A multi-channel signal connector and assembly thereof

Abstract

The utility model discloses a kind of multi-channel signal connector and its assembly, the multi-channel signal connector includes insulating rubber core, signal terminal array, wire harness assembly, shielding shell and ground piece. Insulating rubber core includes plug connector and terminal block, terminal block is provided with mounting groove;Signal terminal array is fixed on plug connector, with electrical contact part, anti-drop fixed part and welding portion;Wire harness assembly includes coaxial line matched with signal terminal one by one, core wire is welded and fixed with welding portion;Shielding shell cover is located in terminal block bottom surface, and is electrically connected with coaxial line shielding layer;Ground piece is integrally covered in the end of plug connector both ends, forms physical protection to end part, simultaneously electrically connected with shielding shell, and contact conduction with board end socket grounding structure in the process of plugging. The utility model is integrated with end protection, plugging guide, locking cooperation and grounding conduction etc. Multiple functions, effectively reduce the wear of insulating rubber core, while shielding performance is good, and versatility is strong.

Description

Technical Field

[0001] This utility model belongs to the field of electrical connector technology, and in particular relates to a multi-channel signal connector and its assembly. Background Technology

[0002] Multi-channel signal connectors are key interface components in electronic devices that enable signal transmission between circuit boards and external wiring harnesses, and are widely used in communication equipment, consumer electronics, automotive electronics, and industrial control. Among them, the wire-to-board connector (BTCC connector) is a common type of multi-channel signal connector, typically consisting of two main parts: a board-end connector and a wire-end connector. Through the mating of the wire-end connector and the board-end connector, synchronous transmission of multiple signals and shielding grounding functions are achieved (e.g., the connector device in patent CN109755782B). With the miniaturization and high-density development of electronic devices, higher requirements are placed on the mating accuracy, assembly efficiency, and universal compatibility of connectors. However, existing technologies still have shortcomings in the following aspects:

[0003] 1. Existing wire-to-board connectors mainly use direct plastic-to-plastic mating between the wire end and the board end. This requires high mating accuracy and lacks a robust and wear-resistant mating guide structure, making it impossible to achieve "blind mating" within a large tolerance range. Moreover, the lack of effective protection on the plastic parts makes the insulating core prone to collision and wear during the mating process, affecting the reliability and service life of the product.

[0004] 2. The grounding component of existing wire-to-board connectors is usually integrally formed on the shielding housing. During assembly, the shielding housing needs to be installed vertically so that the grounding component on the shielding housing passes vertically through the through hole on the insulating core. After the shielding housing is completely covered on the insulating core, the overlapping arm on the shielding housing is bent with a tool to make the overlapping arm engage with the protrusion on the side of the insulating core to complete the fixation. This assembly method is complicated, time-consuming, and has a high overall production cost.

[0005] 3. Existing wire-to-board connectors can usually only be used with specific board end sockets and cannot be adapted to universal board-to-board connector females, resulting in poor product compatibility and limiting the scope of applications. Utility Model Content

[0006] The purpose of this invention is to provide a multi-channel signal connector and its assembly to solve the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A multi-channel signal connector includes an insulating core, a signal terminal array, a wire harness assembly, a shielding housing, and a grounding component. The insulating core includes a connector for mating with a board-end socket and a terminal block integrally formed at the bottom of the connector. The terminal block has a mounting groove for accommodating wiring. The signal terminal array includes a plurality of signal terminals fixed to the connector. Each signal terminal has an electrical contact portion exposed on the connector surface for signal transmission, an anti-detachment fixing portion embedded inside the insulating core, and a solder portion extending into the mounting groove. The wiring harness assembly includes coaxial cables in a number that matches the number of signal terminals. The core wires of the coaxial cables are housed in the mounting groove and welded to the corresponding signal terminal to achieve electrical conductivity. The shielding housing is installed on the bottom surface of the terminal block and is electrically connected to the shielding layer of the coaxial cables. The grounding component is completely covered at both ends of the connector, providing physical protection to the connector ends. At the same time, the grounding component is also electrically connected to the shielding housing and can make contact with the grounding structure of the board socket during the insertion process.

