Electric connector

Abstract

The utility model discloses an electric connector, which comprises an insulating seat body, a first row of terminals and a second row of terminals are arranged on the insulating seat body and are positioned on the same side of a slot along the left-right direction; the first row of terminals comprises first grounding terminals and first signal terminals which are alternately arranged in the front-back direction, and the second row of terminals comprises second signal terminals which are arranged corresponding to the first grounding terminals in the up-down direction and second grounding terminals which are arranged corresponding to the first signal terminals in the up-down direction. The first grounding shielding part of the first grounding terminal abuts against the first grounding arm so as to form a closed ring together with the first grounding bending part and the first grounding contact part to shield the second signal terminal in the vertical direction. The second grounding shielding part of the second grounding terminal abuts against the second grounding arm to form a closed ring together with the second grounding bending part and the second grounding contact part so as to shield the first signal terminal in the vertical direction, and the high-frequency performance of the electric connector is improved.

Description

Technical Field

[0001] This utility model relates to an electrical connector, and more particularly to an electrical connector that can improve high-frequency performance. Background Technology

[0002] An existing electrical connector for inserting electronic cards includes: a body, a recessed slot for inserting an electronic card, and two rows of terminals on one side of the slot in a left-right direction, wherein signal terminals in the upper row of terminals correspond to signal terminals in the lower row of terminals, ground terminals in the upper row of terminals correspond to ground terminals in the lower row of terminals, and the ground terminal has an elastic portion, a bent portion extending from the upper end of the elastic portion toward the slot, and a contact portion connected to the bent portion and extending into the slot.

[0003] However, since the signal terminals in the upper row correspond to the signal terminals in the lower row, and the ground terminals in the upper row correspond to the ground terminals in the lower row, the misalignment of the ground terminals and signal terminals means that the ground terminals cannot effectively shield the signal terminals, resulting in mutual signal interference between the upper and lower row signal terminals. Moreover, since the ground terminal only has one conductive path, the ground return path is too long, making it difficult to quickly conduct noise signals to the main circuit board. This makes it difficult to reduce the resonance generated by the signal terminals during signal transmission, resulting in poor high-frequency performance of the electrical connector.

[0004] Therefore, it is necessary to design an electrical connector that can improve high-frequency performance in order to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to improve the shielding effect of the first and second grounding terminals by having the first grounding shield abut against and cover the upper part of the corresponding second signal terminal, and the second grounding shield abut against and cover the lower part of the corresponding first signal terminal. This results in an additional return path for each of the first and second grounding terminals, improving their shielding effect. Furthermore, the first and second grounding shields form shorter return paths with the first and second grounding arms, respectively, optimizing resonance and improving the integrity of signal transmission, thereby enhancing the high-frequency performance of the electrical connector.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides an electrical connector for inserting an electronic card, comprising:

[0008] An insulating base has a slot recessed downward from its upper surface for inserting the electronic card.

[0009] The first row of terminals and the second row of terminals are disposed on the insulating base and are located on the same side of the slot in the left-right direction; the first row of terminals includes a first ground terminal and a first signal terminal arranged alternately in the front-back direction, the first signal terminal has a first signal contact portion extending into the slot, the first ground terminal has a first ground arm, a first ground bending portion extending from the upper end of the first ground arm toward the slot, a first ground contact portion connected to the end of the first ground bending portion away from the first ground arm and extending into the slot, and a first ground shield portion extending from the lower end of the first ground contact portion toward the first ground arm;

[0010] The second row of terminals is located below the first grounding shield and the first signal contact. The second row of terminals includes a second signal terminal and a second grounding terminal that are arranged in the vertical direction corresponding to the first grounding terminal. The second signal terminal has a second signal contact that extends into the slot. The second grounding terminal has a second grounding arm, a second grounding bend that bends and extends from the upper end of the second grounding arm toward the slot, a second grounding contact that is connected to the end of the second grounding bend that is away from the second grounding arm and extends into the slot, and a second grounding shield that bends and extends from the lower end of the second grounding contact toward the second grounding arm.

[0011] When the electronic card is inserted into the slot and comes into contact with the first signal contact, the first ground contact, the second signal contact, and the second ground contact, the first ground shield abuts against the first ground arm to form a closed ring together with the first ground bend and the first ground contact to shield the second signal terminal in the vertical direction. The second ground shield abuts against the second ground arm to form a closed ring together with the second ground bend and the second ground contact to shield the first signal terminal in the vertical direction.

[0012] Furthermore, the slot is provided with a first row of terminals and a second row of terminals on both the left and right sides. The first grounding terminal in the first row of terminals on the left side of the slot and the first signal terminal in the first row of terminals on the right side of the slot are arranged facing each other in the left-right direction to shield the first signal terminal in the left-right direction. The second grounding terminal in the second row of terminals on the left side of the slot and the second signal terminal in the second row of terminals on the right side of the slot are arranged facing each other in the left-right direction to shield the second signal terminal in the left-right direction.

[0013] Furthermore, the first signal terminal also includes a first signal arm, a first signal bending portion extending from the upper end of the first signal arm toward the slot, a first signal contact portion connected to the first signal bending portion, and a first signal abutment portion extending from the lower end of the first signal contact portion toward the first signal arm; the second signal terminal also includes a second signal arm, a second signal bending portion extending from the upper end of the second signal arm toward the slot, a second signal contact portion connected to the second signal bending portion, and a second signal abutment portion extending from the lower end of the second signal contact portion toward the second signal arm. When the electronic card is inserted into the slot and contacts the first signal contact portion and the second signal contact portion, the first signal abutment portion abuts against the first signal arm, and the second signal abutment portion abuts against the second signal arm.

[0014] Furthermore, the first signal contact portion is used to communicate with the first contact pad of the electronic card, and the first signal contact portion includes a first coupling segment connected to the first signal arm, a first contact segment extending downward from the first coupling segment, and a second coupling segment connected to the lower end of the first contact segment. The second signal contact portion is used to communicate with the second contact pad of the electronic card, and the second signal contact portion includes a third coupling segment connected to the second signal arm, a second contact segment extending downward from the third coupling segment, and a fourth coupling segment connected to the lower end of the second contact segment. When the electronic card is inserted into the slot, the first contact segment contacts the first contact pad, the first coupling segment and the second coupling segment are located on the upper and lower sides of the first contact pad respectively and are coupled to the first contact pad, the second contact segment contacts the second contact pad, and the third coupling segment and the fourth coupling segment are located on the upper and lower sides of the first contact segment respectively and are coupled to the second contact pad.

[0015] Furthermore, the width of the first signal arm in the front-back direction is greater than the width of the first signal contact portion in the front-back direction and the width of the first signal abutment portion in the front-back direction, and the width of the second signal arm in the front-back direction is greater than the width of the second signal contact portion in the front-back direction and the width of the second signal abutment portion in the front-back direction.

[0016] Furthermore, the insulating base includes an insulating shell and an insulating block installed inside the insulating shell. The first signal terminal also includes a first signal embedding portion extending downward from the first signal arm. The first signal embedding portion is embedded and fixed in the insulating block. The first signal arm is exposed outside the insulating block. A first signal mounting portion extends from the first signal embedding portion in a direction away from the slot. The second signal terminal also includes a second signal embedding portion extending downward from the second signal arm. The second signal embedding portion is embedded and fixed in the insulating block. The second signal arm is exposed outside the insulating block. A second signal mounting portion extends from the second signal embedding portion in a direction closer to the slot.

[0017] Furthermore, the slot is provided with a second row of terminals on both the left and right sides. The second grounding terminal in the second row of terminals on the left side of the slot and the second signal terminal in the second row of terminals on the right side of the slot are arranged facing each other in the left-right direction to shield the second signal terminal in the left-right direction. The two rows of second signal mounting parts on the left and right sides of the slot extend towards each other in the left-right direction, and the distance between the two rows of second signal embedding parts on the left and right sides of the slot is greater than the distance between the two rows of second signal mounting parts. The second grounding arm extends downward to a second grounding embedding part. When viewed from left to right, the projections of the front and rear edges of the second signal embedding part in the second row of terminals on the left side of the slot are located between the front and rear edges of the second grounding embedding part in the second row of terminals on the right side of the slot. The first grounding arm extends downward to a first grounding embedding part. When viewed from left to right, the projections of the front and rear edges of the first signal embedding part are located between the front and rear edges of the second grounding embedding part.

[0018] Furthermore, the first grounding arm extends upward at an angle toward the slot, the first signal arm extends upward at an angle toward the slot, and the upper end of the insulating block extends upward at an angle with a tilting stop, the tilting stop abutting against the side of the first grounding arm and the first signal arm away from the slot.

[0019] Furthermore, the electrical connector also includes a first shield and a second shield. The first shield is located on the side of the first row of terminals away from the second row of terminals. The first shield includes a first shielding portion and a plurality of first connecting portions connected to the first shielding portion. The plurality of first connecting portions are connected and conductively connected to a plurality of first grounding terminals in the first row of terminals. At least two of the first connecting portions aligned vertically in the first shield are connected and conductively connected to the same first grounding terminal in the first row of terminals. The second shield is located between the second row of terminals and the first row of terminals. The second shield includes a second shielding portion and a plurality of second connecting portions connected to the second shielding portion. The plurality of second connecting portions are connected and conductively connected to a plurality of second grounding terminals in the second row of terminals. At least two of the second connecting portions aligned vertically in the second shield are connected and conductively connected to the same second grounding terminal in the second row of terminals.

