WO2016047311A1 - 回転電機の回転子、およびこれを備えた回転電機 - Google Patents
回転電機の回転子、およびこれを備えた回転電機 Download PDFInfo
- Publication number
- WO2016047311A1 WO2016047311A1 PCT/JP2015/072984 JP2015072984W WO2016047311A1 WO 2016047311 A1 WO2016047311 A1 WO 2016047311A1 JP 2015072984 W JP2015072984 W JP 2015072984W WO 2016047311 A1 WO2016047311 A1 WO 2016047311A1
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- WIPO (PCT)
- Prior art keywords
- edge side
- rotor
- inner edge
- outer edge
- rib
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
Definitions
- the present invention relates to a rotor of a rotating electrical machine and a rotating electrical machine including the same.
- a rotor in which a shaft press-fitting hole is provided in a rotor iron core and the shaft is fixed to the rotor iron core by press-fitting the shaft is known (for example, see Patent Document 1). .
- FIG. 1 shows a cross-sectional view of an example of a conventional rotor.
- the rotating electrical machine includes a stator (not shown) and a rotor 300.
- the rotor 300 includes a rotor core 400 and a shaft 500.
- the rotor core 400 is configured by stacking a plurality of electromagnetic steel plates.
- a shaft press-fitting hole 410 is provided at the center of the rotor core 400, and the shaft 500 is press-fitted.
- the rotor core 400 is provided with a plurality of lightening holes 450 to reduce the moment of inertia.
- the rotor core 400 includes an inner edge portion 420 covering the shaft press-fitting hole 410, a plurality of lightening holes 450 covering the inner edge portion 420, an outer edge portion 440 covering the plurality of lightening holes 450, the inner edge portion 420 and the outer edge. It comprises a plurality of ribs 430 connecting the part 440.
- Rotating electric machines are required to respond to higher rotations and reduce the moment of inertia.
- the present invention provides a rotor of a rotating electrical machine that includes a shaft and a rotor core, the shaft is fixed to the rotor core by press-fitting, and the rotor core has a hollow hole.
- An object of the present invention is to provide a rotor for a rotating electrical machine that can be realized at low cost while securing a punched hole, and a rotating electrical machine including the rotor.
- the present application includes a plurality of means for solving the above-described problems.
- the present application includes a shaft and a rotor core, and the shaft is press-fitted into the rotor core.
- the rotor iron core includes a shaft press-fitting hole, an outer edge, an inner edge where the shaft is press-fitted, and a plurality of ribs connecting the outer edge and the inner edge.
- One rib portion includes a plurality of outer edge side rib roots located on the outer edge side, a plurality of outer edge side ribs located on the outer edge side, and a plurality of inner edge side ribs located on the inner edge side.
- the total number of rib roots is large.
- the rotor of a rotary electric machine which can be implement
- FIG. 2 is a cross-sectional view of the rotor of this embodiment (only 90 degrees)
- FIG. 8 is a cross-sectional view of a rotating electrical machine including the rotor of this embodiment.
- the rotating electrical machine 10 includes a stator 20 and a rotor 300.
- the rotor 300 includes a rotor core 400 and a shaft 500, and the rotor core 400 is formed by laminating a plurality of electromagnetic steel plates. It is a thing.
- a shaft press-fitting hole 410 is provided at the center of the rotor core 400, and the shaft 400 is press-fitted.
- the rotor core 400 includes an inner edge 420 that covers the shaft press-fit hole 410, a plurality of hollow holes 450 that cover the inner edge 420, an outer edge 440 that covers the plurality of hollow holes 450, an inner edge 420 and an outer edge 440.
- One rib portion 430 includes an outer edge side rib root 441 positioned on the outer edge side, an outer edge side rib 442 positioned on the outer edge side, an inner edge side rib root 421 positioned on the inner edge side, and an inner edge portion. It is comprised with the inner edge part side rib 422 located in the side. The outer edge side rib 442 and the inner edge side rib 422 are connected, and the total number of the inner edge side rib roots 421 is larger than the total number of the outer edge side rib roots 441.
