Light high-temperature-resistant flame-retardant data cable

Abstract

The utility model discloses a light-weight high-temperature-resistant flame-retardant data cable. A cable core is formed by twisting four groups of 2 * 0.2 mm < 2 > light-weight high-temperature data lines, a foaming high-strength filling line and an alloy ground wire; an FEP foaming inner protection layer, a polyimide silver composite film shielding layer, a synthetic mica tape flame-retardant layer and an FEP sheath are sequentially arranged outside the cable core. According to the structural design, the cable is enabled to have flame retardance, and the cable is enabled to be rounder in appearance, smaller in outer diameter, lighter in weight and higher in strength.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a light, high-temperature-resistant and flame-retardant data cable. Background Art

[0002] Existing ordinary data cables have a large outer diameter and are too heavy, and cannot meet the occasions where users have strict requirements on cable size and weight during use.

[0003] Ordinary data cables generally use a wrapped or solid extruded insulation structure, a braided metal wire shield, and a wrapped or solid extruded sheath. This structure results in excessive weight and outer diameter. Existing ordinary data cables are generally unable to meet the stringent requirements for cable size and weight in aviation, weaponry, and shipbuilding applications.

[0004] Existing ordinary data cables have a narrow operating temperature range and are not suitable for environments with large temperature fluctuations or high temperatures. The materials used in the conductors, insulation, shielding, and sheathing of ordinary data cables have relatively low temperature resistance. In cabins with large temperature fluctuations or high temperatures, the cable sheath and insulation will soften and deform, reducing the cable transmission performance and causing the cable to fail and become unusable.

[0005] Existing ordinary data cables have poor flame retardancy and generally cannot be used under conditions with flame retardancy requirements; the flame retardancy of the cables is not taken into consideration during the structural design and material selection of ordinary data cables, so no heat-insulating and flame-retardant sheath is designed into the product structure; the flame retardancy of the materials used in cable manufacturing is also not fully considered when selecting them, so when the product has flame retardancy requirements or is exposed to burning conditions, the cable sheath and cable core will quickly melt or even burn violently, causing cable failure, and in serious cases, affecting the safety of the entire system. Utility Model Content

[0006] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a lightweight, high-temperature resistant, flame-retardant data cable for use in control systems in the fields of aviation, weapons and equipment, and ships, which is a high-temperature, flame-retardant data cable suitable for data transmission.

[0007] The utility model provides a light high temperature resistant flame retardant data cable, comprising 4 groups of 2×0.2mm 2 The cable core consists of a light high-temperature data cable, a foamed high-strength filling wire and an alloy ground wire stranded cable; the outer side of the cable core is provided with an FEP foamed inner sheath, a polyimide silver composite film shielding layer, a synthetic mica tape flame retardant layer and an FEP sheath in sequence.

[0008] Furthermore, the foamed high-strength filling line is set in 4 groups of 2×0.2mm 2The center of the light high temperature data line; the alloy ground wire is set in two groups of 2×0.2mm 2 Between light high temperature data lines.

[0009] Furthermore, the 2×0.2 mm 2 The lightweight high-temperature data cable consists of two insulating cores, an FEP foam dielectric layer and a polyimide silver composite film sub-shielding layer; the FEP foam dielectric layer is extruded on the outside of the two insulating cores, and the polyimide silver composite film sub-shielding layer is wrapped around the outside of the FEP foam dielectric layer.

[0010] Furthermore, the insulating core includes a conductor composed of several silver-plated copper alloy conductive cores, and a layer of FEP foam insulation layer is provided on the outside of the conductor.