[0020] Furthermore, the first grounding bend is provided with a first slot, the first slot does not extend to the first grounding contact and the first grounding shield, and the first grounding shield is located between the first slot and the second signal terminal in the vertical direction to shield the first slot. The second grounding bend is provided with a second slot, the second slot does not extend to the second grounding contact and the second grounding shield, and the second grounding shield shields the area below the second slot.

[0021] Compared with the prior art, the electrical connector designed in this utility model has the following advantages:

[0022] In this invention, when the electronic card is inserted into the slot and comes into contact with the first signal contact, the first ground contact, the second signal contact, and the second ground contact, the first ground shield abuts against the first ground arm to form a closed ring together with the first ground bend and the first ground contact to shield the second signal terminal in the vertical direction. This better prevents external signals from interfering with the second signal terminal in the vertical direction, improves the shielding effect of the first ground terminal on the second signal terminal, and allows the current flowing through the first ground terminal to be transmitted from the first ground contact through the first ground bend and the entire first ground arm, or directly through the first ground shield, to the lower end of the first ground arm. Finally, the current reaches the conductive position between the first grounding terminal and the circuit board, thus forming two transmission paths. This increases the ground return path, improves signal shielding, and enhances crosstalk prevention, thereby improving the high-frequency performance of the electrical connector. Furthermore, the first conductive path, where the current travels directly from the first grounding shield to the lower end of the first grounding arm and finally to the conductive position between the first grounding terminal and the circuit board, is shorter than the second conductive path, where the current flows upwards from the first grounding contact, through the first grounding bend and the entire first grounding arm, before reaching the conductive position between the first grounding terminal and the circuit board. This shortens the electrical length of the ground return path, optimizes resonance, and further improves signal strength. The integrity of transmission is improved, enhancing the high-frequency performance of the electrical connector. The second grounding shield abuts against the second grounding arm to form a closed ring together with the second grounding bend and the second grounding contact to shield the first signal terminal in the vertical direction. This better prevents external signals from interfering with the first signal terminal in the vertical direction, improving the shielding effect of the second grounding terminal on the first signal terminal. The second grounding shield abuts against the second grounding arm, allowing the signal from the second grounding terminal to be transmitted from the second grounding contact upwards through the second grounding bend or downwards through the second grounding shield to the lower end of the second grounding arm, ultimately reaching the conduction position between the second grounding terminal and the circuit board, thus forming two... The transmission path is improved by adding a ground return path, which enhances signal shielding and crosstalk prevention, thereby improving the high-frequency performance of the electrical connector. Furthermore, the signal from the second ground terminal is directly transmitted from the second ground shield to the lower end of the second ground arm and finally to the point where the second ground terminal is connected to the circuit board via the first conductive path. This is shorter than the second conductive path where the current flowing through the second ground terminal travels upward from the second ground contact, through the second ground bend, and the entire second ground arm before reaching the point where the second ground terminal is connected to the circuit board. This reduces the electrical length of the ground return path, optimizes resonance, and further improves signal transmission integrity and the high-frequency performance of the electrical connector. [Attached Image Description]

[0023] Figure 1 This is a schematic diagram of the overall structure of the electrical connector and circuit board of this utility model;

[0024] Figure 2 for Figure 1 Sectional view at point AA;

[0025] Figure 3 for Figure 1 Sectional view at point BB;

[0026] Figure 4 for Figure 1 A three-dimensional structural diagram of the first row of terminals, the second row of terminals, the first shielding plate, and the second shielding plate;

[0027] Figure 5 for Figure 4 A perspective view of the first row of terminals and the second row of terminals located on the same side of the slot along the left-right direction;

[0028] Figure 6 This is a three-dimensional structural diagram of the second row of terminals located on the left and right sides of the slot;

[0029] Figure 7 An exploded 3D view of the electrical connector, electronic card, and circuit board;

[0030] Figure 8 This is a schematic diagram showing the structure when the electrical connector is connected to the electronic card and the circuit board respectively;

[0031] Figure 9 This is a schematic diagram of the structure of the first row of terminals and the second row of terminals in other embodiments of this utility model.

[0032] Explanation of reference numerals in the accompanying drawings for the specific implementation methods:

[0033]

Detailed Implementation Methods

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the indicated position or component must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] As shown in Figure 1 to Figure 9 The diagram shows the electrical connector 1000 of this utility model. The vertical direction of the electrical connector 1000 is defined as the Z-axis, the upward direction as the positive Z-axis, the front-back direction as the X-axis, the forward direction as the positive X-axis, the left-right direction as the Y-axis, and the rightward direction as the positive Y-axis. For ease of description, the vertical, left-right, and front-back directions in this utility model are relative positions and do not constitute a limitation on implementation.

[0037] like Figures 1 to 2 As shown, an electrical connector 1000 for inserting an electronic card 6 includes: an insulating base 1, a first row of terminals 2, and a second row of terminals 3. The first row of terminals 2 and the second row of terminals 3 are disposed on the insulating base 1. A slot 11 is recessed downward on the upper surface of the insulating base 1 for inserting the electronic card 6. The first row of terminals 2 and the second row of terminals 3 are disposed on the same side of the slot 11 along the left-right direction. The insulating base 1 is used to fix and protect the first row of terminals 2 and the second row of terminals 3, which are used for electrical connection with the electronic card 6 to achieve signal transmission. In other embodiments, the electrical connector 1000 can also be used to insert a mating piece or a mating connector.

[0038] like Figure 1 , Figure 7As shown, the insulating base 1 is generally rectangular, with a slot 11 recessed downwards from the upper surface of the insulating base 1. The slot 11 is used for inserting the electronic card 6, and the slot 11 extends longitudinally in the front-to-back direction. The insulating base 1 includes an insulating shell 12 and an insulating block 13 installed inside the insulating shell 12. The lower surface of the insulating shell 12 has a cavity recessed upwards, and the upper surface of the insulating shell 12 has a through hole that communicates with the cavity in the vertical direction to form the slot 11. The insulating block 13 extends elongated in the front-to-back direction, is located in the cavity of the insulating shell 12, and is connected to the inner wall of the insulating shell 12 by a snap-fit ​​structure. The upper end of the insulating block 13 is provided with an upwardly extending inclined stop 131. The inclined stop 131 is located on the side of the first row of terminals 2 away from the slot 11. The upper end of the inclined stop 131 extends inclinedly towards the slot 11 in the left-right direction, and the side of the inclined stop 131 near the first row of terminals 2 abuts against the first row of terminals 2, preventing the first row of terminals 2 from shifting in the left-right direction. In this embodiment, the insulating base 1 is assembled from the insulating shell 12 and the insulating block 13. Specifically, the insulating block 13 is integrally injection molded with the first row of terminals 2 and the second row of terminals 3. The insulating shell 12 and the insulating block 13 are connected by a snap-fit ​​structure, which facilitates the assembly of the first row of terminals 2 and the second row of terminals 3 into the insulating shell 12. In other embodiments, the insulating base 1 is manufactured by integral injection molding. Specifically, a first injection molding can be performed to wrap the first row of terminals 2 in a plastic, and then a second injection molding can be performed to wrap the second row of terminals 3 and the plastic wrapping the first row of terminals 2 in another plastic.

[0039] like Figure 3 and Figure 4As shown, the first row of terminals 2 includes first ground terminals 21 and first signal terminals 22 arranged alternately in the front-to-back direction. Multiple first ground terminals 21 and multiple first signal terminals 22 are arranged facing each other in the front-to-back direction, so that the first ground terminals 21 can shield the first signal terminals 22 in the front-to-back direction, preventing signal crosstalk in the front-to-back direction. In this embodiment, the first row of terminals 2 is provided on both the left and right sides of the slot 11. The first ground terminal 21 in the first row of terminals 2 on the left side of the slot 11 and the first signal terminal 22 in the first row of terminals 2 on the right side of the slot 11 are arranged facing each other in the left-to-right direction. The first ground terminal 21 in the first row of terminals 2 on the right side of the slot 11 is also arranged facing the first signal terminal 22 in the first row of terminals 2 on the left side of the slot 11 in the left-to-right direction, so that the first ground terminal 21 shields the first signal terminal 22 in the left-to-right direction. When the electronic card 6 is inserted into the slot 11, the first ground terminal 21 on the left side of the slot 11 and the first signal terminal 22 on the right side of the slot 11 together clamp the electronic card 6 in the left-to-right direction. In this embodiment, the first row of terminals 2 located on the left side of the slot 11 and the first row of terminals 2 located on the right side of the slot 11 can be embedded in different insulating blocks 13, and then the two insulating blocks 13 are assembled together by a snap-fit ​​structure, so that the first row of terminals 2 on the left and right sides of the slot 11 are assembled into a whole. In other embodiments, the first row of terminals 2 located on the left side of the slot 11 and the first row of terminals 2 located on the right side of the slot 11 can also be embedded in the same insulating block 13 by integral injection molding.

