Transmission cable

Abstract

The utility model provides a transmission cable, and belongs to the technical field of signal transmission. The transmission cable comprises at least one cable assembly and a connector assembly. Each cable assembly comprises a signal line and a metal shielding layer, and the metal shielding layer wraps the signal line; the joint assembly is located at at least one end of the at least one cable assembly; the connector assembly comprises a metal shell, a circuit board and a shielding piece. The circuit board is located on one side of the metal shell, and the at least one cable assembly is fixed to the side, opposite to the circuit board, of the metal shell. The signal line and the metal shielding layer respectively extend into the metal shell, and the signal line is electrically connected with the circuit board; the shielding piece is located in the metal shell and connected with the outer wall of the metal shielding layer and the inner wall of the metal shell. According to the transmission cable provided by the embodiment of the utility model, a metal braid layer is canceled, and the transmission cable has better flexibility and smaller bending radius, so that the transmission cable can meet the use requirements in complex wiring scenes such as large-scale high-density and the like.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of signal transmission cables, and in particular to transmission cables. Background Art

[0002] Transmission cables are cables specially used for transmitting signals, and anti-interference performance is one of the key performance indicators of transmission cables.

[0003] In related technologies, transmission cables use core wires to transmit signals, and the core wires are wrapped with aluminum foil and a metal braided layer (or metal sheath) in sequence to shield external electromagnetic interference.

[0004] However, the metal braided layer has a high hardness and a limited bending radius, resulting in insufficient flexibility of the transmission cable, which cannot meet the usage requirements in complex wiring scenarios such as large-scale and high-density wiring. Utility Model Content

[0005] The embodiment of the utility model provides a transmission cable, which can solve the technical problems existing in the related art.

[0006] Specifically, the technical solution is as follows.

[0007] A transmission cable, comprising: at least one cable assembly and a connector assembly;

[0008] Each of the cable assemblies includes a signal line and a metal shielding layer, wherein the metal shielding layer is wrapped around the outside of the signal line;

[0009] The connector assembly is located at at least one end of the at least one cable assembly;

[0010] The connector assembly includes a metal shell, a circuit board and a shielding member;

[0011] The circuit board is located on one side of the metal shell, and the at least one cable assembly is fixed on a side of the metal shell opposite to the circuit board;

[0012] The signal line and the metal shielding layer extend into the interior of the metal shell respectively, and the signal line is electrically connected to the circuit board; the shielding component is located inside the metal shell and is connected to the outer wall of the metal shielding layer and the inner wall of the metal shell respectively.

[0013] The transmission cable provided by the embodiment of the present invention eliminates the metal braided layer, which can effectively reduce the hardness of the transmission cable. The transmission cable has better flexibility and a smaller bending radius. In addition, eliminating the metal braided layer can also reduce the weight of the transmission cable, so that the transmission cable can meet the usage requirements in complex wiring scenarios such as large-scale and high-density wiring.

[0014] The transmission cable of this embodiment can rely on the shielding member in the connector assembly to shield external interference, so that the transmission cable has better flexibility while ensuring the EMI (Electromagnetic Interference) effect of the transmission cable.

[0015] In some possible implementations, the shielding element is at least one of a conductive structure and a wave-absorbing structure.

[0016] Using conductive or absorbing structures as shielding components can reflect or absorb radiated or coupled interference, achieving overall shielding of the transmission cable. Mylar is a polyester film layer made from polyethylene terephthalate (PET) and has many excellent physical and chemical properties.

[0017] In some possible implementations, the shielding element is a metal foil, and the shielding element is wound around the metal shielding layer.

[0018] Metal foil is used as a shielding component and is connected to the metal shielding layer by winding. It has a simple structure and is easy to produce and process. The shielding component and the metal shielding layer fit well and have better conductive connection reliability. In addition, the metal foil can be compressed and deformed according to the spatial shape of the metal shell during the winding process, which can better fit the metal shell, thereby improving the working reliability of the shielding component.

[0019] In some possible implementations, there are at least two cable assemblies, at least two of the cable assemblies are arranged in parallel, and the metal shielding layer in each of the cable assemblies is connected to the shielding component respectively.

