JP2004274819A

JP2004274819A - Method and apparatus for inserting coil

Info

Publication number: JP2004274819A
Application number: JP2003058806A
Authority: JP
Inventors: Masanori Iwamoto; 雅則岩本; Akira Nozaki; 明野崎; Yoshimasa Watanabe; 良政渡辺; Kazuyuki Yoda; 和之依田
Original assignee: Nissan Motor Co Ltd
Current assignee: Nissan Motor Co Ltd
Priority date: 2003-03-05
Filing date: 2003-03-05
Publication date: 2004-09-30
Anticipated expiration: 2023-03-05
Also published as: JP3969325B2

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a coil from being damaged by facilitating the insertion setting work of a coil winding jig into a jig body. <P>SOLUTION: The jig body 29 is disposed at each of the positions opposed to a plurality of slot 47 formed by extending the jig body 29 in the axial direction of the inner periphery of an annular stator core 23, and the coil winding jig 21, in which the coil 33 is wound, is inserted and set to a recess 31 of the jig body 29. The coil 33 disposed in the gap between the side face of the coil winding jig 21 and and the recess part 31 is inserted by the pusher set to the upper part of the gap between the side face of the coil winding jig 21 and the recess 31. The coil winding jig 21 has two jig units 25, 27, and winds the coil 33 in the state that an interval L is assured between the jig units 25 and 27. After the coil 33 is wound, the interval L is maintained by an interval maintaining member 35, and the jig unit 27 side of the coil winding jig 21 is inserted into the recess 31 in this state. Thereafter, the interval maintaining member 35 is removed, and the coil winding jig 21 is completely inserted into the recess 31. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
この発明は、環状のステータコアの内周部に軸線方向に向けて形成したスロットにコイルを挿入するコイル挿入方法および装置に関する。
【０００２】
【従来の技術】
従来のコイル挿入方法および装置としては、例えば特許文献１に記載のものがある。
【０００３】
【特許文献１】
特開２００２−３２５４０８号公報
【０００４】
これは、図８に示すような円筒形のステータコア１の内周面に形成した複数のスロット３に、その内周側から、コイル巻治具５に巻かれているコイル７を挿入するものである。
【０００５】
コイル７は、コイル用巻線を、複数のコイル巻治具５に連続して巻くことで形成してあり、このうち２つのコイル巻治具５を、ステータコア１内に配置する治具本体９の凹部１１に、図８中で紙面に直交する方向から挿入セットする。このとき、コイル巻治具５の図８中で左右の側面と凹部１１の側面との間には、コイル７が入り込む隙間１３が形成されており、この隙間１３の図８中で上部側に板状のブレード１５を挿入しておく。
【０００６】
そして、ブレード１５を隙間１３に沿って下方に移動させることで、コイル７を押し下げスロット３内に挿入する。コイル挿入後は、コイル７が外された２つのコイル巻治具５を治具本体９から取り外す。
【０００７】
２つのコイル７をそれぞれ対応するスロット３に挿入したら、次にコイル７を挿入するスロット３が、隙間１３に対応する位置となるようステータコア１を回転させて、コイル７が巻かれた別の２つのコイル巻治具５を、前記と同様にして治具本体９にセットし、ブレード１５によって２つのコイル７を挿入する。
【０００８】
以後同様にして、ステータコア１を順次回転させ、コイル７を２つずつ対応するスロット３に挿入していく。
【０００９】
ここで、上記したコイル巻治具５は、図９に斜視図として示すように、ステータコア１の軸線方向（図８中で紙面に直交するする方向）に沿って２つに分割される分割片となる治具体１５，１７で構成してある。
【００１０】
このようなコイル巻治具５にコイル７を巻き付ける際には、図９に示すように、２つの治具体１５，１７相互間に所定の間隔Ｌを形成した状態で行う。
【００１１】
間隔Ｌの確保は、例えば、相互の間隔Ｌが固定された２本の固定ピンを、各治具体１５，１７に対し、図９中で上下方向に貫通して取り付ければよい。コイル７を巻き付けた後は、上記２本の固定ピンを取り外すことで、治具体１５，１７相互の間隔ＬがＬ＝０となり、巻き付けられているコイル７の張力が低下した状態となる。
【００１２】
この状態で、コイル巻治具５を治具本体９の凹部１１に、図８中で紙面に直交する方向から挿入セットする。
【００１３】
【発明が解決しようとする課題】
ところで、上記した従来のものは、コイル７をコイル巻治具５に巻き付けた後、各治具体１５，１７相互の間隔Ｌの確保を解除することで、コイル７はその復元力により、図１０に示すように弛るむことになり、前記したブレード１５によるコイル７に対する押し下げ動作が容易となる。
【００１４】
ところが、コイル７が弛んだままのコイル巻治具５を治具本体９の凹部１１へ挿入セットする際には、図１０に示すコイル７の幅Ｗが、図８に示す凹部１１の幅より大きくなり、コイル巻治具５の凹部１１へ挿入力が増大し、挿入作業の長時間化やコイル７の損傷が発生することになる。
【００１５】
特に、コイル巻治具５，治具本体９の凹部１１およびステータコア１の寸法差は、機能上極めて微小の関係にあるため、上記した問題が発生しやすいものとなる。
【００１６】
そこで、この発明は、コイル巻治具の治具本体へのセット作業を容易にし、コイルの傷付を防止することを目的としている。
【００１７】
【課題を解決するための手段】
