CN111129873B

CN111129873B - Grounding terminal assembly, terminal module and electric connector

Info

Publication number: CN111129873B
Application number: CN201811279906.6A
Authority: CN
Inventors: 肖顺群
Original assignee: Shanghai Aerospace Science and Industry Appliance Co Ltd
Current assignee: Shanghai Aerospace Science and Industry Appliance Co Ltd
Priority date: 2018-10-30
Filing date: 2018-10-30
Publication date: 2021-09-03
Anticipated expiration: 2038-10-30
Also published as: CN111129873A

Abstract

The application provides a grounding terminal assembly, an electric connector and an electric connector assembly. The utility model provides a ground terminal subassembly, includes a pair of ground terminal body and connects a pair ofly the shielding piece of ground terminal body, the ground terminal body includes first contact site, connects the second fixed part of first upper contact site and first contact site, the shielding piece includes certainly the second connecting portion that the second fixed part extends and certainly the first shielding part that the second connecting portion extends, first shielding part with the ground terminal body is not coplane, makes the ground terminal subassembly has the shielding effect of preferred.

Description

Grounding terminal assembly, terminal module and electric connector

Technical Field

The present invention relates to a ground terminal assembly, a terminal module and an electrical connector, and more particularly, to a ground terminal assembly, a terminal module and an electrical connector for high-density and high-speed transmission in the field of communications.

Background

In the electronics industry, circuit boards are typically connected to other electronic devices through electrical connectors. With the rapid development of information technology, the functions of electrical connectors are gradually enhanced and improved. The demand for high speed increases in data storage and faster transmission speeds have caused large changes in the interface, and high density electrical connectors have been produced and widely used in the electronics industry. Generally, the number of terminals of the high-density electrical connector is large, and the size of the electrical connector cannot be too large due to the limitation of the installation space, so that the terminal pitch becomes very small, and the phenomenon of internal electromagnetic interference during signal transmission is serious. For a high-density electrical connector with a precise structure, the small electromagnetic interference generated by other external electronic devices can easily affect the telecommunication transmission.

Disclosure of Invention

The application provides a better ground terminal subassembly of shielding effect, terminal module and electric connector.

One aspect of the present application provides a ground terminal assembly, including a pair of ground terminal body and connect a pair ofly the shielding piece of ground terminal body, the ground terminal body includes first last contact site, first contact site, connection the second fixed part of first last contact site and first contact site, the shielding piece includes certainly the second connecting portion that the second fixed part extends and certainly the first shielding part that the second connecting portion extends, first shielding part with the ground terminal body is not coplane.

Furthermore, the ground terminal assembly comprises a plurality of ground terminal bodies and a plurality of shielding sheets which are arranged at intervals, the plurality of ground terminal bodies are positioned in the same row, the plurality of first shielding parts are positioned in the same row, and the ground terminal bodies are arranged in parallel with the first shielding parts and the second shielding parts.

Further, one of the ground terminal bodies is provided apart from the other adjacent ground terminal body.

Further, the grounding terminal assembly is formed by stamping and bending a metal plate.

Another aspect of the present application provides a terminal module including a first terminal module and a second terminal module assembled together, the first terminal module includes a first body and a signal terminal which are integrally formed, the second terminal module includes the above-mentioned ground terminal assembly and a third body integrally formed to the ground terminal assembly, an adjacent pair of the ground terminal bodies are located on a first side and a second side of the signal terminal, the first shielding portion is located on a third side of the signal terminal, the first side and the second side are disposed opposite to each other, and the third side is disposed perpendicular to the first side.

Further, the signal terminal includes a first contact portion, the shielding plate includes a second shielding portion extending from the first shielding portion, a pair of adjacent first upper contact portions are located on a first side and a second side of the first contact portion, the second shielding portion is located on a third side of the first contact portion, the first side and the second side are oppositely disposed, and the third side is perpendicular to the first side.

Further, the terminal module includes a plurality of the first terminal modules assembled to the second terminal module, the first terminal module includes the signal terminal and a first body and a second body integrally formed to the signal terminal, the third body includes a second insulating block integrally formed to the first shielding portion, and the second insulating block is located between the first body and the second body.

