JP6165622B2 - Rotating electric machine rotor and rotating electric machine equipped with the same - Google Patents
Rotating electric machine rotor and rotating electric machine equipped with the same Download PDFInfo
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- JP6165622B2 JP6165622B2 JP2013270808A JP2013270808A JP6165622B2 JP 6165622 B2 JP6165622 B2 JP 6165622B2 JP 2013270808 A JP2013270808 A JP 2013270808A JP 2013270808 A JP2013270808 A JP 2013270808A JP 6165622 B2 JP6165622 B2 JP 6165622B2
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- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 235000013372 meat Nutrition 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 11
- 238000010030 laminating Methods 0.000 claims description 10
- 239000011162 core material Substances 0.000 description 18
- 229910000576 Laminated steel Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
本発明は回転電機の回転子、及びこれを備えた回転電機に関する。 The present invention relates to a rotor of a rotating electrical machine and a rotating electrical machine including the same.
回転電機は回転子を備えており、回転子鉄心は所定の枚数の電磁鋼板を径方向および周方向に位置を規定して積層することで形成される。ここで、径方向に対する位置の規定は、電磁鋼板に形成された回転子鉄心とシャフトを組み合わせるための中心孔によって行い、周方向に対する位置の規定は、電磁鋼板に形成された位置決め部によって行う方法がある。例えば、特開２００５−０５７９２０号公報では、電磁鋼板に形成された中心孔を用いて、積層鋼鈑の径方向位置を規定する径方向位置決め機構と、前記電磁鋼鈑に形成された磁石挿入孔を用いて、積層鋼板の周方向位置を揃える周方向位置決め機構と、を有することを特徴とする回転電機、と記載されている。 The rotating electrical machine includes a rotor, and the rotor iron core is formed by laminating a predetermined number of electromagnetic steel sheets with their positions defined in the radial direction and the circumferential direction. Here, the definition of the position in the radial direction is performed by a center hole for combining the rotor core formed on the electromagnetic steel sheet and the shaft, and the definition of the position in the circumferential direction is performed by a positioning portion formed in the electromagnetic steel sheet. There is. For example, in Japanese Patent Laid-Open No. 2005-057920, a radial positioning mechanism that defines a radial position of a laminated steel plate using a central hole formed in an electromagnetic steel plate, and a magnet insertion hole formed in the electromagnetic steel plate. And a circumferential positioning mechanism that aligns the circumferential position of the laminated steel sheets.
前述のように、回転電機における回転子鉄心は所定の枚数の電磁鋼板の積層により形成される。ここで、電磁鋼板積層時の周方向に対する位置規定用の孔（位置決め孔）を電磁鋼板上に新たに設けた場合、回転子を回転させたときに発生する遠心力などによって孔の周囲に応力集中が発生し、回転子鉄心が変形、破損する可能性がある。 As described above, a rotor core in a rotating electrical machine is formed by stacking a predetermined number of electromagnetic steel sheets. Here, when a hole for positioning in the circumferential direction (positioning hole) in the circumferential direction at the time of laminating electromagnetic steel sheets is newly provided on the electromagnetic steel sheet, stress is generated around the holes due to centrifugal force generated when the rotor is rotated. Concentration may occur and the rotor core may be deformed or damaged.
そこで本発明は、電磁鋼板積層時の周方向に対する位置規定用の孔（位置決め孔）の周囲に発生する応力集中を緩和できる回転電機の回転子、及びこれを備えた回転電機を提供することを目的とする。 Therefore, the present invention provides a rotor of a rotating electrical machine that can relieve stress concentration generated around a hole for positioning (positioning hole) in the circumferential direction when laminating electromagnetic steel sheets, and a rotating electrical machine including the rotor. Objective.
