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JP4015314B2 - Insulation structure in stator for outer rotor type multipolar generator - Google Patents
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JP4015314B2 - Insulation structure in stator for outer rotor type multipolar generator - Google Patents

Insulation structure in stator for outer rotor type multipolar generator Download PDF

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Publication number
JP4015314B2
JP4015314B2 JP02538999A JP2538999A JP4015314B2 JP 4015314 B2 JP4015314 B2 JP 4015314B2 JP 02538999 A JP02538999 A JP 02538999A JP 2538999 A JP2538999 A JP 2538999A JP 4015314 B2 JP4015314 B2 JP 4015314B2
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Japan
Prior art keywords
coil
stator
bobbin
coils
holder
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Expired - Fee Related
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JP02538999A
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JP2000224793A (en
Inventor
伸二 菊地
勉 平野
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Honda Motor Co Ltd
Sawafuji Electric Co Ltd
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Honda Motor Co Ltd
Sawafuji Electric Co Ltd
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Priority to JP02538999A priority Critical patent/JP4015314B2/en
Priority to CA 2297534 priority patent/CA2297534C/en
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Description

【0001】
【発明の属する技術分野】
本発明は、リング状に一体に連なるコア基部の外周に複数の突極が相互間に等間隔をあけて突設されて成るステータコアと、該ステータコアを被覆するボビンと、前記各突極に対応する部分で前記ボビンに巻装されるコイルとを備え、相互に隣接するコイル間に外方に開いたV字状の空隙が形成されるアウタロータ型多極発電機用ステータにおいて、隣接コイル間の絶縁能を高めた絶縁構造に関するものである。
【0002】
【従来の技術】
従来、かかるステータは、特開平9−93849号公報等により既に知られており、このものでは、各突極にそれぞれ対応したコイル間に、外方に開いたV字状の空隙が生じたままである。
【0003】
【発明が解決しようとする課題】
ところで、相互に隣接する突極にボビンを介してそれぞれ巻装されるコイル間の絶縁耐力を向上したいときに、コイル間に生じている空隙に絶縁部材を挿入することが考えられるが、その際、前記空隙が外方に開いたV字状となっているので、シート状の絶縁部材を隣接コイル間に挿入するだけでは絶縁部材が抜け落ちてしまう。なお絶縁部材を隣接コイル間に挿入した状態でステータにワニス含浸処理を施してしまえば絶縁部材が落下してしまうことはないが、ワニス含浸処理を実行しているときに絶縁部材が前記空隙内で移動してしまうと十分な絶縁耐力が得られないことになる。
【0004】
本発明は、かかる事情に鑑みてなされたものであり、アウタロータ型多極発電機用ステータにおいて、簡単な構造で隣接コイル間の絶縁耐力を向上し得るようにした絶縁構造を提供することを目的とする。
【0005】
【課題を解決するための手段】
上記目的を達成するために、本発明は、リング状に一体に連なるコア基部の外周に複数の突極が相互間に等間隔をあけて突設されて成るステータコアと、該ステータコアを被覆するボビンと、前記各突極に対応する部分で前記ボビンに巻装されるコイルとを備え、相互に隣接するコイル間に外方に開いたV字状の空隙が形成されるにおいて、ワニス含浸前の状態で、前記各突極のうち或る特定の突極に対応したコイルと、前記ステータコアの周方向に沿って前記特定の突極に隣接する突極に対応したコイルとの間に、3つの屈曲部を有したW字形の横断面形状となるように絶縁紙を山形に折って形成される絶縁部材が、該絶縁部材の両側の前記コイルの一方に前記3つの屈曲部のうち中央部の1つおよび両端部を弾発的に接触せしめるとともに他方の前記コイルに残余の2つの屈曲部を弾発的に接触せしめつつ挿入されることを特徴とする。
【0006】
このような構成によれば、絶縁紙から成る絶縁部材が隣接コイル間に挿入されるので、隣接コイル間の絶縁耐力を向上することができる。しかも絶縁部材は、絶縁紙を山形に折って形成されており、両側の隣接コイルに弾発的に接触しつつ隣接コイル間に挿入されるものであるので、ワニス含浸前およびワニス含浸処理実行時に絶縁部材が隣接コイル間に確実に保持されることになり、簡単な構造で隣接コイル間の絶縁耐力を確実に向上することができる。
【0007】
【発明の実施の形態】
以下、本発明の実施の形態を、添付図面に示した本発明の一実施例に基づいて説明する。
【0008】
図1〜図16は本発明の一実施例を示すものであり、図1はアウタロータ型多極発電機の縦断面図であって図2の1−1線断面図、図2は図1の2−2線矢視方向から見たステータの平面図、図3は図1の3−3線矢視方向から見たステータの背面図、図4はホルダ装着状態での図2の4−4線に沿う拡大断面図、図5はコイルの接続回路図、図6はコイル側端子、支持板および雄型端子の斜視図、図7は図6の7矢視図、図8は図7の8矢視図、図9はホルダの側面図、図10は図9の10矢視図、図11は雌型端子および外部導線が装着された状態でのホルダの側面図、図12は図11の12矢視図、図13は図12の13−13線断面図、図14は絶縁部材を装着する状態を示す斜視図、図15は絶縁部材の側面図、図16は図15の16矢視図である。
【0009】
先ず図1において、このアウタロータ型多極発電機のステータ21は、図示しないエンジン本体に連なるスリーブ22に複数本たとえば4本のボルト23…により結合されており、図示しないエンジンのクランクシャフト24がステータ21を同軸に貫通するようにしてスリーブ22内に同軸に配置され、スリーブ22およびクランクシャフト24間には、軸受25およびシール部材26が設けられる。クランクシャフト24の端部には、ステータ21を覆うようにして椀状に形成されるロータヨーク27が同軸に締結され、ロータヨーク27の内周には、ステータ21との間にわずかなエアギャップを形成するようにしてステータ21を同軸に囲繞するマグネット29が固着される。またロータヨーク27の開放端側を覆うようにしてカバー30がスリーブ22に固着される。
【0010】
ステータ21は、相互に積層された複数枚のコア板から構成されるステータコア31を備えるものであり、該ステータコア31は、リング状に一体に連なるコア基部32の外周に、略T字状に形成される複数たとえば27個の突極33,33…が相互間に等間隔をあけて突設されて成る。
【0011】
ステータコア31を構成する複数枚のコア板は、その積層方向両端間にわたって合成樹脂製のボビン34で部分的に被覆されることにより、相互の積層状態を保持されてステータコア31を構成するものであり、ボビン34は、各突極33,33…の先端部およびコア基部32の一部内周面を露出するようにして、ステータコア31をその軸方向両端間にわたって被覆するように形成される。
【0012】
図2および図3を併せて参照して、コア基部32およびボビン34の周方向に等間隔をあけた複数箇所たとえば4箇所には、第1〜第4挿通孔351 ,352 ,353 ,354 が設けられ、それらの挿通孔351 〜354 には、スリーブ22にステータ21を締着するためのボルト23…がそれぞれ挿通される。
【0013】
さらに図4を併せて参照して、ステータコア31におけるコア基部32の内周には、第1〜第4挿通孔351 〜354 相互間でコア基部32の軸方向両端間にわたる4つの溝部36…が設けられており、各挿通孔351 〜354 間の溝部36に対応する位置でボビン34には、カバー30側に臨む接続面46をそれぞれ形成する第1〜第4凹部381 ,382 ,383 ,384 が、カバー30側および半径方向内方側を開放するようにしてそれぞれ設けられる。
【0014】
ボビン34の第1、第2および第4凹部381 ,382 ,384 に対応する部分には、ボビン34の中心からの距離を同一とした位置でボビン34の周方向に等間隔をあけて配置される複数たとえば3個の第1嵌合孔391 …と、ボビン34の中心からの距離を第1嵌合孔391 …よりも大とした位置でボビン34の周方向に沿って第1嵌合孔391 …と交互に配置される複数たとえば4個の第2嵌合孔392 …とが設けられる。これらの嵌合孔391 …,392 …は、ボビン34の半径方向と直交する方向に長い矩形状の横断面形状を有するように形成されるものであり、各嵌合孔391 …,392 …の一端はボビン34のロータヨーク27に臨む端面に開口され、また各嵌合孔391 …,392 …の他端は各凹部381 ,382 ,384 に臨むようにして接続面46…に開口される。
