Non-shielding network cable based on synthetic oxygen-free copper

Abstract

According to the unshielded network cable based on the synthetic oxygen-free copper provided by the utility model, the overall structure of the network cable is supported through the arrangement of the cross-shaped skeleton and the annular compression-resistant layer, and each twisted pair is limited and isolated, so that the stress applied to the outside of the network cable is dispersed, the twisted pairs are prevented from loosening and shifting, and the distortion resistance of the network cable is improved; secondly, through the arrangement of the annular pressure-resistant layer and the tensile ropes uniformly arranged in the annular pressure-resistant cavity, the external tensile force and stress of the network cable can be dispersed, and the tensile property and the pressure-resistant property of the network cable can be improved; and finally, the twisted pair is wrapped by a polytetrafluoroethylene wrapping tape, thermal protection is formed on the outer side of the twisted pair, and fireproof cotton is arranged to prevent external heat from entering, so that the network cable can be normally used under a high-temperature condition and has good high-temperature resistance. In addition, the conductor of the metal wire in the twisted pair is made of synthetic oxygen-free copper, so that the prepared network cable has high conductivity, thermal stability and good mechanical performance.

Description

Technical Field

[0001] This utility model relates to the field of network cable manufacturing technology, and in particular to an unshielded network cable based on synthetic oxygen-free copper. Background Technology

[0002] Unshielded network cables are network cables without a metal shielding layer. They use a spiral winding design of twisted pairs to cancel out electromagnetic interference and are often used in scenarios with less electromagnetic interference, such as home networks, offices, and security monitoring.

[0003] In practical use, the heat generated by equipment in the external environment is often conducted to the surface of the unshielded network cable, causing it to be in a high-temperature environment. This can easily lead to aging and cracking of the cable shell, resulting in decreased performance and reduced lifespan. Furthermore, during use, the relocation and cabling of the network cable can cause bending and stretching. Repeated bending and stretching can also lead to aging and cracking of the cable shell, affecting its normal performance and further reducing its lifespan.

[0004] Therefore, it is necessary to provide a network cable that is resistant to high temperatures and tensile strength, so that the network cable can maintain good working performance over a long period of time. Utility Model Content

[0005] In view of the technical problem that network cables in the prior art are prone to performance degradation and shortened service life due to high temperature environment and repeated bending and stretching during use, this utility model provides an unshielded network cable based on synthetic oxygen-free copper.

[0006] An unshielded network cable based on synthetic oxygen-free copper includes a wire core, a thermally conductive rubber layer and a PVC sheath sequentially wrapped around the wire core; the wire core includes a cross-shaped skeleton and an annular pressure-resistant layer covering the outside of the cross-shaped skeleton; the cross-shaped skeleton divides the internal space of the annular pressure-resistant layer into four accommodating cavities, each cavity containing a twisted pair of wires, and the outside of the twisted pair of wires is wrapped with a polytetrafluoroethylene (PTFE) tape; fireproof cotton is filled between the inside of the accommodating cavity and the PTFE tape; each twisted pair of wires includes two intertwined metal conductors, each metal conductor including a conductor and an insulating layer covering the conductor, and the conductor is made of synthetic oxygen-free copper; an annular pressure-resistant cavity is formed between the thermally conductive rubber layer and the PVC sheath, and a plurality of tensile ropes are uniformly filled in the annular pressure-resistant cavity, with the two sides of the tensile ropes fixedly connected to the outside of the thermally conductive rubber layer and the inside of the PVC sheath, respectively.

[0007] Furthermore, the synthesized oxygen-free copper is oxygen-free copper or an oxygen-free copper alloy.

[0008] Furthermore, the oxygen-free copper alloy is an oxygen-free copper-zinc-magnesium alloy.

[0009] Furthermore, the tensile rope includes an aramid fiber core and high molecular weight polyethylene fiber strands twisted around the aramid fiber core, and a polyurethane protective layer is also provided on the outer side of the tensile rope.