[0020] Through the above arrangement, when the number of cable assemblies is at least two, the metal shielding layer of each cable assembly is respectively connected to the shielding member, thereby ensuring that the shielding member can provide good electromagnetic shielding effect for each cable assembly, thereby achieving the electromagnetic shielding effect of the entire transmission cable.

[0021] In some possible implementations, the shielding member includes a single-wire shielding foil and a wire harness shielding foil;

[0022] The single-wire shielding foil is wound around the metal shielding layer in each cable assembly, and the wire harness shielding foil is wound around the wire harness formed by at least two cable assemblies, and positions of the wire harness shielding foil and the single-wire shielding foil overlap.

[0023] Through the above arrangement, the metal shielding layer of each cable assembly is first independently wrapped with a single-wire shielding foil, and then the wire harness formed by at least two cable assemblies is wrapped as a whole with a wire harness shielding foil, and the wire harness shielding foil is wrapped on the single-wire shielding foil, thereby realizing the electrical connection between the metal shielding layer of each cable assembly, multiple single-wire shielding foils and the wire harness shielding foil, and the reliability of the electrical connection between the shielding component and the metal shielding layer of each cable assembly is higher.

[0024] In some possible implementations, the outer wall of the metal shielding layer is provided with a protective film layer;

[0025] The protective film layer located inside the metal shell is provided with an avoidance gap recessed into the metal shielding layer, and the shielding component is electrically connected to the metal shielding layer in the avoidance gap.

[0026] In this embodiment, an avoidance gap is opened on the protective film layer located inside the metal shell, exposing a portion of the metal shielding layer, and the shielding component is arranged corresponding to the avoidance gap, so that the shielding component can be electrically connected to the metal shielding layer exposed by the avoidance gap, thereby forming a shielding structure with the metal shielding layer, the shielding component and the metal shell.

[0027] In some possible implementations, the metal shielding layer is an aluminum foil structure, and / or the protective film layer is a Mylar film structure.

[0028] Aluminum foil has good processing properties and excellent electrical conductivity. The use of aluminum foil structure to make metal shielding layer has low production cost and better shielding effect.

[0029] In some possible implementations, the signal line includes at least one core line and at least one ground line;

[0030] Each cable assembly further includes an insulating filler filled between the at least one core wire and the at least one ground wire.

[0031] Filling the gaps inside cable assemblies with insulating fillers can improve the structural stability of cable assemblies, reduce warping of line components, improve waterproof performance, and enhance mechanical and chemical protection. In addition, insulating fillers are usually non-conductive and can ensure the insulation performance between the core wire and the ground wire.

[0032] In some possible implementations, the transmission cable further includes a sheath wrapped around the outside of the at least one cable assembly.

[0033] By wrapping the sheath around the outside of the line assembly, the cable assembly can be mechanically and chemically protected, thereby improving the performance, service life and safety of the cable assembly.

[0034] In some possible implementations, the transmission cable is a direct attach cable.

[0035] Transmission cables are suitable as direct connection cables for signal transmission between devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A cross-sectional view of the structure of a transmission cable provided by an embodiment of the present utility model;

[0037] Figure 2 An exploded view of the structure of the transmission cable provided in an embodiment of the present utility model;

[0038] Figure 3 A schematic diagram of the structure of a transmission cable provided in an embodiment of the present utility model;

[0039] Figure 4 This is a schematic diagram of the connection between the cable assembly and the shielding member provided by an embodiment of the present utility model;

[0040] Figure 5 This is a schematic diagram of the connection between a cable assembly and a shielding member provided by another embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of the connection between a cable assembly and a shielding member provided by another embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the connection between a cable assembly and a shielding member provided by another embodiment of the present invention.

