JP3923871B2

JP3923871B2 - Motor stator, mold motor, blower and air conditioner

Info

Publication number: JP3923871B2
Application number: JP2002251783A
Authority: JP
Inventors: 峰雄山本; 和広中根; 博幸石井; 東吾山崎; 豊史野村; 展明三宅; 広高間
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2002-08-29
Filing date: 2002-08-29
Publication date: 2007-06-06
Anticipated expiration: 2022-08-29
Also published as: JP2004096838A

Description

【０００１】
【発明の属する技術分野】
この発明は電動機の固定子に関するもので、詳しくはティースが平行に配され、バックヨークが薄肉で連結されて打抜かれる電動機の固定子鉄心に設けられる絶縁部の構造と、ティースにマグネットワイヤーが巻き回されて形成されるコイルのマグネットワイヤー端末とコイル間を結ぶ渡り線の処理方法に関するものである。
【０００２】
【従来の技術】
図１０は、例えば特開２０００−２２４７９１号公報に示された従来の電動機の固定子を示す図である。図に示すように、従来の電動機の固定子では、マグネットワイヤー端末と結線される端子２を設けた結線側絶縁部１９と反結線側絶縁部６に、コイル１間の渡り線５の一部、またはマグネットワイヤー端末の処理の一部を備え、固定子鉄心１０の両側の絶縁部とも使用していた。
【０００３】
【発明が解決しようとする課題】
従来の電動機の固定子は以上のように構成され、ティース１３が平行に配され、コアバックが薄肉で連結されて打抜かれる電動機の固定子鉄心に設けた絶縁部に巻線を施す電動機の固定子において、各相のコイル１間を切断することなく渡り線５で連続させてコイル１を形成するとき、反結線側絶縁部６まで渡り線５、またはマグネットワイヤー端末を引回して処理していたため、製造上の工程が増えて引き回すため時間の増大、また反結線側のスペースの確保が出来ないという問題点があった。
【０００４】
この発明は上記のような問題点を解決するためになされたもので、同相コイルの間に異相のコイルが形成される電動機の固定子のコイルの端末処理、渡り線の処理の全てを結線側絶縁部にて行うことにより、生産性、品質の向上を図ることを目的とする。
【０００５】
【課題を解決するための手段】
この発明に係る電動機の固定子は、ティースが平行に配され、コアバックが薄肉で連結されて打ち抜かれる固定子鉄心に絶縁部が施され、ティースに施された絶縁部にマグネットワイヤーが巻回されることによりコイルが形成され、同相コイルの間に異相のコイルが形成される電動機の固定子において、コイル間の渡り線が、端子が設けられる固定子鉄心外径側の絶縁部で、固定子鉄心端面より軸方向外側の絶縁部である結線側絶縁部の外周を引き回され、各相の渡り線の結線側絶縁部の外周への入口と出口の高さがほぼ同一で、各相の渡り線が接触することなく軸方向に配列されることを特徴とする。
【０００６】
また、この発明に係る電動機の固定子は、同相のコイル間にある異相の固定子外径側絶縁部に渡り線巻き付けピンを備えたことを特徴とする。
【０００７】
また、この発明に係る電動機の固定子は、同相のコイル間にある隣り合う異相の固定子外径側絶縁部に設けた渡り線巻き付けピンに渡り線を巻き付けることを特徴とする。
【０００８】
また、この発明に係る電動機の固定子は、結線側絶縁部の外周部、及び渡り線巻き付けピンの外周部の少なくとも何れか一方に電動機の相数と同じ数の凹部を設け、渡り線を凹部に収納することを特徴とする。
【０００９】
また、この発明に係る電動機の固定子は、結線側絶縁部の外周部、及び渡り線巻き付けピンの外周部の少なくとも何れか一方のそれぞれに、それぞれの渡り線の本数と同じ数の凹部をそれぞれに設け、渡り線を凹部に収納することを特徴とする。
【００１０】
また、この発明に係る電動機の固定子は、固定子鉄心端面側から順に各相の渡り線が複数列に配置され、最初の相の渡り線の結線側絶縁部の外周への出口は渡り線巻き付けピンの横の切欠きとし、他の相の渡り線の結線側絶縁部の外周への出口は、渡り線巻き付けピンの横の切欠きとの間に出口渡り線引っ掛けピンを挟んで設けたことを特徴とする。
【００１１】
また、この発明に係る電動機の固定子は、絶縁部に、モールド時にモールド金型の押さえ箇所となる固定子外周に張り出して軸方向に形成されたモールド金型押さえ部を形成したことを特徴とする。
【００１２】
また、この発明に係る電動機の固定子は、絶縁部を固定子鉄心に樹脂成形にて形成したことを特徴とする。
【００１３】
この発明に係るモールド電動機は、請求項１〜８の何れかに記載の電動機の固定子を用いたことを特徴とする。
【００１４】
この発明に係る送風機は、請求項９に記載のモールド電動機を用いたことを特徴とする。
【００１５】
この発明に係る空気調和機は、請求項１０に記載の送風機を搭載したことを特徴とする。
【００１６】
この発明に係る電動機の固定子の製造方法は、請求項１〜８の何れかに記載の電動機の固定子の製造方法であって、絶縁部が施された固定子鉄心を製品とは逆の方向に環状に曲げてから、巻線を施すことを特徴とする。
【００１７】
また、この発明に係る電動機の固定子の製造方法は、請求項７に記載の電動機の固定子の製造方法であって、固定子のモールド時に、絶縁部のモールド金型押さえ部と反結線側のコア端面をモールド金型の押さえ箇所とすることを特徴とする。
【００１８】
また、この発明に係る電動機の固定子の製造方法は、請求項７に記載の電動機の固定子の製造方法であって、固定子のモールド時に、絶縁部のモールド金型押さえ部の両側をモールド金型の押さえ箇所とすることを特徴とする。
【００１９】
【発明の実施の形態】
以下、この発明の実施の形態を図面に基づいて説明する。
実施の形態１．
図１〜５は実施の形態１を示す図で、図１は電動機の固定子の構成を示す斜視図、図２は電動機の固定子鉄心をを示す図、図３は絶縁部を施した固定子鉄心を示す図、図４はマグネットワイヤーの引き回しを示す図、図５は各相の外径から見た結線側絶縁部の詳細を示す図である。
【００２０】
図１に示す電動機の固定子は３相、１２スロット８極のものである。その構成を以下説明するが、符号の説明には、図１にはなく図２以降で使用する符号も用いる。
図１において、１は固定子鉄心１０の各ティース１３にマグネットワイヤー２３を巻線することにより形成されるコイル、２は各相の巻始めマグネットワイヤーの端末と各相の巻終りマグネットワイヤーの端末が接合される端子、３は端子に設けられたフック、４は結線側絶縁部１９に設けた渡り線巻付けピン、５は各相のコイル間を繋ぐ渡り線、６は端子２が挿入される側とは反対のコア端面１２より外側のコア外径側の絶縁部である反結線側絶縁部、７は固定子鉄心１０のコア合せ面、８はコア合せ面７の溶接部、９は絶縁部のモールド金型押え部、１０は固定子鉄心、１１は中性点結線部品である。
【００２１】
本発明による電動機の固定子は、図１に示すような外観であり、同相コイルの間に異相のコイル１が形成される電動機の固定子のコイルの端末処理、渡り線５の処理の全てを結線側絶縁部１９にて行うものである。そして、詳細は後述するが、渡り線５は、結線側絶縁部１９の外周部に沿って引き回され、各相の渡り線５は軸方向に接触しない形で３段に配置され、しかも相毎の渡り線５の結線側絶縁部１９の外周部からの入口、結線側絶縁部１９の外周部への出口の高さがほぼ同一となっている。さらに、同相のコイル間にある異相、特に隣り合う異相のコイルが形成される結線側絶縁部１９に設けた渡り線巻付けピン４に渡り線５が巻付けられる。
【００２２】
図２以下は、図１に示す電動機の固定子が完成するまでの順を説明するための図である。
先ず基本となる電動機の固定子鉄心１０は、ティース１３が平行に配され、コアバック１５が薄肉で連結されて打ち抜かれたものを積層して組立られる。図２はその電動機の固定子鉄心１０を示すが、図において、７は固定子鉄心１０のコア合せ面、１２は軸方向のコア端面、１３はティース、１４はティース先端、１５はコアバック、１６はコアバック１５を薄肉で連結する薄肉連結部、１７は固定子内径側、１８は固定子外径側を示す。
【００２３】
次に図２のように組立られた固定子鉄心１０に、樹脂の一体成形、または部品の組付けにより絶縁部を施す。図３はその絶縁部が施された固定子鉄心を示すが、図において、６は端子２が挿入される側とは反対のコア端面１２より外側のコア外径側の絶縁部である反結線側絶縁部、１９は端子２が挿入されるコア外径側の絶縁部で、コア端面１２より外側の絶縁部である結線側絶縁部、２０は端子２が挿入される端子挿入穴、２１は巻始めからげピン、２２は巻終りからげピンである。
【００２４】
絶縁部が施された固定子鉄心１０にマグネットワイヤー２３を巻回し、引回して各相のコイルを形成する。図４は各相のマグネットワイヤー２３の引回しを示す図であるが、詳細は後述する。
【００２５】
図５は各相のコア外径側から見た端子２を備えない結線側絶縁部の詳細を示す図で、２４は渡り線巻付けピン４のコア外径側に設けられた３個の山形状、２５は渡り線５がコア外径側に出る渡り線出口、２６は渡り線入口、２７は出口渡り線引っ掛けピン、２８は入口渡り線引っ掛けピン、２９は溝形状、３０は渡り線巻付け用切り欠きを示す。
【００２６】
次に動作を説明する。図２に示す通りティース１３が平行に配され、コアバック１５が薄肉で連結された固定子鉄心１０が打ち抜かれ積層された後、図３に示すように固定子鉄心１０に直接樹脂成形、または部品の組付けによりそれぞれのティース１３、ティース１３先端、コアバック１５に絶縁部が形成される。
【００２７】
各相の巻始めマグネットワイヤーの端末と各相の巻終りマグネットワイヤーの端末が接合される端子２を、固定子外径側１８の結線側絶縁部１９に設けた端子挿入穴２０に挿入し固定する。この時、端子２が挿入されるコア外径側の絶縁部で、コア端面１２より外側の絶縁部を結線側絶縁部１９と呼び、端子２が挿入される側とは反対のコア端面１２より外側のコア外径側の絶縁部を反結線側絶縁部６と呼ぶ。
【００２８】
絶縁部が施されたティース１３にマグネットワイヤー２３が引き回されてコイル１が形成されるが、コイル形成の手順は図４に示す通り、渡り線５がコア端面１２に最も近い相のコイルから順に形成される。
最初に形成される相のマグネットワイヤー端末がコア外径側の結線側絶縁部１９に設けた巻始めからげピン２１に数ターン巻付けられた後、マグネットワイヤー２３は端子２のフック３に掛けられて絶縁部が施されられたティース１３に巻付けられてコイルが形成される。
【００２９】
最初のコイルが形成された後、マグネットワイヤー２３は渡り線出口２５より固定子外径側１８の結線側絶縁部１９より外周に出て、渡り線５が引き回される方向の隣にある異相のコイルが形成される固定子外径側１８の結線側絶縁部１９に設けた渡り線巻付けピン４に渡り線５を巻付けて、図５に示す渡り線入口２６を通り、入口渡り線引っ掛ピン２８に掛けられてティース１３まで引き回され、絶縁部が施されたティース１３に巻回されることにより、次のコイルが形成される。
【００３０】
ここで、図５に示す通り、渡り線出口２５と渡り線入口２６のコア端面１２からの軸方向の距離を同一にすることにより、渡り線５の位置を所定の位置に留めている。さらに、渡り線巻付けピン４に山形状２４、また、固定子外径側１８の結線側絶縁部１９の外周に溝形状２９を設け、渡り線５をそれぞれに出来る凹部となる窪みに収めることにより、渡り線５の位置ずれを防止し、別相の渡り線５との距離の確保を可能としている。
【００３１】
最初に形成される相の続くコイルも同様に形成され、同相の最後となるコイルが形成された後に、マグネットワイヤー２３は固定子外径側１８の結線側絶縁部１９に設けた端子２のフック３に掛けてから巻終りからげピン２２に数ターン巻付けて、１つの相が完成する。
【００３２】
以上の説明では、巻始めからげピン２１、巻終りからげピン２２を用いることを示したが、例えば、フック３にマグネットワイヤー２３を引っ掛けた後にフック３をつぶすことで、フック３内にマグネットワイヤー２３を固定して、それぞれの端末からげピンを省略してもよい。
【００３３】
また、渡り線巻付けピン４の山形状２４と、結線側絶縁部１９の外周に溝形状２９の両方を設けたものを示したが、どちらか片方だけでもよい。
【００３４】
尚、２相目、３相目も１相目と同様にマグネットワイヤー２３が引き回されるが、図５に示す通り、渡り線巻付けピン４の横を渡り線巻付け用切欠き３０とし、出口渡り線引っ掛けピン２７を挟んで渡り線出口２５を設けることで、別相の渡り線５の渡り線巻付けピン４への巻付けを可能とし、出口渡り線引っ掛けピン２７があることで渡り線５が渡り線巻付け用切欠き３０へのずれ落ちを防止し、渡り線５の入口、出口の高さを各相で変えることが出来、各相の渡り線５の接触を避けることを可能としている。
【００３５】
このようにして固定子のコイルが形成されるが、マグネットワイヤー２３の全ての端末、全ての渡り線５を結線側の絶縁部で処理することで、反結線側へのマグネットワイヤー２３の引き回しが行われないことによる生産性の向上と、工程の低減による品質の向上と、それに伴うコストの低減が図れることを特徴としている。
【００３６】
上記の説明では、渡り線５の渡り線巻付けピン４への巻付けについて、渡り線５が引き回される方向に隣り合う異相のコイルの結線側絶縁部１９に設けた渡り線巻付けピン４のみ行うことを示しているが、渡り線５の巻付け箇所を増加させてもよい。また、渡り線５の巻付けは２番目の異相のコイルの結線側絶縁部１９に設けた渡り線巻付けピン４にしてもよい。
【００３７】
このようにして３相とも巻線が施されコイルの形成が終了した後、固定子鉄心１０の薄肉連結部１６を関節として、所定の固定子となる方向に正曲げして、固定子鉄心１０の両側にあるコア合せ面７同士を合わせ、溶接を施して固定する。
【００３８】
また、マグネットワイヤー２３の端末と端子２との接合は、ヒュージング、半田、ろう付け等を施すことによる。
【００３９】
最後に、中性点の形成については、巻終りからげピン２２の高さを各相で同一にし、中性点結線部品をその端面にのせた時、端子２との結合箇所の軸方向に位置決めされ、それぞれの結合箇所をスポット溶接、半田、ろう付け等を施すことで電動機の固定子が完成する。
【００４０】
上記の説明では、各相の巻終りの端末と結線される端子２を中性点の形成に使用すること、かつ、中性点結線部品１１を使用すること示したが、巻始めの端子２を中性点に使用、または、中性点結線部品１１を使用しないで、マグネットワイヤー２３の端末を利用して中性点を形成してもよい。
【００４１】
また、固定子の外側に回転子があるアウターロータの構造を持つ電動機の固定子にも、本発明は適用可能である。
【００４２】
