Electric connector

Abstract

An electric connector comprises a shell and a terminal module contained in the shell, the shell is provided with an outer bottom face facing a butt joint element, and the terminal module comprises a signal terminal which is provided with a signal main body part and a signal contact part formed by extending downwards from the signal main body part; the conductive shielding piece is provided with a shielding main body part and an extension part which is formed by extending downwards from the shielding main body part; the conductive grounding piece is provided with a grounding main body part and an elastic grounding contact part which is formed by extending downwards from the grounding main body part; the signal contact part and the grounding contact part protrude downwards from 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 and the shielding main body part are contacted and electrically conducted; 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 present invention relates to an electrical connector, and more particularly to an electrical connector for reducing crosstalk.

Background Art

[0002] With the rapid development of the digital information age, the data processing speed of servers and computers is getting faster and faster. For electrical connectors as transmission media, how to ensure signal integrity is a problem worthy of consideration. Existing electrical connectors generally include a plurality of signal terminal pairs for transmitting differential signals and ground terminals alternately and arranged side by side with the signal terminal pairs. The ground 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 signal terminal pair among the plurality of signal terminal pairs to other signal terminal pairs diverges at any angle around the one signal terminal pair. Therefore, only setting ground terminals alternately and side by side with the signal terminals has extremely limited weakening effect on crosstalk. Under the requirement 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] Aiming at the problems faced by the background art, the creative purpose of the present invention is to provide an electrical connector that reduces crosstalk by providing a conductive shielding member and a conductive grounding member that can shield more signal terminals.

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

[0006] An electrical connector that abuts downward against a mating element, comprising: a housing, and a terminal module received in the housing. The housing has an outer bottom surface facing the mating element. The terminal module includes: signal terminals having signal main bodies and signal contact portions extending downward from the signal main bodies; a conductive shielding member having a shielding main body and an extension portion extending downward from the shielding main body; a conductive grounding member having a grounding main body and an elastic grounding contact portion extending downward from the grounding main body. Among them, both the signal contact portion and the grounding contact portion protrude downward from the outer bottom surface; the grounding contact portion is located below the extension portion and is spaced from the extension portion, and the grounding main body is in contact with and electrically conducts with the shielding main body; after the electrical connector is electrically connected to the mating element, both the signal contact portion and the grounding contact portion abut downward against the mating element, and the grounding contact portion abuts upward against the extension portion; when viewed in the left-right direction, the projection of the grounding contact portion and the projection of the extension portion jointly cover the projection of the signal contact portion.

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

[0008] Further, the ground compensation portion and the ground contact portion are arranged at a left-right interval.

[0009] Further, two spaced-apart left and right extending portions are formed by extending downward from the shielding main body portion. There is a shielding cavity penetrating forward and a relief groove penetrating backward between two adjacent extending portions. The base body is vertically aligned with the relief groove. The signal contact portion is connected to the signal main body portion through a signal elastic portion. A part of the signal elastic portion is located in the shielding cavity, and the other part is located in the relief groove.

[0010] Further, the shielding main body portion includes a base body and a shielding portion formed by extending forward from the base body; 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 body; a groove penetrating downward is provided on the side of the base body facing away from the shielding portion. A part of the ground main body portion is received in the groove, and the other part of the ground main body portion closes the opening formed by the relief groove penetrating backward.

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

[0012] Further, a conductive shielding member is provided in front of the conductive shielding member. The conductive shielding member has a connecting portion located in front of the extending portion and contacting the extending portion. Among them, the connecting portion contacts the ground contact portion downward.

[0013] Further, 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 portion. The extending portion includes a shielding compensation portion, and the front end surface of the shielding compensation portion extends forward beyond the signal free end.