- the inner edge side ribs can be distributed and arranged in the number necessary to reduce the maximum stress. As a result, the maximum stress can be reduced.
- FIG. 3 shows a stress distribution diagram when the rotor core having the shape according to the prior art shown in FIG. 1 is press-fitted with a certain allowance.
- the maximum stress is 234 (MPa).
- FIG. 4 shows a stress distribution diagram when the rotor core of FIG. 2 is press-fitted with the same interference.
- the maximum stress is 224 (MPa).
- the maximum stress in FIG. 4 is 96% with respect to the maximum stress in FIG. Since the maximum stress can be reduced by 4%, the tightening allowance can be increased correspondingly, and it becomes possible to cope with higher rotation. In addition, since the lightening hole can be enlarged toward the inner edge, the moment of inertia can be reduced. Thereby, it is not necessary to change to a high-strength material, and measures can be taken without changing the cost.
- FIG. 5 is used to explain another embodiment of the present invention.
- the outer edge side rib 442 extends from the outer edge portion 440 toward the inner edge portion 420, has a portion substantially parallel to the radial direction, and has a plurality of inner edge portions.
- the side rib 422 extends from the inner edge portion 420 toward the outer edge side 440 and is inclined in the circumferential direction with respect to the radial direction, the moment of inertia can be further reduced.
- the shape with this change is shown in FIG.
- the plurality of inner edge side ribs 422 extend from the inner edge part 420 toward the outer edge part 440 and are inclined in the circumferential direction with respect to the radial direction.
- the moment of inertia is lower than the shape.
- the shape of the inner edge side rib 422 has been changed from FIG. 2, but this change in shape has almost no effect on the maximum stress on the inner periphery of the rotor core, and the shape of the first embodiment (FIG. 2) is not affected. The maximum stress can be reduced.
- the outer edge side rib 442 has a linear portion 443 substantially parallel to the radial direction, and the plurality of inner edge side ribs 422 are substantially linear.
- the width of the linear portion of the outer edge side rib 432 is made narrower than the total width of the plurality of inner edge side ribs 422, the moment of inertia can be further reduced. The shape with this change is shown in FIG.
- the width of the linear portion of the outer edge side rib 432 is made narrower than the total width of the plurality of inner edge side ribs 422, so that the moment of inertia is greater than the shape of the second embodiment (FIG. 5). Lower.
- the shape of the outer edge side rib 442 has been changed from FIG. 5, since this change has almost no influence on the maximum stress on the inner periphery of the rotor core, the maximum stress can be reduced with respect to the shape of FIG. There is no change.
- FIG. 7 is used to explain another embodiment of the present invention.
- one substantially linear portion 443 in the outer edge side rib 442 and two inner edge side ribs 422 are connected, and two inner edge side ribs 422 and inner edge parts are connected.
- 420 and the shape of the hole is substantially triangular, the moment of inertia can be further reduced.
- the shape with this change is shown in FIG.
- the moment of inertia is lower than that of the third embodiment by making the hole formed by the two inner edge side ribs 422 and the inner edge part 420 into a substantially triangular shape.
- the shape of the inner edge side rib has been changed from FIG. 6, since this change has almost no influence on the maximum stress on the inner periphery of the rotor core, the maximum stress can be reduced with respect to the shape of FIG. There is no change.
- the number of outer edge side ribs in one rib part was not particularly defined, but the shape in which the total number of inner edge side rib roots is larger than the total number of outer edge side rib roots. If so, the number of outer edge side ribs in one rib portion may be one, two, or three or more.
- the number of inner edge side ribs in one rib part was not particularly specified, but the total number of inner edge side rib roots is larger than the total number of outer edge side rib roots. Then, the number of inner edge side ribs in one rib portion may be two, three, or four or more.
