Composite cable

Abstract

The utility model discloses a kind of composite cables, including cable core and the outer sheath of being sleeved in the cable core outside, the cable core includes first data transmission unit, second data transmission unit, signal transmission unit, electric energy transmission unit and cable core shielding layer;The cable core shielding layer is wrapped in the first data transmission unit, second data transmission unit, signal transmission unit and electric energy transmission unit outside.The composite cable provided by the utility model, by integrating different impedance data transmission line, signal transmission line and power line in a composite cable, space utilization is high, anti-interference ability is enhanced, impedance matching optimization, power supply and signal synchronization stability, reliability is promoted, economy and convenience, in performance, reliability and cost aspect, remarkable improvement is obtained.

Description

Technical Field

[0001] This utility model belongs to the field of cable development technology, and specifically relates to a composite cable. Background Technology

[0002] In traditional cable design, data transmission, signal transmission, and power supply are typically implemented using discrete cables, i.e., two data transmission lines with different impedances, two identical signal transmission lines, and a separate power supply line. However, this design has the following drawbacks:

[0003] (1) Complex wiring and large space occupation: When multiple cables are arranged in parallel, the insulation and shielding between them need to be considered, which leads to an increase in the size of the wire harness, making it difficult to install in a small space and increasing the overall wiring complexity of the equipment.

[0004] (2) Severe signal interference: Electromagnetic coupling is easily generated between data lines and signal lines with different impedances. Especially when transmitting high-frequency signals, due to impedance mismatch or lack of unified shielding, signal crosstalk, attenuation or distortion will occur, affecting transmission stability.

[0005] (3) Power supply noise affects signal quality: When the power line and signal line are not integrated with shielding, power fluctuations or high-frequency noise will interfere with signal transmission through radiation or conduction, reducing the system's anti-interference capability.

[0006] (4) Low reliability: With more connection points for multiple cables, the interfaces are prone to poor contact due to loosening and oxidation. At the same time, uneven distribution of mechanical stress may lead to local breakage risk.

[0007] (5) High cost and maintenance difficulty: Separate cables need to be manufactured and assembled separately, resulting in high material and labor costs. Furthermore, each cable needs to be tested during troubleshooting, leading to low maintenance efficiency.

[0008] Therefore, there is an urgent need for an integrated, high-performance composite cable solution to address the above problems.

[0009] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0010] To overcome the shortcomings of the prior art, the purpose of this utility model is to provide a composite cable.

[0011] To achieve the above and other related objectives, the technical solution provided by this utility model is: a composite cable, comprising a cable core and an outer sheath sleeved outside the cable core, wherein the cable core comprises a first data transmission unit, a second data transmission unit, a signal transmission unit, a power transmission unit, and a cable core shielding layer; the cable core shielding layer is disposed outside the first data transmission unit, the second data transmission unit, the signal transmission unit, and the power transmission unit.

[0012] Furthermore, the first data transmission unit includes one or more sets of first data transmission lines and a first data transmission inner shielding layer. The first data transmission lines are located inside the first data transmission inner shielding layer, and the inner and outer sides of the first data transmission inner shielding layer are provided with first data transmission wrapping layers. Among them, one set of first data transmission lines includes four first data transmission conductors and a first data transmission insulation layer covering the first data transmission conductors.

[0013] Furthermore, the second data transmission unit includes one or more sets of second data transmission lines and a second data transmission inner shielding layer. The second data transmission lines are located inside the second data transmission inner shielding layer, and the inner and outer sides of the second data transmission inner shielding layer are provided with second data transmission wrapping layers. Among them, one set of second data transmission lines includes two second data transmission conductors and a second data transmission insulation layer covering the second data transmission conductors.

[0014] Furthermore, two signal transmission units are provided. Each signal transmission unit includes one or more sets of signal transmission lines and an inner shielding layer. The signal transmission lines are located within the inner shielding layer, and signal transmission wrapping layers are provided on both the inner and outer sides of the inner shielding layer. Each set of signal transmission lines includes four signal transmission conductors and a signal transmission insulation layer covering the conductors. In this scheme, the signal transmission unit is used to transmit control signals.

[0015] Furthermore, four power transmission units are provided, each power transmission unit being a power transmission line, the power transmission line including a power transmission conductor and a power transmission insulation layer covering the power transmission conductor. In this scheme, the power transmission units are used for power transmission.