Further, the first terminal module comprises a plurality of signal terminals, and a first body and a second body which are integrally formed with the signal terminals, the first body comprises a first base part and a plurality of first positioning blocks extending from the first base part, and the third body comprises a third accommodating groove accommodating the first base part and a first accommodating groove accommodating the first positioning blocks.

Further, the third body includes a first insulating block fixed to the ground terminal body, the first insulating block includes a bottom, a first limiting portion and a second limiting portion extending from the bottom, and the third accommodating groove is located between the first limiting portion and the second limiting portion.

Further, the third body includes a second insulating block and a third insulating block fixed to the shield plate, and the first receiving groove is located between the second insulating block and the third insulating block.

Further, the first locating block is in interference fit with the first accommodating groove and/or the first base is in interference fit with the third accommodating groove.

Another aspect of the present application provides an electrical connector, which includes a plastic body and the terminal module, wherein the terminal module is assembled to the plastic body.

The shielding piece of the grounding terminal assembly is connected with the adjacent pair of grounding terminal bodies and forms the concave part, so that the grounding terminal assembly has a better shielding effect.

Drawings

Fig. 1 is a perspective view of an electrical connector assembly shown in an embodiment of the present application;

fig. 2 is a cross-sectional schematic view of the electrical connector assembly shown in fig. 1;

fig. 3 is an exploded view of the electrical connector shown in fig. 1;

fig. 4 is a perspective view of a first terminal module of the electrical connector shown in fig. 3;

fig. 5 is a perspective view of a signal terminal of the first terminal module shown in fig. 4;

fig. 6 is a perspective view of a second terminal module of the electrical connector shown in fig. 3;

FIG. 7 is a perspective view of the ground terminal assembly of the second terminal module shown in FIG. 6;

FIG. 8 is a perspective view of another embodiment of the ground terminal assembly shown in FIG. 7;

fig. 9 is an exploded view of another embodiment of the terminal module shown in fig. 3;

FIG. 10 is a perspective view of the mating electrical connector shown in FIG. 1;

FIG. 11 is a perspective view of a fourth body of the mating electrical connector shown in FIG. 10;

fig. 12 is a partial enlarged view at a of the fourth body shown in fig. 11;

fig. 13 is a perspective view of a third terminal module of the mating electrical connector of fig. 10;

FIG. 14 is a perspective view of an inter-mating ground terminal assembly of the inter-mating electrical connector of FIG. 10;

fig. 15 is a perspective view of another embodiment of the inter-mating ground terminal assemblies shown in fig. 14.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible components of one or more of the associated listed items.

Referring to fig. 1 to 2, the electrical connector assembly of the present application includes an electrical connector 2 and a mating electrical connector 1 mated with the electrical connector 2.

Referring to fig. 3, the electrical connector 2 includes a plastic body 20 and a plurality of terminal modules 21 assembled to the plastic body 20. The terminal module 21 includes a first terminal module 210 and a second terminal module 211 assembled together.

The plastic body 20 includes a lower sidewall 201, a pair of first sidewalls 202 extending from the lower sidewall 201, and a pair of second sidewalls 203 connecting the pair of first sidewalls 202. The lower side wall 201, the first side wall 202 and the second side wall 203 enclose a receiving portion 2031. The lower sidewall 201 includes a number of terminal apertures 2010. The second sidewall 203 includes a plurality of positioning holes 2033 and a plurality of receiving portions 2032.

Referring to fig. 4 to 5, the first terminal module 210 includes a first body 2101, a second body 2103 and a plurality of signal terminals 2102, which are integrally formed. The signal terminal 2102 includes a first contact portion 21021 and a second contact portion 21022, a first fixing portion 21023 located between the first contact portion 21021 and the second contact portion 21022, a second fixing portion 21024, and a first connection portion 21025 connecting the first fixing portion 21023 and the second fixing portion 21024. The first body 2101 is fixed to the first fixing portion 21023, and the second body 2103 is fixed to the second fixing portion 21024. The first body 2101 includes a first base 21011 and a number of first positioning blocks 21012 extending from the first base 21011. The second body 2103 includes a second base 21031 and a plurality of second positioning blocks 21032 extending from the second base 21031.