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

[0015] Further, the shielding main body includes a base body and a shielding portion extending forward from the base body; when viewed in the left-right direction, the projection of the signal main body is located within the projection of the shielding portion; when viewed in the front-back direction, the projection of the signal main body is located within the projection of the base body; the signal terminal has a signal connection portion extending upward from the signal main body, and when viewed in the left-right direction, the projection of the signal connection portion is located within the projection of the shielding portion; when viewed in the front-back direction, the projection of the signal connection portion is located within the projection of the base body; 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, and the electrical connection portion contacts the signal connection portion. A part of the shielding layer is exposed outside the insulating layer; a conductive adhesive is cured and contacts the part of the shielding layer exposed outside the insulating layer and the front surface of the shielding portion, and when viewed in the front-back direction, there is a cable transition section 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] In the present invention, by arranging the above-mentioned grounding contact portion below the extending portion and at an interval from the extending portion, the grounding main body contacts the shielding main body and is electrically conducted; after 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 downward against the docking element, but also the grounding contact portion is arranged to abut upward against the extending portion; therefore, when viewed in the left-right direction, the projection of the grounding contact portion and the projection of the extending portion completely cover the projection of the signal contact portion. Thus, for the signal terminal, its signal contact portion can also be shielded, reducing the interference received by the signal terminal and also avoiding the signal terminal 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, there is a certain gap between the grounding contact portion and the extending portion, so that when viewed in the left-right direction, a very small part of the signal contact portion is exposed from this gap. Therefore, the fact that the projection of the above-mentioned grounding contact portion and the projection of the extending portion completely cover the projection of the signal contact portion actually includes the situation where the above-mentioned gap exists due to errors. In other words, the existence of the above-mentioned gap is due to errors and has little or negligible impact on the shielding of the signal terminal.

Explanation of the Drawings

[0018] Figure 1 This is an exploded perspective view of the electrical connector and the docking element in the present invention;

[0019] Figure 2 is Figure 1 an exploded perspective view of the electrical connector in;

[0020] Figure 3 is Figure 1 the front view of the electrical connector in;

[0021] Figure 4 is Figure 3 a sectional view along A - A in;

[0022] Figure 5 is Figure 3 a sectional view along B - B in;

[0023] Figure 6 is an exploded perspective view of the conductive grounding part, the cable and other structures of the terminal module;

[0024] Figure 7 is a perspective view of the terminal module and the cable;

[0025] Figure 8 is a perspective sectional view of a part of the terminal module and the cable;

[0026] Figure 9 This is a partial exploded view of the terminal module in another embodiment of the present invention.

[0027] Explanation of the reference numerals in the specific embodiments:

[0028]

[0029]

Specific Embodiments

[0030] For better understanding of the purpose, structure, features and functions of the present invention, the present invention will be further described below in conjunction with the drawings and specific embodiments.

[0031] As Figures 1 to 9 shown, for the electrical connector 100 of the present invention, the front - rear direction is defined as the X - axis, the up - down direction is defined as the Y - axis, and the left - right direction is defined as the Z - axis. Please note that the up - down, left - right directions in the present invention are only for better understanding of the implementation scheme of the present invention, rather than a limitation to the present invention.

[0032] As Figure 1 and Figure 4As shown, the electrical connector 100 of the present invention abuts downward against a mating element 200, and the electrical connector 100 includes a housing 1 and two terminal modules 2 received in the housing 1; the housing 1 is injection molded from molten insulating plastic. Of course, in other embodiments, the housing 1 can also be formed by a conductive metal material through processes such as stamping, die casting, or powder metallurgy; wherein, the housing 1 includes an outer bottom surface 11, and the outer bottom surface 11 faces the mating element 200. In other words, in this embodiment, the outer bottom surface 11 faces downward.

[0033] As Figure 5 and Figure 7 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 every two adjacent signal terminals 21 are combined to transmit a differential signal. Of course, in other embodiments, the signal terminals 21 can also be provided separately 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 a metal material, such as stainless steel. However, in other embodiments, they can also be other materials, such as conductive plastic or electroplated plastic, etc.

