Terminal set and high frequency connector

Abstract

This utility model discloses a terminal group and a high-frequency connector. The terminal group includes an upper row of terminals and a lower row of terminals. The upper row of terminals includes a first differential pair terminal, a second ground terminal, a third differential pair terminal, and a fourth ground terminal. The lower row of terminals includes a first ground terminal, a second differential pair terminal, a third ground terminal, and a fourth differential pair terminal. Each of the first to fourth ground terminals has a first isolation portion that is laterally widened. The height of the first isolation portion is located between the upper row of differential pair terminals and the lower row of differential pair terminals to isolate the upper row of differential pair terminals and the lower row of differential pair terminals, thereby reducing crosstalk between the upper row of differential pair terminals and the lower row of differential pair terminals, especially crosstalk between adjacent differential pair terminals in the upper and lower rows. Furthermore, at least the second ground terminal and the third ground terminal also have a second isolation portion to isolate adjacent differential pair terminals in the same row of the corresponding upper row of differential pair terminals and lower row of differential pair terminals, thereby reducing crosstalk between adjacent differential pair terminals in the same row.

Description

Technical Field

[0001] The utility model relates to the technology of connector field, in particular to a terminal group and a high-frequency connector. Background Art

[0002] As one of the mainstream audio and video transmission interfaces, DisplayPort (DP) defines a maximum test frequency of 10GHz in the DP2.0 specification. After upgrading to the DP2.1 version, in order to improve compatibility with the TYPE-C connector, the test frequency is increased to 20GHz, and the same integrated crosstalk (ITX) project as TYPE-C is added. This project is a collection of crosstalk between one differential pair and the other three differential pairs. Compared with DP2.0, the product's requirements for crosstalk are greatly increased.

[0003] In order to optimize the performance of ITX, the existing DP2.1 female connector on the market adds a middle spacer between the upper and lower rows of terminals. Due to the limitation of the molding process, the production process of the product after adding the middle spacer is: firstly, the upper and lower rows of terminals are injection molded separately, and then assembled with the middle spacer, and then the assembly is injection molded again. This process flow is relatively complicated, the production cost is high, and it is not conducive to the promotion of the product. For example, CN 116207582 A discloses a manufacturing process for an electrical connector, comprising the following steps: S1, the components of the electrical connector include an upper row of terminals, an upper semi-insulator, a prepared lower row of terminals, a lower semi-insulator, a grounding plate (also referred to as a middle spacer) and a shell; S2, assembling the upper row of terminals and the upper semi-insulator to obtain an upper semi-finished product; S3, assembling the lower row of terminals and the lower semi-insulator to obtain a lower semi-finished product; S4, removing the head material strips from the obtained upper semi-finished product and the obtained lower semi-finished product; S5, assembling the lower semi-finished product after step S4 with the grounding plate; S6, assembling the lower semi-finished product after step S5 with the upper semi-finished product after step S4 to obtain an assembled semi-finished product.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. Utility Model Content

[0005] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide a terminal group and a high-frequency connector, which cleverly designs the structure of the grounding terminal, uses the grounding terminal to reduce the crosstalk between the upper row of differential pair terminals and the lower row of differential pair terminals, and at the same time reduces the crosstalk between adjacent differential pair terminals in the same row, and is easy to produce.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A terminal group includes an upper row of terminals and a lower row of terminals; the upper row of terminals includes a first differential pair terminal, a second grounding terminal, a third differential pair terminal and a fourth grounding terminal which are sequentially arranged side by side on the left and right sides; the lower row of terminals includes a first grounding terminal, a second differential pair terminal, a third grounding terminal and a fourth differential pair terminal which are sequentially arranged side by side on the left and right sides; the first differential pair terminal and the third differential pair terminal are upper row differential pair terminals, and the second differential pair terminal and the fourth differential pair terminal are lower row differential pair terminals;

[0008] The first grounding terminal, the second grounding terminal, the third grounding terminal and the fourth grounding terminal all have a first isolation portion that is laterally widened, and the height of the first isolation portion is located between the upper row of differential pair terminals and the lower row of differential pair terminals to isolate the upper row of differential pair terminals from the lower row of differential pair terminals; and at least the second grounding terminal and the third grounding terminal also have a second isolation portion to isolate the corresponding upper row of differential pair terminals and adjacent differential pair terminals in the same row of the upper row of differential pair terminals.

