Electrical connectors

Abstract

This invention discloses an electrical connector for electrically connecting a first electrical component, comprising: an insulating body having a mating groove for mating the first electrical component, having a first inner wall and a second inner wall facing each other vertically, the first inner wall having a first surface and a second surface facing the second inner wall, the first surface being closer to the second inner wall than the second surface; a grounding terminal fixed to the insulating body having a first contact portion exposed on the first surface; and a grounding member fixed to the insulating body having a second contact portion and a third contact portion, both exposed on the second surface, the second contact portion being closer to the second inner wall than the first surface, and the third contact portion being farther away from the second inner wall than the first surface in the vertical direction. The second contact portion grounds and conducts to the first electrical component within the mating groove to form a first grounding loop, the first contact portion being connected to the first grounding loop, and the third contact portion being grounded and connected to the first electrical component within the mating groove to form a second grounding loop.

Description

[0001] This application is a divisional application of Chinese invention patent application No. "201910693159.9", filed on July 18, 2019, entitled "Electrical Connector". Technical Field

[0002] This invention relates to an electrical connector, and more particularly to an electrical connector for reducing resonance. Background Technology

[0003] A conventional electrical connector has an insulating body and a mating groove for receiving a mating connector. The mating connector has multiple signal contacts and multiple ground contacts. The insulating body is fixed with multiple ground terminals and multiple pairs of signal terminals, which are arranged alternately in a row. Each ground terminal is electrically connected to each ground contact within the mating groove, and each signal terminal is electrically connected to each signal contact within the mating groove. A metal member is fixed to the insulating body and has multiple elastic arms, each elastic arm corresponding to one of the ground contacts.

[0004] However, since the contact positions of the elastic arm, the grounding terminal, and the corresponding contact are on the same plane, the electromagnetic waves of the elastic arm and the grounding terminal are prone to resonate within the mating groove, thereby affecting the signal transmission of the electrical connector.

[0005] Therefore, it is necessary to design a new electrical connector to overcome the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide an electrical connector that adjusts the resonance of the electrical connector by means that at least one contact portion in the grounding member is not on the same horizontal plane as the contact portion of the grounding terminal.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an electrical connector, electrically connecting a first electrical component, comprising: an insulating body having a mating groove for mating the first electrical component, the mating groove having a first inner wall and a second inner wall facing each other vertically, the first inner wall having a first surface and a second surface facing the second inner wall, the first surface being closer to the second inner wall relative to the second surface; a grounding terminal fixed to the insulating body having a first contact portion exposed on the first surface; a grounding member fixed to the insulating body having a second contact portion and a third contact portion, both exposed on the second surface, the second contact portion being closer to the second inner wall relative to the first surface, and the third contact portion being farther away from the second inner wall relative to the first surface in the vertical direction, the second contact portion being grounded and connected to the first electrical component in the mating groove to form a first grounding loop, the first contact portion being connected to the first grounding loop, and the third contact portion being grounded and connected to the first electrical component in the mating groove to form a second grounding loop.

[0008] Furthermore, the docking groove is forward-facing the first electrical component, the first surface is located in front of the second surface, and the third contact portion, the second contact portion, and the first contact portion are arranged sequentially at intervals.

[0009] Furthermore, it further includes a fourth contact portion disposed on the second inner wall, wherein the fourth contact portion and the third contact portion are disposed opposite each other in the mating groove, and the distance between the third contact portion and the fourth contact portion is greater than the distance between the first contact portion and the second inner wall.

[0010] Furthermore, the grounding terminal has a forward-extending first contact arm with a first contact portion, and the grounding member has a rearward-extending second contact arm located in front of the corresponding first contact arm with a second contact portion, and the length of the first contact arm is greater than the length of the second contact arm.

[0011] Furthermore, the grounding member has a forward-extending third contact arm, the third contact arm having a third contact portion, and the length of the second contact arm is greater than the length of the third contact arm.

[0012] Furthermore, the grounding member has a connecting portion disposed above the insulating body, a second contact arm extending rearward from the connecting portion, and a third contact arm extending forward from the connecting portion. The insulating body has a through groove that extends vertically and downward through the first inner wall. The through groove is located below the connecting portion, and the second contact arm and the third contact arm extend downward through the through groove and are exposed on the second surface.