[0043] The reference numerals represent:

[0044] 1. Cable assembly;

[0045] 11. Signal line; 111. Core line; 112. Ground line;

[0046] 12. Insulation filler;

[0047] 13. Metal shielding layer; 131. Protective film layer; 1311. Avoidance gap;

[0048] 2. Connector assembly;

[0049] 21. Metal housing; 211. First housing; 212. Second housing;

[0050] 22. Circuit board;

[0051] 23. Shielding components; 231. Single-wire shielding foil; 232. Wire harness shielding foil;

[0052] 3. Sheath. DETAILED DESCRIPTION

[0053] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "length", "width", "thickness", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When the product is placed in different postures, the orientation may change, and therefore it cannot be understood as a limitation on the embodiments of the present invention.

[0054] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those skilled in the art.

[0055] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0056] Combine Figure 1 、 Figure 2 and Figure 3 As shown, this embodiment provides a transmission cable, which includes: at least one cable assembly 1 and a connector assembly 2. Exemplarily, the number of cable assemblies 1 is, for example, one, two, three, and so on.

[0057] Each cable assembly 1 includes a signal line 11 and a metal shielding layer 13 . The metal shielding layer 13 is wrapped around the outside of the signal line 11 .

[0058] Exemplarily, the signal line 11 and the metal shielding layer 13 are arranged with an insulating space therebetween.

[0059] The signal line 11 is used to transmit electrical signals, and the metal shielding layer 13 can shield the signal line 11 from external interference. Moreover, when there are multiple signal lines 11, the metal shielding layer 13 can form an electromagnetic shield between different signal lines 11, so that each signal line 11 can transmit signals without interfering with each other.

[0060] In another exemplary embodiment, the signal line 11 may be a metal wire or an optical fiber wire.

[0061] The connector assembly 2 is located at at least one end of at least one cable assembly 1. In one exemplary embodiment, there is one connector assembly 2 located at one end of the cable assembly 1. In another exemplary embodiment, there are two connector assemblies 2 located at both ends of the cable assembly 1.

[0062] The connector assembly 2 includes a metal shell 21, a circuit board 22 and a shielding component 23; the circuit board 22 is located on one side of the metal shell 21, and at least one cable assembly 1 is fixed on the side of the metal shell 21 opposite to the circuit board 22; the signal line 11 and the metal shielding layer 13 respectively extend into the interior of the metal shell 21, and the signal line 11 is electrically connected to the circuit board 22; the shielding component 23 is located inside the metal shell 21, and is respectively connected to the outer wall of the metal shielding layer 13 and the inner wall of the metal shell 21.

[0063] Exemplarily, the signal line 11 is electrically connected to the circuit board 22 by welding.

[0064] The transmission cable provided in this embodiment eliminates the metal braided layer, which can effectively reduce the hardness of the transmission cable. The transmission cable has better flexibility and a smaller bending radius. In addition, eliminating the metal braided layer can also reduce the weight of the transmission cable, so that the transmission cable can meet the usage requirements in complex wiring scenarios such as large-scale and high-density wiring.

[0065] The transmission cable of this embodiment can rely on the shielding member 23 in the connector assembly 2 to shield external interference, so that the transmission cable has better flexibility while ensuring the EMI (Electromagnetic Interference) effect of the transmission cable.

[0066] In some possible implementations, when there are multiple cable assemblies 1, the multiple cable assemblies 1 can be fixed on the same side of the metal shell 21, and the signal lines 11 of each cable assembly 1 extend into the metal shell 21 in parallel and are electrically connected to the circuit board 22 respectively.

[0067] With this arrangement, multiple cable assemblies 1 can be connected using the same connector assembly 2. Transmission cables can utilize multiple cable assemblies 1 for signal transmission, resulting in improved signal transmission performance. The side where the circuit board 22 is located serves as the plug-in end of the connector assembly 2. The end of the circuit board 22 facing the exterior of the metal housing 21 can be provided with a gold finger.

[0068] In some possible implementations, the shielding member 23 and the outer wall of the metal shielding layer 13 can be connected in such a way that the shielding member 23 wraps the metal shielding layer 13, or the shielding member 23 is connected to one side of the metal shielding layer 13, or the shielding member 23 is connected to both sides of the metal shielding layer 13.

