Electric connector

Abstract

The invention discloses an electric connector, which comprises an insulating body, a signal terminal, a grounding terminal, an insulating part, a loss part and a metal sheet, and is characterized in that the insulating body is provided with a slot, the slot is provided with a slot bottom surface, and the signal terminal comprises a signal elastic part positioned above the slot bottom surface; the grounding terminal comprises a grounding holding part and a grounding elastic part positioned above the bottom surface of the slot, the plug piece is provided with an insulating part, the loss piece is provided with an abutting part and a conductive convex part which are in contact with the grounding holding part, and the metal sheet comprises a main body part and an inclined section which extends upwards from the main body part in an inclined manner; the conductive convex part upwards exceeds the bottom surface of the slot and corresponds to the grounding elastic part, the insulating convex part is lower than the conductive convex part, and the inclined section exceeds the bottom surface of the slot, is higher than the insulating convex part and corresponds to the signal elastic part. Therefore, the loss part can absorb the coupling current on the grounding terminal, the inclined section reduces the crosstalk at the signal elastic part, and the signal integrity of the electric connector is improved.

Description

Technical Field

[0001] The present invention relates to an electrical connector, and more particularly to an electrical connector that improves crosstalk between terminals to meet higher transmission frequencies.

Background Art

[0002] An existing PCIE connector includes an insulating housing, two rows of terminals, and two grounding members located between the two rows of terminals. The insulating housing is recessed with a slot for inserting an electronic card. The slot has a bottom surface of the slot. The grounding members are all located below the bottom surface of the slot. Each row of terminals includes a plurality of signal terminals and a plurality of grounding terminals. Each grounding terminal includes a grounding fixing portion located below the bottom surface of the slot and a terminal elastic portion located above the bottom surface of the slot. Each signal terminal includes a signal fixing portion located below the bottom surface of the slot and a signal elastic portion extending upward beyond the bottom surface of the slot to enter the slot. The grounding members are arranged below the bottom surface of the slot corresponding to the signal fixing portions to shield the signal fixing portions to improve the crosstalk problem. However, this type of PCIE connector only improves the crosstalk of the signal fixing portions located below the slot, but there is still a crosstalk problem with the two rows of signal elastic portions located above the bottom surface of the slot, so that the connector cannot meet the high-frequency transmission specification requirements of the PCIE7.0 connector and cannot meet the higher-frequency transmission requirements.

[0003] Therefore, it is necessary to provide an electrical connector that improves crosstalk between terminals to meet higher transmission frequencies to overcome the above defects.

Summary of the Invention

[0004] Aiming at the problems in the background art, the purpose of the present invention is to provide an electrical connector in which a metal sheet is higher than the bottom surface of the slot and an insulating convex portion is lower than the bottom surface of the slot to improve crosstalk.

[0005] To achieve the above object, the present invention adopts the following technical solution: An electrical connector, characterized by comprising: an insulating body having a slot for inserting an electronic component, the slot having a slot bottom surface and two side walls located on the front and rear sides of the slot, the lower end of the insulating body being recessed upward to form a receiving cavity, the insulating body further comprising at least one signal slot and at least one ground slot that are recessed upward from the receiving cavity through the slot bottom surface and extend to the side walls; at least one terminal module mounted in the receiving cavity, the terminal module including a terminal seat and at least one signal terminal and at least one ground terminal fixed to the terminal seat, the signal terminals being received in the signal slots, the ground terminals being received in the ground slots, the ground terminals including a ground holding portion, a ground tail portion, and a ground elastic portion, the ground elastic portion protruding upward beyond the slot bottom surface, the signal terminals including a signal holding portion, a signal tail portion, and a signal elastic portion, the signal elastic portion protruding upward beyond the slot bottom surface; a metal sheet disposed on the side of the terminal module close to the slot, the metal sheet including a main body portion and at least one inclined section extending from the main body portion, the main body portion being located below the slot bottom surface, the main body portion overlapping with the signal holding portion in the front-rear direction to cover the signal holding portion, the inclined section overlapping with the signal elastic portion in the front-rear direction and being jointly received in a signal slot, the inclined section protruding upward beyond the slot bottom surface; an insulating member mounted in the receiving cavity and jointly clamping the metal sheet with the terminal seat, the insulating member extending upward at least one insulating isolation portion, the insulating isolation portion overlapping with the signal holding portion in the front-rear direction, the insulating isolation portion being exposed from the slot bottom surface and the insulating isolation portion being lower than the inclined section; at least one loss member, the loss member being combined with the insulating member, the loss member including a contact portion received in the ground slot and contacting the ground holding portion and a conductive convex portion located above the contact portion, the conductive convex portion being higher than the insulating isolation portion in the up-down direction.

