JP2008259371A - Rotary electric machine - Google Patents

Rotary electric machine Download PDF

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JP2008259371A
JP2008259371A JP2007100992A JP2007100992A JP2008259371A JP 2008259371 A JP2008259371 A JP 2008259371A JP 2007100992 A JP2007100992 A JP 2007100992A JP 2007100992 A JP2007100992 A JP 2007100992A JP 2008259371 A JP2008259371 A JP 2008259371A
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thickness
winding
field coil
width direction
peripheral side
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Tomoya Imanishi
友也 今西
Yoichi Hasegawa
洋一 長谷川
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Denso Corp
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Denso Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To improve a space factor of a field coil 2 in a rotary electric machine using an edgewise winding for the field coil 2. <P>SOLUTION: A winding part (an edgewise winding) is formed by winding a coated rectangular wire in a width direction (in an edgewise direction). Then, the winding part is compressed in a plate-thickness direction by a press so as to form a coating thickness t1 in a thickness direction of the rectangular wire thinner than a coating thickness t2 in a width direction of the rectangular wire. The winding part is compressed in a plate-thickness direction in order to eliminate a difference between a thickness on the inner peripheral side of the winding part and that of on the outer peripheral side of the winding part. Thus, it is possible to adjust the whole winding part to a uniform thickness. As a result, it is possible to make a winding space S, provided between a yoke 1 and a flange part 3b of a magnetic pole 3 assembled with the field coil 2, smaller than that of the conventional one. Accordingly, it is possible to improve a space factor of the field coil 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、エッジワイズ巻線を界磁コイルに用いた回転電機に関する。   The present invention relates to a rotating electrical machine using edgewise windings as field coils.

従来、巻線界磁式の直流モータを小型化するには、巻線（界磁コイル）の占積率を高めることが重要であり、図４（ａ）に示す様に、断面矩形状の平角線を幅方向（エッジワイズ方向）に巻いたエッジワイズ巻線を界磁コイル１００に使用する場合は、断面円形の丸線を使用した界磁コイルと比較して占積率を向上させることが可能である（特許文献１参照）。
特開２００６−２７１１２１号公報 Conventionally, in order to reduce the size of a wound field DC motor, it is important to increase the space factor of the winding (field coil). As shown in FIG. When an edgewise winding in which a flat wire is wound in the width direction (edgewise direction) is used for the field coil 100, the space factor should be improved as compared with a field coil using a round wire with a circular cross section. Is possible (see Patent Document 1).
JP 2006-271121 A

ところが、被膜付き平角線をエッジワイズ方向に巻線した界磁コイルでは、「界磁コイルの層数×被膜を含めた平角線の厚さ（＝導体部の厚さ＋２×被膜厚さ）」が径方向の巻線スペースとして必要となるため、被膜の厚さが占積率低下の要因となっている。
また、平角線を幅方向に巻いたエッジワイズ巻線は、平角線を厚さ方向に巻いたフラットワイズ巻線（図５参照）と比較して、コーナー部（曲げ部）の内周側の曲率と外周側の曲率との差が大きく、曲率の大きい内周側の方が曲率の小さい外周側より厚みが大きくなる（内周側の厚みｄ１＞外周側の厚みｄ２）。 However, in the field coil in which the coated rectangular wire is wound in the edgewise direction, “the number of field coil layers × the thickness of the rectangular wire including the coating (= conductor portion thickness + 2 × film thickness)” Is necessary as a winding space in the radial direction, and the thickness of the coating is a factor in reducing the space factor.
In addition, the edgewise winding in which the flat wire is wound in the width direction is compared with the flatwise winding in which the flat wire is wound in the thickness direction (see FIG. 5). The difference between the curvature and the curvature on the outer peripheral side is larger, and the thickness on the inner peripheral side with the larger curvature is larger than the outer peripheral side with the smaller curvature (thickness d1 on the inner peripheral side> thickness d2 on the outer peripheral side).

