CN-224232397-U - Photoelectric composite cable suitable for unmanned aerial vehicle platform

CN224232397UCN 224232397 UCN224232397 UCN 224232397UCN-224232397-U

Abstract

The utility model relates to a photoelectric composite cable suitable for an unmanned aerial vehicle platform, which comprises a wrapping layer formed by wrapping a covering film, wherein an accommodating space is formed in the wrapping layer, electric units with two cores and single-mode fibers with one core are respectively arranged in the accommodating space, a plurality of aramid fibers are also distributed in the accommodating space to be filled into a cable, an insulating layer is distributed on each electric unit, an outer wrapping layer is distributed on each single-mode fiber, the insulating layer, the outer wrapping layer and the covering film are made of high-temperature resistant fluoroplastic formed by ethylene-tetrafluoroethylene copolymer, the thickness of the covering film is 0.05mm, the total thickness of the wrapped covering film is 0.10mm plus or minus 0.02mm, the outer diameter of the photoelectric composite cable is 2.2mm plus or minus 0.1mm, and the total weight of each meter is less than or equal to 12g. Therefore, the whole photoelectric composite cable has better high-temperature resistance, can meet the high tensile strength under light weight, can realize low-loss signal transmission, and has better heat dissipation effect.

Inventors

LV YING
LUO WENJUN
ZHANG YASHAN
JIN ZHIJIE
LIU SHUQUAN
LIU JIAHAO

Assignees

昆山频谱电子科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250512

Claims (2)

1. The photoelectric composite cable suitable for the unmanned aerial vehicle platform comprises a wrapping layer formed by wrapping a covering film (4), and is characterized in that an accommodating space is formed in the wrapping layer, two-core electric units (1) and one-core single-mode optical fibers (2) are respectively arranged in the accommodating space, a plurality of aramid fibers (3) are distributed in the accommodating space to be filled into a cable, an insulating layer (5) is distributed in the electric units (1), an outer wrapping layer (6) is distributed in the single-mode optical fibers (2), the insulating layer (5), the outer wrapping layer (6) and the covering film (4) are made of high-temperature-resistant fluoroplastic formed by ethylene-tetrafluoroethylene copolymer, the thickness of the covering film (4) is 0.05mm, the total thickness after wrapping is 0.10mm plus or minus 0.02mm, the outer diameter of the photoelectric composite cable is 2.2mm plus or minus 0.1mm, and the total weight per meter is less than or equal to 12 g. The conductor (7) of the electric unit (1) is formed by 19 tinned copper wire stranded wires with the diameter of 0.15mm, the strand pitch ratio is less than or equal to 12 times, and the resistance of the conductor (7) is less than or equal to 50 ohm/km; The single-mode optical fiber (2) is a G657A2 type bending insensitive optical fiber, the total outer diameter including an outer cladding (6) is 0.5mm, and the attenuation value at 1310nm and 1550nm wavelengths is less than or equal to 0.3dB/km; the number of the aramid fibers (3) is 6, and the aramid fibers are respectively and symmetrically distributed in the accommodating space in a circumferential manner; The covering film (4) is provided with a plurality of micropores with the aperture of 5-20 mu m, and the covering film (4) is wrapped by a pre-pressing and extending molding process to form a wrapping layer; The micropores are formed by a laser etching process, and the density of the micropores is 50-200 micropores/cm < 2 >; A buffer layer formed by silicon rubber is distributed between the wrapping layer and the aramid fiber (3) filling layer, the thickness of the buffer layer is 0.2mm, and the Shore hardness is 40 A+/-5A.
2. The photoelectric composite cable for unmanned aerial vehicle platforms according to claim 1, wherein the thickness of the insulating layer (5) is 0.1mm + -0.02 mm.

