Water-resistant and high-frequency-resistant thin film sintered copper flat wire

Abstract

The utility model relates to the field of copper flat wires, and discloses a water-resistant and high-frequency-resistant film sintered copper flat wire, which comprises a conductor, a polyimide film arranged outside the conductor, glass fibers arranged outside the polyimide film, an insulating layer arranged outside the glass fibers, and a protection assembly arranged outside the insulating layer. A waterproof assembly is installed in the polyimide film and comprises a protective layer, the inner side of the protective layer is fixedly connected to the exterior of the insulating layer, the waterproof assembly comprises a plurality of rubber rings, the exterior of each rubber ring is fixedly connected to the interior of the polyimide film, the interior of the protective layer is in a hollow hexagonal honeycomb shape, and the outer side of each rubber ring is fixedly connected to the interior of the polyimide film. And the outer part of the conductor is sleeved in the protective layer. According to the utility model, the conductor and other sleeve layers are protected through the hollow hexagon inside the conductor, the compressive resistance and tensile resistance of the whole conductor are enhanced through active deformation, and electric leakage caused by internal breakage during bending and twisting is avoided.

Description

Technical Field

[0001] This utility model relates to the field of copper flat wire, and more particularly to water-resistant and high-frequency resistant thin-film sintered copper flat wire. Background Technology

[0002] Thin-film sintered copper flat wire is a winding wire in which a thin film such as polyimide is wrapped around a copper flat conductor and then sintered to bond the film and conductor together. During the manufacturing process, the copper flat wire is first straightened, polished, cleaned and dried with hot air. Then, a specific thin film is wrapped around it with a certain overlap ratio and sintered at high frequency at 350-450℃. After that, there are also baking, cooling and other processes.

[0003] This type of conductor has distinctive features. It is resistant to high and low temperatures, can work stably in extreme temperature environments, is radiation-resistant and flame-resistant, can cope with special working conditions, is resistant to organic solvents, and has strong chemical stability. For example, the corona-resistant polyimide film sintered copper flat wire can still be used normally when the voltage reaches 100,000 volts at 2000Hz, and its corona discharge resistance is 20 times that of similar products.

[0004] Thin-film sintered copper flat wire is suitable for windings of traction motors, submersible and oil-filled motors, salt field motors, high-voltage motors and electrical appliances, etc. It is also widely used in new energy vehicles, nuclear power, military industry, as well as high-voltage industrial motors, special explosion-proof motors, wind turbines, and rail traction motors. It can meet the high-performance requirements of conductors in different scenarios. However, copper flat wires are often bent and twisted during installation and laying. The outer wrapping layer of traditional copper flat wires does not have toughness and is prone to cracking and leakage, which affects normal use. Therefore, water-resistant and high-frequency resistant thin-film sintered copper flat wire is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a water-resistant and high-frequency resistant thin-film sintered copper flat wire, which aims to improve the problem that copper flat wires are frequently bent and twisted during installation and laying, and that the outer wrapping layer of traditional copper flat wires lacks toughness, making them prone to cracking and leakage, thus affecting normal use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a water-resistant and high-frequency resistant thin-film sintered copper flat wire, comprising a conductor, a polyimide film disposed on the outside of the conductor, a glass fiber disposed on the outside of the polyimide film, an insulating layer disposed on the outside of the glass fiber, a protective component installed on the outside of the insulating layer, and a waterproof component installed inside the polyimide film.

[0007] The protective component includes a protective layer, the inner side of which is fixedly connected to the outside of the insulating layer.

[0008] As a further description of the above technical solution:

[0009] The waterproof component includes multiple rubber rings, which are externally fixedly connected to the inside of the polyimide film.

[0010] As a further description of the above technical solution:

[0011] The protective layer has a hollow hexagonal honeycomb structure inside.

[0012] As a further description of the above technical solution:

[0013] The conductor is wrapped around the inside of the protective layer.

[0014] As a further description of the above technical solution:

[0015] The rubber rings are distributed in a straight line at equal intervals.

[0016] As a further description of the above technical solution:

[0017] The inner side of the rubber ring and the outer side of the conductor abut against each other.

[0018] As a further description of the above technical solution:

[0019] The rubber ring is fitted over the glass fiber.

[0020] As a further description of the above technical solution:

[0021] The rubber ring is fitted over the insulation layer.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the hollow hexagon inside the conductor is used to protect the conductor and other sheaths. The active deformation enhances the overall resistance of the conductor to pressure and tension, and prevents internal breakage and leakage when bending or twisting.

