TW201810828A - Electrical connector and method of making the same - Google Patents

Abstract

An electrical connector includes an insulative housing, a number of contacts and a metal plate retained in the housing, and a metal shell attached to the housing. The contacts and the metal plate respectively have a number of cutting surfaces located at free ends. The cutting surfaces register in an up-and-down direction and located at a same plane.

Description

Electric connector and manufacturing method thereof

The present invention relates to an electrical connector, and in particular, to an electrical connector capable of being inserted in the reverse direction and a manufacturing method thereof.

For related know-how, please refer to a socket electrical connector disclosed in Chinese Mainland Invention Patent No. CN104466592. The socket electrical connector includes a first terminal, a second terminal, a middle shield sheet, an insulation bully problem, and a metal shell. A front end of a first contact portion of each first terminal is connected to a first tape, and a rear end of a first welding portion of each first terminal is connected to a second tape. The first terminal outer-molded insulating block forms a first terminal module and disconnects the first tape. A front end of the intermediate mask sheet is connected to a third material tape, and a first terminal is positioned above the intermediate mask sheet. An insulating body is overmolded outside the first terminal module and the intermediate cover sheet, and the second tape is disconnected. A plastic block is formed on the second terminal to form a second terminal module. A front end of a second contact portion of each second terminal is connected to a fourth strip, and a rear end of a second welding portion of each second terminal is connected. Fifth material tape, disconnect the fourth material tape and part of the fifth material tape. Position the second terminal module on the insulation body, and disconnect the third tape and the remaining fifth tape.

The connection and removal methods of such tapes are relatively complicated, complicated forming and complicated cutting, which is not conducive to mechanized production and takes time and labor.

Therefore, there is a need for an improved electrical connector to remedy the aforementioned shortcomings in the prior art.

The main purpose of the present invention is to provide an electrical connector and a manufacturing method thereof, which have a simple structure and a convenient manufacturing process.

The purpose of the present invention is achieved by the following technical solution: An electrical connector includes an insulating body, two rows of conductive terminals and reinforcing members provided on the insulating body, and a shielding case provided on the outside of the insulating body. The terminal and the reinforcing member have a cutting surface provided at a free end, and the cutting surface is flush in the up-down direction and is in the same plane.

The purpose of the present invention is achieved by the following technical solution: A method for manufacturing an electrical connector, including: S1. Provide two rows of conductive terminals and reinforcing members, the front ends of the two rows of conductive terminals are respectively connected with a first strip and A second material belt, the reinforcing member is connected to a fifth material belt, the first material belt and the second material belt sandwich the fifth material belt to form a three-layer structure superimposed on top of one another; S2. Said two rows of conductive terminals and reinforcing members are injection-molded to form an insulating body; S3. Cutting said first material tape, second material tape and fifth material tape; S4. Providing a shielding shell, covering said shielding shell Outside the insulating body.

Compared with the conventional technology, the present invention has the following effects: The material of the electrical connector of the present invention adopts a method of double-layer and three-layer superimposition molding at one time, which is convenient for cutting the material and has a simple process. In addition, the gap between the two rows of conductive terminals is prevented from entering the plastic.

The first figure is a perspective assembled view of the electrical connector of the present invention connected to a circuit board.

The second figure is a perspective assembled view of the electrical connector and the circuit board of the present invention separated.

The third figure is a perspective view of the electrical connector of the present invention taken out of the waterproof shell.

The fourth figure is a schematic perspective view of the electrical connector of the present invention with the waterproof shell and the sealing ring removed and the metal shell removed.

The fifth diagram is a schematic perspective view of the fourth diagram viewed from another direction.

The sixth figure is a fourth perspective view of the fourth figure with the metal case removed and the shielding case taken out.

The seventh figure is a schematic perspective view of the sixth figure viewed from another direction.

The eighth figure is a further exploded view of the sixth figure.

The ninth figure is a schematic perspective view of the eighth figure viewed from another direction.

The tenth figure is a schematic perspective view when the insulating body of the electrical connector of the present invention is not formed with an insulating block.

The eleventh figure is a schematic perspective view of the conductive terminals and the reinforcing members of the electrical connector of the present invention.