[0069] In some possible implementations, reference Figure 2As shown, the metal shell 21 includes a first shell 211 and a second shell 212, which cover each other to form an accommodating cavity. At least a portion of the circuit board 22 extends from one side into the accommodating cavity, and at least a portion of the cable assembly 1 extends from the opposite side into the accommodating cavity. The signal line 11 is electrically connected to the circuit board 22 located in the accommodating cavity; the shielding member 23 is located in the accommodating cavity and is connected to the metal shielding layer 13 of the cable assembly 1 located in the accommodating cavity.

[0070] In some possible implementations, the transmission cable may be a transmission cable with a flat cross-section, or a transmission cable with a circular cross-section.

[0071] In some possible implementations, the connector assembly 2 may be an optical module interface, including but not limited to an SFP (Small Form Pluggable, optical module) interface and a Quad Small Form-factor Pluggable (quad-channel optical module) interface, and the like.

[0072] For example, when connector assemblies 2 are respectively provided at both ends of the cable assembly 1 , the types of the two connector assemblies 2 may be the same or different.

[0073] When both connector assemblies 2 are SFP interfaces, the transmission cable is used as an SFP-SPF cable; when both connector assemblies 2 are QSFP interfaces, the transmission cable is used as a QSFP-QSPF cable; when one of the two connector assemblies 2 is an SFP interface and the other is a QSFP interface, the transmission cable is used as a QSFP-4SPF cable.

[0074] In some possible implementations, the shielding member 23 is at least one of a conductive structure and a wave-absorbing structure, wherein the conductive structure may be a structure made of a conductive material, and the wave-absorbing structure may be a structure made of a wave-absorbing material.

[0075] By using a conductive structure or an absorbing structure as the shielding member 23 , radiation interference or coupling interference can be reflected or absorbed, thereby achieving an overall shielding effect for the transmission cable.

[0076] Exemplarily, the shielding member 23 is made of electromagnetic absorbing material, which is a material specifically used to absorb electromagnetic waves (including microwaves, radio frequencies, etc.). Electromagnetic absorbing materials include but are not limited to the following:

[0077] Conductive polymers: such as polyaniline, have good conductivity and wave absorption properties and a lightweight structure.

[0078] Carbon-based materials: such as carbon nanotubes, graphene and their composites, have excellent electrical conductivity and wave absorption properties.

[0079] Ferrite materials: such as ferrite particles or composite materials, have excellent magnetic properties and are particularly suitable for use in the radio frequency field.

[0080] Metal foam or metal fiber materials: These materials can effectively scatter electromagnetic waves, but can also absorb a certain proportion of electromagnetic waves.

[0081] Multilayer structure: Utilizing a combination of materials with different dielectric constants and permeabilities, multilayer composite materials are designed to achieve good absorption performance over a wider frequency range.

[0082] In some possible implementations, the shielding member 23 includes but is not limited to conductive foam, conductive rubber, conductive plastic, metal shrapnel, absorbing rubber, absorbing plastic, and the like.

[0083] Combine Figure 4 As shown, in some possible implementations, the shielding member 23 is a metal foil, and the shielding member 23 is wound around the metal shielding layer 13 .

[0084] Metal foil is used as the shielding part 23, which is connected to the metal shielding layer 13 by winding. It has a simple structure and is easy to produce and process. The shielding part 23 has a good bonding effect with the metal shielding layer 13 and has better conductive connection reliability. In addition, the metal foil can be compressed and deformed according to the spatial shape of the metal shell 21 during the winding process, and can better fit the metal shell 21, thereby improving the working reliability of the shielding part 23.

[0085] Compared to conductive plastic, using metal foil as the shielding element 23 eliminates concerns about poor bonding after curing or poor reliability of uncured conductive plastic. Compared to absorbing coatings, which are typically made of metal powder or wire and are prone to chipping during bending, these chips could be sucked into the chassis through the fan, causing a short circuit. Using metal foil as the shielding element 23 eliminates this chipping issue.

[0086] Combine Figure 5 and Figure 6 As shown, in some possible implementations, there are at least two cable assemblies 1 , which are arranged in parallel, and the metal shielding layer 13 in each cable assembly 1 is connected to the shielding member 23 , respectively.

