JPS61239582A - Heat sensitive wire - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は電気毛布２電気カーペツト等の面状採暖具に使
用される発熱線の発熱量切換えが可能なコード状の感熱
線に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cord-shaped heat-sensitive wire that is used in planar heating devices such as electric blankets and electric carpets and is capable of changing the amount of heat generated from the heat-generating wire.

従来の技術 一般に電気毛布や電気カーペット等の面状採暖具は使い
始めの速熱性が要求されることから太きＰ な消費電力が必要とされるが、定常安定使用時は　　　
：６０〜５０℃の採暖温度で制御すればよいことから、
　　　１初期の消費電力はど大きな容量は必要としない
。　　　□特に最近普及している電気カーペットの如き
採　　　□暖面積の広い製品の場合、採暖温度が３０〜
５０℃に　　　゛よるよう０Ｎ１０ＦＦ制御していても
、　ＯＮ時には６００〜１２００Ｗの電力容量が必要と
なることから、他の部　　：屋で同程度の電気カーペッ
ト全使用したい場合と□ か大電力容量の器具を同時使用したい場合が生じでもヒ
ーーズブレーカーが動作してしまい併用が　　　□でき
にくい問題点があった。Conventional technology In general, surface heating devices such as electric blankets and electric carpets require high power consumption because they are required to heat up quickly at the beginning of use.
:Since it is sufficient to control the heating temperature at 60 to 50℃,
1. Initial power consumption does not require a large capacity. □Especially in the case of products with a large heating area, such as electric carpets that have become popular recently, the heating temperature should be 30~30℃.
Even if the 0N10FF is controlled to 50℃, a power capacity of 600 to 1200W is required when it is turned on, so if you want to use all the electric carpets of the same level in other rooms, or if you want to use a large power capacity Even if it were necessary to use the devices at the same time, the heath breaker would operate, making it difficult to use them together.

従来、この種の問題点を解決する方策として。Conventionally, as a measure to solve this kind of problem.

例えば実開昭５８−６５７９１号公報に提案されている
如　　Ｊく、芯糸の外周囲に発熱作用をする金属導体、
感熱層、検知作用をする金属導体、感熱層２発熱作　　
１′。For example, as proposed in Japanese Utility Model Application Publication No. 58-65791, a metal conductor that generates heat around the outer circumference of the core yarn,
Heat-sensitive layer, metal conductor for sensing action, heat-sensitive layer 2 heat-generating action
1′.

用をする金属導体、絶縁外被の順に配設したコー　　　
にド状発熱体の構造とし、内、外側の発熱作用をす　　
　ｊる金属導体に流れる電流を切換えることにより、　
　　１使い始めの速熱性と定常安定時の小さい電力容量
　　　；による採暖を満足するものと、実開昭５８−６
５７９’２号　　　１３Ｐ 公報に提案されている如く、芯糸の外周囲に発熱作用を
する複数の金属導体、感熱層、検知電極の作用をする金
属導体、絶縁外被の順に配設したコ−ド状発熱体構造と
し、芯糸の外周囲に平行巻着した複数の発熱作用をする
金属導体に流れる電流、Ｉ２・１　　を切換えることに
より、使い始めの速熱性と定常安定時の小さい電力容世
による採暖を可能ならしめていた。The metal conductor used for the
It has a do-shaped heating element structure, and all heat generation effects are generated inside and outside.
By switching the current flowing through the metal conductor,
1. Fast heating at the beginning of use and small power capacity during steady state stability;
579'2 No. 13P As proposed in the publication, a core yarn is provided with a plurality of metal conductors that generate heat around the outer periphery of the core yarn, a heat-sensitive layer, a metal conductor that acts as a detection electrode, and an insulating jacket, in this order. By adopting a do-shaped heating element structure and switching the current, I2.1, flowing through multiple metal conductors that generate heat and are wound in parallel around the outer circumference of the core thread, it achieves rapid heating at the beginning of use and small power capacity during steady state stability. It made it possible for the world to take heat.

