Electrical connector assembly

Abstract

The application discloses an electric connector assembly, which comprises a connecting piece and a mating piece. The connecting piece comprises a plurality of grounding terminals accommodated in a plurality of grounding slots. The grounding terminals comprise a first terminal and a second terminal stacked with each other. The first terminal comprises a first body and a first extension arm with a first contact part and an abutting part. The abutting part is arranged away from the first body relative to the first contact part. The first contact part is in contact with the corresponding grounding slot. The second extension arm of the second terminal is connected to one end of the second body and extends away from the second body. The second extension arm is provided with a second contact part. The abutting part is in abutment with the second extension arm at a position closer to the second body relative to the second contact part in the extension direction of the second extension arm. The second contact part is inserted into the grounding hole of the mating piece to be in contact with the corresponding grounding hole, so that the connecting piece and the mating piece are in stable common ground conduction through the grounding terminals, resonance is improved, and the shielding effect of the electric connector assembly is improved.

Description

Technical Field

[0001] This invention relates to an electrical connector assembly, and more particularly to an electrical connector assembly with good shielding effect. Background Technology

[0002] A connector assembly is disclosed in the prior art, comprising: a connector and a mating member. The connector includes: a conductive base, multiple ground terminals, and multiple signal terminals. The conductive base has multiple ground grooves and multiple signal receiving grooves. The multiple ground terminals are received in the multiple ground grooves, and the multiple signal terminals are received in the multiple signal receiving grooves. Each ground terminal includes a base and an extension arm extending longitudinally from the base. The extension arm has a first contact portion and a second contact portion. The base and the first contact portion are received in the corresponding ground groove, and the first contact portion is in contact with the inner wall of the mating ground groove. The mating member includes a conductor and multiple signal terminals. The conductor has multiple ground holes and multiple signal receiving holes. The multiple signal terminals are received in the multiple signal receiving holes. When the connector and the mating member are mated together, the extension arm of each ground terminal is inserted into one of the ground holes, so that the second contact portion is in contact with the inner wall of the ground hole to form a common ground connection. Each signal terminal is mated with one of the signal terminals.

[0003] However, in the existing technology, the first and second contact parts of the grounding terminal are located on the same extension arm. The grounding terminal has tolerances during manufacturing, which can easily lead to deformation or warping of the grounding terminal. When the connector and the mating part are mated, the extension arm of the grounding terminal may also deflect or tilt, which can easily lead to poor contact of the first or second contact part. It is impossible to achieve common ground conduction between the connector and the mating part through the grounding terminal, which requires the connector assembly to generate multiple resonances on the line, and the shielding effect of the connector assembly is poor.

[0004] Therefore, it is necessary to design a connector assembly with good shielding effect to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide an electrical connector assembly with good shielding effect. By setting a first contact portion on the first extension arm of the first terminal to contact the inner wall of the contact groove, and setting a second contact portion on the second extension arm of the second terminal to abut against the contact hole, the invention avoids the phenomenon of poor contact of the second contact portion caused by tilting or deflection of the first extension arm. This allows the connector and the mating part to form a stable common ground conduction through the grounding terminal, improves resonance, and enhances the shielding effect of the electrical connector assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An electrical connector assembly includes: a connector comprising: a conductive base having a plurality of signal receiving slots and a plurality of grounding slots; a plurality of signal terminals received in the plurality of signal receiving slots, the signal terminals being electrically isolated from the conductive base by an insulating member; and a plurality of grounding terminals received in the plurality of grounding slots, each grounding terminal comprising: a first terminal and a second terminal stacked on top of each other in a first direction, the first terminal comprising a first body and at least one first extension arm, the first extension arm being connected to one end of the first body and extending in a direction away from the first body, the first extension arm having a first contact portion and an abutment portion, the abutment portion being disposed away from the first body from the first contact portion in the extension direction of the first extension arm, the first contact portion being received in a corresponding grounding slot and in contact with the inner wall of the corresponding grounding slot, the first contact portion being disposed in a second direction on the side of the first extension arm facing the inner wall of the corresponding grounding slot, the second direction being perpendicular to the first direction, and the second terminal including the first terminal. The device includes a second body and at least one second extension arm. The second body is fixedly connected to the first body. The second extension arm is connected to one end of the second body and extends away from the second body. The second extension arm has a second contact portion. The abutting portion is located closer to the second body than the second contact portion in the extension direction of the second extension arm and abuts against the second extension arm in a first direction. A docking member is used to dock with a connecting member. It includes a conductor and a plurality of signal terminals. The conductor has a plurality of signal receiving holes and a plurality of grounding holes. At least one of the signal terminals is disposed in the signal receiving holes. The signal terminals are electrically isolated from the conductor by an insulator. When the docking member and the connecting member are docked together, the signal terminals are electrically connected. The second contact portion is inserted into one of the grounding holes and makes contact with the corresponding grounding hole. The second contact portion is disposed on the side of the second extension arm facing the inner wall of the corresponding grounding hole in a second direction.

[0007] Furthermore, the first extension arm is a cantilever structure, and the abutment portion is located at the free end of the first extension arm.

[0008] Furthermore, the first extension arm includes a first segment and a second segment. The first segment is inclined in a first direction away from the first body in a first direction, and the second segment is inclined in a first direction towards the second extension arm from the end of the first segment away from the first body in a first direction.

[0009] Furthermore, the first terminal is provided with two first extension arms, which are spaced apart in a second direction. Each first extension arm is provided with an abutting portion and a first contact portion. The second terminal is provided with two second extension arms, which are spaced apart in a second direction. Each second extension arm is provided with a second contact portion. In a first direction, the two second extension arms are arranged in a one-to-one correspondence with the two first extension arms, and the two abutting portions of the two first extension arms abut against the two second extension arms in a one-to-one correspondence.

[0010] Furthermore, both the first terminal and the second terminal are formed from metal sheet material, and the first terminal and the second terminal are stacked face to face in a first direction, with the first contact portion and the second contact portion both formed on the blanking surface.

[0011] Furthermore, the connector also includes multiple grounding conductors. The conductive base includes multiple common grounding grooves, a first mating surface, and a first mounting surface. The first mating surface faces the docking component, and the first mounting surface faces a first docking element. The grounding grooves penetrate the first mating surface, and the common grounding grooves penetrate the first mounting surface. The multiple common grounding grooves accommodate multiple grounding conductors. Each grounding conductor includes a first base and a welding portion. The first base has a first through hole and two first branches formed on opposite sides of the first through hole. One end of each of the two first branches is integrally connected to the first welding portion. The first branches are elastic, and a gap is formed between the first welding portion and the conductive base around its perimeter. The first welding portion is used to weld to the first docking element with a first solder, but the first solder is not welded and fixed together with the conductive base.

[0012] Furthermore, both the grounding trench and the common grounding trench are blind trenches, and the grounding trench and the common grounding trench are not connected.

[0013] Furthermore, each of the first branches forms a third contact portion on the outer side away from the first through hole. The third contact portion is received in the corresponding common trench and is in contact with the inner wall of the corresponding common trench. The two third contact portions are arranged opposite each other and the distance between them is greater than the maximum size of the first weld portion in the direction in which the two third contact portions are arranged opposite each other.

[0014] Furthermore, the first mating surface and the first mounting surface are arranged opposite each other along a third direction, which is perpendicular to the first direction and the second direction. The plurality of grounding grooves and the plurality of common grounding grooves are arranged one-to-one along the third direction, and each grounding groove is interconnected with its corresponding common grounding groove. For the grounding terminal and the grounding conductor that are respectively housed in the interconnected grounding groove and the common grounding groove, one of the first body and the second body is integrally connected to the corresponding first base.

[0015] Furthermore, the grounding terminal also includes at least one fourth contact portion, which is located between the first contact portion and the third contact portion in a third direction. The fourth contact portion is received in the corresponding grounding groove and is in contact with the inner wall of the corresponding grounding groove.

[0016] Furthermore, the first body extends along a third direction and does not exceed the second body, the first through hole is formed in the second body, and viewed in the first direction, the first through hole extends at least partially beyond the first body along a third direction in a direction away from the second extension arm.

[0017] Furthermore, both the conductive base and the conductive body are formed by stacking multiple metal sheets in a third-order upward direction.

[0018] Furthermore, the conductor includes multiple ground holes, a second mating surface, and a second mounting surface. The second mating surface faces the connector, and the second mounting surface faces a second mating element. The grounding hole penetrates the second mating surface, and the ground hole penetrates the second mounting surface. The connector also includes multiple mating terminals, which are housed within the multiple ground holes. Each mating terminal includes a second base and a second welding portion integrally connected to the second base. The second welding portion is exposed on the second mounting surface. The second base has a second through hole and two second branches formed on opposite sides of the second through hole. One end of each of the two second branches is integrally connected to the second welding portion. The second branches are elastic, and a gap is formed between the second welding portion and the conductor around its perimeter. The second welding portion is used to weld to the second mating element using a second solder, but the second solder is not welded to the conductor for fixation.