[0087] Through the above arrangement, when the number of cable assemblies 1 is at least two, the metal shielding layer 13 of each cable assembly 1 is respectively connected to the shielding component 23, thereby ensuring that the shielding component 23 can provide good electromagnetic shielding effect for each cable assembly 1, thereby achieving the electromagnetic shielding effect of the entire transmission cable.

[0088] Exemplarily, when the number of cable assemblies 1 is at least two, all cable assemblies 1 are arranged on the same side of the metal shell 21, and each cable assembly 1 has a section extending into the metal shell 21. The protective film layer 131 on the outer wall of the metal shielding layer 13 of these cable assemblies 1 is provided with an avoidance gap 1311, and the position of the avoidance gap 1311 on each cable assembly 1 is aligned, so that only one shielding component 23 can be arranged at the corresponding position, and the shielding component 23 can be electrically connected to the metal shielding layer 13 of each cable assembly 1 at the same time.

[0089] Optionally, multiple cable assemblies 1 are arranged in parallel along the same plane, so that the shielding members 23 arranged on one side or both sides of the plane can be utilized to electrically connect to the metal shielding layer 13 of each cable assembly 1 at the same time.

[0090] Combine Figure 5 As shown, in some possible implementations, the shield 23 includes a single-wire shielding foil 231 and a wire harness shielding foil 232 .

[0091] The single-wire shielding foil 231 is wound around the metal shielding layer 13 in each cable assembly 1 , and the harness shielding foil 232 is wound around the harness formed by at least two cable assemblies 1 , and the positions of the harness shielding foil 232 and the single-wire shielding foil 231 overlap.

[0092] Through the above arrangement, the metal shielding layer 13 of each cable assembly 1 is first independently wound using the single-wire shielding foil 231, and then the wire harness formed by at least two cable assemblies 1 is wound as a whole using the wire harness shielding foil 232, and the wire harness shielding foil 232 is wound on the single-wire shielding foil 231, thereby realizing the electrical connection between the metal shielding layer 13 of each cable assembly 1, multiple single-wire shielding foils 231 and the wire harness shielding foil 232, and the reliability of the electrical connection between the shielding component 23 and the metal shielding layer 13 of each cable assembly 1 is higher.

[0093] Combine Figures 4 to 7 As shown, in some possible implementations, a protective film layer 131 is provided on the outer wall of the metal shielding layer 13 .

[0094] The protective film layer 131 located inside the metal shell 21 has an escape hole 1311 recessed into the metal shielding layer 13 . The shielding element 23 is electrically connected to the metal shielding layer 13 in the escape hole 1311 .

[0095] Considering that the metal shielding layer 13 is usually hard and brittle, and is easily broken and damaged during the bending process of the transmission cable, a protective film layer 131 is provided on the outer wall of the metal shielding layer 13. On the one hand, the protective film layer 131 can be used to fix the metal shielding layer 13, and on the other hand, the metal shielding layer 13 can also be externally insulated and protected.

[0096] On this basis, this embodiment opens an avoidance gap 1311 on the protective film layer 131 located inside the metal shell 21, exposing a portion of the metal shielding layer 13, and arranges the shielding component 23 corresponding to the avoidance gap 1311, so that the shielding component 23 can be electrically connected to the metal shielding layer 13 exposed by the avoidance gap 1311, thereby forming a shielding structure with the metal shielding layer 13, the shielding component 23 and the metal shell 21.

[0097] The shielding structure can not only absorb or reflect the internal radiation interference of the connector assembly 2 toward the cable assembly 1, but also absorb or reflect the coupling interference of the transmission cable toward the connector assembly 2, thereby achieving the electromagnetic shielding effect of the entire transmission cable.

[0098] In some possible implementations, the avoidance gap 1311 is formed by processing using methods such as laser irradiation.