[0006] Further, the main body portion includes at least one notch, the notch extending upward to the top end of the inclined section, the contact portion passing through the notch in the front-rear direction to contact the ground holding portion, the conductive convex portion passing through the notch in the front-rear direction and overlapping with the ground elastic portion in the front-rear direction with a gap therebetween, and the gap between the conductive convex portion and the ground elastic portion not exceeding 0.1 mm.

[0007] Further, the terminal seat has a top surface, the ground elastic portion protruding upward from the top surface, defining the size of the portion of the contact portion close to the metal sheet in the left-right direction as a first size, and the size in the left-right direction close to the ground terminal side as a second size, the first size being greater than the second size.

[0008] Further, a plurality of guiding slots are formed on the side of the terminal seat close to the slot, each guiding slot corresponding to expose the ground holding portion of a ground terminal, and the size of the guiding slot in the left-right direction gradually decreases from the side surface of the terminal seat toward the direction of the ground terminal to match the shape of the contact portion.

[0009] Further, the insulating member includes a first base portion received in the receiving cavity. The insulating and isolating portion protrudes upward from the first base portion. The main body portion includes a first section clamped between the first base portion and the terminal block and a second section vertically extending upward from the first section and connected to the inclined section. The second section is disposed corresponding to the insulating and isolating portion in the front-back direction and abuts against the insulating and isolating portion.

[0010] Further, a plurality of partition bars are connected to the side wall. The partition bar has a partition bar bottom surface. The receiving cavity is recessed to the partition bar bottom surface. The width of the second section in the left-right direction is greater than the width of the inclined section in the left-right direction. There are a plurality of signal terminals. A pair of signal terminals are received in a signal slot. The width of the second section in the left-right direction is greater than the width of a pair of signal holding portions in the left-right direction. The second section is received in the receiving cavity and the portion extending beyond the inclined section in the left-right direction is located below the partition bar bottom surface.

[0011] Further, the first base portion protrudes a positioning post toward the terminal block in the front-back direction. The terminal block protrudes a mounting post toward the first base portion in the front-back direction. The first section is provided with a positioning hole and a through hole. The positioning post and the positioning hole are fastened and matched to assemble and position the metal sheet. The mounting post passes through the through hole and is fixed to the first base portion.

[0012] Further, the highest point where the conductive convex portion extends upward is lower than the highest point where the inclined section extends upward.

[0013] Further, the metal sheet further includes a plurality of welding feet extending from the main body portion. Each welding foot is disposed corresponding to a grounding tail portion in the front-back direction. The dimension of the welding foot in the left-right direction is not less than the dimension of the grounding tail portion in the left-right direction.

[0014] Further, in the front-back direction, the signal elastic portion is closer to the metal sheet than the signal tail portion. The signal holding portion is in a flat plate shape and extends obliquely upward toward the slot. In the front-back direction, there is a first distance between the upper end of the signal holding portion and the main body portion, and the first distance is between 0.25 mm and 0.40 mm. There is a second distance between the lower end of the signal holding portion and the main body portion, and the second distance is between 0.52 mm and 0.70 mm.

[0015] Advantages of the present invention:

[0016] The abutting portion on the consumable part of the present invention is correspondingly arranged and in contact with the grounding and holding portion of the grounding terminal, so that the guiding abutting portion can absorb the capacitive coupling current and inductive coupling current generated on the grounding and holding portion, thereby suppressing mutual capacitance and mutual inductance and improving far-end crosstalk; the insulating isolation portion is exposed from the bottom surface of the slot and is lower than the inclined section to make way for the inclined section, so that the inclined section has an upward extending space to ensure that the inclined section can extend obliquely upward in the direction close to the signal elastic portion. The inclined section protrudes upward into the signal slot to block the signal elastic portion. The inclined section blocking the signal elastic portion can block the crosstalk generated by the signal reflection of the signal elastic portion, thereby reducing the crosstalk at the signal elastic portion, improving the signal integrity of the electrical connector, and enabling it to meet higher transmission frequencies.