前記目的を達成するために、この発明は、環状のステータコアの内周部に沿って複数のスロットを、軸線方向に延長して形成し、このスロットに対向する位置に配置され、コイルが巻かれたコイル巻治具を、前記軸線方向の少なくとも一方の面に挿入用の開口を有する凹部に挿入セットして保持する治具本体を設け、この治具本体と前記コイル巻治具との間の隙間にセットするプッシャにより、前記隙間内に位置するコイルを押圧して前記スロットに挿入するコイル挿入方法において、前記コイル巻治具を、前記治具本体に保持させた状態で前記軸線方向に沿って２つに分割される分割片で構成し、これら両分割片相互間に所定の間隔を形成した状態で、両分割片に跨ってコイル用巻線を巻き付けてコイルを形成し、このコイルを巻き付けたコイル巻治具の両分割片相互間に間隔維持部材を配置して前記所定の間隔を維持し、この状態で前記コイル巻治具を、前記凹部に前記両分割片の一方側から挿入用の開口を経て挿入し、その後、前記間隔維持部材による前記所定の間隔の維持を解除するコイル挿入方法としてある。
【００１８】
【発明の効果】
この発明によれば、コイル巻治具を、治具本体の凹部にその挿入用の開口を経て、両分割片の一方側から挿入する状態では、間隔維持部材を両分割片相互間に配置して分割片相互間に所定の間隔を維持するので、このときコイルはコイル巻治具に所定の張力を有する状態で弛むことなく巻かれており、コイル巻治具の治具本体へのセット作業がコイルを傷付けることなく容易に行え、また挿入後は、間隔維持部材を外した状態とすることで、ステータコアのスロットへのコイルの挿入作業が容易なものとなる。
【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き説明する。
【００２０】
図１（ａ）は、この発明の第１の実施形態に係わる図２および図３に示すコイル挿入装置に使用するコイル巻治具２１に間隔維持部材３５をセットした状態を示す斜視図、同図（ｂ）は間隔維持部材３５の分解斜視図、同図（ｃ）は（ａ）のコイル巻治具２１を治具本体２９にセットし間隔維持部材３５を取り外した状態を示す動作説明図である。
【００２１】
このコイル巻治具２１は、前記図８〜図１０に示した従来のものと同様に、ステータコア２３にセットした状態で、このステータコア２３の軸線方向（図２中で左右方向）に沿って２つに分割される分割片としての治具体２５，２７で構成してある。
【００２２】
図２の拡大されたＡ矢視図である図４に示すように、コイル巻治具２１がセットされる治具本体２９の凹部３１は、治具本体２９の先端側（図４中で下部側）の左右方向の幅が、基端側（図４中で上部側）に比べて広く形成されている。これに対応してコイル巻治具２１も先端側が基端側に比べて幅広となっている。つまり、コイル巻治具２１のステータコア２３の軸線方向から見た形状は、図４中で下底が上底より長い台形となっている。
【００２３】
一方、コイル巻治具２１のステータコア２３の軸線方向（図４中で紙面に直交する方向）の幅については、図１でわかるように、上記とは逆に、治具本体２９の基端側（図４中で上部側）が、先端側（図４中で下部側）に比べて幅広に形成されている。つまり、コイル巻治具２１の図４中で左右方向から見た形状は、上底が下底より長い台形となっている。
【００２４】
コイル巻治具２１を上記したような形状とすることで、コイル３３を２つの治具体２５，２７に跨って巻き付けたときに、コイル３３の一巻分の長さを、コイル巻治具２１の先端側から基端側に沿って（図４中の下部側から上部側に沿って、一定とすることができる。
【００２５】
このコイル巻治具２１は、前記図９に示した従来のものと同様に、治具体２５，２７相互間に所定の間隔Ｌを確保した状態でコイル３３を巻き付ける。その巻き付け作業については後述する。上記した間隔Ｌの確保は、従来のものと同様に、例えば、治具体２５，２７相互の間隔Ｌが固定された２本の固定ピンを、各治具体２５，２７に対し、図１中で上下方向に貫通して取り付ければよい。
【００２６】
コイル３３を巻き付けた後は、上記した２本の固定ピンを取り外すとともに、図１（ｂ）に示す樹脂製の間隔維持部材３５をコイル巻治具２１にセットする。間隔維持部材３５は、コ字状の第１の部材３７と、棒状の第２の部材３９とで構成する。
【００２７】
第１の部材３７は、治具体２５，２７相互間のコイル３３の上下両側にそれぞれ挿入する一対の挿入部３７ａと、この一対の挿入部３７ａの一方の端部相互を連結する連結部３７ｃとを有し、一対の挿入部３７ａの他方の端部の側面には、係合凹部３７ｄを設けてある。一方第２の部材３９は、長手方向両端の側面に、上記した係合凹部３７ｄと係脱可能に連結する係合凹部３９ａを設ける。
【００２８】
また、第１の部材３７は、上記した台形状のコイル巻治具２１の形状に合わせ、下部の挿入部３７ｂを上部の挿入部３７ａより長く形成して連結部３７ｃをコイル巻治具２１の側面に沿って配置できるようにしてある。そして、第１の部材３７の挿入部３７ａ，３７ｂを治具体２５，２７相互間に挿入して連結部３７ｃをコイル巻治具２１の側面に沿って配置しコイル３３に接触する状態としたときに、係合凹部３７ｄがコイル巻治具２１の反対側の側面近傍に位置するよう、前記係合凹部３７ｄを設定している。
【００２９】
したがって、図１（ａ）に示すように、上記した係合凹部３７ｄに第２の部材３９の係合凹部３９ａを係合させた状態では、第２の部材３９は、コイル巻治具２１の第１の部材３７を挿入する側と反対側の側面に沿って配置されてコイル３３に接触する状態となる。
【００３０】
上記した第１の部材３７を、図１（ａ）に示すように、コイル巻治具２１の一方側から、挿入部３７ａを治具体２５，２７相互間に挿入し、他方側に突出した係合凹部３７ｄに、第２の部材３９の係合凹部３９ａを係合させることで、治具体２５，２７相互間に所定の間隔Ｌを確保する。
【００３１】
また、コイル巻治具２１の図１（ａ）中で上部側の端面２５ａ，２７ａには、ステータコア２３の軸線方向に沿って延長される凹溝２５ｂ，２７ｂを設ける一方、図１（ｃ）に示すように、凹部３１の底面２９ａには、凹溝２５ｂ，２７ｂに嵌合する位置決め用突起２９ｂをそれぞれ設ける。凹溝２５ｂ，２７ｂに位置決め用突起２９ｂが嵌合することで、コイル巻治具２１の図４中で左右両側の側壁と凹部３１との間に隙間４０が形成される。
【００３２】
次に、図２および図３を用いて、コイル挿入装置の全体を説明する。
【００３３】
前記図４に示した治具本体２９は、ベース４１上に立設された支柱４３の上端から、ステータコア２３側に向かって水平に突出する、平面視がＬ字形状のアーム部４５の先端に垂下されている。この治具本体２９は、前記図４に示したように、その凹部３１に、コイル３３を巻き付けてあるコイル巻治具２１が挿入セットされるとともに、コイル３３を押圧してステータコア２３のスロット４７に挿入するプッシャ４９を保持している。このプッシャ４９は、コイルスプリング５１により弾性的に支持され、かつ治具本体２９の凹部３１に挿入セットした状態のコイル巻治具２１と凹部３１との間の隙間４０の上端にセットしてある。
【００３４】
上記したプッシャ４９は、その上方に配置してある押圧具９３が下降することで、隙間５２内を押し下げられる。また、ステータコア１１は、ワークセット治具９５上にセットされて、リニアガイドレール９７上を治具本体２９に対して接近離反する方向に移動可能であり、接近した状態で治具本体２９が、図４に示すようにスロット４７に対向した状態となる。
【００３５】
上記したベース４１の図２中で左側には、巻線機５３を配置してある。この巻線機５３は、コイル巻治具２１が、２種の接続治具５５，５７によって順次接続された全部で１２個について、コイル３３を連続して巻き付けるものである。
【００３６】
