JP2004096838A

JP2004096838A - Electric motor stator, molded electric motor, air conditioner and electric motor stator manufacturing method

Info

Publication number: JP2004096838A
Application number: JP2002251783A
Authority: JP
Inventors: Mineo Yamamoto; 山本　峰雄; Kazuhiro Nakane; 中根　和広; Hiroyuki Ishii; 石井　博幸; Togo Yamazaki; 山崎　東吾; Toyoji Nomura; 野村　豊史; Nobuaki Miyake; 三宅　展明; Hiroshi Takama; 高間　広
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2002-08-29
Filing date: 2002-08-29
Publication date: 2004-03-25
Anticipated expiration: 2022-08-29
Also published as: JP3923871B2

Abstract

【課題】隣り合うコイルが異相とな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。
【解決手段】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たものである。
【選択図】　　　　図１An object of the present invention is to improve productivity and quality by performing all terminal processing of a coil of a stator of an electric motor in which adjacent coils are out of phase and processing of a crossover in a connection side insulating portion.
An insulating portion is provided on a stator core in which teeth are arranged in parallel, a core back is thinly connected and punched, and a magnet wire is wound around the insulating portion provided on the teeth to form a coil. In a stator of an electric motor in which a different-phase coil is formed between in-phase coils, a crossover wire between the coils is an insulating portion on a stator core outer diameter side where a terminal is provided, and is disposed in an axial direction from a stator core end face. The outer periphery of the connection-side insulation part, which is the outer insulation part, is routed, and the height of the entrance and exit of the connection wires of each phase to the periphery of the connection-side insulation part is almost the same, and the connection wires of each phase come into contact It is arranged in the axial direction without any.
[Selection diagram] Fig. 1

