JP2004129358A

JP2004129358A - Rotor of rotary electric machine

Info

Publication number: JP2004129358A
Application number: JP2002288790A
Authority: JP
Inventors: Hiroyuki Akita; 秋田　裕之; Yoshito Asao; 浅尾　淑人; Akira Hashimoto; 橋本　昭; Masaru Kuribayashi; 栗林　勝; Nobuhiko Fujita; 藤田　暢彦; Haruyuki Yonetani; 米谷　晴之; Masaya Inoue; 井上　正哉
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2002-10-01
Filing date: 2002-10-01
Publication date: 2004-04-22
Anticipated expiration: 2022-10-01
Also published as: JP3983640B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotor of a rotary electric machine that allows high speed rotation for improved output. <P>SOLUTION: A laminated core member 38 is formed into cylindrical shape by laminating annular plate members, and a plurality of salient poles are partitioned and formed in circumferential direction by a through hole that penetrates from one end side of the cylinder toward the other end side with a thinwall left out on the outer peripheral side. A field coil 45 is attached inside the laminated core member 38. A pair of pole core members 31 comprises a plurality of claw-like magnetic poles 34 formed radially at a disc-like base 33 and the outer peripheral part of it with a prescribed pitch, in which the base 33 pinches both ends of the laminated core member 38, each claw-like magnetic pole 34 axially penetrates the salient poles alternately of the laminated core member 38, and the tip of each of the claw-like magnetic pole 34 is bonded to the base 33 on corresponding side through a non-magnetic member 46. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
この発明は、例えば車載の交流発電機等のように高速回転で駆動される回転電機の回転子に係り、ポールコア部材の磁極部を積層コア部材で保持した回転子構造に関するものである。
【０００２】
【従来の技術】
一般に、ランデル型の回転電機の回転子は、図１６に示すように、円盤状の基部１およびこの基部１の外周部に所定のピッチを介して形成される複数の爪状磁極２でなる一対のポールコア部材３を、それぞれの各爪状磁極２が周方向に交互に噛み合うように、基部１同士を両側から突き合わせて、回転軸４に固着一体させる構成になっている。このため、図示はしないが稼働中に発生する遠心力により、爪状磁極２が径方向に変形して固定子の内周面に接触する恐れがあるので、予めその変形分だけ固定子との間のエアギャップを大きくして余裕を持たせておく必要があるため、出力が低減されるという問題点がある（例えば、特許文献１参照）。
【０００３】
このような従来のランデル型の回転電機の回転子の問題点を解消するための先行技術として、この出願と同一の出願人により特願２００２−２４２７８７号が出願されている。
図１７はこの先行技術としての回転電機の回転子の構成を示す断面図、図１８および１９は図１７における線ＸＶＩＩＩ−ＸＶＩＩＩおよび線ＸＩＸ−ＸＩＸに沿った断面をそれぞれ示す断面図、図２０は図１７におけるポールコア部材の構成を示す斜視図である。
【０００４】
図において、１１は円盤状の基部１２、この基部１２の外周部に周方向に所定のピッチを介して先細に形成される複数の爪状磁極１３、および基部１２の爪状磁極１３が形成される側の中央部に突出して形成され、中央部に回転子軸１４が貫通する貫通穴１５が形成されるボス部１６でなる一対のポールコア部材、１７は環状板部材１８を積層して円筒状に形成される積層コア部材で、外周部には一端側から他端側に向けて、外周側に薄肉部１９を残し且つスキューされて貫通する複数の貫通穴２０が形成されており、これら各貫通穴２０により周方向に複数の突極部２１が区画して形成されている。
【０００５】
又、これら各突極部２１には、両ポールコア部材１１の各爪状磁極１３が貫通して嵌合可能な貫通穴２２が、軸方向に延在してそれぞれ形成されており、又、突極部２１を区画して形成する各貫通穴２０には永久磁石２３が嵌挿されている。
そして、両ポールコア部材１１は、予め積層コア部材７の内側に界磁コイル２４が挿入された後、積層コア部材１７の両側から各爪状磁極１３がそれぞれ各貫通穴２２を貫通してお互いに噛み合い、且つ両ボス部１６の端面が当接するように突き合わされ、これにより界磁コイル２４は両ボス１６と積層コア部材１７の内周面との間に装着される。その後、両ボス部１６の各貫通穴１５に回転子軸１４が貫通され、固着一体化されることにより回転子が構成されている。
【０００６】
【特許文献１】
特開２００１−２３１１８８号公報
【０００７】
【発明が解決しようとする課題】
先行技術としての回転電機の回転子は以上のように構成され、積層コア部材１７の外周部に外周側に薄肉部１９を残して貫通する貫通穴２０により複数の突極部２１を区画して形成し、これら各突極部２１内軸方向にそれぞれ貫通して形成される貫通穴２２に爪状磁極１３をそれぞれ貫通させ、各突極部２１で爪状磁極１３をそれぞれ保持させることにより、遠心力で変形するのを抑制して固定子（図示せず）との間のギャップを小さくし出力の向上を図り、又、薄肉部１９により貫通穴２０が積層コア部材１７の外周側に開口するのを防止することにより、回転時に騒音が発生することが無くなり信頼性の向上を図ることを可能にし、さらに、この貫通穴２２を永久磁石２３の嵌挿穴として兼用させることにより、貫通穴を別途形成する工程を削減してコストの低減を図ることも可能にしている。
【０００８】
