JPS58212338A - Rotary electric machine - Google Patents

Abstract

PURPOSE:To improve cushionning property, heat resistance and fitness in a rotary electric machine by interposing a flexible sheet which is formed by immersing a porous sheet made of synthetic paper, organic fiber or the like with flexible resin and laminating and molding the sheets, at a coil end. CONSTITUTION:A porous sheet made of synthetic paper or organic fiber such as aromatic polyamide A board or the like is dipped in and immersed with flexible resin such as silicone varnish. Suitable number of such sheets are laminated, hot molded in a press or the like, thereby forming a flexible plate 5. Three plates 5 are laminated as intermediate lay 5a between upper and lower coil ends 3a, 3b, two plates 5 are laminated and inserted as underlay 5b to a pressing plate 4 of a coil retainer. Semicured resin-immersed glass bound tape is wound as a binding member 2 and tightened. In this manner, cushion property is improved, and the heat resistance and fitness of the coil are improved.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明はコイルエンド部の絶縁の損傷を防止した回転電
機に関する。゛ 〔発明の技術的背景〕 直流機の回転子の一部を形成する電機子コイルエンド部
には、電磁力、捩り、遠心力などが作用するため、コイ
ルエンドの変形防止および、コイル受は部材であるコイ
ル押え板の下敷絶縁などの目的で、フレキシブル板を挿
入し、コイル外側から半硬化樹脂含浸ガラステープある
いは、非磁鋼線などのバインド部材を巻付けてコイルを
緊縛している。このフレキシブル板は可撓性が大きく、
コイルの凹凸にもよく馴染むものでなければならない。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a rotating electric machine in which damage to the insulation of a coil end portion is prevented. [Technical Background of the Invention] Electromagnetic force, torsion, centrifugal force, etc. act on the armature coil end that forms part of the rotor of a DC machine. For the purpose of insulating the underlay of the coil holding plate, which is a member, a flexible plate is inserted, and a binding member such as semi-cured resin-impregnated glass tape or non-magnetic steel wire is wrapped from the outside of the coil to tightly bind the coil. This flexible board has great flexibility,
It must be able to adapt well to the irregularities of the coil.

また樹脂の真空加圧含浸などの後処理によって可撓性を
損なうものであってもならない。こうしたフレキシブル
板には、従来、フェノールワニスカラスクロス、フェノ
ールワニスアスベストクロスの積層板などが古くから使
われてきた。Further, the flexibility must not be impaired by post-treatment such as vacuum pressure impregnation with resin. Conventionally, phenol varnish glass cloth, phenol varnish asbestos cloth laminates, etc. have been used as such flexible boards for a long time.

〔背景技術の問題点〕[Problems with background technology]

しかしながら、ガラス繊維は耐熱性に優れているが、繊
維が折れ易いため、コイルが熱膨張、収縮を繰返すこと
によって摩耗し、鋭い細片状に粉砕され、コイル絶縁層
の摩耗に促進作用を起こす。However, although glass fiber has excellent heat resistance, the fiber is easily broken, so the coil wears out due to repeated thermal expansion and contraction, and is crushed into sharp pieces, which accelerates the wear of the coil insulation layer. .

この現象がひどくなると、コイル絶縁層の薄肉化、緊縛
効果の低下を生じ、絶縁不良に至る問題点があった。又
、アスベスト繊維は個有の可撓性によって膨張、収縮の
変形も良好に吸収されるが、発ガン性物質としてその取
扱いが厳しく規制されており、作業者の健康管理の面か
ら材料の変更が急務で、アスベスト代替品の研究が盛ん
に行なわれている。When this phenomenon becomes severe, the coil insulating layer becomes thinner, the binding effect decreases, and there are problems that lead to poor insulation. Furthermore, due to the unique flexibility of asbestos fibers, it can absorb deformation due to expansion and contraction well, but its handling is strictly regulated as it is a carcinogen, and changes to the material are not recommended from the perspective of worker health management. There is an urgent need for this, and research into asbestos substitutes is being actively conducted.

〔発明の目的〕[Purpose of the invention]

本発明はクッション性に優れ、かつ耐熱性とコイルへの
フィツト性とが優れたフレキシブル板をクッションとし
た回転電機を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a rotating electric machine in which a flexible plate having excellent cushioning properties, heat resistance, and fit to a coil is used as a cushion.

