Electric connector

Abstract

The invention discloses an electric connector, which comprises a shell with an outer bottom surface and a terminal module arranged in the shell, and is characterized in that the terminal module comprises a signal terminal with a signal main body part and a signal contact part; the conductive shielding piece is provided with a shielding main body part and an extension part, and the shielding main body part comprises a base body and a shielding part; the conductive grounding piece is provided with a grounding main body part and a grounding contact part; wherein the signal contact part and the grounding contact part protrude out of the outer bottom surface; the grounding contact part is located below the extension part, the grounding contact part and the extension part are arranged at an interval, and the grounding main body part is electrically connected with the shielding main body part; seen from the left-right direction, the projection of the signal main body part is located in the projection of the shielding part; seen from the front-back direction, the projection of the signal main body part is in the projection of the base body; after the electric connector is electrically connected with the butt joint element, the signal contact part and the grounding contact part abut against the butt joint element downwards, and the grounding contact part abuts against the extension part upwards. Viewed from the left-right direction, the projection of the grounding contact part and the projection of the extension part jointly cover the projection of the signal contact part.

Description

[Technical field]

[0001] The invention relates to an electric connector, in particular to an electric connector capable of reducing crosstalk. [Background technology]

[0002] The rapid development of the digital information age has made the data processing speed of servers and computers faster and faster. For electrical connectors as transmission media, how to ensure signal integrity is an issue worth considering. Existing electrical connectors generally include multiple signal terminal pairs for transmitting differential signals and grounding terminals that are alternately and side by side with the signal terminal pairs. The grounding terminals are generally used to separate two adjacent signal terminal pairs to reduce the mutual crosstalk of the signal terminal pairs. However, in fact, the crosstalk of one of the multiple signal terminal pairs to other signal terminal pairs radiates from the one signal terminal pair as the center to any angle of the periphery. Therefore, only the grounding terminals that are alternately and side by side with the signal terminals have extremely limited effect on reducing the crosstalk. Under the requirements of higher signal integrity, the existing electrical connectors cannot meet the needs.

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

[0004] In view of the problems faced by the background technology, the invention aims to provide an electrical connector that reduces crosstalk by providing a conductive shielding member and a conductive grounding member that can shield the signal terminal to the maximum extent.

[0005] To achieve the above purpose, the present invention adopts the following technical means:

[0006] An electrical connector is downwardly abutted against a docking element, comprising: a shell, and a terminal module accommodated in the shell, the shell having an outer bottom surface facing the docking element, the terminal module comprising: a signal terminal having a signal main body and a signal contact portion extending downwardly from the signal main body; a conductive shielding member having a shielding main body and an extension portion extending downwardly from the shielding main body, the shielding main body comprising a substrate and a shielding portion extending forwardly from the substrate; a conductive grounding member having a grounding main body and an elastic grounding contact portion extending downwardly from the grounding main body; wherein both the signal contact portion and the grounding contact portion protrude downwardly from the outer bottom surface; the grounding contact portion is located below the extension portion and is spaced apart from the extension portion, and the grounding main body is electrically connected to the shielding main body; when viewed from the left and right directions, the projection of the signal main body is located within the projection of the shielding portion; when viewed from the front and back directions, the projection of the signal main body is located within the projection of the substrate; after the electrical connector is electrically connected to the docking element, the signal contact portion and the grounding contact portion both abut downward against the docking element, and the grounding contact portion abuts upward against the extension portion; when viewed from the left and right directions, the projection of the grounding contact portion and the projection of the extension portion jointly cover the projection of the signal contact portion.

[0007] Furthermore, a grounding compensation portion is formed by extending obliquely downward from the grounding main body portion and toward the direction close to the signal contact portion. Before the electrical connector is electrically connected to the docking element, the grounding compensation portion abuts the signal contact portion. After the electrical connector is electrically connected to the docking element, the grounding compensation portion is electrically isolated from the signal contact portion.

[0008] Furthermore, the ground compensation portion and the ground contact portion are arranged with a left-right spacing.

