JPWO2018047839A1 - Stator for rotating electrical machine and manufacturing method thereof - Google Patents

Stator for rotating electrical machine and manufacturing method thereof Download PDF

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JPWO2018047839A1
JPWO2018047839A1 JP2018538428A JP2018538428A JPWO2018047839A1 JP WO2018047839 A1 JPWO2018047839 A1 JP WO2018047839A1 JP 2018538428 A JP2018538428 A JP 2018538428A JP 2018538428 A JP2018538428 A JP 2018538428A JP WO2018047839 A1 JPWO2018047839 A1 JP WO2018047839A1
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stator
magnetic pole
rotating electrical
electrical machine
iron
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JP6811781B2 (en
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智史 箱田
智史 箱田
大輔 司城
大輔 司城
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Mitsubishi Electric Corp
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H02K15/095—Forming windings by laying conductors into or around core parts by laying conductors around salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure

Abstract

回転電機のステータにおいて、複数のティースを直線状に展開した状態で巻線作業をする場合には、隣接するティース間に十分な空間を確保できないという問題があった。そこで、この発明に係る回転電機のステータは、複数個の磁極片と、該磁極片の各々に隣接する複数個の鉄片とを備え、前記磁極片は、前記複数個の磁極片と前記複数個の鉄片とで環状を形成した場合の外周に沿って配置されたバックヨーク部と、該バックヨーク部から中心方向に突出したティース部とを有し、前記鉄片は、隣接する磁極片の前記バックヨーク部の周方向端部において回動可能に連結されている。In a stator of a rotating electrical machine, when a winding operation is performed in a state where a plurality of teeth are linearly developed, there is a problem that a sufficient space cannot be secured between adjacent teeth. Accordingly, a stator of a rotating electrical machine according to the present invention includes a plurality of magnetic pole pieces and a plurality of iron pieces adjacent to each of the magnetic pole pieces, and the magnetic pole pieces include the plurality of magnetic pole pieces and the plurality of magnetic pole pieces. A back yoke portion disposed along the outer periphery when the ring is formed with an iron piece, and a tooth portion protruding in the center direction from the back yoke portion, and the iron piece includes the back of the adjacent magnetic pole piece. The yoke portion is rotatably connected at a circumferential end portion.

Description

この発明は、回転電機のステータ、および、その製造方法に関するものである。   The present invention relates to a stator for a rotating electrical machine and a method for manufacturing the same.

従来から、バックヨーク部と該バックヨーク部から突出したティース部とを備えた積層鉄心からなる磁極片にコイルが巻きつけられた状態で円環状に配置されて、ステータを構成し、これに出力軸を有するロータとを組み合わせて形成されたモータが知られている。   Conventionally, a stator is formed by arranging a coil around a magnetic pole piece composed of a laminated iron core having a back yoke portion and a teeth portion protruding from the back yoke portion, and outputs to this. A motor formed by combining a rotor having a shaft is known.

このような磁極片にコイルを効率的に巻きつけることは重要であり、さまざまな技術が開示されている。   It is important to efficiently wind a coil around such a pole piece, and various techniques have been disclosed.

このような技術の一つとして、折曲部をバックヨークのティースの基端部両側に対応する部位に設け、複数のティースを有する帯状のバックヨークを、このバックヨークに設けられた折曲部において折り曲げることで環状に変形して電動機のステータコアを形成することで、各磁極片に対し、コイルを切断せずに連続して巻き付けることができるものがある。（例えば、特許文献１参照）。   As one of such technologies, a bent portion is provided in a portion corresponding to both sides of the base end portion of the back yoke teeth, and a belt-like back yoke having a plurality of teeth is provided on the back yoke. In some cases, the stator core of the electric motor is formed by being bent in the above-described manner, so that the coil can be continuously wound around each pole piece without cutting the coil. (For example, refer to Patent Document 1).

特許文献１の技術では、複数のティースを逆反り状（ティースが外側を向き、フライヤと対向する状態）に展開した状態で巻線作業をすることができるため、巻線作業をしているティースと隣接するティースをフライヤの先端が干渉しない位置に配置することができ、コイルを整列に巻きやすくなる。   In the technique of Patent Document 1, the winding work can be performed in a state where a plurality of teeth are developed in a reverse warped state (a state where the teeth face outward and face the flyer). Teeth adjacent to each other can be disposed at a position where the tip of the flyer does not interfere, and the coil is easily wound in alignment.

特開平１１−２６２２０３号公報Japanese Patent Laid-Open No. 11-262203

しかしながら、上記特許文献１では、例えば、複数のティースを直線状に展開した状態で巻線作業をする場合には、隣接するティース間に十分な空間を確保できない。また、円弧上のバックヨークの折曲部付近が、フライヤの先端部分と干渉しないようにしなければならないため、ティースに巻線する際に、巻線機の作動範囲がバックヨークにより大きな制約を受けるという問題があった。   However, in Patent Document 1, for example, when a winding operation is performed in a state where a plurality of teeth are developed linearly, a sufficient space cannot be secured between adjacent teeth. In addition, since the vicinity of the bent portion of the back yoke on the arc must not interfere with the tip of the flyer, the winding yoke operating range is greatly restricted by the back yoke when winding on the teeth. There was a problem.

この発明に係る回転電機のステータは、複数個の磁極片と、該磁極片の各々に隣接する複数個の鉄片とを備え、前記磁極片は、前記複数個の磁極片と前記複数個の鉄片とで環状を形成した場合の外周に沿って配置されたバックヨーク部と、該バックヨーク部から中心方向に突出したティース部とを有し、前記鉄片は、隣接する磁極片の前記バックヨーク部の周方向端部において回動可能に連結されているものである。   A stator of a rotating electrical machine according to the present invention includes a plurality of magnetic pole pieces and a plurality of iron pieces adjacent to each of the magnetic pole pieces, and the magnetic pole pieces include the plurality of magnetic pole pieces and the plurality of iron pieces. And a teeth portion projecting in the center direction from the back yoke portion, and the iron piece is the back yoke portion of the adjacent magnetic pole piece. Are connected so as to be rotatable at the circumferential end.

本発明によれば、複数のティースを直線状に展開した状態で巻線作業を行う場合に、隣接するティース間に十分な空間が確保でき、巻線機の作動範囲を大きくとることができるという効果がある。   According to the present invention, when the winding work is performed in a state where a plurality of teeth are expanded in a straight line, a sufficient space can be secured between adjacent teeth, and the operating range of the winding machine can be increased. effective.

この発明の実施の形態１に係る回転電機のステータの構造を示す図である。It is a figure which shows the structure of the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機のステータのＡ−Ｂでの断面構造を示す図である。It is a figure which shows the cross-section in AB of the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機のステータの他の構造を示す図である。It is a figure which shows the other structure of the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. 薄肉部で回動可能に連結された磁極片と鉄片とを直線状に展開したときの図である。It is a figure when the magnetic pole piece and iron piece which were connected rotatably by the thin part are expand | deployed linearly. この発明の実施の形態１に係る回転電機のステータにおいて、帯状の電磁鋼板から鋼板片を板取りする場合の概略図である。In the stator of the rotary electric machine which concerns on Embodiment 1 of this invention, it is the schematic in the case of stripping a steel plate piece from a strip-shaped electromagnetic steel plate. この発明の実施の形態１に係る回転電機のステータの自動巻線機の一部を示す概略図である。It is the schematic which shows a part of stator automatic winding machine of the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機のステータの自動巻線機の一部の断面を示す概略図である。It is the schematic which shows the one part cross section of the automatic winding machine of the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. 巻線を施し終えた後に、ステータを円環状に折り曲げて変形させる場合を示した概略図である。It is the schematic which showed the case where a stator is bend | folded and deform | transformed into an annular | circular shape after finishing winding. この発明の実施の形態１に係る回転電機のステータの構造を示す図である。It is a figure which shows the structure of the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機のステータの構造を示す図である。It is a figure which shows the structure of the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機のステータの構造を示す図である。It is a figure which shows the structure of the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る回転電機のステータの構造を示す図である。It is a figure which shows the structure of the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態２に係る回転電機のステータの構造を示す図である。It is a figure which shows the structure of the stator of the rotary electric machine which concerns on Embodiment 2 of this invention. この発明の実施の形態２に係る回転電機のステータを直線状に展開したときの図である。It is a figure when the stator of the rotary electric machine which concerns on Embodiment 2 of this invention is expand | deployed linearly. 巻線を施し終えた後に、ステータを円環状に折り曲げて変形させる場合を示した概略図である。It is the schematic which showed the case where a stator is bend | folded and deform | transformed into an annular | circular shape after finishing winding. 巻線を施し終えた後に、ステータを円環状に折り曲げて変形させる場合を示した概略図である。It is the schematic which showed the case where a stator is bend | folded and deform | transformed into an annular | circular shape after finishing winding. この発明の実施の形態２に係る他の回転電機のステータを示す概略図である。It is the schematic which shows the stator of the other rotary electric machine which concerns on Embodiment 2 of this invention. この発明の実施の形態３に係る回転電機のステータの巻線機を示した概略図である。It is the schematic which showed the winding machine of the stator of the rotary electric machine which concerns on Embodiment 3 of this invention. この発明の実施の形態４に係る回転電機のステータを示す概略図である。It is the schematic which shows the stator of the rotary electric machine which concerns on Embodiment 4 of this invention. この発明の実施の形態４に係る回転電機のステータの断面を示す概略図である。It is the schematic which shows the cross section of the stator of the rotary electric machine which concerns on Embodiment 4 of this invention. この発明の実施の形態５に係る回転電機のステータを示す概略図である。It is the schematic which shows the stator of the rotary electric machine which concerns on Embodiment 5 of this invention. 鉄片の肉厚を薄くした場合を示す図である。It is a figure which shows the case where the thickness of an iron piece is made thin. 鉄片の肉厚を薄くした場合を示す図である。It is a figure which shows the case where the thickness of an iron piece is made thin. 鉄片の円弧の曲率を大きくとり、極端なアーチ状にした場合を示す図である。It is a figure which shows the case where the curvature of the circular arc of an iron piece is taken large and it is made an extreme arch shape. 鉄片の円弧の曲率を大きくとり、極端なアーチ状にした場合を示す図である。It is a figure which shows the case where the curvature of the circular arc of an iron piece is taken large and it is made an extreme arch shape. この発明の実施の形態１に係る他の回転電機のステータの構成を示す図である。It is a figure which shows the structure of the stator of the other rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る他の回転電機のステータの構成を示す図である。It is a figure which shows the structure of the stator of the other rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る他の回転電機のステータの自動巻線機の一部を示す概略図である。It is the schematic which shows a part of automatic winding machine of the stator of the other rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態６に係る回転電機のステータの構造を示す図である。It is a figure which shows the structure of the stator of the rotary electric machine which concerns on Embodiment 6 of this invention. この発明の実施の形態７に係る回転電機のステータの構造を示す図である。It is a figure which shows the structure of the stator of the rotary electric machine which concerns on Embodiment 7 of this invention.