[0009] Furthermore, the terminal block is provided with a boss and a buckle on both sides along the width direction; one side of the shielding shell is formed with an overlapping part, which fits against the outer surface of the boss; the other side of the shielding shell is formed with a fastening part, which engages with the buckle elastic snap of the terminal block to lock and fix the shielding shell and the insulating core together.

[0010] Furthermore, the boss is located on the side of the terminal block away from the coaxial cable outlet, and the outer edge of the boss is rounded; the fastening part is correspondingly arranged on the side close to the coaxial cable, and is symmetrically arranged on both sides along the length direction of the terminal block.

[0011] Furthermore, the connector is enclosed by two oppositely arranged long side walls and two oppositely arranged short side walls to form a rectangular connector frame structure; the signal terminals on one long side wall are evenly spaced along the length of the connector, and the signal terminals on the two long side walls are arranged in a staggered manner in the width direction of the connector.

[0012] Furthermore, the grounding component is integrally formed with the insulating core using an insert injection molding process and fully covers the outside of the short side end wall; the grounding component includes a top surface protection part covering the top surface of the short side end wall, side surface protection parts covering both sides of the short side end wall, an end surface protection part covering the outer end face of the short side end wall, and a conductive solder foot extending into the insulating core and exposed on the surface of the terminal block; the shielding shell has a second welding hole corresponding to the position of the conductive solder foot, and the conductive solder foot passes through the second welding hole and is welded and fixed to the shielding shell.

[0013] Furthermore, the end face protection part of the grounding component is a guide slope with a certain taper, which can correct the alignment deviation when the connector is plugged in, reducing the difficulty of plugging in.

[0014] Furthermore, positioning slots are provided on both sides of the protective portion of the grounding component. The positioning slots can engage with the corresponding elastic contact arms on the board end socket to enhance the locking and retaining force after the engagement.

[0015] Furthermore, the soldered portions of all the signal terminals are arranged at equal intervals on the same horizontal mounting surface within the mounting groove.

[0016] Furthermore, the shielding layers of each coaxial line are welded together into a single conductive structure by conductive fasteners; at least one first welding hole is provided on the shielding shell, the first welding hole corresponds to the position of the conductive fastener, and the conductive fastener is welded and fixed to the shielding shell through the first welding hole.

[0017] This utility model also provides a connector assembly, including a multi-channel signal connector and a board-end socket, wherein the board-end socket is a board-to-board connector female, and the multi-channel signal connector and the board-to-board connector female are pluggable and detachable.

[0018] Compared with the prior art, the beneficial technical effects of the multi-channel signal connector and its assembly provided by this utility model are as follows:

[0019] 1. The grounding component simultaneously performs multiple functions, including physical protection of the connector end, connector guidance and correction, and connector locking and retention. This improves the structural strength and wear resistance of the insulating core end, significantly extending the product's service life. Furthermore, the grounding component is welded to the shielding shell via welding holes, enabling electrical connection with the grounding structure of the board-end socket after connection. This establishes a complete grounding path from the coaxial shielding layer through the shielding shell and grounding component to the board-end socket grounding structure, achieving whole-machine grounding.

[0020] 2. By setting bosses and buckles on the terminal blocks of the insulating core, and cooperating with the corresponding overlapping and snap-fit ​​parts on the shielding shell, rapid pre-positioning of the shielding shell and tool-free elastic snap-locking are achieved. The entire assembly process requires no additional bending steps or special tools, making operation convenient, effectively shortening assembly time, and improving assembly efficiency.

[0021] 3. The guide slope on the protective section of the grounding component end face provides correction guidance during insertion, enabling blind insertion within a certain tolerance range and reducing operational difficulty. Simultaneously, the positioning slot on the side of the grounding component engages with the elastic contact arm of the board-to-board connector female, providing clear insertion feedback and reliable locking force to prevent loosening due to vibration and ensure long-term connection stability.

