Ultra-light high-strength cable for unmanned aerial vehicle

Abstract

The utility model discloses an ultra-light high-strength cable for an unmanned aerial vehicle. The filling strip is located in the center of the cable, the plurality of power transmission core wires are arranged around the filling strip as the center, one signal wire transmission unit and two filling strips are arranged on the side, away from the center, between every two adjacent power transmission core wires, and one filling strip is arranged on each of the two sides of each signal wire transmission unit; the signal line transmission units, the power transmission core wires and the filling strips are integrated to form a cable, the cable is wrapped by an expanded polytetrafluoroethylene EPTFE belt, the expanded polytetrafluoroethylene EPTFE belt is wrapped by a circle of braided shielding layer, and the braided shielding layer is wrapped by a sheath. The unmanned aerial vehicle is ingenious in structural design, the structure is stable, meanwhile, light-weight, high-strength and high-weather-resistance special materials are adopted, the carrying capacity of the unmanned aerial vehicle is improved, and the stability and safety of a signal and power transmission system of the unmanned aerial vehicle in the severe environment are guaranteed. And important support and guarantee are provided for the improvement of the unmanned aerial vehicle technology and the expansion of the application field.

Description

Technical Field

[0001] The utility model relates to the technical field of wires and cables, and in particular to an ultra-light and high-strength cable for unmanned aerial vehicles. Background Art

[0002] In recent years, drone technology has made significant progress, significantly improving flight stability, endurance, and payload capacity. These advancements have opened up new possibilities for drone applications in a wide range of fields, including military and agricultural sectors. However, they have also placed higher demands on cables—critical drone components. Traditional cables, due to their heavy weight, low strength, and poor weather resistance, have struggled to meet the demands of modern drone development. The emergence of ultra-lightweight, high-strength cables addresses these shortcomings and offers new possibilities for the development of drone technology. Utility Model Content

[0003] In order to solve the problems existing in the background technology, the utility model provides an ultra-lightweight and high-strength cable for a drone.

[0004] The technical solution adopted in this utility model is:

[0005] The utility model includes a signal line transmission unit, a power transmission insulating core wire, a filling bar, an expanded polytetrafluoroethylene (EPTFE) tape, a braided shielding layer and a sheath; the filling bar is located at the center of the cable, and multiple power transmission insulating core wires are arranged around the filling bar as the center. A signal line transmission unit and two filling bars are provided between every two adjacent power transmission core wires on the side away from the center, and a filling bar is also provided on both sides of the signal line transmission unit; the signal line transmission unit, the power transmission insulating core wire and the filling bar are assembled into a cable, and the expanded polytetrafluoroethylene (EPTFE) tape is coated on the outside of the cable, the expanded polytetrafluoroethylene (EPTFE) tape is coated on the outside of the braided shielding layer, and the braided shielding layer is coated on the outside of the sheath.

[0006] The signal line transmission unit mainly consists of a silver-plated alloy copper conductor, an insulating material, a tinned copper braided layer and an FEP sheath from the inside to the outside. The insulating material is covered on the outside of the silver-plated alloy copper conductor, the tinned copper braided layer is covered on the outside of the insulating material, and the FEP sheath is covered on the outside of the tinned copper braided layer.

[0007] The power transmission insulating core wire is mainly composed of a silver-plated copper alloy conductor and an insulating material covering the silver-plated copper alloy conductor.

[0008] The insulating materials of the signal line transmission unit and the power transmission insulating core wire are both fluorinated ethylene propylene copolymer FEP.

[0009] The filling strip is made of Kevlar fiber.

[0010] The expanded polytetrafluoroethylene (EPTFE) tape is made of expanded polytetrafluoroethylene (EPTFE).

[0011] The braided shielding layer is braided with aluminum-magnesium alloy wires.

[0012] The sheath is made of ethylene-tetrafluoroethylene copolymer ETFE.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. As an improvement of the present invention: the signal line and power line conductors are designed to adopt high electrical conductivity, high thermal conductivity, high strength, low density silver-plated alloy copper conductors, which can reduce the attenuation of signal and power transmission of drones and reduce the weight of cables.