The twelfth figure is a three-dimensional schematic view of the conductive terminal and the reinforcing member of the eleventh figure connected to the material tape, respectively.

The thirteenth figure is a three-dimensional schematic view of the conductive terminal and the reinforcing member of the twelfth figure connected to the tape after the combination.

The fourteenth figure is a three-dimensional schematic view of the conductive terminal and the reinforcing member of the thirteenth figure connected to the tape after the insulating body is molded.

Hereinafter, specific embodiments of the electrical connector 100 of the present invention will be described with reference to the first to fourteenth drawings. The port where the electrical connector 100 and the mating connector are plugged is defined as a plug end. Define the docking direction, the vertical cross direction that is perpendicular to the docking direction, and the vertical direction that is perpendicular to both the docking direction and the cross direction.

Please refer to the first to third figures. The electrical connector 100 of the present invention is fixedly connected to the circuit board 200 and includes an insulating body 1, a conductive terminal fixed in the insulating body 1, and an electrical connector 100 installed in the insulating body 1. The reinforcing member 3, a shielding case 4 covered on the outside of the insulating body 1, a metal case 5 covered on the shielding case 4, and a waterproof case 6 covered on the outside.

Please refer to FIG. 6 to FIG. 10, the insulating body 1 includes a base 11 and a tongue plate 12 extending forward from the base 11. A rear end 13 extends from a top end of the base 11 to a rear level. Referring to FIG. 0, the upper and lower surfaces of the rear end portion 13 are provided with a plurality of pressing grooves 131. The base 11 is provided with a plurality of up-and-down through holes 111 near the rear end portion 13. The through-holes 111 are used to locate the conductive terminal 2 and at the same time accommodate the glue to flow. A groove 112 is formed on the top of the base 11. The rear end of the base 11 is provided with a pair of placing grooves 113. The upper and lower surfaces of the tongue plate 12 are provided with a plurality of terminal slots 121 and a hollow portion 122 provided around the terminal slots 121. The terminal grooves 121 located on the upper and lower surfaces of the tongue plate 12 are partially misaligned, which is convenient for pressing and positioning the conductive terminal 2. There are empty notches 123 on both sides of the tongue plate 12, so that the outermost conductive terminal 2 is exposed from the empty notches 123, which facilitates the positioning of the mold core and prevents skewing during filling. The insulating body 1 further includes an insulating block 14 integrally formed on the tongue plate 12. Referring to the tenth figure, the tongue plate 12 is provided with a horizontally extending platform 124 adjacent to the base 11 so that the mold core can be pressed when the insulating block 14 is formed to prevent filling. A receiving groove 125 is formed on the upper and lower surfaces of the tongue plate 12 and penetrates the terminal groove 121. The accommodating grooves 125 are provided on both sides of the terminal groove 121 for convenient placement.

Referring to the seventh to ninth figures, the conductive terminal 2 is made of a metal sheet, is connected by a material strip 300 during molding, and is integrally formed with the insulating body 1. The conductive terminal 2 is integrally formed with the insulating body 1 and includes a first terminal 21 and a second terminal 22. The first terminal 21 includes a first contact portion 211 exposing an upper surface of the tongue plate 12, a first holding portion 212 received in the base 11, and a first soldering portion 213 extending outside the insulating body 1. The second terminal 22 includes a second contact portion 221 exposing the lower surface of the tongue plate 12, a second holding portion 222 received in the base 11, and a second welding portion 223 extending outside the insulating body 1. The first welding portion 213 and the second welding portion 223 are arranged in a row on the same plane. The first terminals 21 and the second terminals 22 are respectively eight and are symmetrically distributed along a central axis extending back and forth. The first contact portion 211 of the first terminal 21 and the second contact portion 221 of the second terminal 22 are arranged correspondingly up and down, and the first soldering portion 213 of the first terminal 21 and the second soldering portion 223 of the second terminal 22 They are located in the same plane. Therefore, no matter whether the docking connector is inserted in the forward or reverse direction, the first contact portion 211 and the second contact portion 221 of the electrical connector 100 and the corresponding contact portion of the docking connector can be correctly and alignedly electrically connected.