Referring to fig. 6 to 7, the second terminal module 211 includes a third body 2110 and a ground terminal assembly 2111 which are integrally formed. The third body 2110 includes a fastener 2112 assembled into a positioning hole 2033 of the plastic body 20 and fastened to the plastic body 20, so as to fix the second terminal module 211 to the plastic body 20.

The ground terminal assembly 2111 is formed by punching and bending a metal plate. The ground terminal assembly 2111 includes a plurality of ground terminal bodies 21110 and a plurality of shielding plates 21116 arranged at intervals. The ground terminal body 21110 includes a first upper contact portion 21112, a first lower contact portion 21113, and a second fixing portion 21114 connecting the first upper contact portion 21112 and the first lower contact portion 21113. The shield piece 21116 includes a second connection portion 21119 extending from the second fixing portion 21114, a first shield portion 21115 extending from the second connection portion 21119, and a second shield portion 21118 extending from the first shield portion 21115. The second fixing portion 21114 is parallel to but not coplanar with the first shielding portion 21115. The first shield portion 21115 and a pair of the second connection portions 21119 at opposite ends of the first shield portion 21115 enclose a recessed portion 21111.

The plurality of ground terminal bodies 21110 are connected together by the first shielding portion 21115, which facilitates manufacturing. Referring to fig. 8, in another embodiment, one of the ground terminal bodies 21110 may be disconnected from the other ground terminal bodies 21110, so as to achieve the purpose of shunting and transmitting various signals or power sources, i.e., the disconnected ground terminal body 21110 may be used as a signal terminal, thereby meeting various requirements of customers.

The third body 2110 includes a plurality of first insulation blocks 21100, a plurality of second insulation blocks 21101, a plurality of third insulation blocks 21102, a plurality of first receiving grooves 21103, and a plurality of second receiving grooves 21104. A plurality of the first insulating blocks 21100 are fixed to a plurality of the ground terminal bodies 21110, respectively. A plurality of the second insulation blocks 21101 and the third insulation blocks 21102 are fixed to a plurality of the shield plates 21116, respectively. The first receiving groove 21103 and the second receiving groove 21104 are located at two opposite sides of the second insulating block 21101. The first receiving groove 21103 is located between the second insulation block 21101 and the third insulation block 21102.

The first insulating block 21100 includes a bottom portion 21105, a first retaining portion 21106 extending from the bottom portion 21105, and a second retaining portion 21107. The opposite sides of the first limiting portion 21106 are provided with a third accommodating groove 21108 and a fourth accommodating groove 21109. The third receiving groove 21108 is located between the first limiting portion 21106 and the second limiting portion 21107. When the first terminal module 210 is assembled to the second terminal module 211, the first base 21011 is located in the third receiving groove 21108 and is in interference fit with the first limiting portion 21106 and the second limiting portion 21107; the first positioning block 21012 is positioned in the first receiving slot 21103 and is in interference fit with the second insulating block 21101 and the third insulating block 21102 or a pair of the bottom portions 21105; the second base 21031 is positioned within the fourth receiving slot 21109; the second positioning block 21032 is located in the second receiving slot 21104 and is in interference fit with the pair of bottom portions 21105. The arrangement is such that the first body 2101 and the second body 2103 are securely positioned to the third body 2110.

The first body 2101 and the second body 2103 are securely positioned to the third body 2110 by way of an interference fit, but the present application is not limited thereto. In another embodiment, bumps (not shown) can be provided on the first body 2101 and the second body 2103 to be in interference fit with the third body 2110. Alternatively, the bump may be disposed on the third body 2110.

