CN109687203B

CN109687203B - Electrical connector

Info

Publication number: CN109687203B
Application number: CN201811501700.3A
Authority: CN
Inventors: 陈志林; 彭建民; 胡德芳
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2018-12-05
Filing date: 2018-12-10
Publication date: 2020-10-30
Anticipated expiration: 2038-12-10
Also published as: CN109687203A

Abstract

The invention discloses an electric connector, which is used for electrically connecting a circuit board and comprises a base part and a tongue plate positioned in front of the base part, wherein a first terminal and a second terminal are accommodated in the tongue plate and extend into the base part, the first terminal is provided with a first welding pin to be welded with the circuit board, the second terminal is provided with a second welding pin to be welded with the circuit board, a shielding sheet is arranged at the base part and positioned between the first terminal and the second terminal, the shielding sheet extends at least one grounding pin to be electrically connected with the circuit board, the grounding pin and the first welding pin or the second welding pin are arranged in a row in the transverse direction, at least one conducting part extends from the grounding pin, a metal shell covers the base part, the metal shell is provided with at least one welding part to be welded with the conducting part, so that the metal shell is electrically connected with a grounding circuit of the circuit board through the conducting part, the metal shell is grounded, the shielding function of, the space of the circuit board occupied by the electric connector is reduced, and the intensive layout of the circuit board is facilitated.

Description

Electrical connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector, and more particularly, to an electrical connector of an interface type.

[ background of the invention ]

Chinese patent application No. CN201710809496.0 discloses an interface connector. This connector includes, an insulation pedestal, and the cover is located the shell of insulation pedestal is located many first terminals, many second terminals and a grounding lug of insulation pedestal are many first terminals have a first weld part respectively, and are many the second terminal has a second weld part respectively, and is a plurality of second weld part is with a plurality of two rows are welded to a circuit board through SMT's mode around the first weld part. The front side and the rear side of shell respectively integrative extend have two fillets with the circuit board welds, make the shell carries out ground connection, the rear end of grounding lug be equipped with a plurality of grounding feet with the circuit board welds, and is a plurality of the grounding foot is located a plurality of first weld part is with a plurality of between the second weld part.

Because the connector is in the homogeneous body of front side and rear side of shell extends there the leg makes the shell needs whole the installation on the circuit board, promptly the shell needs whole the cover the circuit board leads to the shell below other electronic component can't be installed to the circuit board, thereby makes the connector has taken the great space of circuit board is unfavorable for the intensive overall arrangement of circuit board, and the ground connection leg is located first weld part with between the second weld part, increased first weld part with distance between the second weld part makes the welding area that the circuit board corresponds increases, has further wasted the space of circuit board. Secondly, because the leg is bigger than the size of the first welding part, the size of the welding hole corresponding to the circuit board is bigger, and because the leg and the welding hole have dimensional tolerance, when the leg is assembled to the welding hole, because of the tolerance after assembly, an assembly gap is easy to appear between the leg and the welding hole, so that the welding of the leg and the welding hole is not firm, and the welding of the first welding part and the second welding part is influenced, and the electric connection of the connector and the circuit board is not firm, thereby the electric connection performance of the connector is influenced. Furthermore, because the side punching press of shell and bending type form the leg not only can make the manufacturing process of shell is loaded down with trivial details, produces more waste material in the punching press process, increases the cost of production, but also can reduce wholly the shielding effect of connector reduces the shell is right the protection of connector inner structure, debris and dust also pass through easily the opening that the shell punching press formed gets into inside the connector.

Therefore, there is a need for an improved electrical connector that overcomes the above problems.

[ summary of the invention ]

In view of the problems in the prior art, an object of the present invention is to provide an electrical connector that reduces the space occupied by the electrical connector on the circuit board by welding the conductive portion of the grounding pin of the shielding plate to the welding portion of the metal shell to ground the metal shell, so as to save the space of the circuit board and ensure the shielding effect of the metal shell.