[0009] Furthermore, two extension parts are extended downward from the shielding main body to form a left and right interval, and a shielding cavity penetrating forward and a clearance groove penetrating backward are provided between the two adjacent extension parts. The base body and the clearance groove are aligned up and down, and the signal contact part is connected to the signal main body through a signal elastic part, a part of the signal elastic part is located in the shielding cavity, and the other part is located in the clearance groove.

[0010] Furthermore, a groove penetrating downward is provided on one side of the base body away from the shielding portion, a part of the grounding main body is received in the groove, and another part of the grounding main body closes an opening formed by the rearward penetration of the giving way groove.

[0011] Furthermore, the grounding contact portion includes a grounding elastic portion and a grounding free end located in front of the grounding elastic portion, the grounding main body portion has a bottom end connected to the grounding contact portion, the grounding elastic portion is located between the grounding free end and the bottom end, and after the electrical connector is electrically connected to the docking element, the grounding free end and the bottom end abut against the extension portion upward, and the grounding elastic portion abuts against the docking element downward.

[0012] Furthermore, a conductive shielding member is arranged in front of the conductive shielding member, and the conductive shielding member has a connecting portion located in front of the extending portion and contacting the extending portion, wherein the connecting portion contacts the grounding contact portion downwardly.

[0013] Furthermore, the signal contact portion elastically abuts against the docking element, and the signal terminal has a signal free end, the signal contact portion is located between the signal free end and the signal main body, and the extension portion includes a shielding compensation portion, and the front end of the shielding compensation portion faces forward beyond the signal free end.

[0014] Furthermore, the signal terminal has a signal conductive portion extending upward from the signal main body portion, and along the left-right direction, the projection of the signal conductive portion is located within the projection of the shielding portion; viewed along the front-back direction, the projection of the signal conductive portion is located within the projection of the base; the signal conductive portion has a front conductive contact surface, and the front conductive contact surface contacts a conductive body, wherein the front end surface of the shielding portion at the position of the signal conductive portion extends forward beyond the front end surface of the shielding portion at the position of the signal main body portion.

[0015] Furthermore, the signal terminal has a signal conducting portion extending upward from the signal main body portion, and along the left-right direction, the projection of the signal conducting portion is located within the projection of the shielding portion; viewed along the front-to-back direction, the projection of the signal conducting portion is located within the projection of the base; the cable has a core, a shielding layer located outside the core, and an insulating layer located outside the shielding layer, the lower end of the core extends downward beyond the insulating layer and the shielding layer to form an electrical connection portion, the electrical connection portion contacts the signal conducting portion, and a portion of the shielding layer is exposed outside the insulating layer; a conductive adhesive is cured and contacts the portion of the shielding layer exposed outside the insulating layer and the front surface of the shielding portion, and along the front-to-back direction, a cable transition section is provided between the lower surface of the conductive adhesive and the electrical connection portion.

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

[0017] The present invention arranges the grounding contact portion below the extension portion and is spaced apart from the extension portion, so that the grounding main body portion is electrically connected to the shielding main body portion; when viewed in the left-right direction, the projection of the signal main body portion overlaps with the projection of the shielding portion; when viewed in the front-back direction, the projection of the signal main body portion overlaps with the projection of the base; so that when the electrical connector is electrically connected to the docking element, the signal contact portion and the grounding contact portion are not only arranged to abut the docking element downward, but also the grounding contact portion is arranged to abut the extension portion upward; therefore, when viewed in the left-right direction, the projection of the grounding contact portion and the projection of the extension portion completely cover the projection of the signal contact portion, so that for the signal terminal, its signal main body portion and the signal contact portion can both be Being shielded not only reduces the interference to the signal terminal, but also avoids the signal terminal acting as a crosstalk source to interfere with the transmission of other signals. It should be noted here that due to some errors that may exist in the manufacturing process of the electrical connector, there is a certain gap between the ground contact portion and the extension portion, so that when viewed from the left and right directions, a very small part of the signal contact portion is exposed from the gap. Therefore, the projection of the ground contact portion and the projection of the extension portion completely cover the projection of the signal contact portion, which actually also includes the situation where the above-mentioned gap exists due to errors. In other words, the existence of the above-mentioned gap is caused by errors, and has little or even negligible effect on the shielding of the signal terminal.

