Cable Connector and High-Speed Cable Connector Assembly

Abstract

The present invention relates to a cable connector and a high-speed cable connector assembly. The high-speed cable connector assembly includes a cable connector and a PCB board. The cable connector includes: a housing; a terminal module, of which at least two are provided. The terminal modules are inserted into the housing along the front-to-back direction. Each terminal module includes an insulating base and a plurality of shielded cable assemblies arranged in the insulating base along a first direction. The front end of each shielded cable assembly has a contact end extending forward from the housing. The plurality of terminal modules are arranged in the housing along a second direction perpendicular to the first direction. The PCB board is fixedly connected to the cable connector by screws so that the contact end and the PCB board are in stable elastic contact and conduction. By means of the above technical solution, the contact end of the cable connector of the present invention adopts an LGA spring-type structure to achieve elastic contact and conduction with the PCB board. The connection form is simple and the connection state is more stable, which is conducive to the stable transmission of high-speed signals.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-speed connectors, and in particular relates to a cable connector and a high-speed cable connector assembly. Background Art

[0002] Currently, in the field of high-speed cable connector technology, shielding structures on both sides are used to shield high-speed cables and the terminals connected to them. The envelopment of such shielding structures is difficult to meet the high-speed performance of the connector, and poor shielding effect is not conducive to the transmission of high-speed signals. In addition, the terminal end surface of the high-speed cable connector assembly connected to the PCB board generally adopts a fisheye structure. The fisheye structure is crimped with the corresponding holes on the PCB board to achieve the connection between the cable connector and the PCB board. With the development of technology, the size of the connector is getting smaller and smaller, and the fisheye structure is also getting smaller and smaller. If the fisheye crimping method is still used to achieve the connection with the PCB board, it is not conducive to structural stability, and the method or process of achieving a reliable connection is relatively complicated, which also reduces the assembly efficiency of the cable connector and the PCB board. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the present invention provides a cable connector and a high-speed cable connector assembly.

[0004] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions. The cable connector proposed in the present invention comprises:

[0005] case;

[0006] There are more than two terminal modules, which are inserted into the shell along the front-to-back direction. Each terminal module includes an insulating base and a plurality of shielded cable assemblies arranged in the insulating base along a first direction. The front end of each shielded cable assembly has a contact end extending forward from the front end surface of the shell and used for elastic contact and conduction with the PCB board. Multiple terminal modules are stacked and arranged in the shell along a second direction perpendicular to the first direction.

[0007] Furthermore, the housing is provided with a plurality of mounting grooves for mounting corresponding shielded cable assemblies along a first direction, each shielded cable assembly comprising a cable, a shielding shell, and a terminal, the terminal being mounted in the shielding shell through an insulator, two terminals being provided in each insulator, the front end of the terminal being the contact end, and the two terminals forming a differential pair; the cable comprising a cable insulation layer, an inner conductor disposed in the cable insulation layer, a shielding layer disposed outside the cable insulation layer, and a shielding sheet riveted to the outer side of the front end of the shielding layer, the front end of the cable being riveted to the shielding shell through the shielding sheet, and the inner conductor being connected to the terminal end correspondingly;

[0008] The terminal module also includes a shielding buckle plate, which is buckled on the insulating base and covers all shielding shells in the same terminal module. The shielding buckle plate is in contact and conductive with each shielding shell.

[0009] Furthermore, positioning protrusions are symmetrically provided on both sides of the insulator, and positioning grooves cooperating with the positioning protrusions are opened on both sides of the shielding shell.

[0010] Furthermore, the positioning protrusions between adjacent insulators in the same terminal module are connected to each other to form a connecting arm, which is clamped in the corresponding positioning groove of the adjacent shielding shell; a through groove is provided on the ribs between adjacent mounting grooves, and the connecting arm between adjacent insulators also falls into the corresponding through groove, and the connecting arm and the through groove are blocked and matched in the front-to-back direction.

[0011] Furthermore, the shielding sheet includes a shielding sheet main body extending forward and backward, the front end of the shielding sheet main body extends and bends to both sides to form a pair of riveted main bodies, the riveted main bodies are arc-shaped sheet structures, and the riveted main bodies are used to contact and cooperate with the outer surface of the shielding layer; the rear end of the shielding sheet main body extends and bends to both sides to form a pair of riveted branch parts, the riveted branch parts are used to tighten the shielding layer, and there is a gap between the riveted main body and the riveted branch parts.