[0009] As a preferred embodiment, the second isolation portion of the second grounding terminal is flush with the first differential pair terminal and the third differential pair terminal in the left-right direction, and the second isolation portion of the third grounding terminal is flush with the second differential pair terminal and the fourth differential pair terminal in the left-right direction.

[0010] As a preferred embodiment, the first grounding terminal, the second grounding terminal, the third grounding terminal, the fourth grounding terminal, the first differential pair terminal, the second differential pair terminal, the third differential pair terminal, and the fourth differential pair terminal all include a contact portion, a fixing portion, and a welding portion connected in sequence from front to back; the first isolation portion is bent from the rear end of the contact portion toward the corresponding upper row terminal or the lower row terminal on the opposite side.

[0011] As a preferred embodiment, the second isolation portion of the second grounding terminal is flush with the fixed portions of the first differential pair terminal and the third differential pair terminal in the left-right direction, and the second isolation portion of the third grounding terminal is flush with the fixed portions of the second differential pair terminal and the fourth differential pair terminal in the left-right direction.

[0012] As a preferred solution, the projection area of ​​the first isolation portion in the up-down direction covers the projection area of ​​the corresponding differential pair terminal in the up-down direction.

[0013] As a preferred solution, the outermost left-right width of the first isolation portion is greater than the outermost left-right width of the corresponding differential pair terminal.

[0014] As a preferred solution, on the second grounding terminal and the third grounding terminal, their respective first isolation parts are respectively located on the left and right sides of the second isolation part and form left and right side gaps, and the front and rear ends of the second isolation part and the corresponding first isolation parts on the left and right sides are respectively integrally connected to the rear end of the contact part and the front end of the welding part.

[0015] A high-frequency connector comprises a terminal group, an insulating seat injection-molded on the terminal group, and a metal shell covering the outside of the insulating seat, wherein the insulating seat has a tongue plate extending forward, and the metal shell forms an insertion interface around the periphery of the tongue plate; the terminal group is a terminal group as described in any of the preceding items, and the terminal group extends forward to the upper and lower sides of the tongue plate.

[0016] As a preferred solution, the front ends of the first differential pair terminals, the second differential pair terminals, the third differential pair terminals, and the fourth differential pair terminals are all located behind the front end of the tongue plate to maintain a front-to-back spacing; and, a first groove is provided at the bottom of the tongue plate corresponding to the front ends of the first differential pair terminals and the third differential pair terminals, and the front end pre-broken parts of the first differential pair terminals and the third differential pair terminals are located in the first groove; a second groove is provided at the top of the tongue plate corresponding to the front ends of the second differential pair terminals and the fourth differential pair terminals, and the front end pre-broken parts of the second differential pair terminals and the fourth differential pair terminals are located in the second groove.

[0017] As a preferred solution, the front end heads of the same differential pair terminals are arranged close to each other, and the adjacent terminal heads of adjacent differential pair terminals are arranged away from each other, so as to increase the distance between the adjacent terminal heads of adjacent differential pair terminals;

[0018] And / or: the left and right sides of the front ends of the contact parts of the upper row terminals and the lower row terminals are chamfered near the front end heads.

[0019] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that it is mainly achieved by cleverly designing the structure of the grounding terminal, and the first grounding terminal, the second grounding terminal, the third grounding terminal and the fourth grounding terminal all have a first isolation portion that is laterally widened, and the first isolation portion is used to isolate the upper row of differential pair terminals and the lower row of differential pair terminals, thereby reducing the crosstalk between the upper row of differential pair terminals and the lower row of differential pair terminals. In addition, at least the second grounding terminal and the third grounding terminal also have a second isolation portion, and the second isolation portion is used to isolate the corresponding upper row of differential pair terminals and adjacent differential pair terminals in the same row of the upper row of differential pair terminals, thereby reducing the crosstalk between adjacent differential pair terminals in the same row. This structure effectively ensures the anti-crosstalk effect, and eliminates the need for an additional middle partition sheet that is required in traditional technology, and is suitable for one-time injection molding of the upper and lower row terminals, which simplifies the process flow, reduces production costs, and is not conducive to product promotion.

