JP4914287B2 - Insulator, split stator, and stator for rotating electrical machine - Google Patents

Insulator, split stator, and stator for rotating electrical machine Download PDF

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JP4914287B2
JP4914287B2 JP2007121547A JP2007121547A JP4914287B2 JP 4914287 B2 JP4914287 B2 JP 4914287B2 JP 2007121547 A JP2007121547 A JP 2007121547A JP 2007121547 A JP2007121547 A JP 2007121547A JP 4914287 B2 JP4914287 B2 JP 4914287B2
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stator
terminal
yoke
extending
bus bar
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JP2008278691A (en
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雅樹 松山
英治 山田
裕 小松
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Sumitomo Electric Industries Ltd
Toyota Motor Corp
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Sumitomo Electric Industries Ltd
Toyota Motor Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Description

この発明は、ハイブリッド自動車や燃料電池自動車等に組み込まれる回転電機（たとえば電気モータ）のステータに関する。   The present invention relates to a stator of a rotating electric machine (for example, an electric motor) incorporated in a hybrid vehicle, a fuel cell vehicle, or the like.

ハイブリッド自動車や燃料電池自動車は、駆動装置や回生ブレーキとして回転電機を使用する。この回転電機に組み込まれるステータとして、環状のヨークとそのヨークから内周側に延出するティースとからなるステータコアと、そのステータコアのティースにインシュレータを介して巻回されるコイルと、ステータコアと同心に配置されたリング状のバスバーユニットとを有する回転電機用ステータが知られている（特許文献１）。   Hybrid vehicles and fuel cell vehicles use rotating electrical machines as drive units and regenerative brakes. As a stator incorporated in the rotating electrical machine, a stator core composed of an annular yoke and teeth extending from the yoke to the inner peripheral side, a coil wound around the teeth of the stator core via an insulator, and concentric with the stator core A stator for a rotating electric machine having a ring-shaped bus bar unit arranged is known (Patent Document 1).

この回転電機用ステータは、バスバーユニットに組み込まれた給電用バスバーからステータ内周側に延出する給電端子と、バスバーユニットに組み込まれた中性点バスバーからステータ内周側に延出する中性点端子を有し、コイルの巻回部からステータ外周側に引き出された巻き始め端末が給電端子に接続され、コイルの巻回部からステータ外周側に引き出された巻き終わり端末が中性点端子に接続されている。
特開２００６−６７７４０号公報 The stator for a rotating electrical machine includes a power supply terminal extending from the power supply bus bar incorporated in the bus bar unit to the stator inner peripheral side, and a neutral point extending from the neutral point bus bar incorporated in the bus bar unit to the stator inner peripheral side. A winding start terminal that has a point terminal and is drawn from the coil winding portion to the stator outer peripheral side is connected to the power supply terminal, and a winding end terminal that is drawn from the coil winding portion to the stator outer periphery side is a neutral point terminal It is connected to the.
JP 2006-67740 A

しかし、この回転電機用ステータのバスバーユニットは、給電端子と中性点端子に、コイルの巻回部からステータ外周側に引き出されたコイルの端末を接続したときに、給電用バスバーと中性点バスバーがステータ軸方向に見てヨークと重なった配置となる。そのため、このバスバーユニットは、ティースよりもヨークの方がステータ軸方向の厚さが大きいステータに組み込むと、ステータの軸方向の厚さが大きくなり、他の部品の設置スペースが不足しやすいという問題があった。   However, this rotating electrical machine stator bus bar unit is connected to the feeding bus bar and neutral point when the coil terminal drawn from the coil winding portion to the stator outer peripheral side is connected to the feeding terminal and the neutral point terminal. The bus bar is disposed so as to overlap the yoke as viewed in the stator axial direction. For this reason, when this bus bar unit is incorporated in a stator in which the yoke is thicker in the axial direction than the teeth, the axial thickness of the stator becomes large, and the installation space for other parts tends to be insufficient. was there.

