CN115149293A

CN115149293A - Electric connector and manufacturing method thereof

Info

Publication number: CN115149293A
Application number: CN202110347340.1A
Authority: CN
Inventors: 茆玉龙; 胡兵波; 谢永涛; 章君
Original assignee: Smart Chip Microelectronic Co ltd
Current assignee: Smart Chip Microelectronic Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2022-10-04

Abstract

The invention provides an electric connector and a manufacturing method thereof, wherein the electric connector comprises an insulating body and a terminal assembly fixed in the insulating body, the terminal assembly comprises an upper row of terminals and a lower row of terminals, a pair of power terminals and a pair of grounding terminals are respectively arranged in the upper row of terminals and the lower row of terminals, the power terminals in the upper row of terminals and the power terminals in the lower row of terminals are mutually independent, and the power terminals in the upper row of terminals and the power terminals in the lower row of terminals are connected through a conducting strip. Compared with the prior art, the electric connector has the advantages that the terminal assembly is optimized, the power supply terminals in the upper row of terminals and the lower row of terminals are lapped by the conducting strips to form a parallel loop, the current carrying capacity of the power supply terminals can be improved, and meanwhile, the signal transmission efficiency is improved.

Description

Electric connector and manufacturing method thereof

Technical Field

The present invention relates to the field of electrical connection, and more particularly, to an electrical connector and a method for manufacturing the same.

Background

With the development trend of miniaturization and lightness of consumer electronic products such as notebooks, tablet computers, mobile phones and the like, the requirements on the design and manufacturing process of parts of the consumer electronic products are higher and higher, and with the increasingly strong performance of the consumer electronic products such as mobile phones and the like, the electric connector needs to have the transmission capability of high-frequency signals in more and more occasions, so that the market puts forward higher design requirements on the aspects of signal transmission quality, connection stability and the like of the electric connector, how to improve the transmission efficiency, and meanwhile, ensuring the quality of signals is a very important research topic in the design of the current electric connector.

In view of the above, there is a need for an improved electrical connector and method for manufacturing the same to solve the above problems.

Disclosure of Invention

The present invention provides an electrical connector and a method for manufacturing the same, so as to improve the transmission efficiency of signals.

In order to solve the technical problems, the invention adopts the following technical scheme: an electric connector comprises an insulating body and a terminal assembly fixed in the insulating body, wherein the terminal assembly comprises an upper row of terminals and a lower row of terminals, a pair of power terminals and a pair of grounding terminals are respectively arranged in the upper row of terminals and the lower row of terminals, the power terminals in the upper row of terminals and the power terminals in the lower row of terminals are mutually independent and are connected through a conducting strip.

Furthermore, the power supply terminals of the upper row of terminals and the lower row of terminals are provided with two contact arms which are corresponding to each other up and down, the front ends of the contact arms are provided with bending parts, the conducting strips are clamped between the bending parts, and the bending parts and the conducting strips are embedded in the insulating body.

Further, in the front-rear direction, the front end of the bending part extends forwards to be not more than the front end of the conducting plate, in the thickness direction of the conducting plate, the thickness of the front end of the bending part is smaller than the thickness of other parts of the bending part, and the thickness of the front end of the conducting plate is smaller than the thickness of other parts of the conducting plate.

Furthermore, the width of the conducting strips is larger than the width of the bending parts at the upper and lower sides of the conducting strips, and the length of the conducting strips in the front-back direction is larger than the length of the bending parts.

Further, the power terminal is located inside the ground terminal, the electrical connector further comprises a pair of shielding sheets located between the upper row terminal and the lower row terminal, the ground terminal in the upper row terminal and the ground terminal in the lower row terminal are also independent from each other and are connected with each other through the shielding sheets; the front end of the conducting plate and the front end of the shielding plate are arranged in a left-right alignment mode.

Furthermore, the conducting strip is located the inboard of a pair of shielding piece to the length of conducting strip is less than the length of shielding piece, the conducting strip is equipped with one at the one side towards the shielding piece and steps down the breach.

Furthermore, the upper row of terminals and the lower row of terminals are respectively provided with a plurality of first signal terminals located between two power terminals and a plurality of second signal terminals located between the power terminals and the ground terminal, the second signal terminals are differential signal terminals, the front end of the first signal terminal is provided with a bending portion, the front end of the second signal terminal is provided with a thinning portion, and the width and the thickness of the thinning portion are smaller than the bending portion of the first signal terminal.

