WO2011080817A1 - ステータコアの固定構造およびそれを備えた回転電機 - Google Patents
ステータコアの固定構造およびそれを備えた回転電機 Download PDFInfo
- Publication number
- WO2011080817A1 WO2011080817A1 PCT/JP2009/071750 JP2009071750W WO2011080817A1 WO 2011080817 A1 WO2011080817 A1 WO 2011080817A1 JP 2009071750 W JP2009071750 W JP 2009071750W WO 2011080817 A1 WO2011080817 A1 WO 2011080817A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stator core
- ring member
- case
- fixing structure
- fixing
- Prior art date
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Classifications
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
Definitions
- the present invention relates to a stator core fixing structure and a rotating electric machine including the stator core, and more specifically, a stator core fixing structure in which a ring member is provided on an outer peripheral portion of the stator core and the ring member is attached to a case, and the stator core includes the same.
- a rotating electrical machine related to a rotating electrical machine.
- stator core fixing structures are disclosed in, for example, Japanese Patent Application Laid-Open No. 2008-245352 (Patent Document 1), Japanese Patent Application Laid-Open No. 2007-228725 (Patent Document 2) and Japanese Patent Application Laid-Open No. 2007-306751 (Patent Document 3). ing.
- the rotating electrical machine described in Patent Document 1 includes a housing that houses a rotor and a stator, and a cover that closes an opening of the housing.
- An end plate member is brought into contact with the end surface of the stator on the opening side.
- One bolt is inserted into one opening of the through hole from the opening on the opening side of the hole formed in the end plate member, and is fixed to the bottom of the housing at the tip protruding from the other opening of the through hole.
- the other bolt is inserted from an opening formed in the cover, and is fixed to the end plate member at a tip portion protruding from the other opening of the hole.
- the stator fixing structure includes a stator including a stator core and a housing having an opening for storing the stator core, and the housing has a relatively small gap between the inner peripheral surface of the opening and the stator core,
- a first portion having a constant inner diameter of the opening and a second portion aligned with the first portion in the axial direction of the stator core and having a relatively large gap between the inner peripheral surface of the opening and the stator core are included.
- the stator core fixing structure of Patent Document 3 is a stator fixing structure that is housed in a housing so that a gap is formed between the inner peripheral surface of the housing, and the ring-shaped stator core and the stator core in the axial direction.
- a fastening member that is inserted into the stator core and has one end fixed to the housing to fasten the stator core to the housing, and an axial end portion of the stator core that is positioned on the opposite side to the axial direction with respect to the side on which the fastening member is fixed to the housing And an abutting portion that abuts against the inner peripheral surface of the housing.
- the case may be deformed because the bolt fastening portion of the stator is disposed near the stator insertion port having low rigidity.
- the assembling property is deteriorated, the accuracy of the shaft center is deteriorated, and noise is generated.
- the present invention has been made to solve the above-described problems, and an object thereof is to provide a stator core fixing structure capable of suppressing deformation of a case and a rotating electric machine using the same. To do.
- a stator core fixing structure accommodates a stator core having one end and the other end that are spaced apart from each other in the axial direction, a ring member that is positioned on the outer peripheral side of the stator core and holds the stator core, and the stator core and the ring member And a case having a fixing portion for fixing the ring member and a fitting portion for fitting the ring member, the ring member extending from one end side of the stator core to the other end side, and the fixing portion at the one end side The other end side is fitted to the fitting portion, and the inner diameter of the fitting portion is smaller than the inner diameter of the fixing portion.
- stator core fixing structure thus configured, one end of the stator core is fixed to the fixing portion, the other end is fitted to the fitting portion, and both ends of the stator core are attached to the case. It is not necessary to fix the case, and deformation of the case can be prevented.
- the case has an opening for inserting the stator core, and the radial thickness of the case at the fixed portion is larger than the radial thickness of the case at the opening.
- the ring member is fixed to the fixing portion with a bolt.
- the axial length of the fitting portion that contacts the ring member is shorter than the length of the portion of the bolt that fits into the case.
- the ring member has a flange portion extending radially on one end side.
- a rotating electrical machine according to the present invention includes the stator core fixing structure described above.
