CN112886293B

CN112886293B - Electric connector and manufacturing method thereof

Info

Publication number: CN112886293B
Application number: CN202110065583.6A
Authority: CN
Inventors: 冯晓
Original assignee: Zhongshan Yide Electronics Co ltd
Current assignee: Zhongshan Yide Electronics Co ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2022-10-25
Anticipated expiration: 2041-01-19
Also published as: CN112886293A

Abstract

The invention discloses an electric connector and a manufacturing method thereof.A through groove and a cross beam positioned behind the through groove are arranged on an insulating body, and the cross beam is provided with a plurality of embedded grooves which are arranged in a row; first terminal and second terminal inlay and bury in insulator, a plurality of first terminals and a plurality of groove one-to-one setting of establishing of inlaying, first terminal includes first connecting portion, first welding portion that extends is located the place ahead that inlays and establishes the groove that corresponds from first connecting portion buckling backward, the second terminal includes the second connecting portion, extend to inlay in the fixed part of crossbeam from the second connecting portion backward, from the second welding portion that the fixed part is buckled to extend and is located the crossbeam rear, all not connect material bridge and interval arrangement become one row and be located logical groove between adjacent first connecting portion and the second connecting portion, it supplies the first connecting portion of tool location to lead to the groove when bending first welding portion, along the projection of the first connecting portion of front and back direction and rather than the projection that inlays and establish the groove rather than corresponding at least partial overlapping, in order to simplify manufacturing process and effectively keep overall structure intensity.

Description

Electric connector and manufacturing method thereof

[ technical field ] A

The present invention relates to an electrical connector and a method for manufacturing the same, and more particularly, to an electrical connector inserted into a circuit board and a method for manufacturing the same.

[ background of the invention ]

In the existing connector with double rows of socket type soldering pins, the manufacturing process of the connector usually removes the common material belt at the tail ends of the double rows of terminals, bends the tail ends of each row of terminals to form bent soldering pins, and finally performs injection molding on the two rows of terminals to form an insulating body. The double rows of jack-type welding pins are bent and then divided into the front row and the rear row, so that the two rows of welding pins cannot be connected to the same material belt for injection molding, when the terminal is injected into the insulating body, in order to enable the two rows of terminals to be stably fixed into an injection mold together, the two rows of terminals need to be connected into a whole by adding a material bridge, then injection molding is further carried out, and finally the material bridge is cut, so that the connector is formed.

However, since the solder leg of the terminal is bent and then electroplated, electroplating speed is slow, manufacturing cost is increased, the solder leg of the terminal is bent and then injection-molded, the solder leg and the part of the terminal which is not bent are located on different planes, difficulty in injection molding is increased, the true position degree of the solder leg is easily affected, and the quality of the solder leg of the connector is affected, and the terminal is easily deformed or even damaged when a material bridge is cut due to the fact that the terminal is weak.

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

[ summary of the invention ]

In view of the problems faced by the background art, an object of the present invention is to provide an electrical connector and a manufacturing method of the electrical connector, in which an insulation body is provided with an embedded groove and a through groove, so that a first terminal and a second terminal can be positioned by a rear tape during injection molding, and the bending of the first terminal and the second terminal can be avoided when the first terminal and the second terminal are bent after the injection molding is completed, thereby simplifying the manufacturing process and effectively maintaining the overall structural strength.

In order to realize the purpose, the invention adopts the following technical scheme: an electrical connector, comprising: the insulating body is provided with a through groove and a cross beam positioned behind the through groove, the cross beam is provided with a plurality of embedding grooves, and the embedding grooves are arranged in a row along the left-right direction; a plurality of first terminals and a plurality of second terminals inlay bury in insulator, it is a plurality of first terminal and a plurality of inlay and establish groove one-to-one setting, each first terminal includes a first connecting portion, from first connecting portion is buckled backward and is extended a first weld part, each second terminal includes a second connecting portion, from second connecting portion extends a fixed part backward, from the fixed part is buckled backward and is extended a second weld part, first connecting portion with the second connecting portion along controlling the direction interval arrangement and being located the logical groove, it supplies a tool location to lead to the groove when bending first weld part first connecting portion, adjacent first connecting portion with all not connect the material bridge between the second connecting portion, inlay the fixed part bury in the crossbeam, the second weld part is located the rear of crossbeam, first weld part is located the place ahead of inlaying establishing the groove that corresponds, along the fore-and-aft direction the projection of first connecting portion overlaps rather than the projection of inlaying establishing the groove that corresponds at least partially.

