Electrical connector and connector assembly

Abstract

The application discloses an electric connector and a connector assembly. The electric connector comprises an insulating body, a terminal module arranged on the insulating body, the terminal module comprising two pairs of adjacent differential signal terminals and a grounding terminal between the two pairs of differential signal terminals, wherein one pair of differential signal terminals has a first part and a second part, the other pair of differential signal terminals has a third part and a fourth part, the second part and the fourth part each comprise a connecting part and a mating part, the connecting part of the second part and the connecting part of the fourth part are arranged staggered in a first direction, the mating part of the second part and the mating part of the fourth part are located in different rows in a second direction, the grounding terminal has a fifth part, a sixth part and a seventh part, the sixth part and the seventh part are independently arranged, the sixth part and the second part are at least partially side by side in the first direction, the seventh part and the fourth part are at least partially side by side in the first direction, and the sixth part and the seventh part shield at least part of the second part and the fourth part, respectively.

Description

Technical Field

[0001] This invention relates to an electrical connector and connector assembly, and more particularly to an electrical connector and connector assembly for improving high-frequency operation. Background Technology

[0002] Existing electrical connectors include a base and a terminal module housed within the base. The terminal module includes two adjacent pairs of differential signal terminals and a ground terminal located between the two adjacent pairs of differential signal terminals. The ground terminal is used to shield the mutual interference between the signals of the two adjacent pairs of differential signal terminals. The two pairs of differential signal terminals have completely identical structures and are arranged side by side. However, as the transmission frequency required for electrical connectors in the market increases and the spacing between two adjacent terminals decreases, i.e., the distance between two adjacent pairs of differential signal terminals decreases and crosstalk becomes serious, the original design can no longer meet the high-frequency requirements of electrical connectors.

[0003] Therefore, it is necessary to design a new electrical connector and connector assembly to overcome the above problems. Summary of the Invention

[0004] To address the problems of the prior art, the present invention aims to provide a new electrical connector and connector assembly, wherein two adjacent pairs of differential signal terminals are staggered to increase the distance between them, reduce crosstalk, and the two staggered pairs of differential signal terminals are respectively adapted to the same grounding terminal by a bifurcated structure, thereby achieving a shielding effect and improving high-frequency performance.

[0005] To achieve the above objectives, the present invention provides an electrical connector, comprising: a base; at least one terminal module disposed on the base; the terminal module includes two adjacent pairs of differential signal terminals and a ground terminal located between the two adjacent pairs of differential signal terminals, wherein each of one pair of differential signal terminals has a first portion and a second portion connected to the first portion, and each of the other pair of differential signal terminals has a third portion and a fourth portion connected to the third portion, the first portion and the third portion being arranged side by side along a first direction, the second portion and the fourth portion each including a connecting portion and a mating portion, defining a second direction perpendicular to the first direction, wherein in the second direction, the connecting portion of the second portion is closer to the first portion relative to the mating portion, and the fourth portion... The connecting portion of the second part is closer to the docking portion than the third part. The connecting portion of the second part and the connecting portion of the fourth part are offset in a first direction, defining a third direction that is perpendicular to the first and second directions. The docking portion extends along the third direction. The docking portion of the second part and the docking portion of the fourth part are located in different rows along the second direction. The grounding terminal has a fifth part, a sixth part connected to the fifth part, and a seventh part connected to the fifth part. The sixth part and the seventh part are independently separated. The sixth part and the second part are at least partially arranged side by side along the first direction to shield at least a portion of the second part. The seventh part and the fourth part are at least partially arranged side by side along the first direction to shield at least a portion of the fourth part.

[0006] Furthermore, the connecting portion of the second part includes a first curved portion and a first extension portion extending from the first curved portion. The first curved portion is located between the first part and the first extension portion, and the first extension portion is located between the first curved portion and the mating portion of the second part. The first curved portion causes the first extension portion to be offset in a third direction toward a side away from the plane in which the first part and the third part are located.

[0007] Furthermore, the connecting portion of the fourth part includes a second curved portion and a second extension portion extending from the second curved portion. The second curved portion is located between the third part and the second extension portion, and the second extension portion is located between the second curved portion and the mating portion of the fourth part. The second curved portion causes the second extension portion to be offset in a third direction toward the other side away from the plane where the first part and the third part are located.

[0008] Furthermore, the first extension is disposed in a third direction relative to the second extension and close to the docking portion, and the docking portion of the second portion is farther away from the first portion in a second direction than the docking portion of the fourth portion.

[0009] Furthermore, the fourth part also includes a deflection portion connected to the second extension portion and located between the second extension portion and the docking portion of the fourth part, such that the transmission path of the second part and the transmission path of the fourth part are of equal length.

[0010] Furthermore, the system includes a cable assembly comprising multiple cables, each cable including two signal wires and two ground wires. The terminal module includes multiple pairs of differential signal terminals and multiple ground terminals arranged alternately along a first direction. The fifth portion, the first portion, and the third portion expose the base. Two signal wires are soldered to the same pair of differential signal terminals exposed in the first portion or the third portion of the base. The ground wires are soldered to the ground terminals exposed in the fifth portion of the base. The ground terminal between two adjacent pairs of differential signal terminals is soldered to the two ground wires of the two cables.

[0011] Furthermore, the electrical connector includes a plurality of grounding terminals, with one grounding terminal provided on each side of each pair of differential signal terminals. The base has a first groove and a second groove, both of which are recessed inward from the outer surface of the base. The first groove is connected to the second portion of one pair of differential signal terminals and the sixth portion of the two adjacent grounding terminals on both sides. The second groove is connected to the fourth portion of another pair of differential signal terminals and the seventh portion of the two adjacent grounding terminals on both sides.

[0012] Furthermore, the fifth part is arranged side by side with the first part and the third part along the first direction.

[0013] Furthermore, both the sixth part and the seventh part include a guide portion. The guide portion of the sixth part and the mating portion of the second part are aligned and arranged in a first direction. The guide portion of the seventh part and the mating portion of the fourth part are aligned and arranged in a first direction. The width of the guide portion in the first direction is smaller than the width of the mating portion in the first direction.

[0014] Furthermore, the base and the terminal module are injection molded together, with the mating portion exposed above the base.

[0015] Furthermore, the terminal module includes multiple pairs of differential signal terminals and multiple ground terminals arranged alternately along a first direction. The base includes a first body with a first shielding layer and a second body with a second shielding layer. The differential signal terminals are sandwiched between the first body and the second body, and the first shielding layer and the second shielding layer surround the differential signal terminals.