Explanation of Drawings

[0017] Figure 1 Is a perspective view of the electrical connector of the present invention installed on a circuit board and docked with a docking component;

[0018] Figure 2 Is Figure 1 The exploded view of the electrical connector in

[0019] Figure 3 Is Figure 2 The enlarged view of another perspective of the insulating body in

[0020] Figure 4 Is Figure 1 The front view of the electrical connector in

[0021] Figure 5 Is Figure 4 The cross-sectional view along the A-A cutting line in

[0022] Figure 6 Is Figure 5 The partial enlarged view of D in

[0023] Figure 7 Is Figure 4 The cross-sectional view along the B-B cutting line in

[0024] Figure 8 Is Figure 7 The cross-sectional view at another angle in

[0025] Figure 9 Is Figure 4 The cross-sectional view along the C-C cutting line in

[0026] Figure 10 Is Figure 9 The partial enlarged view of E in

[0027] Figure 11 Is the cross-sectional view of the electrical connector of the present invention cut downward along the slot;

[0028] Figure 12This is a cross-sectional view of the exposed metal sheet of the electrical connector of the present invention cut downward on the side wall;

[0029] Figure 13 This is a partial front view showing only one row of terminals and one metal sheet;

[0030] Figure 14 This is a far-end crosstalk simulation analysis diagram of the prior art;

[0031] Figure 15 This is a far-end crosstalk simulation analysis diagram of the present invention.

[0032]

[0033]

Detailed Implementation Manner

[0034] For better understanding of the purpose, structure, features, and effects of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0035] In the present invention, it should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the directions or positional relationships shown in the accompanying drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0036] As Figure 1 shown, the electrical connector 100 of the present invention is respectively used for electrically connecting with the docking element 200 and the circuit board 300. The electrical connector 100 is located above the circuit board 300, and the docking element 200 is inserted downward into the electrical connector 100. Specifically, in this embodiment, an MCIO socket type connector is taken as an example for illustration, and the docking element 200 is specifically an electronic card. Of course, in other embodiments, it can also be other socket type electrical connectors 100 such as PCIE and SFF, and the docking element 200 can also be a docking connector, which is not limited herein.

[0037] As Figure 2 shown, the electrical connector 100 includes an insulating body 1, two terminal modules 2 installed on the insulating body 1 and opposite to each other in the front-rear direction, an insulating member 3 disposed between the two terminal modules 2, two loss elements 4 combined with the insulating member 3, and two metal sheets 5 respectively clamped between the two terminal modules 2 and the insulating member 3. In other embodiments, only one terminal module 2, loss element 4, and metal sheet 5 installed on the insulating body 1 may also be provided.

[0038] As Figure 2 , Figure 3 and Figure 5As shown in the figure, the insulating body 1 has a slot 11, two side walls 12, a receiving cavity 13, a plurality of signal grooves 14, a plurality of ground grooves 15 and a plurality of partitions 16. Specifically, the slot 11 is recessed downward from a surface of the insulating body 1 for inserting the docking element 200. The slot 11 has a slot bottom surface 111 at the lowermost part in the up-and-down direction. The two side walls 12 are located on both sides of the slot 11 in the front-and-back direction. The receiving cavity 13 is recessed on the side of the insulating body 1 away from the slot 11 for receiving the insulating member 3. The plurality of signal grooves 14 and the plurality of ground grooves 15 continue to be recessed upward from the receiving cavity 13 through the slot bottom surface 111 and extend to the two side walls 12. A plurality of partitions 16 are provided on each side wall 12. The partition 16 has a partition bottom surface 161. The receiving cavity 13 is recessed to the partition bottom surface 161. The adjacent signal grooves 14 and ground grooves 15 are separated by the partition 16. In other embodiments, the electrical connector 100 may be provided with signal grooves 14, ground grooves 15 and partitions 16 only on one side wall 12.