- (Embodiment 1) 1 is a cross-sectional view of a rotating electrical machine having a stator core fixing structure according to a first embodiment of the present invention.
- a ring member 70 is accommodated in the case 10.
- the ring member 70 supports the rotating electrical machine 2.
- the rotating electrical machine 2 includes a rotor 39 and a stator 49 provided on the outer peripheral side of the rotor 39.
- the rotor 39 is formed by laminating electromagnetic steel plates.
- a shaft 31 is attached to the rotor 39. The shaft 31 is held by bearings 32 and 33 and can rotate.
- the stator 49 is located on the outer peripheral side of the rotor 39.
- the stator 49 includes a stator core 41 and a coil 45 wound around the stator core 41.
- the winding method of the coil 45 may be either distributed winding or concentrated winding.
- the copper wire constituting the coil 45 may be either a round wire or a flat wire.
- the stator core 41 has a cylindrical shape, a rotor 39 is provided on the inner peripheral side thereof, and the outer peripheral side is in contact with the ring member 70.
- the stator core 41 is configured by laminating electromagnetic steel plates 42.
- the ring member 70 holds the stator core 41.
- the ring member 70 provided on the outer peripheral side of the stator core 41 extends from one end 41a of the stator core 41 to the other end 41b.
- the axial length of the stator core 41 is determined by the one end 41a and the other end 41b.
- the coil 45 contacts the end surfaces of the one end 41a and the other end 41b.
- the ring member 70 has a flange portion 72 extending in the radial direction.
- the flange portion 72 is provided with a through hole 71.
- a bolt 61 as a fastening portion is attached so as to penetrate the through hole 71.
- the bolt 61 fixes the flange portion 72 to the case 10 at a plurality of locations.
- the bolt 61 may be replaced with another configuration such as a rivet.
- FIG. 1 shows a structure in which the bolt 61 is inserted into the case 10 side.
- the present invention is not limited to this, and the embedded bolt is provided in the case 10.
- the embedded bolt penetrates the through hole 71 and is embedded.
- the ring member 70 may be attached to the case 10 by fastening a nut to the insertion bolt.
- the bolt 61 is provided so as to extend in the axial direction, but the bolt 61 may be attached so as to extend in the radial direction.
- the bolt 61 is attached to the fixing portion 15 of the case 10.
- the flange portion 72 of the ring member 70 contacts the fixed portion 15.
- the case 10 has an opening 11, and a cover 21 is fitted in the opening 11.
- the opening 11 is a part for inserting the stator core 41 and the ring member 70.
- the opening 11 is sealed with a cover 21 as a lid.
- the thickness T2 of the case 10 near the opening 11 is thinner than the thickness T1 of the case 10 near the fixed portion 15.
- the outer peripheral surface 12 of the case 10 has a so-called tapered shape in which the outer diameter decreases as the distance from the opening 11 increases, and has a conical outer peripheral surface.
- the outer periphery of the case 10 does not necessarily have a conical shape, and the outer peripheral diameter may be constant. Further, a step may be provided on the outer peripheral surface 12.
- the fitting portion 13 is a portion having a small diameter provided on the lower side of the case 10.
- a ring member 70 is fitted to the fitting portion 13.
- the fitting portion 13 is in contact with the ring member 70 and fixes the ring member 70.
- the cylindrical case 10 has an opening 11 and a bottom opposite to the opening 11, a fitting part 13 is provided on the side close to the bottom, and a fixing part 15 is provided on the side close to the opening 11. ing.
- Rotating electric machine 2 is a motor and generator for transmission of vehicle 1 such as a hybrid vehicle and an electric vehicle.
- the stator 49 includes a stator core 41 and a coil 45.
- the stator 49 constitutes a stator assembly, and the stator assembly is supported by the case 10 in the vicinity of both end surfaces of the one end 41a and the other end 41b.
- the ring member 70 is fastened and fixed to the case 10 by bolts 61 on the opening 11 (stator insertion port) side of the case 10, and the outer peripheral side surface of the ring member 70 is fitted to the fitting portion 13 on the opposite side.
