JP2010251134A - Lubricative insulated wire and motor using the same - Google Patents
Lubricative insulated wire and motor using the same Download PDFInfo
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本発明は、潤滑性絶縁電線およびそれが用いられたモータに関する。さらに詳しくは、例えば、エアコンディショナー、冷蔵庫などに用いられるコンプレッサ用モータ、変圧器などに好適に使用しうる潤滑性絶縁電線およびそれを巻線したコイルを有するモータに関する。 The present invention relates to a lubricated insulated wire and a motor using the same. More specifically, for example, the present invention relates to a lubricating insulated wire that can be suitably used for an air conditioner, a compressor motor used in a refrigerator, a transformer, and the like, and a motor having a coil around which it is wound.
絶縁電線は、導体と該導体を被覆する絶縁層とからなり、この絶縁層が損傷を受けた場合には、レアー不良やアース不良を発生するおそれがある。そこで、例えば、分布巻モータにおいては、絶縁電線が巻き取られたコイルをステータスロットのコア内に挿入する際に、摺擦によって絶縁電線の絶縁層が損傷し、レアー不良やアース不良が発生するのを回避するために、絶縁電線に潤滑剤を塗布することにより、絶縁電線にすべり性が付与されている。従来、絶縁電線にすべり性を付与するための潤滑剤として、例えば、常温で液体の有機潤滑油である流動パラフィンなどを用いることが提案されている（例えば、特許文献１の４欄３４〜３９行などを参照）。また、パラフィン類、ワックスなどの潤滑性成分を絶縁層中に含有させることによって絶縁電線のすべり性を高める方法も採られている（例えば、特許文献２参照）。 An insulated wire is composed of a conductor and an insulating layer covering the conductor, and when this insulating layer is damaged, there is a risk of causing a layer failure or a grounding failure. Therefore, for example, in a distributed winding motor, when the coil around which the insulated wire is wound is inserted into the core of the status lot, the insulating layer of the insulated wire is damaged by rubbing, resulting in a layer failure or a ground failure. In order to avoid this, slipping is imparted to the insulated wire by applying a lubricant to the insulated wire. Conventionally, it has been proposed to use, for example, liquid paraffin, which is an organic lubricating oil that is liquid at room temperature, as a lubricant for imparting slipperiness to an insulated wire (for example, column 4 34 to 39 of Patent Document 1). See line etc.). Moreover, the method of improving the slipperiness of an insulated wire is also taken by including lubricating components, such as paraffins and wax, in an insulating layer (for example, refer patent document 2).
しかし、絶縁電線のすべり性を向上させると、その絶縁電線からなるコイルにワニスの含浸処理を施したとき、絶縁電線に対するワニスの濡れ性が低下するため、絶縁電線とワニスとの固着力が低下する。一方、絶縁電線に対するワニスの濡れ性を向上させるために絶縁電線のすべり性を低下させると、そのコイルをステータスロットのコア内に挿入する際の動摩擦係数が大きくなって挿入圧力が高くなるため、作業性の低下を招いたり、コイルをコア内に挿入する際の摺擦によって絶縁電線の絶縁層が損傷し、絶縁不良を起こすおそれがある。また、絶縁電線と含浸ワニスとの固着性を高めるとともに、コストを低減させる観点から、絶縁電線の絶縁層に含まれる潤滑性成分の使用量を低減させることが望まれている。 However, when the slip of an insulated wire is improved, when the coil made of the insulated wire is impregnated with varnish, the wettability of the varnish to the insulated wire is reduced, so the adhesion between the insulated wire and the varnish is reduced. To do. On the other hand, if the slip of the insulated wire is reduced in order to improve the wettability of the varnish to the insulated wire, the dynamic friction coefficient when inserting the coil into the core of the status lot increases and the insertion pressure increases, There is a risk that workability may be reduced, or the insulating layer of the insulated wire may be damaged by rubbing when the coil is inserted into the core, resulting in poor insulation. In addition, it is desired to reduce the amount of the lubricating component contained in the insulating layer of the insulated wire from the viewpoint of improving the adhesion between the insulated wire and the impregnated varnish and reducing the cost.
本発明は、前記従来技術に鑑みてなされたものであり、絶縁電線の絶縁層の最外層に含まれるワックスなどの潤滑性成分の量を低減させても表面のすべり性およびワニスとの固着性の双方に優れた潤滑性絶縁電線を提供することを課題とする。本発明は、製造時において、コイルをステータスロットのコア内に挿入する際の摺擦によって絶縁電線の絶縁層が損傷を受けがたくすることにより、絶縁性能の信頼性が高められ、さらに絶縁電線とワニスとの固着性に優れたモータを提供することを課題とする。 The present invention has been made in view of the above prior art, and even if the amount of a lubricating component such as wax contained in the outermost layer of the insulating layer of the insulated wire is reduced, the slipperiness of the surface and the adhesion to the varnish are reduced. It is an object of the present invention to provide a lubricating insulated wire excellent in both of the above. In the present invention, the reliability of the insulation performance is improved by making the insulation layer of the insulated wire less susceptible to damage due to rubbing when the coil is inserted into the core of the status lot at the time of manufacture. It is an object of the present invention to provide a motor having excellent adhesion between the varnish and the varnish.
本発明は、導体および該導体を被覆する絶縁層からなる絶縁電線に潤滑剤を塗布してなる潤滑性絶縁電線であって、前記絶縁層の最外層がポリアミドイミド、ポリエステルイミド、ポリイミド、ポリアミド、ポリエステルおよびポリウレタンからなる群より選ばれた少なくとも１種の樹脂を含有し、前記潤滑剤が塗布された絶縁電線の静摩擦係数が０．１０以下で、その動摩擦係数が０．１０以下であり、前記潤滑剤を塗布する前の絶縁電線の静摩擦係数が０．１２以上で、その動摩擦係数が０．１１以上であることを特徴とする潤滑性絶縁電線に関する。本発明の潤滑性絶縁電線は、前記構成を有するので、絶縁電線の絶縁層の最外層に含まれるワックスなどの潤滑性成分の量を低減させてもその表面のすべり性に優れており、コイルをステータスロットのコア内に挿入する際の動摩擦係数が小さいことから、その挿入圧力が低く作業性を高めるとともに、コイルをコア内に挿入する際の摺擦による損傷を受けがたく、さらにワニスとの固着性にも優れている。 The present invention is a lubricating insulated wire formed by applying a lubricant to an insulated wire comprising a conductor and an insulating layer covering the conductor, wherein the outermost layer of the insulating layer is polyamideimide, polyesterimide, polyimide, polyamide, Containing at least one resin selected from the group consisting of polyester and polyurethane, the static friction coefficient of the insulated wire coated with the lubricant is 0.10 or less, the dynamic friction coefficient is 0.10 or less, The present invention relates to a lubricated insulated wire characterized in that the static friction coefficient of the insulated wire before applying the lubricant is 0.12 or more and the dynamic friction coefficient is 0.11 or more. Since the lubricating insulated wire of the present invention has the above-described configuration, even if the amount of the lubricating component such as wax contained in the outermost layer of the insulating layer of the insulated wire is reduced, the surface has excellent slipperiness, and the coil Since the dynamic friction coefficient when inserting the coil into the core of the status lot is low, its insertion pressure is low and the workability is improved, and the coil is not easily damaged by rubbing when inserted into the core. It also has excellent adhesion.