[0019] Furthermore, both the grounding hole and the common grounding hole are blind holes, and the grounding hole and the common grounding hole are not connected.

[0020] Furthermore, each of the second branches forms a fifth contact portion on the outer side away from the second through hole. The fifth contact portion is received in the corresponding common hole and is in contact with the inner wall of the corresponding common hole. The two fifth contact portions are arranged opposite each other and the distance between them is greater than the maximum size of the second weld portion in the direction in which the two fifth contact portions are arranged opposite each other.

[0021] Furthermore, the connector further includes multiple grounding conductors, and the conductive base further includes multiple common grounding grooves, a first mating surface, and a first mounting surface. The first mating surface faces the connector, and the first mounting surface faces a first mating element. The common grounding grooves extend through the first mounting surface. The multiple grounding conductors are housed within the multiple common grounding grooves. The grounding conductors are soldered to a first mating element using a first solder. Viewed perpendicular to the first mounting surface, the common grounding grooves are elliptical, and the grounding conductors are rectangular. The first solder falls into the area of ​​the corresponding common grounding groove and has a gap between it and the corresponding common grounding groove. The connector further includes multiple mating terminals, and the conductor further includes multiple ground holes, a second mating surface, and a second mounting surface. The second mating surface faces the connector, and the second mounting surface faces a second mating element. The ground hole penetrates the second mating surface. The multiple mating terminals are housed in the multiple ground holes. The mating terminals are soldered to the second mating element with a second solder. When viewed perpendicular to the second mounting surface, the ground holes are elliptical, the mating terminals are rectangular, and the second solder falls into the area of ​​the corresponding ground hole, with a gap between it and the corresponding ground hole.

[0022] Furthermore, each of the signal terminals includes a third body and two first clamping arms integrally connected to the third body. Each clamping arm is provided with at least one first conductive portion. The third body is received in the corresponding signal receiving groove and is electrically isolated from the conductive seat through the insulating member. The first conductive portion exposes the corresponding signal receiving groove. The size of the signal terminal is different from that of the signal terminal. Each of the signal terminals has a fourth body and two second clamping arms integrally connected to the fourth body. Each second clamping arm is provided with at least one second conductive portion. The fourth body is received in the corresponding signal receiving hole and is electrically isolated from the conductive body through the insulating member. The second conductive portion exposes the corresponding signal receiving hole. When the docking member and the connecting member are docked together, the two first clamping arms clamp the fourth body, and the first conductive portion is in lateral contact with the fourth body. The two second clamping arms clamp the third body, and the second conductive portion is in lateral contact with the third body.

[0023] Furthermore, the conductive base includes a first mating surface and a first mounting surface. The first mating surface faces the mating member, and the first mounting surface faces a first mating element. The signal terminal further includes a third body and a third welding portion. The third welding portion exposes the first mounting surface. The third body has a third through hole and two third branches formed on opposite sides of the third through hole. One end of each of the two third branches is integrally connected to the third welding portion, and a gap is formed between the third welding portion and the insulating member around its perimeter. The third welding portion is used to weld to the first mating element with a first solder. The conductor includes a second mating surface and a second mounting surface. The second mating surface faces the connector, and the second mounting surface faces a second mating element. The signal terminal also includes a fourth body and a fourth soldering portion. The fourth soldering portion exposes the second mounting surface. The fourth body has a fourth through hole and two fourth branches formed on opposite sides of the fourth through hole. One end of each of the two fourth branches is integrally connected to the fourth soldering portion, and a gap is formed between the fourth soldering portion and the insulator around its periphery. The fourth soldering portion is used to solder to the second mating element with a second solder.

[0024] Furthermore, the conductive base includes a first mating surface facing the conductor in a third direction, the third direction being perpendicular to the first and second directions. The conductor includes a second mating surface facing the conductive base in a third direction. The second contact portion protrudes outward toward the wall of the corresponding grounding hole. The wall of the grounding hole is further recessed inward with at least one snap-fit ​​groove. When the mating member and the connecting member are mated together in a third direction, the second contact portion and the corresponding snap-fit ​​groove are interference-fitted in the third direction, forming an interlocking mechanism, so that the first mating surface and the second mating surface are tightly fitted together or the gap between them does not exceed 0.12mm.

[0025] Furthermore, from a third-party perspective, the distance between the first contact portion and the second contact portion is less than or equal to 0.7 mm.

[0026] Furthermore, the signal receiving slots are arranged in multiple rows, with adjacent rows of signal receiving slots staggered. Multiple grounding terminals are distributed between adjacent rows of signal receiving slots, and a connecting line is formed between two adjacent signal terminals in adjacent rows of signal receiving slots. The grounding terminal is plate-shaped, and the plate surface of one of the grounding terminals intersects with the connecting line.

[0027] Compared with the prior art, the present invention has the following beneficial effects: The grounding terminal in this invention includes a first terminal and a second terminal stacked on top of each other. The first extension arm of the first terminal has a first contact portion that makes contact with the inner wall of the corresponding grounding groove in a second direction. The second extension arm of the second terminal has a second contact portion for inserting into one of the grounding holes and making contact with the corresponding grounding hole in a second direction. This ensures that the first and second contact portions contact the corresponding grounding groove and grounding hole without interference, preventing poor contact of the second contact portion due to tilting or deflection of the first extension arm. This allows the connector and mating member to form a stable common ground connection through the grounding terminal. The first extension arm also has an abutment portion, which is larger than the first terminal... The contact portion is located away from the first body, and the abutment portion is located closer to the second body than the second contact portion in the extension direction of the second extension arm, and abuts against the second extension arm in the first direction. The first contact portion, the abutment portion, and the second contact portion form a shorter ground return path between the conductive base and the conductive body, which shortens the ground return path formed between the connector and the mating member. Moreover, the abutment direction of the abutment portion is different from the contact direction of the first contact portion and the second contact portion, so that the tilting or deflection of the first terminal and the second terminal do not affect each other, further improving the stable common ground conduction formed by the connector and the mating member through the grounding terminal, improving resonance, and improving the shielding effect of the electrical connector assembly. Attached Figure Description

[0028] Figure 1 This is an exploded perspective view of the electrical connector assembly, the first mating element, and the second mating element according to the first embodiment of the present invention. Figure 2 for Figure 1 A partial sectional view of a plane defined by the leading edge YZ of the connecting member before it mates with the mating member; Figure 3 for Figure 2 A schematic diagram showing the connection between the middle connector and the mating part; Figure 4 for Figure 1 A partial sectional view taken along a plane defined by XZ, showing the middle connector docking with the first docking element, but not docking with the docking element; Figure 5 for Figure 4 A schematic diagram showing the connection between the middle connector and the mating part; Figure 6 for Figure 1 Exploded 3D view of the grounding terminal; Figure 7 for Figure 1 Bottom view of the connecting component; Figure 8 for Figure 1 Top view of the mid-section joint; Figure 9This is a partial cross-sectional view of a plane defined by the leading edge YZ of the electrical connector assembly in the second embodiment of the present invention after it has been mated with the first mating element and the second mating element, and before the connector has been mated with the mating element. Figure 10 for Figure 9 A schematic diagram showing the connection between the middle connector and the mating part; Figure 11 This is a partial cross-sectional view of a plane defined by XZ, showing the electrical connector assembly of the second embodiment of the present invention after it has been mated with the first mating element and the second mating element, and before the connector has been mated with the mating element. Figure 12 for Figure 11 A schematic diagram showing the connection between the middle connector and the mating part; Figure 13 This is another arrangement of the grounding terminals of the electrical connector assembly in the third embodiment of the present invention.

[0029] Explanation of reference numerals in the accompanying drawings for the specific implementation methods: Detailed Implementation

[0030] To facilitate a better understanding of the purpose, structure, features, and effects of this invention, the invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0031] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the position or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In the first to third embodiments of the present invention, the first direction is the front-back direction, the second direction is the left-right direction, and the third direction is the up-down direction. Of course, the orientation can be adjusted according to the requirements. For example, the first direction can also be the up-down direction or the left-right direction, the second direction can also be the front-back direction or the up-down direction, and the third direction can also be the front-back direction or the left-right direction. The second direction is perpendicular to the first direction, and the third direction is perpendicular to the first direction and the second direction.

[0035] For ease of understanding, the Z-axis extension direction of the electrical connector assembly is defined as the up-down direction, where the positive Z-axis direction is upward; the Y-axis extension direction is defined as the left-right direction, where the positive Y-axis direction is to the right; and the X-axis extension direction is defined as the front-back direction, where the positive X-axis direction is forward.