- the axial length of the fitting portion 13 is equal to or less than the length of the fastening portion of the bolt 61, that is, the length of the portion where the bolt 61 is fitted with a screw by the case 10.
- stator assembly is supported on both sides of the one end 41a and the other end 41b, and the vibration of the stator assembly can be suppressed. Furthermore, the accuracy of the rotating shaft core of the stator assembly can be improved. The deformation of the case 10 when the stator assembly is fixed to the case 10 using the bolts 61 can be suppressed.
- the vibration and noise of the rotating electrical machine 2 due to the vibration of the stator 49 can be reduced.
- the vibration of the rotating electrical machine 2 is reduced by improving the accuracy of the shaft 31. Further, the assembling property of the cover 21 and the stator 49 to the case 10 is improved. Furthermore, strength and reliability are improved by relieving stress.
- the stator core 41 fixing structure 50 includes a stator core 41 having one end 41 a and the other end 41 b that are spaced apart from each other in the axial direction, a ring member 70 that is positioned on the outer peripheral side of the stator core 41 and holds the stator core 41, and the stator core 41. And a case 10 having a fixing portion 15 that accommodates the ring member 70 and a fitting portion 13 into which the ring member 70 is fitted.
- the ring member 70 is on the one end 41a side of the stator core 41.
- the one end 41a side is fixed to the fixing portion 15, the other end 41b side is fitted to the fitting portion 13, and the inner diameter R1 of the fitting portion 13 is larger than the inner diameter R2 of the fixing portion. Is also small.
- the case has an opening 11 for inserting the stator core, and the radial thickness T1 of the case 10 at the fixed portion 15 is larger than the radial thickness T2 of the case 10 at the opening 11.
- the fixing part 15 is fixed by the bolt 61.
- the axial length of the fitting portion 13 that comes into contact with the ring member 70 is shorter than the length of the bolt 61 in the portion that fits into the case 10.
- FIG. 2 is a cross-sectional view of a rotating electrical machine having a stator fixing structure according to Embodiment 2 of the present invention.
- rotating electric machine 2 according to the first embodiment is that flange portion 72 is fixed to case 10 by welded portion 79.
- flange portion 72 is fixed to case 10 by welded portion 79.
- the ring member 70 is fixed to the case 10 using bolts, but the ring member 70 is fixed to the case 10 by welding without using bolts.
- the embodiments of the present invention have been described above, the embodiments shown here can be variously modified.
- the outer shape of the case 10 has been described as being cylindrical.
- the cylindrical shape is not necessarily required, and may be rectangular.
- the rotating electrical machine 2 does not necessarily have to be mounted on a vehicle, and may be a rotating electrical machine mounted on something other than the vehicle.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
好ましくは、リング部材と当接する嵌合部の軸方向長さは、ケースに嵌合するボルトの部分の長さより短い。
