JP5335633B2 - Rotating electric machine and method of manufacturing rotating electric machine - Google Patents

Rotating electric machine and method of manufacturing rotating electric machine Download PDF

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JP5335633B2
JP5335633B2 JP2009218421A JP2009218421A JP5335633B2 JP 5335633 B2 JP5335633 B2 JP 5335633B2 JP 2009218421 A JP2009218421 A JP 2009218421A JP 2009218421 A JP2009218421 A JP 2009218421A JP 5335633 B2 JP5335633 B2 JP 5335633B2
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秀行 前田
裕之 秋田
裕治 中原
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Mitsubishi Electric Corp
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本発明は、磁極ティース毎に集中巻によってコイルが形成された円筒状の固定子とこの固定子の内側に設置された回転子とを備えたインナーロータ型の回転電機および回転電機の製造方法に関するものである。 The present invention relates to an inner rotor type rotating electrical machine including a cylindrical stator in which a coil is formed by concentrated winding for each magnetic pole tooth, and a rotor installed inside the stator, and a method of manufacturing the rotating electrical machine. Is.

インナーロータ型の回転電機の固定子は、電磁鋼板を必要な枚数積層してカシメや溶接により固定して形成され、且つコア基部と複数のティース部とを備えたコア体と、コア体の各ティース部に巻回されたコイルとを備えている。
また、固定子は円筒形状であり、コア体をコイルが巻回されたティース部が内周側になるように曲げ加工することにより形成している。
また、コア体には、固定子のコイル占有率を高めるため、直線帯状のコア体や、ティース部の突出方向とは逆の方向に曲がった形状のコア体が用いられる。これらのコア体には、コア体を円筒形状にする曲げ加工を容易にするため、そのコア基部にスリットが設けられており、コア体は、各1個のティース部を備えた固定子片がスリットにより形成される薄肉連結部で結合された形状である(例えば、特許文献1参照)。
A stator of an inner rotor type rotating electrical machine is formed by laminating a required number of electromagnetic steel plates and fixed by caulking or welding, and a core body including a core base portion and a plurality of teeth portions, and each core body And a coil wound around the teeth portion.
The stator has a cylindrical shape, and is formed by bending the core body so that the tooth portion around which the coil is wound is on the inner peripheral side.
In addition, in order to increase the coil occupancy ratio of the stator, a linear belt-shaped core body or a core body bent in a direction opposite to the protruding direction of the tooth portion is used as the core body. These core bodies are provided with slits in the core base for facilitating bending of the core body into a cylindrical shape, and the core body has stator pieces each having one tooth portion. It is the shape combined by the thin connection part formed of a slit (for example, refer patent document 1).

しかし、スロット数が多い固定子では、コア体の基部に大きなスリットを設けることができず、スリットの幅が小さくなる。それゆえ、スリットの打抜き加工に用いる打抜きパンチは細くなり、打抜きに必要な強度が得られず、コア体のスリットが加工できない。
そのため、スロット数が多い固定子では、コア基部にスリットを形成できないので、薄肉連結部を有しない直線帯状のコア体を、筒状に加工して用いている(例えば、特許文献2参照)。
However, in a stator having a large number of slots, a large slit cannot be provided at the base of the core body, and the width of the slit becomes small. Therefore, the punch used for punching the slit becomes thin, the strength required for punching cannot be obtained, and the slit of the core body cannot be processed.
For this reason, in a stator having a large number of slots, a slit cannot be formed in the core base portion, and therefore, a straight belt-like core body having no thin connecting portion is processed into a cylindrical shape (for example, see Patent Document 2).

特開平09−191588号公報(第4,5頁、第1図、第4図)Japanese Patent Laid-Open No. 09-191588 (pages 4 and 5, FIGS. 1 and 4) 特開2001−298885号公報(第4頁、第1図)Japanese Patent Laid-Open No. 2001-29888 (page 4, FIG. 1)

特許文献1に記載の回転電機の固定子は、薄板の電磁鋼板を複数枚積層したコア体の薄肉連結部を折り曲げて、円筒状としている。しかし、薄板は曲げ加工時、圧縮側に面外変形が発生し板厚方向に膨らんでしまうので、コア体の薄肉連結部が面外変形し、固定子は、コア体の積層方向の寸法が大きくなるとの問題があった。
また、特許文献2に記載の回転電機の固定子は、コア基部にスリットが設けられていない直線帯状のコア体を、折り曲げて円筒形状に加工するので、折り曲げ加工時に発生するコア体の面外変形がさらに大きくなるとの問題があった。
The stator of a rotating electrical machine described in Patent Document 1 is formed into a cylindrical shape by bending a thin connecting portion of a core body in which a plurality of thin electromagnetic steel plates are laminated. However, when the thin plate is bent, out-of-plane deformation occurs on the compression side and swells in the plate thickness direction, so that the thin connecting portion of the core body deforms out of plane, and the stator has a dimension in the stacking direction of the core body. There was a problem of becoming larger.
Further, the stator of the rotating electrical machine described in Patent Document 2 is formed by bending a straight belt-like core body having no slit at the core base into a cylindrical shape. There was a problem that the deformation was further increased.

本発明は、上記のような問題を解決するためになされたものであり、その目的は、コア体の折り曲げ加工時に発生するコア体の面外変形が防止された固定子を備えた回転電機を得ることである。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rotating electrical machine including a stator that prevents out-of-plane deformation of the core body that occurs during bending of the core body. Is to get.

本発明に係わる回転電機の製造方法は、コア基部と磁極ティースを備える複数のコア片が厚肉連結部で結合されたユニットコア板を複数枚積層してユニットコアを形成する第一工程と、積層された磁極ティースコイルを巻回する第二工程と、ユニットコアを厚肉連結部で折り曲げて、コア基部が外周側、磁極ティースが内周側となるように、コイルが設けられた円筒状の固定子を形成する第三工程と、円筒状の固定子の内部に、固定子の軸と同軸に回転子を配設する第四工程と、を含み、第三工程の折り曲げ前における厚肉連結部は、固定子の外周側となる積層厚部と固定子の内周側となる狭厚部とを備え、コア基部および積層厚部の積層方向の幅は互いに等しく一定であり、狭厚部の積層方向の幅は積層厚部の積層方向の幅より狭く、第三工程において厚肉連結部が変形するものである。 The manufacturing method of the rotating electrical machine according to the present invention includes a first step of forming a unit core by laminating a plurality of unit core plates in which a plurality of core pieces each having a core base portion and a magnetic pole tooth are joined by a thick connecting portion, A second step of winding the coil around the laminated magnetic pole teeth , and a cylinder provided with a coil so that the unit core is bent at the thick connecting portion so that the core base is on the outer peripheral side and the magnetic pole teeth are on the inner peripheral side A third step of forming a stator in a cylindrical shape, and a fourth step of disposing a rotor coaxially with the axis of the stator inside the cylindrical stator, and the thickness before bending in the third step The meat connecting portion includes a laminated thick portion on the outer peripheral side of the stator and a narrow thick portion on the inner peripheral side of the stator, and the widths of the core base portion and the laminated thick portion in the stacking direction are equal and constant to each other. The width of the thick part in the stacking direction is narrower than the width of the stacking thick part in the stacking direction. Thick connecting portion is intended to deform in the process.