発明が解決しようとする問題点 実開昭５８−６５７９１号公報に提案されたコード状発
熱体によれば、採暖温度を制御するスイッチング回路と
の接続によジ５例えば設定温度に達するまでの初期通電
時は内、外側の発熱作用をする金属導体に同時に電流金
泥し、設定温度に達した後は内側の発熱作用をする金属
導体のみに電流を流すことによりＯＮ　／　ＯＦＦ　Ｉ
ＩＪ　ｑ＠−２行なうことにより小容量の電力で採暖が
できる反面、感熱層が２重に被覆されたことによりコー
ド状発熱体の外径が太くかつ硬くなるので、可撓性が劣
り面状採暖具としてコード状発熱体を蛇行状に配設する
際に作業しにくくかつ配設不良を起し易い他に、コード
状発熱体の巻線工程と押出成形の工程が多くなることか
らコストが高くなる欠点を有していた。Problems to be Solved by the Invention According to the cord-shaped heating element proposed in Japanese Utility Model Application Publication No. 58-65791, connection with a switching circuit for controlling the heating temperature can be used to control heating temperature, for example, in the initial stage until the set temperature is reached. When energizing, current is applied to the inner and outer metal conductors that generate heat at the same time, and once the set temperature is reached, current is passed only to the inner metal conductor that generates heat, thereby turning ON/OFF.
By performing IJ q@-2, heating can be done with a small amount of electricity, but on the other hand, the outer diameter of the cord-shaped heating element becomes thick and hard due to the double coating of the heat-sensitive layer, resulting in poor flexibility and poor surface shape. When arranging cord-shaped heating elements in a meandering manner as a heating device, it is difficult to work and is prone to poor placement, and the process of winding the cord-shaped heating elements and extrusion molding increases, which increases costs. It had the disadvantage of being expensive.

また実開昭５８−６５７９２号公報に提案されたコード
状発熱体によれば１発熱作用をする複数の金属導体が裸
の寸ま芯糸の外周囲に一定間隔でヌパイラルに巻着され
ているが１巻線工程時のピッチバラツキによって一定間
隔がくずれて隣の金属と接触したり、あるいは面状採暖
具の加工時又は使用時の加熱により芯糸が熱収縮するこ
と等から一定間隔に平行巻着されている発熱作用をする
金属導体が接触することによって異なる発熱作用をさせ
ることができなくなる欠点を有していた。In addition, according to a cord-shaped heating element proposed in Japanese Utility Model Application Publication No. 58-65792, a plurality of metal conductors that produce heat are wound spirally around the outer periphery of a bare core thread at regular intervals. However, due to pitch variations during the single winding process, the regular intervals may be distorted and come into contact with adjacent metal, or the core yarn may shrink due to heat during processing or use of the planar heating device, so the threads may be parallel to each other at regular intervals. This has the disadvantage that the metal conductors that are wrapped around each other and have a heat generating effect cannot produce different heat generating effects due to contact with each other.

問題点を解決するための手段 芯糸の外周囲に平行に巻着した複数本の発熱線の少なく
とも１本は８０〜１９０℃の温度領域で溶融軟化する例
えばブチラール、ポリアミド２ポリエステル、エポキシ
等の樹脂の単一物、共重合物あるいは混合物を発熱線例
えば銅や銅合金の表面に押出成形加工又は溶剤に樹脂を
溶解させた液に浸Ｐ 漬することにより０．００５〜０．２ｍｍの厚さ、の溶
融性絶縁層を予め形成し、かつ複数本並べて平行巻着す
る際に両端のいずれか一方に配設するものとした。Means for solving the problem At least one of the plurality of heating wires wound in parallel around the outer circumference of the core yarn is made of a material such as butyral, polyamide 2 polyester, epoxy, etc. that melts and softens in the temperature range of 80 to 190°C. A single substance, copolymer or mixture of resins can be extruded onto the surface of a heating wire, such as copper or copper alloy, or immersed in a solution of the resin dissolved in a solvent to a thickness of 0.005 to 0.2 mm. A fusible insulating layer was formed in advance, and when a plurality of insulating layers were lined up and wound in parallel, it was disposed on one of both ends.

作　　用 芯糸外周囲に平行に巻着した少なくとも１本の発熱線に
予め溶融性絶縁層を設けたことにより次の作用を有する
発熱量切換可能な感熱線が得られる。By providing a fusible insulating layer in advance on at least one heating wire wound in parallel around the outer periphery of the core yarn, a heat-sensitive wire having the following functions and capable of changing the amount of heating can be obtained.

（１）　　外径が細くできて可撓性を有する。(1) It has a thin outer diameter and is flexible.