このように、本発明の電動機の固定子は、生産性の向上とそれに伴う品質の向上とコストの低減を図れるとともに、反結線側絶縁部６を端末処理と渡り線５の処理に使用しないことから、電動機の機能の向上、または、その他の目的に使用することが可能となっている。
【００４３】
上述の実施の形態では、３相の電動機の固定子を用いて説明したが、２相の電動機の固定子にも、本発明は適用可能である。
【００４４】
実施の形態２．
図６、７は実施の形態２を示す図で、図６は逆に曲げられた電動機の固定子を示す図、図７は電動機の固定子の製造フローを示す図である。
上記実施の形態で、図６で示す通りに固定子鉄心１０を所定とは逆に曲げて巻線を施すもので、このようにすることにより絶縁部が施されたティース１３にマグネットワイヤー２３を巻き回す際、巻線機のマグネットワイヤー２３を案内するノズルが入り込むスペースを十分に確保でき、生産性が向上し、それに伴って品質の向上が図れる。
【００４５】
次に電動機の固定子の製作手順を説明する。図７に示すように、先ず、ティース１３が平行に配され、コアバック１５が薄肉で連結されて打ち抜かれたものを積層して固定子鉄心１０を組み立てる。
【００４６】
次に、固定子鉄心１０に直接樹脂成形、または部品の組付けによりそれぞれのティース１３、ティース１３先端、コアバック１５に絶縁部が形成される。
【００４７】
形成された絶縁部に端子２を挿入する。各相の巻始めマグネットワイヤーの端末と各相の巻終りマグネットワイヤーの端末が接合される端子２を、固定子外径側１８の結線側絶縁部１９に設けた端子挿入穴２０に挿入し固定する。
【００４８】
そして、本実施の形態の特徴点である、図６で示す通り固定子を所定とは逆に曲げる。
【００４９】
１相目の巻線を施すが、絶縁部が施されたティース１３にマグネットワイヤー２３を巻き回す際、巻線機のマグネットワイヤー２３を案内するノズルが入り込むスペースを十分に確保できる。
【００５０】
１相目の巻線を施す際、コイルが形成された後、マグネットワイヤー２３は渡り線出口２５より固定子外径側１８の結線側絶縁部１９より外周に出て、渡り線５が引き回される方向の隣にある異相のコイルが形成される固定子外径側１８の結線側絶縁部１９に設けた渡り線巻付けピン４に渡り線５を巻付けるので、固定子を所定とは逆に曲げても、渡り線５のたるみが発生しない。
【００５１】
２相目、３相目も同様に巻線が施されて完成後、固定子を正曲げして、固定子鉄心１０のコア合せ面７を溶接し、端子とコイル端末の接合を行い、最後に中性点結線部品１１を取り付けて固定子が完成する。
【００５２】
上述の実施の形態によれば、固定子鉄心１０を所定とは逆に曲げて巻線を施すことにより、絶縁部が施されたティース１３にマグネットワイヤー２３を巻き回す際、巻線機のマグネットワイヤー２３を案内するノズルが入り込むスペースを十分に確保でき、生産性が向上し、それに伴って品質の向上が図れる。
【００５３】
また、コイルが形成された後、マグネットワイヤー２３は渡り線出口２５より固定子外径側１８の結線側絶縁部１９より外周に出て、渡り線５が引き回される方向の隣にある異相のコイルが形成される固定子外径側１８の結線側絶縁部１９に設けた渡り線巻付けピン４に渡り線５を巻付けるので、固定子を所定とは逆に曲げても、渡り線５のたるみが発生しない。
【００５４】
実施の形態３．
図８は実施の形態３を示す図で、電動機の固定子をモールドしたモールド電動機を示す図である。図において、３１はモールド金型の押え箇所、３２はモールド部である。
本発明の電動機の固定子にモールドを施すモールド電動機において、コアバック１５の巾が小さい場合、絶縁部が施された時、固定子外径側１８の絶縁部の外郭と固定子の外径との距離が小さくなり、固定子のモールド時にコア端面１２を金型が押えること出来ない場合がある。
【００５５】
そこで、図１に示すように、絶縁部の形成時に絶縁部のモールド金型押え部９を合わせて形成し、固定子のモールド時には図８に示す通り、絶縁部のモールド金型押え部９と反結線側のコア端面１２をモールド金型の押え箇所３１とすることで対応を可能としたものである。
【００５６】
尚、本実施の形態では、モールド金型の押え箇所３１を絶縁部のモールド金型押え部９と反結線側のコア端面１２としているが、例えば、絶縁部のモールド金型押え部９を両側から、または、コア端面１２同士を挟持する等、その他の方法によりモールドを行ってもよい。
【００５７】
本発明の電動機の固定子は、コアバック１５の巾が小さい場合、絶縁部が施された時、固定子外径側１８の絶縁部の外郭と固定子の外径との距離が小さくなり、固定子のモールド時にコア端面１２を金型が押えること出来ない場合があるが、絶縁部の形成時に絶縁部のモールド金型押え部９を合わせて形成し、固定子のモールド時には、絶縁部のモールド金型押え部９と反結線側のコア端面１２をモールド金型の押え箇所３１とすることで対応可能となる。
【００５８】
本発明の電動機の固定子は、モールドで外郭を形成するものに限定されない。
【００５９】
実施の形態４．
図９は実施の形態４を示す図で、空気調和機の構成を示す図である。図において、３３は空気調和機の室内機、３４は空気調和機の室外機、３５は送風機である。
【００６０】
空気調和機の室内機３３は、空気調和機の室外機３４に接続され、実施の形態３で示した電動機で駆動される送風機を有している。生産性、品質が良い電動機を空気調和機用の主要部品である送風機用電動機として用いることにより、生産性、品質の良い空気調和機が得られる。
【００６１】
【発明の効果】
この発明に係る電動機の固定子は、コイル間の渡り線が、端子が設けられる固定子鉄心外径側の絶縁部で、固定子鉄心端面より軸方向外側の絶縁部である結線側絶縁部の外周を引き回され、各相の渡り線の結線側絶縁部の外周への入口と出口の高さがほぼ同一で、各相の渡り線が接触することなく軸方向に配列されることにより、反結線側へのマグネットワイヤーの引回しを行わないことにより、生産性の向上と品質の向上が図られる。また、各相の渡り線を位置決めすることにより、異相の渡り線の接触を防止することから、品質の向上が図られる。また、反結線側の絶縁部を電動機の他の機能に使用可能なことから、機能向上が図られる。
【００６２】
また、この発明に係る電動機の固定子は、同相のコイル間にある異相の固定子外径側絶縁部に渡り線巻き付けピンを備えたことにより、コイル間の渡り線のたるみを防止できる。
【００６３】
また、この発明に係る電動機の固定子は、同相のコイル間にある隣り合う異相の固定子外径側絶縁部に設けた渡り線巻き付けピンに渡り線を巻き付けることにより、より確実にコイル間の渡り線のたるみを防止できる。
【００６４】
また、この発明に係る電動機の固定子は、結線側絶縁部の外周部、及び渡り線巻き付けピンの外周部の少なくとも何れか一方に電動機の相数と同じ数の凹部を設け、渡り線を凹部に収納することにより、各相の渡り線の接触を防止できる。
【００６５】
また、この発明に係る電動機の固定子は、結線側絶縁部の外周部、及び渡り線巻き付けピンの外周部の少なくとも何れか一方のそれぞれに、それぞれの渡り線の本数と同じ数の凹部をそれぞれに設け、渡り線を凹部に収納することにより、必要な凹部だけを形成すればよいので、生産性が向上する。
【００６６】
また、この発明に係る電動機の固定子は、固定子鉄心端面側から順に各相の渡り線が複数列に配置され、最初の相の渡り線の結線側絶縁部の外周への出口は渡り線巻き付けピンの横の切欠きとし、他の相の渡り線の結線側絶縁部の外周への出口は、渡り線巻き付けピンの横の切欠きとの間に出口渡り線引っ掛けピンを挟んで設けたことにより、出口渡り線引っ掛けピンがあることで渡り線が渡り線巻付け用の切欠きへのずれ落ちを防止し、渡り線の入口、出口の高さを各相で変えることが出来、各相の渡り線の接触を避けることができる。
【００６７】
また、この発明に係る電動機の固定子は、絶縁部に、モールド時にモールド金型の押さえ箇所となる固定子外周に張り出して軸方向に形成されたモールド金型押さえ部を形成したことにより、コアバックの巾が小さく、絶縁部が施された時、固定子外径側の絶縁部の外郭と固定子の外径との距離が小さくなり、固定子のモールド時にコア端面を金型が押えること出来ない場合でも、モールド金型押さえ部によりモールドを可能とする。
【００６８】
また、この発明に係る電動機の固定子は、絶縁部を固定子鉄心に樹脂成形にて形成したことにより、複雑な形状の絶縁部でも容易に形成できる。
【００６９】
この発明に係るモールド電動機は、請求項１〜８の何れかに記載の電動機の固定子を用いたことにより、生産性が向上し、品質の良いモールド電動機が得られる。
【００７０】
この発明に係る送風機は、請求項８に記載のモールド電動機を用いたことにより、生産性、品質の良い送風機が得られる。
【００７１】
この発明に係る空気調和機は、請求項９に記載の送風機を搭載したことにより、品質の高い空気調和機が得られる。
【００７２】
この発明に係る電動機の固定子の製造方法は、請求項１〜７の何れかに記載の電動機の固定子の製造方法であって、絶縁部が施された固定子鉄心を製品とは逆の方向に環状に曲げてから巻線を施すことにより、巻線機のマグネットワイヤーを案内するノズルが入り込むスペースを十分に確保でき、生産性が向上する。
【００７３】
また、この発明に係る電動機の固定子の製造方法は、請求項７に記載の電動機の固定子の製造方法であって、固定子のモールド時に、絶縁部のモールド金型押さえ部と反結線側のコア端面をモールド金型の押さえ箇所とすることにより、コアバックの巾が小さく、絶縁部が施された時、固定子外径側の絶縁部の外郭と固定子の外径との距離が小さくなり、固定子のモールド時にコア端面を金型が押えること出来ない場合でも、モールド金型押さえ部によりモールドを可能とする。
【００７４】
また、この発明に係る電動機の固定子の製造方法は、請求項７に記載の電動機の固定子の製造方法であって、固定子のモールド時に、絶縁部のモールド金型押さえ部の両側をモールド金型の押さえ箇所とすることにより、コアバックの巾が小さく、絶縁部が施された時、固定子外径側の絶縁部の外郭と固定子の外径との距離が小さくなり、固定子のモールド時にコア端面を金型が押えること出来ない場合でも、モールド金型押さえ部によりモールドを可能とする。
【図面の簡単な説明】
【図１】実施の形態１を示す図で、電動機の固定子の構成を示す斜視図である。
【図２】実施の形態１を示す図で、固定子鉄心を示す図である。
【図３】実施の形態１を示す図で、絶縁部を施した固定子鉄心を示す図である。
【図４】実施の形態１を示す図で、マグネットワイヤーの引き回しを示す図である。
【図５】実施の形態１を示す図で、各相の外径から見た結線側絶縁部の詳細を示す図である。
【図６】実施の形態２を示す図で、逆に曲げた電動機の固定子を示す図である。
【図７】実施の形態２を示す図で、電動機の固定子の製造フローを示す図である。
【図８】実施の形態３を示す図で、モールド電動機を示す図である。
【図９】実施の形態３を示す図で、空気調和機を示す図である。
【図１０】従来の電動機の固定子を示す図である。
【符号の説明】
１コイル、２端子、３フック、４渡り線巻付けピン、５渡り線、６反結線側絶縁部、７コア合せ面、８溶接部、９絶縁部のモールド金型押え部、１０固定子鉄心、１１中性点結線部品、１２コア端面、１３ティース、１４ティース先端、１５コアバック、１６薄肉連結部、１７固定子内径側、１８固定子外径側、１９結線側絶縁部、２０端子挿入穴、２１巻始めからげピン、２２巻終りからげピン、２３マグネットワイヤー、２４山形状、２５渡り線出口、２６渡り線入口、２７出口渡り線引っ掛けピン、２８入口渡り線引っ掛ピン、２９溝形状、３０渡り線巻付け用切欠き、３１モールド金型の押え箇所、３２モールド部、３３空気調和機の室内機、３４空気調和機の室外機、３５送風機。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stator of an electric motor. Specifically, teeth are arranged in parallel, a back yoke is connected with a thin wall, and a structure of an insulating portion provided in a stator core of an electric motor is punched. The present invention relates to a method for processing a connecting wire connecting between a coil and a magnet wire terminal of a coil formed by winding.
[0002]
[Prior art]
FIG. 10 is a view showing a stator of a conventional electric motor disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-224791. As shown in the drawing, in the stator of the conventional electric motor, a part of the connecting wire 5 between the coils 1 is connected to the connection-side insulating portion 19 and the anti-connection-side insulating portion 6 provided with the terminal 2 connected to the magnet wire terminal. Alternatively, a part of the processing of the magnet wire terminal is provided, and the insulating portions on both sides of the stator core 10 are also used.
[0003]
[Problems to be solved by the invention]
A conventional stator of an electric motor is configured as described above, in which the teeth 13 are arranged in parallel, and the core back is thinly connected and punched by being punched out. In the stator, when the coil 1 is formed by continuing the connecting wire 5 without cutting between the coils 1 of each phase, the connecting wire 5 or the magnet wire terminal is routed to the anti-connection side insulating portion 6 and processed. Therefore, there are problems in that the number of manufacturing steps is increased and routing is performed, so that the time is increased and the space on the anti-connection side cannot be secured.