[0099] In some possible implementations, a protective film layer 131 is provided on the outer wall of the metal shielding layer 13, and the protective film layer 131 located inside the metal shell 21 is connected to the shielding component 23, thereby forming a sandwich structure of the metal shielding layer 13, the protective film layer 131 and the shielding component 23, which can also absorb or reflect radiation interference and coupling interference.

[0100] In some possible implementations, the metal shielding layer 13 is an aluminum foil structure. Aluminum foil has good processing properties and excellent electrical conductivity. Using an aluminum foil structure to manufacture the metal shielding layer 13 has low production costs and better shielding effects.

[0101] In some possible implementations, the protective film layer 131 is a Mylar film structure.

[0102] Mylar is a polyester film made of polyethylene terephthalate (PET) with many excellent physical and chemical properties.

[0103] Mylar film has high tensile strength and tear resistance, can be used in the temperature range of -70℃ to 150℃, and is an excellent electrical insulation material with good tolerance to a variety of chemicals and is not easily corroded.

[0104] Combine Figure 1 and Figure 4 As shown, in some possible implementations, the signal line 11 includes at least one core line 111 and at least one ground line 112 .

[0105] Each cable assembly 1 further includes an insulating filler 12 , which is filled between at least one core wire 111 and at least one ground wire 112 .

[0106] Filling the gaps within the cable assembly 1 with insulating filler 12 can improve the structural stability of the cable assembly 1, reduce warping of the circuit assembly, improve waterproof performance, and enhance mechanical and chemical protection. Furthermore, the insulating filler 12 is generally non-conductive and can ensure insulation between the core wire 111 and the ground wire 112.

[0107] Combine Figure 1 and Figure 2 As shown, in some possible implementations, the transmission cable further includes a sheath 3 , which is wrapped around the outside of at least one cable assembly 1 .

[0108] By wrapping the outer sheath 3 around the line assembly, mechanical and chemical protection can be provided to the cable assembly 1, thereby improving the performance, service life, and safety of the cable assembly 1. For example, the sheath 3 can be of various types, including PVC (polyvinyl chloride), polyolefin, low-smoke halogen-free material, etc.

[0109] In some possible implementations, the transmission cable is a direct connection cable suitable as a connection tool for signal transmission between devices, for example, for connecting switches, servers, and storage devices in a rack for stacking.

[0110] Direct Attach Cable (DAC), also known as direct-attach copper cable, is available in two types: active and passive. Passive DAC cables consume less power and can transmit data at rates of 4 to 10 GB per second, making them suitable for short-distance connections. Copper DAC cables excel at heat dissipation, contributing to improved data center security and environmental friendliness. Compared to fiber optic cables, DAC cables are less expensive and consume virtually no power, reducing electricity costs.

[0111] In some possible implementations, the connector assembly 2 is an optical connection module such as SFP+, SFP28, QSFP+, QSFP56 or QSFP28, which can be connected to a device such as a switch.

[0112] In some possible implementations, combined with Figure 1 and Figure 5 As shown, this embodiment provides a transmission cable, which includes multiple cable assemblies 1 and connector assemblies 2. Each cable assembly 1 includes at least one core wire 111 and at least one ground wire 112, a metal shielding layer 13 and an insulating filler 12. The metal shielding layer 13 is wrapped around the outside of the at least one core wire 111 and the at least one ground wire 112, and the insulating filler 12 is filled between the at least one core wire 111 and the at least one ground wire 112.

[0113] A protective film layer 131 is provided on the outer wall of the metal shielding layer 13 .

[0114] The connector assembly 2 includes a metal shell 21, a circuit board 22 and a shielding member 23; the circuit board 22 is located on one side of the metal shell 21, and multiple cable assemblies 1 can be fixed on the opposite side of the metal shell 21. The signal line 11 and the metal shielding layer 13 of each cable assembly 1 extend parallel to the metal shell 21 and are electrically connected to the circuit board 22 respectively.

[0115] The shielding member 23 is located inside the metal shell 21 and is connected to the outer wall of the metal shielding layer 13 and the inner wall of the metal shell 21 respectively.

[0116] The shield 23 includes a single-wire shielding foil 231 and a wire harness shielding foil 232 .