Referring to the sixth figure, the first contact portion 211 of the first terminal 21 and the second contact portion 221 of the second terminal 22 are provided with pressing portions 20 protruding to both sides. The pressing portions 20 are accommodated in the receiving grooves 125, and the pressing portions 20 on each of the conductive terminals 2 are staggered, so that the mold core can be pressed on the pressing portions 20.

Referring to the twelfth figure, when molding, the material tape 300 includes a first material tape 301 connected to the front end of the first terminal 21, a second material tape 302 connected to the front end of the second terminal 22, The third strip 303 connected to the first welding portion 213 of the first terminal 21 and the fourth strip 304 connected to the second welding portion 223 of the second terminal 22. Referring to FIGS. 12 to 14, the first strip 301 is connected to a first contact portion 211 of a signal terminal of the first terminal 21, and a ground terminal and a power source of the first terminal 21 The first holding portion 212 of the terminal is connected through a material bridge 306. The second strip 302 is connected to the second contact portion 221 of the signal terminal of the second terminal 22, and the ground terminal of the second terminal 22 and the second holding portion 222 of the power terminal are exposed to the insulation. The material bridge 306 in the hollow portion 122 of the body 1 is connected. Referring to the fourteenth figure, the material bridge 306 is disposed laterally to facilitate removal in the hollow portion 122 of the insulating body 1 after molding. Referring to the thirteenth and fourteenth figures, the third material band 303 and the fourth material band 304 are overlapped and formed once, and the first welding portion 213 and the second welding portion 223 are arranged at intervals, so that When the web 300 is connected, the connected parts of the third web 303 and the fourth web 304 are spaced apart.

The reinforcing member 3 is provided in two pieces with a hollow in the middle. Each reinforcing member 3 includes a main body portion 31 held in the base 11, a bent portion 32 bent and extended from a tail end of the main body portion 31, and a welding leg formed by being bent down and extended from the bent portion 32. 33. The front end of the main body portion 31 of the reinforcing member 3 exposes the tongue plate 12 of the insulating body 1 and is covered in the insulating block 14.

Referring to FIG. 12, the material strip 300 further includes a fifth material strip 305 connected to the reinforcing member 3. The fifth tape 305 connects the front end of the main body portion 31 of the reinforcement 3 and the side of the bent portion 32 near the main body portion 31. A blocking portion 307 is formed in the middle of the fifth strip 305 and extends to the insulating body 1. The edge of the blocking portion 307 abuts the front edge of the insulating body 1 to prevent the gap between the first terminal 21 and the second terminal 22 from being filled with glue. The first material strip 301 and the second material strip 302 sandwich the fifth material strip 305 to form a three-layer superimposition and be molded at one time, simplifying the forming and cutting steps.

Referring to the first to ninth figures, the shielding case 4 includes a top wall 41 and a bottom wall 42 having an inner edge 40 and a pair of side walls 43 connecting the top wall 41 and the bottom wall 42. . Referring to the seventh figure, a rear end of the top wall 41 is provided with a first abutment portion 411 protruding inward, and a rear end edge of the bottom wall 42 is provided with a first abutment arm formed by bending downward. 421. The first abutting portion 411 is received in the groove 112 of the insulating body 1, and the first abutting arm 421 is received in a placing groove 113 of the insulating body 1 to strengthen the shielding case. 4 Fixing with the insulating body 1. The bottom wall 42 is further provided with a pair of second abutting portions 422 protruding inward. The second abutting portions 422 abut on the front end surface of the base 11 of the insulating body 1. Referring to FIGS. 6 to 9, the three points of the first resisting portion 411 and the pair of second resisting portions 422 are provided to prevent damage to the electrical connector 100 when the docking connector is excessively inserted. The shielding case 4 further includes a tail portion 44 extending from the top wall 41 and extending horizontally, and a connecting arm 45 connecting the tail portion 44 and the top wall 41. The tail portion 44 is higher than the top wall 41 in the vertical direction. Second sides of the tail portion 44 are provided with second abutment arms 441 formed by being bent downward, and the second abutment arms 441 abut against the rear end surface of the rear end portion 13 of the insulating body 1. Referring to the fourth and fifth figures, the tail portion 44 is attached to the upper surface of the rear end portion 13 of the insulating body 1. An opening 450 is defined in the connecting arm 45. Referring to the fourth figure, the connecting arm 45 corresponds to the through hole 111, so that part of the through hole 111 exposes the opening 450. The front end of the tongue plate 12 exposes the frame opening of the shielding case 4. The base 11 of the insulating body 1 covers the rear port of the shielding case 4 to enhance the sealability of the electrical connector 100. The top wall 41 and the bottom wall 42 of the shielding shell 4 are provided with a plurality of convex bulges 423 protruding inward, and the convex bulges 423 are in interference contact with the docking connector for grounding.

