Photoelectric composite cable structure for communication from local area network optical fiber to desktop

Abstract

The utility model relates to a photoelectric composite cable structure for local area network fiber-to-desktop communication, which comprises a cable core and an outer sheath, the outer sheath is sleeved outside the cable core, the cable core comprises optical fiber units, power transmission units and a cable core filler, the optical fiber units and the power transmission units are arranged in a staggered manner along the axial direction of the outer sheath, and the optical fiber units and the power transmission units are arranged in a staggered manner. The power transmission unit comprises at least two annealed copper wires and a copper wire sheath, the copper wire sheath is sleeved outside the annealed copper wires, the optical fiber unit comprises an optical fiber and an optical fiber sheath, the optical fiber sheath is sleeved outside the optical fiber, and cable core fillers are filled among the optical fiber unit, the power transmission unit and the inner wall of the outer sheath. The outer sheath, the copper wire sheath and the optical fiber sheath are all low-smoke halogen-free sheaths. According to the photoelectric composite cable structure for communication from the optical fiber to the desktop in the local area network, the optical fiber and the power line are reasonably integrated, and the utilization rate and roundness of the internal space are improved while the function is ensured, so that the production difficulty is reduced, and the product quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of communication cable technology, and in particular to an optoelectronic composite cable structure for fiber-to-the-desktop communication in a local area network. Background Technology

[0002] With the rapid development of smart offices, the Industrial Internet of Things (IIoT), and digitalization, the demand for high bandwidth, low latency, and long-distance transmission in local area networks (LANs) is increasing daily. Traditional copper cables, limited by transmission distance, electromagnetic interference, and bandwidth bottlenecks, can no longer meet the needs of scenarios such as 4K / 8K video, cloud computing, and virtual reality. Fiber optic cables, with their near-unlimited bandwidth, anti-interference characteristics, and long-distance transmission capabilities, have become the ideal alternative to copper cables.

[0003] However, in actual fiber-to-the-desktop deployments, device power supply becomes a key challenge. Traditional solutions require separate laying of fiber optic and power lines, leading to high cabling complexity, large space occupation, and increased construction costs. To address this issue, fiber-optic composite cables have emerged. Fiber-optic composite cables are composite cable products that integrate fiber optics and power lines within the same cable structure. They combine the high-speed data transmission characteristics of fiber optics with the power supply function of power lines, aiming to provide an integrated solution for devices that need to simultaneously achieve data communication and power supply, and have significant application potential in the field of local area network cabling. Currently, fiber-optic composite cables suffer from insufficient internal space utilization, resulting in an overall larger diameter and less round shape, causing production difficulties and increasing the yield of defective products. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an optoelectronic composite cable structure for local area network fiber-to-the-desktop communication, which can reasonably integrate optical fiber and power line, improve the utilization rate and roundness of internal space while ensuring its function, thereby reducing production difficulties and ensuring product quality.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A fiber-optic composite cable structure for local area network fiber-to-the-desktop communication includes a cable core and an outer sheath. The outer sheath is fitted over the cable core and has a hollow structure. The cable core includes optical fiber units, power transmission units, and cable core filler. The optical fiber units and power transmission units are in contact with each other and are staggered along the axial direction of the outer sheath. Each power transmission unit includes at least two soft copper wires and a copper wire sheath. The soft copper wires are spaced apart, and the copper wire sheath is fitted over the soft copper wires. At least one optical fiber unit is provided, and each optical fiber unit includes an optical fiber and an optical fiber sheath. The optical fiber sheath is fitted over the optical fiber. The space between the optical fiber units and the power transmission units and the inner wall of the outer sheath is filled with cable core filler. The outer sheath, copper wire sheath, and optical fiber sheath are all made of low-smoke halogen-free material.

