JPH0722077Y2 - Heat-sensitive heating wire - Google Patents
Heat-sensitive heating wireInfo
- Publication number
- JPH0722077Y2 JPH0722077Y2 JP1989048725U JP4872589U JPH0722077Y2 JP H0722077 Y2 JPH0722077 Y2 JP H0722077Y2 JP 1989048725 U JP1989048725 U JP 1989048725U JP 4872589 U JP4872589 U JP 4872589U JP H0722077 Y2 JPH0722077 Y2 JP H0722077Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- resin layer
- sensitive resin
- outer peripheral
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
本考案は、電気毛布や電気カーペット等に使用されるコ
ード状の感熱発熱線に関するものである。The present invention relates to a cord-shaped heat-sensitive heating wire used for electric blankets, electric carpets and the like.
一般に電気毛布や電気カーペット等の面状採暖具は、コ
ード状の感熱発熱線が蛇行状に配設されている。この感
熱発熱線は、自ら発熱して面状採暖具の温度を上昇させ
るとともに、感熱樹脂層の漏れ電流を取り出して制御回
路により面状採暖具の温度を検知し、その温度に応じた
制御回路からの制御信号により発熱状態が制御される。 このような感熱発熱線として、例えば、第２図に示すよ
うな構造のものが存在する。このものは、絶縁性の芯材
１と、その外周面にスパイラル状に巻装された発熱用の
内巻電極２と、これらの外周面に押出成型加工により被
覆される負の温度係数を有した感熱樹脂層３と、その感
熱樹脂層３の外周面にスパイラル状に巻装され、内巻電
極２から感熱樹脂層３を介して流れる漏れ電流の取り出
しを行う外巻電極６と、これらの外周面にテープを巻い
てなる保護層４と、さらに保護層４の外周面に押出成型
加工により被覆してなる絶縁外被層５と、により構成さ
れる。 この感熱樹脂層３は、例えばポリアミド樹脂や軟質ポリ
塩化ビニル樹脂にハロゲン化物や４級アンモニウム塩等
の添加剤を少量加えてなるもので、温度上昇に応じてイ
ンピーダンスが低下する。従って、面状採暖具、すなわ
ち感熱樹脂層３が内巻電極２によって温度上昇せしめら
れると、内巻電極２から感熱樹脂層３を介して流れて外
巻電極６によって取り出される漏れ電流が増加し、図外
制御回路によりそれらの温度を検知し、その温度に応じ
た制御回路からの制御信号により発熱状態が制御され
る。 また、保護層４は、例えば、ポリエステルフィルム等が
用いられており、感熱樹脂層３の添加剤が絶縁外被層５
側に移行したり、あるいは、軟質ポリ塩化ビニル樹脂よ
りなる絶縁外被層５中の可塑剤が感熱樹脂層３側へ移行
すること等について、すなわちこれによって感熱樹脂層
３のインピーダンス特性の経時変化が起きないように保
護する。 また、内巻電極２、外巻電極６は、銅又は銅合金が一般
的によく使用されており、直径が0.1mm程度の細丸線を
複数本ひき揃えて巻いたり、平角リボン状に圧延加工し
たものが巻かれている。 さらに、感熱発熱線を基材に配線固定させる場合には、
絶縁外被層５の外周面に、例えばポリエチレン樹脂等よ
りなる熱接着層７が設けられる。 一方、特公昭42−25879公報には、芯線に銅、鉄等の金
属材料よりなるリード線または発熱線をつる巻状に巻付
け、その上を鉄クロム線、ニクロム線等と比較して著し
い正の抵抗温度係数を有するチタン酸バリウム等の発熱
粒子と、ナイロン、P.V.C.等の低温度で溶解する熱溶解
性絶縁物とを混合したもので被覆し、この上に銅、鉄等
の金属材料よりなるリード線または発熱線をつる巻状に
巻付け、さらにこの上にビニール等の合成樹脂材料より
なる外被を被覆して成るヒータの構成が開示されてい
る。また、実公昭31−11665公報には、鉄線に亜鉛めっ
きを施しその表面にビニール系樹脂を一体に被覆形成し
た温床用電熱線（発熱線）が開示されている。さらに、
特公昭41−1744公報には、電線が銅の酸化を防ぐために
ニッケルのような適当な材料で被覆（めっき）されてい
るものが開示されている。Generally, in a sheet heating device such as an electric blanket or an electric carpet, cord-like heat-sensitive heating wires are arranged in a meandering shape. This heat-sensitive heating wire heats itself and raises the temperature of the surface heating tool, and the leak current of the heat-sensitive resin layer is taken out to detect the temperature of the surface heating tool by the control circuit, and the control circuit according to the temperature. The heat generation state is controlled by the control signal from. As such a heat-sensitive heating wire, for example, there is one having a structure as shown in FIG. This product has an insulating core material 1, a heat generating inner winding electrode 2 spirally wound around the outer peripheral surface thereof, and a negative temperature coefficient with which the outer peripheral surface is covered by extrusion molding. The heat-sensitive resin layer 3 and the outer-winding electrode 6 wound around the outer peripheral surface of the heat-sensitive resin layer 3 in a spiral shape to extract the leakage current flowing from the inner-winding electrode 2 through the