この発明に従った回転電機は、上記のステータコアの固定構造を備える。
図1は、この発明の実施の形態1に従ったステータコアの固定構造を有する回転電機の断面図である。図1を参照して、ステータコアの固定構造50では、ケース10内にリング部材70が収納されている。リング部材70は回転電機2を支持している。回転電機2はロータ39と、そのロータ39の外周側に設けられたステータ49とを備える。ロータ39は電磁鋼板を積層することで形成される。ロータ39にはシャフト31が取付けられる。シャフト31は、ベアリング32,33により保持されて回転可能である。
また、コイル45を構成する銅線は、丸線または平角線のいずれであってもよい。
リング部材70は半径方向に延びるフランジ部72を有しており、フランジ部72には貫通穴71が設けられる。貫通穴71を貫通するように締結部としてのボルト61が取付けられる。ボルト61は複数箇所でフランジ部72をケース10に固定する。ボルト61は、リベットなどの他の構成に置き換えられてもよい。
図2は、この発明の実施の形態2に従ったステータの固定構造を有する回転電機の断面図である。図2を参照して、この発明の実施の形態2に従った回転電機2では、フランジ部72が溶接部79によりケース10に固定されている点で、実施の形態1に従った回転電機2と異なる。すなわち、図1ではボルトを用いてリング部材70をケース10に固定したが、ボルトを用いずに溶接によりリング部材70をケース10に固定する。
Claims (6)
- 軸方向に互いに離隔した一方端(41a)および他方端(41b)を有するステータコア(41)と、
前記ステータコアの外周側に位置して前記ステータコアを保持するリング部材(70)と、
前記ステータコアおよび前記リング部材を収容する、前記リング部材を固定する固定部(15)と前記リング部材が嵌合する嵌合部(13)とを有するケース(10)とを備え、
前記リング部材は、前記ステータコアの前記一方端側から前記他方端側へ延びており、前記一方端側は前記固定部に固定され、前記他方端側は嵌合部に嵌合し、前記嵌合部の内径は前記固定部の内径よりも小さい、ステータコアの固定構造。 - 前記ケースは前記ステータコアを挿入するための開口部(11)を有し、
前記固定部での前記ケースの径方向の厚みは前記開口部での前記ケースの径方向の厚みより大きい、請求の範囲第1項に記載のステータコアの固定構造。 - 前記固定部にボルトにより前記リング部材が固定される、請求の範囲第1項または第2項に記載のステータコアの固定構造。
- 前記リング部材と当接する前記嵌合部の軸方向長さは、前記ケースに嵌合する前記ボルトの部分の長さより短い、請求の範囲第3項に記載のステータコアの固定構造。
- 前記リング部材は前記一方端側で半径方向に延在するフランジ部(72)を有する、請求の範囲第1項に記載のステータコアの固定構造。
- 請求の範囲第1項に記載のステータコアの固定構造を備えた回転電機。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2009/071750 WO2011080817A1 (ja) | 2009-12-28 | 2009-12-28 | ステータコアの固定構造およびそれを備えた回転電機 |
EP09852795.5A EP2521245B1 (en) | 2009-12-28 | 2009-12-28 | Fixing structure for stator core and rotating electric machine including the same |
JP2011547203A JP5488614B2 (ja) | 2009-12-28 | 2009-12-28 | ステータコアの固定構造およびそれを備えた回転電機 |
US13/514,850 US8786159B2 (en) | 2009-12-28 | 2009-12-28 | Fixing structure for stator core and rotating electric machine including the same |
CN200980163215.2A CN102687372B (zh) | 2009-12-28 | 2009-12-28 | 定子铁芯的固定结构及具备该结构的旋转电机 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2009/071750 WO2011080817A1 (ja) | 2009-12-28 | 2009-12-28 | ステータコアの固定構造およびそれを備えた回転電機 |
Publications (1)
Publication Number | Publication Date |
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WO2011080817A1 true WO2011080817A1 (ja) | 2011-07-07 |
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ID=44226252
Family Applications (1)
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PCT/JP2009/071750 WO2011080817A1 (ja) | 2009-12-28 | 2009-12-28 | ステータコアの固定構造およびそれを備えた回転電機 |
Country Status (5)
Country | Link |
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US (1) | US8786159B2 (ja) |
EP (1) | EP2521245B1 (ja) |
JP (1) | JP5488614B2 (ja) |
CN (1) | CN102687372B (ja) |
WO (1) | WO2011080817A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US20130106252A1 (en) * | 2011-10-26 | 2013-05-02 | Eiji Yanagida | Stator fixing structure |
WO2013164889A1 (ja) * | 2012-05-02 | 2013-11-07 | 三菱電機株式会社 | 回転電機 |
JP2014138487A (ja) * | 2013-01-17 | 2014-07-28 | Mitsubishi Electric Corp | 回転電機 |
JP2015089173A (ja) * | 2013-10-29 | 2015-05-07 | 三菱電機株式会社 | 回転電機 |
EP2768123A4 (en) * | 2011-10-06 | 2016-03-23 | Mitsubishi Electric Corp | ELECTRIC MOTOR |
US9300174B2 (en) | 2013-04-09 | 2016-03-29 | Mitsubishi Electric Corporation | Stator-core fixing structure for rotating electric machine |