[0022] 4. The grounding component and shielding structure design eliminates the need for a special board-end socket for the wire-end connector, allowing it to be directly adapted to universal board-to-board connector females of the corresponding size and number of terminals, thus exhibiting excellent versatility. Attached Figure Description

[0023] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of a multi-channel signal connector provided for an embodiment of this utility model. Figure 1 ;

[0025] Figure 2 A schematic diagram of the structure of a multi-channel signal connector provided for an embodiment of this utility model. Figure 2 ;

[0026] Figure 3 A schematic diagram of the signal terminal arrangement of a multi-channel signal connector provided for an embodiment of this utility model;

[0027] Figure 4 An exploded view of a multi-channel signal connector provided in an embodiment of this utility model;

[0028] Figure 5 A schematic diagram illustrating the assembly method of the shielding housing in a multi-channel signal connector provided for an embodiment of this utility model;

[0029] Figure 6 A schematic diagram of the structure of a mid-plate end socket in an assembly provided by an embodiment of this utility model;

[0030] Figure 7 A schematic diagram of the overall structure of an assembly provided in an embodiment of this utility model;

[0031] Figure 8 An edge of a multi-channel signal connector provided for embodiments of this utility model Figure 4 A sectional view of section line AA in the diagram;

[0032] Figure 9 A cross-sectional view along the BB section line of a multi-channel signal connector provided for an embodiment of this utility model;

[0033] Figure 10 This is a cross-sectional view along the CC section line of a multi-channel signal connector provided for an embodiment of the present invention.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1-Insulating core, 11-Plug, 111-Long side wall, 112-Short side end wall, 12-Terminal, 121-Mounting groove, 122-Boss, 123-Undercut;

[0036] 2-Signal terminal, 21-Electrical contact, 22-Anti-detachment fixing part, 23-Soldering part;

[0037] 3-Wire harness assembly, 31-Coaxial cable, 311-Core wire, 312-Shielding layer, 32-Conductive fastener;

[0038] 4-Shielding shell, 41-Overlapping part, 42-Snap-fitting part, 43-First welding hole, 44-Second welding hole;

[0039] 5-Grounding component, 51-Top surface protection part, 52-Side protection part, 521-Positioning slot, 53-End face protection part, 54-Conductive welding foot;

[0040] 6-Plate-end socket, 61-Insulating base, 62-Matching terminal, 63-Protective hardware, 631-Resilient contact arm, 64-Island structure. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0042] like Figures 1 to 5 As shown, this embodiment of the present invention provides a multi-channel signal connector, including an insulating core 1, a signal terminal array 2, a wire harness assembly 3, a grounding component 5, and a shielding housing 4. Specifically:

[0043] In this embodiment, the insulating core 1 serves as the main supporting body of the connector, integrally injection molded from insulating plastic material. Its top is a connector 11 for mating with the board-end socket 6, and its bottom is a terminal block 12 for constraining and organizing the arrangement path of the wire harness assembly 3. The connector 11 is formed by two opposing and parallel long sidewalls 111 and two opposing and parallel short sidewalls 112 enclosing a rectangular insertion frame structure. This rectangular insertion frame structure is hollow inside, accommodating the central island structure 64 protruding from the center of the board-end socket 6, thus achieving alignment and insertion with the board-end socket 6. The terminal block 12 is integrally formed on the non-plug end of the connector 11, serving as the load-bearing area for wire harness assembly and shielding structure. The bottom of the terminal block 12 has a recessed mounting groove 121. The groove's dimensions are adapted to accommodate multiple sets of coaxial cables 31, allowing for orderly storage and controlled installation, preventing messy wire harness arrangement. To enable quick and stable locking with the shielding housing 4, improving assembly convenience and structural stability, the terminal block 12 is further integrally formed on both sides along its width direction with a boss 122 and a buckle 123 for mounting the shielding housing 4. The boss 122 is located on the side of the terminal block 12 away from the coaxial cable 31 outlet, with a rounded outer edge. The buckle 123 is correspondingly located on the side of the terminal block 12 closest to the coaxial cable 31 outlet, and there are two buckles 123 symmetrically arranged along the length of the terminal block 12 to ensure even force distribution.

