CN111129837B

CN111129837B - Terminal module, electric connector and electric connector assembly

Info

Publication number: CN111129837B
Application number: CN201811279860.8A
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: 2021-06-18
Anticipated expiration: 2038-10-30
Also published as: CN111129837A

Abstract

The application provides a terminal module, an electric connector and an electric connector assembly. The terminal module includes a first terminal module and a second terminal module assembled together, the first terminal module includes a signal terminal and a first body and a second body integrally formed to the signal terminal, the second terminal module comprises a plurality of grounding terminal bodies and a plurality of shielding sheets which are arranged at intervals, a first insulating block integrally formed to the grounding terminal bodies and a second insulating block integrally formed to the shielding sheets, the second body comprises a second base and a second positioning block extending from the second base, the second positioning block is positioned between the adjacent pair of the first insulation blocks, the second insulating block is positioned between the first body and the second body, so that the first terminal module and the second terminal module are limited in multiple directions, and the first terminal module is prevented from moving relative to the second terminal module.

Description

Terminal module, electric connector and electric connector assembly

Technical Field

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

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 terminals of the high-density electrical connector are numerous, 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 small. The related electric connector comprises a plastic body and a plurality of terminal modules assembled to the plastic body. The terminal module comprises a first module and a second module which are assembled together. There is the not good phenomenon of spacing effect between first module and the second module, leads to first module and second module are in the problem that this internal rocking of plastic.

Disclosure of Invention

The application provides a terminal module, an electric connector and an electric connector assembly, wherein a better limiting effect is achieved between a first terminal module and a second terminal module.

One aspect of the present application provides a terminal module, including first terminal module and the second terminal module of equipment together, first terminal module includes signal terminal and integrated into one piece extremely the first body and the second body of signal terminal, the second terminal module includes a plurality of ground terminal bodies and a plurality of shielding piece, integrated into one piece extremely that the interval set up the first insulating block and the integrated into one piece extremely of ground terminal body the second insulating block of shielding piece, the second body includes the second basal portion and certainly the second locating piece that the second basal portion extends, the second locating piece is located adjacent a pair of between the first insulating block, the second insulating block is located first body with between the second body.

Further, the terminal module includes a plurality of the first terminal modules assembled to the first terminal module, the first insulating block includes a third receiving groove, and the second base is at least partially received to the third receiving groove.

Further, the first terminal module comprises a plurality of signal terminals, the first body and the second body are integrally formed to the plurality of signal terminals, the first insulating block comprises a bottom, a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion extend from the bottom, the first body comprises a first base portion and a first positioning block, the first positioning block extends from the first base portion, the first base portion is located between the first limiting portion and the second limiting portion, and the first positioning block is located between a pair of adjacent first insulating blocks.

Further, the ground terminal body includes a first upper contact portion, a first lower contact portion, and a second fixing portion connecting the first upper contact portion and the first lower contact portion, the shielding plate includes a second connecting portion extending from the second fixing portion, a first shielding portion extending from the second connecting portion, and a second shielding portion extending from the first shielding portion, and the first shielding portion and a pair of the second connecting portions located at opposite ends of the first shielding portion enclose a recessed portion.

Further, the signal terminal includes a first contact 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 disposed opposite to each other, and the third side is perpendicular to the first side.

Further, a plurality of the ground terminal body is located same row, and is a plurality of first shielding part is located same row, ground terminal body with first shielding part and second shielding part parallel arrangement.

Another aspect of the present application provides an electrical connector, including the plastic body and the above-mentioned terminal module, the terminal module assemble to the plastic body.

Furthermore, the plastic body comprises a plurality of positioning holes, and the terminal module comprises a buckle assembled to the positioning holes and buckled with the plastic body.

Yet another aspect of the present application provides an electrical connector assembly, including the above-mentioned electrical connector and with electrical connector complex interworked electrical connector, interworked electrical connector includes the fourth body and assembles extremely the interworked signal terminal and the interworked ground terminal subassembly of the fourth body, interworked signal terminal with signal terminal electric contact, interworked ground terminal subassembly with ground terminal body electric contact.

Further, the inter-mating ground terminal assembly includes a pair of inter-mating ground terminal bodies, a pair of connecting portions extending from the pair of inter-mating ground terminal bodies, and a shielding portion connecting the pair of connecting portions, the adjacent pair of inter-mating ground terminal bodies are located on a first side and a second side of the inter-mating signal terminal, the shielding portion is located on a third side of the inter-mating signal terminal, the first side and the second side are disposed opposite to each other, and the third side is perpendicular to the first side.

The second locating piece of the first terminal module of this application terminal module is located adjacent a pair of the second terminal module between the first insulating block, the second insulating block of second terminal module is located between the first body of first terminal module and the second body, makes first terminal module with it is spacing to have a plurality of directions between the second terminal module, prevents that first terminal module is relative the removal of second terminal module.

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 fourth body a 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 inter-mating ground terminal assembly 11 includes a plurality of ground terminal bodies 21110 and a plurality of shield 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.

Referring to fig. 7, the plurality of ground terminal bodies 21110 are connected together by the first shield 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.

Referring to fig. 3, 4 and 6, the first body 2101 and the second body 2103 are fixedly positioned to the third body 2110 by way of 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 body 21110 and the first contact portion 21021 of the signal terminal 2102 are received in the terminal hole 2010 of the plastic body 20.

