JP3077982B2 - Electric coil - Google Patents
Electric coilInfo
- Publication number
- JP3077982B2 JP3077982B2 JP01010628A JP1062889A JP3077982B2 JP 3077982 B2 JP3077982 B2 JP 3077982B2 JP 01010628 A JP01010628 A JP 01010628A JP 1062889 A JP1062889 A JP 1062889A JP 3077982 B2 JP3077982 B2 JP 3077982B2
- Authority
- JP
- Japan
- Prior art keywords
- insulating
- coil
- semiconductive
- semiconductive layer
- paint
- 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
Landscapes
- Insulated Conductors (AREA)
Description
【発明の詳細な説明】 「産業上の利用分野」 本発明は、絶縁電線特にコイル用巻線として高電圧が
印加されて使用されるため耐高電圧性が要求されるコイ
ル用絶縁エナメル線とこれにより形成される電気コイル
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an insulated enameled wire for a coil which is required to have high voltage resistance because it is used by applying a high voltage to an insulated wire, particularly a coil winding. The present invention relates to an electric coil formed thereby.
「従来の技術」 従来の一般の絶縁材料を被覆したコイル用絶縁エナメ
ル線では、たとえば10数KVといった高電圧印加状態での
使用時絶縁皮膜表面で激しいコロナ放電が発生し、異常
時には絶縁皮膜をコロナ放電破壊するため、寿命が短か
く、高電圧機器用途には適したものではなかった。`` Conventional technology '' Conventional insulated enameled wires for coils coated with a general insulating material generate severe corona discharge on the surface of the insulating film when used at a high voltage of, for example, more than 10 KV. Because of corona discharge breakdown, it had a short life and was not suitable for high-voltage equipment applications.
このため、コイル用絶縁エナメル線の皮膜厚を厚くす
ることで対応してきた。For this reason, it has been coped with by increasing the film thickness of the insulating enameled wire for coils.
「発明が解決しようとする課題」 しかし乍ら、このような対応においても、コロナ放電
をおさえることはできず、耐圧寿命の改善は不十分であ
った。"Problems to be Solved by the Invention" However, even in such a measure, corona discharge could not be suppressed, and improvement in the withstand voltage life was insufficient.
また、このような耐圧寿命アップのための厚膜化は、
コイル外径を大きくして機器の小型化を妨げるといった
問題点を有していた。In addition, such thickening for the purpose of increasing the pressure resistance life is as follows.
There has been a problem that the coil outer diameter is increased to prevent downsizing of the device.
それ故に本発明の目的は、コロナ放電を防止し、薄膜
でも耐圧寿命が長い優れたコイル用絶縁エナメル線とこ
れにより形成される電気コイルを提供することにある。Therefore, an object of the present invention is to provide an insulated enameled wire for a coil, which prevents corona discharge and has a long withstand voltage life even with a thin film, and an electric coil formed therefrom.
「課題を解決するための手段」 即ち本発明は、電気導体の周上に絶縁塗料を塗布焼付
することにより設けられる絶縁層と、この絶縁層の外層
に半導電性塗料を塗布焼付することにより設けられる半
導電性層を有する絶縁エナメル線を直接巻回して成るこ
とを特徴とする電気コイルである。[Means for Solving the Problems] That is, the present invention provides an insulating layer provided by applying and baking an insulating paint on the periphery of an electric conductor, and applying and baking a semiconductive paint to an outer layer of the insulating layer. An electric coil characterized by being directly wound with an insulated enamel wire having a semiconductive layer provided.
なお上記本発明に於いて、その実施の態様として下記
が含まれるが、これに限定されるものではない。The embodiments of the present invention include the following, but are not limited thereto.
イ）上記の半導電性層が、導電物質を混練した塗料を塗
布焼付することにより形成されたもの。A) The above-mentioned semiconductive layer is formed by applying and baking a paint in which a conductive substance is kneaded.
ロ）上記の半導電性層が、カーボンブラックを混練した
塗料を塗布焼付することにより形成されたもの。B) The above-mentioned semiconductive layer is formed by applying and baking a paint in which carbon black is kneaded.