また、本発明に係わる回転電機は、コア基部から同じ側に突出した複数の磁極ティースを有する直線帯状のコア体と、コア体の磁極ティースに巻装されるコイルとを備え、且つコア体折り曲げて、コイルが設けられたコア体を円筒状にして形成された固定子と、円筒状の固定子の内部に、固定子の軸と同軸に回転子が配設された回転電機であって、コア体のスロット形成部が、積層厚部と第1の狭厚部と第2の狭厚部とからなり、第1の狭厚部がコア体の外周側に設けられ、第2の狭厚部コア体の内周側に設けられたものである。 The rotary electric machine according to the present invention includes a core member of the linear strip having a plurality of magnetic teeth protruding from the core base on the same side, and a coil wound around the magnetic teeth of the core body and core body A rotating electric machine in which a stator is formed by bending a core body provided with a coil into a cylindrical shape, and a rotor is disposed coaxially with the axis of the stator inside the cylindrical stator. The slot forming portion of the core body includes a laminated thickness portion, a first narrow thickness portion, and a second narrow thickness portion, and the first narrow thickness portion is provided on the outer peripheral side of the core body, and the second narrow thickness portion is provided. The thick part is provided on the inner peripheral side of the core body.

本発明に係わる回転電機の製造方法は、コア基部と磁極ティースを備える複数のコア片が厚肉連結部で結合されたユニットコア板を複数枚積層してユニットコアを形成する第一工程と、積層された磁極ティースコイルを巻回する第二工程と、ユニットコアを厚肉連結部で折り曲げて、コア基部が外周側、磁極ティースが内周側となるように、コイルが設けられた円筒状の固定子を形成する第三工程と、円筒状の固定子の内部に、固定子の軸と同軸に回転子を配設する第四工程と、を含み、第三工程の折り曲げ前における厚肉連結部は、固定子の外周側となる積層厚部と固定子の内周側となる狭厚部とを備え、コア基部および積層厚部の積層方向の幅は互いに等しく一定であり、狭厚部の積層方向の幅は積層厚部の積層方向の幅より狭く、第三工程において厚肉連結部が変形するものであるので、コア体の矯正加工が不要であるとともに、固定子製造時のハンドリングにおいて、コア体が折り曲がる等の不具合が発生するのを防止できる。 The manufacturing method of the rotating electrical machine according to the present invention includes a first step of forming a unit core by laminating a plurality of unit core plates in which a plurality of core pieces each having a core base portion and a magnetic pole tooth are joined by a thick connecting portion, A second step of winding the coil around the laminated magnetic pole teeth , and a cylinder provided with a coil so that the unit core is bent at the thick connecting portion so that the core base is on the outer peripheral side and the magnetic pole teeth are on the inner peripheral side A third step of forming a stator in a cylindrical shape, and a fourth step of disposing a rotor coaxially with the axis of the stator inside the cylindrical stator, and the thickness before bending in the third step The meat connecting portion includes a laminated thick portion on the outer peripheral side of the stator and a narrow thick portion on the inner peripheral side of the stator, and the widths of the core base portion and the laminated thick portion in the stacking direction are equal and constant to each other. The width of the thick part in the stacking direction is narrower than the width of the stacking thick part in the stacking direction. In the thick connecting portion that is intended to deform in the process, can be prevented with straightening of the core body is not required, in handling during stator manufacturing and the problems such as the core body is bent is generated.

また、本発明に係わる回転電機は、コア基部から同じ側に突出した複数の磁極ティースを有する直線帯状のコア体と、コア体の磁極ティースに巻装されるコイルとを備え、且つコア体折り曲げて、コイルが設けられたコア体を円筒状にして形成された固定子と、円筒状の固定子の内部に、固定子の軸と同軸に回転子が配設された回転電機であって、コア体のスロット形成部が、積層厚部と第1の狭厚部と第2の狭厚部とからなり、第1の狭厚部がコア体の外周側に設けられ、第2の狭厚部コア体の内周側に設けられたものであるので、コア体を折り曲げて円筒状の固定子を形成する場合のコア体の面外変形量を小さくでき、コア体の積厚方向の矯正加工が不要であり、固定子の製造工程を少なくできるとともに、製造設備を省略できるので、コストダウンが可能である。 The rotary electric machine according to the present invention includes a core member of the linear strip having a plurality of magnetic teeth protruding from the core base on the same side, and a coil wound around the magnetic teeth of the core body and core body A rotating electric machine in which a stator is formed by bending a core body provided with a coil into a cylindrical shape, and a rotor is disposed coaxially with the axis of the stator inside the cylindrical stator. The slot forming portion of the core body includes a laminated thickness portion, a first narrow thickness portion, and a second narrow thickness portion, and the first narrow thickness portion is provided on the outer peripheral side of the core body, and the second narrow thickness portion is provided. Since the thick portion is provided on the inner peripheral side of the core body, the amount of out-of-plane deformation of the core body when the core body is bent to form a cylindrical stator can be reduced, and the thickness direction of the core body straightening is not necessary, it is possible to reduce the stator manufacturing process, it can be omitted manufacturing equipment , It is possible to cost down.