[0117] The single-line shielding foil 231 is wrapped around the metal shielding layer 13 or the protective film layer 131 in each cable assembly 1, and the harness shielding foil 232 is wrapped around the harness formed by multiple cable assemblies 1, and the positions of the harness shielding foil 232 and the single-line shielding foil 231 overlap.

[0118] In the related art, the outer thickness of the metal braid is approximately 0.15mm, and the laminate thickness exceeds 0.4mm. The transmission cable provided by the present invention eliminates the conventional metal braid layer (metal sheath), reducing the overall weight of the transmission cable by 20% compared to the related art and significantly reducing the bending radius. Furthermore, the shielding element 23 disposed within the connector assembly 2 effectively absorbs or reflects internal radiation interference and cable coupling interference, providing excellent electromagnetic shielding performance.

[0119] The transmission cable provided by the embodiment of the present utility model can be widely used in high-speed, high-density, multi-cluster, and super-node physical connection scenarios.

[0120] The above description is only for the purpose of facilitating the understanding of the technical solution of the present invention by those skilled in the art and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A transmission cable, characterized in that: The transmission cable comprises: at least one cable assembly (1) and a connector assembly (2); Each of the cable assemblies (1) comprises a signal line (11) and a metal shielding layer (13), wherein the metal shielding layer (13) is wrapped around the outside of the signal line (11); The connector assembly (2) is located at at least one end of the at least one cable assembly (1); The connector assembly (2) comprises a metal shell (21), a circuit board (22) and a shielding member (23); The circuit board (22) is located on one side of the metal shell (21), and the at least one cable assembly (1) is fixed on a side of the metal shell (21) opposite to the circuit board (22); The signal line (11) and the metal shielding layer (13) respectively extend into the interior of the metal shell (21), and the signal line (11) is electrically connected to the circuit board (22); the shielding member (23) is located inside the metal shell (21) and is respectively connected to the outer wall of the metal shielding layer (13) and the inner wall of the metal shell (21).

2. The transmission cable according to claim 1, wherein: The shielding member (23) is at least one of a conductive structure and a wave-absorbing structure.

3. The transmission cable according to claim 1, wherein: The shielding member (23) is a metal foil, and the shielding member (23) is wound on the metal shielding layer (13).

4. The transmission cable according to claim 3, wherein: The number of the cable assemblies (1) is at least two, and the at least two cable assemblies (1) are arranged in parallel, and the metal shielding layer (13) in each of the cable assemblies (1) is respectively connected to the shielding component (23).

5. The transmission cable according to claim 4, characterized in that: The shielding member (23) includes a single-wire shielding foil (231) and a wire harness shielding foil (232); The single-wire shielding foil (231) is wound on the metal shielding layer (13) in each of the cable assemblies (1), and the wire harness shielding foil (232) is wound on the wire harness formed by at least two of the cable assemblies (1), and the positions of the wire harness shielding foil (232) and the single-wire shielding foil (231) overlap.

6. The transmission cable according to claim 1, wherein: The outer wall of the metal shielding layer (13) is provided with a protective film layer (131); The protective film layer (131) located inside the metal shell (21) has an avoidance gap (1311) recessed into the metal shielding layer (13), and the shielding component (23) is electrically connected to the metal shielding layer (13) in the avoidance gap (1311).

7. The transmission cable according to claim 6, characterized in that: The metal shielding layer (13) is an aluminum foil structure, and / or the protective film layer (131) is a Mylar film structure.

8. The transmission cable according to any one of claims 1 to 7, characterized in that: The signal line (11) includes at least one core line (111) and at least one ground line (112); Each of the cable assemblies (1) further comprises an insulating filler (14), wherein the insulating filler (14) is filled between the at least one core wire (111) and the at least one ground wire (112).

9. The transmission cable according to any one of claims 1 to 7, characterized in that: The transmission cable further comprises a sheath (3), wherein the sheath (3) is wrapped around the outside of the at least one cable assembly (1).

10. The transmission cable according to claim 1, wherein: The transmission cable is a direct connection cable.

Images