Plug connector

Abstract

A plug connector includes a plug body, a plurality of plug terminals arranged on the plug body, and a plug grounding plate, wherein the plug terminals include a plurality of pairs of differential signal terminals and a plurality of grounding terminals arranged in a row, wherein the grounding terminals are arranged at intervals between two adjacent pairs of differential signal terminals, wherein the plug grounding plate is integrally provided with a plurality of first connecting portions, a second connecting portion, and a third connecting portion, wherein each grounding terminal is respectively connected to the first, second, and third connecting portions at different positions thereof, thereby improving signal crosstalk and improving the performance of high-frequency transmission.

Description

[Technical field]

[0001] The invention relates to a plug connector, in particular to a plug connector used for high-frequency transmission. [Background technology]

[0002] For related prior art, please refer to the U.S. invention patent US20090221165, which discloses a high-frequency connector with a transmission bandwidth of up to 6 Gbps. The high-frequency connector includes an insulating body and a plurality of conductive terminals retained in the insulating body. The conductive terminals include ground terminals and differential signal terminals arranged in pairs. A grounding plate electrically connects the grounding terminals to reduce signal crosstalk and improve the high-frequency performance of the connector.

[0003] At present, the PCI-SIG Association has announced that the signal transmission rate of the PCIe4.0 specification has reached 16GT / s, and the transmission bandwidth has reached 64Gbps. The signal transmission rate of the PCIe5.0 specification currently under development announced by the PCI-SIG Association will be further doubled to 32GT / s, and its transmission bandwidth will even reach 128Gbps. In such a rapidly developing field of high-frequency connectors, the grounding plate in the existing technology can no longer meet its high-frequency performance.

[0004] Therefore, it is necessary to provide an improved plug connector to solve the above problems. [Summary of the invention]

[0005] The main purpose of the present invention is to provide a plug connector with good high frequency performance.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a plug connector, comprising a plug body, a plurality of plug terminals arranged on the plug body and a plug grounding plate, wherein the plug terminals include a plurality of pairs of differential signal terminals and a plurality of grounding terminals arranged in a row, wherein the grounding terminals are arranged at intervals between two adjacent pairs of differential signal terminals, wherein the plug grounding plate is integrally provided with a plurality of first connecting portions, a second connecting portion and a third connecting portion, and each of the grounding terminals is respectively connected to the first, second and third connecting portions at different positions thereof.

[0007] Furthermore, the plug body includes a base extending in the longitudinal direction and a tongue extending forward from the base; each plug terminal is provided with a contact portion exposed on the tongue, a tail extending outside the plug body, a retaining portion located between the contact portion and the tail and retained at the base, and a narrowing portion extending forward from the front end of the contact portion, wherein the width of the narrowing portion is smaller than that of the contact portion; the first connecting portion is connected to the narrowing portion of the grounding terminal, the second connecting portion is connected to the contact portion of the grounding terminal, and the third connecting portion is connected to the retaining portion of the grounding terminal.

[0008] Furthermore, the tongue plate is recessed with a plurality of terminal grooves, the contact portion and the narrowed portion are accommodated in the corresponding terminal grooves, steps are provided on both sides of the narrowed portion, and protrusions are provided on both sides of the front end of the terminal groove to press against the corresponding steps.

[0009] Furthermore, the plug connector also includes an insulating strip assembled to the base of the plug body, the retaining portions of the differential signal terminals and the grounding terminals are embedded in the insulating strip, the insulating strip is provided with a plurality of notches facing the grounding plate, and the third connecting portion is accommodated in the corresponding notches.

[0010] Furthermore, the grounding plate includes a pair of beam portions extending in the longitudinal direction and a plurality of bridging portions connected between the pair of beam portions, the first and second connecting portions are formed by extending in opposite directions from the same beam portion, the third connecting portion is formed by extending from another beam portion towards the second connecting portion, and the second and third connecting portions are located between the two beam portions in the front-to-back direction, and the first, second and third connecting portions connected to the same grounding terminal extend on the same straight line in the front-to-back direction.