Description

Photoelectric composite cable suitable for unmanned aerial vehicle platform Technical Field The utility model relates to a cable for an unmanned aerial vehicle, in particular to a photoelectric composite cable suitable for an unmanned aerial vehicle platform. Background For the existing unmanned aerial vehicle platform, in order to meet the requirement that the unmanned aerial vehicle stays in the air for a long time, corresponding cables are often connected. However, in the prior art, the insulation material of the conventional unmanned aerial vehicle cable has insufficient temperature resistance. For example, in the prior art CN201130549Y, a fluoroplastic insulated high-temperature-resistant anti-corrosion cable and a cable structure with a poly perfluoroethylene propylene (FEP) insulating layer are disclosed, which can allow the working temperature to be more than 200 ℃ for a long time, but the patent does not relate to the requirements of light weight, heat dissipation and photoelectric composite transmission in the application scene of an unmanned aerial vehicle platform. Conventional materials such as polyvinyl chloride (PVC) or crosslinked polyethylene (XLPE) are usually in a temperature resistant range of-10 ℃ to 90 ℃, and are easy to age under the high-power working condition of the unmanned aerial vehicle, so that the spontaneous combustion risk of the cable is caused. Meanwhile, the currently adopted optical fiber coating material has limited temperature resistance, such as an optical fiber coating die, an optical fiber coating platform and a high-temperature resistant optical fiber provided by the prior art CN 222093872U. The fluoroplastic coating is adopted to improve the temperature resistance of the optical fiber, but the coating process is not optimized for the problems of mechanical strength and high-temperature attenuation of the unmanned aerial vehicle under dynamic load. Conventional optical fiber coating materials (e.g., acrylates) are subject to thermal deformation in environments above 75 ℃ resulting in excessive attenuation of the optical signal. Moreover, the existing cables are not ideal in light weight, tensile strength and other effects, and the wrapping layer of the existing cables still adopts the traditional extrusion molding sheath, so that the external diameter of the cable is larger (more than or equal to 5.8 mm) and the heat dissipation performance of the cable is insufficient, and the requirement of long-time air stagnation of the unmanned aerial vehicle on the cable weight of less than or equal to 12g/m cannot be met. In view of the above-mentioned drawbacks, the present designer is actively researched and innovated to create a photoelectric composite cable suitable for an unmanned aerial vehicle platform, so that the photoelectric composite cable has more industrial utilization value. Disclosure of utility model In order to solve the technical problems, the utility model aims to provide a photoelectric composite cable suitable for an unmanned aerial vehicle platform. The photoelectric composite cable suitable for the unmanned aerial vehicle platform comprises a wrapping layer formed by wrapping a covering film, wherein an accommodating space is formed in the wrapping layer, two-core electric units and one-core single-mode optical fibers are respectively placed in the accommodating space, a plurality of aramid fiber filled cables are further distributed in the accommodating space, an insulating layer is distributed on each electric unit, an outer wrapping layer is distributed on each single-mode optical fiber, the insulating layer, the outer wrapping layer and the covering film are made of high-temperature resistant fluoroplastic made of ethylene-tetrafluoroethylene copolymer, the thickness of the covering film is 0.05mm, the total thickness of the wrapped covering film is 0.10mm plus or minus 0.02mm, the outer diameter of the photoelectric composite cable is 2.2mm plus or minus 0.1mm, and the total weight of each meter is less than or equal to 12g. Further, the photoelectric composite cable suitable for the unmanned aerial vehicle platform is characterized in that the conductor (7) of the electric unit (1) is formed by 19 tinned copper wire strands with diameters of 0.15mm, the strand pitch ratio is less than or equal to 12 times, and the resistance of the conductor (7) is less than or equal to 50 ohm/km. Furthermore, the optical-electrical composite cable suitable for the unmanned aerial vehicle platform is characterized in that the single-mode optical fiber is a G657A2 type bending insensitive optical fiber, the total outer diameter including the outer cladding is 0.5mm, and the attenuation value at 1310nm and 1550nm wavelengths is less than or equal to 0.3dB/km. Furthermore, the photoelectric composite cable suitable for the unmanned aerial vehicle platform is characterized in that 6 aramid fibers are respectively and symmetrically distributed in the accommodating sp