JPH04150746A - Electric rotating machine - Google Patents
Electric rotating machineInfo
- Publication number
- JPH04150746A JPH04150746A JP26939590A JP26939590A JPH04150746A JP H04150746 A JPH04150746 A JP H04150746A JP 26939590 A JP26939590 A JP 26939590A JP 26939590 A JP26939590 A JP 26939590A JP H04150746 A JPH04150746 A JP H04150746A
- Authority
- JP
- Japan
- Prior art keywords
- core
- molded
- liquid crystal
- resin
- crystal plastic
- 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.)
- Pending
Links
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 19
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 16
- 239000004033 plastic Substances 0.000 claims abstract description 16
- 229920003023 plastic Polymers 0.000 claims abstract description 16
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 19
- 238000000465 moulding Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 6
- 238000013016 damping Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000008602 contraction Effects 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 241000239290 Araneae Species 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 7
- 229920001187 thermosetting polymer Polymers 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 239000002966 varnish Substances 0.000 description 4
- 238000012805 post-processing Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010101 extrusion blow moulding Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的〕
（産業上の利用分野）
本発明は樹脂モールド製固定子鉄心を使用した回転電機
に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a rotating electric machine using a resin molded stator core.
（従来の技術）
従来、回転電機の固定子は鉄心溝部１に高分子薄葉材料
２を入れスロットと巻線３の絶縁を行なっていた。一般
的には巻線３と鉄心溝部１はワニスを含浸、乾燥し、お
互いの固着及び空隙充填による熱伝導率の向上を行なっ
ていた。鉄心溝部１に薄葉材料２を入れる方式では、薄
葉材料２が変形し、鉄心溝部１との密着が悪くなり、熱
伝導率が低下する場合があった。この場合、巻線３に発
生したジュール熱は空気層４を介して鉄心５側に移るた
め、空気層４が断熱効果を示し熱伝導率が低下する。(Prior Art) Conventionally, in the stator of a rotating electric machine, a thin polymeric material 2 is inserted into the core groove 1 to insulate the slot and the winding 3. Generally, the winding 3 and the core groove 1 are impregnated with varnish and dried to improve thermal conductivity by adhering them to each other and filling voids. In the method of inserting the thin sheet material 2 into the core groove 1, the thin sheet material 2 may be deformed, resulting in poor adhesion to the core groove 1, resulting in a decrease in thermal conductivity. In this case, the Joule heat generated in the winding 3 is transferred to the iron core 5 side via the air layer 4, so the air layer 4 exhibits a heat insulating effect and the thermal conductivity decreases.
また、従来は鉄心５をステー斗ルスバイダ−６に圧入し
た形状で使用されており、鉄心５からステードルスパイ
ダー６を通して鉄心５１巻線３の発熱を逃すことができ
る。この方式は、鉄心５とステードルスパイダー６の組
付け、嵌め合い部の機械加工が必要なこと。また、自己
融着電線によるワニス処理を無くした場合に、鉄心の防
錆が困難である欠点があった。小容量機種においては鋼
板を加工しステードルスパイダーとすることが多く、冷
却効率向上のためのリブ取付が困難であった。Further, conventionally, the iron core 5 is press-fitted into the stapler spider 6, and the heat generated from the iron core 51 and the winding 3 can be released from the iron core 5 through the stapler spider 6. This method requires assembly of the iron core 5 and the staple spider 6, and machining of the fitting part. Furthermore, there is a drawback that rust prevention of the iron core is difficult when the varnish treatment using the self-fused wire is eliminated. In small-capacity models, steel plates are often processed to form the steady spider, making it difficult to attach ribs to improve cooling efficiency.
従来、鉄心及び巻線をモールドし、耐環境性の向上、組
立時のハンドリング性の向上を狙った一体モールドした
回転機においては、モールド材料として熱硬化性材料（
例えば不飽和ポリエステル。Conventionally, in rotary machines in which the iron core and windings are molded to improve environmental resistance and handleability during assembly, thermosetting materials (
For example, unsaturated polyester.
