Connector with anti-crosstalk function

Abstract

The utility model discloses a connector with an anti-crosstalk function. Two terminals which are not adjacent to each other in the same differential signal pair and two terminals which are adjacent to each other in the other same differential signal pair are arranged in a front-back staggered manner; the signal crosstalk between different differential signal pairs is reduced through a front-back staggered arrangement mode, meanwhile, the transmission process that part of terminals are replaced by the PCBs is achieved through cooperation of the first PCB and the conversion terminal set, the crosstalk is further reduced, and meanwhile the shielding shell is matched with the first shielding piece and the second shielding piece, so that the transmission efficiency is improved. According to the utility model, interference of external signals can be prevented, signals between the terminal groups in the adjacent insertion cavities can be shielded, the shielding effect is better, and the stability of the signal transmission process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a connector with a crosstalk prevention function. Background Art

[0002] A connector is also called a plug. In China, it is also called a connector and a socket, generally referring to an electrical connector. That is, a device that connects two active devices to transmit current or signals. The male end and the female end can transmit information or current after contact, and it is also called a connector. The basic performance of a connector can be divided into three categories: mechanical performance, electrical performance, and environmental performance. Another important mechanical performance is the mechanical life of the connector. The mechanical life is actually a durability index, which is called mechanical operation in the national standard GB5095. It takes one insertion and one extraction as a cycle, and judges whether the connector can normally complete its connection function (such as the contact resistance value) after the specified number of insertion and extraction cycles.

[0003] In the existing double-layer connector, the two terminals in different differential signal pairs are respectively located between the remaining differential signal pairs, resulting in the non-adjacent two terminals in the same differential signal pair interfering with the signal transmission process of the remaining differential signal pairs. Therefore, signal crosstalk occurs between different differential signal pairs in the same terminal group. At the same time, the double-layer connector uses an external shielding case in its structure to prevent external signal crosstalk. However, during the signal transmission process between the upper and lower layers of terminals and between laterally adjacent terminals, crosstalk still occurs, affecting the overall transmission process of the connector. Its shielding effect is not good only by using the structure of the shielding case, and it cannot solve the internal crosstalk situation, affecting the stability of the internal signal transmission process of the connector. Therefore, it is necessary to further improve the existing connector structure. Summary of the Utility Model

[0004] In view of this, the main purpose of the present utility model is to provide a connector with a crosstalk prevention function, which can effectively solve the problems of easy signal crosstalk, poor shielding effect, and unstable signal transmission process in the existing double-layer connector.

[0005] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0006] A connector with crosstalk prevention function, comprising an insulating body, a first PCB board, a terminal group, a transfer terminal group, a shielding case, a first shielding member and a second shielding member; a plugging cavity is integrally recessed inward on the front end face of the insulating body, the plugging cavity is arranged in two layers up and down, and each layer includes a plurality of plugging cavities arranged at intervals horizontally; a plurality of the first PCB boards are provided, and each first PCB board is arranged on the insulating body and located in the corresponding plugging cavity; a plurality of the terminal groups are provided, each terminal group is arranged on the insulating body and extends inward into the corresponding plugging cavity, each terminal group includes a plurality of differential signal pairs, each differential signal pair includes two terminals, and the terminals are connected to the first PCB board; among them, two non-adjacent terminals in the same differential signal pair and two adjacent terminals in the other same differential signal pair are arranged in a front-back dislocation; a plurality of the transfer terminal groups are provided, which are arranged on the insulating body and connected to the corresponding first PCB board, and the other end of the transfer terminal group extends out of the insulating body and is connected to an external second PCB board; the shielding case is sleeved on the outer surface of the insulating body; a plurality of the first shielding members are arranged at intervals horizontally, each first shielding member is arranged in the insulating body and located between the upper and lower layers of plugging cavities, and the first shielding members are all conducted with the shielding case; the second shielding member is arranged in the insulating body, the second shielding member is a plurality of arranged at intervals horizontally, each second shielding member is arranged between the horizontally adjacent two terminal groups and the transfer terminal group, and each second shielding member is all conducted with the shielding case.