そこで、この問題を解消するため、給電用バスバーからステータ外周側に給電端子を延出させるとともに、中性点バスバーからステータ外周側に中性点端子を延出させ、その給電端子と中性点端子をコイルの端末に接続するようにすると、給電用バスバーと中性点バスバーがステータ軸方向に見てヨークと重ならないので、ステータ軸方向の厚さを抑えることができるが、この場合、各端子のコイル端末への接続部分がステータ軸方向に見てヨークと重なる位置となるので、各端子のコイル端末への接続部分とヨークの外周との絶縁距離が短くなり、絶縁の信頼性を確保することが難しい。   Therefore, in order to solve this problem, the power supply terminal is extended from the power supply bus bar to the outer periphery of the stator, and the neutral point terminal is extended from the neutral point bus bar to the outer periphery of the stator. If the terminal is connected to the end of the coil, the power supply bus bar and the neutral bus bar do not overlap with the yoke when viewed in the stator axial direction, the thickness in the stator axial direction can be suppressed. Since the connection part of the terminal to the coil terminal overlaps with the yoke when viewed in the stator axial direction, the insulation distance between the connection part of each terminal to the coil terminal and the outer periphery of the yoke is shortened to ensure the reliability of insulation. Difficult to do.

この発明が解決しようとする課題は、ティースよりもヨークの方がステータ軸方向の厚さが大きい回転電機用ステータの省スペース化を図るとともに、インシュレータによる絶縁の信頼性を確保することである。   The problem to be solved by the present invention is to reduce the space of a stator for a rotating electrical machine in which the yoke is thicker in the stator axial direction than the teeth, and to ensure the reliability of insulation by the insulator.

上記の課題を解決するために、ステータコアの環状のヨークからステータ内周側に延出するティースとそのティースに巻回されるコイルとの間に組み込まれる筒部と、その筒部のステータ外周側の端に形成されたフランジ部と、そのフランジ部からステータ外周側に延出する第１延出部と、その第１延出部からステータ軸方向でコア中心方向に延出する第２延出部と、前記コイルからステータ外周側に引き出される巻き始め端末が係止される巻き始め端末係止部と、前記コイルからステータ外周側に引き出される巻き終わり端末が係止される巻き終わり端末係止部とを有し、前記フランジ部は前記ヨークの内周面に重なり、前記第１延出部は前記ヨークの軸方向端面に重なり、前記第２延出部は前記ヨークの外周面を囲うように延出する構成をインシュレータに採用した。   In order to solve the above-mentioned problem, a cylindrical portion incorporated between a tooth extending from the annular yoke of the stator core toward the stator inner peripheral side and a coil wound around the tooth, and a stator outer peripheral side of the cylindrical portion A flange portion formed at the end of the flange, a first extension portion extending from the flange portion toward the outer periphery of the stator, and a second extension extending from the first extension portion toward the core center in the stator axial direction A winding start terminal locking portion in which a winding start terminal pulled out from the coil to the stator outer peripheral side is locked, and a winding end terminal locking in which a winding end terminal pulled out from the coil to the stator outer peripheral side is locked The flange portion overlaps the inner peripheral surface of the yoke, the first extension portion overlaps the axial end surface of the yoke, and the second extension portion surrounds the outer peripheral surface of the yoke. Configuration extending to It was adopted in the insulator.

また、この発明においては、上記のインシュレータを用いた分割ステータとして、円環状に配置された状態で前記環状のヨークを構成する円弧状のヨークとそのヨークからステータ内周側に延出するティースとからなる分割コアと、その分割コアの前記ティースに装着された上記インシュレータと、そのインシュレータの前記筒部を介して前記分割コアのティースに巻回されたコイルとからなり、前記円弧状のヨークは、前記ティースよりもステータ軸方向の厚さが大きい分割ステータを提供する。   Further, in the present invention, as a split stator using the above insulator, an arcuate yoke constituting the annular yoke in an annularly arranged state, and teeth extending from the yoke to the stator inner peripheral side, A split core, the insulator attached to the teeth of the split core, and a coil wound around the teeth of the split core via the cylindrical portion of the insulator, the arcuate yoke is A split stator having a greater stator axial thickness than the teeth is provided.