Further, the first welding portion is perpendicular to the first connecting portion, the second welding portion is perpendicular to the second connecting portion, and the plurality of first welding portions and the plurality of second welding portions are arranged in two rows in the front-rear direction.

Further, the insulating body comprises a base portion and a butt-joint portion extending forwards from the base portion, the first terminal comprises a first contact portion extending forwards from the first connection portion, the second terminal comprises a second contact portion extending forwards from the second connection portion, and the first contact portions and the second contact portions are located at the butt-joint portion and are arranged in two rows in the up-down direction.

Further, the basal portion comprises a middle portion and a side portion extending backwards from the left side and the right side of the middle portion respectively, the left side and the right side of the cross beam are connected with the two side portions respectively, and the middle portion, the two side portions and the cross beam are arranged in a surrounding mode to form the through groove.

Further, two the equal ranging back of lateral part surpasss the crossbeam, and with the crossbeam encloses to establish and forms one and let the space, it is located to let the space the rear that leads to the groove, it is used for supplying to let the space second weld part buckle.

Furthermore, a positioning groove is concavely arranged at the bottom of the middle part and is positioned below the cross beam, and the thickness of the cross beam in the vertical direction is smaller than that of the middle part in the vertical direction.

Further, it is a plurality of inlay and establish the groove certainly the diapire of crossbeam is recessed to be established, each inlay and establish the groove and include a groove top surface and two sides of relative setting in the left and right sides direction, the top surface of first connecting portion with the groove top surface is located the coplanar in the upper and lower direction, each inlay and establish the groove and run through in the front and back direction the crossbeam.

Further, a width of the first welding part in the left-right direction is equal to a width of the groove top surface in the left-right direction.

Furthermore, a plurality of stop blocks are arranged on the bottom wall of the cross beam, and each stop block is correspondingly stopped on the lower surface of each fixing part.

Further, the length of the stopper extending in the front-rear direction is smaller than the length of the cross member extending in the front-rear direction.

In another aspect, the present invention further provides a method for manufacturing an electrical connector, comprising the steps of: step S1: providing a metal plate, and stamping the metal plate to form a plurality of first terminals and a plurality of second terminals, wherein the tail ends of the first terminals and the second terminals are connected to a rear material belt together, and a material bridge is not connected between the first terminals and the second terminals; step S2: positioning the first terminals and the second terminals in an injection mold to form an insulating body in an injection molding mode, wherein the insulating body is provided with a through groove and a cross beam positioned behind the through groove in a penetrating manner along the vertical direction, a plurality of embedding grooves are formed in the cross beam, the first terminals penetrate through the through groove backwards and are embedded in the embedding grooves in a one-to-one correspondence manner, the tail end of each first terminal protrudes out of the rear end face of the cross beam, each second terminal penetrates through the through groove backwards and is partially embedded in the cross beam, and the length of the tail end of each second terminal protruding out of the cross beam is greater than the length of the first terminal protruding out of the cross beam; and step S3: removing the rear material belt; and step S4: providing a jig to enter the through groove and fixing the upper and lower surfaces of the first terminals and the second terminals, bending the tail ends of the first terminals to be separated from the embedded groove to form a plurality of first welding parts, bending the tail ends of the second terminals to form a plurality of second welding parts, wherein the first welding parts are positioned in front of the cross beam, and the second welding parts are positioned behind the cross beam.

Further, in step S1, the front ends of the first terminals and the second terminals are commonly connected to a front tape, and in step S3, the front tape is removed.

Further, in step S2, the embedding groove is formed in the bottom wall of the cross beam, the embedding groove includes a groove top surface and two side surfaces oppositely disposed in the left-right direction, and the lower surface of the first terminal is exposed to the embedding groove.

Further, in step S2, a plurality of stoppers are formed at the bottom of the insulating body, and each stopper is correspondingly stopped on the lower surface of one of the second terminals.

Further, in step S4, the tip of the first terminal is bent downward by 90 degrees to form the first soldering portion, the tip of the second terminal is bent downward by 90 degrees to form the second soldering portion, and the plurality of first soldering portions and the plurality of second soldering portions are arranged in two rows in the front-rear direction.