（２）　　平行巻着された発熱線同志が接触しても抵抗
値が変化せず、電力切換機能を阻害しない。(2) Even if heating wires wound in parallel come into contact with each other, the resistance value does not change and the power switching function is not inhibited.

（３）　　感熱線が使用されている際に万一異常過熱を
起しても感熱層及び溶融性絶縁層が溶融して発熱線と検
知線が短絡接触するので、異常温度検知ができる。(3) Even if abnormal overheating occurs when the heat-sensitive wire is used, the heat-sensitive layer and the meltable insulating layer will melt and the heating wire and the detection wire will come into short-circuit contact, making it possible to detect abnormal temperatures.

（４）　　感熱線の成形性及び面状採暖具へ組込む際の
加工性が良いので低コスト化が可能である。(4) Since the heat-sensitive wire has good moldability and workability when incorporated into a planar heating device, it is possible to reduce costs.

実施例 以下本発明の実施例を図面に従い説明する。Example Embodiments of the present invention will be described below with reference to the drawings.

第１図は感熱線９を示したもので、１はポリエＰ ステルや耐熱ポリアミド等からなる芯糸、２は通　　　
　：電により発熱作用をする銅、銅合金等からなる発熱
線、６は第２図の拡大断面で示す銅、銅合金等からなる
素線７の表面に溶融性絶縁層８を被覆して通電により発
熱作用をする発熱線、４は感熱線が異常温度になった際
に体積抵抗が低下して漏洩電流が増加するような負の抵
抗温度係数を有し。Figure 1 shows the heat-sensitive wire 9, where 1 is a core yarn made of polyester P stell or heat-resistant polyamide, etc., and 2 is a thread.
: A heating wire made of copper, copper alloy, etc. that generates heat by electricity; 6 is a wire 7 made of copper, copper alloy, etc. shown in an enlarged cross section in FIG. 2; The heat-generating wire 4 that generates heat has a negative temperature coefficient of resistance such that when the heat-sensitive wire reaches an abnormal temperature, the volume resistance decreases and the leakage current increases.

１５０〜１９０℃の温度領域で溶融するポリアミド系樹
脂例えばナイロン１１；Ｊナイロン１２．変性ナイａ７
１１、ポリエヌテル共重合ナイロン等の感熱層、５は感
熱層４に流れる漏洩電流を検知する検知線。Polyamide resins that melt in the temperature range of 150 to 190°C, such as nylon 11; J nylon 12. Denatured nai a7
11, a heat-sensitive layer made of polyester copolymerized nylon, etc.; 5, a detection line for detecting leakage current flowing through the heat-sensitive layer 4;

６は絶縁性を確保する例えばポリ塩化ビニルの絶縁外被
である。発熱線２，６は複数本並べられた状態で芯糸１
に巻着されるが、溶融性絶縁層８を有する発熱線６が両
端に配設された状態で巻着されている為１巻着工程時に
ピッチバラツキが多少発生しても隣に巻着した巻線と絶
縁ができることから、溶融性絶縁層８を有する発熱線６
と有しない発熱線２とを別々に通電して発熱させられ、
制御回路にスイッテヲ設けておけば発熱量の切換え７Ｐ が可能になる。Reference numeral 6 denotes an insulating jacket made of polyvinyl chloride, for example, to ensure insulation. A plurality of heating wires 2 and 6 are lined up in the core yarn 1.
However, since the heating wire 6 having the fusible insulating layer 8 is arranged at both ends, even if some pitch variation occurs during the first winding process, it will not be possible to wind the wire next to it. Since it can be insulated from the winding, the heating wire 6 has a fusible insulating layer 8.
and the heating wire 2 that does not have the wire are separately energized to generate heat,
If a switch is provided in the control circuit, the amount of heat generated can be changed 7P.

また溶融性絶縁層８を素線７に被覆するものとしては、
０．０５〜０．２ｍｍの厚い皮膜が得たい場合はポリア
ミドやポリエステルを押出成形により被覆し０．００５
〜０．０５ｍｍの薄い皮膜が得たい場合はポリブチラー
ル、ポリアミド、ポリエステル、エポキシ等を溶剤で可
溶させ５〜１００ボイズの被膜加工し易い粘度に調整し
た液中に素線７を浸漬し１次に５０〜２５０℃の炉中を
通すことにより造膜できる。Further, as a method for coating the wire 7 with the fusible insulating layer 8,
If you want to obtain a thick film of 0.05 to 0.2 mm, cover it with polyamide or polyester by extrusion molding.
If you want to obtain a thin film of ~0.05 mm, immerse the wire 7 in a solution of polybutyral, polyamide, polyester, epoxy, etc. dissolved in a solvent and adjusted to a viscosity that makes it easy to form a film of 5 to 100 voids. Next, a film can be formed by passing it through a furnace at 50 to 250°C.