また、この分割ステータを用いた回転電機用ステータとして、円環状に配置された上記の分割ステータと、その各分割ステータを外周から締め付ける筒状のハウジングと、前記各分割ステータのコイルに電力を供給するリング状のバスバーユニットとを有し、前記バスバーユニットは、バスバーユニットに組み込まれた給電用バスバーからステータ外周側に延出する給電端子と、バスバーユニットに組み込まれた中性点バスバーからステータ外周側に延出する中性点端子とを有し、前記コイルの巻き始め端末と巻き終わり端末のうちの一方の端末が前記給電端子に接続され、他方の端末が前記中性点端子に接続された回転電機用ステータを提供する。   In addition, as a stator for a rotating electrical machine using this divided stator, power is supplied to the above-described divided stator arranged in an annular shape, a cylindrical housing that tightens each divided stator from the outer periphery, and a coil of each divided stator. A ring-shaped bus bar unit that has a power supply terminal extending from the power supply bus bar built into the bus bar unit to the outer periphery of the stator, and a neutral point bus bar built into the bus bar unit. A neutral point terminal extending to the side, one of the winding start terminal and the winding end terminal of the coil being connected to the power supply terminal, and the other terminal being connected to the neutral point terminal. A stator for a rotating electric machine is provided.

この発明のインシュレータは、ヨークの軸方向端面に重なる第１延出部に、巻き始め端末係止部と巻き終わり端末係止部が設けられているので、巻き始め端末係止部に係止されたコイルの巻き始め端末と巻き終わり端末係止部に係止されたコイルの巻き終わり端末に、給電用バスバーからステータ外周側に延出する給電端子と、中性点バスバーからステータ外周側に延出する中性点端子とをそれぞれ接続することができ、このとき、給電用バスバーと中性点バスバーがステータ軸方向に見てヨークと重ならないので、ステータ軸方向の厚さを抑えることができる。   In the insulator according to the present invention, the first extending portion that overlaps the axial end surface of the yoke is provided with the winding start terminal locking portion and the winding end terminal locking portion, so that it is locked to the winding start terminal locking portion. The coil winding start terminal and the coil end terminal locked by the coil end terminal locking part are connected to the power supply terminal extending from the power supply bus bar to the stator outer peripheral side, and from the neutral point bus bar to the stator outer peripheral side. The neutral point terminal can be connected to each other. At this time, the power supply bus bar and the neutral point bus bar do not overlap with the yoke when viewed in the stator axial direction, so that the thickness in the stator axial direction can be suppressed. .

また、ヨークの外周面を囲うように延出する第２延出部が、給電端子および中性点端子のコイル端末への接続部分とヨークの外周との間を絶縁するので、絶縁の信頼性が高い。   Further, since the second extending portion extending so as to surround the outer peripheral surface of the yoke insulates between the connection portion of the power supply terminal and the neutral point terminal to the coil terminal and the outer periphery of the yoke, the reliability of the insulation Is expensive.

図１および図２に、この発明の実施形態のインシュレータを組み込んだ回転電機用ステータを示す。この回転電機用ステータは、円環状に配置した分割ステータ１と、その分割ステータ１を外周から締め付ける筒状のハウジング２と、各分割ステータに電力を供給するリング状のバスバーユニット３とからなる。   1 and 2 show a stator for a rotating electrical machine in which an insulator according to an embodiment of the present invention is incorporated. This stator for a rotating electrical machine includes a split stator 1 arranged in an annular shape, a cylindrical housing 2 that fastens the split stator 1 from the outer periphery, and a ring-shaped bus bar unit 3 that supplies power to each split stator.