【0015】
このようなステータコア31において、第1挿通孔351 の近傍に設定される基準位置PBを1番目として図2の反時計方向(図3の時計方向)に24番目までの突極33,33…には、8個ずつのU相用メインコイル40U…、V相用メインコイル40V…およびW相用メインコイル40W…がボビン34を介してそれぞれ巻装され、25番目から27番目までの各突極33…には、チャージコイル41、サブコイル42およびDCコイル43がボビン34を介してそれぞれ巻装され、相互に隣接するコイル40U,40V,40W,41,42,43間には外方に開いたV字状の空隙が形成される
【0016】
各U相用メインコイル40U…は、ステータコア31の周方向に沿って2個の突極33,33に対応する部分を相互間に介在させた突極33,33…にボビン34を介して巻装され、各V相用メインコイル40V…は、図2の反時計方向で各U相用メインコイル40U…に隣接する位置の突極33,33…にボビン34を介して巻装され、各W相用メインコイル40W…は、U相用メインコイル40UおよびV相用メインコイル40V間の突極33,33…にボビン34を介して巻装される。
【0017】
図5において、直列に接続される8個のU相用メインコイル40U…の一端すなわち基準位置PBに配置されるU相用メインコイル40Uの一端は第2コイル側端子452 に接続され、直列に接続される8個のV相用メインコイル40V…の一端すなわち基準位置PBから2番目のV相用メインコイル40Vの一端は第1コイル側端子451 に接続され、直列に接続される8個のW相用メインコイル40W…の一端すなわち基準位置PBから3番目のW相用メインコイル40Wの一端は第2コイル側端子452 に接続され、DCコイル43の両端は第1および第2コイル側端子451 ,452 に接続される。
【0018】
このように直列に接続された各メインコイル40U…,40V…,40Wの一端ならびにDCコイル43の両端に接続される第1および第2コイル側端子451 …,452 …は、第1および第2挿通孔351 ,352 間の第1凹部381 に対応する部分でボビン34に固定されるものであり、2つの第1コイル側端子451 …は第1挿通孔351 寄りの第1嵌合孔391 …に嵌入、固定される導電金属製の支持板48…の一端に一体に連結され、また3つの第2コイル側端子452 も第1挿通孔351 寄りの第2嵌合孔392 …に嵌入、固定される支持板48…の一端に一体に連結される。
【0019】
直列に接続される8個のU相用メインコイル40U…の他端すなわち基準位置PBから22番目に配置されるU相用メインコイル40Uの他端、直列に接続される8個のV相用メインコイル40V…の他端すなわち基準位置PBから23番目のV相用メインコイル40Vの他端、ならびに直列に接続される8個のW相用メインコイル40W…の他端すなわち基準位置PBから24番目のW相用メインコイル40Wの他端は、中性点として第1コイル側端子451 に共通に接続され、チャージコイル41の両端およびサブコイル42の両端は第1および第2コイル側端子451 ,452 にそれぞれ接続される。
【0020】
このような各メインコイル40U…,40V…,40W…の中性点ならびにチャージコイル41およびサブコイル42の両端に接続される第1および第2コイル側端子451 …,452 …は、第4および第1挿通孔354 ,351 間の第4凹部384 に対応する部分でボビン34に固定されるものであり、第1コイル側端子451 …は第1嵌合孔391 …にそれぞれ嵌入、固定される支持板48…の一端に一体に連結され、また第2コイル側端子452 は第2嵌合孔392 …にそれぞれ嵌入、固定される支持板48の一端に一体に連結される。
【0021】
ところで、本実施例では、第3および第4挿通孔353 ,354 間の第2凹部382 に対応して配置される第1および第2嵌合孔391 …,392 …の全部、ならびに第1および第4凹部381 ,384 に対応して配置される第1および第2嵌合孔391 …,392 …の一部には、第1および第2コイル側端子451 ,452 と一体である支持板48…が嵌入されてはいないが、各嵌合孔391 …,392 …への支持板48…の嵌入は機種に応じて適宜選択されるものであり、他の機種においては、全ての嵌合孔391 …,392 …に支持板48…がそれぞれ嵌入されることもあり得る。
【0022】
図6ないし図8において、第1コイル側端子451 は、第1嵌合孔391 に嵌入、固定される支持板48の一端に一端が直角に連なる平板状の連結板部49と、該連結板部49の他端に連なる接続端子部50とを一体に有して導電性金属から成るものであり、ステータ21への組付前にあっては、接続端子部50は支持板48とは反対方向すなわち第1嵌合孔391 への支持板48の嵌入時にはボビン34から離反する方向で連結板部49に直角に連なるものであるが、該連結板部49に重なるように接続端子部50を折曲げることが可能である。
【0023】
支持板48は、第1嵌合孔391 に嵌入、固定されるべく導電性金属により平板状に形成されるものであり、連結板部49を図4で示すようにボビン34に当接させるまで第1嵌合孔391 に嵌入したときに、接続面46から他端が突出するような長さに設定される。しかも支持板48の両側には、第1嵌合孔391 の両側内面に食込んで支持板48が第1嵌合孔391 から離脱することを阻止するための爪51がそれぞれ設けられる。
【0024】
連結板部49は、支持板48が第1嵌合孔391 に嵌入されたときにボビン34のロータヨーク27側の端面に当接してステータ21の半径方向外方側に延びるようにして、支持板48の他端に直角に連設される。
【0025】
接続端子部50は、平板を丸めるように加工して円筒状に形成されるものであり、この接続端子部50には、各コイル40U,40V,40W,41,42,43から延びる口出し線52…(図2および図4参照)を挿通可能である。しかも接続端子部50に挿通された口出し線52は、該接続端子部50の他端部すなわち先端部にヒュージングにより接続されるものである。この接続端子部50の中間部には、ステータ21の外方側に臨む窓53が切欠くようにして設けられており、該窓53を相互間に挟むようにして、先端側の接続部分50aと、該接続部分50a側に口出し線52を挿通せしめる連結板部49側の導入部分50bとが接続端子部50に形成される。
【0026】
第2嵌合孔392 に嵌入される支持板48と一端である第2コイル側端子452 は、基本的には上記第1コイル側端子451 と同一形状を有するものであるが、第1コイル側端子451 における連結板部49の長さL1 が第2コイル側端子452 における連結板部49の長さL1 よりも大きく設定される。而して第1コイル側端子451 における連結板部49の長さL1 と第2コイル側端子452 における連結板部49の長さL1 との差は、ボビン34の半径方向に沿う第1および第2嵌合孔391 ,392 間の距離L2 (図4参照)に等しい値であり、そのように設定されることにより、第1嵌合孔391 に支持板48を嵌入した第1コイル側端子451 の接続端子部50と、第2嵌合孔392 に支持板48を嵌入した第2コイル側端子452 の接続端子部50とは、ボビン34の中心から等しい位置に配置されることになる。
【0027】
またボビン34には、第1および第2コイル側端子451 …,452 …の接続端子部50を折曲げる際に、それらの接続端子部50をガイドするリブ56が、各嵌合孔391 ,392 相互間でボビン34の半径方向に沿って延びるようにして一体に突設される。
【0028】
第1および第2コイル側端子451 ,451 のステータ21への組付け、ならびに第1および第2コイル側端子451 ,452 への口出し線52の接続にあたっては、導入部分50bおよび接続部分50aに口出し線52を挿通せしめた状態で、支持板48を第1および第2嵌合孔391 ,392 に圧入し、口出し線52をヒュージングにより接続部分50aに接続し、その後で、接続端子部50を連結板部49上に重なるように折曲げればよい。
【0029】
また各U相用メインコイル40U…同士、各V相用メインコイル40V…同士、ならびに各W相用メインコイル40W…同士を相互に接続する渡り線55…は、ロータヨーク27側において、図3および図4で示すように、ボビン34に巻付けられるように配置される。
【0030】
各嵌合孔391 …,392 …に嵌入、固定される支持板48…の他端は、第1および第2挿通孔351 ,352 間の第1凹部381 、ならびに第1および第4挿通孔351 ,354 間の第4凹部384 における接続面46…からそれぞれ突出されるものであり、各支持板48…の各接続面46…からの突出端は雄型端子58…として機能する。
【0031】
図5に注目して、各雄型端子58…には雌型端子59…がそれぞれ電気的に接続されるものであり、各メインコイル40U…,40V…,40W…の一端に連なる雄型端子58…に接続される雌型端子59…は、第1外部導線601 …の一端部にそれぞれ結合され、DCコイル43の両端に連なる雄型端子58…に接続される雌型端子59…は第1外部導線601 よりも小径である第2外部導線602 …の一端部にそれぞれ結合される。またチャージコイル41およびサブコイル42の両端にそれぞれ連なる雄型端子58…に接続される雌型端子59…は、第2外部導線602 …の一端部にそれぞれ結合され、各メインコイル40U…,40V…,40W…の中性点に連なる雄型端子58に接続される雌型端子59は、第3外部導線603 の一端部に接続される。
【0032】
