Electric connector

Abstract

The invention discloses an electric connector which is characterized in that the electric connector comprises a shell which is concavely provided with a butt joint groove in the front-back direction, and the butt joint groove is used for being in butt joint with a butt joint element in the front-back direction; the signal terminal comprises a signal elastic arm which extends forwards, the inner side of the signal elastic arm is provided with a first contact part which is exposed out of the butt joint groove, and the first contact part is used for being in contact with the butt joint element; the first shielding piece comprises a main body part and a plurality of grounding fingers which are bent and extend from the main body part to the interior of the butt joint groove, the grounding fingers are located in front of the signal elastic arm, the projection of the grounding fingers in the front-back direction is overlapped with the projection of the signal elastic arm in the front-back direction, and each grounding finger comprises three second contact parts; the second contact part is in electrical contact with the butt joint element, and the second contact part and the first contact part are staggered in the front-back direction. The shielding effect of the signal terminal is enhanced by arranging the grounding finger on the first shielding piece.

Description

[Technical field]

[0001] The present invention relates to an electrical connector, in particular to an electrical connector for high-frequency signal transmission. [Background technology]

[0002] Electrical connectors that transmit high-frequency signals usually include multiple signal terminals. In order to reduce the crosstalk between signal terminals and the interference of external signals on differential signal terminal pairs, shielding components are often installed in the electrical connectors. However, with the improvement of server performance, the requirements for high-frequency signal transmission performance of connectors are getting higher and higher. The traditional shielding component structure can no longer meet the requirements. How to enhance the shielding effect of signal terminals has become an urgent problem to be solved by people in this field. [Summary of the invention]

[0003] The purpose of the invention is to provide an electrical connector, which enhances the shielding effect of the signal terminal by arranging a grounding finger on the first shielding component, the grounding finger is located in front of the signal flare arm, and the projection of the grounding finger along the front-to-back direction overlaps with the projection of the signal flare arm along the front-to-back direction.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] An electrical connector, characterized in that it includes: a shell, the shell is recessed with a docking groove along the front-to-back direction, the docking groove is used to dock with a docking element along the front-to-back direction; a plurality of terminals, which are accommodated in the shell, the terminals are arranged in a row along the left-to-right direction, the terminals include signal terminals and ground terminals, two adjacent signal terminals form a differential signal terminal pair, at least one ground terminal is located between the two adjacent differential signal terminal pairs, the signal terminal includes a signal flare arm extending forward, the inner side of the signal flare arm is provided with a first contact portion exposed in the docking groove, the first contact portion is used to contact the docking element; a first shielding member, the first shielding member includes a main body, a plurality of grounding fingers bent and extended from the main body toward the docking groove, the grounding fingers are located in front of the signal flare arm, and the projection of the grounding fingers along the front-to-back direction overlaps with the projection of the signal flare arm along the front-to-back direction, each grounding finger includes at least two second contact portions, the second contact portions are electrically in contact with the docking element, and the second contact portions are misaligned with the first contact portions along the front-to-back direction.

[0006] Furthermore, the first shielding component includes a plurality of grounding spring arms that are bent and extended from the main body toward the docking slot, and the grounding spring arms are abutted against the grounding terminals. The up and down directions are defined as directions perpendicular to the front-to-back directions and the left-to-right directions. Along the up and down directions, the projection of the grounding spring arms overlaps with the projection of the grounding terminals, and along the left-to-right directions, the projection of the grounding spring arms overlaps with the signal spring arms. A third contact portion is provided on the grounding spring arms, and the third contact portion is exposed in the docking slot for contacting the docking element.

[0007] Furthermore, the first shielding member includes a connecting bridge, the connecting bridge is located behind the first contact portion, and the connecting bridge integrally connects a plurality of grounding spring arms.

[0008] Furthermore, a first arc-shaped portion is provided at the end of the grounding elastic arm, the first arc-shaped portion has a lap portion, the lap portion overlaps the grounding terminal, and the grounding terminal is provided with a second arc-shaped portion corresponding to the first arc-shaped portion. When the docking element docks with the docking groove, the first arc-shaped portion slides on the second arc-shaped portion.