[0011] Furthermore, the foamed high-strength filling wire includes a conductor composed of a silver-plated copper alloy conductive wire core, and a layer of FEP foaming sheath is extruded outside the conductor.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model discloses a lightweight, high-temperature-resistant, flame-retardant data cable, in which the conductor is a silver-plated copper alloy conductive core. This conductor has excellent electrical conductivity and is also characterized by high-temperature resistance, small size, and light weight. The insulation layer adopts an extruded FEP foam structure. Since nitrogen is injected into the insulation of the product, the dielectric constant of the insulation is reduced, making the outer diameter of the product smaller and the weight lighter. The dielectric layer adopts foamed FEP, which makes the cable core lighter and the temperature range of FEP as insulation is wide. The core filling adopts a silver-plated copper alloy conductive core extruded with an FEP foam sheath. This structure has the advantages of small size, light weight, high strength, and can effectively reduce the weight of the product. The shield adopts a polyimide silver composite film. This design makes the outer diameter of the cable core smaller and the weight lighter.

[0014] The utility model adopts the center filling method when twisting the cable, and the 4 groups of 2×0.2mm 2 A foamed high-strength filling wire is added to the center of the light high-temperature data cable. The foamed high-strength filling wire is designed with full consideration of its tensile strength and lightweight requirements in structural design and material selection. The inner core is composed of a silver-plated copper alloy conductive wire core, and the outer core is extruded with foamed FEP; in 2 groups of 2×0.2mm 2 The gaps between the lightweight high-temperature data cables are filled with alloy ground wires. This material selection and structural design not only ensures the product's temperature resistance and tensile strength, but also makes the cable core more round and smaller in size.

[0015] The utility model sequentially provides an FEP foam inner protective layer, a polyimide silver composite film shielding layer, and a synthetic mica tape flame retardant layer outside the cable core. This structural design ensures the overall temperature resistance level of the cable while making the overall cable lighter and more flame retardant.

[0016] It should be understood that the contents described in the summary of the utility model are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model.

[0017] Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 A schematic structural diagram of a lightweight, high-temperature-resistant, flame-retardant data cable provided by an embodiment of the present utility model;

[0020] Figure 2 2×0.2mm 2 Schematic diagram of the structure of a lightweight high-temperature data cable;

[0021] Figure 3 It is a structural diagram of the foamed high-strength filling line;

[0022] Numbers in the figure: 1, cable core;

[0023] 11. 2×0.2mm 2 Lightweight high-temperature data cable; 111, insulated core; 1111, silver-plated copper alloy conductive core; 1112, FEP foam insulation layer; 112, FEP foam dielectric layer; 113, polyimide silver composite film shielding layer;

[0024] 12. Foamed high-strength filling wire; 121. Silver-plated copper alloy conductive wire core 2; 122. FEP foam sheath;

[0025] 13. Alloy ground wire;

[0026] 2. FEP foam inner protective layer; 3. Polyimide silver composite film shielding layer; 4. Synthetic mica tape flame retardant layer; 5. FEP sheath. DETAILED DESCRIPTION

[0027] The present invention 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 intended only to illustrate the relevant utility model and are not intended to limit the scope of the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Please refer to Figures 1 to 3 The embodiment of the utility model provides a light-weight high-temperature resistant flame-retardant data cable, comprising 4 groups of 2×0.2mm 2 The cable core 1 is composed of a light high-temperature data line 11, a foamed high-strength filling line 12 and an alloy ground wire 13 twisted into a cable; the outer side of the cable core 1 is provided with an FEP foam inner protective layer 2, a polyimide silver composite film shielding layer 3, a synthetic mica tape flame retardant layer 4 and an FEP sheath 5 in sequence.

[0030] In a preferred embodiment, the foamed high strength filling lines 12 are arranged in 4 groups of 2×0.2 mm 2 The center of the light high temperature data line 11; the alloy ground line 13 is set in two groups of 2×0.2mm 2 Between the light high-temperature data lines 11; an FEP foam inner sheath 2 is extruded outside the cable core 1, a polyimide silver composite film shielding layer 3 is wrapped outside the FEP foam inner sheath, a synthetic mica tape flame retardant layer 4 is wrapped outside the polyimide silver composite film shielding layer 3, and an FEP sheath 5 is extruded outside the synthetic mica tape flame retardant layer 4.