実施の形態１．
次に、図面を用いて、この発明の実施の形態を説明する。以下の図面の記載において、同一又は類似の部分には、同一又は類似の符号を付している。但し、図面は模式的なものであり、各寸法の比率等は現実のものとは異なることに留意すべきである。したがって、具体的な寸法等は以下の説明を参酌して判断すべきものである。また、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれていることは勿論である。Embodiment 1 FIG.
Next, embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

図１は、この発明の実施の形態１に係る回転電機のステータの構造を示す図である。図２は、この発明の実施の形態１に係る回転電機のステータのＡ−Ｂでの断面構造を示す図である。図において、回転電機のステータ１は、複数個の磁極片２と、磁極片２に隣接し、各磁極片間に設けられた複数個の鉄片３とを有する。   1 is a diagram showing a structure of a stator of a rotating electrical machine according to Embodiment 1 of the present invention. FIG. 2 is a diagram showing a cross-sectional structure at AB of the stator of the rotating electrical machine according to the first embodiment of the present invention. In the figure, a stator 1 of a rotating electrical machine has a plurality of magnetic pole pieces 2 and a plurality of iron pieces 3 adjacent to the magnetic pole pieces 2 and provided between the magnetic pole pieces.

磁極片２は、略Ｔ字状の薄板の電磁鋼板を回転電機の回転中心をとおる出力軸Ｖ−Ｗの方向に沿って複数枚積層した構造であり、図１のように、回転電機のステータ１を環状（円柱状又は円環状と記載する場合もある）の構成とした場合、ここでは、図に示されるような略四角形（四角柱）の形状、略八角形（八角柱）の形状、又は、その他の角柱形状も、環状、円環状もしくは円柱状という表現にも含まれるものとして、以下記載する。   The pole piece 2 has a structure in which a plurality of thin T-shaped electromagnetic steel plates are laminated along the direction of the output shaft VW passing through the rotation center of the rotating electrical machine. As shown in FIG. In the case where 1 is configured in an annular shape (may be described as a columnar shape or an annular shape), here, a substantially quadrangular (quadrangular prism) shape, an approximately octagonal (octagonal prism) shape, as shown in the figure, Alternatively, other prismatic shapes are also described below as being included in the expression of annular, annular or cylindrical.

磁極片２は、出力軸Ｖ−Ｗに対して垂直に配置され、回転電機のステータ１を環状の構成とした場合に、外周に沿って配置され、外周部の一部を構成し、ほぼ平坦な主面が外周面の一部を形成するバックヨーク部４と、バックヨーク部４から回転中心の中心方向に突出し、内側端面部５１が出力軸と対向するよう配置されたティース部５とを含んで構成される。ここでは、磁極片２は、薄板の電磁鋼板を回転電機の出力軸方向に沿って複数枚積層した構造としたが、回転電機の出力軸方向の断面が略Ｔ字状である一体成型品でもかまわない。なお、ティース部５は、バックヨーク部４の中央から垂直に突出する形で形成されるが、多少ずれてもかまわない。また、バックヨーク部４は、ほぼ平坦な主面が外周面の一部を形成するとしたが、ステータを収納する成型品が角柱形状を納めるのに納まりが良いという理由からであって、ステータを収納する成型品の形状によっては、外周面が平面ではなく曲面であってもかまわない。   The pole piece 2 is arranged perpendicularly to the output shaft V-W, and when the stator 1 of the rotating electrical machine has an annular configuration, the pole piece 2 is arranged along the outer periphery, constitutes a part of the outer periphery, and is substantially flat. A back yoke portion 4 whose main surface forms a part of the outer peripheral surface, and a teeth portion 5 that protrudes from the back yoke portion 4 toward the center of the rotation center and that the inner end surface portion 51 faces the output shaft. Consists of including. Here, the magnetic pole piece 2 has a structure in which a plurality of thin electromagnetic steel plates are laminated along the output axis direction of the rotating electrical machine. However, the pole piece 2 may be an integrally molded product having a substantially T-shaped cross section in the output axis direction of the rotating electrical machine. It doesn't matter. In addition, although the teeth part 5 is formed in the shape protruded perpendicularly | vertically from the center of the back yoke part 4, it may shift | deviate a little. In addition, the back yoke portion 4 has a substantially flat main surface that forms part of the outer peripheral surface, but because the molded product that houses the stator is good enough to accommodate the prismatic shape, Depending on the shape of the molded product to be stored, the outer peripheral surface may be a curved surface instead of a flat surface.

鉄片３は、幅を有する略円弧状の薄板の電磁鋼板を回転電機の出力軸Ｖ−Ｗの方向に沿って複数枚積層した構造であり、複数個の磁極片２のバックヨーク部４に隣接し、それらの間を接続するように配置される。   The iron piece 3 has a structure in which a plurality of substantially arc-shaped electromagnetic steel plates having a width are stacked along the direction of the output axis VW of the rotating electrical machine, and is adjacent to the back yoke portion 4 of the plurality of magnetic pole pieces 2. And arranged to connect between them.

なお、ここでは、鉄片３は、薄板の電磁鋼板を回転電機の出力軸方向に沿って複数枚積層した構造としたが、積層構造を持たない一体成型品でもかまわない。また、鉄片３は、幅を有する略円弧状の形状としたが、平坦な面を有する四角柱、又は、回転電機のステータ１が環状を構成した場合の外周面又は内周面のどちらか一方が平面形状であってもかまわない。平坦な面を有する四角柱とした場合には、回転電機のステータの形状は、図３で示すような、ほぼ八角柱形状となる。   Here, the iron piece 3 has a structure in which a plurality of thin electromagnetic steel plates are laminated along the output shaft direction of the rotating electrical machine, but may be an integrally molded product having no laminated structure. Moreover, although the iron piece 3 was made into the substantially arc-shaped shape which has a width | variety, either one of a square pillar which has a flat surface, or the outer peripheral surface or inner peripheral surface in case the stator 1 of a rotary electric machine comprises cyclic | annular form. May have a planar shape. In the case of a quadrangular prism having a flat surface, the shape of the stator of the rotating electrical machine is substantially an octagonal prism shape as shown in FIG.

鉄片３は、隣接する磁極片２のバックヨーク部４の出力軸Ｖ−Ｗを中心とする周方向端部において、薄肉部６で回動可能に連結されている。なお、ここでいう回動可能には、折り曲げ可能な場合も含まれるものとする。   The iron piece 3 is rotatably connected by a thin portion 6 at an end portion in the circumferential direction around the output shaft VW of the back yoke portion 4 of the adjacent magnetic pole piece 2. In addition, the case where it can be bent is also included in the pivotable state here.

ただし、複数の磁極片２のうち、少なくとも１つの磁極片２のバックヨーク部４の片端は連結されておらず、例えば、一方に凸部７、もう一方に凹部８を設けて、展開可能に突き合わされて接続されている。なお、図１では、凸部及び凹部が、一か所設けられた構成を示しているが、一か所に限られず、二か所又は三か所であってもかまわない。また、バックヨーク部の端部と、鉄片の端部に設けられる凸部と凹部は、嵌合するような構造であれば、どちらに凸部を設けても、どちらに凹部を設けてもかまわない。   However, one end of the back yoke portion 4 of at least one magnetic pole piece 2 among the plurality of magnetic pole pieces 2 is not connected. For example, a convex portion 7 is provided on one side, and a concave portion 8 is provided on the other side so that it can be developed. They are connected to each other. In FIG. 1, the configuration in which the convex portion and the concave portion are provided at one place is shown, but the configuration is not limited to one place, and may be two places or three places. Also, the protrusions and recesses provided at the end of the back yoke part and the end of the iron piece may be provided with either a protrusion or a recess as long as it is a structure that fits. Absent.

磁極片２のティース部５にはコイル１０が巻回されステータ１を構成するが、磁極片２とコイル１０との間の絶縁を確保するため、磁極片２とコイル１０との間には成型部材であるインシュレータ９が配置されている。   A coil 10 is wound around the tooth portion 5 of the pole piece 2 to constitute the stator 1. However, in order to ensure insulation between the pole piece 2 and the coil 10, molding is performed between the pole piece 2 and the coil 10. An insulator 9 as a member is arranged.

ここで、凸部７と凹部８とが付き合わされ、ティース部５が出力軸（回転中心）方向を向くように複数の磁極片２が一体化されステータ１を構成した状態で、バックヨーク部４と鉄片３との継ぎ目１１、つまり、薄肉部６での連結面の延長面１２は、出力軸Ｖ−Ｗである回転中心Ｏを通らない構成となる。このとき、鉄片３を挟んで隣接している薄肉部６での連結面の延長面１２が交わってできる交線Ｐは、回転中心Ｏから外周方向に離れた位置となる。   Here, in a state where the plurality of magnetic pole pieces 2 are integrated and the stator 1 is configured such that the convex portion 7 and the concave portion 8 are brought together and the tooth portion 5 faces the output shaft (rotation center) direction. The joint 11 between the iron piece 3 and the extended surface 12 of the connecting surface in the thin portion 6 does not pass through the rotation center O that is the output shaft V-W. At this time, the intersection line P formed by the extension surfaces 12 of the connecting surfaces at the adjacent thin portions 6 across the iron piece 3 is located away from the rotation center O in the outer peripheral direction.

