. The gap between the outer surface of the covering portion 61 and the insulating housing 7 forms a second passage C2. The first housing 5, the second housing 6 and the insulating housing 7 together form a third channel C3, wherein the third channel C3 is formed by a first portion X1, a second portion X2 and a third portion X3, the first portion X1 is formed by a gap between the insulating housing 7 and the connecting portion 52, the second portion X2 is formed by a gap between the mounting portion 53 between the connecting portion 52 and the covering portion 61 and the insulating housing 7, and the third portion X3 is formed by a gap between a front end surface of the covering portion 61 and the insulating housing 7. The third channel C3 connects the first channel C1 and the second channel C2, and as can be observed from fig. 10 and 12, the first portion X1 is turned inward and extended, and the third portion X3 is turned outward and extended, so that the third channel C3 has two turning points, which is beneficial to extending the path of the third channel C3, and when external moisture enters the third channel C3 through the first channel C1, the longer the path of the third channel C3 is, the less easy the external moisture enters the second channel C2, thereby effectively reducing the external moisture from entering the electronic device, and increasing the waterproof effect of the electrical connector 100. Meanwhile, the third part X3 is folded and extended outwards, so that external water vapor cannot easily climb outwards along the third part X3, and the external water vapor stops in the third channel C3. The second portion X2 is recessed inward relative to the first channel C1 and the second channel C2, and when external moisture flows into the third channel C3 from the first channel C1, the moisture is not easy to climb to the second channel C2 along the third channel C3, so that the external moisture can be accumulated in the second portion X2, the external moisture is reduced from flowing backward, and the waterproof effect of the electrical connector 100 is improved.

Referring to fig. 10 and 11, the second portion X2 is in communication with the fourth channel C4, and the waterproof block 9a is disposed behind the fourth channel C4, so that the external moisture can be prevented from flowing backwards, and the waterproof effect of the electrical connector 100 can be improved. Referring to fig. 9, a fifth channel C5 is further disposed between the first housing 5 and the insulating housing 7, the fifth channel C5 is communicated with the intermediate groove 43 through the opening 611, and the waterproof block 9a is disposed behind the second channel C2 to prevent water vapor from flowing backwards, thereby increasing the waterproof effect of the waterproof electrical connector 100.

Referring to fig. 8, 9 and 11, the insulating housing 7 forms a receiving cavity 70 at the front end of the abutting portion 51, surrounding the tongue portion 44, and the receiving cavity 70 is communicated with the abutting cavity 50. When the mating connector is inserted into the electrical connector 100, the mating connector first enters the receiving cavity 70 and then enters the mating cavity 50.

Referring to fig. 1 and 12, an anti-overflow groove 71 is concavely disposed on the outer surface of the insulating housing 7 and outside the receiving cavity 70, and a receiving groove 72 is concavely disposed on the bottom surface of the anti-overflow groove 71, and a waterproof ring 8 is injection molded in the receiving groove 72 to prevent external water vapor from entering the electronic device from the outer surface of the insulating housing 7. The outer surface of the insulating housing 7, the bottom surface of the overflow preventing groove 71 and the bottom surface of the receiving groove 72 are stepped stepwise. The anti-overflow groove 71 is used for preventing the plastic of the waterproof ring 8 from overflowing to the outer surface of the insulating shell 7 in the injection molding process of the waterproof ring 8.

Referring to fig. 9, 10 and 12, after the third injection molding of the insulating housing 7 is completed, a glue dispensing process is used to fill the intermediate groove 43 with waterproof glue, the waterproof glue forms the waterproof block 9a in the intermediate groove 43, and the second section 22 is completely embedded in the waterproof block 9 a. Since the intermediate groove 43 is communicated with the fourth channel C4, the waterproof glue enters the fourth channel C4 from the intermediate groove 43 to form a waterproof member 9b for preventing the water vapor from flowing backwards, thereby increasing the waterproof effect of the electrical connector 100.