[0012] Furthermore, an injection molded body is provided at the rear end of the insulating base, the injection molded body is integrally connected to the insulating base, the injection molded body wraps the connection between the cable and the terminal, and the injection molded body relatively fixes the insulating base and the shielded cable assembly.

[0013] Furthermore, the shell is connected from front to back, and a conductive plastic plate is fixed inside the front end of the shell; after the terminal module is installed in the shell, the front end faces of all shielding shells in each terminal module are in contact with the conductive plastic plate; a shielding cavity is opened on the conductive plastic plate to accommodate the contact ends of each differential pair, and the front end of the shielding cavity is open so that the contact ends can extend forward.

[0014] Furthermore, a shielding mesh is fixedly provided on the end surface of the conductive plastic board facing the PCB board, and the shielding mesh is provided with signal terminal avoidance holes corresponding to the differential pairs. The shielding mesh is also provided with grounding spring pins protruding toward the PCB board, and the grounding spring pins are used to connect to the grounding structure on the PCB board.

[0015] Furthermore, the signal terminal avoidance holes and grounding spring pins provided in each row on the shielding mesh plate are arranged alternately.

[0016] High-speed cable connector assembly, including a cable connector and a PCB board, the cable connector includes:

[0017] case;

[0018] There are more than two terminal modules, which are inserted into the shell along the front-to-back direction. Each terminal module includes an insulating base and several shielded cable assemblies arranged in the insulating base along a first direction. The front end of each shielded cable assembly has a contact end extending forward from the shell. Multiple terminal modules are arranged in the shell along a second direction perpendicular to the first direction; the PCB board is fixedly connected to the cable connector by screws so that the contact end and the PCB board are in stable elastic contact and conduction.

[0019] Furthermore, a plurality of mounting grooves for installing corresponding shielded cable assemblies are provided on the shell along a first direction. Each shielded cable assembly includes a cable, a shielding shell and a terminal. The terminal is installed in the shielding shell through an insulator. Two terminals are provided in each insulator. The front end of the terminal is the contact end, and the two terminals form a differential pair; the cable includes a cable insulation layer, an inner conductor provided in the cable insulation layer, a shielding layer provided outside the cable insulation layer, and a shielding sheet riveted to the outside of the front end of the shielding layer. The front end of the cable is riveted to the shielding shell through the shielding sheet, and the inner conductor is correspondingly connected to the wiring end of the terminal; the terminal module also includes a shielding buckle plate, which is buckled on the insulating base. The shielding buckle plate covers all shielding shells in the same terminal module, and the shielding buckle plate is in contact and conductive with each shielding shell.

[0020] Furthermore, positioning protrusions are symmetrically provided on both sides of the insulator, and positioning grooves cooperating with the positioning protrusions are opened on both sides of the shielding shell.

[0021] Furthermore, the positioning protrusions between adjacent insulators in the same terminal module are connected to each other to form a connecting arm, which is clamped in the corresponding positioning groove of the adjacent shielding shell; a through groove is provided on the ribs between adjacent mounting grooves, and the connecting arm between adjacent insulators falls into the corresponding through groove, and the connecting arm and the through groove are blocked and matched in the front-to-back direction.

[0022] Furthermore, the shielding sheet includes a shielding sheet main body extending forward and backward, the front end of the shielding sheet main body extends and bends to both sides to form a pair of riveted main bodies, the riveted main bodies are arc-shaped sheet structures, and the riveted main bodies are used to contact and cooperate with the outer surface of the shielding layer; the rear end of the shielding sheet main body extends and bends to both sides to form a pair of riveted branch parts, the riveted branch parts are used to tighten the shielding layer, and there is a gap between the riveted main body and the riveted branch parts.

[0023] Furthermore, an injection molded body is provided at the rear end of the insulating base, the injection molded body is integrally connected to the insulating base, the injection molded body wraps the connection between the cable and the terminal, and the injection molded body relatively fixes the insulating base and the shielded cable assembly.

[0024] Furthermore, the shell is connected from front to back, and a conductive plastic plate is fixed inside the front end of the shell; after the terminal module is installed in the shell, the front end faces of all shielding shells in each terminal module are in contact with the conductive plastic plate; a shielding cavity is opened on the conductive plastic plate to accommodate the contact ends of each differential pair, and the front end of the shielding cavity is open so that the contact ends can extend forward.