[0036] like Figures 1 to 8 As shown, this is the first embodiment of the present invention. Figures 9 to 12 As shown, this is a second embodiment of the present invention. In both embodiments, the electrical connector assembly 100 includes a connector 1 and a mating member 2. The connector 1 and the mating member 2 are mated together in the vertical direction. The side of the connector 1 opposite to the mating member 2 in the vertical direction can be mated with a first mating element 200. The side of the mating member 2 opposite to the connector 1 in the vertical direction is connected with a second mating element 300. Specifically, the connector 1 is located below the mating member 2. In other embodiments, the connector 1 can also be located above the mating member 2. Of course, the connector 1 and the mating member 2 can also be mated in the front-back direction. The first mating element 200 can be a circuit board, a chip, or a cable. The second mating element 300 can also be a circuit board, a chip, or a cable.

[0037] like Figure 1 and Figure 2 , Figure 9As shown, in the first and second embodiments, the connector 1 includes a conductive base 11, a plurality of signal terminals 12, a plurality of ground terminals 13, a plurality of ground conductors 14, and a plurality of insulating members 15. The conductive base 11 includes a first mating surface 111 and a first mounting surface 112 arranged vertically opposite each other. The first mating surface 111 faces the connector 2, and the first mounting surface 112 faces the first mating element 200. In other embodiments, the first mating surface 111 and the first mounting surface 112 may not be arranged vertically opposite each other. For example, the first mating surface 111 is located on the front side of the electrical connector 1, and the first mounting surface 112 is located on the bottom side of the connector 1.

[0038] like Figure 1 and Figure 2 , Figure 9 As shown, in the first and second embodiments, the conductive base 11 is provided with a plurality of signal receiving slots 114, a plurality of grounding slots 113, and a plurality of common grounding slots 115. The signal receiving slots 114 penetrate the first mating surface 111 and the first mounting surface 112, the grounding slots 13 penetrate the first mating surface 111, and the common grounding slots 115 penetrate the first mounting surface 112. A plurality of signal terminals 12 are received in the plurality of signal receiving slots 114. The signal terminals 12 are electrically isolated from the conductive base 11 by insulating members 15. The plurality of insulating members 15 are independently arranged. In other embodiments, the plurality of insulating members 15 can be connected together by injection molding, so that the plurality of insulating members 15 are connected together on the side of the conductive base 11 away from the first mating surface 111. A plurality of grounding terminals 13 are received in the plurality of grounding slots 113, and the grounding terminals 13 are grounded and connected to the inner wall of the corresponding grounding slot 113. A plurality of grounding conductors 14 are received in the plurality of common grounding slots 115, and the grounding conductors 14 are grounded and connected to the inner wall of the corresponding common grounding slot 115. Multiple grounding conductors 14 and multiple signal terminals 12 in connector 1 are electrically connected to the first mating element 200 by multiple first solders 3, wherein the first solders 3 are solder balls.

[0039] like Figure 1 and Figure 2 , Figure 9 As shown, in the first and second embodiments, the docking member 2 includes a conductor 21, a plurality of signal terminals 22, a plurality of docking terminals 23, and a plurality of insulators 24.

[0040] like Figure 1 and Figure 2 , Figure 9As shown, in the first and second embodiments, the conductor 21 includes a second mating surface 211 and a second mounting surface 212 disposed opposite to each other. The second mating surface 211 is disposed facing the docking member 2, and the second mounting surface 212 is disposed facing the second docking element 300. In other embodiments, the second mating surface 211 and the second mounting surface 212 may not be disposed opposite to each other. For example, the second mating surface 211 is disposed on one side of the docking member 2 in the front-back direction, and the second mounting surface 212 is disposed on one side of the docking member 2 in the vertical direction.

[0041] like Figure 1 and 2 , Figure 9 As shown, in the first and second embodiments, the conductor 21 is provided with a plurality of grounding holes 213, a plurality of signal receiving holes 214, and a plurality of common ground holes 215. The signal receiving holes 214 penetrate through the second mating surface 211 and the second mounting surface 212. A plurality of signal terminals 22 and a plurality of insulators 24 are housed in the plurality of signal receiving holes 214. At least one signal terminal 22 is provided in the signal receiving hole 214. The signal terminal 22 in the signal receiving hole 214 is electrically isolated from the conductor 21 by the insulator 24. The plurality of insulators 24 are independently provided to each other (in other embodiments, the plurality of insulators 24 may be connected together by a single injection molding process, so that the plurality of insulators 24 are positioned opposite the second mating surface 21 of the conductor 21). (One side of 1 is connected together), grounding hole 213 passes through the second mating surface 211, grounding hole 213 is used for the insertion of grounding terminal 13, common grounding hole 215 passes through the second mounting surface 212, multiple common grounding holes 215 are used to accommodate multiple mating terminals 23, specifically, each common grounding hole 215 has one mating terminal 23. When mating member 2 and connecting member 1 are mated together, a part of each grounding terminal 13 is inserted into one of the grounding holes 213 and contacts the corresponding grounding hole 213, so that the conductive seat 11 of connecting member 1 and the conductive body 21 of mating member 2 together form a comprehensive overall shielding structure, which can better prevent signal crosstalk. Each signal terminal 12 is mated with one of the signal terminals 22 to realize signal conduction. Multiple mating terminals 23 and multiple signal terminals 22 in mating member 2 are soldered to the second mating element 300 through multiple second solder 4 to form electrical conduction, wherein the second solder 4 is solder ball.

[0042] like Figure 1 and Figure 2 , Figure 9 and Figure 10As shown, in the first and second embodiments, the metal base of the conductive base 11 is defined as the first metal base 116, and the metal sheet of the conductive base 11 is defined as the first metal sheet 1161. Therefore, the thickness of each first metal sheet 1161 can be made very small. It can be formed by etching or stamping of thin metal, which facilitates the manufacturing and forming of the conductive base 11. Multiple first metal sheets 1161 are provided with multiple through slots. In other embodiments, the first metal base 116 can be an integral structure made of metal material. Multiple signal receiving slots 114 pass through the first mating surface 111 and the first mounting surface 112 vertically. Each signal receiving slot 114 contains two signal terminals 12 for transmitting differential signals. The two signal terminals 12 share the same insulating member 15 and are electrically isolated from the conductive base 11. In other embodiments, each signal receiving slot 114 can also contain one signal terminal 12 for transmitting single-ended signals.

[0043] like Figure 1 and Figure 2 As shown, in the first embodiment, multiple grounding grooves 113 extend upward through the first mating surface 111, and multiple common grounding grooves 115 extend downward through the first mounting surface 112. The multiple grounding grooves 113 and multiple common grounding grooves 115 are arranged vertically in correspondence, and the grounding grooves 113 and their corresponding common grounding grooves 115 are vertically connected. The grounding terminal 13 and the grounding conductor 14 are integrally connected. Each first metal piece 1161 of the conductive base 11 is provided with multiple through grooves (unlabeled). When the multiple first metal pieces 1161 are stacked vertically, a set of through grooves arranged vertically aligned with the multiple first metal pieces 1161 are stacked to form a grounding groove 113 for accommodating the grounding terminal 13, or a signal receiving groove 114 for accommodating the signal terminal 12, or a common grounding groove 115 for accommodating the grounding conductor 14.

[0044] like Figure 9 and Figure 10 As shown, in the second embodiment, multiple grounding grooves 113 extend upward through the first mating surface 111, and the grounding grooves 113 do not extend downward through the first mounting surface 112. The common grounding groove 115 extends downward through the first mounting surface 112, and the common grounding groove 115 does not extend upward through the first mating surface 111. Furthermore, the grounding grooves 113 and the common grounding groove 115 are not connected. Thus, both the grounding grooves 113 and the common grounding groove 115 are blind grooves, and the grounding terminal 13 and the grounding conductor 14 are thus separately arranged. The portion of the first metal sheet 1161 corresponding to the multiple grounding grooves 113 and the multiple common grounding grooves 115 formed as blind grooves is provided with multiple through grooves, and the portion of the first metal sheet 1161 is not provided with through grooves.

[0045] like Figure 1 and Figure 6 , Figure 9 and Figure 11As shown, in the first and second embodiments, each grounding terminal 13 includes a first terminal 131 and a second terminal 132; both the first terminal 131 and the second terminal 132 are formed by cutting metal plates, and the first terminal 131 and the second terminal 132 are stacked face to face in the front-back direction. The first terminal 131 includes a first body 1311 and two first extension arms 1312, which are spaced apart from each other. Both first extension arms 1312 are integrally connected to the upper end of the first body 1311. In other embodiments, the first terminal 131 has only one first extension arm 1312 connected to the first body 1311.

[0046] like Figure 2 and Figure 6 , Figure 9 and Figure 10 As shown, in the first and second embodiments, the first body 1311 is plate-shaped and housed within a corresponding grounding groove 113; the first extension arm 1312 is a cantilever structure; each first extension arm 1312 has a first contact portion 13a and an abutment portion 13b. The first contact portion 13a is housed within the corresponding grounding groove 113 and elastically contacts the inner wall of the corresponding grounding groove 113. The two first contact portions 13a elastically contact the inner wall of the grounding groove 113 in opposite directions in the left-right direction. In the extension direction of the first extension arm 1312, the abutment portion 13b is provided at the free end of the first extension arm 1312, and the abutment portion 13b is disposed further away from the first body 1311 than the first contact portion 13a.

