CN216903601U - Electric connector - Google Patents

Abstract

The utility model relates to an electric connector, which is provided with an upper tongue piece, a lower tongue piece, a middle iron piece, a plastic part and a shell, wherein the upper tongue piece, the lower tongue piece and the middle iron piece are guided to be sequentially aligned, superposed and combined through a positioning system, and the positioning system also connects the upper tongue piece, the lower tongue piece and the middle iron piece into a stable matrix so that the plastic part is combined with the matrix in an injection connection mode to enable the upper tongue piece, the lower tongue piece and the middle iron piece to be fixedly connected; meanwhile, the upper grounding terminal in the upper tongue piece and the lower grounding terminal of the lower tongue piece are also in conductive connection through the first lap joint part and the second lap joint part, so that the upper short-circuit connection and the lower short-circuit connection are realized, the grounding terminal has a better shielding effect, the crosstalk generated by the signal terminal in the signal transmission process is reduced, the crosstalk is improved, and the high frequency is met; the combined structure is stable and reliable, the manufacturing and the assembling are convenient, the quality of the electric connector is guaranteed, the service performance is improved, the service life is prolonged, and the requirements of a new generation of USB TYPE-C connector are met.

Description

Electric connector

Technical Field

The utility model relates to the technical field of electric connectors, in particular to a data transmission type-c connector.

Background

With the development of science and technology, various electronic products are developed, and a plurality of corresponding connectors for different electronic products are developed, the USB connector is one of the most widely used and popular connectors in an electrical connector, and most electronic devices are equipped with the USB connector. At present, due to the characteristic of a double-sided pluggable port of the USB TYPE-C connector, unlike the old USB port, power can only be transmitted in a single direction, power transmission of the TYPE-C port is bidirectional, and the USB TYPE-C connector can be widely applied to mobile devices such as smart phones and notebooks and can be used for charging, data transmission and the like.

The size of the new generation USB TYPE-C connector is smaller, the requirements on mechanical performance and electrical performance are higher, and in order to ensure the reliability of large current transmission of products, various manufacturers provide corresponding designs. However, since the new generation of USB TYPE-C connector has small size, many terminals, limited space, increased difficulty in assembly and manufacture, and is easily to cause defective products, the applicant proposes an electrical connector, which is the present application.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides an electric connector which optimizes an assembly structure, is convenient to manufacture and assemble and ensures the quality of the electric connector.

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

an electrical connector, comprising:

an upper tongue piece composed of at least an upper insulator and an upper row of terminals positioned on the upper insulator; the upper row of terminals is provided with an upper grounding terminal, the upper grounding terminal is provided with a first contact part at the front end, a first welding part at the rear end and a first fixing part positioned between the first contact part and the first welding part, the first fixing part is fixedly connected with the upper insulator, and the first fixing part is provided with a first lap joint part which protrudes downwards;

a lower tongue piece composed of at least a lower insulator and a lower row of terminals positioned on the lower insulator; the lower row of terminals is provided with a lower grounding terminal, the lower grounding terminal is provided with a fourth contact part at the front end, a fourth welding part at the rear end and a fourth fixing part positioned between the fourth contact part and the fourth welding part, the fourth fixing part is fixedly connected with the lower insulator, and the fourth fixing part is provided with a second lap joint part;

the middle iron sheet is embedded between the upper tongue sheet and the lower tongue sheet and is also provided with a positioning system, and the positioning system not only guides the upper tongue sheet, the lower tongue sheet and the middle iron sheet to be sequentially aligned, superposed and combined, but also connects the upper tongue sheet, the lower tongue sheet and the middle iron sheet into a stable matrix; meanwhile, the first lap joint part protrudes downwards and is in conductive connection with the second lap joint part, and the middle iron sheet provides an avoiding space for the first lap joint part to protrude downwards;

the plastic part is combined with the base body in an injection molding connection mode, so that the upper tongue piece, the lower tongue piece and the middle iron piece are fixedly connected;

the shell, this shell parcel is in the periphery of plastic part, and the front end of shell is equipped with the socket, and this socket is used for the outside to the plug-in components grafting of cooperation.