[0044] The signal terminal 2 array includes a plurality of signal terminals 2, which are integrally stamped and bent from metal strip, and all signal terminals 2 are fixed to the connector 11 of the insulating core 1 by insert injection molding. Each signal terminal 2 has an electrical contact portion 21, an anti-detachment fixing portion 22, and a welding portion 23. The anti-detachment fixing part 22 is embedded inside the insulating core 1 to ensure that the signal terminal 2 will not detach from the insulating core 1 due to force during repeated insertion and removal. The electrical contact part 21 is exposed on the surface of the long side wall 111 of the connector 11 and is used to contact the corresponding mating terminal 62 in the board socket 6 in the plugged state to realize high-frequency signal transmission. The welding part 23 is formed by the anti-detachment fixing part 22 extending outward from the inside of the insulating core 1 and is exposed in the mounting groove 121 of the terminal block 12 for connection with the wire harness assembly 3. The welding parts 23 of all signal terminals 2 are equally spaced on the same horizontal mounting surface inside the mounting groove 121, so that the position and height of each welding point are consistent, which facilitates the uniform welding operation of the core wire 311 of the coaxial cable 31, reduces the difficulty of the assembly process, and ensures the consistency of welding. In terms of arrangement, the signal terminals 2 on the long side wall 111 of one side are evenly spaced along the length of the connector 11. The signal terminals 2 on the two long side walls 111 are arranged in a staggered manner in the width direction of the connector 11. That is, the signal terminals 2 on one long side wall 111 are aligned with the middle position of the gap between two adjacent signal terminals 2 on the other long side wall 111 in the width direction, thus forming a compact multi-channel signal transmission structure. This staggered arrangement structure reduces the overall size while effectively ensuring the spacing between adjacent signal channels, weakening crosstalk interference between signals, improving the stability and accuracy of multi-channel signal synchronous transmission, and adapting to multi-channel high-frequency signal transmission scenarios.

[0045] The wiring harness assembly 3 includes coaxial cables 31 in number, matching the number of signal terminals 2. All coaxial cables 31 are arranged at equal intervals and housed within the mounting slots 121 of the terminal block 12. After the insulation layer of each coaxial cable 31 is removed, the exposed core wires 311 are welded one-to-one with the welding portions 23 of the signal terminals 2, ensuring reliable electrical conduction between the core wires 311 and the signal terminals 2, guaranteeing a smooth signal transmission path. Simultaneously, the outer shielding layers 312 of all coaxial cables 31 are uniformly welded into a single conductive structure via conductive fasteners 32, forming an integrated shielding loop. These conductive fasteners 32 connect all the shielding layers 312 of the coaxial cables 31 into a common grounding node, providing a unified connection point for subsequent connection to the shielding housing 4. This effectively resists external electromagnetic interference and suppresses its own signal radiation interference, further improving the anti-interference capability and transmission quality of multi-channel signal transmission.

[0046] In this embodiment, the grounding component 5 is an integral metal stamping part, which is embedded in the outer side of the short end wall 112 at both ends of the connector 11 using an insert injection molding process, and completely covers the short end wall 112. The grounding component 5 includes a top protective part 51, a side protective part 52, an end protective part 53, and a conductive solder foot 54. The top protective part 51 completely covers the top surface of the short end wall 112, the side protective parts 52 completely cover the two side walls of the short end wall 112, and the end protective part 53 completely covers the outer end face of the short end wall 112, forming a complete metal protective structure that completely covers the outer side of the short end wall 112 at both ends of the connector 11. This provides all-round physical protection for the ends of the connector 11, effectively preventing wear, chipping, and cracking of the plastic ends during repeated plugging and unplugging of the connector, and significantly improving the product's service life. The conductive solder foot 54 of the grounding component 5 extends into the insulating core 1 and eventually protrudes and is exposed on the outer surface of the terminal block 12. It can be fixed and connected to the shielding shell 4 by welding, so as to achieve a reliable electrical connection between the grounding component 5 and the shielding shell 4.

[0047] Meanwhile, the end face protection portion 53 of the grounding component 5 is configured as a tapered guide slope. When the connector is inserted into the board end socket 6, this guide slope can contact and slide with the entrance edge of the board end socket 6, correcting the alignment deviation between the connector and the socket, and guiding the plug 11 smoothly into the board end socket 6. In addition, the side protection portions 52 on both sides of the grounding component 5 are also provided with positioning slots 521. After insertion, the positioning slots 521 can engage with the elastic contact arms 631 of the board end socket 6, providing clear tactile feedback of insertion into place. Furthermore, relying on the clamping force of the elastic contact arms 631, a locking force can be provided after insertion, preventing the connector from becoming loose or having poor contact due to vibration or accidental pulling, thus ensuring connection reliability.