[0016] Furthermore, along the extending direction of the differential signal terminals, the first shielding layer and the second shielding layer surround each pair of differential signal terminals.

[0017] Furthermore, the terminal module includes multiple insulating blocks, each insulating block corresponding to multiple pairs of differential signal terminals and arranged at intervals along a first direction. Each insulating block is embedded in a pair of differential signal terminals. The insulating block is sandwiched between the first body and the second body. Along the extension direction of the differential signal terminals, the first shielding layer and the second shielding layer cover the periphery of the insulating block.

[0018] Furthermore, it includes a cable assembly comprising multiple cables, each cable including two signal lines and at least one ground line, the two signal lines being connected to the same pair of differential signal terminals, and the ground line being connected to the second shielding layer.

[0019] Furthermore, the terminal module is provided in two parts, the base includes two first bodies, the second body is sandwiched between the two first bodies, the first body is provided with a first shielding layer on the side facing the second body, and the second body is provided with a second shielding layer on the side facing each of the first bodies, and the grounding terminal is connected to at least one of the first shielding layer and the second shielding layer.

[0020] Furthermore, the fifth portion of one grounding terminal of one of the terminal modules is integrally connected to the fifth portion of one grounding terminal of the other terminal module.

[0021] Furthermore, the fifth portion of the grounding terminal of the two terminal modules is integrally connected.

[0022] Furthermore, the second shielding layer is exposed on the base on the side corresponding to the docking portion, and the fifth portion is connected to the second shielding layer on the side corresponding to the docking portion.

[0023] Furthermore, the fifth part is welded and fixed to the second shielding layer.

[0024] Furthermore, the first body includes a first insulating substrate and a first shielding layer plated on the first insulating substrate. The first insulating substrate has the first shielding layer at least on the side facing the second body. The second body includes a second insulating substrate and a second shielding layer plated on the second insulating substrate. The second insulating substrate has the second shielding layer at least on the side facing the first body.

[0025] The present invention also provides a connector assembly, comprising: an electrical connector as described above and a mating connector that mates with the electrical connector; the mating connector includes a plastic body and a plurality of mating terminals housed in the plastic body, each of the mating terminals having a contact portion and a solder portion, each of the mating portions contacting one of the contact portions to form an electrical connection, and the contact portions of two of the mating terminals correspondingly contacting the sixth portion and the seventh portion of the grounding terminal to achieve an electrical connection.

[0026] Furthermore, the docking portion extends in the vertical direction, the first extension of the second portion is closer to the first portion than the docking portion, the second extension of the fourth portion is closer to the third portion than the docking portion, the first extension of the second portion is offset downward relative to the first portion, the second extension of the fourth portion is offset upward relative to the third portion, and the docking portion of the second portion is farther away from the first portion in the second direction than the docking portion of the fourth portion.

[0027] Furthermore, the plastic body is provided with a plurality of receiving slots arranged along a first direction, the receiving slots penetrating the plastic body vertically, and each pair of adjacent receiving slots is separated by a partition. A plurality of mating terminals are correspondingly received in the plurality of receiving slots, and the contact portion of the mating terminals is received in the receiving slots. The mating terminal that is mated with the differential signal terminal is defined as the first terminal, and the mating terminal that is mated with the ground terminal is defined as the second terminal. The partition located between two adjacent first terminals is defined as the first partition, and the partition located between adjacent first terminals and second terminals is defined as the second partition. A notch is provided on the second partition, the notch extending upward to the upper surface of the plastic body and connecting the two receiving slots on both sides of the second partition. The bottom of the notch is lower than the first partition. Furthermore, the second sidewall extends rearward to form a first extension plate and a second extension plate, and a limiting groove is formed between the first extension plate and the second extension plate. The base is provided with a first wall portion, two second walls portions and a third wall portion. The two second walls portions are located on the left and right sides of the slot. The second walls portion connects the first wall portion and the third wall portion. The first wall portion and the first sidewall form the docking cavity. The second wall portion protrudes outward to form a first limiting protrusion. The first limiting protrusion is close to the first wall portion and away from the third wall portion. The first limiting protrusion engages with the limiting groove.

[0028] Furthermore, the welded portions of the two mating terminals electrically connected to the same grounding terminal are welded to the same gasket of a circuit board.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] Crosstalk is generated by the mutual coupling between two adjacent pairs of differential signal terminals through mutual capacitance and mutual inductance, and is directly proportional to the mutual capacitance and mutual inductance. The distance between two adjacent pairs of differential signal terminals is inversely proportional to both mutual capacitance and mutual inductance. The magnetic force between two adjacent pairs of differential signal terminals represents the magnitude of the crosstalk. The essence of crosstalk is the energy of this interaction, determined by mutual capacitance and mutual inductance. This invention avoids large-area overlap of adjacent pairs of differential signal terminals along the first direction by staggering the connecting portions of the second and fourth parts in the first direction, and by having the mating portions of one pair of the second parts and the mating portions of the other pair of the fourth parts extend along a third direction and be located in different rows along the second direction. This increases the spacing between adjacent pairs of differential signal terminals and reduces the impact of large-area overlap along the first direction. To prevent crosstalk between the two pairs of differential signal terminals, the sixth and seventh parts of the fifth part connected to the ground terminal are independently set up. The sixth part is arranged side by side with the second part of the differential signal terminal along the first direction to shield the second part. The seventh part is arranged side by side with the fourth part of the differential signal terminal along the first direction to shield the fourth part. This allows one ground terminal to shield two adjacent pairs of differential signal terminals, reducing the space required for an additional ground terminal. Furthermore, the ground terminal can absorb the electromagnetic radiation generated by the two adjacent pairs of differential signal terminals, thereby suppressing the mutual capacitance and mutual inductance of the two adjacent pairs of differential signal terminals and reducing crosstalk. Thus, this invention makes full use of limited space to meet the high-frequency requirements of the electrical connector. Attached Figure Description

[0031] Figure 1 This is a perspective view of the electrical connector and the mating connector before they are mated in the first embodiment of the connector assembly of the present invention;

[0032] Figure 2 for Figure 1 Partial exploded view of an electrical connector;

[0033] Figure 3 for Figure 1 Top view of the electrical connector;

[0034] Figure 4 for Figure 1 A side view of the CEC connector when it is mated with the mating connector, with the base and plastic body hidden.

[0035] Figure 5 for Figure 1 A front view of the CEC connector when it is mated with the docking connector, with its base and plastic body hidden.