[0011] Furthermore, a distance between the front and rear of the first and second connecting parts connected to the same ground terminal is smaller than a distance between the front and rear of the corresponding second and third connecting parts.

[0012] To achieve the above-mentioned purpose, the present invention also adopts the following technical scheme: a plug connector, comprising a plug body, a plurality of plug terminals arranged on the plug body, and a plug grounding plate assembled on the plug body; the plug body comprises a base extending in the longitudinal direction and a tongue plate extending forward from the base; the plug terminals comprise a plurality of pairs of differential signal terminals and a plurality of grounding terminals arranged on the lower surface of the tongue plate and arranged in a row, the grounding terminals being arranged at intervals between two adjacent pairs of differential signal terminals, wherein the plug connector is configured to support a signal transmission rate of more than 32GT / s, and the plug grounding plate is integrally provided with at least three downwardly bent and extending connection portions corresponding to each grounding terminal, which are respectively connected to different positions of the corresponding grounding terminals.

[0013] Furthermore, each plug terminal is provided with a contact portion exposed on the tongue plate, a tail portion extending outside the plug body, a retaining portion located between the contact portion and the tail portion and retained at the base, and a narrowing portion extending forward from the front end of the contact portion, wherein the width of the narrowing portion is smaller than that of the contact portion; the three connecting portions are respectively retained downward on the upper surfaces of the narrowing portion, the contact portion and the retaining portion of the corresponding grounding terminal.

[0014] Furthermore, the plug terminal includes a plurality of pairs of differential signal terminals and ground terminals which are arranged on the upper surface of the tongue plate and arranged in another row, and the plug grounding plate is integrally provided with at least two upwardly bent and extended connection parts corresponding to each grounding terminal in the other row, which are respectively connected to different positions of the corresponding grounding terminals; the at least two connection parts respectively abut upward against the lower surfaces of the contact parts and the retaining parts of the corresponding grounding terminals in the other row, the width of the upwardly bent and extended connection parts along the longitudinal direction is smaller than that of the downwardly bent and extended connection parts, and the length of the upwardly bent and extended connection parts along the front-to-back direction is equal to that of the downwardly bent and extended connection parts.

[0015] Furthermore, the plug connector also includes an insulating strip and an insulating block assembled to the base of the plug body from back to front, the retaining portions of the one row of differential signal terminals and the grounding terminals are embedded in the insulating strip, the retaining portions of the other row of differential signal terminals and the grounding terminals are embedded in the insulating block, and the grounding plate is assembled to the plug body from back to front and clamped between the insulating strip and the insulating block.

[0016] Compared with the prior art, the plug grounding plate of the present invention is provided with three connection parts, namely the first, second and third connection parts are respectively connected to different positions of each grounding terminal, thereby improving signal crosstalk and improving the performance of high-frequency transmission, while achieving impedance continuity of the plug terminal and avoiding impedance mutation in the circuit.

Brief Description of the Drawings

[0017] Figure 1 It is a three-dimensional schematic diagram of the butt-jointed mating of the plug connector and the socket connector of the present invention.

[0018] Figure 2 yes Figure 1 A three-dimensional schematic diagram from another angle.

[0019] Figure 3 yes Figure 1 Exploded diagram of .

[0020] Figure 4 yes Figure 3 Exploded view from another angle.

[0021] Figure 5 is a partially exploded view of the plug connector.

[0022] Figure 6 yes Figure 5 Partially exploded view from another angle.

[0023] Figure 7 It is an exploded view of the plug terminals and the plug grounding plate.

[0024] Figure 8 is a partially exploded view of the socket connector.

[0025] Fig. 9 yes Figure 8 Partially exploded view from another angle.

[0026] Fig.10 It is an exploded view of the socket terminals and the socket grounding plate.

[0027] Fig.11 yes Figure 1 Section view along line AA.