[0040] like Figure 2 , Figure 3 , Figure 5 As shown, the first grounding terminal 21 has a first grounding arm 213 extending in the vertical direction and inclined at its upper end toward the slot 11, a first grounding bent portion 216 extending from the end of the first grounding arm 213 close to the slot 11 in the horizontal direction toward the slot 11, a first grounding contact portion 214 connected to the end of the first grounding bent portion 216 away from the first grounding arm 213 and extending into the slot 11, a first grounding shield portion 215 extending from the lower end of the first grounding contact portion 214 toward the first grounding arm 213, a first grounding embedded portion 212 extending downward from the end of the first grounding arm 213 away from the slot 11 in the horizontal direction and embedded in the insulating block 13, and a first grounding mounting portion 211 extending from the lower end of the first grounding embedded portion 212 extending away from the slot 11 in the horizontal direction.

[0041] like Figures 2 to 5As shown, the lower end of the first grounding arm 213 is connected to the upper end of the first grounding embedded part 212. The first grounding arm 213 extends upward and inclined toward the slot 11. The first grounding arm 213 is exposed outside the insulating block 13 and is located in the cavity of the insulating shell 12. When the electronic card 6 is inserted into the slot 11 and contacts the first grounding contact part 214, the side of the first grounding arm 213 near the slot 11 abuts against the first grounding shield part 215, and the side of the first grounding arm 213 away from the slot 11 abuts against the inclined stop block 131 on the insulating block 13. This causes the first grounding arm 213 to be simultaneously subjected to two opposing holding forces from the electronic card 6 and the inclined stop block 131, preventing the first grounding arm 213 from shifting away from the electronic card 6 as a whole, and ensuring that the first grounding shield part 215 stably abuts against the first grounding arm 213. The first grounding bend 216 is formed by bending downwards from the upper end of the first grounding arm 213 and toward the slot 11, making the first grounding terminal 21 elastic in the left-right direction. When the electronic card 6 is inserted into the slot 11, the elasticity of the first grounding bend 216 makes it easy for the electronic card 6 to be inserted, allowing the first grounding contact 214 to contact the electronic card 6 and achieve electrical connection. In this embodiment, the width of the first grounding bend 216 in the front-back direction is smaller than the width of the first grounding arm 213 in the front-back direction, thereby reducing the holding force of the first grounding arm 213 and reducing the insertion and removal force of the electronic card 6.

[0042] like Figure 9 As shown, in other embodiments, the first grounding bend 216 is provided with a first slot 217 extending through it in the vertical direction, increasing the elasticity of the first grounding bend 216, thereby increasing the elasticity of the first grounding terminal 21 and reducing the insertion and extraction force of the electronic card 6. The first slot 217 is located in the middle of the first grounding bend 216, making it easy to bend and shape both sides of the first grounding bend 216. The first slot 217 does not extend to the first grounding contact portion 214 and the first grounding shield portion 215, avoiding a reduction in the area of ​​the first grounding contact portion 214 and the first grounding shield portion 215 due to the setting of the first slot 217. The first slot 217 corresponds to the first grounding shield portion 215 in the vertical direction. The first grounding shield portion 215 is located between the first slot 217 and the second signal terminal 32 in the vertical direction to shield the first slot 217, thereby shielding the noise signal passing through the first slot 217 in the vertical direction through the first grounding shield portion 215, and preventing the noise signal from affecting the second signal terminal 32. Preferably, when viewed from the bottom up, the projection of the first grounding shield 215 completely obscures the first slot 217.

[0043] like Figure 2 , Figure 3 , Figure 5 , Figure 8As shown, the upper end of the first grounding contact portion 214 is connected to the first grounding bend portion 216, and the lower end of the first grounding contact portion 214 is connected to the first grounding shield portion 215. The first grounding contact portion 214 protrudes towards the slot 11 along the middle of its vertical direction to contact the contact pad on the electronic card 6. It can be understood that the electronic card 6 is provided with multiple contact pads, and each first grounding contact portion 214 of the first grounding terminal 21 corresponds to one contact pad. The first grounding shield portion 215 is formed by bending and extending from the lower end of the first grounding contact portion 214 along the left-right direction towards the first grounding arm 213. In the vertical direction, the first grounding shield portion 215 shields the corresponding second signal terminal 32, increasing the shielding effect of the first grounding terminal 21 on the second signal terminal 32 in the vertical direction. When the electronic card 6 is inserted into the slot 11, the first grounding shield 215 abuts against the first grounding arm 213, making one end of the first grounding shield 215 directly electrically connected to the first grounding arm 213. The first grounding shield 215 and the first grounding arm 213 abut against each other, together with the first grounding bend 216 and the first grounding contact 214, form a closed ring to shield the second signal terminal 32 in the vertical direction, increasing the shielding effect of the first grounding terminal 21 on the second signal terminal 32 in the vertical direction. Furthermore, the closed ring formed by the first grounding shield 215 and the first grounding arm 213 abutting against each other, together with the first grounding bend 216 and the first grounding contact 214, can completely shield the second signal terminal 32 in the vertical direction, providing a better shielding effect. Understandably, when the electronic card 6 is inserted into the slot 11 and comes into contact with the first grounding contact 214, the first grounding shield 215 abuts against the lower end of the first grounding arm 213, so that the first grounding arm 213, the first grounding bend 216, the first grounding contact 214, and the first grounding shield 215 together form a closed ring, thereby forming two transmission paths from the first grounding contact 214: one path goes upward from the first grounding contact 214 through the first grounding bend 216 and the entire first grounding arm 213 to the lower end of the first grounding arm 213, and the other path goes downward from the first grounding contact 214 through the first grounding shield 215 to the lower end of the first grounding arm 213, increasing the grounding return path, improving the signal shielding effect, and improving the anti-crosstalk effect. Specifically, the end of the first grounding shield 215 near the first grounding arm 213 is inclined downward and bent downward to form an arc surface. The arc surface of the first grounding shield 215 contacts the first grounding arm 213 to prevent the first grounding shield 215 from scratching the first grounding arm 213.

[0044] like Figure 2 , Figure 3 , Figure 5 , Figure 8As shown, the first grounding embedded part 212 extends in a long strip shape along the vertical direction. The first grounding embedded part 212 is embedded and fixed in the insulating block 13, so that the first grounding terminal 21 is fixed in the insulating block 13. Specifically, the first grounding embedded part 212 can be encapsulated in the insulating block 13 by injection molding, and then the insulating block 13 is assembled with the insulating shell 12 in the insulating base 1. The end of the first grounding mounting part 211 near the slot 11 in the left-right direction is connected to the first grounding embedded part 212. The first grounding mounting part 211 is used as a whole for soldering connection with the circuit board 7, so that the electrical connector 1000 is electrically connected to the circuit board 7. Specifically, the circuit board 7 is provided with a first mounting area and a second mounting area at fixed intervals along the left-right direction, and each first grounding mounting part 211 corresponds to a first mounting area. Since the first mounting area and the second mounting area on the circuit board 7 are generally set at a fixed distance along the left and right direction, that is, the distance from the first mounting area to the slot 11 is fixed, when the first ground mounting part 211 is installed in the first mounting area, the first ground buried part 212 is located on the side of the first mounting area closer to the slot 11 along the left and right direction. Compared with the first ground buried part 212 that bends upward from the end of the first ground mounting part 211 away from the slot 11, the first ground buried part 212 in this solution is closer to the slot 11 along the left and right direction. Therefore, when two kinds of first ground terminals 21 with the same shape and the same length along the up and down direction are set, the first ground terminal 21 in this solution will also be closer to the slot 11 along the left and right direction, so that the length of the first ground terminal 21 along the left and right direction will be shortened, thereby shortening the overall length of the first ground terminal 21, thereby shortening the return path of the first ground terminal 21, optimizing resonance, improving the integrity of signal transmission, and improving high-frequency performance. Furthermore, when the first grounding mounting part 212 is located on the side of the first mounting area near the slot 11 in the left-right direction, the first mounting area has a longer area connected to the first grounding mounting part 211 in the left-right direction, thereby improving the stability of the connection between the first grounding mounting part 211 and the first mounting area.

[0045] like Figure 2 , Figure 3 , Figure 5 , Figure 8As shown, the first signal terminal 22 includes a first signal arm 223 extending in the vertical direction and inclined at its upper end toward the slot 11, a first signal bending portion 226 extending from the upper end of the first signal arm 223 toward the slot 11, a first signal contact portion 224 connected to the end of the first signal bending portion 226 in the left-right direction near the slot 11 and extending into the slot 11, a first signal abutment portion 225 extending from the lower end of the first signal contact portion 224 toward the first signal arm 223, a first signal embedding portion 222 extending downward from the end of the first signal arm 223 away from the slot 11 in the left-right direction and embedded in the insulating block 13, and a first signal mounting portion 221 extending from the lower end of the first signal embedding portion 222 in the left-right direction away from the slot 11. Along the front-back direction, the first signal arm 223 is aligned with the first ground arm 213, the first signal bend 226 is aligned with the first ground bend 216, the first signal contact 224 is aligned with the first ground contact 214, the first signal abutment 225 is aligned with the first ground shield 215, the first signal embedding part 222 is aligned with the first ground embedding part 212, and the first signal mounting part 221 is aligned with the first ground mounting part 211, so that the first signal terminal 22 is shielded by the first ground terminal 21 along the front-back direction.

