Bending-resistant low-loss silver-plated copper wire

Abstract

The utility model discloses a bending-resistant low-loss silver-plated copper wire, which comprises three copper cores, the three copper cores are distributed along the periphery of a triangular positioning frame in a central symmetry manner, the three copper cores are tightly attached to the triangular positioning frame, and the outer surface of each copper core is sequentially electroplated with a silver-plated layer, a tin-plated layer and a nano-ceramic-plated layer. The periphery of the three copper cores is wrapped with a rubber insulating layer, gaps between the rubber insulating layer and the three copper cores are filled with an inorganic fiber filling layer, the periphery of the rubber insulating layer is spirally wound with a copper strip shielding layer, the periphery of the copper strip shielding layer is wrapped with an outer sheath layer, and a plurality of air cavities are uniformly distributed in a shell of the outer sheath layer. According to the utility model, by arranging the triangular positioning frame, the problem that the copper core is bent and twisted when the copper core is wrapped and packaged can be prevented, so that the performance of the copper core is well protected, and the air cavity arranged in the outer sheath layer can be used for pressure-resistant protection, so that the problem that the internal copper core is pressed and deformed is reduced, and the whole wire has higher pressure-resistant capability.

Description

Technical Field

[0001] The utility model relates to the technical field of copper wires, in particular to a bending-resistant and low-loss silver-plated copper wire. Background Art

[0002] Copper wire plays a vital role in national production. Due to its low cost and good conductivity, it is widely used in the manufacture of transmission cables for electricity and telecommunications, circuit boards, integrated circuit lead frames, various switches and rectifiers and other components.

[0003] When the existing copper wire is packaged in multiple cores, wrapping the copper wire outside can easily cause the wire core to bend and twist, affecting the performance of the copper wire itself. In addition, the external pressure resistance of the current copper wire is insufficient. When used, the external part is squeezed, which can easily cause the internal wire core to be squeezed and deformed, thereby increasing transmission loss.

[0004] Therefore, we propose a bending-resistant and low-loss silver-plated copper wire to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a bending-resistant and low-loss silver-plated copper wire to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A bending-resistant, low-loss silver-plated copper wire comprises three copper cores, which are symmetrically distributed along the periphery of a triangular positioning frame and are tightly fitted to the triangular positioning frame; the outer surfaces of the copper cores are electroplated with a silver-plated layer, a tin-plated layer and a nano-ceramic-plated layer in sequence; the peripheries of the three copper cores are wrapped with a rubber insulating layer, and the gaps between the rubber insulating layer and the three copper cores are filled with an inorganic fiber filling layer; the periphery of the rubber insulating layer is spirally wound with a copper tape shielding layer, and the periphery of the copper tape shielding layer is wrapped with an outer sheath layer, and a plurality of air cavities are evenly distributed inside the shell of the outer sheath layer.

[0008] In a further embodiment, the fitting surface between the triangular positioning frame and the copper core adopts a curved surface structure.

[0009] In a further embodiment, the nano-ceramic coating is a tungsten carbide metal ceramic coating.

[0010] In a further embodiment, the air cavities are symmetrically distributed along the circumference of the outer jacket layer, and spacing areas are left between adjacent air cavities on the same plane.

[0011] In a further embodiment, the air cavities are equidistantly distributed along the length direction of the outer jacket layer, and a spacing area is left between adjacent air cavities on the same vertical plane.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model effectively positions the copper core by arranging a triangular positioning frame, which can not only keep the copper cores closely fitted, but also prevent the copper core from bending and twisting when it is wrapped externally, thereby protecting the performance of the copper core itself.

[0014] The utility model provides a silver-plated layer to effectively reduce the problem of copper core oxidation, provides a tin-plated layer to effectively enhance the corrosion resistance of the copper core, thereby maintaining the performance of the copper core, and provides a nano-ceramic layer to effectively enhance the wear resistance of the outside of the copper core, thereby reducing the wear of the silver-plated layer and the tin-plated layer on the outside during wrapping.

[0015] The utility model provides a copper tape shielding layer which can not only isolate the electromagnetic field of the copper core, reduce interference, and thus reduce transmission loss, but also improve the pressure resistance of the entire wire exterior. The air cavity in the outer sheath layer provided can further provide pressure resistance protection, reduce the problem of compression deformation of the internal copper core, and thus make the entire wire more resistant to pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the partial structure of the copper core of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the outer sheath layer of the utility model after being cut open.