Referring to the first to fifth figures, the metal casing 5 is substantially flat and is covered on the shielding case 4. Referring to the fourth and fifth figures, the metal casing 5 has a plurality of glue overflow holes 50 and an exhaust hole 51 provided behind the glue overflow holes 50. The exhaust hole 51 corresponds to the opening 450 of the shielding case 4. The front end of the metal casing 5 is provided with a plurality of first bending legs 52. The first bending legs 52 abut against the upper end surface of the top wall 41 of the shielding case 4. A pair of first fixed legs 53 and a pair of second fixed legs 54 are formed on both sides of the metal casing 5 and extend downward and are bent and extended, and are located on the first fixed legs 53 and the first fixed legs 53. The second bending leg 55 between the two fixing legs 54. Referring to the third to fifth figures, the second bending legs 55 are clamped on both sides of the base 11 of the insulating body 1. The first fixed leg 53 is lower than the second fixed leg 54 in the vertical direction. Referring to the third figure, the rear end of the metal casing 5 is welded to the tail portion 44 of the shielding case 4. The second fixing leg 54 is suspended and disposed outside the tail portion 44 of the shielding case 4.

The waterproof casing 6 is integrally formed with the metal casing 5 and forms a receiving cavity 60. The accommodating cavity 60 accommodates the tongue plate 12 to expose the part that exposes the shielding case 4. Referring to the first and second figures, the rear end face of the waterproof casing 6 is located at the front end of the rear end portion 13 of the insulating body 1 and the rear end portion 44 of the shielding case 4. The waterproof housing 6 is provided with protruding columns 61 on both sides to enhance the strength of the electrical connector 100. The waterproof casing 6 fills the overflow hole 50 to enhance the holding force between the waterproof casing 6 and the metal casing 5. The first fixed leg 53 of the metal shell 5 is partially covered in the waterproof shell 6, and the waterproof shell 6 and the circuit board 200 are supported. There is a risk that the size of the first fixing leg 53 is unstable.

Referring to FIG. 11, the waterproof case 6 has a stepped portion 62 inside, so that the upper and lower inner walls of the waterproof case 6 are divided into a pair of front inner walls 63 at the front end of the stepped portion 62 and A pair of rear inner walls 64 at the rear end of the stepped portion 62 are described. The distance between the pair of front inner walls 63 is smaller than the distance between the pair of rear inner walls 64. The top wall 41 and the bottom wall 42 of the shielding case 4 are attached to the rear inner wall 64, so that the front end of the shielding case 4 abuts against the step portion 62 of the waterproof casing 6, and the shielding case The inner edge 40 of the body 4 is flush with the front inner wall 63 of the waterproof casing 6. The ports of the waterproof shell 6 are arranged obliquely up and down, and the lower ports protrude from the upper ports.

Referring to the second figure, the electrical connector 100 further includes a sealing portion 7 that is closed at the rear end of the insulating body 1. The sealing portion 7 is filled with glue through the opening 450 of the shielding case 4 and the through hole 111 of the insulating body 1 to fill the space between the base 11 and the rear end portion 13 of the insulating body 1 and the waterproof casing 6. The gap is fully waterproof. During the filling of the glue, the exhaust hole 51 on the metal casing 5 can be used to remove the air in the glue circulation channel.