しかしながら、このような回転子が車載の発電機に適用される場合、回転数が例えばエンジンの３倍近く高くなるため、各突極部２１で保持されているとはいうものの、片持ち支持構造の各爪状磁極１３を十分に保持することは困難となる。又、薄肉部１９は両突極部２１間の磁束漏れを少なくして損失を低減するためには薄い程良いが、貫通穴２０内に永久磁石２３を嵌挿させているので、この永久磁石２３が遠心力により薄肉部１９を突き破って飛び出すのを防止するためには、薄くするのにも限度がある等という問題点があった。
【０００９】
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、高速回転に耐え且つ出力の向上が可能な回転電機の回転子を提供することを目的とするものである。
【００１０】
【課題を解決するための手段】
この発明の請求項１に係る回転電機の回転子は、環状板部材を積層して円筒状に形成され、外周部に円筒の一端側から他端側に向けて外周側に薄肉部を残して貫通する貫通穴により、周方向に複数の突極部が区画して形成される積層コア部材と、積層コア部材の内側に装着される界磁コイルと、円盤状の基部および基部の外周部に周方向に所定のピッチを介して形成される複数の爪状磁極でなり、基部により積層コア部材の両端を挟持するとともに、各爪状磁極が積層コア部材の各突極部をそれぞれ交互に軸方向に貫通し、各爪状磁極の先端部が相対する側の基部に非磁性部材を介してそれぞれ固着される一対のポールコア部材とを備えたものである。
【００１１】
又、この発明の請求項２に係る回転電機の回転子は、環状板部材を積層して円筒状に形成され、外周部に円筒の一端側から他端側に向けて外周側に薄肉部を残して貫通する貫通穴により、周方向に複数の突極部が区画して形成される積層コア部材と、積層コア部材の内側に装着される界磁コイルと、円盤状の基部および一端側が基部の外周近傍部に周方向に所定のピッチを介して固着される複数のピン状磁極でなり、基部により積層コア部材の両端を挟持するとともに、各ピン状磁極が積層コア部材の各突極部をそれぞれ交互に軸方向に貫通し、各ピン状磁極の他端が相対する側の基部に非磁性部材を介してそれぞれ固着される一対のポールコア部材とを備えたものである。
【００１２】
又、この発明の請求項３に係る回転電機の回転子は、請求項１または２において、非磁性部材を、ポールコア部材の基部に埋設され、爪状磁極またはピン状磁極の他端が嵌合可能な嵌合穴を有したものとしたものである。
【００１３】
又、この発明の請求項４に係る回転電機の回転子は、請求項１または２において、突極部を区画する貫通穴を略断面矩形状に形成し、内部に永久磁石を嵌挿するようにしたものである。
【００１４】
又、この発明の請求項５に係る回転電機の回転子は、請求項４において、永久磁石が嵌挿される貫通穴を、長尺方向が積層コア部材の中心から延びる放射線に対して所定の角度を有した方向を向くように形成したものである。
【００１５】
又、この発明の請求項６に係る回転電機の回転子は、請求項５において、一部の貫通穴を、相隣なる同士が外周側で接近するように形成したものである。
【００１６】
又、この発明の請求項７に係る回転電機の回転子は、請求項５または６において、貫通穴の積層コア部材の外周側に位置する内面に段部を形成するようにしたものである。
【００１７】
又、この発明の請求項８に係る回転電機の回転子は、請求項５または６において、永久磁石の側方に樹脂を埋設するようにしたものである。
【００１８】
又、この発明の請求項９に係る回転電機の回転子は、請求項１または２において、積層コア部材の薄肉部を硬化処理するようにしたものである。
【００１９】
【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回転子の構成を示す断面図、図２は図１における回転電機の回転子を軸方向一端側から見た正面図、図３は図１における回転電機の回転子を軸方向他端側から見た正面図、図４は図１における線ＩＶ−ＩＶに沿った断面を示す断面図、図５は図１における線Ｖ−Ｖに沿った断面を示す断面図、図６は図１における線ＶＩ−ＶＩに沿った断面を示す断面図、図７は図１における線ＶＩＩ−ＶＩＩに沿った断面を示す断面図である。
【００２０】
図において、３１は外周部の周方向に所定のピッチを介して、あり溝状の切り欠き３２が形成された円盤状の基部３３と、この基部３３の外周部の周方向に切り欠き３２と交互に、所定のピッチを介し突出して形成される複数の爪状磁極３４とでなる一対のポールコア部材で、基部３３の爪状磁極３４が突出される側の中央部には、ボス部３５が突出して形成されるとともに、その中心部には回転子軸３６が貫通する貫通穴３７が形成されている。
【００２１】
３８は環状板部材３９を積層して円筒状に形成される積層コア部材で、外周部には一端側から他端側に向けて、外周側に薄肉部４０を残して貫通する略断面矩形状の複数の貫通穴４１が形成されており、これら各貫通穴４１により区画されて周方向に複数の突極部４２が形成されている。そして、これら各突極部４２には、両ポールコア部材３１の各爪状磁極３４が貫通して嵌合可能な貫通穴４３が、軸方向に延在してそれぞれ形成されている。４４は突極部４２を区画して形成する各貫通穴４１を貫通し嵌合される複数の永久磁石、４５は両ポールコア部材３１のボス部３５に嵌合され、積層コア部材３８の内側に装着される界磁コイル、４６は両ポールコア部材３１の切り欠き３２に嵌合し、中央部に爪状磁極３４が嵌合可能な嵌合穴４７が形成された例えば非磁性鋼等でなる略台形状の非磁性部材である。
【００２２】
そして、図１に示すように、予め積層コア部材３８の内側に界磁コイル４５を挿入した後、積層コア部材３８の両側から両ポールコア部材３１を互いに近づく方向に移動させ、各爪状磁極３４をそれぞれ各貫通穴４３に貫通させ、その先端を互いに相手側の切り欠き３２に嵌合された非磁性部材４６の嵌合穴４７にそれぞれ嵌合させるとともに、両ボス部３５の先端が当接するように突き合わせることにより、両ポールコア部材３１の各爪状磁極３４は積層コア部材３８内で互いに噛み合った状態となり、界磁コイル４５は両ボス部３５と積層コア部材３８の内周面との間に装着される。最後に、両ボス部３５の各貫通穴３７に回転子軸３６が貫通され、固着されることにより回転子が完成する。
【００２３】
このように上記実施の形態１によれば、ポールコア部材３１の各爪状磁極３４を積層コア部材３８の各突極部４２で保持するとともに、さらにその先端を互いに相手側のポールコア部材３１の切り欠き３２に嵌合された非磁性部材４６の嵌合穴４７に嵌合させて、基部３３側でも保持して両端支持構造としているので、高速回転稼動により大きな遠心力が働いても変形するのを防止することができるため、固定子（図示せず）との間のギャップに余裕を持たせる必要が無くなり、ギャップを必要最小限に抑えることができるので、高速回転に耐え且つ出力の向上を図ることが可能になる。
【００２４】
なお、上記構成ではポールコア部材３１の各爪状磁極３４の先端を保持する部材として、ポールコア部材３１の基部３３に形成されたあり溝状の切り欠き３２に嵌合し、中央部に爪状磁極３４が嵌合可能な嵌合穴４７を有する略台形状の非磁性部材４６を適用し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、図示はしないが例えば切り欠き３２に代えて円形状の貫通穴を配置し、この貫通穴に円形状の非磁性部材を嵌合させるようにしても良く、要するに、相手側のポールコア部材の基部に嵌合された非磁性部材で爪状磁極の先端を保持することにより、簡単な構成で両端支持構造とし、機械的強度を上げるとともに、磁気的な損失を抑制してさらに出力の向上を図ることが可能になる。