[0020] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of a high-frequency connector according to an embodiment of the utility model;

[0022] Figure 2 is an exploded view of a high-frequency connector according to an embodiment of the utility model;

[0023] Figure 3 It is a three-dimensional diagram of a terminal group according to an embodiment of the utility model;

[0024] Figure 4 is another perspective view of the terminal assembly of the embodiment of the utility model;

[0025] Figure 5 is an exploded view of a terminal assembly according to an embodiment of the present utility model;

[0026] Figure 6 yes Figure 3 Middle A-direction view;

[0027] Figure 7 is another exploded view of the terminal assembly of the embodiment of the utility model;

[0028] Figure 8 is a three-dimensional diagram of a second grounding terminal of an embodiment of the utility model;

[0029] Fig. 9 is another perspective view of the second grounding terminal of the embodiment of the utility model;

[0030] Fig.10 is a three-dimensional diagram of a first grounding terminal according to an embodiment of the utility model;

[0031] Fig.11 is another perspective view of the first grounding terminal of the embodiment of the utility model;

[0032] Fig.12 It is a partial three-dimensional diagram of the terminal group and the insulating seat after being injection-molded into one piece according to the embodiment of the utility model;

[0033] Fig. 12A It is a partial cross-sectional view of the terminal group and the insulating seat after being integrally molded into one piece according to the embodiment of the utility model;

[0034] Fig.13 It is another partial three-dimensional diagram of the terminal group and the insulating seat after being injection-molded into one piece according to the embodiment of the utility model;

[0035] Fig.14 yes Figure 3 The cross-section diagram at BB in the middle;

[0036] Fig.15 This is a test diagram of a differential crosstalk simulation experiment performed on a high-frequency connector according to an embodiment of the utility model;

[0037] Fig.16 This is a summary table of simulation test results of the high-frequency connector of the embodiment of the utility model. DETAILED DESCRIPTION

[0038] Please refer to Figures 1 to 16 As shown, it shows the specific structure of an embodiment of the utility model.

[0039] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0040] A high-frequency connector, mainly refers to a DP2.1 female connector. When implementing the present invention, it is not limited to the DP2.1 female connector, and can also be other high-frequency connectors. Taking the DP2.1 female connector as an example, it includes a terminal group 10, an insulating seat 20 injection-molded on the terminal group 10, and a metal shell 30 wrapped around the outside of the insulating seat 20, and a rubber plug 40 is also provided at the bottom of the insulating seat 20. The insulating seat 20 has a tongue plate extending forward, and the metal shell 30 forms an insertion interface around the periphery of the tongue plate; the terminal group 10 extends forward to the upper and lower sides of the tongue plate.

[0041] For the DP2.1 female connector, its terminal group 10 includes an upper row of terminals 1 and a lower row of terminals 2. Specifically, the upper row of terminals are from left to right: a first differential pair terminal 101 (referring to DIFF1), a second grounding terminal 102, a third differential pair terminal 103 (referring to DIFF5), a fourth grounding terminal 104, a CONFIG terminal, an I / O terminal, an I / O terminal, and a RIN terminal; the lower row of terminals are from left to right: a first grounding terminal 105, a second differential pair terminal 106 (referring to DIFF3), a third grounding terminal 107, a fourth differential pair terminal 108 (referring to DIFF7), a CONFIG terminal, a fifth grounding terminal, an In terminal, and a PWR Out terminal; usually, the terminal definition is based on the association specifications, and some terminals may be added or reduced as needed.