heat-sensitive resin layer 3 and these. The protective layer 4 is formed by winding a tape around the outer peripheral surface, and the insulating outer layer 5 is formed by coating the outer peripheral surface of the protective layer 4 by extrusion molding. The heat-sensitive resin layer 3 is formed by adding a small amount of an additive such as a halide or a quaternary ammonium salt to, for example, a polyamide resin or a soft polyvinyl chloride resin, and the impedance decreases as the temperature rises. Therefore, when the temperature of the sheet-shaped warming tool, that is, the heat-sensitive resin layer 3 is raised by the inner winding electrode 2, the leakage current flowing from the inner winding electrode 2 through the heat-sensitive resin layer 3 and taken out by the outer winding electrode 6 increases. The temperature is detected by a control circuit (not shown), and the heat generation state is controlled by a control signal from the control circuit according to the temperature. Further, for the protective layer 4, for example, a polyester film or the like is used, and the additive of the heat-sensitive resin layer 3 is used as the insulating outer coat layer 5.
To the heat sensitive resin layer 3 side, that is, the plasticizer in the insulating jacket layer 5 made of soft polyvinyl chloride resin migrates to the heat sensitive resin layer 3 side, that is, the impedance characteristic of the heat sensitive resin layer 3 changes with time. Protects against accidents. In addition, the inner winding electrode 2 and the outer winding electrode 6 are generally made of copper or copper alloy, and a plurality of thin round wires having a diameter of about 0.1 mm are aligned and wound, or rolled into a rectangular ribbon. The processed product is wrapped. Furthermore, when fixing the heat-sensitive heating wire to the base material,
A thermal adhesive layer 7 made of, for example, polyethylene resin is provided on the outer peripheral surface of the insulating jacket layer 5. On the other hand, in Japanese Examined Patent Publication No. 42-25879, a lead wire or a heating wire made of a metal material such as copper or iron is wound around a core wire in a spiral shape, and it is markedly superior to iron-chromium wire, nichrome wire, etc. Coating with a mixture of heat-generating particles such as barium titanate having a positive temperature coefficient of resistance, and a heat-soluble insulator that melts at a low temperature such as nylon or PVC, on which a metal material such as copper or iron is coated. There is disclosed a configuration of a heater in which a lead wire or a heating wire made of the above is wound in a spiral shape, and an outer cover made of a synthetic resin material such as vinyl is further covered therewith. Further, Japanese Utility Model Publication No. 31-11665 discloses a heating wire for heating beds (heating wire) in which an iron wire is galvanized and a vinyl resin is integrally formed on the surface of the iron wire. further,
Japanese Patent Publication No. 41744/41 discloses that the electric wire is coated (plated) with a suitable material such as nickel to prevent the oxidation of copper.