As shown in fig. 3, after the first terminal module 210 is assembled to the second terminal module 211, the first connection portion 21025 of the signal terminal 2102 is located in a space (not shown) surrounded by the first limiting portion 21106 and the second insulating block 21101; the first contact portions 21021 of the signal terminals 2102 and the first upper contact portions 21112 of the ground terminal bodies 21110 are in the same row and are arranged at intervals; the second contact portions 21022 of the signal terminals 2102 and the first lower contact portions 21113 of the ground terminal bodies 21110 are in the same row and are arranged at intervals; the second shield portion 21118 of the shield plate 21116 is located on the side of the first contact portion 21021 of the signal terminal 2102. The arrangement is such that the shielding plate 21116 has better shielding effect. The first connection portions 21025 of the signal terminals 2102 are exposed and come into contact with air, thereby improving the electrical performance of the electrical connector.

When the terminal module 21 is assembled to the plastic body 20, the terminal module 21 is assembled to the accommodating portion 2031 of the plastic body 20, and the fastener 2112 of the second terminal module 211 is assembled into the positioning hole 2033 of the plastic body 20 and fastened to the plastic body 20, so as to fix the second terminal module 211 to the plastic body 20. The first upper contact portion 21112 of the ground terminal assembly 2111 and the first contact portion 21021 of the signal terminal 2102 are received in the terminal hole 2010 of the plastic body 20.

The first body 2101 and the second body 2103 of the first terminal module 210 connect the signal terminals 2102 together, but the present application is not limited thereto. Referring to fig. 9, in another embodiment, the terminal module 21 includes a plurality of first terminal modules 221 assembled to the second terminal module 220. The first terminal module 221 includes a first body 2211, a second body 2212 and signal terminals 2210 integrally formed. The second body 2212 includes a second base 22120 and a second positioning block 22121 extending from the second base 22120.

The third body 2201 comprises a plurality of first insulating blocks 22010, a plurality of second insulating blocks 22011, a plurality of first receiving grooves 22012 and a plurality of second receiving grooves 22013. The first receiving groove 22012 and the second receiving groove 22013 are located at two opposite sides of the second insulating block 22011. The first insulation block 22010 comprises a pair of third receiving grooves 22014. When the first terminal module 221 is assembled to the second terminal module 220, the first body 2211 is located in the first receiving groove 22012, the second base portion 22120 of the second body 2212 is located in the third receiving groove 22014, and the second positioning block 22121 is located in the second receiving groove 22013. The first terminal module 221 in this embodiment is a free-standing design, and the third body 2201 is only provided with the first insulation blocks 22010 and the second insulation blocks 22011, so that the third insulation blocks are eliminated, and the electrical connector is further miniaturized.

Referring to fig. 10 to 14, the electrical mating connector 1 includes a fourth body 10, a mating ground terminal assembly 11 fixed to the fourth body 10, and a plurality of third terminal modules 12. The third terminal module 12 includes a pair of mating signal terminals 121 and a fifth body 122 integrally formed with the pair of mating signal terminals 121. The inter-ground terminal assembly 11 is assembled to the fourth body 10, but the present application is not limited thereto. In another embodiment, the complementary ground terminal assembly 11 may be integrally formed with the fourth body 10. The mating signal terminals 121 and the fifth body 122 are integrally formed and then assembled to the fourth body 10, which is not limited in this application. In another embodiment, the mating signal terminals 121 may be directly integrated with the fourth body 10 or directly assembled to the fourth body 10.

The fourth body 10 includes a bottom wall 101, and a first side wall 102 and a second side wall 103 extending from opposite ends of the bottom wall 101. The bottom wall 101, the first side wall 102 and the second side wall 103 enclose a space 104. The bottom wall 101 includes a plurality of rows of first holes 1010 and second holes 1011 arranged at intervals. The first hole 1010 communicates with the second hole 1011. The first holes 1010 in two adjacent rows and the second holes 1011 in two adjacent rows are offset. The first hole 1010 in the nth row is aligned with the first hole 1010 in the (n + 2) th row (n is an integer of 1 or more). The second aperture 1011 in the nth row is aligned with the second aperture 1011 in the (n + 2) th row. The first side wall 102 and/or said second side wall 103 comprise ribs 1030. The first side wall 102 and/or the second side wall 103 comprise a first end 1031 close to the bottom wall 101 and a second end 1032 opposite to the first end 1031. The rib 1030 extends from the second end 1032 to the first end 1031 and is connected to the bottom wall 101, which is not limited in this application. In another embodiment, the raised rib 1030 may be a protrusion disposed at the second end 1032, the protrusion not extending to the first end. The rib 1030 includes a guide 10301.