[0031] The utility model adopts the center filling method when twisting the cable, and the 4 groups of 2×0.2mm 2 A foamed high-strength filling wire 12 is added to the center of the light high-temperature data cable 11. The foamed high-strength filling wire 12 is designed with full consideration of its tensile strength and lightweight requirements in structural design and material selection. Its inner core is composed of a silver-plated copper alloy conductive wire core 121, and an FEP foam sheath 122 is extruded outside the inner core; in two groups of 2×0.2mm 2 The gaps between the light high-temperature data cables 11 are filled with alloy ground wires 13. This material selection and structural design not only ensures the product's temperature resistance and tensile strength, but also makes the cable core 1 more rounded and smaller in size.

[0032] In a preferred embodiment, 2×0.2 mm 2 The lightweight high-temperature data cable 11 consists of two insulating cores 111, an FEP foam dielectric layer 112 and a polyimide silver composite film sub-shielding layer 113; the FEP foam dielectric layer 112 is extruded on the outside of the two insulating cores 111, and the polyimide silver composite film sub-shielding layer 113 is wrapped around the outside of the FEP foam dielectric layer 112.

[0033] In a preferred embodiment, the insulated core 111 includes a conductor composed of several silver-plated copper alloy conductive cores 1111, and a layer of FEP foam insulation layer 1112 is extruded on the outside of the conductor.

[0034] In a preferred embodiment, the foamed high-strength filling wire 12 includes a conductor composed of a silver-plated copper alloy conductive wire core 121, and a FEP foam sheath 122 is extruded outside the conductor.

[0035] The conductor, insulation layer, sheath, and shield of this utility model are designed and made of materials with full consideration given to cable transmission performance and miniaturization. Nitrogen is evenly injected into the insulation during extrusion of the insulation layer, thereby reducing the dielectric constant of the insulation, making the insulation outer diameter smaller and lighter. The core filling is made of a silver-plated copper alloy conductive wire core and an FEP foam sheath extruded outside. During extrusion, the outer diameter of the core filling is more stable by controlling the length of the extruded cone and delaying cooling.

[0036] When wrapping the polyimide silver composite film shielding layer 3 and the synthetic mica tape flame retardant layer 4, a cable core stabilizer is installed to stabilize the film movement trajectory during cable wrapping. At the same time, after wrapping, the cable core passes through a conical mold to make the cable more round and the overall size of the cable smaller. At the same time, it also has excellent high temperature resistance and flame retardant properties.

[0037] In this specification, the terms "connect," "install," and "fix" should be understood broadly. For example, "connect" can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0038] Throughout this specification, terms such as "one embodiment" or "some embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0039] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A lightweight, high-temperature-resistant, flame-retardant data cable, characterized in that: Includes 4 sets of 2×0.2mm 2 The cable core consists of a light high-temperature data cable, a foamed high-strength filling wire and an alloy ground wire stranded cable; the outer side of the cable core is provided with an FEP foamed inner sheath, a polyimide silver composite film shielding layer, a synthetic mica tape flame retardant layer and an FEP sheath in sequence.

2. The lightweight high temperature resistant flame retardant data cable according to claim 1, characterized in that: The foamed high-strength filling line is set in 4 groups of 2×0.2mm 2 The center of the light high temperature data line; the alloy ground wire is set in two groups of 2×0.2mm 2 Between light high temperature data lines.

3. The lightweight high temperature resistant flame retardant data cable according to claim 1, characterized in that: 2×0.2mm 2 The lightweight high-temperature data cable consists of two insulating cores, an FEP foam dielectric layer and a polyimide silver composite film sub-shielding layer; the FEP foam dielectric layer is extruded on the outside of the two insulating cores, and the polyimide silver composite film sub-shielding layer is wrapped around the outside of the FEP foam dielectric layer.

4. The lightweight high-temperature resistant flame-retardant data cable according to claim 3, characterized in that: The insulated wire core comprises a conductor composed of a plurality of silver-plated copper alloy conductive wire cores, and a layer of FEP foam insulation layer is provided on the outer side of the conductor.

5. The lightweight high temperature resistant flame retardant data cable according to claim 1, characterized in that: The foamed high-strength filling wire comprises a conductor composed of two silver-plated copper alloy conductive wire cores, and a layer of FEP foaming protective layer is extruded outside the conductor.

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