[0046] like Figure 2 , Figure 3 , Figure 5 , Figure 8 As shown, the lower end of the first signal arm 223 is connected to the upper end of the first signal embedding part 222. The first signal arm 223 extends upward and obliquely toward the slot 11, protruding from the insulating block 13 and located within the cavity of the insulating shell 12. When the electronic card 6 is inserted into the slot 11 and contacts the first signal contact part 224, the side of the first signal arm 223 near the slot 11 abuts against the first signal abutment part 225, and the side of the first signal arm 223 away from the slot 11 abuts against the inclined stop 131 of the insulating block 13, thereby preventing the first signal arm 223 from shifting away from the electronic card 6 as a whole, and ensuring that the first signal abutment part 225 stably abuts against the first signal arm 223. The first signal bending part 226 is formed by bending downward and toward the slot 11 from the upper end of the first signal arm 223, making the first signal terminal 22 elastic in the left-right direction, facilitating the insertion of the electronic card 6 into the slot 11 and contact with the first signal terminal 22.

[0047] like Figure 2 , Figure 3 , Figure 4 , Figure 8As shown, the upper end of the first signal contact portion 224 is connected to the first signal bending portion 226, and the lower end of the first signal contact portion 224 is connected to the first signal abutment portion 225. The first signal contact portion 224 is used to conduct with the first contact pad 61 of the electronic card 6, so that the first signal terminal 22 is electrically connected to the electronic card 6. It can be understood that the electronic card 6 is provided with multiple first contact pads 61, and the first signal contact portion 224 of each first signal terminal 22 corresponds to one contact pad. The first signal contact portion 224 includes a first coupling section 2242 connecting the first signal arm 223, a first contact section 2241 extending downward from the first coupling section 2242, and a second coupling section 2243 connected to the first contact section 2241. The first coupling segment 2242 extends downward and inclined toward the slot 11 from the end of the first signal arm 223 near the slot 11. The first contact segment 2241 is formed by bending the first coupling segment 2242 downward from the end near the slot 11. The second coupling segment 2243 extends downward and away from the slot 11 from the first contact segment 2241. When the electronic card 6 is inserted into the slot 11, the first contact segment 2241 contacts the electronic card 6, and the first coupling segment 2242 and the second coupling segment 2243 are used to couple with the first contact pad 61 of the electronic card 6, thereby reducing the length of the residual posts extending upward and downward from the third contact segment on the first contact pad 61, thereby optimizing signal integrity and optimizing the high-frequency performance of the electrical connector 1000. It is understandable that when the first contact segment 2241 contacts the first contact pad 61, the first coupling segment 2242 is aligned with the first contact pad 61 in the left-right direction and is close to the first contact pad 61 in the left-right direction, so that the gap between the first coupling segment 2242 and the first contact pad 61 is small, and capacitive coupling can be achieved through a small gap, thereby forming an electrical coupling between the first coupling segment 2242 and the first contact pad 61; the second coupling segment 2243 is aligned with the first contact pad 61 in the left-right direction and is close to the first contact pad 61 in the left-right direction, so that the gap between the second coupling segment 2243 and the first contact pad 61 is small, and capacitive coupling can be achieved through a small gap, thereby forming an electrical coupling between the second coupling segment 2243 and the first contact pad 61. Preferably, the length of the first contact pad 61 coupled with the first coupling segment 2242 and the second coupling segment 2243 in the vertical direction can be better controlled by controlling the angle formed between them, thereby controlling the length of the residual pile. The width of the first signal contact portion 224 in the front-back direction is smaller than the width of the first signal arm 223 in the front-back direction, so as to reduce the impedance difference between the first signal contact portion 224 and the first signal arm 223, and make the impedance of the first signal contact portion 224 and the first signal arm 223 matched.The first signal contact portion 225 is used to contact the first signal arm 223. Viewed in the front-to-back direction, the first signal contact portion 225 has the same shape as the first grounding shield portion 215, so that the first signal contact portion 225 is shielded by the first grounding shield portion 215 in the front-to-back direction, avoiding crosstalk between the first signal terminals 22. When the electronic card 6 is inserted into the slot 11 and contacts the first signal contact portion 224, the first signal contact portion 225 contacts the first signal arm 223, causing the first signal arm 223, the first signal bend portion 226, the first signal contact portion 224, and the first signal contact portion 225 to form a closed loop, thus forming two transmission paths: one path from the first signal contact portion 224 upwards through the first signal bend portion 226 and the entire first signal arm 223 to the lower end of the first signal arm 223; the other path from the first signal contact portion 224 downwards through the first signal contact portion 225 to the lower end of the first signal arm 223, accelerating signal transmission efficiency. Preferably, the width of the first signal contact portion 225 in the front-to-back direction is smaller than the width of the first signal arm 223 in the front-to-back direction, so that the impedance of the first signal contact portion 225 and the first signal arm 223 is better matched. Viewed vertically, the front and rear edges of the first signal contact portion 225 are located between the front and rear edges of the second grounding shield portion 315.

[0048] like Figure 2 , Figure 3 , Figure 5 , Figure 8As shown, the first signal embedding portion 222 extends in a long strip shape in the vertical direction. Viewed in the front-to-back direction, the first signal embedding portion 222 has the same shape as the first grounding embedding portion 212, and both are embedded in the same insulating block 13 of the insulating base 1, thus fixing the first signal terminal 22 in the insulating block 13. Specifically, the first signal embedding portion 222 and the first grounding embedding portion 212 can be simultaneously encapsulated in the insulating block 13 by injection molding. The first signal mounting portion 221 is exposed outside the insulating block 13 and extends from the lower end of the first signal embedding portion 222 in a left-to-right direction away from the slot 11. The first signal mounting portion 221 is used to connect with the first mounting area, so that the electrical connector 1000 is electrically connected to the circuit board 7. Each first signal mounting portion 221 corresponds to one first mounting area. Since the first mounting area and the second mounting area on the circuit board 7 are generally set at a fixed distance along the left and right direction, that is, the distance from the first mounting area to the slot 11 is fixed, when the first signal mounting part 221 is installed in the first mounting area, the first signal embedded part 222 is located on the side of the first ground mounting part 211 close to the slot 11 along the left and right direction. Compared with the first signal embedded part 222 that bends upward from the end of the first signal mounting part 221 away from the slot 11, the first signal embedded part 222 in this solution is closer to the slot 11 along the left and right direction. Therefore, when two kinds of first signal terminals 22 with the same shape and the same length along the up and down direction are provided, the first signal terminal 22 in this solution will also be closer to the slot 11 along the left and right direction, so that the length of the first signal terminal 22 along the left and right direction will be shortened, and the overall length of the first signal terminal 22 will also be shortened, thereby shortening the signal transmission path of the first signal terminal 22, thereby reducing signal crosstalk and improving the high-frequency performance of the electrical connector 1000. Furthermore, when the first signal mounting part 222 is located on the side of the first grounding mounting part 211 near the slot 11 in the left-right direction, the first mounting area has a longer area connected to the first signal mounting part 221 in the left-right direction, thereby improving the stability of the connection between the first signal mounting part 221 and the first mounting area.

[0049] like Figure 2 , Figure 3 , Figure 4 , Figure 6As shown, the second row of terminals 3 is located below the first grounding shield 215 and the first signal contact 224. The second row of terminals 3 includes second signal terminals 32 corresponding to the first grounding terminal 21 and second grounding terminals 31 corresponding to the first signal terminal 22. Along the front-back direction, multiple second grounding terminals 31 are arranged one-to-one with multiple second signal terminals 32, so that the second grounding terminals 31 can shield the second signal terminals 32 along the front-back direction, preventing crosstalk between multiple second signal terminals 32 along the front-back direction. The slot 11 is provided with a second row of terminals 3 on both the left and right sides. The second ground terminal 31 in the second row of terminals 3 on the left side of the slot 11 and the second signal terminal 32 in the second row of terminals 3 on the right side of the slot 11 are arranged facing each other in the left and right direction to shield the second signal terminal 32 in the left and right direction. The second ground terminal 31 in the second row of terminals 3 on the right side of the slot 11 and the second signal terminal 32 in the second row of terminals 3 on the left side of the slot 11 are arranged facing each other in the left and right direction to shield the second signal terminal 32 in the left and right direction, so that the second ground terminal 31 shields the second signal terminal 32 in the left and right direction. When the first row of terminals 2 and the second row of terminals 3 are respectively provided on the left and right sides of the slot 11, the column of terminals in the electrical connector 1000 along the left and right direction can be arranged in the order of first ground terminal 21, second signal terminal 32, second ground terminal 31, and first signal terminal 22 from left to right, or in the order of first signal terminal 22, second ground terminal 31, second signal terminal 32, and first ground terminal 21 from left to right. This makes the first signal terminal 22 and the second signal terminal 32 shielded by the first ground terminal 21 or the second ground terminal 31 along the left and right direction, reducing crosstalk between the first signal terminal 22 and the second signal terminal 32 along the left and right direction, and reducing interference from external signals in the left and right direction, thereby improving the high-frequency performance of the electrical connector 1000.