[0009] Furthermore, the signal flare arm includes an inner side of the flare arm close to the docking slot and an outer side of the flare arm away from the docking slot. A flexible insulating block is fixed on the outer side of the flare arm. The flexible insulating block covers and fixes the end of the signal flare arm. The grounding terminal is bent and extended at one end away from the docking slot to have an elastic abutment arm, and the elastic abutment arm abuts against the flexible insulating block.

[0010] Furthermore, there are multiple flexible insulating blocks, each of which covers and fixes the ends of two adjacent signal flare arms, and each of which includes two blocked portions and a separating groove. Each of the blocked portions is arranged on the outside of the flare arm of a signal terminal, and the separating groove is located between two adjacent signal flare arms to separate the two signal flare arms. The separating groove is also located between the two blocked portions to separate the two blocked portions, and the portion of the flexible insulating block located at the front end of the separating groove connects the two blocked portions.

[0011] Furthermore, there are two ground terminals between two adjacent differential signal terminal pairs, each of the elastic abutting arms abuts against a blocked portion, and the vertical direction perpendicular to the front-to-back direction and the left-to-right direction is defined as the up-down direction. Along the up-down direction, the elastic abutting arm overlaps with the projection of the first contact portion.

[0012] Furthermore, the flexible insulating block includes a guide portion, which is located in front of the first contact portion and covers the end of the flare arm. The front end of the guide portion has a step portion, and the grounding finger abuts against the step portion.

[0013] Furthermore, the grounding finger includes three grounding strips, each of the grounding strips is provided with a second contact portion, and the three grounding strips are connected at the rear by a horizontal strip.

[0014] Furthermore, the main body has a shielding plate opposite to the grounding finger, and the shielding plate has a plurality of first fixed elastic arms extending backward and a plurality of first slots located between two adjacent first fixed elastic arms. A second shielding member is provided behind the shielding plate, and the second shielding member includes a plurality of second slots and a plurality of second fixed elastic arms extending forward. The grounding terminal is protruding with a plurality of first blocks and second blocks, the first blocks cooperate with the first slots, and the second blocks cooperate with the second slots. The first fixed elastic arm abuts against the second shielding member, and the second fixed elastic arm abuts against the shielding plate, and the first fixed elastic arm and the second fixed elastic arm are alternately arranged in the left and right directions.

[0015] Furthermore, the signal terminal includes a signal terminal, the grounding terminal includes a grounding terminal, a second shielding member and a third shielding member are provided on the upper and lower sides of the grounding terminal, a shielding space is surrounded by two adjacent grounding terminals and the second shielding member and the third shielding member, the signal terminal is located in the shielding space, at least one cable enters the shielding space, the signal line in the cable is connected to the signal terminal, a conductive member is provided in the shielding space, the second shielding member, the third shielding member and the grounding terminal are electrically connected to the grounding component in the cable through the conductive member.

[0016] Compared with the prior art, the electrical connector provided by the present invention has the following beneficial effects:

[0017] The grounding finger is located in front of the flare arm, and the projection of the grounding finger in the front-to-back direction overlaps with the projection of the flare arm in the front-to-back direction, which enables the grounding finger to shield the signal terminal in the front-to-back direction and enhance the shielding effect of the signal terminal. On this basis, at least two second contact portions are provided on the grounding finger to increase the return path, so that the shielding effect of the grounding finger is better. The signal pad on the docking element will enter the docking groove in the front-to-back direction and contact the first contact portion. The misalignment of the first contact portion and the second contact portion in this direction can avoid scratching between the signal pad and the second contact portion, thereby ensuring the life of the signal pad.

Brief Description of the Drawings

[0018] Figure 1 is a three-dimensional schematic diagram of the electrical connector of the present invention;

[0019] Figure 2 is a three-dimensional exploded view of the electrical connector of the present invention;

[0020] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0021] Figure 4 This is a three-dimensional exploded view of the electrical connector of the present invention after removing the housing;

[0022] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0023] Figure 6 for Figure 1 sectional view of .