Further, after step S1 and before step S2, the outer surfaces of the first terminal and the second terminal are subjected to plating treatment.

Compared with the prior art, the invention has the following beneficial effects: the tail ends of the first terminals and the second terminals are coplanar to be connected to the rear material belt together, the rear material belt fixedly connects the first terminals and the second terminals into a whole, so that a material bridge does not need to be arranged between the first terminals and the second terminals, and the material bridge does not need to be removed by cutting after the injection molding of the insulating body is completed, thereby not only preventing the first terminals and the second terminals from being damaged due to cutting, but also saving the process flow of cutting the material bridge, the insulating body is provided with the through grooves and the cross beams positioned behind the through grooves in an up-and-down direction in a penetrating way, the through grooves can be used for the jigs to enter to clamp and fix the upper and lower surfaces of the first connecting parts when the first welding parts are bent, and not only facilitating the bending of the first welding parts, and the jig is not clamped on the plastic, so that the insulating body is not stressed to deform or even break, the beam is provided with a plurality of embedded grooves which correspond to the first terminals one by one, after the injection molding is finished and before the first welding parts are bent, the first terminals pass through the through grooves backwards and are embedded in the embedded grooves one by one, the tail end of each first terminal protrudes out of the rear end surface of the beam, the rear material belt can be conveniently broken, the tail ends of the first terminals are prevented from being deviated due to the breakage of the rear material belt, the tail parts of the first terminals can be kept on the same horizontal plane, the bending is convenient, the bending angles of the first terminals are ensured to be the same, and the tail ends of the first terminals are bent, so that the first terminals are separated from the embedded grooves to form the first welding parts, it is a plurality of first weld part is located the place ahead of crossbeam, so the crossbeam does at the rear first weld part provides the protection, and is a plurality of the fixed part inlays to be located the crossbeam is, and is a plurality of the second weld part is located the rear of crossbeam, the crossbeam is fixed the fixed part does the second terminal provides the support, so that the second weld part is difficult for rocking the deformation, guarantees a plurality ofly the normal position degree of second weld part does benefit to the second weld part inserts the welding hole to the circuit board.

[ description of the drawings ]

FIG. 1 is a perspective view of the electrical connector of the present invention;

FIG. 2 is an exploded perspective view of FIG. 1;

FIG. 3 is a schematic view of FIG. 2 after being turned upside down;

FIG. 4 is a schematic view of the first and second terminals connecting the front and rear strips;

fig. 5 is a schematic view of an insulative body injection molded over the first and second terminals of fig. 4;

FIG. 6 is a schematic view of FIG. 5 with the front and back strips removed;

fig. 7 is a schematic view of the terminal of the first terminal of fig. 6 after being bent to form a first soldering portion;

fig. 8 is a schematic view of the second terminal of fig. 7 after the end is bent to form a second solder portion;

fig. 9 is a schematic view of the semi-finished product of the insulator, the first terminal and the second terminal of fig. 8 assembled to the metal shell;

FIG. 10 is a rear view of FIG. 1;

fig. 11 isbase:Sub>A sectional view taken alongbase:Sub>A-base:Sub>A of fig. 10.

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.

Referring to fig. 1 and fig. 2, an electrical connector 100 according to the present invention is configured to be mounted on a circuit board (not shown), where the electrical connector 100 includes an insulating body 10, a plurality of first terminals 3 and a plurality of second terminals 4 embedded in the insulating body 10, and a metal shell 20 sleeved outside the insulating body 10, the electrical connector 100 is an HDMI connector in this embodiment, and in other embodiments, the electrical connector 100 may be an electrical connector 100 of another specification that is mounted on the circuit board by an in-line insertion method.

