Wire end connector and connector assembly

Abstract

The utility model provides a wire end connector and a connector assembly, and relates to the technical field of connectors, the wire end connector comprises an insulating main body, the insulating main body is internally provided with an accommodating cavity, the accommodating cavity is internally provided with a plurality of rows of first terminal groups, and each row of first terminal group is electrically connected with a cable group; the first grounding piece and the second grounding piece are respectively arranged at two sides of each row of first terminal group, and the first grounding piece and the second grounding piece are electrically connected with the grounding terminals in the first terminal group; the problem that the anti-crosstalk capability of a connector in the prior art is insufficient is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and more specifically, relates to a line end connector and a connector assembly. Background Art

[0002] At present, as the signal transmission requirements of connectors increase, the requirements for the crosstalk index of connectors also become higher, and it becomes more and more important to improve the anti-crosstalk performance of connectors. Each row of terminal groups in the connector includes multiple ground terminals and multiple signal terminals, and there is at least one signal terminal between two adjacent ground terminals. For such connectors, how to reduce the crosstalk of signals is an urgent problem to be solved. Utility Model Content

[0003] The purpose of the utility model is to provide a line end connector and a connector assembly to solve the problem of insufficient anti-crosstalk capability of the connector in the prior art in view of the deficiencies in the prior art.

[0004] In order to achieve the above object, the utility model provides a line end connector, comprising:

[0005] An insulating body, wherein a receiving cavity is disposed in the insulating body, wherein a plurality of rows of first terminal groups are disposed in the receiving cavity, and each row of the first terminal groups is electrically connected to a cable group;

[0006] A first grounding plate and a second grounding plate, wherein the first grounding plate and the second grounding plate are respectively arranged on both sides of each row of the first terminal group, and the first grounding plate and the second grounding plate are electrically connected to the grounding terminals in the first terminal group.

[0007] Optionally, a first reinforcing plate is connected to a side of the first grounding plate away from the second grounding plate, and / or a second reinforcing plate is connected to a side of the second grounding plate away from the first grounding plate.

[0008] Optionally, the first grounding plate and the second grounding plate are respectively arranged on a side of the first terminal group away from the bottom surface of the insulating body and a side close to the bottom surface of the insulating body, and an extension portion is provided at one end of the first grounding plate away from the cable group. The extension portion is arranged on a side of the first terminal group away from the bottom surface of the insulating body and forms a first gap between the grounding terminal of the first terminal group.

[0009] Optionally, a connecting portion is provided between adjacent extension portions, the connecting portion is electrically connected to the adjacent extension portions, a second gap is formed between the connecting portion and the first terminal group, and the second gap is larger than the first gap.

[0010] Optionally, each row of the first terminal group includes a plurality of the ground terminals and a plurality of signal terminals, each of the cable groups includes a plurality of cables, each of the cables includes at least one signal core and at least one ground core, the signal core of each cable and the signal terminal electrically connected thereto form a signal transmission unit, and at least one ground terminal is arranged between two adjacent signal transmission units.

[0011] Optionally, each of the cables includes a pair of signal cores and a pair of ground cores, the pair of signal cores are connected to a pair of adjacent signal terminals, the pair of ground cores are respectively located on both sides of the pair of signal cores, the pair of ground cores are respectively connected to ground terminals located on both sides of a pair of adjacent signal terminals, and the two adjacent ground terminals are integrally connected near one end of the cable.

[0012] Optionally, a plurality of the grounding terminals are connected by a long strip of connecting tape at one end close to the cable.

[0013] Optionally, multiple rows of the first terminal groups are arranged side by side in the accommodating cavity, the accommodating cavity extends from the top surface to the bottom surface of the insulating body, one end of the first terminal group extends to the outside of the bottom surface of the insulating body, one end of the cable group is electrically connected to the other end of the first terminal group, and the other end of the cable group extends to the outside of the top surface of the insulating body.

[0014] Optionally, a length of one end of the first terminal group extending out of the bottom surface of the insulating body is 0.05-1 mm.

