High-speed connector and cable assembly

Abstract

The invention discloses a high-speed connector and a cable assembly, and aims to solve the problems that a mounting nut of a traditional connector is easy to loosen, the impedance consistency is poor and the structure is unstable. The high-speed connector socket is of a bent rectangular structure, a base assembly is embedded in a metal base shell, a metal cover plate is fixed through small screws and abuts against the base assembly, and the metal cover plate is fixed to a panel through a small screw assembly and is separated from an installation nut assembly used for locking a plug. Nut loosening is avoided; the plug cable assembly is of a straight rectangular structure and comprises a connector plug, a digital cable and pouring sealant, A-type and B-type PCBs of the connector plug are welded with the digital cable and then installed on the head base and then embedded in the metal head shell, after the wire clamp shell is sleeved, the pouring sealant is solidified into a whole, and signal pairs of the B-type PCBs are arranged in a staggered mode relative to the A-type PCBs. Connection reliability and impedance consistency are improved, cost is reduced, and an external high-speed connection interface of a case or a module is adapted.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, and particularly relates to a high-speed connector and cable assembly. Background Technology

[0002] As electronic devices evolve towards higher integration and higher transmission rates, the demand for high-speed signal interconnection within and between devices is increasing. High-speed cable assemblies and high-speed I / O interface connectors have become key components for achieving reliable signal transmission. In typical applications, the connector socket end usually serves as the fixed end, needing to simultaneously secure it to the panel and lock it in place with the plug end. Traditional designs often use a single mounting nut to perform both functions—this nut is used to both fix the socket to the panel and lock it to the plug end. However, this design has a significant drawback: under long-term use or vibration, the mounting nut is prone to loosening due to the dual forces, leading to decreased stability of the plug-socket connection, which in turn causes signal transmission interruptions, poor contact, and other problems, seriously affecting the reliability of equipment operation.

[0003] Meanwhile, traditional high-speed connectors also face challenges in terms of transmission performance and cost control. On the one hand, to meet the impedance consistency requirements of high-speed signal transmission, some connectors adopt complex contact arrangement structures, which not only increases the difficulty of mold design and processing but also drives up the overall product cost. On the other hand, if the plug end directly uses the cable as the signal transmission carrier, it is prone to impedance fluctuations due to uneven cable core arrangement and irregular shielding, making it difficult to adapt to the stable transmission requirements of high-frequency signals. In addition, the assembly method of the connector components also affects its structural stability. For example, some components lack an effective integrated fixing design, which can easily lead to component displacement under insertion and removal operations or environmental stress, further reducing the reliability of the product. Therefore, it is urgent to optimize the structure of high-speed connectors and cable assemblies to solve technical pain points such as loose nuts, poor impedance consistency, high cost, and structural instability, and meet the usage requirements of high-speed connection interfaces of chassis or modules. Summary of the Invention

[0004] To address the problems in the prior art, the present invention proposes the following technical solution: A high-speed connector and cable assembly, comprising a high-speed connector socket and a plug cable assembly; The high-speed connector socket has a bent rectangular structure, including a metal housing, a base assembly, a metal cover plate, a mounting nut assembly, and small screws. The base assembly is embedded inside the metal housing. The metal cover plate is fixed to the rear end face of the metal housing by small screws, and the front end face of the metal cover plate presses against the base assembly to limit its axial displacement. The two mounting nut assemblies are symmetrically distributed at both ends of the metal housing and are only used to lock with the plug cable assembly. The high-speed connector socket is fixed to the panel by the small screw assembly, and the mounting nut assembly passes through the panel but is not connected to the panel, realizing the separation of the "panel mounting" and "plug locking" accessories. The plug-cable assembly has a straight rectangular structure, comprising a connector plug, multiple digital cables, and potting compound. The connector plug includes a metal head shell, a head base, a clamp shell, a type A PCB board, a type B PCB board, and a screw assembly. The type A and type B PCB boards are soldered to the digital cables, then inserted into the elongated rectangular cavity of the head base and limited by the cavity wall, before being integrally fitted into the rectangular cavity of the metal head shell. The clamp shell is inserted from the tail end of the digital cable, with its front end fitting against the tail end of the metal head shell. The potting compound fills the inside of the clamp shell, solidifying the clamp shell, the metal head shell, and the digital cables into a single unit. The signal pair positions on the type B PCB board are staggered relative to the signal pair positions on the type A PCB board along the width direction of the PCB board.