上記したコイル巻治具２１は、図１（ａ）中で上下両端部を接続部として、接続治具５５，５７を介して１２個連結してあり、その両端に回転支持軸５９，６１を着脱可能に連結して回転可能となっている。図２中で左側の回転支持軸６１にはモータ６３を連結し、このモータ６３の駆動により１２個のコイル巻治具２１が一体となって回転する。
【００３７】
巻線機５３には、図３に示すように、同時に回転する４つの巻線リール６７から４本のコイル用巻線６９を順次繰り出し、コイル供給部７１を介して供給する。
【００３８】
コイル供給部７１は、リニアガイドレール７３に沿って図３中で左右方向に移動する移動台７５を備えている。この移動台７５は、リニアガイドレール７３に沿って延設されるねじ棒７７に螺合し、かつ図示しないモータによって回転するナットを備えたボールねじ機構によって移動する。
【００３９】
上記した移動台７５上には、前記した４本のコイル用巻線６９を収束させて巻線機５３側に送る送り機構７９を備えている。
【００４０】
次に作用を説明する。
【００４１】
まず、必要個数（ここでは１２個））のコイル巻治具２１を接続治具５５，５７によって接続し、これらを回転支持軸５９，６１により支持した状態で巻線機５３にセットする。このとき、コイル巻治具２１を構成する２つの治具体１５，１７相互間には、前記した所定の間隔Ｌを形成してある。この間隔Ｌの確保は、前述したように、例えば相互の間隔Ｌが固定された２本の固定ピンを、各治具体１５，１７に対し、図１中で上下方向に貫通して取り付ける。
【００４２】
また、このときコイル供給部７１の移動台７５は、図３中で右側端部に位置させておく。この状態で、送り機構７９より出ているコイル用巻線６９の端末を、図３中で右側の最端部のコイル巻治具２１に巻き付け固定する。
【００４３】
ここでモータ６３を駆動して回転支持軸５９，６１とともにコイル巻治具２１を回転させ、この回転と同時に、移動台７５を図３中で左方向に移動させる。これにより、コイル用巻線６９を、１２個のコイル巻治具２１に対し、図３中で右側のものから同左側のものに向けて順次連続して巻き付けて、各コイル巻治具２１のコイル３３が連続して形成されることになる。
【００４４】
すべてのコイル巻治具２１にコイル３３の巻き付け作業が終了したら、各コイル巻治具２１を回転支持軸５９，６１とともに、巻線機５３から取り外す。巻線機５３から取り外したコイル巻治具２１は、回転支持軸５９，６１を取り外すとともに、接続治具５５，５７も取り外し、さらに、二つの治具体２５，２７相互間の間隔Ｌを確保するための前記した図示しない２本の固定ピンを外した状態で、図２および図３に示してあるステータコア２３の側部の受け台８１上に並べて載置する。
【００４５】
受け台８１上に載置した各コイル巻治具２１は、渡り線によって互いにコイル３３が連続している。上記した受け台８１は、ステータコア２３を設置するワークセット治具９５とともに、リニアガイドレール９７にガイドされて図２，図３中で左右方向に移動可能である。
【００４６】
コイル巻治具２１から接続治具５５，５７を取り外し、さらに２本の固定ピンを取り外すことで、２つの治具体２５，２７に跨って巻き付けてあるコイル３３は、その復元力により弛んだ状態となるが、これを解消するために、図１（ｂ）に示してある間隔維持部材３５を使用する。
【００４７】
すなわち、間隔維持部材３５の第１の部材３７を、図１（ａ）に示すように、コイル巻治具２１の一方側から、一対の挿入部３７ａを治具体２５，２７相互間に挿入し、他方側に突出した係合凹部３７ｄに、第２の部材３９の係合凹部３９ａを係合させる。これにより、治具体２５，２７相互間に前記所定の間隔Ｌを維持する。
【００４８】
この状態で、図１（ｃ）に示すように、一方の治具体２７側の一部を、治具本体２９に設けてある凹部３１の図４中で紙面に直交する方向の一方の挿入用の開口から挿入する。この挿入時には、治具体２５，２７相互間は、間隔維持部材３５により、コイル巻き付け作業時と同様に間隔Ｌを維持してあるので、コイル３３は弛みがなく張力を備えた状態であり、したがって前記図１０に示したコイルの幅Ｗが前記図８に示した凹部の幅Ｈより大きくなることがなく、コイル巻治具２１の凹部３１への挿入作業が容易であり、コイル３３への傷付きも防止できる。
【００４９】
一方の治具体２７側の一部を治具本体２９の凹部３１に挿入したら、図１（ｃ）に示すように、第１の部材３７と第２の部材３９との相互の係合を外し、間隔維持部材３５をコイル巻治具２１から取り外す。これにより間隔Ｌの維持が解除されるが、このとき既に一方の治具体２７の一部を凹部３１に挿入してあるので、その後コイル巻治具２１全体を凹部３１に押し込む作業も、コイル３３を傷付けることなく、容易に行うことができる。
【００５０】
このようにしてコイル巻治具２１を、図４に示すように、２個一組分を治具本体２９の凹部３１に挿入した後は、図２に示してあるワークセット治具９５を、図２中で左方向に移動させ、図４に示すように、治具本体９が、ステータコア２３の内周面、すなわちスロット４７に対向した状態とする。
【００５１】
その後は、図２に示してある押圧具９３を下降させることで、プッシャ４９を、コイル巻治具２１と凹部３１との間の隙間５２を下方に移動させ、コイル３３を押圧して対応するスロット４７に挿入する。このとき、コイル３３は、上記した間隔Ｌの維持を解除してあるので、弛んだ状態であり、スロット４７へのコイル挿入作業を容易に行える。なお、図１（ｃ）ではプッシャ４９を省略してある。
【００５２】
２個一組のコイル巻治具２１に巻かれているコイル３３のスロット４７への挿入作業が終了したら、押圧具９３を上昇させる。押圧具９３の上昇により、プッシャ４９も、コイルスプリング５１に引っ張られて上昇し、スロット４７から離れた位置となる。
【００５３】
この状態で、コイル３３が外されたコイル巻治具２１を治具本体２９から取り外すとともに、ステータコア２３をワークセット治具９５上で回転させて、次にコイル３３を挿入するスロット４７が治具本体２９に対応する位置となるようにする。以後、コイル３３を巻き付けてあるコイル巻治具２１を、前記と同様にして治具本体２９に再度挿入セットして、コイル挿入作業を繰り返す。
【００５４】
上記したように、第１の実施形態によれば、治具本体２９の凹部３１にその挿入用の開口を経て２つの治具体２５，２７の一方を挿入する状態では、間隔維持部材３５を両治具体２５，２７相互間に配置して治具体２５，２７相互の所定の間隔Ｌを維持するので、このときのコイル３３はコイル巻治具２１に弛むことなく張力を備えた状態で巻かれており、コイル巻治具２１の治具本体２９へのセット作業がコイル３３に傷を付けることなく容易に行え、その後間隔維持部材３５を外した状態で、コイル巻治具２１全体を凹部３１に挿入することができる。
【００５５】
図５（ａ）は、この発明の第２の実施形態に係わる前記図２および図３に示すコイル挿入装置に使用するコイル巻治具２１０の斜視図、図５（ｂ）はコイル巻治具２１０の正面図である。このコイル巻治具２１０も、前記図９に示した従来のものと同様に、ステータコア２３にセットした状態で、このステータコア２３の軸線方向（図２中で左右方向）に沿って２つに分割される分割片としての治具体２５０，２７０で構成してある。
【００５６】
上記したコイル巻治具２１０は、第１の実施形態におけるコイル巻治具２１と外形がほぼ同様であるとともに、第１の実施形態と同様に、治具体２５０，２７０相互間に所定の間隔Ｌを確保した状態でコイル３３を巻き付ける。
【００５７】
ただし、この第２の実施形態では、コイル３３の巻き付け作業時での上記所定の間隔Ｌの確保は、間隔維持部材としてのブロック８５を、二つの治具体２５０，２７０相互間に位置させた状態で行う。