[0007] This structure integrates fiber optic units and power transmission units, which are in contact with each other and staggered along the outer sheath axis. This avoids wasting cross-sectional space caused by parallel arrangement of units, maximizing the utilization of the cable core cross-section and achieving higher-density functional integration within the same outer diameter. Simultaneously, the power transmission units use multiple thin-diameter soft copper wires spaced apart, rather than a single rigid copper conductor. This improves the overall flexibility of the cable and avoids the additional space requirements caused by deformation when rigid conductors bend, allowing the cable to be flexibly laid close to corners, table seams, and other complex paths. Furthermore, the sheath uses high-strength, low-smoke, halogen-free materials, maintaining its original shape under long-term pressure, preventing space compression between adjacent cables due to sheath collapse, and maintaining the spatial order of the overall cabling system. In summary, this structure achieves a high degree of integration of optoelectronic functions within a unit cross-sectional area, significantly improving space utilization efficiency. Its compact and flexible design can adapt to high-density cabling scenarios, reducing the need for conduit expansion or concealed space renovation, while also considering future expandability and avoiding redundant space occupation due to functional upgrades.

[0008] Furthermore, the cable core filler is an aramid fiber layer, which is formed by weaving multiple aramid fibers into a honeycomb structure. This mesh structure, created by the weaving of multiple aramid fibers, provides the cable core filler with high strength support in the axial, radial, and tangential directions, simultaneously resisting multi-dimensional mechanical stresses such as tension, compression, and torsion during cable installation. The honeycomb weaving achieves isotropic mechanical properties through its porous structure, reducing weight compared to traditional solid fillers and improving the bending and resilience of the cable core filler, making it more suitable for scenarios involving frequent bending.

[0009] Preferably, a reinforcing layer is provided between the outer sheath and the cable core. This reinforcing layer is woven from a mixture of aramid yarn and galvanized steel wire. This reinforcing layer, through the woven mixture of aramid yarn and galvanized steel wire, achieves a comprehensive improvement in tensile strength, compressive strength, impact resistance, and environmental resistance without increasing the cable's outer diameter or weight. Its characteristics ensure the reliability of the cable during use while also offering advantages in lightweight design and space efficiency.

[0010] Preferably, the cross-sectional area of ​​the soft copper wire is 0.3 mm². 2 The thickness of the copper wire sheath should not be less than 0.4mm. This applies to soft copper wire with a sheath thickness of 0.3mm. 2 With a precise match between the cross-sectional area and the copper wire sheath thickness of no less than 0.4mm, this design achieves an optimal balance between power transmission efficiency, mechanical strength, space utilization, and cost control. It addresses both the power supply safety of low-current devices and the needs of high-density cabling, making it particularly suitable for scenarios such as office desktops and smart homes. It provides stable power support within limited spaces while maintaining the overall lightweight and flexible advantages of the fiber optic composite cable.

[0011] Preferably, the fiber unit diameter is 0.6mm, and the fiber diameter is 125um. The fiber unit diameter of only 0.6mm is more than 33% smaller than conventional tight-buffered fiber, significantly reducing the space occupied by a single fiber unit in the cable core. Combined with an axially staggered arrangement design, more fiber units can be accommodated within the same outer diameter, or the overall cable outer diameter can be significantly compressed while maintaining the original number of fibers, thus adapting to high-density cabling scenarios.

[0012] Preferably, the outer sheath has a thickness of not less than 1.2 mm. This thickness of outer sheath enhances mechanical protection, environmental resistance, and fire resistance, thereby ensuring the cable's durability.

[0013] Preferably, at least one tear line is embedded in the inner wall of the outer sheath, with the end of the tear line extending to the outer edge of the outer sheath. The tear line is a thread made of high-strength fiber and is embedded inside the cable sheath. During cable installation, the outer sheath can be quickly cut by manually pulling the tear line, thus avoiding potential damage to the internal optical fibers or conductors that might be caused by using a blade to strip the insulation, thereby improving construction efficiency and safety.

[0014] In summary, this optical-electric composite cable structure for LAN fiber-to-the-desktop communication rationally integrates optical fibers and power lines, improving the utilization rate and roundness of internal space while ensuring functionality. This reduces production difficulties, guarantees product quality, and extends the cable's lifespan. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0016] Figure 1 This is a cross-section of the present invention. Figure 1 ;

[0017] Figure 2 This is a cross-section of the present invention. Figure 2 ;

[0018] The components are: cable core-1, optical fiber unit-11, optical fiber-111, optical fiber sheath-112, power transmission unit-12, soft copper wire-121, copper wire sheath-122, cable core filler-13, aramid fiber layer-14, outer sheath-2, and reinforcing layer-3. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] In the description of this utility model, it should be understood that the orientation and positional relationship indicated by terms such as "up", "down", "left", "right", "front", "back", "vertical", "bottom", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to 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 of this utility model.