Furthermore, the insulation body comprises an insulation positioning body and an outer body, wherein the insulation positioning body is integrally formed around the lower row of terminals and the conducting strip in an injection molding mode, and the outer body is formed around the insulation positioning body and the upper row of terminals in an injection molding mode.

Furthermore, a plurality of terminal grooves which are opened upwards are formed on the insulating positioning body, the upper row of terminals are positioned in the terminal grooves, and the bending parts and the conducting strips are welded and fixed together.

In order to solve the technical problem, the invention also adopts the following technical scheme: a method of manufacturing an electrical connector comprising the steps of: s10: preparing an upper row terminal and a lower row terminal, wherein the upper row terminal and the lower row terminal are arranged in a reverse symmetry manner and are respectively provided with a pair of power terminals and a pair of grounding terminals; s20: preparing a pair of shielding sheets and a pair of conducting sheets; s30: embedding the lower row of terminals, the conducting plate and the shielding plate into an insulating positioning body together through first injection molding; s40: assembling the upper row of terminals to the insulating positioning body, and lapping the conducting strips between the corresponding power terminals of the upper row of terminals and the lower row of terminals; s50: the upper row of terminals, the lower row of terminals, the shielding sheet and the conducting sheet are embedded in an insulating body through the second injection molding.

Compared with the prior art, the electric connector has the advantages that the terminal assembly is optimized, the power supply terminals in the upper row of terminals and the lower row of terminals are lapped by the conducting strips to form a parallel loop, the current carrying capacity of the power supply terminals can be improved, and meanwhile, the signal transmission efficiency is improved.

Drawings

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

Fig. 2 is a schematic view of the terminal assembly of the electrical connector of the present invention when it is combined with the insulative housing.

Fig. 3 is an enlarged partial view of the wire frame area of the electrical connector of fig. 2.

Fig. 4 is a schematic view of a terminal assembly of the electrical connector of the present invention.

Fig. 5 is a schematic view of the upper row of terminals of the terminal assembly of the electrical connector of the present invention.

Fig. 6 is a schematic view of the lower terminal of the terminal assembly of the electrical connector of the present invention.

Fig. 7 is a schematic view of the terminal assembly of the electrical connector of the present invention without cutting the material tape.

Fig. 8 is a schematic view of the terminal assembly of the electrical connector of the present invention with the shield plate of the terminal assembly having no strip cut away.

Fig. 9 is a schematic view of the terminal assembly of the electrical connector of the present invention with the upper row of terminals having no strip material cut away.

Fig. 10 is a schematic view of the terminal assembly of the electrical connector of the present invention with the lower row of terminals having no strip material cut away.

Fig. 11 is a schematic view of the distribution of the shield blades and the lower row of terminals of the terminal assembly of the electrical connector of the present invention.

Fig. 12 is another schematic view of the distribution of the shield blades and the lower row of terminals of the terminal assembly of the electrical connector of the present invention.

Fig. 13 is a schematic view of the terminal assembly of the electrical connector of the present invention after being combined with the insulative housing.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. The present invention is not limited to the embodiment, and structural, methodological, or functional changes made by one of ordinary skill in the art according to the embodiment are included in the scope of the present invention.

Referring to fig. 1 to 13, the present invention provides an electrical connector, which includes an insulating body 10, a terminal assembly 20 housed in the insulating body 10, and a metal shell 30 covering the surface of the insulating body 10, wherein a plug cavity 31 is disposed in the metal shell 30 for housing a mating terminal electrical connector (not shown), and two sides of the metal shell 30 are provided with solder pins inserted into a circuit board 300, the insulating body 10 is located in the plug cavity 31, and a portion of the terminal assembly 20 is exposed on the surface of the insulating body 10 for electrically connecting with the mating terminal electrical connector, and the structure of the electrical connector is described in detail below.

The insulation body 10 has a base 11 and a tongue 12 protruding forward from the base 11, the base 11 is fixedly connected to the metal shell 30, and the terminal assembly 20 is held in the base 11. The mating tongue 12 is flat and has an upper surface and a lower surface, and portions of the terminal assembly 20 are exposed on both the upper surface and the lower surface. The insulating body 10 is obtained by two-time injection molding (described in detail later), which is represented by an insulating positioning body 13 during the first injection molding, and an outer body is formed on the periphery of the insulating positioning body 13 after the second injection molding, and the insulating positioning body 13 and the outer body jointly form the insulating body 10.