図４は、薄肉部で回動可能に連結された磁極片と鉄片とを直線状に展開した状態を示す図である。ここでは、ティース部５にインシュレータ９を介してコイル１０が巻回された状態を示している。図からわかるように、バックヨーク部４のほぼ平坦な主面４２、ここでは、回転電機のステータを円環状にした場合には外周面の一部を形成し、回転電機のステータを直線状に展開した場合には磁極片の上面となる面は、ほぼ平坦である。磁気抵抗が増加することで鉄損が増えてモータの効率が下がることを避けるために、バックヨーク部４の厚さは、ほぼ一定となるために、図４で破線として示したバックヨーク部４とティース部５の境界で巻線を施す部分Ｃには、奥まったくぼみ形状を作らないように構成されている。   FIG. 4 is a diagram showing a state in which a magnetic pole piece and an iron piece that are rotatably connected to each other at a thin wall portion are linearly developed. Here, a state where the coil 10 is wound around the tooth portion 5 via the insulator 9 is shown. As can be seen from the figure, the substantially flat main surface 42 of the back yoke portion 4, here, when the stator of the rotating electrical machine is annular, a part of the outer peripheral surface is formed, and the stator of the rotating electrical machine is linearly formed. When unfolded, the upper surface of the pole piece is substantially flat. The thickness of the back yoke portion 4 is substantially constant in order to avoid an increase in magnetic resistance and a decrease in motor efficiency due to an increase in magnetic resistance. Therefore, the back yoke portion 4 shown as a broken line in FIG. The portion C where the winding is applied at the boundary between the teeth portion 5 and the teeth portion 5 is configured so as not to form a hollow shape at all.

図では、バックヨーク部４の両端部の下端４３が、隣接する鉄片３の接続面の下端３２の位置より下、つまり、ティース部５側に位置している。言い換えれば、一点鎖線で示したバックヨーク部４の中心線を通る中心点４１は、鉄片３の中心点３１より下、つまり、ティース部５側に位置している。そのため、巻線を施す際に、鉄片３が巻線機のフライヤの先端から遠ざかる位置に展開されるため、巻線機のフライヤの先端が旋回するために十分な領域が確保できる。   In the figure, the lower ends 43 at both ends of the back yoke portion 4 are located below the position of the lower end 32 of the connecting surface of the adjacent iron piece 3, that is, on the teeth portion 5 side. In other words, the center point 41 that passes through the center line of the back yoke portion 4 indicated by the one-dot chain line is located below the center point 31 of the iron piece 3, that is, on the teeth portion 5 side. Therefore, when the winding is performed, the iron piece 3 is deployed at a position away from the tip of the flyer of the winding machine, so that a sufficient area can be secured for the tip of the flyer of the winding machine to turn.

なお、図２７に示すように、バックヨーク部４の両端部の下端４３が、隣接する鉄片３の接続面の下端３２の位置と一致するよう展開、つまり、バックヨーク部４と鉄片３とが一直線となるように展開した場合でも、隣接するティース間に十分な空間は確保できるが、巻線機のフライヤの先端が旋回する際に鉄片３と干渉するまでの距離が、図４で示したように展開した場合に比べて少ないため、図４に示した構造の方が有利となる。   In addition, as shown in FIG. 27, the lower end 43 of both ends of the back yoke part 4 is developed so as to coincide with the position of the lower end 32 of the connecting surface of the adjacent iron piece 3, that is, the back yoke part 4 and the iron piece 3 are Even when deployed so as to be in a straight line, a sufficient space can be secured between adjacent teeth, but the distance until the tip of the flyer of the winding machine interferes with the iron piece 3 when turning is shown in FIG. Therefore, the structure shown in FIG. 4 is more advantageous.

図５は、この発明の実施の形態１に係る回転電機のステータにおいて、帯状の電磁鋼板から鋼板片を板取りする場合の概略図である。鋼板片１４は、磁極片２のバックヨーク部４の長手方向と鉄片３の長手方向とが一致するような形状である。鋼板片１４は、磁極片２のバックヨーク部４の長手方向と鉄片３の長手方向とが電磁鋼板１３の矢印で示した送り方向と一致し、電磁鋼板１３の送り方向に対して垂直方向に２個が対向する位置で、一方の隣接するティース間に、他方のティースが収まる千鳥配置となるよう並列配置され、打ち抜かれる。   FIG. 5 is a schematic view when a steel plate piece is stripped from a strip-shaped electromagnetic steel plate in the stator of the rotary electric machine according to Embodiment 1 of the present invention. The steel plate piece 14 has a shape in which the longitudinal direction of the back yoke portion 4 of the magnetic pole piece 2 and the longitudinal direction of the iron piece 3 coincide. In the steel plate piece 14, the longitudinal direction of the back yoke portion 4 of the magnetic pole piece 2 and the longitudinal direction of the iron piece 3 coincide with the feeding direction indicated by the arrow of the electromagnetic steel plate 13, and are perpendicular to the feeding direction of the electromagnetic steel plate 13. In a position where the two teeth face each other, they are arranged in parallel so as to form a zigzag arrangement in which the other teeth are accommodated between the adjacent teeth.

図５において、二つの鋼板片１４は、第一の鋼板片１４１と第二の鋼板片１４２とが対向するように千鳥配置され、第一の鋼板片１４１の有する隣接するティース部５２間に、第二の鋼板片１４２が有するティース部５３が収まるように配置される。回転電機のステータ１は、帯状の電磁鋼板１３から打ち抜かれた鋼板片１４を所定枚数、カシメにより積層して構成される。その後、絶縁材から成るインシュレータ９が、磁極片２のティース部５の外周に一体成型される。ここで、バックヨーク部、鉄片、及び、ティース部という場合は、鋼板片のうち、ステータを構成した場合にバックヨーク部、鉄片、及び、ティース部に対応する部分を示す場合もある。   In FIG. 5, the two steel plate pieces 14 are staggered so that the first steel plate piece 141 and the second steel plate piece 142 face each other, and between the adjacent tooth portions 52 of the first steel plate piece 141, It arrange | positions so that the teeth part 53 which the 2nd steel plate piece 142 has may be settled. A stator 1 of a rotating electrical machine is configured by laminating a predetermined number of steel plate pieces 14 punched from a strip-shaped electromagnetic steel plate 13 by caulking. Thereafter, an insulator 9 made of an insulating material is integrally formed on the outer periphery of the tooth portion 5 of the pole piece 2. Here, in the case of the back yoke part, the iron piece, and the tooth part, the part corresponding to the back yoke part, the iron piece, and the tooth part may be shown in the steel plate piece when the stator is configured.

図６は、この発明の実施の形態１に係る回転電機のステータの自動巻線機の一部を示す概略図である。自動巻線機１５は、ステータ１を固定するための固定治具１６と、磁極片２のティース部５にコイル１０を巻回するためのフライヤ１７を有する。   6 is a schematic view showing a part of a stator automatic winding machine for a rotating electrical machine according to Embodiment 1 of the present invention. The automatic winding machine 15 includes a fixing jig 16 for fixing the stator 1 and a flyer 17 for winding the coil 10 around the teeth portion 5 of the magnetic pole piece 2.

固定治具１６は、ベース部１８、押さえ板１９、ネジ２０、及び、ガイド用ピン２１を含んで構成される。ステータ１は、磁極片２が有するバックヨーク部４の長手方向と鉄片３の長手方向が一致するような形状でベース部１８の軸方向端面３６に設置され、図７で示されたＸ−Ｙ断面からわかるように、鉄片３のステータ径方向外側の端面３７とベース部１８を面接触させることで所定の位置に固定される。   The fixing jig 16 includes a base portion 18, a pressing plate 19, screws 20, and guide pins 21. The stator 1 is installed on the axial end surface 36 of the base portion 18 so that the longitudinal direction of the back yoke portion 4 of the magnetic pole piece 2 and the longitudinal direction of the iron piece 3 coincide with each other, and is shown in FIG. As can be seen from the cross section, the end face 37 of the iron piece 3 on the outer side in the radial direction of the stator and the base portion 18 are brought into surface contact and fixed in place.

押さえ板１９は、ステータ１をベース部１８に出力軸方向に挟んで固定するためのものであり、押さえ板１９とベース部１８とはネジ２０で固定される。固定する構造はネジに限らず、ボルトとナットを用いて固定しても、ハトメで固定してもよい。ガイド用ピン２１は、巻線時、各磁極片２のティース部５に巻回されるコイル１０を接続する渡り線２２をガイドするためのものであり、磁極片２と鉄片３とを接続する折り曲げ部の回転中心付近に位置するようにベース部１８に設置される。   The holding plate 19 is for fixing the stator 1 to the base portion 18 in the output axis direction, and the holding plate 19 and the base portion 18 are fixed by screws 20. The structure to be fixed is not limited to screws, and may be fixed using bolts and nuts, or may be fixed by eyelets. The guide pin 21 is for guiding the crossover wire 22 that connects the coil 10 wound around the tooth portion 5 of each magnetic pole piece 2 during winding, and connects the magnetic pole piece 2 and the iron piece 3. It is installed on the base portion 18 so as to be positioned near the rotation center of the bent portion.

フライヤ１７は、先端部が描く軌跡Ｂが磁極片２のティース部５の中心軸、ここでは、ティース部５について長手方向でティース部５の重心を通る軸とほぼ一致するように配置され、長手方向と一致する方向Ｃに沿ってスライド動作する。また、バックヨーク部４の長手方向と一致する方向Ｄにも沿ってスライド動作する。   The flyer 17 is disposed so that the locus B drawn by the tip portion substantially coincides with the central axis of the tooth portion 5 of the pole piece 2, here the axis passing through the center of gravity of the tooth portion 5 in the longitudinal direction with respect to the tooth portion 5. It slides along a direction C that coincides with the direction. Further, the sliding movement is performed along the direction D that coincides with the longitudinal direction of the back yoke portion 4.