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]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a stator of a motor, and more particularly, to a structure in which teeth are arranged in parallel, a back yoke is thinly connected, and a structure of an insulating portion provided on a stator core of the motor to be punched, and a magnet wire is provided in the teeth. The present invention relates to a method for processing a crossover wire that connects a magnet wire terminal of a coil formed by winding and a coil.
[0002]
[Prior art]
FIG. 10 is a diagram illustrating a stator of a conventional electric motor disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-224791. As shown in the figure, in the conventional motor stator, a part of the crossover wire 5 between the coils 1 is connected to the connection side insulation part 19 provided with the terminal 2 connected to the magnet wire terminal and the non-connection side insulation part 6. , Or a part of the processing of the magnet wire end, and also used as insulating parts on both sides of the stator core 10.
[0003]
[Problems to be solved by the invention]
The stator of the conventional motor is configured as described above, the teeth 13 are arranged in parallel, and the core back is connected with a thin wall and the stator is wound. In the stator, when the coils 1 are formed by connecting the crossover wires 5 without cutting between the coils 1 of each phase, the crossover wires 5 or the magnet wire terminals are routed to the non-connection side insulating portion 6 for processing. Therefore, there are problems in that the number of manufacturing steps increases and wiring is performed, so that time is increased and a space on the side opposite to the connection side cannot be secured.
[0004]
The present invention has been made in order to solve the above-described problems, and all of terminal processing of a stator coil of an electric motor in which an out-of-phase coil is formed between in-phase coils and processing of a crossover are performed on a connection side. An object of the present invention is to improve productivity and quality by performing the process in an insulating section.
[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 the stator core is punched out, and an insulating portion is provided. The magnet wire is wound around the insulating portion provided on the teeth. In the stator of the electric motor in which the coils are formed and the out-of-phase coils are formed between the in-phase coils, the crossover wires between the coils are fixed by the insulating portion on the outer diameter side of the stator core where the terminals are provided. The outer circumference of the connection-side insulation part, which is the insulation part axially outside of the core core end face, is routed, and the height of the entrance and exit to the outer circumference of the connection-side insulation part of each phase is almost the same. Are arranged in the axial direction without contact.
[0006]
Further, the stator of the electric motor according to the present invention is characterized in that a crossover winding pin is provided on a different-phase stator outer-diameter-side insulating portion between the coils of the same phase.
[0007]
Further, the stator of the electric motor according to the present invention is characterized in that a crossover wire is wound around a crossover wire winding pin provided in an adjacent outer-phase stator outer-diameter insulating portion between coils of the same phase.
[0008]
Further, the stator for the electric motor according to the present invention may be configured such that 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 phases of the motor, and It is characterized by being stored in
[0009]
Further, the stator of the electric motor according to the present invention is configured such that at least one of the outer peripheral portion of the connection side insulating portion and the outer peripheral portion of the crossover winding pin has a recess having the same number as the number of each crossover. And the crossover is stored in the recess.
[0010]
Also, in the stator of the electric motor according to the present invention, the crossover wires of each phase are arranged in a plurality of rows in order from the stator core end face side, and the exit of the first phase crossover wire to the outer periphery of the connection side insulating portion is a crossover wire. The notch beside the winding pin was provided, and the exit to the outer periphery of the connection side insulating portion of the other-phase crossover was provided with the exit crossover hook pin interposed between the notch next to the crossover winding pin. It is characterized by the following.
[0011]
Further, the stator of the electric motor according to the present invention is characterized in that a molding die holding portion formed in an axial direction is formed on the insulating portion so as to protrude around an outer periphery of the stator which is a holding position of the molding die during molding. I do.
[0012]
Further, 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]
A molded electric motor according to the present invention uses the stator of the electric motor according to any one of claims 1 to 8.
[0014]
A blower according to the present invention uses the mold electric motor according to claim 9.
[0015]
An air conditioner according to the present invention is provided with the blower according to claim 10 mounted thereon.
[0016]
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 8, wherein a stator iron core provided with an insulating portion is formed in a manner opposite to a product. It is characterized in that the winding is applied after being bent annularly in the direction.
[0017]
Further, 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 molding the stator, the molding die holding part of the insulating part and the side opposite to the connection side. Is characterized in that the end face of the core is a place where the mold is pressed.
[0018]
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 both sides of the mold pressing portion of the insulating portion are molded when the stator is molded. It is characterized in that it is a holding position of a mold.
[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.