更に溶融性絶縁層８は面状採暖具が異常使用されて部分
過熱が起きても焼損事故に至らないよう８０〜１９０℃
の温度領域で溶融軟化する。すなわち。Furthermore, the meltable insulating layer 8 is kept at a temperature of 80 to 190°C to prevent burnout even if the planar heating device is used abnormally and overheats partially.
It melts and softens in the temperature range of . Namely.

感熱線が異常過熱状態におかれると負の抵抗温度係数を
有する感熱層４が１５０〜１９０℃において体積抵抗が
低下あるいは溶融し、溶融性絶縁層８も８０〜１９０℃
で溶融軟化するので発熱線２，６と検知線５との間に漏
洩電流が増したりあるいは短絡状態ｊ　　　になって過
電流が流れ、制御回路中にある過電流検知素子が動作し
て発熱線２，３に流れる電流を遮断することができる。When the heat-sensitive wire is placed in an abnormally overheated state, the heat-sensitive layer 4 having a negative temperature coefficient of resistance decreases in volume resistance or melts at 150-190°C, and the meltable insulating layer 8 also melts at 80-190°C.
As a result, the leakage current increases between the heating wires 2, 6 and the detection wire 5, or a short circuit occurs, causing an overcurrent to flow, and the overcurrent detection element in the control circuit operates, causing the heating wire to It is possible to cut off the current flowing to 2 and 3.

従って溶融性絶縁層８は低温領域例えば２０〜８０℃に
おいては大きい体積抵抗を有し、高温領域例えば８０〜
１５０℃では低い体積抵抗に変化する特性のものや、２
０℃から１５０℃に昇温するにつれて体積抵抗が徐々に
低下する特性のものでもよく、前者の例としてはポリブ
チラール、ポリエステルがあり、後者の例ではポリアミ
ド、エポキシがある。溶融性絶縁層８０体積抵抗を温度
の上昇に伴い低下する変化率を大きくしたい場合は、界
面活性剤や含窒素環化合物等の添加剤を０１〜６重量％
添加すればよい。Therefore, the fusible insulating layer 8 has a large volume resistance in a low temperature range, e.g. 20 to 80°C, and a high volume resistance in a high temperature range, e.g.
There are those with characteristics that change to low volume resistance at 150℃, and those with 2
The material may have a characteristic that the volume resistance gradually decreases as the temperature rises from 0° C. to 150° C. Examples of the former include polybutyral and polyester, and examples of the latter include polyamide and epoxy. If you want to increase the rate of change in the volume resistance of the fusible insulating layer 80 as the temperature rises, add additives such as surfactants and nitrogen-containing ring compounds in an amount of 0.1 to 6% by weight.
Just add it.

発熱線２，６は形状が直径０．１〜０３間の円形であれ
ば所定の発熱量を出す抵抗値が得やすい、溶融性絶縁層
８（！ｌ−被覆しやすい、芯糸１の外周囲に複数本並べ
て平行巻着しやすい等のメリットがあるが２本発明は円
形に限定するものではなく２例えば厚さ０．０６〜０．
０８ｍｍ、　ｌｉ〕［］、５〜２叫のリボン電線であっ
てもよい。また発熱線２，６は予め銀や錫のメッキが施
されたものであってもよい。If the heating wires 2 and 6 have a circular shape with a diameter of 0.1 to 0.3 mm, it is easy to obtain a resistance value that produces a predetermined amount of heat. Although it has the advantage that it is easy to line up multiple pieces around the circumference and wind them in parallel, the present invention is not limited to circular shapes.
08mm, li][], 5 to 2 wires may be used. Further, the heating wires 2 and 6 may be plated with silver or tin in advance.