【００２５】
又、上記では詳しく説明しなかったが、図から明らかなように突極部４２を区画する貫通穴４１を略断面矩形状に形成し、内部に永久磁石４４を嵌挿するようにしているので、永久磁石４４を嵌挿させるための貫通穴を別途形成する工程が削減されるために、コストの低減を図ることができる。
又、この貫通穴４１を、長尺方向が積層コア部材３８の中心から延びる放射線に対して、所定の角度を有した方向に向くように形成しているので、永久磁石４４に作用する遠心力を貫通穴４１の長尺方向内側面で受け、薄肉部４０にかかる負担を軽減させることができるため、さらに高速回転に耐えることが可能になる。
【００２６】
又、貫通穴４１の放射線に対する角度が、相隣なる同士（例えば図４中※印で示す貫通穴４１同士）で、外周側で近づく方向に向く部分では楔効果によりさらに耐力を上げることも可能となる。
さらに又、上記のように放射線に対して所定の角度を有して形成された貫通穴４１に嵌挿された永久磁石４４の側方、すなわち貫通穴４１の内側面との間に樹脂を埋め込んで、固めるようにしても上記と同様、さらに耐力を上げることが可能となる。
【００２７】
実施の形態２．
図８はこの発明の実施の形態２における回転電機の回転子の構成を示す斜視図、図９は図８における回転電機の回転子の構成を展開して示す斜視図、図１０は図８における回転電機の回転子の構成を示す断面図、図１１は図１０における線ＸＩ−ＸＩに沿った断面を示す断面図、図１２は図１０における線ＸＩＩ−ＸＩＩに沿った断面を示す断面図、図１３は図１０における線ＸＩＩＩ−ＸＩＩＩに沿った断面を示す断面図、図１４は図１０における線ＸＩＶ−ＸＩＶに沿った断面を示す断面図である。
【００２８】
図において、５１は外周部の周方向に所定のピッチを介して、あり溝状の切り欠き５２および貫通穴５３が交互に形成され、一側中央部にボス部５４が突出して形成されるとともに、その中心部には回転子軸５５が貫通する貫通穴５６が形成された基部、５７はこの基部５１の貫通穴５６を貫通して嵌合可能なピン状磁極で、一端側に径太な係止部５８が形成されており、基部５１と共にポールコア部材５９を構成している。そして、このポールコア部材５９は互いの切り欠き５２が周方向に互い違いとなるように一対配置されている。
【００２９】
６０は環状板部材６１を積層して円筒状に形成される積層コア部材で、外周部にはポールコア部材５９の切り欠き５２の中央部、および貫通穴５３とそれぞれ対応する位置に、ピン状磁極５７が貫通可能な複数の貫通穴６２が形成されるとともに、これら各貫通穴６２間の一端側から他端側に向けて、外周側に薄肉部６３を残して貫通する略断面矩形状の複数の貫通穴６４が形成されており、これら各貫通穴６４により区画されて周方向に複数の突極部６５が形成されている。
【００３０】
６６は各貫通穴６４を貫通して嵌合される複数の永久磁石、６７は両ポールコア部材５９のボス部５４に嵌合され、積層コア部材６０の内側に装着される界磁コイル、６８は両ポールコア部材５９の切り欠き５２に嵌合し、中央部にピン状磁極５７の先端が嵌着される嵌合穴６９が形成された、例えば非磁性鋼等でなる略台形状の非磁性部材である。
【００３１】
そして、図１０に示すように、予め積層コア部材６０の内側に界磁コイル６７を挿入した後、積層コア部材６０の両側から、各貫通穴５３にそれぞれピン状磁極５７が貫通されるとともに、各切り欠き５２にそれぞれ非磁性部材６８が嵌合された両ポールコア部材５９を互いに近づく方向に移動させ、各ピン状磁極５７の先端を相手側の非磁性部材６８の嵌合穴６９に嵌合させるとともに、両ボス部５４の先端が当接するように突き合わせる。すると、両ポールコア部材５９の各ピン状磁極５７は、積層コア部材６０内で互いに噛み合った状態となり、界磁コイル６７は両ボス部５４と積層コア部材６０の内周面との間に装着される。そして最後に、各ピン状磁極５７と非磁性部材６８の間を、例えば溶接、接着等で固着した後、両ボス部５４の各貫通穴５６に回転子軸５５が貫通され、固着されることにより回転子が完成する。なお、図９では上方に位置する基部５１側のピン状磁極５７が省略されている。
【００３２】
このように上記実施の形態２によれば、ポールコア部材５９の各ピン状磁極５７を積層コア部材６０の各突極部６５で保持するとともに、さらにその先端を相手側のポールコア部材５９の非磁性部材６８の嵌合穴６９に嵌合させ、基部５１側でも保持して両端支持構造としているので、高速回転稼動により大きな遠心力が働いても変形するのを防止することができるため、固定子（図示せず）との間のギャップに余裕を持たせる必要が無くなり、ギャップを必要最小限に抑えることができるので、高速回転に耐え且つ出力の向上を図ることが可能になる。
【００３３】
実施の形態３．
図１５はこの発明の実施の形態３における回転電機の回転子の要部の構成を示す部分詳細図である。
図において、上記実施の形態２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。７０は突極部６５を区画して形成し永久磁石６６が貫通して嵌合される貫通穴で、薄肉部７１を残した側の内面に段部７２が形成され、この段部７２の部分だけ薄肉部７１の肉厚が厚くなっている。
【００３４】
このように上記実施の形態３によれば、永久磁石６６が嵌合される貫通穴７０の薄肉部７１を残した側の内面に段部７２を形成し、この段部７２で永久磁石６６の端面を支持しているので、薄肉部７１に負担をかけることなく肉厚の厚い段部７２で遠心力を受けることができるため、さらに高速回転に耐えることが可能になる。なお、上記各実施の形態１、２においては説明しなかったが、それぞれ各薄肉部を例えば溶接、冷鍛等を施すことにより硬化処理しても、耐久力を上げることが可能になる。
【００３５】
【発明の効果】
以上のように、この発明の請求項１によれば、環状板部材を積層して円筒状に形成され、外周部に円筒の一端側から他端側に向けて外周側に薄肉部を残して貫通する貫通穴により、周方向に複数の突極部が区画して形成される積層コア部材と、積層コア部材の内側に装着される界磁コイルと、円盤状の基部および基部の外周部に周方向に所定のピッチを介して形成される複数の爪状磁極でなり、基部により積層コア部材の両端を挟持するとともに、各爪状磁極が積層コア部材の各突極部をそれぞれ交互に軸方向に貫通し、各爪状磁極の先端部が相対する側の基部に非磁性部材を介してそれぞれ固着される一対のポールコア部材とを備えたので、高速回転に耐え且つ出力の向上が可能な回転電機の回転子を提供することができる。
【００３６】
又、この発明の請求項２によれば、環状板部材を積層して円筒状に形成され、外周部に円筒の一端側から他端側に向けて外周側に薄肉部を残して貫通する貫通穴により、周方向に複数の突極部が区画して形成される積層コア部材と、積層コア部材の内側に装着される界磁コイルと、円盤状の基部および一端側が基部の外周近傍部に周方向に所定のピッチを介して固着される複数のピン状磁極でなり、基部により積層コア部材の両端を挟持するとともに、各ピン状磁極が積層コア部材の各突極部をそれぞれ交互に軸方向に貫通し、各ピン状磁極の他端が相対する側の基部に非磁性部材を介してそれぞれ固着される一対のポールコア部材とを備えたので、高速回転に耐え且つ出力の向上が可能な回転電機の回転子を提供することができる。
【００３７】
又、この発明の請求項３によれば、請求項１または２において、非磁性部材を、ポールコア部材の基部に埋設され、爪状磁極またはピン状磁極の他端が嵌合可能な嵌合穴を有したものとしたので、簡単な構成で磁気的な損失を抑えるとともに、機械的強度の向上を図ることが可能な回転電機の回転子を提供することができる。