前述した第２図に示す構造の感熱発熱線は、特定の使用
条件の下、すなわち外巻電極６と感熱樹脂層３との密着
が十分でない場合、これらの接触抵抗が変化し、外巻電
極６から取り出される漏れ電流は感熱樹脂層３の抵抗値
（インピーダンス）に正しく対応しなくなったり、強い
屈曲が繰り返えされると外巻電極６が疲労により断線し
易くなる。なお、外巻電極６を銅又は銅合金とした場
合、強度的な点から感熱樹脂層３に対しその外周面の前
部に密着させて巻装することは難しく、一部には隙間が
生じやすい。 本考案は、かかる事由に鑑みてなしたもので、その目的
とするところは、発熱状態の制御がより正確に行え、し
かも断線等が起こりにくい感熱発熱線を提供することに
ある。The heat-sensitive heating wire having the structure shown in FIG. 2 described above has a contact resistance that changes under a specific use condition, that is, when the outer winding electrode 6 and the heat-sensitive resin layer 3 are not sufficiently adhered to each other, and The leakage current taken out from 6 does not correctly correspond to the resistance value (impedance) of the thermosensitive resin layer 3, or if the strong bending is repeated, the outer winding electrode 6 is easily broken due to fatigue. When the outer-wound electrode 6 is made of copper or a copper alloy, it is difficult to wind the outer peripheral surface of the heat-sensitive resin layer 3 in close contact with the heat-sensitive resin layer 3 from the standpoint of strength, and a gap is partially formed. Cheap. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat-sensitive heating wire that can more accurately control a heat generation state and is less likely to cause wire breakage or the like.
かかる課題を解決するために、請求項１記載の感熱発熱
線は、絶縁性の芯材１と、この芯材の外周面にスパイラ
ル状に巻装された発熱用の内巻電極２′と、これら芯材
及び内巻電極の外周面に設けられた感熱樹脂層３と、こ
の感熱樹脂層の外周面にスパイラル状に巻装され内巻電
極から感熱樹脂層を介して流れる漏れ電流の取り出しを
行う外巻電極６′と、これら感熱樹脂層と外巻電極の外
周面に設けられた保護層４と、この保護層の外周面に設
けられた絶縁外被層５と、を有した感熱発熱線におい
て、前述外巻電極６′を、メッキを施した鉄製とし、か
つ感熱樹脂層３に食い込ませてなる構成としている。In order to solve such a problem, the heat-sensitive heating wire according to claim 1 comprises an insulating core material 1, an inner winding electrode 2'for spirally wound around the outer peripheral surface of the core material, The heat sensitive resin layer 3 provided on the outer peripheral surfaces of the core material and the inner wound electrode, and the leakage current flowing from the inner wound electrode through the heat sensitive resin layer spirally wound around the outer peripheral surface of the heat sensitive resin layer are extracted. Heat-sensitive heat generation having an outer-winding electrode 6 ′, a heat-sensitive resin layer and a protective layer 4 provided on the outer peripheral surface of the outer-winding electrode, and an insulating jacket layer 5 provided on the outer peripheral surface of the protective layer. In the wire, the outer winding electrode 6 ′ is made of plated iron and bites into the thermosensitive resin layer 3.
請求項１記載の構成によれば、外巻電極６′を、メッキ
を施した鉄製とし、かつ感熱樹脂層３に食い込ませてな
るものであるから、外巻電極６′は外周面の全部に確実
に密着させて巻装できており、その結果、外巻電極６′
と感熱樹脂層３間の接触抵抗が安定するので外巻電極
６′から取り出される感熱樹脂層３を流れる漏れ電流は
それの抵抗値（インピーダンス）に正確に対応したもの
となる。また、外巻電極６′は、感熱樹脂層３と確実に
一体化された状態となりその強度が補強されることとな
る。さらに、外巻電極６′は、銅又は銅合金製のものに
比して、固有抵抗が大きくなるので外部から侵入する雑
音の影響を小さくできる。According to the structure of claim 1, since the outer wound electrode 6'is made of plated iron and penetrates into the thermosensitive resin layer 3, the outer wound electrode 6'is formed on the entire outer peripheral surface. The outer winding electrode 6'can be wound so as to be firmly adhered.