[0048] In this embodiment, the shielding shell 4 is a metal stamping structure that covers and mounts the bottom surface of the terminal block 12, providing all-around shielding for the wire harness welding area inside the terminal block 12 and isolating internal and external electromagnetic interference. One side of the shielding shell 4 has an overlapping portion 41, and the other side has a fastening portion 42. During assembly, the overlapping portion 41 is first overlapped with the boss 122 of the terminal block 12 to achieve pre-positioning; then, the other side of the shielding shell 4 is completely closed, and the fastening portion 42, relying on its own elastic deformation, crosses the inverted buckle 123 and resets, thus locking and fixing the shielding shell 4 to the insulating core 1.

[0049] The shielding housing 4 has at least one first welding hole 43 and at least one second welding hole 44. The position of the first welding hole 43 corresponds to the position of the conductive fixing member 32, and the position of the second welding hole 44 corresponds to the position of the conductive solder foot 54 of the grounding member 5. After the shielding layer 312 of the coaxial line 31 is welded together by the conductive fixing member 32, the conductive fixing member 32 is welded to the shielding housing 4 through the first welding hole 43, thereby realizing the electrical connection between the shielding layer 312 of the coaxial line 31 and the shielding housing 4. The conductive solder foot 54 of the grounding member 5 is aligned with the second welding hole 44 and exposed at the bottom of the terminal block 12. The grounding member 5 can be welded to the shielding housing 4 through the second welding hole 44, thereby realizing reliable electrical conduction between the grounding member 5 and the shielding housing 4. In the plug-in state, the grounding member 5 can make contact with the grounding structure of the board end socket 6, thereby constructing a complete grounding path from the shielding layer 312 of the coaxial line 31 through the shielding housing 4, the grounding member 5 to the grounding structure of the board end socket 6.

[0050] In addition, such as Figures 6 to 10 As shown, this utility model also provides a connector assembly, which includes the aforementioned multi-channel signal connector and a board-end socket 6 that mates with it. In this embodiment, the board-end socket 6 is a board-to-board connector female socket, which is soldered onto the circuit board and includes an insulating base 61, an array of mating terminals 62 disposed on the insulating base 61, and two sets of protective hardware 63 wrapped around both ends of the insulating base 61. The protective hardware 63 is fixedly connected to the corresponding grounding pad on the circuit board by surface mount soldering and achieves electrical conductivity. Each set of protective hardware 63 also includes a pair of elastic contact arms 631 that can elastically abut against the grounding component 5.

[0051] The multi-channel signal connector can be plugged into the board-to-board connector socket via its connector 11. When the two are plugged in, the signal terminal 2 array and the mating terminal 62 array in the board-to-board connector socket make contact one-to-one to achieve signal transmission. At the same time, the positioning slots 521 on the protective parts 52 on both sides of the grounding component 5 can engage with the elastic contact arms 631 of the protective hardware 63. After the elastic contact arms 631 are engaged in the positioning slots 521, they rely on their own elasticity to reset and provide clamping and locking force, ensuring the contact conduction and mechanical locking between the grounding component 5 and the grounding structure of the board end socket 6. This forms a complete grounding path from the coaxial line 31 shielding layer 312 through the conductive fixing component 32, the shielding shell 4, the grounding component 5, and the protective hardware 63, all the way to the grounding pad of the circuit board, realizing the whole-machine grounding of the connector system.