一方の磁極片２のティース部５への巻線作業が終わった後、フライヤ１７を方向Ｄにスライド動作させ、巻線していない隣接する他方の磁極片２のティース部５の中心軸とフライヤ１７の回転軸Ｂがほぼ一致する位置まで移動させる。このとき、一方の磁極片２のティース部５に巻回したコイル１０の巻き終わり部分を切断することなく、これを渡り線２２として、固定治具１６が有するガイド用ピン２１の外側に沿わせ、続いて、他方の磁極片２のティース部５に対して、一方の磁極片２のティース部５に巻いた方向とは逆方向に巻線を施す。このようにして、順次、巻線していない磁極片２のティース部５に巻線作業を施していく。   After the work of winding the magnetic pole piece 2 on the tooth portion 5 is finished, the flyer 17 is slid in the direction D, and the center axis and the flyer of the tooth portion 5 of the other magnetic pole piece 2 adjacent to each other are not wound. The rotation axis B is moved to a position where the rotation axes B substantially coincide with each other. At this time, the winding end portion of the coil 10 wound around the tooth portion 5 of one of the pole pieces 2 is not cut, and this is used as a connecting wire 22 along the outside of the guide pin 21 included in the fixing jig 16. Subsequently, winding is applied to the tooth portion 5 of the other magnetic pole piece 2 in the direction opposite to the direction wound around the tooth portion 5 of the one magnetic pole piece 2. In this way, the winding work is sequentially performed on the teeth portion 5 of the pole piece 2 that is not wound.

図８は、巻線を施し終えた後に、ステータを環状に折り曲げて変形させる場合を示した概略図である。図において、各磁極片２のティース部５の自由端側の先端部を芯金２３に順次押し当て、ステータ１を巻線時の直線状から円環状に折り曲げていく。円環状に閉じる際に突き合わされる磁極片２と鉄片３との端面には、それぞれ凸部２４と凹部２５とが形成されており、周方向からの挿入により両端面が嵌合される。   FIG. 8 is a schematic view showing a case where the stator is bent into a ring shape and deformed after the winding is finished. In the figure, the free end of the tooth portion 5 of each magnetic pole piece 2 is sequentially pressed against the core metal 23, and the stator 1 is bent from a straight shape during winding to an annular shape. Convex portions 24 and concave portions 25 are respectively formed on the end faces of the magnetic pole piece 2 and the iron piece 3 that are abutted when closed in an annular shape, and both end faces are fitted by insertion from the circumferential direction.

嵌合後、ステータ１の外周側から、例えば、ＴＩＧ（タングステン・イナート・ガス）溶接のような溶接手段を用いて、突き合わせた端面同士を固着して一体化するように成形している。凸部２４と凹部２５とを突き合わせ面に設けることで、突き合わせたときの周方向のガタを抑制でき、内径真円度を向上できる。なお、磁極片又は鉄片の一方に凸部を設け、他方に凹部を設けるような構成であれば、特にどちらに凸部を設けるか凹部を設けるかは決められていない。   After fitting, from the outer peripheral side of the stator 1, for example, using a welding means such as TIG (tungsten inert gas) welding, the butted end faces are fixed and integrated. By providing the convex portion 24 and the concave portion 25 on the abutting surface, it is possible to suppress the backlash in the circumferential direction when abutting, and to improve the inner diameter roundness. In addition, as long as it is a structure which provides a convex part in one of a magnetic pole piece or an iron piece, and provides a recessed part in the other, it is not determined in particular which will provide a convex part or a recessed part.

図２６は、この発明の実施の形態１に係る他の回転電機のステータの構成を示す図である。図において、磁極片２６は、略Ｔ字状の薄板の電磁鋼板を回転電機の出力軸方向に沿って複数枚積層する構造であり、出力軸に対して径方向に垂直に構成された部分であるティース部５と、ティース部５に対し周（回転）方向に垂直に構成され、外周面の一部を構成するバックヨーク部４とを含んで構成される。   FIG. 26 is a diagram showing a configuration of a stator of another rotating electrical machine according to the first embodiment of the present invention. In the drawing, the magnetic pole piece 26 is a structure in which a plurality of substantially T-shaped electromagnetic steel plates are laminated along the output shaft direction of the rotating electrical machine, and is a portion configured to be perpendicular to the output shaft in the radial direction. A certain tooth portion 5 and a back yoke portion 4 that is perpendicular to the tooth portion 5 in the circumferential (rotating) direction and that constitutes a part of the outer circumferential surface are included.

鉄片２７は、幅を有する略円弧状の薄板の電磁鋼板を回転電機の出力軸方向に沿って複数枚積層した構造であり、複数個の磁極片２のバックヨーク部４間を接続するように配置される。   The iron piece 27 has a structure in which a plurality of substantially arc-shaped thin electromagnetic steel plates having a width are stacked along the output axis direction of the rotating electrical machine, and the back yoke portions 4 of the plurality of magnetic pole pieces 2 are connected to each other. Be placed.

磁極片２６と鉄片２７とは、交互に円環状に配置されており、互いに隣接するバックヨーク部４の外径方向端部において、薄肉部６により折り曲げ可能に連結されている。磁極片２６のバックヨーク部４と鉄片２７の径方向端面が互いに突き合わされることで継ぎ目２９が形成され、継ぎ目２９の延長線３０はステータ１１１の中心Ｏを通る。ステータ１１１が有する全ての継ぎ目２９の延長線３０は、ステータ１１１の中心Ｏで交わる。   The magnetic pole pieces 26 and the iron pieces 27 are alternately arranged in an annular shape, and are connected to each other at the end portions in the outer diameter direction of the back yoke portions 4 adjacent to each other so that they can be bent. The seam 29 is formed by the back yoke portion 4 of the magnetic pole piece 26 and the radial end surfaces of the iron piece 27 abutting each other, and the extension line 30 of the seam 29 passes through the center O of the stator 111. The extension lines 30 of all the seams 29 of the stator 111 intersect at the center O of the stator 111.

図２７は、図２６で示した他の回転電機のステータを直線状に展開した場合の概略図である。図に示すように、磁極片２６のバックヨーク部４の両端部の下端が、隣接する鉄片２７の接続面の下端の位置と一致、つまり、磁極片２６のバックヨーク部４と鉄片２７とが、段差のないほぼ同一直線状に配置されている。   FIG. 27 is a schematic view when the stator of the other rotating electrical machine shown in FIG. 26 is developed linearly. As shown in the figure, the lower ends of both end portions of the back yoke portion 4 of the magnetic pole piece 26 coincide with the positions of the lower ends of the connecting surfaces of the adjacent iron pieces 27, that is, the back yoke portion 4 of the magnetic pole piece 26 and the iron piece 27 are They are arranged in almost the same straight line without steps.

図２８は、図２６で示した他の回転電機のステータに巻線する場合の概略図である。図２７に示したように、他の回転電機のステータを直線状に展開した場合には、磁極片２６のバックヨーク部４と鉄片２７が、ほぼ一直線上に展開され、鉄片２７が少し円弧形状を有するために、フライヤ１７の先端を逃すのに、ほんの少しの余裕はあるが、磁極片２６のティース部５の固定端側（バックヨーク部４側）に巻線するのは、フライヤ１７の先端部の旋回面Ｑとバックヨーク部４が干渉するため、あまり余裕がない。ただし、隣接する磁極片２８間に鉄片２７が配置されていることから、フライヤ１７が旋回するのに十分な横方向の空間は確保されている。   FIG. 28 is a schematic diagram in the case of winding around the stator of another rotating electrical machine shown in FIG. As shown in FIG. 27, when the stator of another rotating electrical machine is expanded linearly, the back yoke portion 4 and the iron piece 27 of the magnetic pole piece 26 are expanded substantially in a straight line, and the iron piece 27 is slightly arc-shaped. In order to escape the tip of the flyer 17, there is a slight margin, but it is the winding of the flyer 17 that is wound around the fixed end side (back yoke portion 4 side) of the teeth portion 5 of the pole piece 26. Since the swiveling surface Q at the tip and the back yoke portion 4 interfere, there is not much room. However, since the iron piece 27 is disposed between the adjacent magnetic pole pieces 28, a sufficient lateral space is secured for the flyer 17 to turn.

この発明の実施の形態１に係る回転電機のステータは、図４に示すように、回転電機のステータを直線状に展開した場合には、機能的には、磁極片２のバックヨーク部４と同機能を有し、従来ならバックヨークとしてティースと一体成型されていた部分である鉄片３を磁極片２から分離して展開する構成とすることで、フライヤ１７の先端部が旋回する際に必要な領域を確保することが可能である。   As shown in FIG. 4, the stator of the rotating electrical machine according to the first embodiment of the present invention functionally has a back yoke portion 4 of the pole piece 2 when the stator of the rotating electrical machine is linearly expanded. Necessary when turning the tip of the flyer 17 by having the same function and the structure in which the iron piece 3 which is a part integrally formed with the teeth as a back yoke is separated from the magnetic pole piece 2 and deployed. It is possible to secure a sufficient area.

また、バックヨーク部４の主面４２、回転電機のステータを円環状にした場合には外周面の一部を形成し、回転電機のステータを直線状に展開した場合には磁極片の上面となる面がほぼ平坦であることから、巻線を施す部分、特にバックヨーク部４とティース部５との境界部分に切れ込みのある凹部を作らないことで、バックヨーク部４に干渉されることなく、フライヤ１７の先端部がティース部５の根元までしっかり届くように構成できる。   When the main surface 42 of the back yoke part 4 and the stator of the rotating electrical machine are annular, a part of the outer peripheral surface is formed, and when the stator of the rotating electrical machine is developed linearly, the upper surface of the pole piece Since the surface to be formed is substantially flat, it is possible to avoid interference with the back yoke portion 4 by not forming a notched recess in the portion where the winding is applied, particularly the boundary portion between the back yoke portion 4 and the tooth portion 5. The tip of the flyer 17 can be configured to reach the root of the teeth portion 5 firmly.