本発明の実施の形態1に係わる回転電機における、固定子を形成するユニットコアの正面模式図(a)と、ユニットコアのコア片にコイルが巻回された状態の正面断面模式図(b)と、コア片にコイルが巻回されたユニットコアを折り曲げて形成した円弧状ユニットコアの正面断面模式図(c)とである。In the rotary electric machine concerning Embodiment 1 of this invention, the front schematic diagram (a) of the unit core which forms a stator, and the front cross-sectional schematic diagram of the state by which the coil was wound around the core piece of the unit core (b) FIG. 4 is a schematic front sectional view (c) of an arc-shaped unit core formed by bending a unit core in which a coil is wound around a core piece. 本発明の実施の形態1に係わる回転電機における、円弧状ユニットコアの複数台を集めて形成した円筒状の固定子の正面断面模式図(a)と、固定子に回転子を配設した回転電機の正面断面模式図(b)とである。The front cross-sectional schematic diagram (a) of the cylindrical stator formed by collecting a plurality of arc-shaped unit cores in the rotating electrical machine according to the first embodiment of the present invention, and the rotation in which the rotor is disposed on the stator It is a front cross-sectional schematic diagram (b) of an electric machine. 本発明の実施の形態1に係わる回転電機の固定子に用いられるユニットコアの薄肉連結部の構造を示す拡大正面模式図(a)と、薄肉連結部のA−A断面の模式図(b)とである。The enlarged front schematic diagram (a) which shows the structure of the thin connection part of the unit core used for the stator of the rotary electric machine concerning Embodiment 1 of this invention, and the schematic diagram of the AA cross section of a thin connection part (b) It is. 本発明の実施の形態1に係わる回転電機の固定子に用いられるコア片が直線帯状に並んだユニットコアの正面断面模式図である。It is a front cross-sectional schematic diagram of the unit core in which the core piece used for the stator of the rotary electric machine concerning Embodiment 1 of this invention was located in a linear strip form. 本発明の実施の形態2に係わる回転電機の固定子に用いられるユニットコアの薄肉連結部の連結部断面を示す模式図である。It is a schematic diagram which shows the connection part cross section of the thin connection part of the unit core used for the stator of the rotary electric machine concerning Embodiment 2 of this invention. 本発明の実施の形態3に係わる回転電機における、固定子を形成するコア体の正面模式図(a)と、薄肉連結部の拡大正面模式図(b)と、薄肉連結部のB−B断面の模式図(c)とである。In the rotary electric machine concerning Embodiment 3 of this invention, the front schematic diagram (a) of the core body which forms a stator, the enlarged front schematic diagram (b) of a thin connection part, and the BB cross section of a thin connection part It is a schematic diagram (c). 本発明の実施の形態4に係わる回転電機の固定子に用いられるユニットコアの正面模式図(a)と、厚肉連結部のC−C断面の模式図(b)とである。It is the front schematic diagram (a) of the unit core used for the stator of the rotary electric machine concerning Embodiment 4 of this invention, and the schematic diagram (b) of CC cross section of a thick connection part. 本発明の実施の形態5に係わる回転電機における、固定子を形成するコア体の正面模式図(a)と、スロット形成部のD−D断面の模式図(b)とである。In the rotary electric machine concerning Embodiment 5 of this invention, it is the front schematic diagram (a) of the core body which forms a stator, and the schematic diagram (b) of DD cross section of a slot formation part.

実施の形態1.
図1は、本発明の実施の形態1に係わる回転電機における、固定子を形成するユニットコアの正面模式図(a)と、ユニットコアのコア片にコイルが巻回された状態の正面断面模式図(b)と、コア片にコイルが巻回されたユニットコアを折り曲げて形成した円弧状ユニットコアの正面断面模式図(c)とである。
図2は、本発明の実施の形態1に係わる回転電機における、円弧状ユニットコアの複数台を集めて形成した円筒状の固定子の正面断面模式図(a)と、固定子に回転子を配設した回転電機の正面断面模式図(b)とである。
Embodiment 1 FIG.
FIG. 1 is a schematic front view (a) of a unit core forming a stator in a rotating electric machine according to Embodiment 1 of the present invention, and a schematic front sectional view of a state in which a coil is wound around a core piece of the unit core. FIG. 2B is a schematic front sectional view of an arc-shaped unit core formed by bending a unit core in which a coil is wound around a core piece.
FIG. 2 is a front cross-sectional schematic diagram (a) of a cylindrical stator formed by collecting a plurality of arc-shaped unit cores in the rotating electrical machine according to the first embodiment of the present invention, and a rotor on the stator. It is a front cross-sectional schematic diagram (b) of the arrange | positioned rotary electric machine.

本実施の形態では、図1(a)に示すように、コア体を形成するものとして、3個のコア片2(特許文献1の固定子片に相当)からなるユニットコア5が用いられている。ユニットコア5のコア片2は、コア基部3に設けられたスリット9によって形成された薄肉連結部6で結合されている。
各コア片2は、同じ側に突出した磁極ティース4を有している。またユニットコア5は、磁極ティース4がコア基部3から突出した方向とは逆の方向に、薄肉連結部6を基点として屈曲している。
また、ユニットコア5は、電磁鋼板から、例えば打ち抜き等の加工によって得られたユニットコア板を複数枚積層し、カシメや溶接等で接合して形成されている。
In this embodiment, as shown in FIG. 1A, a unit core 5 including three core pieces 2 (corresponding to the stator piece of Patent Document 1) is used as a core body. Yes. The core pieces 2 of the unit core 5 are coupled by a thin connecting portion 6 formed by a slit 9 provided in the core base 3.
Each core piece 2 has magnetic teeth 4 protruding on the same side. The unit core 5 is bent in the direction opposite to the direction in which the magnetic teeth 4 protrude from the core base 3 with the thin connecting portion 6 as a base point.
The unit core 5 is formed by laminating a plurality of unit core plates obtained from a magnetic steel sheet by, for example, punching or the like, and joining them by caulking or welding.

また、図1(b)に示すように、ユニットコア5の各コア片2の磁極ティース4には、絶縁物(図示せず)を介してコイル7が巻回されている。
また、図1(c)に示すように、磁極ティース4にコイル7が巻回されたユニットコア5は、各コア片間のスリット9を閉じるように、薄肉連結部6を基点として折り曲げられて、円弧状固定子体1aが形成される。
そして、図2(a)に示すように、3個の円弧状固定子体1aを組み合わせることにより、コア片2を円状に配列したコア体とコイル7とを備えた円筒状の固定子1が形成される。各円弧状固定子体1a同士の衝合部10は、溶接、接着等で接合されている。
さらに、図2(b)に示すように、円筒状の固定子1の内部に、固定子1と同軸に回転子11が配設されて回転電機100となる。
Moreover, as shown in FIG.1 (b), the coil 7 is wound by the magnetic pole teeth 4 of each core piece 2 of the unit core 5 via the insulator (not shown).
Further, as shown in FIG. 1C, the unit core 5 in which the coil 7 is wound around the magnetic teeth 4 is bent with the thin connecting portion 6 as a starting point so as to close the slit 9 between the core pieces. The arcuate stator body 1a is formed.
Then, as shown in FIG. 2A, a cylindrical stator 1 having a core body and a coil 7 in which the core pieces 2 are arranged in a circle by combining three arc-shaped stator bodies 1a. Is formed. The abutting portions 10 of the respective arcuate stator bodies 1a are joined by welding, adhesion or the like.
Further, as shown in FIG. 2 (b), a rotor 11 is disposed coaxially with the stator 1 inside the cylindrical stator 1 to form a rotating electrical machine 100.

図3は、本発明の実施の形態1に係わる回転電機の固定子に用いられるユニットコアの薄肉連結部の構造を示す拡大正面模式図(a)と、薄肉連結部のA−A断面の模式図(b)とである。
図3(a)に示す、折り曲げる前のユニットコア5の薄肉連結部6は、ユニットコア板の積層方向の幅が、積層厚さと同じ部分(積層厚部と記す)6aと、狭くなった部分(狭厚部と記す)6bとを備えている。そして、積層厚部6aはユニットコア5を円弧状固定子体1aとした場合の径方向における外周側にあり、狭厚部6bはスリット9側、すなわち磁極ティース4が突出している内周側に設けられている。
FIG. 3: is an enlarged front schematic diagram (a) which shows the structure of the thin connection part of the unit core used for the stator of the rotary electric machine concerning Embodiment 1 of this invention, and the schematic of AA cross section of a thin connection part It is a figure (b).
The thin connecting portion 6 of the unit core 5 before bending shown in FIG. 3A is a portion in which the width in the stacking direction of the unit core plate is the same as the stack thickness (denoted as a stack thick portion) 6a and a narrow portion 6b (referred to as a narrow portion). The laminated thick portion 6a is on the outer peripheral side in the radial direction when the unit core 5 is an arcuate stator body 1a, and the narrow thick portion 6b is on the slit 9 side, that is, on the inner peripheral side from which the magnetic teeth 4 protrude. Is provided.