[0013] Furthermore, the grounding member has a plurality of elastic portions arranged in a left-right direction, each elastic portion being formed by a second contact arm, a third contact arm, and a connecting portion connecting the second contact arm and the third contact arm, and further having a row of terminals having a plurality of pairs of signal terminals and a plurality of grounding terminals, with a grounding terminal behind each elastic portion, and an extension line of the signal terminals extending forward between every two elastic portions.

[0014] Furthermore, the grounding component is a metal shell covering the insulating body. The grounding component has an upper wall disposed on the upper surface of the insulating body. The upper wall has a cavity that extends vertically through the body. A row of elastic portions is disposed in the cavity. Multiple spacer portions extend forward from the rear surface of the cavity. The multiple elastic portions and multiple connecting portions are alternately arranged in the left-right direction, and each spacer portion connects two adjacent connecting portions.

[0015] Furthermore, each of the spacers covers the top of a pair of signal terminals, and the distance between two adjacent spacers is greater than the distance between two adjacent pairs of signal terminals.

[0016] The present invention adopts another technical solution as follows: an electrical connector, electrically connected to a first electrical component, comprising:

[0017] An insulating body having a front-opening mating groove for receiving the first electrical component, the mating groove having a first inner wall;

[0018] A grounding terminal is fixed inside the insulating body and has a first contact arm, which is partially exposed on the first inner wall and connected to the ground of the first electrical component.

[0019] A grounding component is fixed to the insulating body. The grounding component has a second contact arm and a third contact arm, both of which are partially exposed on the first inner wall and grounded and connected to the first electrical element. The second contact arm and the third contact arm are positioned forward relative to the first contact arm, and the lengths of the second contact arm and the third contact arm are different.

[0020] Furthermore, each of the first contact arm, each of the second contact arm and each of the third contact arm has a first contact portion, a second contact portion and a third contact portion respectively connected to the ground of the first electrical element. The first contact portion and the second contact portion are located on the same horizontal plane, and the second contact portion and the third contact portion are located on different horizontal planes.

[0021] Furthermore, it further includes a second inner wall, with the first inner wall and the second inner wall facing each other in the vertical direction. The first inner wall has a first surface and a second surface facing the second inner wall, with the second surface being away from the second inner wall relative to the first surface. The first contact portion is exposed on the first surface, and the second contact portion and the third contact portion are both exposed on the second surface. The distance between the first contact portion and the second inner wall is equal to the distance between the second contact portion and the second inner wall, and the second contact portion is closer to the second inner wall relative to the third contact portion.

[0022] Furthermore, the fourth contact portion of the grounding component is exposed on the second inner wall and is grounded and connected to the first electrical component. The third contact portion and the fourth contact portion are arranged vertically opposite each other, and the distance between the third contact portion and the fourth contact portion is greater than the distance between the first contact portion and the second inner wall.

[0023] Furthermore, the length of the first contact arm is greater than the length of the second contact arm, and the length of the second contact arm is greater than the length of the third contact arm.

[0024] Furthermore, the grounding member has a connecting portion disposed above the insulating body, a second contact arm extending rearward from the connecting portion, and a third contact arm extending forward from the connecting portion. The insulating body has a through groove that extends vertically and through the first inner wall, located below the connecting portion, with the second contact arm and the third contact arm extending downward through the through groove and exposed on the first inner wall.

[0025] Furthermore, the grounding member has a plurality of elastic portions arranged in a left-right direction, each elastic portion being formed by a second contact arm, a third contact arm, and a connecting portion connecting the second contact arm and the third contact arm, and further having a row of terminals having a plurality of pairs of signal terminals and a plurality of grounding terminals, with a pair of signal terminals between every two grounding terminals, and an extension line of the signal terminals extending forward between every two elastic portions.

[0026] Furthermore, the grounding component is a metal shell covering the insulating body. The grounding component has an upper wall disposed on the upper surface of the insulating body. The upper wall has a cavity that extends vertically through the body. A row of elastic parts is disposed in the cavity. Multiple spacer parts extend forward from the rear surface of the cavity. The multiple elastic parts and multiple connecting parts are alternately arranged from left to right, and each spacer part connects two adjacent connecting parts.

[0027] Furthermore, each of the spacers covers the top of a pair of signal terminals, and the distance between two adjacent spacers is greater than the distance between two adjacent pairs of signal terminals.