[0042] All terminals of the upper row of terminals and the lower row of terminals include a contact portion 13, a fixing portion 14 and a welding portion 15 connected in sequence from front to back; the contact portion is an overall front-to-back horizontally extending structure, and the fixing portion is an L-shaped structure, which has a longitudinal portion extending horizontally front to back and a vertical portion extending vertically, the front end of the longitudinal portion is integrally connected to the rear end of the contact portion, the upper end of the vertical portion is integrally connected to the rear end of the longitudinal portion, and the welding portion is connected to the lower end of the vertical portion, and the welding portions of the upper row of terminals and the lower row of terminals are located in the same plane. During production, the upper row of terminals and the lower row of terminals are injection molded at one time, so that the terminal group 10 is fixed in the insulating seat 20, and the contact portions of the upper row of terminals and the lower row of terminals are exposed at the upper and lower sides of the tongue plate respectively, and the welding portions are exposed at the tail end of the insulating seat 20.

[0043] like Fig.12 , Fig. 12A as well as Fig.13As shown, the front ends of the first differential pair terminals 101, the second differential pair terminals 106, the third differential pair terminals 103, and the fourth differential pair terminals 108 are all located behind the front end of the tongue plate to maintain the front-to-back spacing; and, a first groove 17 is provided at the bottom of the tongue plate corresponding to the front ends of the first differential pair terminals 101 and the third differential pair terminals 103, and the front end pre-breakage points of the first differential pair terminals 101 and the third differential pair terminals 103 are located in the first groove 17; a second groove 18 is provided at the top of the tongue plate corresponding to the front ends of the second differential pair terminals 106 and the fourth differential pair terminals 108, and the front end pre-breakage points of the second differential pair terminals 106 and the fourth differential pair terminals 108 are located in the second groove 18. That is, the left and right sides of the head ends of the first grounding terminal 105 and the third grounding terminal 107 are respectively provided with first grooves 17, and the left and right sides of the head ends of the second grounding terminal 102 and the fourth grounding terminal 104 are respectively provided with second grooves 18. The first differential pair terminal 101, the second differential pair terminal 106, the third differential pair terminal 103, and the fourth differential pair terminal 108 are all cut and cut on the opposite sides. Here, by shrinking the front end pre-break of the differential pair terminal to shorten the open branch area, the loss and crosstalk problems of high-frequency signals are greatly improved. Moreover, compared with the design scheme of setting the front pre-break groove in front of the same side of the differential terminal in the traditional technology, the grooves staggered up and down are adopted, so that the front side of the contact part of the differential pair terminal on the tongue plate is a plane. These grooves avoid contact with the spring terminal of the DP male connector, eliminating the risk of the spring terminal of the DP male connector being stuck when the grooves are on the same side (or the same row) in the traditional technology.

[0044] In addition, the front end heads of the same differential pair terminals are arranged close together, and the adjacent terminal heads of adjacent differential pair terminals are arranged away from (or far away from) each other to increase the distance between the adjacent terminal heads of adjacent differential pair terminals, reduce the mutual influence of the terminal heads as resonant transmitters and receivers, and thus reduce crosstalk; the right lower edge of the right terminal of the first differential pair terminal, the left upper edge of the left terminal of the second differential pair terminal, the right upper edge of the right terminal of the second differential pair terminal, the left lower edge of the left terminal of the third differential pair terminal, the right lower edge of the right terminal of the third differential pair terminal, and the left upper edge of the left terminal of the fourth differential pair terminal are all chamfered to form a chamfered slope 16 or a chamfered arc surface to reduce the distribution of electromagnetic field lines on adjacent differential pair terminals, thereby reducing crosstalk.

[0045] Next, the structure of the terminal group 10 is described in detail. The terminal group 10 includes an upper row of terminals and a lower row of terminals. The upper row of terminals includes a first differential pair terminal 101, a second grounding terminal 102, a third differential pair terminal 103, and a fourth grounding terminal 104 arranged side by side in sequence, and the lower row of terminals includes a first grounding terminal 105, a second differential pair terminal 106, a third grounding terminal 107, and a fourth differential pair terminal 108 arranged side by side in sequence. The first differential pair terminal 101 and the third differential pair terminal are the upper row of differential pair terminals, and the second differential pair terminal 106 and the fourth differential pair terminal are the lower row of differential pair terminals.