Since the contact resistance between the heat-sensitive resin layer 3 and the heat-sensitive resin layer 3 becomes stable, the leakage current flowing through the heat-sensitive resin layer 3 taken out from the outer wound electrode 6'corresponds exactly to its resistance value (impedance). Further, the outer winding electrode 6'is surely integrated with the heat-sensitive resin layer 3 and its strength is reinforced. Further, since the outer winding electrode 6'has a larger specific resistance than that made of copper or copper alloy, the influence of noise intruding from the outside can be reduced.
以下、本考案の一実施例を、第１図に基づいて説明す
る。 １は絶縁製の芯材で、ポリエステルよりなる1500デニル
の素糸を撚ってなる。２′は内巻電極で、0.12mmφの導
体を複数本（例えば７本）ひきそろえ、従って、例えば
厚さが0.12mm、幅が0.84mmのテープ状のものを、芯材１
の外周面にスパイラル状に巻装したものである。この内
巻電極２′は、Snを0.3％を含んだ銅合金に、厚さが1.5
μｍのニッケルメッキを施しており、自らが発熱し、か
つ後述する感熱樹脂層を介して後述する外巻電極に至る
感熱樹脂層の漏れ電流の始点となる。３は感熱樹脂層
で、軟質ポリ塩化ビニル樹脂に第四級アンモニウム塩を
添加して負特性サーミスタ化した樹脂を、芯材１及び内
巻電極２′の外周面に、厚さが0.3mm程度となるよう押
出し成形により設けられる。 ６′は外巻電極で、厚さが0.05mm、幅が0.5mmの鉄製の
テープ状のものを、感熱樹脂層３の外周面にスパイラル
状に巻装したものである。この外巻電極６′は、例えば
キルド鋼を伸線、圧延して形成したもので、厚さ1.5μ
ｍのニッケルメッキを施しており、前述した内巻電極
２′から感熱樹脂層３を介して流れる感熱樹脂層３の漏
れ電流の取り出しを行う。この場合、具体的には、図外
制御回路は、漏れ電流が外巻電極６′に流れることによ
って得られる電圧を温度の代用値とし、この電圧、すな
わち感熱樹脂層３の温度に応じて発熱状態を制御する制
御信号を出力する。ここで重要なことは、この外巻電極
６′は、感熱樹脂層３の外周面に、0.02〜0.05mm程度の
くぼみ（Ａ）が生じる程度に食い込ませてあることであ
る。 ４は保護層で、厚さが25μｍのポリエステルテープを、
感熱樹脂層３と外巻電極６′の外周面に密に巻いて設け
られる。５は絶縁外被層で、軟質ポリ塩化ビニル樹脂に
より、保護層４の外周面に厚さが0.4mm程度となるよう
押出し成形により設けられる。７は熱接着層で、低密度
ポリエチレンにより、厚さが0.1mm程度となるよう絶縁
外被層５の外周面に設けられる。 この実施例は、内巻電極２′が発熱機能を有するタイプ
であるので、抵抗値設計上やむを得ず銅合金を使用して
いるが、この場合は外力を受けにくい内方に位置し、し
かも感熱樹脂層３が押出成形によってその外方に形成さ
れるのでその樹脂に確実に食い込んだ状態となる。 かかる感熱発熱線は、外巻電極６′を、メッキを施した
鉄製とし、かつ感熱樹脂層３に食い込ませてなるもので
あるから、外巻電極６′は外周面の全部に確実に密着さ
せて巻装できており、その結果、外巻電極６′と感熱樹
脂層３間の接触抵抗が安定するので外巻電極６′から取
り出される感熱樹脂層３を流れる漏れ電流はそれの抵抗
値（インピーダンス）に正確に対応したものとなる。従
って、内巻電極２′の発熱状態の制御がより正確に行
え、採暖具の温度制御が快適なものとなる。 また、外巻電極６′は、感熱樹脂層３と確実に一体化さ
れた状態となりその強度が補強され、従って対屈曲強度
が向上してそれの断線等が起こりにくくなる。 さらに、外巻電極６′は、銅又は銅合金製のものに比し
て、固有抵抗が大きい（固有抵抗値は、銅が2.3×10-6
Ω・cm、鉄が17×10-6Ω・cm）ので、外部から侵入する
雑音の影響を小さくできる。すなわち、取り出された漏
れ電流が入力される図外制御回路は、漏れ電流が外巻電