[0007] As a preferred solution, each terminal includes an integrally formed main body portion, a contact portion and a welding portion, the main body portion is located at the bottom of the plugging cavity, and the contact portion is integrally bent upward from the main body portion; the welding portion is connected to the first PCB board; for two non-adjacent terminals in the same differential signal pair, the main body portions and welding portions of the two adjacent terminals in the other same differential signal pair are arranged in a front-back dislocation.

[0008] As a preferred solution, a mounting plate is arranged on the insulating body, the mounting plate is located in the plugging cavity, and the main body portion is embedded in the mounting plate; a fixing plate is also arranged on the insulating body, and the transfer terminal group is embedded in the fixing plate.

[0009] As a preferred solution, the transfer terminal group includes a plurality of transfer terminals, and the two transfer terminals connected to the two terminals in the same differential signal pair are arranged adjacent to each other.

[0010] As a preferred solution, an insulating tape is attached to the rear end face of the insulating body, and the insulating tape is clamped between the insulating body and the shielding case.

[0011] As a preferred solution, a pin for external connection extends integrally downward from the lower end face of the shielding case.

[0012] As a preferred solution, the two sets of transfer terminals arranged in the two insertion cavities corresponding up and down are arranged in a front-back staggered manner; the first shielding member includes a first main body portion extending horizontally and a second main body portion extending vertically, and the first main body portion is clamped between the two sets of terminals corresponding up and down; the second main body portion is clamped between the two sets of transfer terminals corresponding front and back.

[0013] As a preferred solution, elastic pieces extend integrally outward from the left and right sides of the first shielding member, and the elastic pieces on the first shielding member located on the inner side are in contact conduction with the adjacent second shielding member, and the elastic pieces on the first shielding member located on the outer side are in contact conduction with the shielding case.

[0014] As a preferred solution, the second shielding member includes a mounting portion and a shielding portion. The shielding portion is partially inserted into the mounting portion from front to back, and the rear end of the shielding portion protrudes backward from the mounting portion to form a connecting portion, and the adjacent first shielding members are in contact conduction with the connecting portion through elastic pieces respectively.

[0015] As a preferred solution, the upper and lower side walls of the second shielding member are respectively located above the terminal group in the upper insertion cavity and below the terminal group in the lower insertion cavity.

[0016] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions:

[0017] It arranges two non-adjacent terminals in the same differential signal pair and the other two adjacent terminals in the same differential signal pair in a front-back staggered manner; by means of the front-back staggered arrangement method, the crosstalk between different differential signal pairs is reduced. At the same time, the cooperation between the first PCB board and the transfer terminal group realizes the transmission process of replacing part of the terminals through the PCB board, further reducing the crosstalk. At the same time, the cooperation between the shielding case and the first shielding member and the second shielding member can not only prevent interference from external signals, but also play a shielding role for the signals between the terminal groups in adjacent insertion cavities, with better shielding effect and ensuring the stability of the signal transmission process.

[0018] To more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below with reference to the drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of a preferred embodiment of the present invention;

[0020] Figure 2 is an exploded state schematic diagram of a preferred embodiment of the present invention;

[0021] Figure 3 is a partial assembly schematic diagram of a preferred embodiment of the present invention;

[0022] Figure 4 This is another partial assembly diagram of a preferred embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the first shielding member in a preferred embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the second shielding member in a preferred embodiment of the present utility model;

[0025] Figure 7 It is a cross-sectional schematic diagram of a preferred embodiment of the present utility model.