[0005] As a preferred embodiment of the above technical solution, the internal contact end of the high-speed connector socket has a fisheye structure, which is pressed and fitted with the signal hole of the PCB board through the fisheye; the outer side of the metal housing is provided with a guide boss, which is clearance-fitted with the positioning hole of the PCB board to achieve pre-positioning, and the metal housing is fixed to the PCB board by two screw assemblies.

[0006] As a preferred embodiment of the above technical solution, the panel has a trapezoidal hole, four mounting holes, and two through holes; the metal base housing passes through the trapezoidal hole, and the inner wall of the trapezoidal hole fits against the outer wall of the metal base housing; the two mounting nut assemblies pass through the two through holes respectively; the four small screw assemblies pass through the four mounting holes respectively, and cooperate with the threaded holes on the metal base housing to lock the high-speed connector socket to the panel.

[0007] As a preferred embodiment of the above technical solution, the A-type PCB board includes a substrate, a top layer signal line, a top layer ground line, and a bottom layer shielding layer; the signal lines are arranged in parallel pairs, and the ground line is long and symmetrically distributed on both sides of each pair of signal lines, forming a "ground line-signal pair-ground line" transmission unit; the two core wires of the digital cable are respectively soldered to a pair of signal lines, and the shielding ground line of the digital cable is soldered to the ground line on the corresponding side, forming an independent unit transmission link.

[0008] As a preferred embodiment of the above technical solution, the B-type PCB board includes a substrate, a top layer signal line, a top layer ground line, and a bottom layer shielding layer; the signal lines are arranged in parallel pairs, and the ground lines are distributed on both sides of each pair of signal lines, forming a transmission unit with the same structure as the A-type PCB board; and the transmission unit of the B-type PCB board is offset by 0.5-2mm along the length of the PCB board relative to the transmission unit of the A-type PCB board, achieving a staggered arrangement.

[0009] As a preferred embodiment of the above technical solution, the metal head housing includes a central rectangular flange, a front mating area, and a rear transition area; the rectangular flange has symmetrical stepped holes on both sides for mounting screw assemblies; the mating area is a trapezoidal boss extending from the front face of the flange, with a trapezoidal cavity inside the boss for guiding mating with the high-speed connector socket; the transition area is a rectangular boss extending from the rear face of the flange, with a rectangular cavity inside the boss and elongated anti-slip grooves on both outer sides.

[0010] As a preferred embodiment of the above technical solution, the screw assembly consists of a locking screw, a spring washer, a flat washer, and a retaining ring; the locking screw passes through the spring washer and the flat washer in sequence and is then inserted into the stepped hole, and the shank of the locking screw has an annular groove, the retaining ring is embedded in the annular groove, and the outer diameter of the retaining ring is larger than the minimum diameter of the stepped hole, thereby achieving axial fixation of the screw assembly on the metal head shell.

[0011] As a preferred embodiment of the above technical solution, the head base is a plastic injection molded part, with a connecting arm integrally formed in the middle of its front end face, and elongated rectangular cavities symmetrically opened on both sides of the connecting arm; a large rectangular cavity is opened in the middle of the rear end face of the head base, and annular potting steps are integrally formed on the outer walls of both long sides, the potting steps are used to engage with potting glue to improve the fixing strength.

[0012] As a preferred embodiment of the above technical solution, the wire clamp housing is a machined metal part, with a rectangular potting cavity in its central area. The inner wall of the potting cavity is integrally formed with an annular anti-slip step to prevent axial displacement of the potting compound. The front end of the wire clamp housing is integrally formed with a positioning boss, which cooperates with the positioning groove at the tail end of the metal head shell. Anti-slip grooves are formed in the middle of the outer end faces on both sides of the wire clamp housing, and annular mounting grooves are formed around the tail end for fixing the shielding mesh.