[0047] like Figure 4 and Figure 6 , Figure 11As shown, in the first and second embodiments, the first extension arm 1312 includes a first segment 13121 and a second segment 13122. In the front-rear direction, the first segment 13121 is inclined from the upper end of the first body 1311 away from the second extension arm 1322, and the second segment 13122 is inclined from the upper end of the first segment 13121 towards the second extension arm 1322. That is, from the left-right direction, the first segment 13121 and the second segment 13122 form an obtuse-angled inverted "V" shape. By having different extension directions of the first segment 13121 and the second segment 13122, the first extension arm 13122... 312 has a supporting force that abuts against the second extension arm 1322 and is stably connected to the second extension arm 1322. The first contact portion 13a and the abutting portion 13b are both located in the second segment 13122. The first contact portion 13a is formed on the unloading surface, and the abutting portion 13b is formed near the plate surface or the edge of the plate surface. The abutting portion 13b abuts against the second terminal 132 in the front-back direction, so that the contact direction between the first terminal 131 and the grounding groove 113 is different from the contact direction between the first terminal 131 and the second terminal 132, thereby avoiding the tilting or deflection of the second terminal 132 from affecting the contact between the second terminal 132 and the grounding hole 213.

[0048] like Figure 2 and Figure 3 , Figure 9 and Figure 10 , Figure 11 and Figure 12As shown, in the first and second embodiments, the second terminal 132 includes a second body 1321 and two second extension arms 1322 (in other embodiments, the second terminal 132 may include only one second extension arm 1322 connected to the second body 1321). The second body 1321 is plate-shaped and housed in a corresponding grounding groove 113. The second body 1321 and the first body 1311 are stacked and fixedly connected to each other. The two second extension arms 1322 are spaced apart from each other on the left and right sides. Both second extension arms 1322 are integrally connected to the upper end of the second body 1321. In the front-back direction, the two second extension arms 1322 are arranged one-to-one with the two first extension arms 1312. The two abutting portions 13b of the two first extension arms 1312 are... Two second extension arms 1322 are connected in a one-to-one correspondence, forming more conductive paths between the first terminal 131 and the second terminal 132. Each second extension arm 1322 is provided with a second contact portion 13c, which is also formed on the blanking surface. The second contact portion 13c protrudes outward toward the wall of the corresponding grounding hole 213. The two second contact portions 13c contact and conduct with the inner wall of the grounding hole 213 in opposite directions in the left-right direction. The abutting portion 13b of the first terminal 131 abuts against the second extension arm 1322 at a position closer to the second body 1321 than the second contact portion 13c in the extension direction of the second extension arm 1322. From the left-right direction, the second extension arm 1322 is a structure that extends straight along the up-down direction. In the up-down direction, the distance between the second contact portion 13c and the first contact portion 13a is less than or equal to 0.7mm. Of course, in actual use, the smaller the distance between the second contact portion 13c and the first contact portion 13a, the better. Specifically, at a transmission bandwidth of 60 GHz, a spacing of less than 0.625 between the second contact portion 13c and the first contact portion 13a results in better high-frequency performance. In other embodiments, viewed from the left-right direction, the second extension arm 1322 can be configured with a first segment 13121 and a second segment 13122 in an obtuse-angled inverted "V" shape, while the first extension arm 1312 has a structure that extends approximately straight in the vertical direction, which can also achieve stable abutment contact between the first extension arm 1312 and the second extension arm 1322.

[0049] like Figure 2 and Figure 3 , Figure 9 and Figure 10As shown, in the first and second embodiments, the grounding conductor 14 includes a first base 141 and a first welding portion 142. The first base 141 has a first through hole 1411 and two first branches 1412 formed on the left and right sides of the first through hole 1411. The first branches 1412 are elastic, and each first branch 1412 has a third contact portion 14a. The third contact portion 14a is received in a corresponding common ground trench 115 and is in contact with the inner wall of the corresponding common ground trench 115. The two third contact portions 14a are in opposite directions in the left and right directions and are in contact with the inner wall of the corresponding common ground trench 115, thereby increasing the contact points between the grounding conductor 14 and the common ground trench 115, thereby forming more grounding return paths. The lower ends of both first branches 1412 are integrally connected to the first welding portion 142, which is exposed downwards on the first mounting surface 112. It is electrically connected to the first mating element 200 by welding with the first solder 3. The distance between the two third contact portions 14a in the left-right direction is less than the maximum dimension of the first welding portion 142 in the left-right direction, increasing the elasticity of the first branch 1412 in the up-down direction and preventing solder cracking. A gap is formed between the first welding portion 142 and the conductive base 11 in the direction perpendicular to the up-down direction. After the first welding portion 142 is welded to the first mating element 200 by the first solder 3, the first solder 3 is not welded and fixed together with the conductive base 11. During the welding of the mating part 1 to the first mating element 200, the deformation of the conductive base 11 and the first mating element 200 is buffered by the elastic first branch 1412, preventing solder cracking between the first welding portion 142 and the first mating element 200.

[0050] like Figure 5 and Figure 7 As shown, in the first embodiment, viewed vertically, the common ground trench 115 is elliptical, and the first welding portion 142 of the grounding conductor 14 is plate-shaped. Compared to a rectangular common ground trench 115, the elliptical common ground trench 115 ensures a smaller size while also making it easier to create a gap between the first solder 3 and the common ground trench 115. When the first welding portion 142 of the grounding conductor 14 is connected to the first mating element 200 via the first solder 3, there is a gap between the first solder 3 and the common ground trench 115. In other embodiments, viewed vertically, the common ground trench 115 can also be rhomboid, achieving a similar purpose.

[0051] like Figure 2 , Figure 3 and Figure 6As shown, in the first embodiment, in the vertical direction, the second body 1321 of the second terminal 132 housed in the vertically penetrating grounding groove 113 and the common grounding groove 115 is integrally connected to the corresponding grounding conductor 14, and the first body 1311 extends downward and does not exceed the corresponding grounding conductor 14, so that the grounding conductor 14 is not completely blocked by the first body 1311 in the front-back direction, and has better elasticity. In the front-back direction, the first through hole 1411 is at least partially exposed downward outside the first body 1311, which can increase the elasticity of the first body 1311. In other embodiments, the first body 1311 of the first terminal 131 housed in the vertically penetrating grounding groove 113 and the common grounding groove 115 can also be integrally connected to the corresponding grounding conductor 14, and the second body 1321 extends downward and does not exceed the first body 1311.

[0052] like Figure 2 and Figure 3 As shown, in the first embodiment, the grounding terminal 13 further has two fourth contact portions 13d. The fourth contact portions 13d are located on the first body 1311 near the first extension arm 1312. The fourth contact portions 13d are positioned vertically between the first contact portion 13a and the third contact portion 14a. The fourth contact portions 13d are housed in the corresponding grounding groove 113 and are in contact with the inner wall of the corresponding grounding groove 113. In other embodiments, the number of fourth contact portions 13d can be set as needed, for example, one or more than two. The fourth contact portions 13d can also be located on the second body 1321.

[0053] like Figure 9 and Figure 10 As shown, in the second embodiment, the grounding terminal 13 and the grounding conductor 14 are spaced apart vertically and are separate. The grounding terminal 13 and the grounding conductor 14 are not connected. The downward extension length of the first body 1311 and the downward extension length of the second body 1321 of the grounding terminal 13 are equal. The grounding terminal 13 also has two fourth contact portions 13d, which are located on the first body 1311 and are housed in corresponding grounding grooves 113, and are in contact with the inner wall of the corresponding grounding grooves 113. In other embodiments, the number of fourth contact portions 13d can be set as needed, for example, one or more than two. The fourth contact portions 13d can also be located on the second body 1321.

[0054] like Figure 1 and Figure 2 , Figure 9 and Figure 10As shown, in the first and second embodiments, each signal terminal 12 includes a third body 121, two first clamping arms 122 and a third welding part 12b. The two first clamping arms 122 are spaced apart in the left and right direction, and the lower ends of the two first clamping arms 122 are integrally connected to the upper end of the third body 121. The third welding part 12b is located at the lower end of the third body 121, and the third welding part 12b exposes the first mounting surface 112 downward. The third welding part 12b is used to weld to the first mating element 200 by the first solder 3. The third body 121 is housed in the corresponding signal receiving slot 114 and is electrically isolated from the conductive base 11 by an insulating member 15. The third body 121 has a third through hole 1211 and two third branches 1212 formed on the left and right sides of the third through hole 1211. The third branches 1212 are elastic, and the lower ends of the two third branches 1212 are integrally connected to the third welding part 12b. Providing the third through hole 1211 and forming the two third branches 1212 can increase the elasticity of the third body 121. Each first clamping arm 122 is provided with at least one first conductive part 12a, and the first conductive part 12a exposes the corresponding signal receiving slot 114 in the vertical direction. The third solder part 12b forms a gap with the insulating member 15 in the direction perpendicular to the vertical direction, so that the third solder part 12b has enough space to deform, so as to prevent the third solder part 12b from abutting against the insulating member 15 when deformed. Furthermore, the first solder 3 is not welded and fixed to the insulating member 15, but only connected to the third solder part 12b. Therefore, the deformation of the insulating member 15 will not affect the connection between the first solder 3 and the third solder part 12b, thereby avoiding a large relative positional offset between the first solder 3 and the third solder part 12b, and thus avoiding solder cracking.