Brief Description of the Drawings

[0018] Figure 1 It is a three-dimensional exploded view of the electrical connector and the docking element in the present invention;

[0019] Figure 2 for Figure 1 Exploded view of the CEC connector;

[0020] Figure 3 for Figure 1 The front view of the CEC connector;

[0021] Figure 4 for Figure 3Sectional view along AA;

[0022] Figure 5 for Figure 3 Sectional view along BB;

[0023] Figure 6 It is a three-dimensional exploded view of the conductive grounding member, the cable and other structures of the terminal module;

[0024] Figure 7 A three-dimensional view of the terminal module and the cable;

[0025] Figure 8 It is a three-dimensional cross-sectional view of the partial structure and cables of the terminal module.

[0026] Description of the accompanying drawings for the specific implementation:

[0027]

[0028] [Specific implementation method]

[0029] 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.

[0030] like Figures 1 to 8 As shown, the electrical connector 100 of the present invention defines the front-to-back direction as the X-axis, the up-down direction as the Y-axis, and the left-to-right direction as the Z-axis. Please note that the up-down, left-to-right and the right-to-left directions of the present invention are only for the convenience of better understanding the implementation scheme of the present invention, and are not limitations of the present invention.

[0031] like Figure 1 and Figure 4 As shown, the electrical connector 100 of the present invention is downwardly abutted against a docking element 200, and the electrical connector 100 includes a shell 1 and two terminal modules 2 accommodated in the shell 1; the shell 1 is injection-molded by molten insulating plastic, and of course in other embodiments, the shell 1 can also be formed by a conductive metal material through stamping, die-casting or powder metallurgy processes; wherein the shell 1 includes an outer bottom surface 11, wherein the outer bottom surface 11 is arranged toward the docking element 200, in other words, in this embodiment, the outer bottom surface 11 is arranged facing downward.

[0032] like Figure 5 and Figure 7As shown, each terminal module 2 includes a plurality of signal terminals 21, a conductive shielding member 3, a conductive grounding member 4 and a conductive shielding member 5; wherein each combination of two adjacent signal terminals 21 is used to transmit a differential signal, and of course in other embodiments, the signal terminal 21 can also be separately provided to transmit a single-ended signal; the conductive shielding member 3, the conductive grounding member 4 and the conductive shielding member 5 are preferably made of metal, such as stainless steel, but in other embodiments, they can also be made of other materials, such as conductive plastics.

[0033] like Figure 8 As shown, each signal terminal 21 has a signal main body 211, a signal elastic part 212 extending downward from the signal main body 211, a signal contact part 213 upwardly connected to the signal elastic part 212, and a signal conductive part 214 extending upward from the signal main body 211. The signal contact part 213 extends downward beyond the outer bottom surface 11 to elastically abut against the gold finger on the upper surface of the docking element 200, wherein the docking element 200 is a PCB. It should be noted here that, in fact, the docking element 200 also includes a positioning frame 6 and a shielding shell 7 wrapped around the outside of the positioning frame 6. After the electrical connector 100 is electrically connected to the docking element 200, part of the electrical connector 100 is located in the positioning frame 6 and the shielding shell 7.