[0013] As a preferred embodiment of the above technical solution, the digital cable comprises, from the outside to the inside, an outer insulation layer, a shielding ground wire, a core wire insulation layer, and a core wire; the core wire insulation layer wraps around a single core wire, two core wires with core wire insulation layers are arranged in parallel, the shielding ground wire is wrapped around the outside of the core wire insulation layer, and the outer insulation layer wraps around the entire structure.

[0014] The beneficial effects of this invention are as follows: Firstly, regarding connection reliability, this invention separates the "panel mounting accessories" and "plug locking accessories" of the high-speed connector socket. Four small screw assemblies individually secure the socket to the panel, while two mounting nut assemblies are used only for locking the plug end and are not fixedly connected to the panel. This design completely avoids the loosening problem caused by dual forces in traditional single-nut designs, ensuring stable connection between the plug and socket under long-term use or vibration, significantly improving the product's connection reliability and lifespan. Simultaneously, the internal base assembly of the socket is physically protected by a metal housing, and a metal cover further secures the base assembly with small screws, effectively preventing displacement during insertion and removal, thus further enhancing the socket's structural stability.

[0015] Secondly, in terms of transmission performance, the plug cable assembly innovatively adopts both Type A and Type B PCB boards as signal transmission carriers. Both types of PCB boards are designed with a transmission unit structure of "substrate + top layer signal line + top layer ground line + bottom layer shielding layer," and the signal pairs on the Type B PCB board are staggered relative to those on the Type A PCB board. This design, on the one hand, significantly reduces crosstalk interference during signal transmission through orderly line layout and shielding layer settings; on the other hand, it makes the impedance characteristics more stable, adapting to the transmission requirements of high-frequency and high-speed signals, effectively solving the problem of large impedance fluctuations in traditional cable carriers, and meeting the performance requirements of equipment for high-speed signal transmission.

[0016] Furthermore, in terms of cost control and ease of assembly, the socket adopts a combined base and contact structure design, which simplifies the complexity of the mold, reduces mold development and processing costs, and lowers the overall manufacturing cost of the product. The socket contacts and PCB board are connected by a fisheye crimping method, and with the guide boss positioning of the metal base shell, the installation process of the socket and PCB board is simpler and more efficient, without the need for complicated debugging operations. The plug and cable assembly uses potting compound to solidify the wire clip shell, metal head shell and digital cable into an integrated structure, which not only simplifies the assembly process, but also enhances the waterproof and dustproof performance of the component and the overall structural strength, making it suitable for a variety of complex usage scenarios.

[0017] Finally, in terms of overall compatibility, the socket adopts a bent rectangular structure and the plug cable assembly adopts a straight rectangular structure. The structural design of both can accurately adapt to the installation space requirements of the chassis or module's external connection interface. Furthermore, the structural details of each component further enhance the product's ease of use and compatibility, enabling the product to be widely used in high-speed signal interconnection scenarios of various electronic devices. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating a real-world application scenario for high-speed connector sockets and plug cable assemblies. Figure 2 This is a schematic diagram of the overall structure of a high-speed connector socket; Figure 3 A schematic diagram of the high-speed connector socket and PCB board installation; Figure 4 This is a schematic diagram showing the installation of the high-speed connector socket and panel; Figure 5 This is a schematic diagram of the overall structure of the plug and cable assembly; Figure 6 This is a schematic diagram of the structure of the metal head shell on the plug in a plug-cable assembly. Figure 7 This is a schematic diagram of the head base on the plug in a plug-cable assembly; Figure 8 This is a schematic diagram of the wire clamp housing on the plug in the plug-cable assembly. Figure 9 A schematic diagram of the A-type PCB board structure on the plug in the plug-cable assembly and its soldering to the digital cable; Figure 10 A schematic diagram of the B-type PCB board structure on the plug of the plug cable assembly and its soldering with the digital cable; Figure 11 This is a schematic diagram of the screw assembly on the plug of a plug-cable assembly being assembled on both sides of the metal head housing. Figure 12 This is a schematic diagram showing the assembly sequence of the various parts of the plug cable assembly.