[0021] like Figures 1 to 2 As shown, a fiber-optic composite cable structure for local area network fiber-to-the-desktop communication includes a cable core 1 and an outer sheath 2. The outer sheath 2 is fitted over the cable core 1 and has a hollow structure. The cable core 1 includes optical fiber units 11, power transmission units 12, and cable core filler 13. The optical fiber units 11 and power transmission units 12 are in contact with each other and are staggered along the axial direction of the outer sheath 2. The power transmission unit 12 includes at least two soft copper wires 121 and copper wires. The outer sheath 122 and the soft copper wires 121 are arranged at intervals. The copper wire sheath 122 is sleeved on the outside of the soft copper wires 121. At least one optical fiber unit 11 is provided. The optical fiber unit 11 includes an optical fiber 111 and an optical fiber sheath 112. The optical fiber sheath 112 is sleeved on the outside of the optical fiber 111. The optical fiber unit 11 and the power transmission unit 12 are filled with cable core filler 13 between themselves and the inner wall of the outer sheath 2. The outer sheath 2, the copper wire sheath 122 and the optical fiber sheath 112 are all low smoke halogen-free sheaths.

[0022] In this structure, the fiber optic unit 11 and the power transmission unit 12 are in contact with each other and staggered along the axis of the outer sheath 2, avoiding the waste of cross-sectional space caused by parallel arrangement between units, maximizing the utilization rate of the cable core 1 cross-section, and achieving higher density functional integration under the same outer diameter. Meanwhile, the power transmission unit 12 uses multiple thin-diameter soft copper wires 121 arranged at intervals, instead of a single rigid copper conductor, which improves the overall flexibility of the cable and avoids the additional space requirements caused by deformation when a rigid conductor bends, allowing the cable to be flexibly laid close to corners, table seams, and other complex paths. Furthermore, the sheath uses high-strength, low-smoke, halogen-free materials, which can maintain their original shape under long-term pressure, preventing space compression between adjacent cables due to sheath collapse and maintaining the spatial order of the overall cabling system. In summary, this structure achieves a high degree of integration of optoelectronic functions within a unit cross-sectional area, significantly improving space utilization efficiency. Its compact and flexible design can adapt to high-density cabling scenarios, reducing the need for pipe expansion or concealed space renovation, while also considering future expandability and avoiding duplicate space occupation problems caused by functional upgrades.

[0023] Furthermore, the cable core filler 13 is an aramid fiber layer 14, which is a honeycomb structure formed by weaving multiple aramid fibers. This mesh structure, created by weaving multiple aramid fibers, provides the cable core filler 13 with high strength support in the axial, radial, and tangential directions, simultaneously resisting multi-dimensional mechanical stresses such as tension, compression, and torsion during cable installation. The honeycomb weaving achieves isotropic mechanical properties through its porous structure, reducing weight compared to traditional solid fillers and improving the bending and resilience of the cable core filler 13, making it more suitable for scenarios involving frequent bending.

[0024] Preferably, a reinforcing layer 3 is provided between the outer sheath 2 and the cable core 1. The reinforcing layer 3 is woven from a mixture of aramid yarn and galvanized steel wire. This reinforcing layer 3, through the mixed weaving of aramid yarn and galvanized steel wire, achieves a comprehensive improvement in tensile strength, compressive strength, impact resistance, and environmental resistance without increasing the outer diameter and weight of the cable. Its characteristics not only ensure the reliability of the cable during use but also have the advantages of lightweight and space-saving design.