- the positioning holes for assembly may be placed near the root of the rib on the outer edge side, but this positioning hole is only necessary for assembly, and the inner stress of the rotor core when the shaft is press-fitted
- the positioning hole is not regarded as a component of the root of the outer edge side rib. That is, the number of rib bases on the outer edge side does not change whether or not there is a positioning hole.
- the type of rotating electrical machine is not specified, but a permanent magnet type rotating electrical machine, an induction motor, or other types of rotating electrical machines may be used.
- a rotor of a rotating electric machine for driving an electric vehicle is used as an example of a rotor of the rotating electric machine.
- a rotating electrical machine for driving an electric vehicle has particularly strong demands for high rotation speed and reduction of moment of inertia.
- the application target of the present invention is not limited to the rotating electric machine for driving the electric vehicle, and the same effect can be obtained even if the present invention is applied to the rotating electric machine for other uses.
- this invention is not limited to the above-mentioned Example, Various modifications are included.
- the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
- a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
400 回転子鉄心
410 シャフト圧入孔
420 内縁部
421 内縁部側リブ付根
422 内縁部側リブ
430 リブ部
440 外縁部
441 外縁部側リブ付根
442 外縁部側リブ
443 径方向に対して略平行な直線状部分
450 肉抜き穴
500 シャフト
Claims (5)
- シャフトと、回転子鉄心と、を備え、
前記シャフトは前記回転子鉄心に圧入されて構成される回転電機の回転子において、
前記回転子鉄心は、
シャフト圧入孔と、
外縁部と、
前記シャフトが圧入される内縁部と、
前記外縁部と前記内縁部とを接続する複数のリブ部と、で構成され、
1つの前記リブ部は
前記外縁部側に位置する複数の外縁部側リブ付根と、
前記外縁部側に位置する複数の外縁部側リブと、
前記内縁部側に位置する複数の内縁部側リブ付根と、
前記内縁部側に位置する複数の内縁部側リブと、で構成され、
前記外縁部側リブと前記内縁部側リブとが接続され、
前記外縁部側リブ付根の総数より前記内縁部リブ付根の総数が多い、回転電機の回転子。 - 請求項1に記載の回転電機の回転子であって、
前記外縁部側リブは前記外縁部から前記内縁部に向かって延伸して、
径方向に対して略平行な部分を有し、
複数の前記内縁部側リブは前記内縁部から前記外縁側に向かって延伸して、
径方向に対して周方向に傾斜している、回転電機の回転子。 - 請求項2に記載の回転電機の回転子であって、
前記外縁部側リブの径方向に対して略平行な部分は略直線状であって、
前記複数の内縁部側リブは略直線状であって、
複数の前記内縁部側リブの幅の合計よりも前記外縁部側リブの直線状部分の幅が狭い、回転電機の回転子。 - 請求項3に記載の回転電機の回転子であって、
前記外縁部側リブにおける1つの前記略直線状部分と2つの前記内縁部側リブが接続され、
前記内縁部側リブと、内縁部と、で構成される孔を備え、
前記孔の形状は略三角形である、回転電機の回転子。 - 請求項1乃至4のいずれかに記載の回転電機の回転子と、
固定子とを備えた回転電機。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US15/512,995 US10305338B2 (en) | 2014-09-25 | 2015-08-17 | Rotor for rotating electric machine and rotating electric machine including the rotor |
JP2016550030A JP6251816B2 (ja) | 2014-09-25 | 2015-08-17 | 回転電機の回転子、およびこれを備えた回転電機 |
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JP2014194622 | 2014-09-25 | ||
JP2014-194622 | 2014-09-25 |
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WO2016047311A1 true WO2016047311A1 (ja) | 2016-03-31 |
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PCT/JP2015/072984 WO2016047311A1 (ja) | 2014-09-25 | 2015-08-17 | 回転電機の回転子、およびこれを備えた回転電機 |
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US (1) | US10305338B2 (ja) |
JP (1) | JP6251816B2 (ja) |