The metal shell 30 is provided with a top wall 31, a bottom wall 32 and a pair of arc-shaped side walls 33, wherein the top wall 31 is provided with a splicing seam 34, the rear end of the top wall 31 is provided with a pair of downward bent limiting pieces 35 for abutting against the insulation body 10 from back to front, the bottom wall 32 is attached to the circuit board 300, the arc-shaped side walls 33 are integrally connected with the top wall 31 and the bottom wall 32, preferably, the arc-shaped side walls 33 are C-shaped, and the electrical connector is a Type-C Type USB connector. The top wall 31, the bottom wall 32 and the side wall 33 together enclose the plugging cavity 31, and a pair of frame connecting openings 311 is arranged at the front end of the plugging cavity 31.

The terminal assembly 20 includes an upper row of terminals 21, a lower row of terminals 22, and a middle conductive assembly 23 between the upper row of terminals 21 and the lower row of terminals 22, as shown in fig. 4, the upper row of terminals 21 and the lower row of terminals 22 are the same in number, and both include a pair of ground terminals 21G/22G, a pair of power terminals 21P/22P, and a plurality of signal terminals, each of the ground terminals 21G/22G, the power terminals 21P/22P, and the signal terminals is provided with a contact arm 24 extending forward and a solder pin 25 bending downward from the rear end of the contact arm 24, wherein the contact arms 24 of the upper row of terminals 21 and the contact arms 24 of the lower row of terminals 22 are respectively distributed on the upper and lower sides of the butt joint 12 to form an upper row of contact arms 24 and a lower row of contact arms 24, and the upper row of contact arms 24 and the lower row of contact arms 24 are the same in number and are in one-to one correspondence; the soldering pins 25 of the upper row of terminals 21 are L-shaped and arranged in a row along a straight line and soldered to the surface of the circuit board 300 by SMT, and the soldering pins 25 of the lower row of terminals 22 are divided into two parallel rows L1 and L2, which extend vertically downward and are inserted into the circuit board 300 for soldering connection. For ease of understanding, the structure of the upper row terminals 21, the lower row terminals 22, and the intermediate conductive member 23 will be described in detail below, in which:

as shown in fig. 5 and 9, in the upper row of terminals 21, the pair of ground terminals 21G, the pair of power terminals 21P and the plurality of signal terminals are arranged at equal intervals, the pair of ground terminals 21G is located at the outermost side, the power terminals 21P are located at the inner side of the ground terminals 21G, and the plurality of signal terminals include a plurality of first signal terminals 21S-1 located between the two power terminals 21P and a plurality of second signal terminals 21S-2 located between the power terminals 21P and the ground terminals 21G. The front ends of the contact arms 24 of the pair of ground terminals 21G and the pair of power terminals 21P are aligned with each other (i.e., aligned left and right in the horizontal direction), and both extend forward beyond the front ends of the contact arms 24 of the first signal terminal 21S-1 and the second signal terminal 21S-2, so that the front ends of the contact arms 24 of the first signal terminal 21S-1 and the second signal terminal 21S-2 are disposed further rearward, and the front ends of the contact arms 24 of the ground terminal 21G, the power terminal 21P, the first signal terminal 21S-1 and the second signal terminal 21S-2 are all bending portions 241 for being embedded in the mating tongue plate 12 of the insulating body 10, and the bottom surfaces of the bending portions 241 of the first signal terminal 21S-1 and the bottom surfaces of the bending portions 241 of the power terminal 21P and the ground terminal 21G are located on the same plane; the thickness of the front end of the bending part 241 is smaller than the thickness of other parts of the bending part 241; the rear side of the bent portion 241 of the first signal terminal 21S-1 is aligned with the rear side of the bent portion 241 of the second signal terminal 21S-2 in a left-right direction, the bent portion 241 of the second signal terminal 21S-2 is shorter than the bent portion 241 of the first signal terminal 21S-1 in the front-rear direction, the top surface of the front end of the bent portion 241 of the second signal terminal 21S-2 is higher than the top surface of the front end of the bent portion 241 of the first signal terminal 21S-1, and the bottom surface of the front end of the bent portion 241 of the second signal terminal 21S-2 is also higher than the bottom surface of the front end of the bent portion 241 of the first signal terminal 21S-1. It is worth mentioning that the second signal terminal 21S-2 is located between two adjacently disposed power source terminals 21P and a ground terminal 21G, the second signal terminal 21S-2 is preferably a high frequency signal terminal, such as a differential signal terminal, and the front end of the contact arm 24 of the second signal terminal 21S-2 is located further back than the first signal terminal 21S-1. Preferably, the front end of the contact arm 24 of the second signal terminal 21S-2 is thinned to form a thinned portion 242, and specifically, the thickness of the front end of the contact arm 24 of the second signal terminal 21S-2 is smaller than the thickness of the contact arm 24 at other positions, and the width of the front end of the contact arm 24 of the second signal terminal 21S-2 is smaller than the width of the contact arm 24 at other positions, that is, the front end of the contact arm 24 of the second signal terminal 21S-2 presents a narrowed and thinned structure, which is beneficial for embedding the front end of the second signal terminal 21S-2 in the insulating body 10 to avoid exposing the front end of the second signal terminal 21S-2 on the surface of the mating tongue 12, and the narrowed and thinned structure can make the interference of the front end of the second signal terminal 21S-2 when transmitting high-frequency signals smaller, which is beneficial for improving the transmission quality of high-frequency signals, and preferably, the top surface of the thinned portion 242 of the second signal terminal 21S-2 is higher than the top surface of the front end of the first signal terminal 21S-1 in the same arrangement, and the distance between the front ends of the first signal terminal 21S-2 in the same arrangement is further reduced. As shown in fig. 9, in the thinning operation, the connecting position between the front end of the second signal terminal 21S-2 and the upper material tape 210 is thinned by pressing, the thickness of the position where the two are integrally connected becomes thinner after the thinning, the front end of the contact arm 24 is thinned, and then the contact arm is finally embedded in the insulating body 10 by an injection molding process, and since the front end of the contact arm 24 is thinned, the flow of molten plastic during the injection molding is smoother, and the front end of the contact arm 24 can be more easily covered and embedded in the insulating body 10.