上記課題を解決するために、例えば特許請求の範囲に記載の構成を採用する。本願は上記課題を解決する手段を複数含んでいるが、その一例を挙げるならば、複数の電磁鋼板を積層して形成される回転子鉄心を備える回転電機の回転子において、前記回転子鉄心は、永久磁石が挿入される磁石挿入孔と、前記磁石挿入孔の内径側に複数設けられた肉盗み孔と、前記磁石挿入孔及び前記肉盗み孔から独立して設けられた、前記電磁鋼板積層時の周方向に対する位置規定用の位置決め孔と、を備え、前記位置決め孔が、前記肉盗み孔によって形成されるブリッジ部に収まるように設けられたことを特徴とする。 In order to solve the above problems, for example, the configuration described in the claims is adopted. The present application includes a plurality of means for solving the above-described problems. For example, in a rotor of a rotating electrical machine including a rotor core formed by laminating a plurality of electromagnetic steel plates, the rotor core is A magnet insertion hole into which a permanent magnet is inserted; a plurality of meat stealing holes provided on the inner diameter side of the magnet insertion hole; and the electromagnetic steel sheet laminate provided independently from the magnet insertion hole and the meat stealing hole And a positioning hole for defining the position with respect to the circumferential direction of the hour, wherein the positioning hole is provided so as to be accommodated in a bridge portion formed by the meat stealing hole.
本発明によれば、電磁鋼板積層時の周方向に対する位置規定用の孔（位置決め孔）の周囲に発生する応力集中を緩和できる回転電機の回転子、及びこれを備えた回転電機を提供することができる。 According to the present invention, it is possible to provide a rotor of a rotating electrical machine that can relieve stress concentration generated around a hole for positioning (positioning hole) in the circumferential direction when laminating electromagnetic steel sheets, and a rotating electrical machine including the rotor. Can do.
上記した以外の課題、構成及び効果は、以下の実施形態の説明により明らかにされる。 Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.
以下、図面を用いて実施例を説明する。 Embodiments will be described below with reference to the drawings.
図１に回転電機の軸方向断面を示す。図１に示すように、回転電機のハウジング１の内部には、コイル２が巻回された固定子鉄心３を有する固定子と、所定の枚数の電磁鋼板を積層して形成される回転子鉄心４、シャフト５、あて板６を有する回転子がある。ハウジング１がベアリング７を介してシャフト５固定し、回転子と固定子との間に空隙を設けることで、回転子は回転可能に保持されている。 FIG. 1 shows an axial section of the rotating electrical machine. As shown in FIG. 1, a rotor core formed by laminating a stator having a stator core 3 around which a coil 2 is wound and a predetermined number of electromagnetic steel plates, inside a housing 1 of a rotating electrical machine. 4, there is a rotor having a shaft 5 and a counter plate 6. The housing 1 is fixed to the shaft 5 via the bearing 7, and the rotor is rotatably held by providing a gap between the rotor and the stator.
図２に回転子の径方向断面を示す。回転子鉄心４には、永久磁石８を挿入するための磁石挿入孔９や軽量化のための肉盗み孔１０とは別に、電磁鋼板積層時の周方向に対する位置規定用の孔（位置決め孔）１１が設けられている。ここで、永久磁石８は回転子鉄心４に対して接着剤などで固定されている。回転子鉄心４には、回転時に発生する遠心力や、回転子鉄心４とシャフト６を圧入にしたことによって発生する圧縮力が加わる。その結果、磁石挿入孔９、肉盗み孔１０および位置決め孔１１の周囲に応力集中が起こり、回転子鉄心材の降伏点を越える可能性がある。このため、磁石挿入孔９、肉盗み孔１０、位置決め孔１１は応力集中を緩和できる形状とし、位置決め孔１１は応力集中を緩和できる場所に設置することが要求される。 FIG. 2 shows a radial cross section of the rotor. In addition to the magnet insertion hole 9 for inserting the permanent magnet 8 and the meat stealing hole 10 for weight reduction, the rotor core 4 has a hole for positioning in the circumferential direction (positioning hole) when laminating electromagnetic steel sheets. 11 is provided. Here, the permanent magnet 8 is fixed to the rotor core 4 with an adhesive or the like. Centrifugal force generated at the time of rotation and compressive force generated by press-fitting the rotor core 4 and the shaft 6 are applied to the rotor core 4. As a result, stress concentration occurs around the magnet insertion hole 9, the meat stealing hole 10, and the positioning hole 11, and the yield point of the rotor core material may be exceeded. For this reason, the magnet insertion hole 9, the meat stealing hole 10, and the positioning hole 11 are required to have a shape that can relieve stress concentration, and the positioning hole 11 is required to be installed at a location that can relieve stress concentration.