このため、エッジワイズ巻線を界磁コイル１００に使用する場合は、図４（ｂ）に示す様に、厚みｄ１の大きいコーナー部の内周側に合わせて径方向の巻線スペースＳ（磁極の鍔部１１０とヨーク１２０との間に設けられるスペース）が決定されるため、これも占積率低下の要因となっている。
本発明は、上記事情に基づいて成されたもので、その目的は、エッジワイズ巻線を界磁コイルに使用した回転電機において、界磁コイルの占積率を改善することにある。 Therefore, when the edgewise winding is used for the field coil 100, as shown in FIG. 4B, the radial winding space S (magnetic pole) is aligned with the inner peripheral side of the corner portion having a large thickness d1. The space provided between the flange portion 110 and the yoke 120) is determined, and this also causes a decrease in the space factor.
The present invention has been made based on the above circumstances, and an object thereof is to improve the space factor of a field coil in a rotating electrical machine using an edgewise winding as a field coil.

（請求項１の発明）
本発明は、被膜付き平角線を幅方向に巻回したエッジワイズ巻線を界磁コイルに用いた回転電機であって、界磁コイルは、平角線の厚さ方向の被膜厚さが幅方向の被膜厚さより薄く設けられていることを特徴とする。
上記の構成によれば、平角線の厚さ方向の被膜厚さを幅方向の被膜厚さより薄くしたことにより、界磁コイルを配置するための径方向の巻線スペースを小さくできるので、その分、界磁コイルの占積率を向上させることができる。 (Invention of Claim 1)
The present invention relates to a rotating electric machine using an edgewise winding obtained by winding a coated rectangular wire in the width direction as a field coil, and the field coil has a thickness in the width direction of the flat wire. It is characterized by being provided thinner than the film thickness.
According to the above configuration, since the film thickness in the thickness direction of the rectangular wire is made thinner than the film thickness in the width direction, the radial winding space for arranging the field coil can be reduced. The space factor of the field coil can be improved.

（請求項２の発明）
請求項１に記載した回転電機において、界磁コイルは、コーナー部の内周側と外周側とが同一厚さに調整されていることを特徴とする。
この場合、径方向の巻線スペースを平角線の厚い側（コーナ部の内周側）に合わせて決定する必要がないので、界磁コイルの占積率を改善できる。 (Invention of Claim 2)
In the rotating electric machine according to claim 1, the field coil is characterized in that the inner peripheral side and the outer peripheral side of the corner portion are adjusted to have the same thickness.
In this case, it is not necessary to determine the radial winding space in accordance with the thick flat wire (inner peripheral side of the corner portion), so that the space factor of the field coil can be improved.

（請求項３の発明）
請求項１に記載した回転電機の製造方法であって、平角線の被膜は、導体部の表面に絶縁ワニスを塗布する塗布工程と、塗布された絶縁ワニスを焼き付ける焼付工程とを経て形成され、塗布工程では、平角線の幅方向の膜厚より、厚さ方向の膜厚の方が薄くなる様に、絶縁ワニスを塗布することを特徴とする。
上記の方法によれば、導体部の表面に絶縁ワニスを塗布する際に、導体部の幅方向より厚さ方向に絶縁ワニスの膜厚を薄く塗布することで、平角線の厚さ方向の被膜厚さを幅方向の被膜厚さより薄くできる。 (Invention of Claim 3)
The method of manufacturing a rotating electrical machine according to claim 1, wherein the flat wire film is formed through an application step of applying an insulating varnish to the surface of the conductor portion and a baking step of baking the applied insulating varnish. In the coating step, the insulating varnish is applied so that the thickness in the thickness direction is thinner than the thickness in the width direction of the flat wire.
According to the above method, when the insulating varnish is applied to the surface of the conductor portion, the coating in the thickness direction of the rectangular wire is performed by applying the insulating varnish thinly in the thickness direction from the width direction of the conductor portion. The thickness can be made thinner than the film thickness in the width direction.

（請求項４の発明）
請求項１または２に記載した回転電機の製造方法であって、界磁コイルは、平角線を幅方向に所定数巻回した後、界磁コイル全体を層方向に圧縮することで、層方向のコイル厚さが所定の寸法に調整されることを特徴とする。
平角線を幅方向（エッジワイズ方向）に巻回して形成されるエッジワイズ巻線は、コーナー部の内周側と外周側とで曲率が大きく異なり、内周側の方が外周側より厚みが大きくなるため、占積率低下の要因となっている。 (Invention of Claim 4)
3. The method of manufacturing a rotating electrical machine according to claim 1, wherein the field coil is wound in a layer direction by compressing the entire field coil in the layer direction after winding a rectangular wire a predetermined number of times in the width direction. The coil thickness is adjusted to a predetermined dimension.
Edgewise windings formed by winding a flat wire in the width direction (edgewise direction) have greatly different curvatures on the inner peripheral side and outer peripheral side of the corner, and the inner peripheral side is thicker than the outer peripheral side. Since it becomes large, it is a factor of lowering the space factor.