As shown in fig. 6 and 10, in the lower row terminal 22, the structure and distribution of the grounding terminal 22G, the power terminal 22P, the contact arms 24 of the first signal terminal 22S-1 and the second signal terminal 22S-2 are substantially the same as those of the upper row terminal 21, but the structure and distribution of the soldering pins 25 of the lower row terminal 22 are different from those of the soldering pins 25 of the upper row terminal 21, specifically, the soldering pins 25 of the lower row terminal 22 are arranged into two parallel rows of soldering pins L1 and L2, the number of the two rows of soldering pins 25 is the same, and the arrangement direction is parallel to each other, wherein the soldering pins 25 of the grounding terminal 22G and the power terminal 22P are located in the rear row soldering pin L2, and the soldering pins 25 of the second signal terminal 22S-2 (i.e., high-frequency signal terminals) are located in the front row soldering pin L1.

As shown in fig. 8, 11 and 12, the middle conductive assembly 23 includes a pair of shielding plates 23G and a pair of conductive plates 23P, and the shielding plates 23G and the conductive plates 23P are embedded in the tongue pair 12. Wherein: the shielding plate 23G is an elongated metal plate extending back and forth, and is provided with a main body 231 and a soldering foot 25 bent and extending downward from the rear end of the main body 231, the main body 231 is located right below the contact arms 24 of the ground terminal 21G and the second signal terminal 21S-2 in the upper row of terminals 21, and is located right above the contact arms 24 of the ground terminal 22G and the second signal terminal 22S-2 in the lower row of terminals 22, and the width of the main body 231 is significantly wider than the width of the contact arms 24 of the

ground terminal

21G, 22G and the second signal terminal 21S-2, 22S-2, so that shielding coverage can be achieved on the contact arms 24 of the

ground terminal

21G, 22G and the second signal terminal 21S-2, 22S-2 in the vertical direction (i.e. the projection of the front end of the second signal terminal 22S-2 in the thickness direction of the shielding plate 23G is located on the shielding plate 23G), thereby enabling the

ground terminal

21G, 22G and the second signal terminal 21S-2, 22S-2 in the upper and the lower row of terminals to be shielded from the high-frequency signal terminal when the shielding plate 23G and the high frequency signal terminal 22S-2 are transmitted in the shielding plate 21S-2 (i.e. the shielding plate 23G and the high frequency signal terminal is reduced in the high frequency transmission area of the high frequency signal terminal 22S-2); the main body 231 of the shielding plate 23G is further provided with a contact 233 protruding forward, the contact 233 is electrically contacted with the ground terminal 21G of the upper row of terminals 21 and the ground terminal 22G of the lower row of terminals 22, preferably, the contact 233 is overlapped with the bent portions 241 of the