ジアリルフタレート等）を用いる場合が多く、成形時間
が５〜１０分と長く、生産性が低い欠点があった。また
、一般に熱硬化性樹脂は衝撃及び引張強度が薄肉では低
いため、厚肉にする必要がある。肉厚が厚くなると、金
属に比較し熱伝導率が低いことから放熱性が悪くなり、
巻線、鉄心の温度が上昇する欠点があった。diallyl phthalate, etc.), the molding time is as long as 5 to 10 minutes, and the productivity is low. In addition, since the impact and tensile strength of thermosetting resins are generally low in thin walls, it is necessary to make them thick. The thicker the wall, the lower the thermal conductivity compared to metal, so the heat dissipation becomes worse.
The disadvantage was that the temperature of the windings and iron core rose.
回転機運転時の騒音は冷却用のファンの風切り音が大き
な要因を占めるが、インバータ駆動にあっては鉄心より
発生する磁気音が大きな要因を占めると共に、人間の可
聴範囲の感度の高い領域にある。このため、非常に不快
な音であったが、従来の技術では対応が困難であるとい
う問題があった。Wind noise from cooling fans is a major factor in the noise generated when operating rotating machines, but in inverter drive, magnetic noise generated from the iron core is a major factor, and the noise is within the highly sensitive range of human hearing. be. For this reason, the sound was very unpleasant, but there was a problem that it was difficult to deal with with conventional technology.
（発明が解決しようとする課１ｉ）
従来技術においては、鉄心溝１と巻線３との間の密着が
十分でなく、巻線３より発生した熱を鉄心５まで十分伝
達できず、巻線３の温度が上昇する傾向があり、特性上
温度の余裕をとれない問題があった。(Issue 1i to be solved by the invention) In the prior art, the adhesion between the core groove 1 and the winding 3 is insufficient, and the heat generated from the winding 3 cannot be sufficiently transmitted to the core 5. There was a problem that the temperature of No. 3 had a tendency to rise, and it was not possible to take a temperature margin due to the characteristics.
従来の巻線及び鉄心を熱硬化性の樹脂によりモールドす
るモールドコイルにおいては、熱硬化性樹脂のモールド
の厚さを厚くする必要があるため、塗厚に比べ熱伝達が
低下し、鉄心２巻線の運転による発熱を外部にまで十分
放散しきれないという問題があった。また、熱硬化性樹
脂は硬化に要する時間が長く、生産性が低いという欠点
があった。In conventional molded coils in which the winding wire and core are molded with thermosetting resin, it is necessary to increase the thickness of the thermosetting resin mold, which reduces heat transfer compared to the coating thickness. There was a problem in that the heat generated by line operation could not be sufficiently dissipated to the outside. In addition, thermosetting resins have the drawback of requiring a long time to cure and low productivity.
インバータ駆動される回転電機にあっては、鉄心の磁気
音が無視しえなくなるほど大きくなる場合があり、騒音
が問題となるような用途には使用できないという問題点
があった。In rotating electric machines driven by inverters, the magnetic noise of the iron core may become so loud that it cannot be ignored, and there is a problem in that they cannot be used in applications where noise is a problem.
本発明の目的は上述の欠点を解決し、放電性が良く、生
産性の高い、またインバータ駆動に適した回転電機を得
ることにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks and to obtain a rotating electric machine that has good discharge performance, high productivity, and is suitable for inverter drive.
［発明の構成］
（課題を解決するための手段）
上述の問題点を解決するための手段として、回転電機の
固定子鉄心を液晶プラスチック等の成形時に高流動性を
示す熱可塑性の樹脂を用い、鉄心溝部、鉄心端部、鉄心
外径等を被覆モールドし一体化する方法を用いる。さら
に被覆厚としてはＩＩ以下の厚さで、通常０．２〜０．
５ｍｍ厚の液晶プラスチック層を用い、ステードルスパ
イダーを使用せず、モールドした固定子鉄心に巻線を納
めた後に、モールドにより形成したベアリングブラケッ
トとの嵌合部とベアリングブラケットを組立てる製造方
法を用いる。[Structure of the Invention] (Means for Solving the Problems) As a means for solving the above-mentioned problems, the stator core of a rotating electric machine is made of a thermoplastic resin that exhibits high fluidity during molding of liquid crystal plastic, etc. , a method is used in which the core grooves, core ends, core outer diameter, etc. are coated and molded into one piece. Furthermore, the coating thickness is II or less, usually 0.2 to 0.