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

in one aspect, the present invention provides an electrical connector for electrically connecting a circuit board, including an insulating body including a base portion and a tongue plate located in front of the base portion, at least one first terminal and at least one second terminal received in the tongue plate and extending into the base portion, the first terminal is provided with a first welding pin and is welded with the circuit board, the second terminal is provided with a second welding pin and is welded with the circuit board, a shielding sheet is arranged at the base part and is positioned between the first terminal and the second terminal, the shielding piece extends at least one grounding pin to be electrically connected with the circuit board, the grounding pin and the first welding pin or the second welding pin are arranged in a row in the transverse direction, a guide part is extended from the grounding pin, a metal shell cover is arranged on the base part, and the metal shell is provided with at least one welding part and welded with the guide part.

Further, the upper side of the grounding pin extends upwards to form the guide connection part, and the guide connection part and the welding part are subjected to spot welding.

Furthermore, the shielding plate is provided with a main body part which is embedded in the base part and extends forwards to the tongue plate, the grounding pin comprises a bending part which is bent and extended from the main body part, the bending part extends downwards to form a middle part and extends downwards from the lower side of the middle part to form a grounding part which is welded on the circuit board, and the conducting part extends upwards from the upper side of the middle part.

Further, the guide connection part and the grounding part are positioned on the same plane in the vertical direction.

Furthermore, the projection of the guide connection part and the projection of the grounding part at least partially overlap when viewed along the projection direction from top to bottom.

Furthermore, two buckling parts respectively protrude from two opposite sides of the main body part in a transverse protruding mode, the two buckling parts respectively protrude out of the side edge of the tongue plate, and the transverse distance from the buckling parts to the center line of the tongue plate is smaller than the transverse distance from the guide connecting part to the center line of the tongue plate.

Further, the guide connection part is flat.

Furthermore, the first terminal is provided with a first contact part exposed on the upper surface of the tongue plate and a first connecting part connecting the first contact part and the first welding pin, the second terminal is provided with a second contact part exposed on the lower surface of the tongue plate and a second connecting part connecting the second contact part and the second welding pin, a slot is arranged between the tongue plate and the base in a penetrating manner, the first connecting part and the second connecting part are partially positioned in the slot, and a waterproof piece is filled in the slot and covers the peripheries of the first connecting part and the second connecting part.

Furthermore, the first terminal and the second terminal are provided with a plurality of first welding pins which are respectively arranged at the upper side and the lower side of the tongue plate, the plurality of first welding pins are arranged in a row, the plurality of second welding pins are arranged in another row, and two grounding pins extending from the two sides of the shielding plate are respectively positioned at the outermost sides of the plurality of second welding pins.

Further, a step portion is arranged between the base portion and the tongue plate, an upper shielding piece is arranged on the upper surface of the step portion, a lower shielding piece is arranged on the lower surface of the step portion, a shielding shell is provided with a fixing portion wrapping the rear end of the step portion, an accommodating portion extends forwards from the fixing portion, the inner diameter of the accommodating portion is larger than that of the fixing portion, the step portion and the tongue plate are at least partially located in the accommodating portion, and the metal shell covers the fixing portion and is electrically connected with the fixing portion.

Furthermore, an insulating shell is formed on the periphery of the shielding shell and the metal shell in an injection molding mode, the metal shell is provided with at least one fixing piece, and the fixing piece penetrates through the side face of the insulating shell.

Furthermore, the accommodating part surrounds the front section of the step part and the rear section of the tongue plate to form a first butt space, the front section of the tongue plate protrudes out of the first butt space and enters the insulating shell, the insulating shell surrounds the front section of the tongue plate to form a second butt space, the second butt space is located in front of the first butt space, and the tongue plate penetrates through the first butt space and the second butt space and extends forwards out of the insulating shell.

Furthermore, the shielding plate extends two grounding pins at intervals, the two grounding pins extend to form two guide connection parts which are respectively exposed at two sides of the base part, the metal shell is provided with two opposite side walls which shield two sides of the base part, and each side wall is provided with the welding part which is fixed with the guide connection part positioned at the same side in a spot welding manner.

Furthermore, the metal shell has a roof and two the lateral wall links to each other, the roof runs through and is equipped with two through-holes, the integrative protruding two pylons of establishing of upper surface of basal portion are located two lead and connect the portion between, two the pylon corresponds to insert and establish and be fixed in two the through-hole.

