JP3798968B2 - Manufacturing method of stator of rotating electric machine - Google Patents

Manufacturing method of stator of rotating electric machine Download PDF

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JP3798968B2
JP3798968B2 JP2001342604A JP2001342604A JP3798968B2 JP 3798968 B2 JP3798968 B2 JP 3798968B2 JP 2001342604 A JP2001342604 A JP 2001342604A JP 2001342604 A JP2001342604 A JP 2001342604A JP 3798968 B2 JP3798968 B2 JP 3798968B2
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coil
slot
slots
stator
iron core
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JP2003153478A (en
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裕之 秋田
裕治 中原
展明 三宅
順一 大田
智明 及川
浩二 増本
利夫 荒井
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Mitsubishi Electric Corp
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Description

【０００１】
【発明の属する技術分野】
この発明は、スロット幅よりスロットの開口幅が狭く形成された鉄心のスロット内に、コイルが占積率よく装着された回転電機の固定子の製造方法に関するものである。
【０００２】
【従来の技術】
近年、省エネのため効率の良いモータが市場から求められており、一般に鉄心のスロット内に装着されるコイルの密度、すなわち占積率を向上させることでモータの効率の向上が図られている。
そして、上記のようなコイルの占積率を向上させるために、図示はしないが例えば特開平１０−２７１７３３号公報では、予めスロット外でスロットの断面に応じた断面の束に整列巻きされたコイルを、その形状を保持した状態でスロットの幅と同じ幅の開口側から半径方向に挿入して装着することが開示されている。
【０００３】
【発明が解決しようとする課題】
従来の回転電機の固定子は以上のように、予めスロット外でスロットの断面に応じた断面の束に整列巻きされたコイルを、その形状を保持した状態でスロットの幅と同じ幅の開口側から半径方向に挿入して装着することにより、コイルの占積率の向上が図られている。
しかしながら、スロットの開口部の幅が大きいと、空隙部における磁気抵抗が増大し、誘導電動機等では励磁電流の増大、永久磁石式電動機では有効磁束の減少を招き、さらに、磁気的な凹、凸が大きくなることからスロット高調波が増大して、回転子、固定子に発生する高調波損失が増大し、さらに加えて、サーボモータ等においてはコギングの増大につながり、位置決め時の制御性が低下する等、種々の問題点が生じる。
【０００４】
このため、磁極テイース部の先端を周方向両側に突出させることにより、スロットの開口部の幅をスロットの幅より狭くした鉄心を用いることになるが、この場合、上記のように予めスロット外でスロットの断面に応じた断面の束に整列巻きされたコイルを、そのままスロットの開口部側から半径方向に挿入させることができなくなるため、コイルの占積率を高めてモータの効率を向上させることが困難になるという問題点があった。
【０００５】
この発明は上記のような問題点を解消するためになされたもので、スロットの開口部の幅がスロットの幅より狭く形成された鉄心においても、コイルの占積率を高めモータの効率を向上させることが可能な回転電機の固定子の製造方法を提供することを目的とするものである。
【０００６】
【課題を解決するための手段】
この発明の請求項１に係る回転電機の固定子の製造方法は、 巻回し、内周面に所定の間隔を介して形成されるスロットの幅よりスロットの開口部の幅が狭く形成された鉄心の少なくとも対応する一対のスロットにそれぞれ装着される第１および第２の辺部を整列巻きして両スロット内に嵌挿可能な厚さに、第１および第２の辺部の各一端側に連なる第３の辺部を第１および第２の辺部の延在方向にずらして、積層方向の厚さがスロットの開口部の幅より小さな厚さにそれぞれ積層して複数のコイル組合体を形成する工程と、