各メインコイル40U…,40V…,40W…の一端およびDCコイル43の両端にそれぞれ対応した5つの雌型端子59…は、第1および第2挿通孔351 ,352 間の第1凹部381 に嵌合されるホルダ611 に保持され、チャージコイル41およびサブコイル42の両端、ならびに各メインコイル40U…,40V…,40W…の中性点にそれぞれ対応した4つの雌型端子59…は、第1および第4挿通孔351 ,354 間の第4凹部384 に嵌合されるホルダ612 に保持される。
【0033】
図9および図10において、ホルダ611 ,612 は、ポリアミド等の合成樹脂により、各凹部381 ,383 に嵌合すべく円弧状の同一形状に形成されるものであり、凹部381 ,383 への嵌合状態で、ホルダ611 ,612 の内側面はステータ21の内周面にほぼ面一に連なる。
【0034】
各ホルダ611 ,612 の外側面には、凹部381 ,383 に臨む4つの第2嵌合孔392 …に対応する4つの挿通溝62…が両端を開放するようにして設けられ、該ホルダ611 ,612 の内側面には、凹部381 ,383 に臨む3つの第1嵌合孔391 …に対応する3つの挿通溝62…が両端を開放するようにして設けられる。
【0035】
凹部381 ,383 への嵌合状態でホルダ611 ,612 の一端面61aは、凹部381 ,383 の接続面46に近接、対向するのであるが、該ホルダ611 ,612 の一端面61aには、各挿通溝62…に個別に通じる7つの収容凹部63…が設けられており、各収容凹部63…および各挿通溝62…間には、前記接続面46側に臨む段部64…がそれぞれ形成される。
【0036】
図11ないし図13において、雌型端子59は、第1かしめ結合部59aと、第1かしめ結合部59aに連なる第2かしめ結合部59bと、雄型端子58を嵌合させて電気的な接続を得るようにして第2かしめ結合部59bに連なる受容部59cとを有して導電性金属により形成される。而して第1かしめ結合部59aは、第1〜第3外部導線601 …,602 …,603 における樹脂被覆部の一端にかしめ結合されるものであり、第2かしめ結合部59bは、第1〜第3外部導線601 …,602 …,603 における樹脂被覆部の一端から引き出された芯線にかしめ結合されるものである。また受容部59cは、第1〜第3外部導線601 …,602 …,603 から両側に張出すように形成されるものであり、該受容部59cは、ホルダ611 ,612 の収容凹部63に収容可能である。
【0037】
一方、各ホルダ611 ,612 における挿通溝62は、第1〜第3外部導線601 …,602 …,603 をホルダ611 ,612 の内側方および外側方から挿入し得るように形成されており、挿通溝62および収容凹部63間の段部64には、収容凹部63に収容された前記受容部59cを当接することができる。
【0038】
ところで、ステータ21が備える複数の突極33…のうち、基準位置PBから図2の反時計方向に27番目の突極33にはボビン33を介してDCコイル43が巻装されており、該DCコイル43には直流電流が流れるのに対し、DCコイル43の両側のU相用メインコイル40Uおよびサブコイル42には交流電流が流れるものであり、DCコイル43と、ステータコア31の周方向に沿って該DCコイル43に隣接するU相用メインコイル40Uおよびサブコイル42との間の絶縁能を高めるために、図14で示すように、基準位置PBから図2の反時計方向に27番目である特定の突極33に対応したDCコイル43、前記特定の突極33にステータコア31の周方向で隣接した突極33,33にそれぞれ対応したU相用メインコイル40Uおよびサブコイル42との間に絶縁部材66がワニス含浸前に挿入される。
【0039】
図15および図16を併せて参照して、絶縁部材66は、たとえばノーメックス(商品名)で知られる矩形シート状の絶縁紙を山形に折って、3つの屈曲部を有したW字形の横断面形状となるように形成されるものであり、該絶縁部材66,66が、ワニス含浸前の状態で、DCコイル43およびU相用メインコイル40Uとの間、ならびにDCコイル43およびサブコイル42との間に、それらの絶縁部材66,66の両側の各コイル43,40U;43,42の一方に前記3つの屈曲部のうち中央部の1つおよび両端部を弾発的に接触せしめるとともに他方の前記コイルに残余の2つの屈曲部を弾発的に接触せしめつつ挿入される。
【0040】
次にこの実施例の作用について説明すると、ボビン34の各嵌合孔391 …,392 …に嵌入、固定される支持板48…と一体である第1および第2コイル側端子451 …,452 …において、連結板部49に直角に連なった状態での接続端子部50に各コイル40U,40V,40W,41,42,43からの口出し線52を挿通せしめた状態で、ボビン34から比較的離れた位置に在る接続部分50aにヒュージングにより口出し線52を接続するようにしているので、各コイル40U,40V,40W,41〜43がマグネットワイヤから成るものであっても、絶縁皮膜を剥離する作業を不要としてコイル40U,40V,40W,41〜43の各コイル側端子451 ,452 への接続を容易に行なうことができ、したがって接続作業が容易となり、作業工数を低減することもできる。
【0041】
また口出し線52の接続後に接続端子部50を連結板部49に重なるように折曲げることができることにより、接続端子部50のステータ21からの突出を回避し、各コイル側端子451 …,452 …の配置スペースを小さくすることができる。
【0042】
しかもボビン34の周方向に沿って隣接する第1および第2コイル側端子451 …,452 …がボビン34の半径方向に沿って交互にずれた位置でボビン34に固定されることにより、複数のコイル側端子451 …,452 …をコンパクトに纏めてボビン34に固定するようにして、ステータ21の小型化を図ることができる。それに加えて第1および第2コイル側端子451 …,452 …が、ボビン34の中心からの距離を相互に異ならせた位置でボビン34に固定され、両コイル側端子451 …,452 …の各接続端子部50…は、連結板部49…に直角に連なった状態でボビン34の中心位置から同一距離に配置される。したがって口出し線52の接続端子部50への接続後に各接続端子部50を折曲げるときには、ボビン34の中心からの距離を同一とした位置で各接続端子部50に折曲げ方向の押圧力を作用せしめればよいので、各接続端子部50に折曲げ方向の押圧力を作用せしめる押圧手段を、ボビン34の半径方向に移動させる必要がなく、該押圧手段をボビン34の周方向に沿って順次移動させればよいので、押圧手段を移動させる機構を単純化することができる。
【0043】
接続端子部50には、口出し線52をヒュージング接続するための接続部分50aと、口出し線52を挿通せしめる導入部分50bとが、ステータ21の外方側に臨む窓53を挟んで形成されているので、接続端子部50の折曲げ時に、導入部分50bを押すようにし、口出し線52が接続された状態にある接続部分50aに折曲げ時のストレスがかからないようにし、接続端子部50および口出し線52の接続を折曲げにかかわらず確実に維持することができる。
【0044】
またボビン34には、ボビン34の半径方向に沿って延びて各嵌合孔391 …,392 …相互間に配置される複数のリブ56…が突設されており、それらのリブ56…は、各嵌合孔391 …,392 …に支持板48をそれぞれ嵌入せしめた各コイル側端子451 …,452 …の接続端子部50を折曲げるときのガイドとして機能するので、ボビン34の周方向に隣接するコイル側端子451 …,452 …が相互に接触することを確実に避けることができる。したがって、コイル側端子451 …,452 …相互間に大きな間隔をあけることを不要とし、コイル側端子451 …,452 …の配置に起因してステータ21が大型化することを防止することができる。
【0045】
またボビン34には、各コイル40U〜40W,41〜43にそれぞれ連なる雄型端子58…が接続面46から突出するようにして固定され、それらの雄型端子58…を嵌合して電気的に接続することを可能とした雌型端子59…が外部導線601 …,602 …,603 …に結合されるのであるが、各外部導線601 …,602 …,603 …に結合された雌型端子59…は、ホルダ611 ,612 に保持される。
【0046】
而して合成樹脂製のホルダ611 ,612 の内、外側面には、外部導線601 …,602 …,603 …を側方から挿入することを可能とした挿通溝62…が両端を開放して設けられ、ボビン34の接続面46に対向するホルダ611 ,612 の一端面61aには、各挿通溝62…に個別に通じる収容凹部63…が設けられ、各収容凹部63…および各挿通溝62…間にはボビン34の接続面46側に臨む段部64…がそれぞれ形成される。しかも雌型端子59は、雄型端子58を嵌合して電気的に接続することを可能とした受容部59cを有するものであり、該受容部59cは、前記段部64に当接することを可能として収容凹部63に収容される。
【0047】
したがって、各挿通溝62…に、各外部導線601 …,602 …,603 …をボビン34の内、外両側方から挿入し、それらの外部導線601 …,602 …,603 …に引張り力を作用せしめると、雌型端子59…の受容部59c…が、段部64…で受けられるようにして収容凹部63…にそれぞれ収容されることになり、601 …,602 …,603 …に結合された各雌型端子59…を、外部導線601 …,602 …,603 …の長さにかかわらずホルダ611 ,612 に容易に装着することができる。
【0048】
このように各雌型端子59…がホルダ611 ,612 に装着された状態で、ホルダ611 ,612 にその一端面61aがボビン34の接続面46に近接する方向の力を加えると、各雌型端子59…の受容部59c…には、それらの受容部59c…に各雄型端子58…を嵌合させる方向の力が同時に作用することになり、複数の雄型端子58…に各外部導線601 …,602 …,603 …が同時に接続されるので、接続作業が容易となる。しかもホルダ611 ,612 をステータ21側に1度押すだけであるので作業者の疲労も少ない。
【0049】