[0028] Compared with the prior art, the insulating body of the first technical solution of the present invention has a first surface and a second surface higher than the first surface. The first contact portion of the grounding terminal is exposed on the first surface, and the second and third contact portions of the grounding element are exposed on the second surface. The second contact portion and the first electrical element form a first grounding circuit in the mating groove. The first contact portion is electrically connected to the first grounding circuit. The third contact portion and the first electrical element form a second grounding circuit. Since the third contact portion is far away from the second inner wall relative to both the first and second contact portions, the first electrical element is more conductive during insertion. The parts that contact the first and second contact portions will not come into contact with the third contact portion during insertion, thereby reducing the insertion force. At the same time, the first grounding circuit and the second grounding circuit are located at different heights in the docking groove, so that the peaks of the electromagnetic waves of the first grounding circuit and the second grounding circuit do not overlap, thereby reducing grounding resonance. Furthermore, the first contact portion is connected to the first grounding circuit, allowing the charge on the first contact portion to be transferred to the grounding component through the first grounding circuit, thereby reducing the grounding resonance generated in the docking groove when the grounding terminal is docked with the first electrical component.

[0029] In another technical solution of the invention, the grounding component has a second contact arm and a third contact arm exposed in the docking groove for grounding and conducting with the first electronic component. The second contact arm and the third contact arm have different lengths, so that the peak of the electromagnetic wave on the second contact arm and the peak of the electromagnetic wave on the third contact arm will not overlap, thereby reducing the grounding resonance in the docking groove. Attached Figure Description

[0030] Figure 1 This is an exploded perspective view of the electrical connector according to the first embodiment of the present invention;

[0031] Figure 2 This is a top view of the electrical connector according to the first embodiment of the present invention;

[0032] Figure 3 for Figure 2 A sectional view taken along section AA;

[0033] Figure 4 for Figure 2 A sectional view taken along section BB;

[0034] Figure 5 This is a planar sectional view of an electrical connector according to a second embodiment of the present invention.

[0035] Explanation of reference numerals in the accompanying drawings for the specific implementation methods:

[0036] Detailed Implementation

[0037] To facilitate a better understanding of the purpose, structure, features, and effects of this invention, the invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0038] Please see Figure 1 , Figure 2 and Figure 3 This is an electrical connector 100 according to the first embodiment of the present invention. The electrical connector 100 has an insulating body 1 and a mating groove 10 with a forward opening for receiving an electronic card 200. A row of terminals is fixed to the insulating body 1, and a portion of each terminal is exposed in the mating groove 10 and electrically contacts the electronic card 200. Another portion of each terminal extends rearward out of the insulating body 1 and is electrically connected to a circuit board (not shown), thereby enabling the terminal to transmit the signal of the electronic card 200 to the circuit board (not shown) to achieve the function of signal transmission. A metal shell 3 covers the insulating body 1 for shielding.

[0039] Please see Figure 1 , Figure 3 and Figure 4 The electronic card 200 has an insertion end 201 and a row of contact heads 202 housed in the docking slot 10. The row of contact heads 202 has multiple pairs of signal contacts 202a and multiple pairs of ground contacts 202b. Each pair of signal contacts 202a has a ground contact 202b on each side. A portion of each pair of contact heads 202 is exposed on the insertion end 201 and makes electrical contact with the corresponding terminal. The electronic card 200 further has a first shielding plate 203 and a second shielding plate 204. The row of contact heads 202 is located between the first shielding plate 203 and the second shielding plate 204. The first shielding plate 203 is spaced above the row of contact heads 202, and the second shielding plate 204 is spaced below the row of contact heads 202.

[0040] Please see Figure 1 , Figure 3 and Figure 4The mating groove 10 is recessed from the front surface of the insulating body 1. The insulating body 1 has an upper plate 11, a lower plate 12, and two side plates 13 connecting the upper plate 11 and the lower plate 12. The upper plate 11, the lower plate 12, and the two side plates 13 surround the mating groove 10. The side of the upper plate 11 facing the mating groove 10 forms a first inner wall 110, and the side of the lower plate 12 facing the mating groove 10 forms a second inner wall 120. The first inner wall 110 and the second inner wall 120 are arranged parallel vertically. The first inner wall 110 has a first surface 1101 and a second surface 1102. The first surface 1101 is lower than the second surface 1102, thus being closer to the second inner wall 120. When the electronic card 200 is inserted into the docking slot 10, the contact head 202 is vertically aligned with the first surface 1101. The first shielding plate 203 is housed within the stepped space formed by the first surface 1101 and the second surface 1102 and is vertically aligned with the second surface 1102. The second shielding plate 204 is vertically aligned with the second inner wall 120. The first surface 1101 has multiple terminal slots 14 arranged in a row in the left-right direction, and multiple through slots 15 that penetrate vertically through the upper plate 11 and forward through the front surface of the upper plate 11. The insulating body 1 has multiple ribs 16, with one rib 16 between two adjacent through slots 15.

