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Heating soft wire

A technology of flexible wires and silk wires, applied in the field of heating flexible wires, can solve the problems of thicker outer diameters of heating flexible wires, low productivity, and poor mood of heating appliances, so as to achieve work efficiency and reliability, solve safety and Economical effect

Active Publication Date: 2008-09-24
HONGKONG TACHIBANA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the heating wire shown in Patent Document 1, there is an economic problem of low productivity because the following three steps are all repeated steps: the first step is to twist the first heating wire in a helical shape, and set the second heating wire on its outer periphery. a fuse layer; the second step is to spirally wind the second heating wire on the outer periphery of the first fuse layer, and set the second fuse layer on its outer periphery; and the third step is to spirally twist the outer periphery of the second fuse layer Wrap the signal line, and then set an insulating layer around it
However, this structure with three inner coverings makes the outer diameter of the heating cord thicker, causing other big problems that the mood of using the already laid heating appliance deteriorates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] versus Figure 1A and Figure 1B The data related to the illustrated embodiment is as follows.

[0044] Material of core wire (1a, 1b): polyester fiber bundle

[0045] Diameter of core wire 1a: D3 = 0.3mm

[0046] Diameter of core wire 1b: D4=0.3mm

[0047] Material of outer cover layer 6: heat-resistant vinyl chloride resin

[0048] Diameter of the outer covering layer 6: D1=3.0mm

[0049] Material of cover 4a: Nylon 12

[0050] Diameter of the covering part 4a: D2=0.9mm

[0051] Material of cover 4b: Heat-resistant vinyl chloride resin

[0052] Diameter of the covering part 4b: D5=1.2mm

[0053] Sectional shape (mm) Pitch (mm) Winding direction Material

[0054] Heating wire 2a 0.06×0.42 0.66 right copper

[0055] Heating wire 2b 0.06×0.42 0.69 right copper

[0056] Detection line 5 φ0.09 0.86 left pure nickel

[0057] In addition, the number of detection wires 5 is one, and the twisting pitch is selected so that the resistance value at 20° C. is 1030 Ω. Whe...

Embodiment 2

[0064] The covering portion 4a of the heating wire 2a of the first flexible cord element 10 of Example 1 was replaced with a heat-resistant vinyl chloride resin. In this heating cord, under exactly the same conditions as in the first embodiment, a short circuit between the heating wire 2a or 2b and the detection wire 5 caused by the abnormal heating of the first flexible cord element 10 and the second flexible cord element 20 is performed. test. As a result, the covering portion 4a of the first cord element 10 melted, and it was confirmed by electrical measurement that the heating cord 2a was in contact with the detection cord 5.

[0065] Variations

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Abstract

A fever soft wire is provided, which can reduce magnetic leakage field to a large extent; a fever wire and a detection wire can practically perform short circuit at the time of abnormal fever, and can realize enhancement of production efficiency and processability. The fever soft wire (30) of the invention comprises a first soft wire element (10) and a second soft wire element (20) that are adjacently configured in substance in a manner of having a parallel part. The fever wires (2a, 2b) of the first and the second soft wire elements (10, 20) are interconnected in series or in shunt for electrification, the magnetic fields generated by the fever wires are counteracted mutually.

Description

Technical field [0001] The present invention relates to a heating cord suitable for flat heating appliances such as electric blankets or electric heating carpets, and more specifically, to an economical heating cord that can reduce the leakage magnetic field and has excellent terminal connector workability. Background technique [0002] In order to reduce the impact of the AC magnetic field on the human body, it is necessary to reduce the generation of the leakage magnetic field used in electric blankets or electric carpets, and it has been developed. The invention of the heating wire described in Patent Document 1 cancels out the magnetic fields generated during energization. [0003] In the heating wire described in Patent Document 1 (corresponding to the heating cord of the present invention), in the first embodiment (refer to FIG. 1 of the document), the core wire is spirally wound on the outer periphery The heating wire is provided with a first fuse layer on its outer periph...

Claims

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Application Information

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IPC IPC(8): H05B3/56
Inventor 野村卓志朝仓正博
Owner HONGKONG TACHIBANA ELECTRONICS
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