[0039] As Figure 2 and Figure 5 shown, two terminal modules 2 are respectively installed on the two side walls 12 on both sides of the slot 11. Each terminal module 2 includes a terminal seat 21 and a plurality of signal terminals S and a plurality of ground terminals G fixed on the terminal seat 21 and arranged in a row in the left-and-right direction. The terminal seat 21 has a top surface 211 in the same plane as the slot bottom surface 111, a side surface 212 close to the slot 11, a plurality of guiding grooves 213 recessed from the side surface 212, and mounting posts 214 protruding from the side surface 212. Each signal terminal S includes a signal holding portion S1, a signal tail S2 connected to the lower end of the signal holding portion S1, a signal elastic portion S3 connected to the upper end of the signal holding portion S1. The signal elastic portion S3 is provided with a signal contact portion S4 protruding into the slot 11. The signal elastic portion S3 extends upward beyond the top surface 211 of the terminal seat 21 and enters the signal groove 14. The signal elastic portion S3 extends beyond the slot bottom surface 111 and extends obliquely toward the slot 11. The signal holding portion S1 is fixed to the terminal seat 21. Each ground terminal G includes a ground holding portion G1, a ground tail G2 connected to the lower end of the ground holding portion G1, a ground elastic portion G3 connected to the upper end of the ground holding portion G1. The ground elastic portion G3 is provided with a ground contact portion G4 protruding into the slot 11. The ground elastic portion G3 extends upward beyond the top surface 211 of the terminal seat 21 and enters the ground groove 15. The ground elastic portion G3 extends beyond the slot bottom surface 111 and extends obliquely toward the slot 11. The ground holding portion G1 is fixed to the terminal seat 21 and a part of the ground holding portion G1 is exposed in the guiding groove 213.

[0040] As Figure 5 and Figure 8As shown, the grounding holding part G1 extends obliquely upward toward the side close to the slot 11. The upper end of the grounding holding part G1 is closer to the slot 11 in the front-rear direction than the lower end of the grounding holding part G1. Specifically, the grounding holding part G1 is in the shape of a flat plate and extends obliquely upward toward the side of the slot 11 from bottom to top and connects the grounding elastic part G3 and the grounding tail part G2. With such a setting, the length of the grounding holding part G1 is the shortest length between the grounding elastic part G3 and the grounding tail part G2, so that the transmission path of the grounding terminal G is the shortest path, improving the terminal transmission performance. The signal holding part S1 has the same structure as the above-mentioned grounding holding part G1. The signal terminals S are arranged in pairs, and two signal terminals S located between two adjacent grounding terminals G form a differential signal pair for transmitting differential signals, and one differential signal pair is received in one signal slot 14.

[0041] As Figure 2 , Figure 5 and Figure 7 shown, the insulating part 3 is received in the accommodation cavity 13 and is located between the two terminal modules 2. The insulating part 3 is made of an insulating material and includes a first base part 31 and a plurality of insulating isolation parts 32 protruding upward from the first base part 31. Specifically, each insulating isolation part 32 protrudes upward from the first base part 31 into a corresponding signal slot 14. The insulating isolation part 32 and the signal holding part S1 are arranged corresponding to each other in the front-rear direction. The insulating isolation part 32 is exposed from the slot bottom surface 111, and the plurality of insulating isolation parts 32 are arranged in two rows in the left-right direction. The first base part 31 protrudes two positioning posts 311 in the front-rear direction toward the terminal seat 21, and the positioning posts 311 cooperate with the metal sheet 5.