[0028] Fig.12 yes Figure 1 Cross-sectional view along line BB.

[0029]

Main component symbol description

[0030] Plug connector 100 Plug body 1

[0031] Base 11 Lingual plate 12

[0032] Upper surface 121 Key 120

[0033] Lower surface 122 Terminal slot 123

[0034] Bump 124 Plug terminal 2

[0035] Contact portion 21 Holding portion 22

[0036] Tail 23 Narrowing 24

[0037] Step portion 241 First terminal group 2a

[0038] Second terminal group 2b Third terminal group 2c

[0039] Fourth terminal group 2d differential signal terminals S1, S2, S4

[0040] Ground terminals G1, G2 Power terminals P1, P4

[0041] Plug grounding plate 3 beam portion 31

[0042] Bridge portion 32 First connection portion 33

[0043] Second connection portion 34 Third connection portion 35

[0044] Fourth connection portion 36 Fifth connection portion 37

[0045] Abutment 38 Insulation strip 4

[0046] Notch 41 Insulation block 5

[0047] Socket connector 200 Socket body 6

[0048] Side wall 61 Recessed portion 610

[0049] Channel 611 Slot 62

[0050] Slot 63 Socket terminal 7

[0051] Butt joint 71 Elastic part 711

[0052] Arc portion 712 Connecting portion 72

[0053] Mounting portion 73 Fourth terminal group 7a

[0054] Fifth terminal group 7b Sixth terminal group 7c

[0055] Seventh terminal group 7d: differential signal terminals S5, S6, S7

[0056] Ground terminals G5, G6 Power terminals P3, P7

[0057] Socket grounding plate 8 Main body 81

[0058] Opening 811 First elastic arm 82

[0059] Second elastic arm 83 arc-shaped convex parts 84, 85

[0060] Module 9 Groove 91

[0061] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. [Specific implementation method]

[0062] In order to facilitate a better understanding of the purpose, structure, characteristics and effects of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0063] See also Figure 1-4 As shown, the plug connector 100 of the present invention is docked with the socket connector 200 to transmit high-frequency signals. In this embodiment, the plug connector 100 and the socket connector 200 adopt the SFF8639 transmission interface, which is applicable to the latest generation PCIe5.0 transmission protocol, supports signal transmission rates above 32GT / s, and the transmission bandwidth can reach 128GB / s.

[0064] For ease of description, the direction of the plug connector 100 and the socket connector 200 mating is defined as the front-to-back direction. During mating, the front end of the plug connector 100 will be inserted from the rear end of the socket connector 200 to complete the mating.

[0065] See also Figure 5-7 and Figure 11-12 As shown, the plug connector 100 of the present invention comprises a plug body 1 , a plurality of plug terminals 2 arranged on the plug body 1 , a plug grounding plate 3 , an insulating strip 4 and an insulating block 5 .

[0066] The plug body 1 includes a base 11 extending in the left-right longitudinal direction and a tongue plate 12 extending forward from the base 11. The tongue plate 12 is provided with upper and lower surfaces 121 and 122 arranged opposite to each other, a tab 120 protruding upward from the upper surface 121, and a terminal slot 123 arranged on the upper and lower surfaces 121 and 122 and the tab 120. Each of the plug terminals 2 is provided with a contact portion 21 received in the terminal slot 123 and exposed on the tongue plate 12, a tail portion 23 extending outside the plug body 1, a retaining portion 22 located between the contact portion 21 and the tail portion 23 and retained on the base 11, and a narrowing portion 24 extending forward from the front end of the contact portion 21, wherein the width of the narrowing portion 24 in the left-right direction is smaller than that of the contact portion 21. The contact portion 21 and the narrowed portion 24 are accommodated in the corresponding terminal groove 123. The two sides of the narrowed portion 24 protrude outward to form a step portion 241. The two sides of the front end of the terminal groove 123 are provided with protrusions 124 that press against the corresponding step portion 241. The protrusions 124 press against the step portion 241 to better fix the narrowed portion 24 in the terminal groove 123, thereby preventing the front end of the plug terminal 2 from warping outward.