また、回転電機のステータを直線状に展開した場合に、鉄片３の継ぎ目１１部分の下端（回転電機のステータを円環状にした場合の出力軸側端部、回転電機のステータを直線状に展開した場合のティース側端部）が、磁極片２のバックヨーク部４の継ぎ目１１部分の下端に対して、常に上側に配置されている。そのため、フライヤ１７の先端部が旋回する際に、鉄片３と干渉するまでの距離に余裕ができ、磁極片２のティース部５の固定端側（バックヨーク部４側）に、より深く巻線することが可能となる。   Further, when the stator of the rotating electrical machine is linearly expanded, the lower end of the joint 11 portion of the iron piece 3 (the output shaft side end when the stator of the rotating electrical machine is annular, the stator of the rotating electrical machine is expanded linearly. The teeth side end portion in this case is always arranged on the upper side with respect to the lower end of the joint 11 portion of the back yoke portion 4 of the pole piece 2. Therefore, when the tip of the flyer 17 turns, there is a sufficient distance until it interferes with the iron piece 3, and the winding is deeper on the fixed end side (back yoke part 4 side) of the tooth portion 5 of the magnetic pole piece 2. It becomes possible to do.

フライヤ１７の先端部が旋回する際に、鉄片３と干渉するまでの距離を大きくとる他の方法として、図２２及び図２３で示したように、鉄片３５の肉厚を薄くする方法、又は、図２４及び図２５に示したように、鉄片３６の円弧の曲率を大きくとり、極端なアーチ状とする方法がある。前者の場合は、鉄片３５の肉厚を薄くすることにより、本発明の実施の形態１に係る回転電機のステータと比べて磁気抵抗が増加することで鉄損が増えてモータの効率が低下する。後者の場合も同様に磁路が長くなることにより、本発明の実施の形態１に係る回転電機のステータと比べて磁気抵抗が増加することで鉄損が増えてモータの効率が低下する。ただし、フライヤの先端部がティース部の根元までしっかり届くように構成できる点では、本発明の目的は達成される。   As another method of increasing the distance until the interference with the iron piece 3 when the tip of the flyer 17 turns, as shown in FIG. 22 and FIG. 23, the method of reducing the thickness of the iron piece 35, or As shown in FIG. 24 and FIG. 25, there is a method in which the curvature of the arc of the iron piece 36 is increased to form an extreme arch shape. In the former case, by reducing the thickness of the iron piece 35, the magnetic resistance increases as compared with the stator of the rotating electrical machine according to the first embodiment of the present invention, so that the iron loss increases and the motor efficiency decreases. . Similarly, in the latter case, the magnetic path becomes longer, so that the magnetic resistance increases as compared with the stator of the rotating electrical machine according to the first embodiment of the present invention, so that the iron loss increases and the efficiency of the motor decreases. However, the object of the present invention is achieved in that it can be configured so that the tip of the flyer can reach the root of the teeth portion firmly.

図９は、この発明の実施の形態１に係る回転電機のステータを構成する磁極片と鉄片との間の継ぎ目の間隔が均等ではないことを示す図である。磁極片２の両端の継ぎ目１１の下端部（ティース部５側端部）により形成される角度θ１よりも鉄片の両端の継ぎ目１１の下端部（ティース部５側端部）により形成される角度θ２が小さくなるように、磁極片２と鉄片３は配置されている。FIG. 9 is a diagram showing that the gaps between the magnetic pole pieces and the iron pieces constituting the stator of the rotary electric machine according to Embodiment 1 of the present invention are not uniform. The lower end of the two ends of the seam 11 of the pole piece 2 angle formed by the lower end portion of the seam 11 at both ends of the iron than the angle theta 1 formed by the (teeth 5 side end portion) (tooth portion 5 side end portion) as theta 2 is decreased, the pole piece 2 and the iron piece 3 is arranged.

図１０は、この発明の実施の形態１に係る回転電機のステータを直線状に展開した状態を示す図である。図からわかるように、ティース部５にコイル１０を出力軸側からバックヨーク側にかけてほぼ均等な厚さとなるよう巻き付ける際に、インシュレータ９のバックヨーク側の背面にティース部５のバックヨーク部４が過不足なく存在しているため、バックヨーク部４がインシュレータ９のバックヨーク側の背面を押す形となり、インシュレータ９のバックヨーク部４側への倒れこみを抑制できる。   FIG. 10 is a diagram showing a state where the stator of the rotating electrical machine according to the first embodiment of the present invention is developed linearly. As can be seen from the figure, when the coil 10 is wound around the tooth portion 5 so as to have a substantially uniform thickness from the output shaft side to the back yoke side, the back yoke portion 4 of the tooth portion 5 is formed on the back surface of the insulator 9 on the back yoke side. Since it exists without excess and deficiency, the back yoke portion 4 has a shape of pushing the back surface of the insulator 9 on the back yoke side, and the collapse of the insulator 9 toward the back yoke portion 4 can be suppressed.

一方、図１１及び図１２は、この発明の実施の形態１に係る回転電機のステータを構成する磁極片と鉄片との間の継ぎ目の間隔を均等にした場合を示す図である。磁極片２の両端の継ぎ目１１により形成される角度θ３と、鉄片３の両端の継ぎ目１１により形成される角度θ４とが一致するように配置されている。このとき、回転電機のステータを直線状に展開した状態でティース部５にコイル１０を巻き付ける際に、インシュレータ９のバックヨーク側の背面がティース部５のバックヨーク部４を超えて存在しているため、インシュレータ９のバックヨーク側の背面にバックヨーク部４が存在しない部分ができ、インシュレータ９のバックヨーク部４側への倒れこみが生じる可能性がある。On the other hand, FIG.11 and FIG.12 is a figure which shows the case where the space | interval of the seam between the magnetic pole piece and iron piece which comprise the stator of the rotary electric machine which concerns on Embodiment 1 of this invention is equalized. The angle θ 3 formed by the joint 11 at both ends of the pole piece 2 and the angle θ 4 formed by the joint 11 at both ends of the iron piece 3 are arranged to coincide with each other. At this time, when the coil 10 is wound around the tooth portion 5 in a state where the stator of the rotating electrical machine is linearly expanded, the back yoke-side back surface of the insulator 9 exists beyond the back yoke portion 4 of the tooth portion 5. Therefore, there is a portion where the back yoke portion 4 does not exist on the back surface of the insulator 9 on the back yoke side, and there is a possibility that the insulator 9 collapses toward the back yoke portion 4 side.

反面、図１１で示した回転電機のステータの場合、磁極片２のバックヨーク部４の比率に対し、図９で示した回転電機のステータと比べて、鉄片３の比率を大きくとることができ、ティース部５から更に離れた位置にフライヤの旋回先端を持っていけるとともに、鉄片３の曲率を大きくとることができ、フライヤ１７の先端部が旋回する際に必要な空間を大きくとることができるので、バックヨーク部４がフライヤに干渉することをより確実に避けることができ、巻線作業が容易となるという利点がある。   On the other hand, in the case of the stator of the rotating electrical machine shown in FIG. 11, the ratio of the iron piece 3 can be made larger than that of the stator of the rotating electrical machine shown in FIG. In addition, the turning tip of the flyer can be brought further away from the teeth portion 5, the curvature of the iron piece 3 can be increased, and a space necessary for turning the tip portion of the flyer 17 can be increased. Therefore, it is possible to more reliably avoid the back yoke portion 4 from interfering with the flyer, and there is an advantage that the winding work is facilitated.

実施の形態２．
図１３は、この発明の実施の形態２に係る回転電機のステータの構造を示す図である。上記実施の形態１では、インシュレータ９が磁極片２のバックヨーク部４の内面側を覆っている構成を示したが、この発明の実施の形態２に係るインシュレータ９１は、磁極片２のバックヨーク部４の内面側のみならず、鉄片３の内面側も覆っている点で異なる。Embodiment 2. FIG.
FIG. 13 is a diagram showing the structure of the stator of the rotating electrical machine according to the second embodiment of the present invention. In the first embodiment, the configuration in which the insulator 9 covers the inner surface side of the back yoke portion 4 of the magnetic pole piece 2 is shown. However, the insulator 91 according to the second embodiment of the present invention is the back yoke of the magnetic pole piece 2. The difference is that not only the inner surface side of the part 4 but also the inner surface side of the iron piece 3 is covered.

このように構成することで、コイル１０の占積率を上げるためにティース部５にコイル１０を高く積み上げても、鉄片３の内面側とコイル１０の絶縁を確保することができる。磁極片２と、それに隣接している両端の鉄片３を覆っているインシュレータ９１は一体部品であり、互いに隣接するバックヨーク部４の外径方向端部３７において、切欠き３３により折り曲げ可能に連結されている。   By comprising in this way, even if the coil 10 is piled up high in the teeth part 5 in order to raise the space factor of the coil 10, the insulation of the inner surface side of the iron piece 3 and the coil 10 can be ensured. The insulator 91 covering the pole piece 2 and the iron pieces 3 at both ends adjacent to the pole piece 2 is an integral part, and is connected to be able to be bent by the notch 33 at the outer radial direction end portion 37 of the back yoke portion 4 adjacent to each other. Has been.

図１４は、この発明の実施の形態２に係る回転電機のステータを直線状に展開したときの図である。図に示すように、帯状の電磁鋼板から打ち抜き、インシュレータ部９１を組み立て巻線する際、回転電機のステータ１は、図１５に示すように、磁極片２のバックヨーク部４の長手方向と鉄片３のバックヨーク部４の長手方向が一致するように配置される。   FIG. 14 is a diagram when the stator of the rotating electrical machine according to the second embodiment of the present invention is developed linearly. As shown in the figure, when punching from a strip-shaped electromagnetic steel sheet and assembling and winding the insulator portion 91, the stator 1 of the rotating electrical machine has the longitudinal direction of the back yoke portion 4 of the pole piece 2 and the iron piece as shown in FIG. 3 are arranged so that the longitudinal directions of the three back yoke portions 4 coincide.