[0015] Optionally, each of the first terminal groups further includes a first injection molded body and a second injection molded body, one end of the first injection molded body is wrapped around the outside of the first terminal group, a plurality of protrusions are provided at the middle of the first injection molded body, the protrusions are used to separate the wire cores of the cable group, a plurality of limiting grooves are provided at the other end of the first injection molded body, the limiting grooves are used to limit the cables of the cable group, the second injection molded body is connected to the first injection molded body, and the second injection molded body wraps the cable group.

[0016] Optionally, the first grounding plate and the second grounding plate are both wall-shaped bent plates, the trough position of the second grounding plate is connected to the grounding terminal, the crest position of the second grounding plate is provided with an outwardly extending extension portion, and an avoidance groove is provided on one side of the first injection molded body, and the extension portion is embedded in the avoidance groove.

[0017] Optionally, the plurality of first terminal groups are arranged obliquely relative to the bottom surface of the insulating body.

[0018] Optionally, an installation shell is provided in the insulating body, an installation groove is provided in the installation shell, one end of the first terminal group and the cable group connected thereto are provided in the installation groove, outwardly protruding guide strips are provided on both sides of the installation shell, and guide grooves cooperating with the guide strips are provided on both side walls of the accommodating cavity in the insulating body.

[0019] Optionally, one end of the insulating body is provided with an installation opening communicated with the accommodating cavity, capable of accommodating the installation shell to pass therethrough, and the installation shell is detachably connected to the insulating body.

[0020] Optionally, a connecting ear is provided on the outer periphery of the insulating body, and a mounting hole is opened inside the connecting ear.

[0021] Optionally, a positioning column is provided on the bottom surface of the insulating body.

[0022] The utility model also provides a connector assembly, comprising:

[0023] The above-mentioned line end connector;

[0024] Board-side connector.

[0025] Optionally, the board-side connector includes:

[0026] A main board, wherein the main board is provided with a connection structure, and the connection structure is used to be connected to the insulating body;

[0027] An electrical connection portion is provided on the surface of the mainboard, and when the insulating body is connected to the connection structure, the first terminal group is electrically connected to the electrical connection portion.

[0028] Optionally, the connecting structure includes a nut, which is arranged on a side of the mainboard away from the electrical connection part. A connecting ear is arranged on the outer periphery of the insulating body, and a mounting hole is opened inside the connecting ear, which can be connected to the nut by passing a bolt through the mounting hole.

[0029] The utility model provides a line end connector and a connector assembly, which have the beneficial effects of: the line end connector is provided with multiple rows of first terminal groups in the accommodating cavity of the insulating body, each row of the first terminal groups is electrically connected to a cable group and can be used for signal transmission, and the first grounding plate and the second grounding plate are arranged to be electrically connected to the grounding terminals in the first terminal group from both sides of each row of the first terminal groups, which can improve the anti-crosstalk performance between the first terminal groups in the front and rear rows.

[0030] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0032] Figure 1 A schematic diagram of the appearance structure of a wire end connector according to the first embodiment of the utility model is shown.

[0033] Figure 2 A schematic diagram of the exploded structure of a line end connector according to the first embodiment of the utility model is shown.

[0034] Figure 3 A schematic diagram of the internal structure of a line end connector according to the first embodiment of the utility model is shown.

[0035] Figure 4 A structural schematic diagram from one perspective of a group of signal transmission units of a line end connector according to the first embodiment of the utility model is shown.

[0036] Figure 5 A schematic diagram of the exploded structure of a group of signal transmission units of a line end connector according to the first embodiment of the utility model is shown from one perspective.

[0037] Figure 6 A structural schematic diagram from another perspective of a group of signal transmission units of a line end connector according to the first embodiment of the utility model is shown.

[0038] Figure 7 A schematic diagram of the internal structure of a signal transmission unit of a line end connector according to the first embodiment of the utility model is shown.

[0039] Figure 8 A schematic structural diagram of a connector assembly according to the first embodiment of the utility model is shown.

[0040] Fig. 9 A schematic diagram of the internal structure of a connector assembly according to the first embodiment of the utility model is shown.

[0041] Fig.10 A schematic diagram of the internal structure of a line end connector according to the second embodiment of the present utility model is shown.