[0050] like Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 8As shown, the second grounding terminal 31 is located below the first signal contact portion 225. The second grounding terminal 31 has a second grounding arm 313 extending in the vertical direction and inclined at its upper end toward the slot 11, a second grounding bent portion 316 extending from the end of the second grounding arm 313 near the slot 11 toward the slot 11, a second grounding contact portion 314 connected to the end of the second grounding bent portion 316 away from the second grounding arm 313 and extending into the slot 11, a second grounding shield portion 315 extending from the lower end of the second grounding contact portion 314 toward the second grounding arm 313, a second grounding embedded portion 312 extending downward from the end of the second grounding arm 313 away from the slot 11 in the horizontal direction and fixed in the insulating base 1, and a second grounding mounting portion 311 extending from the lower end of the first grounding embedded portion 212 in the horizontal direction away from the slot 11.

[0051] The lower end of the second grounding arm 313 is connected to the second grounding embedded part 312. The second grounding arm 313 is exposed outside the insulating block 13 and located inside the cavity of the insulating shell 12. The upper section of the second grounding arm 313 extends vertically and is inclined upward toward the slot 11, while the lower section extends vertically and is vertically arranged. The second grounding bend 316 is formed by bending downward from the upper end of the second grounding arm 313 toward the slot 11, giving the second grounding terminal 31 elasticity in the left-right direction. When the electronic card 6 is inserted into the slot 11, the elasticity of the second grounding bend 316 makes it easy for the electronic card 6 to be inserted, allowing the second grounding contact part 314 to contact the electronic card 6 and achieve electrical connection. In this embodiment, the width of the second grounding bend 316 in the front-back direction is smaller than the width of the second grounding arm 313 in the front-back direction, thereby reducing the holding force of the first grounding arm 213 and reducing the insertion and extraction force of the electronic card 6.

[0052] like Figure 9As shown, in other embodiments, the second grounding bend 316 is provided with a second slot 317 extending through it in the vertical direction, thereby increasing the elasticity of the second grounding bend 316 and the second grounding terminal 31, reducing the insertion and extraction force of the electronic card 6. The second slot 317 is located in the middle of the second grounding bend 316, making it easy to bend and shape both sides of the second grounding bend 316. The second slot 317 does not extend to the second grounding contact portion 314 and the second grounding shield portion 315, avoiding a reduction in the area of ​​the second grounding contact portion 314 and the second grounding shield portion 315 due to the setting of the second slot 317. The second slot 317 corresponds to the second grounding shield portion 315 in the vertical direction, so that the second grounding shield portion 315 shields the lower part of the second slot 317, thereby preventing noise or crosstalk signals from passing through the second slot 317 and affecting the first signal terminal 22, and thus better preventing external noise signals from interfering with the second signal terminal 32 in the vertical direction. Preferably, when viewed from the bottom up, the projection of the second grounding shield completely obscures the second slot 317.

[0053] like Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 8As shown, the upper end of the second grounding contact portion 314 is connected to the second grounding bending portion 316, and the lower end of the second grounding contact portion 314 is connected to the second grounding shield portion 315. The second grounding contact portion 314 protrudes towards the slot 11 along the middle of its vertical direction to contact the contact pad on the electronic card 6. Specifically, each second grounding contact portion 314 corresponds to one contact pad. The second grounding shield portion 315 extends from the lower end of the second grounding contact portion 314 towards the second grounding arm 313 by bending, and the second grounding shield portion 315 bends towards one end of the second grounding arm 313, so that when the electronic card 6 is inserted into the slot 11, the second grounding shield portion 315 abuts against the second grounding arm 313 through the arc surface formed by bending, avoiding the second grounding shield portion 315 scratching the second grounding arm 313. When the electronic card 6 is inserted into the slot 11, the second grounding shield 315 abuts against the second grounding arm 313, making one end of the second grounding shield 315 directly electrically connected to the second grounding arm 313. The second grounding shield 315 and the second grounding arm 313 abut against each other, together with the second grounding bend 316 and the second grounding contact 314, form a closed ring to shield the first signal terminal 22 in the vertical direction, increasing the shielding effect of the second grounding terminal 31 on the first signal terminal 22 in the vertical direction. Furthermore, the closed ring formed by the second grounding shield 315 and the second grounding arm 313 abutting against each other, together with the second grounding bend 316 and the second grounding contact 314, can shield most of the first signal terminal 22 in the vertical direction, providing a better shielding effect. When the electronic card 6 is inserted into the slot 11 and contacts the second grounding contact 314, the second grounding shield 315 abuts against the lower end of the second grounding arm 313, so that the second grounding arm 313, the second grounding shield 315, and the second grounding contact 314 together form a closed ring, thereby forming two transmission paths from the second grounding contact 314: one path passes upward from the second grounding contact 314 through the second grounding bend 316 and the entire second grounding arm 313 to the lower end of the second grounding arm 313, and the other path passes downward from the second grounding contact 314 through the second grounding shield 315 to the lower end of the second grounding arm 313. This increases the grounding return path, improves the signal shielding effect, and improves the anti-crosstalk effect.

[0054] like Figures 2 to 8As shown, the second grounding embedment 312 extends in a long strip along the vertical direction. The second grounding embedment 312 is embedded in the insulating block 13, and along the left-right direction, it is closer to the slot 11 than the first grounding embedment 212 and the first signal embedment 222. Specifically, the second grounding embedment 312 can be embedded in the insulating block 13 of the insulating base 1 by injection molding. Looking along the left-right direction, the front and rear edges of the first signal embedment 222 are located between the front and rear edges of the second grounding embedment 312, providing better shielding for the first signal terminal 22 along the left-right direction, thereby preventing signal crosstalk along the left-right direction and preventing external signals in the left-right direction from interfering with the first signal terminal 22. The second grounding mounting portion 311 is exposed outside the insulating block 13 and is formed by bending and extending from the lower end of the second grounding embedment 312 along the left-right direction towards the slot 11. The second grounding mounting part 311 is used to connect to the second mounting area of ​​the circuit board 7, and each second grounding mounting part 311 corresponds to one second mounting area. Since the first mounting area and the second mounting area on the circuit board 7 are generally set at a fixed distance along the left and right direction, that is, the distance from the second mounting area to the slot 11 is fixed, when the second ground mounting part 311 is installed in the second mounting area, the second ground buried part 312 is located on the side of the second mounting area away from the slot 11 along the left and right direction. Compared with the second ground buried part 312 that bends upward from the end of the second ground mounting part 311 near the slot 11, the second ground buried part 312 in this embodiment is further away from the slot 11. Therefore, when two types of second ground terminals 31 with the same shape and the same length along the up and down direction are provided, the second ground terminal 31 in this solution will also be further away from the slot 11 along the left and right direction, so that the lever arm length of the second ground arm 313 will be increased, thereby improving the elasticity of the second ground arm 313, reducing the insertion force of the electronic card 6, and the overall distance of the second ground terminal 31 to the slot 11 along the left and right direction will also increase, thereby shielding more of the first signal terminal 22 in the up and down direction, and thus increasing the shielding effect of the second ground terminal 31 on the first signal terminal 22. When the second grounding mounting part 312 is located on the side of the second mounting area away from the slot 11 in the left-right direction, the second mounting area has a longer area connected to the second grounding mounting part 311 in the left-right direction, which improves the stability of the connection between the second grounding mounting part 311 and the second mounting area.

[0055] like Figures 2 to 8As shown, the second signal terminal 32 is located below the first grounding shield 215 and is shielded by the first grounding shield 215 in the vertical direction. The second signal terminal 32 includes a second signal arm 323 extending in the vertical direction and inclined towards the slot 11 at its upper end; a second signal bending portion 326 extending from the upper end of the second signal arm 323 toward the slot 11; a second signal contact portion 324 connected to the end of the second signal bending portion 326 in the left-right direction near the slot 11 and extending into the slot 11; a second signal abutment portion 325 extending from the lower end of the second signal contact portion 324 toward the second signal arm 323 in the vertical direction; a second signal embedding portion 322 extending from the end of the second signal arm 323 away from the slot 11 in the left-right direction and embedded in the insulating block 13; and a second signal mounting portion 321 extending from the lower end of the second signal embedding portion 322 in the left-right direction toward the slot 11 in the horizontal direction. Along the front-back direction, the second signal arm 323 is aligned with the second grounding arm 313, the second signal contact portion 324 is aligned with the second grounding contact portion 314, the second signal bending portion 326 is aligned with the second signal abutment portion 325, the second signal abutment portion 325 is aligned with the second grounding shield portion 315, the second signal embedding portion 322 is aligned with the second grounding embedding portion 312, and the second signal mounting portion 321 is aligned with the second grounding mounting portion 311, so that the second signal terminal 32 is shielded by the second grounding terminal 31 along the front-back direction.