[0026] Description of the accompanying drawings:

[0027] 10. Insulation body 101, insertion cavity

[0028] 11. Mounting plate 12. Fixing plate

[0029] 13. Insulation tape 20. First PCB board

[0030] 30. Terminal group 31. Differential signal pair

[0031] 32. Terminal 321. Main body

[0032] 322, contact portion 323, welding portion

[0033] 40. Transfer terminal group 41. Transfer terminal

[0034] 50. Shielding shell 51. Pin

[0035] 60. First shielding member 61. First main body

[0036] 62. Second body 63. Shrapnel

[0037] 70. Second shielding member 71. Mounting portion

[0038] 72. Shielding part 721. Connecting part

[0039] 80. Second PCB board. DETAILED DESCRIPTION

[0040] Please refer to Figures 1 to 7 As shown, it shows the specific structure of a preferred embodiment of the present invention, which includes an insulating body 10, a first PCB board 20, a terminal group 30, a transfer terminal group 40, a shielding shell 50, a first shielding member 60 and a second shielding member 70.

[0041] The front end face of the insulating body 10 is integrally concave inwardly to form an insertion cavity 101. The insertion cavity 101 is provided in two layers up and down, and each layer includes a plurality of insertion cavities 101 arranged at intervals in the horizontal direction. In this embodiment, an installation plate 11 is provided on the insulating body 10, and the installation plate 11 is located in the insertion cavity 101. A fixing plate 12 is also provided on the insulating body 10. The rear end face of the insulating body 10 is attached with an insulating tape 13. The insulating tape 13 is clamped between the insulating body 10 and the shielding case 50, and the insulating tape 13 is used to prevent contact short circuit between the components exposed at the rear end face of the insulating body 10 and the shielding case 50.

[0042] A plurality of the first PCB boards 20 are provided. Each first PCB board 20 is disposed on the insulating body 10 and located in the corresponding insertion cavity 101.

[0043] A plurality of the terminal groups 30 are provided. Each terminal group 30 is disposed on the insulating body 10 and extends inwardly into the corresponding insertion cavity 101. Each terminal group 30 includes a plurality of differential signal pairs 31. Each differential signal pair 31 includes two terminals 32. The terminals 32 are connected to the first PCB board 20. Among them, two non-adjacent terminals 32 in the same differential signal pair 31 and two adjacent terminals 32 in the other same differential signal pair 31 are arranged in a front-back staggered manner, thereby effectively reducing the signal crosstalk between different differential signal pairs 31. In this embodiment, each terminal 32 includes an integrally formed main body portion 321, a contact portion 322, and a welding portion 323. The main body portion 321 is located at the bottom of the insertion cavity 101. The contact portion 322 is integrally bent upward from the main body portion 321. The welding portion 323 is connected to the first PCB board 20. The main body portions 322 and welding portions 323 of two non-adjacent terminals 32 in the same differential signal pair 31 and two adjacent terminals 32 in the other same differential signal pair 31 are arranged in a front-back staggered manner, thereby ensuring the contact stability between the two terminals 32 in different differential signal pairs 31 and the outside. The main body portion 321 is embedded in the installation plate 11, and the installation plate 11 is used to fix the position of the main body portion 321 of the UI, ensuring the structural stability between the terminal 32 and the insulating body 10.

[0044] The adapter terminal group 40 is provided in multiple numbers. It is provided on the insulating body 10 and is connected to the corresponding first PCB board 20. The other end of the adapter terminal group 40 extends out of the insulating body 10 and is connected to the external second PCB board 80. Through the cooperation of the adapter terminal group 40 and the first PCB board 20, the transmission process of some terminals is replaced by the PCB board, and the anti-crosstalk effect is better during the transmission process of the PCB board. In this embodiment, the adapter terminal group 40 is embedded in the fixing plate 12, and the fixing plate 12 is used to fix the position of the adapter terminal group 40, thereby increasing the structural strength of the adapter terminal group 40. The adapter terminal group 40 includes a plurality of adapter terminals 41. The two adapter terminals 41 connected to the two terminals 32 in the same differential signal pair 31 are arranged adjacent to each other, further preventing crosstalk between the adapter terminals 41 connected to different differential signal pairs 31. The two adapter terminal groups 40 arranged up and down correspondingly in the two insertion cavities 101 are arranged staggeredly front and back.