【００３８】
又、この発明の請求項４によれば、請求項１または２において、突極部を区画する貫通穴を略断面矩形状に形成し、内部に永久磁石を嵌挿するようにしたので、コストの低減を図ることが可能な回転電機の回転子を提供することができる。
【００３９】
又、この発明の請求項５によれば、請求項４において、永久磁石が嵌挿される貫通穴を、長尺方向が積層コア部材の中心から延びる放射線に対して所定の角度を有した方向を向くように形成したので、コストの低減は勿論のこと、高速回転に耐えることが可能な回転電機の回転子を提供することができる。
【００４０】
又、この発明の請求項６によれば、請求項５において、一部の貫通穴を、相隣なる同士が外周側で接近するように形成したので、高速回転にさらに耐えることが可能な回転電機の回転子を提供することができる。
【００４１】
又、この発明の請求項７によれば、請求項５または６において、貫通穴の積層コア部材の外周側に位置する内面に段部を形成するようにしたので、高速回転にさらに耐えることが可能な回転電機の回転子を提供することができる。
【００４２】
又、この発明の請求項８によれば、請求項５または６において、永久磁石の側方に樹脂を埋設するようにしたので、高速回転にさらに耐えることが可能な回転電機の回転子を提供することができる。
【００４３】
又、この発明の請求項９によれば、請求項１または２において、積層コア部材の薄肉部を硬化処理するようにしたので、高速回転にさらに耐えることが可能な回転電機の回転子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回転子の構成を示す断面図である。
【図２】図１における回転電機の回転子を軸方向一端側から見た正面図である。
【図３】図１における回転電機の回転子を軸方向他端側から見た正面図である。
【図４】図１における線ＩＶ−ＩＶに沿った断面を示す断面図である。
【図５】図１における線Ｖ−Ｖに沿った断面を示す断面図である。
【図６】図１における線ＶＩ−ＶＩに沿った断面を示す断面図である。
【図７】図１における線ＶＩＩ−ＶＩＩに沿った断面を示す断面図である。
【図８】この発明の実施の形態２における回転電機の回転子の構成を示す斜視図である。
【図９】図８における回転電機の回転子の構成を展開して示す斜視図である。
【図１０】図８における回転電機の回転子の構成を示す断面図である。
【図１１】図１０における線ＸＩ−ＸＩに沿った断面を示す断面図である。
【図１２】図１０における線ＸＩＩ−ＸＩＩに沿った断面を示す断面図である。
【図１３】図１０における線ＸＩＩＩ−ＸＩＩＩに沿った断面を示す断面図である。
【図１４】図１０における線ＸＩＶ−ＸＩＶに沿った断面を示す断面図である。
【図１５】この発明の実施の形態３における回転電機の回転子の要部の構成を示す部分詳細図である。
【図１６】従来の回転電機の回転子の構成を示す斜視図である。
【図１７】先行技術における回転電機の回転子の構成を示す断面図である。
【図１８】図１７における線ＸＶＩＩＩ−ＸＶＩＩＩに沿った断面を示す断面図である。
【図１９】図１７における線ＸＩＸ−ＸＩＸに沿った断面を示す断面図である。
【図２０】図１７におけるポールコア部材の構成を示す斜視図である。
【符号の説明】
３１，５９　ポールコア部材、３２，５２　切り欠き、３３，５１　基部、
３４　爪状磁極、３６，５５　回転子軸、３８，６０　積層コア部材、
４０，６３，７１　薄肉部、４１，６４，７０　貫通穴、４２，６５　突極部、
４４，６６　永久磁石、４５，６７　界磁コイル、４６，６８　非磁性部材、
４７，６９　嵌合穴、５７　ピン状磁極、７２　段部。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotor of a rotating electric machine driven at high speed, such as an on-board AC generator, and more particularly to a rotor structure in which a magnetic pole portion of a pole core member is held by a laminated core member.
[0002]
[Prior art]
Generally, as shown in FIG. 16, a rotor of a Landel type rotating electric machine includes a pair of a disk-shaped base 1 and a plurality of claw-shaped magnetic poles 2 formed at a predetermined pitch on an outer periphery of the base 1. The base portions 1 are butted from both sides and are integrally fixed to the rotating shaft 4 so that the claw-shaped magnetic poles 2 alternately mesh in the circumferential direction. For this reason, although not shown, the centrifugal force generated during operation may cause the claw-shaped magnetic pole 2 to deform in the radial direction and come into contact with the inner peripheral surface of the stator. There is a problem that the output is reduced because it is necessary to increase the gap between the air gaps so as to have a margin (for example, see Patent Document 1).
[0003]
Japanese Patent Application No. 2002-242787 has been filed by the same applicant as the prior art as a prior art for solving such a problem of the rotor of the conventional Landel type rotary electric machine.
FIG. 17 is a cross-sectional view showing a configuration of a rotor of a rotary electric machine as the prior art, FIGS. 18 and 19 are cross-sectional views respectively showing cross sections along lines XVIII-XVIII and XIX-XIX in FIG. 17, and FIG. It is a perspective view which shows the structure of the pole core member in FIG.