[0046] The first grounding terminal 105, the second grounding terminal 102, the third grounding terminal 107 and the fourth grounding terminal 104 all have a first isolation portion 11 that is laterally widened, and the height of the first isolation portion 11 is located between the upper row of differential pair terminals and the lower row of differential pair terminals to isolate the upper row of differential pair terminals and the lower row of differential pair terminals, thereby reducing the crosstalk between the upper row of differential pair terminals and the lower row of differential pair terminals, especially the crosstalk between the upper and lower rows of adjacent differential pair terminals; the projection area of ​​the first isolation portion 11 in the up and down directions covers the projection area of ​​the corresponding differential pair terminals in the up and down directions, and the two first isolation portions 11 are The outermost left and right width is greater than the outermost left and right width of the corresponding differential pair terminal, that is, the outermost left and right width of the first isolation portion 11 of the first grounding terminal 105 is greater than the outermost left and right width of the first differential pair terminal 101, the outermost left and right width of the first isolation portion 11 of the second grounding terminal 102 is greater than the outermost left and right width of the second differential pair terminal 106, the outermost left and right width of the first isolation portion 11 of the third grounding terminal 107 is greater than the outermost left and right width of the third differential pair terminal 103, and the outermost left and right width of the first isolation portion 11 of the fourth grounding terminal 104 is greater than the outermost left and right width of the fourth differential pair terminal 108. And the projection areas of the first isolation portions 11 of the first grounding terminal 105, the second grounding terminal 102, the third grounding terminal 107 and the fourth grounding terminal 104 are adjacently stacked (referring to the projection areas in the up and down directions), effectively reducing the crosstalk between the upper row of differential pair terminals and the lower row of differential pair terminals.

[0047] At least the second grounding terminal 102 and the third grounding terminal 107 also have a second isolation portion 12 to isolate the upper row of differential pair terminals and adjacent differential pair terminals in the same row of the upper row of differential pair terminals; that is, the second isolation portion 12 of the second grounding terminal 102 is located between the first differential pair terminal 101 and the third differential pair terminal, and the second isolation portion 12 of the third grounding terminal 107 is located between the second differential pair terminal 106 and the fourth branch pair terminal, so as to reduce crosstalk between adjacent differential pair terminals in the same row. The second isolation portion 12 of the second grounding terminal 102 is arranged flush with the first differential pair terminal 101 and the third differential pair terminal in the left-right direction, and the second isolation portion 12 of the third grounding terminal 107 is arranged flush with the second differential pair terminal 106 and the fourth branch pair terminal in the left-right direction. The first grounding terminal 105, the second grounding terminal 102, the third grounding terminal 107, the fourth grounding terminal 104, the first differential pair terminal 101, the second differential pair terminal 106, the third differential pair terminal 103, and the fourth differential pair terminal 108 all include a contact portion, a fixing portion, and a welding portion that are sequentially connected from front to back; the first isolation portion 11 is bent from the rear end of the contact portion of the terminal toward the corresponding upper row terminal or the lower row terminal on the opposite side, that is: the first isolation portion 11 of the second grounding terminal 102 and the fourth grounding terminal 104 is bent toward the lower row terminal, and the first isolation portion 11 of the first grounding terminal 105 and the third grounding terminal 107 is bent toward the upper row terminal, which is equivalent to the first isolation portion 11 having deviated from the height of the contact portion of the terminal where it is located, and is approaching the area between the upper row differential pair terminal and the lower row differential pair terminal. The contact parts of the upper row are all located at a set height, and the contact parts of the lower row are all located at another set height; the second isolation part 12 of the second grounding terminal 102 is flush with the fixed parts of the first differential pair terminal 101 and the third differential pair terminal 103 in the left-right direction, and the second isolation part 12 of the third grounding terminal 107 is flush with the fixed parts of the second differential pair terminal 106 and the fourth differential pair terminal 108 in the left-right direction, so that the differential pairs in the same row are well isolated. The first isolation part 11 is flush with the fixed parts of the corresponding first differential pair terminal 101, the second differential pair terminal, the third differential pair terminal 103, and the fourth differential pair terminal 108 in the up-down direction.In the present embodiment, the first isolation portion 11 and the second isolation portion 12 of the first grounding terminal 105, the second grounding terminal 102, the third grounding terminal 107 and the fourth grounding terminal 104 adopt a structure divided into two in the longitudinal portion and the vertical portion. Therefore, "upper and lower row isolation" and "isolation of adjacent differential pair terminals in the same row" are formed with the corresponding differential pair terminals in the longitudinal portion and the vertical portion.