また、図3(b)に示すように、折り曲げる前のユニットコア5の薄肉連結部6のA−A断面、すなわち、ユニットコア板の積層方向と平行な断面(連結部断面と記す)は、積層厚部6aが矩形形状であり、狭厚部6bがテーパ形状である。
そして、テーパ形状の狭厚部6bの断面は、矩形形状の積層厚部6aとの接合部から内周側に向かって、断面の幅が連続的に狭くなっている。
また、連結部断面が矩形形状からテーパ形状にかわる位置は、図3に示すユニットコア5を薄肉連結部6で折り曲げる場合の、薄肉連結部6の折り曲げ中心軸の位置、あるいは折り曲げ中心軸の位置より内周側にある。そして、折り曲げ中心軸より内周側にある連結部断面が矩形形状からテーパ形状にかわる位置の下限は、テーパ形状の狭厚部6bの長さが、折り曲げ中心軸から薄肉連結部6の内周側端部までの長さの1/3、好ましくは1/2、より好ましくは2/3となる位置である。
Moreover, as shown in FIG.3 (b), the AA cross section of the thin connection part 6 of the unit core 5 before bending, ie, the cross section parallel to the lamination direction of a unit core board (it describes as a connection part cross section), The laminated thick part 6a has a rectangular shape, and the narrow thick part 6b has a tapered shape.
And the cross-sectional width of the taper-shaped narrow part 6b is continuously narrowed toward the inner peripheral side from the joint part with the rectangular laminated thickness part 6a.
The position where the cross section of the connecting portion changes from a rectangular shape to a tapered shape is the position of the bending center axis of the thin connecting portion 6 or the position of the bending center axis when the unit core 5 shown in FIG. It is on the inner circumference side. The lower limit of the position where the cross section of the connecting portion on the inner peripheral side from the bending center axis changes from the rectangular shape to the tapered shape is that the length of the tapered narrow portion 6b is the inner circumference of the thin connecting portion 6 from the bending central axis. The position is 1/3, preferably 1/2, more preferably 2/3 of the length to the side end.

コア体を、コア片を結合する薄肉連結部で折り曲げると、薄肉連結部の折り曲げ中心軸の位置から内周側の圧縮側に行くほど、薄肉連結部の面外変形量が大きくなる。
しかし、本実施の形態では、回転子1を形成するユニットコア5の薄肉連結部6は、連結部断面が矩形形状の積層厚部6aと、積層厚部6aより内周側にある連結部断面がテーパ形状の狭厚部6bとからなる。そして、連結部断面が矩形形状からテーパ形状にかわる位置は、ユニットコア5を薄肉連結部6で折り曲げる場合の、薄肉連結部6の折り曲げ中心軸の位置、あるいは折り曲げ中心軸の位置より内周側にある。
すなわち、本実施の形態のユニットコア5は、薄肉連結部6の折り曲げ中心軸の位置から内周側の圧縮側に行くほど、薄肉連結部6の厚さが薄くなっているので、ユニットコア5を折り曲げた時に生じる薄肉連結部6の面外変形量が小さく、ユニットコアの積厚方向の矯正加工が不要である。
そして、このようなユニットコアが回転子に用いられた本実施の形態の回転電機100は、固定子の製造工程を少なくできるとともに、製造設備を省略できるので、コストダウンが可能である。
When the core body is bent at the thin-walled connecting portion that joins the core pieces, the amount of out-of-plane deformation of the thin-walled connecting portion increases from the position of the bending center axis of the thin-walled connecting portion toward the compression side on the inner peripheral side.
However, in the present embodiment, the thin connecting portion 6 of the unit core 5 that forms the rotor 1 includes a laminated thick section 6a having a rectangular cross section, and a cross section of the connecting portion on the inner peripheral side of the laminated thick section 6a. Consists of a tapered narrow portion 6b. The position where the cross-section of the connecting portion changes from a rectangular shape to a tapered shape is the inner peripheral side of the position of the bending center axis of the thin connecting portion 6 or the position of the bending center axis when the unit core 5 is bent by the thin connecting portion 6. It is in.
That is, in the unit core 5 of the present embodiment, the thickness of the thin connecting portion 6 decreases from the position of the bending central axis of the thin connecting portion 6 toward the compression side on the inner peripheral side. The amount of out-of-plane deformation of the thin-walled connecting portion 6 that occurs when the wire is bent is small, and correction processing in the stacking direction of the unit core is unnecessary.
And the rotary electric machine 100 of this Embodiment in which such a unit core was used for the rotor can reduce the manufacturing process of a stator and can reduce a manufacturing cost, so that the cost can be reduced.

本実施の形態の回転電機100は、9スロット8極の回転電機であり、ユニットコア5を形成するコア片数が3個で、コア体15を形成するユニットコア数が3個であるが、これらに限定されず、回転電機の固定子の仕様に応じて、これらの数は適宜決められる。
また、本実施の形態では、ユニットコアは、コア片の磁極ティースが突出した方向とは逆の方向に、薄肉連結部を基点として屈曲しているが、これに限定されず、図4に示すように3固のコア片2が薄肉連結部6で結合され、直線状に並んだユニットコア5bであっても良い。
また、本実施の形態では、コイルは磁極ティースに絶縁物を介して巻回しているが、予め巻回して形成したコイルを磁極ティースに挿入しても良い。
The rotating electrical machine 100 according to the present embodiment is a 9-slot 8-pole rotating electrical machine, in which the number of core pieces forming the unit core 5 is 3, and the number of unit cores forming the core body 15 is 3. However, the number is not limited to these, and the number is appropriately determined according to the specifications of the stator of the rotating electrical machine.
Further, in the present embodiment, the unit core is bent in the direction opposite to the direction in which the magnetic teeth of the core piece protrude from the thin connecting portion, but is not limited to this, and is shown in FIG. As described above, the unit core 5b may be a unit core 5b in which the three solid core pieces 2 are joined by the thin-walled connecting portion 6 and arranged in a straight line.
In the present embodiment, the coil is wound around the magnetic pole teeth via an insulator, but a coil formed by winding in advance may be inserted into the magnetic pole teeth.