これに対し、本発明では、平角線を幅方向に所定数巻回した後、界磁コイル全体を層方向に圧縮することで、コーナー部の内周側と外周側とで厚みの差を無くすことができ、均一な厚さに調整できる。その結果、界磁コイルの占積率を向上させることができる。
また、界磁コイル全体を層方向に圧縮することで、厚さ方向の被膜厚さを薄くすることができ、占積率の向上につながる。 On the other hand, in the present invention, after the rectangular wire is wound a predetermined number of times in the width direction, the entire field coil is compressed in the layer direction, thereby eliminating the difference in thickness between the inner peripheral side and the outer peripheral side of the corner portion. Can be adjusted to a uniform thickness. As a result, the space factor of the field coil can be improved.
Also, by compressing the entire field coil in the layer direction, the film thickness in the thickness direction can be reduced, leading to an improvement in the space factor.

本発明を実施するための最良の形態を以下の実施例により詳細に説明する。   The best mode for carrying out the present invention will be described in detail with reference to the following examples.

図１（ａ）はヨークＡＳＳＹの展開図、同図（ｂ）はＡ−Ａ断面拡大図である。
本実施例の回転電機は、例えば、自動車用エンジンを始動するためのスタータモータに適用される。
スタータモータは、界磁に電磁石を用いた電磁石界磁式の直流電動機であり、図１（ａ）に示す様に、電磁石を構成するヨークＡＳＳＹを備える。
ヨークＡＳＳＹは、磁気回路を形成するヨーク１と、このヨーク１の内周に界磁コイル２を組み付けて固定される４個の磁極３とを有する。 FIG. 1A is a development view of the yoke ASSY, and FIG. 1B is an enlarged cross-sectional view taken along the line AA.
The rotating electrical machine of this embodiment is applied to, for example, a starter motor for starting an automobile engine.
The starter motor is an electromagnet field DC motor using an electromagnet as a field, and includes a yoke ASSY that constitutes an electromagnet, as shown in FIG.
The yoke ASSY includes a yoke 1 that forms a magnetic circuit, and four magnetic poles 3 that are fixed by assembling a field coil 2 on the inner periphery of the yoke 1.

ヨーク１は、例えば、強磁性体である鉄板を円筒形状に丸めて形成される。
磁極３は、図１（ｂ）に示す様に、界磁コイル２が嵌め合わされるボス部３ａと、ヨーク１との間に界磁コイル２を保持するための鍔部３ｂとが設けられている。４個の磁極３は、ヨーク１の周方向に等間隔（９０度ピッチ）に配置され、ボス部３ａの中心部がヨーク１にかしめ固定されている。
界磁コイル２は、被膜付き平角線７（図３参照）を幅方向（エッジワイズ方向）に所定数巻回して形成されるエッジワイズ巻線が使用される。
４個の界磁コイル２は、２直列−２並列に接続されている。つまり、直列に接続された二個一組の界磁コイル２が二組設けられ、この二組が並列に接続されている。 The yoke 1 is formed, for example, by rolling an iron plate that is a ferromagnetic material into a cylindrical shape.
As shown in FIG. 1B, the magnetic pole 3 is provided with a boss portion 3 a into which the field coil 2 is fitted and a flange portion 3 b for holding the field coil 2 between the yoke 1. Yes. The four magnetic poles 3 are arranged at equal intervals (90-degree pitch) in the circumferential direction of the yoke 1, and the central portion of the boss portion 3 a is caulked and fixed to the yoke 1.
The field coil 2 uses an edgewise winding formed by winding a predetermined number of coated rectangular wires 7 (see FIG. 3) in the width direction (edgewise direction).
The four field coils 2 are connected in 2 series-2 parallel. That is, two sets of two field coils 2 connected in series are provided, and the two sets are connected in parallel.