図３に示すように、本発明では、回転子鉄心４上において、位置決め孔１１を任意の二つの肉盗み孔１０によって形成されるブリッジ部１２に収まるように設けることによって、位置決め孔１１の周囲に発生する応力集中を緩和できることを見出した。ここで、「位置決め孔１１がブリッジ部１２に収まる」とは、位置決め孔１１が、二つの隣り合う肉盗み孔１０の、周方向端面同士を結ぶ領域内（すなわちブリッジ部１２の領域内）に配置されていることを意味する。 As shown in FIG. 3, in the present invention, the positioning hole 11 is provided on the rotor core 4 so as to be accommodated in the bridge portion 12 formed by any two meat stealing holes 10. It was found that the stress concentration generated in can be relaxed. Here, “the positioning hole 11 fits in the bridge portion 12” means that the positioning hole 11 is in the region connecting the circumferential end surfaces of the two adjacent meat stealing holes 10 (that is, in the region of the bridge portion 12). It means that it is arranged.
なお、本実施例は、ブリッジ部１２のブリッジ幅Ａが一定であり、磁極中心を通る軸をｄ軸とすると、ｄ軸がブリッジ部１２の周方向中央を通る場合の例である。なお、位置決め孔１１はどのような形状であってもよい。 This embodiment is an example in which the bridge width A of the bridge portion 12 is constant and the d-axis passes through the center in the circumferential direction of the bridge portion 12 where the axis passing through the magnetic pole center is the d-axis. The positioning hole 11 may have any shape.
実施例１では、ブリッジ部のブリッジ幅Ａが一定であった。本実施例では、図４に示すように、ｄ軸がブリッジ部の周方向中央を通り、ブリッジ部のブリッジ幅Ａが一定でない場合について述べる。 In Example 1, the bridge width A of the bridge portion was constant. In the present embodiment, as shown in FIG. 4, a case where the d-axis passes through the center in the circumferential direction of the bridge portion and the bridge width A of the bridge portion is not constant will be described.
この場合においても、位置決め孔１１をブリッジ部１２に収まるように設けることによって、位置決め孔１１の周囲に発生する応力集中を緩和できる。なお、位置決め孔１１はどのような形状であってもよい。 Even in this case, the stress concentration generated around the positioning hole 11 can be alleviated by providing the positioning hole 11 so as to be accommodated in the bridge portion 12. The positioning hole 11 may have any shape.
実施例１および２では、いずれも前記ｄ軸がブリッジ部の周方向中央を通る場合について述べた。図５に示すように、本実施例では、任意の二つに磁石挿入孔どうしの間に形成される突極の中心を通る軸をｑ軸としたときに、ｑ軸がブリッジ部１２の周方向中央を通る場合について述べる。 In the first and second embodiments, the case where the d-axis passes through the center in the circumferential direction of the bridge portion has been described. As shown in FIG. 5, in this embodiment, when the axis passing through the center of the salient pole formed between any two magnet insertion holes is defined as the q axis, the q axis is the circumference of the bridge portion 12. The case of passing through the center of the direction will be described.
この場合においても、位置決め孔１１をブリッジ部１２に収まるように設けることによって、位置決め孔１１の周囲に発生する応力集中を緩和できる。なお、位置決め孔１１はどのような形状であってもよく、ブリッジ部１２のブリッジ幅Ａは一定であってもなくてもどちらでもよい。 Even in this case, the stress concentration generated around the positioning hole 11 can be alleviated by providing the positioning hole 11 so as to be accommodated in the bridge portion 12. The positioning hole 11 may have any shape, and the bridge width A of the bridge portion 12 may or may not be constant.
図６に示すように、本実施例では、前記ｄ軸および前記ｑ軸のいずれもブリッジ部の周方向中央を通らない場合について述べる。 As shown in FIG. 6, in the present embodiment, a case will be described in which neither the d-axis nor the q-axis passes through the center in the circumferential direction of the bridge portion.
この場合においても、位置決め孔１１をブリッジ部１２に収まるように設けることによって、位置決め孔１１の周囲に発生する応力集中を緩和できる。また、位置決め孔１１どのような形状であってもよく、ブリッジ部１２のブリッジ幅Ａは一定であってもなくてもどちらでもよい。 Even in this case, the stress concentration generated around the positioning hole 11 can be alleviated by providing the positioning hole 11 so as to be accommodated in the bridge portion 12. The positioning hole 11 may have any shape, and the bridge width A of the bridge portion 12 may or may not be constant.