[0055] like Figure 1 and Figure 2 , Figure 9 As shown, in the first and second embodiments, the conductor 21 is formed by stacking multiple metal sheets. The metal base of the conductor 21 is defined as the second metal base 216, and the metal sheet of the conductor 21 is defined as the second metal sheet 2161. Therefore, the thickness of each second metal sheet 2161 can be made very small. It can be formed by etching or stamping with thinner metal, which is convenient for manufacturing. The multiple second metal sheets 2161 are provided with multiple through holes.

[0056] like Figure 1 and Figure 2 As shown, in the first embodiment, multiple grounding holes 213 and multiple common grounding holes 215 are arranged vertically in a corresponding manner, and the grounding holes 213 and the corresponding common grounding holes 215 are vertically connected. Each second metal sheet 2161 of the conductor 21 is provided with multiple through holes. When multiple second metal sheets 2161 are stacked vertically, a set of through holes of multiple second metal sheets 2161 aligned vertically are stacked to form a vertically connected signal receiving hole 214 or grounding hole 213.

[0057] like Figure 9 As shown, in the second embodiment, multiple grounding holes 213 penetrate downward through the second mating surface 211, and the grounding holes 213 do not penetrate upward through the second mounting surface 212. The common grounding hole 215 penetrates upward through the second mounting surface 212, and the common grounding hole 215 does not penetrate downward through the second mating surface 211. Furthermore, the grounding holes 213 and the common grounding hole 215 are not connected, thus both the grounding holes 213 and the common grounding hole 215 are blind holes. The portion of the second metal sheet 2161 corresponding to the multiple grounding holes 213 and the common grounding hole 215 that are formed as blind holes is provided with multiple through holes, and the portion of the second metal sheet 2161 is not provided with through holes.

[0058] like Figure 9 and Figure 10 As shown, in the second embodiment, at least one snap-fit ​​groove 2131 is formed on the inner wall of the grounding hole 213. A snap-fit ​​portion 2131a is formed on the side of the snap-fit ​​groove 2131 near the second mating surface 211 in the vertical direction, allowing the second contact portion 13c to be press-fitted with the corresponding snap-fit ​​portion in the vertical direction. At least a portion of the through-hole of one of the second metal pieces 2161 protrudes inward relative to the through-hole of an adjacent second metal piece 2161 on the side of its vertical direction away from the second mating surface 211, forming a snap-fit ​​portion 2131a around the through-hole of the adjacent second metal piece 2161 near the second mating surface 211. In this embodiment, each signal receiving hole 214 contains two signal terminals 22 for transmitting differential signals. The two signal terminals 22 share the same insulator 24 and are electrically isolated from the conductor 21. In other embodiments, each signal receiving groove 114 may contain one signal terminal 22.

[0059] like Figure 3 and Figure 5 , Figure 9 and Figure 11As shown, in the first and second embodiments, each mating terminal 23 includes a second base 231 and a second welding portion 23a integrally connected to the second base 231. The second base 231 has a second through hole 2311 and two second branches 2312 formed on the left and right sides of the second through hole 2311. The upper ends of the two second branches 2312 are integrally connected to the second welding portion 23a. The second branches 2312 are elastic. Providing the second through hole 2311 and the two second branches 2312 can increase the elasticity of the mating terminal 23. In the left-right direction, at least one fifth contact portion 23b is formed on the outer side of each second branch 2312. The fifth contact portion 23b is received in the corresponding common hole 215 and is in contact with the inner wall of the corresponding common hole 215. The distance between the two fifth contact portions 23b in the left-right direction is less than the maximum size of the first welding portion 142 in the left-right direction, which increases the elasticity of the second branch 2312 in the up-down direction. The second welding part 23a is exposed upward on the second mounting surface 212, and a gap is formed between the second welding part 23a and the conductor 21 in a direction perpendicular to the vertical direction. After the second welding part 23a is welded to the second mating element 300 by the second solder 4, the second solder 4 is not welded and fixed together with the conductor 21. During the welding of the mating part 2 to the second mating element 300, the above structure can avoid the deformation of the conductor 21 and the second mating element 300 from affecting the welding connection between the second solder 4 and the second welding part 23a and the second mating element 300, thereby avoiding solder cracking.

[0060] like Figure 8 As shown, in the first embodiment, viewed vertically, the common ground hole 215 is elliptical, and the second welding portion 23a of the mating terminal 23 is plate-shaped. Compared to a rectangular common ground hole 215, the elliptical common ground hole 215 ensures a smaller size while also making it easier to create a gap between the second solder 4 and the grounding hole 213. When the second welding portion 23a of the mating terminal 23 is connected to the second mating element 300 via the second solder 4, there is a gap between the second solder 4 and the common ground hole 215. In other embodiments, viewed vertically, the common ground hole 215 can also be rhomboid, achieving a similar purpose. In the second embodiment, the common ground hole 215 can also be configured in the same way.

[0061] like Figure 1 and Figure 4 , Figure 9 and Figure 11 As shown, in the first and second embodiments, both the signal terminal 22 and the signal terminal 12 are plate-shaped. The size of the signal terminal 22 is different from that of the signal terminal 12. Specifically, the width of the plate surface of the signal terminal 22 is different from that of the plate surface of the signal terminal 12.

[0062] like Figure 4and Figure 5 , Figure 11 and Figure 12 As shown, in the first and second embodiments, each signal terminal 22 includes a fourth body 221, two second clamping arms 222 and a fourth welding part 22b. The two second clamping arms 222 are spaced apart in the front-back direction, and the lower ends of the two second clamping arms 222 are integrally connected to the upper end of the fourth body 221. Each second clamping arm 222 is provided with at least one second conductive part 22a. The second conductive part 22a exposes a corresponding insulator 24 in the vertical direction and exposes a corresponding signal receiving hole 214 in the vertical direction.

[0063] like Figure 2 and Figure 4 , Figure 9 and Figure 11 As shown, in the first and second embodiments, the fourth welding part 22b is located at the upper end of the fourth body 221. The fourth welding part 22b is used to weld to the second mating element 300 by means of the second solder 4. The fourth body 221 is housed in the corresponding signal receiving hole 214 and is electrically isolated from the conductor 21 by means of the insulator 24. The fourth body 221 has a fourth through hole 2211 and two fourth branches 2212 formed on the front and rear sides of the fourth through hole 2211. The fourth branches 2212 are elastic, and the lower ends of the two fourth branches 2212 are integrally connected to the fourth welding part 22b. The fourth through hole 2211 and the two fourth branches 2212 can provide... The elasticity of the fourth body 221 is increased, and the fourth solder part 22b exposes the second mounting surface 212 upward. The fourth solder part 22b forms a gap with the conductive base 11 in the direction perpendicular to the vertical direction, so that the fourth solder part 22b has enough space to deform, so as to prevent the fourth solder part 22b from abutting against the insulator 24 when deformed. Moreover, the second solder 4 is not welded and fixed to the insulator 24, but only connected to the fourth solder part 22b. Therefore, the deformation of the insulator 24 will not affect the connection between the second solder 4 and the fourth solder part 22b, thereby avoiding a large relative positional offset between the second solder 4 and the fourth solder part 22b, and thus avoiding solder cracking.

[0064] like Figure 3 and Figure 5 , Figure 10 and Figure 12As shown, in the first and second embodiments, when the docking member 2 and the connecting member 1 are docked together, the plate surface of the signal terminal 12 is perpendicular to the plate surface of the signal terminal 22. The two first clamping arms 122 clamp the fourth body 221, and the first conductive part 12a is in lateral contact with the fourth body 221. The two second clamping arms 222 clamp the third body 121, and the second conductive part 22a is in lateral contact with the third body 121. The second contact part 13c of each grounding terminal 13 extends into the corresponding grounding hole 213 and contacts the inner wall of the corresponding grounding hole 213 to form a common ground connection. The second contact part 13c and the fastening part 2131a on the lower side of the corresponding snap-fit ​​groove 2131 are interference-fitted in the vertical direction, and the two form an interlocking mechanism, so that the first docking surface 111 and the second docking surface 211 are tightly fitted together or the gap between them does not exceed 0.12mm.

