JP2002367755A - Heating element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating element with which a terminal can be easily taken out and connection strength of the terminal can be heightened. SOLUTION: A terminal take-out part 4 is fitted at a part of an electrode 2 of a heating element, and is set woven in a base material 1, to be firmly fixed to it, so that it is easy to fit a terminal and a terminal 6 attached to the terminal take-out part 4 can be firmly fixed, realizing the heating element in which the terminal 6 has little fear of falling off from the electrode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of forming a heater by forming an electrode and an antibody on the surface of a base material, the terminal can be easily attached when the terminal is taken out through the electrode from the resistor of the heater. Also, the present invention relates to a heating element capable of firmly fixing a terminal to a base material.

[0002]

2. Description of the Related Art Conventionally, a terminal lead-out portion is not provided with a material different from an electrode. If the same material as the material forming the electrode is used, or if a large amount of current flows, a metal lead-out portion is required. Foil was applied to the electrodes to some extent.

[0003]

However, in the conventional method, when the terminal is taken out from the heating element, the terminal cannot be taken out by soldering or welding, or even if the terminal is attached, the mounting strength of the terminal is low. Or a satisfactory strength could not be obtained.

The present invention has been made to solve the above-mentioned conventional problems, and can easily take out a terminal.
An object of the present invention is to provide a heating element capable of increasing the connection strength of a terminal.

[0005]

In order to achieve the above object, a heating element according to the present invention is provided by providing a terminal extraction portion on a part of an electrode, and further, by arranging the terminal on a substrate so as to be knitted. Therefore, the terminal can be easily attached, and the terminal to be joined to the terminal take-out portion can be firmly fixed, so that a heating element in which the terminal is less likely to be detached from the electrode can be realized.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION
A terminal extraction portion for extracting a terminal separately from the electrode is provided on a part of the electrode provided on the surface of the base material. The terminal take-out portion is directly fixed to the base material, and is firmly fixed to the base material even when the terminal is attached. Therefore, it is possible to provide a heating element having a very large tensile strength of the terminal.

According to a second aspect of the present invention, the terminal extraction portion for extracting the terminal has a volume specific resistance of 10-.
By setting the resistance to 2 Ω · cm or less, it is possible to provide a heating element capable of reducing heat generation at a terminal extraction portion.

According to a third aspect of the present invention, the terminal take-out portion is formed of a fibrous conductor.
The terminal can be firmly joined by the joining member at the time of joining the terminals entering between the fibrous conductors.

According to a fourth aspect of the present invention, since the fibrous conductor according to the third aspect is woven into the base material, the fibrous conductor is firmly fixed to the base material and joins the terminals. In this case, the bonding with the terminal can be strengthened.

According to a fifth aspect of the present invention, since the fibrous conductor according to the third aspect is made of a metal fiber, a joining material such as solder is easily attached when joining the terminals. Is what you can do.

In the invention according to claim 6 of the present invention, since the base material forming the heater is a cloth made of fiber, the terminal take-out portion can be easily and firmly fixed. In addition, flexibility and durability of the substrate can be improved.

According to the invention of claim 7 of the present invention, the electrode and the resistor formed on the surface of the base material are formed thin by coating, so that a flexible heating element can be formed, and the electrode is connected to the terminal. Impregnate the part,
The bonding with higher adhesion can be realized.

According to the invention of claim 8 of the present invention, since all of the electrodes and the terminal take-out portions are formed of a fibrous conductor, the connection with the resistor and the terminal with flexibility is achieved. A more precise heating element can be realized.

[0014]

Embodiments of the present invention will be described below.

Embodiment 1 FIG. 1 is a configuration diagram of a heating element provided with a terminal extraction portion for extracting a terminal from a part of an electrode formed on the surface of a base material. Electrode 2 on the surface of substrate 1
A resistor 3 that generates heat when electricity is passed between it and the electrode 2
And a terminal take-out part 4 is provided in a part of the electrode 2. The base material 1 is in the form of a sheet, and may be a polymer film (eg, a polyethylene sheet, a polyethylene terephthalate sheet, etc.), a rubber sheet (eg, an EPDM rubber sheet, a chlorinated polyethylene sheet, etc.), a cloth (a woven fabric, a nonwoven fabric, etc.), or the like. is there. The electrode 2 is made of a material coated with an ink containing carbon, silver, copper, nickel, or the like, or a metal foil (for example, copper, silver, copper plated with nickel, or the like). The resistor 3 is obtained by kneading a polymer material with a conductive material (for example, carbon black, graphite, graphite, or the like). Further, the terminal take-out portion 4 directly fixed to the base material is configured by fixing conductive fibers such as carbon fibers and metal fibers, metal foils, carbon sheets and the like to the base material 1.

(Embodiment 2) FIG. 2 is an enlarged view of a terminal joining structure in which a portion for joining the above terminals is enlarged.
FIG. 3 is a sectional view of FIG. The electrode 2 is formed on the surface of the substrate 1, and the terminal take-out portion 4 is woven into the substrate 1 and is firmly bonded to the substrate. The terminal take-out portion 4 is made of a fibrous conductor having a volume specific resistance of 10 −2 Ω · cm or less. The electrode 2 and the bonding material 5 are placed on the terminal extraction portion 4.
The terminal 6 is joined to the heating element through a conductive wire 7 covered with an insulating sheath 8.