The above solution is further that the positioning system comprises: the positioning post is a hot-melt plastic post and extends downwards from the upper tongue piece, a first positioning hole formed in the lower tongue piece and a second positioning hole formed in the middle iron piece; the positioning columns are sleeved and connected through the first positioning hole and the second positioning hole to guide the alignment, superposition and combination among the upper tongue piece, the lower tongue piece and the middle iron piece; and the tail end of the positioning column finally penetrates out of the first positioning hole and is subjected to hot melting riveting, so that the upper tongue piece, the lower tongue piece and the middle iron sheet are connected into a stable base body.

The above scheme is further, first overlap joint portion is the shell fragment of extending the structure on the first fixed part, and the second overlap joint portion is the platform of extending the structure on the second fixed part, and first overlap joint portion elasticity pushes down the laminating on the second overlap joint portion, forms the face and connects the conduction connection.

In the above solution, the electrical connector is a data transmission type-c connector, and the upper row of terminals further includes an upper power terminal and an upper signal terminal; the upper power supply terminal is provided with a second contact part at the front end, a second welding part at the rear end and a second fixing part positioned between the second contact part and the second welding part; the upper signal terminal is provided with a third contact part at the front end, a third welding part at the rear end and a third fixing part positioned between the third contact part and the third welding part; the lower row of terminals also comprises a lower power supply terminal and a lower signal terminal, wherein the lower power supply terminal is provided with a fifth contact part at the front end, a fifth welding part at the rear end and a fifth fixing part positioned between the fifth contact part and the fifth welding part; the lower signal terminal is provided with a sixth contact part at the front end, a sixth welding part at the rear end and a sixth fixing part positioned between the sixth contact part and the sixth welding part; the first contact part, the second contact part and the third contact part of the upper row of terminals are respectively aligned with the fourth contact part, the fifth contact part and the sixth contact part of the lower row of terminals up and down, the first welding part, the second welding part and the third welding part of the upper row of terminals are staggered with the fourth welding part, the fifth welding part and the sixth welding part of the lower row of terminals in an interval manner in the up-and-down direction, the first welding part, the second welding part and the third welding part of the upper row of terminals are arranged in a row in the horizontal direction and are offset to the first direction together, the fourth welding part, the fifth welding part and the sixth welding part of the lower row of terminals are arranged in a row in the horizontal direction and are offset to the second direction together, and the first direction is opposite to the second direction.

In the above solution, the upper row of terminals has three pairs of upper signal terminals, the lower row of terminals has three pairs of lower signal terminals, the three pairs of upper signal terminals and the three pairs of lower signal terminals have the same structural shape, the third fixing portion has a narrowed width in the horizontal direction relative to the third contact portion, and the sixth fixing portion has a narrowed width in the horizontal direction relative to the sixth contact portion.

In the above solution, two upper ground terminals and two upper power terminals are provided in the upper row of terminals, the two upper ground terminals are respectively provided at the head and the tail of the arrangement direction of the upper row of terminals, and the first fixing portion of the upper ground terminal has a first flange portion facing the arrangement center; the two upper power supply terminals are embedded in the upper signal terminals at intervals, and second fixed parts of the two upper power supply terminals are provided with second flange parts facing to one side of the upper grounding terminal close to the second flange parts; in the lower row of terminals, two lower grounding terminals and two lower power supply terminals are arranged respectively at the head and the tail of the arrangement direction of the lower row of terminals, and meanwhile, a fourth fixing part of each lower grounding terminal is provided with a third flange part facing to the arrangement center; the two lower power terminals are embedded in the lower signal terminal at intervals, and the fifth fixing parts of the two lower power terminals are provided with fourth flange parts facing to the side of the lower grounding terminal close to the fifth fixing parts.