[0036] Figure 6 for Figure 1 Top view of the mating connector;

[0037] Figure 7 for Figure 6 A sectional view cut along the AA direction;

[0038] Figure 8 This is a perspective view of the electrical connector and the mating connector before mating, according to a second embodiment of the connector assembly of the present invention.

[0039] Figure 9 for Figure 8 Exploded 3D view of CEC connectors;

[0040] Figure 10 for Figure 8 Top view of the CEC connector;

[0041] Figure 11 for Figure 10 A sectional view cut along the BB direction;

[0042] Figure 12 for Figure 10 A partial sectional view cut along the CC direction;

[0043] Figure 13 for Figure 8 A three-dimensional view of the CEC connector from another perspective;

[0044] Figure 14 for Figure 8 A schematic diagram showing only the terminal arrangement is displayed after the insulating block of the middle terminal module is hidden;

[0045] Figure 15 for Figure 14 A schematic diagram of the terminal arrangement in the middle section;

[0046] Figure 16 for Figure 8 A side view of the CEC connector when it is mated with the mating connector, with the base and plastic body hidden.

[0047] Electrical connector 100 Base 1 First Body 10a First insulating substrate 101 First shielding layer 102 103 ribs Recess 104 Second Body 10b Second insulating substrate 105 Second shielding layer 106 First groove 11 Second groove 12 Terminal Module 2 Differential signal terminal 21 Part 1, page 211 Part Two 212 First bend 2121 First extension 2122 Part 3, page 213 Part 4, page 214 Second bend 2141 Second extension 2142 Deflection part 2143 Connecting part M Dating Section Q Grounding terminal 22 Part 5, 221 Part 6, 222 Part 7 223 Conductor R Insulating block 23 Cable assembly 3 Cable 31 Signal line 311 Grounding wire 312 200 docking connectors Plastic body 4 Containment slot 41 42 partitions First partition 42a Second partition 42b Gap 43 Terminal 5 First terminal 5a Second terminal 5b Contact part 51 Welding part 52 Circuit board 300 Gasket 6 Detailed Implementation

[0048] To facilitate a better understanding of the purpose, structure, and features of this invention, the invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0049] For ease of understanding, this invention defines a first direction (X-axis), a second direction (Y-axis), and a third direction (Z-axis), and these three directions are perpendicular to each other. In this invention, the third direction is the up-down direction, but the third direction is not limited to the up-down direction. Other directions can be defined according to requirements.

[0050] like Figures 1 to 7As shown, this is a first embodiment of the connector assembly of the present invention. The connector assembly includes an electrical connector 100 and a mating connector 200. The mating connector 200 is mounted on a circuit board 300, and the electrical connector 100 is a wire-end connector.

[0051] like Figure 1 and Figure 2 The diagram shows a first embodiment of the electrical connector 100 of the present invention, namely the electrical connector 100 in the first embodiment of the connector assembly described above. The electrical connector 100 includes a base 1, a terminal module 2 disposed on the base 1, and a cable assembly 3 soldered to the terminal module 2. In other embodiments, only two or more terminal modules 2 and two or more cable assemblies 3 may be provided.

[0052] like Figure 1 , Figure 2 and Figure 4 As shown, the terminal module 2 includes multiple pairs of differential signal terminals 21 and multiple ground terminals 22. The multiple pairs of differential signal terminals 21 and multiple ground terminals 22 are arranged alternately along a first direction. Each pair of differential signal terminals 21 has a ground terminal 22 on each of its opposite sides. For two adjacent pairs of differential signal terminals 21 on opposite sides of a ground terminal 22, each of one pair of differential signal terminals 21 is defined to have a first part 211 and a second part 212 connected to the first part 211. Each of the other pair of differential signal terminals 21 has a third part 213 and a fourth part 214 connected to the third part 213. Each ground terminal 22 located in two adjacent pairs of differential signal terminals 21 has a fifth part 221, a sixth part 222 connected to the fifth part 221, and a seventh part 223 connected to the fifth part 221. The sixth part 222 and the seventh part 223 are independently and separately arranged.

[0053] like Figure 1 and Figure 2 As shown, the first portion 211 and the third portion 213 are arranged side by side with the fifth portion 221 of the grounding terminal 22 along the first direction. The first portion 211 and the third portion 213 are both flat and extend along the second direction. The sixth portion 222 is arranged side by side with the second portion 212 along the first direction to shield the second portion 212. The seventh portion 223 is arranged side by side with the fourth portion 214 along the first direction to shield the fourth portion 214.

[0054] like Figure 2As shown, both the second part 212 and the fourth part 214 include a connecting portion M and a mating portion Q. Along the second direction, the connecting portion M of the second part 212 is closer to the first part 211 than the mating portion Q, and the connecting portion M of the fourth part 214 is closer to the third part 213 than the mating portion Q. The connecting portion M of the second part 212 and the connecting portion M of the fourth part 214 are offset in the first direction, and the mating portion Q of the second part 212 and the mating portion Q of the fourth part 214 are located in different rows along the second direction.

[0055] like Figure 2 As shown, the connecting portion M of the second part 212 includes a first curved portion 2121 and a first extension portion 2122 extending from the first curved portion 2121. The first curved portion 2121 is located between the first part 211 and the first extension portion 2122. The first extension portion 2122 is located between the first curved portion 2121 and the mating portion Q of the second part 212. The first extension portion 2122 is flat and extends along a second direction. The first curved portion 2121 causes the first extension portion 2122 to be offset in a third direction toward a side away from the plane where the first part 211 and the third part 213 are located.

[0056] like Figure 2 As shown, the connecting portion M of the fourth part 214 includes a second curved portion 2141 and a second extension portion 2142 extending from the second curved portion 2141. The second extension portion 2142 is flat and extends along a second direction. The fourth part 214 also includes a deflection portion 2143, which connects to the second extension portion 2142. The second curved portion 2141 is located between the third part 213 and the second extension portion 2142, and the second curved portion 2141 causes the second extension portion 2142 to be offset in a third direction away from the plane where the first part 211 and the third part 213 are located. The second extension portion 2142 is located between the second curved portion 2141 and the deflection portion 2143, and the deflection portion 2143 is located between the second extension portion 2142 and the mating portion Q of the fourth part 214, such that the transmission path of the second part 212 and the transmission path of the fourth part 214 are of equal length.