Referring to fig. 2, 3 and 9, the insulating housing 10 includes a base 1 and a mating portion 2 extending forward from the base 1, the mating portion 2 is tongue-shaped, and the first terminal 3 and the second terminal 4 are exposed from the mating portion 2. The base 1 comprises a middle portion 11, the middle portion 11 is connected with the butt-joint portion 2 forwards, a side portion 12 extending backwards from the left side and the right side of the middle portion 11 respectively, a cross beam 13 is located behind the middle portion 11, the left side and the right side of the cross beam 13 are connected with two side portions 12 respectively, the middle portion 11, the two side portions 12 and the cross beam 13 jointly enclose to form a through groove 14, the through groove 14 penetrates through the insulation body 10 in the up-down direction, and the through groove 14 is located in front of the cross beam 13. Two equal ranging back of lateral part 12 surpasss crossbeam 13, and with crossbeam 13's rear end face encloses to establish and forms one and gives way space 15, give way space 15 towards the rear opening, lead to groove 14 crossbeam 13 and give way space 15 and equal along the width of left right direction. From a constant head tank 111 is established in the bottom concavity of intermediate part 11, constant head tank 111 be used for with metal casing 20 cooperates, constant head tank 111 is located the below of crossbeam 13, crossbeam 13 is less than along the thickness of upper and lower direction intermediate part 11 is along the thickness of upper and lower direction, crossbeam 13 is less than two along the thickness of upper and lower direction equally lateral part 12 is along the thickness of upper and lower direction.

Referring to fig. 3 and 11, a plurality of embedding grooves 131 are concavely formed in the bottom wall of the cross beam 13, the embedding grooves 131 are arranged in a row along the left-right direction, the plurality of embedding grooves 131 are arranged in one-to-one correspondence to the plurality of first terminals 3, each of the embedding grooves 131 includes a groove top surface 1311 and two side surfaces 1312 oppositely arranged in the left-right direction, the embedding groove 131 is formed by only the groove top surface 1311 and the two side surfaces 1312, the embedding groove 131 is arranged to be open downward, the embedding groove 131 is arranged to penetrate through the cross beam 13 in the front-back direction, the plurality of groove top surfaces 1311 are located on the same horizontal plane in the up-down direction, and each of the embedding grooves 131 is communicated with the through groove 14 and the abdicating space 15 in the front-back direction.

Referring to fig. 3 and 11, a plurality of stoppers 132 are further protruded from the bottom wall of the cross beam 13, the plurality of stoppers 132 are disposed corresponding to the plurality of second terminals 4 one by one, the plurality of stoppers 132 are arranged in a row along the left-right direction, in this embodiment, the stoppers 132 are preferably rectangular, and in other embodiments, the stoppers 132 may have other shapes. The length of the stop block 132 extending in the front-back direction is less than the length of the cross beam 13 extending in the front-back direction, specifically, the front end surface of the stop block 132 is flush with the front end surface of the cross beam 13, and the rear end surface of the stop block 132 is located in front of the rear end surface of the cross beam 13. The plurality of stoppers 132 and the plurality of fitting grooves 131 are provided at intervals in the left-right direction.

Referring to fig. 2 and 4, the first terminals 3 and the second terminals 4 are embedded in the insulating body 10 by injection molding, the first terminals 3 are provided with 10 terminals, the second terminals 4 are provided with 9 terminals, each first terminal 3 includes a first connection portion 31, a first contact portion 32 extending forward and downward from the first connection portion 31, a first front end portion 33 extending forward and upward from the first contact portion 32, and a first welding portion 34 bending and extending backward and downward from the first connection portion 31. Each of the second terminals 4 includes a second connecting portion 41, a second contact portion 42 extending forward and upward from the second connecting portion 41, a second front end portion 43 extending forward and downward from the second contact portion 42, a fixing portion 44 extending backward from the second connecting portion 41, and a second soldering portion 45 bending and extending backward and downward from the fixing portion 44. The plurality of first connecting portions 31 and the plurality of second connecting portions 41 are arranged in a row at intervals in the left-right direction and are located in the through groove 14, no material bridge is connected between the adjacent first connecting portions 31 and the adjacent second connecting portions 41, and a jig (not shown) is provided for positioning the first connecting portions 31 when the first welding portions 34 are bent in the through groove 14. The plurality of first contact portions 32 are not provided in one-to-one alignment with the plurality of second contact portions 42 in the vertical direction, the plurality of first front end portions 33 and the plurality of second front end portions 43 are arranged in a row in the left-right direction, the plurality of first welding portions 34 are arranged in a row in the left-right direction, the plurality of second welding portions 45 are arranged in another row in the left-right direction, that is, the plurality of first welding portions 34 and the plurality of second welding portions 45 are arranged in two rows in the front-back direction, and the first welding portions 34 are located in front of the second welding portions 45.