JP2019097279A (ja) * | 2017-11-21 | 2019-06-20 | 三菱重工業株式会社 | 電動コンプレッサー |
US10505410B2 (en) | 2013-11-08 | 2019-12-10 | Mitsubishi Electric Corporation | Rotary electric machine having bolt passage members |
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JP2012061912A (ja) * | 2010-09-15 | 2012-03-29 | Aisin Seiki Co Ltd | ハイブリッド車両用駆動装置およびケース |
JP6234128B2 (ja) * | 2013-09-11 | 2017-11-22 | 株式会社マキタ | 電動工具 |
CN105141053B (zh) * | 2015-10-23 | 2017-10-17 | 沈阳工业大学 | 双转子单定子轴向磁场永磁无槽电机定子与外壳安装结构 |
JP6637927B2 (ja) * | 2017-06-13 | 2020-01-29 | 本田技研工業株式会社 | 回転電機のステータ |
US10404111B2 (en) * | 2017-12-04 | 2019-09-03 | American Axle & Manufacturing, Inc. | Motor and stator crush resistance device |
US10804766B1 (en) * | 2019-04-11 | 2020-10-13 | Ford Global Technologies, Llc | Hybrid/electric vehicle transmission |
US11407299B2 (en) * | 2020-02-05 | 2022-08-09 | Schaeffler Technologies AG & Co. KG | Hybrid module |
JP2021166451A (ja) * | 2020-04-08 | 2021-10-14 | 株式会社アイシン | 回転電機および車両の車輪操舵システム |
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- 2009-12-28 EP EP09852795.5A patent/EP2521245B1/en not_active Not-in-force
- 2009-12-28 US US13/514,850 patent/US8786159B2/en active Active
- 2009-12-28 JP JP2011547203A patent/JP5488614B2/ja active Active
- 2009-12-28 CN CN200980163215.2A patent/CN102687372B/zh not_active Expired - Fee Related
- 2009-12-28 WO PCT/JP2009/071750 patent/WO2011080817A1/ja active Application Filing
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EP2768123A4 (en) * | 2011-10-06 | 2016-03-23 | Mitsubishi Electric Corp | ELECTRIC MOTOR |
US10177612B2 (en) | 2011-10-06 | 2019-01-08 | Mitsubishi Electric Corporation | Motor with stator fixing structure |
US20130106252A1 (en) * | 2011-10-26 | 2013-05-02 | Eiji Yanagida | Stator fixing structure |
US10749402B2 (en) | 2012-05-02 | 2020-08-18 | Mitsubishi Electric Corporation | Rotary electric machine |
WO2013164889A1 (ja) * | 2012-05-02 | 2013-11-07 | 三菱電機株式会社 | 回転電機 |
JP5762630B2 (ja) * | 2012-05-02 | 2015-08-12 | 三菱電機株式会社 | 回転電機 |
JP2014138487A (ja) * | 2013-01-17 | 2014-07-28 | Mitsubishi Electric Corp | 回転電機 |
US9525314B2 (en) | 2013-01-17 | 2016-12-20 | Mitsubishi Electric Corporation | Rotary electric machine |
US9300174B2 (en) | 2013-04-09 | 2016-03-29 | Mitsubishi Electric Corporation | Stator-core fixing structure for rotating electric machine |
JP2015089173A (ja) * | 2013-10-29 | 2015-05-07 | 三菱電機株式会社 | 回転電機 |
US10505410B2 (en) | 2013-11-08 | 2019-12-10 | Mitsubishi Electric Corporation | Rotary electric machine having bolt passage members |
JP2019097279A (ja) * | 2017-11-21 | 2019-06-20 | 三菱重工業株式会社 | 電動コンプレッサー |
US11088592B2 (en) | 2017-11-21 | 2021-08-10 | Mitsubishi Heavy Industries, Ltd. | Electric compressor |
Also Published As
Publication number | Publication date |
---|---|
EP2521245B1 (en) | 2016-12-07 |
EP2521245A4 (en) | 2014-12-24 |
CN102687372A (zh) | 2012-09-19 |
CN102687372B (zh) | 2014-08-13 |
US20120242186A1 (en) | 2012-09-27 |
JPWO2011080817A1 (ja) | 2013-05-09 |
US8786159B2 (en) | 2014-07-22 |
JP5488614B2 (ja) | 2014-05-14 |
EP2521245A1 (en) | 2012-11-07 |
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