[0004]
The present invention has been made to solve the above-described problems, and the terminal processing of the stator coil of the motor, in which the coils of the different phase are formed between the in-phase coils, and the crossover processing are all connected. The purpose is to improve productivity and quality by performing in the insulating part.
[0005]
[Means for Solving the Problems]
In the stator of the electric motor according to the present invention, the teeth are arranged in parallel, the core back is connected with a thin wall, and an insulating portion is provided on the stator iron core, and the magnet wire is wound around the insulating portion provided on the teeth. In the stator of an electric motor in which a coil is formed and a coil of a different phase is formed between in-phase coils, the connecting wire between the coils is fixed at the insulating portion on the outer side of the stator core where the terminal is provided. The outer circumference of the connection side insulation part, which is the insulation part outside the core end surface in the axial direction, is routed and the height of the inlet and outlet to the outer circumference of the connection side insulation part of each phase's connecting wire is almost the same. The crossover wires are arranged in the axial direction without contact.
[0006]
In addition, the stator of the electric motor according to the present invention is characterized in that a cross-phase winding pin is provided on the outer diameter side insulating portion of the different phase between the coils of the same phase.
[0007]
Moreover, the stator of the electric motor according to the present invention is characterized in that the jumper wire is wound around the jumper winding pin provided in the adjacent outer phase side insulating portion of the different phase between the coils of the same phase.
[0008]
In addition, the stator of the electric motor according to the present invention is provided with at least one of the outer peripheral portion of the connection-side insulating portion and the outer peripheral portion of the connecting wire winding pin with the same number of recesses as the number of phases of the electric motor, It is characterized by being housed in.
[0009]
Further, the stator of the electric motor according to the present invention is provided with at least one of the outer peripheral portion of the connection-side insulating portion and the outer peripheral portion of the connecting wire winding pin with the same number of recesses as the number of connecting wires, respectively. And the crossover is housed in the recess.
[0010]
Further, in the stator of the electric motor according to the present invention, the connecting wires of each phase are arranged in a plurality of rows in order from the stator core end surface side, and the outlet to the outer periphery of the connection side insulating portion of the first connecting wire is the connecting wire The exit to the outer periphery of the connection side insulation of the connecting wire of the other phase was provided with the exit connecting wire hook pin sandwiched between the notch next to the connecting wire winding pin. It is characterized by that.
[0011]
In addition, the stator of the electric motor according to the present invention is characterized in that a molding die pressing portion formed in the axial direction is formed on the insulating portion so as to project to the outer periphery of the stator that becomes a pressing portion of the molding die during molding. To do.
[0012]
Moreover, the stator of the electric motor according to the present invention is characterized in that the insulating portion is formed on the stator core by resin molding.
[0013]
The molded electric motor according to the present invention is characterized by using the stator of the electric motor according to any one of claims 1 to 8.
[0014]
The blower according to the present invention uses the molded electric motor according to claim 9.
[0015]
An air conditioner according to the present invention includes the blower according to claim 10.
[0016]
The method for manufacturing a stator for an electric motor according to the present invention is the method for manufacturing a stator for an electric motor according to any one of claims 1 to 8, wherein the stator core provided with an insulating portion is opposite to the product. It is characterized in that a winding is applied after bending in an annular shape in the direction.
[0017]
A method for manufacturing a stator for an electric motor according to the present invention is the method for manufacturing a stator for an electric motor according to claim 7, wherein when the stator is molded, the mold mold pressing portion of the insulating portion and the anti-connection side The core end face is used as a pressing part of the mold.
[0018]
The method for manufacturing a stator for an electric motor according to the present invention is the method for manufacturing a stator for an electric motor according to claim 7, wherein both sides of the mold mold pressing portion of the insulating portion are molded when the stator is molded. It is characterized by being a mold holding point.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 to 5 are diagrams showing the first embodiment, FIG. 1 is a perspective view showing a configuration of a stator of an electric motor, FIG. 2 is a diagram showing a stator core of the electric motor, and FIG. 3 is a fixing with an insulating portion. FIG. 4 is a diagram showing the core iron, FIG. 4 is a diagram showing the routing of the magnet wire, and FIG. 5 is a diagram showing the details of the connection-side insulating portion viewed from the outer diameter of each phase.
[0020]
The stator of the electric motor shown in FIG. 1 is a three-phase, 12-slot, 8-pole type. The configuration will be described below. In the description of the reference numerals, the reference numerals used in FIG.
In FIG. 1, reference numeral 1 denotes a coil formed by winding a magnet wire 23 around each tooth 13 of the stator core 10, and 2 denotes an end of each phase winding magnet wire and an end of each phase winding magnet wire. 3 is a hook provided on the terminal, 4 is a connecting wire winding pin provided on the connection side insulating portion 19, 5 is a connecting wire connecting the coils of each phase, and 6 is the terminal 2 inserted. 7 is a core mating surface of the stator core 10, 8 is a welded portion of the core mating surface 7, and 9 is a core mating surface 7. A mold holding part for the insulating part, 10 is a stator core, and 11 is a neutral point connection part.