またホルダ611 ,612 は、複数の挿通溝62…と、それらの挿通溝62…に段部64…を介して連なる複数の収容凹部63…が形成されるだけの単純形状のものであればよく、ホルダ611 ,612 を成形するための型構造も単純化されることになる。
【0050】
なお、ホルダ611 ,612 は、ボビン34の凹部381 ,383 に嵌合されるだけであり、ボビン34に固定されるものではないが、凹部381 ,383 への嵌合によるボビン34との間の摩擦力により各凹部381 ,383 への嵌合状態が保持される。また前記摩擦力が弱く、ホルダ611 ,613 が凹部381 ,383 から離脱しようとしても、ホルダ611 ,612 が配置される側でステータ21に対向するようにして固定配置されているので、凹部381 ,383 から離脱する方向へのホルダ611 ,612 の移動はカバー30により阻止されることになる。
【0051】
しかも絶縁紙から成る絶縁部材66,66がDCコイル43およびU相用メインコイル40U間、ならびにDCコイル43およびサブコイル42間にワニス含浸前にそれぞれ挿入されるので、相互に隣接するコイル43,40U;43,42間の絶縁耐力を向上することができる。しかも絶縁部材66は、3つの屈曲部を有したW字形の横断面形状となるように絶縁紙を山形に折って形成されており、両側の隣接コイル43,40U;43,42間に、それらの隣接コイルの一方に前記3つの屈曲部のうち中央部の1つおよび両端部を弾発的に接触せしめるとともに隣接コイルの他方に残余の2つの屈曲部を弾発的に接触せしめつつ挿入されるものであるので、ワニス含浸前およびワニス含浸処理実行時に絶縁部材66,66が隣接コイル43,40U;43,42間に確実に保持される。したがって、絶縁紙から成る絶縁部材66,66を隣接コイル43,40U;43,42間に挿入するだけの簡単な構造で隣接コイル43,40U;43,42間の絶縁耐力を確実に向上することができる。
【0052】
以上、本発明の実施例を詳述したが、本発明は上記実施例に限定されるものではなく、特許請求の範囲に記載された本発明を逸脱することなく種々の設計変更を行なうことが可能である。
【0053】
【発明の効果】
以上のように本発明によれば、絶縁紙から成る絶縁部材を隣接コイル間に挿入するだけの簡単な構造で隣接コイル間の絶縁耐力を確実に向上することができる。
【図面の簡単な説明】
【図1】アウタロータ型多極発電機の縦断面図であって図2の1−1線断面図である。
【図2】図1の2−2線矢視方向から見たステータの平面図である。
【図3】図1の3−3線矢視方向から見たステータの背面図である。
【図4】ホルダ装着状態での図2の4−4線に沿う拡大断面図である。
【図5】コイルの接続回路図である。
【図6】コイル側端子、支持板および雄型端子の斜視図である。
【図7】図6の7矢視図である。
【図8】図7の8矢視図である。
【図9】ホルダの側面図である。
【図10】図9の10矢視図である。
【図11】雌型端子および外部導線が装着された状態でのホルダの側面図である。
【図12】図11の12矢視図である。
【図13】図12の13−13線断面図である。
【図14】絶縁部材を装着する状態を示す斜視図である。
【図15】絶縁部材の側面図である。
【図16】図15の16矢視図である。
【符号の説明】
21・・・ステータ
31・・・ステータコア
32・・・コア基部
33・・・突極
34・・・ボビン
40U,40V,40W,41,42,43・・・コイル
66・・・絶縁部材
[0001]
BACKGROUND OF THE INVENTION
The present invention is ring-shaped Connected to A stator core formed by projecting a plurality of salient poles on the outer periphery of the core base with equal intervals therebetween, a bobbin covering the stator core, and a portion corresponding to each salient pole wound around the bobbin With coil A V-shaped air gap that opens outward is formed between adjacent coils. The present invention relates to an insulation structure with improved insulation between adjacent coils in an outer rotor type multipolar generator stator.
[0002]
[Prior art]
Conventionally, such a stator is already known from Japanese Patent Application Laid-Open No. 9-93849, etc., in which V-shaped gaps that are opened outward are left between the coils corresponding to the respective salient poles. is there.
[0003]
[Problems to be solved by the invention]
By the way, when it is desired to improve the dielectric strength between the coils wound around the salient poles adjacent to each other via the bobbin, it may be possible to insert an insulating member into the gap generated between the coils. Since the gap is formed in a V shape that opens outward, the insulating member falls off simply by inserting a sheet-like insulating member between adjacent coils. Note that if the stator is varnish impregnated with the insulating member inserted between adjacent coils, the insulating member will not fall off, but the insulating member will remain in the gap during the varnish impregnation process. If it moves, the sufficient dielectric strength cannot be obtained.
[0004]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide an insulating structure that can improve the dielectric strength between adjacent coils with a simple structure in a stator for an outer rotor type multipolar generator. And
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a ring shape. Connected to A stator core formed by projecting a plurality of salient poles on the outer periphery of the core base with equal intervals therebetween, a bobbin covering the stator core, and a portion corresponding to each salient pole wound around the bobbin With coil A V-shaped air gap that opens outward is formed between adjacent coils. In In the state before impregnating the varnish, Between a coil corresponding to a specific salient pole among the salient poles and a coil corresponding to a salient pole adjacent to the specific salient pole along the circumferential direction of the stator core, To have a W-shaped cross-sectional shape with three bends An insulating member formed by folding an insulating paper into a chevron is formed on the coil on both sides of the insulating member. One of the three bent portions is elastically brought into contact with one end portion and both end portions, and the remaining two bent portions are elastically contacted with the other coil. Contact Cough It is characterized by being inserted.