WO (1) | WO2016047311A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020145033A1 (ja) | 2019-01-08 | 2020-07-16 | 日立オートモティブシステムズ株式会社 | 回転電機の回転子 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10374477B2 (en) * | 2017-03-17 | 2019-08-06 | General Electric Company | Electric machine with separable magnet carrier |
JP2020114129A (ja) * | 2019-01-15 | 2020-07-27 | 本田技研工業株式会社 | 回転電機のロータコア |
US11817748B2 (en) * | 2020-07-31 | 2023-11-14 | GM Global Technology Operations LLC | Electric machine with non-magnetic lamination bridges |
US11428160B2 (en) | 2020-12-31 | 2022-08-30 | General Electric Company | Gas turbine engine with interdigitated turbine and gear assembly |
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JP2009011011A (ja) * | 2007-06-26 | 2009-01-15 | Meidensha Corp | 永久磁石式リラクタンスモータの回転子 |
US20120133229A1 (en) * | 2009-03-20 | 2012-05-31 | Moteurs Leroy Somer | Electric device rotor and methods for manufacture |
US20130091902A1 (en) * | 2010-06-25 | 2013-04-18 | Fisher & Paykel Appliances Limited | Rotor for a motor, and a motor and an appliance comprising the rotor, and a method for making a rotor |
JP2013208014A (ja) * | 2012-03-29 | 2013-10-07 | Honda Motor Co Ltd | 回転電機 |
JP2014158331A (ja) * | 2013-02-14 | 2014-08-28 | Honda Motor Co Ltd | 回転電機のロータ |
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JP3954018B2 (ja) * | 2003-01-15 | 2007-08-08 | 本田技研工業株式会社 | ハイブリッド車両用電動機 |
WO2011122328A1 (ja) * | 2010-03-30 | 2011-10-06 | 本田技研工業株式会社 | 電磁鋼板形成体、回転子コア、回転子、回転電機および車両 |
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- 2015-08-17 US US15/512,995 patent/US10305338B2/en active Active
- 2015-08-17 WO PCT/JP2015/072984 patent/WO2016047311A1/ja active Application Filing
- 2015-08-17 JP JP2016550030A patent/JP6251816B2/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2009011011A (ja) * | 2007-06-26 | 2009-01-15 | Meidensha Corp | 永久磁石式リラクタンスモータの回転子 |
US20120133229A1 (en) * | 2009-03-20 | 2012-05-31 | Moteurs Leroy Somer | Electric device rotor and methods for manufacture |
US20130091902A1 (en) * | 2010-06-25 | 2013-04-18 | Fisher & Paykel Appliances Limited | Rotor for a motor, and a motor and an appliance comprising the rotor, and a method for making a rotor |
JP2013208014A (ja) * | 2012-03-29 | 2013-10-07 | Honda Motor Co Ltd | 回転電機 |
JP2014158331A (ja) * | 2013-02-14 | 2014-08-28 | Honda Motor Co Ltd | 回転電機のロータ |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020145033A1 (ja) | 2019-01-08 | 2020-07-16 | 日立オートモティブシステムズ株式会社 | 回転電機の回転子 |
JPWO2020145033A1 (ja) * | 2019-01-08 | 2021-09-27 | 日立Astemo株式会社 | 回転電機の回転子 |
JP7163417B2 (ja) | 2019-01-08 | 2022-10-31 | 日立Astemo株式会社 | 回転電機の回転子 |
US11837916B2 (en) | 2019-01-08 | 2023-12-05 | Hitachi Astemo, Ltd. | Rotor for rotating electric machine |
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Publication number | Publication date |
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US20170302116A1 (en) | 2017-10-19 |
US10305338B2 (en) | 2019-05-28 |
JPWO2016047311A1 (ja) | 2017-04-27 |
JP6251816B2 (ja) | 2017-12-20 |
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