1 to 5 are views showing a first embodiment, FIG. 1 is a perspective view showing a configuration of a stator of an electric motor, FIG. 2 is a view showing a stator core of the electric motor, and FIG. FIG. 4 is a diagram illustrating a core iron core, FIG. 4 is a diagram illustrating routing of a magnet wire, and FIG. 5 is a diagram illustrating details of a connection-side insulating portion viewed from the outer diameter of each phase.
[0020]
The stator of the motor shown in FIG. 1 is a three-phase, 12-slot, 8-pole stator. The configuration will be described below, but 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 a stator core 10, and 2 denotes a terminal of a winding start magnet wire of each phase and a terminal of a winding end magnet wire of each phase. 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 between coils of each phase, and 6 is a terminal 2 inserted. A non-connection side insulating portion, which is an insulating portion on the core outer diameter side outside the core end surface 12 opposite to the core side, 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 welded portion of the core mating surface 7. A mold pressing part of 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 the appearance as shown in FIG. 1, and performs all the terminal processing of the coil of the stator of the electric motor in which the out-of-phase coil 1 is formed between the in-phase coils and the processing of the crossover 5. This is performed at the connection side insulating section 19. As will be described later in detail, the connecting wires 5 are routed along the outer peripheral portion of the connection side insulating portion 19, and the connecting wires 5 of each phase are arranged in three stages so as not to contact in the axial direction. The height of the entrance from the outer peripheral portion of the connection side insulating portion 19 of each of the connecting wires 5 and the height of the outlet to the outer peripheral portion of the connection side insulating portion 19 are substantially the same. Further, the connecting wire 5 is wound around the connecting wire winding pin 4 provided on the connection side insulating portion 19 where the different-phase coils, particularly adjacent different-phase coils, are formed between the coils of the same phase.
[0022]
FIG. 2 et seq. 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 the punched ones in which the teeth 13 are arranged in parallel and the core back 15 is connected with a thin wall. FIG. 2 shows a stator core 10 of the electric motor. In the figure, 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, reference numeral 17 denotes a stator inner diameter side, and reference numeral 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 a stator core provided with the insulating portion. In the drawing, reference numeral 6 denotes an anti-connection portion which is an insulating portion on the core outer diameter side outside the core end face 12 opposite to the side where the terminal 2 is inserted. A side insulating portion, 19 is a core outer diameter side insulating portion into which the terminal 2 is inserted, a connection side insulating portion which is an insulating portion outside the core end surface 12, 20 is a terminal insertion hole into which the terminal 2 is inserted, and 21 is a terminal insertion hole. A winding start pin 22 is an end winding pin.
[0024]
A magnet wire 23 is wound around the stator core 10 provided with the insulating portion, and is wound to form a coil of each phase. FIG. 4 is a diagram showing the routing of the magnet wire 23 of each phase, which will be described in detail later.
[0025]
FIG. 5 is a diagram showing the details of the connection-side insulating portion having no terminal 2 as viewed from the core outer diameter side of each phase. Reference numeral 24 denotes three peaks provided on the core outer diameter side of the crossover wire winding pin 4. Shape, 25 is a crossover exit where the crossover 5 is on the outer diameter side of the core, 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 a notch for attachment.
[0026]
Next, the operation will be described. After the teeth 13 are arranged in parallel as shown in FIG. 2 and the stator core 10 to which the core back 15 is connected by thinning is punched and laminated, as shown in FIG. 3, resin molding is directly performed on the stator core 10, or An insulating part is formed on each of the teeth 13, the tips of the teeth 13 and the core back 15 by assembling the components.
[0027]
The terminal 2 to which the end of the winding start magnet wire of each phase and the end of the winding end magnet wire of each phase are joined is inserted and fixed in the terminal insertion hole 20 provided in the connection side insulating portion 19 on the stator outer diameter side 18. I do. At this time, the insulating portion on the outer diameter side of the core into which the terminal 2 is inserted, the insulating portion outside the core end surface 12 is referred to as a connection side insulating portion 19, and the insulating portion from the core end surface 12 opposite to the side where the terminal 2 is inserted. The outer insulating portion on the outer diameter side of the core is referred to as a non-connection side insulating portion 6.
[0028]
The coil 1 is formed by winding the magnet wire 23 around the tooth 13 provided with the insulating portion. The coil forming procedure is as shown in FIG. They are formed in order.
After the magnet wire terminal of the phase formed first is wound several turns 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 hooked on the hook 3 of the terminal 2. The coil is formed by being wound around the tooth 13 provided and insulated.
[0029]
After the first coil is formed, the magnet wire 23 exits from the connecting wire outlet 25 to the outer periphery of the connection side insulating portion 19 on the stator outer diameter side 18 and is located in a different phase next to the direction in which the connecting wire 5 is routed. The winding 5 is wound around the connecting wire winding pin 4 provided on the connection side insulating portion 19 of the stator outer diameter side 18 where the coil is formed, and passes through the connecting wire entrance 26 shown in FIG. The next coil is formed by being wound around the tooth 13 by being hooked on the hook pin 28 and being wound around the tooth 13 provided with the insulating portion.