本発明の潤滑性絶縁電線は、フェノール樹脂系含浸ワニスとの固着力が３０ｋｇ以上である場合には、さらにモータの信頼性を高めることができる。 The lubricating insulated wire of the present invention can further enhance the reliability of the motor when the fixing force with the phenol resin-based impregnated varnish is 30 kg or more.
なお、本明細書において、固着力とは、導体の直径が１ｍｍ、長さが８ｃｍの絶縁電線を３０本束ねてフェノール樹脂系ワニスを固着させた後、折り曲げるときの最大荷重を意味する。 In the present specification, the adhering force means the maximum load when bending after bending 30 insulated wires having a conductor diameter of 1 mm and a length of 8 cm to fix the phenolic varnish.
本発明の潤滑性絶縁電線は、潤滑性成分の量が前記最外層を構成する樹脂１００質量部あたり１質量部以下の割合で含まれている場合には、含浸ワックスとの固着性を高めることができるとともに、当該絶縁層の最外層のコストを低減させることができる。 The lubricating insulated wire of the present invention improves the adhesion to the impregnated wax when the amount of the lubricating component is contained at a ratio of 1 part by mass or less per 100 parts by mass of the resin constituting the outermost layer. And the cost of the outermost layer of the insulating layer can be reduced.
本発明の潤滑性絶縁電線は、潤滑性成分がポリエチレンワックスである場合には、絶縁電線の表面のすべり性を向上させることができる。 The lubricating insulated wire of the present invention can improve the slip property of the surface of the insulated wire when the lubricating component is polyethylene wax.
本発明の潤滑性絶縁電線は、前記潤滑剤が分子中にエステル基を有し、常温で液体の脂肪酸エステルを含有する場合には、その表面のすべり性を向上させることができるとともに、ワニスとの固着性にも優れている。 When the lubricant has an ester group in the molecule and contains a fatty acid ester that is liquid at room temperature, the lubricating insulated wire of the present invention can improve the slipperiness of the surface, It also has excellent adhesion.
本発明の潤滑性絶縁電線は、前記脂肪酸エステルが式（Ｉ）：
Ｒ1−Ｃ（ＣＨ2ＯＯＣ−Ｒ2）3 （Ｉ）
（式中、Ｒ1は炭素数１〜４のアルキル基、Ｒ2は炭素数８〜１２のアルキル基を示す）
で表される脂肪酸トリエステルである場合には、その表面のすべり性をより向上させることができるとともに、ワニスとの固着性により優れている。
In the lubricating insulated wire of the present invention, the fatty acid ester is represented by the formula (I):
R 1 —C (CH 2 OOC—R 2 ) 3 (I)
(Wherein R 1 represents an alkyl group having 1 to 4 carbon atoms, and R 2 represents an alkyl group having 8 to 12 carbon atoms)
In the case of the fatty acid triester represented by the formula, it is possible to further improve the slipperiness of the surface and to improve the adhesion to the varnish.
本発明の潤滑性絶縁電線は、前記式（Ｉ）で表される脂肪酸トリエステルにおいて、Ｒ1がエチル基であり、Ｒ2が炭素数９〜１１のアルキル基である場合には、その表面のすべり性およびワニスとの固着性に優れている。 In the fatty acid triester represented by the above formula (I), the lubricated insulated wire of the present invention has its surface when R 1 is an ethyl group and R 2 is an alkyl group having 9 to 11 carbon atoms. Excellent slipperiness and adhesion to varnish.
本発明のモータは、前記潤滑性絶縁電線を巻線したコイルを有するので、その製造時において、コイルをステータスロットのコア内に挿入する際の摺擦によって絶縁電線の絶縁層が損傷を受けがたいことから、絶縁性能の信頼性に優れているのみならず、絶縁電線とワニスとの固着性にも優れている。 Since the motor of the present invention has a coil wound with the lubricating insulated wire, the insulating layer of the insulated wire is damaged by sliding when the coil is inserted into the core of the status lot. Therefore, not only is the insulation performance reliable, but also the insulation between the insulated wire and the varnish is excellent.
本発明の潤滑性絶縁電線は、絶縁電線の絶縁層の最外層に含まれるワックスなどの潤滑性成分の量を低減させても表面のすべり性およびワニスとの固着性の双方に優れている。また、本発明のモータは、その製造時において、コイルをステータスロットのコア内に挿入する際の摺擦によって絶縁電線の絶縁層が損傷を受けがたいことから絶縁性能の信頼性に優れているのみならず、絶縁電線とワニスとの固着性にも優れている。 The lubricating insulated wire of the present invention is excellent in both surface slipperiness and adhesion to varnish even if the amount of a lubricating component such as wax contained in the outermost layer of the insulating layer of the insulated wire is reduced. Further, the motor of the present invention is excellent in reliability of insulation performance because the insulation layer of the insulated wire is not easily damaged by sliding when the coil is inserted into the core of the status lot at the time of manufacture. In addition, the adhesiveness between the insulated wire and the varnish is excellent.
本発明の潤滑性絶縁電線は、導体および該導体を被覆する絶縁層からなる絶縁電線に潤滑剤を塗布したものである。本発明の潤滑性絶縁電線は、前記絶縁層の最外層が、ポリアミドイミド、ポリエステルイミド、ポリイミド、ポリアミド、ポリエステルおよびポリウレタンからなる群より選ばれた少なくとも１種の樹脂を含有し、前記潤滑剤が塗布された絶縁電線の静摩擦係数が０．１０以下で、その動摩擦係数が０．１０以下であり、前記潤滑剤を塗布する前の絶縁電線の静摩擦係数が０．１２以上で、その動摩擦係数が０．１１以上であることを特徴とする。本発明の潤滑性絶縁電線は、前記構成を有するので、絶縁電線の絶縁層の最外層に含まれるワックスなどの潤滑性成分の量を低減させても表面のすべり性に優れているとともに、ワニスとの固着性にも優れている。 The lubricating insulated wire of the present invention is obtained by applying a lubricant to an insulated wire comprising a conductor and an insulating layer covering the conductor. In the lubricating insulated wire of the present invention, the outermost layer of the insulating layer contains at least one resin selected from the group consisting of polyamideimide, polyesterimide, polyimide, polyamide, polyester and polyurethane, and the lubricant is The static friction coefficient of the coated insulated wire is 0.10 or less, the dynamic friction coefficient is 0.10 or less, the static friction coefficient of the insulated wire before applying the lubricant is 0.12 or more, and the dynamic friction coefficient is It is 0.11 or more. Since the lubricating insulated wire of the present invention has the above-described configuration, it has excellent surface slipperiness even when the amount of the lubricating component such as wax contained in the outermost layer of the insulating layer of the insulated wire is reduced, and the varnish It also has excellent adhesion.