【００５８】
ブロック８５は、扁平矩形の板状に形成してあり、このブロック８５が入り込んで前記所定の間隔Ｌの維持を解除するための、ブロック８５と同形状の逃げ穴２７０ａを、治具体２７０の治具体２５０に対向する面に設けてある。
【００５９】
上記したブロック８５の治具体２７０側の一方の端部には、先端側ロッド８７を連結し、同他方の端部には基端側ロッド８９を連結する。先端側ロッド８７は、前記した逃げ穴２７０ａを貫通してその反対側に形成してある切欠凹部２７０ｂ内に突出し、この突出部を図５（ｂ）に示すようにクリップ９１で固定することで、先端側ロッド８７の図５（ｂ）中で左方向の抜け止めとしている。
【００６０】
一方、基端側ロッド８９は、ブロック８５と反対側の端部を、治具体２５０の治具体２７０と反対側の端面に形成してある切欠凹部２５０ａ内に突出させ、この突出端部をほぼ直角に屈曲させて、回転操作部８９ａとしてある。この回転操作部８９ａを回転操作することで、ブロック８５を回転させることができる。
【００６１】
上記した回転操作部８９ａは、図示していないコイル３３を巻く位置からずれた位置に設定し、回転操作時にコイル３３が邪魔にならないようにする。
【００６２】
次に、第２の実施形態の作用を説明する。ブロック８５を、図５に示すように、逃げ穴２７０ａに対して長手方向が互いにほぼ直交する方向となるように回転操作部８９ａを回転操作する。これにより、２つの治具体２５０，２７０相互間に前記所定の間隔Ｌを形成する。この状態で、第１の実施形態と同様にして前記図２，図３に示した巻線機５３でコイル３３を巻き付け、巻き付け作業が終了したら、上記間隔Ｌを維持したままのコイル巻治具２１０を、図６に示すように、一方の治具体２７０側から治具本体２９の凹部３１内に挿入セットし、コイル巻治具２１０全体を凹部３１内に挿入完了させる。なお、図６において、コイル３３は省略してある。
【００６３】
上記したコイル巻治具２１０の凹部３１への挿入セット時には、治具体２５０，２７０相互間は、ブロック８５により、コイル巻き付け作業時と同様に間隔Ｌを維持してあるので、コイル３３の弛みがなく、したがってコイル巻治具２１０の凹部３１への挿入作業が容易であり、コイル３３への傷付きも防止できる。
【００６４】
上記コイル巻治具２１０の凹部３１への挿入セット後は、基端側ロッド８９の回転操作部８９ａを、図５の位置からほぼ９０度回転させて、ブロック８５を治具体２７０の逃げ穴２７０ａに整合する位置とし、この状態で基端側ロッド８９を押し込むことで、ブロック８５を逃げ穴２７０ａに入り込ませる。
【００６５】
これにより、２つの治具体２５０，２７０相互の間隔Ｌの維持を解除し、コイル３３は弛んだ状態となり、その後のコイル３３のスロット４７への挿入作業が容易となる。
【００６６】
図７は、この発明の第３の実施形態を示している。この実施形態は、コイル巻治具２１００を構成する２つの治具体２５００，２７００の上部の端面２５００ａ，２７００ａに、治具本体２９の凹部３１への挿入方向に沿って、ガイド溝２５００ｂ，２７００ｂを設ける一方、これに対応して凹部３１における底面３１ａには、ガイドレール９２を、凹部３１から突出させた状態で設けている。
【００６７】
上記したガイド溝２５００ｂ，２７００ｂとガイドレール９２とでスライドガイド部を構成している。
【００６８】
ガイドレール９２は、凹部３１の底面３１ａの取付溝３１ｂに嵌合して固定する角柱部９２ａと、角柱部９２ａの下部に接合されて、ステータコア２３の中心側に比べて外周側が幅広となるテーパ形状のレール部９２ｂとを有する構成としてある。一方、ガイド溝２５００ｂ，２７００ｂは、上記したレール部９２ｂと整合するようレール部９２ｂと同形状としてある。
【００６９】
上記したコイル巻治具２１００を治具本体２９の凹部３１に挿入セットする際には、凹部３１から突出しているガイドレール９２のレール部９２ｂに嵌め込んでスライドさせつつ挿入する。
【００７０】
これにより、コイル巻治具２１００と治具本体２９との上下左右の位置決めが確実にでき、コイル巻治具２１００の治具本体２９の凹部３１への挿入セット作業が容易となる。
【００７１】
上記図７に示したようなガイドレール構造を、前記した第１，第２の各実施形態と組み合わせて使用することで、コイル巻治具の治具本体２９の凹部３１への挿入作業がより一層容易となり、コイル３３の損傷も確実に防止することができる。
【００７２】
なお、ガイド溝２５００ｂ，２７００ｂを治具本体２９側に、ガイドレール９２をコイル巻治具２１００側に設けてもよい。
【図面の簡単な説明】
【図１】（ａ）は、この発明の第１の実施形態に係わる図２および図３に示すコイル挿入装置に使用するコイル巻治具に間隔維持部材をセットした状態を示す斜視図、（ｂ）は間隔維持部材の分解斜視図、（ｃ）は（ａ）のコイル巻治具を治具本体にセットし間隔維持部材を取り外した状態を示す動作説明図である。
【図２】第１の実施形態に係わるコイル挿入装置の正面図である。
【図３】図２の平面図である。
【図４】図２の拡大されたＡ矢視図である。
【図５】（ａ）は、この発明の第２の実施形態に係わる図２および図３に示すコイル挿入装置に使用するコイル巻治具の斜視図、（ｂ）は同コイル巻治具の正面図である。
【図６】図５のコイル巻治具を治具本体の凹部に挿入セットした状態を示す斜視図である。
【図７】この発明の第３の実施形態を示す動作説明図である。
【図８】従来のコイル挿入方法を示す説明図である。
【図９】従来のコイル巻治具の斜視図である。
【図１０】従来のコイル巻治具の２つの治具体相互の間隔の確保を解除した状態を示す斜視図である。
【符号の説明】
２１，２１０，２１００コイル巻治具
２３ステータコア
２５，２７，２５０，２７０，２５００，２７００治具体（分割片）
２９治具本体
３１凹部
３１ａ凹部の底面
３３コイル
３５間隔維持部材
３７コ字状の第１の部材
３９第２の部材
３７ａ，３９ａ挿入部
３７ｃ連結部
４７スロット
４９プッシャ
５２隙間
８５ブロック
８７先端側ロッド
８９基端側ロッド
８９ａ回転操作部
９２テーパ形状のガイドレール（スライドガイド部）
２７０ａ逃げ穴
２５００ａ，２７００ａコイル巻治具の端面
２５００ｂ，２７００ｂガイドレールと同形状のガイド溝（スライドガイド部）
Ｌ所定の間隔[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coil insertion method and apparatus for inserting a coil into a slot formed in an inner peripheral portion of an annular stator core in an axial direction.
[0002]
[Prior art]
As a conventional coil insertion method and apparatus, for example, there is one described in Patent Document 1.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2002-325408
This is such that a coil 7 wound around a coil winding jig 5 is inserted into a plurality of slots 3 formed on the inner peripheral surface of a cylindrical stator core 1 as shown in FIG. is there.