The upper row of terminals is formed by punching on the first sheet of plate and is integrated with the upper insulator in an injection molding way; the lower row of terminals is formed by punching on the second sheet of plate and is integrated with the lower insulator in an injection molding mode.

In the scheme, at least two positioning columns are arranged, and the positioning columns and the upper insulator are integrally formed; the quantity and the position of the first positioning hole and the second positioning hole are matched with the positioning columns, the diameters of the first positioning hole and the second positioning hole are consistent, a plurality of convex ribs are arranged on the peripheral surface of the positioning columns, the convex ribs extend along the axial direction of the positioning columns, and the convex ribs are tightly matched with the inner hole walls of the first positioning hole and the second positioning hole.

In the above-mentioned solution, the first fixing portion is further provided with a first grounding pin protruding outward, the first grounding pin extends in the arrangement direction of the upper row of terminals and protrudes out of the plastic part, and the first grounding pin is in conductive connection with the housing.

The above-mentioned scheme is further, be equipped with second ground connection stabilizer blade on the well iron sheet, this second ground connection stabilizer blade protrusion plastic part and with shell conducting connection.

According to the utility model, by optimizing the structure of the electric connector, a positioning system is introduced, the upper tongue piece, the lower tongue piece and the middle iron sheet are guided to be sequentially aligned, superposed and combined, and the upper tongue piece, the lower tongue piece and the middle iron sheet are connected into a stable matrix; and finally, combining the plastic part with the base body in an injection molding connection mode to fixedly connect the upper tongue piece, the lower tongue piece and the middle iron piece. Meanwhile, a first lap joint part protruding downwards is constructed on the upper grounding terminal of the upper row of terminals, and a second lap joint part is constructed on the lower grounding terminal of the lower row of terminals. The combined structure of the utility model is stable and reliable, is convenient to manufacture and assemble, ensures the quality of the electric connector, improves the service performance and prolongs the service life, and meets the requirements of a new generation of USB TYPE-C connector.

Description of the drawings:

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is an exploded view of the embodiment of FIG. 1;

FIG. 3 is a schematic sectional view of the embodiment of FIG. 1 with parts assembled;

FIG. 4 is a partially exploded view of the embodiment of FIG. 1;

FIG. 5 is a schematic view of the combination of the upper and lower tongues and the middle iron sheet of the embodiment of FIG. 1;

FIG. 6 is an enlarged view of the positioning post structure of the embodiment of FIG. 1;

FIG. 7 is a schematic view of the upper row terminal and lower row terminal assembly of the embodiment of FIG. 1;

FIG. 8 is a schematic view of the embodiment of FIG. 7 from another perspective;

FIG. 9 is a schematic view of the relationship of the solder connections of the upper and lower rows of terminals of the embodiment of FIG. 1;

FIG. 10 is a schematic diagram of the upper row terminal structure of the embodiment of FIG. 1;

fig. 11 is a schematic view of the lower row terminal structure of the embodiment of fig. 1.

The specific implementation mode is as follows:

the conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Referring to fig. 1 to 11, which are schematic views of preferred embodiments of the present invention, the present invention relates to an electrical connector, especially a data transmission type-c connector, having a connection characteristic that is not divided into a front side and a back side, and supporting functions of charging, data transmission, display output, and the like of the USB standard. The electric connector comprises: an upper tongue piece 1, a lower tongue piece 2, a middle iron piece 3, a plastic piece 4 and a shell 5.