Referring to fig. 13 with emphasis, the third terminal module 12 is assembled to the second hole 1011 of the fourth body 10. The mating signal terminal 121 includes a third contact portion 1210, a fourth contact portion 1211, and a holding portion 1212 between the third contact portion 1210 and the fourth contact portion 1211. The fifth body 122 is integrally formed to the holding portion 1212. The fifth body 122 includes a pair of first surfaces 1220 opposite to each other, and a pair of first protrusions 1223 connecting the pair of first surfaces 1220 and the second surface 1222 and extending from the pair of first surfaces 1220, and a second protrusion 1225 extending from the second surface 1222, respectively. When the third terminal module 12 is assembled to the second hole 1011 of the fourth body 10, the first and second protruding

portions

1223 and 1225 are in interference fit with the fourth body 10 to fix the third terminal module 12 to the fourth body 10.

The inter-ground terminal assembly 11 is assembled to the first hole 1010 of the fourth body 10. Referring with emphasis to fig. 14, the inter-fitting ground terminal assembly 11 is formed by stamping and bending a metal plate material. The inter-mating ground terminal assembly 11 includes a plurality of inter-mating ground terminal bodies 110, connection portions 113 extending from the inter-mating ground terminal bodies 110, and shield portions 114 connecting the connection portions 113 of an adjacent pair of the inter-mating ground terminal bodies 110. The inter-mating ground terminal body 110 includes a main body portion 1101, and second upper and

lower contact portions

1102 and 1103 extending from opposite ends of the main body portion 1101. The connecting portion 113 is bent and extended from the main body 1101. The shielding part 114 is assembled to the second hole 1011 of the fourth body 10. A direction of the second upper contact portion 1102 to the second lower contact portion 1103 is defined as a first direction. The shield portion 114 is disposed in parallel with the main body portion 1101. The width of the shielding portion 114 in the first direction is greater than the width of the connecting portion 113 in the first direction. The two adjacent inter-mating ground terminal bodies 110, the connecting portions 113, and the shielding portions 114 enclose a receiving space 1140. The third terminal module 12 is at least partially located in the receiving space 1140. When the inter-ground terminal assembly 11 is assembled to the fourth body 10, a plurality of the inter-ground terminal bodies 110 can be assembled at the same time, increasing the assembly efficiency. The third terminal module 12 is at least partially located in the receiving space 1140, and the mating signal terminals 121 of the third terminal module 12 are located between the adjacent pair of the mating ground terminal bodies 110, so that the electromagnetic shielding effect of the mating ground terminal assembly 11 is increased.

Referring to fig. 15, in another embodiment, one of the mating ground terminal bodies 110 may be disconnected from the other mating ground terminal bodies 110 to achieve the purpose of shunting and transmitting various signals or power sources, that is, the disconnected mating ground terminal body 110 may be used as a mating signal terminal to meet the assembly requirements of different customers.

Referring to fig. 10, after the mating ground terminal assembly 11 and the third terminal assembly 12 are assembled to the fourth body 10, the third contact portion 1210 of the mating signal terminal 121 and the second upper contact portion 1102 of the mating ground terminal body 110 are located in the space 104 of the fourth body 10. The third terminal module 12 is at least partially located in the receiving space 1140 formed by the mating ground terminal assembly 11. That is, the adjacent pair of the ground terminal bodies 110 are located at a first side and a second side of the mating signal terminal 121, and the shielding part 114 is located at a third side of the mating signal terminal 121, the first side and the second side being opposite to each other, and the third side being perpendicular to the first side. This arrangement provides a better shielding effect of the inter-fitting ground terminal assembly 11.