[0034] As Figure 8 shown, each signal terminal 21 has a signal main body portion 211, a signal elastic portion 212 extending downward from the signal main body portion 211, a signal contact portion 213 connected upward to the signal elastic portion 212, and a signal connection portion 214 extending upward from the signal main body portion 211. The signal contact portion 213 extends downward beyond the outer bottom surface 11 to elastically abut against the gold fingers on the upper surface of the mating element 200. The mating element 200 is a PCB. It should be noted here that, in fact, the mating element 200 also includes a positioning frame 6 and a shielding housing 7 covering the outside of the positioning frame 6. After the electrical connector 100 is electrically connected to the mating element 200, a part of the electrical connector 100 is located inside the positioning frame 6 and the shielding housing 7.

[0035] Continue to refer to Figure 8, the signal connection part 214 in this figure has a front connection surface 2141, and the front connection surface 2141 contacts a connection body, where the connection body can be the core 81 of the cable 8. The cable 8 has a core 81, a shielding layer 82 located outside the core 81, and an insulating layer 83 located outside the shielding layer 82. The lower end of the core 81 extends downward beyond the insulating layer 83 and the shielding layer 82 to form an electrical connection part 811. The electrical connection part 811 contacts the front surface of the signal connection part 214 backward. A part of the shielding layer 82 is exposed outside the insulating layer 83; a conductive adhesive Q is cured and contacts the part of the shielding layer 82 exposed outside the insulating layer 83 and the front surface of the shielding part 312. And when viewed in the front-back direction, there is a cable transition section 84 between the lower surface of the conductive adhesive Q and the electrical connection part 811. The conductive adhesive Q is preferably conductive silver adhesive; in addition, the signal terminal 21 also has a signal free end 215, and the signal contact part 213 is located between the signal free end 215 and the signal main body part 211. In other words, the signal free end 215 and the signal connection part 214 are located at opposite ends of the signal terminal 21; please further refer to Figure 5 , it can be seen that the so-called "front connection surface 2141" on the two signal terminals 21 actually faces away from each other. Therefore, the above description that the signal connection part 214 of the signal terminal 21 has a front connection surface 2141 is for better description to facilitate understanding of the connection relationship between the structures. If the definition of the fixed direction is given, it can also be described that the signal connection part 214 of the other terminal module 2 has a rear connection surface. Since the structures of the two terminal modules 2 are the same, only the direction descriptions are different, so it will not be elaborated here.

[0036] Actually, 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 structure "front" or "rear", if the structure of one terminal module 2 is described as extending forward, then 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 the same, only the direction descriptions are different, so the structure of the other terminal module 2 will not be elaborated; the following is an explanation of the structure of one of the terminal modules 2.

[0037] Such as Figures 6 to 8As 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. The material of the conductive shielding member 3 can be formed by processes such as powder metallurgy and die casting. Of course, it can also be electroplated plastic, that is, electroplating a metal material on the surface of an insulating plastic material. Each extension portion 32 includes a shielding compensation portion 321. Two adjacent extension portions 32 on the left and right are spaced apart to form a shielding cavity 33 penetrating forward therebetween and a relief groove 34 penetrating backward. The relief groove 34 and the shielding cavity 33 communicate with each other front and back. The shielding main body portion 31 includes a base body 311 and a plurality of shielding portions 312 extending forward from the base body 311. The number of the plurality of shielding portions 312 corresponds to the number of the plurality of extension portions 32. Among them, the extension portion 32 is connected upward to the base body 311 and the shielding portion 312. A downwardly penetrating groove 3111 is provided on the side of the base body 311 facing away from the shielding portion 312. A pair of signal terminals 21 are located between two adjacent shielding portions 312 on the left and right. And when viewed in the left-right direction, the projection of the signal main body portion 211 is located within the projection of the shielding portion 312, and the projection of the signal connection portion 214 is located within the projection of the shielding portion 312. When viewed in the front-back direction, the projection of the signal main body portion 211 is located within the projection of the base body 311, and the projection of the signal connection portion 214 is located within the projection of the base body 311. In other words, three sides (one of the front and back sides and the left and right sides) of the signal terminal 21 are almost shielded by the conductive shielding member 3.