ハ）上記の半導電性層を、焼付後も溶剤で簡単に除去で
きるように、半導電性を有する熱可塑性樹脂塗料を塗布
焼付することにより形成したもの。C) The above-mentioned semiconductive layer is formed by applying a semiconductive thermoplastic resin paint and baking so that the semiconductive layer can be easily removed with a solvent even after baking.
「作用」 後述実施例からも判る様に、半導電性層を有するコイ
ル用絶縁エナメル線は、皮膜に生ずる静電位勾配がゆる
やかであるため、絶縁皮膜に至るまでコロナ放電が極め
て発生しにくく、従来に比べて非常に長時間の耐電圧寿
命が得られる。`` Function '' As can be seen from the examples described later, the insulating enameled wire for a coil having a semiconductive layer has a gentle electrostatic potential gradient generated in the film, so that corona discharge is extremely unlikely to occur up to the insulating film, An extremely long withstand voltage life can be obtained as compared with the related art.
以下に詳細に本発明を例示の図面について説明する。 The invention will be described in detail below with reference to exemplary drawings.
本発明における半導電性層を有するコイル用絶縁エナ
メル線は、第１図に示す様なものであり、導体（１）上
に絶縁層（２）が、絶縁層（２）の上に半導電性層
（３）が順次設けられて成る。The insulated enameled wire for a coil having a semiconductive layer according to the present invention is as shown in FIG. 1, in which an insulating layer (2) is provided on a conductor (1), and a semiconductive material is provided on an insulating layer (2). The active layer (3) is sequentially provided.
絶縁層（２）としては、ポリビニルホルマール、ポリ
ウレタン、ポリエステル、ポリエステルイミド、ポリア
ミドイミド、ポリイミドなど絶縁性を有するものであれ
ばいかなるものでも使用可能である。As the insulating layer (2), any material having an insulating property such as polyvinyl formal, polyurethane, polyester, polyester imide, polyamide imide, and polyimide can be used.
半導電性層（３）としては、いわゆる半導電性を示す
ものならばいかなるものでも使用可能であるが、一般に
はカーボンブラック粉末のような半電性物質を絶縁塗料
中に混練した半導電性塗料を塗布焼付した皮膜が有効で
ある。As the semiconductive layer (3), any material having a so-called semiconductivity can be used. In general, a semiconductive material such as carbon black powder is kneaded in an insulating paint. A coating applied and baked is effective.
またエナメル線の端末において、半導電性層の除去が
難しく、半導電性層と導体とが接触して半導電性層にも
電流が流れる恐れのある場合には、半導電性層のみを容
易に確実に除去するために、フェノキシ、ナイロンの様
な熱可塑性樹脂塗料をベースにした半導電性塗料が有効
である。Also, at the end of the enameled wire, if it is difficult to remove the semiconductive layer and there is a risk that current will flow through the semiconductive layer due to contact between the semiconductive layer and the conductor, only the semiconductive layer can be easily removed. For reliable removal, semiconductive paints based on thermoplastic resin paints such as phenoxy and nylon are effective.
「実施例」 以下に本発明の実施例を比較例と対比して説明する
が、本発明はこれらの実施例によって限定されるもので
はない。"Examples" Hereinafter, examples of the present invention will be described in comparison with comparative examples, but the present invention is not limited to these examples.
比較例： 直径0.2mmφの銅導体（１）上に、ポリウレタン絶縁
塗料を横型焼付炉にて塗布焼付して、厚さ24.5μの絶縁
皮膜（２）を形成した。構造を第２図に示した。Comparative Example: A polyurethane insulating paint was applied and baked on a copper conductor (1) having a diameter of 0.2 mm in a horizontal baking furnace to form an insulating film (2) having a thickness of 24.5 μm. The structure is shown in FIG.
このポリウレタン線の特性を第１表に示した。 The characteristics of this polyurethane wire are shown in Table 1.