[0005]
The coil 7 is formed by continuously winding a coil winding around a plurality of coil winding jigs 5, of which two jig winding jigs 5 are arranged inside a stator core 1. 8 is inserted and set in a direction perpendicular to the paper surface of FIG. At this time, a gap 13 into which the coil 7 enters is formed between the left and right side surfaces of the coil winding jig 5 in FIG. The plate-like blade 15 is inserted.
[0006]
Then, the coil 7 is pushed down and inserted into the slot 3 by moving the blade 15 downward along the gap 13. After the coil is inserted, the two coil winding jigs 5 from which the coil 7 has been removed are removed from the jig body 9.
[0007]
After the two coils 7 are inserted into the corresponding slots 3, the stator core 1 is rotated so that the slots 3 into which the coils 7 are next inserted correspond to the positions corresponding to the gaps 13. The two coil winding jigs 5 are set on the jig main body 9 in the same manner as described above, and the two coils 7 are inserted by the blade 15.
[0008]
Thereafter, similarly, the stator core 1 is sequentially rotated, and the coils 7 are inserted into the corresponding slots 3 two by two.
[0009]
Here, the coil winding jig 5 is divided into two pieces along the axial direction of the stator core 1 (a direction orthogonal to the plane of FIG. 8) as shown in a perspective view in FIG. It is composed of specific treatments 15 and 17.
[0010]
When the coil 7 is wound around the coil winding jig 5 as shown in FIG. 9, the coil 7 is wound in a state in which a predetermined interval L is formed between the two jigs 15 and 17.
[0011]
In order to secure the interval L, for example, two fixing pins having the interval L fixed to each other may be attached to each of the treatments 15 and 17 by vertically penetrating in FIG. After the coil 7 is wound, by removing the two fixing pins, the distance L between the fixed parts 15 and 17 becomes L = 0, and the tension of the wound coil 7 is reduced.
[0012]
In this state, the coil winding jig 5 is inserted and set in the recess 11 of the jig main body 9 in a direction perpendicular to the plane of FIG.
[0013]
[Problems to be solved by the invention]
By the way, in the conventional device described above, after the coil 7 is wound around the coil winding jig 5, the securing of the interval L between the respective treatments 15 and 17 is released, so that the coil 7 is restored by its restoring force. As shown in (1), the blade 15 is easily pressed down on the coil 7 by the blade 15 described above.
[0014]
However, when inserting and setting the coil winding jig 5 with the coil 7 loose in the recess 11 of the jig main body 9, the width W of the coil 7 shown in FIG. 10 is larger than the width of the recess 11 shown in FIG. As a result, the insertion force into the concave portion 11 of the coil winding jig 5 increases, and the insertion operation becomes longer and the coil 7 is damaged.
[0015]
Particularly, since the dimensional difference between the coil winding jig 5 and the concave portion 11 of the jig main body 9 and the stator core 1 has an extremely small relationship in function, the above-described problem is likely to occur.
[0016]
Accordingly, an object of the present invention is to facilitate the work of setting a coil winding jig on a jig main body and prevent the coil from being damaged.
[0017]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a plurality of slots formed along an inner peripheral portion of an annular stator core so as to extend in an axial direction, is disposed at a position facing the slots, and is wound with a coil. A jig body for inserting and setting the coil winding jig into a concave portion having an opening for insertion on at least one surface in the axial direction, and holding the jig body between the jig body and the coil winding jig. In a coil insertion method of pressing a coil located in the gap by a pusher set in the gap and inserting the coil into the slot, the coil winding jig is held in the jig body along the axial direction. In the state where a predetermined interval is formed between the two divided pieces, a coil winding is wound over the two divided pieces to form a coil, and the coil is formed. Wound An interval maintaining member is disposed between the two split pieces of the il winding jig to maintain the predetermined interval, and in this state, the coil winding jig is inserted into the recess from one side of the two split pieces. There is provided a coil insertion method of inserting through an opening and thereafter releasing the maintenance of the predetermined interval by the interval maintaining member.
[0018]
【The invention's effect】
According to this invention, in a state where the coil winding jig is inserted from one side of both split pieces through the opening for insertion into the concave portion of the jig main body, the gap maintaining member is arranged between the two split pieces. At this time, the coil is wound around the coil winding jig with a predetermined tension without loosening, so that the coil is fixed to the jig body. Can be easily performed without damaging the coil, and the insertion of the coil into the slot of the stator core is facilitated by removing the spacing member after insertion.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
FIG. 1A is a perspective view showing a state where a gap maintaining member 35 is set on a coil winding jig 21 used in the coil insertion device shown in FIGS. 2 and 3 according to the first embodiment of the present invention. FIG. 2B is an exploded perspective view of the gap maintaining member 35, and FIG. 2C is an operation explanatory view showing a state in which the coil winding jig 21 of FIG. 2A is set on the jig main body 29 and the gap maintaining member 35 is removed. It is.
[0021]
The coil winding jig 21 is set along the axial direction of the stator core 23 (in the horizontal direction in FIG. 2) in a state where the coil winding jig 21 is set on the stator core 23, similarly to the conventional one shown in FIGS. It is composed of two specific pieces 25 and 27 as divided pieces.
[0022]
As shown in FIG. 4 which is an enlarged view of the arrow A in FIG. 2, the concave portion 31 of the jig main body 29 in which the coil winding jig 21 is set is located on the front end side of the jig main body 29 (the lower part in FIG. The width in the left-right direction is wider than the base side (upper side in FIG. 4). Correspondingly, the coil winding jig 21 is also wider at the distal end side than at the proximal end side. That is, the shape of the coil winding jig 21 as viewed from the axial direction of the stator core 23 is a trapezoid whose lower base is longer than the upper base in FIG.
[0023]
On the other hand, the width of the coil winding jig 21 in the axial direction of the stator core 23 (the direction orthogonal to the plane of FIG. 4) is opposite to the above, as can be seen in FIG. 4 (upper side in FIG. 4) is formed wider than the tip side (lower side in FIG. 4). That is, the shape of the coil winding jig 21 as viewed from the left-right direction in FIG. 4 is a trapezoid whose upper base is longer than the lower base.
[0024]
By setting the coil winding jig 21 in the above-described shape, when the coil 33 is wound over the two specifics 25 and 27, the length of one turn of the coil 33 is reduced by the coil winding jig 21. From the distal end side to the base end side (from the lower side to the upper side in FIG. 4, it can be constant.
[0025]
The coil winding jig 21 winds the coil 33 in a state where a predetermined distance L is secured between the fixing members 25 and 27, similarly to the conventional one shown in FIG. The winding operation will be described later. As described above, for example, two fixed pins having a fixed distance L between the fixed portions 25 and 27 are fixed to the fixed portions 25 and 27 in FIG. What is necessary is just to penetrate vertically and to attach it.
[0026]
After the coil 33 is wound, the above-mentioned two fixing pins are removed, and the resin-made spacing member 35 shown in FIG. 1B is set on the coil winding jig 21. The interval maintaining member 35 includes a U-shaped first member 37 and a rod-shaped second member 39.