[0042] Fig.11 A structural schematic diagram of a group of signal transmission units of a line end connector according to the second embodiment of the present utility model from one viewing angle is shown.

[0043] Fig.12A schematic diagram of the exploded structure of a group of signal transmission units of a line end connector according to the second embodiment of the present utility model is shown from one perspective.

[0044] Fig.13 A structural schematic diagram from another perspective of a group of signal transmission units of a line end connector according to the second embodiment of the utility model is shown.

[0045] Fig.14 A schematic diagram of the exploded structure of a signal transmission unit of a line end connector according to a third embodiment of the present utility model is shown from one perspective.

[0046] Description of reference numerals:

[0047] 1. Insulating body; 2. First terminal group; 3. Cable group; 4. First grounding plate; 5. Second grounding plate; 6. First reinforcing plate; 7. Extension part; 8. Connection part; 9. Grounding terminal; 10. Signal terminal; 11. Grounding core; 12. Signal core; 13. Second injection molding body; 14. Main board; 15. Electrical connection part; 16. First injection molding body; 17. Protrusion; 18. Limiting groove; 19. Mounting shell; 20. Mounting port; 21. Avoidance groove; 22. Extension part; 23. Screw; 24. Connecting ear; 25. Bolt; 26. Second reinforcing plate; 27. Positioning column. DETAILED DESCRIPTION

[0048] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0049] Embodiment 1

[0050] like Figures 1 to 7 As shown, the utility model provides a line end connector, comprising:

[0051] An insulating body 1, wherein a receiving cavity is provided in the insulating body 1, wherein a plurality of rows of first terminal groups 2 are provided in the receiving cavity, and each row of the first terminal groups 2 is electrically connected to a cable group 3;

[0052] The first grounding plate 4 and the second grounding plate 5 are respectively arranged on both sides of each row of the first terminal group 2 , and the first grounding plate 4 and the second grounding plate 5 are electrically connected to the grounding terminals 9 in the first terminal group 2 .

[0053] Specifically, in order to solve the problem of insufficient anti-crosstalk capability of connectors in the prior art, the line end connector provided by the utility model is provided with multiple rows of first terminal groups 2 in the accommodating cavity of the insulating body 1, and each row of the first terminal group 2 is electrically connected to a cable group 3 and can be used for signal transmission. The first grounding plate 4 and the second grounding plate 5 are electrically connected to the grounding terminals 9 in the first terminal group 2 from both sides of each row of the first terminal group 2, which can improve the anti-crosstalk performance between the first terminal groups 2 between the front and rear rows.

[0054] Optionally, a first reinforcing plate 6 is connected to a side of the first grounding plate 4 away from the second grounding plate 5 , and / or a second reinforcing plate is connected to a side of the second grounding plate 5 away from the first grounding plate 4 .

[0055] In this embodiment, only the side of the first grounding plate 4 away from the second grounding plate 5 is connected with the first reinforcing plate 6 , and the second reinforcing plate is not provided.

[0056] In this embodiment, the material of the first reinforcing plate 6 is the same as that of the first grounding plate 5 .

[0057] Specifically, the provision of the first reinforcing plate 6 can reinforce the first terminal group 2 as a whole, thereby avoiding deformation caused by insufficient structural strength of the entire row of first terminal groups 2, and further avoiding poor contact between the first terminal group 2 and the electrical connection part 15 of the board-end connector when the line-end connector and the board-end connector are plugged in. The first reinforcing plate 6 can be welded to the first grounding plate 5; the second reinforcing plate and the first reinforcing plate 6 are the same.

[0058] Optionally, each row of the first terminal group 2 includes a plurality of ground terminals 9 and a plurality of signal terminals 10, each cable group 3 includes a plurality of cables, each cable includes at least one signal core 12 and at least one ground core 11, and the signal core 12 of each cable and the signal terminal 10 electrically connected thereto form a signal transmission unit, and at least one ground terminal 9 is arranged between two adjacent signal transmission units.

[0059] Specifically, each row of the first terminal group 2 includes a plurality of ground terminals 9 and a plurality of signal terminals 10 arranged in a row. In each row of the first terminal group 2, the ground terminals 9 are located on both sides of the signal terminal 10 of each signal transmission unit.