本発明に用いられる絶縁電線は、丸線および平角線のいずれであってもよい。また、絶縁電線に用いられる導体の種類およびその直径、絶縁層の種類などは、一般に絶縁電線に用いられているものと同様であればよい。 The insulated wire used in the present invention may be either a round wire or a flat wire. Moreover, the kind of conductor used for an insulated wire, its diameter, the kind of insulating layer, etc. should just be the same as what is generally used for the insulated wire.
前記絶縁層に好適な樹脂としては、例えば、ポリエステルイミド、ポリアミドイミド、ポリイミド、ポリアミド、ポリエステル、ポリウレタン、ポリ塩化ビニル、ポリエチレンなどが挙げられる。これらのなかでは、本発明の潤滑性絶縁電線の耐熱性、耐薬品性、耐油性などを高める観点から、ポリエステルイミド、ポリアミドイミドおよびポリイミドが好ましい。前記絶縁層の最外層は、絶縁電線の絶縁層の最外層に含まれるワックスなどの潤滑性成分の量を低減させても本発明の潤滑性絶縁電線の絶縁層とワニスとの固着性を高める観点から、ポリアミドイミド、ポリエステルイミド、ポリイミド、ポリアミド、ポリエステルおよびポリウレタンからなる群より選ばれた少なくとも１種の樹脂を含有する。 Examples of the resin suitable for the insulating layer include polyesterimide, polyamideimide, polyimide, polyamide, polyester, polyurethane, polyvinyl chloride, and polyethylene. Among these, polyesterimide, polyamideimide, and polyimide are preferable from the viewpoint of improving the heat resistance, chemical resistance, oil resistance, and the like of the lubricating insulated wire of the present invention. The outermost layer of the insulating layer enhances the adhesion between the insulating layer and the varnish of the lubricating insulated wire of the present invention even if the amount of a lubricating component such as wax contained in the outermost layer of the insulated wire is reduced. From the viewpoint, it contains at least one resin selected from the group consisting of polyamideimide, polyesterimide, polyimide, polyamide, polyester and polyurethane.
絶縁電線のすべり性を向上させるために、絶縁層の最外層に用いる樹脂には、潤滑性成分を含有させてもよい。前記絶縁層の最外層における潤滑性成分の量は、含浸ワックスとの固着性を高める観点および前記絶縁層の最外層のコストを低減させる観点から、前記最外層を構成する樹脂１００質量部あたり、好ましくは１質量部以下、より好ましくは０．８質量部以下であり、絶縁層の最外層に潤滑性を付与する観点から、前記最外層を構成する樹脂１００質量部あたり、好ましくは０．１質量部以上、より好ましくは０．３質量部以上である。潤滑性成分としては、例えば、パラフィン類、ワックスなどが挙げられるが、本発明は、かかる例示のみに限定されるものではない。潤滑性成分の中では、絶縁電線の表面のすべり性の観点から、ワックスが好ましく、ポリエチレンワックスがより好ましい。 In order to improve the slipperiness of the insulated wire, the resin used for the outermost layer of the insulating layer may contain a lubricating component. The amount of the lubricating component in the outermost layer of the insulating layer is from the viewpoint of increasing the adhesion to the impregnated wax and reducing the cost of the outermost layer of the insulating layer, per 100 parts by mass of the resin constituting the outermost layer, Preferably, it is 1 part by mass or less, more preferably 0.8 part by mass or less, and from the viewpoint of imparting lubricity to the outermost layer of the insulating layer, it is preferably 0.1 per 100 parts by mass of the resin constituting the outermost layer. It is at least 0.3 parts by mass, more preferably at least 0.3 parts by mass. Examples of the lubricating component include paraffins and waxes, but the present invention is not limited to such examples. Among the lubricating components, wax is preferable and polyethylene wax is more preferable from the viewpoint of slipperiness of the surface of the insulated wire.
本発明では、分子中にエステル基を有し、常温で液体の脂肪酸エステルを含有する潤滑剤を用いることにより、潤滑性樹脂層に添加する潤滑性成分の量を低減させてもすべり性を維持することができ、その結果、ワニスとの固着力とすべり性とを両立させることができる絶縁電線を得ることができる。 In the present invention, by using a lubricant having an ester group in the molecule and containing a fatty acid ester that is liquid at room temperature, the slipperiness is maintained even when the amount of the lubricating component added to the lubricating resin layer is reduced. As a result, it is possible to obtain an insulated wire that can achieve both the adhesion to the varnish and the slip property.
前記絶縁層の最外層は、自己融着層であってもよい。自己融着層を有する絶縁電線は、コイル巻き加工後に加熱したとき、自己融着層が軟化して融着皮膜間の融着により絶縁電線同士を固着させることができる。このような絶縁電線に、分子中にエステル基を有する常温で液体の脂肪酸エステルを使用することにより、自己融着層の固着力を維持しつつ表面のすべり性を向上させることができる。自己融着層に用いられる好適な樹脂としては、例えば、熱硬化性ポリアミド、エポキシ樹脂、フェノキシ樹脂、不飽和ポリエステルなどの熱硬化性樹脂または熱可塑性樹脂が挙げられる。 The outermost layer of the insulating layer may be a self-bonding layer. When an insulated wire having a self-bonding layer is heated after coil winding, the self-bonding layer is softened and the insulated wires can be fixed to each other by fusion between the fusion films. By using a fatty acid ester that has an ester group in the molecule and is liquid at room temperature for such an insulated wire, the surface slipperiness can be improved while maintaining the fixing force of the self-bonding layer. Suitable resins used for the self-bonding layer include, for example, thermosetting resins such as thermosetting polyamides, epoxy resins, phenoxy resins, and unsaturated polyesters, or thermoplastic resins.
