Flat wire alloy heating wire

Abstract

The utility model discloses a flat wire alloy heating wire, which sequentially comprises an insulating core wire, an inner insulating layer and an outer insulating layer from inside to outside, an inner-layer flat wire alloy wire is arranged between the insulating core wire and the inner insulating layer, and the inner-layer flat wire alloy wire is spirally wound on the outer surface of the insulating core wire. An outer-layer flat wire alloy wire is arranged between the inner insulating layer and the outer insulating layer, a corona treatment layer is formed on the outer surface of the inner insulating layer, and the outer-layer flat wire alloy wire is spirally wound on the outer surface of the corona treatment layer. According to the utility model, the corona treatment layer is arranged on the surface of the inner insulating layer, so that the roughness of the surface of the inner insulating layer is increased, the inner-layer flat wire alloy wire wound on the surface of the inner insulating layer is prevented from slipping, the stability of the heating wire structure is improved, and the service life of the heating wire is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of heating wires, in particular to a flat wire alloy heating wire. Background Art

[0002] Today, with the increasingly high quality of people's lives, people often rely on some external products to maintain physical comfort. For example, in cold winters, especially in northern regions of our country, people often use heating products such as electric blankets and electric seat cushions to keep warm. Among existing heating elements, heating wires are widely used in heating products due to their light weight.

[0003] Existing heating wires usually directly wind metal wires on the surface of the extruded insulating layer. Since the surface of the insulating layer is smooth after extrusion, the metal wires are likely to slip on the surface of the insulating layer, resulting in poor overall structural stability of the heating wire and easy damage. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides a flat wire alloy heating wire, which can avoid the phenomenon of metal wires slipping on the surface of the insulating layer and improve the overall structural stability of the heating wire.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A flat wire alloy heating wire sequentially includes an insulating core wire, an inner insulating layer and an outer insulating layer from inside to outside. An inner layer flat wire alloy wire is arranged between the insulating core wire and the inner insulating layer, and the inner layer flat wire alloy wire is spirally wound around the outer surface of the insulating core wire. An outer layer flat wire alloy wire is arranged between the inner insulating layer and the outer insulating layer. A corona treatment layer is formed on the outer surface of the inner insulating layer, and the outer layer flat wire alloy wire is spirally wound around the outer surface of the corona treatment layer. By setting a corona treatment layer on the surface of the inner insulating layer, the roughness of the surface of the inner insulating layer is increased, the slipping of the inner layer flat wire alloy wire wound on the surface of the inner insulating layer is avoided, thereby improving the structural stability of the heating wire and prolonging the service life of the heating wire.

[0007] As a preferred technical solution, the inner insulating layer is formed by PA extrusion.

[0008] As a preferred technical solution, the thickness of the inner insulating layer is 0.2 - 0.5 mm.

[0009] As a preferred technical solution, the thickness of the corona treatment layer is 0.02 - 0.06 mm.

[0010] As a preferred technical solution, both the inner layer flat wire alloy wire and the outer layer flat wire alloy wire are single metal wires.

[0011] As a preferred technical solution, the metal wire is a copper-zinc alloy wire or a nickel alloy wire.

[0012] As a preferred technical solution, the insulating core wire is a twisted polyester yarn.

[0013] As a preferred technical solution, the diameter of the insulating core wire is 0.8-1.6 mm.

[0014] As a preferred technical solution, the outer insulating layer is formed of heat-resistant PVC.

[0015] As a preferred technical solution, the thickness of the outer insulating layer is 0.3-1.0 mm.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, by arranging a corona treatment layer on the surface of the inner insulating layer, the roughness of the surface of the inner insulating layer is increased, and the inner flat alloy wire wound on the surface of the inner insulating layer is prevented from slipping, thereby improving the stability of the heating wire structure and increasing the service life of the heating wire.

[0017] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the utility model.

[0019] Description of the accompanying drawings:

[0020] 1. Insulated core wire 2. Inner flat alloy wire 3. Inner insulation layer

[0021] 31. Corona treatment layer 4. Outer flat alloy wire 5. Outer insulation layer. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] As Figure 1 shown, a flat wire alloy heating wire includes, from the inside outwards, an insulating core wire 1, an inner insulating layer 3, and an outer insulating layer 5. An inner layer flat wire alloy wire 2 is provided between the insulating core wire 1 and the inner insulating layer 3. The inner layer flat wire alloy wire 2 is spirally wound around the outer surface of the insulating core wire 1. An outer layer flat wire alloy wire 4 is provided between the inner insulating layer 3 and the outer insulating layer 5. A corona treatment layer 31 is formed on the outer surface of the inner insulating layer 3. The outer layer flat wire alloy wire 4 is spirally wound around the outer surface of the corona treatment layer 31.

[0025] In the present utility model, the inner insulating layer 3 is formed by PA extrusion. The thickness of the inner insulating layer 3 is 0.2 - 0.5 mm, and the thickness of the corona treatment layer 31 is 0.02 - 0.06 mm.

[0026] In the present utility model, both the inner layer flat wire alloy wire 2 and the outer layer flat wire alloy wire 4 are single metal wires. The metal wire is a copper - zinc alloy wire or a nickel alloy wire. The insulating core wire 1 is a polyester twist yarn, and the diameter of the insulating core wire 1 is 0.8 - 1.6 mm. The outer insulating layer 5 is formed by heat - resistant PVC, and the thickness of the outer insulating layer 5 is 0.3 - 1.0 mm.

[0027] In summary, by providing the corona treatment layer 31 on the surface of the inner insulating layer 3, the present utility model increases the surface roughness of the inner insulating layer 3, avoids the slippage of the inner layer flat wire alloy wire 2 wound around the surface of the inner insulating layer 3, thereby improving the structural stability of the heating wire and extending the service life of the heating wire.

[0028] The above - mentioned are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made to the above embodiments according to the technical reality of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A flat wire alloy heating wire, characterized in that, From the inside out, it successively includes an insulating core wire, an inner insulating layer, and an outer insulating layer. An inner-layer flat wire alloy is provided between the insulating core wire and the inner insulating layer, and the inner-layer flat wire alloy is spirally wound around the outer surface of the insulating core wire. An outer-layer flat wire alloy is provided between the inner insulating layer and the outer insulating layer. A corona treatment layer is formed on the outer surface of the inner insulating layer, and the outer-layer flat wire alloy is spirally wound around the outer surface of the corona treatment layer.

2. The flat wire alloy heating wire according to claim 1, wherein The inner insulating layer is formed by PA extrusion.

3. The flat wire alloy heating wire according to claim 2, characterized in that, The thickness of the inner insulating layer is 0.2 to 0.5 mm.

4. The flat wire alloy heating wire according to claim 3, characterized in that, The thickness of the corona treatment layer is 0.02 to 0.06 mm.

5. The flat wire alloy heating wire according to claim 1, characterized in that Both the inner-layer flat wire alloy and the outer-layer flat wire alloy are single metal wires.

6. The flat wire alloy heating wire according to claim 5, characterized in that, The metal wire is a copper-zinc alloy wire or a nickel alloy wire.

7. The flat wire alloy heating wire according to claim 1, characterized in that The insulating core wire is a polyester twisted yarn.

8. The flat wire alloy heating wire according to claim 7, characterized in that, The diameter of the insulating core wire is 0.8 to 1.6 mm.

9. A flat wire alloy heating wire according to claim 1, characterized in that The outer insulating layer is formed by heat-resistant PVC.

10. A flat wire alloy heating wire according to claim 9, characterized in that, The thickness of the outer insulating layer is 0.3 to 1.0 mm.

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