[0034] Continue to refer Figure 8 The signal conducting portion 214 in the figure has a front conducting surface 2141, and the front conducting surface 2141 contacts a conducting body, wherein the conducting body can be a wire core 81 of a cable 8, wherein the cable 8 has a wire core 81, a shielding layer 82 located outside the wire core 81, and an insulating layer 83 located outside the shielding layer 82, and the lower end of the wire core 81 extends downward beyond the insulating layer 83 and the shielding layer 82 to form an electrical connection portion 811, and the electrical connection portion 811 contacts the front surface of the signal conducting portion 214 backward, and a portion of the shielding layer 82 is exposed outside the insulating layer 83; a conductive The conductive glue Q is cured and contacts the portion of the shielding layer 82 exposed from the insulating layer 83 and the front surface of the shielding portion 312, and a cable transition section 84 is provided between the lower surface of the conductive glue Q and the electrical connection portion 811 when viewed from the front-to-back direction. The conductive glue Q is preferably a conductive silver glue. In addition, the signal terminal 21 further includes a signal free end 215, and the signal contact portion 213 is located between the signal free end 215 and the signal main body 211. In other words, the signal free end 215 and the signal conductive connection portion 214 are located at opposite ends of the signal terminal 21. Please refer to Figure 5It can be seen that the so-called “front conductive surfaces 2141” on the two signal terminals 21 are actually opposite to each other. Therefore, the above description of the signal conductive portion 214 of the signal terminal 21 having the front conductive surface 2141 is for a better description so as to facilitate understanding of the connection relationship between the structures. If the definition of the direction is fixed, the signal conductive portion 214 of the other terminal module 2 can also be described as having a rear conductive surface. Since the structures of the two terminal modules 2 are the same, only the direction description is different, it will not be repeated here.

[0035] In fact, the two terminal modules 2 in the embodiment of the present invention are arranged in a mirror image. Therefore, for the description of the positional relationship of the "front" or "back" of the structure, if the structure of one of the terminal modules 2 is described as extending forward, the structure of the other terminal module 2 needs to be described as extending backward. However, since the structures of the two terminal modules 2 are consistent, only the directions are described differently, the structure of the other terminal module 2 will not be repeated; the following is an explanation of the structure of one of the terminal modules 2.

[0036] like Figures 6 to 8 As shown, the conductive shielding member 3 has a shielding main body portion 31 and a plurality of extension portions 32 extending downward from the shielding main body portion 31, wherein the material of the conductive shielding member 3 can be formed by processes such as powder metallurgy and die casting, and of course can also be electroplated plastic, that is, electroplating metal material on the surface of an insulating plastic material; each extension portion 32 includes a shielding compensation portion 321, and two adjacent extension portions 32 on the left and right are arranged at intervals to form a shielding cavity 33 penetrating forward and a clearance groove 34 penetrating backward therebetween, wherein the clearance groove 34 and the shielding cavity 33 are connected front to back, and the shielding main body portion 31 includes a base 311 and a plurality of shielding portions 312 extending forward from the base 311, and the number of the plurality of shielding portions 312 corresponds to the number of the plurality of extension portions. 32, wherein the extension portion 32 is upwardly connected to the base 311 and the shielding portion 312, and a groove 3111 penetrating downward is provided on the side of the base 311 away from the shielding portion 312; the paired signal terminals 21 are located between two adjacent shielding portions 312 on the left and right, and when viewed along the left-right direction, the projection of the signal main body 211 is located within the projection of the shielding portion 312, and the projection of the signal conductive portion 214 is located within the projection of the shielding portion 312; when viewed along the front-to-back direction, the projection of the signal main body 211 is located within the projection of the base 311, and the projection of the signal conductive portion 214 is located within the projection of the base 311. In other words, three sides of the signal terminal 21 (one of the front and rear sides and the left and right sides) are almost shielded by the conductive shielding member 3.

[0037] like Figure 7 and Figure 8As shown, the conductive grounding member 4 has a grounding body portion 41, a grounding compensation portion 42, and an elastic grounding contact portion 43 extending downward from the grounding body portion 41. The grounding body portion 41 is located behind the shielding body portion 31 and is fixedly connected to the shielding body portion 31 to be electrically conductive, for example, by laser spot welding. Of course, in other embodiments, other suitable fixing methods can also be selected, and the present invention does not limit this. The grounding compensation portion 42 extends downward from the grounding body portion 41 and is inclined toward the direction close to the signal contact portion 213, and the grounding compensation portion 42 is connected to the signal contact portion 213. The contact portions 213 abut against each other; the grounding compensation portion 42 and the grounding contact portion 43 are spaced apart from each other; the grounding contact portion 43 is located below the extension portion 32 and spaced apart from the extension portion 32, and the grounding contact portion 43 extends downward beyond the outer bottom surface 11 to abut against the gold finger on the surface of the docking element 200; in addition, the grounding contact portion 43 includes a grounding elastic portion 431 and a grounding free end 432 located in front of the grounding elastic portion 431, the grounding main body portion 41 has a bottom end 411 connected to the grounding contact portion 43, and the grounding elastic portion 431 is located between the grounding free end 432 and the bottom end 411.