[0065] like Figure 13 As shown, this is the third embodiment of the present invention. The only difference between the third embodiment and the second embodiment is the arrangement of the grounding terminal 13 and the arrangement of the signal terminal 12. The specific structure of other components can be referred to the second embodiment. In the third embodiment, multiple signal receiving slots 114 are arranged in multiple rows in the front-back direction. Multiple grounding terminals 13 are distributed between two adjacent rows of signal receiving slots 114. The two signal terminals 12 constituting the differential signal pair are arranged opposite each other in a direction perpendicular to the row (in this embodiment, the front-back direction). A connecting line L1 is formed between any two adjacent signal receiving slots 114, and at least one grounding terminal 13 is distributed between any two adjacent signal terminals 12 in any two adjacent signal receiving slots 114. The grounding terminal 13 is plate-shaped, and the plate surface of the grounding terminal 13 located between two adjacent signal receiving slots 114 intersects with the connecting line L1. Thus, the plate surface of the grounding terminal 14 is arranged at a certain angle relative to the front-back direction and the left-right direction.

[0066] In other embodiments (not shown), the conductive base 11 includes an insulating plastic and a conductive plating layer. The insulating plastic has multiple signal receiving grooves 114 and multiple grounding grooves 113. The walls of each signal receiving groove 114 and each grounding groove 113 are provided with a conductive plating layer. Furthermore, the entire outer surface of the insulating plastic is plated with a conductive plating layer. The insulating plastic and the conductive plating layer together form the conductive base 11. Signal terminals 12 are received in the signal receiving grooves 114 and are electrically isolated from the conductive plating layer of the grounding grooves 113 of the conductive base 11. Each grounding terminal 13 is received in the grounding groove 113 and abuts against the corresponding inner wall, and is conductively connected to the conductive plating layer of the grounding groove 113. The conductor 21 also includes an insulating plastic and a conductive plating layer. The insulating plastic has multiple signal receiving holes 214 and multiple grounding holes 213. The walls of each signal receiving hole 214 and each grounding hole 213 are provided with a conductive plating layer. Furthermore, the entire outer surface of the insulating plastic is plated with a conductive plating layer. Signal terminal 22 is housed in signal receiving hole 214 and is electrically isolated from the conductive plating of grounding hole 213 of conductor 21. When docking member 2 and connector 1 are docked together, grounding terminal 13 is inserted into grounding hole 213 and abuts against the inner wall of grounding hole 213, and is conductive to the conductive plating of grounding hole 213; each signal terminal 12 is docked and conductive to signal terminal 22. This structure, in which conductive base 11 and conductor 21 are made of insulating plastic and conductive plating, can be used in the first, second, and third embodiments of the present invention.

[0067] In summary, the electrical connector assembly of the present invention has the following beneficial effects: (1) In this invention, the connector 1 is provided with a conductive base 11, the docking member 2 is provided with a conductive body 21, and the grounding terminal 13 includes a first terminal 131 and a second terminal 132 stacked on top of each other. The first extension arm 1312 of the first terminal 131 has a first contact portion 13a that makes contact with the inner wall of the corresponding grounding groove 113 in the second direction. The second extension arm 1322 of the second terminal 132 has a second contact portion 13c that is inserted into one of the grounding holes 213 and makes contact with the corresponding grounding hole 213 in the second direction, so that the first contact portion 13a and the second contact portion 13c do not interfere with each other and make contact with the corresponding grounding groove 113 and grounding hole 213, avoiding the phenomenon of poor contact of the second contact portion 13c due to the tilting or deflection of the first extension arm 1312. Thus, the connector 1 and the docking member 2 form a stable common ground connection through the grounding end. The first extension arm 1312 also The device has an abutment portion 13b, which is located further away from the first body 1311 than the first contact portion 13a. The abutment portion 13b is located closer to the second body 1321 than the second contact portion 13c in the extension direction of the second extension arm 1322, and abuts against the second extension arm 1322 in the first direction. A shorter ground return path is formed between the conductive base 11 and the conductor 21 through the first contact portion 13a, the abutment portion 13b and the second contact portion 13c, which shortens the ground return path formed between the connector 1 and the mating member 2. The abutment direction of the abutment portion 13b is different from the contact direction of the first contact portion 13a and the second contact portion 13c, so that the tilting or deflection of the first terminal 131 and the second terminal 132 do not affect each other, further improving the stable common ground conduction formed by the connector 1 and the mating member 2 through the grounding end, improving resonance, and improving the shielding effect of the electrical connector assembly 100.

[0068] (2) The first extension arm 1312 is a cantilever structure with a certain elasticity. The abutment part 13b is provided at the free end of the first extension arm 1312, so that the end of the first extension arm 1312 along the extension direction contacts and communicates with the second abutment part 13b, thus avoiding the formation of a stake effect from the first contact part 13a of the first extension arm 1312 to the free end of the first extension arm 1312.

[0069] (3) The first extension arm 1312 includes a first segment 13121 and a second segment 13122. In the front-back direction, the first segment 13121 is inclined from the upper end of the first body 1311 toward the direction away from the second extension arm 1322, and the second segment 13122 is inclined from the upper end of the first segment 13121 toward the direction close to the second extension arm 1322. Because the extension directions of the first segment 13121 and the second segment 13122 are different, the first extension arm 1312 has a supporting force to abut against the second extension arm 1322 and is stably connected to the second extension arm 1322.

[0070] (4) The two second extension arms 1322 of the second terminal 132 are arranged one-to-one with the two first extension arms 1312 of the first terminal 131, which can increase the elasticity of the grounding terminal 13 in the left and right direction and facilitate insertion. The two abutting parts 13b of the two first extension arms 1312 abut one-to-one with the two second extension arms 1322, which can shorten the distance of the grounding return current formed between the connector 1 and the docking member 2, accelerate the transmission of the return current signal in the grounding terminal 13, improve resonance, and improve the shielding effect.

[0071] (5) Both the first terminal 131 and the second terminal 132 are formed by cutting metal plates. The first terminal 131 and the second terminal 132 are stacked face to face in the front-back direction. The first contact part 13a and the second contact part 13c are both formed on the cutting surface. The first contact part 13a and the second contact part 13c can be formed directly by cutting. It is easy to manufacture and facilitates mass production of the grounding terminal 13.

[0072] (6) The grounding conductor 14 includes a first base 141 and a first welding part 142. The first base 141 has a first through hole 1411 and two first branches 1412 formed on opposite sides of the first through hole 1411, which can increase the elasticity of the grounding terminal 13. One end of each of the two first branches 1412 is integrally connected to the first welding part 142. The first branch 1412 is elastic, and the first welding part 142 forms a gap with the conductive seat 11 in the direction perpendicular to the up and down direction, so that the first welding part 142 has room for movement. The first welding part 142 is used to weld to the first mating element 200 through a first solder 3. The first solder 3 is not welded and fixed together with the conductive seat 11. During the process of welding the connector 1 to the first mating element 200, the above structure can avoid the deformation of the conductive seat 11 and the first mating element 200, which will affect the connection between the first solder 3 and the first welding part 142 and the first mating element 200, and avoid the generation of solder cracks.

[0073] (7) The grounding groove 113 and the common ground groove 115 are arranged vertically and vertically, and the grounding groove 113 and the common ground groove 115 are not connected. Compared with the conductive seat 11 scheme where the grounding groove 113 and the common ground groove 115 are connected vertically, the non-connection between the grounding groove 113 and the common ground groove 115 allows the conductive seat 11 between the grounding groove 113 and the common ground groove 115 to form a whole shielding structure, which better improves the crosstalk problem of the connector 1 and improves the high frequency performance of the electrical connector assembly 100.

[0074] (8) A third contact portion 14a is formed on the outer side of each first branch 1412, thereby increasing the contact point formed between the grounding terminal 13 and the grounding groove 113. The two third contact portions 14a are arranged opposite each other and the distance between them is less than the maximum size of the first solder portion 142 in the direction (i.e., the left and right direction) in which the two third contact portions 14a are arranged opposite each other, thereby increasing the elasticity of the first branch 1412 in the up and down direction and further preventing solder cracking.

[0075] (9) The grounding groove 113 and the common ground groove 115 are arranged vertically and vertically, and the grounding groove 113 and the common ground groove 115 are connected vertically, which is convenient for manufacturing. The first base 141 is integrally connected to the first body 1311 or the second body 1321, which is convenient for integral stamping manufacturing of the grounding terminal 13 and the grounding conductor 14, and is convenient for mass production.

[0076] (10) The grounding terminal 13 further includes at least one fourth contact portion 13d, which is located between the first contact portion 13a and the third contact portion 14a in the vertical direction. The fourth contact portion 13d is housed in the corresponding grounding groove 113 and is in contact with the inner wall of the corresponding grounding groove 113, thereby increasing the number of contact points formed between the grounding terminal 13 and the grounding groove 113, increasing the number of grounding return paths, and also increasing the connection stability between the grounding terminal 13 and the grounding groove 113.