[0042] As Figure 5 , Figure 6 and Figure 10As shown, two loss components 4 are located between two terminal modules 2 and are assembled or fitted into the insulating member 3. The loss component 4 is made of a conductive loss material and includes a second base 41, a plurality of abutting portions 42 protruding upward from the second base 41, and a conductive convex portion 43 located above each abutting portion 42. Each abutting portion 42 and the conductive convex portion 43 located above it enter into a corresponding grounding groove 15. Specifically, the abutting portion 42 is below the bottom surface 111 of the slot and protrudes in the front-rear direction to contact the grounding holding portion G1, and the conductive convex portion 43 extends upward beyond the bottom surface 111 of the slot and overlaps and is spaced apart from the grounding elastic portion G3 in the front-rear direction. The conductive convex portion 43 is located above the first base 31 and protrudes in the front-rear direction from the first base 31. The gap between the conductive convex portion 43 and the grounding elastic portion G3 does not exceed 0.1 mm. The dimension of the side of the abutting portion 42 close to the metal sheet 5 in the left-right direction is the first dimension H1, and the dimension of the side close to the grounding terminal G in the left-right direction is the second dimension H2. The first dimension H1 is greater than the second dimension H2. The abutting portion 42 extends into the guiding groove 213 to contact the grounding holding portion G1. The dimension of the guiding groove 213 in the left-right direction gradually decreases from the side surface 212 toward the grounding terminal G to match the shape of the abutting portion 42. The plurality of abutting portions 42 are arranged in a row in the left-right direction on the two second bases 41 respectively, and each row of abutting portions 42 corresponds to one terminal module 2. The insulating isolation portion 32 and the abutting portions 42 are alternately arranged in the left-right direction. The conductive convex portion 43 protrudes upward from above the abutting portion 42, and the height of the conductive convex portion 43 protruding upward is higher than that of the insulating isolation portion 32. Of course, in other embodiments, only one loss component 4 may be provided. One loss component 4 is assembled or fitted into the insulating member 3, and the plurality of abutting portions 42 protrude upward from the second base 41 and are arranged in two rows in the left-right direction.

[0043] As Figure 2 , Figure 5 , Figure 7 and Figure 13 shown, each metal sheet 5 is clamped between the terminal block 21 and the insulating member 3. The metal sheet 5 includes a main body portion 51, a plurality of inclined segments 52 extending obliquely upward from the main body portion 51, a plurality of welding legs 53 extending downward from the main body portion 51, and a plurality of notches 54 opened from the main body portion 51. The welding legs 53 extend out of the insulating body 1 and correspond to the grounding tail G2 in the front-rear direction. The main body portion 51 is received in the receiving cavity 13 and is clamped between the insulating member 3 and the terminal block 21 in the front-rear direction and corresponds to the signal holding portion S1. The inclined segments 52 extend into the signal groove 14 and correspond to the signal elastic portion S3 in the front-rear direction. The notch 54 extends upward to the top of the inclined segment 52, that is, adjacent two inclined segments 52 are disconnected by a notch 54.

[0044] As Figure 7 , Figure 12 and Figure 13As shown, the main body portion 51 is disposed below the bottom surface 111 of the slot, and includes a first section 51a located below the abutting portion 42 and a second section 51b extending upward from the first section 51a and connected to the inclined section 52. The notch 54 extends downward to the first section 51a. The first section 51a is clamped between the first base 31 and the terminal seat 21. The second section 51b abuts against the insulating isolation portion 32. The conductive convex portion 43 is disposed higher than the second section 51b. Two positioning holes 511 and a plurality of via holes 512 approximately at the same height as the positioning holes 511 are provided on the first section 51a. The positioning post 311 and the positioning holes 511 are tightly fitted with each other to position the metal sheet 5 to the first base 31 without shaking, facilitating the mounting post 214 on the terminal seat 21 to pass through the via holes 512 and be fixed to the first base 31, so that the insulator 3, the metal sheet 5 and the terminal seat 21 are assembled together. The second section 51b is received in the receiving cavity 13 and its dimension in the left-right direction exceeds the dimension of a pair of signal holding portions S1 in the left-right direction. The dimension of the second section 51b in the left-right direction is greater than the dimension of the inclined section 52 in the left-right direction, that is, the second section 51b exceeds the inclined section 52 on both the left and right sides. The portions of the second section 51b exceeding the inclined section 52 in the left-right direction are below the bottom surface 161 of the partition. The abutting portion 42 passes through the notch 54 in the front-rear direction and contacts the ground holding portion G1. In the front-rear direction, there is a first distance between the upper end of the signal holding portion S1 and the second section 51b, and the first distance is between 0.25 mm and 0.40 mm. There is a second distance between the lower end of the signal holding portion S1 and the first section 51a, and the second distance is between 0.52 mm and 0.70 mm.