絶縁電線を製造する際、絶縁層を形成する樹脂は、通常、樹脂ワニスとして用いられる。絶縁電線は、例えば、導体の表面に樹脂ワニスを数回繰り返して塗布し、熱風循環炉などを用いて焼付けることにより、製造することができる。 When manufacturing an insulated wire, resin which forms an insulating layer is normally used as a resin varnish. An insulated wire can be manufactured by, for example, repeatedly applying a resin varnish to the surface of a conductor several times and baking it using a hot air circulating furnace or the like.
潤滑剤を塗布する前の絶縁電線の静摩擦係数が０．１２以上、動摩擦係数が．１１以上であっても、潤滑剤を塗布することにより、静摩擦係数および動摩擦係数を０．１０以下とすることができる。 The static friction coefficient of the insulated wire before applying the lubricant is 0.12 or more, and the dynamic friction coefficient is. Even if it is 11 or more, the static friction coefficient and the dynamic friction coefficient can be reduced to 0.10 or less by applying a lubricant.
前記潤滑剤を塗布する前の絶縁電線の静摩擦係数および動摩擦係数は、最外層に含まれる潤滑性成分の量を変更することにより、適宜調整することができる。 The static friction coefficient and the dynamic friction coefficient of the insulated wire before applying the lubricant can be appropriately adjusted by changing the amount of the lubricating component contained in the outermost layer.
絶縁電線の表面には、潤滑剤が塗布される。前記潤滑剤は、分子中にエステル基を有し、常温で液体の脂肪酸エステルを含有することが、その表面のすべり性観点およびワニスとの固着性を向上させる観点から好ましい。 A lubricant is applied to the surface of the insulated wire. The lubricant preferably has an ester group in the molecule and contains a fatty acid ester which is liquid at room temperature, from the viewpoint of improving the slipperiness of the surface and the adhesion to the varnish.
なお、本明細書において、潤滑剤が前記脂肪酸エステルを含有することには、前記潤滑剤が前記脂肪酸エステルのみで構成されていることのほか、前記脂肪酸エステル以外にも、本発明の目的が阻害されない範囲内で他の潤滑剤が含まれていてもよいことが包含される。 In the present specification, the fact that the lubricant contains the fatty acid ester is that the lubricant is composed of only the fatty acid ester, and the object of the present invention is not limited to the fatty acid ester. It is included that other lubricants may be included within the range not to be performed.
前記脂肪酸エステルのなかでは、表面のすべり性および絶縁電線とワニスとの固着性を向上させる観点から、分子中にエステル基を３個有する脂肪酸トリエステルが好ましく、式（Ｉ）：
Ｒ1−Ｃ（ＣＨ2ＯＯＣ−Ｒ2）3 （Ｉ）
（式中、Ｒ1は炭素数１〜４のアルキル基、Ｒ2は炭素数８〜１２のアルキル基を示す）
で表される脂肪酸トリエステルがより好ましい。
Among the fatty acid esters, fatty acid triesters having three ester groups in the molecule are preferable from the viewpoint of improving the slipperiness of the surface and the adhesion between the insulated wire and the varnish, and the formula (I):
R 1 —C (CH 2 OOC—R 2 ) 3 (I)
(Wherein R 1 represents an alkyl group having 1 to 4 carbon atoms, and R 2 represents an alkyl group having 8 to 12 carbon atoms)
The fatty acid triester represented by these is more preferable.
式（Ｉ）において、Ｒ1は、炭素数１〜４のアルキル基を示す。炭素数１〜４のアルキル基の具体例としては、メチル基、エチル基、ｎ−プロピル基、ｉ−プロピル基、ｎ−ブチル基、ｉ−ブチル基およびｔｅｒｔ−ブチル基が挙げられる。これらのなかでは、潤滑性絶縁電線の表面のすべり性および潤滑性絶縁電線とワニスとの固着性を向上させる観点から、メチル基およびエチル基が好ましく、エチル基がより好ましい。 In the formula (I), R 1 represents an alkyl group having 1 to 4 carbon atoms. Specific examples of the alkyl group having 1 to 4 carbon atoms include methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group and tert-butyl group. Among these, a methyl group and an ethyl group are preferable, and an ethyl group is more preferable from the viewpoint of improving the slipperiness of the surface of the lubricated insulated wire and the adhesion between the lubricated insulated wire and the varnish.
式（Ｉ）において、Ｒ2は、炭素数８〜１２のアルキル基を示す。炭素数８〜１２のアルキル基のなかでは、潤滑性絶縁電線の表面のすべり性および潤滑性絶縁電線とワニスとの固着性を向上させる観点から、炭素数９〜１１のアルキル基が好ましく、ノニル基がより好ましい。 In the formula (I), R 2 represents an alkyl group having 8 to 12 carbon atoms. Among the alkyl groups having 8 to 12 carbon atoms, an alkyl group having 9 to 11 carbon atoms is preferable from the viewpoint of improving the slipperiness of the surface of the lubricated insulated wire and the adhesion between the lubricated insulated wire and the varnish. Groups are more preferred.
なお、前記潤滑剤には、必要により、本発明の目的が阻害されない範囲内で、例えば、流動パラフィン、スピンドル油、ベロサイト、冷凍機油、マシン油などの他の潤滑剤をはじめ、界面活性剤、凝集防止剤、消泡剤、レべリング剤、沈降防止剤、湿潤剤、分散剤などが含まれていてもよい。 The lubricant may include other lubricants such as liquid paraffin, spindle oil, velocite, refrigerating machine oil, machine oil, and the like, as necessary, as long as the object of the present invention is not hindered. , Anti-aggregation agents, antifoaming agents, leveling agents, anti-settling agents, wetting agents, dispersing agents and the like may be included.
絶縁電線の表面に潤滑剤を塗布する方法としては、例えば、潤滑剤を入れた槽にロールの一部を含浸させ、該ロールを回転させながら該ロールの潤滑剤に含浸していない上面に絶縁電線を接触させて走行させる方法、潤滑剤中に絶縁電線を通過させた後、過剰の潤滑剤をフエルトで除去する方法、潤滑剤を含浸させたフエルト上に絶縁電線を通過させる方法などが挙げられるが、本発明は、かかる方法によって限定されるものではない。 As a method of applying the lubricant to the surface of the insulated wire, for example, a tank containing the lubricant is impregnated with a part of the roll, and the roll is rotated and insulated on the upper surface not impregnated with the lubricant of the roll. Examples include a method of running an electric wire in contact, a method of removing excess lubricant with felt after passing the insulated wire through the lubricant, and a method of passing the insulated wire over the felt impregnated with the lubricant. However, the present invention is not limited by such a method.