[0024] Description of the accompanying drawings for the specific implementation:

[0025]

[0026] [Specific implementation method]

[0027] In order to facilitate a better understanding of the purpose, structure, characteristics and effects of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0028] The electrical connector 100 of the present invention defines the left-right direction as the X-axis, the left direction as the positive direction of the X-axis, the front-back direction as the Y-axis, the forward direction as the positive direction of the Y-axis, the up-down direction as the Z-axis, the upward direction as the positive direction of the Z-axis, and the horizontal direction is perpendicular to the up-down direction.

[0029] like Figure 1 and Figure 2 As shown, the present invention provides an electrical connector 100, comprising a housing 1, an insulating member 2, a plurality of terminals and a shielding member. The housing 1 is provided with a docking groove 11 along the front-to-back direction, and the docking groove 11 is used to dock with a docking element. Specifically, the docking element is a board or a docking connector with a plug-in portion, and the board or the plug-in portion is inserted into the docking groove 11 along the front-to-back direction.

[0030] like Figure 4 As shown, a plurality of terminals are arranged in a row along the left-right direction, and the terminals include a signal terminal 3 and a ground terminal 4. Two adjacent signal terminals 3 form a differential signal terminal 3 pair, and at least one ground terminal 4 is located between two adjacent differential signal terminal 3 pairs. In this embodiment, two ground terminals 4 are located between two adjacent differential signal terminal 3 pairs, and the two ground terminals 4 are abutted against each other. In other embodiments, only one ground terminal 4 may be located between two adjacent differential signal terminal 3 pairs.

[0031] like Figure 4 and Figure 6As shown, there are two rows of signal terminals 3, and the two rows of signal terminals 3 are respectively located on the upper and lower sides of the docking slot 11. The signal terminals 3 include a signal body 31, a signal spring arm 32 extending forward from the signal body 31, and a signal wiring portion 33 extending backward from the signal body 31. The side close to the docking slot 11 is defined as the inner side, and the side away from the docking slot 11 is defined as the outer side. The signal spring arm 32 includes an inner side 321 and an outer side 322 of the spring arm relative to each other. The inner side 321 of the spring arm is provided with a first contact portion 323 exposed in the docking slot 11, and the first contact portion 323 is used to contact the signal pad on the docking element.

[0032] The insulating member 2 is made of a flexible material, and the specific material can be PA66 plastic with a low glass fiber content or other flexible plastics. The insulating member 2 and the signal terminal 3 are integrally injection molded. The insulating member 2 has a plurality of insulating blocks 21 extending forward in one piece. The insulating blocks 21 are also made of a flexible material. The insulating blocks 21 are elastic and cover the signal flare arm 32. Figure 5 and Figure 6 As shown, each insulating block 21 includes a blocked portion 211, a guide portion 212, a step portion 213 and a separation groove 214. An insulating block 21 has two blocked portions 211. Each blocked portion 211 corresponds to a flare arm 32 and is disposed on the outer side 322 of the flare arm. The separation groove 214 is located between two adjacent flare arms 32 to separate the two flare arms 32. The separation groove 214 is also located between the two blocked portions 211 to separate the two blocked portions 211. The portion of the insulating block 21 located at the front end of the separation groove 214 connects the two blocked portions 211. The guide portion 212 is located in front of the first contact portion 323 and covers and fixes the end of the flare arm 32. When the docking element is inserted into the docking groove 11, it can guide the docking element to contact the first contact portion 323. In other embodiments, an insulating block 21 may have only one blocked portion 211, that is, an insulating block 21 only covers one signal terminal 3, and the insulating block 21 may not be integrally connected to the insulating member 2, and may not be made of a flexible material. It is only necessary that when the docking element contacts the first contact portion 323, the signal spring arm 32 can drive the insulating block 21 to move together.