[0045] As Figure 8 , Figure 11 and Figure 13 shown, the inclined section 52 is above the bottom surface 111 of the slot and extends into the signal slot 14 and is correspondingly arranged with a pair of signal elastic portions S3. The dimension of the inclined section 52 in the left-right direction is substantially the same as the dimension of a pair of signal elastic portions S3 in the left-right direction. The height of the inclined section 52 protruding upward is greater than the height of the insulating isolation portion 32 and the conductive convex portion 43 protruding upward. The conductive convex portion 43 passes through the notch 54 between two adjacent inclined sections 52 in the front-rear direction and overlaps with the ground elastic portion G3. The gap between the conductive convex portion 43 and the ground elastic portion G3 is smaller than the gap between the inclined section 52 and the signal terminal S. Each welding foot 53 corresponds to a ground tail G2. The welding foot 53 and the ground tail G2 are jointly welded to the circuit board 300. The dimension of the welding foot 53 in the left-right direction is not less than the dimension of the ground tail G2 in the left-right direction.

[0046] Figure 14 is the far-end crosstalk analysis diagram of the prior art electrical connector. The dotted line is the standard baseline of the 7.0 connector. When the prior art connector has not reached 40 GHz, it exceeds the baseline and does not meet the standard of the 7.0 connector. Figure 15This is the far-end crosstalk analysis diagram of the connector of the present invention. The far-end simulation curve of the present invention is always below the 7.0 standard baseline within the range of 0 - 48 GHz, meeting the standards of 7.0 connectors and improving the signal integrity of the electrical connector.

[0047] The present invention has the following beneficial effects:

[0048] 1. The abutting portion 42 of the loss component 4 of the present invention is correspondingly arranged and in contact with the grounding holding portion G1 of the grounding terminal G, so that the abutting portion 42 can absorb the capacitive coupling current and inductive coupling current generated on the grounding holding portion G1, thereby suppressing mutual capacitance and mutual inductance and improving far-end crosstalk; the insulating isolation portion 32 is exposed from the bottom surface 111 of the slot and the insulating isolation portion 32 is lower than the inclined section 52 to make way for the inclined section 52, so that the inclined section 52 has an upward extension space to ensure that the inclined section 52 can extend obliquely upward in the direction close to the signal elastic portion S3. The inclined section 52 protrudes upward into the signal slot 14 to block the signal elastic portion S3. The inclined section 52 blocking the signal elastic portion S3 can block the crosstalk generated by the signal reflection of the signal elastic portion S3, thereby reducing the crosstalk at the signal elastic portion S3 and improving the signal integrity of the electrical connector 100, so as to meet higher transmission frequencies.

[0049] 2. The abutting portion 42 is in contact with the grounding holding portion G1, and the distance between the conductive convex portion 43 and the grounding elastic portion G3 does not exceed 0.1 mm. The conductive convex portion 43 protrudes upward beyond the bottom surface 111 of the slot, increasing the electrical coupling area between the grounding terminal G and the conductive convex portion 43, so that the conductive convex portion 43 can quickly absorb the capacitive coupling current and inductive coupling current on the grounding elastic portion G3 and improve the crosstalk problem.

[0050] 3. The size of the abutting portion 42 on the side close to the grounding terminal G is small, so that the distance from the edge of the abutting portion 42 in the left-right direction to two adjacent signal terminals S is relatively increased, effectively reducing the absorption of the signal transmitted on the signal terminal S by the loss component 4 and enhancing the signal integrity of the electrical connector 100.

[0051] 4. The shape of the guiding groove 213 is adapted to the shape of the connecting portion, and the width of the guiding groove 213 in the left-right direction gradually decreases from the side surface 212 towards the grounding terminal G, which is convenient for the abutting portion 42 to be inserted into the guiding groove 213 to contact the grounding terminal G.

[0052] 5. The second section 51b abuts against the insulating isolation portion 32, preventing the metal sheet 5 from shifting in a vibrating environment after installation.