Using a 5mm thick liquid crystal plastic layer, without using a staple spider, a manufacturing method is used in which the windings are placed in a molded stator core, and then the bearing bracket is assembled with the molded part that fits with the bearing bracket. .
さらに、上述の構成において、巻線として自己融着巻線
又は加熱融着電線を用いる。Furthermore, in the above configuration, a self-fusing winding or a heat-fusing wire is used as the winding.
（作用）
回転電機の鉄心を薄肉の樹脂によりモールドしたため、
従来の溝絶縁として用いられる薄葉材料と比較して鉄心
溝との密着性が向上し、溝絶縁と鉄心との間の空気層が
無（なる。このため、巻線と鉄心との熱伝達が向上し、
鉄心に対し巻線の熱がよく放散され冷却効率が向上する
。なお、鉄心のモールドにあたっては液晶プラスチック
を用いることにより、成形時の流動性が従来に比較し１
〜２桁向上する。このため、薄肉成形が可能となると共
に剛性が向上し、さらに割振効果も従来材料に比較し大
きく向上するため、インバータ駆動時などに鉄心表面よ
り発生する磁気音を押えることができる。さらに鉄心組
立を一体モールドすることにより、ベアリングブラケッ
トとの嵌合面をモールド時に同時形成するので、後加工
が不要となる。鉄心からの熱放散については、従来の熱
硬化性樹脂によるモールドと比較し薄肉であるため、熱
抵抗が下がり熱放散性が向上し冷却効果が向上する。さ
らに自己融着あるいは加熱融着電線を用いることにより
、従来のワニス処理を行なわない欠点である防錆効果に
ついても鉄心全体をモールドするため問題とならない。(Function) Since the iron core of the rotating electric machine is molded with thin resin,
Compared to thin sheet materials used as conventional groove insulation, the adhesion with the core groove is improved, and there is no air layer between the groove insulation and the core.This reduces the heat transfer between the windings and the core. improve,
Heat from the windings is well dissipated from the iron core, improving cooling efficiency. Furthermore, by using liquid crystal plastic for the molding of the iron core, the fluidity during molding has been improved by 1% compared to conventional methods.
- Improved by 2 digits. This makes it possible to form thin walls, improves rigidity, and greatly improves the distribution effect compared to conventional materials, making it possible to suppress magnetic noise generated from the core surface when driven by an inverter. Furthermore, by integrally molding the core assembly, the fitting surface with the bearing bracket is formed at the same time as molding, so post-processing is not necessary. Regarding heat dissipation from the iron core, since the core is thinner than conventional thermosetting resin molds, thermal resistance is lowered, heat dissipation is improved, and the cooling effect is improved. Furthermore, by using self-bonded or heat-fused wires, the rust prevention effect, which is a drawback of conventional varnish treatment, does not become a problem because the entire core is molded.
以上の方法で、生産性が向上すると共に、信頼性の高い
回転機を得ることができる。With the above method, productivity can be improved and a highly reliable rotating machine can be obtained.
（実施例） 以上に本発明の一実施例について例をあげて説明する。(Example) An embodiment of the present invention will be described above with reference to an example.
第１図は本発明の一実施例である固定子鉄心の縦断面図
であり、積層した鉄心５を液晶プラスチック等の材料７
を用い射出成形あるいは押出成形あるいはブロー成形に
より全体モールドした構成である。第２図は本発明の一
実施例である鉄心５の横断面図であり、鉄心溝部１及び
鉄心５の外周部についても一体成形された液晶プラスチ
ック等の樹脂７で０．２〜１鰭厚に成形されている。第
３図は本発明の一実施例である一体成形された鉄心５と
ベアリングブラケット８の組立状況を示しており、嵌合
部９については回転機の精度が出るに十分なだけの精度
でモールドされる。液晶プラスチック７は成形収縮率が
非常に小さく、後加工なしでも十分に精度を確保するこ
とが可能である。FIG. 1 is a longitudinal sectional view of a stator core according to an embodiment of the present invention, in which a laminated core 5 is connected to a material 7 made of liquid crystal plastic or the like.