In another aspect, the present invention further provides an electrical connector for electrically connecting a circuit board, including an insulating body including a base and a tongue plate located in front of the base; the first terminal and the second terminal are respectively positioned at the upper side and the lower side of the tongue plate and extend into the base part, the first terminal is provided with a first welding pin to be welded with the circuit board, and the second terminal is provided with a second welding pin to be welded with the circuit board; the shielding sheet is arranged at the base part and positioned between the first terminal and the second terminal, at least one grounding pin extends from the shielding sheet to be electrically connected with the circuit board, the grounding pin and the first welding pin or/and the second welding pin are arranged in a row along the transverse direction, and a guide connection part extends from the grounding pin; and the metal shell is covered on the base part and provided with at least one welding part which is welded with the guide connection part, and the metal shell is not provided with a welding leg which is welded with the circuit board.

Further, the guide connection part is flat.

Furthermore, a step part is arranged between the base part and the tongue plate, a shielding shell is provided with a fixing part which wraps the rear end of the step part, an accommodating part extends forwards from the fixing part, the inner diameter of the accommodating part is larger than that of the fixing part, the step part and the tongue plate are at least partially positioned in the accommodating part, and the metal shell covers the fixing part and is electrically connected with the fixing part.

Compared with the prior art, the invention has the following beneficial effects:

the shielding sheet is provided with the grounding pin which is electrically connected with the circuit board so as to ground the shielding sheet and extend the guide part from the grounding pin, the metal shell is provided with the welding part and welded with the guide part, so that the metal shell is electrically connected with the grounding circuit of the circuit board through the guide part so as to ground the metal shell, the shielding function of the metal shell is ensured, meanwhile, the metal shell is not required to be provided with a welding pin and welded with the circuit board, so that the metal shell is not required to be arranged on the circuit board, namely, the metal shell does not wholly cover the circuit board, thereby reducing the space occupied by the electric connector on the circuit board, being beneficial to the intensive layout of the circuit board, the grounding pin is arranged in a row with the first welding pin or the second welding pin, and shortening the distance between the first welding pin and the second welding pin, effectively reduced the electric connector corresponds the welding area of circuit board, further saved the space of circuit board, and the metal-back only sets up the weld part with the welding of guide connection portion consequently avoids setting up the leg and inserts the problem that the equipment clearance appears in the weld hole of circuit board and causes the welding insecure has effectively improved first welding leg with second welding leg with the electric connection of circuit board, furthermore, the metal-back need not to set up the leg so simplified the manufacturing process of metal-back makes metal-back shaping simple structure, has saved the material, the cost is reduced to can avoid the metal-back forms the opening because of setting up the leg, has strengthened electric connector's shielding effect and shielding effect.

[ description of the drawings ]

FIG. 1 is an exploded perspective view of an electrical connector and a circuit board according to the present invention;

FIG. 2 is a perspective partially exploded view of the electrical connector and the circuit board of the present invention;

FIG. 3 is a schematic view of the metal shell of the electrical connector of the present invention mounted on the insulating body;

FIG. 4 is a perspective assembly view of the electrical connector of the present invention soldered to a circuit board;

FIG. 5 is a schematic view of the connector and the circuit board of FIG. 4 after being turned 180 degrees;

FIG. 6 is a cross-sectional view taken along A-A of FIG. 4;

FIG. 7 is a schematic view of the structure of the metal shell, the middle shielding plate and the circuit board of the electrical connector of the present invention;

FIG. 8 is a partial cross-sectional view of the metal shell of FIG. 7 welded to an intermediate shield segment;

fig. 9 is a rear view of fig. 8.

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

[ 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.

As shown in fig. 1, 2 and 4, the electrical connector 100 is a Type-C connector, and the electrical connector 100 is mounted on a circuit board 200 and includes an insulating body 1, a plurality of first terminals 2 and a plurality of second terminals 3, an upper shielding plate 4, a lower shielding plate 5, a shielding plate 6, a shielding shell 7, a metal shell 8, an insulating shell 9, a waterproof member 94 and a waterproof ring 95.