[0021]
The stator of the electric motor according to the present invention has an appearance as shown in FIG. 1, and performs all of the terminal processing of the stator coil of the electric motor in which the different-phase coil 1 is formed between the in-phase coils and the processing of the crossover wire 5. This is performed by the connection-side insulating portion 19. As will be described in detail later, the connecting wire 5 is routed along the outer peripheral portion of the connection-side insulating portion 19, and the connecting wire 5 of each phase is arranged in three stages so as not to contact in the axial direction. The height of the inlet from the outer peripheral portion of the connection-side insulating portion 19 of each connecting wire 5 and the outlet to the outer peripheral portion of the connecting-side insulating portion 19 are substantially the same. Furthermore, the crossover wire 5 is wound around the crossover winding pin 4 provided in the connection side insulation part 19 in which the different phase between the coils of the same phase, especially the adjacent different phase coils are formed.
[0022]
FIG. 2 and subsequent figures are diagrams for explaining the order until the stator of the electric motor shown in FIG. 1 is completed.
First, the stator core 10 of the basic electric motor is assembled by laminating and punching the teeth 13 connected in parallel and the core back 15 connected with a thin wall. FIG. 2 shows the stator core 10 of the motor. In FIG. 2, 7 is a core mating surface of the stator core 10, 12 is an axial core end surface, 13 is a tooth, 14 is a tooth tip, 15 is a core back, Reference numeral 16 denotes a thin connecting portion for connecting the core back 15 with a thin wall, 17 denotes a stator inner diameter side, and 18 denotes a stator outer diameter side.
[0023]
Next, an insulating portion is applied to the stator core 10 assembled as shown in FIG. 2 by integral molding of resin or assembly of parts. FIG. 3 shows the stator core provided with the insulating portion. In FIG. 3, reference numeral 6 denotes an anti-connection line that is an insulating portion on the outer side of the core outside the core end surface 12 opposite to the side where the terminal 2 is inserted. Side insulation part 19 is an insulation part on the core outer diameter side where terminal 2 is inserted, connection side insulation part which is an insulation part outside core end surface 12, 20 is a terminal insertion hole where terminal 2 is inserted, and 21 is The winding start pin and 22 is the winding end pin.
[0024]
A magnet wire 23 is wound around the stator core 10 provided with an insulating portion, and drawn to form a coil of each phase. FIG. 4 is a diagram showing the routing of the magnet wire 23 of each phase, details of which will be described later.
[0025]
FIG. 5 is a diagram showing details of the connection-side insulating portion that does not include the terminal 2 as viewed from the core outer diameter side of each phase, and reference numeral 24 denotes three peaks provided on the core outer diameter side of the jumper winding pin 4. Shape, 25 is a crossover exit where the crossover 5 exits to the core outer diameter side, 26 is a crossover entrance, 27 is an exit crossover hook pin, 28 is an entrance crossover hook pin, 29 is a groove shape, 30 is a crossover winding Shows notches for attachment.
[0026]
Next, the operation will be described. As shown in FIG. 2, after the stator core 10 having the teeth 13 arranged in parallel and the core back 15 connected with a thin wall is punched out and laminated, resin molding is directly performed on the stator core 10 as shown in FIG. By assembling the parts, insulating portions are formed on the teeth 13, the tips of the teeth 13, and the core back 15.
[0027]
The terminal 2 where the end of each phase winding magnet wire and the end of each phase winding end are joined is inserted into the terminal insertion hole 20 provided in the connection side insulating portion 19 on the stator outer diameter side 18 and fixed. To do. At this time, the insulation part outside the core end face 12 in the core outer diameter side insulation part into which the terminal 2 is inserted is called a connection-side insulation part 19, and from the core end face 12 opposite to the side into which the terminal 2 is inserted. The insulating portion on the outer core outer diameter side is referred to as an anti-connection side insulating portion 6.
[0028]
The coil 1 is formed by drawing the magnet wire 23 around the tooth 13 provided with the insulating portion. The procedure for forming the coil is as shown in FIG. It is formed in order.
After the magnetic wire terminal of the phase to be formed first is wound around the winding start pin 21 provided on the connection-side insulating portion 19 on the core outer diameter side, the magnet wire 23 is hung on the hook 3 of the terminal 2. The coil is formed by being wound around the tooth 13 provided with an insulating portion.
[0029]
After the first coil is formed, the magnet wire 23 exits from the connecting wire outlet 25 to the outer periphery from the connection-side insulating portion 19 on the stator outer diameter side 18 and is adjacent to the direction in which the connecting wire 5 is routed. The connecting wire 5 is wound around the connecting wire winding pin 4 provided in the connection-side insulating portion 19 on the stator outer diameter side 18 where the coil is formed, passes through the connecting wire inlet 26 shown in FIG. The next coil is formed by being hooked on the hook pin 28, drawn to the tooth 13, and wound around the tooth 13 provided with an insulating portion.
[0030]
Here, as shown in FIG. 5, by making the distance in the axial direction from the core end face 12 of the connecting wire outlet 25 and the connecting wire inlet 26 the position of the connecting wire 5 is kept at a predetermined position. Further, the connecting wire winding pin 4 is provided with a mountain shape 24 and a groove shape 29 is provided on the outer periphery of the connection-side insulating portion 19 on the stator outer diameter side 18 so that the connecting wire 5 can be accommodated in a recess that can be formed in each. Thus, the displacement of the connecting wire 5 is prevented, and the distance from the connecting wire 5 of another phase can be secured.