[0033] like Figure 4As shown, the grounding terminal 4 includes a grounding body 41, an extension portion 42 extending forward from the grounding body 41, and a grounding connection portion 43 extending backward from the grounding body 41. The extension portion 42 is bent and extended at one end away from the docking groove 11 to have an elastic abutment arm 44, and the elastic abutment arm 44 abuts against the blocked portion 211, that is, the elastic abutment arm 44 gives the blocked portion 211 a force pointing from the outside to the inside. The ground terminal 4 and the signal terminal 3 are both plate-shaped, the plate surface of the ground terminal 4 is perpendicular to the plate surface of the signal terminal 3, the plate surface of the extension portion 42 is perpendicular to the plate surface of the signal flare arm 32, the elastic abutment arm 44 is vertically bent from the outer side of the extension portion 42, the plate surface of the elastic abutment arm 44 is basically parallel to the plate surface of the signal flare arm 32, and the projection of the elastic abutment arm 44 and the first contact portion 323 overlaps in the up and down directions. This design allows the elastic abutment arm 44 to shield the signal flare arm 32 more in the up and down directions, and allows the elastic abutment arm 44 to better transmit force to the position of the first contact portion 323, so that the first contact portion 323 is in stable contact with the docking element.

[0034] like Figure 3 and Figure 4 As shown, the shielding member includes a first shielding member 5, a second shielding member 6 and a third shielding member 7. The first shielding member 5 includes a main body 51, a plurality of grounding fingers 52 and a plurality of grounding spring arms 53 that are bent and extended from the main body 51 toward the docking slot 11, the main body 51 includes a shielding plate 511 located on the outside and a bending portion 514 connecting the grounding finger 52 and the shielding plate 511, the grounding finger 52 and the bending portion 514 are located in front of the flare arm 32, and the projection of the grounding finger 52 along the front-to-back direction overlaps with the projection of the flare arm 32 along the front-to-back direction, each grounding finger 52 includes three grounding strips 521, and the three grounding strips 521 are connected at the rear by a horizontal strip 522, so that the grounding strips 521 have elasticity, and the three can form a whole, and the distance between them will not change, each grounding strip 521 is provided with a second contact portion 5211, the second contact portion 5211 is in electrical contact with the docking element, and the second contact portion 5211 is misaligned with the first contact portion 323 along the front-to-back direction. The grounding finger 52 abuts against the step portion 213. After the docking element is docked with the docking slot 11, because the step portion 213 is made of a flexible material, the grounding finger 52 drives the step portion 213 to move relative to the first contact portion 323. In some special cases, even if part of the grounding finger 52 does not abut against the step portion 213, the step portion 213 can limit the grounding finger 52 to prevent the grounding finger 52 from being excessively deformed when the second contact portion 5211 abuts against the docking element.

[0035] The bent portion 514 and the grounding spring arm 53 on the grounding finger 52 are both in contact with the extension portion 42 of the grounding terminal 4, wherein the bent portion 514 is in contact with the front end of the extension portion 42, and the grounding spring arm 53 is in contact with the inner side of the extension portion 42, and the projection of the grounding spring arm 53 overlaps with the projection of the extension portion 42 in the up-down direction, and the projection of the grounding spring arm 53 overlaps with the projection of the signal spring arm 32 in the left-right direction. The grounding spring arm 53 is provided with a third contact portion 531, which is exposed in the docking groove 11 to contact the docking element, and the grounding spring arm 53 can cooperate with the extension portion 42 to better shield the signal terminal 3 in the left-right direction. The multiple grounding spring arms 53 are integrally connected by the connecting bridge 54, so that the multiple grounding spring arms 53 have the same potential, and the connecting bridge 54 is located behind the first contact portion 323, and the connecting bridge 54 can enhance the shielding effect of the first contact portion 323 in the front-back direction together with the bent portion 514.

[0036] like Figure 6 As shown, a first arc-shaped portion 532 is provided at the end of the grounding elastic arm 53, and the first arc-shaped portion 532 has a lap portion 5321, and the lap portion 5321 overlaps the grounding terminal 4. The extension portion 42 is provided with a second arc-shaped portion 421 corresponding to the first arc-shaped portion 532. When the docking element docks with the docking groove 11, the first arc-shaped portion 532 slides on the second arc-shaped portion 421.

[0037] like Figure 4 As shown, the shielding plate 511 extends backward with multiple first fixed elastic arms 512 and multiple first slots 513 located between two adjacent first fixed elastic arms 512, the second shielding member 6 is located behind the shielding plate 511, the second shielding member 6 includes multiple second slots 62 and multiple second fixed elastic arms 61 extending forward, the grounding terminal 4 is protruding with multiple first blocks 45 and second blocks 46, the first blocks 45 cooperate with the first slots 513, the second blocks 46 cooperate with the second slots 62, the first fixed elastic arms 512 abut against the second shielding member 6, the second fixed elastic arms 61 abut against the shielding plate 511, and the first fixed elastic arms 512 and the second fixed elastic arms 61 are alternately arranged in the left and right directions.