[0004]
In the figure, reference numeral 11 denotes a disk-shaped base 12, a plurality of claw-shaped magnetic poles 13 tapered around the outer periphery of the base 12 at a predetermined pitch in the circumferential direction, and a claw-shaped magnetic pole 13 of the base 12 are formed. A pair of pole core members, each of which includes a boss portion 16 formed at a central portion on the opposite side and formed with a through hole 15 through which the rotor shaft 14 penetrates, a cylindrical member 17 is formed by laminating an annular plate member 18. A plurality of through holes 20 are formed in the outer peripheral portion from the one end side to the other end side, leaving a thin portion 19 on the outer peripheral side and skewed therethrough. A plurality of salient pole portions 21 are defined in the circumferential direction by the through holes 20.
[0005]
Each of the salient pole portions 21 is formed with a through hole 22 extending in the axial direction, through which the claw-shaped magnetic poles 13 of both pole core members 11 can be inserted and fitted. A permanent magnet 23 is inserted into each through hole 20 formed by partitioning the pole portion 21.
After the field coil 24 is inserted into the laminated core member 7 in advance, the claw-shaped magnetic poles 13 penetrate through the through holes 22 from both sides of the laminated core member 17 so that the two pole core members 11 The bosses 16 are engaged with each other so that the end faces of the bosses 16 are in contact with each other, whereby the field coil 24 is mounted between the bosses 16 and the inner peripheral surface of the laminated core member 17. Thereafter, the rotor shaft 14 is penetrated through each through hole 15 of both boss portions 16 and is fixedly integrated to form a rotor.
[0006]
[Patent Document 1]
JP 2001-231188 A
[Problems to be solved by the invention]
A rotor of a rotating electric machine as a prior art is configured as described above, and a plurality of salient pole portions 21 are defined by a through hole 20 penetrating the outer peripheral portion of the laminated core member 17 while leaving a thin portion 19 on the outer peripheral side. By forming the claw-shaped magnetic poles 13 in the through-holes 22 formed through the respective salient pole portions 21 in the axial direction, and holding the claw-shaped magnetic poles 13 in the respective salient pole portions 21, The gap with the stator (not shown) is reduced by suppressing the deformation due to the centrifugal force to improve the output, and the thin portion 19 opens the through hole 20 on the outer peripheral side of the laminated core member 17. By preventing the occurrence of noise, it is possible to eliminate noise during rotation and to improve reliability. Further, by using the through hole 22 as a fitting hole for the permanent magnet 23, Forming separately It is also possible to reduce the cost by reducing the.
[0008]
However, when such a rotor is applied to a generator mounted on a vehicle, the number of revolutions is, for example, nearly three times higher than that of the engine. It is difficult to sufficiently hold each of the claw-shaped magnetic poles 13. The thinner portion 19 is preferably thinner to reduce the magnetic flux leakage between the two salient pole portions 21 and reduce the loss. However, since the permanent magnet 23 is inserted into the through hole 20, There is a problem in that there is a limit to thinning in order to prevent the 23 from piercing through the thin portion 19 due to centrifugal force.
[0009]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide a rotor of a rotating electric machine that can withstand high-speed rotation and that can improve output.
[0010]
[Means for Solving the Problems]
The rotor of the rotating electric machine according to claim 1 of the present invention is formed in a cylindrical shape by laminating annular plate members, and leaving a thin portion on the outer peripheral portion from the one end side to the other end side of the cylinder on the outer peripheral portion. A laminated core member formed by dividing a plurality of salient pole portions in the circumferential direction by a penetrating through-hole, a field coil mounted inside the laminated core member, a disc-shaped base and an outer peripheral portion of the base. It consists of a plurality of claw-shaped magnetic poles formed at a predetermined pitch in the circumferential direction, sandwiches both ends of the laminated core member by the base, and each claw-shaped magnetic pole alternately pivots each salient pole portion of the laminated core member. And a pair of pole core members that penetrate in the direction and are fixed to the base on the side opposite to the tip end of each claw-shaped magnetic pole via a non-magnetic member.
[0011]
Further, the rotor of the rotating electric machine according to claim 2 of the present invention is formed in a cylindrical shape by laminating annular plate members, and has a thin portion on the outer peripheral portion from the one end side to the other end side of the cylinder on the outer peripheral portion. A laminated core member formed by partitioning a plurality of salient pole portions in the circumferential direction by a through hole that is left through, a field coil mounted inside the laminated core member, a disc-shaped base and one end side formed as base portions. A plurality of pin-shaped magnetic poles fixed at a predetermined pitch in the circumferential direction in the vicinity of the outer periphery of the laminated core member, with both ends of the laminated core member being sandwiched by the base, and each pin-shaped magnetic pole being each salient pole portion of the laminated core member. Are alternately penetrated in the axial direction, and a pair of pole core members are respectively fixed to the base portions on the opposite sides of the other ends of the pin-shaped magnetic poles via non-magnetic members.
[0012]
According to a third aspect of the present invention, in the rotor for a rotating electric machine according to the first or second aspect, the nonmagnetic member is embedded in the base of the pole core member, and the other end of the claw-shaped magnetic pole or the pin-shaped magnetic pole is fitted. It has a possible fitting hole.
[0013]
According to a fourth aspect of the present invention, there is provided a rotor for a rotary electric machine according to the first or second aspect, wherein a through-hole defining the salient pole portion is formed in a substantially rectangular cross section, and a permanent magnet is inserted therein. It was made.
[0014]
According to a fifth aspect of the present invention, in the rotor of the rotating electric machine according to the fourth aspect, the through hole into which the permanent magnet is inserted is formed at a predetermined angle with respect to radiation whose longitudinal direction extends from the center of the laminated core member. It is formed so as to face a direction having
[0015]
Also, in the rotor of the rotary electric machine according to claim 6 of the present invention, in claim 5, some of the through holes are formed so that adjacent ones approach each other on the outer peripheral side.
[0016]
According to a seventh aspect of the present invention, there is provided a rotor for a rotary electric machine according to the fifth or sixth aspect, wherein a step is formed on an inner surface of the through-hole located on the outer peripheral side of the laminated core member.
[0017]
According to an eighth aspect of the present invention, there is provided a rotor for a rotary electric machine according to the fifth or sixth aspect, wherein a resin is buried beside the permanent magnet.