In the present embodiment, the upper tongue piece 1 is constituted by at least an upper insulator 11 and an upper row of terminals 12 positioned on the upper insulator; the upper row terminal 12 has an upper ground terminal 121, an upper power terminal 122 and an upper signal terminal 123, the upper ground terminal 121 has a first contact portion 1211 at the front end, a first soldering portion 1212 at the rear end, and a first fixing portion 1213 between the first contact portion 1211 and the first soldering portion 1212, the first fixing portion 1213 is fixedly connected to the upper insulator 11, and the first fixing portion 1213 is provided with a first bridging portion 1214 protruding downward. The lower tongue piece 2 is composed of at least a lower insulator 21 and a lower row of terminals 22 positioned on the lower insulator; the lower row terminal 22 has a lower ground terminal 221, a lower power terminal 222 and a lower signal terminal 223, the lower ground terminal 221 has a fourth contact portion 2211 at the front end, a fourth welding portion 2212 at the rear end and a fourth fixing portion 2213 between the fourth contact portion 2211 and the fourth welding portion 2212, the fourth fixing portion 2213 is fixedly connected to the lower insulator 21, and a second overlapping portion 2214 is disposed on the fourth fixing portion 2213. The upper row of terminals 12 and the lower row of terminals 22 are arranged to meet the requirement of positive and negative insertion matching of an external plug element, and have the use convenience suitable for both positive and negative insertion. The middle iron sheet 3 is embedded between the upper tongue sheet 1 and the lower tongue sheet 2, has a shielding effect, is used for improving the electrical properties of the upper row of terminals 12 and the lower row of terminals 22, and meets the use requirements of high frequency and the like. And the positioning system is also arranged, the positioning system not only guides the upper tongue piece 1, the lower tongue piece 2 and the middle iron piece 3 to be sequentially aligned, superposed and combined, but also connects the upper tongue piece 1, the lower tongue piece 2 and the middle iron piece 3 into a stable base body 10, so that the subsequent combined connection is convenient, the position relation of the upper row of terminals 12 and the lower row of terminals 22 can be ensured, and the reject ratio is reduced. Meanwhile, after the upper tongue piece 1 and the lower tongue piece 2 are combined, the first bridging portion 1214 protrudes downwards and forms conduction connection with the second bridging portion 2214, the middle iron sheet 3 provides the avoiding space 32 where the first bridging portion 1214 protrudes downwards, short-circuit connection between the upper grounding terminal and the lower grounding terminal is achieved through the structure, the area of the grounding terminal is increased equivalently, and due to the arrangement, the grounding terminal can achieve a better shielding effect, crosstalk generated by the signal terminal in the signal transmission process is reduced, the crosstalk is improved, and high frequency is met. The plastic part 4 is combined with the base body 10 in an injection molding connection mode, so that the upper tongue piece 1, the lower tongue piece 2 and the middle iron piece 3 are connected in a reinforcing mode, better mechanical structure is obtained, and usability is improved. The shell 5 is wrapped on the periphery of the plastic part 4, and the front end of the shell 5 is provided with a socket 51, and the socket 51 is used for matching with an external plug-in component. Preferably, the housing 5 is constructed by stamping iron sheets, and has good structure and usability.

Referring to fig. 2 to 6, in the present embodiment, the positioning system includes: the positioning post 13 protrudes downwards from the upper tongue piece 1, the first positioning hole 23 formed in the lower tongue piece 2 and the second positioning hole 31 formed in the middle iron sheet 3, and the positioning post 13 is a hot-melt plastic post; the positioning columns 13 are sleeved and connected through the first positioning holes 23 and the second positioning holes 31 to guide the alignment and superposition combination among the upper tongue piece 1, the lower tongue piece 2 and the middle iron piece 3; and the tail end of the positioning column 13 penetrates through the first positioning hole 23 and is subjected to hot melting riveting, so that the upper tongue piece 1, the lower tongue piece 2 and the middle iron piece 3 are connected into a stable base body 10. Furthermore, the number of the positioning columns 13 is at least two, and the positioning columns 13 are distributed in different directions so as to achieve better guiding and stable assembly. The number and the positions of the first positioning holes 23 and the second positioning holes 31 are matched with the positioning columns 13, the diameters of the first positioning holes 23 and the second positioning holes 31 are consistent, a plurality of convex ribs 131 are arranged on the peripheral surface of the positioning columns 13, the convex ribs 131 extend along the axial direction of the positioning columns 13, the convex ribs 131 are tightly matched with the inner hole walls of the first positioning holes 23 and the second positioning holes 31, accurate and stable combined connection is obtained, and looseness and dislocation are avoided; the assembling quality is improved.