[0027]
The first member 37 includes a pair of insertion portions 37a that are respectively inserted into upper and lower sides of the coil 33 between the fixing members 25 and 27, and a connection portion 37c that connects one end of the pair of insertion portions 37a to each other. And an engagement recess 37d is provided on the side surface of the other end of the pair of insertion portions 37a. On the other hand, the second member 39 is provided with engagement recesses 39a which are detachably connected to the engagement recesses 37d on the side surfaces at both ends in the longitudinal direction.
[0028]
Further, the first member 37 is formed so that the lower insertion portion 37b is formed longer than the upper insertion portion 37a in accordance with the shape of the trapezoidal coil winding jig 21 described above, and the connecting portion 37c is formed of the coil winding jig 21. It can be arranged along the side. Then, when the insertion portions 37a and 37b of the first member 37 are inserted between the fixing members 25 and 27, and the connecting portion 37c is arranged along the side surface of the coil winding jig 21 and brought into contact with the coil 33. The engagement recess 37d is set so that the engagement recess 37d is located near the side surface on the opposite side of the coil winding jig 21.
[0029]
Therefore, as shown in FIG. 1A, in a state where the engagement recess 39a of the second member 39 is engaged with the engagement recess 37d, the second member 39 The first member 37 is arranged along the side surface opposite to the side on which the first member 37 is inserted, and comes into contact with the coil 33.
[0030]
As shown in FIG. 1A, the first member 37 is inserted from one side of the coil winding jig 21 by inserting the insertion portion 37a between the fixing members 25 and 27 and projecting to the other side. By engaging the engagement recess 39a of the second member 39 with the engagement recess 37d, a predetermined interval L is secured between the treatments 25 and 27.
[0031]
1 (a), the upper end surfaces 25a, 27a of the coil winding jig 21 are provided with grooves 25b, 27b extending along the axial direction of the stator core 23, while FIG. As shown in the figure, positioning projections 29b that fit into the concave grooves 25b and 27b are provided on the bottom surface 29a of the concave portion 31, respectively. By fitting the positioning projections 29b into the concave grooves 25b and 27b, a gap 40 is formed between the concave portion 31 and the left and right side walls of the coil winding jig 21 in FIG.
[0032]
Next, the entire coil insertion device will be described with reference to FIGS.
[0033]
The jig main body 29 shown in FIG. 4 is protruded horizontally from the upper end of the support column 43 erected on the base 41 toward the stator core 23 side, at the tip end of an L-shaped arm portion 45 in plan view. It is hanging. As shown in FIG. 4, the jig body 29 has the coil winding jig 21 around which the coil 33 is wound inserted and set in the concave portion 31, and presses the coil 33 to press the slot 47 of the stator core 23. Is held. The pusher 49 is elastically supported by the coil spring 51 and is set at the upper end of the gap 40 between the coil winding jig 21 and the concave portion 31 inserted and set in the concave portion 31 of the jig body 29. .
[0034]
The above-described pusher 49 is pushed down in the gap 52 by the lowering of the pressing tool 93 disposed above the pusher 49. Further, the stator core 11 is set on a work set jig 95 and is movable on the linear guide rail 97 in a direction approaching and separating from the jig main body 29. As shown in FIG. 4, it is in a state of facing the slot 47.
[0035]
A winding machine 53 is disposed on the left side of the base 41 in FIG. The winding machine 53 is configured to continuously wind the coil 33 on a total of 12 coil winding jigs 21 sequentially connected by two types of connection jigs 55 and 57.
[0036]
The coil winding jig 21 described above has twelve parts connected via connection jigs 55 and 57 with upper and lower ends as connection parts in FIG. 1A, and rotation support shafts 59 and 61 are connected to both ends. It is detachably connected and rotatable. A motor 63 is connected to the left rotation support shaft 61 in FIG. 2, and the twelve coil winding jigs 21 are integrally rotated by driving the motor 63.
[0037]
As shown in FIG. 3, four coil windings 69 are sequentially fed from the four winding reels 67 rotating at the same time, and supplied to the winding machine 53 via the coil supply unit 71.
[0038]
The coil supply unit 71 includes a moving table 75 that moves in the left-right direction in FIG. 3 along the linear guide rail 73. The moving table 75 is screwed to a screw rod 77 extending along the linear guide rail 73, and is moved by a ball screw mechanism having a nut rotated by a motor (not shown).
[0039]
On the moving table 75, there is provided a feed mechanism 79 for converging the four coil windings 69 and sending them to the winding machine 53 side.
[0040]
Next, the operation will be described.
[0041]
First, a required number (12 in this case) of the coil winding jigs 21 are connected by connecting jigs 55 and 57, and are set on the winding machine 53 while being supported by the rotation support shafts 59 and 61. At this time, the above-described predetermined distance L is formed between the two treatments 15 and 17 constituting the coil winding jig 21. As described above, to secure the interval L, for example, two fixing pins having the interval L fixed to each other are respectively attached to the respective treatments 15 and 17 by vertically penetrating in FIG.
[0042]
At this time, the moving table 75 of the coil supply unit 71 is located at the right end in FIG. In this state, the terminal of the coil winding 69 protruding from the feed mechanism 79 is wound around and fixed to the coil winding jig 21 at the rightmost end in FIG.
[0043]
Here, the motor 63 is driven to rotate the coil winding jig 21 together with the rotation support shafts 59 and 61, and at the same time, the movable table 75 is moved leftward in FIG. In this way, the coil windings 69 are sequentially and continuously wound around the twelve coil winding jigs from the right one to the left one in FIG. The coil 33 is formed continuously.
[0044]
When the operation of winding the coil 33 around all the coil winding jigs 21 is completed, each coil winding jig 21 is removed from the winding machine 53 together with the rotation support shafts 59 and 61. The coil winding jig 21 removed from the winding machine 53 removes the rotation support shafts 59 and 61, removes the connection jigs 55 and 57, and further secures a space L between the two specific examples 25 and 27. 2 and 3 are placed side by side on the receiving base 81 on the side of the stator core 23 shown in FIGS.
[0045]
In each coil winding jig 21 placed on the receiving table 81, the coil 33 is continuous with each other by a crossover. The receiving base 81 described above is guided by a linear guide rail 97 together with a work set jig 95 for installing the stator core 23, and is movable in the left and right directions in FIGS.
[0046]
By removing the connection jigs 55 and 57 from the coil winding jig 21 and removing two fixing pins, the coil 33 wound over the two jigs 25 and 27 is loosened by its restoring force. However, in order to solve this, the gap maintaining member 35 shown in FIG. 1B is used.
[0047]
That is, as shown in FIG. 1A, the first member 37 of the gap maintaining member 35 is inserted from one side of the coil winding jig 21 into the pair of insertion portions 37 a between the fixing members 25 and 27. The engagement recess 39a of the second member 39 is engaged with the engagement recess 37d protruding to the other side. Thus, the predetermined distance L is maintained between the treatments 25 and 27.
[0048]
In this state, as shown in FIG. 1 (c), a part on one side of the jig 27 is inserted into one side of the recess 31 provided in the jig body 29 in the direction perpendicular to the plane of FIG. Insert through the opening. At the time of this insertion, since the interval L is maintained between the cures 25 and 27 by the interval maintaining member 35 in the same manner as in the coil winding operation, the coil 33 is in a state in which there is no slack and tension is provided. The width W of the coil shown in FIG. 10 does not become larger than the width H of the concave portion shown in FIG. 8, and the operation of inserting the coil winding jig 21 into the concave portion 31 is easy. Sticking can also be prevented.