感熱層４は前述した如くポリアミド系樹脂をＱ、１〜０
．３１Ｗｎの厚さに押出成形加工し溶融性絶縁層８と　
　　□Ｐ 密着溶着せしめて得られ、負の抵抗温度係数を有してお
り、１５０〜１９０℃においては体積抵抗が著しく低下
したり、溶融する性質があることから、漏洩電流を検知
する制御回路と組合せることにより。The heat sensitive layer 4 is made of polyamide resin with Q, 1 to 0, as described above.
．． The meltable insulating layer 8 is formed by extrusion molding to a thickness of 31 Wn.
□P It is obtained by close welding and has a negative temperature coefficient of resistance, and its volume resistance decreases markedly at 150 to 190°C and has the property of melting, so it is used as a control circuit for detecting leakage current. By combining.

面状採暖具の使用中に万一局部的な異常過熱が発生して
も、異常状態を検知し発熱線２，３に流れる電流を遮断
することができ、焼損に至るような事故を未然に防止す
ることができる。このように焼損に至る前に面状採暖具
の通電を遮断する為には、感熱層４が１５０〜１９０℃
で溶融することが好ましい。もし感熱層４が１５０℃以
下で溶融する特性を有していると、異常温度に達してい
なくても発熱線２．乙に流れる電流を遮断する安全装置
が動作したり、耐熱耐久性が劣り長期間性能を維持でき
ないことがら好壕しくない。また感熱層４が１９０℃Ｊ
２Ｌ上で溶融する特性を有する場合１面状採暖具の異常
過熱状態が長くかつ高温になることから。Even if localized abnormal overheating occurs while using the planar heating device, the abnormal condition can be detected and the current flowing through the heating wires 2 and 3 can be cut off, preventing accidents that could lead to burnout. It can be prevented. In this way, in order to cut off the electricity to the sheet heating device before it burns out, the temperature of the heat sensitive layer 4 must be 150 to 190°C.
It is preferable to melt at If the heat-sensitive layer 4 has the property of melting at 150°C or lower, the heating wire 2. This is not a good idea because the safety device that cuts off the current flowing to the battery may operate, or the heat resistance and durability may be poor and the performance may not be maintained for a long period of time. In addition, the heat sensitive layer 4 is 190℃J
If the heating device has the property of melting above 2L, the abnormal overheating state of the one-sided heating device will be long and the temperature will be high.

面状採暖具や床面の黄変を起したり１人体に対してやけ
どをさせることになり好ましくない。従って感熱層４の
溶融する温度すなわち融点は１５０〜０Ｐ １９０℃、更に好ましくは１５５〜１７０℃が適してい
る。　　□前述した溶融性絶縁層８の溶融軟化温度を８
０〜１９０℃に制限した理由は以下の通りである。すな
わ　　　：ち、溶融性絶縁層８の溶融軟化温度が８０℃
以■の　　　□場合１面状採暖具の通常の使用温度が３
０〜５０℃であるが、感熱線９は６０〜８０℃になって
いることか　　゛ら耐熱耐久性の点で性能的に好ましく
なく、溶融　　　□゛軟化温度が１９０℃以」二の場合
は異常過熱温度が高く　　　：なりすぎて面状採暖具の
異常過熱状態が長くかつ高温になることから、床面の黄
変や人体に対して　　　゛やけどをさせる危険があり好
ましくない。This is undesirable as it may cause yellowing of the heating device or the floor surface, or cause burns to the human body. Therefore, the temperature at which the heat-sensitive layer 4 melts, that is, the melting point, is suitably 150 to 190°C, more preferably 155 to 170°C. □The melting and softening temperature of the above-mentioned meltable insulating layer 8 is set to 8.
The reason for limiting the temperature to 0 to 190°C is as follows. In other words, the melting and softening temperature of the fusible insulating layer 8 is 80°C.
In the following □ case, the normal operating temperature of the one-sided heating device is 3
0 to 50°C, but the temperature of the heat sensitive wire 9 is 60 to 80°C, which is unfavorable in terms of heat resistance and durability. Abnormal overheating temperature is too high: If it becomes too high, the abnormal overheating state of the planar heating device will last for a long time and the temperature will be high, which is undesirable because there is a risk of yellowing of the floor surface and burns to the human body.

従って、溶融性絶縁層８の溶融軟化温度は８０〜１９０
℃、更に好ましくは１２０〜１７０℃が適している。Therefore, the melting and softening temperature of the fusible insulating layer 8 is 80 to 190.
°C, more preferably 120 to 170 °C.

