High speed cable connector with internal channel signal crosstalk prevention

Abstract

The application relates to a high-speed cable connector capable of preventing internal channel signal crosstalk, which comprises a connector PCB plate arranged in a shell and a plurality of channel signal lines connected to the connector PCB plate, the connector PCB plate is provided with signal pads corresponding to the channel signal lines, the front end of each channel signal line is provided with a core conductor exposed by cutting off an outer sheath and an aluminum foil and an insulating sheath in sequence, the core conductor is welded and fixed with the corresponding signal pad, and the aluminum foil is connected with a grounding wire; the application is characterized in that the connector PCB plate is further provided with an anti-crosstalk shield corresponding to each channel signal line, the shield comprises a shield body arranged transversely on the front part of the channel signal line and a grounding foot connected to the bottom of the shield body, the shield body at least completely covers the core conductor exposed at the front end of the corresponding channel signal line in the length direction, the grounding foot is inserted into a grounding welding hole on the connector PCB plate and welded and fixed, and the aluminum foil grounding wire is directly welded to the shield body. The application can greatly improve the internal channel signal crosstalk problem without increasing the distance between the signal pads.

Description

Technical Field

[0001] This invention relates to a high-speed cable connector that prevents internal channel signal crosstalk. Background Technology

[0002] Currently, high-speed cables used in the communications industry are all multi-channel products. Their connectors typically consist of a PCB board housed within a casing and multiple channel signal lines connected to it. The outer portion of these channel signal lines is cut away, and the inner aluminum foil and insulating sheath are sequentially cut open to expose the core conductors wrapped in the insulating sheath. The core conductors are then soldered to pre-set signal pads on the PCB board to complete the connection. A grounding wire is connected to the aluminum foil, and this grounding wire is soldered to the grounding pad on the PCB board to ensure the stability of the channel signal.

[0003] Because the aluminum foil, which provides signal shielding, surrounding the conductor at the signal pads is cut open, the electromagnetic signals radiating outward from the conductors lack obstruction, leading to significant crosstalk between the channel signal lines. Theoretically, increasing the spacing between the signal pads on the connector PCB can reduce crosstalk. However, the overall dimensions of high-speed cable connectors, including the width of the internal connector PCB, are fixed by industry standards. Although the number of channel signal lines corresponding to the signal pads on the connector PCB can be arranged side-by-side or staggered, the internal space of the connector limits their distance, inevitably causing excessive crosstalk between the channel signal lines and reducing the stability of the connector's signal transmission.

[0004] Furthermore, with the rapid development of the communications industry, the transmission rate of high-speed cable products has increased significantly, and the corresponding crosstalk between channels has also increased dramatically, failing to meet the association's specifications and urgently requiring improvement. Summary of the Invention

[0005] The purpose of this invention is to address the problems mentioned in the background art by providing a high-speed cable connector that prevents internal channel signal crosstalk, which can greatly improve the problem of internal channel signal crosstalk without increasing the spacing of internal signal pads.

[0006] The technical solution of the present invention is: a high-speed cable connector for preventing internal channel signal crosstalk, comprising a connector PCB board disposed within a housing and multiple channel signal lines connected thereon. The connector PCB board is provided with signal pads corresponding to each channel signal line. Each channel signal line has a core conductor exposed at its front end after the outer sheath, aluminum foil, and insulating sheath have been sequentially removed. The exposed core conductor is soldered and fixed to the corresponding signal pad, and a grounding wire is connected to the aluminum foil. The invention is characterized in that the connector PCB board is also provided with an anti-crosstalk shield for each channel signal line. This anti-crosstalk shield includes a cover body horizontally spanning the front of the channel signal line and a grounding pin connected to the bottom of the cover body. The cover body at least completely covers the exposed core conductor at the front end of the corresponding channel signal line in the length direction, and the grounding pin is inserted into a grounding solder hole provided on the connector PCB board for soldering and fixing. The grounding wire of the aluminum foil is directly soldered and fixed to the cover body.

[0007] Furthermore, the cover described in this invention is a U-shaped cover, and there are two grounding feet on it, which are integrally set at the front position of the two bottom edges of the U-shaped cover. The two grounding feet are respectively inserted into the two grounding solder holes provided on the PCB board and soldered and fixed.

[0008] Furthermore, in this invention, the two grounding solder holes are respectively arranged side by side on the left and right sides of the corresponding signal solder pads.

[0009] Furthermore, in this invention, each channel signal line has two grounding wires connected to its aluminum foil, and the two bottom edges of the U-shaped cover are bent outward to form two grounding connection wings. The two grounding wires are welded and fixed to the upper part of the two grounding connection wings, and the grounding connection wings are disconnected from the grounding feet at the front of their respective bottom edges.