[0057] like Figure 2As shown, in this embodiment, the docking portion Q is flat and extends along a third direction, which is the vertical direction. The first extension portion 2122 is positioned relative to the second extension portion 2142 and closer to the docking portion Q in the third direction. Specifically, in the second direction, the first extension portion 2122 of the second portion 212 is closer to the first portion 211 than the docking portion Q, and the second extension portion 2142 of the fourth portion 214 is closer to the third portion 213 than the docking portion Q. The first extension portion 2122 of the second portion 212 is offset downwards relative to the first portion 211, and the second extension portion 2142 of the fourth portion 214 is offset upwards relative to the third portion 213. In other embodiments, the docking portion Q may also extend along the second direction. The docking portion Q of the second portion 212 is farther away from the first portion 211 in the second direction than the docking portion Q of the fourth portion 214.

[0058] like Figures 2 to 4 As shown, both the sixth part 222 and the seventh part 223 include a guide portion R. The guide portion R of the sixth part 222 is aligned with the mating portion Q of the second part 212 along a first direction. The guide portion R of the seventh part 223 is aligned with the mating portion Q of the fourth part 214 along a first direction. The width of the guide portion R in the first direction is smaller than the width of the mating portion Q in the first direction.

[0059] like Figure 2 As shown, the first portion 211, the third portion 213, and the fifth portion 221 are all exposed on the same side of the base 1 in a third-party orientation and are welded to the cable assembly 3. The cable assembly 3 includes multiple cables 31, each cable 31 including two signal lines 311 and two ground lines 312. The two signal lines 311 are welded to the same pair of differential signal terminals 21 exposed in the first portion 211 or the third portion 213 of the base 1. The ground lines 312 are welded to the ground terminals 22 exposed in the fifth portion 221 of the base 1, and the ground terminals 22 between two adjacent pairs of differential signal terminals 21 are welded to the two ground lines 312 of the two cables 31.

[0060] like Figure 1As shown, the base 1 and the terminal module 2 are injection molded. The mating portion Q and the conductive portion R both protrude from the base 224 in a third-direction upward direction, that is, the mating portion Q and the conductive portion R protrude downward from the lower surface of the base 1. The base 1 has multiple first grooves 11 and multiple second grooves 12. Both the first grooves 11 and the second grooves 12 are recessed inward from the outer surface of the base 1. The first grooves 11 connect to the second portion 212 of one pair of adjacent differential signal terminals 21 and the sixth portion 222 of the two adjacent ground terminals 22 on both sides. The second grooves 12 connect to the fourth portion 214 of the other pair of adjacent differential signal terminals 21 and the seventh portion 223 of the two adjacent ground terminals 22 on both sides (e.g., ...). Figure 3 (As shown). The number of the first groove 11 and the number of the second groove 12 are determined according to the logarithm of the differential signal terminals 21, or only one of each can be provided. The first groove 11 and the second groove 12 not only provide space for the positioning pins (not shown) of the mold (not shown) for injection molding the base 1 on the terminal module 2, but also adjust the dielectric constant around the differential signal terminals 21, change the capacitance in the characteristic impedance, thereby improving the high-frequency performance of the electrical connector 100.

[0061] like Figure 6 As shown, the mating connector 200 includes a plastic body 4 and a plurality of mating terminals 5 housed in the plastic body 4.

[0062] like Figure 6 and Figure 7 As shown, the plastic body 4 has a plurality of receiving slots 41 arranged along a first direction. The receiving slots 41 extend vertically through the plastic body 4. A partition 42 is provided between each pair of adjacent receiving slots 41 to separate them. The plurality of docking terminals 5 are correspondingly received in the plurality of receiving slots 41. The docking terminal 5 that docks with the differential signal terminal 21 is defined as the first terminal 5a, and the docking terminal 5 that docks with the ground terminal 22 is defined as the second terminal 5b. The partition 42 located between two adjacent first terminals 5a is defined as the first partition 42a, and the partition 42 located between adjacent first terminals 5a and second terminals 5b is defined as the second partition 42b. The second partition 42b has a notch 43 that extends upward to the upper surface of the plastic body 4 and connects the two adjacent receiving slots 41 on both sides of the second partition 42b. The bottom of the notch 43 is lower than the first partition 42a.

[0063] like Figure 4 and Figure 7As shown, each of the mating terminals 5 has two contact portions 51 and a welding portion 52. The two contact portions 51 are arranged opposite each other in the second direction and are arranged at different heights in the third direction (i.e., the vertical direction). The contact portions 51 of the mating terminal 5 are received in the corresponding receiving groove 41. Each mating portion Q contacts one of the contact portions 51 of the mating terminal 5 to form an electrical connection, and the two contact portions 51 of the mating terminal 5 are clamped on opposite sides of the corresponding mating portion Q in the second direction. The contact portions 51 of the two mating terminals 5 are in one-to-one contact with the two conductive portions R of the same grounding terminal 22, thereby realizing an electrical connection. That is, the two contact portions 51 of one mating terminal 5 are clamped on opposite sides of one of the conductive portions R of the grounding terminal 22 in the second direction, and the two contact portions 51 of the other mating terminal 5 are clamped on opposite sides of the other conductive portion R of the grounding terminal 22 in the second direction. In other embodiments, each mating terminal 5 may be provided with only one contact portion 51 as required.

[0064] like Figure 5 As shown, the circuit board 300 has a plurality of pads 6, which are welded to the soldering portions 52 of a plurality of mating terminals 5. The soldering portion 52 of each first terminal 5a is correspondingly welded to one pad 6, and the soldering portions 52 of two adjacent second terminals 5b are correspondingly welded to one pad 6. That is, the soldering portions 52 of two second terminals 5b electrically connected to the same grounding terminal 22 are welded to the same pad 6 of the circuit board 300.

[0065] like Figures 8 to 16 As shown, this is a second embodiment of the connector assembly of the present invention. The connector assembly includes an electrical connector 100 and a mating connector 200. The mating connector 200 is mounted on a circuit board 300, and the electrical connector 100 is a wire-end connector.

[0066] like Figure 8 and Figure 9 The diagram shows a second embodiment of the electrical connector 100 of the present invention, namely the electrical connector 100 in the second embodiment of the connector assembly described above. The electrical connector 100 includes a base 1, two terminal modules 2 disposed on the base 1, and two cable assemblies 3 respectively soldered to the two terminal modules 2. In other embodiments, only one terminal module 2 and one cable assembly 3 may be provided.