[0025] Furthermore, a shielding mesh is fixedly provided on the end surface of the conductive plastic board facing the PCB board, and the shielding mesh is provided with signal terminal avoidance holes corresponding to the differential pairs. The shielding mesh is also provided with grounding spring pins protruding toward the PCB board, and the grounding spring pins are used to connect to the grounding structure on the PCB board.

[0026] Furthermore, the signal terminal avoidance holes and grounding spring pins provided in each row on the shielding mesh plate are arranged alternately.

[0027] By means of the above technical solution, the beneficial effect of the present invention is that the contact end of the cable connector of the present invention adopts an LGA spring structure to achieve elastic contact and conduction with the PCB board, the connection form is simple and the connection state is more stable, which is conducive to the stable transmission of high-speed signals.

[0028] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the cable connector in the present invention.

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of the high-speed cable connector assembly in the present invention.

[0031] Figure 3 It is a three-dimensional diagram of the terminal module in the present invention.

[0032] Figure 4 It is an exploded schematic diagram of the terminal module in the present invention.

[0033] Figure 5 This is an explosion diagram of the terminal module of the present invention when it does not contain an injection molded body.

[0034] Figure 6 It is a schematic diagram of the connection between the cable and the shielding shell in the present invention.

[0035] Figure 7 It is a schematic diagram of the elastic contact and conduction between the contact ends of the differential pair and the PCB board in the present invention.

[0036] Figure 8It is a schematic diagram of the front-end structure of the cable in the present invention.

[0037] Figures 9A to 9B It is a structural diagram of the shielding sheet in the present invention.

[0038] Figure 10 It is an exploded schematic diagram of the lock and the housing in the present invention.

[0039] Figure 11 It is a schematic diagram of the structural coordination relationship among the lock, housing, conductive plastic plate and terminal module in the present invention.

[0040] Figure 12 It is a three-dimensional diagram of the lock buckle in the present invention.

[0041] Figure 13 It is a three-dimensional diagram of the housing in the present invention.

[0042] Figure 14 It is a schematic diagram of the matching relationship between the lock and the terminal module in the present invention.

[0043] Figure 15 This is a cross-sectional diagram showing the latch mating with the terminal module when inserted into the locked position.

[0044] Figure 16 yes Figure 15 Enlarged view of part A.

[0045] Figure 17 It is a schematic diagram of the shielding mesh plate in the present invention.

[0046] Figure 18 It is a bottom view of the cable connector of the present invention.

[0047] Figure 19 Schematic diagram of the positional relationship between the contact ends of the differential pair and the grounding spring pins of adjacent rows in the second direction in the present invention. DETAILED DESCRIPTION

[0048] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0049] For an embodiment of a high-speed cable connector assembly, see Figures 1 to 18 , including a cable connector 1 and a PCB board 2, where the end where the cable connector is connected to the PCB board is defined as the front end.

[0050] The cable connector 1 includes a housing 11 and a plurality of terminal modules 12. The plurality of terminal modules 12 are arranged along a first direction within a receiving cavity 110 of the housing 11 and inserted forwardly into the housing's receiving cavity in a plug-in manner along a front-to-back direction. Each terminal module 12 includes an insulating base 121, a shielding plate 122, and a plurality of shielded cable assemblies 123 arranged in a second direction within the insulating base. In this embodiment, each insulating base 121 is provided with a mounting slot 1211 for accommodating a corresponding shielded cable assembly, with four mounting slots spaced apart along the second direction. The first and second directions are perpendicular to each other, and the planes containing the first and second directions are parallel to the surface of the PCB. The first direction represents the width of the terminal modules, and the second direction represents the thickness of the terminal modules. Therefore, the terminal modules are arranged in a stacked manner within the housing in the thickness direction.