Referring to fig. 1 to 2, when the electrical connector 2 is assembled into the space 104 of the mating electrical connector 1, the rib 1030 of the mating electrical connector 1 is assembled into the receiving portion 2032 of the electrical connector 2. It is effectively ensured that the third contact portions 1210 of the mating signal terminals 121 of the mating electrical connector 1 are aligned with and electrically connected to the first contact portions 21021 of the signal terminals 2102 of the electrical connector 2, and the second upper contact portions 1102 of the mating ground terminal body 110 of the mating electrical connector 1 are aligned with and electrically connected to the first upper contact portions 21112 of the ground terminal body 21110 of the electrical connector 2. At the same time, positioning the electrical connector 2 to the mating electrical connector 1 prevents wobbling of the electrical connector 2.

The shielding plates 21116 of the ground terminal assembly 2111 of the present application connect an adjacent pair of the ground terminal bodies 21110 and form recesses 21111, so that the ground terminal assembly 2111 has a better shielding effect. One or more of the ground terminal bodies 21110 in the ground terminal assemblies 2111 can be disconnected from the other ground terminal bodies 21110, so as to achieve the purposes of shunting and transmitting various signals or power sources, i.e., the disconnected ground terminal bodies 21110 can be used as signal terminals, thereby meeting various requirements of customers.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. A terminal module comprising a first terminal module and a second terminal module assembled together, the first terminal module comprising a first body and a signal terminal which are integrally formed, the second terminal module comprising a ground terminal assembly and a third body integrally formed to the ground terminal assembly, the ground terminal assembly comprising a pair of ground terminal bodies and a shield plate connecting the pair of ground terminal bodies, the ground terminal body comprising a first upper contact portion, a first lower contact portion, a second fixing portion connecting the first upper contact portion and the first lower contact portion, the shield plate comprising a second connecting portion extending from the second fixing portion and a first shield portion extending from the second connecting portion, the first shield portion being non-coplanar with the ground terminal body, an adjacent pair of the ground terminal bodies being located on a first side and a second side of the signal terminal, the first shielding part is located on a third side of the signal terminal, the first side and the second side are oppositely arranged, the third side and the first side are vertically arranged, the first body comprises a first base part and a plurality of first positioning blocks extending from the first base part, and the third body comprises a third accommodating groove accommodating the first base part and a first accommodating groove accommodating the first positioning blocks.

2. The terminal module of claim 1, wherein the ground terminal assembly includes a plurality of ground terminal bodies and a plurality of shield plates arranged at intervals, the plurality of ground terminal bodies are located in a same row, the plurality of first shield portions are located in a same row, and the ground terminal bodies are arranged in parallel with the first shield portions.

3. The terminal module of claim 2, wherein one of the ground terminal bodies is disconnected from another adjacent ground terminal body.

4. A terminal module according to any one of claims 1-3, wherein the ground terminal assembly is stamped and bent from a sheet metal material.

5. The terminal module of claim 1, wherein the signal terminals include first contact portions, the shield strips include second shield portions extending from the first shield portions, adjacent pairs of the first upper contact portions are located on first and second sides of the first contact portions, the second shield portions are located on third sides of the first contact portions, the first and second sides are disposed opposite to each other, and the third sides are perpendicular to the first sides.

6. The terminal module of claim 1, including a number of the first terminal modules assembled to the second terminal module, the first terminal module including the signal terminals and first and second bodies integrally molded to the signal terminals, the third body including a second insulating block integrally molded to the first shield portion, the second insulating block being located between the first and second bodies.

7. The terminal module of claim 1, wherein the first terminal module includes a second body integrally molded to the plurality of signal terminals.

8. The terminal module of claim 7, wherein the third body includes a first insulating block fixed to the ground terminal body, the first insulating block includes a bottom portion, a first limiting portion and a second limiting portion extending from the bottom portion, and the third receiving groove is located between the first limiting portion and the second limiting portion.

9. The terminal module of claim 7, wherein the third body includes a second dielectric block and a third dielectric block secured to the shield plate, the first receiving slot being located between the second and third dielectric blocks.

10. The terminal module of claim 7, wherein the first locating block is in interference fit with the first receiving groove and/or the first base is in interference fit with the third receiving groove.

11. An electrical connector comprising a plastic body and the terminal module of any one of claims 1 to 10, wherein the terminal module is assembled to the plastic body.