実施例1: 比較例で使用したのと同じ直径0.2mmφの銅導体
（１）上にポリウレタン絶縁塗料を横型焼付炉にて塗布
焼付した後（この絶縁層を（２）で示す）、その上にカ
ーボン粉末を混練したポリウレタン塗料を塗布焼付して
構造を第１図に示す様な半導電性層（３）を有するコイ
ル用絶縁エナメル線を作成した。絶縁層（２）の厚みは
19.5μ、半導電性層（３）の厚みは６μである。Example 1: A polyurethane insulating paint was applied and baked in a horizontal baking furnace on a copper conductor (1) having a diameter of 0.2 mm, which was the same as that used in the comparative example (this insulating layer is indicated by (2)). Then, a polyurethane paint in which carbon powder was kneaded was applied and baked to prepare an insulating enameled wire for a coil having a semiconductive layer (3) as shown in FIG. The thickness of the insulating layer (2)
19.5 μ and the thickness of the semiconductive layer (3) are 6 μ.
この半導電性層を有するコイル用絶縁エナメル線の特
性を第１表に示す。Table 1 shows the characteristics of the insulating enameled wire for a coil having the semiconductive layer.
（注）※コロナ発生電圧測定方法 試料に電圧を印加してオシロスコープのリサージュ波
形の乱れからコロナ発生電圧を測定。 (Note) * Measurement method of corona generation voltage The corona generation voltage is measured by applying a voltage to the sample and measuring the oscilloscope's Lissajous waveform.
最小検出放電電荷：約数100pc 実施例2: 比較例で使用したのと同じ直径0.2mmφの銅導体
（１）上にポリウレタン絶縁塗料を横型焼付炉にて塗布
焼付した後（この絶縁層を（２）で示す）、その上にカ
ーボン粉末を混練したフェノキシ塗料を塗布焼付して構
造を第１図に示す様な半導電性層（３）を有するコイル
用絶縁エナメル線を作成した。絶縁層（２）の厚みは1
9.5μ、半導電性層（３）の厚みは６μであった。Minimum detected discharge charge: about several hundred pcs Example 2: Polyurethane insulating paint was applied and baked on a copper conductor (1) having the same diameter of 0.2 mmφ as used in the comparative example in a horizontal baking furnace (this insulating layer was 2)), and a phenoxy paint kneaded with carbon powder was applied thereonto and baked to form an insulating enameled wire for a coil having a semiconductive layer (3) as shown in FIG. The thickness of the insulating layer (2) is 1
The thickness of the semiconductive layer (3) was 9.5 μm and 6 μm.
実施例２による半導電性層を有するコイル用絶縁エナ
メル線は、最外層の半導電性層がグリコールエーテル
類、ケトン類などの極性溶剤で軽くふくだけで取り除く
ことができるので、このエナメル線の端末において中央
部にある銅導体のみを端子止めする際の作業性が非常に
良好である。The insulating enamelled wire for a coil having a semiconductive layer according to the second embodiment can be removed by simply wiping the outermost semiconductive layer with a polar solvent such as glycol ethers or ketones. The workability at the time of terminating only the copper conductor at the center in the terminal is very good.
「発明の効果」 以上説明したように本発明の半導電性を有するコイル
用絶縁エナメル線は、絶縁破壊を引き起こすコロナ放電
が極めて生じにくい。[Effects of the Invention] As described above, in the semi-conductive insulated enameled wire for a coil according to the present invention, corona discharge causing dielectric breakdown is extremely unlikely to occur.
このことから、高電圧機器（フライバックトランス、
イグニッションコイル）に使用することにより信頼性向
上、絶縁皮膜の薄膜化が期待でき、その工業的利用価値
は極めて高い。From this, high voltage equipment (flyback transformer,
By using it for an ignition coil, it can be expected to improve reliability and reduce the thickness of the insulating film, and its industrial utility value is extremely high.