As shown in fig. 1 and 2, the insulation body 1 is integrally formed by an upper insulation block 11, a lower insulation block 12 and a covering block 13 through injection molding, the insulation body 1 includes a base portion 14, a step portion 15 located in front of the base portion 14, a slot 17 is provided between the base portion 14 and the step portion 15, the slot 17 separates the base portion 14 from the step portion 15, and a tongue plate 16 extends forward from the step portion 15. The thickness of the base portion 14 in the vertical direction is larger than the thickness of the step portion 15 in the vertical direction, and the thickness of the step portion 15 in the vertical direction is larger than the thickness of the tongue plate 16 in the vertical direction. Two pylons 141 are integrally protruded from the upper surface of the base 14, and the pylons 141 are configured to be engaged with the metal shell 8.

As shown in fig. 1, 2 and 5, a plurality of the first terminals 2 are arranged on the upper side of the tongue plate 16 and extend into the base portion 14, and a plurality of the second terminals 3 are arranged on the lower side of the tongue plate 16 and extend into the base portion 14. Each of the first terminals 2 includes a first contact portion 21 exposed on the upper surface of the tongue plate 16, a first soldering foot 22 soldered to the circuit board 200, and a first connection portion 23 connecting the first contact portion 21 and the first soldering foot 22, the first contact portion 21 is fixedly disposed on the upper surface of the tongue plate 16, and the first connection portion 23 is fixedly disposed on the step portion 15, extends into the base portion 14, and is partially disposed in the slot 17. Each of the plurality of second terminals 3 includes a second contact portion 31 exposed on the lower surface of the tongue plate 16, a second soldering pin 32 soldered to the circuit board 200, and a second connection portion 33 connecting the second contact portion 31 and the second soldering pin 32, the second contact portion 31 is fixedly disposed on the lower surface of the tongue plate 16, and the second connection portion 33 is fixedly disposed on the step portion 15, extends into the base portion 14, and is partially disposed in the slot 17. The first contact portion 21 and the second contact portion 31 are both used for electrically connecting with a mating connector (not shown), the first soldering pin 22 and the second soldering pin 32 are both electrically connected with the circuit board 200 by surface soldering, and in other embodiments, the first soldering pin 22 and the second soldering pin 32 may be electrically connected in other manners. The first welding feet 22 are arranged in one row, the second welding feet 32 are arranged in another row, and the second welding feet 32 are positioned in front of the first welding feet 22.

As shown in fig. 1, 2 and 5, the upper shielding sheet 4 is fixed in the stepped portion 15 and partially exposed to the upper surface of the stepped portion 15, the upper shielding sheet 4 is located above the first connecting portion 23, the lower shielding sheet 5 is fixed in the stepped portion 15 and partially exposed to the lower surface of the stepped portion 15, the lower shielding sheet 5 is located below the second connecting portion 33, and both the upper shielding sheet 4 and the lower shielding sheet 5 are electrically connected to the inner wall surface of the shielding shell 7. The shielding plate 6 is disposed on the base portion 14 and extends forward to the tongue portion 16, the shielding plate 6 is located between the first terminals 2 and the second terminals 3, and the shielding plate 6 is also located between the upper shielding plate 4 and the lower shielding plate 5. The shielding plate 6 has a main body portion 61, and the main body portion 61 is embedded in the base portion 14 and extends forward through the step portion 15 to the tongue portion 16. A buckling part 62 transversely protrudes from two opposite sides of the main body part 61 respectively, the two buckling parts 62 respectively protrude the side edge of the tongue plate 16 for butting with the butting connector, a gap 63 is formed between the two buckling parts 62 and the main body part 61 respectively, and the front edge of the main body part 61 is more forward than the front edge of the buckling part 62. Two grounding pins 64 are formed by bending and extending downwards from two sides of the rear end of the main body 61 at intervals and are exposed out of two sides of the base 14, the two grounding pins 64 respectively comprise bending portions 641 which are formed by extending transversely from two sides of the rear end of the main body 61 and bending downwards, an intermediate portion 642 is formed by extending downwards and backwards from the bending portions 641, and a grounding portion 643 formed by extending downwards from the lower side of the intermediate portion 642 is welded to the circuit board 200. The bending portion 641 and the middle portion 642 are located in the base portion 14, and the grounding portion 643 is located at a lower end of the grounding pin 64 and extends out of the base portion 14 to be soldered to the circuit board 200 for electrically connecting to a grounding circuit of the circuit board 200. Two guiding portions 65 are respectively formed by extending upward from the upper sides of the two middle portions 642, the two guiding portions 65 respectively extend upward and are exposed at two sides of the base portion 14 for being welded with the metal shell 8, the two pylons 141 are located between the two guiding portions 65, the two grounding pins 64 and the plurality of second welding pins 32 are arranged in a row in the transverse direction and are respectively located at the outermost sides of the plurality of second welding pins 32, in another embodiment, the two grounding pins 64 and the plurality of first welding pins 22 are also arranged in a row in the transverse direction, in other embodiments, the two grounding pins 64 and the first welding pins 22 and the second welding pins 32 are also arranged in a row in the transverse direction. The ground connection portion 643 is located below the ground connection portion 65, the ground connection portion 65 and the ground connection portion 643 are located on the same plane in the vertical direction, a projection of the ground connection portion 643 overlaps a projection of the ground connection portion 65 as viewed in a projection direction from above, the projection of the ground connection portion 643 is larger than and completely covers the projection of the ground connection portion 643, the ground connection portion 65 is flat, and in other embodiments, the ground connection portion 65 may have another shape. The transverse distance from the buckling part 62 to the center line of the tongue plate 16 is smaller than the transverse distance from the grounding foot 64 to the center line of the tongue plate 16.