図３および図４に示すように、分割ステータ１は、円弧状のヨーク４と、ヨーク４からステータ内周側に延出するティース５とからなる分割コア６を有し、ティース５には、インシュレータ７を介してコイル８が巻回されている。分割コア６は、金属磁性粉末の圧粉体からなり、図２に示すように分割ステータ１を円環状に配置した状態で、円弧状のヨーク４が連なって環状のヨーク９を構成する。また、ヨーク４は、ティース５よりもステータ軸方向の厚さが大きくなっており、これにより、ヨーク９が形成する磁路の断面積を確保している。   As shown in FIGS. 3 and 4, the split stator 1 has a split core 6 composed of an arcuate yoke 4 and a tooth 5 extending from the yoke 4 toward the inner periphery of the stator. A coil 8 is wound through an insulator 7. The split core 6 is made of a green compact of metal magnetic powder, and an arcuate yoke 4 is connected to form an annular yoke 9 with the split stator 1 arranged in an annular shape as shown in FIG. Further, the yoke 4 is thicker in the stator axial direction than the teeth 5, thereby ensuring a cross-sectional area of a magnetic path formed by the yoke 9.

インシュレータ７は、図４に示すように、ティース５とコイル８の間に組み込まれる筒部１０と、筒部１０の一端と他端にそれぞれ形成されたフランジ部１１，１２と、ヨーク４の内周面に重なったステータ外周側のフランジ部１２からステータ外周側に延出してヨーク９の軸方向端面に重なる第１延出部１３と、第１延出部からステータ軸方向でコア中心方向に延出してヨーク４の外周面を囲うように延出する第２延出部１４とを有する。筒部１０、フランジ部１１，１２、第１延出部１３、第２延出部１４は、いずれも絶縁材料からなる。   As shown in FIG. 4, the insulator 7 includes a cylindrical portion 10 incorporated between the tooth 5 and the coil 8, flange portions 11 and 12 formed at one end and the other end of the cylindrical portion 10, A first extending portion 13 that extends from the flange portion 12 on the outer periphery of the stator that overlaps the peripheral surface to the outer peripheral side of the stator and overlaps the axial end surface of the yoke 9, and extends from the first extending portion toward the core in the stator axial direction. A second extending portion extending to surround the outer peripheral surface of the yoke. The cylinder part 10, the flange parts 11 and 12, the first extension part 13, and the second extension part 14 are all made of an insulating material.

第１延出部１３には、図３に示すように、ステータ周方向に隣り合う巻き始め端末案内片１５と巻き始め端末係止片１６が形成されるとともに、ステータ周方向に隣り合う巻き終わり端末案内片１７と巻き終わり端末係止片１８が形成され、巻き始め端末係止片１６と巻き終わり端末係止片１８には、一端が開放したスリット１９，２０がそれぞれ形成されている。   As shown in FIG. 3, the first extending portion 13 is formed with a winding start terminal guide piece 15 and a winding start terminal locking piece 16 that are adjacent to each other in the stator circumferential direction, and at the end of winding that is adjacent to the stator circumferential direction. The terminal guide piece 17 and the winding end terminal locking piece 18 are formed, and the winding start terminal locking piece 16 and the winding end terminal locking piece 18 are respectively formed with slits 19 and 20 having one end opened.

コイル８は、ティース５に巻回された巻回部８Ｃから巻き始め端末８Ａと巻き終わり端末８Ｂがステータ外周側に引き出されている。巻き始め端末８Ａは、巻き始め端末案内片１５に引っ掛けられた状態で巻き始め端末係止片１６のスリット１９に係止され、巻き終わり端末８Ｂも、巻き終わり端末案内片１７に引っ掛けられた状態で巻き終わり端末係止片１８のスリット２０に係止されている。   The coil 8 has a winding start terminal 8 </ b> A and a winding end terminal 8 </ b> B drawn out from the winding portion 8 </ b> C wound around the tooth 5 to the stator outer peripheral side. The winding start terminal 8A is locked to the slit 19 of the winding start terminal locking piece 16 while being hooked on the winding start terminal guide piece 15, and the winding end terminal 8B is also hooked to the winding end terminal guide piece 17 The end of the winding is locked in the slit 20 of the terminal locking piece 18.