[0056] like Figures 2 to 8As shown, viewed from the front-to-back direction, the second signal arm 323 has the same shape as the second grounding arm 313. The lower end of the second signal arm 323 is connected to the second signal embedding part 322. The second signal arm 323 is exposed outside the insulating block 13 and located inside the cavity of the insulating shell 12. The upper section of the second signal arm 323 extends vertically and is inclined towards the slot 11, while the lower section extends vertically and is vertically positioned. The second signal bending part 326 bends downward from the upper end of the second signal arm 323 and towards the slot 11, giving the second signal terminal 32 elasticity in the left-to-right direction. When the electronic card 6 is inserted into the slot 11, the elasticity of the second signal bending part 326 makes it easy for the electronic card 6 to be inserted, allowing the second signal contact part 324 to contact the electronic card 6 and achieve electrical connection. The second signal contact portion 324 is used to communicate with the second contact pad 62 of the electronic card 6. The second signal contact portion 324 includes a third coupling section 3242 connected to the second signal arm 323, a second contact section 3241 extending downward from the third coupling section 3242, and a fourth coupling section 3243 connected to the lower end of the second contact section 3241. The third coupling section 3242 is formed by extending downward and inclined towards the slot 11 from the end of the second signal arm 323 near the slot 11. The second contact section 3241 is formed by bending the section of the third coupling section 3242 near the slot 11 downward. The fourth coupling section 3243 is formed by extending downward and away from the slot 11 from the second contact section 3241. When the electronic card 6 is inserted into the slot 11, the second contact segment 3241 contacts the electronic card 6, and the third coupling segment 3242 and the fourth coupling segment 3243 are used to couple with the second contact pad 62 of the electronic card 6, thereby reducing the length of the residual post extending upward and downward from the second contact segment 3241 on the second contact pad 62, thereby optimizing signal integrity and improving the high-frequency performance of the electrical connector 1000. Understandably, when the second contact segment 3241 contacts the second contact pad 62, the third coupling segment 3242 is aligned with the second contact pad 62 in the left-right direction and is close to the second contact pad 62 in the left-right direction, so that the gap between the third coupling segment 3242 and the second contact pad 62 is small, and capacitive coupling can be achieved through a small gap, thereby forming an electrical coupling between the third coupling segment 3242 and the second contact pad 62; the fourth coupling segment 3243 is also aligned with the first contact pad 61 in the left-right direction and is close to the first contact pad 61 in the left-right direction, so that the gap between the fourth coupling segment 3243 and the second contact pad 62 is small, and capacitive coupling can be achieved through a small gap, thereby forming an electrical coupling between the fourth coupling segment 3243 and the second contact pad 62. Preferably, the length of the second contact pad 62 coupled in the vertical direction of the third coupling segment 3242 and the fourth coupling segment 3243 can be better controlled by controlling the angle formed between the third coupling segment 3242, the fourth coupling segment 3243 and the electronic card 6, thereby controlling the length of the residual pile.The width of the second signal contact 324 in the front-back direction is smaller than the width of the second signal arm 323 in the front-back direction, so as to reduce the impedance difference between the second signal contact 324 and the second signal arm 323, and make the impedance of the second signal contact 324 and the second signal arm 323 more matched.

[0057] like Figures 2 to 8 As shown, the second signal abutment portion 325 is used to abut against the second signal arm 323. Viewed in the front-to-back direction, the second signal abutment portion 325 has the same shape as the second grounding shield portion 315. When the electronic card 6 is inserted into the slot 11 and contacts the second signal contact portion 324, the second signal abutment portion 325 abuts against the second signal arm 323, causing the second signal arm 323, the second signal contact portion 324, and the second signal abutment portion 325 to form a closed ring, thus creating two transmission paths: one path from the second signal contact portion 324 upwards through the second signal bend portion 326 and the entire second signal arm 323 to the lower end of the second signal arm 323; the other path from the second signal contact portion 324 downwards through the second signal abutment portion 325 to the lower end of the second signal arm 323, thereby accelerating signal transmission efficiency. Preferably, the width of the second signal abutment portion 325 in the front-to-back direction is smaller than the width of the second signal arm 323 in the front-to-back direction, ensuring impedance matching between the second signal abutment portion 325 and the second signal arm 323.

[0058] like Figures 2 to 8As shown, viewed from the front-to-back direction, the second signal embedding part 322 and the second grounding embedding part 312 have the same shape, and both are embedded in the same insulating block 13 of the insulating base 1, thus fixing the second signal terminal 32 in the insulating base 1. Specifically, the second signal embedding part 322 and the second grounding embedding part 312 can be simultaneously embedded in the same insulating block 13 by injection molding. Viewed from the left-to-right direction, the front and rear edges of the second signal embedding part 322 are located between the front and rear edges of the first grounding embedding part 212, resulting in better shielding of the second signal terminal 32 by the first grounding terminal 21 in the left-to-right direction. The second signal mounting portion 321 is exposed outside the insulating block 13 and extends from the lower end of the second signal embedding portion 322 in a left-right direction toward the slot 11. The second signal mounting portion 321 is used to connect with the second mounting area, so that the electrical connector 1000 is electrically connected to the circuit board 7. Each second signal mounting portion 321 corresponds to one second mounting area. When the first signal terminal 22 and the second signal terminal 32 are soldered to the circuit board 7, the second signal mounting portion 321 and the first signal mounting portion 221 are separated from each other in a left-right direction, which can prevent the second signal mounting portion 321 and the first signal mounting portion 221 from bridging. Specifically, the second signal mounting portions 321 of the second row of terminals 3 located on both sides of the slot 11 extend towards each other in the left and right directions, and the distance between the two rows of second signal mounting portions 322 located on the left and right sides of the slot 11 is greater than the distance between the two rows of second signal mounting portions 321, thereby reducing crosstalk between the second signal terminals 32 located on the left and right sides of the slot 11. The second grounding portion 312 in one row of second-row terminals 3 located on the left and right sides of the slot corresponds to the second signal mounting portion 322 in the other row of second-row terminals 3 in the left and right directions. Moreover, when viewed in the left and right direction, the projections of the front and rear edges of the second signal mounting portion 322 are located between the front and rear edges of the second grounding portion 312, so that the second grounding terminals 31 located on the left and right sides of the slot 11 have a better signal shielding effect on the second signal terminals 32.

[0059] like Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, the electrical connector 1000 also includes a first shielding plate 4 and a second shielding plate 5. The first shielding plate 4 is located on the side of the first row of terminals 2 away from the second row of terminals 3, and the first shielding plate 4 is connected to a plurality of first grounding terminals 21. There are two first shielding plates 4, and the two first shielding plates 4 are respectively located on the sides of the first row of terminals 2 on the left and right sides of the slot 11 away from each other, and the two first shielding plates 4 are respectively connected to the first grounding terminals 21 in the first row of terminals 2 on the left and right sides of the slot 11. The first shielding plate 4 includes a first shielding part 41 and a plurality of first connecting parts 42 connected to the first shielding part 41. The plurality of first connecting parts 42 are connected and conductive to the plurality of first grounding terminals 21 in the first row of terminals 2, suppressing resonance between the plurality of first grounding terminals 21 and improving high-frequency transmission performance. The plurality of first connecting parts 42 are arranged in three columns along the vertical direction, the three columns of first connecting parts 42 are aligned along the vertical direction, and each column of first connecting parts 42 is evenly distributed along the front and back direction. Multiple first connecting portions 42 aligned vertically in the first shielding sheet 4 are connected to the same first grounding terminal 21 for conduction. Using multiple first connecting portions 21 connected to each first grounding terminal 21 better suppresses signal resonance in the first row of terminals 2 and optimizes the high-frequency transmission performance of the electrical connector 1000. In this embodiment, the first shielding sheet 4 has three first connecting portions 42 aligned vertically for each first grounding terminal 21. These three first connecting portions 42 are evenly distributed vertically and connected to the first grounding arm 213 and the first grounding embedded portion 212 of the first grounding terminal 21. In other embodiments, the first shielding sheet 4 may also have one, two, four, or five first connecting portions 42 connected to each first grounding terminal 21. In this embodiment, the multiple first connecting portions 21 of the first shielding sheet 4 are welded together with the first grounding terminal 21 to fix the first shielding sheet 4. In other embodiments, the first shielding sheet 4 and the first row of terminals 2 are integrally injection molded for fixation.

[0060] The second shielding plate 5 is located between the second row of terminals 3 and the first row of terminals 2, increasing the signal shielding effect between the first row of terminals 2 and the second row of terminals 3 and avoiding signal crosstalk. There are two second shielding plates 5, each connected to the side of the second row of terminals 3 located on the left and right sides of the slot 11 that is furthest from each other, and each second shielding plate 5 is connected to the second grounding terminal 31 in the second row of terminals 3 on the left and right sides of the slot 11. The second shielding plate 5 includes a second shielding part 51 and multiple second connecting parts 52 connected to the second shielding part 51. The multiple second connecting parts 52 are connected and conductive to the multiple second grounding terminals 31 in the second row of terminals 3, suppressing resonance between the multiple second grounding terminals 31 and improving high-frequency transmission performance. The multiple second connecting parts 52 are arranged in two columns along the vertical direction, the two columns of second connecting parts 52 are aligned along the vertical direction, and each column of second connecting parts 52 is evenly distributed along the front-back direction. The two vertically aligned second connecting portions 52 in the second shielding sheet 5 are connected to the same second grounding terminal 31. The second shielding sheet 5 and each second grounding terminal 31 are connected via the two vertically aligned second connecting portions 52, which can suppress signal resonance in the second row of terminals 3 and improve high-frequency transmission performance. In this embodiment, the second shielding sheet 5 can be integrally injection molded with the second row of terminals 3. In other embodiments, the second shielding sheet 5 can also be welded to the second signal terminals 32.