ground terminals

21G and 22G at the upper and lower sides thereof, and is embedded in the butt tongue plate 12; preferably, the shield piece 23G is provided with through holes 234 at positions corresponding to the

ground terminals

21G, 22G and the second signal terminals 21S-2, 22S-2. As shown in fig. 11, the soldering leg 25 of the shielding plate 23G is positioned in the same row as the soldering legs 25 of the ground terminal 21G and the power terminal 21P, and the soldering leg 25 of the shielding plate 23G is positioned between the soldering leg 25 of the adjacent ground terminal 22G and the soldering leg 25 of the power terminal 22P. The conducting strip 23P is independent of the shielding strips 23G, the two do not physically contact, and the conducting strip 23P is located inside the pair of shielding strips 23G in the horizontal direction, and the conducting strip 23P is located between the power terminal 21P of the upper row of terminals 21 and the power terminal 21P of the lower row of terminals 22 in the vertical direction, and is respectively overlapped and conducted with the power terminal 21P of the upper row of terminals 21 and the power terminal 21P of the lower row of terminals 22, as shown in fig. 3, specifically, the conducting strip 23P is sandwiched between the bending portions 241 at the front ends of the upper and lower power terminals 21P, so as to conduct the upper and lower power terminals 21P to form a parallel connection, thereby increasing the current transmission capability thereof, and being beneficial to improving the transmission efficiency, and the width of the conducting strip 23P is wider than the width of the bending portion 241, which can completely cover the bending portion 241 in the vertical direction, and is also convenient for a reliable contact surface between the bending portion 241 and the conducting strip 23P to be sufficient to realize a stable connection, and also increase the contact area with the conducting strip 23P during injection molding, and can better fix the conducting strip 23P, and in the front end of the front portion 241 does not exceed the plastic extending forward end of the bending portion 23P; preferably, the front end of the conducting strip 23P and the front end of the shielding strip 23G are arranged in a left-right alignment manner, so that the conducting strip and the shielding strip can be formed and fixed by the same material strip, and the thickness of the front end of the conducting strip 23P is smaller than that of other parts of the conducting strip 23P; the size of the conducting strip 23P is substantially similar to the bending portion 241 at the front end of the power terminal 21P, and an abdicating notch 232 is formed at one side of the conducting strip 23P facing the shielding strip 23G to prevent the conducting strip 23P from contacting the shielding strip 23G. As for the overlapping manner between the conductive sheet 23P and the bent portion 241 of the power terminal 21P, a manner of welding, crimping or bonding may be adopted, and preferably, the conductive sheet 23P and the bent portion 241 may be directly crimped together by a jig to form a pre-fixing, and then embedded in the insulating body 10 by two injection molding processes (see below); of course, the first injection molding process may be performed first, the lower row terminal 22 is combined with the insulating material first, the bent portion 241 of the power terminal 21P in the lower row terminal 22 is exposed, then the upper row terminal 21 is assembled above the lower row terminal 22, the conducting strip 23P and the bent portions 241 of the upper and lower power terminals 21P are welded together by laser welding, and then the second injection molding process is performed finally, so as to embed the two in the insulating body 10.

In addition, as shown in fig. 6 to 11, the upper row of terminals 21, the lower row of terminals 22, and the middle conductive assembly 23 are all formed by stamping a metal sheet, and in the forming process, a metal material strip is connected to each of the upper row of terminals, the connection position with the metal material strip is cut finally to separate the metal material strip from the metal material strip. The material area includes: the material belt connected with the upper row of terminals 21 is an upper material belt 210, a lower material belt 220 connected with the lower row of terminals 22 and an intermediate material belt 230 connected with the intermediate conductive assembly 23, wherein the front ends and the welding pins 25 of the upper row of terminals 21 are integrally connected with the upper material belt 210, the front ends and the welding pins 25 of the lower row of terminals 22 are integrally connected with the lower material belt 220, the welding pins 25 of the lower row of terminals 22 are divided into two rows, but the two rows of welding pins 25 are integrally connected by the lower material belt 220, that is, the lower material belt 220 is bent in a staggered manner to form a structure with two rows of welding pins 25; the middle tape 230 is integrally connected to the shielding sheet 23G and the conductive sheet 23P, that is, the shielding sheet 23G and the conductive sheet 23P are independent from each other but both are formed by stamping the same metal tape. As shown in fig. 13, the assembly of the upper material tape 210, the lower material tape 220 and the intermediate material tape 230 after injection molding of the insulating body 10 is illustrated, and after the assembly, the upper material tape 210, the lower material tape 220 and the intermediate material tape 230 are cut and separated from the front ends and the rear ends (i.e., the welding pins 25) of the upper row terminals 21 and the lower row terminals 22.