図１５及び図１６は、この発明の実施の形態２に係る回転電機のステータを円環状に折り曲げている状態を示す概略図である。巻線を施し終わった後、各磁極片２のティース部５の自由端側（径方向で出力軸側）の先端部を芯金２３に順次押し当て、ステータ１を巻線時の直線状から円環状に折り曲げて加工していく。このとき、樹脂材料のインシュレータ９１は、鉄片３の内面側に押されて、厚さを薄くした切欠け部３３に応力が集中し、そこを起点として折れ曲がる。   15 and 16 are schematic views showing a state where the stator of the rotating electrical machine according to the second embodiment of the present invention is bent into an annular shape. After completing the winding, the free end side (the output shaft side in the radial direction) of the teeth portion 5 of each pole piece 2 is pressed against the core 23 sequentially, and the stator 1 is removed from the linear shape at the time of winding. It is bent into an annular shape and processed. At this time, the insulator 91 made of a resin material is pushed to the inner surface side of the iron piece 3, stress concentrates on the notch 33 having a reduced thickness, and bends from that point.

図１７は、この発明の実施の形態２に係る他の回転電機のステータを円環状にした状態を示す概略図である。図で示すように、鉄片３のバックヨーク部４の内面側をインシュレータ９２が覆っている。ただし、図１３で示した回転電機のステータとは異なり、磁極片２と、それに隣接している両端の鉄片３を覆っているインシュレータ９２は別部品である。   FIG. 17 is a schematic view showing a state in which the stator of another rotating electrical machine according to the second embodiment of the present invention is formed into an annular shape. As shown in the figure, an insulator 92 covers the inner surface side of the back yoke portion 4 of the iron piece 3. However, unlike the stator of the rotating electrical machine shown in FIG. 13, the pole piece 2 and the insulator 92 covering the iron pieces 3 at both ends adjacent to the pole piece 2 are separate parts.

この場合、図１３で示した回転電機のステータと同じように、鉄片３のバックヨーク部４の内面側とコイル１０の絶縁を確保することができるが、図１３で示した回転電機のステータと比べてインシュレータの部品点数が多くなり、部品の搬送作業や組立作業により多くの時間を要し、生産性は悪化する。   In this case, as in the stator of the rotating electrical machine shown in FIG. 13, it is possible to ensure insulation between the inner surface side of the back yoke portion 4 of the iron piece 3 and the coil 10, but the stator of the rotating electrical machine shown in FIG. Compared to this, the number of parts of the insulator is increased, and it takes more time for the parts transporting and assembling work, and the productivity deteriorates.

その反面、図１３で示した回転電機のステータと比べてフライヤ１７の先端部が旋回する際に必要な空間は大きくとることができる。   On the other hand, as compared with the stator of the rotating electrical machine shown in FIG. 13, the space required when the tip of the flyer 17 turns can be increased.

実施の形態３．
図１８は、この発明の実施の形態３に係る回転電機のステータの巻線機を示した概略図である。上記実施の形態１の巻線作業では、一つのフライヤ１７で複数個の磁極片２のティース部５に順次巻線作業を行うことを特徴としていたが、実施の形態３の巻線作業では、二つのフライヤ１７で二つの磁極片２のティース部５に同時に巻線作業を行うという点が異なる。Embodiment 3 FIG.
FIG. 18 is a schematic diagram showing a stator winding machine for a rotating electrical machine according to Embodiment 3 of the present invention. The winding work of the first embodiment is characterized in that the winding work is sequentially performed on the teeth portions 5 of the plurality of magnetic pole pieces 2 by one flyer 17, but in the winding work of the third embodiment, The difference is that the winding work is simultaneously performed on the teeth portions 5 of the two magnetic pole pieces 2 by the two flyers 17.

二つのフライヤ１７は、ぞれぞれの回転軸Ｂがティース部５の長手方向と一致するように、並列して配置される。一方の磁極片２のティース部５への巻線作業が終わった後、二つのフライヤ１７を方向Ｄに同時にスライド動作させ、隣接する他方の巻線していない磁極片２のティース部５とフライヤ１７の回転軸Ｂが対向する位置まで移動させる。   The two flyers 17 are arranged in parallel so that the respective rotation axes B coincide with the longitudinal direction of the tooth portion 5. After the winding work to the tooth part 5 of one pole piece 2 is finished, the two flyers 17 are simultaneously slid in the direction D, and the teeth part 5 and the flyer of the other non-winding pole piece 2 adjacent to each other. It is moved to a position where the 17 rotation axes B face each other.

このとき、一方のティース部５に巻回したコイル１０の巻き終わり部分を切断することなく、これを渡り線２２として、固定治具１６が有するガイド用ピン２１の外側に沿わせ、続いて、他方のティース部５に対して一方のティース部５に巻いた方向とは逆方向に巻線を施す。このようにして、順次、巻線していない磁極片２のティース部５に巻線作業を施していく。巻線作業の時間は実施の形態１と比べて大幅に短縮される。なお、ここでは、フライヤ１７の個数を二つとしたが、三つであってもそれ以上でもかまわない。ただし、巻線するコイルの数、渡りの構成等については検討する必要がある。   At this time, without cutting the winding end portion of the coil 10 wound around one of the teeth portions 5, this is used as a connecting wire 22 along the outside of the guide pin 21 included in the fixing jig 16, Winding is performed on the other tooth portion 5 in a direction opposite to the direction wound around the one tooth portion 5. In this way, the winding work is sequentially performed on the teeth portion 5 of the pole piece 2 that is not wound. The winding work time is significantly reduced as compared with the first embodiment. Although the number of flyers 17 is two here, it may be three or more. However, it is necessary to consider the number of coils to be wound and the crossover configuration.

実施の形態４．
図１９は、この発明の実施の形態４に係る回転電機のステータを環状にした状態を示す概略図である。上記実施の形態１の回転電機のステータの構造では、磁極片２と鉄片３とは、出力軸を中心とする周方向に、薄肉部６で回動可能に連結されていることを特徴としていたが、この発明の実施の形態４の回転電機のステータの構造では、図２０で示したＳ−Ｔの断面図からわかるように、磁極片２と鉄片３とは、互いに隣接する外径方向端部において、各薄板の積層方向に向けて凸部３４と凹部３８とを設け、この凸部３４と凹部３８を互いにカシメ止めして、折り曲げ可能に連結する連結手段が構成されている点が異なる。Embodiment 4 FIG.
FIG. 19 is a schematic view showing a state in which the stator of the rotating electrical machine according to the fourth embodiment of the present invention is annular. The stator structure of the rotating electrical machine according to the first embodiment is characterized in that the magnetic pole piece 2 and the iron piece 3 are connected so as to be rotatable by the thin portion 6 in the circumferential direction around the output shaft. However, in the structure of the stator of the rotating electric machine according to the fourth embodiment of the present invention, as can be seen from the cross-sectional view taken along the line ST of FIG. The projection portion 34 and the recess portion 38 are provided in the direction in which the thin plates are laminated, and a connecting means for connecting the projection portion 34 and the recess portion 38 so as to be foldable is provided. .

本実施の形態では、コイル巻付後のステータを円環形状に戻す際の取り扱いが実施の形態１と比べて容易になり、さらに生産性の向上を図ることができる。また、機械的に高精度を得ることができ、複数回折り曲げても薄肉部ではないために亀裂が生じたり、その結果、磁気抵抗が高くなって磁気特性を低下させるなどの不具合が生じるのを防止することができる。   In the present embodiment, handling when the stator after coil winding is returned to an annular shape becomes easier than in the first embodiment, and productivity can be further improved. Also, high accuracy can be obtained mechanically, and even if it is bent multiple times, it is not a thin part, so cracks occur, and as a result, problems such as increased magnetic resistance and reduced magnetic properties occur. Can be prevented.

実施の形態５．
図２１は、この発明の実施の形態５に係る回転電機のステータを円環状にした状態を示す概略図である。上記実施の形態１では、磁極片２の数は、４個であったが、磁極片２の数を増やし、多極化することにより、回転電機に生じるトルクリップルを低減できる。なお、ここでは、磁極片２の数が６個の場合を示しているが、８個であっても、９個であっても、それ以上であってもかまわないことは言うまでもない。Embodiment 5. FIG.
FIG. 21 is a schematic diagram showing a state in which the stator of the rotary electric machine according to Embodiment 5 of the present invention is in an annular shape. In the first embodiment, the number of the pole pieces 2 is four. However, by increasing the number of the pole pieces 2 and increasing the number of pole pieces, the torque ripple generated in the rotating electrical machine can be reduced. Although the case where the number of the pole pieces 2 is six is shown here, it goes without saying that the number of pole pieces 2 may be eight, nine, or more.

実施の形態６．
図２９は、この発明の実施の形態６に係る回転電機のステータの構造を示す図である。上記実施の形態では、ステータはむき出しのままの構造であったが、ステータをモールド樹脂で覆ったモールドステータとしてもかまわない。このような構成とすることで、放熱効果の高いステータを構成することが出来る。図において、斜線で示した範囲は、モールド樹脂で覆われる範囲を示す。Embodiment 6 FIG.
FIG. 29 is a diagram showing a structure of a stator of a rotary electric machine according to Embodiment 6 of the present invention. In the above embodiment, the stator has a bare structure, but it may be a molded stator in which the stator is covered with a mold resin. By setting it as such a structure, the stator with a high heat dissipation effect can be comprised. In the figure, the range indicated by diagonal lines indicates the range covered with the mold resin.

斜線で示した範囲、つまり、モールド樹脂で覆われる領域は、コイル１０と渡り線２２とを覆う領域、及び、磁極片２と鉄片３とを覆う領域で、モールドステータの外径は、磁極片２と鉄片３で囲まれた部分の外径よりも大きいことが特徴である。一方、モールドステータの内径は、ティース部５の内径とほぼ一致している。   The hatched area, that is, the area covered with the mold resin, is the area covering the coil 10 and the connecting wire 22 and the area covering the magnetic pole piece 2 and the iron piece 3, and the outer diameter of the molded stator is the magnetic pole piece. It is characterized by being larger than the outer diameter of the portion surrounded by 2 and the iron piece 3. On the other hand, the inner diameter of the mold stator substantially coincides with the inner diameter of the tooth portion 5.