[0060] In this embodiment, the first grounding plate 4 and the second grounding plate 5 are both in a zigzag shape, forming a wall shape, and the first grounding plate 4 and the second grounding plate 5 are connected to all the grounding terminals 9 from both sides of the first terminal group 2 .

[0061] Optionally, each cable includes a pair of signal cores 12 and a pair of ground cores 11, the pair of signal cores 12 are connected to a pair of adjacent signal terminals 10, the pair of ground cores 11 are respectively located on both sides of the pair of signal cores 12, the pair of ground cores 11 are respectively connected to the ground terminals 9 located on both sides of the pair of adjacent signal terminals 10, and the two adjacent ground terminals 9 are integrally connected near one end of the cable.

[0062] Specifically, the cable group includes a plurality of cables arranged in a row, each cable includes a pair of signal cores 12 and a pair of ground cores 11, the pair of ground cores 11 are arranged on both sides of the pair of signal cores 12 away from each other, the pair of signal cores 12 can form a differential signal pair, and the pair of ground cores 11 are connected to two ground terminals 9; in this way, two ground terminals 9 are respectively arranged on both sides of a pair of signal terminals 10 in the first terminal group 2, and the two ground terminals 9 are connected near one end of the cable.

[0063] Optionally, a plurality of grounding terminals 9 are connected at one end close to the cable by a long strip of connecting tape.

[0064] Specifically, a plurality of ground terminals 9 may also be connected together by a connecting strip to form an integrated structure.

[0065] Optionally, multiple rows of first terminal groups 2 are arranged side by side in the accommodating cavity, the accommodating cavity extends from the top surface to the bottom surface of the insulating body 1, one end of the first terminal group 2 extends to the outside of the bottom surface of the insulating body 1, one end of the cable group 3 is electrically connected to the other end of the first terminal group 2, and the other end of the cable group 3 extends to the outside of the top surface of the insulating body 1.

[0066] In this embodiment, five rows of first terminal groups 2 are provided, and the five rows of first terminal groups 2 are arranged at intervals in the accommodating cavity so as to be plugged and unplugged synchronously.

[0067] Optionally, the length of one end of the first terminal group 2 extending from the bottom surface of the insulating body 1 is 0.05-1 mm.

[0068] Specifically, the length of the first terminal group 2 extending from the bottom surface of the insulating body 1 cannot be too short to ensure that the first terminal group 2 is in good contact with the electrical connection part 15 of the line end connector. The length of the first terminal group 2 extending from the bottom surface of the insulating body 1 cannot be too long to avoid excessive deformation of the first terminal group 15 when the line end connector is connected to the board end connector.

[0069] Optionally, each first terminal group 2 also includes a first injection molded body 16 and a second injection molded body 13, one end of the first injection molded body 16 is wrapped around the outside of the first terminal group 2, a plurality of protrusions 17 are provided in the middle of the first injection molded body 16, the protrusions 17 are used to separate the wire cores of the cable group 3, a plurality of limiting grooves 18 are provided at the other end of the first injection molded body 16, the limiting grooves 18 are used to limit the cables of the cable group 3, the second injection molded body 13 is connected to the first injection molded body 16, and the second injection molded body 13 wraps the cable group 3.

[0070] Specifically, the first injection molding body 16 limits each terminal of a row of first terminal groups 2, and separates each terminal and the wire core of the cable group 3 connected to each terminal through multiple protrusions 17, thereby forming a further isolation and positioning effect, and the limiting groove 18 on the first injection molding body 16 can limit each cable of the cable group 13, thereby improving the stability of the cables before the second injection molding body 13 is formed during cable installation, and the second injection molding body at least wraps one end of the cable of the cable group 3, thereby improving the overall connection strength and structural strength.

[0071] Optionally, the first grounding plate 4 and the second grounding plate 5 are both wall-shaped bent plates, the trough position of the second grounding plate 5 is connected to the grounding terminal 9, the crest position of the second grounding plate 5 is provided with an outwardly extending extension portion 21, and a avoidance groove 20 is provided on one side of the first injection molded body 12, and the extension portion 21 is embedded in the avoidance groove 20.