絶縁電線に潤滑剤を付着させる際の潤滑剤の温度は、特に限定がなく、通常、常温〜４０℃程度であればよい。また、絶縁電線における潤滑剤の付着量は、特に限定されず、通常、絶縁電線の表面に潤滑剤が均一に付着される量が選ばれる。 The temperature of the lubricant when attaching the lubricant to the insulated wire is not particularly limited, and may be usually from room temperature to about 40 ° C. Moreover, the adhesion amount of the lubricant in the insulated wire is not particularly limited, and usually the amount by which the lubricant is uniformly deposited on the surface of the insulated wire is selected.
前記潤滑剤が塗布された絶縁電線の静摩擦係数およびは、コイルをコア内に挿入する際の挿入作業性を高める観点から、０．１０以下であり、その動摩擦係数は、コイルをコア内に挿入する際の挿入作業性を高める観点から、０．１０以下である。 The static friction coefficient of the insulated wire coated with the lubricant is 0.10 or less from the viewpoint of enhancing the workability of insertion when the coil is inserted into the core, and the dynamic friction coefficient is inserted into the core. From the viewpoint of improving the insertion workability at the time of carrying out, it is 0.10 or less.
前記潤滑剤を塗布した後の絶縁電線の静摩擦係数および動摩擦係数は、潤滑剤の種類を変更することにより、適宜調整することができる。 The static friction coefficient and the dynamic friction coefficient of the insulated wire after applying the lubricant can be appropriately adjusted by changing the type of the lubricant.
なお、本明細書において、静摩擦係数および動摩擦係数は、いずれも、以下の「実施例」に記載の測定方法に基づいて測定されたときの値を示す。 In the present specification, both the static friction coefficient and the dynamic friction coefficient indicate values when measured based on the measurement method described in the following “Examples”.
こうして絶縁電線の表面上に潤滑剤を塗布することにより、本発明の潤滑性絶縁電線が得られる。 Thus, the lubrication insulated wire of the present invention is obtained by applying a lubricant on the surface of an insulated wire.
本発明の潤滑性絶縁電線は、例えば、本発明の潤滑性絶縁電線を巻線したコイルを分布巻モータのステータスロットのコア内に挿入する際、コイルとコアとの動摩擦係数が小さいので、低い挿入圧力でコイルをコア内に円滑に挿入することができることから、挿入の作業性が高められるとともに、コイルをコア内に挿入する際の摺擦による損傷を受けがたいという利点を有する。 The lubricating insulated wire of the present invention is low because, for example, the coefficient of dynamic friction between the coil and the core is small when the coil wound with the lubricating insulated wire of the present invention is inserted into the core of the status lot of the distributed winding motor. Since the coil can be smoothly inserted into the core with the insertion pressure, the workability of the insertion is improved, and there is an advantage that the coil is not easily damaged by sliding when the coil is inserted into the core.
さらに、本発明の潤滑性絶縁電線は、例えば、分布巻モータなどに用いられるワニスとの固着性にも優れているので、コイルを分布巻モータのステータスロットのコア内に挿入した後、ワニスの含浸処理が施される分布巻モータに好適に使用することができる。 Furthermore, since the lubricated insulated wire of the present invention is also excellent in adhesion to a varnish used for, for example, a distributed winding motor, the coil is inserted into the core of the status lot of the distributed winding motor, It can be suitably used for a distributed winding motor that is impregnated.
分布巻モータの製造時の含浸処理の際に用いられるワニスとしては、例えば、ポリスチレン系樹脂、エポキシ樹脂、フェノキシ樹脂などが挙げられるが、本発明は、かかる例示のみに限定されるものではない。また、ワニスの含浸処理の方法には、特に限定がなく、通常行なわれている方法を採用することができる。 Examples of the varnish used in the impregnation treatment at the time of manufacturing the distributed winding motor include polystyrene resins, epoxy resins, phenoxy resins, and the like, but the present invention is not limited to such examples. Further, the method for impregnating the varnish is not particularly limited, and a usual method can be employed.
本発明のモータは、前記潤滑性絶縁電線を巻線したコイルを有する。したがって、本発明のモータは、その製造時において、コイルをステータスロットのコア内に挿入する際の摺擦によって絶縁電線の絶縁層が損傷を受けがたいことから、絶縁性能の信頼性に優れており、さらに絶縁電線とワニスとの固着性にも優れているので、例えば、エアコンディショナー、冷蔵庫などに用いられるコンプレッサ用モータなどに好適に使用することができる。 The motor of this invention has the coil which wound the said lubricous insulated wire. Therefore, the motor of the present invention is excellent in the reliability of the insulation performance because the insulation layer of the insulated wire is not easily damaged by the sliding when the coil is inserted into the core of the status lot at the time of manufacture. Furthermore, since the insulation between the insulated wire and the varnish is excellent, it can be suitably used for a compressor motor used in, for example, an air conditioner or a refrigerator.
次に、本発明を実施例に基づいてさらに詳細に説明するが、本発明は、かかる実施例のみに限定されるものではない。 Next, the present invention will be described in more detail based on examples. However, the present invention is not limited to such examples.
調製例１
温度計、冷却管、塩化カルシウム充填管、攪拌器および窒素吹き込み管が取り付けられた１Ｌ容のフラスコ内に、窒素吹き込み管から毎分１５０ｍＬの窒素ガスを流しながら、無水トリメリット酸１７６．９ｇ、トリメリット酸１．９５ｇおよびメチレンジイソシアネート〔三井武田ケミカル（株）製、商品名：コスモネートＰＨ〕２３３．２ｇを投入した。
Preparation Example 1
In a 1 L flask equipped with a thermometer, a cooling tube, a calcium chloride-filled tube, a stirrer, and a nitrogen blowing tube, while flowing 150 mL of nitrogen gas from the nitrogen blowing tube per minute, 176.9 g of trimellitic anhydride, 1.95 g of trimellitic acid and 233.2 g of methylene diisocyanate (manufactured by Mitsui Takeda Chemical Co., Ltd., trade name: Cosmonate PH) were added.
次に、このフラスコ内に、溶媒としてＮ−メチル−２−ピロリドン５３６ｇを添加し、攪拌器で攪拌しながら８０℃で３時間加熱した後、約４時間かけて系内の温度を１２０℃まで昇温し、同温度で３時間加熱した。その後、加熱を止め、フラスコ内にキシレン１３４ｇを添加して内容液を希釈した後、放冷し、不揮発分含量が３５質量％であるポリアミドイミド樹脂ワニス（以下、汎用ＰＡＩという）を得た。 Next, 536 g of N-methyl-2-pyrrolidone was added to the flask as a solvent, heated for 3 hours at 80 ° C. while stirring with a stirrer, and then the temperature in the system was increased to 120 ° C. over about 4 hours. The temperature was raised and heated at the same temperature for 3 hours. Thereafter, the heating was stopped, 134 g of xylene was added to the flask to dilute the content liquid, and then the mixture was allowed to cool to obtain a polyamideimide resin varnish (hereinafter referred to as general-purpose PAI) having a nonvolatile content of 35% by mass.