In this embodiment, the first bridging portion 1214 is an elastic sheet extending from the first fixing portion 1213 and tends to move downward; the second strap 2214 is a platform extending from the second fixing portion 2213, and the first strap 1214 is elastically pressed down to be attached to the second strap 2214 to form a surface-contact conductive connection, so as to obtain a better short-circuit effect. The upper row of terminals and the lower row of terminals are assembled, short-circuit connection between the upper grounding terminal and the lower grounding terminal can be automatically realized, the grounding connection is relatively simple, convenient and reliable, the layout between the terminals is not influenced, the universality is strong, and the requirements of customers can be better met. Go up ground terminal and ground terminal connection of short circuit in the connector inside, do not expose, do not receive external force to through the elasticity overlap joint, guarantee short circuit connection's validity and durability, also optimized the equipment process of product, promote product equipment quality.

In this embodiment, the upper row terminal 12 is formed by punching on the first sheet of plate material and is integrally injection-molded with the upper insulator 11; the lower row of terminals 22 is formed by punching on a second sheet of plate and is integrated with the lower insulator 21 by injection molding; therefore, the manufacturing is convenient, the position relation between the terminals is good, and the follow-up assembly and use are facilitated. The upper power supply terminal 122 has a second contact portion 1221 at the front end, a second solder portion 1222 at the rear end, and a second fixing portion 1223 located between the second contact portion 1221 and the second solder portion 1222; the upper signal terminal 123 has a third contact portion 1231 at the front end, a third soldering portion 1232 at the rear end, and a third fixing portion 1233 between the third contact portion 1231 and the third soldering portion 1232; the lower power terminal 222 of the lower row of terminals 22 has a fifth contact portion 2221 at the front end, a fifth welding portion 2222 at the rear end, and a fifth fixing portion 2223 between the fifth contact portion 2221 and the fifth welding portion 2222; the lower signal terminal 223 has a sixth contact portion 2231 at the front end, a sixth soldering portion 2232 at the rear end, and a sixth fixing portion 2233 located between the sixth contact portion 2231 and the sixth soldering portion 2232. The first contact 1211, the second contact 1221 and the third contact 1231 of the upper row terminal are vertically aligned with the fourth contact 2211, the fifth contact 2221 and the sixth contact 2231 of the lower row terminal, respectively, while the first solder 1212, the second solder 1222 and the third solder 1232 of the upper row terminal are vertically offset from the fourth solder 2212, the fifth solder 2222 and the sixth solder 2232 of the lower row terminal, respectively, and the first solder 1212, the second solder 1222 and the third solder 1232 of the upper row terminal are horizontally aligned in a row and are offset together in a first direction, and the fourth solder 2212, the fifth solder 2222 and the sixth solder 2232 of the lower row terminal are horizontally aligned in a row and are offset together in a second direction, which is opposite to the first direction. Therefore, the welding position distance between the welding parts of the upper and lower rows of terminals can be increased in a limited space, so that tin connection is prevented, and the assembly quality and efficiency are improved.

Further, the upper row of terminals has three pairs of upper signal terminals 123, the lower row of terminals has three pairs of lower signal terminals 223, the three pairs of upper signal terminals 123 and the three pairs of lower signal terminals 223 have the same structure, and the third fixing portion 1233 has a narrowed width in the horizontal direction with respect to the third contact portion 1231, and the sixth fixing portion 2233 has a narrowed width in the horizontal direction with respect to the sixth contact portion 2231. The structure can effectively reduce the potential difference generated when the current passes through each section, and reduce the interference of the terminal to the terminal; and the gaps between the pairs of upper signal terminals 123 and between the pairs of lower signal terminals 223 increase, improving the impedance characteristics between the signal terminals and thereby meeting the impedance requirements of the electrical connector at a better rate.