[0038] As Figure 7 and Figure 8 shown, the conductive grounding member 4 has a grounding main body portion 41, a grounding compensation portion 42, and an elastic grounding contact portion 43 extending downward from the grounding main body portion 41. The grounding main body portion 41 is located behind the shielding main body portion 31 and is fixedly connected to the shielding main body portion 31 for electrical conduction, for example, fixedly connected 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 main body portion 41 and obliquely extends in the direction close to the signal contact portion 213, and the grounding compensation portion 42 abuts against the signal contact portion 213. The grounding compensation portion 42 and the grounding contact portion 43 are spaced apart left and right. The grounding contact portion 43 is located below the extension portion 32 and is spaced apart from the extension portion 32. 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.

[0039] As Figure 5 and Figure 8As shown, the base body 311 is vertically aligned with the relief groove 34. A part of the signal elastic part 212 is located inside the shielding cavity 33, and the other part is located inside the relief groove 34. A part of the grounding main body part 41 is received in the groove 3111, and the other part of the grounding main body part 41 closes the opening formed by the relief groove 34 penetrating backward. The front end surface of the shielding compensation part 321 extends forward beyond the signal free end 215, and the front end surface of the shielding part 312 at the position of the signal connection part 214 extends forward beyond the front end surface of the shielding part 312 at the position of the signal main body part 211.

[0040] As Figure 2 and Figure 4 shown, the conductive shielding member 5 is located in front of the conductive shielding member 3. The conductive shielding member 5 has a connecting part 51 located in front of the extension part 32 and contacting the extension part 32. Among them, the connecting part 51 further contacts the grounding free end 432 downward.

[0041] As Figures 3 to 5 shown, after the electrical connector 100 is electrically connected to the docking element 200, the signal contact part 213 and the grounding contact part 43 both abut against the docking element 200 downward, and the grounding contact part 43 abuts against the extension part 32 upward. Specifically, the grounding free end 432 and the bottom end 411 abut against the extension part 32 upward, and the grounding elastic part 431 abuts against the docking element 200 downward. When viewed in the left-right direction, the projection of the grounding contact part 43 and the projection of the extension part 32 jointly cover the projection of the signal contact part 213. It should be noted that after the electrical connector 100 is electrically connected to the docking element 200, the signal contact part 213 is subjected to an upward holding force from the docking element 200 and thus moves upward, so that the grounding compensation part 42 and the signal contact part 213 are separated from each other for electrical isolation, avoiding short circuit between the signal terminal 21 and the conductive grounding part 4.

[0042] As Figure 9 shown, this is another embodiment of the present invention. Only one terminal module 2 and the cable 8 connected thereto are shown in the figure. In this embodiment, only the structures of the conductive shielding member 3 and the conductive grounding member 4 are different from those of the previous embodiment. Except for this, other structures are the same as those of the previous embodiment. In this embodiment, the shielding main body parts 31 of the conductive shielding member 3 are not connected to each other, but are independently arranged. That is to say, in this embodiment, the shielding main body part 31 only has the shielding part 312 and does not have the base body 311 connecting the shielding part 312. The difference between the conductive grounding member 4 and the previous embodiment is that the length of its grounding main body part in the up-down direction is larger, so as to replace the structure of the base body 311 in the previous embodiment to connect the shielding parts 312 in series. In addition, no groove 3111 is provided on the conductive shielding member in this embodiment, and the grounding main body part 41 and the shielding main body part 31 are fixedly contacted and electrically conducted by laser spot welding or other means.