[0067] The plug terminals 2 are all in the shape of a plate and are assembled to the plug body 1 from the back to the front, and include a first terminal group 2a arranged in a row on the lower surface 122 of the tongue plate 12, a second terminal group 2b arranged on the upper surface 121 of the tongue plate 12 and located on the left side of the protruding key 120, a third terminal group 2c arranged on the upper surface 121 of the tongue plate 12 and located on the right side of the protruding key 120, and a fourth terminal group 2d arranged on the protruding key 120. The first terminal group 2a includes a plurality of pairs of differential signal terminals S1 and a plurality of ground terminals G1, and the ground terminals G1 are arranged between two adjacent pairs of differential signal terminals S1; the second terminal group 2b also includes a plurality of pairs of differential signal terminals S2 and ground terminals G2 arranged at intervals; the third terminal group 2c includes a power terminal P1 for transmitting power; and the fourth terminal group 2d includes a differential signal terminal S4 and a power terminal P4. In this embodiment, the ground terminals G1 and G2 are longer than the corresponding differential signal terminals S1 and S2, and the front ends of the ground terminals G1 and G2 protrude forward from the front ends of the corresponding differential signal terminals S1 and S2, that is, the narrowed portions 24 of the ground terminals G1 and G2 protrude forward from the narrowed portions 24 of the corresponding differential signal terminals S1 and S2. Therefore, when the plug connector 100 and the socket connector 200 are docked, the narrowed portions 24 of the ground terminals G1, G1, G2 will preferentially contact the socket terminals 7 on the socket connector 200 (to be described in detail later).

[0068] The plug grounding plate 3 is also assembled to the plug body 1 from back to front and is located between the first terminal group 2a and the second and third terminal groups 2b and 2c. The plug grounding plate 3 includes a pair of beams 31 extending in the longitudinal direction and a plurality of bridges 32 connected between the pair of beams 31. The pair of beams 31 are arranged in parallel in the front and back directions, and the bridges 32 extend in the front and back directions and are arranged in parallel in the longitudinal direction. The plug grounding plate 3 is also integrally provided with a plurality of first connecting portions 33, a second connecting portion 34 and a third connecting portion 35. The first, second and third connecting portions 33, 34 and 35 are all bent and extended downward from the corresponding beams 31, wherein the first and second connecting portions 33 and 34 are extended in opposite directions from the same beam 31, and the third connecting portion 35 is extended from another beam 31 to face the second connecting portion 34, and the second and third connecting portions 34 and 35 are located between the two beams 31 in the front and back directions. The first, second and third connecting parts 33, 34, 34 are respectively connected to different positions of each grounding terminal G1 in the corresponding first terminal group 2a. The main purpose is to eliminate the potential difference between the parts of the grounding terminal G1 as much as possible, so that the parts of the grounding terminal G1 can obtain the same grounding potential as much as possible, improve signal crosstalk, and move the resonance point of the crosstalk to high frequency, thereby improving the performance of high-frequency transmission. At the same time, the plug grounding plate 3 can achieve impedance continuity of the plug terminal through the three different positions of the first, second and third connecting parts 33, 34, 34 corresponding to the grounding terminal G1, thereby avoiding the phenomenon of impedance mutation in the circuit. Furthermore, the first connection portion 33 is connected to the narrowing portion 24 of the ground terminal G1, the second connection portion 34 is connected to the contact portion 21 of the ground terminal G1, and the third connection portion 35 is connected to the retaining portion 22 of the ground terminal G1, and the first, second and third connection portions 33, 34, 35 connected to the same ground terminal G1 extend on the same straight line along the front-to-back direction, so that the first, second and third connection portions 33, 34, 34 are connected to different parts of the corresponding ground terminal G1 as dispersedly as possible to achieve the best effect of improving high-frequency performance. The front-to-back spacing between the first and second connection portions 33, 34 connected to the same ground terminal G1 is smaller than the front-to-back spacing between the corresponding second and third connection portions 34, 35. The first, second and third connection parts 33, 34, 35 are all provided with a supporting part 38 extending in the horizontal direction and located on the same horizontal plane. The first, second and third connection parts 33, 34, 35 are downwardly supported on the narrowing part 24, the contact part 21 and the retaining part 22 of the corresponding grounding terminal G1 through the supporting part 38. When the plug connector 100 and the socket connector 200 are docked, the narrowing part 24 of the grounding terminal G1 will preferentially contact the socket terminal 7 on the socket connector 200. The first connection part 33 is supported on the narrowing part 24 to prevent the front end of the grounding terminal G1 from being deformed or moved.