[0010] More preferably, in this invention, both ground connection wings are welded and fixed to the connection wing pads provided on the connector PCB board. This not only ensures a more stable positioning of the anti-crosstalk shield, but also reduces the gap between the bottom edge of the U-shaped shield and the connector PCB board, enhancing the blocking effect.

[0011] Similar to known technologies, the signal pads on the connector PCB described in this invention can be arranged side by side or staggered in the width direction of the connector PCB.

[0012] As with known technologies, each channel signal line can have two or more core conductors, and the corresponding signal pads are composed of several unit signal pads that correspond one-to-one with these core conductors and are arranged side by side at intervals in the width direction of the PCB board.

[0013] The crosstalk shielding cover in this invention can be manufactured using any metal material known in the industry that has electromagnetic blocking and crosstalk prevention functions. Furthermore, the crosstalk shielding cover described in this invention is preferably made of copper or stainless steel and is integrally stamped and cast.

[0014] The advantages of using the technical solution of this invention are as follows:

[0015] 1. The high-speed cable connector of the present invention has a crosstalk shielding cover specially set on the corresponding channel signal line on the PCB board. The cover of the crosstalk shielding cover can completely cover the exposed core conductor of the corresponding channel signal line in the length direction, thereby effectively blocking the electromagnetic signal of the exposed core conductor of each channel signal line from radiating outward. This greatly reduces the signal crosstalk between multiple channels inside the high-speed cable connector, and thus effectively improves the signal transmission performance and stability of this type of high-speed cable connector product, further adapting to the speed increase requirements of high-speed cables.

[0016] 2. The high-speed cable connector of the present invention can significantly improve the crosstalk problem of internal channel signals without increasing the spacing of internal signal pads. It does not require changing the layout of multi-channel signal lines or reducing the number of channel signal lines, thus maintaining the integrity of the original multi-channel signal line layout of the high-speed cable connector. Furthermore, it does not require shielding or reinforcing the structure of the channel signal lines themselves, preserving the original high-speed cable and improving compatibility with existing high-speed cables, thereby significantly saving on improvement costs.

[0017] 3. In the high-speed cable connector of the present invention, due to the introduction of the anti-crosstalk shield, the aluminum foil grounding wire of the channel signal line can be directly soldered and fixed to the anti-crosstalk shield, that is, the grounding is completed by means of the anti-crosstalk shield. This avoids setting multiple grounding pads on the connector PCB, which can reduce the soldering process and improve the soldering and assembly efficiency of this type of high-speed cable connector.

[0018] 4. The anti-crosstalk shield introduced in the high-speed cable connector of the present invention effectively compensates for the shielding function of the aluminum foil on the outer periphery of the core conductor that was originally cut off. This anti-crosstalk shield itself has a simple structure, is easy to produce and assemble, and is conducive to its widespread application in existing high-speed cable connectors.

[0019] The objects, advantages, and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is an overall three-dimensional structural diagram of an embodiment of the present invention (outer shell omitted);

[0021] Figure 2 yes Figure 1 Enlarged view of part A in the diagram;

[0022] Figure 3 yes Figure 1 A separate 3D structural diagram of the PCB board with the middle connector;

[0023] Figure 4 yes Figure 1 A schematic diagram of the individual three-dimensional structure of a single channel signal line;

[0024] Figure 5 yes Figure 1 A schematic diagram of the first three-dimensional structure of the anti-crosstalk shielding cover;

[0025] Figure 6 yes Figure 1 A schematic diagram of the second three-dimensional structure of the anti-crosstalk shield.

[0026] The meanings of the labels in the figures are as follows:

[0027] 1. Connector PCB board; 101. Signal pad; 101a. Unit signal pad; 102. Grounding solder hole; 2. Channel signal line; 201. Outer sheath; 202. Aluminum foil; 203. Insulating sheath; 204. Core conductor; 205. Grounding wire; 3. Anti-crosstalk shield; 301. Cover; 302. Grounding foot; 303. Grounding connection wing. Detailed Implementation

[0028] Example: The following is combined with Figures 1-6 As shown, the specific implementation of the high-speed cable connector for preventing internal channel signal crosstalk provided by the present invention will be described below:

[0029] Depend on Figure 1 As can be seen, the high-speed cable connector described in this embodiment is a four-channel product. It is composed of a connector PCB board 1 housed within a casing (not shown in the figure) and four channel signal lines 2 connected to it. The connector PCB board 1 has signal pads 101 corresponding to each channel signal line 2. Similar to conventional products, its four signal pads 101 are arranged in a staggered pattern along the width of the connector PCB board 1. Figure 3 As shown. The structure of channel signal line 2 is the same as conventional technology, consisting of, from the inside out, the core conductor 204, the insulating sheath 203, the aluminum foil 202, and the outer sheath 201, as follows. Figure 4 As shown, each channel signal line 2 has a core conductor 204 exposed after the outer sheath 201, aluminum foil 202 and insulating sheath 203 are cut off in sequence. The exposed core conductor 204 is welded and fixed to the corresponding signal pad 101, and two grounding wires 205 are connected and led out on the aluminum foil 202.