[0067] like Figure 9 and Figure 11As shown, the base 1 includes two first bodies 10a and one second body 10b, with the second body 10b sandwiched between the two first bodies 10a. In this embodiment, the number of first bodies 10a is the same as the number of terminal modules 2. Each first body 10a includes a first insulating substrate 101 and a first shielding layer 102 disposed on the outer surface of the first insulating substrate 101. Each first body 10a also has a plurality of spacers 103 spaced apart along a first direction. A recess 104 is formed between every two adjacent spacers 103. In this embodiment, the recess 104 is formed by recessing from the outer surface of the first body 10a at the position corresponding to the first shielding layer 102, that is, the surface of the spacers 103 and the surface of the recess 104 are both the first shielding layer 102. The second body 10b includes a second insulating substrate 105 and a second shielding layer 106 disposed on the outer surface of the second insulating substrate 105. Both the first shielding layer 102 and the second shielding layer 106 are metal plating layers. The first shielding layer 102 is plated onto the first insulating substrate 101, and the second shielding layer 106 is plated onto the second insulating substrate 105 by electroplating. In other embodiments, the first shielding layer 102 and the second shielding layer 106 can be metal sheets, metal films, or conductive plastics, as long as they have the function of shielding signal terminals. They can be disposed on the first insulating substrate 101 and the second insulating substrate 105 by assembly, embedding, brush plating, coating, or other methods.

[0068] like Figure 9 , Figure 11 and Figure 12As shown, the second body 10b is sandwiched between the two first bodies 10a. In this embodiment, the first shielding layer 102 is disposed on the outer surface of the first insulating substrate 101. The first insulating substrate 101 has the first shielding layer 102 on at least one side facing the second body 10b. The second shielding layer 106 is disposed on the outer surface of the second insulating substrate 105. The second insulating substrate 105 has the second shielding layer 106 on at least one side facing the first body 10a. In this embodiment, the first shielding layer 102 is also disposed on the first insulating substrate 101 corresponding to... On the outer surface of one side of the docking connector 200, the second shielding layer 106 is also provided on the outer surface of the second insulating substrate 105 corresponding to the side of the docking connector 200. Thus, the second body 10b has the second shielding layer 106 on the side facing each of the first bodies 10a. Each first shielding layer 102 and the second shielding layer 106 is used to shield one of the terminal modules 2. The first body 10a and the second body 10b can be bonded together with conductive adhesive, that is, the first shielding layer 102 and the corresponding second shielding layer 106 are bonded together with conductive adhesive. In other embodiments, the second body 10b may also have the second shielding layer 106 only on the side facing each of the first bodies 10a. The first body 10a and the second body 10b can also be fixed together by mechanical means, for example, by interference through the interlocking of the concave and convex structures on the body, or by mechanically connecting the two together through a third element.

[0069] like Figure 9 and Figure 14 As shown, each terminal module 2 includes multiple pairs of differential signal terminals 21, multiple ground terminals 22, and multiple insulating blocks 23. The multiple pairs of differential signal terminals 21 and the multiple ground terminals 22 are arranged alternately along a first direction, wherein a ground terminal 22 is provided on each side of each pair of differential signal terminals 21. For two adjacent pairs of differential signal terminals 21 on opposite sides of a ground terminal 22, each of one pair of differential signal terminals 21 is defined to have a first part 211 and a second part 212 connected to the first part 211, and each of the other pair of differential signal terminals 21 has a third part 213 and a fourth part 214 connected to the third part 213. Each ground terminal 22 located in two adjacent pairs of differential signal terminals 21 has a fifth part 221, a sixth part 222 connected to the fifth part 221, and a seventh part 223 connected to the fifth part 221. The sixth part 222 and the seventh part 223 are independently and separately provided.

[0070] like Figure 14 and Figure 16 As shown, the first portion 211 and the third portion 213 are arranged side by side along a first direction. The first portion 211 and the third portion 213 are located in different rows from the fifth portion 221 in a third direction. The multiple fifth portions 221 of the multiple grounding terminals 22 are spaced apart in the first direction. In other embodiments, the two fifth portions 221 of two adjacent grounding terminals 22 can be connected as one unit. The first portion 211 and the third portion 213 are both flat and extend along a second direction. The sixth portion 222 and the second portion 212 are at least partially arranged side by side along the first direction to shield the portion of the second portion 212 that overlaps with the vertical extension of the sixth portion 222 in the first direction. The seventh portion 223 and the fourth portion 214 are at least partially arranged side by side along the first direction to shield the portion of the fourth portion 214 that overlaps with the seventh portion 223 in the first direction.

[0071] like Figure 15 and Figure 16 As shown, both the second part 212 and the fourth part 214 include a connecting portion M and a mating portion Q. Along the second direction, the connecting portion M of the second part 212 is closer to the first part 211 than the mating portion Q, and the connecting portion M of the fourth part 214 is closer to the third part 213 than the mating portion Q. The connecting portion M of the second part 212 and the connecting portion M of the fourth part 214 are offset in the first direction, and the mating portion Q of the second part 212 and the mating portion Q of the fourth part 214 are located in different rows in the second direction.

[0072] like Figure 15 and Figure 16 As shown, the connecting portion M of the second part 212 includes a first curved portion 2121 and a first extension portion 2122 extending from the first curved portion 2121. The first curved portion 2121 is located between the first part 211 and the first extension portion 2122. The first extension portion 2122 is located between the first curved portion 2121 and the mating portion Q of the second part 212. The first extension portion 2122 is flat and extends along a second direction. The first curved portion 2121 causes the first extension portion 2122 to be offset in a third direction toward a side away from the plane where the first part 211 and the third part 213 are located.

[0073] like Figure 15 and Figure 16As shown, the connecting portion M of the fourth part 214 includes a second curved portion 2141 and a second extension portion 2142 extending from the second curved portion 2141. The second extension portion 2142 is flat and extends along a second direction. The fourth part 214 also includes a deflection portion 2143 connecting the second extension portion 2142 and the mating portion Q of the fourth part 214. The second curved portion 2141 is located between the third part 213 and the second extension portion 2142. The second curved portion 2141 causes the second extension portion 2142 to be offset in a third direction away from the plane where the first part 211 and the third part 213 are located. The second extension portion 2142 is located between the second curved portion 2141 and the deflection portion 2143. The deflection portion 2143 is located between the second extension portion 2142 and the mating portion Q of the fourth part 214, such that the transmission path of the second part 212 and the transmission path of the fourth part 214 are of equal length.