[0024] 2. In this utility model, the outer section of the conductor is sealed by the cooperation of multiple rubber rings. Even if the outer sheath of the conductor is damaged and water enters, the water will only stay in the damaged section and will not spread to the outside of the entire conductor, thus achieving the waterproof function. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the water-resistant and high-frequency resistant thin-film sintered copper flat wire proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the protective layer for the water-resistant and high-frequency resistant thin-film sintered copper flat wire proposed in this utility model;

[0027] Figure 3 for Figure 2Enlarged view of point A in the middle.

[0028] Legend:

[0029] 1. Conductor; 2. Polyimide film; 3. Glass fiber; 4. Insulating layer; 5. Protective layer; 6. Rubber ring. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-3 The present invention provides an embodiment of a water-resistant and high-frequency resistant thin-film sintered copper flat wire, comprising a conductor 1, a polyimide film 2 disposed on the outside of the conductor 1, a glass fiber 3 disposed on the outside of the polyimide film 2, and an insulating layer 4 disposed on the outside of the glass fiber 3. The conductor 1 is used to transmit electricity, the polyimide film 2 is used to protect the conductor 1, the glass fiber 3 is used to increase the mechanical strength of the conductor 1, the insulating layer 4 is used to insulate the conductor 1 to prevent leakage, a protective component is installed on the outside of the insulating layer 4, and a waterproof component is installed inside the polyimide film 2.

[0032] The protective component includes a protective layer 5, which is fixedly connected to the outside of the insulation layer 4. The protective layer 5 is used to increase the toughness and bending resistance of the conductor 1. The inside of the protective layer 5 is a hollow hexagonal honeycomb, which allows the protective layer 5 to actively deform when subjected to force, thus preventing the insulation layer 4 from cracking. The conductor 1 is sleeved inside the protective layer 5, so that the conductor 1 is effectively protected.

[0033] Reference Figures 1-3 The waterproof component includes multiple rubber rings 6, which are externally fixed inside the polyimide film 2. The rubber rings 6 are used to seal the conductor 1 in sections to prevent water from spreading. The rubber rings 6 are distributed in a straight line at equal intervals to effectively protect the conductor 1. The inner side of the rubber ring 6 and the outer side of the conductor 1 abut against each other to achieve a waterproof seal. The rubber ring 6 is externally sleeved inside the glass fiber 3 and the outer side of the rubber ring 6 is externally sleeved inside the insulation layer 4 to keep the rubber ring 6 stable.

[0034] Working principle: When conductor 1 is used, during the laying process, when conductor 1 is bent, twisted or squeezed, the protective layer 5 will actively deform, causing the honeycomb-like stretching deformation inside the protective layer 5 to prevent the insulation layer 4 from being damaged and cracked, resulting in leakage. This effectively enhances the strength of conductor 1. During use, when water enters the gaps of conductor 1 due to various factors, the cooperation of multiple rubber rings 6 effectively blocks the water, keeping it in place and preventing it from spreading. This effectively protects conductor 1 and prevents it from being corroded over a large area.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 water-resistant, high-frequency resistant, thin-film sintered copper flat wire comprising a conductor (1), characterized in that: The conductor (1) is provided with a polyimide film (2) on the outside, a glass fiber (3) is provided on the outside of the polyimide film (2), an insulating layer (4) is provided on the outside of the glass fiber (3), a protective component is installed on the outside of the insulating layer (4), and a waterproof component is installed inside the polyimide film (2). The protective component includes a protective layer (5), the inner side of which is fixedly connected to the outside of the insulating layer (4).

2. The water-resistant, high-frequency resistant thin film sintered copper flat wire according to claim 1, characterized by: The waterproof component includes multiple rubber rings (6), which are externally fixed to the inside of the polyimide film (2).

3. The water-resistant, high-frequency resistant thin film sintered copper flat wire according to claim 1, characterized by: The protective layer (5) has a hollow hexagonal honeycomb structure inside.

4. The water-resistant, high-frequency resistant thin film sintered copper flat wire according to claim 1, characterized by: The conductor (1) is wrapped around the inside of the protective layer (5).

5. The water-resistant, high-frequency resistant thin film sintered copper flat wire according to claim 2, characterized by: The rubber rings (6) are distributed in a straight line at equal intervals.

6. The water-resistant and high-frequency resistant thin-film sintered copper flat wire according to claim 2, characterized in that: The inner side of the rubber ring (6) and the outer side of the conductor (1) abut against each other.

7. The water-resistant, high-frequency resistant thin film sintered copper flat wire according to claim 2, characterized by: The rubber ring (6) is sleeved inside the glass fiber (3).

8. The water-resistant, high-frequency resistant thin film sintered copper flat wire according to claim 2, characterized by: The rubber ring (6) is fitted inside the insulating layer (4) on the outside.

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