In the preferred embodiment of the present invention, in the manufacturing process of the electrical connector, an injection Molding process (Molding) is firstly adopted to mold the lower row of terminals 22 and the middle conductive assembly 23 with the insulation positioning body 13, then the upper row of terminals 21 is assembled to the insulation positioning body 13, then the injection Molding process is used to form the insulation body 10 around the insulation positioning body, so as to complete the assembly of the insulation body 10 and the terminal assembly 20, and finally the metal housing 30 is assembled to the insulation body 10. It can be seen that, in the whole manufacturing process, two times of injection Molding processes (Molding) are required, so that great implementation difficulty exists, the number of the upper row terminals 21 and the lower row terminals 22 of the electrical connector is large, 24 in total, the number of the soldering pins 25 also reaches 24, and the requirement on space occupation is large, in order to fix and position the many soldering pins 25 in the two times of injection Molding processes, the soldering pins 25 of the lower row terminals 22 of the electrical connector are divided into two rows, and are soldered with the circuit board 300 in a manner of being inserted into the circuit board 300, and the soldering pins 25 of the upper row terminals 21 are arranged in one row and are soldered with the circuit board 300 in a manner of Surface Mount Technology (SMT), so that the soldering pins 25 of the two rows of terminals are reasonably staggered, and the structural design can facilitate fixing and limiting of the upper material belt 210 of the upper row terminals 21 and the lower material belt 220 of the lower row terminals 22, thereby providing convenience for the two times of injection Molding processes.

In combination with the above description, the method for manufacturing the electrical connector includes the following steps:

s10: the upper row terminals 21 and the lower row terminals 22 are prepared such that the solder tails 25 at the rear ends of the upper row terminals 21 are arranged in one row, and the solder tails 25 at the rear ends of the lower row terminals 22 are arranged in the front and rear rows. Wherein, preparing the upper row terminal 21 and the lower row terminal 22 specifically includes: s11: punching 12 terminals from a material feeding belt 210 to obtain an upper row of terminals 21, thinning the front ends of 4 terminals, and making the welding pins 25 at the rear ends of the 12 terminals be surface welding (SMT) welding pins 25; s12: the lower row of terminals 22 is obtained by punching 12 terminals from a lower tape 220, and the front ends of 4 of the terminals are thinned, and the soldering pins 25 at the rear ends of the 12 terminals are Through-hole (Through-hole) soldering pins 25, and the 8 terminals with thinned front ends are all high-frequency signal terminals, such as differential signal terminals.

S20: a pair of shield plates 23G and a pair of conductive plates 23P are prepared. Preferably, the soldering pins 25 at the rear end of the shielding plate 23G are arranged in the rear row of soldering pins 25 of the lower row of terminals 22, and the shielding plate 23G and the conductive plate 23P are both punched from the same material tape (i.e. the aforementioned middle material tape 230).

S30: the lower row of terminals 22, the conductive plate 23P and the shielding plate 23G are embedded in an insulating positioning body 13 together by a first injection molding.

S40: the upper row terminals 21 are assembled to the insulating positioning body 13, and the conductive sheets 23P are lapped between the upper and lower row terminals 22. Preferably, the upper and lower sides of the conductive sheet 23P are respectively overlapped with the power terminals 21P in the upper row of terminals 21 and the power terminals 21P in the lower row of terminals 22. The lap joint may be a crimp, weld or adhesive.

S50: the upper row of terminals 21, the lower row of terminals 22, the shielding plate 23G and the conducting plate 23P are embedded into an insulating body 10 by a second injection molding.

S60: a metal shell 30 is assembled on the insulating body 10.