[0038] like Figure 5 and Figure 8 As shown, the base 311 is aligned with the clearance groove 34 in vertical direction, a part of the signal elastic portion 212 is located in the shielding cavity 33, and another part is located in the clearance groove 34; a part of the grounding main body 41 is received in the groove 3111, and another part of the grounding main body 41 closes the opening formed by the clearance groove 34 penetrating backward; the front end surface of the shielding compensation portion 321 extends forward beyond the signal free end 215, and the front end surface of the shielding portion 312 at the position of the signal conductive portion 214 extends forward beyond the front end surface of the shielding portion 312 at the position of the signal main body 211.

[0039] like Figure 2 and Figure 4 As shown, the conductive shielding member 5 is located in front of the conductive shielding member 3 , and the conductive shielding member 5 has a connecting portion 51 located in front of the extending portion 32 and contacting the extending portion 32 , wherein the connecting portion 51 further contacts the grounded free end 432 downward.

[0040] like Figures 3 to 5As shown, after the electrical connector 100 is electrically connected to the docking element 200, the signal contact portion 213 and the ground contact portion 43 both abut against the docking element 200 downward, and the ground contact portion 43 abuts against the extension portion 32 upward. Specifically, the grounding free end 432 and the bottom end 411 abut against the extension portion 32 upward, and the grounding elastic portion 431 abuts against the docking element 200 downward. When viewed from the left and right directions, the projection of the grounding contact portion 43 and the projection of the extension portion 32 jointly cover the projection of the signal contact portion 213. It is worth noting that after the electrical connector 100 is electrically connected to the docking element 200, the signal contact portion 213 is subjected to the upward holding force of the docking element 200 and moves upward, so that the grounding compensation portion 42 and the signal contact portion 213 are separated from each other to be electrically isolated, thereby avoiding a short circuit between the signal terminal 21 and the conductive grounding member 4.

[0041] In summary, the present invention has the following beneficial effects:

[0042] 1. The present invention arranges the grounding contact portion 43 below the extension portion 32 and is spaced apart from the extension portion 32, so that the grounding body portion 41 is electrically connected to the shielding body portion 31; when viewed from the left and right directions, the projection of the signal body portion 211 overlaps with the projection of the shielding portion 312; when viewed from the front and back directions, the projection of the signal body portion 211 overlaps with the projection of the base 311; so that when the electrical connector 100 is electrically connected to the docking element 200, the signal contact portion 213 and the grounding contact portion 43 are not only arranged to abut against the docking element 200 downward, but also arranged to abut against the extension portion 32 upward; therefore, when viewed from the left and right directions, the projection of the grounding contact portion 43 and the projection of the extension portion 32 completely cover the projection of the signal contact portion 213, so that For the signal terminal 21, its signal main body portion 211 and the signal contact portion 213 can be shielded, which not only reduces the interference to the signal terminal 21, but also avoids the signal terminal 21 from interfering with the transmission of other signals as a crosstalk source; it should be noted here that due to some errors that may exist in the manufacturing process of the electrical connector 100, there is a certain gap between the ground contact portion 43 and the extension portion 32, so that when viewed in the left and right directions, a very small part of the signal contact portion 213 is exposed from the gap, so the projection of the ground contact portion 43 and the projection of the extension portion 32 completely cover the projection of the signal contact portion 213, which actually also includes the situation where the above-mentioned gap exists due to errors. In other words, the existence of the above-mentioned gap is caused by errors.

[0043] The shielding effect on the signal terminal 21 is not significant and can even be ignored.