Further, of the upper row terminals, two upper ground terminals 121 and two upper power supply terminals 122 are provided, the two upper ground terminals 121 are respectively disposed at the head and the tail of the upper row terminal arrangement direction, and the first fixing portion 1213 of the upper ground terminal 121 has a first flange portion 1215 toward the arrangement center; the two upper power supply terminals 122 are embedded in the upper signal terminal 123 with an interval therebetween, and the second fixing portion 1223 of the two upper power supply terminals 122 has a second flange portion 1224 facing the upper ground terminal side that is close thereto. Two lower grounding terminals 221 and two lower power terminals 222 of the lower row of terminals are provided, and the two lower grounding terminals 221 are respectively arranged at the head and the tail of the lower row of terminals in the arrangement direction, and meanwhile, the fourth fixing portion 2213 of the lower grounding terminal 221 is provided with a third flange portion 2215 facing the arrangement center; the two lower power terminals 222 are embedded in the lower signal terminal 223 at intervals, and the fifth fixing portion 2223 of the two lower power terminals 222 has a fourth flange portion 2224 facing the lower grounding terminal side to which it is close. The design of the first, second, third and fourth flange parts can effectively increase the sectional area of the corresponding terminal, increase the capacitance and effectively reduce the impedance. And the upper grounding terminal and the lower grounding terminal form short circuit connection, so that the grounding terminal has a better shielding effect, the crosstalk generated by the signal terminal in the signal transmission process is reduced, the crosstalk is improved, the use performance of the electric connector is improved, and the high frequency is met.

Furthermore, the first fixing portion 1213 is further provided with a first grounding pin 1216 protruding outward, the first grounding pin 1216 extends toward the arrangement direction of the upper row of terminals 12 and protrudes out of the plastic member 4, and the first grounding pin 1216 is electrically connected to the housing 5. And the middle iron sheet 3 is provided with a second grounding support leg 33, and the second grounding support leg 33 protrudes out of the plastic part 4 and is in conductive connection with the shell 5. Preferably, the first grounding leg 1216 and the second grounding leg 33 are oriented the same, which facilitates the manufacture of the housing for good conductive connection therebetween.

Referring to fig. 9, the following table shows the definition of each terminal in this embodiment:

tests prove that the utility model obtains the following beneficial effects through the structure and arrangement design of the assembly structure and the terminals:

introducing a positioning system, guiding the upper tongue piece, the lower tongue piece and the middle iron sheet to be sequentially aligned, superposed and combined, and connecting the upper tongue piece, the lower tongue piece and the middle iron sheet into a stable matrix; and finally, combining the plastic part with the base body in an injection molding connection mode to fixedly connect the upper tongue piece, the lower tongue piece and the middle iron piece. Meanwhile, a first lap joint part protruding downwards is constructed on the upper grounding terminal of the upper row of terminals, and a second lap joint part is constructed on the lower grounding terminal of the lower row of terminals. The combined structure of the utility model is stable and reliable, is convenient to manufacture and assemble, ensures the quality of the electric connector, improves the service performance and prolongs the service life, and meets the requirements of a new generation of USB TYPE-C connector.

It is to be understood that the foregoing detailed description of the present invention has been provided only for the purpose of illustrating the technical spirit and features of the present invention, and the present invention is not limited thereto.