[0031]
The first coil formed in the same phase is formed in the same manner. After the last coil in the same phase is formed, the magnet wire 23 is the hook of the terminal 2 provided on the connection-side insulating portion 19 on the stator outer diameter side 18. After wrapping 3 and winding the winding pin 22 for several turns, one phase is completed.
[0032]
In the above description, it has been shown that the winding-up pin 21 and the winding-up pin 22 are used. However, for example, by hooking the magnet wire 23 on the hook 3 and then smashing the hook 3, the magnet is placed in the hook 3. The wire 23 may be fixed and the bald pin may be omitted from each terminal.
[0033]
Moreover, although what provided both the mountain shape 24 of the crossover winding pin 4 and the groove shape 29 in the outer periphery of the connection side insulation part 19 was shown, either one may be sufficient.
[0034]
In the second phase and the third phase, the magnet wire 23 is routed in the same manner as in the first phase. However, as shown in FIG. 5, the crossover winding pin 4 is set as a crossover winding notch 30. By providing the crossover exit 25 with the exit crossover hook 27 interposed therebetween, it is possible to wind the crossover wire 5 of another phase on the crossover winding pin 4 and the exit crossover hook 27 is provided. The connecting wire 5 prevents the connecting wire 5 from slipping off to the connecting wire winding notch 30, and the height of the inlet and outlet of the connecting wire 5 can be changed in each phase, and the contact of the connecting wire 5 of each phase is avoided. Is possible.
[0035]
In this way, the stator coil is formed. By treating all the ends of the magnet wire 23 and all the connecting wires 5 with the insulating portion on the connection side, the magnet wire 23 is routed to the anti-connection side. It is characterized in that productivity can be improved by not being performed, quality can be improved by reducing processes, and costs can be reduced accordingly.
[0036]
In the above description, with respect to winding of the connecting wire 5 to the connecting wire winding pin 4, the connecting wire winding pin provided in the connection-side insulating portion 19 of the different phase coil adjacent in the direction in which the connecting wire 5 is routed. Although only 4 is shown, the winding location of the crossover 5 may be increased. Further, the connecting wire 5 may be wound by the connecting wire winding pin 4 provided in the connection-side insulating portion 19 of the second different phase coil.
[0037]
Thus, after winding is performed for all three phases and the formation of the coil is finished, the stator core 10 is bent forward in the direction of a predetermined stator using the thin-walled connecting portion 16 of the stator core 10 as a joint. The core mating surfaces 7 on both sides are aligned and welded and fixed.
[0038]
The terminal of the magnet wire 23 and the terminal 2 are joined by fusing, soldering, brazing or the like.
[0039]
Finally, regarding the formation of the neutral point, the height of the bald pin 22 at the end of the winding is the same in each phase, and when the neutral point connection part is placed on the end surface, the axial direction of the connecting portion with the terminal 2 The stator of the electric motor is completed by performing positioning, spot welding, soldering, brazing, and the like at the respective connection points.
[0040]
In the above description, it has been shown that the terminal 2 connected to the terminal at the end of winding of each phase is used for forming a neutral point, and that the neutral point connecting component 11 is used. The neutral point may be formed by using the terminal of the magnet wire 23 without using the neutral point or without using the neutral point connecting component 11.
[0041]
The present invention can also be applied to a stator of an electric motor having an outer rotor structure in which a rotor is provided outside the stator.
[0042]
Thus, the stator of the electric motor of the present invention can improve productivity, improve the quality accompanying it, reduce costs, and do not use the anti-connection side insulating portion 6 for terminal processing and crossover wire 5 processing. Therefore, it is possible to improve the function of the electric motor or use it for other purposes.
[0043]
In the above-described embodiment, the three-phase motor stator has been described. However, the present invention can also be applied to a two-phase motor stator.
[0044]
Embodiment 2. FIG.
FIGS. 6 and 7 are diagrams showing the second embodiment, FIG. 6 is a diagram showing the stator of the electric motor bent in reverse, and FIG. 7 is a diagram showing a manufacturing flow of the motor stator.
In the above embodiment, as shown in FIG. 6, the stator core 10 is bent in the opposite direction to the winding, and the magnet wire 23 is attached to the teeth 13 to which the insulating portion is applied in this way. When winding, it is possible to secure a sufficient space for the nozzle that guides the magnet wire 23 of the winding machine to enter, thereby improving productivity and improving quality accordingly.
[0045]
Next, the manufacturing procedure of the stator of the electric motor will be described. As shown in FIG. 7, first, the stator core 10 is assembled by stacking the teeth 13 that are arranged in parallel and the core back 15 is thinly connected and punched out.
[0046]
Next, insulating portions are formed on the teeth 13, the tips of the teeth 13, and the core back 15 by resin molding directly on the stator core 10 or assembly of parts.
[0047]
The terminal 2 is inserted into the formed insulating part. The terminal 2 where the end of each phase winding magnet wire and the end of each phase winding end are joined is inserted into the terminal insertion hole 20 provided in the connection side insulating portion 19 on the stator outer diameter side 18 and fixed. To do.
[0048]
Then, as shown in FIG. 6, which is a characteristic point of the present embodiment, the stator is bent in the opposite direction to the predetermined one.
[0049]
Although the winding of the first phase is performed, when the magnet wire 23 is wound around the tooth 13 provided with the insulating portion, a sufficient space for the nozzle for guiding the magnet wire 23 of the winding machine to enter can be secured.
[0050]