[0048] In this embodiment, the first isolating portions 11 of the second grounding terminal 102 and the third grounding terminal 107 are respectively located on the left and right sides of the second isolating portions 12 and form left and right side gaps, which are usually formed by punching or puncturing. The front and rear ends of the second isolating portion 12 and the corresponding first isolating portions 11 on the left and right sides are respectively connected to the rear end of the contact portion and the front end of the welding portion. In actual production, the first grounding terminal 105, the second grounding terminal 102, the third grounding terminal 107 and the fourth grounding terminal 104 are designed to have the same structure for easy production. Fig.10 As shown, it can be seen that for the second grounding terminal 102 and the fourth grounding terminal 104 in the upper row, the height of the first isolation part 11 is lower than the height of the second isolation part 12, and for the first grounding terminal 105 and the third grounding terminal 107 in the lower row, the height of the first isolation part 11 is higher than the height of the second isolation part 12; the left and right outermost sides of the first isolation part 11 both exceed the left and right outermost sides of the corresponding differential pair terminals. Although there is a height difference between the first isolation part 11 in the upper row and the first isolation part 11 in the lower row, the projection areas of the first isolation parts 11 of the first grounding terminal 105, the second grounding terminal 102, the third grounding terminal 107 and the fourth grounding terminal 104 are adjacently stacked (referring to the projection area in the up and down direction), and the first isolation part 11 can be used to achieve the effect of a whole-piece middle separator. In addition, a positioning groove 111 is provided on the first isolation part 11, and the positioning groove 111 passes through the upper and lower ends of the first isolation part 11. By cleverly designing the structure of the grounding terminal, the terminal structure has better strength and improved deformation resistance, which is beneficial to the positioning and position retention of the entire terminal group 10 during injection molding, and the combination of the terminal group 10 and the insulating seat 20 is more stable.

[0049] like Fig.15 and Fig.16 As shown, simulation tests show that it can meet the anti-crosstalk requirements of the DP2.1 connector, and the measured data of ITX is better than the standard parameter of -34 of the DP2.1 connector.

[0050] The design focus of the utility model is that it is mainly through the ingenious design of the structure of the grounding terminal, the first grounding terminal 105, the second grounding terminal 102, the third grounding terminal 107 and the fourth grounding terminal 104 all have a first isolation portion 11 that is laterally widened, and the first isolation portion 11 is used to isolate the upper row of differential pair terminals and the lower row of differential pair terminals, thereby reducing the crosstalk between the upper row of differential pair terminals and the lower row of differential pair terminals, and at least the second grounding terminal 102 and the third grounding terminal 107 also have a second isolation portion 12, and the second isolation portion 12 is used to isolate the corresponding upper row of differential pair terminals and the adjacent differential pair terminals in the same row of the upper row of differential pair terminals, thereby reducing the crosstalk between the adjacent differential pair terminals in the same row; this structure effectively ensures the anti-crosstalk effect, and eliminates the need for an additional middle partition sheet in the traditional technology, is suitable for one-time injection molding of the upper and lower row terminals, simplifies the process flow, can reduce production costs, and is not conducive to product promotion.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A terminal group, comprising an upper row of terminals and a lower row of terminals; the upper row of terminals comprises a first differential pair terminal, a second grounding terminal, a third differential pair terminal and a fourth grounding terminal arranged side by side in sequence, and the lower row of terminals comprises a first grounding terminal, a second differential pair terminal, a third grounding terminal and a fourth differential pair terminal arranged side by side in sequence; the first differential pair terminal and the third differential pair terminal are upper row differential pair terminals, and the second differential pair terminal and the fourth differential pair terminal are lower row differential pair terminals; characterized in that: The first grounding terminal, the second grounding terminal, the third grounding terminal and the fourth grounding terminal all have a first isolation portion that is laterally widened, and the height of the first isolation portion is located between the upper row of differential pair terminals and the lower row of differential pair terminals to isolate the upper row of differential pair terminals from the lower row of differential pair terminals; and at least the second grounding terminal and the third grounding terminal also have a second isolation portion to isolate the corresponding upper row of differential pair terminals and adjacent differential pair terminals in the same row of the upper row of differential pair terminals.