感熱層４の融点が１５０〜１９０℃に対して溶融性絶縁
・層８の溶融軟化温度が８０〜１９０℃で問題が生じな
い理由は、溶融性絶縁層８が軟化しても感熱層４が軟化
しなければ発熱線２，３は移動したり漏洩電流が著しく
大きくなって誤動作をすることがないことによる。検知
線５の形状は感熱線９の外径を細く仕上げる一的と漏洩
電流を検知し易くする１１Ｐ 為にリボン状が好寸しい。The reason why no problem occurs when the melting point of the heat-sensitive layer 4 is 150-190°C and the melting softening temperature of the meltable insulating layer 8 is 80-190°C is that even if the meltable insulating layer 8 is softened, the heat-sensitive layer 4 is This is because unless the heating wires 2 and 3 are softened, the heating wires 2 and 3 will not move or the leakage current will become significantly large, resulting in malfunction. The shape of the detection wire 5 is suitably ribbon-like in order to make the outer diameter of the heat-sensitive wire 9 thinner and to make it easier to detect leakage current.

第６図は本発明の別の実施例を示したものであり、１〜
６までは第１図で示した構造とほぼ同じで、異なるのは
溶融性絶縁層を施していない発熱線２が２本と、溶融性
絶縁層を施した発熱線６が１本である点で、平行巻着す
る場合溶融性絶縁層番施した発熱線６は必ず平行配設し
た時両端のいずれかになっているが２本発明ではこれだ
けに限定するだけでなく、全ての発熱線に溶融性絶縁層
が被覆されていてもよいことは当然である。１０は絶縁
外被６の外周囲に被覆された接着層であり。FIG. 6 shows another embodiment of the present invention.
The structure up to 6 is almost the same as that shown in Fig. 1, except that there are two heating wires 2 without a fusible insulating layer and one heating wire 6 with a fusible insulating layer. In the case of parallel winding, the heating wires 6 coated with a fusible insulating layer are always at either end when they are arranged in parallel.2 However, in the present invention, the present invention is not limited only to this, but is applied to all heating wires. Naturally, it may be coated with a fusible insulating layer. Reference numeral 10 denotes an adhesive layer coated around the outer periphery of the insulating jacket 6.

その目的とするところは感熱線９を蛇行配列固定するこ
とと面状採暖具に一体化した際に感熱線９を固定する作
用を果し、材質としてはポリオレフィン、ポリアミド、
ポリエステル等の樹脂で融点は８０〜１３０℃が適する
。Its purpose is to fix the heat-sensitive wires 9 in a meandering arrangement and to fix the heat-sensitive wires 9 when integrated into a planar heating device.The material is polyolefin, polyamide,
A suitable resin such as polyester has a melting point of 80 to 130°C.

第４図は感熱線９を接着フィルム１１との接触部分のみ
で接着層１０と加熱加圧により配設固定してなるヒータ
ユニット１２である。接着フィルム１１はポリオレフィ
ン・ポリアミド、ポリエステル等の単一重合物あるいは
混合物をフィルム状にしたものや不織布やアルミ箔の両
面にポリオレフィン。FIG. 4 shows a heater unit 12 in which a heat-sensitive wire 9 is disposed and fixed to an adhesive layer 10 only at the contact portion with an adhesive film 11 by heating and pressing. The adhesive film 11 is a film made of a single polymer or a mixture of polyolefin, polyamide, polyester, etc., or a nonwoven fabric or aluminum foil with polyolefin on both sides.

ポリアミド、ポリエステル等の単一重合物あるいは混合
物をラミネートしたもの、史には不織布単体であっても
良い。It may be a laminate of a single polymer or a mixture of polyamide, polyester, etc., or it may be a single nonwoven fabric.

第５図は第４図のフィルムユニット１２をマット地１３
と表地１４との間に介在させて加熱加圧の方法で接着フ
ィルム１１及び接着層１０を熱溶融させて一体化させた
面状採暖具である。このような面状採暖具において、前
述した構造の感熱線９を配設することにより、広い面積
を採暖していても初（υ１通電時の１〜）の電力容量で
済むよう設計できる。FIG. 5 shows the film unit 12 of FIG. 4 on a matte surface 13.
This is a planar heating device in which the adhesive film 11 and the adhesive layer 10 are interposed between the outer material 14 and the adhesive film 11 and the adhesive layer 10 are heat-fused and integrated by heating and pressurizing. In such a planar heating device, by arranging the heat-sensitive wire 9 having the above-described structure, it can be designed so that even when heating a wide area, only the initial power capacity (1 to 1 when υ1 is energized) is sufficient.