As shown in fig. 2 and 6, the shielding shell 7 is located in front of the slot 17, the shielding shell 7 has a fixing portion 71 covering the rear end of the step portion 15, an accommodating portion 72 extends forward from the fixing portion 71, the inner diameter of the accommodating portion 72 is larger than that of the fixing portion 71, the accommodating portion 72 surrounds the peripheries of the front section of the step portion 15 and the rear section of the tongue plate 16 to form a first docking space 73, and the front end of the tongue plate 16 protrudes out of the first docking space 73. The upper side of the inner wall surface of the fixing portion 71 is electrically connected to the upper shield plate 4, the lower side of the inner wall surface of the fixing portion 71 is electrically connected to the lower shield plate 5, the metal shell 8 covers the fixing portion 71, and the upper side of the outer wall surface of the fixing portion 71 is electrically connected to the metal shell 8.

As shown in fig. 2, 3, 7, 8 and 9, the metal shell 8 is covered above the base 14, the slot 17 and the fixing portion 71, the metal shell 8 includes two opposite side walls 81 and a top wall 82 connecting the two side walls 81, the two side walls 81 are covered on two sides of the base 14, the two side walls 81 respectively have a welding portion 811, the welding portion 811 is located outside the lead-in portion 65, and the two lead-in portions 65 are respectively fixed to the welding portion 811 located on the same side by spot welding, so that the metal shell 8 is in direct contact with the shielding plate 6. In this embodiment, the base portion 14 and the soldering portion 811 are exposed at the soldering portion 64, but in other embodiments, the soldering portion 811 and the soldering portion 64 may be embedded in the base portion for spot welding, since the shielding plate 6 is provided with the grounding portion 643 to be electrically connected with the grounding circuit of the circuit board 200, the metal shell 8 is provided with the soldering portion 811 and the soldering portion 65 for spot welding to be electrically connected with the grounding circuit of the circuit board 200, so as to ground the metal shell 8, and the metal shell 8 can be grounded without providing a soldering pin soldered with the circuit board 200. In this embodiment, the welding portion 811 is located on the side wall 81, and in other embodiments, the welding portion 811 may be located at other positions of the metal shell 8 as long as it can be spot-welded to the lead-in portion 65. The front section of the metal shell 8 covers the upper side of the outer wall surface of the fixing portion 71 and both sides of the outer wall surface, and the metal shell 8 is electrically connected to the fixing portion 71. The top wall 82 is provided with two through holes 821, the two pylons 141 are correspondingly inserted and fixed in the two through holes 821 to fix the metal shell 8 to the base 14, two sides of the metal shell 8 are respectively provided with a fixing member 83, and the two fixing members 83 are connected with other devices (not shown) to fix the electrical connector 100.