バスバーユニット３は、図５に示すように、外周側から内周側に向けて順に同心配置されたリング状の給電用バスバー２１Ｕ，２１Ｖ，２１Ｗと、各給電用バスバー２１Ｕ，２１Ｖ，２１Ｗよりも外周側に配置された中性点バスバー２１Ｎと、各給電用バスバー２１Ｕ，２１Ｖ，２１Ｗと中性点バスバー２１Ｎを保持するホルダー２２とを有する。給電用バスバー２１Ｕ，２１Ｖ，２１Ｗには、３相交流のＵ，Ｖ，Ｗ相の電源に接続される一次側端子２３Ｕ，２３Ｖ，２３Ｗがそれぞれ設けられている。   As shown in FIG. 5, the bus bar unit 3 includes ring-shaped power supply bus bars 21U, 21V, and 21W arranged concentrically in order from the outer peripheral side toward the inner peripheral side, and the power supply bus bars 21U, 21V, and 21W. A neutral point bus bar 21N arranged on the outer peripheral side, power supply bus bars 21U, 21V, 21W and a holder 22 for holding the neutral point bus bar 21N are provided. The power supply bus bars 21U, 21V, and 21W are respectively provided with primary-side terminals 23U, 23V, and 23W that are connected to a three-phase AC U, V, and W-phase power source.

また、バスバーユニット３には、給電用バスバー２１Ｕからステータ外周側に延出する給電端子２４Ｂと、給電用バスバー２１Ｖからステータ外周側に延出する給電端子２４Ｂと、給電用バスバー２１Ｗからステータ外周側に延出する給電端子２４Ｂとがステータ周方向に順に設けられ、隣り合う給電端子２４Ｂ，２４Ｂの間に、中性点バスバー２１Ｎからステータ外周側に延出する中性点端子２４Ａが設けられている。   The bus bar unit 3 includes a power supply terminal 24B extending from the power supply bus bar 21U to the stator outer peripheral side, a power supply terminal 24B extending from the power supply bus bar 21V to the stator outer peripheral side, and a power supply bus bar 21W to the stator outer peripheral side. And a neutral point terminal 24A extending from the neutral point bus bar 21N to the stator outer peripheral side is provided between the adjacent power supply terminals 24B and 24B. Yes.

中性点端子２４Ａは、図６に示すように、中性点バスバー２１Ｎからステータ外周側に延出する延出部２５Ａと、延出部２５Ａに連なる接続部２６Ａとからなる。接続部２６Ａは、図３に示すように、ステータ周方向に見てステータ軸方向に開放するＵ状にかしめることによって、スリット１９に係止されたコイルの巻き始め端末８Ａに接続される。   As shown in FIG. 6, the neutral point terminal 24A includes an extending portion 25A extending from the neutral point bus bar 21N to the outer periphery of the stator and a connecting portion 26A connected to the extending portion 25A. As shown in FIG. 3, the connecting portion 26 </ b> A is connected to the winding start terminal 8 </ b> A of the coil locked in the slit 19 by caulking in a U shape that opens in the stator axial direction when viewed in the stator circumferential direction.

給電端子２４Ｂも、中性点端子２４Ａと同様に、給電用バスバー２１Ｕ，２１Ｖ，２１Ｗからステータ外周側に延出する延出部２５Ｂと、延出部２５Ｂに連なる接続部２６Ｂとからなる。接続部２６Ｂは、ステータ周方向に見てステータ軸方向に開放するＵ状にかしめることによって、スリット２０に係止されたコイルの巻き終わり端末８Ｂに接続される。また、各給電端子２４Ｂの接続部２６Ｂは、図５に示すように、中性点端子２４Ａの接続部２６Ａと同一円周上に配置されている。   Similarly to the neutral point terminal 24A, the power supply terminal 24B includes an extension portion 25B extending from the power supply bus bars 21U, 21V, and 21W to the stator outer peripheral side, and a connection portion 26B connected to the extension portion 25B. The connecting portion 26B is connected to the winding end terminal 8B of the coil locked in the slit 20 by caulking in a U shape that opens in the stator axial direction when viewed in the stator circumferential direction. Moreover, the connection part 26B of each electric power feeding terminal 24B is arrange | positioned on the same periphery as the connection part 26A of the neutral point terminal 24A, as shown in FIG.