[0038] like Figure 4 and Figure 6 The second shielding component 6 and the third shielding component 7 are respectively located on the upper and lower sides of the grounding wiring part 43, and a shielding space S is formed between two adjacent grounding terminals 4 and the second shielding component 6 and the third shielding component 7. The signal wiring part 33 is located in the shielding space S, and at least one cable 9 enters the shielding space S. The signal line 91 in the cable 9 is connected to the signal wiring part 33. A conductive component 8 is provided in the shielding space S, and the second shielding component 6, the third shielding component 7 and the grounding wiring part 43 are electrically connected to a grounding component 92 (such as a grounding wire or a shielding layer) in the cable 9 through the conductive component 8.

[0039] The specific conductive member 8 is a conductive material such as conductive silver glue or solder paste. When making the connector, the third shielding member 7 and the grounding terminal 4 can be assembled first, and then the conductive silver glue can be applied on them by brushing or other methods, and then the cable 9 is placed in the shielding space S, and the signal line 91 is soldered to the signal wiring part 33, and finally the second shielding member 6 is assembled. The second shielding member 6 is also provided with a filling hole 63 at the position corresponding to the shielding space S. The conductive silver glue can also fill the gap between the second shielding member 6, the third shielding member 7, the grounding terminal 4 and the grounding member 92 through the filling hole 63. After the conductive member 8 is cured, the conductive member 8 can stably connect the second shielding member 6, the third shielding member 7 and the grounding wiring part 43 to the grounding member 92 in the cable 9. Of course, in other embodiments, the conductive member 8 can be a conductive connector made of metal materials such as copper and iron, or the conductive member 8 can be omitted, so that the grounding wiring part 43, the second shielding member 6, and the third shielding member 7 are directly connected to the grounding member 92.

[0040] In summary, the present invention has the following effects:

[0041] 1. The grounding finger 52 is located in front of the flare arm 32, and the projection of the grounding finger 52 along the front-to-back direction overlaps with the projection of the flare arm 32 along the front-to-back direction, so that the grounding finger 52 can shield the front of the signal terminal 3 and enhance the shielding effect of the signal terminal 3. On this basis, at least two second contact portions 5211 are provided on the grounding finger 52 to increase the return path, so that the shielding effect of the grounding finger 52 is better. The signal pad on the docking component will enter the docking groove 11 along the front-to-back direction and contact the first contact portion 323. The misalignment of the first contact portion 323 and the second contact portion 5211 in this direction can avoid scratching between the signal pad and the second contact portion 5211, thereby ensuring the life of the signal pad.

[0042] 2. By setting the insulating block 21 so that the insulating block 21 covers the end of the fixed flare arm 32, the transition part of the end of the flare arm 32 can be shortened, and the first contact part 323 is closer to the end of the flare arm 32, thereby shortening the length of the stub and improving the high-frequency performance. On this basis, the elastic abutment arm 44 abuts against the blocked part 211, so that even if the flare arm 32 has no transition part, its first contact part 323 can stably contact the docking element, and the elastic abutment arm 44 is formed by bending and extending the ground terminal 4, and can also shield the signal terminal 3 in the upper and lower directions to reduce crosstalk.

[0043] 3. The two adjacent flare arms 32 and the two blocked portions 211 are separated by the separation groove 214, so that the two flare arms 32 are independent of each other. When the first contact portion 323 contacts the docking element, the first first contact portion 323 that contacts the docking element first will not affect the other adjacent first contact portion 323, and then the first contact portion 323 that contacts the docking element later can contact the docking element normally, so that all the signal terminals 3 on the electrical connector 100 can be stably contacted with the docking element as a whole. The part of the insulating block 21 located at the front end of the separation groove 214 connects the two blocked portions 211, which can enhance the strength of the insulating block 21 and facilitate manufacturing and assembly.