When the first phase winding is performed, after the coil is formed, the magnet wire 23 comes out of the connection-side insulating portion 19 on the stator outer diameter side 18 from the connecting wire outlet 25 and the connecting wire 5 is routed. Since the connecting wire 5 is wound around the connecting wire winding pin 4 provided in the connection-side insulating portion 19 on the stator outer diameter side 18 where a different-phase coil is formed next to the direction in which the stator is formed, Even if bent in reverse, the slack of the connecting wire 5 does not occur.
[0051]
The second and third phases are similarly wound and completed, and the stator is bent forward, the core mating surface 7 of the stator core 10 is welded, and the terminal and coil terminal are joined. A neutral point connecting component 11 is attached to the stator to complete the stator.
[0052]
According to the above-mentioned embodiment, when winding the magnet wire 23 around the tooth 13 provided with the insulating portion by bending the stator core 10 in the opposite direction to the winding, the magnet of the winding machine A sufficient space for the nozzle for guiding the wire 23 to enter can be secured, productivity can be improved, and quality can be improved accordingly.
[0053]
In addition, after the coil is formed, the magnet wire 23 exits from the connecting wire outlet 25 to the outer periphery from the connection-side insulating portion 19 on the stator outer diameter side 18 and is adjacent to the direction in which the connecting wire 5 is routed. Since the connecting wire 5 is wound around the connecting wire winding pin 4 provided on the connection-side insulating portion 19 on the stator outer diameter side 18 where the coil is formed, even if the stator is bent in the reverse direction, the connecting wire No slack of 5 occurs.
[0054]
Embodiment 3 FIG.
FIG. 8 is a diagram showing the third embodiment, and is a diagram showing a molded electric motor obtained by molding a stator of the electric motor. In the figure, reference numeral 31 denotes a pressing part of the mold, and 32 denotes a mold part.
In the molded motor that molds the stator of the electric motor of the present invention, when the width of the core back 15 is small, when the insulating portion is applied, the outer contour of the insulating portion on the stator outer diameter side 18 and the outer diameter of the stator And the mold may not be able to press the core end surface 12 when the stator is molded.
[0055]
Therefore, as shown in FIG. 1, when the insulating portion is formed, the insulating mold holding portion 9 is formed together. When the stator is molded, as shown in FIG. 8, as shown in FIG. Correspondence is made possible by using the core end surface 12 on the anti-connection side as a pressing portion 31 of the mold.
[0056]
In this embodiment, the mold mold presser portion 31 is used as the mold mold presser portion 9 of the insulating portion and the core end surface 12 on the side opposite to the connection side. For example, the mold mold presser portion 9 of the insulating portion is provided on both sides. Alternatively, the molding may be performed by other methods such as sandwiching the core end faces 12.
[0057]
In the stator of the electric motor of the present invention, when the width of the core back 15 is small, when the insulating portion is applied, the distance between the outer portion of the insulating portion on the stator outer diameter side 18 and the outer diameter of the stator is reduced, The mold may not be able to hold the core end surface 12 when the stator is molded. However, when the insulating part is formed, the mold is held together with the mold holding part 9 of the insulating part. This can be dealt with by using the mold mold pressing portion 9 and the core end surface 12 on the opposite side of the connection as the mold mold pressing portion 31.
[0058]
The stator of the electric motor of the present invention is not limited to the one that forms the outline by a mold.
[0059]
Embodiment 4 FIG.
FIG. 9 is a diagram showing the fourth embodiment and showing the configuration of the air conditioner. In the figure, 33 is an air conditioner indoor unit, 34 is an air conditioner outdoor unit, and 35 is a blower.
[0060]
The indoor unit 33 of the air conditioner has a blower connected to the outdoor unit 34 of the air conditioner and driven by the electric motor shown in the third embodiment. An air conditioner with good productivity and quality can be obtained by using an electric motor with good productivity and quality as a motor for a blower, which is a main part for an air conditioner.
[0061]
【The invention's effect】
In the stator of the electric motor according to the present invention, the connecting wire between the coils is an insulating portion on the outer diameter side of the stator core where the terminals are provided, and the connecting side insulating portion is an insulating portion on the axially outer side from the end surface of the stator core By being routed around the outer periphery, the height of the inlet and outlet to the outer periphery of the connection side insulation of the connecting wire of each phase is substantially the same, and the connecting wires of each phase are arranged in the axial direction without contact, By not routing the magnet wire to the anti-connection side, productivity and quality can be improved. In addition, positioning of the crossover wires of each phase prevents contact of crossover wires of different phases, thereby improving quality. In addition, since the insulating portion on the anti-connection side can be used for other functions of the electric motor, the function can be improved.
[0062]
In addition, the stator of the electric motor according to the present invention includes the jumper winding pin in the outer-diameter-side insulating portion of the different phase between the coils of the same phase, thereby preventing the jumper of the jumper between the coils.
[0063]
In addition, the stator of the electric motor according to the present invention is more reliably connected between the coils by winding the jumper wire around the jumper winding pin provided in the outer-diameter side insulating portion of the adjacent different phase between the coils of the same phase. It can prevent sagging of the crossover.
[0064]
In addition, the stator of the electric motor according to the present invention is provided with at least one of the outer peripheral portion of the connection-side insulating portion and the outer peripheral portion of the connecting wire winding pin with the same number of recesses as the number of phases of the electric motor, By storing in, the crossover of each phase can be prevented from contacting.