実施の形態2.
図5は、本発明の実施の形態2に係わる回転電機の固定子に用いられるユニットコアの薄肉連結部の連結部断面を示す模式図である。
本実施の形態の回転電機は、固定子に用いられるユニットコアが、積層厚部と狭厚部とを有する薄肉連結部を備え、図5に示すように、薄肉連結部における連結部断面が、積層厚部では矩形形状であり、狭厚部では積層厚部との接合部から内周側に向かって、断面の幅が段階的に狭くなっていく形状である以外、実施の形態1の回転電機と同様である。
Embodiment 2. FIG.
FIG. 5 is a schematic diagram showing a cross-section of a connecting portion of a thin connecting portion of a unit core used for a stator of a rotating electrical machine according to Embodiment 2 of the present invention.
In the rotating electrical machine of the present embodiment, the unit core used for the stator includes a thin connection portion having a laminated thickness portion and a narrow thickness portion, and as shown in FIG. The rotation of the first embodiment is a rectangular shape in the laminated thick portion, and the shape in which the width of the cross section gradually decreases from the joint portion with the laminated thick portion toward the inner peripheral side in the narrow thick portion. It is the same as the electric machine.

すなわち、図5(a)の断面図に示すように、本実施の形態における第1の薄肉連結部26の連結部断面は、積層厚部26aでは矩形形状であり、狭厚部26bでは、積層厚部26aとの接合部より、積層されたコア片の両方の表面側が、段階的に狭くなっていく形状である。
また、図5(b)の断面図に示すように、本実施の形態における第2の薄肉連結部27の連結部断面は、積層厚部26aでは矩形形状であり、狭厚部27bでは、積層厚部27aとの接合部より、積層されたコア片の片方の表面側が段階的に狭くなっていく形状である。
That is, as shown in the cross-sectional view of FIG. 5A, the cross section of the connection portion of the first thin connection portion 26 in the present embodiment is a rectangular shape in the stacked thick portion 26a, and the stacked portion in the narrow thickness portion 26b. It is a shape where both surface sides of the laminated core pieces become narrower in stages than the joint with the thick part 26a.
In addition, as shown in the cross-sectional view of FIG. 5B, the cross-section of the second thin-walled connecting portion 27 in the present embodiment has a rectangular shape in the laminated thick portion 26a and a laminated portion in the narrow thick portion 27b. The shape is such that one surface side of the laminated core pieces becomes narrower stepwise than the joint with the thick part 27a.

本実施の形態の回転電機も、固定子に用いられるユニットコアの薄肉連結部が、積層厚部と狭厚部とを備え、狭厚部の断面の幅が、内周側に向かって、段階的に狭くなっており、且つ連結部断面が矩形形状から段階的に狭くなる形状にかわる位置は、ユニットコアを薄肉連結部で折り曲げる場合の、コア片の折り曲げ中心軸の位置、あるいは折り曲げ中心軸の位置より内周側にあるので、実施の形態1の回転電機と同様な効果を有する。   In the rotating electrical machine of the present embodiment, the thin connecting portion of the unit core used for the stator includes a laminated thick portion and a narrow portion, and the width of the cross section of the narrow portion is stepped toward the inner peripheral side. The position where the cross-section of the connecting portion changes from a rectangular shape to a shape that gradually decreases is the position of the bending center axis of the core piece or the bending center axis when the unit core is bent at the thin connecting portion. Therefore, it has the same effect as the rotating electrical machine of the first embodiment.

実施の形態3.
図6は、本発明の実施の形態3に係わる回転電機における、固定子を形成するコア体の正面模式図(a)と、薄肉連結部の拡大正面模式図(b)と、薄肉連結部のB−B断面の模式図(c)とである。
本実施の形態の回転電機は、固定子に用いられるコア体が、図6(a)に示すように、固定子を形成するのに必要な数のコア片32が、薄肉連結部36で結合され、且つ直線帯状に並んだコア体35である以外、実施の形態1の回転電機100と同様である。
そして、図6(b)に示すように、薄肉連結部36は、コア基部33に設けられたスリット39によって形成されている。
Embodiment 3 FIG.
FIG. 6 is a front schematic view (a) of a core body forming a stator, an enlarged front schematic view (b) of a thin connecting portion, and a thin connecting portion in a rotating electrical machine according to Embodiment 3 of the present invention. It is the schematic diagram (c) of a BB cross section.
In the rotating electrical machine of the present embodiment, as shown in FIG. 6A, the core body used for the stator is connected with the number of core pieces 32 required to form the stator by the thin-walled connecting portion 36. The rotary electric machine 100 is the same as the rotary electric machine 100 of the first embodiment except that the core bodies 35 are arranged in a straight strip.
As shown in FIG. 6B, the thin connecting portion 36 is formed by a slit 39 provided in the core base portion 33.

また、図6(b)と図6(c)とに示すように、本実施の形態の回転電機に用いられるコア体35も、薄肉連結部36のB−B断面、すなわち連結部断面が、実施の形態1と同様に、矩形形状の積層厚部36aとテーパ形状の狭厚部36bとからなり、狭厚部36bが、磁極ティース34が突出した側である内周側にあり、それと、連結部断面が矩形形状からテーパ形状にかわる位置が、コア体35を薄肉連結部36で折り曲げる場合の、薄肉連結部36の折り曲げ中心軸の位置、あるいは折り曲げ中心軸の位置より内周側にあるので、実施の形態1の回転電機と同様な効果を有する。
また、本実施の形態の回転電機は、固定子として必要な数のコア片32が、直線帯状に並んだコア体35を用いて、固定子が形成されるので、両端のコア片32を接合することにより、固定子が形成でき、製造工程を少なくできる。
また、薄肉連結部の連結部断面は、実施の形態2の回転電機に用いられたユニットコアの連結部断面と同様であっても良い。
Further, as shown in FIGS. 6B and 6C, the core body 35 used in the rotating electrical machine of the present embodiment also has a BB cross section of the thin connection portion 36, that is, a connection portion cross section. As in the first embodiment, it is composed of a rectangular laminated thickness portion 36a and a tapered narrow thickness portion 36b, and the narrow thickness portion 36b is on the inner peripheral side from which the magnetic pole teeth 34 protrude, and The position where the cross-section of the connecting portion changes from a rectangular shape to a tapered shape is on the inner peripheral side of the position of the bending center axis of the thin connecting portion 36 or the position of the bending center axis when the core body 35 is bent by the thin connecting portion 36. Therefore, it has the same effect as the rotating electrical machine of the first embodiment.
Further, in the rotating electrical machine of the present embodiment, the stator is formed by using the core body 35 in which the necessary number of core pieces 32 as a stator are arranged in a straight strip shape, so that the core pieces 32 at both ends are joined. By doing so, a stator can be formed and manufacturing steps can be reduced.
Moreover, the connection part cross section of a thin connection part may be the same as the connection part cross section of the unit core used for the rotary electric machine of Embodiment 2. FIG.