以上説明したごとく、本発明によれば、所定の枚数の電磁鋼板を積層して形成される回転子鉄心を持つ回転電機において、電磁鋼板積層時の周方向に対する位置規定用の孔（位置決め孔）の周囲に発生する応力集中を緩和することができる。 As described above, according to the present invention, in a rotating electrical machine having a rotor core formed by laminating a predetermined number of electromagnetic steel sheets, a position defining hole (positioning hole) with respect to the circumferential direction when electromagnetic steel sheets are laminated. It is possible to reduce the stress concentration generated around the surface.
１０ 肉盗み孔
１１ 位置決め孔
１２ ブリッジ部
10 Meat stealing hole 11 Positioning hole 12 Bridge part
Claims (7)
前記回転子鉄心は、
永久磁石が挿入される磁石挿入孔と、
前記磁石挿入孔の内径側に複数設けられた肉盗み孔と、
前記磁石挿入孔及び前記肉盗み孔から独立して設けられた、前記電磁鋼板積層時の周方向に対する位置規定用の位置決め孔と、を備え、
前記位置決め孔が、二つの隣り合う前記肉盗み孔の周方向端面同士を結ぶ領域で形成されるブリッジ部に収まるように設けられ、
かつ、前記位置決め孔が前記ブリッジ部の周方向中央に設けられた回転電機の回転子。 In a rotor of a rotating electrical machine including a rotor core formed by laminating a plurality of electromagnetic steel plates,
The rotor core is
A magnet insertion hole into which a permanent magnet is inserted;
A plurality of meat stealing holes provided on the inner diameter side of the magnet insertion hole;
A positioning hole for position regulation with respect to the circumferential direction at the time of laminating the electromagnetic steel sheets, provided independently from the magnet insertion hole and the meat stealing hole,
The positioning hole is provided so as to fit in a bridge portion formed in a region connecting the circumferential end faces of two adjacent meat stealing holes ,
And the rotor of the rotary electric machine by which the said positioning hole was provided in the circumferential direction center of the said bridge | bridging part .
前記ブリッジ部の幅が一定である回転電機の回転子。 The rotor of the rotating electrical machine according to claim 1,
A rotor of a rotating electrical machine in which a width of the bridge portion is constant.
前記ブリッジ部の幅が一定でない回転電機の回転子。 The rotor of the rotating electrical machine according to claim 1,
A rotor of a rotating electrical machine in which the width of the bridge portion is not constant.
磁極中心を通るｄ軸が前記ブリッジ部の周方向中央を通る回転電機の回転子。 The rotor of the rotating electrical machine according to claim 1,
A rotor of a rotating electrical machine in which a d-axis passing through a magnetic pole center passes through a circumferential center of the bridge portion.
突極中心を通るｑ軸が前記ブリッジ部の周方向中央を通る回転電機の回転子。 The rotor of the rotating electrical machine according to claim 1,
A rotor of a rotating electrical machine in which a q-axis passing through a salient pole center passes through a circumferential center of the bridge portion.
前記ｄ軸および前記ｑ軸が前記ブリッジ部の周方向中央を通らない回転電機の回転子。 The rotor of the rotating electrical machine according to claim 1,
The rotor of the rotary electric machine in which the d-axis and the q-axis do not pass through the center in the circumferential direction of the bridge portion.
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| JP2013270808A JP6165622B2 (en) | 2013-12-27 | 2013-12-27 | Rotating electric machine rotor and rotating electric machine equipped with the same |
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| JP2013270808A JP6165622B2 (en) | 2013-12-27 | 2013-12-27 | Rotating electric machine rotor and rotating electric machine equipped with the same |
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| JP6165622B2 true JP6165622B2 (en) | 2017-07-19 |
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| DE102021207451A1 (en) * | 2021-07-14 | 2023-01-19 | Zf Friedrichshafen Ag | Rotor lamination, rotor with a plurality of rotor laminations and method for manufacturing a rotor |
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| JP2012138975A (en) * | 2010-12-24 | 2012-07-19 | Toyota Motor Corp | Permanent magnet, split permanent magnet, method of manufacturing split permanent magnet and rotor |
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