[0072] Specifically, the trough position of the first grounding sheet 4 is connected to the grounding terminal 9 , and the extension portion 21 on the second grounding sheet 5 can play a role in signal crosstalk shielding and cooperate with the avoidance groove 20 on the first injection molded body 12 .

[0073] Optionally, the plurality of first terminal groups 2 are arranged obliquely relative to the bottom surface of the insulating body 1 .

[0074] Specifically, the first terminal group 2 and the cable group 3 are both arranged obliquely relative to the bottom surface of the insulating body 1, which can make the line end connector lower and save usage space.

[0075] Optionally, an installation shell 19 is provided in the insulating body 1, and an installation groove is provided in the installation shell 19. One end of the first terminal group 2 and the cable group 3 connected thereto are provided in the installation groove. Guide strips protruding outward are provided on both sides of the installation shell 19, and guide grooves cooperating with the guide strips are provided on both side walls of the accommodating cavity in the insulating body 1.

[0076] Specifically, after the integral structure formed by connecting the first terminal group 2 and the cable group 3 is installed inside the installation shell 19, the entire structure is uniformly loaded into the accommodating cavity in the insulating body 1. The cooperation between the guide strip and the guide groove facilitates assembly on the one hand, and has a vertical limiting effect on the other hand.

[0077] Optionally, one end of the insulating body is provided with an installation opening communicated with the accommodating cavity, the installation opening can accommodate the installation shell 19 passing through, and the installation shell is detachably connected to the insulating body.

[0078] Specifically, the installation shell 19 can be installed into the insulating body 1 through the installation opening. During this process, the guide bar and the guide groove are slidably matched. After installation, the installation shell 19 can be fixedly connected to the insulating body 1 by screws 23.

[0079] In this embodiment, a connecting ear 24 is disposed on the outer periphery of the insulating body, and a mounting hole is formed inside the connecting ear 24 .

[0080] Specifically, by providing the connecting ears 24 and the mounting holes, it is convenient to connect the insulating body 1 to the main board 14 by bolts or screws.

[0081] In this embodiment, the connection structure includes a nut, which is arranged on the side of the mainboard away from the electrical connection part. A connecting ear 24 is arranged on the outer periphery of the insulating body 1, and a mounting hole is opened inside the connecting ear 24. The bolt 25 can pass through the mounting hole to connect with the nut.

[0082] Specifically, the bolt 25 passes through the mounting hole on the connecting ear 24 and the main board 14, and is connected to the nut on the other side of the main board to achieve the connection between the line end connector and the board end connector.

[0083] In this embodiment, a positioning column 27 is disposed on the bottom surface of the insulating body 1 .

[0084] Specifically, the positioning column 27 on the bottom surface of the insulating body 1 extends toward the board-end connector and can be plugged with the board-end connector to achieve positioning when the line-end connector is connected to the board-end connector.

[0085] like Figure 8 and Fig. 9 As shown, the utility model also provides a connector assembly, including:

[0086] The above-mentioned line end connector;

[0087] Board-side connector.

[0088] Optionally, the board-side connector includes:

[0089] A main board 14, the main board is provided with a connection structure, and the connection structure is used to connect with the insulating body;

[0090] The electrical connection part 15 is disposed on the surface of the main board 14 . When the insulating body 1 is connected to the connection structure, the first terminal group 2 is electrically connected to the electrical connection part 15 .

[0091] Specifically, when the above-mentioned line-end connector and the board-end connector are connected via the connection structure, the first terminal group 2 contacts the electrical connection portion 15 and undergoes elastic deformation, thereby achieving signal conduction and transmission.

[0092] In this embodiment, the electrical connection portion 15 is a gold finger.

[0093] In this embodiment, the connection structure includes a nut, which is arranged on the side of the mainboard away from the electrical connection part. A connecting ear 24 is arranged on the outer periphery of the insulating body 1, and a mounting hole is opened inside the connecting ear 24. The bolt 25 can pass through the mounting hole to connect with the nut.

[0094] Specifically, the bolt 25 passes through the mounting hole on the connecting ear 24 and the main board 14, and is connected to the nut on the other side of the main board to achieve the connection between the line end connector and the board end connector.