[0015] 2. As an improvement of the present invention: the signal line insulation and power line insulation material are made of fluorinated ethylene propylene copolymer FEP. The higher melt index can ensure the melt fluidity, minimize the insulation thickness (reduce the overall cable diameter), and reduce the cable weight. In addition, fluorinated ethylene propylene copolymer FEP has high insulation properties, reducing the risk of electrical breakdown and leakage, and ensuring the safety of the drone during long-term operation.

[0016] 3. As an improvement of the present invention: the center and peripheral fillings are filled with Kevlar fiber components, which can effectively resist the stretching and friction of the cable during the operation of the drone, improve the tensile strength of the cable, and its good flexibility can maintain the stability and integrity of the structure and reduce the risk of breakage due to stretching.

[0017] 4. It is coated with expanded polytetrafluoroethylene (EPTFE) tape, which can withstand the erosion of various strong acids, strong alkalis and organic solvents. It has high temperature and high pressure resistance and can maintain a stable sealing effect in harsh working environments.

[0018] 5. The outer sheath is made of ethylene-tetrafluoroethylene copolymer ETFE. The higher melt index can ensure the melt fluidity, minimize the sheath thickness (reduce the overall cable diameter), and reduce the cable weight. In addition, ethylene-tetrafluoroethylene copolymer ETFE has high and low temperature resistance, which can ensure the stability and safety of the signal and power transmission system of the UAV in harsh environments.

[0019] In summary, the utility model has an ingenious structural design. While adopting a stable structural design, it also uses lightweight, high-strength, and highly weather-resistant special materials. While improving the carrying capacity of the UAV, it also ensures the stability and safety of the UAV's signal and power transmission systems in harsh environments. It provides important support and guarantee for the continuous advancement of UAV technology and the continuous expansion of its application fields. The application of ultra-lightweight, high-strength cables, made of ultra-lightweight, high-strength materials and special processes, has an extremely low weight, which helps to reduce the overall weight of the UAV and improve flight efficiency. At the same time, the high strength and high and low temperature resistance ensure that the UAV can maintain a stable connection in various harsh and complex environments, thereby extending the service life of the UAV. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the ultra-lightweight and high-strength cable for drones of the present invention;

[0021] In the figure: 1. Signal line transmission unit, 2. Power transmission insulated core wire, 3. Filler strip, 4. Expanded polytetrafluoroethylene (EPTFE) tape, 5. Braided shielding layer, 6. Sheath. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0023] Ultra-lightweight and high-strength cable cross-section structure for drones Figure 1 As shown, it includes a signal line transmission unit 1, a power transmission insulating core wire 2, a filling strip 3, an expanded polytetrafluoroethylene (EPTFE) tape 4, a braided shielding layer 5 and a sheath 6; the filling strip 3 is located in the center of the cable, and multiple power transmission insulating core wires 2 are arranged in a star-twisted manner around the filling strip 3 as the center. Between each two adjacent power transmission core wires 2, a signal line transmission unit 1 and two filling strips 3 are provided on the side away from the center, that is, on the side close to the expanded polytetrafluoroethylene (EPTFE) tape 4. There is also a filling strip on both sides of the signal line transmission unit 1. Strip 3; the signal line transmission unit 1, the power transmission insulating core wire 2 and the filling strip 3 are assembled into a cable, wherein the signal line transmission unit 1 is specifically a four-core ultra-fine coaxial signal wire, the power transmission insulating core wire 2 is specifically a four-core power insulating core, and is coated with an expanded polytetrafluoroethylene EPTFE tape 4 on the outside of the cable, and the expanded polytetrafluoroethylene EPTFE tape 4 is coated with a braided shielding layer 5, the braided shielding layer 5 is woven by aluminum-magnesium alloy wire to shield, and finally the sheath 6 is made by extrusion of ethylene-tetrafluoroethylene copolymer ETFE, and the braided shielding layer 5 is coated with the sheath 6.