[0019] In the diagram: 1. High-speed connector socket; 2. Plug cable assembly; 3. PCB board; 4. Front panel; 5. Plug; 10. Metal housing; 11. Base assembly; 12. Metal cover plate; 13. Mounting nut assembly; 14. Small screw; 15. Screw assembly; 31. Positioning hole; 32. Signal hole; 10. Guide boss; 16. Small screw assembly; 40. Mounting hole; 41. Through hole; 42. Trapezoidal hole; 50. Metal head housing; 51. Head base; 52. Wire clamp housing; 53. Type A PCB board assembly; 54. Type B PCB. 54. Board assembly; 55. Screw assembly; 56. Potting compound; 57. Digital cable; 500. Flange; 501. Butt joint area; 502. Stepped hole; 5001. Trapezoidal cavity; 5010. Rectangular cavity; 5020. Anti-slip groove; 5021. Connecting arm; 510. Long rectangular cavity; 511. Rectangular cavity; 512. Potting step; 513. Rectangular potting cavity; 520. Positioning boss; 521. Anti-slip groove; 522. Mounting groove; 523. Anti-slip step; 5201. Type A PCB board; 53. Substrate portion; 530. Signal line; 531. Ground line; 532. Shielding layer; 533. Outer insulation layer; 571. Core wire; 572. Shielded ground wire; 573. Core wire insulation layer; 574. Type B PCB board. Board 54; Substrate 540; Signal line 541; Ground line 542; Shielding layer 543; Locking screw 550; Spring washer 551; Flat washer 552; Snap ring 553. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0021] Example See Figure 1 This is a schematic diagram illustrating the actual use scenario of the high-speed connector socket 1 and plug cable assembly 2 according to a preferred embodiment of the present invention. The high-speed connector socket 1 has a bent rectangular structure. Its internal contacts are connected to the PCB board 3 via a fisheye crimping method. Its outer shell is locked with two screw assemblies to ensure reliable connection and fixation between the socket 1's outer shell and the PCB board 3. It is locked to the panel 4 with four small screw assemblies to achieve mutual positioning of the socket 1, panel 4, and PCB board 3. The plug cable assembly 2 has a straight rectangular structure. Its mating end plug 5 is mated and locked to the high-speed connector socket 1, and its tail end connects to the data cable. The plug cable assembly 2 is a movable end, assembled and used according to the actual usage scenario.

[0022] See Figure 2This is a schematic diagram of the overall structure of the high-speed connector socket 1 according to a preferred embodiment of the present invention. The socket 1 is an external interface type, crimp-mounted high-speed connector with a bent rectangular structure, consisting of a metal housing 10, a base assembly 11, a metal cover plate 12, two mounting nut assemblies 13, and four small screws 14. The base assembly 11 is located inside the metal housing 10 and is protected by it. The metal cover plate 12 is fixed by the four small screws 14 corresponding to the four threaded holes on the rear end face of the metal housing 10. The four small screws 14 are evenly distributed at the four corners of the metal cover plate 12, ensuring a reliable connection between the metal cover plate 12 and the metal housing 10 while ensuring that the front end of the metal cover plate 12 is evenly pressed against the rear end of the base assembly 11, preventing displacement of the base assembly 11 due to uneven force. The two sets of mounting nut assemblies 13 are symmetrically distributed at both ends of the metal housing 10 for locking and fixing with the mating plug.

[0023] See Figure 3 This is a schematic diagram of the installation of the high-speed connector socket 1 and the PCB board 3 according to a preferred embodiment of the present invention. The high-speed connector socket 1 is inserted perpendicularly to the PCB board 3. The guide boss 103 on the metal housing 10 first guides and positions itself with the positioning hole 31 on the PCB board 3. Then, the fisheye on the high-speed connector socket 1 is aligned with the signal hole 32 and pressed into the hole by a press-fitting tool. Finally, two screw assemblies 15 are used to lock the socket in place by engaging with the two mounting threaded holes on both sides of the metal housing 10. The two screw assemblies 15 are symmetrically distributed on the middle of both sides of the metal housing 10, forming a triangular positioning structure with the guide boss 103. This ensures that the press-fit high-speed connector socket 1 and the PCB board 3 are fixed without loosening, thus achieving reliable installation of the two.