As shown in fig. 1, 2, 5 and 6, the insulating housing 9 is injection molded around the shielding shell 7 and the metal shell 8 and fills the gap between the insulating body 1, the shielding shell 7 and the metal shell 8, and the two fixing members 83 transversely penetrate the side surface of the insulating housing 9. The front section of the tongue plate 16 protrudes out of the first abutting space 73 and enters the insulating housing 9, the insulating housing 9 surrounds the front section of the tongue plate 16 to form a second abutting space 91, the second abutting space 91 is located in front of the first abutting space 73, and the tongue plate 16 passes through the first abutting space 73 and the second abutting space 91 and extends forwards out of the insulating housing 9. Two sides of the rear section of the insulating housing 9 are respectively provided with a fixing leg 92, the two fixing legs 92 and the plurality of first welding legs 22 are arranged in a row and are respectively located at the outermost side of the plurality of first welding legs 22, and the grounding part 643 is located in front of the fixing legs 92. The slot 17 is not filled during injection molding of the insulating housing 9, after the injection molding of the insulating housing 9, the waterproof member 94 fills the slot 17 from bottom to top and covers the periphery of the plurality of first connecting portions 23 and the plurality of second connecting portions 33 located in the slot 17, and the waterproof member 94 further fills the gaps between the first terminals 2, the second terminals 3 and the shielding sheets 6 and the insulating body 1, so that liquid cannot enter the front section of the electric connector 100 through the rear section of the electric connector 100, and the electric connection between the first terminals 2 and the second terminals 3 and the butting connector is affected. The front section of the insulating shell 9 is provided with an annular groove 93, and the waterproof ring 95 is embedded in the annular groove 93.

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

(1) the shielding plate 6 has the grounding pin 64, the grounding pin 64 has the grounding portion 643 extending out of the base portion 14 and electrically connecting to the circuit board 200 to ground the shielding plate 6, the conductive portion 65 extends from the grounding pin 64, the metal case 8 has the soldering portion 811 and is spot-welded to the lead portion 65, so that the metal case 8 is electrically connected to the ground line of the circuit board 200 through the lead portion 65, thereby grounding the metal case 8, ensuring the shielding function of the metal case 8, and simultaneously, the metal case 8 does not need to be provided with a solder fillet to be soldered with the circuit board 200, so that the metal case 8 does not need to be mounted on the circuit board 200, that is, the metal shell 8 does not entirely cover the circuit board 200, so that the space occupied by the electrical connector 100 on the circuit board 200 is reduced, and the dense layout of the circuit board 200 is facilitated.

(2) The grounding portion 643 is aligned with the first soldering pins 22 or the second soldering pins 32, so as to shorten the distance between the first soldering pins 22 and the second soldering pins 32, effectively reduce the soldering area of the electrical connector 100 corresponding to the circuit board 200, further save the space of the circuit board 200, and the metal shell 8 is not provided with soldering pins, thereby avoiding the problem of infirm soldering caused by assembly gaps when the soldering pins are inserted into the soldering holes of the circuit board 200, and effectively improving the electrical connection between the first soldering pins 22 and the second soldering pins 32 and the circuit board 200.

(3) The metal shell 8 does not need to be provided with the solder tails, so that the manufacturing process of the metal shell 8 can be simplified, the forming structure is simple, materials are saved, less materials are consumed, the cost is reduced, the metal shell 8 can be prevented from forming openings due to the arrangement of the solder tails, and the shielding effect of the electric connector 100 are enhanced.

(4) The upper side of the inner wall surface of the fixing portion 71 is electrically connected to the upper shielding plate 4, the lower side of the inner wall surface of the fixing portion 71 is electrically connected to the lower shielding plate 5, the upper side of the outer wall surface of the fixing portion 71 is electrically connected to the metal shell 8, and the metal shell 8 is fixed to the inner wall surface of the welding portion 811 through the guiding portion 65 by means of spot welding, so that the metal shell 8 is electrically connected to the ground line of the circuit board 200 through the guiding portion 65, and the ground effect of the electrical connector 100 is further enhanced.

(5) The two welding portions 811 are respectively fixed to the two guiding portions 65 by spot welding, so that the metal shell 8 and the shielding plate 6 are more stably contacted, and the grounding effect is better.