[0030] Combination Figure 3 and Figure 4 As shown, in this embodiment, the core conductor 204 of the channel signal line 2 is two or more, and the corresponding signal pad 101 is composed of two unit signal pads 101a that correspond one-to-one with these core conductors 204 and are arranged side by side at intervals in the width direction of the PCB board 1.

[0031] Combined Figures 2-4 As shown, the core improvement of this invention is that each channel signal line 2 is provided with an anti-crosstalk shield 3 on the connector PCB board 1. This anti-crosstalk shield 3 is an integrally stamped and cast stainless steel anti-crosstalk shield, which has a cover body 301 that is horizontally arranged across the front of the channel signal line 2 and a grounding foot 302 connected to the bottom of the cover body 301. The cover body 301 at least completely covers the exposed core conductor 204 of the corresponding channel signal line 2 in the length direction. The grounding foot 302 is inserted into the grounding solder hole 102 provided on the connector PCB board 1 and welded and fixed. The two grounding wires 205 of the aluminum foil 202 are directly welded and fixed to the cover body 301.

[0032] Specifically, combine Figures 5-6 As shown, in this embodiment, the cover 301 is a U-shaped cover, with two grounding feet 302 integrally disposed on the two bottom edges of the U-shaped cover, one at the front and the other at the back. The two grounding feet 302 are respectively inserted into the two grounding solder holes 102 provided on the PCB board 1 and soldered in place. Furthermore, the two grounding solder holes 102 are respectively arranged side-by-side on the left and right sides of the corresponding signal pads 101, as shown in the diagram. Figure 3 As shown.

[0033] Combined Figure 2 , Figures 5-6 As shown, the two rear bottom edges of the U-shaped cover are bent outwards to form two ground connection wings 303. Two grounding wires 205 are respectively welded and fixed to the upper part of the two ground connection wings 303, and each ground connection wing 303 is disconnected from the grounding foot 302 at the front of its respective bottom edge. In this embodiment, both ground connection wings 303 are welded and fixed to the connection wing pads provided on the connector PCB board 1. Figure 3 (omitted) This not only ensures a more stable positioning of the anti-crosstalk shield 3, but also reduces the gap between the bottom edge of the U-shaped shield and the connector PCB board 1, enhancing the blocking effect.

[0034] The actual assembly steps of this invention are as follows:

[0035] 1. First, pre-set signal pads 101 and grounding pads 102 on the connector PCB according to the layout requirements, such as... Figure 3 As shown;

[0036] 2. Remove the outer sheath 201, aluminum foil 202, and insulating sheath 203 covering the core conductor 204 at the front end of the channel signal line 2, thereby exposing the core conductor 204. Figure 4 As shown;

[0037] 3. First, solder the exposed core conductor 204 to the corresponding signal pad 101 for fixation;

[0038] 4. Install the anti-crosstalk shield 3 corresponding to each channel signal line 2, with the shield 301 horizontally spanning the front of the channel signal line 2, ensuring that the shield 301 completely covers the exposed core conductor 204 at the front end of the corresponding channel signal line 2 in the length direction. The grounding pin 302 of the anti-crosstalk shield 3 is inserted into the grounding solder hole 102 provided on the connector PCB board 1, and the two grounding wires 205 of the aluminum foil 202 are respectively placed on the grounding connection wings 303 on both sides of the shield 301. Figure 2 As shown;

[0039] 5. Complete the welding and fixing of the grounding pins 302 of each anti-crosstalk shield 3 to the grounding solder holes 102 on the PCB board 1, then complete the welding and fixing of the ground wire connecting wing 303 to the connecting wing pad on the PCB board 1, and finally complete the welding and fixing of the grounding wire 205 of the aluminum foil 202 to the ground wire connecting wing 303 on the cover 301. The final product is as follows: Figure 1 As shown.