[0044] 2. Before the electrical connector 100 is electrically connected to the docking element 200, the ground compensation portion 42 is abutted against the signal contact portion 213, so that the ground compensation portion 42 has the largest shielding area, further reducing signal crosstalk; and the ground compensation portion 42 and the ground contact portion 43 are further spaced apart to ensure the elasticity of the ground compensation portion 42, so that when it abuts against the signal contact portion 213, the signal contact portion 213 will not be damaged due to excessive abutment force, while also ensuring

[0045] The elasticity of the ground contact portion 43 is ensured, so that the elastic contact between the ground contact portion 43 and the docking element 200 is stable.

[0046] 3. A portion of the signal elastic portion 212 is located in the shielding cavity 33, and the other portion is located in the clearance groove 34, so that the elastic deformation of the signal terminal 21 is almost completely carried out within the shielding range of the conductive shielding component 3, thereby further reducing signal crosstalk. The shielding cavity 33 penetrates forward and the clearance groove 34 penetrates backward to avoid short circuit between the signal terminal 21 and the conductive shielding component 3. Furthermore, the provision of the clearance groove 34 also makes full use of the space inside the electrical connector 100. In addition, in order to avoid signal leakage at the position of the clearance groove 34 that penetrates backward and interferes with the transmission of other signals, the present invention also arranges the grounding body 41 of the conductive grounding component 4 to close the opening formed by the clearance groove 34 penetrating backward, and is also accommodated in the groove 3111 of the base 311, thereby ensuring that at the position of the clearance groove 34, the interference of signal leakage on the transmission of other signals is avoided or reduced.

[0047] 4. The grounding free end 432 and the bottom end 411 of the conductive grounding member 4 abut against the extension portion 32 upward, and the grounding elastic portion 431

[0048] Located between the grounding free end 432 and the bottom end 411, the grounding elastic portion 431 abuts downward against the docking element 200. The position setting of each abutting position between the above structures makes the electrical connection between the conductive grounding member 4 and the conductive shielding member 3, and the electrical connection between the conductive grounding member 4 and the docking element 200 relatively stable.

[0049] 5. The conductive shielding member 5 has a connecting portion 51 located in front of the extension portion 32 and in contact with the extension portion 32, and the connecting portion 51

[0050] The ground contact portion 43 is contacted downward, thereby increasing the ground return path and reducing signal crosstalk.

[0051] 6. The front end of the shielding compensation portion 321 extends forward beyond the signal free end 215 , thereby further shielding the signal terminal 21 and reducing signal crosstalk.

[0052] 7. Since the front conductive contact surface 2141 contacts a conductive body, the front end surface of the shielding portion 312 at the position of the signal conductive portion 214 is set to extend forward beyond the front end surface of the shielding portion 312 at the position of the signal main body portion 211 along the front-to-back direction, thereby achieving a better shielding effect for the signal conductive portion 214 and the conductive body.

[0053] 8. The conductive shielding member 3 further shields the signal conducting portion 214, and is also provided with a cured conductive adhesive Q to electrically connect the shielding layer 82 of the cable 8 and the conductive shielding member 3, thereby increasing the ground return path to reduce crosstalk. In addition, viewed along the front-to-back direction, a cable transition section 84 is provided between the lower surface of the conductive adhesive Q and the electrical connection portion 811 to prevent the conductive adhesive Q from flowing downward during the curing process and contacting the wire core 81 and causing a short circuit.

[0054] 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, downwardly abutting a mating element, comprising: A housing, and a terminal module received in the housing, wherein the housing has an outer bottom surface facing the docking element, and the terminal module comprises: The signal terminal comprises a signal main body and a signal contact portion extending downward from the signal main body; The conductive shielding member comprises a shielding main body portion and an extension portion extending downward from the shielding main body portion, wherein the shielding main body portion comprises a base body and a shielding portion extending forward from the base body; A conductive grounding member having a grounding main body portion and an elastic grounding contact portion extending downward from the grounding main body portion; The signal contact portion and the ground contact portion both protrude downward from the outer bottom surface; the ground contact portion is located below the extension portion and is spaced apart from the extension portion, and the ground main body portion is electrically connected to the shielding main body portion; when viewed in the left-right direction, the projection of the signal main body portion is located within the projection of the shielding portion; when viewed in the front-back direction, the projection of the signal main body portion is located within the projection of the base; After the electrical connector is electrically connected to the docking element, the signal contact portion and the ground contact portion both abut the docking element downward, and the ground contact portion abuts the extension portion upward; viewed from the left and right directions, the projection of the ground contact portion and the projection of the extension portion jointly cover the projection of the signal contact portion.