[0074] like Figure 15 and Figure 16 As shown, in this embodiment, the docking portion Q is flat and extends along a third direction, which is the vertical direction. The first extension portion 2122 is positioned relative to the second extension portion 2142 and closer to the docking portion Q in the third direction. Specifically, in the second direction, the first extension portion 2122 of the second portion 212 is closer to the first portion 211 than the docking portion Q, and the second extension portion 2142 of the fourth portion 214 is closer to the third portion 213 than the docking portion Q. The first extension portion 2122 of the second portion 212 is offset downwards relative to the first portion 211, and the second extension portion 2142 of the fourth portion 214 is offset upwards relative to the third portion 213. In other embodiments, the docking portion Q may also extend along the second direction. The docking portion Q of the second portion 212 is farther away from the first portion 211 in the second direction than the docking portion Q of the fourth portion 214.

[0075] like Figure 12 , Figure 15 and Figure 16As shown, both the sixth part 222 and the seventh part 223 include a guide portion R. The guide portion R of the sixth part 222 is located on the portion of the sixth part 222 extending along a third direction, and the guide portion R of the seventh part 223 is located on the portion of the seventh part 223 extending along a third direction. The guide portion R of the sixth part 222 and the mating portion Q of the second part 212 are aligned and arranged along a first direction. The guide portion R of the seventh part 223 and the mating portion Q of the fourth part 214 are aligned and arranged along a first direction. The width of the guide portion R in the first direction is smaller than the width of the mating portion Q in the first direction. Both the mating portion Q and the guide portion R expose the base 1 in a third direction, that is, the mating portion Q and the guide portion R expose the lower surface of the base 1 downwards.

[0076] like Figure 9 and Figure 12 As shown, multiple insulating blocks 23 correspond to multiple pairs of differential signal terminals 21 and are arranged at intervals along a first direction. Each insulating block 23 is embedded in a pair of differential signal terminals 21, and each insulating block 23 is assembled into a recess 104. The multiple insulating blocks 23 are sandwiched between the first body 10a and the second body 10b. Along the extending direction of the differential signal terminals 21, each insulating block 23 covers the periphery of the corresponding pair of differential signal terminals 21. The first shielding layer 102 and the second shielding layer 106 cover the periphery of the insulating block 23.

[0077] like Figure 8 , Figure 9 and Figure 13 As shown, the first portion 211 and the third portion 213 of the same terminal module 2 are exposed on the same side of the base 1 in a third-party direction and are soldered to one of the cable assemblies 3. The first portion 211 and the third portion 213 of two terminal modules 2 are exposed on opposite sides of the base 1 in a third-party direction. Each cable assembly 3 includes multiple cables 31, and each cable 31 includes two signal lines 311 and two ground lines 312. The two signal lines 311 are soldered to the same pair of differential signal terminals 21 one by one. The two ground lines 312 are connected to the second shielding layer 106. The grounding terminal 2 is connected to the first shielding layer 102 and the second shielding layer 106. In this embodiment, the connection between the grounding line 312 and the second shielding layer 106, and the connection between the grounding terminal 2 and the first shielding layer 102 and the second shielding layer 106 (e.g., ...) Figure 11As shown, all electrical connections are formed by welding. In other embodiments, each cable 31 may include only one grounding wire 312, or other numbers of grounding wires 312. The grounding wire 312 may also be connected to the first shielding layer 102. The grounding terminal 2 may be connected to only one of the first shielding layer 102 and the second shielding layer 106, or the electrical connection may be formed by mechanical contact, or by crimping and fixing, etc.

[0078] like Figure 11 , Figure 12 and Figure 13 As shown, the second shielding layer 106 is exposed on the base 1 on the side corresponding to the mating portion Q, and the fifth portion 221 is conductively connected to the second shielding layer 106 on the side corresponding to the mating portion Q. In this embodiment, the fifth portion 221 and the second shielding layer 106 are fixed by welding. In other embodiments, the fifth portion 221 and the second shielding layer 106 can also be fixed by other methods, such as crimping.

[0079] like Figure 9 and Figure 11 As shown, both the cable assembly 3 and the terminal module 2 are provided in pairs. The fifth portion 221 of one grounding terminal 22 of one terminal module 2 is integrally connected to the fifth portion 221 of one grounding terminal 22 of the other terminal module 2. In this embodiment, the two grounding terminals 22 of the two terminal modules 2 that are directly opposite each other are integrally connected. In other embodiments, the fifth portions 221 of all the grounding terminals 22 of the two terminal modules 2 are integrally connected, or the fifth portions 221 of the grounding terminals 22 of the two terminal modules 2 do not necessarily have to be integrally connected; they can be separately provided.

[0080] like Figure 8 and Figure 16 As shown, the mating connector 200 includes a plastic body 4 and a plurality of mating terminals 5 housed in the plastic body 4.

[0081] like Figure 8 and Figure 16 As shown, the plastic body 4 is provided with a plurality of receiving slots 41, which are arranged in two rows along the second direction. The receiving slots 41 penetrate the plastic body 4 vertically. For the same row of receiving slots 41, a partition 42 is provided between each two adjacent receiving slots 41 to separate them. The plurality of docking terminals 5 are correspondingly received in the plurality of receiving slots 41.

[0082] like Figure 8 and Figure 16As shown, each of the mating terminals 5 has two contact portions 51 and a welding portion 52. The two contact portions 51 are arranged opposite each other in a second direction. The contact portions 51 of the mating terminals 5 are received in the corresponding receiving groove 41. Each mating portion Q contacts one of the contact portions 51 of the mating terminals 5 to form an electrical connection. The two contact portions 51 of the mating terminals 5 are clamped on opposite sides of the corresponding mating portion Q in a second direction. The contact portions 51 of the two mating terminals 5 are in one-to-one contact with the two conductive portions R of the same grounding terminal 22, thereby realizing an electrical connection. That is, the two contact portions 51 of one mating terminal 5 are clamped on opposite sides of one conductive portion R of the grounding terminal 22 in a second direction, and the two contact portions 51 of the other mating terminal 5 are clamped on opposite sides of the other conductive portion R of the grounding terminal 22 in a second direction. In other embodiments, each mating terminal 5 may be provided with only one contact portion 51 as required.

[0083] like Figure 16 As shown, the circuit board 300 has a plurality of pads 6, and the plurality of pads 6 are welded to the welding portions 52 of the plurality of mating terminals 5.