[0051] The shielded cable assembly 123 includes a cable 1231, a shielding shell 1232, a terminal 1233 and an insulator 1234, wherein the terminal 1233 is fixed in the insulator 1234; the terminal is specifically connected to the insulator in the form of an insert by integral injection molding, and two terminals 1233 are arranged in parallel and at intervals in each insulator. The two terminals form a differential pair 1230 for transmitting high-speed signals, and the differential pair is positioned in a corresponding shielding shell 1232 through the insulator. Shielding shell 1232 is a U-shaped sheet structure with open front, rear, and top sections, forming a U-shaped cavity. In this embodiment, positioning slots 12321 are defined on both sides of shielding shell 1232, and positioning protrusions 12341 are provided on the sides of insulator 1234 to engage with the positioning slots. Furthermore, the positioning protrusions of adjacent insulators within the same terminal module are interconnected to form connecting arms 12342, which snap into position within positioning slots 12321. This allows multiple insulators within a terminal module to form a single, integrated insulator, facilitating batch installation of shielded cable assemblies and ensuring consistent front-to-back distances between each differential pair, particularly improving the coplanarity of the ends of all differential pairs mating with the PCB. Terminal 1233, from front to back, comprises a contact end 12331, a fixed section, and a terminal 12332. The fixed section is embedded within the insulator, while the contact end protrudes from the front of the shielding shell. In this embodiment, the contact end adopts a spring-type contact end, and the contact end is a C-shaped spring. The present invention adopts this LGA spring structure to achieve elastic contact and conduction with the PCB board, which not only has stronger connection reliability and can adapt to complex working conditions, but also has a convenient connection and conduction form.

[0052] Cable 1231 includes a shielding sheet 12311, a shielding layer 12312, a cable insulation layer 12313, and inner conductors 12314 disposed within the cable insulation layer. The inner conductors are arranged in pairs, corresponding one-to-one with the two contact ends of the differential pair. The cable insulation layer is integrally molded in one piece, which facilitates cable stability control and enables complex processes such as foaming. The cable insulation layer and the inner conductor are integrally injection molded to achieve relative fixation. The inner conductor is stably fixed within the cable insulation layer as an insert, preventing the paired inner conductors from moving relative to each other and affecting high-speed performance. A shielding layer 12312 is provided on the outside of the cable insulation layer; the shielding sheet 12311 is riveted to the front end of the shielding layer 12312. In this embodiment, the cross-section of the cable insulation layer is elliptical, so that the two inner conductors can be spaced apart within it along the long axis of the ellipse. The inner conductor passes through the cable insulation layer from the front end of the cable, and the inner conductor 12314 is welded to the terminal terminal 12332 in a one-to-one correspondence. After welding, UV glue 12315 is applied to the welding position, and the UV glue is cured to achieve sealing protection.

[0053] Combine Figure 9A 、 Figure 9B The shielding sheet 12311 comprises a main portion 123111 extending forward and backward. The front end of the main portion extends and bends to form a pair of riveted main portions 123112. The riveted main portion has an arc-shaped, sheet-like structure and is used to contact and mate with the outer surface of the shielding layer. The riveted main portion is responsible for the large-area contact with the shielding layer, ensuring the stability of the shielding conductivity. The rear end of the main portion extends and bends to form a pair of riveted branches 123113. The riveted branches are used to clamp the shielding layer 12312 and secure the shielding layer. A gap 123114 is defined between the riveted main portion and the riveted branches, facilitating independent riveting during the riveting process and preventing mutual interference. A comparison shows that after the shielding sheet is riveted, the radial distance between the active ends of the two riveted branches is greater than that of the active ends of the two riveted main portions. This ensures greater contact area between the riveted main portion and the shielding layer while also ensuring a stronger riveting effect for the riveted branches. Of course, the riveted main body can also play a certain role in riveting and fixing, and the riveted branch parts can also play a certain role in shielding and conducting.

[0054] The shielding shell 1232 and shielding plate 12311 are riveted together. In this embodiment, first riveting claws 12321 are symmetrically positioned on either side of the rear end of the shielding shell 1232. The first riveting claws are used to rivet the outer wall of the riveted main body of the shielding plate. To strengthen the riveted connection between the high-speed cable and the shielding shell and increase the number of contact points, second riveting claws 12322 are also symmetrically positioned at the rear end of the shielding shell. The second riveting claws are formed by extending and bending the rear end surface of the shielding shell backwards. The second riveting claws are riveted to the riveted branch. The first riveting claws are formed by extending and bending the end surface of the rear end of the shielding shell facing the shielding plate 122 (i.e., the upper end surface) toward the interior of the shielding shell. After the cable is secured, the bottom of the shielding plate 12311 contacts the bottom surface of the inner wall of the shielding shell. To ensure a large surface contact, the movable end of the riveted main body is designed to be flat. After the shielding shell and cable are riveted relative to each other, the shielding shell forms a three-sided shielding for the cable. After the shielded cable assembly is placed in the mounting slot, the shielding plate 122 is fastened to the insulating base 121. The shielding plate 122 covers all shielding shells 1232 in the same terminal module and contacts the upper end surface of each shielding shell 1232, thereby achieving full shielding at the connection between the cable and the terminal and common grounding for each shielding shell in the same terminal module. In this embodiment, the shielding plate 122 is provided with a fixing hole 1221, and the insulating base 121 is provided with a fixing protrusion 1212 that fits the fixing hole to ensure the installation and positioning of the shielding plate and its reliable contact with the shielding shell. To improve the reliability of the connection between the shielding shell and the shielding plate, laser welding technology can also be used to weld the upper end surface of the shielding shell to the contact area of the shielding plate.