The entire structure is molded using injection molding, extrusion molding, or blow molding. FIG. 2 is a cross-sectional view of the core 5 which is an embodiment of the present invention, and the core groove 1 and the outer periphery of the core 5 are also made of resin 7 such as liquid crystal plastic integrally molded with a thickness of 0.2 to 1 fin. It is molded into. FIG. 3 shows the assembly of an integrally molded iron core 5 and bearing bracket 8, which is an embodiment of the present invention, and the fitting part 9 is molded with sufficient precision to obtain the precision of the rotating machine. be done. The liquid crystal plastic 7 has a very small molding shrinkage rate, and it is possible to ensure sufficient accuracy without post-processing.
また、特に薄肉時には剛性が非常に高くなり、アルミニ
ウムと同等あるいはそれ以上の剛性を示すため、強度上
の問題も解決できる。第４図は本発明の一実施例の組立
状況を示した図であり、ステードルスパイダー６を無く
した構造を示している。In addition, the rigidity is extremely high, especially when the wall is thin, and the rigidity is equal to or higher than that of aluminum, so it can also solve strength problems. FIG. 4 is a diagram showing an assembly situation of an embodiment of the present invention, and shows a structure in which the staple spider 6 is eliminated.
鉄心自体の剛性及び液晶プラスチックの剛性により強度
的には十分である。また液晶プラスチックは耐熱性が高
い（連続使用温度２００℃以上）ため、使用中の温度（
熱）による劣化の進行も遅く、枯れによる寸法変化も使
用温度から見て生じにくく、信頼性も高いと言える。The strength is sufficient due to the rigidity of the core itself and the rigidity of the liquid crystal plastic. In addition, since liquid crystal plastic has high heat resistance (continuous use temperature of 200℃ or more), the temperature during use (
The progress of deterioration due to heat (heat) is slow, dimensional changes due to withering are unlikely to occur considering the operating temperature, and it can be said to be highly reliable.
本発明の一実施例（第４図）においてベアリングブラッ
トも樹脂で成形したものを用いることができる。In one embodiment of the present invention (FIG. 4), the bearing brat may also be made of resin.
鉄心５を樹脂７にて薄肉モールドしたため、鉄心溝部１
と樹脂７との密着性が良くなり、断熱作用をする空気層
が形成されず、巻線からの熱伝達性が良くなり、巻線温
度の低減が可能となる。Since the core 5 is thinly molded with resin 7, the core groove 1
The adhesion between the wire and the resin 7 is improved, an air layer that acts as a heat insulator is not formed, the heat transfer from the winding is improved, and the winding temperature can be reduced.
モールドにあたっては液晶プラスチックを用いるため、
薄肉化が可能であり、金属に比較し熱伝導度が低い点も
特に問題とはならない。また液晶プラスチックは剛性が
高く、また、成形収縮率も小さいため、寸法精度が高く
、後加工が不要となる。Since liquid crystal plastic is used for the mold,
The fact that it can be made thinner and has lower thermal conductivity than metal does not pose any particular problem. Furthermore, liquid crystal plastics have high rigidity and low mold shrinkage, resulting in high dimensional accuracy and no need for post-processing.
剛性が高い材料で鉄心を一体成形したため、鉄心自体の
剛性が向上し、また、インバータ駆動時などに生ずる磁
気音は一般に鉄心の表面より発生するため、その制振効
果も大きい。特にベアリングブラケットも樹脂成形品を
用いた場合、樹脂材料の内部Ｒ２の大きさを利用した制
振効果、低騒音効果が得られ、低騒音の回転機を得るこ
とができる。Since the core is integrally molded from a highly rigid material, the rigidity of the core itself is improved, and since the magnetic noise generated when driving an inverter is generally generated from the surface of the core, the vibration damping effect is also large. In particular, when the bearing bracket is also made of a resin molded product, a vibration damping effect and a low noise effect can be obtained by utilizing the size of the inside R2 of the resin material, and a low noise rotating machine can be obtained.
モールド用の樹脂として熱可塑性材料の１種である液晶
プラスチックを用いることにより、従来の熱硬化性樹脂
の成型時間５〜１０分に比較し、１ｍｍ５〜１／１０の
成型時間で成型が可能となり、また、耐衝撃性も向上す
る。また熱放散性も薄肉化により大きく向上する。また
比重差から軽量化できる。By using liquid crystal plastic, which is a type of thermoplastic material, as the resin for the mold, it is possible to mold 1mm5 to 1/10 of the molding time compared to 5 to 10 minutes for conventional thermosetting resins. , the impact resistance is also improved. Furthermore, heat dissipation performance is greatly improved by making the wall thinner. Also, the weight can be reduced due to the difference in specific gravity.