[0040] Because the high-speed cable connector of the present invention has a crosstalk shield 3 specially set on the PCB board 1 for each channel signal line 2, the cover 301 of the crosstalk shield 3 can completely cover the exposed core conductor 204 at the front end of the corresponding channel signal line 2 in the length direction, thereby effectively blocking the electromagnetic signal radiation of the exposed core conductor 204 at the front end of each channel signal line 2, greatly reducing the signal crosstalk between multiple channels inside the high-speed cable connector, and thus effectively improving the signal transmission performance and stability of this type of high-speed cable connector product, further adapting to the speed increase requirements of high-speed cables.

[0041] Furthermore, this invention significantly improves the crosstalk problem of internal channel signals without increasing the spacing of the internal signal pads 101. It does not require changing the layout of the multi-channel signal lines or reducing the number of channel signal lines 2, thus ensuring the integrity of the original multi-channel signal line layout of the high-speed cable connector. Simultaneously, it does not require shielding or reinforcing the structure of the channel signal lines 2 themselves, maintaining the original high-speed cable and improving compatibility with existing high-speed cables, thereby greatly saving on improvement costs.

[0042] Furthermore, due to the introduction of the anti-crosstalk shield 3, the grounding wire 205 of the aluminum foil 202 of the channel signal line 2 can be directly soldered and fixed to the anti-crosstalk shield 3, that is, grounding is completed by means of the anti-crosstalk shield 3. This avoids setting multiple grounding pads on the connector PCB board 1, which can reduce soldering steps and improve the soldering and assembly efficiency of this type of high-speed cable connector. The introduced anti-crosstalk shield 3 effectively compensates for the shielding function of the aluminum foil 202 on the front end of the core conductor 204 that was originally cut off. This anti-crosstalk shield 3 itself has a simple structure, such as... Figure 5 and Figure 6 As shown, it is easy to manufacture and assemble, which facilitates its application in other existing high-speed cable connectors.

[0043] Of course, the above are merely specific application examples of the present invention and do not constitute any limitation on the scope of protection of the present invention. In addition to the above embodiments, the present invention may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A high-speed cable connector for preventing internal channel signal crosstalk, comprising a connector PCB board (1) disposed within a housing and multiple channel signal lines (2) connected thereto, wherein the connector PCB board (1) is provided with signal pads (101) corresponding one-to-one with the channel signal lines (2), and each channel signal line (2) has a core conductor (204) exposed at its front end after the outer sheath (201), aluminum foil (202) and insulating sheath (203) have been sequentially cut off, the exposed core conductor (204) is soldered and fixed to the corresponding signal pad (101), and a grounding wire (205) is connected to the aluminum foil (202); characterized in that, The connector PCB (1) is also equipped with anti-crosstalk shields (3) for each channel signal line (2). The anti-crosstalk shields (3) include a cover (301) that is horizontally placed across the front of the channel signal line (2) and a grounding pin (302) connected to the bottom of the cover (301). The cover (301) completely covers the exposed core conductor (204) of the corresponding channel signal line (2) in the length direction. The grounding pin (302) is inserted into the grounding solder hole (102) provided on the connector PCB (1) and fixed by soldering. The grounding wire (205) of the aluminum foil (202) is directly soldered to the cover (301). The cover (301) is a U-shaped cover, and there are two grounding feet (302) on it, which are integrally set at the front position of the two bottom edges of the U-shaped cover. The two grounding feet (302) are respectively inserted into the two grounding solder holes (102) provided on the connector PCB board (1) and soldered and fixed. Two grounding wires (205) are connected to the aluminum foil (202) of each channel signal line (2), and the two bottom rear parts of the U-shaped cover are bent outward to form two grounding connection wings (303). The two grounding wires (205) are respectively welded and fixed to the upper part of the two grounding connection wings (303), and the grounding connection wings (303) are disconnected from the grounding feet (302) at the front of the bottom edge. Both ground connection wings (303) are welded and fixed to the connection wing pads provided on the connector PCB board (1).

2. A high-speed cable connector for preventing internal channel signal crosstalk according to claim 1, characterized in that, The two grounding solder holes (102) are respectively arranged side by side on the left and right sides of the corresponding signal solder pads (101).

3. A high-speed cable connector for preventing internal channel signal crosstalk according to claim 1, characterized in that, The signal pads (101) are arranged side by side or staggered in the width direction of the PCB board (1).

4. A high-speed cable connector for preventing internal channel signal crosstalk according to claim 1, 2, or 3, characterized in that, Each channel signal line (2) has two or more core conductors (204), and the corresponding signal pad (101) is composed of several unit signal pads (101a) that correspond one-to-one with these core conductors (204) and are arranged side by side at intervals in the width direction of the PCB board (1).

5. A high-speed cable connector for preventing internal channel signal crosstalk according to claim 1, characterized in that, The anti-crosstalk shield (3) is a copper anti-crosstalk shield or a stainless steel anti-crosstalk shield.

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