[0018]
According to a ninth aspect of the present invention, there is provided a rotor for a rotary electric machine according to the first or second aspect, wherein a thin portion of the laminated core member is subjected to hardening treatment.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a sectional view showing a configuration of a rotor of a rotary electric machine according to Embodiment 1 of the present invention, FIG. 2 is a front view of the rotor of the rotary electric machine in FIG. 1 viewed from one axial end, and FIG. 1 is a front view of the rotor of the rotating electric machine viewed from the other end side in the axial direction, FIG. 4 is a sectional view showing a section taken along line IV-IV in FIG. 1, and FIG. 5 is a section taken along line VV in FIG. FIG. 6 is a cross-sectional view showing a cross section taken along line VI-VI in FIG. 1, and FIG. 7 is a cross-sectional view showing a cross section taken along line VII-VII in FIG.
[0020]
In the figure, reference numeral 31 denotes a disc-shaped base 33 having a groove-shaped notch 32 formed at a predetermined pitch in the circumferential direction of the outer peripheral portion, and a notch 32 in the circumferential direction of the outer peripheral portion of the base 33. A pair of pole core members composed of a plurality of claw-shaped magnetic poles 34 formed alternately and protruding through a predetermined pitch, and a boss 35 is provided at the center of the base 33 on the side where the claw-shaped magnetic poles 34 protrude. It is formed so as to protrude, and a through hole 37 through which the rotor shaft 36 penetrates is formed at the center thereof.
[0021]
Numeral 38 is a laminated core member formed by laminating annular plate members 39 into a cylindrical shape. The laminated core member has a substantially rectangular cross section penetrating from the one end side to the other end side, leaving a thin portion 40 on the outer peripheral side. Are formed, and a plurality of salient pole portions 42 are formed in the circumferential direction by being partitioned by the respective through holes 41. Each of the salient pole portions 42 is formed with a through-hole 43 extending in the axial direction, through which the claw-shaped magnetic poles 34 of the pole core members 31 can be fitted. A plurality of permanent magnets 44 are fitted through the through holes 41 formed by dividing the salient pole portions 42, and a plurality of permanent magnets 45 are fitted into the boss portions 35 of the pole core members 31. The field coil 46 to be mounted is fitted into the notch 32 of both pole core members 31 and has a fitting hole 47 formed at the center thereof into which the claw-shaped magnetic pole 34 can be fitted. It is a trapezoidal non-magnetic member.
[0022]
Then, as shown in FIG. 1, after inserting the field coil 45 inside the laminated core member 38 in advance, the two pole core members 31 are moved from both sides of the laminated core member 38 in a direction approaching each other, and each claw-shaped magnetic pole 34 is moved. Are respectively inserted into the through holes 43, the tips of which are respectively fitted into the fitting holes 47 of the nonmagnetic member 46 which are fitted into the notches 32 on the other side, and the tips of both bosses 35 abut. As a result, the claw-shaped magnetic poles 34 of the pole core members 31 are engaged with each other in the laminated core member 38, and the field coil 45 is formed between the boss portions 35 and the inner peripheral surface of the laminated core member 38. Attached in between. Finally, the rotor shaft 36 penetrates through the through holes 37 of both bosses 35 and is fixed, thereby completing the rotor.
[0023]
As described above, according to the first embodiment, each of the claw-shaped magnetic poles 34 of the pole core member 31 is held by each of the salient pole portions 42 of the laminated core member 38, and the tips thereof are further cut off from the pole core members 31 on the other side. It is fitted in the fitting hole 47 of the non-magnetic member 46 fitted in the notch 32 and is held on the base 33 side as well, so that both ends are supported. Therefore, it is not necessary to provide a margin for a gap with a stator (not shown), and the gap can be minimized. It becomes possible to plan.
[0024]
In the above configuration, as a member for holding the tip of each claw-shaped magnetic pole 34 of the pole core member 31, a claw-shaped notch 32 formed in the base 33 of the pole core member 31 is fitted, and a claw-shaped magnetic pole is provided at the center. The case where the non-magnetic member 46 having a substantially trapezoidal shape having a fitting hole 47 in which the fitting 34 can be fitted has been described. However, the present invention is not limited to this. A circular through-hole may be arranged, and a circular non-magnetic member may be fitted into this through-hole. In short, the claw-shaped magnetic pole is formed by a non-magnetic member fitted to the base of the other pole core member. By holding the leading end, it is possible to increase the mechanical strength, suppress the magnetic loss, and further improve the output while providing a simple structure for both ends supporting structure.
[0025]
Although not described in detail above, as is apparent from the drawing, the through-hole 41 for defining the salient pole portion 42 is formed in a substantially rectangular cross section, and the permanent magnet 44 is inserted therein. Since the step of separately forming a through hole for inserting the permanent magnet 44 is reduced, the cost can be reduced.
Further, since the through hole 41 is formed so that the long direction faces a direction having a predetermined angle with respect to the radiation extending from the center of the laminated core member 38, the centrifugal force acting on the permanent magnet 44 is formed. Can be received on the inner surface of the through hole 41 in the longitudinal direction and the load on the thin portion 40 can be reduced, so that it is possible to withstand high-speed rotation.
[0026]
In addition, when the angle of the through hole 41 with respect to the radiation is adjacent to each other (for example, the through holes 41 indicated by the mark * in FIG. 4), and the part facing the approach direction on the outer peripheral side can further increase the proof strength by the wedge effect. It becomes.
Furthermore, resin is embedded between the side of the permanent magnet 44 inserted into the through hole 41 formed at a predetermined angle with respect to the radiation as described above, that is, the inner surface of the through hole 41. Thus, even if the material is hardened, the proof stress can be further increased in the same manner as described above.
[0027]
Embodiment 2 FIG.
8 is a perspective view showing a configuration of a rotor of the rotary electric machine according to Embodiment 2 of the present invention, FIG. 9 is an exploded perspective view showing a configuration of the rotor of the rotary electric machine in FIG. 8, and FIG. FIG. 11 is a cross-sectional view showing a configuration of a rotor of a rotating electric machine, FIG. 11 is a cross-sectional view showing a cross section along line XI-XI in FIG. 10, FIG. 12 is a cross-sectional view showing a cross section along line XII-XII in FIG. FIG. 13 is a sectional view showing a section taken along line XIII-XIII in FIG. 10, and FIG. 14 is a sectional view showing a section taken along line XIV-XIV in FIG.