The manufacturing method of the present invention is as follows: a conductive plate 2 and a reinforcing member 3 are made of a metal plate, the insulating body 1 is integrally formed outside the conductive terminal 2 and the reinforcing member 3, and the insulating block 14 is formed by secondary molding to block A gap on the insulating body 1; a metal plate is made into a shielding shell 4 and a metal shell 5, the shielding shell 4 is sleeved outside the insulating body 1, and the metal shell 5 is integrally formed with the waterproof shell 6; The waterproof shell 6 and the metal shell 5 are sheathed outside the shielding shell 4, and the metal shell 5 and the shielding shell 4 are fixed by laser welding; formed by pouring glue through the opening 450 of the shielding shell 4 Sealing section 7.

The manufacturing method of the electrical connector 100 according to the present invention is as follows: providing two sheets of conductive terminals 2 and reinforcing members 3 by punching metal plates, and the front ends of the first contact portions 211 and the second contact portions 221 of the signal terminals of the two rows of conductive terminals 2 are A first material tape 301 and a second material tape 302 are connected, the ground terminal and the power terminal of the conductive terminal 2 are connected through a material bridge 306, the material bridge 306 is exposed in the hollow portion 122, and the two rows of conductive terminals The second welding portion 213 and the second welding portion 223 at the rear end of 2 are respectively connected with a third material tape 303 and a fourth material tape 304, and the third material tape 303 and the fourth material tape 304 form a double-layer structure superposed on top A fifth material belt 305 is connected to the reinforcing member 3, and the first material belt 301 and the second material belt 302 sandwich the fifth material belt 305 to form a three-layer structure superimposed on top of each other. 305 is formed with a blocking portion 307 facing the conductive terminal 2; an insulating body 1 is injection-molded outside the two rows of conductive terminals 2 and the reinforcing member 3, and the blocking portion 307 resists the front end of the insulating body 1 and the reinforcement The front end of the piece 3 is exposed on both sides of the front end of the tongue plate 12, and the material bridge 306 is cut; The body 1 is overmolded with an insulating block 14, and the first strip 301, the second strip 302, and the fifth strip 305 are cut at a time to form a first contact portion 211 of a signal terminal provided on the conductive terminal 2. A first cutting surface 308 at the free end of the front end of the second contact portion 221, the first cutting surface 308 being flush in the up-down direction and located in the same plane; cutting the third strip 303 and the fourth strip again 304. Form a second cutting surface 309 provided at the free ends of the rear ends of the first soldering portion 213 and the second soldering portion 223 of the conductive terminal 2. The second cutting surface 309 is flush in the vertical direction and is located in the same plane. ; Provide a shielding shell 4, which is sleeved outside the insulating body 1; Provide a metal shell 5, and integrally form a waterproof shell 6 outside the metal shell 5, so that the waterproof shell 6 and the metal shell 5 is sheathed outside the shielding shell 4; the metal shell 5 is spot-welded to the shielding shell 4. The first cutting plane 308 and the second cutting plane 309 may be collectively referred to as a cutting plane.

In summary, the present invention complies with the elements of an invention patent, and a patent application is filed in accordance with the law. However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments. Anyone who is familiar with the technology of the present case with equivalent modifications or changes made in accordance with the spirit of the present invention should apply it. Covered in the following patent applications.