コイル組合体の姿勢を、コイル挿入方向に移動すると共に所定の状態でコイル組合体との係合を解くことができるコイル保持部材で保持する工程と、
各コイル組合体を鉄心の一端側から接近させて第３の辺部を両スロットの開口部を通過させるとともに、鉄心の一端側から他端側に移動させることにより第１および第２の辺部を両スロット内に導きそれぞれ装着する工程とを包含するものである。
【０００７】
又、この発明の請求項２に係る回転電機の固定子の製造方法は、請求項１において、線材の少なくともスロットにそれぞれ装着される第１および第２の辺部に位置する部位の積層方向に隣接する当接面同士を偏平状に成形して整列巻きするようにしたものである。
【０００８】
又、この発明の請求項３に係る回転電機の固定子の製造方法は、請求項１又は請求項２において、各コイル組合体の第３の辺部を成形して出っ張りを抑制する工程を包含したものである。
【０００９】
【発明の実施の形態】
以下、この発明の実施の形態を図に基づいて説明する。
実施の形態１．
図１はこの発明の実施の形態１における回転電機の固定子の構成を示し、（Ａ）は正面断面図、（Ｂ）は部分詳細図、図２は図１におけるコイル組合体の構成を示す斜視図、図３は図２におけるコイル組合体が鉄心に装着された状態を示す正面図、図４は図３におけるコイル組合体の鉄心への装着手順を示し、（Ａ）は装着前の斜視図、（Ｂ）は装着後の斜視図、図５ないし図１３は図１における回転電機の固定子の製造の各工程を示す図である。
【００１０】
図において、１は円筒状を有する鉄心で、内周面に所定の間隔を介して突出し先端が両側に出っ張った複数の磁極テイース部１ａが形成されており、これら各磁極テイース部１ａ間には、開口部の幅ω１がその幅ω２より狭いスロット１ｂがそれぞれ形成されている。２は線材３が矩形状に巻回されたコイル組合体で、所定のスロット１ｂとこれからｎ個離れた位置のスロット１ｂに装着される第１および第２の辺部２ａ、２ｂは整列巻きされてスロット１ｂ内に嵌挿可能な厚さに積層され、これら第１および第２の辺部２ａ、２ｂの一端側に連なる第３の辺部２ｃは、各線材３が第１および第２の辺部２ａ、２ｂの延在方向にずれて、積層方向の厚さｔが鉄心１のスロット１ｂの開口部の幅ω１より小さく積層され、第１および第２の辺部２ａ、２ｂの他端側に連なる第４の辺部２ｄは、鉄心１の形状に沿った弧状に積層されている。そして、このコイル組合体３が、ｎ個ずつ離れた一対のスロット１ｂ内に、第１および第２の辺部２ａ、２ｂが装着されコイル４が構成されている。
【００１１】
次に、上記のように構成される実施の形態１における回転電機の固定子の製造方法を図に基づいて説明する。
まず、図２に示すように線材３を矩形状に巻回し、スロット１ｂに装着される第１および第２の辺部２ａ、２ｂは、整列巻きとして、スロット１ｂ内に嵌挿可能な厚さに積層し、第１および第２の辺部２ａ、２ｂの一端側に連なる第３の辺部２ｃは、各線材３を第１および第２の辺部２ａ、２ｂの延在方向にずらして一列に積層し、第１および第２の辺部２ａ、２ｂの他端側に連なる第４の辺部２ｄは、鉄心１の形状に沿った弧状に積層することにより複数のコイル組合体２を形成する。
【００１２】
次に、図５に示すようにコイル組合体２の第１および第２の辺部２ａ、２ｂの両端近傍を、一対のコイル保持部材５、６で保持してコイル挿入治具７の上方に位置させる。そして、図６に示すようにワイヤガイドブレード７ａに沿って下降させストリッパ７ｂで受けることによりコイル挿入治具７に保持させる。次いで、図７に示すようにコイル挿入治具７を鉄心１の下方に、そのワイヤガイドブレード７ａの先端が鉄心１の内側と対応するように位置させ、図８に示すようにコイル挿入治具７を上昇させることにより、ワイヤガイドブレード７ａを鉄心１の内周面に沿って移動させ内側を貫通させる。なお、この時、鉄心１とコイル組合体２との関係は図４（Ａ）に示すような状態になっている。
【００１３】
次に、図９に示すようにワイヤガイドブレード７ａはそのままの状態で、ストリッパ７ｂを上昇させることによりコイル組合体２をワイヤガイドブレード７ａに沿って上方に移動させ、鉄心１の下部に配置されコイル組合体２をスロット１ｂ内に導くコイル案内部材８により、まず第３の辺部２ｃをスロット１ｂの開口部を図４（Ａ）中矢印で示す方向に通過させ、さらにコイル組合体２を上方に移動させることにより、図１０に示すように第３の辺部２ｃに連なる第１および第２の辺部２ａ、２ｂをスロット１ｂ内に導き、両辺部２ａ、２ｂの全領域がスロット１ｂ内に嵌挿される位置で、ストリッパ７ｂの上昇を停止させることにより、鉄心１とコイル組合体２との関係を図４（Ｂ）に示す状態とする。なお、コイル保持部材５は図９に示す状態で、又、コイル保持部材５およびコイル案内部材８は図１０に示す状態で、それぞれコイル組合体２との係合を解いて図中矢印で示すように外側へ移動して待機する。
【００１４】
次に、図１１に示すような成形部材９を上方に配置し、図示はしないがワイヤガイドブレード７ａをストリッパ７ｂの上面より下方に待避させた後、図１２に示すように成形部材９を下降させ第３の辺部２ｃを上方から押しつぶすことにより、図１３に示すように第３の辺部２ｃを第４の辺部２ｄと同様の形状に成形する。
以下、上記と同様の動作を繰り返すことにより、所定の数のコイル組合体２をｎ個ずつ離れた一対のスロット１ｂ内に順次挿入し、全てのスロット１ｂ内にコイル組合体２が装着されてコイル４が構成され、鉄心１と共に回転電機の固定子１０が完成する。
【００１５】
このように上記実施の形態１によれば、線材３が矩形状に巻回され、所定のスロット１ｂとこれからｎ個離れた位置のスロット１ｂに装着される第１および第２の辺部２ａ、２ｂを、整列巻きしてスロット１ｂ内に嵌挿可能な厚さに積層し、これら第１および第２の辺部２ａ、２ｂの一端側に連なる第３の辺部２ｃを、各線材３が第１および第２の辺部２ａ、２ｂの延在方向にずれるように一列に積層し、第１および第２の辺部２ａ、２ｂの他端側に連なる第４の辺部２ｄを、鉄心１の形状に沿った弧状に形成することにより複数のコイル組合体２を構成し、コイル組合体２の姿勢を保持して鉄心１の一端側から接近させ、第３の辺部２ｃを両スロット１ｂの開口部を通過させるとともに、さらに一端側から他端側に移動させることにより、第１および第２の辺部２ａ、２ｂを両スロット１ｂ内に導いて装着するようにしているので、開口部の幅がスロット１ｂの幅より狭く形成された鉄心１においても、第１および第２の辺部２ａ、２ｂが整列巻きされたコイル組合体２をスロット１ｂ内に装着することができるため、コイル４の占積率を高めモータの効率を向上させることが可能になる。
【００１６】
なお、上記構成では、コイル組合体２の第３の辺部２ｃを、各線材３が第１および第２の辺部２ａ、２ｂの延在方向にずれるように一列に積層しているが、勿論これに限定されるものではなく、要するに図２中ｔで示す部分をスロット１ｂの開口部の幅ω１より小さな厚さに積層して、第３の辺部２ｃが開口部を通過できるようにすれば良く、上記と同様の効果を得ることができる。
又、コイル組合体２の姿勢を両コイル保持部材５、６で保持して、鉄心１に装着するようにしているが、接着等で固定して姿勢を保持するようにしても良く、さらに又、樹脂で固めて姿勢を保持するようにすれば、別にスロット絶縁を施す必要がなく、コストの低減を図ることができる。さらに又、コイル組合体２の第３の辺部２ｃを、成形部材９により押しつぶして成形することにより小形化が可能になる。
【００１７】
実施の形態２．
図１４はこの発明の実施の形態２における回転電機の固定子の要部の構成を示す断面図である。
図において、上記実施の形態１におけると同様な部分は同一符号を付して説明を省略する。１１は図示はしないが上記実施の形態１におけるコイル組合体２と同様に第１ないし第３の辺部を有するコイル組合体で、第１および第２の辺部１１ａ、１１ｂに位置する部位が、少なくとも積層方向に隣接する当接面同士が偏平状に成形されて整列巻きされている。
【００１８】
このように上記実施の形態２によれば、コイル組合体１１の第１および第２の辺部１１ａ、１１ｂに位置する部位の少なくとも積層方向に隣接する当接面同士を偏平状に成形して整列巻きするようにしているので、整列が容易となりさらに占積率を高め、モータの効率を向上させることが可能になる。
なお、上記構成では、偏平状に成形する部位を第１および第２の辺部１１ａ、１１ｂとしたが、第１ないし第４の辺部全ての部位を偏平状に成形しても良いことは言うまでもない。又、上記各実施の形態１、２では、１つのスロットに１組のコイル組合体が挿入された場合について説明したが、これに限定されるものではなく、複数個のコイル組合体を積重して挿入するものに適用しても、同様の効果を発揮し得ることは言うまでもない。
【００１９】
【発明の効果】
以上のように、この発明の請求項１によれば、矩形状に巻回し、内周面に所定の間隔を介して形成されるスロットの幅よりスロットの開口部の幅が狭く形成された鉄心の少なくとも対応する一対のスロットにそれぞれ装着される第１および第２の辺部を整列巻きして両スロット内に嵌挿可能な厚さに、第１および第２の辺部の各一端側に連なる第３の辺部を第１および第２の辺部の延在方向にずらして、積層方向の厚さがスロットの開口部の幅より小さな厚さにそれぞれ積層して複数のコイル組合体を形成する工程と、
コイル組合体の姿勢を、コイル挿入方向に移動すると共に所定の状態でコイル組合体との係合を解くことができるコイル保持部材で保持する工程と、
各コイル組合体を鉄心の一端側から接近させて第３の辺部を両スロットの開口部を通過させるとともに、鉄心の一端側から他端側に移動させることにより第１および第２の辺部を両スロット内に導きそれぞれ装着する工程とを包含するようにしたので、コイルの占積率を高め効率の向上を図ることが可能な回転電機の固定子の製造方法を提供することができる。
【００２０】
又、この発明の請求項２によれば、請求項１において、線材の少なくともスロットにそれぞれ装着される第１および第２の辺部に位置する部位の積層方向に隣接する当接面同士 を偏平状に成形して整列巻きするようにしたので、さらにコイルの占積率を高め効率の向上を図ることが可能な回転電機の固定子の製造方法を提供することができる。
【００２１】
又、この発明の請求項３によれば、請求項１又は請求項２において、各コイル組合体の第３の辺部を成形して出っ張りを抑制する工程を包含したので、小形化を図ることが可能な回転電機の固定子の製造方法を提供することができる。
【図面の簡単な説明】
【図１】 この発明の実施の形態１における回転電機の固定子の構成を示し、（Ａ）は正面断面図、（Ｂ）は部分詳細図である。
【図２】 図１におけるコイル組合体の構成を示す斜視図である。
【図３】 図２におけるコイル組合体が鉄心に装着された状態を示す正面図である。
【図４】 図３におけるコイル組合体の鉄心への装着手順を示し、（Ａ）は装着前の斜視図、（Ｂ）は装着後の斜視図である。
【図５】 図１における回転電機の固定子の製造の一工程を示す図である。
【図６】 図１における回転電機の固定子の製造の一工程を示す図である。
【図７】 図１における回転電機の固定子の製造の一工程を示す図である。
【図８】 図１における回転電機の固定子の製造の一工程を示す図である。
【図９】 図１における回転電機の固定子の製造の一工程を示す図である。
【図１０】 図１における回転電機の固定子の製造の一工程を示す図である。
【図１１】 図１における回転電機の固定子の製造の一工程を示す図である。
【図１２】 図１における回転電機の固定子の製造の一工程を示す図である。
【図１３】 図１における回転電機の固定子の製造の一工程を示す図である。
【図１４】 この発明の実施の形態２における回転電機の固定子の要部の構成を示す断面図である。
【符号の説明】
１ 鉄心、１ａ 磁極テイース部、１ｂ スロット、２，１１ コイル組合体、
２ａ，１１ａ 第１の辺部、２ｂ，１１ｂ 第２の辺部、２ｃ 第３の辺部、
２ｄ 第４の辺部、３ 線材、４ コイル、５，６ コイル保持部材、
７ コイル挿入治具、７ａ ワイヤガイドブレード、７ｂ ストリッパ、
８ コイル案内部材。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of manufacturing a stator of a rotating electrical machine in which a coil is mounted with a high space factor in a slot of an iron core formed so that the opening width of the slot is narrower than the slot width.
[0002]
[Prior art]
In recent years, efficient motors for energy saving have been demanded from the market. Generally, the efficiency of motors has been improved by improving the density of the coils mounted in the slots of the iron core, that is, the space factor.
In order to improve the space factor of the coil as described above, although not shown, for example, in Japanese Patent Application Laid-Open No. 10-271733, a coil which is wound in advance in a bundle of cross sections corresponding to the cross section of the slot outside the slot. Is inserted and mounted in the radial direction from the opening side having the same width as the slot while maintaining its shape.
[0003]
[Problems to be solved by the invention]
As described above, the stator of a conventional rotating electric machine has an opening side having the same width as the width of the slot while keeping the shape of the coil wound in advance in a bundle of cross sections corresponding to the cross section of the slot outside the slot as described above. The space factor of the coil is improved by inserting and mounting in the radial direction.
However, if the width of the slot opening is large, the magnetic resistance in the gap increases, leading to an increase in excitation current in induction motors and the like, and a decrease in effective magnetic flux in permanent magnet motors. Increases the slot harmonics, which increases the harmonic loss generated in the rotor and stator, and also increases cogging in servo motors, etc., resulting in poor controllability during positioning. This causes various problems.
[0004]
Therefore, an iron core having a slot opening narrower than the slot width is used by projecting the tip of the magnetic pole tee on both sides in the circumferential direction. Coil wound in a bundle of cross sections corresponding to the cross section of the slot cannot be inserted in the radial direction from the opening side of the slot as it is, so that the space factor of the coil is increased and the motor efficiency is improved. There was a problem that it became difficult.
[0005]
The present invention has been made to solve the above problems, and even in an iron core in which the width of the opening of the slot is narrower than the width of the slot, the space factor of the coil is increased and the efficiency of the motor is improved. It is an object of the present invention to provide a method for manufacturing a stator of a rotating electrical machine that can be made.
[0006]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a method of manufacturing a stator for a rotating electrical machine, in which an iron core is wound and formed so that the width of a slot opening is narrower than the width of a slot formed at a predetermined interval on an inner peripheral surface. The first and second side portions to be mounted in at least one pair of corresponding slots are aligned and wound so that they can be inserted into both slots, respectively, at one end side of the first and second side portions. A plurality of coil assemblies are formed by shifting the third side portions that are continuous in the extending direction of the first and second side portions and laminating each of the thicknesses in the stacking direction to be smaller than the width of the opening of the slot. Forming, and
A step of holding the posture of the coil combination with a coil holding member capable of moving in the coil insertion direction and releasing the engagement with the coil combination in a predetermined state;
Each coil assembly is approached from one end side of the iron core, the third side portion is passed through the openings of both slots, and the first and second side portions are moved from one end side to the other end side of the iron core. And a step of attaching each to the slots.
[0007]
According to a second aspect of the present invention, there is provided a method of manufacturing a stator for a rotating electrical machine according to the first aspect, in the laminating direction of the portions located at the first and second side portions respectively attached to at least the slots of the wire. Adjacent contact surfaces are formed into a flat shape and aligned and wound.
[0008]
According to a third aspect of the present invention, there is provided a method for manufacturing a stator for a rotating electrical machine according to the first or second aspect, further comprising the step of forming a third side portion of each coil assembly to suppress the protrusion. It is a thing.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 shows the configuration of a stator of a rotating electric machine according to Embodiment 1 of the present invention, (A) is a front sectional view, (B) is a partial detail view, and FIG. 2 shows the configuration of a coil assembly in FIG. FIG. 3 is a front view showing a state where the coil assembly in FIG. 2 is attached to the iron core, FIG. 4 shows a procedure for attaching the coil assembly in FIG. 3 to the iron core, and FIG. FIG. 5B is a perspective view after mounting, and FIGS. 5 to 13 are diagrams showing each process of manufacturing the stator of the rotating electric machine in FIG.
[0010]
In the figure, reference numeral 1 denotes an iron core having a cylindrical shape, and a plurality of magnetic pole tees 1a projecting from the inner peripheral surface through a predetermined interval and protruding at both ends are formed. Between these magnetic pole tees 1a, , width omega 1 of the opening is narrow slot 1b than its width omega 2 are formed, respectively. Reference numeral 2 denotes a coil assembly in which the wire 3 is wound in a rectangular shape. The first and second side portions 2a and 2b to be mounted in a predetermined slot 1b and a slot 1b at a position separated from the predetermined slot 1b are aligned and wound. The third side portion 2c that is stacked to have a thickness that can be inserted into the slot 1b and that is continuous with one end side of the first and second side portions 2a and 2b, side portions 2a, displaced in the extending direction of 2b, the thickness t of the stacking direction are laminated smaller than the width omega 1 of the opening of the slot 1b of the core 1, first and second sides 2a, 2b other The 4th side part 2d which continues to an end side is laminated | stacked on the arc shape along the shape of the iron core 1. As shown in FIG. The coil assembly 3 is provided with the first and second side portions 2a and 2b in a pair of slots 1b separated by n pieces to constitute the coil 4.
[0011]
Next, a method for manufacturing the stator of the rotating electric machine according to Embodiment 1 configured as described above will be described with reference to the drawings.
First, as shown in FIG. 2, the wire 3 is wound in a rectangular shape, and the first and second side portions 2a and 2b attached to the slot 1b have thicknesses that can be inserted into the slot 1b as aligned windings. The third side 2c that is laminated to the first end of the first and second sides 2a, 2b is shifted in the extending direction of the first and second sides 2a, 2b. The fourth side portion 2d that is stacked in a row and is connected to the other end side of the first and second side portions 2a and 2b is stacked in an arc shape along the shape of the iron core 1 so that a plurality of coil assemblies 2 are formed. Form.
[0012]
Next, as shown in FIG. 5, the vicinity of both ends of the first and second sides 2 a and 2 b of the coil assembly 2 is held by a pair of coil holding members 5 and 6 and above the coil insertion jig 7. Position. Then, as shown in FIG. 6, it is lowered along the wire guide blade 7a and received by the stripper 7b to be held by the coil insertion jig 7. Next, the coil insertion jig 7 is positioned below the iron core 1 as shown in FIG. 7 so that the tip of the wire guide blade 7a corresponds to the inside of the iron core 1, and as shown in FIG. By raising 7, the wire guide blade 7a is moved along the inner peripheral surface of the iron core 1 and penetrates the inside. At this time, the relationship between the iron core 1 and the coil assembly 2 is as shown in FIG.
[0013]
Next, as shown in FIG. 9, with the wire guide blade 7a left as it is, the stripper 7b is lifted to move the coil assembly 2 upward along the wire guide blade 7a, and is disposed below the iron core 1. By the coil guide member 8 that guides the coil assembly 2 into the slot 1b, first, the opening of the slot 1b is passed through the third side 2c in the direction indicated by the arrow in FIG. By moving upward, as shown in FIG. 10, the first and second sides 2a, 2b connected to the third side 2c are guided into the slot 1b, and the entire area of both sides 2a, 2b is the slot 1b. The relationship between the iron core 1 and the coil assembly 2 is brought into the state shown in FIG. 4B by stopping the ascent of the stripper 7b at the position where it is inserted. The coil holding member 5 is in the state shown in FIG. 9, and the coil holding member 5 and the coil guide member 8 are in the state shown in FIG. Move to the outside and wait.
[0014]
Next, the molding member 9 as shown in FIG. 11 is arranged on the upper side, and although not shown, the wire guide blade 7a is retracted below the upper surface of the stripper 7b, and then the molding member 9 is lowered as shown in FIG. Then, by crushing the third side 2c from above, the third side 2c is formed in the same shape as the fourth side 2d as shown in FIG.
Thereafter, by repeating the same operation as described above, a predetermined number of coil combinations 2 are sequentially inserted into a pair of slots 1b separated by n pieces, and the coil combinations 2 are mounted in all slots 1b. The coil 4 is configured, and the stator 10 of the rotating electric machine is completed together with the iron core 1.
[0015]
As described above, according to the first embodiment, the wire 3 is wound in a rectangular shape, and the first and second side portions 2a to be attached to the predetermined slot 1b and the slot 1b at a position separated from the predetermined slot 1b, 2b are aligned and wound to a thickness that can be inserted into the slot 1b, and each of the wires 3 has a third side 2c connected to one end of the first and second sides 2a, 2b. The first and second side portions 2a and 2b are stacked in a row so as to be displaced in the extending direction, and the fourth side portion 2d connected to the other end side of the first and second side portions 2a and 2b is replaced with an iron core. A plurality of coil combinations 2 are formed by forming an arc shape along the shape of 1, the posture of the coil combination 2 is maintained and approached from one end side of the iron core 1, and the third side portion 2 c is inserted into both slots. By passing through the opening of 1b and further moving from one end side to the other end side, Since the first and second side portions 2a and 2b are guided and mounted in both slots 1b, the first and second sides of the iron core 1 formed so that the width of the opening is narrower than the width of the slot 1b. Since the coil assembly 2 in which the side portions 2a and 2b are aligned and wound can be mounted in the slot 1b, the space factor of the coil 4 can be increased and the efficiency of the motor can be improved.
[0016]
In the above configuration, the third side 2c of the coil assembly 2 is laminated in a row so that each wire 3 is displaced in the extending direction of the first and second side 2a, 2b. of course the invention is not limited thereto, in short the portion indicated in FIG. 2 t are laminated in thickness smaller than the width omega 1 of the opening of the slot 1b, so that the third side portion 2c to pass through the opening The same effects as described above can be obtained.
In addition, the posture of the coil assembly 2 is held by the two coil holding members 5 and 6 and is attached to the iron core 1, but may be fixed by bonding or the like to hold the posture. If the posture is maintained by hardening with resin, it is not necessary to separately provide slot insulation, and the cost can be reduced. Furthermore, the third side portion 2c of the coil assembly 2 can be reduced in size by being crushed by the molding member 9 and molded.
[0017]
Embodiment 2. FIG.
FIG. 14 is a sectional view showing a configuration of a main part of the stator of the rotating electric machine according to the second embodiment of the present invention.
In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Although not shown, 11 is a coil assembly having first to third sides as in the coil assembly 2 in the first embodiment, and the parts located on the first and second sides 11a and 11b are At least the contact surfaces adjacent to each other in the stacking direction are formed into a flat shape and wound in an aligned manner.
[0018]
As described above, according to the second embodiment, at least the contact surfaces adjacent to each other in the stacking direction of the portions located in the first and second side portions 11a and 11b of the coil assembly 11 are formed into a flat shape. Since the alignment winding is performed, the alignment becomes easy, the space factor can be further increased, and the efficiency of the motor can be improved.
In the above configuration, the first and second side portions 11a and 11b are formed as flat portions. However, all the first to fourth side portions may be formed into a flat shape. Needless to say. In the first and second embodiments, the case where one coil combination is inserted into one slot has been described. However, the present invention is not limited to this, and a plurality of coil combinations are stacked. Needless to say, the same effect can be obtained even if it is applied to an object to be inserted.
[0019]
【The invention's effect】
As described above, according to the first aspect of the present invention, the iron core is wound in a rectangular shape, and the width of the opening of the slot is narrower than the width of the slot formed at a predetermined interval on the inner peripheral surface. The first and second sides to be fitted in at least one pair of corresponding slots are aligned and wound so that they can be inserted into both slots. A plurality of coil assemblies are formed by shifting the third side portions that are continuous in the extending direction of the first and second side portions and laminating each of the thicknesses in the stacking direction to be smaller than the width of the opening of the slot. Forming, and
A step of holding the posture of the coil combination with a coil holding member capable of moving in the coil insertion direction and releasing the engagement with the coil combination in a predetermined state;
Each coil assembly is approached from one end side of the iron core, the third side portion is passed through the openings of both slots, and the first and second side portions are moved from one end side to the other end side of the iron core. And a step of attaching each of them to the slots, so that it is possible to provide a method of manufacturing a stator of a rotating electrical machine capable of increasing the space factor of the coil and improving the efficiency.
[0020]
According to a second aspect of the present invention, in the first aspect, the contact surfaces adjacent to each other in the laminating direction of the portions located at the first and second side portions respectively attached to at least the slots of the wire are flattened. Since it is formed into a shape and aligned and wound, it is possible to provide a method of manufacturing a stator of a rotating electrical machine that can further increase the space factor of the coil and improve the efficiency.
[0021]
Further, according to claim 3 of the present invention, in the method according to claim 1 or 2, since the step of forming the third side portion of each coil assembly and suppressing the protrusion is included, the size reduction can be achieved. The manufacturing method of the stator of the rotary electric machine which can be provided can be provided.
[Brief description of the drawings]
FIG. 1 shows a configuration of a stator of a rotating electrical machine according to Embodiment 1 of the present invention, where (A) is a front sectional view and (B) is a partial detail view.
FIG. 2 is a perspective view showing a configuration of a coil assembly in FIG. 1;
3 is a front view showing a state in which the coil assembly in FIG. 2 is mounted on an iron core. FIG.
4 shows a procedure for mounting the coil assembly in FIG. 3 on an iron core, (A) is a perspective view before mounting, and (B) is a perspective view after mounting.
5 is a diagram showing a process of manufacturing the stator of the rotating electric machine in FIG. 1. FIG.
6 is a diagram showing a process of manufacturing the stator of the rotating electric machine in FIG. 1. FIG.
7 is a diagram showing a process of manufacturing the stator of the rotating electric machine in FIG. 1. FIG.
8 is a diagram showing a process of manufacturing the stator of the rotating electric machine in FIG. 1. FIG.
9 is a diagram showing a process of manufacturing the stator of the rotating electric machine in FIG. 1. FIG.
10 is a diagram showing a process of manufacturing the stator of the rotating electric machine in FIG. 1. FIG.
11 is a diagram showing a process of manufacturing the stator of the rotating electrical machine in FIG. 1. FIG.
12 is a diagram showing a process of manufacturing the stator of the rotating electric machine in FIG. 1. FIG.
13 is a diagram showing a step of manufacturing the stator of the rotating electric machine in FIG. 1. FIG.
FIG. 14 is a cross sectional view showing a configuration of a main part of a stator of a rotating electric machine according to Embodiment 2 of the present invention.
[Explanation of symbols]
1 iron core, 1a magnetic pole tee, 1b slot, 2,11 coil assembly,
2a, 11a first side, 2b, 11b second side, 2c third side,
2d 4th side part, 3 wire, 4 coil, 5, 6 coil holding member,
7 Coil insertion jig, 7a Wire guide blade, 7b Stripper,
8 Coil guide member.

Claims (3)

巻回し、内周面に所定の間隔を介して形成されるスロットの幅より上記スロットの開口部の幅が狭く形成された鉄心の少なくとも対応する一対の上記スロットにそれぞれ装着される第１および第２の辺部を整列巻きして上記両スロット内に嵌挿可能な厚さに、上記第１および第２の辺部の各一端側に連なる第３の辺部を上記第１および第２の辺部の延在方向にずらして、積層方向の厚さが上記スロットの開口部の幅より小さな厚さにそれぞれ積層して複数のコイル組合体を形成する工程と、The first and second slots are respectively attached to at least a pair of slots corresponding to an iron core that is wound and has an opening width of the slot narrower than the width of the slot formed on the inner peripheral surface through a predetermined interval. The third side portion connected to each one end side of the first and second side portions is thickened so that the two side portions are aligned and wound so as to be fitted into the both slots, and the first and second side portions are connected. A step of shifting in the extending direction of the sides, and laminating each of the thicknesses in the stacking direction to a thickness smaller than the width of the opening of the slot to form a plurality of coil assemblies;
上記コイル組合体の姿勢を、コイル挿入方向に移動すると共に所定の状態で上記コイル組合体との係合を解くことができるコイル保持部材で保持する工程と、  Holding the coil assembly in a coil holding member capable of moving the coil combination in the coil insertion direction and releasing the engagement with the coil combination in a predetermined state;
上記各コイル組合体を上記鉄心の一端側から接近させて上記第３の辺部を上記両スロットの開口部を通過させるとともに、上記鉄心の一端側から他端側に移動させることにより第１および第２の辺部を上記両スロット内に導きそれぞれ装着する工程とを包含したことを特徴とする回転電機の固定子の製造方法。  The first and second coil assemblies are moved closer from one end side of the iron core to allow the third side portion to pass through the openings of the two slots and move from one end side to the other end side of the iron core. A method of manufacturing a stator for a rotating electrical machine, comprising the steps of guiding the second side portion into both the slots and mounting the second side portion. 線材の少なくともスロットにそれぞれ装着される第１および第２の辺部に位置する部位は、積層方向に隣接する当接面同士を偏平状に成形して整列巻きするようにしていることを特徴とする請求項１記載の回転電機の固定子の製造方法。The portions located at the first and second side portions respectively attached to at least the slots of the wire are characterized in that the contact surfaces adjacent in the laminating direction are formed into a flat shape and aligned and wound. The manufacturing method of the stator of the rotary electric machine of Claim 1. 各コイル組合体の第３の辺部を成形して出っ張りを抑制する工程を包含したことを特徴とする請求項１又は請求項２に記載の回転電機の固定子の製造方法。The method for manufacturing a stator of a rotating electrical machine according to claim 1 or 2, further comprising a step of forming a third side portion of each coil combination to suppress the protrusion.
JP2001342604A 2001-11-08 2001-11-08 Manufacturing method of stator of rotating electric machine Expired - Lifetime JP3798968B2 (en)

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