巻線として加熱融着電線を用いることにより、一体成型
した鉄心と併用することにより、ワニス処理を廃止でき
、生産性が大きく向上する。By using a heat-fused wire as the winding wire in combination with an integrally molded iron core, varnish treatment can be eliminated, greatly improving productivity.
本発明の実施例の効果としては、従来に比較し、熱放散
性の良い、生産性の良い回転電機を得ることができる。As an effect of the embodiment of the present invention, it is possible to obtain a rotating electrical machine with better heat dissipation and productivity than in the past.
また、インバータ駆動等の磁気音を発生しやすい機種に
ついては、振動を押える効果があり、低騒音の回転電機
を得ることができる。In addition, for models that tend to generate magnetic noise, such as those driven by inverters, the present invention has the effect of suppressing vibrations, making it possible to obtain a low-noise rotating electric machine.
一体成形化、フレームレスにより軽量化が可能である。It is possible to reduce weight by integral molding and frameless design.
（他の実施例）
本発明の他の実施例について第６及び第７図により説明
する。従来の小容量機においては鋼板フレームのステー
ドルスパイダーを使用する場合が多く、放熱性を良くす
るためのリブをつけることが困難であつた。今回の一体
モールド方式においては、薄肉のリブをつけることは非
常に容易であり、表面積を大きく向上することができる
。リブ１０は最低の剛性があれば良いため、１龍厚以下
の薄肉とすることが可能であり、薄肉による使用材料の
削減も可能となる。また、リブの本数。(Other Embodiments) Other embodiments of the present invention will be described with reference to FIGS. 6 and 7. Conventional small-capacity machines often use a steel frame staddle spider, and it has been difficult to add ribs to improve heat dissipation. With the current integral molding method, it is very easy to add thin ribs, and the surface area can be greatly improved. Since the rib 10 only needs to have the minimum rigidity, it can be made as thin as one dragon thickness or less, and the thin wall also makes it possible to reduce the amount of material used. Also, the number of ribs.
高さ等も一体成形により作るため最適構造の選定が可能
となる。Since height etc. are also made by integral molding, it is possible to select the optimal structure.
［発明の効果］
本発明の採用により生産性の高い軽量かつ熱放散性の良
い、効率の良い回転電機を得ることができると共に、低
騒音の回転電機を得ることができる。[Effects of the Invention] By employing the present invention, it is possible to obtain a highly productive rotating electrical machine that is lightweight, has good heat dissipation properties, and has high efficiency, as well as a low-noise rotating electrical machine.
第１図は本発明の一実施例である回転電機の固定子鉄心
の縦断面図、第２図は第１図の一部横断面図、第３図は
回転電機の嵌合部分の拡大図、第４図は回転電機の縦断
面図、第５図は従来の回転電機の固定子鉄心の横断面図
、第６図及び第７図は本発明の他の実施例である鉄心外
径にリブを成形した縦断面図及び横断面図である。Fig. 1 is a vertical cross-sectional view of a stator core of a rotating electrical machine that is an embodiment of the present invention, Fig. 2 is a partial cross-sectional view of Fig. 1, and Fig. 3 is an enlarged view of a mating part of the rotating electrical machine. , FIG. 4 is a vertical cross-sectional view of a rotating electrical machine, FIG. 5 is a cross-sectional view of a stator core of a conventional rotating electrical machine, and FIGS. 6 and 7 are core outer diameters of other embodiments of the present invention. FIG. 2 is a vertical cross-sectional view and a cross-sectional view of molded ribs.