[0049]
When a part on one side of the jig 27 is inserted into the concave portion 31 of the jig body 29, the mutual engagement between the first member 37 and the second member 39 is released as shown in FIG. Then, the spacing member 35 is removed from the coil winding jig 21. As a result, the maintenance of the interval L is released. At this time, since a part of one of the fixing members 27 has already been inserted into the concave portion 31, the operation of pushing the entire coil winding jig 21 into the concave portion 31 also requires the operation of the coil 33. Can be easily performed without damaging the surface.
[0050]
After the coil winding jig 21 is inserted into the concave portion 31 of the jig main body 29 as shown in FIG. 4 in this manner, the work set jig 95 shown in FIG. The jig main body 9 is moved to the left in FIG. 2 so that the jig body 9 faces the inner peripheral surface of the stator core 23, that is, the slot 47, as shown in FIG.
[0051]
Thereafter, by lowering the pressing tool 93 shown in FIG. 2, the pusher 49 is moved downward in the gap 52 between the coil winding jig 21 and the concave portion 31 and presses the coil 33 to respond. Insert into slot 47. At this time, since the maintenance of the above-mentioned interval L has been released, the coil 33 is in a slack state, and the operation of inserting the coil into the slot 47 can be easily performed. In FIG. 1C, the pusher 49 is omitted.
[0052]
When the operation of inserting the coil 33 wound around the pair of coil winding jigs 21 into the slots 47 is completed, the pressing tool 93 is raised. By the lifting of the pressing tool 93, the pusher 49 is also pulled up by the coil spring 51 and rises to a position away from the slot 47.
[0053]
In this state, the coil winding jig 21 from which the coil 33 has been removed is detached from the jig main body 29, and the stator core 23 is rotated on the work set jig 95. The position corresponds to the main body 29. Thereafter, the coil winding jig 21 around which the coil 33 is wound is inserted and set again in the jig main body 29 in the same manner as described above, and the coil inserting operation is repeated.
[0054]
As described above, according to the first embodiment, in a state in which one of the two treatments 25 and 27 is inserted into the concave portion 31 of the jig main body 29 through the opening for insertion, the gap maintaining member 35 is connected to both of the two. The coil 33 at this time is wound around the coil winding jig 21 in a state where tension is provided without being loosened, since the coil 33 is disposed between the first and second specific treatments 25 and 27 to maintain a predetermined distance L between the first and second specific treatments 25 and 27. The coil winding jig 21 can be easily set on the jig main body 29 without damaging the coil 33. Thereafter, with the gap maintaining member 35 removed, the entire coil winding jig 21 is placed in the concave portion 31. Can be inserted.
[0055]
FIG. 5A is a perspective view of a coil winding jig 210 used in the coil insertion device shown in FIGS. 2 and 3 according to the second embodiment of the present invention, and FIG. 5B is a coil winding jig. FIG. 210 is a front view of FIG. Similarly to the conventional coil winding jig shown in FIG. 9, this coil winding jig 210 is also divided into two along the axial direction of the stator core 23 (the left-right direction in FIG. 2) while being set on the stator core 23. It is composed of treatments 250 and 270 as divided pieces to be processed.
[0056]
The outer shape of the coil winding jig 210 is substantially the same as the outer shape of the coil winding jig 21 in the first embodiment, and a predetermined distance L is set between the jigs 250 and 270 similarly to the first embodiment. Is wound with the coil 33 secured.
[0057]
However, in the second embodiment, the predetermined interval L during the winding operation of the coil 33 is ensured by positioning the block 85 as the interval maintaining member between the two treatments 250 and 270. Do with.
[0058]
The block 85 is formed in a flat rectangular plate shape. An escape hole 270 a having the same shape as that of the block 85 is formed in the block 85 to enter the block 85 and release the maintenance of the predetermined distance L. It is provided on the surface facing the concrete 250.
[0059]
The distal end rod 87 is connected to one end of the block 85 on the cure specific 270 side, and the proximal end rod 89 is connected to the other end. The distal rod 87 penetrates through the above-described relief hole 270a and protrudes into a cutout recess 270b formed on the opposite side, and this projection is fixed by a clip 91 as shown in FIG. 5B. 5 (b) to prevent the distal end rod 87 from slipping leftward.
[0060]
On the other hand, the proximal rod 89 has an end opposite to the block 85 protruding into a cutout recess 250a formed on an end surface opposite to the treatment 270 of the treatment 250, and this projecting end is substantially It is bent at a right angle to form a rotation operation unit 89a. The block 85 can be rotated by rotating the rotation operation section 89a.
[0061]
The above-mentioned rotation operation section 89a is set at a position shifted from a position where the coil 33 (not shown) is wound, so that the coil 33 does not interfere with the rotation operation.
[0062]
Next, the operation of the second embodiment will be described. As shown in FIG. 5, the rotation operation of the rotation operation section 89a of the block 85 is performed so that the longitudinal directions thereof are substantially orthogonal to the escape holes 270a. Thus, the predetermined distance L is formed between the two treatments 250 and 270. In this state, the coil 33 is wound by the winding machine 53 shown in FIGS. 2 and 3 in the same manner as in the first embodiment, and when the winding operation is completed, the coil winding jig maintaining the distance L is maintained. As shown in FIG. 6, the insertion of the coil winding jig 210 into the concave portion 31 is completed by inserting the 210 into the concave portion 31 of the jig main body 29 from one of the specifics 270. In FIG. 6, the coil 33 is omitted.
[0063]
At the time of inserting the coil winding jig 210 into the recess 31 as described above, the gap L is maintained by the block 85 between the treatments 250 and 270 as in the coil winding operation. Therefore, the operation of inserting the coil winding jig 210 into the concave portion 31 is easy, and the coil 33 can be prevented from being damaged.
[0064]
After the coil winding jig 210 has been inserted into the concave portion 31 and set, the rotation operation section 89a of the proximal rod 89 is rotated substantially 90 degrees from the position shown in FIG. By pressing the proximal rod 89 in this state, the block 85 is inserted into the escape hole 270a.
[0065]
As a result, the maintenance of the interval L between the two treatments 250 and 270 is released, the coil 33 becomes slack, and the subsequent operation of inserting the coil 33 into the slot 47 becomes easy.
[0066]
FIG. 7 shows a third embodiment of the present invention. In this embodiment, guide grooves 2500b and 2700b are provided on upper end surfaces 2500a and 2700a of two jigs 2500 and 2700 constituting the coil winding jig 2100 along the direction in which the jig body 29 is inserted into the concave portion 31. On the other hand, correspondingly, a guide rail 92 is provided on the bottom surface 31 a of the concave portion 31 so as to protrude from the concave portion 31.
[0067]
The guide grooves 2500b and 2700b and the guide rail 92 constitute a slide guide.
[0068]
The guide rail 92 has a prismatic portion 92 a fitted and fixed in the mounting groove 31 b of the bottom surface 31 a of the concave portion 31, and a taper joined to a lower portion of the prismatic portion 92 a so that the outer peripheral side is wider than the center side of the stator core 23. And a rail portion 92b having a shape. On the other hand, the guide grooves 2500b and 2700b have the same shape as the rail portion 92b so as to align with the above-described rail portion 92b.