(6) The top wall 82 is provided with two through holes 821 in a penetrating manner, and the two pylons 141 are correspondingly inserted and fixed in the two through holes 821 to fix the metal shell 8 on the base 14, so that the metal shell 8 is firmly fixed on the insulation body 1, the metal shell 8 is prevented from being displaced to affect the connection stability of the welding portion 811 and the conductive portion 65, and the metal shell 8 can be stably grounded.

(7) The waterproof member 94 fills the slot 17 from bottom to top and covers the plurality of first connecting portions 23 and the plurality of second connecting portions 33 exposed from the slot 17, and the waterproof member 94 further fills the gaps between the first terminal 2, the second terminal 3, the shielding sheet 6 and the insulating body 1, so that liquid cannot enter the front section of the electrical connector 100 through the rear section of the electrical connector 100, thereby ensuring good electrical connection between the first terminal 2, the second terminal 3 and the butting connector, and effectively preventing water at the rear section and the bottom of the electrical connector 100.

(8) Insulating casing 9 injection moulding in shielding shell 7 with metal-back 8 is outer and fill insulator 1 shielding shell 7 and clearance between the metal-back 8 has promoted wholly electric connector 100's water-proof effects, insulating casing 9's anterior segment is equipped with annular groove 93, waterproof circle 95 inlays to be located annular groove 93 makes electric connector 100 anterior segment can be effectual waterproof.

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 electrically connecting a circuit board, comprising:

the insulating body comprises a base part and a tongue plate positioned in front of the base part;

the tongue plate is accommodated in the base, the tongue plate is provided with a first welding pin, the first welding pin is welded with the circuit board, and the second welding pin is welded with the circuit board;

the shielding sheet is arranged on the base and positioned between the first terminal and the second terminal, at least one grounding pin is extended from the shielding sheet to be electrically connected with the circuit board, the grounding pin and the first welding pin or the second welding pin are arranged in a row in the transverse direction, and a guide connection part is formed by upward extending from the upper side of the grounding pin;

a metal shell cover is arranged on the base portion, the metal shell is provided with at least one welding portion, and the welding portion is located on the outer side of the guide connection portion and is welded with the guide connection portion.

2. The electrical connector of claim 1, wherein: the guide connection part and the welding part are in spot welding.

3. The electrical connector of claim 1, wherein: the shielding plate is provided with a main body part which is embedded in the base part and extends forwards to the tongue plate, the grounding pin comprises a bending part which is bent and extended from the main body part, the bending part extends downwards to form a middle part and extends downwards from the lower side of the middle part to form a grounding part which is welded on the circuit board, and the connecting part extends upwards from the upper side of the middle part.

4. The electrical connector of claim 3, wherein: the guide connection part and the grounding part are positioned on the same plane in the vertical direction.

5. The electrical connector of claim 3, wherein: and when viewed along the projection direction from top to bottom, the projection of the guide connection part and the projection of the grounding part are at least partially overlapped.

6. The electrical connector of claim 3, wherein: and the two buckling parts respectively protrude out of the side edge of the tongue plate in a transverse protruding manner, and the transverse distance from the buckling parts to the center line of the tongue plate is smaller than that from the guide part to the center line of the tongue plate.

7. The electrical connector of claim 1, wherein: the guide connection part is flat.

8. The electrical connector of claim 1, wherein: the first terminal is provided with a first contact part exposed on the upper surface of the tongue plate and a first connecting part connecting the first contact part and the first welding foot, the second terminal is provided with a second contact part exposed on the lower surface of the tongue plate and a second connecting part connecting the second contact part and the second welding foot, a slot is arranged between the tongue plate and the base in a penetrating mode, the first connecting part and the second connecting part are partially located in the slot, and a waterproof piece is filled in the slot and covers the peripheries of the first connecting part and the second connecting part.

9. The electrical connector of claim 8, wherein: the first terminal with the second terminal all has a plurality ofly, and is a plurality of first welding foot is arranged into one row, and is a plurality of the second welding foot is arranged into another row, certainly the both sides of shielding piece extend two the ground connection foot is located a plurality ofly respectively the outside of second welding foot.