[0052] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-channel signal connector, characterized in that, include: The insulating core (1) includes a plug (11) for plugging and fitting into the board end socket (6) and a terminal block (12) integrally formed on the bottom of the plug (11), wherein the terminal block (12) is provided with a mounting groove (121) for accommodating the wiring. The signal terminal (2) array includes a plurality of signal terminals (2) fixed on the plug (11). The signal terminals (2) have an electrical contact (21) exposed on the surface of the plug (11) for signal transmission, an anti-detachment fixing part (22) embedded in the insulating core (1), and a welding part (23) extending out into the mounting groove (121). The wiring harness assembly (3) includes coaxial cables (31) in number that match the number of signal terminals (2). The core wires (311) of the coaxial cables (31) are housed in the mounting groove (121) and welded to the welding part (23) of the corresponding signal terminal (2) to achieve electrical conduction. A shielding housing (4) is installed on the bottom surface of the terminal block (12), and the shielding housing (4) is electrically connected to the shielding layer (312) of the coaxial line (31); The grounding component (5) is completely covered at both ends of the connector (11), forming physical protection for the ends of the connector (11); at the same time, the grounding component (5) is also electrically connected to the shielding shell (4), and can make contact with the grounding structure of the board end socket (6) during the plugging process.

2. A multi-channel signal connector according to claim 1, characterized in that, The terminal block (12) is provided with a boss (122) and a buckle (123) on both sides along the width direction; one side of the shielding shell (4) is formed with an overlapping part (41), which overlaps the outer surface of the boss (122), and the other side of the shielding shell (4) is formed with a fastening part (42), which is elastically engaged with the buckle (123) of the terminal block (12) to lock and fix the shielding shell (4) and the insulating core (1) together.

3. A multi-channel signal connector according to claim 2, characterized in that, The boss (122) is located on the side of the terminal block (12) away from the coaxial line (31) and the outer edge of the boss (122) is rounded. The fastening part (42) is arranged on the side close to the coaxial line (31) and is symmetrically arranged on both sides along the length direction of the terminal block (12).

4. A multi-channel signal connector according to claim 1, characterized in that, The connector (11) is enclosed by two oppositely arranged long side walls (111) and two oppositely arranged short side walls (112) to form a rectangular connector frame structure; each signal terminal (2) on one side long side wall (111) is evenly arranged at equal intervals along the length direction of the connector (11), and the signal terminals (2) on the two side walls (111) are arranged in a cross-staggered manner in the width direction of the connector (11).

5. A multi-channel signal connector according to claim 4, characterized in that, The grounding component (5) is integrally formed with the insulating core (1) using an insert injection molding process and is fully covered on the outside of the short side end wall (112). The grounding component (5) includes a top surface protection part (51) covering the top surface of the short side end wall (112), a side protection part (52) covering both sides of the short side end wall (112), an end surface protection part (53) covering the outer end face of the short side end wall (112), and a conductive solder foot (54) extending into the insulating core (1) and exposed on the surface of the terminal block (12). The shielding shell (4) has a second welding hole (44) corresponding to the position of the conductive solder foot (54). The conductive solder foot (54) passes through the second welding hole (44) and is welded and fixed to the shielding shell (4).

6. A multi-channel signal connector according to claim 5, characterized in that, The end face protection part (53) of the grounding component (5) is a guide slope with a certain taper, which can correct the alignment deviation when the connector is plugged in, and reduce the difficulty of plugging in.

7. A multi-channel signal connector according to claim 6, characterized in that, The grounding component (5) is provided with positioning slots (521) on both sides of the protective part (52). The positioning slots (521) can be engaged with the corresponding elastic contact arm (631) on the plate end socket (6) to improve the locking force after the engagement.

8. A multi-channel signal connector according to claim 1, characterized in that, The solder portions (23) of all the signal terminals (2) are arranged at equal intervals on the same horizontal mounting surface within the mounting groove (121).

9. A multi-channel signal connector according to claim 8, characterized in that, The shielding layers (312) of each coaxial line (31) are welded together into a single conductive structure by a conductive fastener (32); at least one first welding hole (43) is provided on the shielding shell (4), the first welding hole (43) corresponds to the position of the conductive fastener (32), and the conductive fastener (32) is welded and fixed to the shielding shell (4) through the first welding hole (43).

10. A connector assembly, characterized in that, The device includes a board-end socket (6) and a multi-channel signal connector as described in any one of claims 1 to 9, wherein the board-end socket (6) is a board-to-board connector female socket, and the multi-channel signal connector is pluggable and detachable from the board-to-board connector female socket.

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