2. A terminal assembly according to claim 1, characterized in that: The second isolation portion of the second grounding terminal is flush with the first differential pair terminal and the third sub-pair terminal in the left-right direction, and the second isolation portion of the third grounding terminal is flush with the second differential pair terminal and the fourth sub-pair terminal in the left-right direction.

3. A terminal assembly according to claim 2, characterized in that: The first grounding terminal, the second grounding terminal, the third grounding terminal, the fourth grounding terminal, the first differential pair terminal, the second differential pair terminal, the third differential pair terminal, and the fourth differential pair terminal all include a contact portion, a fixing portion, and a welding portion that are sequentially connected from front to back; the first isolation portion is bent from the rear end of the contact portion toward the corresponding upper row terminal or the lower row terminal on the opposite side.

4. A terminal assembly according to claim 3, characterized in that: The second isolation portion of the second grounding terminal is flush with the fixed portions of the first differential pair terminal and the third differential pair terminal in the left-right direction, and the second isolation portion of the third grounding terminal is flush with the fixed portions of the second differential pair terminal and the fourth differential pair terminal in the left-right direction.

5. A terminal assembly according to claim 3, characterized in that: The projection area of ​​the first isolation portion in the up-down direction covers the projection area of ​​the corresponding differential pair terminal in the up-down direction.

6. A terminal assembly according to claim 5, characterized in that: The outermost left-right width of the first isolation portion is greater than the outermost left-right width of the corresponding differential pair terminal.

7. A terminal assembly according to claim 5, characterized in that: On the second grounding terminal and the third grounding terminal, their respective first isolation parts are respectively located on the left and right sides of the second isolation part and form left and right side gaps, and the front and rear ends of the second isolation part and the corresponding first isolation parts on the left and right sides are respectively integrally connected to the rear end of the contact part and the front end of the welding part.

8. A high frequency connector, characterized in that: It includes a terminal group, an insulating seat injection-molded on the terminal group, and a metal shell covering the outside of the insulating seat, the insulating seat has a tongue plate extending forward, and the metal shell forms an insertion interface around the outer periphery of the tongue plate; the terminal group is a terminal group described in any one of claims 1 to 7, and the terminal group extends forward to the upper and lower sides of the tongue plate.

9. The high frequency connector according to claim 8, characterized in that: The front ends of the first differential pair terminals, the second differential pair terminals, the third differential pair terminals, and the fourth differential pair terminals are all located behind the front end of the tongue plate to maintain a front-to-back spacing; and a first groove is provided at the bottom of the tongue plate corresponding to the front ends of the first differential pair terminals and the third differential pair terminals, and the front end pre-broken parts of the first differential pair terminals and the third differential pair terminals are located in the first groove; a second groove is provided at the top of the tongue plate corresponding to the front ends of the second differential pair terminals and the fourth differential pair terminals, and the front end pre-broken parts of the second differential pair terminals and the fourth differential pair terminals are located in the second groove.

10. The high frequency connector according to claim 8 or 9, characterized in that: The front end heads of the same differential pair terminals are arranged close to each other, and the adjacent terminal heads of adjacent differential pair terminals are arranged away from each other, so as to increase the distance between the adjacent terminal heads of adjacent differential pair terminals; And / or: the left and right sides of the front ends of the contact parts of the upper row terminals and the lower row terminals are chamfered near the front end heads.

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