[0061] In summary, the electrical connector 1000 of this utility model has the following beneficial effects:

[0062] (1) When the electronic card 6 is inserted into the slot 11 and comes into contact with the first signal contact 224, the first ground contact 214, the second signal contact 324, and the second ground contact 314, the first ground shield 215 abuts against the first ground arm 213 to form a closed ring together with the first ground bend 216 and the first ground contact 214 to shield the second signal terminal 32 in the vertical direction. This better prevents external signals from interfering with the second signal terminal 32 in the vertical direction, improves the shielding effect of the first ground terminal 21 on the second signal terminal 32, and allows the current flowing through the first ground terminal 21 to flow from the first ground contact 21 to the first ground contact 224. Part 214 can transmit current through the first grounding bend 216 and the entire first grounding arm 213, or directly through the first grounding shield 215, to the lower end of the first grounding arm 213, ultimately reaching the conductive position between the first grounding terminal 21 and the circuit board 7. This forms two transmission paths, increasing the grounding return path, improving signal shielding, and enhancing crosstalk prevention, thereby improving the high-frequency performance of the electrical connector 1000. Furthermore, the first conductive path, where current is directly transmitted from the first grounding shield 215 to the lower end of the first grounding arm 213 and finally reaches the conductive position between the first grounding terminal 21 and the circuit board 7, is more efficient than the path through the first grounding shield 215. The current from terminal 21 travels upward from the first grounding contact 214 through the first grounding bend 216 and the entire first grounding arm 213 to the second conductive path where the first grounding terminal 21 is connected to the circuit board 7. This shorter conductive path reduces the electrical length of the grounding return path, optimizes resonance, and improves signal transmission integrity and high-frequency performance of the electrical connector 1000. The second grounding shield 315 abuts against the second grounding arm 313 to form a closed ring with the second grounding bend 316 and the second grounding contact 314, shielding the first signal terminal 22 vertically and thus better preventing external interference in the vertical direction. The signal interference from the first signal terminal 22 is reduced, and the shielding effect of the second ground terminal 31 on the first signal terminal 22 is improved. The second ground shield 315 abuts against the second ground arm 313, so that the signal of the second ground terminal 31 can be transmitted from the second ground contact 314 upward through the second ground bend 316 or downward through the second ground shield 315 to the lower end of the second ground arm 313 and finally reach the conduction position between the second ground terminal 31 and the circuit board 7, thereby forming two transmission paths, increasing the ground return path, improving the signal shielding effect, improving the anti-crosstalk effect, and thus improving the high-frequency performance of the electrical connector 1000;Furthermore, the signal from the second grounding terminal 31 is directly transmitted from the second grounding shield 315 to the lower end of the second grounding arm 313, finally reaching the point where the second grounding terminal 31 is connected to the circuit board 7 via the first conductive path. This is shorter than the second conductive path where the current flowing through the second grounding terminal 31 travels upward from the second grounding contact 314 through the second grounding bend 316 and the entire second grounding arm 313 before reaching the point where the second grounding terminal 31 is connected to the circuit board 7. This shortens the electrical length of the grounding return path, optimizes resonance, and thus improves the integrity of signal transmission and enhances the high-frequency performance of the electrical connector 1000.

[0063] (2) Both sides of the slot 11 are provided with a first row of terminals 2 and a second row of terminals 3. The first ground terminal 21 in the first row of terminals 2 on the left side of the slot 11 and the first signal terminal 22 in the first row of terminals 2 on the right side of the slot 11 are arranged facing each other in the left and right direction, so that the first ground terminal 21 shields the first signal terminal 22 in the left and right direction, thereby better preventing external signal interference to the first signal terminal 22 in the left and right direction. The second ground terminal 31 in the second row of terminals 3 on the left side of the slot 11 and the second signal terminal 32 in the second row of terminals 3 on the right side of the slot 11 are arranged facing each other in the left and right direction, so that the second ground terminal 31 shields the second signal terminal 32 in the left and right direction, thereby better preventing external signal interference to the second signal terminal 32 in the left and right direction. At the same time, the second ground terminal 31 shields between the first signal terminal 22 and the second signal terminal 32, avoiding crosstalk between the first signal terminal 22 and the second signal terminal 32 in the left and right direction, thereby improving the high frequency performance of the electrical connector 1000.

[0064] (3) The first contact segment 2241 in the first signal terminal 22 is connected to the first coupling segment 2242 and the second coupling segment 2243 at its upper and lower ends respectively. The first coupling segment 2242 and the second coupling segment 2243 can couple with the first contact pad 61 of the electronic card 6, thereby reducing the length of the residual post extending upward and downward from the third contact segment on the first contact pad 61, thereby optimizing the integrity of signal transmission and improving the high-frequency performance of the electrical connector 1000. The second contact segment 3241 in the second signal terminal 32 is connected to the third coupling segment 3242 and the fourth coupling segment 3243 at its upper and lower ends respectively. The third coupling segment 3242 and the fourth coupling segment 3243 can couple with the second contact pad 62 of the electronic card 6, thereby reducing the length of the residual post extending upward and downward from the fourth contact segment on the second contact pad 62, thereby optimizing the integrity of signal transmission and improving the high-frequency performance of the electrical connector 1000.

[0065] (4) When the electronic card 6 is inserted into the slot 11 and contacts the first contact segment 2241, the first contact pad 61 on the electronic card 6 forms a plate capacitor with respect to the first signal contact portion 224 and the first signal abutment portion 225, thereby increasing the capacitance of the first signal contact portion 224 and the first signal abutment portion 225. Since the impedance is inversely proportional to the capacitance, when the width of the first signal contact portion 224 and the first signal abutment portion 225 is the same as that of the first signal arm 223, the impedance of the first signal contact portion 224 and the first signal abutment portion 225 is reduced. The impedance of the first signal arm 223 is small, which is not conducive to impedance matching of the signal terminal. Since inductance is inversely proportional to the width of the signal terminal and impedance is directly proportional to inductance, this solution narrows the width of the first signal contact 224 and the first signal abutment 225. This reduces the impedance difference between the first signal contact 224 / 225 and the first signal abutment 223, thereby improving impedance matching of the first signal arm 223, the first signal contact 224, and the first signal abutment 225 of the first signal terminal 22, and optimizing the insertion / return. To reduce losses and improve the high-frequency performance of the electrical connector 1000, similarly, when the electronic card 6 is inserted into the slot 11 and contacts the second contact section 3241, the second contact pad 62 on the electronic card 6 forms a planar capacitor with respect to the second signal contact portion 324 and the second signal abutment portion 325, thereby increasing the capacitance of the second signal contact portion 324 and the second signal abutment portion 325. When the width of the second signal contact portion 324 and the second signal abutment portion 325 is the same as that of the second signal arm 323, the capacitance of the second signal contact portion 324 and the second signal abutment portion 325 increases. The impedance of the contact portion 325 is smaller than that of the second signal arm 323, which is not conducive to impedance matching of the signal terminals. Therefore, this solution narrows the width of the second signal contact portion 324 and the second signal abutment portion 325 to reduce the impedance difference between the second signal contact portion 324, the second signal abutment portion 325 and the second signal arm 323, so that the impedance matching of the second signal arm 323, the second signal contact portion 324 and the second signal abutment portion 325 of the second signal terminal 32 is achieved, the insertion loss is optimized and the high-frequency performance of the electrical connector 1000 is improved.

[0066] (5) The first signal terminal 22 further includes a first signal embedding portion 222 extending downward from the first signal arm 223. The first signal embedding portion 222 is embedded and fixed in the insulating block 13, so that the first signal terminal 22 is stably fixed in the insulating block 13, and the first signal arm 223 is exposed outside the insulating block 13, so that the first signal contact portion 225 abuts against the first signal arm 223 to achieve electrical conduction. The second signal terminal 32 further includes a second signal embedding portion 322 extending downward from the second signal arm 323. The second signal embedding portion 322 is embedded and fixed in the insulating block 13, so that the second signal terminal 32 is stably fixed in the insulating block 13. Furthermore, the second signal arm 323 is exposed outside the insulating block 13, which facilitates the contact between the second signal contact portion 325 and the second signal arm 323 to achieve electrical conduction. A first signal mounting portion 221 extends from the first signal embedding portion 222 in a direction away from the slot 11, and a second signal mounting portion 321 extends from the second signal embedding portion 322 in a direction close to the slot 11. When the first signal terminal 22 and the second signal terminal 32 are soldered to the circuit board 7, the second signal mounting portion 321 and the first signal mounting portion 221 move away from each other in the left and right direction, which can prevent the second signal mounting portion 321 and the first signal mounting portion 221 from bridging.

[0067] (6) The second signal mounting portions 321 of the second row of terminals 3 located on both sides of the slot 11 extend towards each other in the left and right directions, and the distance between the two rows of second signal mounting portions 322 located on the left and right sides of the slot 11 is greater than the distance between the two rows of second signal mounting portions 321, thereby reducing crosstalk between the second signal terminals 32 on both sides of the slot 11. The second grounding terminal 31 in the second row of terminals 3 on the left side of the slot 11 and the second signal terminal 32 in the second row of terminals 3 on the right side of the slot 11 are arranged facing each other in the left and right directions, and when viewed from the projection direction from left to right, the second signal mounting portions 321 in the second row of terminals 3 on the left side of the slot 11 are more than the distance between the two rows of second signal mounting portions 321. The projections of the front and rear edges of the first signal embedding part 222 are located between the front and rear edges of the second grounding embedding part 312 in the second row of terminals 3 on the right side of the slot 11, so that the second grounding terminals 31 located on the left and right sides of the slot 11 have a better signal shielding effect on the second signal terminals 32, thereby improving the high-frequency performance of the electrical connector 1000; along the projection direction from left to right, the projections of the front and rear edges of the first signal embedding part 222 are located between the front and rear edges of the second grounding embedding part 312, so that the second grounding terminals 31 can better shield the first signal terminals 22 in the left and right direction, improving the anti-crosstalk effect, thereby optimizing the high-frequency performance of the electrical connector 1000.