[0010] Furthermore, a high-temperature resistant and flame-retardant layer is provided between the tensile rope and the PVC sheath layer.

[0011] Furthermore, the high-temperature resistant flame-retardant layer is made of glass fiber wound and woven.

[0012] Furthermore, the insulating layer is a high-density polyethylene insulating layer.

[0013] The beneficial effects of this utility model are as follows: This utility model provides an unshielded network cable based on synthetic oxygen-free copper. The cross-shaped skeleton and annular pressure-resistant layer provide support for the overall structure of the network cable and limit and isolate each twisted pair, which helps to disperse the external stress on the network cable, preventing the twisted pairs from loosening and shifting, thereby improving the network cable's anti-torsion performance. Secondly, the annular pressure-resistant layer and the anti-tensile ropes evenly distributed within the annular pressure-resistant cavity help to disperse external tensile force and stress on the network cable, improving its tensile and pressure resistance. Finally, the use of PTFE tape to wrap the twisted pairs forms thermal protection on the outside of the twisted pairs; and the inclusion of fireproof cotton not only prevents damage from compression and bending of the twisted pairs but also effectively isolates external heat conduction, allowing the network cable to function normally under high-temperature conditions and possessing good high-temperature resistance. Furthermore, the conductors of the metal wires in the twisted pairs are made of synthetic oxygen-free copper, giving the network cable not only high conductivity and thermal stability but also good mechanical and electromagnetic properties. Attached Figure Description

[0014] Figure 1 This invention provides a structural schematic diagram of an unshielded mesh cable based on synthetic oxygen-free copper.

[0015] Figure 2 A schematic diagram of the tensile rope structure provided by this utility model.

[0016] Attached Figure

[0017] 1. Thermally conductive rubber layer; 2. PVC sheath; 3. Cross skeleton; 4. Annular pressure-resistant layer; 5. Twisted pair; 51. Metal wire; 511. Conductor; 512. Insulation layer; 6. PTFE tape; 7. Fireproof cotton; 8. Annular pressure-resistant cavity; 9. Tension rope; 91. Aramid fiber rope core; 92. High molecular weight polyethylene fiber strand; 93. Polyurethane protective layer; 10. Reinforcing rib; 12. High temperature flame retardant layer. Detailed Implementation

[0018] To provide a more detailed description of this utility model, the following description is provided in conjunction with the accompanying drawings. It should be noted that the embodiments described below are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0019] refer to Figure 1 As shown, an unshielded network cable based on synthetic oxygen-free copper includes a wire core (not shown in the figure) and a thermally conductive rubber layer 1 and a PVC sheath 2 sequentially wrapped around the outside of the wire core.

[0020] Thermally conductive rubber possesses excellent thermal conductivity, enabling it to quickly and evenly distribute and conduct the heat generated by the wire core in high-temperature environments to the external environment, preventing heat accumulation that could lead to melting of the internal insulation layer or signal attenuation. The PVC sheath provides a certain degree of waterproofing, dustproofing, and UV protection, protecting the internal wire core from external physical damage and chemical corrosion.

[0021] Specifically, the core includes a cross-shaped frame 3 and an annular pressure-resistant layer 4 covering the outside of the cross-shaped frame 3; the cross-shaped frame 3 divides the internal space of the annular pressure-resistant layer 4 into four receiving cavities, each of which contains a twisted pair 5. In this embodiment, both the cross-shaped frame 3 and the annular pressure-resistant layer 4 are made of polyethylene material.

