PI film coated heating wire
By using PI film to cover the heating wire, the existing heating wire insulating jackets have been solved, and the thinner and softer insulating jackets are achieved and the effect of reducing production costs is achieved.
Patent Information
- Application Number
- CN202421740921.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The insulated jackets of existing heating wires have large thickness, poor flexibility, low production efficiency and high cost.
The heating wire is covered with PI film, and the PI insulation film is spirally wound on the outside of the heating wire body, forming a thinner and softer insulating jacket.
The thickness and production cost of the heat wire insulated jacket are reduced, while the softness and production efficiency of the heat wire are improved.
Smart Images
Figure CN222814615U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heating wires, in particular to a PI film-wrapped heating wire. Background Art
[0002] As people's quality of life improves, they often use some external products to keep their bodies comfortable. For example, in the cold winter, especially in northern my country, people often use electric blankets, electric cushions and other heating products to keep warm. Among the existing heating elements, heating wires are widely used in heating products because of their light size.
[0003] The insulating jacket of the existing heating wire is usually formed by extrusion of PVC or Teflon, which is thick and has poor flexibility. In addition, it can only be rolled up after cooling after extrusion, resulting in low production efficiency and high production cost. Utility Model Content
[0004] The utility model aims at the defects of the prior art and provides a PI film-wrapped heating wire, which can reduce the thickness of the insulating layer of the heating wire, improve the flexibility of the heating wire and reduce the production cost.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A PI film-wrapped heating wire comprises a heating wire body and a PI insulating film, wherein the PI insulating film is spirally wound on the outer side of the heating wire body to form a first film coating, wherein the heating wire body comprises an insulating core wire and an alloy heating wire, wherein the alloy heating wire is spirally wound on the outer side of the insulating core wire to form a heating layer, and the first film coating is coated on the outer side of the heating layer. By using PI insulating film coating to replace PVC or Teflon extrusion to form an insulating jacket, the insulating jacket of the heating wire is made thinner and more flexible, and the production efficiency of the heating wire is also improved, and the production cost of the heating wire is reduced.
[0007] As a preferred solution, the insulating core wire is a polyester twisted wire or a bulletproof wire.
[0008] As a preferred solution, the diameter of the insulating core wire is 0.20-1.0 mm.
[0009] As a preferred solution, the thickness of the PI insulating film is 0.0125-0.050 mm.
[0010] As a preferred solution, the width of the PI insulating film is 1.0-12 mm.
[0011] As a preferred solution, the thickness of the first membrane cladding is 0.0125-0.20 mm.
[0012] As a preferred solution, the alloy heating wire is a copper alloy or a nickel alloy.
[0013] As a preferred solution, the thickness of the heating layer is 0.04-0.30 mm.
[0014] As a preferred solution, it also includes a temperature-sensitive wire, which is spirally wound on the outer surface of the first film coating to form a temperature-sensitive layer, and the outer side of the temperature-sensitive layer is coated with a second film coating formed by winding a PI insulating film.
[0015] As a preferred solution, the thickness of the second membrane cladding is 0.0125-0.20 mm.
[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, by using PI insulating film coating instead of PVC or Teflon extrusion to form the insulating jacket, the insulating jacket of the heating wire is thinner and more flexible, and the production cost of the heating wire is reduced.
[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 the first embodiment of the utility model;
[0019] Figure 2 It is a schematic cross-sectional structure diagram of the second embodiment of the present utility model.
[0020] Description of the accompanying drawings:
[0021] 10. Insulated core wire 20. Heating layer 21. Alloy heating wire
[0022] 30, first film layer 40, temperature sensing layer 41, temperature sensing line
[0023] 50. Second membrane envelope. DETAILED DESCRIPTION
[0024] 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.
[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0026] like Figure 1 As shown, a PI film-wrapped heating wire according to the first embodiment of the utility model comprises a heating wire body and a PI insulating film, wherein the PI insulating film is spirally wound on the outside of the heating wire body to form a first film coating 30, wherein the heating wire body comprises an insulating core wire 10 and an alloy heating wire 21, wherein the alloy heating wire 21 is spirally wound on the outside of the insulating core wire 10 to form a heating layer 20, and the first film coating 30 is coated on the outside of the heating layer 20. By using PI insulating film coating instead of PVC or Teflon extrusion to form an insulating jacket, the insulating jacket of the heating wire is thinner and more flexible, thereby reducing the production cost of the heating wire.
[0027] Specifically, the insulating core wire 10 is a polyester twisted wire or a bulletproof wire. The diameter of the insulating core wire 10 is 0.20-1.0 mm. The thickness of the PI insulating film is 0.0125-0.05 mm, the width of the PI insulating film is 1.0-12 mm, and the thickness of the first film coating 30 is 0.0125-0.20 mm.
[0028] In this embodiment, the alloy heating wire 21 is a copper alloy or a nickel alloy, and the thickness of the heating layer 20 is 0.04-0.30 mm. The alloy heating wire 21 can be a single winding or a plurality of windings.
[0029] like Figure 2 As shown, the second embodiment of the utility model is different from the first embodiment in that it also includes a temperature-sensitive wire 41, which is spirally wound on the outer surface of the first membrane package 30 to form a temperature-sensitive layer 40, and the outer side of the temperature-sensitive layer 40 is coated with a second membrane package 50 formed by winding a PI insulating film, and the thickness of the second membrane package 50 is 0.0125~0.20mm.
[0030] In summary, the utility model adopts PI insulating film coating instead of PVC or Teflon extrusion to form the insulating jacket, so that the insulating jacket of the heating wire is thinner and more flexible, and the production cost of the heating wire is reduced.
[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.
Claims
1. A PI film-wrapped heating wire, characterized in that: It includes a heating wire body and a PI insulating film, wherein the PI insulating film is spirally wound on the outside of the heating wire body to form a first film coating, and the heating wire body includes an insulating core wire and an alloy heating wire, wherein the alloy heating wire is spirally wound on the outside of the insulating core wire to form a heating layer, and the first film coating is coated on the outside of the heating layer.
2. The PI film-wrapped heating wire according to claim 1, characterized in that: The insulating core wire is a polyester twisted wire or a bulletproof wire.
3. The PI film-wrapped heating wire according to claim 2, characterized in that: The diameter of the insulating core wire is 0.20-1.0 mm.
4. The PI film-wrapped heating wire according to claim 1, characterized in that: The thickness of the PI insulating film is 0.0125-0.05 mm.
5. The PI film-wrapped heating wire according to claim 4, characterized in that: The width of the PI insulating film is 1.0 to 12 mm.
6. The PI film-wrapped heating wire according to claim 5, characterized in that: The thickness of the first membrane cladding is 0.0125-0.20 mm.
7. The PI film-wrapped heating wire according to claim 1, characterized in that: The alloy heating wire is a copper alloy or a nickel alloy.
8. The PI film-wrapped heating wire according to claim 7, characterized in that: The thickness of the heating layer is 0.04-0.30 mm.
9. The PI film-wrapped heating wire according to claim 1, characterized in that: It also includes a temperature-sensitive wire, which is spirally wound on the outer surface of the first film coating to form a temperature-sensitive layer, and the outer side of the temperature-sensitive layer is coated with a second film coating formed by winding a PI insulating film.
10. The PI film-wrapped heating wire according to claim 9, characterized in that: The thickness of the second membrane cladding is 0.0125-0.20 mm.