[0084] The electrical connector and connector assembly of the present invention also have the following beneficial effects:

[0085] 1. By staggering the first extension 2122 of one pair of adjacent differential signal terminals 21 with the second extension 2142 of the other pair in a first direction, and by having the mating portion Q of the second portion 212 of one pair and the mating portion Q of the fourth portion 214 of the other pair extend along a third direction and be located in different rows along a second direction, large-area overlap of adjacent pairs of differential signal terminals 21 along the first direction is avoided, thereby increasing the spacing between adjacent pairs of differential signal terminals 21 and reducing crosstalk between adjacent pairs of differential signal terminals 21. Furthermore, the sixth portion 222 and the seventh portion 223 of the fifth portion 221 connecting the ground terminal 22 are independently separated, and the sixth portion 222 is connected to the phase... The second portion 212 of one of the adjacent pairs of differential signal terminals 21 is arranged side by side along the first direction to shield the second portion 212. The seventh portion 223 and the fourth portion 214 of the adjacent other pair of differential signal terminals 21 are arranged side by side along the first direction to shield the fourth portion 214. This allows one ground terminal 22 to shield two adjacent pairs of differential signal terminals 21 respectively, reducing the space required for setting an additional ground terminal. Moreover, the ground terminal 22 can absorb the electromagnetic radiation generated by the two adjacent pairs of differential signal terminals 21, thereby suppressing the mutual capacitance and mutual inductance of the two adjacent pairs of differential signal terminals 21 and reducing crosstalk. Thus, the present invention makes full use of limited space to meet the high-frequency requirements of the electrical connector 100.

[0086] 2. By arranging the mating portion 16 of the second part 212 and the mating portion 16 of the fourth part 214 in different rows along a second direction on the electrical connector 100, in the second direction, the side of the second extension 2142 away from the first part 211 is disposed close to the first part 211 relative to the side of the first extension 2122 away from the first part 211, and the fourth part 214 is provided with a deflection portion 2143, the deflection portion 2143 connects the second extension 2142 and the mating portion Q of the fourth part 214 and is located between the two, so that the transmission path of the second part 212 and the transmission path of the fourth part 214 are of equal length, thereby reducing the delay difference between pairs in the differential signal terminals.

[0087] 3. By soldering the solder portions 52 of the two second terminals 5b electrically connected to the grounding terminal 22 to the same pad 6, unnecessary pads 6 are reduced on the circuit board 300.

[0088] 4. By hollowing out the base 1 to form a plurality of first grooves 11 and a plurality of second grooves 12 that are partially connected to the differential signal terminal 21 and the ground terminal 22, the first grooves 11 and the second grooves 12 not only provide space for the positioning pins (not shown) of the mold (not shown) for injection molding the base 1 on the terminal module 2, but also adjust the dielectric constant around the differential signal terminal 21 and change the capacitance in the characteristic impedance, thereby improving the high-frequency performance of the electrical connector 100.

[0089] 5. The first part 211 and the third part 213 are arranged side by side with the fifth part 221 of the grounding terminal 22 along the first direction. The first part 211, the third part 213 and the fifth part 221 all expose the same side of the base 1 in the third direction, which facilitates corresponding welding with the multiple cables 31 of the cable assembly 3.

[0090] 6. By splitting the base 1 into a first body 10a with the first shielding layer 102 and a second body 10b with the second shielding layer 106, the differential signal terminal 21 is sandwiched between the first body 10a and the second body 10b, so that the first shielding layer 102 and the second shielding layer 106 surround the differential signal terminal 21, thereby shielding the differential signal terminal 21 and preventing signal interference.

[0091] 7. Along the extending direction of the differential signal terminals 21, the first shielding layer 102 and the second shielding layer 106 are arranged around each pair of differential signal terminals 21, that is, each pair of differential signal terminals is covered by a shielding layer, so that there will be no signal interference between each pair of adjacent differential signal terminals 21. For a pair of differential signal terminals 21, the shielding effect is better than the shielding effect of non-four-sided coverage in the first embodiment.

[0092] 8. The grounding wire 312 is connected to the second shielding layer 106, so that the grounding wire 312 can achieve rapid grounding without contacting the grounding terminal 22.

[0093] 9. The second shielding layer 106 is exposed on the base 1 on the side corresponding to the docking part Q, so that signal interference in the third direction can be shielded. The fifth part 221 is connected to the second shielding layer 216 on the side corresponding to the docking part Q, which can reduce the material used for the grounding terminal 22.

[0094] 10. The fifth portion 221 of one grounding terminal 22 of one terminal module 2 is integrally connected with the fifth portion 221 of one grounding terminal 22 of another terminal module 2, which simplifies the molding process of the grounding terminal 22; the integral connection of the fifth portions 221 of the grounding terminals 22 of two terminal modules 2 further simplifies the molding process of the grounding terminal 22, so that all the grounding terminals 22 of the two terminal modules 2 can be molded at one time.

[0095] The above detailed description is only an illustration of a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. An electrical connector, characterized in that, include: A base; At least one terminal module is disposed on the base; The terminal module includes two adjacent pairs of differential signal terminals and a ground terminal located between the two adjacent pairs of differential signal terminals. Each of one pair of differential signal terminals has a first portion and a second portion connected to the first portion. Each of the other pair of differential signal terminals has a third portion and a fourth portion connected to the third portion. The first portion and the third portion are arranged side by side along a first direction. The second portion and the fourth portion each include a connecting portion and a mating portion. A second direction is defined, which is perpendicular to the first direction. In the second direction, the connecting portion of the second portion is closer to the first portion relative to the mating portion, and the connecting portion of the fourth portion is closer to the third portion relative to the mating portion. The connecting portion of the second part and the connecting portion of the fourth part are staggered in a first direction, defining a third direction that is perpendicular to the first and second directions. The mating portion extends along the third direction. The mating portion of the second part and the mating portion of the fourth part are located in different rows along the second direction. The grounding terminal has a fifth part, a sixth part connected to the fifth part, and a seventh part connected to the fifth part. The sixth part and the seventh part are independently separated. The sixth part and the second part are at least partially arranged side by side along the first direction to shield at least a portion of the second part. The seventh part and the fourth part are at least partially arranged side by side along the first direction to shield at least a portion of the fourth part.

2. The electrical connector according to claim 1, characterized in that: The connecting portion of the second part includes a first bend and a first extension extending from the first bend, the first bend being located between the first part and the first extension, the first extension being located between the first bend and the mating portion of the second part, the first bend causing the first extension to be offset in a third direction toward a side away from the plane in which the first part and the third part are located.

3. The electrical connector according to claim 2, characterized in that: The connecting portion of the fourth part includes a second bend and a second extension extending from the second bend, the second bend being located between the third part and the second extension, the second extension being located between the second bend and the mating portion of the fourth part, the second bend causing the second extension to be offset in a third direction toward the other side away from the plane where the first part and the third part are located.