〔発明の概要〕[Summary of the invention]

本発明においては、合成紙又は有機質繊維の材料等から
なる多孔質シートに可撓性樹脂を含浸し、これを積層モ
ールドして得られたフレキシブル板を、コイルエンド部
の上下コイル間又は下コイルとコイル受は部材間の少な
くとも一方に介在させることにより、クッション性を良
好にし、かつ耐熱性とコイルへのフィツト性を良好にし
、信頼性の高い回転電機とするものである。In the present invention, a flexible plate obtained by impregnating a flexible resin into a porous sheet made of synthetic paper or an organic fiber material, etc., and laminating and molding the same is placed between the upper and lower coils at the coil end portion or between the lower coils. By interposing the coil holder in at least one of the members, the rotating electric machine has good cushioning properties, good heat resistance and good fit to the coil, and has high reliability.

そのためには、耐熱性の良い有機質繊維材料等のシート
にエポキシエステル樹脂、シリコーン樹脂など可撓性の
よい樹脂を含浸し、積層、加熱モールドして得られるフ
レキシブル板を用い、全含浸などの後処理によって可撓
性を損なわせないようＫする。To do this, we use a flexible board obtained by impregnating a sheet of heat-resistant organic fiber material with a flexible resin such as epoxy ester resin or silicone resin, laminating it, and heat-molding it. K so that the flexibility is not impaired by the treatment.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の一実施例について、第１図を参照して説
明する。An embodiment of the present invention will be described below with reference to FIG.

多孔質シートとして用いる有機質繊維材料として、芳香
族ホＩＪアミドＡボード（日本アロマ社商品名）を用い
、これに、可撓性樹脂として、シリコーンワニスＫＲＩ
ＯＩ（信越化学社商品名）を浸漬含浸する。充分含浸し
たところを見計らって、適当枚数重ね、予じめ１５０℃
に保たれているプレスでホットモールドしてフレキシブ
ル板（５）を得る。Aromatic HoIJ Amide A board (trade name of Nippon Aroma Co., Ltd.) was used as the organic fiber material used as the porous sheet, and silicone varnish KRI was used as the flexible resin.
Dip and impregnate with OI (trade name, Shin-Etsu Chemical Co., Ltd.). Check the area that has been sufficiently impregnated, stack the appropriate number of sheets, and heat to 150℃ in advance.
A flexible plate (5) is obtained by hot molding in a press maintained at .

、、Ｉｌｌ。,,Ill.

第１図は直流機の電機子で、コイルエンド（３）を有す
るコイル（図示せず）を鉄心（１）の図示しないスロッ
トに納めたのち、上コイルエンド（３ａ）と下コイルエ
ンド（３ｂ）の中敷き（５ａ）としてフレキシブル板（
５）を３枚重ねて挿入し、コイル受は部材である押え板
（／ｌ）Ｋはフレキシブル板（５）を２枚重ねて下敷き
（５ｂ）として挿入した。コイルエンド（３）の外周か
らは、バインド部材（２）として半硬化樹脂含浸ガラス
バインドテーゾ（ＪＩ８Ｃ２４１２）を巻付けて緊縛し
た。この電機子は、このあと、真空加圧含浸タンク内に
入れて樹脂を全含浸処理した。Figure 1 shows the armature of a DC machine, in which a coil (not shown) having a coil end (3) is placed into a slot (not shown) of an iron core (1), and then the upper coil end (3a) and lower coil end (3b ) as an insole (5a) with a flexible board (
5) were inserted in a stack, and the coil holder was a member of the holding plate (/l) K, which was a flexible plate (5) stacked with two sheets and inserted as an underlay (5b). From the outer periphery of the coil end (3), a semi-cured resin-impregnated glass binder Teso (JI8C2412) was wrapped and bound as a binding member (2). This armature was then placed in a vacuum pressure impregnation tank and completely impregnated with resin.

次に作用について説明する。Next, the effect will be explained.

上記実施例に用いるフレキシブル板（５）と、従来用い
たガラスクロスにシリコーンワニスＫＲＩ　Ｏ１を浸漬
含浸してホットモールドしたフレキシブル板（図示せず
）で、性能比較として耐摩耗特性を第２図に示した。測
定方法は両フレキシブル板を６　ｍｍ厚さになるように
適当枚数積み重ね、定盤に固定する。次に絶縁されてい
る電機子コイルを模擬したパーコイルをフレキシブル板
の上に乗せ、バーコイルＫ　５１ｃｇ　／ｍｙｘ”の荷
重を印加しながら、ストローク２ｍｍ、６００ＣＰＭで
繰返し摺動させ、コイル絶縁層とフレキシブル板の摩耗
量を、繰返し数ｎ対して調べた。本実施例のものは曲線
Ａで示され、従来のものは曲線Ｂで示された。即ち本実
施例のものは耐摩耗量において、従来のものより格段に
優れていることが認められる。As a performance comparison, the wear resistance properties of the flexible plate (5) used in the above example and a flexible plate (not shown) made by dipping and impregnating conventional glass cloth with silicone varnish KRI O1 and hot molding are shown in Figure 2. Indicated. The measurement method is to stack an appropriate number of both flexible plates to a thickness of 6 mm and fix them on a surface plate. Next, a bar coil simulating an insulated armature coil was placed on a flexible plate, and while applying a load of 51 cg/myx, the bar coil was repeatedly slid at a stroke of 2 mm and 600 CPM to separate the coil insulating layer and the flexible plate. The wear amount was investigated with respect to the number of repetitions n.The product of this example is shown by curve A, and the conventional product is shown by curve B.In other words, the product of this example is superior to the conventional product in terms of wear resistance. It is recognized that it is far superior to the others.