[0028]
In the figure, reference numeral 51 denotes a groove-shaped notch 52 and a through hole 53 alternately formed at a predetermined pitch in a circumferential direction of an outer peripheral portion, and a boss portion 54 is formed so as to protrude at a central portion on one side. A base portion having a through hole 56 formed at the center thereof and through which the rotor shaft 55 penetrates is formed. A pin-like magnetic pole 57 which can be fitted through the through hole 56 of the base portion 51 has a large diameter at one end. An engaging portion 58 is formed, and forms a pole core member 59 together with the base 51. The pole core members 59 are arranged in a pair so that the notches 52 are alternately arranged in the circumferential direction.
[0029]
Reference numeral 60 denotes a laminated core member formed by laminating the annular plate members 61 to form a cylindrical shape. Pin-shaped magnetic poles are provided on the outer peripheral portion at positions corresponding to the center of the notch 52 of the pole core member 59 and the through hole 53, respectively. A plurality of through-holes 62 through which the through-holes 57 can be formed are formed, and a plurality of substantially rectangular cross-sections penetrate from one end side to the other end side of each through-hole 62 while leaving a thin portion 63 on the outer peripheral side. Are formed, and a plurality of salient pole portions 65 are formed in the circumferential direction by being partitioned by these through holes 64.
[0030]
66 is a plurality of permanent magnets fitted through the through holes 64, 67 is a field coil fitted to the boss portions 54 of both pole core members 59 and mounted inside the laminated core member 60, 68 is A substantially trapezoidal non-magnetic member made of, for example, non-magnetic steel or the like, having a fitting hole 69 formed in the center portion thereof for fitting into the notch 52 of each of the pole core members 59 and receiving the tip of the pin-shaped magnetic pole 57. It is.
[0031]
Then, as shown in FIG. 10, after inserting the field coil 67 inside the laminated core member 60 in advance, the pin-shaped magnetic poles 57 are respectively passed through the through holes 53 from both sides of the laminated core member 60, The two pole core members 59 in which the non-magnetic members 68 are fitted into the respective notches 52 are moved toward each other, and the tips of the pin-shaped magnetic poles 57 are fitted into the fitting holes 69 of the non-magnetic member 68 on the other side. At the same time, the ends of both bosses 54 are butted against each other. Then, the respective pin-shaped magnetic poles 57 of both pole core members 59 are engaged with each other in the laminated core member 60, and the field coil 67 is mounted between both the boss portions 54 and the inner peripheral surface of the laminated core member 60. You. Finally, after fixing between the pin-shaped magnetic poles 57 and the non-magnetic member 68 by, for example, welding, bonding, or the like, the rotor shaft 55 is passed through the through holes 56 of the boss portions 54 and fixed. Completes the rotor. In FIG. 9, the pin-shaped magnetic pole 57 on the base 51 located above is omitted.
[0032]
As described above, according to the second embodiment, each of the pin-shaped magnetic poles 57 of the pole core member 59 is held by each of the salient pole portions 65 of the laminated core member 60, and the tip thereof is formed of the non-magnetic pole core member 59 of the mating pole core member 59. Since it is fitted into the fitting hole 69 of the member 68 and held at the base 51 side to form a support structure at both ends, even if a large centrifugal force is exerted by high-speed rotation operation, it is possible to prevent deformation, so that the stator (Not shown), there is no need to provide a margin, and the gap can be minimized, so that it is possible to withstand high-speed rotation and improve output.
[0033]
Embodiment 3 FIG.
FIG. 15 is a partial detailed view showing a configuration of a main part of a rotor of a rotary electric machine according to Embodiment 3 of the present invention.
In the figure, the same parts as those in the second embodiment are denoted by the same reference numerals, and the description is omitted. Reference numeral 70 denotes a through hole into which the salient pole portion 65 is partitioned and into which the permanent magnet 66 penetrates and is fitted. A step portion 72 is formed on the inner surface on the side where the thin portion 71 is left. Only the thickness of the thin portion 71 is increased.
[0034]
As described above, according to the third embodiment, the step portion 72 is formed on the inner surface of the through hole 70 in which the permanent magnet 66 is fitted, except for the thin portion 71, and the step portion 72 forms the permanent magnet 66. Since the end face is supported, the centrifugal force can be received by the thick step portion 72 without imposing a load on the thin portion 71, so that it is possible to withstand high-speed rotation. Although not described in each of the first and second embodiments, the durability can be improved even when each thin portion is hardened by, for example, welding or cold forging.
[0035]
【The invention's effect】
As described above, according to the first aspect of the present invention, the annular plate members are laminated and formed into a cylindrical shape, and a thin portion is left on the outer peripheral portion from the one end to the other end of the cylinder on the outer peripheral portion. A laminated core member formed by dividing a plurality of salient pole portions in the circumferential direction by a penetrating through-hole, a field coil mounted inside the laminated core member, a disc-shaped base and an outer peripheral portion of the base. It consists of a plurality of claw-shaped magnetic poles formed at a predetermined pitch in the circumferential direction, sandwiches both ends of the laminated core member by the base, and each claw-shaped magnetic pole alternately pivots each salient pole portion of the laminated core member. And a pair of pole core members fixed to the base on the side opposite to the tip of each claw-shaped magnetic pole via a non-magnetic member, so that it can withstand high-speed rotation and improve output. A rotor for a rotating electric machine can be provided.
[0036]
According to the second aspect of the present invention, the annular plate members are laminated to form a cylindrical shape, and the outer peripheral portion penetrates from the one end side to the other end side of the cylinder leaving a thin portion on the outer peripheral side. A laminated core member formed by dividing a plurality of salient pole portions in the circumferential direction by the hole, a field coil mounted inside the laminated core member, and a disk-shaped base and one end side near the outer periphery of the base It consists of a plurality of pin-shaped magnetic poles fixed at a predetermined pitch in the circumferential direction, sandwiches both ends of the laminated core member by the base, and each pin-shaped magnetic pole alternately pivots each salient pole portion of the laminated core member. And a pair of pole core members fixed to the base on the side opposite to the other end of each pin-shaped magnetic pole via a non-magnetic member, so that it can withstand high-speed rotation and improve output. A rotor for a rotating electric machine can be provided.
[0037]
According to a third aspect of the present invention, in the first or second aspect, the nonmagnetic member is embedded in the base of the pole core member, and the other end of the claw-shaped magnetic pole or the pin-shaped magnetic pole can be fitted therein. Therefore, it is possible to provide a rotor of a rotating electric machine that can suppress magnetic loss with a simple configuration and improve mechanical strength.
[0038]
According to the fourth aspect of the present invention, according to the first or second aspect, the through-hole for defining the salient pole portion is formed in a substantially rectangular cross section, and the permanent magnet is inserted therein, so that the cost is reduced. Thus, it is possible to provide a rotor of a rotating electric machine capable of reducing the number of rotations.