[0043] In summary, the present invention has the following beneficial effects:

[0044] 1. In the present invention, the above-mentioned grounding contact portion 43 is disposed below the extension portion 32 and is spaced apart from the extension portion 32, and the grounding main body portion 41 is in contact with and electrically conducts with the shielding main body portion 31; 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 downward against the docking element 200, but also the grounding contact portion 43 is arranged to abut upward against the extension portion 32; therefore, when viewed in the left-right direction, 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. Thus, for the signal terminal 21, its signal contact portion 213 can also be shielded, reducing the interference received by the signal terminal 21 and at the same time avoiding 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 grounding contact portion 43 and the extension portion 32, so that when viewed in the left-right direction, a very small part of the signal contact portion 213 is exposed from this gap. Therefore, the fact that the projection of the above-mentioned grounding contact portion 43 and the projection of the extension portion 32 completely cover the projection of the signal contact portion 213 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 due to errors and has little or negligible impact on the shielding of the signal terminal 21.

[0045] 2. Before the electrical connector 100 is electrically connected to the docking element 200, the grounding compensation portion 42 is abutted against the signal contact portion 213, so that the grounding compensation portion 42 has the largest shielding area, further reducing signal crosstalk; and further, the grounding compensation portion 42 and the grounding contact portion 43 are spaced apart left and right, so as to ensure the elasticity of the grounding compensation portion 42, so that when it abuts against the signal contact portion 213, it will not damage the signal contact portion 213 due to excessive abutting force, and at the same time, the elasticity of the grounding contact portion 43 is also ensured, so that the elastic contact between the grounding contact portion 43 and the docking element 200 is stable.

[0046] 3. A part of the signal elastic part 212 is located within the shielding cavity 33, and another part is located within the relief groove 34, such that the elastic deformation of the signal terminal 21 occurs almost entirely within the shielding range of the conductive shielding member 3, thereby further reducing signal crosstalk. The forward penetration of the shielding cavity 33 and the backward penetration of the relief groove 34 are to prevent the signal terminal 21 from coming into contact and short-circuiting with the conductive shielding member 3. Further, the provision of the relief groove 34 also makes full use of the space inside the electrical connector 100. Additionally, in order to prevent signal leakage at the position of the backward-penetrating relief groove 34 from interfering with the transmission of other signals, the grounding main body 41 of the conductive grounding member 4 is provided to enclose the opening formed by the backward penetration of the relief groove 34 and is also received within the groove 3111 of the base body 311, thereby ensuring that at the position of the relief groove 34, signal leakage interference with 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 and extend upwardly the extension part 32. The grounding elastic part 431 is located between the grounding free end 432 and the bottom end 411, and the grounding elastic part 431 abuts downwardly against the docking element 200. The position settings of the respective abutting positions among the above structures make 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.

[0048] 5. The conductive shielding member 5 has a connecting part 51 located in front of the extension part 32 and in contact with the extension part 32, and the connecting part 51 contacts the grounding contact part 43 downwardly, thereby increasing the grounding return path and reducing signal crosstalk.

[0049] 6. The front end surface of the shielding compensation part 321 extends forward beyond the signal free end 215, thereby further shielding the signal terminal 21 and reducing signal crosstalk.

[0050] 7. Since the front lead contact surface 2141 contacts a conducting body, along the front-rear direction, the front end surface of the shielding part 312 at the position of the signal conducting part 214 is provided to extend forward beyond the front end surface of the shielding part 312 at the position of the signal main body part 211, thereby achieving a better shielding effect on the signal conducting part 214 and the conducting body.

[0051] 8. The conductive shielding member 3 further shields the signal conducting part 214, and a cured conductive adhesive Q is also provided to electrically connect the shielding layer 82 of the cable 8 and the conductive shielding member 3, thereby increasing the grounding return path to reduce crosstalk. Additionally, when viewed along the front-rear direction, there is a cable transition section 84 between the lower surface of the conductive adhesive Q and the electrical connection part 811, preventing the conductive adhesive Q from flowing downward during the curing process and contacting the wire core 81 to cause a short circuit.

[0052] The above detailed description is only for the description of the preferred embodiments of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the content of this creative specification and illustrations are included in the patent scope of this creation.