[0065]
Further, the stator of the electric motor according to the present invention is provided with at least one of the outer peripheral portion of the connection-side insulating portion and the outer peripheral portion of the connecting wire winding pin with the same number of recesses as the number of connecting wires, respectively. Since only the necessary recesses need be formed by storing the crossover wires in the recesses, the productivity is improved.
[0066]
Further, in the stator of the electric motor according to the present invention, the connecting wires of each phase are arranged in a plurality of rows in order from the stator core end surface side, and the outlet to the outer periphery of the connection side insulating portion of the first connecting wire is the connecting wire The exit to the outer periphery of the connection side insulation of the connecting wire of the other phase was provided with the exit connecting wire hook pin sandwiched between the notch next to the connecting wire winding pin. Therefore, it is possible to change the height of the entrance and exit of the crossover line in each phase. Phase crossover contact can be avoided.
[0067]
Further, the stator of the electric motor according to the present invention is formed by forming a mold die holding portion formed in the axial direction in the insulating portion so as to project to the outer periphery of the stator that becomes a pressing portion of the mold die during molding. When the width of the back is small and an insulating part is applied, the distance between the outer shell of the insulating part on the stator outer diameter side and the outer diameter of the stator becomes smaller, and the mold can hold the core end face when the stator is molded. Even if it is not possible, the mold can be molded by the mold holding part.
[0068]
In addition, the stator of the electric motor according to the present invention can be easily formed even with an insulating portion having a complicated shape by forming the insulating portion on the stator core by resin molding.
[0069]
Since the molded motor according to the present invention uses the stator of the motor according to any one of claims 1 to 8, productivity is improved and a molded motor with good quality is obtained.
[0070]
Since the blower according to the present invention uses the molded electric motor according to claim 8, a blower with good productivity and quality can be obtained.
[0071]
Since the air conditioner according to the present invention is equipped with the blower according to claim 9, a high-quality air conditioner can be obtained.
[0072]
A method for manufacturing a stator for an electric motor according to the present invention is the method for manufacturing a stator for an electric motor according to any one of claims 1 to 7, wherein the stator core provided with an insulating portion is opposite to the product. By winding the wire after bending it in an annular shape, a sufficient space for the nozzle for guiding the magnet wire of the winding machine to enter can be secured, thereby improving productivity.
[0073]
A method for manufacturing a stator for an electric motor according to the present invention is the method for manufacturing a stator for an electric motor according to claim 7, wherein when the stator is molded, the mold mold pressing portion of the insulating portion and the anti-connection side By making the core end face of the mold a pressing part of the mold, the width of the core back is small, and when the insulating part is applied, the distance between the outer part of the insulating part on the stator outer diameter side and the outer diameter of the stator is Even when the mold cannot be pressed against the core end surface when the stator is molded, the mold can be molded by the mold mold pressing portion.
[0074]
The method for manufacturing a stator for an electric motor according to the present invention is the method for manufacturing a stator for an electric motor according to claim 7, wherein both sides of the mold mold pressing portion of the insulating portion are molded when the stator is molded. By using a mold holding point, the width of the core back is small, and when an insulating part is applied, the distance between the outer part of the insulating part on the outer diameter side of the stator and the outer diameter of the stator becomes smaller. Even when the mold cannot press the core end face during molding, the mold can be molded by the mold holding part.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment and is a perspective view showing a configuration of a stator of an electric motor.
FIG. 2 shows the first embodiment and shows the stator core.
FIG. 3 is a diagram illustrating the first embodiment, and is a diagram illustrating a stator core provided with an insulating portion;
FIG. 4 is a diagram illustrating the first embodiment and is a diagram illustrating the routing of the magnet wire.
FIG. 5 is a diagram showing the first embodiment, and is a diagram showing details of a connection-side insulating portion viewed from the outer diameter of each phase.
FIG. 6 is a diagram showing the second embodiment, and is a diagram showing a stator of the electric motor bent in reverse.
FIG. 7 is a diagram illustrating the second embodiment, and is a diagram illustrating a manufacturing flow of the stator of the electric motor.
FIG. 8 is a diagram illustrating the third embodiment and is a diagram illustrating a mold motor.
FIG. 9 shows the third embodiment and shows an air conditioner.
FIG. 10 is a view showing a stator of a conventional electric motor.
[Explanation of symbols]
1 coil, 2 terminal, 3 hook, 4 crossover wire winding pin, 5 crossover wire, 6 anti-connection side insulation part, 7 core mating surface, 8 welded part, 9 insulation part mold holding part, 10 stator core , 11 Neutral point connection parts, 12 Core end face, 13 Teeth, 14 Teeth tip, 15 Core back, 16 Thin connection part, 17 Stator inner diameter side, 18 Stator outer diameter side, 19 Connection side insulation part, 20 Terminal insertion Hole, 21 winding start pin, 22 winding end winding pin, 23 magnet wire, 24 mountain shape, 25 crossover exit, 26 crossover entrance, 27 exit crossover hook pin, 28 entrance crossover hook pin, 29 Groove shape, 30 crossover winding notch, 31 mold mold pressing part, 32 mold part, 33 air conditioner indoor unit, 34 air conditioner outdoor unit, 35 blower.