[0022] The cross-shaped frame 3 divides the internal space of the annular pressure-resistant layer into four independent cavities, providing space for the twisted-pair cables and supporting the overall structure of the network cable. This effectively limits and isolates each twisted-pair cable 5, reducing electromagnetic interference between them to improve signal transmission quality. Simultaneously, it prevents the twisted-pair cables 5 from deforming or shifting under stress, such as tension or bending, ensuring signal transmission stability. The outer annular pressure-resistant layer 4 evenly distributes external pressure, preventing the twisted-pair cables 5 from loosening or shifting under stress, thus improving the network cable's anti-torsion performance. The polyethylene material itself possesses excellent electrical insulation and flexibility, further blocking external electromagnetic interference while providing pressure resistance, ensuring signal integrity.

[0023] Each twisted pair 5 comprises two intertwined metal wires 51. Each metal wire 51 includes a conductor 511 and an insulating layer 12 covering the conductor 511. The conductor 511 is made of synthetic oxygen-free copper. In this embodiment, the synthetic oxygen-free copper is oxygen-free copper or an oxygen-free copper alloy; the oxygen-free copper alloy is an oxygen-free copper-zinc-magnesium alloy. The insulating layer 512 is a high-density polyethylene insulating layer.

[0024] The twisted pair 5 uses balanced twisting to counteract external electromagnetic interference, combined with a high-density polyethylene insulation layer, to improve the signal-to-noise ratio. The twisted structure makes the conductors flexible and easy to bend, facilitating bending and stretching during network cable installation, while reducing installation stress damage to conductor 511. Conductor 511, made of oxygen-free copper or an oxygen-free copper alloy, possesses high conductivity, good thermal stability, and oxidation resistance, as well as good mechanical properties, effectively reducing signal attenuation, improving data transmission rate and stability, and extending the lifespan of the twisted pair 5.

[0025] The oxygen-free copper alloy uses an oxygen-free copper-zinc-magnesium alloy, which further improves the mechanical strength and corrosion resistance of the conductor 511, resulting in better overall performance.

[0026] The outside of the twisted pair 5 is wrapped with a polytetrafluoroethylene (PTFE) tape 6; the inside of the receiving cavity and the PTFE tape 6 are filled with fireproof cotton 7.

[0027] Polytetrafluoroethylene (PTFE) possesses excellent high-temperature resistance and insulation properties. PTFE tape (6) is used to wrap the twisted-pair cable, forming thermal protection and electrical insulation on the outside of the twisted-pair cable (3), which helps improve the overall high-temperature resistance of the network cable. Fire-retardant cotton rapidly expands and carbonizes at high temperatures, forming a dense heat-insulating layer that prevents heat from the external environment from being conducted into the network cable, causing a rapid increase in the internal temperature. Therefore, the inclusion of fire-retardant cotton (7) not only increases the density of the network cable and prevents damage from compression and bending of the twisted-pair cable (3), but also effectively insulates against external heat, allowing the network cable to function normally under high-temperature conditions and exhibiting excellent high-temperature resistance.

[0028] An annular pressure-resistant cavity 8 is formed between the thermally conductive rubber layer 1 and the PVC sheath 2. The annular pressure-resistant cavity 8 is uniformly filled with a plurality of tensile ropes 9, and the two sides of the tensile ropes 9 are fixedly connected to the outer side of the thermally conductive rubber layer 1 and the inner side of the PVC sheath 2, respectively.

[0029] The annular pressure-resistant cavity 8 can provide buffer for the network cable under bending, stretching or external pressure compression, and improve the overall pressure resistance of the network cable; the anti-tension ropes 9 uniformly arranged in the annular pressure-resistant cavity 9 can not only improve the tensile strength of the network cable, but also help to disperse the external tension and stress of the network cable, and improve the tensile and pressure resistance of the network cable.

[0030] Among them, reference Figure 2 As shown, the tensile rope 9 includes an aramid fiber core 91 and a high molecular weight polyethylene fiber strand 92 twisted around the aramid fiber core. A polyurethane protective layer 93 is also provided on the outside of the tensile rope 9.