[0041] Please see Figure 1 , Figure 3 and Figure 4 The second inner wall 120 has a notch 17 that extends vertically through the lower plate 12 and forward through the front surface of the lower plate 12. The notch 17 is located below a row of through slots 15 and a row of ribs 16.

[0042] Please see Figure 2 , Figure 3 and Figure 4 Each row of terminals has multiple pairs of signal terminals S and multiple ground terminals G, with a ground terminal G on both sides of each pair of signal terminals S. Each terminal has a horizontally arranged fixing part 21 fixed to the rear end of the insulating body 1. A first contact arm 22 extends forward from the fixing part 21 and is received in the terminal slot 14. The first contact arm 22 has a first contact part 220 protruding into the mating slot 10 and making electrical contact with the mating head 202. A welding part 23 extends rearward from the fixing part 21. The welding part 23 bends downward and then bends rearward to extend out of the insulating body 1 and is welded to the surface of the circuit board (not shown).

[0043] Please see Figure 1 , Figure 2 and Figure 3 The metal shell 3 covers the insulating body 1. The metal shell 3 has an upper wall 31 and a lower wall 32 that are parallel to each other, and two side walls 33 connecting the upper wall 31 and the lower wall 32. The upper wall 31 covers the upper surface of the upper plate 11. The upper wall 31 has a recessed cavity 310 from front to back and a row of elastic parts F arranged in the left-right direction in the recessed cavity 310. The elastic parts F are recessed above the row of through slots 15, and each elastic part F is correspondingly received in each through slot 15. Each of the elastic parts F has a connecting part 311, which is located above each of the through slots 15. A second contact arm 312 extends backward from the connecting part 311. The second contact arm 312 passes through the through slot 15 from top to bottom and enters the mating groove 10. It protrudes from the second surface 1102 to form a second contact part 3120, which contacts a corresponding grounding contact 202b. A first grounding circuit C1 is formed in the mating groove 10. The charge on the grounding contact 202b can be transferred to the metal shell 3 through the second contact arm 312, thereby reducing the charge on the corresponding grounding contact 202b. That is, the charge on the first grounding circuit C1 is transferred out of the mating groove 10 through the first contact arm 22, avoiding the charge on the first grounding circuit C1 from forming interfering electromagnetic waves and affecting signal transmission. Each second contact arm 312 is spaced in front of the first contact arm 22 of a grounding terminal G. Each second contact portion 3120 and the first contact portion 220 of a grounding terminal G are at the same horizontal level and abut against the same grounding contact 202b, such that the potential difference between the corresponding grounding contact 202b from the second contact portion 3120 to the first contact portion 220 is 0, thereby reducing the resonance generated when the grounding contact 202b is connected to the terminal in the mating groove 10.

[0044] Please see Figure 1 , Figure 2 and Figure 3 A row of elastic portions F are spaced apart from left to right, thereby a row of second contact arms 312 are spaced apart from left to right, and each second contact arm 312 is located in front of a corresponding grounding terminal G. The length of the first contact arm 22 is greater than the length of the second contact arm 312. Between each pair of adjacent second contact arms 312, there are two forward-extending extension lines X of a pair of signal terminals S. A pair of signal contacts 202a are located between two adjacent second contact arms 312 and contact the pair of signal terminals S backward, so that the two opposing second contact arms 312 can shield the pair of signal contacts 202a located in the middle, which is beneficial to high-frequency performance.