この回転電機用ステータは、たとえば次のようにして組み立てることができる。まず、分割コア６にインシュレータ７を介してコイル８を巻回し、コイル８の巻き始め端末８Ａを巻き始め端末係止片１６のスリット１９に係止させるとともに、コイルの巻き終わり端末８Ｂを巻き終わり端末係止片１８のスリット２０に係止させる。このようにして形成された分割ステータ１を円環状に配置し、その外周にハウジング２を焼き嵌めする。つづいて、バスバーユニット３を分割ステータ１と同心に配置し、中性点端子２４Ａの接続部２６Ａをかしめてコイルの巻き始め端末８Ａと接合するとともに、給電端子２４Ｂの接続部２６Ｂをかしめてコイルの巻き終わり端末８Ｂと接合する。   This stator for a rotating electrical machine can be assembled, for example, as follows. First, the coil 8 is wound around the split core 6 via the insulator 7, the winding start terminal 8A of the coil 8 is started to be locked to the slit 19 of the terminal locking piece 16, and the coil winding end terminal 8B is ended. The terminal locking piece 18 is locked in the slit 20. The divided stator 1 thus formed is arranged in an annular shape, and the housing 2 is shrink-fitted on the outer periphery thereof. Subsequently, the bus bar unit 3 is disposed concentrically with the split stator 1, and the connecting portion 26A of the neutral point terminal 24A is caulked to join the coil winding start terminal 8A, and the connecting portion 26B of the feeding terminal 24B is caulked. Is joined to the winding end terminal 8B.

このインシュレータ７を用いると、図７に示すように、巻き始め端末係止片１６のスリット１９に係止されたコイルの巻き始め端末８Ａと巻き終わり端末係止片１８のスリット２０に係止されたコイルの巻き終わり端末８Ｂに、中性点バスバー２１Ｎからステータ外周側に延出する中性点端子２４Ａと、各給電用バスバー２１Ｕ，２１Ｖ，２１Ｗからステータ外周側に延出する給電端子２４Ｂとをそれぞれ接続することができる。このとき、給電用バスバー２１Ｕ，２１Ｖ，２１Ｗと中性点バスバー２１Ｎがステータ軸方向に見てヨーク４と重ならないので、ステータ軸方向の厚さが大きくなりにくく、ステータの設置スペースを抑えることができる。   When this insulator 7 is used, as shown in FIG. 7, the coil is locked by the winding start terminal 8 </ b> A of the coil locked in the slit 19 of the winding start terminal locking piece 16 and the slit 20 of the winding end terminal locking piece 18. The coil winding end terminal 8B has a neutral point terminal 24A extending from the neutral point bus bar 21N to the stator outer peripheral side, and a power supply terminal 24B extending from the power supply bus bars 21U, 21V, 21W to the stator outer peripheral side. Can be connected respectively. At this time, the power supply bus bars 21U, 21V, and 21W and the neutral point bus bar 21N do not overlap with the yoke 4 when viewed in the stator axial direction, so that the thickness in the stator axial direction is difficult to increase, and the installation space of the stator can be suppressed. it can.

また、ヨーク４の外周面を囲うように延出する第２延出部１４が、中性点端子２４Ａの接続部２６Ａとヨーク９の外周との間を絶縁するとともに、給電端子２４Ｂの接続部２６Ｂとヨーク９の外周との間を絶縁するので、絶縁の信頼性が高い。   Further, the second extending portion 14 extending so as to surround the outer peripheral surface of the yoke 4 insulates the connecting portion 26A of the neutral point terminal 24A from the outer periphery of the yoke 9, and also connects the feeding terminal 24B. Since the insulation between 26B and the outer periphery of the yoke 9 is insulated, the insulation reliability is high.

上記実施形態では、インシュレータ７を、ヨーク４の厚さがティース５よりも大きい分割コア６のティース５に装着しているが、このインシュレータ７は、環状の電磁鋼板の積層体で構成したステータコアのティースに装着してもよい。   In the above embodiment, the insulator 7 is mounted on the tooth 5 of the split core 6 in which the thickness of the yoke 4 is larger than that of the tooth 5. The insulator 7 is a stator core formed of a laminated body of annular electromagnetic steel plates. It may be attached to the teeth.