[0044] Along the up-down direction, the projection of the elastic abutting arm 44 overlaps with the projection of the first contact portion 323 , so that the elastic force of the elastic abutting arm 44 can be transmitted to the first contact portion 323 , so that the first contact portion 323 can better abut against the docking element.

[0045] 4. The insulating block 21 is a part of the flexible insulating member 2, and the flexible insulating member 2 is integrally injection molded with the plurality of signal terminals 3. That is to say, the insulating blocks 21 are integrally connected to each other and are integrally injection molded with the signal flare arm 32. This structural design is convenient for manufacturers to manufacture and assemble. In addition, the insulating block 21 is elastic, and it is easier for the signal flare arm 32 to move the insulating block 21 together, thereby reducing the insertion force of the docking component and making it easier for the docking component to be inserted into the docking slot 11.

[0046] 5. By providing a lap portion 5321 on the first arc portion 532 at the end of the grounding elastic arm 53 to overlap the grounding terminal 4, the induced current formed at the end of the grounding elastic arm 53 can be diverted to avoid the formation of a new interference source at the end of the grounding elastic arm 53. At the same time, through the cooperation of the first arc portion 532 and the second arc portion 421, when the third contact portion 531 contacts the docking element, the end of the grounding elastic arm 53 can slide smoothly, thereby allowing the grounding elastic arm 53 to deform smoothly and reducing the insertion force of the docking element.

[0047] 6. The first fixed elastic arm 512 and the second fixed elastic arm 61 are arranged alternately, the first fixed elastic arm 512 abuts against the second shielding member 6, and the second fixed elastic arm 61 abuts against the first shielding member 5, so that the first shielding member 5 and the second shielding member 6 are closely connected to each other and are not easy to loosen, and the first fixed elastic arm 512 and the second fixed elastic arm 61 can fill the gaps on the second shielding member 6 and the first shielding member 5 respectively, so that both have a better shielding effect on the signal terminal 3.

[0048] 7. The signal connection part 33 is shielded by utilizing the shielding space S enclosed by two adjacent grounding terminals 4 and the second shielding component 6 and the third shielding component 7, and the grounding connection part 43, the second shielding component 6, the third shielding component 7 and the shielding layer of the cable 9 are electrically connected through the conductive component 8 to further improve the shielding effect and reduce the crosstalk between different signal connection parts 33.

[0049] 8. After the docking element is docked with the docking groove 11, the second contact portion 5211 abuts against the docking element, and the grounding finger 52 abuts against the step portion 213, and the force given to the grounding finger 52 by the step portion 213 can be used to make the second contact portion 5211 abut against the docking element more stably. In addition, the abutment of the insulating step portion 213 with the grounding finger 52 can prevent the grounding finger 52 from contacting the signal terminal 3 and causing a short circuit; the insulating member 2 is made of a flexible material, and when the grounding finger 52 abuts against the step portion 213, the step portion 213 can be displaced relative to the first contact portion 323, so that the abutment of the grounding finger 52 against the step portion 213 will not have too much influence on the first contact portion 323, that is, when the step portion 213 is deformed, the first contact portion 323 can still stably abut against the docking element.

[0050] The above detailed description is only an explanation of the preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. An electrical connector, characterized in that: include: A housing, wherein the housing is provided with a docking groove along the front-to-back direction, and the docking groove is used to dock with a docking element along the front-to-back direction; A plurality of terminals are accommodated in the housing, the terminals are arranged in a row along the left-right direction, the terminals include signal terminals and ground terminals, two adjacent signal terminals form a differential signal terminal pair, at least one ground terminal is located between two adjacent differential signal terminal pairs, the signal terminal includes a signal flare arm extending forward, the inner side of the signal flare arm is provided with a first contact portion exposed in the docking groove, and the first contact portion is used to contact the docking element; A first shielding member, the first shielding member includes a main body, and a plurality of grounding fingers bent and extended from the main body toward the docking groove, the grounding fingers are located in front of the flare arm, and the projection of the grounding fingers along the front-to-back direction overlaps with the projection of the flare arm along the front-to-back direction, each grounding finger includes at least two second contact portions, the second contact portions are in electrical contact with the docking element, and the second contact portions are offset from the first contact portions along the front-to-back direction.