[0077] (11) The first body 1311 extends downward and does not exceed the second body 1321. The first through hole 1411 is formed in the second body 1321. In the stacking direction (i.e. front-back direction) of the first terminal 131 and the second terminal 132, the first through hole 1411 is at least partially exposed downward outside the first body 1311, so that the second body 1321 is not completely blocked by the first body 1311 in the front-back direction, and has better elasticity, thereby further preventing solder cracking.

[0078] (12) Both the conductive base 11 and the conductor 21 are formed by stacking multiple metal sheets in the vertical direction, which facilitates the manufacturing of the conductive base 11 and the conductor 21.

[0079] (13) The second base 231 of the mating terminal 23 has a second through hole 2311 and two second branches 2312 formed on opposite sides of the second through hole 2311, which increases the elasticity of the mating terminal 23. One end of each of the two second branches 2312 is integrally connected to the second welding part 23a, and the second welding part 23a forms a gap with the conductor 21 in the direction perpendicular to the up and down direction, so that the second welding part 23a has room to move. The second welding part 23a is used to weld to the second mating element 300 through a second solder 4, and the second solder 4 is not welded and fixed together with the conductor 21. During the process of welding the mating part 2 to the second mating element 300, the above structure can avoid the deformation of the conductor 21 and the second mating element 300 from affecting the connection between the second solder 4 and the second welding part 23a and the second mating element 300, and avoid the generation of solder cracks.

[0080] (14) At least one fifth contact portion 23b is formed on the outer side of each second branch 2312, which is in contact with the inner wall of the corresponding common hole 215. This increases the number of contact points between the mating terminal 23 and the common hole 215, increases the number of ground return paths, and also increases the connection stability between the mating terminal 23 and the common hole 215. The distance between the two fifth contact portions 23b is less than the maximum size of the second solder portion 23a in the direction in which the two fifth contact portions 23b are arranged opposite each other, which increases the elasticity of the second branch 2312 in the vertical direction and further prevents solder cracking.

[0081] (15) The common ground trench 115 is elliptical, and the first welding part 142 of the grounding conductor 14 is plate-shaped. Compared with the rectangular common ground trench 115, the elliptical or rhomboid common ground trench 115 ensures that the size of the common ground trench 115 is smaller, and at the same time makes it easier to make a gap between the first solder 3 and the common ground trench 115, so as to prevent the deformation of the conductive seat 11 from affecting the connection between the first solder 3 and the grounding conductor 14, thereby preventing solder cracking. The common ground hole 215 is elliptical, and the second welding part 23a of the mating terminal 23 is plate-shaped. Compared with the rectangular common ground hole 215, the elliptical or rhomboid common ground hole 215 ensures that the size of the common ground hole 215 is smaller, and at the same time makes it easier to make a gap between the second solder 4 and the common ground hole 215, so as to prevent the deformation of the conductor 21 from affecting the connection between the second solder 4 and the mating terminal 23, thereby preventing solder cracking.

[0082] (16) The size of the signal terminal 22 is different from that of the signal terminal 12, which is conducive to adjusting the impedance matching of the signal terminal 12 and the signal terminal 22, thereby improving the high-frequency performance of the electrical connector assembly 100. When the mating part 2 and the connecting part 1 are mated together, the two first clamping arms 122 clamp the fourth body 221 and the two second clamping arms 222 clamp the third body 121. The signal terminal 12 and the signal terminal 22 are connected by mutual clamping, which makes the connection between the signal terminal 12 and the signal terminal 22 more stable and can further increase the tightness of the first mating surface 111 and the second mating surface 211.

[0083] (17) The third body 121 of the signal terminal 12 is provided with a third through hole 1211 and two third branches 1212 formed on the left and right sides of the third through hole 1211, which can increase the elasticity of the signal terminal 12. The lower ends of the two third branches 1212 are integrally connected with the third welding part 12b, and the third welding part 12b forms a gap with the insulating member 15 in the direction perpendicular to the up and down direction, which increases the activity space of the third welding part 12b. The third welding part 12b is used to weld with the first mating element 200 through a first solder 3, and the first solder 3 is not welded and fixed together with the insulating member 15 and the conductive seat 11, so as to avoid the deformation of the insulating member 15 and the conductive seat 11 affecting the stable connection between the first solder 3 and the third welding part 12b, thereby avoiding a large relative positional offset between the first solder 3 and the third welding part 12b, and thus avoiding solder cracking.

[0084] (18) The fourth body 221 of the signal terminal 22 is provided with a fourth through hole 2211 and two fourth branches 2212 formed on opposite sides of the fourth through hole 2211, which increases the elasticity of the fourth body 221 of the signal terminal 22. One end of each of the two fourth branches 2212 is integrally connected to the fourth welding part 22b, and the fourth welding part 22b forms a gap with the insulator 24 and the conductor 21 in a direction perpendicular to the up and down direction, which increases the activity space of the fourth welding part 22b. The fourth welding part 22b is used to weld to the second mating element 300 through a second solder 4, and the second solder 4 is not welded and fixed together with the insulator 24 and the conductor 21, so as to avoid the deformation of the insulator 24 and the conductor 21 affecting the stable connection between the second solder 4 and the fourth welding part 22b, thereby avoiding a large relative positional offset between the second solder 4 and the fourth welding part 22b, and thus avoiding solder cracking.

[0085] (19) The second contact portion 13c protrudes outward toward the wall of the corresponding grounding hole 213. The wall of the grounding hole 213 is further recessed inward and has at least one snap-fit ​​groove 2131. The snap-fit ​​groove 2131 forms a fastening portion 2131a on the side near the second mating surface 211 in a direction perpendicular to the second mating surface 211. When the mating member 2 and the connector 1 are mated together, the second contact portion 13c and the fastening portion 2131a of the corresponding snap-fit ​​groove 2131 are interference-fitted in the vertical direction, and the two form an interlocking mechanism, so that the first mating surface 111 and the second mating surface 211 are tightly fitted together or the gap between them does not exceed 0.12mm, thereby improving the shielding effect of the electrical connector assembly 100.

[0086] (20) Multiple signal receiving slots 114 are arranged in multiple rows in the front-back direction. Grounding terminals 13 are distributed between two adjacent rows of signal receiving slots 114 to prevent crosstalk between adjacent rows of signal terminals 12. A connecting line L1 is formed between two adjacent signal terminals 12 in any two adjacent signal receiving slots 114. The grounding terminal 13 is plate-shaped. The plate surface of the grounding terminal 13 located between two adjacent signal receiving slots 114 intersects with the connecting line L1, which can better shield the signal, prevent crosstalk, and improve the high-frequency performance of the electrical connector assembly 100.

[0087] 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 assembly, characterized in that, include: A connector, comprising: A conductive base is provided with multiple signal receiving slots and multiple grounding slots; Multiple signal terminals are housed in multiple signal receiving slots, and the signal terminals are electrically isolated from the conductive base by an insulating element. A plurality of grounding terminals are housed in a plurality of grounding grooves. Each grounding terminal includes a first terminal and a second terminal stacked on top of each other in a first direction. The first terminal includes a first body and at least one first extension arm. The first extension arm is connected to one end of the first body and extends in a direction away from the first body. The first extension arm has a first contact portion and an abutment portion. In the extension direction of the first extension arm, the abutment portion is disposed away from the first body than the first contact portion. The first contact portion is housed in a corresponding grounding groove and is in contact with and connected to the inner wall of the corresponding grounding groove. The first contact portion is disposed in a second direction on the side of the first extension arm facing the inner wall of the corresponding grounding groove. The second direction is perpendicular to the first direction. The second terminal includes a second body and at least one second extension arm. The second body is fixedly connected to the first body. The second extension arm is connected to one end of the second body and extends in a direction away from the second body. The second extension arm has a second contact portion. The abutment portion abuts against the second extension arm in the first direction at a position closer to the second body than the second contact portion in the extension direction of the second extension arm. A mating component for mating with a connector includes: a conductor and a plurality of signal terminals, the conductor having a plurality of signal receiving holes and a plurality of grounding holes, at least one of the signal terminals being disposed in the signal receiving holes, and the signal terminals being electrically isolated from the conductor by an insulator; When the docking part and the connecting part are docked together, the signal terminal and the signal terminal are docked to form an electrical connection. The second contact part is inserted into one of the grounding holes and makes contact with the corresponding grounding hole to conduct electricity. The second contact part is provided in the second direction on the side of the inner wall of the second extension arm facing the corresponding grounding hole.

2. The electrical connector assembly as claimed in claim 1, characterized in that: The first extension arm is a cantilever structure, and the abutment portion is located at the free end of the first extension arm.

3. The electrical connector assembly as claimed in claim 1, characterized in that: The first extension arm includes a first segment and a second segment. The first segment is inclined in a first direction away from the first body in a first direction, and the second segment is inclined in a first direction towards the second extension arm from the end of the first segment away from the first body in a first direction.