極６′に流れることによって得られる電圧を温度の代用
値としているから、漏れ電流が一定とした場合この電圧
が大きくでき、従って外部から侵入する雑音が一定であ
るとすると、所謂S/N比が大きくなるのである。 なお、従来の技術の項に記載した特公昭42−25879号に
は、正の抵抗温度係数を有する発熱粒子を挟むようにし
てリード線または発熱線をつる巻状に巻き付け、これら
に流れる電流により発熱させるヒータ、そしてこのリー
ド線または発熱線は銅、鉄等の金属材料よりなることが
開示されている。 しかしながら、このものは、この内方及び外方のリード
線または発熱線は銅、鉄等の金属材料が用いられている
ものの、これらの間に介在するものは温度上昇に応じて
インピーダンスが低下する（負の抵抗温度係数を有す
る）ものではなく、従って漏れ電流を取り出すものでは
なく本願考案とは基本構成が異なり、本願のような課題
も示唆されていない。すなわち、このような技術から、
本願考案のように、外巻電極６′をメッキを施した鉄製
とすること、さらには、外巻電極６′を感熱樹脂層３に
食い込ませるようにすることは想到し得ないものであ
る。An embodiment of the present invention will be described below with reference to FIG. Indicated at 1 is an insulating core material, which is made by twisting 1500 denier yarn made of polyester. Reference numeral 2'denotes an inner winding electrode, and a plurality of (for example, 7) 0.12 mmφ conductors are arranged. Therefore, for example, a tape-like member having a thickness of 0.12 mm and a width of 0.84 mm is used as the core material 1
Is wound around the outer peripheral surface in a spiral shape. The inner winding electrode 2'is made of a copper alloy containing 0.3% Sn and has a thickness of 1.5.
It is plated with nickel of μm, and it becomes a starting point of the leakage current of the heat-sensitive resin layer which itself generates heat and reaches the outer winding electrode described later through the heat-sensitive resin layer described later. 3 is a heat-sensitive resin layer, which is a soft polyvinyl chloride resin with a negative characteristic thermistor made by adding a quaternary ammonium salt to the outer peripheral surface of the core material 1 and the inner winding electrode 2 ', and the thickness is about 0.3 mm. Is provided by extrusion molding. Reference numeral 6'denotes an externally wound electrode, which is an iron tape-shaped electrode having a thickness of 0.05 mm and a width of 0.5 mm, which is spirally wound around the outer peripheral surface of the thermosensitive resin layer 3. The outer winding electrode 6'is formed by drawing and rolling killed steel, for example, and has a thickness of 1.5 μm.