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

1. the third channel C3 connects the first channel C1 and the second channel C2, the first portion X1 turns inward and extends, and the third portion X3 turns outward and extends, so that the third channel C3 has two turning points, which is beneficial to extending the path of the third channel C3, when external moisture enters the third channel C3 through the first channel C1, the longer the path of the third channel C3 is, the less easily the external moisture enters the second channel C2, thereby effectively reducing the external moisture from entering the electronic device, and increasing the waterproof effect of the electrical connector 100.

2. The third portion X3 is outwardly turned and extended, so that the external moisture is not liable to climb out along the third portion X3, thereby stopping the external moisture in the third channel C3.

3. The second portion X2 is recessed inward relative to the first channel C1 and the second channel C2, and when external moisture flows into the third channel C3 from the first channel C1, the moisture is not easy to climb to the second channel C2 along the third channel C3, so that the external moisture can be accumulated in the second portion X2, the external moisture is reduced from flowing backward, and the waterproof effect of the electrical connector 100 is improved.

4. From the preceding terminal surface of tongue 41 is to the recessed logical groove 410 that establishes of back, leads to the groove 410 and is located between the upper and lower face of tongue 41 and extend to the rear end of tongue 41, certainly the face of tongue 41 is recessed to establish a perforation 411, perforation 411 is located tongue 41 with the junction of base 40 and with lead to groove 410 and be linked together. When moulding plastics for the second time, the plastic of outer injection moulding A2 is from the preceding terminal surface entering of tongue 41 logical groove 410 reaches the rear end of tongue 41, from perforation 411 can observe whether the plastic of outer injection moulding A2 has arrived the rear end of tongue 41 is favorable to examining whether the effect of moulding plastics for the second time is good.

5. In each pair of the differential signal terminals S, the center distance between the two second segments 22 is L2, the center distance between the two bent portions 230 is L3, and the center distance between the two conducting portions 231 is L4, wherein L2 is smaller than L1, L3 is equal to L1, and L4 is equal to L1, and the impedance of the pair of the differential signal terminals S is adjusted and optimized at different positions by adjusting the center distance between the two differential signal terminals S.

6. The waterproof glue forms the waterproof block 9a in the intermediate groove 43, and the second section 22 is completely embedded in the waterproof block 9 a. Since the intermediate groove 43 is communicated with the fourth channel C4, the waterproof glue enters the fourth channel C4 from the intermediate groove 43 to form a waterproof member 9b for preventing the water vapor from flowing backwards, thereby increasing the waterproof effect of the electrical connector 100.

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 electric connection module is used for electrically connecting the butting connector;

the metal shell is arranged on the electric connection module, and the upper surface of the metal shell is provided with a plane;

the insulating shell is wrapped outside the metal shell, a first channel, a second channel located behind the first channel and a third channel connected with the first channel and the second channel are arranged between the insulating shell and the metal shell, and a part of the third channel is located between the plane and the insulating shell and is inwards sunken relative to the first channel and the second channel.

2. The electrical connector of claim 1, wherein: the metal shell comprises a first shell and a second shell which are arranged in a front-back mode, the first shell is provided with a butt joint part, the butt joint part and the electric connection module are arranged at intervals to form a butt joint cavity for accommodating the butt joint connector, a connection part is bent inwards at the rear end of the butt joint part and extends, an installation part extends backwards from the connection part and is abutted to the electric connection module, and at least part of the second shell is arranged outside the installation part and is arranged at intervals with the connection part.

3. The electrical connector of claim 2, wherein: the insulating housing, the first housing and the second housing are integrally injection-molded, the first channel is arranged between the butt joint part and the insulating housing, the second channel is arranged between the mounting part and the insulating housing, and the third channel is arranged between the second housing and the connecting part.

4. The electrical connector of claim 2, wherein: the second shell is abutted to the outside of the mounting part, a fourth channel is arranged between the second shell and the mounting part and communicated with the third channel, and a waterproof piece is arranged in the fourth channel.

5. The electrical connector of claim 4, wherein: the electric connection module is provided with a waterproof block which is arranged behind the fourth channel and integrally formed with the waterproof piece.