Claims (10)

1. An electrical connector, comprising:

an upper tongue piece (1), the upper tongue piece (1) being composed of at least an upper insulator (11) and an upper row of terminals (12) positioned on the upper insulator; the upper row terminal (12) is provided with an upper grounding terminal (121), the upper grounding terminal (121) is provided with a first contact part (1211) at the front end, a first welding part (1212) at the rear end and a first fixing part (1213) positioned between the first contact part (1211) and the first welding part (1212), the first fixing part (1213) is fixedly connected with the upper insulator (11), and the first fixing part (1213) is provided with a first bridging part (1214) protruding downwards;

a lower tongue piece (2), the lower tongue piece (2) being composed of at least a lower insulator (21) and a lower row of terminals (22) positioned on the lower insulator; the lower row terminal (22) is provided with a lower grounding terminal (221), the lower grounding terminal (221) is provided with a fourth contact part (2211) at the front end, a fourth welding part (2212) at the rear end and a fourth fixing part (2213) positioned between the fourth contact part (2211) and the fourth welding part (2212), the fourth fixing part (2213) is fixedly connected with the lower insulator (21), and a second overlapping part (2214) is arranged on the fourth fixing part (2213);

the middle iron sheet (3) is embedded between the upper tongue piece (1) and the lower tongue piece (2), and is also provided with a positioning system which not only guides the upper tongue piece (1), the lower tongue piece (2) and the middle iron sheet (3) to be sequentially aligned, superposed and combined, but also connects the upper tongue piece (1), the lower tongue piece (2) and the middle iron sheet (3) into a stable base body (10); meanwhile, the first bridging part (1214) protrudes downwards and forms conductive connection with the second bridging part (2214), and the middle iron sheet (3) provides an avoiding space (32) for the first bridging part (1214) to protrude downwards;

the plastic part (4) is combined with the base body (10) in an injection molding connection mode, so that the upper tongue piece (1), the lower tongue piece (2) and the middle iron piece (3) are connected in a reinforcing mode;

the shell (5), this shell (5) parcel is in the periphery of plastic part (4), and the front end of shell (5) is equipped with socket (51), and this socket (51) are used for cooperating outside to inserting the component grafting.

2. An electrical connector as defined in claim 1, wherein said alignment system comprises: the positioning post (13) protrudes downwards from the upper tongue piece (1), a first positioning hole (23) formed in the lower tongue piece (2) and a second positioning hole (31) formed in the middle iron sheet (3), and the positioning post (13) is a hot-melt plastic post; the positioning columns (13) are sleeved with the first positioning holes (23) and the second positioning holes (31) to guide the alignment and superposition combination among the upper tongue piece (1), the lower tongue piece (2) and the middle iron piece (3); and the tail end of the positioning column (13) finally penetrates through the first positioning hole (23) and is subjected to hot melting riveting, so that the upper tongue piece (1), the lower tongue piece (2) and the middle iron piece (3) are connected into a stable base body (10).

3. The electrical connector of claim 1, wherein the first bridging portion (1214) is a spring plate extending from the first fixing portion (1213), the second bridging portion (2214) is a platform extending from the fourth fixing portion (2213), and the first bridging portion (1214) is elastically pressed down against the second bridging portion (2214) to form a face-to-face conductive connection.

4. An electrical connector as claimed in claim 1, wherein the electrical connector is a data transmission type-c connector, and the upper row of terminals (12) further comprises an upper power terminal (122) and an upper signal terminal (123); the upper power supply terminal (122) has a second contact portion (1221) at the front end, a second solder portion (1222) at the rear end, and a second fixing portion (1223) located between the second contact portion (1221) and the second solder portion (1222); the upper signal terminal (123) has a third contact portion (1231) at the front end, a third soldering portion (1232) at the rear end, and a third fixing portion (1233) located between the third contact portion (1231) and the third soldering portion (1232); the lower row of terminals (22) further comprises a lower power terminal (222) and a lower signal terminal (223), the lower power terminal (222) is provided with a fifth contact part (2221) at the front end, a fifth welding part (2222) at the rear end and a fifth fixing part (2223) positioned between the fifth contact part (2221) and the fifth welding part (2222); the lower signal terminal (223) is provided with a sixth contact part (2231) at the front end, a sixth welding part (2232) at the rear end and a sixth fixing part (2233) positioned between the sixth contact part (2231) and the sixth welding part (2232);