[0024] Ultra-lightweight and high-strength cable cross-section structure for drones Figure 1As shown, the signal line transmission unit 1 is mainly composed of a silver-plated copper alloy conductor, an insulating material, a tinned copper braided layer and an FEP sheath from the inside to the outside. The insulating material is covered on the outside of the silver-plated copper alloy conductor, the tinned copper braided layer is covered on the outside of the insulating material, and the FEP sheath is covered on the outside of the tinned copper braided layer.

[0025] The power transmission insulated core wire 2 is mainly composed of a silver-plated copper alloy conductor and an insulating material covering the silver-plated copper alloy conductor.

[0026] The insulating materials in the signal line transmission unit 1 and the power transmission insulating core wire 2 are both fluorinated ethylene propylene copolymer FEP.

[0027] Specifically, the filler strip 3 is made of Kevlar fiber, the expanded polytetrafluoroethylene (EPTFE) tape 4 is made of expanded polytetrafluoroethylene (EPTFE), the sheath 6 is made of ethylene-tetrafluoroethylene copolymer (ETFE), and the braided shield layer 5 is woven from high-strength, low-density aluminum-magnesium alloy wire. While effectively shielding against external interference signals, its high strength allows it to withstand external pressure and tension. The lightweight nature of the aluminum-magnesium alloy wire also reduces the cable's weight.

[0028] Certain modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. Furthermore, although certain specific terms are used in this specification, these terms are for convenience only and do not constitute any limitation on the present invention. As described in the above embodiments of the present invention, other wires and cables with the same or similar structures are also within the scope of protection of the present invention.

Claims

1. An ultra-lightweight, high-strength cable for drones, characterized by: The invention comprises a signal line transmission unit (1), a power transmission insulating core wire (2), a filling strip (3), an expanded polytetrafluoroethylene (EPTFE) tape (4), a braided shielding layer (5) and a sheath (6); the filling strip (3) is located at the center of the cable, and a plurality of power transmission insulating core wires (2) are arranged around the filling strip (3) as the center. A signal line transmission unit (1) and two filling strips (3) are provided between each two adjacent power transmission core wires (2) on the side away from the center, and a filling strip (3) is also provided on both sides of the signal line transmission unit (1); the signal line transmission unit (1), the power transmission insulating core wire (2) and the filling strip (3) are assembled into a cable, and the expanded polytetrafluoroethylene (EPTFE) tape (4) is coated on the outside of the cable, the expanded polytetrafluoroethylene (EPTFE) tape (4) is coated on the outside of the braided shielding layer (5), and the braided shielding layer (5) is coated on the outside of the sheath (6).

2. The ultra-lightweight, high-strength cable for drones according to claim 1, characterized in that: The signal line transmission unit (1) mainly consists of a silver-plated copper alloy conductor, an insulating material, a tinned copper braided layer and an FEP sheath from the inside to the outside, wherein the insulating material is coated on the outside of the silver-plated copper alloy conductor, the tinned copper braided layer is coated on the outside of the insulating material, and the FEP sheath is coated on the outside of the tinned copper braided layer.

3. The ultra-lightweight, high-strength cable for drones according to claim 1, characterized in that: The power transmission insulating core wire (2) is mainly composed of a silver-plated copper alloy conductor and an insulating material covering the silver-plated copper alloy conductor.

4. The ultra-lightweight, high-strength cable for drones according to claim 2 or 3, characterized in that: The insulating materials in the signal line transmission unit (1) and the power transmission insulating core wire (2) are both fluorinated ethylene propylene copolymer (FEP).

5. The ultra-lightweight and high-strength cable for drones according to claim 1, characterized in that: The filling strip (3) is made of Kevlar fiber.

6. The ultra-lightweight and high-strength cable for drones according to claim 1, characterized in that: The expanded polytetrafluoroethylene (EPTFE) tape (4) is made of expanded polytetrafluoroethylene (EPTFE).

7. The ultra-lightweight and high-strength cable for drones according to claim 1, characterized in that: The braided shielding layer (5) is braided with aluminum-magnesium alloy wires.

8. The ultra-lightweight and high-strength cable for drones according to claim 1, characterized in that: The sheath (6) is made of ethylene-tetrafluoroethylene copolymer ETFE.

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