尚、本発明は上記し、かつ図面に示した実施例のみに限
定されるものではなく、例えば多孔質シートの材料には
合成紙などを用いてもよい等、その要旨を変更しない範
囲で、種々変形して実施できることは勿論である。The present invention is not limited to the embodiments described above and shown in the drawings; for example, synthetic paper or the like may be used as the material of the porous sheet, etc., without changing the gist thereof. Of course, it can be implemented with various modifications.

〔発明の効果〕 以上説明したように、本発明によれば、合成紙又は有機
質繊維の材料等からなる多孔質シートに可撓性樹脂を含
浸し、これを積層モールドして得られたフレキシブル板
を、コイルエンド部の上下コイル間又は下コイルとコイ
ル受は部材間の少なくとも一方に介在させることにより
、クッション性を良好にし、かつ耐熱性とコイルへのフ
ィツト性を良好にし、信頼性の高い回転電機が得られる
。[Effects of the Invention] As explained above, according to the present invention, a flexible board obtained by impregnating a flexible resin into a porous sheet made of synthetic paper or organic fiber material, and laminating and molding the same. By intervening between the upper and lower coils at the coil end or between the lower coil and the coil holder at least one of the members, it has good cushioning properties, good heat resistance and good fit to the coil, and is highly reliable. A rotating electric machine is obtained.

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

第１図は本発明の回転電機の一実施例の要部を示す縦断
面図、第２図は第１図の実施例に用いるフレキシブル板
と従来のフレキシブル板の摩耗特性を比較して示す曲線
図である。 １・・・鉄心　　　　　　２・・・バインド部材３・・
・コイルエンド　　３ａ・・・上コイルエンド３ｂ・・
・下コイルエンド ４・・・コイル受は部材である押え板 ５・・・フレキシブル板　５ａ・・・中敷き５ｂ・・・
下敷き 代理人　弁理士　井　上　−男 □ 第　　２　図 くり、逮、１巻（（Ｍｌ）Fig. 1 is a vertical cross-sectional view showing the main parts of an embodiment of the rotating electrical machine of the present invention, and Fig. 2 is a curve showing a comparison of the wear characteristics of the flexible plate used in the embodiment of Fig. 1 and the conventional flexible plate. It is a diagram. 1... Iron core 2... Bind member 3...
・Coil end 3a... Upper coil end 3b...
・Lower coil end 4...Coil holder is a component holding plate 5...Flexible plate 5a...Insole 5b...
Shitajiki agent Patent attorney Inoue - Male □ 2nd drawing, arrest, vol.

Claims (2)

【特許請求の範囲】[Claims] （１）　　コイルを鉄心のスロットに納めた後、樹脂を
含浸する全含浸方式の回転電機において、合成紙又は有
機質繊維の材料等から成る多孔質シー）Ｋ可撓性樹脂を
含浸し、これを積層モールドして得られたフレキシブル
板をコイルエンド部の上下コイル間又は下コイルとコイ
ル受は部材間の少なくとも一方に介在させたことを特徴
とする回転電機。(1) After the coil is placed in the slot of the iron core, in a fully impregnated type rotating electric machine in which the coil is impregnated with resin, a porous sheet made of synthetic paper or organic fiber material is impregnated with K flexible resin. A rotating electric machine characterized in that a flexible plate obtained by laminated molding is interposed between the upper and lower coils of a coil end portion or between the lower coil and the coil receiver at least on one side. （２）　　コイルおよび鉄心は回転子の部材とし、コイ
ルエンドの外周をバインド部材で緊縛したことを特徴と
する特許請求の範囲第１項記載の回転電機。(2) The rotating electric machine according to claim 1, wherein the coil and the iron core are members of a rotor, and the outer periphery of the coil end is tightly bound with a binding member.