[0053] 6. The conductive convex portion 43 is lower than the inclined section 52. On the one hand, it avoids the conductive convex portion 43 protruding too high upwards and absorbing too much of the signal transmitted by the signal terminal S. On the other hand, it reduces the risk of fracture of the conductive convex portion 43, and the inclined section 52 being higher than the conductive convex portion 43 can block the electromagnetic waves absorbed by the conductive convex portion 43.

[0054] 7. The second section 51b is received in the accommodation cavity 13 and the part extending beyond the inclined section 52 in the left - right direction is located below the bottom surface 161 of the partition. When the metal sheet 5 is assembled upwards, the partition 16 can prevent the second section 51b from continuing to move upwards, which may cause inaccurate assembly position of the metal sheet 5, ensuring that the inclined portion is received in the signal groove 14 and facilitating the upward assembly of the metal sheet 5 in place.

[0055] 8. The dimension of the welding foot 53 in the left - right direction is not less than the dimension of the grounding tail G2 in the left - right direction on the two terminal modules 2, so that the grounding tails G2 arranged oppositely in the front - back direction on the two terminal modules 2 are shielded by the welding foot 53, reducing crosstalk between the two terminal modules 2.

[0056] 9. Since the terminal base 21 and the signal holding portion S1 are injection - molded, the dielectric constant near the signal holding portion S1 is relatively large, and the impedance is inversely proportional to the dielectric constant. Therefore, the impedance of the signal holding portion S1 is small. The impedance of the signal holding portion S1 is also proportional to the size of the first distance and the size of the second distance. The distance between the metal sheet 5 and the signal terminal S needs to be within a suitable range to achieve the best effect of optimizing crosstalk. The first distance is between 0.25 mm and 0.40 mm, and the second distance is between 0.52 mm and 0.70 mm. Avoiding the first distance and the second distance being too small causes large return loss of the signal terminal S; avoiding the first distance and the second distance being too large results in poor shielding effect of the near - vision sheet, and when the first distance and the second distance are too large, the inclined section 52 of the metal sheet 5 may enter the slot 11, affecting the normal insertion of the docking component 200.

[0057] 10. The positioning post 311 protrudes from the first base 31 and is tightly fitted with the positioning hole 511 on the metal sheet 5 to position the metal sheet 5 so that it does not shake, ensuring that the inclined section 52 can be aligned with the shielding signal elastic portion S3 without skewing. At the same time, it facilitates the mounting post 214 on the terminal base 21 to pass through the through - hole 512 and be fixedly assembled with the insulating member 3.

[0058] 11. The insulating isolation portion 32 is arranged overlapping with the signal holding portion S1 in the front - back direction. The insulating isolation portion increases the amount of plastic around the signal holding portion S1 and improves the impedance of the signal holding portion S1.

[0059] The above - detailed description is only for the description of the preferred embodiments of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the content of this creation specification and the drawings are included in the patent scope of this creation.

Claims

1. An electrical connector for docking with an electronic component, characterized in that, Comprising: An insulating body having a slot for inserting an electronic component. The slot has a bottom surface and two side walls located on the front and rear sides of the slot. The lower end of the insulating body is recessed upward to form a receiving cavity. The insulating body further includes at least one signal slot and at least one ground slot that are recessed upward from the receiving cavity, penetrate the bottom surface of the slot, and extend to the side walls. At least one terminal module is installed in the receiving cavity. The terminal module includes a terminal base and at least one signal terminal and at least one ground terminal fixed to the terminal base. The signal terminal is received in the signal slot, and the ground terminal is received in the ground slot. The ground terminal includes a ground holding portion, a ground tail portion, and a ground elastic portion. The ground elastic portion extends upward beyond the bottom surface of the slot. The signal terminal includes a signal holding portion, a signal tail portion, and a signal elastic portion. The signal elastic portion extends upward beyond the bottom surface of the slot. A metal sheet is disposed on the side of the terminal module close to the slot. The metal sheet includes a main body portion and at least one inclined section extending from the main body portion. The main body portion is located below the bottom surface of the slot. The main body portion is overlapped with the signal holding portion in the front-rear direction to cover the signal holding portion. The inclined section is overlapped with the signal elastic portion in the front-rear direction and is jointly received in a signal slot. The inclined section extends upward beyond the bottom surface of the slot. An insulating member is installed in the receiving cavity and jointly clamps the metal sheet with the terminal base. The insulating member extends upward at least one insulating isolation portion. The insulating isolation portion is overlapped with the signal holding portion in the front-rear direction. The insulating isolation portion is exposed from the bottom surface of the slot and the insulating isolation portion is lower than the inclined section. At least one loss member is combined with the insulating member. The loss member includes a contact portion received in the ground slot and contacting the ground holding portion and a conductive convex portion located above the contact portion. The conductive convex portion is higher than the insulating isolation portion in the up-down direction.