Claims

1. An electrical connector that abuts downward against a mating component, comprising: a housing and a terminal module received in the housing. The housing has an outer bottom surface facing the mating component. The terminal module includes: signal terminals having a signal body portion and a signal contact portion extending downward from the signal body portion; a conductive shield having a shield body portion and an extension portion extending downward from the shield body portion; a conductive grounding member having a grounding body portion and an elastic grounding contact portion extending downward from the grounding body portion; wherein both the signal contact portion and the grounding contact portion protrude downward 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 body portion is in contact with and electrically conducts with the shield body portion; after the electrical connector is electrically connected to the mating component, both the signal contact portion and the grounding contact portion abut downward against the mating component, and the grounding contact portion abuts upward against the extension portion; when viewed in the left - right direction, the projection of the grounding 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 extends downward and obliquely toward the signal contact portion from the grounding body portion. Before the electrical connector is electrically connected to the mating component, the grounding compensation portion abuts against the signal contact portion. After the electrical connector is electrically connected to the mating component, 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 is spaced apart from the grounding contact portion in the left - right direction.

4. The electrical connector according to claim 1, wherein: Two extensions spaced apart in the left - right direction extend downward from the shield body portion. There is a shielding cavity penetrating forward and a relief groove penetrating backward between the adjacent two extensions. The base is aligned with the relief groove up and down. The signal contact portion and the signal body portion are connected by a signal elastic portion, and a part of the signal elastic portion is located in the shielding cavity and another part is located in the relief groove.

5. The electrical connector according to claim 4, wherein: The shield body portion includes a base and a shielding portion extending forward from the base; when viewed in the left - right direction, the projection of the signal body portion is located within the projection of the shielding portion; when viewed in the front - back direction, the projection of the signal body portion is located within the projection of the base; a groove penetrating downward is provided on a side of the base facing away from the shielding portion, and a part of the grounding body portion is received in the groove, and another part of the grounding body portion closes an opening formed by the backward penetration of the relief groove.

6. The electrical connector according to claim 1, characterized in that: The grounding contact portion includes a grounding elastic portion and a grounding free end located in front of the grounding elastic portion. The grounding 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 mating component, the grounding free end and the bottom end abut upward against the extension portion, and the grounding elastic portion abuts downward against the mating component.

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

8. The electrical connector according to claim 1, characterized in that: The signal contact portion elastically abuts against the mating component, and the signal terminal has a signal free end. The signal contact portion is located between the signal free end and the signal body portion. The extension portion includes a shielding compensation portion, and the front end of the shielding compensation portion extends forward beyond the signal free end.

9. The electrical connector according to claim 1, characterized in that: The shielding main body includes a base body and a shielding portion extending forward from the base body; when viewed in the left-right direction, the projection of the signal main body is located within the projection of the shielding portion; when viewed in the front-rear direction, the projection of the signal main body is located within the projection of the base body; the signal terminal has a signal connection portion extending upward from the signal main body, and when viewed in the left-right direction, the projection of the signal connection portion is located within the projection of the shielding portion; when viewed in the front-rear direction, the projection of the signal connection portion is located within the projection of the base body; the signal connection portion has a front connection surface that contacts a connection body, wherein the front end surface of the shielding portion at the position of the signal connection portion extends forward beyond the front end surface of the shielding portion at the position of the signal main body.

10. The electrical connector according to claim 1, wherein: The shielding main body includes a base body and a shielding portion extending forward from the base body; when viewed in the left-right direction, the projection of the signal main body is located within the projection of the shielding portion; when viewed in the front-rear direction, the projection of the signal main body is located within the projection of the base body; the signal terminal has a signal connection portion extending upward from the signal main body, and when viewed in the left-right direction, the projection of the signal connection portion is located within the projection of the shielding portion; when viewed in the front-rear direction, the projection of the signal connection portion is located within the projection of the base body; a cable, having 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 connection portion, and a part of the shielding layer is exposed outside the insulating layer; a conductive adhesive, cured and contacting the part of the shielding layer exposed outside the insulating layer and the front surface of the shielding portion, and when viewed in the front-rear direction, there is a cable transition section between the lower surface of the conductive adhesive and the electrical connection portion.

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