[0055] An injection molded body 124 is provided at the rear end of the insulating base 121, and the injection molded body 124 is integrally connected to the insulating base 121, and is used to plastic-seal and fix the tail of the shielded cable assembly. The injection molded body wraps the front end of the cable and accommodates the shielding sheet inside it. The injection molded body fixes the insulating base and the front end of the cables arranged in a row as a whole, thereby realizing the assembly and positioning of the shielded cable assembly. In addition, a through groove 1214 is provided on the rib 1213 between adjacent mounting grooves on the insulating base 121, and the connecting arm 12342 between adjacent insulators falls into the through groove 1214. The two are blocked and matched in the front-to-back direction, and the assembly and positioning of the shielded cable assembly in the front-to-back direction can also be realized.

[0056] The housing 11 is continuous from front to back. A conductive plastic plate 13 is fixed to the front of the housing 11. This plate is rigidly fitted to the housing. When multiple terminal modules 12 are installed within the housing 11, the front surfaces of all shielding shells 1232 within each terminal module contact this plate 13, thereby achieving a common ground for all shielding shells. The plate 13 defines a shielding cavity 131 that accommodates the contact terminals of each differential pair. This cavity 131 is open at the front, providing shielding isolation between the differential pairs and reducing crosstalk. A shielding mesh plate 14 is fixedly provided on the end surface of the conductive plastic plate 13 facing the PCB board. The shielding mesh plate 14 is provided with multiple snap-in protrusions (not shown in the figure), and the conductive plastic plate 13 is provided with corresponding snap-in recesses (not shown in the figure). The snap-in protrusions and the snap-in recesses are strongly fitted together to achieve a fixed connection and stable contact and conduction between the shielding mesh plate and the conductive plastic plate; that is, the fixing form of the shielding mesh plate and the conductive plastic plate is similar to that of the shielding buckle plate and the insulator seat, but the snap-in protrusions should be on the outside of the shielding mesh plate near the edge.

[0057] The shielding mesh 14 is provided with signal terminal holes 141 corresponding to the differential pairs 1230. This allows the contacts of each differential pair to pass through the corresponding signal terminal holes and electrically connect to the PCB after the shielding mesh is installed on the front face of the cable connector. The shielding mesh 14 is also provided with grounding springs 142 that protrude toward the PCB and are used to connect to the grounding structure on the PCB. This invention utilizes the grounding springs to bridge the gap between the shielding mesh and the PCB, enhancing the shielding effect.

[0058] In this embodiment, adjacent terminal modules 12 are staggered in the first direction, and multiple terminal modules are arranged in an S-shaped staggered arrangement in the second direction; correspondingly, the signal terminal avoidance holes 141 in two adjacent rows are also staggered in the first direction. Figure 18 In the first direction, the grounding pins 142 and the signal terminal avoidance holes 141 in the same row are arranged alternately, and both outer sides in the first direction are provided with grounding pins. In the second direction, because the differential pairs in adjacent rows are offset in the first direction, the contact ends of each differential pair have grounding pins on at least one side in the second direction. For example, the contact ends of the differential pairs in the topmost or bottommost row each have an adjacent grounding pin in the second direction, so the contact ends of these two rows of differential pairs have grounding pins on three sides for shielding grounding. In contrast, the contact ends of each differential pair in the middle row have directly adjacent grounding pins on both sides, so the contact ends of the differential pairs in the middle row have grounding pins on all four sides: top, bottom, left, and right. This design improves the crosstalk resistance between adjacent rows of differential pairs.