[0016] Furthermore, the inner side of the cable core shielding layer is provided with an inner cable core wrapping layer, and the outer side of the cable core shielding layer is provided with an outer cable core wrapping layer; the cable core shielding layer is made of tin-plated copper wire wound with a winding density ≥85%; both the inner and outer cable core wrapping layers are made of PTFE tape. In this solution, PTFE, compared to traditional PVC or PE wrapping materials, can prevent the wrapping layer from melting or aging in high-temperature environments.

[0017] Furthermore, a filling layer is provided within the cable core shielding layer. In this design, the material of the filling layer includes, but is not limited to, fiber filaments.

[0018] Furthermore, the first data transmission conductor is composed of multiple strands of tin-plated copper wires twisted together, with a twist pitch of 27-29 mm, and 35-40 strands of tin-plated copper wires, each with an outer diameter of 0.07 mm; the outer diameter of the first data transmission insulation layer is 0.85-1.15 mm; the first data transmission wrapping layer is formed by winding PTFE tape; and the first data transmission inner shielding layer is formed by winding tin-plated copper wire with a winding density ≥85%. In this design, the material of the first data transmission insulation layer includes, but is not limited to, FEP.

[0019] Furthermore, the second data transmission conductor is composed of multiple strands of tin-plated copper wires twisted together, with a twist pitch of 38-42 mm and 35-40 strands. The outer diameter of each tin-plated copper wire is 0.07 mm. The outer diameter of the second data transmission insulation layer is 1.3-1.6 mm. The second data transmission wrapping layer is made of PTFE tape. The second data transmission inner shielding layer is made of tin-plated copper wire wound with a winding density ≥85%. In this design, the material of the second data transmission insulation layer includes, but is not limited to, FEP.

[0020] Furthermore, the signal transmission conductor is composed of multiple strands of tin-plated copper wires twisted together, with a twist pitch of 24-28 mm and 35-40 strands. The outer diameter of each tin-plated copper wire is 0.07 mm. The outer diameter of the signal transmission insulation layer is 0.85-0.95 mm. The signal transmission wrapping layer is formed by winding PTFE tape. The inner shielding layer is formed by winding tin-plated copper wire with a winding density ≥85%. In this design, the material of the signal transmission insulation layer includes, but is not limited to, ETFE.

[0021] Furthermore, the power transmission line is composed of multiple tin-plated copper wires twisted together; the number of tin-plated copper wires is 255-265, and the outer diameter of each tin-plated copper wire is 0.05mm; the outer diameter of the power transmission insulation layer is 1.4-1.6mm. In this design, the material of the power transmission insulation layer includes, but is not limited to, ETFE.

[0022] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0023] This invention integrates data transmission lines, signal transmission lines, and power lines of different impedances into a single composite cable, offering the following significant advantages:

[0024] (1) High space utilization: By optimizing the internal structure design of the cable, the multi-functional transmission line is integrated into a single outer sheath, which significantly reduces the wiring volume and is suitable for compact equipment installation.

[0025] (2) Enhanced anti-interference capability: The layered shielding design provides electromagnetic isolation for high-frequency data lines, signal lines and power lines, effectively suppressing crosstalk and external noise, and ensuring the integrity and stability of signal transmission.

[0026] (3) Impedance matching optimization: By using a composite structure, the coordinated layout of lines with different impedances is achieved, reducing signal reflection and loss, which is especially suitable for high-speed data transmission scenarios.

[0027] (4) Stable power supply and signal synchronization: The integrated shielding design of power lines and signal lines can reduce common-mode noise, improve the system's resistance to power fluctuations, and reduce grounding loop interference.

[0028] (5) Improved reliability: Reduced external connection points reduce the risk of contact failure; composite sheath material provides higher mechanical strength and environmental adaptability (such as bending resistance and tensile strength).