[0045] Please see Figure 1 , Figure 2 and Figure 3 A third contact arm 313 extends forward from the connecting portion 311 and is located in front of the second contact arm 312. The third contact arm 313 passes through the corresponding through groove 15 from top to bottom and enters the docking groove 10. It protrudes from the second surface 1102 to form a third contact portion 3130 that makes electrical contact with the first shielding plate 203. The third contact arm 313 and the first shielding plate 203 form a second grounding circuit C2 in the docking groove 10. The charge on the second shielding plate 204 is transmitted out of the docking groove 10 through the third contact arm 313, so as to avoid the charge on the first shielding plate 203 forming electromagnetic interference waves that affect the signal transmission in the docking groove 10. The third contact portion 3130 is higher than the second contact portion 3120, and the length of the third contact arm 313 is shorter than the length of the second contact arm 312. This prevents the electromagnetic waves of the first grounding circuit C1 and the second grounding circuit C2 from overlapping within the mating groove 10, thereby reducing grounding resonance within the mating groove 10 and thus reducing signal loss when the electrical connector 100 mates with the electronic card 200. Simultaneously, the height of the third contact portion 3130 is greater than the heights of the first contact portion 220 and the second contact portion 3120, ensuring... During the insertion of the electronic card 200, the insertion end 201 will not contact the third contact portion 3130, thereby reducing the insertion force and preventing the signal contact 202a exposed on the insertion end 201 from making electrical contact with the third contact portion 3130. This avoids short circuits in the signal contact 202a, as short circuits generate extremely large instantaneous currents that can damage the performance of the signal contact 202a. Therefore, preventing the third contact portion 3130 from contacting the signal contact 202a better protects the signal contact 202a.

[0046] Please see Figure 1 , Figure 2 and Figure 3Multiple elastic portions F are arranged in rows at equal intervals along the left-right direction within the cavity 310. Multiple flat spacer portions 314 extend forward from the rear wall of the cavity 310. Each spacer portion 314 extends forward and is located between and connects two adjacent elastic portions F, ensuring that the multiple elastic portions F maintain the same potential. This prevents potential differences between the multiple elastic portions F from generating interfering electromagnetic waves that could affect the signal transmission of the electrical connector 100. Furthermore, each rib 16 supports each spacer portion 314 upwards, ensuring good fixation of the spacer portions 314 and helping to keep them on the same horizontal plane. This also enhances the fixation between the metal shell 3 and the insulating body 1. Each spacer portion 314 is located above a pair of signal terminals S, and the distance between two adjacent spacer portions 314 is greater than the distance between two adjacent pairs of signal terminals S. This prevents signal leakage caused by the lack of shielding above a pair of signal terminals S, thus improving the high-frequency performance of the electrical connector 100.

[0047] Please see Figure 1 , Figure 2 and Figure 3 The lower wall 32 covers the lower surface of the lower plate 12 and has a fourth contact arm 321. The fourth contact arm 321 protrudes from the second inner wall 120 through the notch 17 from bottom to top, forming a fourth contact portion 3210, which is grounded and connected to the second shielding sheet 204. The charge on the second shielding sheet 204 is transferred to the metal shell 3 outside the docking groove 10 through the fourth contact arm 321, thereby reducing the interference electromagnetic waves in the docking groove 10. The third contact portion 3130 and the fourth contact portion 3210 are arranged vertically opposite each other, and the distance L2 between the third contact portion 3130 and the fourth contact portion 3210 is greater than the distance L1 between the first contact portion 220 and the second inner wall 120. This ensures that during the insertion of the insertion end 201 into the docking groove 10, the signal contact 202a on the insertion end 201 will not come into contact with the third contact portion 3130 and the fourth contact portion 3210, thus preventing a short circuit of the signal contact 202a.

[0048] Please see Figure 1 , Figure 2 and Figure 3 Each of the sidewalls 33 is torn to form a pin 330, which is grounded and connected to the circuit board (not shown), transferring the charge on the metal shell 3 to the circuit board (not shown), which is beneficial to the shielding effect of the metal shell 3.

[0049] Please see Figure 5This is the second embodiment of the present invention. The only difference between this embodiment and the electrical connector 100 is that the second contact arm 312 does not abut against the grounding contact 202b, but abuts against the first contact arm 22 of the corresponding grounding terminal G, so that the charge on the first contact arm 22 is transferred out of the mating groove 10 through the second contact arm 312, thereby preventing the first contact arm 22 of the grounding terminal G from generating interfering electromagnetic waves.