Claims (1)
、前記固定子鉄心を高流動性の熱可塑性樹脂で鉄心の溝
内絶縁及び固定子鉄心外周を一体モールドし、前記熱可
塑性樹脂は液晶プラスチックで樹脂厚を１ｍｍ以下とし
て鉄心全体を被覆した事を特徴とする回転電機。In a rotating electrical machine having a stator core made of a resin mold, the stator core is integrally molded with a highly fluid thermoplastic resin to insulate the grooves of the core and the outer periphery of the stator core, and the thermoplastic resin is made of liquid crystal plastic. A rotating electrical machine characterized by covering the entire iron core with a thickness of 1 mm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26939590A JPH04150746A (en) | 1990-10-09 | 1990-10-09 | Electric rotating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26939590A JPH04150746A (en) | 1990-10-09 | 1990-10-09 | Electric rotating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04150746A true JPH04150746A (en) | 1992-05-25 |
Family
ID=17471813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26939590A Pending JPH04150746A (en) | 1990-10-09 | 1990-10-09 | Electric rotating machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04150746A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0822640A1 (en) * | 1996-07-31 | 1998-02-04 | Partzsch, Thomas | Partial discharge tight low voltage isolation for electric machine windings |
| JP2001289173A (en) * | 2000-04-06 | 2001-10-19 | Matsushita Electric Ind Co Ltd | Compressor and electric motor |
| JP2002238198A (en) * | 2001-02-07 | 2002-08-23 | Ueno Seiyaku Oyo Kenkyusho:Kk | Stator core for hermetic motor |
| JP2004320937A (en) * | 2003-04-18 | 2004-11-11 | Yaskawa Electric Corp | Motor |
| WO2008012880A1 (en) * | 2006-07-26 | 2008-01-31 | Mitsubishi Electric Corporation | Dynamo-electric machine |
| JP2009213348A (en) * | 2008-03-05 | 2009-09-17 | Minebea Co Ltd | Electric motor |
| EP3573219A4 (en) * | 2017-01-20 | 2019-11-27 | Mitsubishi Electric Corporation | Electric motor, air conditioner, and method for manufacturing electric motor |
| DE102008064132B4 (en) | 2008-03-05 | 2024-03-28 | Minebea Mitsumi Inc. | Electric machine |
| WO2024074557A1 (en) * | 2022-10-07 | 2024-04-11 | Groschopp Ag Drives & More | Method for producing an electric motor, and electric motor |
-
1990
- 1990-10-09 JP JP26939590A patent/JPH04150746A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0822640A1 (en) * | 1996-07-31 | 1998-02-04 | Partzsch, Thomas | Partial discharge tight low voltage isolation for electric machine windings |
| JP4592143B2 (en) * | 2000-04-06 | 2010-12-01 | パナソニック株式会社 | Compressor and electric motor |
| JP2001289173A (en) * | 2000-04-06 | 2001-10-19 | Matsushita Electric Ind Co Ltd | Compressor and electric motor |
| JP2002238198A (en) * | 2001-02-07 | 2002-08-23 | Ueno Seiyaku Oyo Kenkyusho:Kk | Stator core for hermetic motor |
| JP2004320937A (en) * | 2003-04-18 | 2004-11-11 | Yaskawa Electric Corp | Motor |
| KR101030844B1 (en) * | 2006-07-26 | 2011-04-22 | 미쓰비시덴키 가부시키가이샤 | Dynamo-electric machine |
| JPWO2008012880A1 (en) * | 2006-07-26 | 2009-12-17 | 三菱電機株式会社 | Rotating electric machine |
| WO2008012880A1 (en) * | 2006-07-26 | 2008-01-31 | Mitsubishi Electric Corporation | Dynamo-electric machine |
| US8134272B2 (en) | 2006-07-26 | 2012-03-13 | Mitsubishi Electric Corporation | Dynamoelectric machine |
| JP5005354B2 (en) * | 2006-07-26 | 2012-08-22 | 三菱電機株式会社 | Rotating electric machine |
| EP2045896B1 (en) * | 2006-07-26 | 2019-09-04 | Mitsubishi Electric Corporation | Dynamo-electric machine |
| JP2009213348A (en) * | 2008-03-05 | 2009-09-17 | Minebea Co Ltd | Electric motor |
| DE102008064132B4 (en) | 2008-03-05 | 2024-03-28 | Minebea Mitsumi Inc. | Electric machine |
| EP3573219A4 (en) * | 2017-01-20 | 2019-11-27 | Mitsubishi Electric Corporation | Electric motor, air conditioner, and method for manufacturing electric motor |
| US11817740B2 (en) | 2017-01-20 | 2023-11-14 | Mitsubishi Electric Corporation | Electric motor, air conditioner, and method for producing electric motor |
| WO2024074557A1 (en) * | 2022-10-07 | 2024-04-11 | Groschopp Ag Drives & More | Method for producing an electric motor, and electric motor |
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