[0069] The plug grounding plate 3 is also provided with a plurality of fourth connecting portions 36 and fifth connecting portions 37 that are bent upward and extended from the beam portion 31. The fourth and fifth connecting portions 36 and 37 are respectively connected to different positions of the corresponding grounding terminal G2 in the second terminal group b. Therefore, the plug grounding plate 3 can electrically connect the two rows of grounding terminals G1 and G2 together through five different connecting portions 33, 34, 35, 36, and 37 to form a closed loop, so as to further improve the overall high-frequency performance of the plug connector. The fourth and fifth connecting portions 36 and 37 respectively press upward against the lower surface of the contact portion 21 and the retaining portion 22 of the corresponding grounding terminal G2, thereby preventing the grounding terminal G2 from being deformed or moved. The width of the fourth and fifth connecting portions 36 and 37 along the longitudinal direction is smaller than that of the first, second, and third connecting portions 33, 34, and 35, and the length of the fourth and fifth connecting portions 36 and 37 along the front-to-back direction is equal to that of the first, second, and third connecting portions 33, 34, and 35.

[0070] The retaining portions 22 of the differential signal terminal S1 and the ground terminal G1 of the first terminal group 2a are both embedded and molded on the insulating strip 4. The insulating strip 4 is installed at the rear of the plug body 1. The insulating strip 4 is provided with a plurality of notches 41 facing the grounding plate 3. The third connecting portion 35 is received in the corresponding notches 41 and then passes through the notches 41 and is connected to the corresponding retaining portion 22. The notches 41 are provided to make way for the third connecting portion 35 to be connected to the retaining portion 22 of the ground terminal G1, thereby increasing the spacing between the second and third connecting portions 34 and 35, and improving the high-frequency performance of the plug connector 100.

[0071] The retaining portions 22 of the differential signal terminal S2 and the ground terminal G2 of the second terminal group 2b are both embedded and molded on the insulating block 5. The insulating block 5 is installed at the rear of the plug body 1. The grounding plate 3 is assembled to the plug body 1 from the back to the front and clamped between the insulating strip 4 and the insulating block 5, thereby forming a good limit for the grounding plate 3.

[0072] See also Figure 8-12 As shown, the socket connector 200 includes a socket body 6 , a plurality of socket terminals 7 disposed on the socket body 6 , and a socket grounding plate 8 and a module 9 assembled to the socket body 6 .

[0073] The socket body 6 includes two side walls 61 extending in the longitudinal direction and arranged opposite to each other up and down, and a longitudinal slot 62 located between the two side walls 61, and the slot 62 is used to receive the tongue plate 12 of the plug connector 100. The two side walls 61 are each provided with a plurality of channels 611 communicating with the slot 62, and the upper side wall 61 is provided with a recessed portion 610 corresponding to receiving the protruding key 120.

[0074] The socket terminals 7 are all elastic terminals and are assembled to the socket body 6 from front to back and forward to front. Each socket terminal 7 is provided with a mounting portion 73 extending outside the socket body 6, an elastic docking portion 71 opposite to the mounting portion 73, and a connecting portion 72 connecting the mounting portion 73 and the docking portion 71. The docking portion 71 is provided with an elastic portion 711 received in the corresponding channel 661 and extending obliquely upward, and an arc portion 712 protruding into the slot 62, and the arc portion 712 is used to elastically contact with the contact portion 21 of the plug terminal 2.