Referring to fig. 3, 7 and 11, the plurality of first connecting portions 31 are suspended in the through slot 14, a top surface of each first connecting portion 31 is located on the same plane in the up-down direction, the plurality of first connecting portions 31 and the plurality of embedding slots 131 are arranged in a one-to-one correspondence, a projection of each first connecting portion 31 and a projection of the embedding slot 131 corresponding thereto are at least partially overlapped in the front-back direction, in this embodiment, the top surface of the first connecting portion 31 and the slot top surface 1311 are located on the same plane in the up-down direction, the first contacting portion 32 is formed by bending downward from the first connecting portion 31 and extending forward, the plurality of first contacting portions 32 are arranged in a row and exposed on a lower surface of the abutting portion 2, the first welding portions 34 are perpendicular to the first connecting portion 31, each first welding portion 34 is located in front of the corresponding embedding slot 131, and a width of the first welding portion 34 in the left-right direction is equal to a width of the slot top surface 1311 in the left-right direction.

Referring to fig. 3 and 6, the second contact portion 42 is formed by bending the second connection portion 41 upwards and extending forwards, and the second contact portions 42 are exposed on the upper surface of the abutting portion 2. The fixing portions 44 are embedded in the cross beam 13, each stopper 132 is correspondingly stopped on the lower surface of each fixing portion 44, so as to fix the second terminal 4 to the cross beam 13 more firmly, because the rear end surface of the stopper 132 is located in front of the rear end surface of the cross beam 13, a part of the lower surface of the fixing portion 44 is not blocked by the stopper 132, and therefore, when the second welding portion 45 is formed by bending downward, a certain deformation range exists between the fixing portion 44 and the cross beam 13, and the cross beam 13 is prevented from being broken when the second welding portion 45 is bent. The second welding portion 45 is perpendicular to the second connecting portion 41, and the second welding portion 45 is located behind the cross beam 13 and located in the abdicating space 15.

As follows, a method of manufacturing the electrical connector 100 will be described, including the steps of:

step S1: referring to fig. 4, a metal plate (not shown) is provided, the metal plate is stamped to form a plurality of first terminals 3 and a plurality of second terminals 4, ends of the plurality of first terminals 3 and the plurality of second terminals 4 are commonly connected to a back material belt 40, the first front end portions 33 of the plurality of first terminals 3 and the second front end portions 43 of the plurality of second terminals 4 are commonly connected to a front material belt 30, and no material bridge is connected between the first terminals 3 and the second terminals 4;

step S2: referring to fig. 3 and 5, the first terminal 3 and the second terminal 4 are positioned in an injection mold (not shown) to injection mold the insulation body 10, so that the insulation body 10 is provided with the through groove 14 and the beam 13 located behind the through groove 14 in a vertical direction, the beam 13 is provided with a plurality of embedding grooves 131, the embedding grooves 131 are formed in the bottom wall of the beam 13, the embedding grooves 131 include the groove top surface 1311 and two side surfaces 1312 oppositely arranged in a left-right direction, a plurality of the first terminals 3 pass through the through groove 14 backwards and are embedded in the plurality of the embedding grooves 131 one by one, the lower surface of the first terminal 3 is exposed in the embedding grooves 131, the end of each of the first terminals 3 protrudes from the rear end surface of the beam 13 and extends to the offset space 15, each of the second terminals 4 passes through the through groove 14 backwards and is partially embedded in the beam 13, the end of each of the second terminal 4 protrudes from the rear end surface of the beam 13 and extends to the offset space 15, and the length of each of the second terminal 4 protruding from the bottom end of the insulation body 132 is greater than the length of each of the corresponding block 13, and the end of each of the corresponding insulation body 10 is stopped at the bottom end of the corresponding stop 132;

and step S3: referring to fig. 5 and 6, the rear carrier tape 40 is removed, and then the front carrier tape 30 is removed;

and step S4: referring to fig. 6, 7 and 8, the jig (not shown) is provided, the jig enters the through groove 14 from above and below respectively and fixes the upper and lower surfaces of the plurality of first connecting portions 31 and the plurality of second connecting portions 41, the end of the first terminal 3 is bent downward by 90 degrees, the end of the first terminal 3 is separated from the embedding groove 131 to form the first welding portion 34, the plurality of first welding portions 34 are located in front of the cross beam 13, the end of the second terminal 4 is bent downward by 90 degrees to form the second welding portion 45, the plurality of second welding portions 45 are located behind the cross beam 13, and the plurality of first welding portions 34 and the plurality of second welding portions 45 are arranged in two rows in the front-back direction.