2. The electrical connector according to claim 1, wherein: A grounding compensation portion is formed by extending downward from the grounding main body portion and obliquely toward the signal contact portion. Before the electrical connector is electrically connected to the docking element, the grounding compensation portion abuts the signal contact portion. After the electrical connector is electrically connected to the docking element, the grounding compensation portion is electrically isolated from the signal contact portion.

3. The electrical connector according to claim 2, wherein: The grounding compensation portion and the grounding contact portion are arranged at intervals on the left and right.

4. The electrical connector according to claim 1, wherein: Two extension parts extending downward from the shielding main body are formed with a left and right interval, a shielding cavity penetrating forward and a clearance groove penetrating backward are provided between the two adjacent extension parts, the base body and the clearance groove are aligned up and down, the signal contact part and the signal main body are connected through a signal elastic part, a part of the signal elastic part is located in the shielding cavity, and the other part is located in the clearance groove.

5. The electrical connector according to claim 4, wherein: A groove penetrating downward is arranged on one side of the base body away from the shielding part, a part of the grounding main body is received in the groove, and another part of the grounding main body closes the opening formed by the rearward penetration of the giving way groove.

6. The electrical connector according to claim 1, wherein: The grounding contact portion includes a grounding elastic portion and a grounding free end located in front of the grounding elastic portion. The grounding main body portion has a bottom end connected to the grounding contact portion. The grounding elastic portion is located between the grounding free end and the bottom end. After the electrical connector is electrically connected to the docking element, the grounding free end and the bottom end abut against the extension portion upward, and the grounding elastic portion abuts against the docking element downward.

7. The electrical connector according to claim 1, wherein: A conductive shielding member is arranged in front of the conductive shielding member, and the conductive shielding member has a connecting portion located in front of the extending portion and contacting the extending portion, wherein the connecting portion contacts the grounding contact portion downward.

8. The electrical connector according to claim 1, wherein: The signal contact part elastically abuts against the docking element, and the signal terminal has a signal free end, the signal contact part is located between the signal free end and the signal main body, and the extension part includes a shielding compensation part, and the front end of the shielding compensation part faces forward beyond the signal free end.

9. The electrical connector according to claim 1, wherein: The signal terminal has a signal conductive part extending upward from the signal main body, and along the left-right direction, the projection of the signal conductive part is located within the projection of the shielding part; along the front-back direction, the projection of the signal conductive part is located within the projection of the base; the signal conductive part has a front conductive contact surface, and the front conductive contact surface contacts a conductive body, wherein the front end surface of the shielding part at the position of the signal conductive part exceeds the front end surface of the shielding part at the position of the signal main body.

10. The electrical connector according to claim 1, wherein: The signal terminal has a signal conducting portion extending upward from the signal main body, and along the left-right direction, the projection of the signal conducting portion is located within the projection of the shielding portion; viewed along the front-to-back direction, the projection of the signal conducting portion is located within the projection of the base; the cable has a core, a shielding layer located outside the core, and an insulating layer located outside the shielding layer, the lower end of the core extends downward beyond the insulating layer and the shielding layer to form an electrical connection portion, the electrical connection portion contacts the signal conducting portion, and a portion of the shielding layer is exposed outside the insulating layer; a conductive adhesive is cured and contacts the portion of the shielding layer exposed outside the insulating layer and the front surface of the shielding portion, and along the front-to-back direction, a cable transition section is provided between the lower surface of the conductive adhesive and the electrical connection portion.

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