[0075] The socket terminal 7 includes a fourth terminal group 7a arranged in a row below the slot 62, a fifth terminal group 7b arranged above the slot 62 and on the right side of the recess 610, a sixth terminal group 7c arranged above the slot 62 and on the left side of the recess 610, and a seventh terminal group 7d arranged in the recess 610. The fourth terminal group 7a corresponds to the first terminal group 2a, and includes a plurality of pairs of differential signal terminals S5 and a plurality of ground terminals G5, wherein the ground terminals G5 are arranged between two adjacent pairs of differential signal terminals S5; the fifth terminal group 7b corresponds to the second terminal group 2b, and also includes a plurality of pairs of differential signal terminals S6 and ground terminals G6 arranged at intervals; the sixth terminal group 7c corresponds to the third terminal group 2c, and includes a power terminal P3 for transmitting power; the seventh terminal group 7d corresponds to the fourth terminal group 2d, and includes a differential signal terminal S7 and a power terminal P7. In this embodiment, the lengths of the ground terminals G5 and G6 are the same as those of the corresponding differential signal terminals S5 and S6.

[0076] The lower side wall 61 is provided with a slot 63 which is recessed from the rear end to the front and communicates with the channel 611. The socket grounding plate 8 is assembled into the slot 63 of the socket body 6 from the rear to the front, and is provided with a main body 81 received in the slot 63, a plurality of first elastic arms 82 elastically abutting against the docking portion 71 of the corresponding grounding terminal G5 in the fourth terminal group 7a, and a plurality of second elastic arms 83 elastically abutting against the connecting portion 72 of the corresponding grounding terminal G5 in the fourth terminal group 7a. Similarly, the first elastic arm 82 and the second elastic arm 83 of the socket grounding plate 8 are respectively supported on the docking portion 71 and the connecting portion 72 of the grounding terminal G5. The main purpose is to eliminate the potential difference between the various parts of the grounding terminal G5 as much as possible, so that the various parts of the grounding terminal G5 can obtain the same grounding potential as much as possible, improve signal crosstalk, and move the resonance point of the crosstalk to high frequency, thereby improving the performance of high-frequency transmission. At the same time, the socket grounding plate 8 can achieve impedance continuity of the socket terminal 7 through the two different positions of the first and second elastic arms 82 and 83 corresponding to the grounding terminal G1, thereby avoiding the phenomenon of impedance mutation in the circuit.

[0077] The first elastic arm 82 is accommodated in the corresponding channel 611 and abuts against the elastic portion 711 of the corresponding grounding terminal G5. When the plug connector 100 and the socket connector 200 are docked, the narrowed portion 24 of the grounding terminal G1 will preferentially be crimped with the arc-shaped portion 712 of the grounding terminal G5 on the socket connector 200. The first elastic arm 82 abuts against the elastic portion 711 to increase the structural strength of the elastic portion 711 and thereby prevent the front end of the grounding terminal G5 from being excessively deformed.

[0078] In this embodiment, the first elastic arm 82 is formed by integrally stamping upward and extending backward from the main body 81, and the second elastic arm 83 is formed by integrally extending forward from the front end of the main body 81. The first elastic arm 82 and the second elastic arm 83 are respectively bent and protruded upward to form arc-shaped protrusions 84 and 85, thereby realizing elastic support of the docking portion 71 and the connecting portion 72 of the corresponding grounding terminal G5, and because the elastic portion 711 extends upwardly and obliquely, the arc-shaped protrusion 84 of the first elastic arm 82 protrudes in the vertical direction at a height higher than the arc-shaped protrusion 85 of the second elastic arm 83, thereby forming a good support effect on the elastic portion 711. The first elastic arm 82 is L-shaped, thereby shortening the straight-line distance from the connection between the elastic arm 82 and the main body 81 to the arc-shaped protrusion 84, thereby reducing the force arm length of the elastic arm 82 and improving the elastic deformation ability of the elastic arm 82. The main body 81 of the socket grounding plate 8 extends backward beyond the docking portion 71 to enhance the anti-interference effect of the socket grounding plate 8 on external signals, and the rear end of the main body 81 is provided with a plurality of openings 811 for accommodating arc portions 712 corresponding to the differential signal terminals S5 and the grounding terminals G5. Therefore, when the differential signal terminals S5 and the grounding terminals G5 are docked with the plug connector 100, the arc portions 712 will not contact the socket grounding plate 8 after being deformed.