Step S5: referring to fig. 8 and 9, the semi-finished products of the insulating body 10, the first terminal 3 and the second terminal 4 are assembled into the metal shell 20 to form the electrical connector 100;

step S6: a plurality of first welding holes (not shown) corresponding to the plurality of first welding parts 34 one to one and a plurality of second welding holes (not shown) corresponding to the plurality of second welding parts 45 one to one are formed in the circuit board (not shown), and the row of first welding parts 34 and the row of second welding parts 45 of the electric connector 100 are inserted into the first welding holes and the second welding holes respectively, so that the electric connector 100 is stably inserted into the circuit board.

Referring to fig. 4, after step S1 and before step S2, the end of the first terminal 3 is not bent to form the first soldering portion 34, the end of the second terminal 4 is not bent to form the second soldering portion 45, and the surfaces of the first terminal 3 and the second terminal 4 are subjected to electroplating treatment, and since the end of the first connection portion 31 to the end of the first terminal 3 extends linearly in the front-back direction and the end of the second connection portion 41 to the end of the second terminal 4 extends linearly in the front-back direction, the end of the first connection portion 31 to the first terminal 3 and the end of the second connection portion 41 to the end of the second terminal 4 can be directly plated in a straight line during electroplating, so that the electroplating distance is reduced, and the difficulty of the electroplating process is reduced.

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

1. the ends of the plurality of first terminals 3 and the plurality of second terminals 4 are coplanar and are connected to the rear tape 40 together, the rear tape 40 fixedly connects the plurality of first terminals 3 and the plurality of second terminals 4 into a whole, so that no material bridge needs to be arranged between the first terminals 3 and the second terminals 4, and no material bridge needs to be removed by cutting after the injection molding of the insulation body 10 is completed, which not only can prevent the first terminals 3 and the second terminals 4 from being damaged by cutting, but also can save the process flow of cutting the material bridge, the insulation body 10 is provided with the through grooves 14 and the cross beams 13 located behind the through grooves 14 in a vertical direction, the through grooves 14 can allow jigs to enter to clamp and fix the upper and lower surfaces of the plurality of first connection portions 31 when the first welding portions 34 are bent, not only the bending of the first welding part 34 is facilitated, but also the jig is not clamped on the plastic, so that the insulation body 10 is not deformed or even broken by stress, the plurality of embedding grooves 131 corresponding to the first terminals 3 one by one are formed on the beam 13, after the injection molding is completed and before the first welding part 34 is bent, the plurality of first terminals 3 pass through the through groove 14 backwards and are embedded in the plurality of embedding grooves 131 one by one, the tail end of each first terminal 3 protrudes out of the rear end surface of the beam 13, the rear material belt 40 can be conveniently broken, the tail end of the first terminal 3 is prevented from being deviated due to the breakage of the rear material belt 40, the tail parts of the plurality of first terminals 3 can be kept on the same horizontal plane, the bending is facilitated, and the bending angles of the plurality of first terminals 3 are ensured to be the same, the tail ends of the first terminals 3 are bent to enable the first terminals to be separated from the embedding grooves 131 to form a plurality of first welding portions 34, the first welding portions 34 are located in front of the cross beam 13, the cross beam 13 provides protection for the first welding portions 34 at the rear, the fixing portions 44 are embedded in the cross beam 13, the second welding portions 45 are located at the rear of the cross beam 13, the cross beam 13 fixes the fixing portions 44 to support the second terminals 4, the second welding portions 45 are not prone to shaking and deforming, the rightness of the second welding portions 45 is guaranteed, and the second welding portions 45 can be inserted into welding holes of a circuit board conveniently.

2. The base 1 comprises the middle part 11, the side parts 12 extending backwards from the left and right sides of the middle part 11, the left and right sides of the beam 13 are connected with the two side parts 12, the middle part 11, the two side parts 12 and the beam 13 jointly enclose the through groove 14, and the middle part 11, the two side parts 12 and the beam 13 can provide protection for the first connecting part 31 and the second connecting part 41 in the through groove 14 from different directions in all directions.