[0030]
Here, as shown in FIG. 5, by making the distances in the axial direction of the crossover outlet 25 and the crossover entrance 26 from the core end face 12 the same, the position of the crossover 5 is kept at a predetermined position. Further, the crossover 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 crossover wire 5 is accommodated in a recess which can be formed as a recess. Thereby, the displacement of the crossover 5 is prevented, and the distance to the crossover 5 of another phase can be secured.
[0031]
The coil following the first phase is formed in the same manner, and after the last coil in the same phase is formed, the magnet wire 23 is connected to the hook of the terminal 2 provided on the connection side insulating portion 19 of the stator outer diameter side 18. 3 and then winding several turns around the end pin 22 to complete one phase.
[0032]
In the above description, the winding start pin 21 and the winding end pin 22 are used. However, for example, by hooking the magnet wire 23 on the hook 3 and then crushing the hook 3, the magnet 3 The wires 23 may be fixed and the pins from each terminal may be omitted.
[0033]
In addition, although both the mountain shape 24 of the crossover wire winding pin 4 and the groove shape 29 provided on the outer periphery of the connection side insulating portion 19 are shown, only one of them may be provided.
[0034]
The magnet wire 23 is routed in the second and third phases in the same manner as in the first phase. However, as shown in FIG. By providing the crossover exit 25 across the exit crossover hook pin 27, it is possible to wind the crossover wire 5 of another phase around the crossover winding pin 4, and the presence of the exit crossover hook pin 27 Prevent the crossover 5 from slipping into the crossover winding notch 30 and change the height of the entrance and exit of the crossover 5 in each phase, and avoid contact of the crossover 5 in each phase. Is possible.
[0035]
In this way, the coils of the stator are formed, but by processing all the terminals of the magnet wire 23 and all the crossover wires 5 with the insulating portion on the connection side, it is possible to route the magnet wire 23 to the anti-connection side. It is characterized in that productivity can be improved by not performing the process, quality can be improved by reducing the number of processes, and the cost can be reduced accordingly.
[0036]
In the above description, regarding the winding of the connecting wire 5 around the connecting wire winding pin 4, the connecting wire winding pin provided on the connection side insulating portion 19 of a coil of a different phase adjacent in the direction in which the connecting wire 5 is drawn. Although only 4 is shown, the number of winding points of the crossover 5 may be increased. Alternatively, the crossover wire 5 may be wound on the crossover wire winding pin 4 provided on the connection side insulating portion 19 of the second out-of-phase coil.
[0037]
After the three phases are wound and the coil formation is completed in this manner, the stator core 10 is bent forward in the direction of a predetermined stator using the thin connecting portion 16 of the stator core 10 as an joint. The core mating surfaces 7 on both sides are joined together and fixed by welding.
[0038]
In addition, the terminal of the magnet wire 23 and the terminal 2 are joined by fusing, soldering, brazing, or the like.
[0039]
Lastly, regarding the formation of the neutral point, the height of the end pin 22 is the same for each phase, and when the neutral point connecting part is placed on the end face, the neutral point is formed in the axial direction of the joint with the terminal 2. The stator of the electric motor is completed by performing spot welding, soldering, brazing, and the like on the joint portions that are positioned.
[0040]
In the above description, the terminal 2 connected to the terminal at the end of each phase is used to form a neutral point, and the neutral point connecting part 11 is used. May be used for the neutral point, or the neutral point may be formed by using the terminal of the magnet wire 23 without using the neutral point connecting part 11.
[0041]
The present invention is also applicable to a motor stator having an outer rotor structure in which a rotor is provided outside the stator.
[0042]
As described above, the stator of the electric motor according to the present invention can improve the productivity, thereby improve the quality and reduce the cost, and do not use the anti-connection side insulating portion 6 for the terminal treatment and the treatment of the crossover 5. Therefore, it is possible to improve the function of the electric motor or use it for other purposes.
[0043]
In the above embodiment, the description has been made using the stator of the three-phase motor, but the present invention is also applicable to the stator of the two-phase motor.
[0044]
Embodiment 2 FIG.
6 and 7 are views showing the second embodiment, FIG. 6 is a view showing a motor stator that is bent in reverse, and FIG. 7 is a view showing a manufacturing flow of the motor stator.
In the above-described 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 tooth 13 provided with the insulating portion. At the time of winding, a sufficient space for a nozzle for guiding the magnet wire 23 of the winding machine can be secured, and productivity is improved, and accordingly, quality can be improved.
[0045]
Next, a procedure for manufacturing the stator of the electric motor will be described. As shown in FIG. 7, first, the teeth 13 are arranged in parallel, the core back 15 is connected with a thin wall and punched out, and the stator core 10 is assembled.
[0046]
Next, an insulating portion is formed on each of the teeth 13, the tips of the teeth 13, and the core back 15 by resin molding or assembling parts directly on the stator core 10.
[0047]
The terminal 2 is inserted into the formed insulating portion. The terminal 2 to which the end of the winding start magnet wire of each phase and the end of the winding end magnet wire of each phase are joined is inserted and fixed in the terminal insertion hole 20 provided in the connection side insulating portion 19 on the stator outer diameter side 18. I do.
[0048]