[0095] In this embodiment, a positioning column 27 is disposed on the bottom surface of the insulating body 1 .

[0096] Specifically, the positioning column 27 on the bottom surface of the insulating body 1 extends toward the board-end connector and can be plugged with the board-end connector to achieve positioning when the line-end connector is connected to the board-end connector.

[0097] Embodiment 2

[0098] like Figures 10 to 13 As shown, the difference between this embodiment and the first embodiment is that:

[0099] In this embodiment, the first grounding plate 4 and the second grounding plate 5 are respectively arranged on a side of the first terminal group 2 away from the bottom surface of the insulating body 1 and a side close to the bottom surface of the insulating body 1. An extension portion 7 is provided at one end of the first grounding plate 4 away from the cable group 3. The extension portion 7 is arranged on a side of the first terminal group 2 away from the bottom surface of the insulating body 1, and a first gap is formed between the extension portion 7 and the grounding terminal 9 of the first terminal group 2.

[0100] Specifically, the extension portion 7 is formed by extending outward from one end of the first grounding plate 4 away from the cable group 3, and the outer end of the extension portion 7 is located on the side of the first terminal group 2 away from the bottom surface of the insulating body 1, and is at a first gap distance from the first terminal group 2. When the line-end connector is plugged into the board-end connector, the first terminal group 2 contacts the electrical connection portion 15 of the board-end connector and undergoes elastic deformation, and the outer end of the first terminal group 2 moves upward and is able to contact the extension portion 7 to achieve electrical connection; such a setting can greatly improve the crosstalk in the performance of the line-end connector SI, i.e., far-end crosstalk and near-end crosstalk, after the extension portion 7 contacts and electrically connects with the grounding terminal 9 in the deformed first terminal group 2, and further improve its anti-crosstalk performance.

[0101] In this embodiment, a connecting portion 8 is provided between adjacent extending portions 7 , the connecting portion 8 is electrically connected to the adjacent extending portions 7 , and a second gap is formed between the connecting portion 8 and the first terminal group 2 , and the second gap is larger than the first gap.

[0102] Specifically, the second gap is larger than the first gap, so that when the extending portion 7 contacts the ground terminal 9 in the first terminal group 2 , the connecting portion 8 does not contact the signal terminal 10 in the first terminal group 2 .

[0103] Embodiment 3

[0104] like Fig.14 As shown, the difference between this embodiment and the first embodiment is that:

[0105] In this embodiment, a first reinforcing plate 6 is connected to a side of the first grounding plate 4 away from the second grounding plate 5 , and a second reinforcing plate 26 is connected to a side of the second grounding plate 5 away from the first grounding plate 4 .

[0106] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A line end connector, characterized in that: include: An insulating body, wherein a receiving cavity is disposed in the insulating body, wherein a plurality of rows of first terminal groups are disposed in the receiving cavity, and each row of the first terminal groups is electrically connected to a cable group; A first grounding plate and a second grounding plate, wherein the first grounding plate and the second grounding plate are respectively arranged on both sides of each row of the first terminal group, and the first grounding plate and the second grounding plate are electrically connected to the grounding terminals in the first terminal group.

2. The wire end connector according to claim 1, characterized in that: A first reinforcing plate is connected to a side of the first grounding plate away from the second grounding plate, and / or a second reinforcing plate is connected to a side of the second grounding plate away from the first grounding plate.

3. The wire end connector according to claim 1, characterized in that: The first grounding plate and the second grounding plate are respectively arranged on a side of the first terminal group away from the bottom surface of the insulating body and a side close to the bottom surface of the insulating body. An extension portion is arranged at one end of the first grounding plate away from the cable group. The extension portion is arranged on a side of the first terminal group away from the bottom surface of the insulating body and forms a first gap between the grounding terminal of the first terminal group.

4. The wire end connector according to claim 3, characterized in that: A connecting portion is provided between adjacent extending portions, the connecting portion is electrically connected to the adjacent extending portions, a second gap is formed between the connecting portion and the first terminal group, and the second gap is larger than the first gap.