また、上記実施形態では、コイルの巻き始め端末８Ａを中性点端子２４Ａに接続するとともにコイルの巻き終わり端末８Ｂを給電端子２４Ｂに接続しているが、コイルの巻き始め端末８Ａを給電端子２４Ｂに接続するとともにコイルの巻き終わり端末８Ｂを中性点端子２４Ａに接続するようにしてもよい。   In the above embodiment, the coil winding start terminal 8A is connected to the neutral point terminal 24A and the coil winding end terminal 8B is connected to the power supply terminal 24B. However, the coil winding start terminal 8A is connected to the power supply terminal 24B. The coil winding end terminal 8B may be connected to the neutral point terminal 24A.

図では、２本のコイルを並列に巻回してコイルの占積率を高めているが、１本のコイルを巻回するようにしてもよい。   In the figure, two coils are wound in parallel to increase the space factor of the coils, but one coil may be wound.

今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した意味ではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。   The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

この発明の実施形態のインシュレータを組み込んだ回転電機用ステータを示す平面図The top view which shows the stator for rotary electric machines incorporating the insulator of embodiment of this invention 図１の回転電機用ステータの軸直角断面図1 is a cross-sectional view perpendicular to the axis of the stator for a rotating electrical machine in FIG. 図１の回転電機用ステータの分解斜視図1 is an exploded perspective view of the stator for a rotating electrical machine in FIG. 図３の分割ステータをステータ軸を含む平面に沿って切断した状態の斜視図The perspective view of the state which cut | disconnected the division | segmentation stator of FIG. 3 along the plane containing a stator axis | shaft 図１のバスバーユニットの平面図Plan view of the bus bar unit of FIG. 図５のバスバーユニットの拡大斜視図An enlarged perspective view of the bus bar unit of FIG. 図１の回転電機用ステータのステータ軸を含む平面に沿った断面図Sectional drawing along the plane containing the stator axis | shaft of the stator for rotary electric machines of FIG.

符号の説明Explanation of symbols

１ 分割ステータ
２ ハウジング
３ バスバーユニット
４ ヨーク
５ ティース
６ 分割コア
７ インシュレータ
８ コイル
８Ａ 巻き始め端末
８Ｂ 巻き終わり端末
９ ヨーク
１０ 筒部
１２ フランジ部
１３ 第１延出部
１４ 第２延出部
１６ 巻き始め端末係止片
１８ 巻き終わり端末係止片
２１Ｕ，２１Ｖ，２１Ｗ 給電用バスバー
２１Ｎ 中性点バスバー
２４Ａ 中性点端子
２４Ｂ 給電端子 DESCRIPTION OF SYMBOLS 1 Split stator 2 Housing 3 Bus bar unit 4 Yoke 5 Teeth 6 Split core 7 Insulator 8 Coil 8A Winding start terminal 8B Winding end terminal 9 York 10 Tube part 12 Flange part 13 1st extension part 14 2nd extension part 16 Start of winding Terminal locking piece 18 End of winding terminal locking piece 21U, 21V, 21W Power supply bus bar 21N Neutral point bus bar 24A Neutral point terminal 24B Power supply terminal

Claims (3)