[0024] See Figure 4This is a schematic diagram illustrating the installation of the high-speed connector socket 1 and the panel 4 according to a preferred embodiment of the present invention. A large trapezoidal hole 42 is machined on the panel 4, with four mounting holes 40 and two through holes 41 symmetrically distributed on both sides. When the high-speed connector socket 1, assembled onto the PCB board 3, is inserted from the rear side of the panel 4, its metal housing 10 passes through the trapezoidal hole 42, and the two mounting nut assemblies 13 pass through the two through holes 41 respectively. Then, four small screw assemblies 16 pass through the four mounting holes 40 of the panel 4 respectively, and engage with the four corresponding threaded holes on the front end face of the metal housing 10 for locking. The four small screw assemblies 16 are divided into two groups, with two in each group located on both sides of the trapezoidal hole 42. Through the evenly distributed four-point fixing, a stable connection between the high-speed connector socket 1 and the panel 4 is achieved, completing the installation. The fixing of the high-speed connector socket 1 and the panel 4 uses the aforementioned four independent small screw assemblies 16, which are functionally separate from the two mounting nut assemblies 13 used for plug locking. Therefore, the mounting nut assemblies 13 will not loosen when locked with the screws on the plug cable assembly 2.

[0025] See Figure 5 This is a schematic diagram of the overall structure of the plug-cable assembly 2 according to a preferred embodiment of the present invention. The plug-cable assembly 2 has a straight rectangular structure and consists of a straight connector plug 5, multiple digital cables 57, and a certain amount of potting compound 56. The straight connector plug 5 includes a metal head shell 50, a head base 51, a wire clamp shell 52, an A-type PCB board assembly 53, a B-type PCB board assembly 54, and two sets of screw assemblies 55. The two sets of screw assemblies 55 are assembled on both sides of the metal head shell 50 and are used to lock and fix it with two sets of mounting nut assemblies 13 on the mating end high-speed connector socket 1. The head base 51 positions and fixes the A-type PCB board assembly 53 and the B-type PCB board assembly 54 to each other, and then assembles them as a whole inside the metal head shell 50. The wire clamp shell 52 is inserted from the tail end of the digital cable 57 and fits and adheres tightly to the metal head shell 50. Then, potting compound 56 is injected into its interior to fix all parts together, realizing the assembly of the plug-cable assembly 2.

[0026] See Figure 6This is a schematic diagram of the structure of the metal head shell 50 on the plug 5 of the plug cable assembly 2 according to a preferred embodiment of the present invention. The metal head shell 50 is a rectangular metal structure, machined and formed, and consists of three areas: a rectangular flange 500 in the middle, a mating area 501 at the front end, and a transition area 502 at the rear end. The rectangular flange 500 has stepped holes 5001 on both sides for assembling the screw assembly 55. The mating area 501 at the front end is a trapezoidal boss extending from the middle of the flange 500 to the front end, and its interior contains a trapezoidal cavity 5010 for accommodating other parts. The transition area 502 at the rear end is a rectangular boss extending from the middle of the flange 500 to the rear end, and its interior contains a rectangular cavity 5020 for assembling other parts. Its exterior has elongated anti-slip grooves 5021 on both sides.

[0027] See Figure 7 This is a schematic diagram of the head base 51 on the plug 5 in the plug cable assembly 2 according to a preferred embodiment of the present invention. The head base 51 is a plastic rectangular structure, which is injection molded. The middle of its front end face is a connecting arm 510 structure, and two long rectangular cavities 511 are provided on both sides to accommodate the A-type PCB board assembly 53 and the B-type PCB board assembly 54. The middle part of the rear end face of the head base 51 is a large rectangular cavity 512. The outer walls on both sides of the long side are provided with potting steps 513 for potting, which can also play a role in limiting and fixing.