実施の形態4.
図7は、本発明の実施の形態4に係わる回転電機の固定子に用いられるユニットコアの正面模式図(a)と、厚肉連結部のC−C断面の模式図(b)とである。
本実施の形態の回転電機は、図7(a)に示すように、固定子に用いられるユニットコア45は、コア基部43にスリットが設けられておらず、コア片42がスリットを有しない連結部(厚肉連結部と記す)46で結合されている以外、実施の形態1の回転電機と同様である。そして、厚肉連結部46は、積層厚部46aと積層厚みの幅が狭くなった狭厚部46bとからなり、狭厚部46bが、磁極ティース44が突出した側(内周側と記す)に形成されている。
Embodiment 4 FIG.
FIG. 7: is the front schematic diagram (a) of the unit core used for the stator of the rotary electric machine concerning Embodiment 4 of this invention, and the schematic diagram (b) of CC cross section of a thick connection part. .
In the rotating electrical machine of the present embodiment, as shown in FIG. 7A, the unit core 45 used for the stator is not provided with a slit in the core base 43, and the core piece 42 has no slit. It is the same as that of the rotating electrical machine of the first embodiment, except that it is connected by a portion (denoted as a thick-walled connecting portion) 46. The thick connecting portion 46 includes a laminated thickness portion 46a and a narrow thickness portion 46b in which the width of the laminated thickness is narrow, and the narrow thickness portion 46b is a side from which the magnetic pole teeth 44 protrude (referred to as an inner peripheral side). Is formed.

図7(b)に示すように、厚肉連結部46のC−C断面、すなわち、厚肉連結部の連結部断面は、実施の形態1の薄肉連結部の連結部断面と同様に、積層厚部46aが矩形形状であり、狭厚部46bがテーパ形状である。そして、狭厚部46bは、厚肉連結部の折り曲げ中心軸の位置より内周側の圧縮側にあり、連結部断面が矩形形状からテーパ形状にかわる位置は、ユニットコア45を厚肉連結部46で折り曲げる場合の、厚肉連結部46の折り曲げ中心軸の位置、あるいは折り曲げ中心軸の位置より内周側にある。
そのため、本実施の形態の回転電機は、実施の形態1の回転電機と同様な効果を有するとともに、ユニットコアの厚肉連結部は、断面積が大きいので、コア片の連結部の強度が高く、固定子製造時のハンドリングにおいて、コア体が折り曲がる等の不具合が発生するのを防止できる。
As shown in FIG. 7B, the CC cross section of the thick connecting portion 46, that is, the cross section of the thick connecting portion is the same as the cross section of the thin connecting portion of the first embodiment. The thick part 46a is rectangular and the narrow part 46b is tapered. The narrow portion 46b is on the compression side on the inner peripheral side relative to the position of the bending center axis of the thick connecting portion, and the position where the cross section of the connecting portion changes from a rectangular shape to a tapered shape is determined by connecting the unit core 45 to the thick connecting portion. In the case of bending at 46, it is located on the inner peripheral side of the position of the bending center axis of the thick connecting portion 46 or the position of the bending center axis.
Therefore, the rotating electrical machine of the present embodiment has the same effect as the rotating electrical machine of the first embodiment, and the thick connecting portion of the unit core has a large cross-sectional area, so the strength of the connecting portion of the core piece is high. In handling at the time of manufacturing the stator, it is possible to prevent problems such as bending of the core body.

図7では、コア片が直線帯状に並んだユニットコアを例示したが、ユニットコアが、コア片の磁極ティースが突出した方向とは逆の方向に、厚肉連結部を基点として屈曲していても良い。
また、厚肉連結部の連結部断面は、実施の形態2の回転電機の固定子に用いられたユニットコアの薄肉連結部の連結部断面と同様であっても良い。
また、このようなコア片の結合構造は、実施の形態3の回転電機の固定子にも適用でき、同様な効果が得られる。
In FIG. 7, the unit core in which the core pieces are arranged in a straight strip is illustrated, but the unit core is bent in the direction opposite to the direction in which the magnetic teeth of the core piece protrude from the thick connecting portion. Also good.
Moreover, the cross section of the connection portion of the thick connection portion may be the same as the cross section of the connection portion of the thin connection portion of the unit core used in the stator of the rotating electrical machine of the second embodiment.
Further, such a coupling structure of the core pieces can be applied to the stator of the rotating electric machine of the third embodiment, and the same effect can be obtained.

実施の形態5.
図8は、本発明の実施の形態5に係わる回転電機における固定子を形成するコア体の正面模式図(a)と、スロット形成部のD−D断面の模式図(b)とである。
図8(a)は、固定子を形成するコア体の全体を示したものではなく、このコア体の構造を示す部分正面模式図である。
本実施の形態の回転電機では、図8(a)に示すように、固定子に用いられるコア体は、コア基部53から全て同じ側に突出した複数の磁極ティース54を備えた直線帯状のコア体55である。
Embodiment 5 FIG.
FIG. 8 is a schematic front view (a) of a core body forming a stator in a rotary electric machine according to Embodiment 5 of the present invention, and a schematic diagram (b) of a DD cross section of a slot forming portion.
FIG. 8A does not show the entire core body forming the stator, but is a partial schematic front view showing the structure of the core body.
In the rotating electrical machine of the present embodiment, as shown in FIG. 8A, the core body used for the stator is a straight belt-like core having a plurality of magnetic pole teeth 54 protruding from the core base 53 to the same side. It is a body 55.

本実施の形態のコア体55も、コア板を積層して形成されている。そして、コア基部53における磁極ティース54が突出していないスロット59の底部を形成する部分(スロット形成部と記す)56は、コア板の積層方向の幅が、積層厚さと同じ部分(積層厚部と記す)56aと、狭くなった第1の部分(第1の狭厚部と記す)56bと、狭くなった第2の部分(第2の狭厚部と記す)56cを備えている。
そして、第1の狭厚部56bは、コア体55のスロット側の反対側(外周側と記す)に設けられ、第2の狭厚部56cは、コア体55のスロット側(内周側と記す)に設けられている。
The core body 55 of the present embodiment is also formed by stacking core plates. A portion (denoted as a slot forming portion) 56 that forms the bottom portion of the slot 59 in which the magnetic teeth 54 do not protrude in the core base portion 53 is a portion in which the width in the laminating direction of the core plate is the same as the laminated thickness (the laminated thick portion and 56a, a narrowed first portion (referred to as a first narrow portion) 56b, and a narrowed second portion (referred to as a second narrow portion) 56c.
The first narrow portion 56b is provided on the side opposite to the slot side of the core body 55 (denoted as the outer peripheral side), and the second narrow portion 56c is disposed on the slot side (inner peripheral side of the core body 55). It is provided.

図8(b)に示すように、コア基部53におけるスロット形成部56のD−D断面、すなわち、スロット形成部56の積層断面は、積層厚部56aが矩形形状であり、第1と第2との狭厚部56b,56cがテーパ形状である。
そして、テーパ形状の狭厚部56b,56cの断面は、矩形形状の積層厚部56aとの接合部から離れる方向に向かって、断面の幅が連続的に狭くなっている。
また、スロット形成部56の積層断面が、矩形形状からテーパ形状にかわる位置は、図8(a)に示すコア体55を円筒状にするために折り曲げる場合の、スロット形成部56における折り曲げ中心軸の位置より、第1の狭厚部56bでは、外周側にあり、第2の狭厚部56cでは内周側にある。
As shown in FIG. 8B, in the DD cross section of the slot forming portion 56 in the core base 53, that is, the laminated cross section of the slot forming portion 56, the laminated thick portion 56a is rectangular, and the first and second The narrow portions 56b and 56c are tapered.
The cross-sections of the tapered narrow thickness portions 56b and 56c are continuously narrower in the direction away from the joint with the rectangular laminated thickness portion 56a.
Further, the position where the laminated cross section of the slot forming portion 56 changes from a rectangular shape to a tapered shape is the central axis of bending in the slot forming portion 56 when the core body 55 shown in FIG. From the position, the first narrow portion 56b is on the outer peripheral side, and the second narrow portion 56c is on the inner peripheral side.