[0020] In the figure: 1. copper core; 11. silver-plated layer; 12. tin-plated layer; 13. nano-ceramic layer; 2. triangular positioning frame; 3. inorganic fiber filling layer; 4. rubber insulation layer; 5. copper tape shielding layer; 6. outer sheath layer; 61. air cavity. DETAILED DESCRIPTION

[0021] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances. The following will combine the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Please refer to Figure 1-4A bending-resistant and low-loss silver-plated copper wire comprises three copper cores 1. The outer surface of the copper core 1 is electroplated with a silver-plated layer 11. Due to the good chemical stability of silver, the surface oxidation of the copper core 1 can be effectively prevented, thereby improving the conductivity. In order to protect the silver-plated layer 11 from being easily damaged, a tin-plated layer 12 is electroplated outside the silver-plated layer 11. The tin-plated layer 12 can improve the corrosion resistance. In order to protect the tin-plated layer 12, a nano-ceramic layer 13 is electroplated outside the tin-plated layer 12. The nano-ceramic layer 13 is a tungsten carbide metal ceramic coating, which effectively enhances the wear resistance of the surface, making it more wear-resistant during use, and it is not easy to expose the tin-plated layer 12 and the silver-plated layer 11. The three copper cores 1 are provided with a silver-plated layer 11, and the silver-plated layer 11 is provided with a tin-plated layer 12. The cores 1 are gathered together and parallel to each other. Since the copper core 1 is cylindrical, gaps are formed between the three copper cores 1, and the contact areas between the copper cores 1 are small, which can easily cause them to bend and twist during external wrapping. Therefore, a triangular positioning frame 2 is set in the middle of the entire wire, and the three copper cores 1 are respectively attached to the outer periphery of the triangular positioning frame 2 and are symmetrically distributed at the center. The triangular positioning frame 2 not only enhances the support of the center of the three copper cores 1, but also limits the copper core 1 to prevent the copper core 1 from bending and twisting during external wrapping, thereby protecting the performance of the copper core 1 itself. Furthermore, considering that the copper core 1 is cylindrical, in order to improve the triangular positioning frame 2 The fitting degree between the positioning frame 2 and the copper core 1 is improved, and the fitting surface between the triangular positioning frame 2 and the copper core 1 is provided with an arc surface structure, so as to increase the contact surface between the copper core 1 and the triangular positioning frame 2, and reduce the gap at the same time; the periphery of the three copper cores 1 is wrapped with a rubber insulating layer 4, and the gap between the rubber insulating layer 4 and the three copper cores 1 is filled with an inorganic fiber filling layer 3, and the inorganic fiber filling layer 3 fills the gap and can be kept as relatively round as possible to facilitate the wrapping and extrusion of the sheath, and can also further limit the position of the copper core 1, and the periphery of the rubber insulating layer 4 is spirally wound with a copper tape shielding layer 5, and the copper tape shielding layer 5 is used to isolate the electromagnetic field and reduce the magnetic field interference, thereby enhancing the conductivity, and the copper tape shielding Layer 5 can also enhance the external strength of the wire, making it more resistant to bending; the outer periphery of the copper tape shielding layer 5 is wrapped with an outer sheath layer 6, and a number of air cavities 61 are evenly distributed inside the shell of the outer sheath layer 6, and the air cavities 61 are symmetrically distributed along the circumference of the outer sheath layer 6, and there is a spacing area between adjacent air cavities 61 on the same plane, and the air cavities 61 are equidistantly distributed along the length direction of the outer sheath layer 6, and there is a spacing area between adjacent air cavities 61 on the same vertical plane. The use of air cavities 61 can improve the pressure resistance, so that when it is squeezed, the air cavities 61 are compressed, thereby reducing the pressure transmission into the wire, improving the pressure protection of the copper core 1, and reducing the compression deformation of the copper core 1. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the utility model.Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it should be understood that although this specification is described in accordance with the implementation mode, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A bending-resistant and low-loss silver-plated copper wire, comprising three copper cores (1), characterized in that: The three copper cores (1) are symmetrically distributed along the periphery of the triangular positioning frame (2), and the three copper cores (1) are tightly fitted to the triangular positioning frame (2); the outer surfaces of the copper cores (1) are electroplated with a silver-plated layer (11), a tin-plated layer (12), and a nano-ceramic-plated layer (13) in sequence; the peripheries of the three copper cores (1) are wrapped with a rubber insulating layer (4), and the gaps between the rubber insulating layer (4) and the three copper cores (1) are filled with an inorganic fiber filling layer (3); the periphery of the rubber insulating layer (4) is spirally wound with a copper tape shielding layer (5), and the periphery of the copper tape shielding layer (5) is wrapped with an outer sheath layer (6), and a plurality of air cavities (61) are evenly distributed inside the shell of the outer sheath layer (6).

2. The bending-resistant and low-loss silver-plated copper wire according to claim 1, characterized in that: The fitting surfaces of the triangular positioning frame (2) and the copper core (1) adopt an arc surface structure.

3. The bending-resistant and low-loss silver-plated copper wire according to claim 1, characterized in that: The nano-ceramic coating (13) is made of tungsten carbide metal ceramic coating.

4. The bending-resistant and low-loss silver-plated copper wire according to claim 1, characterized in that: The air cavities (61) are symmetrically distributed along the circumference of the outer jacket layer (6), and a spacing area is left between adjacent air cavities (61) on the same plane.

5. The bending-resistant and low-loss silver-plated copper wire according to claim 1, characterized in that: The air cavities (61) are distributed at equal intervals along the length direction of the outer jacket layer (6), and a spacing area is left between adjacent air cavities (61) on the same vertical plane.

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