直列に接続された二個一組の界磁コイル２は、図１（ａ）に示す様に、一方の界磁コイル２から引き出されたコイル端部２ａが正極ブラシ４のリード線４ａに接続され、他方の界磁コイル２から引き出されたコイル端部２ｂがモータリード板５に接続される。
モータリード板５は、図２に示す様に、ヨーク１とエンドフレーム（図示せず）との間に固定されるゴム製のグロメット６に保持されて、モータの外側に取り出された端部が図示しない電磁スイッチのモータ端子に接続されている。電磁スイッチは、モータの通電電流をオン／オフする働きを有する。 The pair of field coils 2 connected in series has a coil end 2a drawn from one field coil 2 connected to the lead wire 4a of the positive brush 4 as shown in FIG. The coil end 2 b drawn from the other field coil 2 is connected to the motor lead plate 5.
As shown in FIG. 2, the motor lead plate 5 is held by a rubber grommet 6 fixed between a yoke 1 and an end frame (not shown), and an end portion taken out to the outside of the motor is formed. It is connected to a motor terminal of an electromagnetic switch (not shown). The electromagnetic switch has a function of turning on / off the energization current of the motor.

続いて、界磁コイル２の製造方法を図３を参照しながら説明する。
まず、二個一組の界磁コイル２を製造できるだけの長さを有する１本の被膜付き平角線７を準備する。この被膜付き平角線７は、例えば、矩形断面を有する平角銅線７ａ（被膜付き平角線７の導体部）の表面に電気絶縁性を有する被膜７ｂ（絶縁ワニス）が塗布焼き付けしてある。続いて、同図（ａ）に示す様に、平角線７の両端部を巻芯８にセットする。巻芯８は、磁極３のボス部３ａと同一形状に設けられている。
次に、巻芯８にセットされた平角線７の端部を図示しないクランプ装置により保持して、同図（ｂ）〜（ｄ）に示す様に、左右両側の巻芯８をそれぞれ回転させながら、巻芯８の周囲に平角線７を幅方向（エッジワイズ方向）に巻き取っていく。 Then, the manufacturing method of the field coil 2 is demonstrated, referring FIG.
First, one coated rectangular wire 7 having a length sufficient to manufacture a set of two field coils 2 is prepared. For example, the coated rectangular wire 7 is formed by coating and baking a coating 7b (insulating varnish) having electrical insulation on the surface of a rectangular copper wire 7a having a rectangular cross section (the conductor portion of the coated rectangular wire 7). Subsequently, both ends of the flat wire 7 are set on the core 8 as shown in FIG. The winding core 8 is provided in the same shape as the boss 3 a of the magnetic pole 3.
Next, the end of the flat wire 7 set on the core 8 is held by a clamping device (not shown), and the cores 8 on both the left and right sides are rotated as shown in FIGS. However, the rectangular wire 7 is wound around the winding core 8 in the width direction (edgewise direction).

所定回数巻き取ることにより、連結部９によって接続された二個のエッジワイズ巻線（巻線部１０と呼ぶ）が形成される。
続いて、同図（ｅ）に示す様に、連結部９に折り曲げ用の治具１１を当てて、この治具１１を支点として図示矢印方向に二つの巻線部１０を折り曲げる。同図（ｆ）は、折り曲げ後の形状を示す。
この後、巻線部１０の厚さを均一化するために、巻線部１０をプレスで板厚方向（層方向）に圧縮する。
最後に、平面状に形成されている２個の巻線部１０をヨーク１の内周形状に沿って配置できる様に、巻線部１０と連結部９に曲率を付けるための押圧成形を行う。 By winding a predetermined number of times, two edgewise windings (referred to as a winding portion 10) connected by the connecting portion 9 are formed.
Subsequently, as shown in FIG. 5E, a bending jig 11 is applied to the connecting portion 9, and the two winding portions 10 are bent in the direction indicated by the arrow with the jig 11 as a fulcrum. FIG. 5F shows the shape after bending.
Thereafter, in order to make the thickness of the winding part 10 uniform, the winding part 10 is compressed in the plate thickness direction (layer direction) with a press.
Finally, press forming is performed to give curvature to the winding portion 10 and the connecting portion 9 so that the two winding portions 10 formed in a planar shape can be arranged along the inner peripheral shape of the yoke 1. .