ステータコアの環状のヨーク（９）からステータ内周側に延出するティース（５）とそのティース（５）に巻回されるコイル（８）との間に組み込まれる筒部（１０）と、その筒部（１０）のステータ外周側の端に形成されたフランジ部（１２）と、そのフランジ部（１２）からステータ外周側に延出する第１延出部（１３）と、その第１延出部（１３）からステータ軸方向でコア中心方向に延出する第２延出部（１４）と、前記第１延出部（１３）に設けられた巻き始め端末係止部（１６）と、前記第１延出部（１３）に設けられた巻き終わり端末係止部（１８）とを有するインシュレータ（７）であって、前記フランジ部（１２）は前記ヨーク（９）の内周面に重なり、前記第１延出部（１３）は前記ヨーク（９）の軸方向端面に重なり、前記第２延出部（１４）は前記ヨーク（９）の外周面を囲うように延出し、前記巻き始め端末係止部（１６）は前記コイルの巻き始め端末（８Ａ）を係止させ、前記巻き終わり端末係止部（１８）は前記コイルの巻き終わり端末（８Ｂ）を係止させるインシュレータ。   A cylindrical portion (10) incorporated between a tooth (5) extending from the annular yoke (9) of the stator core to the stator inner peripheral side and a coil (8) wound around the tooth (5); A flange portion (12) formed at an end of the cylindrical portion (10) on the stator outer peripheral side, a first extension portion (13) extending from the flange portion (12) to the stator outer peripheral side, and a first extension thereof A second extending portion (14) extending from the protruding portion (13) toward the center of the core in the stator axial direction, and a winding start terminal locking portion (16) provided on the first extending portion (13). , An insulator (7) having a winding end terminal locking portion (18) provided in the first extension portion (13), wherein the flange portion (12) is an inner peripheral surface of the yoke (9). The first extending portion (13) overlaps the axial end surface of the yoke (9). The second extension part (14) extends so as to surround the outer peripheral surface of the yoke (9), the winding start terminal locking part (16) locks the winding start terminal (8A) of the coil, The winding end terminal locking portion (18) is an insulator for locking the winding end terminal (8B) of the coil. 円環状に配置された状態で前記環状のヨーク（９）を構成する円弧状のヨーク（４）とそのヨーク（４）からステータ内周側に延出するティース（５）とからなる分割コア（６）と、その分割コア（６）の前記ティース（５）に装着された請求項１に記載のインシュレータ（７）と、そのインシュレータ（７）の前記筒部（１０）を介して前記分割コア（６）のティース（５）に巻回されたコイル（８）とからなる分割ステータ（１）であって、前記円弧状のヨーク（４）は、前記ティース（５）よりもステータ軸方向の厚さが大きい分割ステータ。   A split core comprising an arcuate yoke (4) constituting the annular yoke (9) and teeth (5) extending from the yoke (4) toward the inner periphery of the stator in an annularly arranged state ( 6) and the insulator (7) according to claim 1 attached to the teeth (5) of the split core (6), and the split core via the tubular portion (10) of the insulator (7). A split stator (1) comprising a coil (8) wound around a tooth (5) of (6), wherein the arc-shaped yoke (4) is closer to the stator axial direction than the tooth (5). Split stator with large thickness. 円環状に配置された請求項２の分割ステータ（１）と、その各分割ステータ（１）を外周から締め付ける筒状のハウジング（２）と、前記各分割ステータ（１）のコイル（８）に電力を供給する環状のバスバーユニット（３）とを有する回転電機用ステータであって、前記バスバーユニット（３）は、バスバーユニット（３）に組み込まれた給電用バスバー（２１Ｕ，２１Ｖ，２１Ｗ）からステータ外周側に延出する給電端子（２４Ｂ）と、バスバーユニット（３）に組み込まれた中性点バスバー（２１Ｎ）からステータ外周側に延出する中性点端子（２４Ａ）とを有し、前記コイルの巻き始め端末（８Ａ）と巻き終わり端末（８Ｂ）のうちの一方の端末が前記給電端子（２４Ｂ）に接続され、他方の端末が前記中性点端子（２４Ａ）に接続された回転電機用ステータ。   The split stator (1) according to claim 2, which is arranged in an annular shape, a cylindrical housing (2) for tightening each split stator (1) from the outer periphery, and a coil (8) of each split stator (1) A stator for a rotating electrical machine having an annular bus bar unit (3) for supplying electric power, wherein the bus bar unit (3) is fed from a power supply bus bar (21U, 21V, 21W) incorporated in the bus bar unit (3). A power supply terminal (24B) extending to the outer peripheral side of the stator, and a neutral point terminal (24A) extending to the outer peripheral side of the stator from the neutral point bus bar (21N) incorporated in the bus bar unit (3), One terminal of the coil winding start terminal (8A) and winding end terminal (8B) is connected to the power supply terminal (24B), and the other terminal is connected to the neutral point terminal (24A). Stator for rotary electric machine that has been.
JP2007121547A 2007-05-02 2007-05-02 Insulator, split stator, and stator for rotating electrical machine Expired - Fee Related JP4914287B2 (en)

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