4. The electrical connector assembly as claimed in any one of claims 1 to 3, characterized in that: The first terminal is provided with two first extension arms, which are spaced apart in a second direction. Each first extension arm is provided with an abutment portion and a first contact portion. The second terminal is provided with two second extension arms, which are spaced apart in a second direction. Each second extension arm is provided with a second contact portion. In a first direction, the two second extension arms are arranged in a one-to-one correspondence with the two first extension arms. The two abutment portions of the two first extension arms abut against the two second extension arms in a one-to-one correspondence.

5. The electrical connector assembly as claimed in claim 1, characterized in that: Both the first terminal and the second terminal are formed from metal sheet material. The first terminal and the second terminal are stacked face to face in a first direction. The first contact portion and the second contact portion are both formed on the blanking surface.

6. The electrical connector assembly as claimed in claim 1, characterized in that: The connector further includes multiple grounding conductors. The conductive base includes multiple common grounding grooves, a first mating surface, and a first mounting surface. The first mating surface faces the docking component, and the first mounting surface faces a first docking element. The grounding grooves penetrate the first mating surface, and the common grounding grooves penetrate the first mounting surface. The multiple common grounding grooves accommodate multiple grounding conductors. Each grounding conductor includes a first base and a welding portion. The first base has a first through hole and two first branches formed on opposite sides of the first through hole. One end of each of the two first branches is integrally connected to the first welding portion. The first branches are elastic, and a gap is formed between the first welding portion and the conductive base around its perimeter. The first welding portion is used to weld to the first docking element with a first solder, but the first solder is not welded and fixed together with the conductive base.

7. The electrical connector assembly as claimed in claim 6, characterized in that: Both the grounding trench and the common grounding trench are blind trenches, and the grounding trench and the common grounding trench are not connected.

8. The electrical connector assembly as claimed in claim 6, characterized in that: Each of the first branches has a third contact portion formed on the outer side away from the first through hole. The third contact portion is received in the corresponding common trench and is in contact with the inner wall of the corresponding common trench. The two third contact portions are arranged opposite each other and the distance between them is greater than the maximum size of the first weld portion in the direction in which the two third contact portions are arranged opposite each other.

9. The electrical connector assembly as claimed in claim 6, characterized in that: The first mating surface and the first mounting surface are arranged opposite each other along a third direction, which is perpendicular to the first direction and the second direction. The plurality of grounding grooves and the plurality of common grounding grooves are arranged one-to-one along the third direction, and each grounding groove is interconnected with its corresponding common grounding groove. For the grounding terminal and the grounding conductor that are respectively housed in the interconnected grounding groove and the common grounding groove, one of the first body and the second body is integrally connected to the corresponding first base.

10. The electrical connector assembly as claimed in claim 9, characterized in that: The grounding terminal further includes at least one fourth contact portion, which is located between the first contact portion and the third contact portion in a third direction. The fourth contact portion is received in the corresponding grounding groove and is in contact with the inner wall of the corresponding grounding groove.

11. The electrical connector assembly as claimed in claim 9, characterized in that: The first body extends along a third direction and does not exceed the second body. The first through hole is formed in the second body. Viewed in a first direction, the first through hole extends at least partially beyond the first body along a third direction in a direction away from the second extension arm.

12. The electrical connector assembly as claimed in claim 1, characterized in that: Both the conductive base and the conductive body are formed by stacking multiple metal sheets in a third-direction upward direction.

13. The electrical connector assembly as claimed in claim 1, characterized in that: The conductor includes multiple ground holes, a second mating surface, and a second mounting surface. The second mating surface faces the connector, and the second mounting surface faces a second mating element. The grounding hole penetrates the second mating surface, and the ground hole penetrates the second mounting surface. The connector also includes multiple mating terminals, which are housed within the multiple ground holes. Each mating terminal includes a second base and a second welding portion integrally connected to the second base. The second welding portion is exposed on the second mounting surface. The second base has a second through hole and two second branches formed on opposite sides of the second through hole. One end of each of the two second branches is integrally connected to the second welding portion. The second branches are elastic, and a gap is formed between the second welding portion and the conductor around its perimeter. The second welding portion is used to weld to the second mating element using a second solder, but the second solder is not welded to the conductor for fixation.

14. The electrical connector assembly as claimed in claim 13, characterized in that: Both the grounding hole and the common grounding hole are blind holes, and the grounding hole and the common grounding hole are not connected.

15. The electrical connector assembly as claimed in claim 13, characterized in that: Each of the second branches has a fifth contact portion formed on the outer side away from the second through hole. The fifth contact portion is received in the corresponding common hole and is in contact with the inner wall of the corresponding common hole. The two fifth contact portions are arranged opposite each other and the distance between them is greater than the maximum size of the second weld portion in the direction in which the two fifth contact portions are arranged opposite each other.

16. The electrical connector assembly as claimed in claim 1, characterized in that: The connector further includes multiple grounding conductors, and the conductive base further includes multiple common grounding grooves, a first mating surface, and a first mounting surface. The first mating surface faces the connector, and the first mounting surface faces a first mating element. The common grounding grooves extend through the first mounting surface. The multiple grounding conductors are housed within the multiple common grounding grooves. The grounding conductors are soldered to a first mating element using a first solder. Viewed perpendicular to the first mounting surface, the common grounding grooves are elliptical, and the grounding conductors are rectangular. The first solder falls into the corresponding area of ​​the common grounding groove, with a gap between it and the corresponding common grounding groove. The connector further includes multiple mating terminals, and the conductor further includes multiple ground holes, a second mating surface, and a second mounting surface. The second mating surface faces the connector, and the second mounting surface faces a second mating element. The grounding hole penetrates the second mating surface. The multiple mating terminals are housed in the multiple ground holes. The mating terminals are soldered to the second mating element by a second solder. When viewed perpendicular to the second mounting surface, the ground holes are elliptical, and the mating terminals are rectangular. The second solder falls into the area of ​​the corresponding ground hole and has a gap with the corresponding ground hole.

17. The electrical connector assembly as claimed in claim 1, characterized in that: Each of the signal terminals includes a third body and two first clamping arms integrally connected to the third body. Each clamping arm is provided with at least one first conductive portion. The third body is housed in the corresponding signal receiving slot and is electrically isolated from the conductive base through the insulating member. The first conductive portion exposes the corresponding signal receiving slot. The size of the signal terminal is different from that of the signal terminal. Each signal terminal has a fourth body and two second clamping arms integrally connected to the fourth body. Each second clamping arm is provided with at least one second conductive part. The fourth body is received in the corresponding signal receiving hole and is electrically isolated from the conductor through the insulator. The second conductive part exposes the corresponding signal receiving hole. When the docking member and the connecting member are docked together, the two first clamping arms clamp the fourth body, and the first guide part is in lateral contact with the fourth body. The two second clamping arms clamp the third body, and the second guide part is in lateral contact with the third body.

18. The electrical connector assembly as claimed in claim 1, characterized in that: The conductive base includes a first mating surface and a first mounting surface. The first mating surface faces the mating member, and the first mounting surface faces a first mating element. The signal terminal further includes a third body and a third welding portion. The third welding portion exposes the first mounting surface. The third body has a third through hole and two third branches formed on opposite sides of the third through hole. One end of each of the two third branches is integrally connected to the third welding portion, and a gap is formed between the third welding portion and the insulating member around its perimeter. The third welding portion is used to weld to the first mating element using a first solder. The conductor includes a second mating surface and a second mounting surface. The second mating surface faces the connector, and the second mounting surface faces a second mating element. The signal terminal also includes a fourth body and a fourth soldering portion. The fourth soldering portion exposes the second mounting surface. The fourth body has a fourth through hole and two fourth branches formed on opposite sides of the fourth through hole. One end of each of the two fourth branches is integrally connected to the fourth soldering portion, and a gap is formed between the fourth soldering portion and the insulator around its perimeter. The fourth soldering portion is used to solder to the second mating element with a second solder.

19. The electrical connector assembly as claimed in claim 1, characterized in that: The conductive base includes a first mating surface facing the conductor in a third direction, the third direction being perpendicular to the first and second directions. The conductor includes a second mating surface facing the conductive base in a third direction. The second contact portion protrudes outward toward the wall of the corresponding grounding hole. The wall of the grounding hole is further recessed inward with at least one snap-fit ​​groove. When the mating member and the connecting member are mated together in a third direction, the second contact portion and the corresponding snap-fit ​​groove are interference-fitted in the third direction, forming an interlocking mechanism, so that the first mating surface and the second mating surface are tightly fitted together or the gap between them does not exceed 0.12mm.

20. The electrical connector assembly as claimed in claim 1, characterized in that: From a third-party perspective, the distance between the first contact portion and the second contact portion is less than or equal to 0.7 mm.

21. The electrical connector assembly as claimed in claim 1, characterized in that: The signal receiving slots are arranged in multiple rows, with adjacent rows of signal receiving slots staggered. Multiple grounding terminals are distributed between adjacent rows of signal receiving slots. A connecting line is formed between two adjacent signal terminals in adjacent rows of signal receiving slots. The grounding terminal is plate-shaped, and the plate surface of one of the grounding terminals intersects with the connecting line.

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