[0028] See Figure 8 This is a schematic diagram of the wire clamp housing 52 on the plug 5 of the plug cable assembly 2 according to a preferred embodiment of the present invention. The wire clamp housing 52 is a metal rectangular structure, machined, with a large rectangular potting cavity 520 in the middle, mainly used to accommodate the digital cable 57 and potting compound 56. The cavity has anti-slip steps 5201 to prevent axial displacement of the potting compound 56 within it. The front end of the wire clamp housing 52 has a positioning boss 521 for mounting and positioning with the metal head shell 50. The middle of the outer end faces on both sides has anti-slip grooves 522 to facilitate docking and insertion / removal of the plug cable assembly 2. The rear end has mounting grooves 523 around its perimeter for fixing the shielding mesh.

[0029] See Figure 9This is a schematic diagram illustrating the structure of the A-type PCB board 53 on the plug 5 of the plug cable assembly 2 and its soldering with the digital cable 57, according to a preferred embodiment of the present invention. The A-type PCB board 53 comprises four parts: a substrate 530, a top layer of signal lines 531 and ground lines 532, and a bottom layer of shielding 533. The top layer of signal lines 531 are grouped in pairs, with ground lines 532 distributed on both sides, forming a transmission unit. The A-type PCB board 53 contains multiple such transmission units for high-speed signal transmission. The digital cable 57 consists of two identical core wires 572, a core wire insulation layer 574, a shielding ground line 573, and an outer insulation layer 571. Each digital cable 57 is connected to one transmission unit on the A-type PCB board 53; that is, the core wire 572 is connected to the signal line 531 on the A-type PCB board 53, and the shielding ground line 573 is connected to the ground line 532 on the A-type PCB board 53, forming a unit transmission link. One A-type PCB board 53 can be soldered with multiple digital cables 57 to form multiple unit transmission links.

[0030] See Figure 10 This is a schematic diagram of the structure of the B-type PCB board 54 on the plug 5 of the plug cable assembly 2 and its welding with the digital cable 57, as shown in a preferred embodiment of the present invention. The B-type PCB board 54 is structurally similar to the A-type PCB board 53, and also includes four parts: a substrate 540, a top layer of signal lines 541 and ground lines 542, and a bottom layer of shielding 543. The top layer of signal lines 541 are grouped in pairs, with ground lines 542 distributed on both sides, forming a transmission unit. The position of the transmission unit is offset by 0.5-2mm along the length of the PCB board relative to the position of the transmission unit on the A-type PCB board 53, achieving precise misalignment. This misalignment design can be achieved by the preset offset amount of the PCB board circuit layout, which can effectively avoid signal coupling paths of different rows of transmission links, significantly reduce signal interference between different rows of transmission links, and thus obtain low crosstalk electrical performance indicators. Each digital cable 57 is connected to a transmission unit on the B-type PCB board 54, that is, the core wire 572 is connected to the signal line 541 on the B-type PCB board 54, and the shielded ground wire 573 is connected to the ground wire 542 on the B-type PCB board 54, forming a unit transmission link. A B-type PCB board 54 contains multiple such unit transmission links.

[0031] See Figure 11This is a schematic diagram illustrating the structure of the screw assembly 55 on the plug 5 of the plug cable assembly 2, assembled on both sides of the metal head housing 50, according to a preferred embodiment of the present invention. The screw assembly 55 consists of a locking screw 550, a spring washer 551, a flat washer 552, and a retaining ring 553. Each metal head housing 50 is equipped with two screw assemblies 55, located in the stepped holes 5001 on both sides of the flange 500 of the metal head housing 50. The retaining ring 553 engages with the groove on the locking screw 550 to achieve axial fixation, and to fix the spring washer 551 and the flat washer 552 to the metal head housing 50.