Claims

Insulating part is applied to the stator iron core, in which teeth are arranged in parallel, the core back is connected with a thin wall, and the stator iron core is punched out. In a stator of an electric motor in which a coil is formed by winding a magnet wire on the motor, and a coil of a different phase is formed between in-phase coils.
The connecting wire between the coils is an insulating portion on the outer side of the stator core where the terminals are provided, and the outer periphery of the connecting side insulating portion, which is an insulating portion on the outer side in the axial direction from the end surface of the stator core, is routed. The height of the entrance and exit to the outer periphery of the connecting-side insulating portion of the connecting wire is almost the same, the connecting wires of each phase are arranged in the axial direction without contact, and the outside of the stator of the different phase between the coils of the same phase A crossover winding pin is provided on the diameter side insulating portion, and when the winding is performed by bending the stator iron core in the opposite direction to the predetermined one, it is provided on the outer diameter side insulating portion of the adjacent different phase between the coils of the same phase. A stator for an electric motor, wherein a jumper wire is wound around a jumper wire winding pin.

At least one of the outer peripheral portion of the connection-side insulating portion and the outer peripheral portion of the connecting wire winding pin is provided with recesses having the same number as the number of phases of the motor, and the connecting wires are housed in the recesses. Item 6. A stator of an electric motor according to Item 1 .

At least one of the outer peripheral portion of the connection-side insulating portion and the outer peripheral portion of the connecting wire winding pin is provided with the same number of recesses as the number of the connecting wires, respectively, and the connecting wire is used as a recess. The motor stator according to claim 1 , wherein the motor stator is housed.

The crossover wires of each phase are arranged in a plurality of rows in order from the stator core end face side, and the outlet to the outer periphery of the connection-side insulating portion of the first phase crossover wire is a notch beside the crossover winding pin, The exit to the outer periphery of the connection side insulating portion of the connecting wire of the other phase is provided with an exit connecting wire hook pin sandwiched between the connecting wire winding pin and a notch on the side. The stator of the electric motor according to 1 .

The stator of an electric motor according to claim 1, wherein a molding die pressing portion formed in an axial direction is formed on the insulating portion so as to protrude from the outer periphery of the stator that becomes a pressing portion of the molding die during molding. .

The stator of the electric motor according to any one of claims 1 to 5, characterized in that the insulating portion is formed of a resin molding the stator core.

Mold motor characterized by using a stator of a motor according to any one of claims 1-6.

A blower using the molded electric motor according to claim 7 .

An air conditioner equipped with the blower according to claim 8 .