[0059] Furthermore, the projection of the grounding spring pin on one side of the contact end of the differential pair in the second direction in the second direction is located within the outer width range of the contact end of the corresponding differential pair; that is, Figure 19In the example, L1 (the projection of the grounding spring pin in the second direction) is smaller than L2 (the width of the differential pair's contact end in the first direction). With this structural design, the grounding spring pins and differential pairs are arranged in a GSSGSSGSSG pattern in the first direction on the front face of the cable connector. In the second direction, each differential pair has at least one adjacent grounding spring pin on one side of its contact end, effectively reducing crosstalk at the contact ends between differential pairs in different terminal modules.

[0060] In order to facilitate the rapid insertion of each terminal module, the receiving cavity 110 of the shell 11 includes a plurality of slots 111 arranged along the second direction. Adjacent slots 111 are offset in the first direction, and the offset is less than the width of a differential pair. Limiting steps 1111 are provided on both sides of the slot 111 at positions close to the conductive plastic plate. The limiting steps are provided with guide grooves 1112 extending in the front-to-back direction. Correspondingly, matching limiting surfaces 1215 that cooperate with the limiting steps in the forward direction are provided on both sides of the insulating base 121, as well as guide ribs 1216 located in front of the matching limiting surfaces and extending in the front-to-back direction. The guide ribs and the guide grooves guide and cooperate in the front-to-back direction. Furthermore, in order to prevent the terminal module from falling out backward, a lock buckle 15 is used to lock each terminal module 12 in the front-to-back direction. As shown Figure 10The housing 11 has symmetrical locking slots 112 extending perpendicularly to the front-to-back direction, i.e., the locking slots extend parallel to the planes of the first and second directions. Two locking latches 15 are provided, each corresponding to a corresponding locking slot. The locking latches are inserted into the slots within the housing through their corresponding locking slots. The insertion and removal directions of the locking latches are perpendicular to the insertion direction of the terminal module. A locking slot 1217 is provided on each side of the insulating base 121. A locking arm 151 extends from the side of the locking latch 15 facing the housing, which engages with the corresponding locking slot. The locking arm extends along the width direction (i.e., the first direction) of the terminal module. During installation, the terminal modules are inserted into the corresponding slots. To ensure reliable contact between the shielding shell and the conductive plastic plate, each terminal module can be slightly pressed toward the front end. When the matching limit surface abuts the limit step, the shielding shell and the conductive plastic plate are in slight interference contact. Then, the two locks are inserted from both sides of the shell, so that each locking arm 151 passes through the corresponding lock slot on the side of the shell and enters the lock slot 1217 of the corresponding terminal module, thereby locking and fixing both sides of each terminal module to prevent the terminal module from moving in the front and back directions. This type of terminal module fixing method is conducive to improving assembly efficiency. All terminal modules can be fixed at one time. Since there is no need to set an additional locking structure on the terminal module, the production cost is greatly reduced, and it is conducive to the miniaturized design of the cable connector structure. Each locking arm matches the lock slot on one side of a terminal module, and the adjacent locking arms on the same lock are of different lengths to adapt to the staggered installation of the terminal modules. Furthermore, in order to fix the lock after being inserted into the lock slot, the lock arm 151 is provided with a strong mounting protrusion 152, which is relatively distributed on both sides of the lock arm. The strong mounting protrusion 152 and the inner wall of the through hole 1121 of the lock slot 112 are interference fit (such as Figure 15 ), the vias extend along the first direction and communicate with the slots, and the number of vias is the same as the number of locking arms. The two locks have the same structure and can be mass-produced during production. When inserted into the housing for locking, one can be installed in the correct position and the other in the reverse position.

[0061] In this embodiment, one of the two adjacent terminal modules is installed upright and the other is installed reversely, so that the spring structures of the two adjacent rows of contact ends are bent in opposite directions, avoiding the unstable connection state caused by the reaction force in the same direction when the contact ends are bent in one direction and elastically contact the PCB board, thereby facilitating stable contact and conduction between the cable connector and the PCB board.

[0062] In this embodiment, the PCB board 2 and the cable connector 1 are connected by screws 3. Nuts are embedded in the side of the housing. The screws 3 pass through the mounting holes on the PCB board and lock with the corresponding nuts, locking the cable connector to the surface of the PCB board, realizing surface-mount short-link transmission.