また、本実施の形態では、図8(a)に示すコア体55の磁極ティース54に、コイルを巻装した後、コア体55を円筒形状に成形し、コア体55の両端部を付き合わせた当接部を溶接して固定子とする。
さらに、円筒状の固定子内部に、固定子と同軸に回転子が配設されて回転電機となる。
Further, in the present embodiment, after the coil is wound around the magnetic pole teeth 54 of the core body 55 shown in FIG. 8A, the core body 55 is formed into a cylindrical shape, and both ends of the core body 55 are attached together. Weld the contacted part to make a stator.
Furthermore, a rotor is disposed inside the cylindrical stator coaxially with the stator to form a rotating electrical machine.

本実施の形態の回転電機は、スロット数が多く、コア体のスロット形成部56の幅が狭く、スリットが設けられない直線帯状のコア体55を固定子に用いたものであり、スロット形成部56が、断面が矩形形状の積層厚部56aと、断面がテーパ形状の第1の狭厚部56bと、断面がテーパ形状の第2の狭厚部56cとを備えている。
そして、第1の狭厚部56bは、コア体55を円筒状にするために折り曲げる場合の、スロット形成部56における折り曲げ中心軸の位置より、外周側の伸張側に設けられている。第2の狭厚部56cは、コア体55を円筒状にするために折り曲げる場合の、スロット形成部56における折り曲げ中心軸の位置より、内周側の圧縮側に設けられている。
The rotating electrical machine according to the present embodiment uses a linear strip-shaped core body 55 having a large number of slots, a narrow width of the slot forming portion 56 of the core body, and no slits, as the stator. 56 includes a laminated thickness portion 56a having a rectangular cross section, a first narrow thickness portion 56b having a tapered cross section, and a second narrow thickness portion 56c having a tapered cross section.
The first narrow portion 56b is provided on the outer peripheral side of the extension side of the slot forming portion 56 in the case where the core body 55 is bent to be cylindrical. The second narrow portion 56c is provided closer to the compression side on the inner peripheral side than the position of the bending center axis in the slot forming portion 56 when the core body 55 is bent to be cylindrical.

本実施の形態では、コア体がスリットを設けていない直線帯状のものであるが、第2の狭厚部56cが、スロット形成部56の折り曲げ中心軸の位置より、内周側の圧縮側に設けられているので、コア体55を折り曲げて円筒状の固定子を形成する場合のコア体55の面外変形量を小さくでき、コア体の積厚方向の矯正加工が不要である。すなわち、本実施の形態の回転電機では、固定子の製造工程を少なくできるとともに、製造設備を省略できるので、コストダウンが可能である。
また、第1の狭厚部56bがスロット形成部56の折り曲げ中心軸の位置より、外周側の伸張側に設けられているので、コア体55を折り曲げて円筒状の固定子にする場合の、曲げ加工に要する力が小さくなり、曲げ加工に必要な設備の小型化と省スペース化と低コスト化が図れ、この面からも回転電機のコストダウンが可能である。
In the present embodiment, the core body is in the form of a straight band without slits, but the second narrow thickness portion 56c is located closer to the compression side on the inner peripheral side than the position of the bending center axis of the slot forming portion 56. Since it is provided, the amount of out-of-plane deformation of the core body 55 when the core body 55 is bent to form a cylindrical stator can be reduced, and correction of the core body in the stacking direction is unnecessary. That is, in the rotating electrical machine of the present embodiment, the manufacturing process of the stator can be reduced and the manufacturing equipment can be omitted, so that the cost can be reduced.
In addition, since the first narrow portion 56b is provided on the outer peripheral side of the slot forming portion 56 from the position of the bending center axis, the core body 55 is bent to form a cylindrical stator. The force required for the bending process is reduced, and the equipment required for the bending process can be reduced in size, space saving, and cost reduction. From this aspect, the cost of the rotating electrical machine can be reduced.

本発明に係わる回転電機は、コア体を折り曲げて円筒状の固定子を形成する時のコア体の面外変形量が小さいので、積厚方向の矯正加工が不要であり、固定子の製造工程を少なくでき、製造設備を省略できるので、コストダウンが要求される回転電機に利用できる。   In the rotating electrical machine according to the present invention, the amount of out-of-plane deformation of the core body when the core body is bent to form a cylindrical stator is small, so that correction processing in the stacking direction is unnecessary, and the stator manufacturing process Since the manufacturing equipment can be omitted, it can be used for rotating electrical machines that require cost reduction.

1 固定子、1a 円弧状固定子体、2 コア片、3 コア基部、4 磁極ティース、
5 ユニットコア、6 薄肉連結部、6a 積層厚部、6b 狭厚部、7 コイル、
9 スリット、10 衝合部、11 回転子、26 第1の薄肉連結部、
26a 積層厚部、26b 狭厚部、27 第2の薄肉連結部、27a 積層厚部、
27b 狭厚分、32 コア片、33 コア基部、34 磁極ティース、35 コア体、
36 薄肉連結部、36a 積層厚部、36b 狭厚部、39 スリット、
42 コア片、43 コア基部、44 磁極ティース、45 ユニットコア、
46 厚肉連結部、46a 積層厚部、46b 狭厚部、53 コア基部、
54 磁極ティース、55 コア体、56 スロット形成部、56a 積層厚部、
56b 第1の狭厚部、56c 第2の狭厚部、59 スロット、100 回転電機。
1 Stator, 1a Arc-shaped stator body, 2 core pieces, 3 core base, 4 magnetic teeth,
5 unit cores, 6 thin connecting parts, 6a laminated thick parts, 6b narrow thick parts, 7 coils,
9 slit, 10 abutting portion, 11 rotor, 26 first thin-walled connecting portion,
26a laminating thick part, 26b narrowing part, 27 second thin-walled connecting part, 27a laminating thick part,
27b Narrow portion, 32 core pieces, 33 core base, 34 magnetic teeth, 35 core body,
36 Thin connection part, 36a Laminating thick part, 36b Narrow part, 39 Slit,
42 core pieces, 43 core base, 44 magnetic teeth, 45 unit core,
46 thick connection portion, 46a laminated thickness portion, 46b narrow thickness portion, 53 core base portion,
54 magnetic teeth, 55 core body, 56 slot forming part, 56a laminated thickness part,
56b First narrow portion, 56c Second narrow portion, 59 slots, 100 rotating electrical machine.