100‧‧‧electrical connector

1‧‧‧Insulated body

11‧‧‧ base

111‧‧‧perforation

112‧‧‧Groove

113‧‧‧ Placement slot

12‧‧‧ tongue plate

121‧‧‧Terminal Slot

122‧‧‧ Hollow

123‧‧‧ empty gap

124‧‧‧ Platform

125‧‧‧ receiving trough

13‧‧‧ rear

131‧‧‧pressing tank

14‧‧‧ Insulation Block

2‧‧‧ conductive terminals

20‧‧‧Pressing Department

21‧‧‧First terminal

211‧‧‧First contact

212‧‧‧First holding department

213‧‧‧The first welding department

22‧‧‧Second Terminal

221‧‧‧Second contact section

222‧‧‧Second Holding Department

223‧‧‧Second welding section

3‧‧‧ reinforcement

31‧‧‧Main body

32‧‧‧ Bend

33‧‧‧Soldering foot

4‧‧‧ shielding shell

41‧‧‧Top wall

411‧‧‧First resistance department

42‧‧‧ bottom wall

421‧‧‧First abutment arm

422‧‧‧Second resisting department

43‧‧‧ sidewall

44‧‧‧ tail

441‧‧‧Second abutting arm

45‧‧‧Connecting arm

450‧‧‧ opening

5‧‧‧ metal case

50‧‧‧ overflow hole

51‧‧‧Vent hole

52‧‧‧First bending foot

53‧‧‧first fixed foot

54‧‧‧Second fixing foot

55‧‧‧ Second bending foot

6‧‧‧Waterproof case

60‧‧‧Container

61‧‧‧ convex post

7‧‧‧Sealing Department

200‧‧‧Circuit Board

300‧‧‧ Strip

301‧‧‧First tape

302‧‧‧Second strip

303‧‧‧The third material belt

304‧‧‧The fourth material belt

305‧‧‧The fifth tape

306‧‧‧Bridge

307‧‧‧blocking department

308‧‧‧First cropped side

309‧‧‧ second crop

no

21‧‧‧First terminal

22‧‧‧Second Terminal

3‧‧‧ reinforcement

300‧‧‧ Strip

301‧‧‧First tape

302‧‧‧Second strip

303‧‧‧The third material belt

305‧‧‧The fifth tape

307‧‧‧blocking department

Claims (10)

An electrical connector includes an insulating body, two rows of conductive terminals and reinforcing members provided on the insulating body, and a shielding case provided on the outside of the insulating body, wherein the conductive terminals and the reinforcing members have a cutout provided at a free end. A cutting plane, the cutting plane is flush in the up-down direction and is in the same plane. The electrical connector according to item 1 of the scope of patent application, wherein the cutting surface is provided on the two rows of conductive terminals and the free end of the front end of the reinforcing member. The electrical connector according to item 1 of the scope of patent application, wherein the cutting surface is provided at the free ends of the rear ends of the two rows of conductive terminals. The electrical connector according to item 1 of the scope of patent application, wherein the insulating body has a plurality of hollow portions, the conductive terminals have adjacent ground terminals and power terminals, and the ground terminals and power terminals pass through a material bridge. Connection, the material bridge is exposed at the hollow portion. The electrical connector according to item 1 of the scope of patent application, wherein the conductive terminal further includes a signal terminal, and a cutting surface of the conductive terminal is provided at a free end of a front end of the signal terminal. The electrical connector according to item 1 of the scope of patent application, wherein the two rows of conductive terminals have a first soldering portion and a second soldering portion, respectively, and the first soldering portion and the second soldering portion are arranged at intervals. One line. The electrical connector according to item 1 of the scope of patent application, wherein the insulating body has a tongue plate and a base, and two sides of the tongue plate are provided with gaps, so that the outermost conductive terminals are exposed from the gaps. A horizontally extending platform is provided near the base plate of the tongue plate, and the hollow notch and the platform are used for inserting a mold kernel. A method for manufacturing an electrical connector includes:
S1. Two rows of conductive terminals and reinforcing members are provided. The front ends of the two rows of conductive terminals are respectively connected with a first material tape and a second material tape, and the reinforcing member is connected with a fifth material tape, the first material tape and the first material tape. Two material tapes sandwich the fifth material tape to form a three-layer structure superimposed on top of each other;
S2. An insulating body is injection-molded outside the two rows of conductive terminals and reinforcing members;
S3. Cut the first material tape, the second material tape, and the fifth material tape at one time;
S4. Provide a shielding case, and the shielding case is sleeved outside the insulating body. The method for manufacturing an electrical connector according to item 8 of the scope of patent application, wherein in step S1, a third tape and a fourth tape are respectively connected to the rear ends of the two rows of conductive terminals, and the third tape Form a double-layered structure superimposed on the fourth tape and perform one-time molding. In step S3, the third and fourth tapes are cut at one time. The method for manufacturing an electrical connector according to item 8 of the scope of patent application, wherein in step S2, the insulating body is exposed on both sides of the front end of the reinforcing member, and an insulating block is overmolded on the insulating body to cover the Both sides of the front end of the reinforcement.