[0025] Preferably, the cross-sectional area of ​​the soft copper wire 121 is 0.3 mm². 2 The thickness of the copper wire sheath 122 is not less than 0.4mm. The 0.3mm thickness of the soft copper wire 121... 2 With a precise match between the cross-sectional area and the copper wire sheath thickness of no less than 0.4mm, this design achieves an optimal balance between power transmission efficiency, mechanical strength, space utilization, and cost control. It caters to both the power supply safety of low-current devices and the high-density cabling requirements, making it particularly suitable for scenarios such as office desktops and smart homes. It provides stable power support within limited spaces while maintaining the overall lightweight and flexible advantages of the fiber optic composite cable.

[0026] Preferably, the diameter of the fiber unit 11 is 0.6 mm, and the diameter of the fiber 111 is 125 μm. The diameter of the fiber unit 11 is only 0.6 mm, which is more than 33% smaller than that of conventional tight-buffered fiber, significantly reducing the space occupied by a single fiber unit 11 in the cable core. Combined with the axial staggered arrangement design, more fiber units can be accommodated with the same outer diameter, or the overall outer diameter of the cable can be greatly compressed while maintaining the original number of fibers, thus adapting to high-density cabling scenarios.

[0027] Preferably, the outer sheath 2 has a thickness of not less than 1.2 mm. This thickness of the outer sheath enhances mechanical protection, environmental resistance, and fire resistance, thereby ensuring the durability of the cable.

[0028] Preferably, at least one tear line is embedded in the inner wall of the outer sheath 2, with the end of the tear line extending to the outer edge of the outer sheath. The tear line is a thread made of high-strength fiber and is embedded inside the cable sheath. During cable installation, the outer sheath 2 can be quickly cut by manually pulling the tear line, thus avoiding potential damage to the internal optical fiber or conductor that might be caused by using a blade to strip the insulation, thereby improving construction efficiency and safety.

[0029] In summary, this optical-electric composite cable structure for LAN fiber-to-the-desktop communication rationally integrates optical fibers and power lines, improving the utilization rate and roundness of internal space while ensuring functionality. This reduces production difficulties, guarantees product quality, and extends the cable's lifespan.

[0030] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure of a LAN FTTH optical-electrical composite cable, comprising a cable core and an outer sheath, the outer sheath being sleeved outside the cable core, the outer sheath being a hollow structure, characterized in that: The cable core comprises an optical fiber unit, a power transmission unit and a cable core filler, the optical fiber unit and the power transmission unit are in contact with each other, the optical fiber unit and the power transmission unit are staggered along the outer sheath axis, the power transmission unit comprises at least two soft copper wires and a copper wire sheath, the soft copper wires are arranged at intervals, the copper wire sheath is arranged outside the soft copper wires, the optical fiber unit is provided with at least one, the optical fiber unit comprises an optical fiber and an optical fiber sheath, the optical fiber sheath is arranged outside the optical fiber, the optical fiber unit and the power transmission unit are filled with the cable core filler between the inner wall of the outer sheath, the outer sheath, the copper wire sheath and the optical fiber sheath are all low-smoke halogen-free sheaths.

2. The LAN FTTP optical-electrical hybrid cable structure of claim 1, wherein: The cable core filler is an aramid fiber layer, the aramid fiber layer is woven by a plurality of aramid fibers to form a honeycomb structure.

3. The optoelectronic composite cable structure for local area network fiber-to-the-desktop communication according to claim 1, characterized in that: A reinforcing layer is arranged between the outer sheath and the cable core, the reinforcing layer is woven by mixing aramid yarns and galvanized steel wires.

4. The optoelectronic composite cable structure for local area network fiber-to-the-desktop communication according to claim 1, characterized in that: The cross-sectional area of the soft copper wire is 0.3mm 2 The thickness of the copper wire sheath is not less than 0.4mm.

5. The optoelectronic composite cable structure for local area network fiber-to-the-desktop communication according to claim 1, characterized in that: The diameter of the optical fiber unit is 0.6mm, and the diameter of the optical fiber is 125um.

6. The LAN FTTH optical-electrical hybrid cable structure of claim 3, wherein: The thickness of the outer sheath is not less than 1.2mm.

7. The LAN FTTP optical-electrical hybrid cable structure of claim 6, wherein: At least one tear line is embedded on the inner wall of the outer sheath, and the end of the tear line extends outside the edge of the outer sheath.

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