10. The electrical connector of claim 1, wherein: a step part is arranged between the base part and the tongue plate, an upper shielding piece is arranged on the upper surface of the step part, a lower shielding piece is arranged on the lower surface of the step part, a shielding shell is provided with a fixing part which wraps the rear end of the step part, a containing part extends forwards from the fixing part, the inner diameter of the containing part is larger than that of the fixing part, the step part and the tongue plate are at least partially positioned in the containing part, and the metal shell covers the fixing part and is electrically connected with the fixing part.

11. The electrical connector of claim 10, wherein: an insulating shell is formed on the periphery of the shielding shell and the metal shell in an injection molding mode, the metal shell is provided with at least one fixing piece, and the fixing piece penetrates through the side face of the insulating shell.

12. The electrical connector of claim 11, wherein: the accommodating part surrounds the front section of the step part and the rear section of the tongue plate to form a first butt space, the front section of the tongue plate protrudes out of the first butt space and enters the insulating shell, the insulating shell surrounds the front section of the tongue plate to form a second butt space, the second butt space is located in front of the first butt space, and the tongue plate penetrates through the first butt space and the second butt space and extends forwards out of the insulating shell.

13. The electrical connector of claim 1, wherein: the shielding sheet extends two grounding pins at intervals, the two grounding pins extend to form two guide connection parts which are respectively exposed at two sides of the base part, the metal shell is provided with two opposite side walls which shield the two sides of the base part, and each side wall is provided with the welding part which is fixed with the guide connection part positioned at the same side in a spot welding manner.

14. The electrical connector of claim 13, wherein: the metal shell is provided with a top wall and two side walls which are connected, the top wall is provided with two through holes in a penetrating mode, the upper surface of the base portion is integrally provided with two column bases in a protruding mode and located between the two guide connecting portions, and the two column bases are correspondingly inserted and fixed in the two through holes.

15. An electrical connector for electrically connecting a circuit board, comprising:

the first terminal and the second terminal are respectively positioned at the upper side and the lower side of the tongue plate and extend into the base part, the first terminal is provided with a first welding pin to be welded with the circuit board, and the second terminal is provided with a second welding pin to be welded with the circuit board;

the shielding sheet is arranged at the base part and positioned between the first terminal and the second terminal, at least one grounding pin extends from the shielding sheet to be electrically connected with the circuit board, the grounding pin and the first welding pin or/and the second welding pin are arranged in a row along the transverse direction, and a guide connection part extends from the grounding pin;

and the metal shell is covered on the base part and provided with at least one welding part which is welded with the guide connection part, and the metal shell is not provided with a welding leg which is welded with the circuit board.

16. The electrical connector of claim 15, wherein: and the upper side of the grounding pin extends upwards to form the guide connection part, and the guide connection part and the welding part are welded in a spot mode.

17. The electrical connector of claim 15, wherein: the guide connection part is flat.

18. The electrical connector of claim 15, wherein: the shielding plate is provided with a main body part which is embedded in the base part and extends forwards to the tongue plate, the grounding pin comprises a bending part which is bent and extended from the main body part, the bending part extends downwards to form a middle part and extends downwards from the lower side of the middle part to form a grounding part which is welded on the circuit board, and the connecting part extends upwards from the upper side of the middle part.

19. The electrical connector of claim 15, wherein: the first terminal is provided with a first contact part exposed on the upper surface of the tongue plate and a first connecting part connecting the first contact part and the first welding foot, the second terminal is provided with a second contact part exposed on the lower surface of the tongue plate and a second connecting part connecting the second contact part and the second welding foot, a slot is arranged between the tongue plate and the base in a penetrating mode, the first connecting part and the second connecting part are partially located in the slot, and a waterproof piece is filled in the slot and covers the peripheries of the first connecting part and the second connecting part.

20. The electrical connector of claim 15, wherein: a step part is arranged between the base part and the tongue plate, a shielding shell is provided with a fixing part which wraps the rear end of the step part, a containing part extends forwards from the fixing part, the inner diameter of the containing part is larger than that of the fixing part, the step part and the tongue plate are at least partially positioned in the containing part, and the metal shell covers the fixing part and is electrically connected with the fixing part.