次に、この発明の実施の形態６に係る回転電機のステータの製造方法について説明する。樹脂モールドする前段階の回転電機のステータの製造方法については、上記実施の形態で説明したとおりであるため、ここでは説明を省略する。以下、樹脂成型方法について説明する。上記実施の形態に係る回転電機のステータを樹脂成型用の金型に配置し、モールド樹脂を流し込む。ここで使用するモールド樹脂としては、例えば、ポリフェニレンサルファイド樹脂（ＰＰＳ：Ｐｏｌｙ Ｐｈｅｎｙｌｅｎｅ Ｓｕｌｆｉｄｅ）、ポリアセタール樹脂（ＰＯＭ：Ｐｏｌｙｏｘｙｍｅｔｈｙｌｅｎｅ，Ｐｏｌｙａｃｅｔａｌ）、または、エポキシ樹脂（ＥＰ：Ｅｐｏｘｙ ｒｅｓｉｎ，Ｅｐｏｘｉｄｅ）などがある。   Next, a method of manufacturing a stator for a rotary electric machine according to Embodiment 6 of the present invention will be described. Since the method for manufacturing the stator of the rotating electrical machine before resin molding is as described in the above embodiment, the description thereof is omitted here. Hereinafter, the resin molding method will be described. The stator of the rotating electrical machine according to the above embodiment is placed in a mold for resin molding, and mold resin is poured into the mold. Examples of the mold resin used here include polyphenylene sulfide resin (PPS), polyacetal resin (POM), and epoxy resin (EP: Epoxy resin, Epoxide).

従来、回転電機のステータの放熱効果が低いと、ステータの外径を大きくして放熱面積を拡大したり、冷却ファンを設けるなどの高温対策が必要であった。しかし、本実施の形態に係る回転電機のステータでは、モールド樹脂で発熱するコイルを覆うようにしたことにより、コイルに通電した際に発生する熱がモールド樹脂を伝って放熱することにより、回転電機のステータの温度を抑える効果がある。つまり、予め設定された温度内であれば、回転電機のステータをより小形にすることができる。   Conventionally, when the heat dissipation effect of a stator of a rotating electrical machine is low, high temperature countermeasures such as increasing the outer diameter of the stator to expand the heat dissipation area or providing a cooling fan are necessary. However, in the stator of the rotating electrical machine according to the present embodiment, by covering the coil that generates heat with the mold resin, the heat generated when the coil is energized is transmitted through the mold resin and dissipated, so that the rotating electrical machine is There is an effect of suppressing the temperature of the stator. In other words, the stator of the rotating electrical machine can be made smaller if it is within a preset temperature.

また、回転電機の動作時や、運搬時に発生する振動によりコイルが緩み磁極片や鉄片と接触したり、回転電機のステータに冷媒、燃料、および油などが付着し劣化したりすることを抑制できる。   In addition, it is possible to prevent the coil from loosening due to vibrations generated during operation of the rotating electrical machine or during transportation and coming into contact with the magnetic pole pieces or iron pieces, or the deterioration of the rotating electrical machine due to the attachment of refrigerant, fuel, oil, etc. .

実施の形態７．
図３０は、この発明の実施の形態７に係る回転電機のステータの構造を示す図である。上記実施の形態６では、モールド樹脂で覆われる領域は、コイルと渡り線とを覆う領域、及び、磁極片と鉄片とを覆う領域で、モールドステータの外径は、モールド樹脂で覆われる領域が磁極片２と鉄片３とを覆う領域であるため、磁極片と鉄片で囲まれた部分の外径よりも大きいことが特徴であったが、モールド樹脂で覆われる領域が、コイルと渡り線とを覆う領域、及び、磁極片と鉄片の一部を覆う領域として、モールドステータの外径を、磁極片と鉄片で囲まれた部分の外径よりも小さくしてもかまわない。このような構成とすることで、全体をモールドするより外径を小さくすることができる。図において、斜線で示した範囲は、モールド樹脂で覆われる範囲を示す。Embodiment 7 FIG.
FIG. 30 is a diagram showing the structure of the stator of the rotating electrical machine according to the seventh embodiment of the present invention. In Embodiment 6 described above, the region covered with the mold resin is a region covering the coil and the jumper wire, and a region covering the magnetic pole piece and the iron piece, and the outer diameter of the mold stator is the region covered with the mold resin. Since it is a region covering the pole piece 2 and the iron piece 3, it was characterized by being larger than the outer diameter of the portion surrounded by the pole piece and the iron piece. The outer diameter of the mold stator may be smaller than the outer diameter of the portion surrounded by the magnetic pole piece and the iron piece as the area covering the magnetic pole piece and the area covering the part of the magnetic pole piece and the iron piece. By setting it as such a structure, an outer diameter can be made small rather than molding the whole. In the figure, the range indicated by diagonal lines indicates the range covered with the mold resin.

この発明の実施の形態７に係る回転電機のステータの製造方法は、上記実施の形態６に係る回転電機のステータの製造方法と概ね一致しているため、ここでは説明を省略する。ただし、上記実施の形態６に係る回転電機のステータの外径は、モールド樹脂で覆われる領域が磁極片２と鉄片３とを覆う領域であるため、磁極片２と鉄片３で囲まれた部分の外径よりも大きいものであったが、本実施の形態に係る回転電機のステータの外径は、モールド樹脂で覆われる領域が磁極片と鉄片の一部を覆う領域であるため、磁極片２と鉄片３で囲まれた部分の外径と同じである。そのため、上記実施の形態６で述べた効果に加え、ステータを樹脂成形金型に入れてステータモールドを成形する際に、樹脂成形金型で磁極片や継鉄片を加圧することができ、成形時の樹脂射出圧力によって磁極片や継鉄片が動くことにより、所望の形状に成形することが出来ないといった不具合を防止することができる。また、製品化した場合に放熱効果に比してコンパクトな外形とすることができる。   The method for manufacturing a stator for a rotating electrical machine according to Embodiment 7 of the present invention is generally the same as the method for manufacturing a stator for a rotating electrical machine according to Embodiment 6 described above, and thus the description thereof is omitted here. However, the outer diameter of the stator of the rotating electrical machine according to the sixth embodiment is a portion surrounded by the magnetic pole piece 2 and the iron piece 3 because the area covered with the mold resin is an area covering the magnetic pole piece 2 and the iron piece 3. However, the outer diameter of the stator of the rotating electrical machine according to the present embodiment is that the area covered with the mold resin is an area that covers part of the magnetic pole piece and the iron piece. 2 and the outer diameter of the part surrounded by the iron piece 3. Therefore, in addition to the effects described in the sixth embodiment, the magnetic pole piece and the yoke piece can be pressurized with the resin molding die when the stator is molded in the resin molding die. When the magnetic pole piece and the yoke piece are moved by the resin injection pressure, it is possible to prevent a problem that the desired shape cannot be formed. Moreover, when it commercializes, it can be set as a compact external shape compared with the heat dissipation effect.

１ ステータ、１０ コイル、１１ 継ぎ目、１１１ ステータ、１２ 延長面、１３ 電磁鋼板、１４ 鋼板片、１４１ 第一の鋼板片、１４２ 第二の鋼板片、１５ 自動巻線機、１６ 固定治具、１７ フライヤ、１８ ベース部、１９ 押さえ板、２ 磁極片、２０ ネジ、２１ ガイド用ピン、２２ 渡り線、２３ 芯金、２４ 凸部、２５ 凹部、２６ 磁極片、２７ 鉄片、２８ 磁極片、２９ 継ぎ目、３ 鉄片、３０ 延長線、３１ 中心点、３２ 接続面の下端、３３ 切欠き、３４ 凸部、３５ 鉄片、３６ 鉄片、３７ 外径方向端部、３８ 凹部、４ バックヨーク部、４１ 中心点、４２ 主面、４３ 両端部の下端、５ ティース部、５１ 内側端面部、５２ ティース部、５３ ティース部、６ 薄肉部、７ 凸部、８ 凹部、９ インシュレータ、９１ インシュレータ、９２ インシュレータ。   DESCRIPTION OF SYMBOLS 1 Stator, 10 Coil, 11 Seam, 111 Stator, 12 Extension surface, 13 Magnetic steel plate, 14 Steel plate piece, 141 1st steel plate piece, 142 2nd steel plate piece, 15 Automatic winding machine, 16 Fixing jig, 17 Flyer, 18 base part, 19 holding plate, 2 magnetic pole piece, 20 screw, 21 guide pin, 22 crossover, 23 cored bar, 24 convex part, 25 concave part, 26 magnetic pole piece, 27 iron piece, 28 magnetic pole piece, 29 joint 3 Iron piece, 30 Extension line, 31 Center point, 32 Lower end of connection surface, 33 Notch, 34 Protruding part, 35 Iron piece, 36 Iron piece, 37 Outer diameter direction end part, 38 Concave part, 4 Back yoke part, 41 Center point , 42 Main surface, 43 Lower end of both ends, 5 Teeth part, 51 Inner end face part, 52 Teeth part, 53 Teeth part, 6 Thin part, 7 Convex part, 8 Concave part, 9 Ins Insulator, 91 insulator, 92 insulator.

この発明に係る回転電機のステータは、複数個の磁極片と、該磁極片の各々に隣接する複数個の鉄片とを備え、前記磁極片は、前記複数個の磁極片と前記複数個の鉄片とで環状を形成した場合の外周に沿って配置されたバックヨーク部と、該バックヨーク部から中心方向に突出したティース部とを有し、前記鉄片は、隣接する磁極片の前記バックヨーク部の周方向端部において回動可能に連結され、前記磁極片の両端の面の延長線により形成される角度は前記鉄片の両端の面の延長線により形成される角度より大きいものである。 A stator of a rotating electrical machine according to the present invention includes a plurality of magnetic pole pieces and a plurality of iron pieces adjacent to each of the magnetic pole pieces, and the magnetic pole pieces include the plurality of magnetic pole pieces and the plurality of iron pieces. And a teeth portion projecting in the center direction from the back yoke portion, and the iron piece is the back yoke portion of the adjacent magnetic pole piece. The angle formed by the extension lines of the surfaces at both ends of the magnetic pole piece is larger than the angle formed by the extension lines of the surfaces at both ends of the iron piece .