m is nickel-plated, and the leakage current of the heat sensitive resin layer 3 flowing from the above-mentioned inner wound electrode 2'through the heat sensitive resin layer 3 is taken out. In this case, specifically, the non-illustrated control circuit uses the voltage obtained by the leakage current flowing through the outer winding electrode 6 ′ as a substitute value for the temperature, and generates heat according to this voltage, that is, the temperature of the heat-sensitive resin layer 3. It outputs a control signal that controls the state. What is important here is that the outer-winding electrode 6'is digged into the outer peripheral surface of the heat-sensitive resin layer 3 to such an extent that a recess (A) of about 0.02 to 0.05 mm is formed. 4 is a protective layer, 25 μm thick polyester tape,
The heat-sensitive resin layer 3 and the outer wound electrode 6'are closely wound around the outer peripheral surface of the outer wound electrode 6 '. Reference numeral 5 denotes an insulating coating layer, which is made of a soft polyvinyl chloride resin and is formed on the outer peripheral surface of the protective layer 4 by extrusion molding so as to have a thickness of about 0.4 mm. Reference numeral 7 is a heat-bonding layer, which is made of low-density polyethylene and is provided on the outer peripheral surface of the insulating jacket layer 5 so as to have a thickness of about 0.1 mm. In this embodiment, since the inner winding electrode 2'has a function of generating heat, a copper alloy is unavoidably used in designing the resistance value. Since the layer 3 is formed on the outside by extrusion molding, the layer 3 is surely invaded into the resin. Such a heat-sensitive heating wire is made by plating the outer-winding electrode 6'with iron and biting it into the heat-sensitive resin layer 3. Therefore, the outer-winding electrode 6'should be firmly adhered to the entire outer peripheral surface. Since the contact resistance between the outer-winding electrode 6'and the heat-sensitive resin layer 3 is stabilized, the leakage current flowing through the heat-sensitive resin layer 3 taken out from the outer-winding electrode 6'has its resistance value ( Impedance). Therefore, the heat generation state of the inner winding electrode 2'can be more accurately controlled, and the temperature control of the warming tool becomes comfortable. Further, the outer-winding electrode 6 ′ is surely integrated with the heat-sensitive resin layer 3 and its strength is reinforced, so that the flexural strength is improved and disconnection thereof is less likely to occur. Further, the outer wound electrode 6'has a larger specific resistance than that made of copper or a copper alloy (specific resistance value of copper is 2.3 × 10 -6).
Ω ・ cm, iron is 17 × 10 -6 Ω ・ cm), so the effect of noise entering from the outside can be reduced. That is, the unillustrated control circuit to which the extracted leakage current is input uses the voltage obtained by the leakage current flowing through the outer wound electrode 6'as a substitute value for the temperature. Can be made large, and if the noise that enters from the outside is constant, the so-called S / N ratio becomes large. Incidentally, in Japanese Patent Publication No. 42-25879 described in the section of the prior art, a lead wire or a heating wire is wound in a spiral shape so as to sandwich heating particles having a positive temperature coefficient of resistance, and heat is generated by a current flowing through these. It is disclosed that the heater and the lead wire or the heating wire are made of a metal material such as copper or iron. However, this inner and outer lead wires or heating wires are made of a metal material such as copper, iron, etc., but the impedance between the intervening lead wires and the heating wire decreases with temperature rise. It is not (having a negative temperature coefficient of resistance) and therefore does not take out leakage current, and its basic configuration is different from that of the present invention, and the problems of the present application are not suggested. That is, from such technology,
As in the present invention, it is not conceivable that the outer wound electrode 6'is made of plated iron, and further that the outer wound electrode 6'is made to bite into the thermosensitive resin layer 3.