[0079] The connecting portion 72 of the differential signal terminal S5 and the ground terminal G5 are embedded and molded on the module 9. The module 9 is assembled to the rear of the socket body 6 and is provided with a plurality of grooves 91 exposing the corresponding connecting portion 72 of the ground terminal G5. The second elastic arm 83 passes through the corresponding groove 91 and then abuts against the corresponding connecting portion 72. Therefore, the setting of the groove 91 can allow the second elastic arm 83 to abut against the connecting portion 72 of the ground terminal G5 to make way, thereby increasing the distance between the first and second elastic arms 82 and 83, and better improving the high-frequency performance of the socket connector 200.

[0080] The plug connector of the present invention has the following beneficial effects:

[0081] (1) The plug grounding plate 3 of the present invention is provided with three connection parts, namely, the first, second and third connection parts 33, 34, 34 are respectively connected to different positions of each grounding terminal G1, thereby improving signal crosstalk and improving the performance of high-frequency transmission. At the same time, the impedance continuity of the plug terminal 2 is achieved to avoid the impedance mutation phenomenon in the circuit. After improvement, the plug connector 100 of the present invention can support a signal transmission rate of more than 32GT / s.

[0082] (2) The present invention achieves the best effect of improving high-frequency performance by connecting the first connection portion 33 of the plug grounding plate 3 to the narrowed portion 24, the second connection portion 34 to the contact portion 21, and the third connection portion 35 to the retaining portion 22. The three connection portions are connected to different parts of the corresponding grounding terminal G1 as dispersedly as possible. At the same time, the first connection portion 33 is abutted against the narrowed portion 24 to prevent the front end of the grounding terminal G1 from being deformed or moved.

[0083] (3) The insulating strip 4 of the present invention is provided with a plurality of notches 41 facing the grounding plate 3. The third connecting portion 35 is received in the corresponding notches 41 and then passes through the notches 41 and is connected to the corresponding retaining portion 22. The notches 41 are provided to make way for the third connecting portion 35 to be connected to the retaining portion 22 of the grounding terminal G1, thereby increasing the spacing between the second and third connecting portions 34 and 35, and improving the high frequency performance of the plug connector 100.

[0084] (4) The plug grounding plate 3 of the present invention can electrically connect the two rows of grounding terminals G1 and G2 together through five different connecting parts 33, 34, 35, 36, and 37 to form a closed loop, so as to further improve the overall high-frequency performance of the plug connector.

[0085] The above are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention. That is, all simple equivalent changes and modifications made according to the claims and the contents of the present invention should still fall within the scope of the present invention.

Claims

1. A plug connector, comprising a plug body, a plurality of plug terminals arranged on the plug body, and a plug grounding plate, wherein the plug terminals include a plurality of pairs of differential signal terminals and a plurality of grounding terminals arranged in a row, wherein the grounding terminals are arranged between two adjacent pairs of differential signal terminals at intervals, Features: The plug grounding plate is integrally provided with a plurality of first connecting parts, a second connecting part and a third connecting part, and each of the grounding terminals is respectively connected with the first, second and third connecting parts at different positions thereof, and the plug body comprises a base extending in the longitudinal direction and a tongue extending forward from the base; each of the plug terminals is provided with a contact part exposed on the tongue, a tail extending outside the plug body, a retaining part located between the contact part and the tail and retained at the base, and a narrowing part extending forward from the front end of the contact part, wherein the width of the narrowing part is smaller than that of the contact part; the first connecting part is connected to the narrowing part of the grounding terminal, the second connecting part is connected to the contact part of the grounding terminal, and the third connecting part is connected to the retaining part of the grounding terminal.