調製例２
調製例１で得られた汎用ＰＡＩの固形分量１００質量部に対してポリエチレンワックス１．５質量部の割合で、汎用ＰＡＩとポリエチレンワックスとを混合することにより、ポリアミドイミド樹脂ワニス（以下、高潤滑ＰＡＩという）を得た。
Preparation Example 2
Polyamideimide resin varnish (hereinafter referred to as “high lubrication”) was prepared by mixing general-purpose PAI and polyethylene wax at a ratio of 1.5 parts by mass of polyethylene wax to 100 parts by mass of the solid content of general-purpose PAI obtained in Preparation Example 1. PAI).
製造例１（絶縁電線Ａの製造）
炉温度が５００℃の熱風循環炉を用い、直径１．０ｍｍの銅線上に高潤滑ＰＡＩを数回繰り返して塗布し、焼付けることにより、絶縁層の厚さが約３０μｍである絶縁電線（ＪＩＳ Ｃ ４００３に規定のＨ種絶縁）を製造した。以下、この製造された絶縁電線を絶縁電線Ａという。製造された絶縁電線Ａの静摩擦係数および動摩擦係数を以下の方法に基づいて測定したところ、静摩擦係数は０．０６５であり、動摩擦係数は０．０６３であった。
Production Example 1 (Production of insulated wire A)
Using a hot air circulating furnace with a furnace temperature of 500 ° C., a highly lubricated PAI is repeatedly applied to a copper wire with a diameter of 1.0 mm several times and baked, whereby an insulated wire having an insulating layer thickness of about 30 μm (JIS) C class 4003). Hereinafter, the manufactured insulated wire is referred to as insulated wire A. When the static friction coefficient and the dynamic friction coefficient of the manufactured insulated wire A were measured based on the following methods, the static friction coefficient was 0.065 and the dynamic friction coefficient was 0.063.
〔静摩擦係数および動摩擦係数（オートグラフ法）の測定方法〕
静摩擦係数および動摩擦係数を潤滑性絶縁電線のすべり性の指標とした。潤滑性絶縁電線４本をそれぞれ１％伸長させ、各潤滑性絶縁電線同士を井桁状に直角に交差させ、その中央部分に質量２００ｇの錘を載せて、引張り試験機のオートグラフで引張り強度を３回測定してその平均値を求め、これを動擦係数とした。また、静摩擦係数は、動摩擦係数の測定時の立ち上がりの摩擦係数を測定し、これを静摩擦係数とした。
[Measuring method of static friction coefficient and dynamic friction coefficient (autograph method)]
The coefficient of static friction and the coefficient of dynamic friction were used as indicators of the slipperiness of the lubricated insulated wire. Extend each of the four lubricated insulated wires by 1%, cross each lubricated insulated wire at right angles in a cross-beam shape, place a weight of 200g on the center, and determine the tensile strength with an autograph of a tensile tester. The average value was obtained by measuring three times, and this was used as the coefficient of friction. The static friction coefficient was determined by measuring the rising friction coefficient at the time of measuring the dynamic friction coefficient, and setting this as the static friction coefficient.
製造例２（絶縁電線Ｂの製造）
製造例１において、高潤滑ＰＡＩの代わりに、高潤滑ＰＡＩと汎用ＰＡＩとを７０：３０の質量比で混合した混合ＰＡＩ（１）を用いたこと以外は、製造例１と同様にして絶縁電線を製造した。以下、この製造された絶縁電線を絶縁電線Ｂという。製造された絶縁電線Ｂの静摩擦係数および動摩擦係数を製造例１と同様にして測定したところ、静摩擦係数は０．１２０であり、動摩擦係数は０．１１０であった。
Production Example 2 (Manufacture of insulated wire B)
In the production example 1, instead of the high-lubrication PAI, an insulated wire was used in the same manner as in the production example 1 except that the mixed PAI (1) in which the high-lubrication PAI and the general-purpose PAI were mixed at a mass ratio of 70:30 was used. Manufactured. Hereinafter, the manufactured insulated wire is referred to as insulated wire B. When the static friction coefficient and the dynamic friction coefficient of the manufactured insulated wire B were measured in the same manner as in Production Example 1, the static friction coefficient was 0.120, and the dynamic friction coefficient was 0.110.
製造例３（絶縁電線Ｃの製造）
製造例１において、高潤滑ＰＡＩの代わりに、高潤滑ＰＡＩと汎用ＰＡＩとを５０：５０の質量比で混合した混合ＰＡＩ（２）を用いたこと以外は、製造例１と同様にして絶縁電線を製造した。以下、この製造された絶縁電線を絶縁電線Ｃという。製造された絶縁電線Ｃの静摩擦係数および動摩擦係数を製造例１と同様にして測定したところ、静摩擦係数は０．１５０であり、動摩擦係数は０．１４０であった。
Production Example 3 (Manufacture of insulated wire C)
In the production example 1, instead of the high-lubrication PAI, an insulated wire was used in the same manner as in the production example 1 except that the mixed PAI (2) in which the high-lubrication PAI and the general-purpose PAI were mixed at a mass ratio of 50:50 was used. Manufactured. Hereinafter, the manufactured insulated wire is referred to as insulated wire C. When the static friction coefficient and the dynamic friction coefficient of the manufactured insulated wire C were measured in the same manner as in Production Example 1, the static friction coefficient was 0.150 and the dynamic friction coefficient was 0.140.
製造例４（絶縁電線Ｄの製造）
製造例１において、高潤滑ＰＡＩの代わりに、汎用ＰＡＩを用いたこと以外は、製造例１と同様にして絶縁電線を製造した。以下、この製造された絶縁電線を絶縁電線Ｄという。製造された絶縁電線Ｄの静摩擦係数および動摩擦係数を製造例１と同様にして測定したところ、静摩擦係数は０．２８５であり、動摩擦係数は０．１８８であった。
Production Example 4 (Production of insulated wire D)
In Production Example 1, an insulated wire was produced in the same manner as in Production Example 1 except that general-purpose PAI was used instead of highly lubricated PAI. Hereinafter, the manufactured insulated wire is referred to as insulated wire D. When the static friction coefficient and the dynamic friction coefficient of the manufactured insulated wire D were measured in the same manner as in Production Example 1, the static friction coefficient was 0.285 and the dynamic friction coefficient was 0.188.