Then, as shown in FIG. 6, which is a feature of the present embodiment, the stator is bent in a direction opposite to the predetermined direction.
[0049]
The first-phase winding is applied, but when winding the magnet wire 23 around the tooth 13 provided with the insulating portion, a sufficient space for a nozzle for guiding the magnet wire 23 of the winding machine to enter can be secured.
[0050]
When the first phase winding is applied, after the coil is formed, the magnet wire 23 exits from the crossover outlet 25 to the outer periphery from the connection side insulating portion 19 on the stator outer diameter side 18, and the crossover 5 is routed. 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 out-of-phase coil adjacent to the direction in which the coil is formed is formed. Even if it is bent in reverse, the sagging of the crossover 5 does not occur.
[0051]
The windings are applied to the second and third phases in the same manner. After completion, the stator is bent forward, the core mating surface 7 of the stator core 10 is welded, and the terminal and the coil end are joined. Then, the neutral point connection part 11 is attached to the stator to complete the stator.
[0052]
According to the above-described embodiment, when winding the magnet wire 23 around the tooth 13 provided with the insulating portion by bending the stator core 10 in a direction opposite to the predetermined direction, the magnet of the winding machine is used. A sufficient space for the nozzle for guiding the wire 23 to enter can be secured, the productivity is improved, and the quality can be improved accordingly.
[0053]
Further, after the coil is formed, the magnet wire 23 exits from the crossover wire outlet 25 to the outer periphery from the connection side insulating portion 19 on the stator outer diameter side 18 and is located in a different phase next to the direction in which the crossover wire 5 is drawn. The winding 5 is wound around the connecting wire winding pin 4 provided on the connection side insulating portion 19 of the stator outer diameter side 18 where the coil is formed. Therefore, even if the stator is bent in the reverse No sag of 5 occurs.
[0054]
Embodiment 3 FIG.
FIG. 8 shows the third embodiment and is a view showing a molded electric motor in which a stator of the electric motor is molded. In the drawing, reference numeral 31 denotes a pressing portion of a mold, and 32 denotes a mold portion.
In the mold motor for molding 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 provided, the outer diameter of the insulating portion on the stator outer diameter side 18 and the outer diameter of the stator are different. May be reduced, and the mold may not be able to press the core end surface 12 during the molding of the stator.
[0055]
Therefore, as shown in FIG. 1, when forming the insulating portion, the mold pressing portion 9 of the insulating portion is formed together, and when molding the stator, as shown in FIG. This is made possible by making the core end face 12 on the anti-connection side a holding position 31 of the mold.
[0056]
In the present embodiment, the pressing portion 31 of the molding die is the core end surface 12 on the side opposite to the molding die pressing portion 9 of the insulating portion. However, for example, the molding die pressing portion 9 of the insulating portion may be formed on both sides. Alternatively, the molding may be performed by another method such as sandwiching the core end surfaces 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 provided, the distance between the outer periphery of the insulating portion on the stator outer diameter side 18 and the outer diameter of the stator becomes smaller, In some cases, the mold cannot press the core end face 12 during the molding of the stator. However, when the insulating section is formed, the mold pressing section 9 of the insulating section is formed together. This can be achieved by setting the core end surface 12 on the side opposite to the connection side with the mold pressing part 9 as the pressing part 31 of the mold.
[0058]
The stator of the electric motor of the present invention is not limited to the one in which the outer shell is formed by molding.
[0059]
Embodiment 4 FIG.
FIG. 9 is a diagram showing the fourth embodiment, and is a diagram showing a configuration of an air conditioner. In the figure, 33 is an indoor unit of an air conditioner, 34 is an outdoor unit of an air conditioner, and 35 is a blower.
[0060]
The indoor unit 33 of the air conditioner is connected to the outdoor unit 34 of the air conditioner, and includes the blower driven by the electric motor described in Embodiment 3. By using a motor with good productivity and quality as a blower motor, which is a main component for an air conditioner, an air conditioner with good productivity and quality can be obtained.
[0061]
【The invention's effect】
In the stator of the electric motor according to the present invention, the connecting wires between the coils are the insulating portions on the outer diameter side of the stator core where the terminals are provided, and the connection side insulating portions which are the insulating portions axially outside the end faces of the stator core. The outer circumference is routed, and the height of the entrance and the exit to the outer circumference of the connection side insulation portion of each phase crossover is almost the same, and the crossover of each phase is arranged in the axial direction without contact, By not running the magnet wire to the anti-connection side, productivity and quality are improved. In addition, by positioning the crossover wires of each phase, the contact of the crossover wires of different phases is prevented, so that the quality is improved. In addition, since the insulating portion on the anti-connection side can be used for other functions of the motor, the function is improved.
[0062]
In addition, the stator of the electric motor according to the present invention can prevent the crossover between the coils from sagging by providing the crossover winding pin on the outer-phase stator outer-diameter insulating portion between the coils of the same phase.
[0063]
In addition, the stator of the electric motor according to the present invention, by winding the connecting wire around the connecting wire winding pin provided on the adjacent outer-phase stator outer-diameter insulating portion between the coils of the same phase, more reliably between the coils. The sagging of the crossover can be prevented.