6. The electrical connector of claim 2, wherein: the installation department encircles the cladding electricity and connects the module, the second casing has an opening, it has a waterproof piece to connect the module to connect electrically, waterproof piece is located open-ended rear.

7. The electrical connector of claim 2, wherein: the second shell is provided with a notch, the notch is located behind the second channel, and the insulating shell enters the notch.

8. The electrical connector of claim 7, wherein: the second shell is provided with an extension part which is positioned behind the gap, and the extension part extends out of the insulating shell to form a grounding channel with an external element.

9. The electrical connector of claim 1, wherein: the electric connection module is provided with an insulating body, the insulating body comprises a base part and a tongue plate, the tongue plate extends forwards from the base part and is arranged in a step mode with the base part, the metal shell is provided with a mounting part which is inwards concave and is abutted against the base part, and at least part of the third channel is arranged between the mounting part and the insulating shell.

10. The electrical connector of claim 9, wherein: the insulating body is provided with a rear end seat which is positioned behind the base and arranged at an interval with the base, and the electric connection module is further provided with a waterproof block which is arranged between the base and the rear end seat.

11. The electrical connector of claim 10, wherein: the terminals are arranged on the insulating body, each terminal is provided with a first section, a second section and a third section from front to back, the first sections are fixed on the base and the tongue plate, the second sections are all fixed on the waterproof block, the third sections are fixed on the rear end seat, each first section is provided with a contact part exposed on the surface of the tongue plate, the terminals are provided with a pair of signal terminals, and the center distance between the two contact parts in the pair of signal terminals is larger than that between the two second sections.

12. The electrical connector of claim 11, wherein: each third section is provided with a guide connection part extending out of the rear end seat, and the center distance between the two guide connection parts is larger than that between the two second sections in the pair of signal terminals.

13. The electrical connector of claim 1, wherein: the electric connection module is provided with an insulating body and a row of terminals arranged on the insulating body, the front end of each terminal is provided with a contact part which is electrically contacted with the butting connector, the rear end of each terminal is provided with a conductive connection part which extends out of the insulating body and is electrically conducted with an external element, each terminal is provided with a bending part bent downwards and positioned between the contact part and the conductive connection part, the insulating body is provided with a plurality of limiting grooves, and each limiting groove is positioned between every two adjacent bending parts.

14. The electrical connector of claim 13, wherein: a convex block is arranged between the two limiting grooves, and the bent part is embedded in the convex block.

15. The electrical connector of claim 13, wherein: the plurality of terminals have a pair of differential signal terminals in which the distance between the centers of the two contact portions is equal to the distance between the centers of the two bent portions.

16. The electrical connector of claim 1, wherein: the electric connection module is provided with an inner injection molding piece and an outer injection molding piece coated on the inner injection molding piece, the inner injection molding piece is provided with a tongue piece and a plurality of terminals respectively exposed on the surface of the tongue piece, the front end of the tongue piece is backwards and concavely provided with a through groove between the upper surface and the lower surface of the tongue piece, and a through hole is concavely arranged on the surface of the tongue piece and communicated with the through groove.

17. The electrical connector of claim 16, wherein: the inner injection molding piece is provided with a base, the base is arranged in a step mode with the tongue piece, and the through hole is formed in the joint of the tongue piece and the base.

18. The electrical connector of claim 17, wherein: the electric connection module is further provided with a grounding piece fixed on the base, the surface of the grounding piece is convexly provided with a butting part, the outer injection molding piece wraps the base, and the butting part protrudes out of the outer injection molding piece and is butted with the metal shell.

19. The electrical connector of claim 1, wherein: the waterproof ring is further provided, a containing groove is concavely arranged on the outer surface of the insulating shell and used for containing and limiting the waterproof ring, and an anti-overflow groove is arranged between the containing groove and the outer surface of the insulating shell.

20. The electrical connector of claim 19, wherein: the outer surface of the insulating shell, the bottom surface of the overflow preventing groove and the bottom surface of the containing groove are step-by-step in shape.