Claims (7)

コア基部と磁極ティースを備える複数のコア片が厚肉連結部で結合されたユニットコア板を複数枚積層してユニットコアを形成する第一工程と、
積層された上記磁極ティースにコイルを巻回する第二工程と、
上記ユニットコアを上記厚肉連結部で折り曲げて、上記コア基部が外周側、上記磁極ティースが内周側となるように、上記コイルが設けられた円筒状の固定子を形成する第三工程と、
上記円筒状の固定子の内部に、上記固定子の軸と同軸に回転子を配設する第四工程と、を含み、
上記第三工程の折り曲げ前における上記厚肉連結部は、上記固定子の外周側となる積層厚部と上記固定子の内周側となる狭厚部とを備え、上記コア基部および上記積層厚部の積層方向の幅は互いに等しく一定であり、上記狭厚部の積層方向の幅は上記積層厚部の積層方向の幅より狭く、上記第三工程において上記厚肉連結部が変形する回転電機の製造方法。
A first step of forming a unit core by laminating a plurality of unit core plates in which a plurality of core pieces each having a core base and magnetic pole teeth are joined by a thick connecting portion;
A second step of winding a coil around the magnetic pole teeth stacked;
A third step of bending the unit core at the thick connecting portion to form a cylindrical stator provided with the coil so that the core base is on the outer peripheral side and the magnetic pole teeth are on the inner peripheral side ; ,
A fourth step of disposing a rotor coaxially with the axis of the stator inside the cylindrical stator ,
The thick connecting portion before bending in the third step includes a laminated thick portion that is an outer peripheral side of the stator and a thin thick portion that is an inner peripheral side of the stator, and the core base and the laminated thickness Rotating electric machines in which the width in the stacking direction of the portions is equal and constant, the width in the stacking direction of the narrow thickness portion is narrower than the width of the stacking thick portion in the stacking direction, and the thick connecting portion is deformed in the third step Manufacturing method.
折り曲げ前における上記厚肉連結部の連結部断面が、上記積層厚部では矩形形状であり、上記狭厚部では上記積層厚部から内周側に向かって、断面の幅が連続的に狭くなっていくテーパ形状であり、
上記連結部断面において上記矩形形状から上記テーパ形状にかわる位置が、上記厚肉連結部の折り曲げ中心軸の位置、あるいは上記折り曲げ中心軸の位置より内周側にある請求項に記載の回転電機の製造方法。
Bent connecting portion cross section of the thick connecting portion before, but in the multilayer thick section is rectangular shape, in the narrow thickness portion toward the inner circumferential side from the laminated thick portion, is the width of the cross section continuously narrows Taper shape
Position to replace the said tapered shape from the rectangular shape in the connecting section cross section, rotating electrical machine according to claim 1 which is inner than a position of the thickness position of the center axis bending meat connecting portion, or the bent central axis Manufacturing method.
折り曲げ前における上記厚肉連結部の連結部断面が、上記積層厚部では矩形形状であり、上記狭厚部では上記積層厚部との接合部から内周側に向かって、断面の幅が段階的に狭くなっていく形状であり、
上記連結部断面において上記矩形形状から上記断面の幅が段階的に狭くなる形状にかわる位置が、上記厚肉連結部の折り曲げ中心軸の位置、あるいは上記折り曲げ中心軸の位置より内周側にあることを特徴とする請求項に記載の回転電機の製造方法
Connecting part section of the thick connecting portion before folding, in the laminated thick section is rectangular shape, in the narrow thickness portion toward the inner peripheral side from the joint between the laminated thickness portion, the width of the cross section stages It is a shape that becomes narrower,
Width is changed stepwise narrowed shape position of the cross-section from the rectangular shape in the connecting section cross section, position of the center axis bending of the thick connecting portion, or in the inner peripheral side from the position of the bent central axis method of manufacturing a rotary electric machine according to claim 1, characterized in that.
複数の上記ユニットコアを組み合わせて上記円筒状の固定子を形成することを特徴とする請求項1〜3のいずれか一項に記載の回転電機の製造方法 Method of manufacturing a rotary electric machine according to any one of claims 1 to 3, characterized in that to form a plurality of the units by combining the core of the cylindrical stator. 折り曲げ前における上記ユニットコアは、上記コア片が直線帯状に並んで上記厚肉連結部で結合されていることを特徴とする請求項1〜4のいずれか一項に記載の回転電機の製造方法 5. The method of manufacturing a rotating electrical machine according to claim 1, wherein the unit cores before being bent are such that the core pieces are arranged in a straight strip and joined by the thick connecting portion. . コア基部から同じ側に突出した複数の磁極ティースを有する直線帯状のコア体と、上記コア体の上記磁極ティースに巻装されるコイルとを備え、且つ上記コア体を折り曲げて、上記コイルが設けられた上記コア体を円筒状にして形成された固定子と、上記円筒状の固定子の内部に、上記固定子の軸と同軸に回転子が配設された回転電機であって、上記コア体のスロット形成部が、積層厚部と第1の狭厚部と第2の狭厚部とからなり、上記第1の狭厚部が上記コア体の外周側に設けられ、上記第2の狭厚部が上記コア体の内周側に設けられた回転電機。 A linear belt-like core body having a plurality of magnetic teeth protruding from the core base to the same side; and a coil wound around the magnetic pole teeth of the core body; and the coil body is provided by bending the core body A stator formed by cylindrically forming the core body, and a rotating electric machine in which a rotor is disposed coaxially with an axis of the stator inside the cylindrical stator, the core A slot forming portion of the body is composed of a laminated thickness portion, a first narrow thickness portion, and a second narrow thickness portion, and the first narrow thickness portion is provided on an outer peripheral side of the core body, A rotating electrical machine in which a narrow portion is provided on the inner peripheral side of the core body. 上記スロット形成部の積層断面は、上記積層厚部では矩形形状であり、上記第1の狭厚部と上記第2の狭厚部では、上記積層厚部との接合部から離れる方向に向かって、断面の幅が連続的に狭くなっていくテーパ形状であり、且つ上記スロット形成部の積層断面が、上記矩形形状から上記テーパ形状にかわる位置は、上記コア体を円筒状にするために折り曲げる場合の、上記スロット形成部における折り曲げ中心軸の位置より、上記第1の狭厚部では外周側にあり、上記第2の狭厚部では内周側にあることを特徴とする請求項記載の回転電機。 Laminate cross section of the slot forming portion, in the laminated thickness portion has a rectangular shape, in the first narrow thickness portion and the second narrow thickness portion, in a direction away from the joint between the laminated thickness portion a tapered width of the cross section will continuously narrowed, and stacking the cross-section of the slot forming portion, positioned to replace the said tapered shape from the rectangular shape is bent to the core body in a cylindrical shape cases, the position of the center axis bending in the slot forming section, in the first narrow-thick portion located on the outer peripheral side, according to claim 6, wherein in said second narrow thick portion, characterized in that on the inner peripheral side Rotating electric machine.
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