[0039]
According to a fifth aspect of the present invention, in the fourth aspect, the through hole into which the permanent magnet is inserted is formed such that the elongate direction has a predetermined angle with respect to the radiation extending from the center of the laminated core member. Since it is formed so as to face, it is possible to provide a rotor of a rotating electric machine that can withstand high-speed rotation as well as cost reduction.
[0040]
According to a sixth aspect of the present invention, in the fifth aspect, since some of the through holes are formed so that adjacent ones approach each other on the outer peripheral side, a rotation that can further endure high-speed rotation. An electric motor rotor can be provided.
[0041]
According to the seventh aspect of the present invention, in the fifth or sixth aspect, the step portion is formed on the inner surface of the through-hole located on the outer peripheral side of the laminated core member. It is possible to provide a possible rotor of a rotating electric machine.
[0042]
According to the eighth aspect of the present invention, since the resin is buried in the side of the permanent magnet in the fifth or sixth aspect, a rotor of a rotating electric machine that can withstand high-speed rotation is provided. can do.
[0043]
According to a ninth aspect of the present invention, in the first or second aspect, the thin portion of the laminated core member is subjected to the hardening treatment, so that the rotor of the rotating electric machine which can withstand high-speed rotation is provided. can do.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of a rotor of a rotary electric machine according to Embodiment 1 of the present invention.
FIG. 2 is a front view of the rotor of the rotary electric machine in FIG. 1 as viewed from one axial end.
FIG. 3 is a front view of the rotor of the rotary electric machine in FIG. 1 as viewed from the other axial side.
FIG. 4 is a sectional view showing a section taken along line IV-IV in FIG. 1;
FIG. 5 is a sectional view showing a section taken along line VV in FIG. 1;
FIG. 6 is a sectional view showing a section taken along line VI-VI in FIG. 1;
FIG. 7 is a sectional view showing a section taken along line VII-VII in FIG. 1;
FIG. 8 is a perspective view showing a configuration of a rotor of a rotary electric machine according to Embodiment 2 of the present invention.
9 is an exploded perspective view showing a configuration of a rotor of the rotary electric machine in FIG. 8;
10 is a cross-sectional view illustrating a configuration of a rotor of the rotary electric machine in FIG.
FIG. 11 is a sectional view showing a section taken along line XI-XI in FIG. 10;
FIG. 12 is a sectional view showing a section taken along line XII-XII in FIG. 10;
FIG. 13 is a sectional view showing a section taken along line XIII-XIII in FIG. 10;
FIG. 14 is a sectional view showing a section taken along line XIV-XIV in FIG. 10;
FIG. 15 is a partial detailed view showing a configuration of a main part of a rotor of a rotary electric machine according to Embodiment 3 of the present invention.
FIG. 16 is a perspective view showing a configuration of a rotor of a conventional rotary electric machine.
FIG. 17 is a cross-sectional view illustrating a configuration of a rotor of a rotary electric machine according to the related art.
FIG. 18 is a sectional view showing a section taken along line XVIII-XVIII in FIG. 17;
FIG. 19 is a sectional view showing a section taken along line XIX-XIX in FIG. 17;
FIG. 20 is a perspective view showing a configuration of a pole core member in FIG. 17;
[Explanation of symbols]
31, 59 pole core member, 32, 52 cutout, 33, 51 base,
34 claw-shaped magnetic poles, 36, 55 rotor shafts, 38, 60 laminated core members,
40, 63, 71 Thin portion, 41, 64, 70 Through hole, 42, 65 Salient pole portion,
44, 66 permanent magnet, 45, 67 field coil, 46, 68 non-magnetic member,
47, 69 fitting holes, 57 pin-shaped magnetic poles, 72 steps.

Claims

A plurality of salient pole portions are formed in the circumferential direction by a through-hole that is formed by laminating annular plate members and is formed in a cylindrical shape, and through an outer peripheral portion of the cylinder from one end side to the other end side, leaving a thin portion on the outer peripheral side, leaving a thin portion. Are formed by partitioning, a field coil mounted inside the laminated core member, and a disc-shaped base and an outer peripheral portion of the base formed at a predetermined pitch in a circumferential direction. A plurality of claw-shaped magnetic poles, both ends of the laminated core member being sandwiched by the base, and the claw-shaped magnetic poles alternately penetrate the salient pole portions of the laminated core member in the axial direction, respectively; A pair of pole core members fixed to the base on the side opposite to the tip end of the magnetic pole via a non-magnetic member, respectively.

A plurality of salient pole portions are formed in the circumferential direction by a through-hole that is formed by laminating annular plate members and is formed in a cylindrical shape, and through an outer peripheral portion of the cylinder from one end side to the other end side, leaving a thin portion on the outer peripheral side, leaving a thin portion. Are laminated and formed, a field coil mounted on the inside of the laminated core member, and a disc-shaped base and one end side are arranged at a predetermined pitch in a circumferential direction near an outer peripheral portion of the base. Consisting of a plurality of pin-shaped magnetic poles to be fixed, both ends of the laminated core member are sandwiched by the base, and the pin-shaped magnetic poles alternately penetrate the salient pole portions of the laminated core member in the axial direction, respectively. A rotor for a rotating electric machine, comprising: a pair of pole core members fixed to the base at the other end of each of the pin-shaped magnetic poles via a non-magnetic member.

3. The non-magnetic member according to claim 1, wherein the non-magnetic member is embedded in a base of the pole core member and has a fitting hole into which the other end of the claw-shaped magnetic pole or the pin-shaped magnetic pole can be fitted. Rotor of rotating electric machine.

The rotor of a rotary electric machine according to claim 1, wherein the through hole defining the salient pole portion is formed in a substantially rectangular cross section, and a permanent magnet is inserted therein.

5. The through-hole in which the permanent magnet is inserted is formed such that its long direction faces a direction having a predetermined angle with respect to radiation extending from the center of the laminated core member. The rotor of the rotating electric machine according to the above description.

The rotor of a rotary electric machine according to claim 5, wherein a part of the through hole is formed such that adjacent ones approach each other on an outer peripheral side.

The rotor of a rotary electric machine according to claim 5, wherein a step portion is formed on an inner surface of the through hole located on an outer peripheral side of the laminated core member.

The rotor of a rotating electric machine according to claim 5, wherein a resin is buried beside the permanent magnet.

The rotor of a rotating electric machine according to claim 1, wherein a thin portion of the laminated core member is subjected to a hardening treatment.