[0050] In summary, the electrical connector of the present invention has the following beneficial effects:

[0051] 1. The height of the third contact portion 3130 is higher than that of the second contact portion 3120, and the length of the third contact arm 313 is shorter than that of the second contact arm 312. This prevents the electromagnetic waves of the first grounding circuit C1 and the second grounding circuit C2 from overlapping within the mating groove 10, thereby reducing grounding resonance within the mating groove 10 and thus reducing signal loss when the electrical connector 100 mates with the electronic card 200. Simultaneously, the height of the third contact portion 3130 is greater than that of the first contact portion 220 and the second contact portion 3120. This design ensures that during the insertion of the electronic card 200, the insertion end 201 will not come into contact with the third contact portion 3130, thereby reducing the insertion force. It also prevents the signal contact 202a exposed on the insertion end 201 from making electrical contact with the third contact portion 3130, thus avoiding a short circuit in the signal contact 202a. Since a short circuit would generate a very large instantaneous current, which could damage the performance of the signal contact 202a, preventing the third contact portion 3130 from contacting the signal contact 202a can better protect the signal contact 202a.

[0052] 2. The second contact arm 312 passes through the through groove 15 from top to bottom and enters the mating groove 10. It protrudes from the second surface 1102 to form a second contact part 3120, which contacts a corresponding grounding contact 202b. A first grounding circuit C1 is formed in the mating groove 10. The charge on the grounding contact 202b can be transferred to the metal shell 3 through the second contact arm 312, thereby reducing the charge on the corresponding grounding contact 202b. That is, the charge on the first grounding circuit C1 is transferred out of the mating groove 10 through the first contact arm 22, so as to avoid the charge on the first grounding circuit C1 forming electromagnetic interference waves and affecting the signal transmission.

[0053] 3. Each second contact arm 312 is located in front of the first contact arm 22 of a grounding terminal G. Each second contact portion 3120 and the first contact portion 220 of a grounding terminal G are at the same horizontal level and abut against the same grounding contact 202b, so that the potential difference between the corresponding grounding contact 202b from the second contact portion 3120 to the first contact portion 220 is 0, thereby reducing the resonance generated when the grounding contact 202b is connected to the terminal in the mating groove 10.

[0054] 4. The lower wall 32 has a fourth contact arm 321, which protrudes from the second inner wall 120 through the notch 17 from bottom to top, forming a fourth contact portion 3210. It is grounded and connected to the second shielding plate 204. The charge on the second shielding plate 204 is transferred to the metal shell 3 outside the docking groove 10 through the fourth contact arm 321, thereby reducing the interference electromagnetic waves in the docking groove 10. The third contact portion 3130 and the fourth contact portion 3210 are arranged vertically opposite each other, and the distance L2 between the third contact portion 3130 and the fourth contact portion 3210 is greater than the distance L1 between the first contact portion 220 and the second inner wall 120. This ensures that during the insertion of the insertion end 201 into the docking groove 10, the signal contact 202a on the insertion end 201 will not come into contact with the third contact portion 3130 and the fourth contact portion 3210, thus preventing a short circuit of the signal contact 202a.

[0055] The above detailed description is only an illustration of a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. An electrical connector electrically connected to a first electrical element, characterized in that, include: An insulating body has a mating groove for engaging the first electrical component. The mating groove has a first inner wall and a second inner wall facing each other. The first inner wall has a first surface and a second surface facing the second inner wall. The first surface is closer to the second inner wall than the second surface. A grounding terminal is fixed to the insulating body. The grounding terminal has a first contact arm extending forward. The first contact arm has a first contact portion exposed on the first surface. as well as A grounding component is fixed to the insulating body. The grounding component has a second contact portion and a third contact portion, both exposed on the second surface. The second contact portion is closer to the second inner wall relative to the first surface, and the third contact portion is farther away from the second inner wall relative to the first surface in the vertical direction. The second contact portion is grounded and connected to the first electrical component within the mating groove to form a first grounding loop. The first contact portion is connected to the first grounding loop, and the third contact portion is grounded and connected to the first electrical component within the mating groove to form a second grounding loop. The grounding component has a connecting portion located above the insulating body. The insulating body has a through groove extending vertically through the grounding component. The through groove is located below the connecting portion. A second contact arm passes through the through groove from top to bottom and enters the mating groove, protruding from the second surface to form a second contact portion. Each second contact arm is spaced in front of the first contact arm of a grounding terminal. Each second contact portion and the first contact portion of a grounding terminal are located at the same horizontal level and abut against the same grounding contact. The second contact portion is at the same horizontal level as the first contact portion, and the third contact portion is at a higher height than the second contact portion.

2. The electrical connector according to claim 1, characterized in that, A third contact arm passes through the through groove from top to bottom and enters the docking groove, protruding from the second surface to form the third contact portion.

3. The connector according to claim 1, characterized in that, The first contact portion is closer to the second inner wall than the third contact portion.

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