[0032] See Figure 12 This is a schematic diagram illustrating the assembly sequence of the components of the plug-cable assembly 2 according to a preferred embodiment of the present invention. Two sets of screw assemblies 55 are assembled on both sides of the metal head housing 50 for locking and fixing with two sets of mounting nut assemblies 13 on the high-speed connector socket 1 at the mating end. The A-type PCB board 53 and B-type PCB board 54, with the digital cable 57 soldered on, are inserted from the rear end of the head base 51 into the elongated rectangular cavity 511 thereon and are limited thereon, and then assembled as a whole into the rectangular recess 5020 on the metal head housing 50; then the wire clamp housing 52 is inserted from the tail end of the digital cable and made to fit tightly against the tail end of the metal head housing 50; finally, by potting an appropriate amount of potting compound 56, the wire clamp housing 52, the metal head housing 50 and the digital cable 57 are fixed into a whole structure, completing the assembly of the plug-cable assembly 2.

[0033] The high-speed connector socket 1 involved in this invention has a bent structure. Its internal contacts are connected to the PCB board by a fisheye crimping method. Its outer shell is locked to the PCB board by two screw assemblies. It is designed separately from the panel mounting and the accessories for locking the mating plug, which solves the problem of nut loosening during use. It is suitable for external connection interfaces of chassis or modules.

[0034] The plug and cable assembly 2 of the present invention uses type A and type B PCB boards as transmission carriers, and improves impedance consistency through optimized signal line arrangement to meet high-speed transmission requirements.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A high-speed connector and cable assembly, characterized in that, Includes a high-speed connector socket (1) and a plug cable assembly (2); The high-speed connector socket (1) is a bent rectangular structure, including a metal base shell (10), a base assembly (11), a metal cover plate (12), a mounting nut assembly (13), and small screws (14); the base assembly (11) is embedded inside the metal base shell (10), the metal cover plate (12) is fixed to the rear end face of the metal base shell (10) by small screws (14), and the front end face of the metal cover plate (12) presses against the base assembly (11) to limit its axial displacement; the two mounting nut assemblies (13) are symmetrically distributed at both ends of the metal base shell (10) and are only used to lock with the plug cable assembly (2); the high-speed connector socket (1) is fixed to the panel (4) by small screw assembly (16), and the mounting nut assembly (13) passes through the panel (4) but is not connected to the panel (4), realizing the separation of the accessories of "panel mounting" and "plug locking"; The plug cable assembly (2) has a straight rectangular structure and includes a connector plug (5), multiple digital cables (57), and potting compound (56). The connector plug (5) includes a metal head shell (50), a head base (51), a wire clamp shell (52), a type A PCB board (53), a type B PCB board (54), and a screw assembly (55). The type A PCB board (53) and type B PCB board (54) are also included. After the board (54) is welded to the digital cable (57), it is installed into the long rectangular cavity (511) of the head base (51) and limited by the cavity wall, and then the whole is embedded in the rectangular cavity (5020) of the metal head shell (50); the wire clamp shell (52) is inserted from the tail end of the digital cable (57), and its front end is attached to the tail end of the metal head shell (50). The potting compound (56) is filled in the inside of the wire clamp shell (52) to solidify the wire clamp shell (52), the metal head shell (50) and the digital cable (57) into a whole; the signal pair positions on the B-type PCB board (54) are staggered along the width direction of the PCB board relative to the signal pair positions on the A-type PCB board (53).

2. The high-speed connector and cable assembly according to claim 1, characterized in that, The internal contact end of the high-speed connector socket (1) has a fisheye structure and is fitted with the signal hole (32) of the PCB board (3) by fisheye crimping; the outer side of the metal housing (10) is provided with a guide boss (103), the guide boss (103) is fitted with the positioning hole (31) of the PCB board (3) to achieve pre-positioning, and the metal housing (10) is fixed to the PCB board (3) by two screw assemblies (15) threaded connection.

3. The high-speed connector and cable assembly according to claim 1, characterized in that, The panel (4) has a trapezoidal hole (42), four mounting holes (40) and two through holes (41); the metal base housing (10) passes through the trapezoidal hole (42) and the inner wall of the trapezoidal hole (42) fits against the outer wall of the metal base housing (10); the two mounting nut assemblies (13) pass through the two through holes (41) respectively; the four small screw assemblies (16) pass through the four mounting holes (40) respectively and cooperate with the threaded holes on the metal base housing (10) to lock the high-speed connector socket (1) to the panel (4).