実施例１
脂肪酸トリエステル〔式（Ｉ）において、Ｒ1がエチル基、Ｒ2がノニル基のもの〕を入れた槽（液温：２５℃）内にフエルトの表面を有するロールの下部を含浸させ、該ロールを回転させながら脂肪酸トリエステルに含浸していないロールの上面に絶縁電線を接触させて走行させることにより、製造例１〜４で得られた絶縁電線Ａ〜Ｄの各表面に脂肪酸トリエステルを均一に塗布し、潤滑性絶縁電線を製造した。
Example 1
Impregnating a lower part of a roll having a felt surface into a tank (liquid temperature: 25 ° C.) containing a fatty acid triester (in formula (I), wherein R 1 is an ethyl group and R 2 is a nonyl group); While rotating the roll, the insulated wire is brought into contact with the upper surface of the roll not impregnated with the fatty acid triester, and the fatty acid triester is applied to each surface of the insulated wires A to D obtained in Production Examples 1 to 4. It was applied evenly to produce a lubricated insulated wire.
比較例１
実施例１において、脂肪酸トリエステルの代わりに、流動パラフィン〔日本サン石油（株）製、商品名：スニソ４ＧＳ〕を用いたこと以外は、実施例１と同様にして潤滑性絶縁電線を製造した。
Comparative Example 1
In Example 1, a lubricated insulated wire was produced in the same manner as in Example 1 except that liquid paraffin [manufactured by Nippon San Oil Co., Ltd., trade name: Suniso 4GS] was used instead of the fatty acid triester. .
比較例２
実施例１において、脂肪酸トリエステルを用いなかったこと以外は、実施例１と同様にして潤滑性絶縁電線を製造した。
Comparative Example 2
In Example 1, a lubricating insulated wire was produced in the same manner as in Example 1 except that the fatty acid triester was not used.
実験例１（潤滑性絶縁電線の静摩擦係数および動摩擦係数）
実施例１および比較例１〜２で得られた潤滑性絶縁電線の静摩擦係数および動摩擦係数を製造例１と同様にして調べた。潤滑性絶縁電線の静摩擦係数および動摩擦係数の測定結果を表１に示す。
なお、各表中のＡ〜Ｄは、それぞれ順に、潤滑性絶縁電線Ａ〜Ｄを示す。
Experimental example 1 (Static friction coefficient and dynamic friction coefficient of lubricated insulated wire)
The static friction coefficient and the dynamic friction coefficient of the lubricating insulated wires obtained in Example 1 and Comparative Examples 1 and 2 were examined in the same manner as in Production Example 1. Table 1 shows the measurement results of the static friction coefficient and the dynamic friction coefficient of the lubricated insulated wire.
In addition, AD in each table | surface shows the lubricated insulated wire AD in order, respectively.
ポリエチレンワックスの量は、絶縁層を構成する樹脂１００質量部あたりの量である。
The amount of polyethylene wax is an amount per 100 parts by mass of the resin constituting the insulating layer.
表１に示された結果から、実施例１で得られた潤滑性絶縁電線は、従来の流動パラフィンが用いられた潤滑性絶縁電線（比較例１）および脂肪酸トリエステルおよび流動パラフィンが用いられていない潤滑性絶縁電線（比較例２）と対比して、ポリエチレンワックスの量を低減させても静摩擦係数および動摩擦係数が非常に小さく、表面のすべり性に優れていることがわかる。 From the results shown in Table 1, the lubricating insulated wire obtained in Example 1 uses a conventional lubricating insulated wire (Comparative Example 1) using liquid paraffin, fatty acid triester and liquid paraffin. In contrast to the non-lubricated insulated wire (Comparative Example 2), it can be seen that even when the amount of polyethylene wax is reduced, the static friction coefficient and the dynamic friction coefficient are very small, and the surface slipperiness is excellent.
したがって、実施例１で得られた潤滑性絶縁電線は、ポリエチレンワックスの使用量が少なくても、従来の流動パラフィンが用いられた潤滑性絶縁電線（比較例１）や脂肪酸トリエステルおよび流動パラフィンが用いられていない潤滑性絶縁電線（比較例２）と対比して、潤滑性絶縁電線を巻線したコイルをモータのステータスロットのコア内に挿入する際の挿入圧力を低くするので、モータの製造時の作業性を向上させるとともに、コイルをコア内に挿入する際の摺擦によって絶縁電線の絶縁層が損傷を受けがたくするものであることがわかる。 Therefore, the lubricating insulated wire obtained in Example 1 is made up of a lubricating insulated wire using conventional liquid paraffin (Comparative Example 1), fatty acid triester and liquid paraffin, even if the amount of polyethylene wax used is small. Manufacture of the motor because the insertion pressure when inserting the coil wound with the lubricated insulated wire into the core of the motor status lot is made lower than the lubricated insulated wire not used (Comparative Example 2) It can be seen that the workability at the time is improved, and the insulating layer of the insulated wire is not easily damaged by the sliding when the coil is inserted into the core.
実験例２（コイルの挿入時の荷重）
実施例１および比較例１で得られた各潤滑性絶縁電線を巻線したコイルを作製し、所定形状を有するモータのステータスロットのコア内に挿入する際に要する荷重を３回測定し、その平均値を求めた。なお、コイルを挿入する際の占積率を７２％とした。その結果を表２に示す。
Experimental Example 2 (Load when inserting a coil)
A coil in which each lubricated insulated wire obtained in Example 1 and Comparative Example 1 was wound was produced, and the load required to be inserted into the core of the status lot of the motor having a predetermined shape was measured three times. The average value was obtained. In addition, the space factor at the time of inserting a coil was 72%. The results are shown in Table 2.
表２に示された結果から、実施例１で得られた潤滑性絶縁電線は、潤滑剤を塗布する前の絶縁電線の静摩擦係数が０．１２以上で、その動摩擦係数が０．１１以上であるとともに、潤滑剤が塗布された絶縁電線の静摩擦係数が０．１０以下で、その動摩擦係数が０．１０以下であることから、従来の流動パラフィンが用いられた潤滑性絶縁電線（比較例１）と対比して、ポリエチレンワックスの使用量が少なくてもコイル挿入時の荷重が非常に小さいことがわかる。 From the results shown in Table 2, the lubricating insulated wire obtained in Example 1 has a static friction coefficient of 0.12 or more and a dynamic friction coefficient of 0.11 or more before applying the lubricant. In addition, since the static friction coefficient of the insulated wire coated with the lubricant is 0.10 or less and the dynamic friction coefficient is 0.10 or less, the conventional insulated insulated wire using liquid paraffin (Comparative Example 1) In contrast, the load when inserting the coil is very small even if the amount of polyethylene wax used is small.