[0063] Example of cable connector:

[0064] The cable connector is the cable connector 1 described in the above-mentioned embodiment of the high-speed cable connector assembly, and will not be described in detail here.

[0065] The above description is only a preferred embodiment of the present invention, and any parts not described in detail are all prior art; any simple modifications, equivalent changes and modifications made to the above embodiments by any technician familiar with the profession based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A cable connector, characterized in that: include: case; The terminal module is provided with more than two, each terminal module is inserted into the housing along the front-to-back direction, each terminal module includes an insulating base and a plurality of shielded cable assemblies arranged in the insulating base along a first direction, and the front end of each shielded cable assembly has a contact end extending forward from the front end surface of the housing and used for elastic contact and conduction with the PCB board, and the plurality of terminal modules are arranged in the housing along a second direction perpendicular to the first direction. The housing is provided with a plurality of mounting grooves for mounting corresponding shielded cable assemblies along a first direction. Each shielded cable assembly includes a cable, a shielding shell, and a terminal. The front end of the terminal is the contact end. The terminal is mounted in the shielding shell through an insulator. Two terminals are provided in each insulator. The two terminals form a differential pair. The cable includes a cable insulation layer, an inner conductor provided in the cable insulation layer, a shielding layer provided outside the cable insulation layer, and a shielding sheet riveted to the outer side of the front end of the shielding layer. The front end of the cable is riveted to the shielding shell through the shielding sheet, and the inner conductor is correspondingly connected to the terminal at the rear end of the terminal. The terminal module also includes a shielding buckle plate, which is buckled on the insulating base and covers all shielding shells in the same terminal module. The shielding buckle plate is in contact and conductive with each shielding shell.

2. The cable connector according to claim 1, wherein: Positioning protrusions are symmetrically arranged on both sides of the insulator, and positioning grooves matched with the positioning protrusions are opened on both sides of the shielding shell.

3. The cable connector according to claim 2, wherein: The positioning protrusions between adjacent insulators in the same terminal module are connected to each other to form a connecting arm, which is clamped in the corresponding positioning groove of the adjacent shielding shell; a through groove is provided on the rib between adjacent mounting grooves, and the connecting arm between adjacent insulators falls into the corresponding through groove, and the connecting arm and the through groove are blocked and matched in the front-to-back direction.

4. The cable connector according to claim 1, wherein: The shielding sheet includes a shielding sheet main body extending forward and backward, the front end of the shielding sheet main body extends and bends to both sides to form a pair of riveted main bodies, the riveted main bodies are arc-shaped sheet structures, and the riveted main bodies are used to contact and cooperate with the outer surface of the shielding layer; the rear end of the shielding sheet main body extends and bends to both sides to form a pair of riveted branch parts, the riveted branch parts are used to tighten the shielding layer, and there is a gap between the riveted main body and the riveted branch parts.

5. The cable connector according to claim 1, wherein: An injection molding body is provided at the rear end of the insulating base, the injection molding body is integrally connected to the insulating base, the injection molding body wraps the connection between the cable and the terminal, and the injection molding body relatively fixes the insulating base and the shielded cable assembly.

6. The cable connector according to claim 1, wherein: The shell is through-connected from front to back, and a conductive plastic plate is fixed inside the front end of the shell. After the terminal modules are installed in the shell, the front end surfaces of all shielding shells in each terminal module are in contact with the conductive plastic plate. A shielding cavity is provided on the conductive plastic plate to accommodate the contact ends of each differential pair, and the front end of the shielding cavity is open to allow the contact ends to extend forward.

7. The cable connector according to claim 6, wherein: A shielding mesh is fixed on the end surface of the conductive plastic board facing the PCB board. The shielding mesh is provided with signal terminal avoidance holes corresponding to the differential pairs. The shielding mesh is also provided with grounding spring pins protruding toward the PCB board. The grounding spring pins are used to connect to the grounding structure on the PCB board.

8. The cable connector according to claim 7, wherein: The signal terminal avoidance holes and grounding spring pins arranged in each row on the shielding mesh plate are alternately arranged along the first direction.

9. A high-speed cable connector assembly, characterized in that: The invention comprises a cable connector and a PCB board, wherein the cable connector is the cable connector according to any one of claims 1 to 8, and the PCB board is fixedly connected to the cable connector by screws so that the contact end and the PCB board are in stable elastic contact and conduction.

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