[0006]
According to such a configuration, since the insulating member made of insulating paper is inserted between the adjacent coils, the dielectric strength between the adjacent coils can be improved. In addition, the insulating member is formed by folding the insulating paper into a chevron shape, and is inserted between adjacent coils while elastically contacting the adjacent coils on both sides. The insulating member is securely held between the adjacent coils, and the dielectric strength between the adjacent coils can be reliably improved with a simple structure.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.
[0008]
1 to 16 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of an outer rotor type multipolar generator, taken along line 1-1 of FIG. 2, and FIG. FIG. 3 is a plan view of the stator as viewed from the direction of arrows 2-2, FIG. 3 is a rear view of the stator as viewed from the direction of arrows 3-3 in FIG. 1, and FIG. 4 is 4-4 of FIG. FIG. 5 is a connection circuit diagram of the coil, FIG. 6 is a perspective view of the coil side terminal, the support plate, and the male terminal, FIG. 7 is a view taken along arrow 7 in FIG. 6, and FIG. FIG. 9 is a side view of the holder, FIG. 10 is a side view of the holder in FIG. 9, FIG. 11 is a side view of the holder with the female terminals and external conductors attached, and FIG. FIG. 13 is a sectional view taken along line 13-13 of FIG. 12, FIG. 14 is a perspective view showing a state where the insulating member is mounted, FIG. 15 is a side view of the insulating member, and FIG. 6 is an arrow view.
[0009]
First, in FIG. 1, a stator 21 of this outer rotor type multipolar generator is coupled to a sleeve 22 connected to an engine body (not shown) by a plurality of bolts 23, for example, four bolts 23. 21 is coaxially disposed in the sleeve 22 so as to penetrate the shaft 21, and a bearing 25 and a seal member 26 are provided between the sleeve 22 and the crankshaft 24. A rotor yoke 27 formed in a bowl shape so as to cover the stator 21 is coaxially fastened to the end of the crankshaft 24, and a slight air gap is formed between the rotor yoke 27 and the stator 21. In this way, a magnet 29 that coaxially surrounds the stator 21 is fixed. Further, the cover 30 is fixed to the sleeve 22 so as to cover the open end side of the rotor yoke 27.
[0010]
The stator 21 includes a stator core 31 composed of a plurality of core plates stacked on each other, and the stator core 31 has a ring shape. Connected to On the outer periphery of the core base 32, a plurality of, for example, 27 salient poles 33, 33... Formed in a substantially T-shape are projected at equal intervals.
[0011]
The plurality of core plates constituting the stator core 31 are partially covered with a synthetic resin bobbin 34 across the both ends in the laminating direction, so that the laminated state is maintained and the stator core 31 is constituted. The bobbin 34 is formed so as to cover the stator core 31 across both ends in the axial direction so as to expose the tip ends of the salient poles 33, 33... And a part of the inner peripheral surface of the core base 32.
[0012]
Referring to FIGS. 2 and 3 in combination, the first to fourth insertion holes 35 are provided at a plurality of, for example, four places at equal intervals in the circumferential direction of the core base 32 and the bobbin 34. 1 , 35 2 , 35 Three , 35 Four Are provided and their insertion holes 35 are provided. 1 ~ 35 Four Are inserted through bolts 23 for fastening the stator 21 to the sleeve 22.
[0013]
Further, referring also to FIG. 4, first to fourth insertion holes 35 are formed in the inner periphery of the core base portion 32 of the stator core 31. 1 ~ 35 Four Four groove portions 36... Extending between both axial ends of the core base portion 32 are provided between the respective insertion holes 35. 1 ~ 35 Four The first to fourth recesses 38 are respectively formed on the bobbin 34 at positions corresponding to the groove portions 36 between them to form connection surfaces 46 facing the cover 30. 1 , 38 2 , 38 Three , 38 Four Are provided so as to open the cover 30 side and the radially inner side.
[0014]
First, second and fourth recesses 38 of the bobbin 34 1 , 38 2 , 38 Four In the portion corresponding to, a plurality of, for example, three first fitting holes 39 arranged at equal intervals in the circumferential direction of the bobbin 34 at the same distance from the center of the bobbin 34. 1 ... and the distance from the center of the bobbin 34 to the first fitting hole 39 1 ... the first fitting hole 39 along the circumferential direction of the bobbin 34 at a position larger than 1 A plurality of, for example, four second fitting holes 39 that are alternately arranged. 2 ... are provided. These fitting holes 39 1 ..., 39 2 Are formed so as to have a rectangular cross-sectional shape that is long in a direction orthogonal to the radial direction of the bobbin 34, and each fitting hole 39. 1 ..., 39 2 One end of the bobbin 34 is opened at the end face of the bobbin 34 facing the rotor yoke 27, and each fitting hole 39 is open. 1 ..., 39 2 The other end of each recess 38 1 , 38 2 , 38 Four It opens to the connection surface 46.
[0015]
In such a stator core 31, the first insertion hole 35 is provided. 1 .. Of the U-phase main coils 40U on the salient poles 33, 33... In the counterclockwise direction of FIG. 2 (clockwise direction of FIG. 3) up to the 24th. ..., a V-phase main coil 40V ... and a W-phase main coil 40W ... are wound around the bobbin 34, respectively, and each of the 25th to 27th salient poles 33 ... has a charge coil 41, a subcoil 42 and DC coils 43 are wound around the bobbins 34, respectively. Between the coils 40U, 40V, 40W, 41, 42, and 43 adjacent to each other, a V-shaped gap that opens outward is formed. .
[0016]
Each U-phase main coil 40U is wound via bobbins 34 around salient poles 33, 33... Interposing portions corresponding to the two salient poles 33, 33 along the circumferential direction of the stator core 31. The V-phase main coils 40V are wound around the salient poles 33, 33 at positions adjacent to the U-phase main coils 40U in the counterclockwise direction of FIG. The W-phase main coils 40W are wound around the salient poles 33 between the U-phase main coil 40U and the V-phase main coil 40V via the bobbin 34.
[0017]
In FIG. 5, one end of eight U-phase main coils 40U... Connected in series, that is, one end of the U-phase main coil 40U arranged at the reference position PB is the second coil side terminal 45. 2 One end of eight V-phase main coils 40V ... connected in series, that is, one end of the second V-phase main coil 40V from the reference position PB is the first coil side terminal 45. 1 One end of eight W-phase main coils 40W... Connected in series, that is, one end of the third W-phase main coil 40W from the reference position PB is the second coil side terminal 45. 2 The both ends of the DC coil 43 are connected to the first and second coil side terminals 45. 1 , 45 2 Connected to.
[0018]
The first and second coil side terminals 45 connected to one end of each of the main coils 40U..., 40V. 1 ..., 45 2 ... are the first and second insertion holes 35. 1 , 35 2 First recess 38 between 1 Are fixed to the bobbin 34 at portions corresponding to the two first coil side terminals 45. 1 ... is the first insertion hole 35 1 Close first fitting hole 39 1 Are integrally connected to one end of a support plate 48 made of conductive metal that is fitted and fixed to the three, and three second coil side terminals 45. 2 The first insertion hole 35 1 Close second fitting hole 39 2 Are integrally connected to one end of a support plate 48 fitted and fixed to.
[0019]
The other end of the eight U-phase main coils 40U ... connected in series, that is, the other end of the U-phase main coil 40U arranged at the 22nd position from the reference position PB, the eight V-phases connected in series The other end of the main coils 40V, that is, the other end of the 23rd V-phase main coil 40V from the reference position PB, and the other ends of the eight W-phase main coils 40W connected in series, that is, 24 from the reference position PB. The other end of the W-th W-phase main coil 40W is the first coil side terminal 45 as a neutral point. 1 Both ends of the charge coil 41 and both ends of the subcoil 42 are connected to the first and second coil side terminals 45. 1 , 45 2 Connected to each.