3. Two lateral part 12 all extends backward and surpasss crossbeam 13, and with crossbeam 13 encloses to establish and forms abdication space 15, abdication space 15 is located crossbeam 13's rear can make things convenient for anchor clamps (not shown) to be right second welding part 45 bends, avoids anchor clamps collide insulator 10 leads to insulator 10 takes place to warp, damages.

4. The plurality of embedding grooves 131 are recessed from the bottom wall of the cross beam 13, each of the embedding grooves 131 includes the groove top surface 1311 and two side surfaces 1312 oppositely arranged in the left-right direction, so that the end of the first terminal 3 can be embedded in the embedding groove 131, the bottom surface of the end of the first terminal 3 can be exposed in the embedding groove 131, so that the end of the first terminal 3 can be conveniently separated from the embedding groove 131 when the first terminal 3 is bent, each of the embedding grooves 131 penetrates through the cross beam 13 in the front-back direction, the end of the first terminal 3 protrudes out of the rear end surface of the cross beam 13, and a bending fixture (not shown) can be conveniently used for clamping and fixing the end of the first terminal 3, so that the first welding part 34 can be conveniently formed by bending.

5. The width of the first welding part 34 in the left-right direction is equal to the width of the groove top surface 1311 in the left-right direction, so that the first welding part 34 can be just inserted into the insertion groove 131, and the first welding part 34 does not shake in the insertion groove 131.

6. The bottom wall of the cross beam 13 is provided with a plurality of stoppers 132, each stopper 132 is correspondingly stopped on the lower surface of each fixing portion 44, so that the fixing portions 44 can be prevented from falling off the cross beam 13, and the rear ends of the second terminals 4 can be prevented from shaking and deforming.

7. The length of the stopper 132 extending in the front-rear direction is smaller than the length of the cross beam 13 extending in the front-rear direction, so that a part of the lower surface of the fixing portion 44 is not shielded by the stopper 132, and therefore, when the second welding portion 45 is bent downward to form the second welding portion 45, a certain deformation range is formed between the fixing portion 44 and the cross beam 13, and the cross beam 13 is prevented from being broken when the second welding portion 45 is bent.

8. After the step S1 and before the step S2, the end of the first terminal 3 is not bent to form the first soldering portion 34, the end of the second terminal 4 is not bent to form the second soldering portion 45, and the surfaces of the first terminal 3 and the second terminal 4 are subjected to the plating treatment, so that the first connection portion 31 to the end of the first terminal 3 linearly extend in the front-rear direction, and the second connection portion 41 to the end of the second terminal 4 linearly extend in the front-rear direction, so that the end of the first connection portion 31 to the first terminal 3 and the end of the second connection portion 41 to the end of the second terminal 4 can be directly plated in a straight line during the plating, thereby speeding up the plating of the first terminal 3 and the second terminal 4, saving the manufacturing cost, reducing the plating path, and reducing the difficulty of the plating process.

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, comprising:

the insulating body is provided with a through groove and a cross beam positioned behind the through groove, the cross beam is provided with a plurality of embedding grooves, and the embedding grooves are arranged in a row along the left-right direction;

a plurality of first terminals and a plurality of second terminals inlay bury in insulator, it is a plurality of first terminal and a plurality of inlay and establish groove one-to-one setting, each first terminal includes a first connecting portion, from first connecting portion is buckled backward and is extended a first weld part, each second terminal includes a second connecting portion, from second connecting portion extends a fixed part backward, from the fixed part is buckled backward and is extended a second weld part, first connecting portion with the second connecting portion along controlling the direction interval arrangement and being located the logical groove, it supplies a tool location to lead to the groove when bending first weld part first connecting portion, adjacent first connecting portion with all not connect the material bridge between the second connecting portion, inlay the fixed part bury in the crossbeam, the second weld part is located the rear of crossbeam, first weld part is located the place ahead of inlaying establishing the groove that corresponds, along the fore-and-aft direction the projection of first connecting portion overlaps rather than the projection of inlaying establishing the groove that corresponds at least partially.

2. The electrical connector of claim 1, wherein: the first welding parts are perpendicular to the first connecting parts, the second welding parts are perpendicular to the second connecting parts, and the plurality of first welding parts and the plurality of second welding parts are arranged in two rows along the front-back direction.

3. The electrical connector of claim 1, wherein: the insulating body comprises a base and a pair of connecting parts extending forwards from the base, the first terminal comprises a first contact part extending forwards from the first connecting part, the second terminal comprises a second contact part extending forwards from the second connecting part, and the first contact parts and the second contact parts are positioned on the pair of connecting parts and are arranged in two rows along the vertical direction.