コイル用絶縁エナメル線の断面図を例示する図に於い
て、第１図は本発明のもの、第２図は従来のものであ
る。 （１）……導体、（２）……絶縁層、（３）……半導電
性層FIG. 1 shows a sectional view of an insulated enameled wire for a coil, in which FIG. 1 shows the present invention and FIG. 2 shows a conventional example. (1) ... conductor, (2) ... insulating layer, (3) ... semiconductive layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 安部 保 愛知県名古屋市南区菊住１丁目７番10号 住友電気工業株式会社名古屋製作所内 (72)発明者 紀平 和伸 愛知県名古屋市南区菊住１丁目７番10号 住友電気工業株式会社名古屋製作所内 (56)参考文献 特開 昭49−46200（ＪＰ，Ａ) 特開 昭53−37850（ＪＰ，Ａ) 特開 昭62−103908（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tamotsu Abe 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi Prefecture Sumitomo Electric Industries, Ltd. Nagoya Works (72) Inventor Kazunobu Kihira 1 Kikuzumi, Minami-ku, Nagoya-shi, Aichi Prefecture No. 7-10, Sumitomo Electric Industries, Ltd., Nagoya Works (56) References JP-A-49-46200 (JP, A) JP-A-53-37850 (JP, A) JP-A-62-103908 (JP, A) )
Claims (1)
した絶縁層と、この絶縁層の上に半導電性塗料を塗布焼
付で形成した半導電性層を有する絶縁エナメル線を直接
巻回して成ることを特徴とする電気コイル。1. An insulation enameled wire having an insulating layer formed by applying and baking an insulating paint on an electric conductor and a semiconductive layer formed by applying and baking a semiconductive paint on the insulating layer are directly wound. An electric coil characterized by being turned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01010628A JP3077982B2 (en) | 1989-01-18 | 1989-01-18 | Electric coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01010628A JP3077982B2 (en) | 1989-01-18 | 1989-01-18 | Electric coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02189814A JPH02189814A (en) | 1990-07-25 |
| JP3077982B2 true JP3077982B2 (en) | 2000-08-21 |
Family
ID=11755482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01010628A Expired - Lifetime JP3077982B2 (en) | 1989-01-18 | 1989-01-18 | Electric coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3077982B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8163999B2 (en) | 2008-10-31 | 2012-04-24 | Hitachi Cable, Ltd. | Insulation-coated wire |
| WO2022249265A1 (en) * | 2021-05-25 | 2022-12-01 | 三菱電機株式会社 | Insulated wire and coil using said insulated wire |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007005174A (en) * | 2005-06-24 | 2007-01-11 | Sumitomo Electric Wintec Inc | Insulation-coated wire, coil and its manufacturing method |
| JP5108251B2 (en) * | 2006-04-26 | 2012-12-26 | 住友電気工業株式会社 | Insulated wire and electric coil using the same |
| ITTO20111098A1 (en) * | 2011-11-29 | 2013-05-30 | Eldor Corp Spa | IGNITION COIL UNIT WITH ELECTRICAL CONNECTION EXTENSION OF AN IGNITION CANDLE |
| CN111508639B (en) * | 2020-04-14 | 2021-06-08 | 苏州巨峰电气绝缘系统股份有限公司 | ATF oil-resistant corona-resistant enameled wire for electric automobile motor and preparation method thereof |
| CN111627592A (en) * | 2020-07-01 | 2020-09-04 | 西比里电机技术(苏州)有限公司 | High-temperature-resistant corona-resistant ceramic film covered wire and preparation method thereof |
| CN112210268A (en) * | 2020-10-13 | 2021-01-12 | 溧阳市佳禾电子材料有限公司 | B-grade acetal wire enamel capable of being coated at high speed and preparation process thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4946200A (en) * | 1972-09-14 | 1974-05-02 |
-
1989
- 1989-01-18 JP JP01010628A patent/JP3077982B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8163999B2 (en) | 2008-10-31 | 2012-04-24 | Hitachi Cable, Ltd. | Insulation-coated wire |
| WO2022249265A1 (en) * | 2021-05-25 | 2022-12-01 | 三菱電機株式会社 | Insulated wire and coil using said insulated wire |
| JP7487845B2 (en) | 2021-05-25 | 2024-05-21 | 三菱電機株式会社 | Insulated wire and coil using the insulated wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02189814A (en) | 1990-07-25 |
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