4. The high-speed connector and cable assembly according to claim 1, characterized in that, The type A PCB board (53) includes a substrate (530), a top layer signal line (531), a top layer ground line (532), and a bottom layer shielding layer (533). The signal lines (531) are arranged in pairs in parallel. The ground line (532) is long and symmetrically distributed on both sides of each group of signal lines (531), forming a "ground line-signal pair-ground line" transmission unit. The two core wires (572) of the digital cable (57) are respectively soldered to a group of signal lines (531), and the shielding ground line (573) of the digital cable (57) is soldered to the ground line (532) on the corresponding side, forming an independent unit transmission link.

5. The high-speed connector and cable assembly according to claim 4, characterized in that, The B-type PCB (54) includes a substrate (540), a top-layer signal line (541), a top-layer ground line (542), and a bottom-layer shielding layer (543). The signal lines (541) are arranged in pairs in parallel, and the ground lines (542) are distributed on both sides of each pair of signal lines (541), forming a transmission unit with the same structure as the A-type PCB (53). The transmission unit of the B-type PCB (54) is offset by 0.5-2mm along the length of the PCB relative to the transmission unit of the A-type PCB (53), achieving a staggered arrangement.

6. The high-speed connector and cable assembly according to claim 1, characterized in that, The metal head housing (50) includes a middle rectangular flange (500), a front mating area (501), and a rear transition area (502); the rectangular flange (500) has stepped holes (5001) symmetrically opened on both sides for mounting screw assemblies (55); the mating area (501) is a trapezoidal boss extending from the front face of the flange (500), and a trapezoidal cavity (5010) is opened inside the boss for docking and guiding with the high-speed connector socket (1); the transition area (502) is a rectangular boss extending from the rear face of the flange (500), and a rectangular cavity (5020) is opened inside the boss, and long strip-shaped anti-slip grooves (5021) are opened on both sides of the outside.

7. The high-speed connector and cable assembly according to claim 6, characterized in that, The screw assembly (55) consists of a locking screw (550), a spring washer (551), a flat washer (552), and a retaining ring (553). The locking screw (550) passes through the spring washer (551) and the flat washer (552) in sequence and is then inserted into the stepped hole (5001). The shank of the locking screw (550) has an annular groove. The retaining ring (553) is embedded in the annular groove, and the outer diameter of the retaining ring (553) is larger than the minimum diameter of the stepped hole (5001), thereby achieving axial fixation of the screw assembly (55) on the metal head shell (50).

8. The high-speed connector and cable assembly according to claim 1, characterized in that, The head base (51) is a plastic injection molded part. A connecting arm (510) is integrally formed in the middle of its front end face. Long rectangular cavities (511) are symmetrically opened on both sides of the connecting arm (510). A large rectangular cavity (512) is opened in the middle of the rear end face of the head base (51). An annular potting step (513) is integrally formed on the outer wall of both sides of the long side. The potting step (513) is used to engage with the potting glue (56) to improve the fixing strength.

9. The high-speed connector and cable assembly according to claim 1, characterized in that, The wire clamp housing (52) is a machined metal part, with a rectangular potting cavity (520) in the middle area. The inner wall of the potting cavity (520) is integrally formed with an annular anti-slip step (5201) to prevent the potting glue (56) from axial displacement. The front end of the wire clamp housing (52) is integrally formed with a positioning boss (521), which cooperates with the positioning groove at the tail end of the metal head shell (50). Anti-slip grooves (522) are provided in the middle of the outer end faces on both sides of the wire clamp housing (52), and annular mounting grooves (523) are provided around the tail end for fixing the shielding mesh.

10. The high-speed connector and cable assembly according to claim 1, characterized in that, The digital cable (57) includes, from the outside to the inside, an outer insulation layer (571), a shielding ground wire (573), a core wire insulation layer (574), and a core wire (572). The core wire insulation layer (574) wraps around a single core wire (572), and two core wires (572) with core wire insulation layers (574) are arranged in parallel. The shielding ground wire (573) surrounds the outside of the core wire insulation layer (574), and the outer insulation layer (571) wraps around the entire structure.

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