Referring to fig. 4, 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. Referring to fig. 11 and 14, the mating 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. Referring to fig. 13, 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 the present 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. Referring to fig. 10, the rib 1030 extends from the second end 1032 to the first end 1031 and is connected to the bottom wall 101, but the present application is not limited thereto. 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. 14, a plurality of the inter-fitting ground terminal bodies 110 are connected together by a plurality of the shielding portions 114, which facilitates manufacturing. 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, i.e., 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 module 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 assembly 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 mating ground terminal main bodies 110 are located on the first side and the second side of the mating signal terminal 121, the shielding portion 114 is located on the third side of the mating signal terminal 121, the first side and the second side are opposite to each other, and the third side is 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 electrical mating connector 1, the rib 1030 of the electrical mating connector 1 is assembled into the receiving portion 2032 of the electrical connector 2, so as to ensure that the third contact portion 1210 of the mating signal terminal 121 of the electrical mating connector 1 is aligned with the first contact portion 21021 of the signal terminal 2102 of the electrical connector 2 and electrical connection is achieved, and the second upper contact portion 1102 of the grounding terminal body 110 of the electrical mating connector 1 is aligned with the first upper contact portion 21112 of the grounding terminal body 21110 of the electrical connector 2 and electrical connection is achieved; at the same time, positioning the electrical connector 2 to the mating electrical connector 1 prevents wobbling of the electrical connector 2.

The second positioning blocks 21032, 22121 of the first terminal module 210 of the terminal module 21 are located between the adjacent pair of the first insulating

blocks

21100, 22010 of the second terminal module 211, and the second insulating

blocks

21101, 22011 of the second terminal module 211 are located between the

first body

2101, 2211 and the

second body

2103, 2212 of the first terminal module 210, so that the first terminal module 210 and the second terminal module 211 are limited in multiple directions, and the first terminal module 210 is prevented from moving relative to the second terminal module 211.

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. The terminal module is characterized by comprising a first terminal module and a second terminal module which are assembled together, wherein the first terminal module comprises a signal terminal, a first body and a second body which are integrally formed to the signal terminal, the second terminal module comprises a plurality of grounding terminal bodies and a plurality of shielding sheets which are arranged at intervals, a first insulating block which is integrally formed to the grounding terminal bodies, and a second insulating block which is integrally formed to the shielding sheets, the second body comprises a second base part and a second positioning block which extends from the second base part, the second positioning block is positioned between a pair of adjacent first insulating blocks, and the second insulating block is positioned between the first body and the second body.

2. The terminal module of claim 1, wherein the terminal module includes a plurality of the first terminal modules assembled to the second terminal module, the first insulating block includes a third receiving groove, and the second base is at least partially received into the third receiving groove.

3. The terminal module of claim 1, wherein the first terminal module includes a plurality of signal terminals, the first body and the second body are integrally formed to the plurality of signal terminals, the first insulating block includes a bottom portion, a first position limiting portion and a second position limiting portion extending from the bottom portion, the first body includes a first base portion and a first positioning block extending from the first base portion, the first base portion is located between the first position limiting portion and the second position limiting portion, and the first positioning block is located between an adjacent pair of the first insulating blocks.

4. The terminal module of claim 1, wherein the ground terminal body includes a first upper contact portion, a first lower contact portion, and a second fixing portion connecting the first upper contact portion and the first lower contact portion, the shield plate includes a second connecting portion extending from the second fixing portion, a first shield portion extending from the second connecting portion, and a second shield portion extending from the first shield portion, and the first shield portion and a pair of the second connecting portions at opposite ends of the first shield portion enclose a recess portion.

5. The terminal module of claim 4, wherein the signal terminals include first contact portions, adjacent pairs of the first upper contact portions are located on first and second sides of the first contact portions, the second shielding portion is located on a third side of the first contact portions, the first side is disposed opposite the second side, and the third side is perpendicular to the first side.

6. The terminal module of claim 5, wherein a plurality of the ground terminal bodies are located in a same row, a plurality of the first shielding portions are located in a same row, and the ground terminal bodies are arranged in parallel with the first shielding portions and the second shielding portions.

7. An electrical connector comprising a plastic body and the terminal module of any one of claims 1 to 6, wherein the terminal module is assembled to the plastic body.

8. The electrical connector of claim 7, wherein the plastic body comprises a plurality of positioning holes, and the terminal module comprises a latch assembled to the positioning holes and retained by the plastic body.

9. An electrical connector assembly comprising the electrical connector of claim 7 or 8 and an inter-mating electrical connector mated with the electrical connector, the inter-mating electrical connector comprising a fourth body and inter-mating signal terminals and inter-mating ground terminal assemblies assembled to the fourth body, the inter-mating signal terminals being in electrical contact with the signal terminals and the inter-mating ground terminal assemblies being in electrical contact with the ground terminal bodies.

10. The electrical connector assembly of claim 9, wherein said mating ground terminal assembly includes a pair of mating ground terminal bodies, a pair of connecting portions extending from a pair of said mating ground terminal bodies, respectively, and a shield portion connecting a pair of said connecting portions, adjacent ones of said pair of mating ground terminal bodies being located on a first side and a second side of said mating signal terminals, said shield portion being located on a third side of said mating signal terminals, said first side being disposed opposite said second side, said third side being perpendicular to said first side.