[0029] (6) Economy and convenience: Simplify production and assembly processes and reduce material and maintenance costs; users only need to deploy a single cable to achieve multi-functional transmission, which greatly improves installation and maintenance efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the cross-section of the composite cable of this utility model;

[0031] Figure 2 This is a cross-sectional schematic diagram of the first data transmission unit of this utility model;

[0032] Figure 3 This is a cross-sectional schematic diagram of the second data transmission unit of this utility model;

[0033] Figure 4 This is a schematic cross-sectional view of the signal transmission unit of this utility model;

[0034] Figure 5 This is a schematic cross-sectional view of the power transmission unit of this utility model;

[0035] In the above attached figures,

[0036] 1. Cable core; 2. Outer sheath; 3. Cable core shielding layer; 31. Inner wrapping layer of cable core; 32. Outer wrapping layer of cable core; 4. Filler layer;

[0037] A. First data transmission unit; A1. First data transmission line; A11. First data transmission conductor; A12. First data transmission insulation layer; A2. First data transmission inner shielding layer; A21. First data transmission wrapping layer;

[0038] B, Second data transmission unit; B1, Second data transmission line; B11, Second data transmission conductor; B12, Second data transmission insulation layer; B2, Second data transmission inner shielding layer; B21, Second data transmission wrapping layer;

[0039] C, Signal transmission unit; C1, Signal transmission line; C11, Signal transmission conductor; C12, Signal transmission insulation layer; C2, Signal transmission inner shielding layer; C21, Signal transmission wrapping layer;

[0040] D, Power transmission unit; D1, Power transmission line; D11, Power transmission conductor; D12, Power transmission insulation layer. Detailed Implementation

[0041] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0042] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0045] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0046] Example:

[0047] See appendix Figure 1 As shown, this embodiment provides a composite cable, including a cable core 1 and an outer sheath 2 sleeved on the cable core 1. The cable core 1 includes a first data transmission unit A, a second data transmission unit B, a signal transmission unit C, a power transmission unit D, and a cable core shielding layer 3.

[0048] The cable core shielding layer 3 is disposed outside the first data transmission unit A, the second data transmission unit B, the signal transmission unit C, and the power transmission unit D. The inner side of the cable core shielding layer 3 is provided with an inner cable core wrapping layer 31, and the outer side of the cable core shielding layer 3 is provided with an outer cable core wrapping layer 32.

[0049] The cable core shielding layer 3 is made of tin-plated copper wire wound with a winding density of ≥85%. Both the inner cable core wrapping layer 31 and the outer cable core wrapping layer 32 are made of PTFE tape. PTFE can withstand temperatures from -200°C to +260°C for extended periods, and even up to 300°C for short periods, making it suitable for high-temperature environments. In high-temperature scenarios, compared to traditional PVC or PE wrapping materials, it can prevent the wrapping layer from melting or aging. As a cable wrapping material, PTFE plays a crucial protective role in the cable structure due to its excellent high-temperature resistance, insulation, and chemical stability. A filling layer 4 is provided inside the cable core shielding layer 3; the material of the filling layer 4 is fiber filaments, but not limited to fiber filaments.

[0050] See appendix Figure 2 As shown, the first data transmission unit A includes one or more sets of first data transmission lines A1 and a first data transmission inner shielding layer A2. The first data transmission lines A1 are located inside the first data transmission inner shielding layer A2. The inner and outer sides of the first data transmission inner shielding layer A2 are provided with first data transmission wrapping layers A21. Among them, one set of first data transmission lines A1 includes four first data transmission conductors A11 and a first data transmission insulation layer A12 covering the first data transmission conductors A11.

[0051] The first data transmission conductor A11 is made of multiple strands of tin-plated copper wires twisted together, with a twist pitch of 27~29mm, which can be 27mm, 28mm, or 29mm; the number of tin-plated copper wires is 35~40, which can be 35, 37, or 40; the outer diameter of each tin-plated copper wire is 0.07mm; the outer diameter of the first data transmission insulation layer A12 is 0.85~1.15mm, which can be 0.85mm, 1mm, or 1.15mm. The material of the first data transmission insulation layer A12 includes, but is not limited to, FEP; the first data transmission wrapping layer A21 is made of PTFE tape; the first data transmission inner shielding layer A2 is made of tin-plated copper wire wound with a winding density ≥85%.

[0052] See appendix Figure 3 As shown, the second data transmission unit B includes one or more sets of second data transmission lines B1 and a second data transmission inner shielding layer B2. The second data transmission lines B1 are located inside the second data transmission inner shielding layer B2. The inner and outer sides of the second data transmission inner shielding layer B2 are provided with second data transmission wrapping layers B21. Among them, one set of second data transmission lines B1 includes two second data transmission conductors B11 and a second data transmission insulating layer B12 covering the second data transmission conductors B11.