（実施例１の作用及び効果）
本実施例の界磁コイル２は、平角線７をエッジワイズ方向に巻いて形成される巻線部１０をプレスで板厚方向に圧縮することにより、図１（ｂ）に示す様に、平角線７の厚さ方向の被膜厚さｔ１を幅方向の被膜厚さｔ２より薄く形成することができる。
エッジワイズ巻線を用いた界磁コイル２では、「界磁コイル２の層数×被膜７ｂを含めた平角線７の厚さ（＝平角銅線７ａの厚さ＋２×被膜厚さｔ１）」が径方向の巻線スペースとして必要となるため、平角線７の厚さ方向の被膜厚さｔ１を薄く形成することにより、界磁コイル２の占積率を向上させることができる。 (Operation and Effect of Example 1)
As shown in FIG. 1B, the field coil 2 of the present embodiment compresses a winding portion 10 formed by winding a flat wire 7 in an edgewise direction in a plate thickness direction by a press. The film thickness t1 in the thickness direction of the line 7 can be formed thinner than the film thickness t2 in the width direction.
In the field coil 2 using the edgewise winding, “the number of layers of the field coil 2 × the thickness of the flat wire 7 including the coating 7b (= the thickness of the flat copper wire 7a + 2 × the film thickness t1)” Is necessary as a winding space in the radial direction, the space factor of the field coil 2 can be improved by forming the film thickness t1 in the thickness direction of the flat wire 7 thin.

また、エッジワイズ巻線では、コーナー部の内周側と外周側との曲率の違いにより、内周側の厚みの方が外周側の厚みより大きくなるが、上記の様に、平角線７をエッジワイズ方向に巻き取った後、巻線部１０をプレスで厚さ方向に圧縮することにより、内周側の厚みと外周側の厚みとの差を無くすことができ、巻線部１０を均一な厚さに調整できる。その結果、界磁コイル２が組み付けられる磁極３の鍔部３ｂとヨーク１との間に設けられる巻線スペースＳを従来より小さくできるので、界磁コイル２の占積率向上に繋がる。   In the edgewise winding, the thickness of the inner peripheral side is larger than the thickness of the outer peripheral side due to the difference in curvature between the inner peripheral side and the outer peripheral side of the corner portion. After winding in the edgewise direction, by compressing the winding portion 10 in the thickness direction with a press, the difference between the thickness on the inner peripheral side and the thickness on the outer peripheral side can be eliminated, and the winding portion 10 is made uniform. Can be adjusted to an appropriate thickness. As a result, the winding space S provided between the flange 3b of the magnetic pole 3 to which the field coil 2 is assembled and the yoke 1 can be made smaller than before, leading to an improvement in the space factor of the field coil 2.

（変形例）
実施例１では、巻線部１０（エッジワイズ巻線）をプレスで厚さ方向に圧縮することで、平角線７の厚さ方向の被膜厚さｔ１を幅方向の被膜厚さｔ２より薄く形成しているが、この変形例では、平角銅線７ａの表面に被膜７ｂを形成する段階で厚さ方向の被膜厚さｔ１を幅方向の被膜厚さｔ２より薄く形成する方法を説明する。
平角線７の被膜７ｂは、平角銅線７ａの表面に絶縁ワニスを塗布して焼き付けることにより形成されるが、絶縁ワニスを塗布する際に、平角線７の厚さ方向と幅方向とで被膜７ｂの厚さ（絶縁ワニスの厚さ）が調整される。つまり、絶縁ワニスは、平角線７の幅方向より厚さ方向の方が薄く塗布されて焼き付けされる。 (Modification)
In Example 1, the winding portion 10 (edgewise winding) is compressed in the thickness direction by a press, so that the thickness t1 of the flat wire 7 in the thickness direction is made thinner than the thickness t2 in the width direction. However, in this modification, a method of forming the film thickness t1 in the thickness direction thinner than the film thickness t2 in the width direction at the stage of forming the film 7b on the surface of the flat copper wire 7a will be described.
The coating 7b of the flat wire 7 is formed by applying and baking an insulating varnish on the surface of the flat copper wire 7a. When the insulating varnish is applied, the coating 7b is formed in the thickness direction and the width direction of the flat wire 7. The thickness of 7b (the thickness of the insulating varnish) is adjusted. That is, the insulating varnish is applied and baked thinner in the thickness direction than in the width direction of the flat wire 7.