本考案の感熱発熱線は、外巻電極６′を、メッキを施し
た鉄製とし、かつ感熱樹脂層３に食い込ませてなるもの
であるから、外巻電極６′は外周面の全部に確実に密着
させて巻装できており、その結果、外巻電極６′と感熱
樹脂層３間の接触抵抗が安定するので外巻電極６′から
取り出される感熱樹脂層３を流れる漏れ電流はそれの抵
抗値（インピーダンス）に正確に対応したものとなり、
発熱状態の制御がより正確に行えるものとなる。 また、外巻電極６′は、感熱樹脂層３と確実に一体化さ
れた状態となりその強度が補強されることとなり、対屈
曲強度が向上してそれの断線等が起こりにくくなる。 さらに、外巻電極６′は、銅又は銅合金製のものに比し
て、固有抵抗が大きくなるので外部から侵入する雑音の
影響を小さくできる。In the heat-sensitive heating wire of the present invention, the outer-winding electrode 6'is made of plated iron and bites into the heat-sensitive resin layer 3, so that the outer-winding electrode 6'can be securely formed on the entire outer peripheral surface. Since the contact resistance between the outer-winding electrode 6'and the heat-sensitive resin layer 3 is stabilized, the leakage current flowing through the heat-sensitive resin layer 3 taken out from the outer-winding electrode 6'can be wound tightly. It will correspond exactly to the value (impedance),
The heat generation state can be controlled more accurately. Further, the outer-winding electrode 6 ′ is surely integrated with the heat-sensitive resin layer 3 and its strength is reinforced, so that the flexural strength is improved and disconnection thereof is less likely to occur. Further, since the outer winding electrode 6'has a larger specific resistance than that made of copper or copper alloy, the influence of noise intruding from the outside can be reduced.
【図１】 本考案の一実施例を示す感熱発熱線の斜視図である。FIG. 1 is a perspective view of a heat-sensitive heating wire according to an embodiment of the present invention.
【図２】 従来例を示す感熱発熱線の斜視図である。FIG. 2 is a perspective view of a heat-sensitive heating wire showing a conventional example.
1:芯材 ２′：内巻電極 3:感熱樹脂層 4:保護層 5:絶縁外被層 ６′：外巻電極 7:熱接着層 1: Core material 2 ': Inner winding electrode 3: Thermosensitive resin layer 4: Protective layer 5: Insulation outer layer 6': Outer winding electrode 7: Thermal adhesive layer
Claims (1)
イラル状に巻装された発熱用の内巻電極と、これら芯材
及び内巻電極の外周面に設けられた感熱樹脂層と、この
感熱樹脂層の外周面にスパイラル状に巻装され内巻電極
から感熱樹脂層を介して流れる漏れ電流の取り出しを行
う外巻電極と、これら感熱樹脂層と外巻電極の外周面に
設けられた保護層と、この保護層の外周面に設けられた
絶縁外被層と、を有した感熱発熱線において、前記外巻
電極を、メッキを施した鉄製とし、かつ感熱樹脂層に食
い込ませてなることを特徴とする感熱発熱線。1. An insulating core material, an internally wound electrode for heat generation spirally wound around the outer peripheral surface of the core material, and a heat-sensitive resin provided on the outer peripheral surfaces of the core material and the inner wound electrode. Layer, an outer winding electrode spirally wound around the outer peripheral surface of the heat sensitive resin layer to take out a leakage current flowing from the inner wound electrode through the heat sensitive resin layer, and outer peripheral surfaces of the heat sensitive resin layer and the outer wound electrode. In a heat-sensitive heating wire having a protective layer provided in, and an insulating coating layer provided on the outer peripheral surface of the protective layer, the outer winding electrode is made of plated iron, and a heat-sensitive resin layer is formed. A heat-sensitive heating wire characterized by being cut into it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989048725U JPH0722077Y2 (en) | 1989-04-25 | 1989-04-25 | Heat-sensitive heating wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989048725U JPH0722077Y2 (en) | 1989-04-25 | 1989-04-25 | Heat-sensitive heating wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02141989U JPH02141989U (en) | 1990-11-30 |
| JPH0722077Y2 true JPH0722077Y2 (en) | 1995-05-17 |
Family
ID=31565797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989048725U Expired - Lifetime JPH0722077Y2 (en) | 1989-04-25 | 1989-04-25 | Heat-sensitive heating wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722077Y2 (en) |
-
1989
- 1989-04-25 JP JP1989048725U patent/JPH0722077Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02141989U (en) | 1990-11-30 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |