JP2010017002A - Stator core of rotating electric machine - Google Patents

Stator core of rotating electric machine Download PDF

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JP2010017002A
JP2010017002A JP2008175384A JP2008175384A JP2010017002A JP 2010017002 A JP2010017002 A JP 2010017002A JP 2008175384 A JP2008175384 A JP 2008175384A JP 2008175384 A JP2008175384 A JP 2008175384A JP 2010017002 A JP2010017002 A JP 2010017002A
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stator core
steel sheet
auxiliary yoke
yoke
rotating electrical
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Nobuo Sakate
宣夫 坂手
Hisayuki Momijishima
寿行 椛嶌
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Mazda Motor Corp
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Mazda Motor Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To cover magnetic resistance generated between U-shaped pieces with an auxiliary yoke, in a stator core of a rotating electric machine. <P>SOLUTION: A plurality of the U-shaped pieces wherein a magnetic steel plate is bent to form a tooth 4 and yoke 5 are laminated into a block body 2a, and a plurality of the block bodies 2a are circumferentially arranged in parallel to form a stator core body 2. The auxiliary yoke 3 composed of magnetic steel plates laminated radially into a concentric or spiral state is provided at both ends in the rotational shaft direction of the rotor of the stator core body 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ヨーク部と該ヨーク部内周から中心軸に向かって突出するティース部とを備え、モータや発電機などの回転電機に使用されるステータコアに関するものである。   The present invention relates to a stator core that includes a yoke portion and a teeth portion that protrudes from the inner periphery of the yoke portion toward a central axis, and is used in a rotating electrical machine such as a motor or a generator.

従来より、回転電機のステータコアは、ヨーク部とティース部とが一体的に打ち抜き加工された電磁鋼板をロータ軸方向に複数枚積層した構造を備えている。   Conventionally, a stator core of a rotating electrical machine has a structure in which a plurality of electromagnetic steel sheets in which a yoke part and a tooth part are integrally punched are stacked in the rotor axial direction.

近年、いずれの方向にもほぼ均等な磁気特性を有する無方向性電磁鋼板よりもコストは高くなるが、一定の方向に特に優れた磁気特性を有する方向性電磁鋼板を用いたステータコアが採用されてきている。この場合、ティース部とヨーク部とは略直角方向の関係にあるところからティース部とヨーク部とを別体とし、それぞれ磁束を流したい方向に磁化容易軸を配置している。   In recent years, the cost is higher than non-oriented electrical steel sheets having substantially uniform magnetic properties in any direction, but stator cores using directional electrical steel sheets having particularly excellent magnetic properties in a certain direction have been adopted. ing. In this case, since the teeth portion and the yoke portion are in a substantially perpendicular relationship, the teeth portion and the yoke portion are separated from each other, and the easy magnetization axis is arranged in the direction in which the magnetic flux is desired to flow.

例えば、特許文献１では、方向性電磁鋼板からなるティース部とヨーク部とが組み合わされたステータコアが開示されている。このステータコアでは、薄肉部で連結されるピースとして打ち抜き、これを屈曲させると共に、凹状係合部と他の凹状係合部とでティース部とヨーク部とが係合連結されている。   For example, Patent Document 1 discloses a stator core in which a tooth portion and a yoke portion made of grain-oriented electrical steel sheets are combined. In this stator core, it is punched out as a piece to be connected at the thin portion and bent, and the tooth portion and the yoke portion are engaged and connected by the concave engaging portion and the other concave engaging portion.

また、特許文献２では、コ字状となるようにティース部とヨーク部とを１枚の鉄板で形成し、これを積層し、この積層体を円周方向に並設したステータコアが開示されている。
特開２００４−２０８４８３号公報 特開２００１−１５７３８９号公報 Further, Patent Document 2 discloses a stator core in which a teeth portion and a yoke portion are formed of a single iron plate so as to have a U-shape, are stacked, and the stacked body is juxtaposed in the circumferential direction. Yes.
JP 2004-208483 A JP 2001-157389 A

ところで、上記特許文献１のステータコアでは、ティース部とヨーク部とが、別体状態に近く、これらを溶接により堅固に接合させると磁気特性が悪化することから、接合されていない。この状態で、ロータの回転時における磁極の変化に伴い圧縮と引張の力がティース部からヨーク部に加わるとぐらつきやすく、ステータコアの剛性アップが必要となる。また、ティース部とヨーク部とが完全に接合されていないことからエアギャップが生じ、磁気的な抵抗が大きくなる。   By the way, in the stator core of the said patent document 1, since a teeth part and a yoke part are near separate bodies, and when these are firmly joined by welding, a magnetic characteristic will deteriorate, it is not joined. In this state, if compression and tension forces are applied from the tooth portion to the yoke portion in accordance with the change of the magnetic poles during rotation of the rotor, the stator core is likely to wobble and the rigidity of the stator core needs to be increased. Further, since the tooth portion and the yoke portion are not completely joined, an air gap is generated, and the magnetic resistance is increased.

また特許文献２のステータコアでは、図５に示すように、矢印方向に磁束が流れた場合、複数の鉄片間（点線部）を通過しなければならないが、このコ字状ブロック間には、磁気的なギャップが存在するために、磁気抵抗が増大して、ヨーク部の磁束量の減少を招く。そこで、上記課題に対して、図６に示すように、電磁鋼板をロータ回転軸方向に積層した補助ヨーク１０３を設けて、ステータコア１０１の磁束減少を抑制することが考えられる。しかし、この方法でも、回転軸方向にはギャップが存在するため、磁気抵抗が増大してヨーク部１０５の磁束を十分に増やすことができない。   Moreover, in the stator core of patent document 2, as shown in FIG. 5, when a magnetic flux flows in the direction of the arrow, it must pass between a plurality of iron pieces (dotted line portion). Since there is a typical gap, the magnetic resistance increases and the amount of magnetic flux in the yoke portion decreases. In view of the above problem, as shown in FIG. 6, it is conceivable to provide an auxiliary yoke 103 in which electromagnetic steel plates are laminated in the rotor rotation axis direction to suppress a decrease in magnetic flux of the stator core 101. However, even with this method, since there is a gap in the direction of the rotation axis, the magnetic resistance increases and the magnetic flux of the yoke portion 105 cannot be increased sufficiently.

本発明は、かかる点に鑑みてなされたものであり、その目的とするところは、コ字状ピース間に生じる磁気的な抵抗を補助ヨーク部でカバーすることにある。   The present invention has been made in view of this point, and an object of the present invention is to cover the magnetic resistance generated between the U-shaped pieces with the auxiliary yoke portion.

上記の目的を達成するために、この発明では、ステータコア本体のロータ回転軸方向両端部に半径方向に積層した補助ヨーク部を設けた。   In order to achieve the above object, according to the present invention, auxiliary yoke portions laminated in the radial direction are provided at both ends of the stator core body in the rotor rotation axis direction.

具体的には、第１の発明では、回転電機のステータコアを前提とし、
上記回転電機のステータコアは、
電磁鋼板が屈曲されてティース部とヨーク部とが形成されたコ字状のピースが複数枚積層されてブロック体となり、該ブロック体を円周方向に複数個並設することにより形成したステータコア本体と、
上記ステータコア本体のロータ回転軸方向両端部に、半径方向に同心円状又は螺旋状に積層した電磁鋼板からなる補助ヨーク部とを備える構成とする。 Specifically, in the first invention, on the premise of a stator core of a rotating electrical machine,
The stator core of the rotating electric machine is
A stator core body formed by laminating a plurality of U-shaped pieces in which a magnetic steel plate is bent to form a teeth portion and a yoke portion to form a block body, and arranging a plurality of the block bodies in a circumferential direction. When,
The stator core body is provided with auxiliary yoke portions made of electromagnetic steel plates laminated concentrically or spirally in the radial direction at both ends in the rotor rotational axis direction.

上記の構成によると、電磁鋼板を屈曲させてティース部とヨーク部とを形成したので、ティース部とヨーク部との間にエアギャップがなく、エアギャップによる磁気的な抵抗は発生しない上に、ロータの回転時における磁極の変化に伴う圧縮と引張の力に耐え得る。一方、コ字状ブロック間には、磁気的なギャップが存在するために、磁気抵抗が増大して、ヨーク部の磁束量の減少を招くという点で問題となるが、ステータコア本体のロータ回転軸方向両端部に半径方向に鋼板を積層した構造の補助ヨーク部を設けたので、コ字状ブロック間の磁気的なギャップを迂回した磁束が補助ヨーク部内を通る。このとき、磁束は、補助ヨーク部の鋼板の厚さ方向ではなく、鋼板に沿って流れるので、鋼板間のエアギャップの影響や渦電流の発生が最小限に抑えられる。   According to the above configuration, the magnetic steel sheet is bent to form the tooth portion and the yoke portion, so there is no air gap between the tooth portion and the yoke portion, and magnetic resistance due to the air gap does not occur. It can withstand the compressive and tensile forces that accompany changes in the magnetic poles during the rotation of the rotor. On the other hand, since there is a magnetic gap between the U-shaped blocks, there is a problem in that the magnetic resistance is increased and the amount of magnetic flux in the yoke portion is reduced. Since the auxiliary yoke portions having a structure in which steel plates are laminated in the radial direction are provided at both ends in the direction, the magnetic flux bypassing the magnetic gap between the U-shaped blocks passes through the auxiliary yoke portion. At this time, since the magnetic flux flows not along the thickness direction of the steel plate of the auxiliary yoke part but along the steel plate, the influence of the air gap between the steel plates and the generation of eddy current can be minimized.

第２の発明では、第１の発明において、
上記コ字状のピースは方向性電磁鋼板であり、磁化容易軸を一方のティース部からヨーク部方向に配置したもので、
上記補助ヨーク部は、無方向性電磁鋼板又は円周方向に磁化容易軸を配置した方向性電磁鋼板によって構成されている。 In the second invention, in the first invention,
The U-shaped piece is a grain-oriented electrical steel sheet, in which an easy magnetization axis is arranged from one tooth part to the yoke part direction,
The auxiliary yoke portion is formed of a non-oriented electrical steel sheet or a directional electrical steel sheet having an easy magnetization axis arranged in the circumferential direction.

上記の構成によると、コ字状のピースを方向性電磁鋼板で構成したので、無方向性電磁鋼板を用いるよりも、ティース部からヨーク部方向に磁束が流れやすくなる。また、ヨーク部においても、その円周方向両端に連続するティース部間の磁束が流れやすくなることから、全体としてさらに磁束が流れやすくなる。一方、補助ヨーク部は、無方向性電磁鋼板であっても、円周方向に磁化容易軸を配置した方向性電磁鋼板であってもよく、いずれの場合も迂回した磁束が補助ヨーク部内を流れやすく、隣に並設されたブロック体へ向かって磁束が流れ込むのが容易となる。   According to said structure, since the U-shaped piece was comprised with the directional electromagnetic steel plate, a magnetic flux flows easily from a teeth part to a yoke part direction rather than using a non-oriented electromagnetic steel plate. Also, in the yoke portion, the magnetic flux between the teeth portions continuous at both ends in the circumferential direction can easily flow, so that the magnetic flux further easily flows as a whole. On the other hand, the auxiliary yoke part may be a non-oriented electrical steel sheet or a directional electrical steel sheet in which an easy magnetization axis is arranged in the circumferential direction, and the bypassed magnetic flux flows in the auxiliary yoke part in any case. It becomes easy, and it becomes easy for magnetic flux to flow toward the block body arranged side by side easily.

第３の発明では、第１又は第２の発明において、
上記各ブロック体同士及び上記補助ヨーク部は接着剤又は溶接により一体化されていると共に、さらにその外周面部がケース部材で固定されている。 In the third invention, in the first or second invention,
The block bodies and the auxiliary yoke portion are integrated by an adhesive or welding, and the outer peripheral surface portion is further fixed by a case member.

上記の構成によると、各ブロック体及び補助ヨーク部が接着剤、溶接又はケース部材で一体化されているので、剛性が高くなる。   According to said structure, since each block body and auxiliary | assistant yoke part are integrated by the adhesive agent, welding, or a case member, rigidity becomes high.

以上説明したように、本発明によれば、ステータコア本体のロータ回転軸方向両端部に、半径方向に同心円状又は螺旋状に積層した電磁鋼板からなる補助ヨーク部を設け、この補助ヨーク部に迂回した磁束が流れるようにしたことにより、コ字状ピース間に生じる磁気的な抵抗を補助ヨーク部でカバーして、ステータコアを流れる磁束量を増やすことが可能になり、モータ等の回転電機の出力及び効率性能を向上させることができる。   As described above, according to the present invention, the auxiliary yoke portions made of electromagnetic steel plates laminated concentrically or spirally in the radial direction are provided at both ends of the stator core body in the rotor rotation axis direction, and the auxiliary yoke portions are bypassed. The magnetic flux generated between the U-shaped pieces can be covered with the auxiliary yoke portion, and the amount of magnetic flux flowing through the stator core can be increased, and the output of a rotating electrical machine such as a motor can be obtained. And the efficiency performance can be improved.

以下、本発明の実施形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の実施形態の回転電機のステータコア１を示し、このステータコア１は、ステータコア本体２と一対の補助ヨーク部３とを備えている。なお、このステータコア１は、モータ等の回転電機用のものとする。   FIG. 1 shows a stator core 1 of a rotating electrical machine according to an embodiment of the present invention. The stator core 1 includes a stator core body 2 and a pair of auxiliary yoke portions 3. The stator core 1 is for a rotating electrical machine such as a motor.

図２に示すように、ステータコア本体２は、サイズが順次大きくなるコ字状のピースが複数枚積層されたブロック体２ａを備えている。ブロック体２ａは、電磁鋼板が９０°よりも若干大きい角度で屈曲されてティース部４とヨーク部５とが形成された複数のコ字状のピースよりなり、このブロック体２ａを円周方向に複数個（本実施形態では、８個）並設することにより、ステータコア本体２が形成されている。ティース部４は、いずれもステータコア本体２の中心を向き、隣り合うブロック体２ａのティース部４が互いに接している。これらティース部４で囲まれた領域にロータ６（図２に二点鎖線で示す）が配置されるようになっている。なお、一次巻線（コイル）は不図示であるが、ティース部４の周囲を取り巻く周知の構造が採用される。   As shown in FIG. 2, the stator core body 2 includes a block body 2 a in which a plurality of U-shaped pieces whose sizes are sequentially increased are stacked. The block body 2a is composed of a plurality of U-shaped pieces in which the electrical steel sheet is bent at an angle slightly larger than 90 ° to form the teeth portion 4 and the yoke portion 5, and the block body 2a is arranged in the circumferential direction. The stator core body 2 is formed by arranging a plurality (eight in this embodiment). As for the teeth part 4, all face the center of the stator core main body 2, and the teeth part 4 of the adjacent block body 2a is mutually contacting. A rotor 6 (shown by a two-dot chain line in FIG. 2) is arranged in a region surrounded by these tooth portions 4. In addition, although a primary winding (coil) is not illustrated, a known structure surrounding the periphery of the tooth portion 4 is employed.

電磁鋼板は、図２中に一部矢印で示すように、一方のティース部４からヨーク部５方向に磁化容易軸を配置した方向性電磁鋼板で構成されている。電磁鋼板は鉄にケイ素を添加することで製造され、ケイ素添加量が増すごとに、鉄損が低下する性質を有する。ケイ素を添加しすぎると、鋼が割れやすくなるため、実用的な電磁鋼板のケイ素添加量は約４％ぐらいまでとなっている。方向性電磁鋼板は、鋼板の一方向のみに磁気的な特性を最適化した鋼板であり、結晶の磁化容易軸を圧延方向に整列させるように調整して作製される。   The electrical steel sheet is composed of a directional electrical steel sheet in which an easy axis of magnetization is arranged in the direction from one tooth portion 4 to the yoke portion 5 as shown in part by arrows in FIG. The electrical steel sheet is manufactured by adding silicon to iron, and has the property that the iron loss decreases as the silicon addition amount increases. If too much silicon is added, the steel tends to crack, so the amount of silicon added to a practical electrical steel sheet is about 4%. A grain-oriented electrical steel sheet is a steel sheet whose magnetic properties are optimized only in one direction of the steel sheet, and is produced by adjusting the easy magnetization axis of the crystal in the rolling direction.

補助ヨーク部３は、ステータコア本体２のロータ６の回転軸方向両端部にそれぞれ配置され、半径方向に外径の異なる環状電磁鋼板３ａを同心円状に積層したものからなる。補助ヨーク部３の厚さ（軸方向長さ）は、ティース部４に導線を巻いたときに、その導線の高さと同程度であり、ステータコア本体２のロータ６の回転軸方向両端部の空いたスペースが有効に利用されている。補助ヨーク部３は、無方向性電磁鋼板又は円周方向に磁化容易軸を配置した方向性電磁鋼板によって構成されている。無方向性電磁鋼板は、板厚面内の全ての方向にほぼ等しい磁気特性を有する鋼板であり、結晶方位がランダムになるように調整して作製される。   The auxiliary yoke portions 3 are respectively disposed at both ends in the rotation axis direction of the rotor 6 of the stator core body 2 and are formed by concentrically laminating annular electromagnetic steel plates 3a having different outer diameters in the radial direction. The thickness (axial length) of the auxiliary yoke portion 3 is approximately the same as the height of the conducting wire when the conducting wire is wound around the tooth portion 4, and is vacant at both ends in the rotational axis direction of the rotor 6 of the stator core body 2. Space is being used effectively. The auxiliary yoke part 3 is configured by a non-oriented electrical steel sheet or a directional electrical steel sheet in which an easy magnetization axis is arranged in the circumferential direction. A non-oriented electrical steel sheet is a steel sheet having substantially the same magnetic characteristics in all directions within the plate thickness plane, and is produced by adjusting the crystal orientation to be random.

図１に示すように、隣り合う各ブロック体２ａ同士及び補助ヨーク部３は接着剤又は溶接により一体化されている。さらに、一体化されたステータコア１の外周面部は、円筒状のケース部材７で固定されている。ケース部材７は、例えば円筒状アルミ合金よりなり、この内周部にステータコア本体２が焼きばめ、冷やしばめなどにより一体化される。   As shown in FIG. 1, the adjacent block bodies 2a and the auxiliary yoke portion 3 are integrated by an adhesive or welding. Furthermore, the outer peripheral surface portion of the integrated stator core 1 is fixed by a cylindrical case member 7. The case member 7 is made of, for example, a cylindrical aluminum alloy, and the stator core body 2 is integrated with the inner peripheral portion thereof by shrink fitting or cold fitting.

なお、電磁鋼板を屈曲したり、溶接した際には歪みが入り、磁気的な特性が劣化するが、本実施形態のステータコア１は、焼鈍することにより、失われた磁気特性の多くが回復されている。なお、例えば、無方向性電磁鋼板の焼鈍温度は、６８０℃〜７５０℃で、方向性電磁鋼板では焼鈍温度は７８０℃〜８２０℃で、いずれも保持時間は２時間とする。   Note that, when the magnetic steel sheet is bent or welded, distortion occurs and the magnetic characteristics are deteriorated. However, the stator core 1 of the present embodiment recovers most of the lost magnetic characteristics by annealing. ing. For example, the annealing temperature of the non-oriented electrical steel sheet is 680 ° C. to 750 ° C., and the orientation temperature of the grain oriented electrical steel sheet is 780 ° C. to 820 ° C., and the holding time is 2 hours.

以上説明したように、電磁鋼板を屈曲させてティース部４とヨーク部５とを形成したので、ティース部４とヨーク部５との間にエアギャップがなく、エアギャップによる磁気的な抵抗は発生しない上に、ロータ６の回転時における磁極の変化に伴う圧縮と引張の力に耐えることができる。   As described above, since the magnetic steel sheet is bent to form the tooth part 4 and the yoke part 5, there is no air gap between the tooth part 4 and the yoke part 5, and magnetic resistance due to the air gap is generated. In addition, it can withstand the compressive and tensile forces associated with changes in the magnetic poles during rotation of the rotor 6.

そして、ステータコア本体２のロータ６の回転軸方向両端部に半径方向に環状電磁鋼板３ａを積層した構造の補助ヨーク部３を設けたので、上述した抵抗部を迂回した磁束が補助ヨーク部３内を通る。このとき、磁束は、補助ヨーク部３の環状電磁鋼板３ａの厚さ方向ではなく、環状電磁鋼板３ａに沿って流れるので、環状電磁鋼板３ａ間のエアギャップの影響や渦電流の発生が最小限に抑えられる。   Since the auxiliary yoke portion 3 having a structure in which the annular electromagnetic steel plates 3a are laminated in the radial direction is provided at both ends of the rotor 6 of the stator core body 2 in the rotation axis direction, the magnetic flux bypassing the above-described resistance portion is generated in the auxiliary yoke portion 3. Pass through. At this time, the magnetic flux flows not along the thickness direction of the annular electromagnetic steel sheet 3a of the auxiliary yoke part 3 but along the annular electromagnetic steel sheet 3a, so that the influence of an air gap between the annular electromagnetic steel sheets 3a and the generation of eddy currents are minimized. Can be suppressed.

また、コ字状のピースを方向性電磁鋼板で構成したので、無方向性電磁鋼板を用いるよりも、ティース部４からヨーク部５方向に磁束が流れやすくなる。また、ヨーク部５においても連続するティース部４間の磁束が流れやすくなることから、全体としてさらに磁束が流れやすくなる。一方、補助ヨーク部３の環状電磁鋼板３ａは、板厚面内の全ての方向にほぼ等しい磁気特性を有する無方向性電磁鋼板であっても、円周方向に磁化容易軸を配置した方向性電磁鋼板であっても、迂回した磁束が補助ヨーク部３内を流れやすい。   In addition, since the U-shaped piece is composed of the directional electromagnetic steel sheet, the magnetic flux easily flows from the tooth part 4 to the yoke part 5 direction rather than using the non-oriented electromagnetic steel sheet. Further, since the magnetic flux between the continuous tooth portions 4 easily flows in the yoke portion 5 as well, the magnetic flux further easily flows as a whole. On the other hand, even if the annular electromagnetic steel sheet 3a of the auxiliary yoke portion 3 is a non-oriented electrical steel sheet having substantially the same magnetic characteristics in all directions within the plate thickness surface, the directionality in which the easy magnetization axis is arranged in the circumferential direction. Even in the case of an electromagnetic steel plate, the detoured magnetic flux easily flows in the auxiliary yoke portion 3.

さらに各ブロック体２ａ及び補助ヨーク部３が接着剤、溶接又はケース部材７で一体化されているので、剛性が高い。   Furthermore, since each block body 2a and the auxiliary yoke part 3 are integrated by the adhesive agent, welding, or the case member 7, rigidity is high.

したがって、本実施形態にかかる回転電機のステータコア１によると、ステータコア本体２のロータ６の回転軸方向両端部に、半径方向に同心円状に積層した環状電磁鋼板３ａからなる補助ヨーク部３を設け、この補助ヨーク部３に迂回した磁束が流れるようにしたことにより、コ字状ピース間に生じる磁気的な抵抗を補助ヨーク部３でカバーして、ステータコア１を流れる磁束量を増やすことが可能になり、モータ等の回転電機の出力及び効率性能を向上させることができる。   Therefore, according to the stator core 1 of the rotating electrical machine according to the present embodiment, the auxiliary yoke portions 3 made of the annular electromagnetic steel plates 3a concentrically stacked in the radial direction are provided at both ends in the rotation axis direction of the rotor 6 of the stator core body 2. By making the detoured magnetic flux flow to the auxiliary yoke portion 3, it is possible to cover the magnetic resistance generated between the U-shaped pieces with the auxiliary yoke portion 3 and increase the amount of magnetic flux flowing through the stator core 1. Thus, the output and efficiency performance of a rotating electrical machine such as a motor can be improved.

（その他の実施形態）
本発明は、上記実施形態について、以下のような構成としてもよい。 (Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

すなわち、上記実施形態では、補助ヨーク部３は、外径の異なる同心円状の環状電磁鋼板３ａを積層して形成したが、螺旋状に巻いて半径方向に積層して形成してもよい。螺旋状であれば、部品点数が少なくなり、補助ヨーク部３の製造が容易である。   That is, in the above embodiment, the auxiliary yoke portion 3 is formed by stacking concentric annular electromagnetic steel plates 3a having different outer diameters, but may be formed by spirally winding in a radial direction. If it is spiral, the number of parts is reduced, and the auxiliary yoke portion 3 can be easily manufactured.

なお、以上の実施形態は、本質的に好ましい例示であって、本発明、その適用物や用途の範囲を制限することを意図するものではない。   In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

回転電機のステータコアを示す斜視図である。It is a perspective view which shows the stator core of a rotary electric machine. ステータコア本体を示す平面図である。It is a top view which shows a stator core main body. 補助ヨークを示す平面図である。It is a top view which shows an auxiliary yoke. ステータコア内の磁束の流れを示す側面図である。It is a side view which shows the flow of the magnetic flux in a stator core. 磁気的なギャップの存在を説明する平面図である。It is a top view explaining presence of a magnetic gap. 電磁鋼板をロータ回転軸方向に積層した補助ヨークを有するステータコアを示す側面図である。It is a side view which shows the stator core which has the auxiliary yoke which laminated | stacked the electromagnetic steel plate on the rotor rotating shaft direction.

符号の説明Explanation of symbols

１ 回転電機のステータコア
２ ステータコア本体
３ 補助ヨーク部
４ ティース部
５ ヨーク部
６ ロータ DESCRIPTION OF SYMBOLS 1 Stator core of rotary electric machine 2 Stator core main body 3 Auxiliary yoke part 4 Teeth part 5 Yoke part 6 Rotor

Claims (3)

回転電機のステータコアにおいて、
電磁鋼板が屈曲されてティース部とヨーク部とが形成されたコ字状のピースが複数枚積層されてブロック体となり、該ブロック体を円周方向に複数個並設することにより形成したステータコア本体と、
上記ステータコア本体のロータ回転軸方向両端部に、半径方向に同心円状又は螺旋状に積層した電磁鋼板からなる補助ヨーク部とを備える
ことを特徴とする回転電機のステータコア。 In the stator core of rotating electrical machines,
A stator core body formed by laminating a plurality of U-shaped pieces in which a magnetic steel plate is bent to form a teeth portion and a yoke portion to form a block body, and arranging a plurality of the block bodies in a circumferential direction. When,
A stator core for a rotating electrical machine, comprising auxiliary yoke portions made of electromagnetic steel plates laminated concentrically or spirally in a radial direction at both ends of the stator core body in the rotor rotational axis direction. 請求項１に記載の回転電機のステータコアにおいて、
上記コ字状のピースは方向性電磁鋼板であり、磁化容易軸を一方のティース部からヨーク部方向に配置したもので、
上記補助ヨーク部は、無方向性電磁鋼板又は円周方向に磁化容易軸を配置した方向性電磁鋼板によって構成されている
ことを特徴とする回転電機のステータコア。 In the stator core of the rotating electrical machine according to claim 1,
The U-shaped piece is a grain-oriented electrical steel sheet, in which an easy magnetization axis is arranged from one tooth part to the yoke part direction,
The auxiliary yoke portion is constituted by a non-oriented electrical steel sheet or a directional electrical steel sheet having an easy magnetization axis arranged in the circumferential direction. 請求項１又は２に記載の回転電機のステータコアにおいて、
上記各ブロック体同士及び上記補助ヨーク部は接着剤又は溶接により一体化されていると共に、さらにその外周面部がケース部材で固定されている
ことを特徴とする回転電機のステータコア。 In the stator core of the rotating electrical machine according to claim 1 or 2,
The stator core of the rotating electrical machine, wherein the block bodies and the auxiliary yoke portion are integrated by an adhesive or welding, and the outer peripheral surface portion is fixed by a case member.
JP2008175384A 2008-07-04 2008-07-04 Stator core of rotating electric machine Pending JP2010017002A (en)

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WO2015072018A1 (en) * 2013-11-15 2015-05-21 三菱電機株式会社 Commutated motor, electric fan, electric vacuum cleaner, and commutated-motor manufacturing method
CN105745827A (en) * 2013-11-15 2016-07-06 三菱电机株式会社 Commutated motor, electric fan, electric vacuum cleaner, and commutated-motor manufacturing method
WO2015072299A1 (en) * 2013-11-15 2015-05-21 三菱電機株式会社 Commutated motor, electric fan, electric vacuum cleaner, and commutated-motor manufacturing method
JP6020744B2 (en) * 2013-11-15 2016-11-02 三菱電機株式会社 Commutator motor, electric blower, vacuum cleaner, and commutator motor manufacturing method
JPWO2015072299A1 (en) * 2013-11-15 2017-03-16 三菱電機株式会社 Commutator motor, electric blower, vacuum cleaner, and commutator motor manufacturing method
CN104901443A (en) * 2014-03-06 2015-09-09 罗伯特·博世有限公司 Armature for electric motor and method for manufacturing the armature
CN104901446A (en) * 2014-03-07 2015-09-09 罗伯特·博世有限公司 Stator for electric motor
JP2015130796A (en) * 2015-03-02 2015-07-16 章 三好 Rotary electric apparatus
US10763717B2 (en) 2016-09-13 2020-09-01 Mitsubishi Electric Corporation Stator core, stator, electric motor, drive device, compressor, air conditioner, and a method of manufacturing a stator core
CN111277056A (en) * 2018-12-04 2020-06-12 常州威灵电机制造有限公司 Stator core and motor

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