したがって、実施例１で得られた潤滑性絶縁電線は、従来の流動パラフィンが用いられている潤滑性絶縁電線（比較例１）と対比して、コイルをステータスロットのコア内に挿入する際の挿入圧力を低減させることができるので、その作業性を向上させるとともに、コイルをコア内に挿入する際の摺擦によって絶縁電線の絶縁層が損傷を受けがたくするものであることがわかる。 Therefore, the lubricated insulated wire obtained in Example 1 is different from the conventional lubricated insulated wire (Comparative Example 1) in which liquid paraffin is used when the coil is inserted into the core of the status lot. Since the insertion pressure can be reduced, it is understood that the workability is improved and the insulating layer of the insulated wire is not easily damaged by the rubbing when the coil is inserted into the core.
実験例３（ワニスの固着力）
実施例１および比較例１で得られた各潤滑性絶縁電線(長さ：８ｃｍ)をそれぞれ３０本束ねて試料を作製した。得られた試料を室温のフェノール樹脂系ワニス〔アルタナ（ＡＬＴＡＮＡ）社製、品番：ＰＥＤ９２３−５０、固形分濃度：５０質量％〕にキシレンとブチルセロソルブアセテートの混合溶媒〔キシレン／ブチルセロソルブアセテート（質量比）：３／１〕を添加し、固形分濃度を１２．５質量％としたもののなかに約５分間浸漬した後、取り出し、１６０℃の雰囲気中で２時間加熱することにより、この試料に熱処理を施し、室温まで冷却した。
Experimental Example 3 (Finishing strength of varnish)
A sample was prepared by bundling 30 of each of the lubricating insulated wires (length: 8 cm) obtained in Example 1 and Comparative Example 1. The obtained sample was mixed with a mixed resin of xylene and butyl cellosolve acetate (xylene / butyl cellosolve acetate (mass ratio)) into a phenolic resin varnish (product number: PED923-50, solid content concentration: 50% by mass) manufactured at room temperature. : 3/1] was added, and the solid content was adjusted to 12.5% by mass. After being immersed for about 5 minutes, the sample was taken out and heated in an atmosphere at 160 ° C. for 2 hours to heat-treat the sample. And cooled to room temperature.
次に、この試料を引張り試験機に水平にセットし、折り曲げるときの最大荷重を測定し、その平均値を求めた。その結果を表３に示す。 Next, this sample was set horizontally on a tensile tester, the maximum load when bending was measured, and the average value was obtained. The results are shown in Table 3.
表３に示された結果から、実施例１で得られた潤滑性絶縁電線は、潤滑剤を塗布する前の絶縁電線の静摩擦係数が０．１２以上で、その動摩擦係数が０．１１以上であるとともに、潤滑剤が塗布された絶縁電線の静摩擦係数が０．１０以下で、その動摩擦係数が０．１０以下であることから、従来のワニスの固着力が大きい流動パラフィンが用いられた潤滑性絶縁電線（比較例１）と対比して、遜色のないワニスの固着力を有することがわかる。 From the results shown in Table 3, the lubricating insulated wire obtained in Example 1 has a coefficient of static friction of 0.12 or more and a coefficient of dynamic friction of 0.11 or more before applying the lubricant. In addition, since the static friction coefficient of the insulated wire coated with the lubricant is 0.10 or less and the dynamic friction coefficient is 0.10 or less, the lubricity using the liquid paraffin having a high varnish fixing force is used. Compared with the insulated wire (Comparative Example 1), it can be seen that it has an inferior varnish fixing force.
したがって、実施例１で得られた潤滑性絶縁電線によれば、潤滑性絶縁電線からなるコイルをコア内に挿入した後、絶縁電線に固着力が大きいワニス層を形成させることができるため、モータの信頼性が高められることがわかる。 Therefore, according to the lubricated insulated wire obtained in Example 1, the varnish layer having a high adhering force can be formed on the insulated wire after inserting the coil made of the lubricated insulated wire into the core. It can be seen that the reliability of is improved.
以上の結果から、本発明の潤滑性絶縁電線は、ポリエチレンワックスの使用量が少なくても表面のすべり性に優れるとともに、ワニスとの固着性にも優れていることがわかる。したがって、本発明のモータは、前記潤滑性絶縁電線を巻線したコイルを有するので、その製造時にコイルをステータスロットのコア内に挿入する際の摺擦によって絶縁電線の絶縁層が損傷を受けがたいことから絶縁性能の信頼性が高められており、さらに絶縁電線とワニスとの固着性にも優れている。 From the above results, it can be seen that the lubricating insulated wire of the present invention has excellent surface slipperiness and excellent adhesion to varnish even if the amount of polyethylene wax used is small. Therefore, since the motor of the present invention has a coil wound with the above-mentioned lubricated insulated wire, the insulating layer of the insulated wire is damaged by rubbing when the coil is inserted into the core of the status lot during manufacture. Therefore, the reliability of the insulation performance is improved, and the adhesiveness between the insulated wire and the varnish is excellent.
以上開示された実施の形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した意味ではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることを意図される。 The embodiments disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
Claims (8)
前記絶縁層の最外層が、ポリアミドイミド、ポリエステルイミド、ポリイミド、ポリアミド、ポリエステルおよびポリウレタンからなる群より選ばれた少なくとも１種の樹脂を含有し、
前記潤滑剤が塗布された絶縁電線の静摩擦係数が０．１０以下で、その動摩擦係数が０．１０以下であり、
前記潤滑剤を塗布する前の絶縁電線の静摩擦係数が０．１２以上で、その動摩擦係数が０．１１以上である
ことを特徴とする潤滑性絶縁電線。 A lubricated insulated wire formed by applying a lubricant to an insulated wire comprising a conductor and an insulating layer covering the conductor,
The outermost layer of the insulating layer contains at least one resin selected from the group consisting of polyamideimide, polyesterimide, polyimide, polyamide, polyester and polyurethane,
The static friction coefficient of the insulated wire coated with the lubricant is 0.10 or less, and the dynamic friction coefficient is 0.10 or less,
A lubricated insulated electric wire having a static friction coefficient of 0.12 or more and a dynamic friction coefficient of 0.11 or more before application of the lubricant.
Ｒ1−Ｃ（ＣＨ2ＯＯＣ−Ｒ2）3 （Ｉ）
（式中、Ｒ1は炭素数１〜４のアルキル基、Ｒ2は炭素数８〜１２のアルキル基を示す）
で表される脂肪酸トリエステルである請求項５に記載の潤滑性絶縁電線。 Said fatty acid ester is of formula (I):
R 1 —C (CH 2 OOC—R 2 ) 3 (I)
(Wherein R 1 represents an alkyl group having 1 to 4 carbon atoms, and R 2 represents an alkyl group having 8 to 12 carbon atoms)
The lubricating insulated wire according to claim 5, which is a fatty acid triester represented by:
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