[0064]
Further, the stator for the electric motor according to the present invention may be configured such that 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 phases of the motor, and , It is possible to prevent the crossover of each phase from coming into contact with each other.
[0065]
Further, the stator of the electric motor according to the present invention is configured such that 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 respective connecting wires. And the crossovers are stored in the recesses, so that only the necessary recesses need to be formed, thereby improving the productivity.
[0066]
Also, in the stator of the electric motor according to the present invention, the crossover wires of each phase are arranged in a plurality of rows in order from the stator core end face side, and the exit of the first phase crossover wire to the outer periphery of the connection side insulating portion is a crossover wire. As the notch beside the winding pin, the exit to the outer periphery of the connection side insulating portion of the crossover wire of the other phase was provided with the exit crossover hook pin sandwiched between the notch next to the crossover winding pin. By having the exit crossover hook pin, the crossover can be prevented from falling into the notch for winding the crossover, and the height of the entrance and exit of the crossover can be changed in each phase. Phase crossover contact can be avoided.
[0067]
Further, the stator of the electric motor according to the present invention is characterized in that the insulating portion has a molding die holding portion formed in the axial direction so as to protrude around an outer periphery of the stator which is a holding portion of the molding die at the time of molding. When the width of the back is small and the insulating part is applied, the distance between the outer circumference of the insulating part on the stator outer diameter side and the outer diameter of the stator becomes smaller, and the mold presses the core end surface when molding the stator. Even when it is not possible, molding can be performed by the mold pressing part.
[0068]
Further, the stator of the electric motor according to the present invention can easily form an insulating portion having a complicated shape by forming the insulating portion on the stator core by resin molding.
[0069]
In the mold motor according to the present invention, productivity is improved and a high-quality mold motor is obtained by using the stator of the motor according to any one of claims 1 to 8.
[0070]
With the blower according to the present invention, a blower with high productivity and high quality can be obtained by using the mold electric motor according to claim 8.
[0071]
In the air conditioner according to the present invention, a high-quality air conditioner can be obtained by mounting the blower according to the ninth aspect.
[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 a stator iron core provided with an insulating portion is formed in a manner opposite to a product. By applying the winding after bending in the direction annular, a sufficient space for the nozzle for guiding the magnet wire of the winding machine to enter can be secured, and the productivity is improved.
[0073]
Further, 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 molding the stator, the molding die holding part of the insulating part and the side opposite to the connection side. When the core back surface is used as the holding point of the mold, the width of the core back is small, and when the insulating part is applied, the distance between the outer circumference of the insulating part on the outer diameter side of the stator and the outer diameter of the stator is reduced. Even if the core cannot be pressed against the core end surface when the stator is molded, the molding can be performed by the mold pressing portion.
[0074]
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 both sides of the mold pressing portion of the insulating portion are molded when the stator is molded. By setting it as a holding part of the mold, the width of the core back is small, and when the insulating part is provided, the distance between the outer diameter of the insulating part on the stator outer diameter side and the outer diameter of the stator becomes smaller, Even when the mold cannot press the core end face during the molding, the molding can be performed by the mold pressing portion.
[Brief description of the drawings]
FIG. 1 shows the first embodiment, and is a perspective view showing a configuration of a stator of an electric motor.
FIG. 2 shows the first embodiment and is a diagram showing a stator core.
FIG. 3 shows the first embodiment and is a view showing a stator core provided with an insulating portion.
FIG. 4 is a view showing the first embodiment, and showing drawing of a magnet wire.
FIG. 5 is a view showing the first embodiment, and is a view showing details of a connection side insulating portion viewed from an outer diameter of each phase.
FIG. 6 is a view showing the second embodiment, and is a view showing the stator of the electric motor bent in reverse.
FIG. 7 is a view showing the second embodiment, and is a view showing a manufacturing flow of the stator of the electric motor.
FIG. 8 is a view showing the third embodiment, and is a view showing a mold electric motor.
FIG. 9 shows the third embodiment and is a diagram showing an air conditioner.
FIG. 10 is a view showing a stator of a conventional electric motor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Coil, 2 terminals, 3 hooks, 4 crossover wire winding pins, 5 crossover wires, 6 non-connection side insulation part, 7 core mating surface, 8 welded part, 9 mold holding part of insulation part, 10 stator core , 11 Neutral point connection parts, 12 core end face, 13 teeth, 14 teeth tip, 15 core back, 16 thin connecting part, 17 stator inner diameter side, 18 stator outer diameter side, 19 connection side insulating part, 20 terminal insertion Hole, 21 winding start pin, 22 winding end 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 Notch for winding crossover wire, 31 Pressing point of mold die, 32 Mold part, 33 Indoor unit of air conditioner, 34 Outdoor unit of air conditioner, 35 Blower.