2. The electrical connector according to claim 1, wherein: The first shielding component includes a plurality of grounding spring arms that are bent and extended from the main body toward the docking slot, and the grounding spring arms are in contact with the grounding terminals. The up-down direction is defined as perpendicular to the front-to-back direction and the left-to-right direction. Along the up-down direction, the projection of the grounding spring arms overlaps with the projection of the grounding terminal. Along the left-to-right direction, the projection of the grounding spring arms overlaps with the signal spring arms. A third contact portion is provided on the grounding spring arms, and the third contact portion is exposed in the docking slot for contacting the docking element.

3. The electrical connector according to claim 2, wherein: The first shielding member includes a connecting bridge, the connecting bridge is located behind the first contact portion, and the connecting bridge integrally connects a plurality of grounding spring arms.

4. The electrical connector according to claim 2, wherein: A first arc-shaped portion is provided at the end of the grounding elastic arm, and the first arc-shaped portion has a lap portion, and the lap portion overlaps the grounding terminal. The grounding terminal is provided with a second arc-shaped portion corresponding to the first arc-shaped portion. When the docking element docks with the docking groove, the first arc-shaped portion slides on the second arc-shaped portion.

5. The electrical connector according to claim 1, wherein: The flare arm includes an inner side of the flare arm close to the docking slot and an outer side of the flare arm away from the docking slot. An insulating block made of flexible material is fixed on the outer side of the flare arm. The insulating block covers and fixes the end of the flare arm. An elastic abutment arm is bent and extended from one end of the grounding terminal away from the docking slot, and the elastic abutment arm abuts against the insulating block.

6. The electrical connector according to claim 5, characterized in that: There are multiple insulating blocks, each of which covers and fixes the ends of two adjacent signal flare arms. Each insulating block includes two blocked parts and a separating groove. Each blocked part is arranged on the outside of the flare arm of a signal terminal. The separating groove is located between two adjacent signal flare arms to separate the two signal flare arms. The separating groove is also located between the two blocked parts to separate the two blocked parts. The part of the insulating block located at the front end of the separating groove connects the two blocked parts.

7. The electrical connector according to claim 5, wherein: There are two ground terminals between two adjacent differential signal terminal pairs, each of the elastic abutting arms abuts against a blocked portion, and the vertical direction perpendicular to the front-to-back direction and the left-to-right direction is defined as the up-down direction. Along the up-down direction, the projection of the elastic abutting arm overlaps with the projection of the first contact portion.

8. The electrical connector according to claim 5, wherein: The insulating block comprises a guide portion, the guide portion is located in front of the first contact portion and covers the end of the flare arm, the front end of the guide portion has a step portion, and the grounding finger abuts against the step portion.

9. The electrical connector according to claim 1, wherein: The grounding finger includes three grounding strips, each of which is provided with a second contact portion, and the three grounding strips are connected at the rear by a horizontal strip.

10. The electrical connector according to claim 1, wherein: The main body has a shielding plate opposite to the grounding finger, and the shielding plate has a plurality of first fixed elastic arms extending backward and a plurality of first slots located between two adjacent first fixed elastic arms. A second shielding member is provided behind the shielding plate, and the second shielding member includes a plurality of second slots and a plurality of second fixed elastic arms extending forward. The grounding terminal is protruding with a plurality of first blocks and second blocks, the first blocks cooperate with the first slots, and the second blocks cooperate with the second slots. The first fixed elastic arm abuts against the second shielding member, and the second fixed elastic arm abuts against the shielding plate. The first fixed elastic arm and the second fixed elastic arm are alternately arranged in the left-right direction.

11. The electrical connector according to claim 1, wherein: The signal terminal includes a signal terminal, and the ground terminal includes a ground terminal. A second shielding component and a third shielding component are provided on the upper and lower sides of the ground terminal. A shielding space is surrounded by two adjacent ground terminals and the second shielding component and the third shielding component. The signal terminal is located in the shielding space. At least one cable enters the shielding space. The signal line in the cable is connected to the signal terminal. A conductive component is provided in the shielding space. The second shielding component, the third shielding component and the ground terminal are electrically connected to the grounding component in the cable through the conductive component.

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