[0045] The shielding case 50 is sleeved on the outer surface of the insulating body 10. The shielding case 50 is used to shield external signals. In this embodiment, a pin 51 connected to the outside extends integrally downward from the lower end surface of the shielding case 50, and the shielding case 50 is connected to the external second PCB board 80 through the pin 51, thereby achieving the shielding effect.

[0046] The first shielding members 60 are provided in multiple numbers arranged at intervals horizontally. Each first shielding member 60 is provided in the insulating body 10 and is located between the upper and lower insertion cavities 101. The first shielding members 60 are all electrically connected to the shielding case 50, thereby achieving shielding between the terminal groups 30 in the upper and lower corresponding insertion cavities 101. In this embodiment, the first shielding member 60 includes a first main body portion 61 extending horizontally and a second main body portion 62 extending vertically. The first main body portion 61 is clamped between the two terminal groups 30 corresponding up and down. The second main body portion 62 is clamped between the two adapter terminal groups 40 corresponding front and back, thereby achieving the shielding effect on the terminal group 30 and the adapter terminal group 40 at the same time. Elastic pieces 63 extend integrally outward from the left and right sides of the first shielding member 60. The elastic pieces 63 on the first shielding member 60 located inside are in contact and electrical connection with the adjacent first shielding member 60, and the elastic pieces 63 on the first shielding member 60 located outside are in contact and electrical connection with the shielding case 50, thereby achieving electrical connection of each first shielding member 60 to the shielding case 50.

[0047] The second shielding member 70 is disposed in the insulating body 10. A plurality of second shielding members 70 are arranged at lateral intervals. Each second shielding member 70 is disposed between the laterally adjacent terminal groups 30 and the adapter terminal groups 40. Each second shielding member 70 is electrically connected to the shielding case 50, so as to achieve the shielding effect between the laterally adjacent terminal groups 30 and the adjacent two adapter terminal groups 40. Through the cooperation of the first shielding member 60 and the shielding case 50, the overall shielding effect is better, and the stability of the signal transmission process of the connector is further ensured. In this embodiment, the second shielding member 70 includes a mounting portion 71 and a shielding portion 72. The shielding portion 72 is partially inserted into the mounting portion 71 from front to back, and the rear end of the shielding portion 72 protrudes backward from the mounting portion 71 to form a connecting portion 721. The adjacent first shielding members 60 are respectively in contact with the connecting portion 721 through the elastic pieces 63, so as to achieve the electrical connection between the second shielding member 70 and the shielding case 50. The upper and lower side walls of the second shielding member 70 are respectively located above the terminal group 30 in the upper insertion cavity 101 and below the terminal group 30 in the lower insertion cavity 101, so that the shielding effect of the terminal groups 30 in the adjacent upper and lower insertion cavities 101 can be achieved by one second shielding member 70, the number of the second shielding members 70 is reduced, and the overall structure is simpler.

[0048] The design focus of the present utility model lies in that two non-adjacent terminals in the same differential signal pair are arranged in a front-back dislocation manner with respect to the other two adjacent terminals in the same differential signal pair; through the front-back dislocation arrangement method, the signal crosstalk between different differential signal pairs is reduced. At the same time, the cooperation between the first PCB board and the adapter terminal group realizes the transmission process of replacing part of the terminals through the PCB board, further reducing the crosstalk. At the same time, the cooperation between the shielding case and the first shielding member and the second shielding member can not only prevent interference from external signals, but also play a shielding role for the signals between the terminal groups in the adjacent insertion cavities, with a better shielding effect, ensuring the stability of the signal transmission process.