[0069]
When the coil winding jig 2100 is inserted and set in the concave portion 31 of the jig main body 29, the coil winding jig 2100 is inserted into the rail portion 92b of the guide rail 92 projecting from the concave portion 31 while sliding.
[0070]
Accordingly, the positioning of the coil winding jig 2100 and the jig main body 29 in the up, down, left, and right directions can be reliably performed, and the work of inserting and setting the coil winding jig 2100 into the concave portion 31 of the jig main body 29 becomes easy.
[0071]
By using the guide rail structure as shown in FIG. 7 in combination with each of the first and second embodiments, the work of inserting the coil winding jig into the recess 31 of the jig main body 29 can be further improved. It becomes even easier, and damage to the coil 33 can be reliably prevented.
[0072]
The guide grooves 2500b and 2700b may be provided on the jig main body 29 side, and the guide rail 92 may be provided on the coil winding jig 2100 side.
[Brief description of the drawings]
FIG. 1A is a perspective view showing a state where a spacing member is set on a coil winding jig used in the coil insertion device shown in FIGS. 2 and 3 according to the first embodiment of the present invention; (b) is an exploded perspective view of the spacing member, and (c) is an operation explanatory view showing a state in which the coil winding jig of (a) is set on the jig main body and the spacing member is removed.
FIG. 2 is a front view of the coil insertion device according to the first embodiment.
FIG. 3 is a plan view of FIG. 2;
FIG. 4 is an enlarged view as viewed from an arrow A in FIG. 2;
5A is a perspective view of a coil winding jig used in the coil insertion device shown in FIGS. 2 and 3 according to a second embodiment of the present invention, and FIG. 5B is a perspective view of the coil winding jig. It is a front view.
6 is a perspective view showing a state where the coil winding jig of FIG. 5 is inserted and set in a concave portion of the jig main body.
FIG. 7 is an operation explanatory view showing a third embodiment of the present invention.
FIG. 8 is an explanatory diagram showing a conventional coil insertion method.
FIG. 9 is a perspective view of a conventional coil winding jig.
FIG. 10 is a perspective view showing a state in which the interval between two specifics of the conventional coil winding jig is released.
[Explanation of symbols]
21, 210, 2100 Coil winding jig 23 Stator core 25, 27, 250, 270, 2500, 2700 Specific treatment (split piece)
29 jig body 31 concave portion 31a concave bottom surface 33 coil 35 spacing maintaining member 37 U-shaped first member 39 second member 37a, 39a insertion portion 37c connecting portion 47 slot 49 pusher 52 gap 85 block 87 distal rod 89 Base end side rod 89a Rotating operation part 92 Tapered guide rail (slide guide part)
270a Escape holes 2500a, 2700a End surfaces 2500b, 2700b of coil winding jig Guide groove (slide guide portion) having the same shape as guide rail
L Predetermined interval

Claims

A plurality of slots are formed along the inner peripheral portion of the annular stator core so as to extend in the axial direction, and are arranged at positions facing the slots, and a coil winding jig around which the coil is wound is provided at least in the axial direction. A jig body is provided which is inserted and set in a concave portion having an opening for insertion on one surface, and is held in the gap by a pusher set in the gap between the jig body and the coil winding jig. In the coil insertion method of pressing a coil to be inserted into the slot, the coil winding jig is constituted by divided pieces divided along the axial direction while being held by the jig main body. In a state where a predetermined interval is formed between the two split pieces, a coil winding is wound over the two split pieces to form a coil, and the coil is wound between the two split pieces. Maintain spacing A material is arranged to maintain the predetermined interval, and in this state, the coil winding jig is inserted into the concave portion from one side of the two divided pieces through an insertion opening, and then, the space maintaining member is used. A coil insertion method, wherein the maintenance of the predetermined interval is released.

The gap maintaining member connects a pair of insertion portions inserted from one side to the other side on both sides of the coil between the two divided pieces, and connects one end of the pair of insertion portions to each other. A first member having a U-shape formed of a connecting portion and a second member that releasably connects the projecting portions of the first member to the other side. 2. The coil insertion method according to 1.

The interval maintaining member is configured by a block that is located between the two divided pieces and maintains the predetermined interval, and the block is configured such that the predetermined direction is set with the arrangement direction of the two divided pieces as a central axis. A rotation operation unit that enters at a position rotated by a predetermined angle from a position to maintain the clearance and releases the maintenance of the predetermined space is provided in at least one of the two divided pieces, and rotates the block by a predetermined angle. The coil insertion method according to claim 1, further comprising:

A plurality of slots are formed along the inner peripheral portion of the annular stator core so as to extend in the axial direction, and are arranged at positions facing the slots, and a coil winding jig around which the coil is wound is provided at least in the axial direction. A jig body is provided which is inserted and set in a concave portion having an opening for insertion on one surface, and is held in the gap by a pusher set in the gap between the jig body and the coil winding jig. In the coil insertion device for pressing a coil to be inserted into the slot, the coil winding jig is constituted by divided pieces divided into two along the axial direction while being held by the jig body. In a state where a predetermined interval is formed between the two divided pieces, a coil winding is wound over the two divided pieces to form a coil, and the coil winding jig around which the coil is wound is placed in the recess. For insertion When inserting through the mouth, while maintaining the predetermined interval by arranging between the two divided pieces, it is provided with an interval maintaining member for removing and releasing the maintenance of the predetermined interval after insertion. Characterized coil insertion device.

The spacing maintaining member connects a pair of insertion portions to be inserted from one side to the other side on both sides of the coil between the two divided pieces, and connects one end of the pair of insertion portions to each other. A first member having a U-shape formed of a connecting portion and a second member that releasably connects the projecting portions of the first member to the other side. 5. The coil insertion device according to 4.

The interval maintaining member is configured by a block that is located between the two divided pieces and maintains the predetermined interval, and the block is configured such that the predetermined direction is set with the arrangement direction of the two divided pieces as a central axis. A rotation operation unit that enters at a position rotated by a predetermined angle from a position to maintain the clearance and releases the maintenance of the predetermined space is provided in at least one of the two divided pieces, and rotates the block by a predetermined angle. The coil insertion device according to claim 4, further comprising:

On both sides of the block, a rod that is rotatable with the block and movable along the arrangement direction of the two divided pieces with respect to the two divided pieces is provided to be connected to the outside of the coil winding jig of the rod. The coil insertion device according to claim 6, wherein the rotation operation portion is provided at a portion protruding from the coil insertion device.

A guide for inserting and setting the coil winding jig into the recess through the insertion opening of the jig body on the bottom surface of the recess of the jig body and on the end face of the coil winding jig facing the bottom surface. A tapered guide rail in which one of the coil winding jig and the jig body is wider on the outer peripheral side than the center side of the stator core. The coil insertion device according to any one of claims 4 to 7, wherein the other side is formed by a guide groove having a shape corresponding to the guide rail.

9. The coil insertion device according to claim 8, wherein the guide rail is provided on the jig main body side, and the guide rail protrudes from an opening in a concave portion of the jig main body.