[0053] The second data transmission conductor B11 is made of multiple strands of tin-plated copper wires twisted together, with a twist pitch of 38~42mm (38mm, 40mm, or 42mm are acceptable). The number of tin-plated copper wires is 35~40 (35, 37, or 40 are acceptable). The outer diameter of each tin-plated copper wire is 0.07mm. The outer diameter of the second data transmission insulation layer B12 is 1.3~1.6mm (1.3mm, 1.45mm, or 1.6mm are acceptable). The material of the second data transmission insulation layer B12 includes, but is not limited to, FEP. The second data transmission wrapping layer B21 is made of PTFE tape. The second data transmission inner shielding layer B2 is made of tin-plated copper wire wound with a winding density ≥85%.

[0054] The impedance of the second data transmission unit (B) is different from that of the first data transmission unit (A). The impedance of the second data transmission unit (B) is larger. When the characteristic impedance of the first data transmission unit (A) is 100±15Ω (1MHz), the impedance of the second data transmission unit (B) is 120±12Ω (1MHz).

[0055] See appendix Figure 4 As shown, two signal transmission units C are provided. Each signal transmission unit C includes one or more sets of signal transmission lines C1 and an inner shielding layer C2. The signal transmission lines C1 are located inside the inner shielding layer C2. Signal transmission wrapping layers C21 are provided on both the inner and outer sides of the inner shielding layer C2. Each set of signal transmission lines C1 includes four signal transmission conductors C11 and a signal transmission insulating layer C12 covering the signal transmission conductors C11. The signal transmission unit C is used to transmit control signals.

[0056] The signal transmission conductor C11 is made of multiple strands of tin-plated copper wires twisted together, with a twist pitch of 24~28mm (24mm, 26mm, or 28mm are acceptable). The number of tin-plated copper wires is 35~40 (35, 37, or 40 are acceptable). The outer diameter of each tin-plated copper wire is 0.07mm. The outer diameter of the signal transmission insulation layer C12 is 0.85~0.95mm (0.85mm, 0.9mm, or 0.95mm are acceptable). The material of the signal transmission insulation layer C12 includes, but is not limited to, ETFE. The signal transmission wrapping layer C21 is made of PTFE tape. The inner shielding layer C2 is made of tin-plated copper wire wound with a winding density ≥85%.

[0057] See appendix Figure 5 As shown, there are four power transmission units D, each of which is a power transmission line D1. The power transmission line D1 includes a power transmission conductor D11 and a power transmission insulation layer D12 covering the power transmission conductor D11. The power transmission unit D is used for power transmission, that is, a power line.

[0058] The power transmission line (D1) is made of multiple tinned copper wires twisted together; the number of tinned copper wires is 255~265, and the number of wires can be 255, 259 or 265; the outer diameter of a single tinned copper wire is 0.05mm; the outer diameter of the power transmission insulation layer (D12) is 1.4~1.6mm; the outer diameter is 1.4mm, 1.5mm or 1.6mm.

[0059] The material of the power transmission insulation layer (D12) includes, but is not limited to, ETFE.

[0060] In the above embodiments, the twist pitch refers to the distance that one of the single wires (fine wires) travels when it rotates once along the twisting axis when multiple single wires (fine wires) are twisted into a conductor (stranded conductor). It is used to measure the tightness of the stranded structure and the length of the helical period.

[0061] The composite cable provided by this utility model integrates data transmission lines, signal transmission lines and power lines with different impedances into a single composite cable. This results in high space utilization, enhanced anti-interference capability, optimized impedance matching, stable power supply and signal synchronization, improved reliability, and enhanced economy and convenience. It achieves significant improvements in performance, reliability and cost.