[0020]
The neutral points of the main coils 40U, 40V, 40W, and the first and second coil side terminals 45 connected to both ends of the charge coil 41 and the subcoil 42, respectively. 1 ..., 45 2 ... are the fourth and first insertion holes 35. Four , 35 1 The first coil side terminal 45 is fixed to the bobbin 34 at a portion corresponding to the fourth concave portion 384 between them. 1 ... is the first fitting hole 39 1 Are integrally connected to one end of a support plate 48 fitted and fixed respectively to the second coil side terminal 45. 2 Is the second fitting hole 39 2 Are integrally connected to one end of a support plate 48 fitted and fixed respectively.
[0021]
By the way, in the present embodiment, the third and fourth insertion holes 35 are provided. Three , 35 Four Second recess 38 between 2 1st and 2nd fitting holes 39 arranged corresponding to 1 ..., 39 2 ..., and the first and fourth recesses 38 1 , 38 Four 1st and 2nd fitting holes 39 arranged corresponding to 1 ..., 39 2 ... a part of the first and second coil side terminals 45 1 , 45 2 Although the support plate 48 which is integral with each other is not fitted, each fitting hole 39 1 ..., 39 2 The insertion of the support plate 48 into the ... is appropriately selected according to the model. In other models, all the fitting holes 39 are inserted. 1 ..., 39 2 It is possible that the support plates 48 are respectively inserted into.
[0022]
6 to 8, the first coil side terminal 45 1 The first fitting hole 39 1 A plate-shaped connecting plate portion 49 whose one end is connected perpendicularly to one end of the support plate 48 that is fitted and fixed to the conductive plate, and a connecting terminal portion 50 that is connected to the other end of the connecting plate portion 49 are integrally formed. Before connecting to the stator 21, the connection terminal portion 50 is in the direction opposite to the support plate 48, that is, the first fitting hole 39. 1 When the support plate 48 is fitted to the connecting plate portion 49, the connecting terminal portion 50 can be bent so as to overlap the connecting plate portion 49.
[0023]
The support plate 48 has a first fitting hole 39. 1 The first fitting hole 39 is formed in a flat plate shape with a conductive metal so as to be fitted and fixed to the board until the connecting plate portion 49 is brought into contact with the bobbin 34 as shown in FIG. 1 It is set to such a length that the other end protrudes from the connection surface 46 when it is fitted into the connector. Moreover, the first fitting holes 39 are formed on both sides of the support plate 48. 1 The support plate 48 bites into the inner surfaces of both sides of the first fitting hole 39. 1 Each of the claws 51 is provided for preventing the detachment from the detachment.
[0024]
The connecting plate portion 49 has a support plate 48 with a first fitting hole 39. 1 Is fitted to the other end of the support plate 48 so as to contact the end surface of the bobbin 34 on the rotor yoke 27 side and extend outward in the radial direction of the stator 21.
[0025]
The connecting terminal portion 50 is formed into a cylindrical shape by rounding a flat plate, and the connecting terminal portion 50 has a lead wire 52 extending from each of the coils 40U, 40V, 40W, 41, 42, 43. ... (see FIG. 2 and FIG. 4) can be inserted. Moreover, the lead wire 52 inserted through the connection terminal portion 50 is connected to the other end portion, that is, the tip end portion of the connection terminal portion 50 by fusing. A window 53 facing the outer side of the stator 21 is provided in the intermediate portion of the connection terminal portion 50 so as to be cut out, and the connection portion 50a on the distal end side is sandwiched between the windows 53, The connecting terminal portion 50 is formed with an introduction portion 50b on the connecting plate portion 49 side through which the lead wire 52 is inserted into the connecting portion 50a side.
[0026]
Second fitting hole 39 2 The support plate 48 inserted into the second coil side terminal 45 as one end. 2 Is basically the first coil side terminal 45. 1 The first coil side terminal 45 has the same shape as the first coil side terminal 45. 1 The length L of the connecting plate portion 49 at 1 Is the second coil side terminal 45 2 The length L of the connecting plate portion 49 at 1 Is set larger than. Thus, the first coil side terminal 45 1 The length L of the connecting plate portion 49 at 1 And second coil side terminal 45 2 The length L of the connecting plate portion 49 at 1 Is different from the first and second fitting holes 39 along the radial direction of the bobbin 34. 1 , 39 2 Distance L between 2 (See FIG. 4), and the first fitting hole 39 is set as such. 1 The first coil side terminal 45 with the support plate 48 inserted in 1 Connection terminal portion 50 and the second fitting hole 39. 2 The second coil side terminal 45 with the support plate 48 inserted in 2 The connection terminal portion 50 is disposed at the same position from the center of the bobbin 34.
[0027]
Further, the bobbin 34 has first and second coil side terminals 45. 1 ..., 45 2 When the connection terminal portions 50 are bent, the ribs 56 that guide the connection terminal portions 50 are fitted into the respective fitting holes 39. 1 , 39 2 They project integrally with each other so as to extend along the radial direction of the bobbin 34.
[0028]
First and second coil side terminals 45 1 , 45 1 To the stator 21 and the first and second coil side terminals 45 1 , 45 2 When the lead wire 52 is connected to the support plate 48, the support plate 48 is inserted into the first and second fitting holes 39 in a state where the lead wire 52 is inserted into the introduction portion 50b and the connection portion 50a. 1 , 39 2 The lead wire 52 is connected to the connection portion 50a by fusing, and then the connection terminal portion 50 is bent so as to overlap the connecting plate portion 49.
[0029]
The U-phase main coils 40U, the V-phase main coils 40V, and the W-phase main coils 40W are connected to each other on the rotor yoke 27 side in FIG. As shown in FIG. 4, the bobbin 34 is disposed so as to be wound.
[0030]
Each fitting hole 39 1 ..., 39 2 The other end of the support plate 48 fitted and fixed to the first and second insertion holes 35 1 , 35 2 First recess 38 between 1 , And the first and fourth insertion holes 35 1 , 35 Four 4th recessed part 38 between Four The projecting ends of the support plates 48 from the connection surfaces 46 function as male terminals 58.
[0031]
Referring to FIG. 5, a female terminal 59 is electrically connected to each male terminal 58, and a male terminal connected to one end of each main coil 40U, 40V, 40W. The female terminals 59 connected to 58... Are connected to the first external conductors 60. 1 Are connected to male terminals 58 connected to both ends of the DC coil 43, respectively, and are connected to the first external conductor 60. 1 Second outer conductor 60 having a smaller diameter than 2 .. Are respectively coupled to one end portions of. The female terminals 59 connected to the male terminals 58 connected to both ends of the charge coil 41 and the subcoil 42 are respectively connected to the second external conductor 60. 2 The female terminal 59 connected to the male terminal 58 connected to one end of each of the main coils 40U, 40V,. Three Is connected to one end of the.
[0032]
Five female terminals 59 corresponding respectively to one end of each of the main coils 40U..., 40V. 1 , 35 2 First recess 38 between 1 Holder 61 fitted to 1 And four female terminals 59 corresponding to the neutral points of the charge coils 41 and the subcoil 42 and the main coils 40U, 40V, 40W, respectively, are connected to the first and fourth insertion holes 35. 1 , 35 Four 4th recessed part 38 between Four Holder 61 fitted to 2 Retained.
[0033]
9 and 10, the holder 61 1 , 61 2 Are made of synthetic resin such as polyamide and each recess 38. 1 , 38 Three Are formed in the same arc shape so as to be fitted in the recess 38. 1 , 38 Three In the fitted state to the holder 61 1 , 61 2 The inner surface of the stator is substantially flush with the inner peripheral surface of the stator 21.
[0034]
Each holder 61 1 , 61 2 On the outer surface of the recess 38 1 , 38 Three Four second fitting holes 39 facing the 2 Four insertion grooves 62 corresponding to ... are provided so as to open both ends, and the holder 61 1 , 61 2 On the inner side of the 1 , 38 Three Three first fitting holes 39 facing 1 Are provided so as to open both ends.
[0035]
Recess 38 1 , 38 Three Holder 61 in the fitted state 1 , 61 2 One end surface 61a of the concave portion 38 1 , 38 Three The holder 61 is close to and faces the connection surface 46 of the holder 61. 1 , 61 2 The one end surface 61a is provided with seven receiving recesses 63 that individually communicate with the insertion grooves 62, respectively, and faces the connecting surface 46 between the receiving recesses 63 and the insertion grooves 62. Steps 64 are formed respectively.