4. The electrical connector of claim 3, wherein: the basal portion comprises a middle portion and a side portion extending backwards from the left side and the right side of the middle portion respectively, the left side and the right side of the cross beam are connected with the two side portions respectively, and the middle portion, the two side portions and the cross beam are enclosed together to form the through groove.

5. The electrical connector of claim 4, wherein: two the equal ranging back of lateral part surpasss the crossbeam, and with the crossbeam encloses to establish and forms one and let the space, it is located to let the space the rear that leads to the groove, it is used for supplying to let the space second weld part buckle.

6. The electrical connector of claim 4, wherein: and a positioning groove is concavely arranged at the bottom of the middle part and is positioned below the cross beam, and the thickness of the cross beam in the vertical direction is smaller than that of the middle part in the vertical direction.

7. The electrical connector of claim 1, wherein: a plurality of inlay and establish the groove certainly the diapire of crossbeam is concave to be established, each inlay and establish the groove and include a groove top surface and two sides of relative setting in the left and right sides direction, the top surface of first connecting portion with the groove top surface is located the coplanar in upper and lower direction, each inlay and establish the groove and run through in the front and back direction the crossbeam.

8. The electrical connector of claim 7, wherein: the width of the first welding part in the left-right direction is equal to the width of the groove top surface in the left-right direction.

9. The electrical connector of claim 1, wherein: the bottom wall of the beam is provided with a plurality of stop blocks, and each stop block is correspondingly stopped on the lower surface of each fixing part.

10. The electrical connector of claim 9, wherein: the length of the stop block extending along the front-back direction is smaller than the length of the cross beam extending along the front-back direction.

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

step S1: providing a metal plate, and stamping the metal plate to form a plurality of first terminals and a plurality of second terminals, wherein the tail ends of the first terminals and the second terminals are connected to a rear material belt together, and a material bridge is not connected between the first terminals and the second terminals;

step S2: positioning the first terminals and the second terminals in an injection mold to form an insulating body in an injection molding mode, wherein the insulating body is provided with a through groove and a cross beam positioned behind the through groove in a penetrating manner along the vertical direction, a plurality of embedding grooves are formed in the cross beam, the first terminals penetrate through the through groove backwards and are embedded in the embedding grooves in a one-to-one correspondence manner, the tail end of each first terminal protrudes out of the rear end face of the cross beam, each second terminal penetrates through the through groove backwards and is partially embedded in the cross beam, and the length of the tail end of each second terminal protruding out of the cross beam is greater than the length of the first terminal protruding out of the cross beam;

and step S3: removing the rear material belt;

and step S4: providing a jig to enter the through groove and fixing the upper and lower surfaces of the first terminals and the second terminals, bending the tail ends of the first terminals to be separated from the embedded groove to form a plurality of first welding parts, bending the tail ends of the second terminals to form a plurality of second welding parts, wherein the first welding parts are positioned in front of the cross beam, and the second welding parts are positioned behind the cross beam.

12. The method of manufacturing an electrical connector of claim 11, wherein: in step S1, the front ends of the first terminals and the second terminals are commonly connected to a front tape, and in step S3, the front tape is removed.

13. The method of manufacturing an electrical connector of claim 11, wherein: in step S2, the embedding groove is formed in the bottom wall of the cross beam, the embedding groove includes a groove top surface and two side surfaces oppositely disposed in the left-right direction, and the lower surface of the first terminal is exposed to the embedding groove.

14. The method of manufacturing an electrical connector of claim 11, wherein: in step S2, a plurality of stoppers are formed at the bottom of the insulating body, and each stopper is correspondingly stopped on the lower surface of one of the second terminals.

15. The method of manufacturing an electrical connector of claim 11, wherein: in step S4, the tip of the first terminal is bent downward by 90 degrees to form the first soldering portion, the tip of the second terminal is bent downward by 90 degrees to form the second soldering portion, and the plurality of first soldering portions and the plurality of second soldering portions are arranged in two rows in the front-rear direction.

16. The method of manufacturing an electrical connector of claim 11, wherein: after step S1 and before step S2, the outer surfaces of the first terminal and the second terminal are subjected to plating treatment.