2. The plug connector according to claim 1, Features: The tongue plate is recessed with a plurality of terminal grooves, the contact portion and the narrowed portion are accommodated in the corresponding terminal grooves, steps are provided on both sides of the narrowed portion, and protrusions are provided on both sides of the front end of the terminal groove to press against the corresponding steps.

3. The plug connector according to claim 1, Features: The plug connector also includes an insulating strip assembled on the base of the plug body, the retaining portions of the differential signal terminals and the grounding terminals are embedded in the insulating strip, the insulating strip is provided with a plurality of notches facing the grounding plate, and the third connecting portion is accommodated in the corresponding notches.

4. The plug connector according to claim 1, Features: The grounding plate includes a pair of beams extending in the longitudinal direction and a plurality of bridging portions connected between the pair of beams, the first and second connecting portions are formed by extending in opposite directions from the same beam, the third connecting portion is formed by extending from another beam towards the second connecting portion, and the second and third connecting portions are located between the two beams in the front-to-back direction, and the first, second and third connecting portions connected to the same grounding terminal extend on the same straight line in the front-to-back direction.

5. The plug connector according to claim 4, Features: The distance between the front and rear of the first and second connecting parts connected to the same ground terminal is smaller than the distance between the front and rear of the corresponding second and third connecting parts.

6. A plug connector, comprising a plug body, a plurality of plug terminals arranged on the plug body, and a plug grounding plate assembled on the plug body; the plug body comprises a base extending in a longitudinal direction and a tongue extending forward from the base; the plug terminals comprise a plurality of pairs of differential signal terminals and a plurality of grounding terminals arranged on a lower surface of the tongue and arranged in a row, the grounding terminals being arranged at intervals between two adjacent pairs of differential signal terminals, Features: The plug connector is configured to support a signal transmission rate of more than 32GT / s. The plug grounding plate is integrally provided with at least three downwardly bent and extended connection parts corresponding to each grounding terminal, which are respectively connected to different positions of the corresponding grounding terminals. Each plug terminal is provided with a contact part exposed on the tongue plate, a tail part extending outside the plug body, a retaining part located between the contact part and the tail part and retained at the base, and a narrowing part extending forward from the front end of the contact part, wherein the width of the narrowing part is smaller than that of the contact part. The three connection parts are respectively pressed downward against the upper surfaces of the narrowing part, the contact part and the retaining part of the corresponding grounding terminal.

7. The plug connector according to claim 6, Features: The plug terminal includes a plurality of pairs of differential signal terminals and ground terminals which are arranged on the upper surface of the tongue plate and arranged in another row. The plug grounding plate is integrally provided with at least two upwardly bent and extended connection parts corresponding to each grounding terminal in the other row, respectively connected to different positions of the corresponding grounding terminals; the at least two connection parts respectively abut upward against the lower surface of the contact part and the retaining part of the corresponding grounding terminal in the other row, the width of the upwardly bent and extended connection part along the longitudinal direction is smaller than that of the downwardly bent and extended connection part, and the length of the upwardly bent and extended connection part along the front-to-back direction is equal to that of the downwardly bent and extended connection part.

8. The plug connector according to claim 7, Features: The plug connector also includes an insulating strip and an insulating block assembled to the base of the plug body from back to front, the retaining portions of the one row of differential signal terminals and the grounding terminals are embedded in the insulating strip, the retaining portions of the other row of differential signal terminals and the grounding terminals are embedded in the insulating block, and the grounding sheet is assembled to the plug body from back to front and clamped between the insulating strip and the insulating block.

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