[0036]
11 to 13, the female terminal 59 is electrically connected by fitting the first caulking coupling portion 59a, the second caulking coupling portion 59b connected to the first caulking coupling portion 59a, and the male terminal 58. And a receiving portion 59c connected to the second caulking coupling portion 59b so as to be formed of a conductive metal. Thus, the first caulking joint 59a is connected to the first to third external conductors 60. 1 ..., 60 2 ..., 60 Three The second caulking coupling portion 59b is connected to one end of the resin coating portion in the first to third external conductors 60. 1 ..., 60 2 ..., 60 Three And is caulked and joined to the core wire drawn from one end of the resin coating portion. In addition, the receiving portion 59c has the first to third external conductors 60. 1 ..., 60 2 ..., 60 Three The receiving portion 59c is formed so as to project from both sides of the holder 61. 1 , 61 2 Can be housed in the housing recess 63.
[0037]
Meanwhile, each holder 61 1 , 61 2 The insertion groove 62 of the first to third external conductors 60 1 ..., 60 2 ..., 60 Three Holder 61 1 , 61 2 The receiving portion 59c accommodated in the accommodating recess 63 can be brought into contact with the step portion 64 between the insertion groove 62 and the accommodating recess 63.
[0038]
Incidentally, a DC coil 43 is wound around the 27th salient pole 33 in the counterclockwise direction of FIG. 2 from the reference position PB through the bobbin 33 among the plurality of salient poles 33. A DC current flows through the DC coil 43, whereas an AC current flows through the U-phase main coil 40 </ b> U and the subcoil 42 on both sides of the DC coil 43, along the circumferential direction of the DC coil 43 and the stator core 31. In order to enhance the insulation performance between the U-phase main coil 40U and the subcoil 42 adjacent to the DC coil 43, as shown in FIG. 14, it is the 27th counterclockwise from the reference position PB. The DC coil 43 corresponding to the specific salient pole 33, and the U-phase main coil corresponding respectively to the salient poles 33, 33 adjacent to the specific salient pole 33 in the circumferential direction of the stator core 31. Insulating member 66 between the 0U and sub-coils 42 Before varnish impregnation Inserted.
[0039]
Referring to FIGS. 15 and 16 together, the insulating member 66 is formed by folding a rectangular sheet of insulating paper known as Nomex (trade name) into a chevron shape, for example. To have a W-shaped cross section with three bends The insulating members 66 and 66 are formed. In the state before impregnating the varnish, Between the DC coil 43 and the U-phase main coil 40U, and between the DC coil 43 and the subcoil 42, the coils 43, 40U on both sides of the insulating members 66, 66; 43, 42 One of the three bent parts is elastically brought into contact with one of the three bent parts and both ends, and the remaining two bent parts are elastically applied to the other coil. Contact Cough Inserted.
[0040]
Next, the operation of this embodiment will be described. Each fitting hole 39 of the bobbin 34 1 ..., 39 2 The first and second coil-side terminals 45 that are integral with the support plate 48 that is fitted and fixed to. 1 ..., 45 2 , In the state where the lead wire 52 from each of the coils 40U, 40V, 40W, 41, 42, 43 is inserted into the connection terminal portion 50 in a state of being connected to the connecting plate portion 49 at a right angle, the bobbin 34 is relatively Since the lead wire 52 is connected to the connecting portion 50a located at a distant position by fusing, an insulating film is formed even if each of the coils 40U, 40V, 40W, 41 to 43 is made of a magnet wire. The coil side terminals 45 of the coils 40U, 40V, 40W, 41 to 43 are made unnecessary for the work of peeling. 1 , 45 2 Can be easily connected, so that the connection work is facilitated and the number of work steps can be reduced.
[0041]
Further, the connection terminal portion 50 can be bent so as to overlap the connecting plate portion 49 after the lead wire 52 is connected, so that the projection of the connection terminal portion 50 from the stator 21 can be avoided, and each coil side terminal 45. 1 ..., 45 2 The arrangement space can be reduced.
[0042]
Moreover, the first and second coil side terminals 45 that are adjacent along the circumferential direction of the bobbin 34. 1 ..., 45 2 Are fixed to the bobbin 34 at positions alternately displaced along the radial direction of the bobbin 34, whereby a plurality of coil side terminals 45 are provided. 1 ..., 45 2 .. Can be compactly assembled and fixed to the bobbin 34 to reduce the size of the stator 21. In addition, the first and second coil side terminals 45 1 ..., 45 2 Are fixed to the bobbin 34 at positions where the distances from the center of the bobbin 34 are different from each other. 1 ..., 45 2 The connecting terminal portions 50 are arranged at the same distance from the center position of the bobbin 34 in a state of being connected to the connecting plate portion 49 at a right angle. Therefore, when each connection terminal portion 50 is bent after the lead wire 52 is connected to the connection terminal portion 50, a pressing force in the bending direction acts on each connection terminal portion 50 at a position where the distance from the center of the bobbin 34 is the same. Therefore, it is not necessary to move the pressing means for applying a pressing force in the bending direction to each connection terminal portion 50 in the radial direction of the bobbin 34, and the pressing means are sequentially moved along the circumferential direction of the bobbin 34. Since it only needs to be moved, the mechanism for moving the pressing means can be simplified.
[0043]
In the connection terminal portion 50, a connection portion 50a for fusing connection of the lead wire 52 and an introduction portion 50b through which the lead wire 52 is inserted are formed with a window 53 facing the outer side of the stator 21 interposed therebetween. Therefore, when the connection terminal portion 50 is bent, the introduction portion 50b is pushed, and the connection portion 50a in the state where the lead wire 52 is connected is not subjected to stress at the time of bending. The connection of the line 52 can be reliably maintained regardless of the bending.
[0044]
Further, the bobbin 34 extends in the radial direction of the bobbin 34 and is fitted with each fitting hole 39. 1 ..., 39 2 ... a plurality of ribs 56 arranged between each other are projected, and the ribs 56 ... are fitted in the respective fitting holes 39. 1 ..., 39 2 Each coil-side terminal 45 having a support plate 48 fitted in each of the ... 1 ..., 45 2 Since it functions as a guide when the connection terminal portion 50 is bent, the coil side terminal 45 adjacent in the circumferential direction of the bobbin 34 is used. 1 ..., 45 2 ... can definitely avoid contact with each other. Therefore, the coil side terminal 45 1 ..., 45 2 ... It is not necessary to leave a large gap between each other, and the coil side terminal 45 1 ..., 45 2 It is possible to prevent the stator 21 from becoming large due to the arrangement of.
[0045]
Further, male terminals 58... Connected to the coils 40U to 40W and 41 to 43 are fixed to the bobbin 34 so as to protrude from the connection surface 46, and the male terminals 58. The female terminals 59 that can be connected to the external conductor 60 1 ..., 60 2 ..., 60 Three Are connected to each external conductor 60. 1 ..., 60 2 ..., 60 Three The female terminals 59 coupled to the holder 61 1 , 61 2 Retained.
[0046]
Thus, the holder 61 made of synthetic resin 1 , 61 2 The outer conductor 60 has an outer conductor 60 on the outer surface. 1 ..., 60 2 ..., 60 Three Are inserted through grooves 62... Which are open at both ends, and the holder 61 faces the connection surface 46 of the bobbin 34. 1 , 61 2 The one end face 61a is provided with receiving recesses 63 individually communicating with the respective insertion grooves 62, and a stepped portion 64 facing the connection surface 46 side of the bobbin 34 is provided between the receiving recesses 63 and the insertion grooves 62. ... are formed respectively. Moreover, the female terminal 59 has a receiving portion 59c that can be electrically connected by fitting the male terminal 58, and the receiving portion 59c is in contact with the stepped portion 64. It is accommodated in the accommodating recess 63 as possible.