ろ　　　　　３ 発明の効果 芯糸の外周に複数本の発熱線を平行に巻着した少なくと
も１本は予め８０〜１９０℃で溶融軟化する溶融性絶縁
層を設け、かつ平行巻着した両端のいずれかに配設する
ことにより１次の効果が期待できる。Effects of the invention 3 A plurality of heat generating wires are wound in parallel around the outer periphery of a core yarn, at least one of which is provided with a meltable insulating layer that melts and softens at 80 to 190°C, and either of the ends of the parallel wound wires is provided. A first-order effect can be expected by arranging it.

（月　感熱線の外径が細くかつ可撓性を有し１面状採暖
具に組込む際の加工性が良い。(The outer diameter of the heat-sensitive wire is thin and flexible, making it easy to work when incorporated into a one-sided heating device.

３Ｐ （２）　　発熱線の発熱量切換えが可能になり２面状採
暖具を使用している際の電力容量が小さくて済み、他の
大電力容量を必要とする器具との同時１．：　　　　　
使用が可能となる。3P (2) It is possible to switch the heat output of the heating wire, so the power capacity when using a two-sided heating device is small, and it can be used simultaneously with other devices that require a large power capacity. :
It becomes possible to use it.

・さ１．１ ′（３）　　面状採暖具が部分的に異常過熱を起しても
。・Sa1.1'(3) Even if the planar heating device partially becomes abnormally overheated.

溶融性絶縁層と感熱層とが溶融軟化することにより異常
温度を検知できる。Abnormal temperatures can be detected by melting and softening the meltable insulating layer and the heat-sensitive layer.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例を示す感熱線の構造図、第２
図は同溶融性絶縁層を施した発熱線の断面図、第３図は
本発明の他の一実施例を示す感熱線の構造図、第４図及
び第５図は本発明の感熱線を使用した応用例であり、そ
れぞれヒータユニットと面状採暖具の断面図を示す。 １・・・芯糸、２，６・・・発熱線。 ４・・・感熱層、　　　　　５・・・検知線。 ６・・・絶縁外被、　　　　８・・・溶融性絶縁層。 ９・・・感熱線。Figure 1 is a structural diagram of a heat-sensitive wire showing an embodiment of the present invention, Figure 2
The figure is a cross-sectional view of a heat-generating wire provided with the same fusible insulating layer, FIG. 3 is a structural diagram of a heat-sensitive wire showing another embodiment of the present invention, and FIGS. This is an example of the application used, and shows a cross-sectional view of a heater unit and a planar heating device, respectively. 1... core thread, 2, 6... heating wire. 4...Thermosensitive layer, 5...Detection line. 6... Insulating jacket, 8... Fusible insulating layer. 9...Heat-sensitive wire.

Claims (1)

【特許請求の範囲】[Claims] 芯糸（１）と、この芯糸（１）上に平行に巻着した複数
の発熱線（２）、（３）と、この外周を被覆した１５０
〜１９０℃の融点を有するポリアミド系樹脂からなる感
熱層（４）と、この感熱層（４）に巻着した検知線（５
）と、これら全体を被覆した絶縁外被（６）とからなる
感熱線において、前記複数の発熱線（２）、（３）の少
なくとも１本は８０〜１９０℃の温度領域で溶融軟化す
る溶融性絶縁層（８）が被覆されていることを特徴とす
る感熱線。A core yarn (1), a plurality of heating wires (2) and (3) wound in parallel on the core yarn (1), and a wire 150 that covers the outer periphery of the core yarn (1).
A heat-sensitive layer (4) made of polyamide resin having a melting point of ~190°C, and a detection wire (5) wrapped around this heat-sensitive layer (4).
) and an insulating jacket (6) that covers the entirety of these wires, at least one of the plurality of heating wires (2) and (3) is a molten wire that melts and softens in a temperature range of 80 to 190°C. A heat-sensitive wire characterized in that it is coated with a heat-sensitive insulating layer (8).