4. The electrical connector according to claim 3, characterized in that: The first extension is disposed in a third direction relative to the second extension and close to the docking portion, and the docking portion of the second portion is farther away from the first portion in a second direction than the docking portion of the fourth portion.

5. The electrical connector according to claim 4, characterized in that: The fourth part further includes a deflection portion connected to the second extension portion and located between the second extension portion and the docking portion of the fourth part, such that the transmission path of the second part and the transmission path of the fourth part are of equal length.

6. The electrical connector according to claim 1, characterized in that: The device further includes a cable assembly comprising multiple cables, each cable including two signal wires and two ground wires. The terminal module includes multiple pairs of differential signal terminals and multiple ground terminals arranged alternately along a first direction. The fifth portion, the first portion, and the third portion expose the base. Two signal wires are soldered to the same pair of differential signal terminals exposed in the first portion or the third portion of the base. The ground wires are soldered to the ground terminals exposed in the fifth portion of the base. The ground terminal between two adjacent pairs of differential signal terminals is soldered to the two ground wires of the two cables.

7. The electrical connector according to claim 1, characterized in that: The electrical connector includes a plurality of grounding terminals, with one grounding terminal provided on each side of each pair of differential signal terminals. The base has a first groove and a second groove, both of which are recessed inward from the outer surface of the base. The first groove is connected to the second portion of one pair of differential signal terminals and the sixth portion of the two adjacent grounding terminals on both sides. The second groove is connected to the fourth portion of another pair of differential signal terminals and the seventh portion of the two adjacent grounding terminals on both sides.

8. The electrical connector according to claim 1, characterized in that: The fifth part is arranged side by side with the first part and the third part along the first direction.

9. The electrical connector according to claim 1, characterized in that: Both the sixth and seventh parts include a guide portion. The guide portion of the sixth part and the docking portion of the second part are aligned and arranged in a first direction. The guide portion of the seventh part and the docking portion of the fourth part are aligned and arranged in a first direction. The width of the guide portion in the first direction is smaller than the width of the docking portion in the first direction.

10. The electrical connector according to claim 1, characterized in that: The base and the terminal module are injection molded together, with the mating portion exposed above the base.

11. The electrical connector according to claim 1, characterized in that: The terminal module includes multiple pairs of differential signal terminals and multiple ground terminals arranged alternately along a first direction. The base includes a first body with a first shielding layer and a second body with a second shielding layer. The differential signal terminals are sandwiched between the first body and the second body, and the first shielding layer and the second shielding layer surround the differential signal terminals.

12. The electrical connector according to claim 11, characterized in that: Along the extending direction of the differential signal terminals, the first shielding layer and the second shielding layer surround each pair of differential signal terminals.

13. The electrical connector according to claim 11, characterized in that: The terminal module includes multiple insulating blocks, each insulating block corresponding to multiple pairs of differential signal terminals and arranged at intervals along a first direction. Each insulating block is embedded in a pair of differential signal terminals. The insulating block is sandwiched between the first body and the second body. Along the extension direction of the differential signal terminals, the first shielding layer and the second shielding layer cover the periphery of the insulating block.

14. The electrical connector according to claim 11, characterized in that: It further includes a cable assembly comprising multiple cables, each cable including two signal lines and at least one ground line, the two signal lines being connected to the same pair of differential signal terminals, and the ground line being connected to the second shielding layer.

15. The electrical connector according to claim 11, characterized in that: The terminal module is provided in two parts. The base includes two first bodies and a second body sandwiched between the two first bodies. The first body has a first shielding layer on the side facing the second body, and the second body has a second shielding layer on the side facing each of the first bodies. The grounding terminal is connected to at least one of the first shielding layer and the second shielding layer.

16. The electrical connector according to claim 15, characterized in that: The fifth portion of a grounding terminal of one of the terminal modules is integrally connected to the fifth portion of a grounding terminal of another terminal module.

17. The electrical connector according to claim 15, characterized in that: The fifth portion of all the grounding terminals of the two terminal modules are integrally connected.

18. The electrical connector according to claim 16 or 17, characterized in that: The second shielding layer is exposed on the base on the side corresponding to the docking portion, and the fifth portion is connected to the second shielding layer on the side corresponding to the docking portion.

19. The electrical connector according to claim 15, characterized in that: The fifth part is welded and fixed to the second shielding layer.

20. The electrical connector according to claim 11, characterized in that: The first body includes a first insulating substrate and a first shielding layer plated on the first insulating substrate. The first insulating substrate has the first shielding layer at least on the side facing the second body. The second body includes a second insulating substrate and a second shielding layer plated on the second insulating substrate. The second insulating substrate has the second shielding layer at least on the side facing the first body.

21. A connector assembly, characterized in that, include: The electrical connector as described in claim 1 and a mating connector that mates with the electrical connector; The mating connector includes a plastic body and a plurality of mating terminals housed in the plastic body. Each mating terminal has a contact portion and a solder portion. Each mating portion contacts the contact portion of one of the mating terminals to form an electrical connection. The contact portions of two mating terminals contact the sixth and seventh portions of the grounding terminal in a one-to-one correspondence, thereby achieving an electrical connection.

22. The connector assembly according to claim 21, characterized in that: The docking portion extends in a vertical direction. The second portion has a first extension extending in a second direction, which is closer to the first portion than the docking portion. The fourth portion has a second extension extending in a second direction, which is closer to the third portion than the docking portion. The first extension is offset downward relative to the first portion, and the second extension is offset upward relative to the third portion. The docking portion of the second portion is farther away from the first portion in a second direction than the docking portion of the fourth portion.

23. The connector assembly according to claim 22, characterized in that: The plastic body has multiple receiving slots arranged along a first direction, the receiving slots penetrating the plastic body vertically, and each pair of adjacent receiving slots is separated by a partition. Multiple docking terminals are correspondingly received in the multiple receiving slots, and the contact portion of the docking terminals is received in the receiving slots. The docking terminal that docks with the differential signal terminal is defined as the first terminal, and the docking terminal that docks with the ground terminal is defined as the second terminal. The partition located between two adjacent first terminals is defined as the first partition, and the partition located between adjacent first terminals and second terminals is defined as the second partition. A notch is provided on the second partition, the notch extending upward to the upper surface of the plastic body and connecting the two receiving slots on both sides of the second partition. The bottom of the notch is lower than the first partition.

24. The connector assembly according to claim 21, characterized in that: The welded portions of the two mating terminals electrically connected to the same grounding terminal are welded to the same gasket of a circuit board.

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