[0062] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A composite cable, comprising a cable core (1) and an outer sheath (2) sleeved over the cable core (1), characterized in that: The cable core (1) includes a first data transmission unit (A), a second data transmission unit (B), a signal transmission unit (C), a power transmission unit (D), and a cable core shielding layer (3). The cable core shielding layer (3) is wrapped around the first data transmission unit (A), the second data transmission unit (B), the signal transmission unit (C), and the power transmission unit (D); The first data transmission unit (A) includes one or more sets of first data transmission lines (A1) and a first data transmission inner shielding layer (A2). The first data transmission line (A1) is located inside the first data transmission inner shielding layer (A2), and the first data transmission inner shielding layer (A2) is provided with a first data transmission wrapping layer (A21) on both the inner and outer sides. The first data transmission line (A1) includes four first data transmission conductors (A11) and a first data transmission insulation layer (A12) covering the first data transmission conductors (A11).

2. The composite cable according to claim 1, characterized in that: The second data transmission unit (B) includes one or more sets of second data transmission lines (B1) and a second data transmission inner shielding layer (B2). The second data transmission line (B1) is located inside the second data transmission inner shielding layer (B2), and the inner and outer sides of the second data transmission inner shielding layer (B2) are provided with second data transmission wrapping layers (B21). The set of second data transmission lines (B1) includes two second data transmission conductors (B11) and a second data transmission insulation layer (B12) covering the second data transmission conductors (B11).

3. The composite cable according to claim 1, characterized in that: Two signal transmission units (C) are provided. Each signal transmission unit (C) includes one or more sets of signal transmission lines (C1) and a signal transmission inner shielding layer (C2). The signal transmission lines (C1) are located inside the signal transmission inner shielding layer (C2). Signal transmission wrapping layers (C21) are provided on both the inner and outer sides of the signal transmission inner shielding layer (C2). One set of signal transmission lines (C1) includes four signal transmission conductors (C11) and a signal transmission insulation layer (C12) covering the signal transmission conductors (C11).

4. The composite cable according to claim 1, characterized in that: The power transmission unit (D) is provided in four parts, and each power transmission unit (D) is a power transmission line (D1). The power transmission line (D1) includes a power transmission conductor (D11) and a power transmission insulation layer (D12) covering the power transmission conductor (D11).

5. A composite cable according to claim 1, characterized in that: The inner side of the cable core shielding layer (3) is provided with an inner cable core wrapping layer (31), and the outer side of the cable core shielding layer (3) is provided with an outer cable core wrapping layer (32). The cable core shielding layer (3) is made of tin-plated copper wire with a winding density of ≥85%; the inner cladding layer (31) and the outer cladding layer (32) of the cable core are both made of PTFE tape.

6. A composite cable according to claim 1, characterized in that: The first data transmission conductor (A11) is made of multiple tin-plated copper wires twisted together, with a twist pitch of 27~29mm, 35~40 tin-plated copper wires, and the outer diameter of each tin-plated copper wire is 0.07mm. The outer diameter of the first data transmission insulation layer (A12) is 0.85~1.15mm; The first data transmission wrapping layer (A21) is formed by wrapping with PTFE tape; The first data transmission inner shielding layer (A2) is made of tin-plated copper wire wound with a winding density of ≥85%.

7. A composite cable according to claim 2, characterized in that: The second data transmission conductor (B11) is made of multiple tin-plated copper wires twisted together, with a twist pitch of 38~42mm, 35~40 tin-plated copper wires, and the outer diameter of each tin-plated copper wire is 0.07mm. The outer diameter of the second data transmission insulation layer (B12) is 1.3~1.6mm; The second data transmission wrapping layer (B21) is formed by wrapping with PTFE tape; The second data transmission inner shielding layer (B2) is made of tin-plated copper wire wound with a winding density of ≥85%.

8. A composite cable according to claim 3, characterized in that: The signal transmission conductor (C11) is made of multiple tin-plated copper wires twisted together, with a twist pitch of 24~28mm, 35~40 tin-plated copper wires, and an outer diameter of 0.07mm for each tin-plated copper wire. The outer diameter of the signal transmission insulating layer (C12) is 0.85~0.95mm; The signal transmission wrapping layer (C21) is made of PTFE tape. The signal transmission inner shielding layer (C2) is made of tin-plated copper wire wound with a winding density of ≥85%.

9. A composite cable according to claim 4, characterized in that: The power transmission line (D1) is made of multiple tin-plated copper wires twisted together; the number of tin-plated copper wires is 255 to 265, and the outer diameter of each tin-plated copper wire is 0.05 mm. The outer diameter of the power transmission insulation layer (D12) is 1.4~1.6mm.

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