the first contact portion 1211, the second contact portion 1221 and the third contact portion 1231 of the upper row of terminals are vertically aligned with the fourth contact portion 2211, the fifth contact portion 2221 and the sixth contact portion 2231 of the lower row of terminals, respectively, while the first solder portion 1212, the second solder portion 1222, the third solder portion 1232 of the upper row of terminals are vertically offset from the fourth solder portion 2212, the fifth solder portion 2222 and the sixth solder portion 2232 of the lower row of terminals, respectively, and the first solder portion 1212, the second solder portion 1222 and the third solder portion 1232 of the upper row of terminals are horizontally aligned and offset together in the first direction, and the fourth solder portion 2212, the fifth solder portion 2222 and the sixth solder portion 2232 of the lower row of terminals are horizontally aligned and offset together in the second direction, the first direction is opposite to the second direction.

5. The electrical connector of claim 4, wherein the upper row of terminals has three pairs of upper signal terminals (123), the lower row of terminals has three pairs of lower signal terminals (223), the three pairs of upper signal terminals (123) and the three pairs of lower signal terminals (223) are configured to have substantially identical configurations, and the third securing portion (1233) has a reduced width in a horizontal direction with respect to the third contact portion (1231) and the sixth securing portion (2233) has a reduced width in a horizontal direction with respect to the sixth contact portion (2231).

6. An electrical connector as defined in claim 4, wherein: two upper ground terminals (121) and two upper power supply terminals (122) in the upper row of terminals are arranged, the two upper ground terminals (121) are respectively arranged at the head and the tail of the arrangement direction of the upper row of terminals, and meanwhile, a first fixing part (1213) of each upper ground terminal (121) is provided with a first flange part (1215) facing to the arrangement center; the two upper power terminals (122) are embedded in the upper signal terminal (123) at intervals, and the second fixed part (1223) of the two upper power terminals (122) is provided with a second flange part (1224) facing to the upper grounding terminal side close to the upper grounding terminal; two lower grounding terminals (221) and two lower power supply terminals (222) in the lower row of terminals are provided, the two lower grounding terminals (221) are respectively arranged at the head and the tail of the arrangement direction of the lower row of terminals, and meanwhile, a fourth fixing part (2213) of the lower grounding terminal (221) is provided with a third flange part (2215) facing the arrangement center; the two lower power terminals (222) are embedded in the lower signal terminal (223) at intervals, and the fifth fixing portion (2223) of the two lower power terminals (222) has a fourth flange portion (2224) facing the side of the lower grounding terminal that is close to.

7. An electrical connector as claimed in claim 1, 4, 5 or 6, wherein: the upper row of terminals (12) are formed by punching on a first sheet of plate and are integrated with the upper insulator (11) in an injection molding way; the lower row of terminals (22) is formed by punching on a second sheet of plate material and is integrated with the lower insulator (21) in an injection molding mode.

8. An electrical connector according to claim 2, wherein there are at least two positioning posts (13), and the positioning posts (13) are integrally formed with the upper insulator (11); the number and the position of the first positioning hole (23) and the second positioning hole (31) are matched with the positioning column (13), the aperture of the first positioning hole (23) is consistent with that of the second positioning hole (31), a plurality of convex ribs (131) are arranged on the outer peripheral surface of the positioning column (13), the convex ribs (131) extend along the axial direction of the positioning column (13), and the convex ribs (131) are tightly matched with the inner hole walls of the first positioning hole (23) and the second positioning hole (31).

9. An electrical connector as claimed in claim 1, wherein the first fixing portion (1213) further comprises a first grounding leg (1216) protruding outward, the first grounding leg (1216) extends toward the arrangement direction of the upper row terminals (12) and protrudes out of the plastic member (4), and the first grounding leg (1216) is conductively connected to the housing (5).

10. An electrical connector according to claim 1, wherein the middle iron piece (3) is provided with a second grounding pin (33), and the second grounding pin (33) protrudes out of the plastic member (4) and is conductively connected with the housing (5).

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