[0068] (7) The first grounding bend 216 is provided with a first slot 217, thereby increasing the elasticity of the first grounding terminal 21 and reducing the insertion and extraction force when the electronic card 6 is inserted into the electrical connector 1000. The first slot 217 does not extend to the first grounding contact portion 214 and the first grounding shield portion 215, so as to avoid the reduction of the area of ​​the first grounding contact portion 214 and the first grounding shield portion 215 due to the provision of the first slot 217. The first grounding shield portion 215 is located between the first slot 217 and the second signal terminal 32 in the vertical direction, thereby shielding the noise or crosstalk signals passing through the first slot 217 in the vertical direction, and preventing the noise or crosstalk signals from passing through the second slot 317 and affecting the first signal terminal 22, thereby improving the shielding effect of the first grounding terminal 21 on the second signal terminal 32. The second signal terminal 32 is better protected from external signal interference in the vertical direction; the second grounding bend 316 has a second slot 317, which increases the elasticity of the second grounding terminal 31 and reduces the insertion and extraction force when the electronic card 6 is inserted into the electrical connector 1000. The second slot 317 does not extend to the second grounding contact part 314 and the second grounding shield part 315, so as to avoid the reduction of the contact area of ​​the first grounding contact part 214 and the shielding area of ​​the first grounding shield part 215 due to the setting of the first slot 217. The second grounding shield part 315 covers the bottom of the second slot 317, thereby preventing noise or crosstalk signals from passing through the second slot 317 and affecting the first signal terminal 22, thus better protecting the second signal terminal 32 from external signal interference in the vertical direction.

[0069] The above detailed description is only a description of the preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. 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 for inserting an electronic card, characterized in that, The application relates to an electronic card connector, comprising: an insulating base body, a slot being concavely arranged on the upper surface of the insulating base body, the slot being used for inserting the electronic card; a first row of terminals and a second row of terminals being arranged on the insulating base body and located on the same side of the slot along the left-right direction; the first row of terminals comprises first ground terminals and first signal terminals which are alternately arranged along the front-back direction; the first signal terminals have first signal contact portions which extend into the slot; the first ground terminals have first ground arms, first ground bending portions which extend from the upper ends of the first ground arms to the slot, first ground contact portions which are connected to the ends of the first ground bending portions away from the first ground arms and extend into the slot, and first ground shielding portions which extend from the lower ends of the first ground contact portions to the first ground arms; the second row of terminals is located below the first ground shielding portions and the first signal contact portions, and the second row of terminals comprises second signal terminals which are arranged in correspondence with the first ground terminals along the up-down direction and second ground terminals which are arranged in correspondence with the first signal terminals along the up-down direction; the second signal terminals have second signal contact portions which extend into the slot; the second ground terminals have second ground arms, second ground bending portions which extend from the upper ends of the second ground arms to the slot, second ground contact portions which are connected to the ends of the second ground bending portions away from the second ground arms and extend into the slot, and second ground shielding portions which extend from the lower ends of the second ground contact portions to the second ground arms; when the electronic card is inserted into the slot and contacts the first signal contact portions, the first ground contact portions, the second signal contact portions and the second ground contact portions, the first ground shielding portions abut against the first ground arms to form a closed loop together with the first ground bending portions and the first ground contact portions for shielding the second signal terminals along the up-down direction, and the second ground shielding portions abut against the second ground arms to form a closed loop together with the second ground bending portions and the second ground contact portions for shielding the first signal terminals along the up-down direction.

2. The electrical connector of claim 1, wherein: the first ground terminals in the first row of terminals located on the left side of the slot and the first signal terminals in the first row of terminals located on the right side of the slot are arranged opposite to each other along the left-right direction for shielding the first signal terminals along the left-right direction; and the second ground terminals in the second row of terminals located on the left side of the slot and the second signal terminals in the second row of terminals located on the right side of the slot are arranged opposite to each other along the left-right direction for shielding the second signal terminals along the left-right direction.

3. The electrical connector of claim 1, wherein: The first signal terminal further comprises a first signal arm, a first signal bending part extending from an upper end of the first signal arm to the slot, the first signal contact part being connected with the first signal bending part, and a first signal abutting part extending from a lower end of the first signal contact part to the first signal arm; the second signal terminal further comprises a second signal arm, a second signal bending part extending from an upper end of the second signal arm to the slot, the second signal contact part being connected with the second signal bending part, and a second signal abutting part extending from a lower end of the second signal contact part to the second signal arm; when the electronic card is inserted into the slot and contacts the first and second signal contact parts, the first signal abutting part abuts against the first signal arm, and the second signal abutting part abuts against the second signal arm.

4. The electrical connector of claim 3, wherein: The first signal contact part is used to conduct with a first contact pad of the electronic card, and the first signal contact part comprises a first coupling section connecting the first signal arm, a first contact section extending downward from the first coupling section, and a second coupling section connected to a lower end of the first contact section; the second signal contact part is used to conduct with a second contact pad of the electronic card, and the second signal contact part comprises a third coupling section connecting the second signal arm, a second contact section extending downward from the third coupling section, and a fourth coupling section connected to a lower end of the second contact section; when the electronic card is inserted into the slot, the first contact section contacts the first contact pad, the first and second coupling sections are respectively located on the upper and lower sides of the first contact pad and coupled with the first contact pad, the second contact section contacts the second contact pad, and the third and fourth coupling sections are respectively located on the upper and lower sides of the first contact section and coupled with the second contact pad.

5. The electrical connector of claim 4, wherein: The width of the first signal arm along the front-rear direction is greater than the width of the first signal contact part along the front-rear direction and the width of the first signal abutting part along the front-rear direction, and the width of the second signal arm along the front-rear direction is greater than the width of the second signal contact part along the front-rear direction and the width of the second signal abutting part along the front-rear direction.

6. The electrical connector of claim 3, wherein: The insulating seat body comprises an insulating shell and an insulating block mounted in the insulating shell, the first signal terminal further comprises a first signal embedding part extending downward from the first signal arm, the first signal embedding part is embedded and fixed in the insulating block, the first signal arm is exposed outside the insulating block, and a first signal mounting part extends from the first signal embedding part to a direction away from the slot; the second signal terminal further comprises a second signal embedding part extending downward from the second signal arm, the second signal embedding part is embedded and fixed in the insulating block, the second signal arm is exposed outside the insulating block, and a second signal mounting part extends from the second signal embedding part to a direction close to the slot.

7. The electrical connector of claim 6, wherein: The second ground terminal in the second row of terminals on the left side of the slot and the second signal terminal in the second row of terminals on the right side of the slot are arranged in a left-right direction and are directly opposite each other, so as to shield the second signal terminal in the left-right direction; the two rows of second signal mounting portions on the left and right sides of the slot extend towards each other in the left-right direction, and the distance between the two rows of second signal embedding portions on the left and right sides of the slot is greater than the distance between the two rows of second signal mounting portions; the second ground arm extends downward to a second ground embedding portion, and in a projection direction from left to right, the projections of the front and back side edges of the second signal embedding portion in the second row of terminals on the left side of the slot are located between the front and back side edges of the second ground embedding portion in the second row of terminals on the right side of the slot; the first ground arm extends downward to a first ground embedding portion, and in the projection direction from left to right, the projections of the front and back side edges of the first signal embedding portion are located between the front and back side edges of the second ground embedding portion.

8. The electrical connector of claim 6, wherein: The first ground arm extends upward and obliquely towards the slot, the first signal arm extends upward and obliquely towards the slot, and the upper end of the insulating block extends upward and obliquely to an oblique stop block, which abuts the side of the first ground arm and the first signal arm away from the slot.

9. The electrical connector of claim 1, wherein: The electrical connector further comprises a first shielding sheet and a second shielding sheet, the first shielding sheet is located on the side of the first row of terminals away from the second row of terminals, the first shielding sheet comprises a first shielding portion and a plurality of first connecting portions connected to the first shielding portion, a plurality of the first connecting portions are connected in conduction with a plurality of the first ground terminals in the first row of terminals, at least two first connecting portions in the first shielding sheet aligned in the up-down direction are connected in conduction with the same first ground terminal in the first row of terminals, the second shielding sheet is located between the second row of terminals and the first row of terminals, the second shielding sheet comprises a second shielding portion and a plurality of second connecting portions connected to the second shielding portion, a plurality of the second connecting portions are connected in conduction with a plurality of the second ground terminals in the second row of terminals, at least two second connecting portions in the second shielding sheet aligned in the up-down direction are connected in conduction with the same second ground terminal in the second row of terminals.

10. The electrical connector of claim 1, wherein: The first ground bending portion is provided with a first slot, the first slot does not extend to the first ground contact portion and the first ground shielding portion, and the first ground shielding portion is located between the first slot and the second signal terminal in the up-down direction to shield the first slot, the second ground bending portion is provided with a second slot, the second slot does not extend to the second ground contact portion and the second ground shielding portion, and the second ground shielding portion shields the lower side of the second slot.

Images