In summary, in the present invention, the terminal assembly 20 is optimized, and the power terminals 21P of the upper and lower rows of terminals 22 are connected by the conductive sheets 23P to form a parallel circuit, so as to improve the current carrying capability of the power terminals 21P and improve the signal transmission efficiency. Moreover, the solder pins 25 of the upper row of terminals 21 and the lower row of terminals 22 are distributed in three rows, which is particularly suitable for electrical connectors with a large number of terminals, and can improve the spatial layout of the solder pins 25 and the related process, thereby facilitating better fixing and positioning in the process. Meanwhile, due to the adoption of the more optimized high-frequency signal terminal (namely the second signal terminal 21S-2), the electric connector can be more suitable for the application scene of high-frequency transmission, the transmission quality of high-frequency signals is improved, and the interference is reduced.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims

1. An electric connector comprises an insulating body and a terminal assembly fixed in the insulating body, wherein the terminal assembly comprises an upper row of terminals and a lower row of terminals, and a pair of power terminals and a pair of grounding terminals are respectively arranged in the upper row of terminals and the lower row of terminals, and the electric connector is characterized in that: the power supply terminals in the upper row of terminals and the power supply terminals opposite to the power supply terminals in the lower row of terminals are mutually independent and are connected through a conducting strip.

2. The electrical connector of claim 1, wherein: the power supply terminals of the upper row of terminals and the lower row of terminals are provided with two contact arms which are mutually corresponding up and down, the front ends of the contact arms are provided with bending parts, the conducting strips are clamped between the bending parts, and the bending parts and the conducting strips are embedded in the insulating body.

3. The electrical connector of claim 2, wherein: in the front-back direction, the front end of the bending part extends forwards to be not more than the front end of the conducting plate, in the thickness direction of the conducting plate, the thickness of the front end of the bending part is smaller than the thickness of other parts of the bending part, and the thickness of the front end of the conducting plate is smaller than the thickness of other parts of the conducting plate.

4. The electrical connector of claim 3, wherein: the width of the conducting strip is larger than the width of the bending parts at the upper side and the lower side of the conducting strip, and the length of the conducting strip in the front-back direction is larger than the length of the bending parts.

5. The electrical connector of any of claims 2 to 4, wherein: the power terminal is positioned at the inner side of the grounding terminal, the electric connector also comprises a pair of shielding sheets positioned between the upper row terminal and the lower row terminal, the grounding terminal in the upper row terminal and the grounding terminal in the lower row terminal are also independent from each other and are connected with each other through the shielding sheets; the front end of the conducting plate and the front end of the shielding plate are arranged in a left-right alignment mode.

6. The electrical connector of claim 5, wherein: the conducting strips are located on the inner sides of the pair of shielding strips, the length of the conducting strips is smaller than that of the shielding strips, and a yielding notch is formed in one side, facing the shielding strips, of the conducting strips.

7. The electrical connector of claim 2, wherein: the upper row of terminals and the lower row of terminals are respectively provided with a plurality of first signal terminals located between two power supply terminals and a plurality of second signal terminals located between the power supply terminals and a grounding terminal, the second signal terminals are differential signal terminals, the front ends of the first signal terminals are provided with bending parts, the front ends of the second signal terminals are provided with thinning parts, and the width and the thickness of the thinning parts are smaller than the bending parts of the first signal terminals.

8. The electrical connector of claim 7, wherein: the insulation body comprises an insulation positioning body and an outer body, wherein the insulation positioning body is integrally formed around the lower row of terminals and the conducting strip in an injection molding mode, and the outer body is formed around the insulation positioning body and the upper row of terminals in an injection molding mode.

9. The electrical connector of claim 8, wherein: a plurality of terminal grooves which are opened upwards are formed on the insulating positioning body, the upper row of terminals are positioned in the terminal grooves, and the bending part and the conducting plate are welded and fixed together.

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

s10: preparing an upper row terminal and a lower row terminal, wherein the upper row terminal and the lower row terminal are arranged in a reverse symmetry manner and are respectively provided with a pair of power terminals and a pair of grounding terminals;

s20: preparing a pair of shielding sheets and a pair of conducting sheets;

s30: embedding the lower row of terminals, the conducting plate and the shielding plate into an insulating positioning body together through first injection molding;

s40: assembling the upper row of terminals on the insulation positioning body, and overlapping the conducting strips between the corresponding power terminals of the upper row of terminals and the lower row of terminals;

s50: the upper row of terminals, the lower row of terminals, the shielding plate and the conducting plate are embedded into an insulating body through the second injection molding.