[0049] The above are only the preferred embodiments of the present utility model, and do not impose any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A connector with anti-crosstalk function, characterized in that: It includes an insulating body, a first PCB board, a terminal group, a transfer terminal group, a shielding case, a first shielding member, and a second shielding member; a plugging cavity is integrally recessed inward on the front end face of the insulating body, the plugging cavity is arranged in two layers up and down, and each layer includes a plurality of plugging cavities arranged at intervals horizontally; a plurality of the first PCB boards are provided, and each first PCB board is arranged on the insulating body and located in the corresponding plugging cavity; a plurality of the terminal groups are provided, each terminal group is arranged on the insulating body and extends inward into the corresponding plugging cavity, each terminal group includes a plurality of differential signal pairs, each differential signal pair includes two terminals, and the terminals are connected to the first PCB board; among them, two non-adjacent terminals in the same differential signal pair and two adjacent terminals in the other same differential signal pair are arranged in a front-back dislocation; a plurality of the transfer terminal groups are provided, which are arranged on the insulating body and connected to the corresponding first PCB board, and the other end of the transfer terminal group extends out of the insulating body and is connected to an external second PCB board; the shielding case is sleeved on the outer surface of the insulating body; a plurality of the first shielding members are arranged at intervals horizontally, each first shielding member is arranged in the insulating body and located between the upper and lower layers of plugging cavities, and the first shielding members are all electrically connected to the shielding case; the second shielding member is arranged in the insulating body, and a plurality of the second shielding members are arranged at intervals horizontally, each second shielding member is arranged between the horizontally adjacent two terminal groups and the transfer terminal group, and each second shielding member is all electrically connected to the shielding case.

2. The connector with crosstalk prevention function according to claim 1, characterized in that: Each terminal includes an integrally formed main body portion, a contact portion, and a welding portion. The main body portion is located at the bottom of the plugging cavity, and the contact portion is integrally bent upward from the main body portion; the welding portion is connected to the first PCB board; for two non-adjacent terminals in the same differential signal pair, the main body portions and the welding portions of the two adjacent terminals in the other same differential signal pair are arranged in a front-back dislocation.

3. The connector with crosstalk prevention function according to claim 2, characterized in that: An installation plate is arranged on the insulating body, and the installation plate is located in the plugging cavity. The main body portion is embedded in the installation plate; a fixing plate is also arranged on the insulating body, and the transfer terminal group is embedded in the fixing plate.

4. The connector with crosstalk prevention function according to claim 1, characterized in that: The transfer terminal group includes a plurality of transfer terminals, and the two transfer terminals connected to the two terminals in the same differential signal pair are arranged adjacent to each other.

5. The connector with crosstalk prevention function according to claim 1, characterized in that: An insulating tape is attached to the rear end face of the insulating body, and the insulating tape is clamped between the insulating body and the shielding case.

6. The connector with crosstalk prevention function according to claim 1, characterized in that: A pin for external connection extends integrally downward from the lower end face of the shielding case.

7. The connector with crosstalk prevention function according to claim 1, characterized in that: The two transfer terminal groups arranged corresponding to each other up and down are arranged in a front-back dislocation; the first shielding member includes a first main body portion extending horizontally and a second main body portion extending vertically, and the first main body portion is clamped between the two corresponding terminal groups up and down; the second main body portion is clamped between the two corresponding transfer terminal groups front and back.

8. The connector with crosstalk prevention function according to claim 1, characterized in that: Elastic pieces extend integrally outward from the left and right sides of the first shielding member. The elastic pieces on the first shielding member located inside are in contact and electrical connection with the adjacent second shielding member, and the elastic pieces on the first shielding member located outside are in contact and electrical connection with the shielding case.

9. The connector with crosstalk prevention function according to claim 8, wherein: The second shielding member includes an installation portion and a shielding portion. The shielding portion is partially inserted into the installation portion from front to back, and the rear end of the shielding portion protrudes backward from the installation portion to form a connecting portion. The adjacent first shielding members are in contact conduction with the connecting portion through elastic pieces respectively.

10. The connector with crosstalk prevention function according to claim 1, characterized in that: The upper and lower side walls of the second shielding member are respectively located above the terminal group in the upper insertion cavity and below the terminal group in the lower insertion cavity.

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