The electrode 2 formed on the surface of the substrate 1 and the resistor 3 shown in FIG. 1 are coated (for example, screen printing, die coating, transfer printing, spray coating, powder coating, gravure printing, etc.). ).

(Embodiment 3) FIG. 4 is a diagram showing the configuration of a heating element in which electrodes and terminal take-out portions are formed by different means.
Shown in A fibrous electrode 9 is arranged as an electrode on the surface of the base material 1 and the resistor 3 is formed thereon.
The configuration of the terminal take-out portion does not need to be separately provided because a part of the electrode is used.

[0019]

According to the first aspect of the present invention, there is provided a pair of electrodes formed on the surface of the base material and a resistor for generating heat between the electrodes, and a part of the electrodes is provided with an electrode. By having the terminal take-out portion directly fixed to the base material for taking out the terminal separately, the terminal take-out portion is directly fixed to the base material, and is firmly fixed to the base material even when the terminal is attached. Therefore, the tensile strength of the terminal can be made very large.

According to the second aspect of the present invention, by using a material having a volume resistivity of 10 −2 Ω · cm or less at the terminal extraction portion directly fixed to the base material for extracting the terminal, the current can be reduced. Even in the case where a large amount of current flows, heat generation at the terminal take-out portion can be reduced, so that unnecessary power is not used and a highly safe heating element can be obtained.

According to the third aspect of the present invention, the terminal take-out portion is made of a fibrous conductor, so that the joining material enters between the fibrous conductors at the time of terminal joining, and a large anchor effect can be obtained. The terminal and the terminal take-out portion can be firmly joined.

According to the fourth aspect of the present invention, since the fibrous conductor of the terminal take-out portion is woven into the base material, the fibrous conductor can be firmly fixed to the base material. Also, the connection with the terminal can be strengthened.

According to the fifth aspect of the present invention, since the conductor of the terminal take-out portion is made of a fibrous metal (metal fiber), a joining material such as solder is easily attached when the terminals are joined. The joining material enters between the metal fibers, and the terminal can be firmly joined by the anchor effect.

According to the sixth aspect of the present invention, since the base material is made of a cloth made of fiber, the terminal take-out portion can be easily fixed to the base material and can be made strong. Further, flexibility and durability of the substrate can be improved.

According to the seventh aspect of the present invention, since the electrode and the resistor formed on the surface of the base material are thinly formed by coating, a flexible heating element can be formed, and the electrode can be formed. By impregnating the terminal take-out portion, the bonding between the electrode and the terminal take-out portion can be realized with higher adhesion, the contact resistance can be reduced, and the heat generation at the terminal take-out portion can be reduced.

According to the eighth aspect of the present invention, all of the electrodes formed on the surface of the base material are woven into the base material by the fibrous conductor, thereby providing flexibility and This makes it possible to make the bonding with the resistor and the terminal more dense, and it is possible to eliminate the necessity of separately providing a terminal extraction portion.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a heating element according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a terminal extracting portion according to a second embodiment of the present invention.

FIG. 3 is a cross-sectional view of a terminal extraction portion according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a heating element according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base material 2 Electrode 3 Resistor 4 Terminal take-out part 5 Joining material 6 Terminal 7 Conducting wire 8 Insulation outer skin 9 Fiber electrode

Continued on the front page (72) Inventor Biao Nagai 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. 3K034 AA05 AA06 AA08 AA10 AA15 AA34 BB08 BB13 BB18 BC12 CA02 CA06 CA13 CA17 JA10 3K092 QA05 QB18 QB19 QB30 QB31 QC02 QC11 QC17 QC42 QC52 RF02 RF04 RF14 RF17 RF22 VV26 VV29 V32

Claims (8)

[Claims] 1. A device comprising a pair of electrodes formed on the surface of a base material and a resistor for generating heat between the electrodes, and a part of the electrodes directly connected to the base material to take out terminals separately from the electrodes. A heating element having a fixed terminal take-out portion. 2. The volume specific resistance value of a terminal take-out portion directly fixed to a base material for taking out a terminal is 10-2 Ω · cm.
The heating element according to claim 1, wherein the heating element is configured as follows. 3. The heating element according to claim 1, wherein the terminal take-out portion is a fibrous conductor. 4. The heating element according to claim 1, wherein the fibrous conductor of the terminal take-out portion is woven into the base material. 5. The heating element according to claim 1, wherein the fibrous conductor is made of a fibrous metal. 6. The heating element according to claim 1, wherein the base material is a cloth made of fiber. 7. The heating element according to claim 1, wherein the electrode and the resistor formed on the surface of the substrate are thinly formed by coating. 8. All of the electrodes for supplying electricity to the resistor formed on the surface of the substrate are made of fibrous conductors,
The terminal take-out portion is woven into the base material, and the terminal take-out portion is woven into the base material by a fibrous conductor. Heating element.