5. The wire end connector according to claim 1, characterized in that: Each row of the first terminal group includes a plurality of the grounding terminals and a plurality of signal terminals, each of the cable groups includes a plurality of cables, each of the cables includes at least one signal core and at least one grounding core, the signal core of each cable and the signal terminal electrically connected thereto form a signal transmission unit, and at least one grounding terminal is arranged between two adjacent signal transmission units.

6. The wire end connector according to claim 5, characterized in that: Each of the cables includes a pair of signal cores and a pair of ground cores, the pair of signal cores are connected to a pair of adjacent signal terminals, the pair of ground cores are respectively located on both sides of the pair of signal cores, the pair of ground cores are respectively connected to the ground terminals located on both sides of a pair of adjacent signal terminals, and the two adjacent ground terminals are integrally connected near one end of the cable.

7. The wire end connector according to claim 5, characterized in that: The plurality of ground terminals are connected at one end close to the cable by a long strip-shaped connecting belt.

8. The wire end connector according to claim 1, characterized in that: Multiple rows of the first terminal groups are arranged side by side in the accommodating cavity, and the accommodating cavity extends from the top surface to the bottom surface of the insulating body. One end of the first terminal group extends to the outside of the bottom surface of the insulating body, and one end of the cable group is electrically connected to the other end of the first terminal group, and the other end of the cable group extends to the outside of the top surface of the insulating body.

9. The wire end connector according to claim 8, characterized in that: One end of the first terminal group extends out of the bottom surface of the insulating body by a length of 0.05-1 mm.

10. The wire end connector according to claim 8, characterized in that: Each of the first terminal groups also includes a first injection-molded body and a second injection-molded body, one end of the first injection-molded body wraps at least a portion of the first terminal group, a plurality of protrusions are provided in the middle of the first injection-molded body, the protrusions are used to separate the wire cores of the cable group, a plurality of limiting grooves are provided at the other end of the first injection-molded body, the limiting grooves are used to limit the cables of the cable group, the second injection-molded body is connected to the first injection-molded body, and the second injection-molded body wraps the cable group.

11. The wire end connector according to claim 10, characterized in that: The first grounding plate and the second grounding plate are both wall-shaped bent plates, the trough position of the second grounding plate is connected to the grounding terminal, the crest position of the second grounding plate is provided with an outwardly extending extension portion, and an avoidance groove is provided on one side of the first injection molded body, and the extension portion is embedded in the avoidance groove.

12. The wire end connector according to claim 8, characterized in that: The plurality of first terminal groups are arranged obliquely relative to the bottom surface of the insulating body.

13. The wire end connector according to claim 10, characterized in that: An installation shell is provided in the insulating body, an installation groove is provided in the installation shell, one end of the first terminal group and the cable group connected thereto are provided in the installation groove, outwardly protruding guide strips are provided on both sides of the installation shell, and guide grooves cooperating with the guide strips are provided on both side walls of the accommodating cavity in the insulating body.

14. The wire end connector according to claim 13, characterized in that: One end of the insulating body is provided with an installation opening communicated with the accommodating cavity, the installation opening can accommodate the installation shell passing through, and the installation shell is detachably connected to the insulating body.

15. The wire end connector according to claim 1, characterized in that: The outer periphery of the insulating body is provided with a connecting ear, and the interior of the connecting ear is provided with a mounting hole.

16. The wire end connector according to claim 15, characterized in that: The bottom surface of the insulating body is provided with a positioning column.

17. A connector assembly, characterized in that: include: The wire end connector according to any one of claims 1 to 16; Board-side connector.

18. The connector assembly according to claim 17, wherein: The board-side connector comprises: A main board, wherein the main board is provided with a connection structure, and the connection structure is used to be connected to the insulating body; An electrical connection portion is provided on the surface of the mainboard, and when the insulating body is connected to the connection structure, the first terminal group is electrically connected to the electrical connection portion.

19. The connector assembly according to claim 18, wherein: The connection structure includes a nut, which is arranged on a side of the mainboard away from the electrical connection part. A connecting ear is arranged on the outer periphery of the insulating body, and a mounting hole is opened inside the connecting ear. The connecting ear can be connected to the nut by passing a bolt through the mounting hole.

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