2. The electrical connector according to claim 1, characterized in that: The main body portion includes at least one notch. The notch extends upward to the top end of the inclined section. The contact portion passes through the notch in the front-rear direction to contact the ground holding portion. The conductive convex portion passes through the notch in the front-rear direction and is overlapped with the ground elastic portion in the front-rear direction and there is a gap. The gap between the conductive convex portion and the ground elastic portion does not exceed 0.1 mm.

3. The electrical connector according to claim 2, wherein: The terminal base has a top surface. The ground elastic portion extends upward out of the top surface. Define the size of the portion of the contact portion close to the metal sheet in the left-right direction as the first size, and the size of the portion close to the ground terminal in the left-right direction as the second size. The first size is greater than the second size.

4. The electrical connector according to claim 1, characterized in that: A plurality of guiding slots are formed on the side of the terminal base close to the slot. Each guiding slot corresponds to expose the ground holding portion of a ground terminal. The size of the guiding slot in the left-right direction gradually decreases from the side surface of the terminal base toward the direction of the ground terminal to match the shape of the contact portion.

5. The electrical connector according to claim 1, wherein: The insulating member includes a first base portion. The first base portion is received in the receiving cavity. The insulating isolation portion protrudes upward from the first base portion. The main body portion includes a first section clamped between the first base portion and the terminal base and a second section extending vertically upward from the first section and connected to the inclined section. The second section is correspondingly arranged with the insulating isolation portion in the front-rear direction and the second section abuts against the insulating isolation portion.

6. The electrical connector according to claim 5, wherein: The side wall is connected with a plurality of partitions. Each partition has a partition bottom surface. The accommodating cavity is recessed to the partition bottom surface. The width of the second section in the left-right direction is greater than the width of the inclined section in the left-right direction. There are a plurality of signal terminals. A pair of signal terminals are received in a signal slot. The width of the second section in the left-right direction is greater than the width of a pair of signal holding portions in the left-right direction. The second section is received in the accommodating cavity and the part extending beyond the inclined section in the left-right direction is located below the partition bottom surface.

7. The electrical connector according to claim 5, wherein: The first base protrudes forward and backward towards the terminal block with positioning posts. The terminal block protrudes forward and backward towards the first base with mounting posts. The first section is provided with a positioning hole and a through hole. The positioning post and the positioning hole are tightly fitted to assemble and position the metal sheet. The mounting post passes through the through hole and is fixed to the first base.

8. The electrical connector according to claim 1, wherein: The highest point where the conductive convex portion extends upward is lower than the highest point where the inclined section extends upward.

9. The electrical connector according to claim 1, wherein: The metal sheet further includes a plurality of welding feet extending from the main body portion. Each welding foot is arranged corresponding to a grounding tail in the front-back direction. The dimension of the welding foot in the left-right direction is not less than the dimension of the grounding tail in the left-right direction. The electrical connector includes two terminal modules. The metal sheet is located between the two terminal modules in the front-back direction to shield the two terminal modules.

10. The electrical connector according to claim 1, wherein: In the front-back direction, the signal elastic portion is closer to the metal sheet than the signal tail. The signal holding portion is in a flat plate shape and extends obliquely upward towards the slot. In the front-back direction, there is a first distance between the upper end of the signal holding portion and the main body portion. The first distance is between 0.25 mm and 0.40 mm. There is a second distance between the lower end of the signal holding portion and the main body portion. The second distance is between 0.52 mm and 0.70 mm.

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