Claims

Teeth are arranged in parallel, a core back is connected with a thin wall, an insulating portion is applied to a stator core that is punched out, and a coil is formed by winding a magnet wire around the insulating portion applied to the teeth, In a motor stator in which an out-of-phase coil is formed between in-phase coils,
The crossover between the coils is an insulating portion on the stator core outer diameter side where the terminal is provided, and is routed around the outer periphery of the connection side insulating portion, which is an insulating portion axially outside the stator core end face, and is connected to each phase. A stator for an electric motor, wherein a height of an entrance and an exit of a connecting wire to an outer periphery of the connection side insulating portion are substantially the same, and the connecting wires of each phase are arranged in an axial direction without contact.

The stator for an electric motor according to claim 1, further comprising a cross-wire winding pin provided on the outer-diameter side insulating portion of the different-phase stator between the coils of the same phase.

3. The stator for an electric motor according to claim 2, wherein the connecting wire is wound around a connecting wire winding pin provided on the adjacent outer-diameter insulating portion of the stator of the different phase between the coils of the same phase.

At least one of the outer peripheral portion of the connection-side insulating portion and the outer peripheral portion of the crossover wire winding pin is provided with the same number of concave portions as the number of phases of the electric motor, and the crossover wire is housed in the concave portion. Item 3. An electric motor stator according to item 2.

At least one of the outer peripheral portion of the connection-side insulating portion and the outer peripheral portion of the crossover wire winding pin is provided with the same number of recesses as the number of the respective crossover wires, and the crossover wire is formed in the concave portion. The stator for an electric motor according to claim 2, wherein the 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 exit of the first phase crossover wire to the outer periphery of the connection side insulating portion is a lateral notch of the crossover wire winding pin, The exit of the crossover wire of the other phase to the outer periphery of the connection side insulating portion is provided with an exit crossover hook pin sandwiched between the crossover winding pin and a notch beside the crossover winding pin. 3. The stator of the electric motor according to 2.

2. The stator for an electric motor according to claim 1, wherein the insulating portion is provided with a mold pressing portion formed in an axial direction so as to protrude around an outer periphery of the stator which is a pressing portion of the molding die during molding. .

The stator for an electric motor according to any one of claims 1 to 7, wherein the insulating portion is formed on the stator core by resin molding.

A molded electric motor using the electric motor stator according to claim 1.

A blower using the mold electric motor according to claim 9.

An air conditioner equipped with the blower according to claim 10.

It is a manufacturing method of the stator of the electric motor in any one of Claims 1-8, Comprising:
A method for manufacturing a stator for an electric motor, comprising: bending a stator core provided with an insulating portion in an annular direction in a direction opposite to that of a product, followed by winding.

It is a manufacturing method of the stator of the electric motor of Claim 7, Comprising:
A method for manufacturing a stator for an electric motor, wherein a core end face on a side opposite to a connection side of a molding die holding part of an insulating part is used as a holding part of a molding die when molding a stator.

It is a manufacturing method of the stator of the electric motor of Claim 7, Comprising:
A method of manufacturing a stator for an electric motor, wherein when molding a stator, both sides of a mold pressing portion of an insulating portion are used as pressing portions of a molding die.