（ａ）ヨークＡＳＳＹの展開図、（ｂ）Ａ−Ａ断面図である（実施例１）。(A) The developed view of yoke ASSY, (b) It is AA sectional drawing (Example 1). ヨークＡＳＳＹの軸方向平面図である。It is an axial direction top view of yoke ASSY. 界磁コイルの製造工程図である（実施例１）。It is a manufacturing-process figure of a field coil (Example 1). エッジワイズ巻線の展開図、（ｂ）Ｂ−Ｂ断面図である（従来技術）。It is a development view of edgewise winding, and (b) BB sectional view (prior art). フラットワイズ巻線の展開図である。It is an expanded view of a flatwise winding.

符号の説明Explanation of symbols

２ 界磁コイル
７ 被膜付き平角線
７ａ 平角銅線
７ｂ 被膜
ｔ１ 平角線の厚さ方向の被膜厚さ
ｔ２ 平角線の幅方向の被膜厚さ 2 Field coil 7 Flat wire with coating 7a Flat copper wire 7b Coating t1 Film thickness in the thickness direction of the flat wire t2 Film thickness in the width direction of the flat wire

Claims (4)

被膜付き平角線を幅方向に所定数巻回して形成されるエッジワイズ巻線を界磁コイルに用いた回転電機であって、
前記界磁コイルは、前記平角線の厚さ方向の被膜厚さが幅方向の被膜厚さより薄く設けられていることを特徴とする回転電機。 A rotating electrical machine using an edgewise winding formed by winding a rectangular wire with a coating a predetermined number of times in the width direction as a field coil,
The rotating electric machine according to claim 1, wherein the field coil is provided with a film thickness in the thickness direction of the rectangular wire thinner than a film thickness in the width direction. 請求項１に記載した回転電機において、
前記界磁コイルは、コーナー部の内周側と外周側とが同一厚さに調整されていることを特徴とする回転電機。 In the rotating electrical machine according to claim 1,
The rotating electric machine according to claim 1, wherein the field coil is adjusted to have the same thickness on an inner peripheral side and an outer peripheral side of a corner portion. 請求項１に記載した回転電機の製造方法であって、
前記平角線の被膜は、導体部の表面に絶縁ワニスを塗布する塗布工程と、塗布された絶縁ワニスを焼き付ける焼付工程とを経て形成され、
前記塗布工程では、前記平角線の幅方向の膜厚より、厚さ方向の膜厚の方が薄くなる様に、前記絶縁ワニスを塗布することを特徴とする回転電機の製造方法。 A method of manufacturing a rotating electrical machine according to claim 1,
The flat wire film is formed through an application step of applying an insulating varnish to the surface of the conductor portion and a baking step of baking the applied insulating varnish.
In the coating step, the insulating varnish is applied so that the thickness in the thickness direction is thinner than the thickness in the width direction of the rectangular wire. 請求項１または２に記載した回転電機の製造方法であって、
前記界磁コイルは、前記平角線を幅方向に所定数巻回した後、前記界磁コイルの層方向に圧縮することで、層方向のコイル厚さが所定の寸法に調整されることを特徴とする回転電機の製造方法。 A method of manufacturing a rotating electrical machine according to claim 1 or 2,
In the field coil, the coil thickness in the layer direction is adjusted to a predetermined dimension by compressing in the layer direction of the field coil after winding the rectangular wire in the width direction for a predetermined number of turns. A method of manufacturing a rotating electrical machine.
JP2007100992A 2007-04-06 2007-04-06 Rotary electric machine Pending JP2008259371A (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010183662A (en) * 2009-02-03 2010-08-19 Nidec Shibaura Corp Stator and motor
WO2014050164A1 (en) * 2012-09-26 2014-04-03 三菱電機株式会社 Electric machine
US20150048710A1 (en) * 2012-04-07 2015-02-19 Traugott Weller Method for producing rotating electrical machines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010183662A (en) * 2009-02-03 2010-08-19 Nidec Shibaura Corp Stator and motor
US20150048710A1 (en) * 2012-04-07 2015-02-19 Traugott Weller Method for producing rotating electrical machines
US9614423B2 (en) * 2012-04-07 2017-04-04 Traugott Weller Method for producing rotating electrical machines
WO2014050164A1 (en) * 2012-09-26 2014-04-03 三菱電機株式会社 Electric machine
JPWO2014050164A1 (en) * 2012-09-26 2016-08-22 三菱電機株式会社 Electric machine
US9831734B2 (en) 2012-09-26 2017-11-28 Mitsubishi Electric Corporation Electric machine

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