[0047]
Therefore, each external conducting wire 60 is inserted into each insertion groove 62. 1 ..., 60 2 ..., 60 Three ... are inserted from both sides of the bobbin 34, and their external conductors 60 are inserted. 1 ..., 60 2 ..., 60 Three When a tensile force is applied to..., The receiving portions 59c of the female terminals 59 are received in the receiving recesses 63 so as to be received by the step portions 64. 1 ..., 60 2 ..., 60 Three Each of the female terminals 59 coupled to the external conductor 60 1 ..., 60 2 ..., 60 Three Holder 61 regardless of length 1 , 61 2 Can be easily installed.
[0048]
In this way, each female terminal 59. 1 , 61 2 The holder 61 is attached to the holder 61. 1 , 61 2 When one end surface 61a is applied with a force in the direction in which the end surface 61a approaches the connection surface 46 of the bobbin 34, the receiving portions 59c of the respective female terminals 59 are provided with the male terminals 58 of the receiving portions 59c. The force in the fitting direction acts simultaneously, and the external conductors 60 are applied to the plurality of male terminals 58. 1 ..., 60 2 ..., 60 Three Since ... are connected at the same time, the connection work becomes easy. Moreover, the holder 61 1 , 61 2 Is only pressed once on the stator 21 side, so that the operator is less fatigued.
[0049]
Holder 61 1 , 61 2 May have a simple shape in which a plurality of insertion grooves 62... And a plurality of receiving recesses 63 that are continuous with the insertion grooves 62. 1 , 61 2 This also simplifies the mold structure for molding.
[0050]
Holder 61 1 , 61 2 Is the recess 38 of the bobbin 34. 1 , 38 Three Are not fixed to the bobbin 34, but the recess 38 1 , 38 Three Each recess 38 is caused by a frictional force with the bobbin 34 due to the fitting to the 1 , 38 Three The fitting state is maintained. The frictional force is weak and the holder 61 1 , 61 Three Is the recess 38 1 , 38 Three If you try to detach from the holder 61 1 , 61 2 Is disposed so as to be opposed to the stator 21 on the side on which the concave portion 38 is disposed. 1 , 38 Three Holder 61 in the direction to leave 1 , 61 2 Is prevented by the cover 30.
[0051]
Moreover, insulating members 66, 66 made of insulating paper are provided between the DC coil 43 and the U-phase main coil 40U, and between the DC coil 43 and the subcoil 42. Before varnish impregnation Since each is inserted, the dielectric strength between the coils 43 and 40U; 43 and 42 adjacent to each other can be improved. Moreover, the insulating member 66 is To have a W-shaped cross-sectional shape with three bends Insulated paper is folded in a chevron shape, next to both sides Close contact Il 43, 40U; between 43, 42 One of the adjacent coils is elastically brought into contact with one of the three bent parts and both ends, and the remaining two bent parts are elastically applied to the other of the adjacent coils. Contact Cough Therefore, the insulating members 66, 66 are securely held between the adjacent coils 43, 40U; 43, 42 before the varnish impregnation and when the varnish impregnation process is performed. Therefore, the insulating members 66 and 66 made of insulating paper are adjacent to each other with a simple structure in which the insulating coils 66 and 66 are inserted between the adjacent coils 43 and 40U; Close contact It is possible to reliably improve the dielectric strength between the wires 43 and 40U;
[0052]
Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.
[0053]
【The invention's effect】
As described above, according to the present invention, the dielectric strength between adjacent coils can be reliably improved with a simple structure in which an insulating member made of insulating paper is simply inserted between adjacent coils.
[Brief description of the drawings]
1 is a longitudinal sectional view of an outer rotor type multipolar generator, and is a sectional view taken along line 1-1 of FIG.
FIG. 2 is a plan view of the stator as seen from the direction of arrows 2-2 in FIG.
3 is a rear view of the stator as viewed from the direction of arrows 3-3 in FIG. 1. FIG.
4 is an enlarged cross-sectional view taken along line 4-4 of FIG. 2 in a state where the holder is mounted.
FIG. 5 is a connection circuit diagram of a coil.
FIG. 6 is a perspective view of a coil side terminal, a support plate, and a male terminal.
7 is a view taken in the direction of arrow 7 in FIG. 6;
8 is a view taken in the direction of arrow 8 in FIG.
FIG. 9 is a side view of the holder.
10 is a view taken in the direction of arrow 10 in FIG. 9;
FIG. 11 is a side view of the holder with a female terminal and an external conductor attached.
12 is a view taken in the direction of arrow 12 in FIG.
13 is a cross-sectional view taken along line 13-13 of FIG.
FIG. 14 is a perspective view showing a state in which an insulating member is mounted.
FIG. 15 is a side view of an insulating member.
16 is a view on arrow 16 in FIG. 15;
[Explanation of symbols]
21 ... Stator
31 ... Stator core
32 ... Core base
33 ... salient pole
34 ... Bobbin
40U, 40V, 40W, 41, 42, 43 ... Coil
66 ... Insulating member

Claims (1)

リング状に一体に連なるコア基部(32)の外周に複数の突極(33)が相互間に等間隔をあけて突設されて成るステータコア(31)と、該ステータコア(31)を被覆するボビン(34)と、前記各突極(33)に対応する部分で前記ボビン(34)に巻装されるコイル(40U,40V,40W,41,42,43)とを備え、相互に隣接するコイル(40U,40V,40W,41,42,43)間に外方に開いたV字状の空隙が形成されるアウタロータ型多極発電機用ステータにおいて、ワニス含浸前の状態で、前記各突極(33)のうち或る特定の突極(33)に対応したコイル(43)と、前記ステータコア(31)の周方向に沿って前記特定の突極(33)に隣接する突極(33)に対応したコイル(40U,42)との間に、3つの屈曲部を有したW字形の横断面形状となるように絶縁紙を山形に折って形成される絶縁部材(66)が、該絶縁部材(66)の両側の前記コイル(43,40U;43,42)の一方に前記3つの屈曲部のうち中央部の1つおよび両端部を弾発的に接触せしめるとともに他方の前記コイルに残余の2つの屈曲部を弾発的に接触せしめつつ挿入されることを特徴とするアウタロータ型多極発電機用ステータにおける絶縁構造。A stator core (31) having a plurality of salient poles (33) projecting from the outer periphery of a core base (32) integrally connected in a ring shape at equal intervals, and a bobbin covering the stator core (31) (34) and coils (40U, 40V, 40W, 41, 42, 43) wound around the bobbin (34) at portions corresponding to the salient poles (33), and coils adjacent to each other (40U, 40V, 40W, 41, 42, 43) In the stator for an outer rotor type multipolar generator in which a V-shaped air gap opened outward is formed , each salient pole is in a state before being impregnated with varnish. A coil (43) corresponding to a specific salient pole (33) of (33) and a salient pole (33) adjacent to the specific salient pole (33) along the circumferential direction of the stator core (31). Between coil (40U, 42) corresponding to , Insulating member formed by folding the insulating paper Yamagata so that the cross-sectional shape of W-shape having three bent portions (66), both sides of the coil of the insulating member (66) (43,40U ; 43, 42) while the three while the two bent portions of the one and the remainder of the both end portions to the other of said coils together allowed to elastically contact the central portion of the bent portion brought elastically contact with the An insulating structure in a stator for an outer rotor type multipolar generator, wherein the stator is inserted.
JP02538999A 1999-02-02 1999-02-02 Insulation structure in stator for outer rotor type multipolar generator Expired - Fee Related JP4015314B2 (en)

Priority Applications (2)

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JP02538999A JP4015314B2 (en) 1999-02-02 1999-02-02 Insulation structure in stator for outer rotor type multipolar generator
CA 2297534 CA2297534C (en) 1999-02-02 2000-02-01 Insulating structure in stator for outer rotor-type multi-pole generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02538999A JP4015314B2 (en) 1999-02-02 1999-02-02 Insulation structure in stator for outer rotor type multipolar generator

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JP2000224793A JP2000224793A (en) 2000-08-11
JP4015314B2 true JP4015314B2 (en) 2007-11-28

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WO2020021702A1 (en) * 2018-07-27 2020-01-30 三菱電機株式会社 Stator, electric motor, compressor and air conditioning apparatus

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