固定治具１６は、ベース部１８、押さえ板１９、ネジ２０、及び、ガイド用ピン２１を含んで構成される。ステータ１は、磁極片２が有するバックヨーク部４の長手方向と鉄片３の長手方向が一致するような形状でベース部１８の軸方向端面３９に設置され、図７で示されたＸ−Ｙ断面からわかるように、鉄片３のステータ径方向外側の端面４４とベース部１８を面接触させることで所定の位置に固定される。 The fixing jig 16 includes a base portion 18, a pressing plate 19, screws 20, and guide pins 21. The stator 1 is installed on the axial end surface 39 of the base portion 18 so that the longitudinal direction of the back yoke portion 4 of the magnetic pole piece 2 and the longitudinal direction of the iron piece 3 coincide with each other, and is shown in FIG. As can be seen from the cross section, the end face 44 of the iron piece 3 on the outer side in the radial direction of the stator and the base portion 18 are brought into surface contact and fixed in place.

図１５及び図１６は、この発明の実施の形態２に係る回転電機のステータを円環状に折り曲げている状態を示す概略図である。巻線を施し終わった後、各磁極片２のティース部５の自由端側（径方向で出力軸側）の先端部を芯金２３に順次押し当て、ステータ１を巻線時の直線状から円環状に折り曲げて加工していく。このとき、樹脂材料のインシュレータ９１は、鉄片３の内面側に押されて、厚さを薄くした切欠き３３に応力が集中し、そこを起点として折れ曲がる。 15 and 16 are schematic views showing a state where the stator of the rotating electrical machine according to the second embodiment of the present invention is bent into an annular shape. After completing the winding, the free end side (the output shaft side in the radial direction) of the teeth portion 5 of each pole piece 2 is pressed against the core 23 sequentially, and the stator 1 is removed from the linear shape at the time of winding. It is bent into an annular shape and processed. In this case, the insulator 91 of resin material, is pushed by the inner surface of the iron piece 3, stress is concentrated in the notch 33 with a reduced thickness, it bends there as a starting point.

Claims (15)

複数個の磁極片と、
該磁極片の各々に隣接する複数個の鉄片とを備え、
前記磁極片は、前記複数個の磁極片と前記複数個の鉄片とで環状を形成した場合の外周に沿って配置されたバックヨーク部と、該バックヨーク部から中心方向に突出しコイルが巻回されるティース部とを有し、
前記鉄片は、隣接する磁極片の前記バックヨーク部の周方向端部において回動可能に連結されていることを特徴とする回転電機のステータ。A plurality of pole pieces;
A plurality of iron pieces adjacent to each of the pole pieces;
The magnetic pole piece includes a back yoke portion disposed along an outer periphery when the plurality of magnetic pole pieces and the plurality of iron pieces form an annular shape, and projects from the back yoke portion toward the center so that the coil is wound. A tooth portion to be
The stator of a rotating electrical machine, wherein the iron pieces are rotatably connected at circumferential end portions of the back yoke portions of adjacent magnetic pole pieces. 前記バックヨーク部が、前記複数個の磁極片と前記複数個の鉄片とで環状を形成した場合の外周面の一部を構成する平坦な面を有することを特徴とする請求項１に記載の回転電機のステータ。 The said back yoke part has a flat surface which comprises a part of outer peripheral surface at the time of forming a cyclic | annular form with these magnetic pole pieces and these iron pieces. A stator for rotating electrical machines. 前記複数個の磁極片と前記複数個の鉄片とが直線状に展開された場合に、前記バックヨーク部の端面の下端が、当該面と対向する前記鉄片の端面の下端より下側に位置することを特徴とする請求項１または請求項２のいずれかに記載の回転電機のステータ。 When the plurality of magnetic pole pieces and the plurality of iron pieces are developed in a straight line, the lower end of the end face of the back yoke portion is located below the lower end of the end face of the iron piece facing the face. The stator for a rotating electrical machine according to claim 1 or 2, wherein the stator is a rotating electrical machine. 前記鉄片は、前記複数個の磁極片と前記複数個の鉄片とで環状を形成した場合の外周面の一部を構成する円弧状の曲面を有することを特徴とする請求項１から請求項３のいずれか一項に記載の回転電機のステータ。 The said iron piece has the circular-arc-shaped curved surface which comprises a part of outer peripheral surface at the time of forming a cyclic | annular form with these magnetic pole pieces and these iron pieces. The stator of the rotary electric machine as described in any one of these. 前記複数個の磁極片のうちの少なくとも一つのバックヨーク部の端面と、当該面と対向する前記鉄片の端面のそれぞれに、互いに嵌合する凹部と凸部が設けられていることを特徴とする請求項１から請求項４のいずれか一項に記載の回転電機のステータ。 The end face of at least one back yoke part of the plurality of magnetic pole pieces and the end face of the iron piece facing the face are provided with a concave part and a convex part that fit each other. The stator of the rotary electric machine as described in any one of Claims 1-4. 前記鉄片は、隣接する前記磁極片と薄肉部により折り曲げ可能に連結されていることを特徴とする請求項１から請求項５のいずれか一項に記載の回転電機のステータ。 The stator of a rotating electrical machine according to any one of claims 1 to 5, wherein the iron piece is connected to the adjacent magnetic pole piece so as to be bent by a thin portion. 前記ティース部を覆うインシュレータをさらに有し、該インシュレータを介してコイルが巻回されていることを特徴とする請求項１から請求項６のいずれか一項に記載の回転電機のステータ。 The stator of the rotating electrical machine according to any one of claims 1 to 6, further comprising an insulator that covers the tooth portion, and a coil wound around the insulator. 前記インシュレータの先端が、該インシュレータが設けられた磁極片に隣接する鉄片の内周面まで伸びていることを特徴とする請求項７に記載の回転電機のステータ。 The stator of the rotating electrical machine according to claim 7, wherein a tip of the insulator extends to an inner peripheral surface of an iron piece adjacent to a magnetic pole piece provided with the insulator. 前記インシュレータが、該インシュレータが設けられた磁極片と該磁極片に隣接する鉄片との境界部分に切欠きを有していることを特徴とする請求項８に記載の回転電機のステータ。 The stator for a rotating electrical machine according to claim 8, wherein the insulator has a notch in a boundary portion between a magnetic pole piece provided with the insulator and an iron piece adjacent to the magnetic pole piece. 前記複数個の磁極片と前記複数個の鉄片とは、打ち抜かれた電磁鋼板を所定数積層して構成されたものであり、
前記打ち抜かれた電磁鋼板は、前記複数個の磁極片および前記複数個の鉄片のそれぞれに対応する部分が連結された一連の電磁鋼板であることを特徴とする請求項１から請求項９のいずれか一項に記載の回転電機のステータ。The plurality of magnetic pole pieces and the plurality of iron pieces are configured by laminating a predetermined number of punched electromagnetic steel sheets,
The punched electrical steel sheet is a series of electrical steel sheets in which portions corresponding to each of the plurality of magnetic pole pieces and the plurality of iron pieces are connected to each other. A stator for a rotating electrical machine according to claim 1. 請求項１から請求項１０のいずれか一項に記載の回転電機のステータであって、
環状を形成した前記複数個の磁極片と前記複数個の鉄片の一部または全部がモールド樹脂で覆われていることを特徴とする回転電機のステータ。A stator for a rotating electrical machine according to any one of claims 1 to 10,
A stator for a rotating electrical machine, wherein a part or all of the plurality of magnetic pole pieces and the plurality of iron pieces forming an annular shape are covered with a mold resin. 請求項１０記載の回転電機のステータの製造方法であって、
前記複数個の磁極片と前記複数個の鉄片の各々に対応する部分が連結された一連の電磁鋼板を帯状の電磁鋼板から打ち抜く工程と、
該打ち抜かれた電磁鋼板を積層する工程と、
該積層された電磁鋼板が直線状に展開された状態で、前記複数個の磁極片の前記ティース部にコイルを巻回する工程と、
該コイルが巻回された状態で、前記複数個の磁極片及び前記複数個の鉄片を環状に変形させる工程と、
を有することを特徴とする回転電機のステータの製造方法。A method of manufacturing a stator for a rotating electrical machine according to claim 10,
Punching a series of electrical steel sheets connected to portions corresponding to each of the plurality of magnetic pole pieces and the plurality of iron pieces from a strip-shaped electrical steel sheet;
Laminating the punched electrical steel sheet;
A step of winding a coil around the teeth of the plurality of magnetic pole pieces in a state where the laminated electromagnetic steel sheets are linearly expanded;
A step of annularly deforming the plurality of magnetic pole pieces and the plurality of iron pieces in a state where the coil is wound;
A method of manufacturing a stator for a rotating electrical machine, comprising: 前記打ち抜く工程は、前記帯状の電磁鋼板から互いに向かい合って配置された２つの前記一連の電磁鋼板を打ち抜く工程であることを特徴とする請求項１２に記載の回転電機のステータの製造方法。 13. The method of manufacturing a stator for a rotating electrical machine according to claim 12, wherein the punching step is a step of punching the two series of electromagnetic steel plates arranged facing each other from the belt-shaped electromagnetic steel plate. 前記磁極片のティース部、及び、前記磁極片と隣接する鉄片の内周面の少なくとも一部を覆うインシュレータを有し、
前記巻線する工程は、前記インシュレータを介してコイルが巻回される工程を含み、
前記変形させる工程は、前記インシュレータを折り曲げる工程を含むことを特徴とする請求項１２または請求項１３のいずれかに記載の回転電機のステータの製造方法。The insulator covering the teeth portion of the magnetic pole piece and at least a part of the inner peripheral surface of the iron piece adjacent to the magnetic pole piece;
The step of winding includes a step of winding a coil through the insulator,
The method of manufacturing a stator for a rotating electrical machine according to claim 12, wherein the deforming step includes a step of bending the insulator. 請求項１２から請求項１４のいずれか一項に記載の回転電機のステータの製造方法であって、
環状に形成された前記複数個の磁極片と前記複数個の鉄片の一部または全部をモールド樹脂で覆う工程をさらに含むことを特徴とする回転電機のステータの製造方法。A method of manufacturing a stator for a rotating electrical machine according to any one of claims 12 to 14,
A method of manufacturing a stator of a rotating electrical machine, further comprising a step of covering a part or all of the plurality of magnetic pole pieces and the plurality of iron pieces formed in an annular shape with a mold resin.
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