[0031] The aramid fiber core 91 provides high tensile strength, which, combined with the outer high molecular weight polyethylene fiber strands 92, further enhances the tensile properties and overall strength of the tensile rope 9, ensuring controllable deformation under stress. The polyurethane protective layer 93 protects the internal fibers from environmental factors while possessing a certain degree of flexibility and improving the high-temperature resistance of the tensile rope 9.

[0032] refer to Figure 1 As shown, in some embodiments, a high-temperature resistant flame-retardant layer 12 is further provided between the tensile rope 9 and the PVC sheath layer 2. The high-temperature resistant flame-retardant layer 12 is made of glass fiber winding and weaving. By setting the high-temperature resistant flame-retardant layer 12, the spread of external flames can be effectively prevented, protecting the internal tensile rope 9 and other network structures from high-temperature damage.

[0033] This invention provides an unshielded network cable based on synthetic oxygen-free copper. The cross-shaped skeleton 3 and the annular pressure-resistant layer 4 provide support for the overall structure of the network cable. Tensile ropes 9, evenly distributed within the annular pressure-resistant cavity 8, help disperse external tension and stress, improving the cable's tensile and pressure resistance. Simultaneously, polytetrafluoroethylene (PTFE) tape 6 wraps the twisted pair 5, forming thermal protection on its outer surface. Fireproof cotton 7 prevents damage from compression and bending of the twisted pair 3 while effectively isolating external heat, allowing the network cable to function normally under high-temperature conditions and exhibiting excellent high-temperature resistance.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model and do not limit the utility model to the specific implementations described. Obviously, other modifications and variations can be made based on the content of this specification. The embodiments selected and specifically described in this specification are intended to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. They are not intended to limit the utility model, and any simple modifications to this utility model fall within the protection scope of this utility model.

Claims

1. An unshielded network cable based on synthetic oxygen-free copper, characterized in that, It includes a wire core, a thermally conductive rubber layer and a PVC sheath sequentially wrapped around the outside of the wire core; The core wire includes a cross-shaped skeleton and an annular pressure-resistant layer covering the outside of the cross-shaped skeleton; the cross-shaped skeleton divides the internal space of the annular pressure-resistant layer into four accommodating cavities, each accommodating cavity is provided with a twisted pair wire, and the outside of the twisted pair wire is wrapped with a polytetrafluoroethylene (PTFE) tape; fireproof cotton is filled between the inside of the accommodating cavity and the PTFE tape. The twisted pair cable includes two intertwined metal wires, each metal wire including a conductor and an insulating layer covering the conductor, and the conductor is made of synthetic oxygen-free copper. A high-temperature resistant and flame-retardant layer is provided between the thermally conductive rubber layer and the PVC sheath. An annular pressure-resistant cavity is formed between the thermally conductive rubber layer and the high-temperature resistant and flame-retardant layer. A number of tensile ropes are uniformly filled in the annular pressure-resistant cavity, and the two sides of the tensile ropes are fixedly connected to the outer side of the thermally conductive rubber layer and the inner side of the high-temperature resistant and flame-retardant layer, respectively.

2. The unshielded network cable based on synthetic oxygen-free copper according to claim 1, characterized in that, The synthesized oxygen-free copper is oxygen-free copper or an oxygen-free copper alloy.

3. The unshielded network cable based on synthetic oxygen-free copper according to claim 2, characterized in that, The oxygen-free copper alloy is an oxygen-free copper-zinc-magnesium alloy.

4. The unshielded network cable based on synthetic oxygen-free copper according to claim 1, characterized in that, The tensile rope includes an aramid fiber core and high molecular weight polyethylene fiber strands twisted around the aramid fiber core. A polyurethane protective layer is also provided on the outside of the tensile rope.

5. The unshielded network cable based on synthetic oxygen-free copper according to claim 1, characterized in that, The high-temperature resistant and flame-retardant layer is made of glass fiber wound and woven.

6. The unshielded network cable based on synthetic oxygen-free copper according to claim 1, characterized in that, The insulation layer is a high-density polyethylene insulation layer.

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