JP2007174869A - Insulator, stator assembly, segment stator, and stator for dynamo-electric machine - Google Patents

Insulator, stator assembly, segment stator, and stator for dynamo-electric machine Download PDF

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JP2007174869A
JP2007174869A JP2005372867A JP2005372867A JP2007174869A JP 2007174869 A JP2007174869 A JP 2007174869A JP 2005372867 A JP2005372867 A JP 2005372867A JP 2005372867 A JP2005372867 A JP 2005372867A JP 2007174869 A JP2007174869 A JP 2007174869A
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stator
insulator
terminal
bus bar
coil
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Toshiyuki Sonoda
敏之 園田
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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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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

Abstract

<P>PROBLEM TO BE SOLVED: To simply connect the coil of a stator for dynamo-electric machine with a bus bar for feed. <P>SOLUTION: An insulator which is interposed between the split core 8 of the stator for dynamo-electric machine and a coil 10 wound on the split core 8 adopts such constitution that it includes a tube 2, a flange part 3 which is made at one end of the tube 2, a stair part 5 which extends to the side opposite to the tube 2 from the flange part 3, and a terminal 6 which is provided at the stair part 5, and that for the stair part 5, the thickness becomes smaller by stages as it goes away from the flange part 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

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）用ステータに関する。   The present invention relates to a stator for a rotating electric machine (for example, an electric motor) incorporated in a hybrid vehicle or a fuel cell vehicle.

回転電機用ステータとして、インシュレータを装着した分割コアにコイルを巻回してセグメントステータを形成し、そのセグメントステータを円環状に配置し、各々のセグメントステータに固定されたコイル側端子に、円環状のバスバーユニットに固定されたバスバー側端子をそれぞれ接続したものが知られている（特許文献１）。   As a stator for a rotating electrical machine, a coil is wound around a split core equipped with an insulator to form a segment stator, the segment stator is arranged in an annular shape, and the annular terminal is fixed to each coil-side terminal fixed to each segment stator. The thing which connected the bus-bar side terminal fixed to the bus-bar unit is known (patent document 1).

しかし、コイル側端子とバスバー側端子を接続する際、コイル側端子の位置とそのコイル側端子に対応するバスバー側端子の位置をひとつひとつ合致させていくと、各端子の位置ずれが累積し、すべての端子を合致させるのが難しくなる。そのため、コイル側端子とバスバー側端子を接続する作業が煩雑であった。   However, when connecting the coil side terminal and the bus bar side terminal, if the position of the coil side terminal and the position of the bus bar side terminal corresponding to the coil side terminal are matched one by one, the displacement of each terminal will accumulate, It becomes difficult to match the terminals. Therefore, the operation | work which connects a coil side terminal and a bus-bar side terminal was complicated.

特開２００５−５１９９９号公報JP 2005-51999 A

この発明が解決しようとする課題は、回転電機用ステータのコイルと給電用バスバーの接続を簡単に行えるようにすることである。   The problem to be solved by the present invention is to enable easy connection between a coil of a stator for a rotating electrical machine and a power supply bus bar.

上記の課題を解決するために、回転電機用ステータの分割コアとその分割コアに巻回されるコイルとの間に介在するインシュレータについて、筒部と、その筒部の一端に形成されたフランジ部と、そのフランジ部から前記筒部とは反対側に延出する階段部と、その階段部に設けられた端子とを含み、前記階段部は、前記フランジ部から遠ざかるにつれて厚さが段階的に小さくなっている構成を採用した。   In order to solve the above problems, a tubular portion and a flange portion formed at one end of the tubular portion of the insulator interposed between the divided core of the stator for a rotating electrical machine and a coil wound around the divided core And a staircase portion extending from the flange portion to the opposite side of the cylindrical portion, and a terminal provided on the staircase portion, wherein the staircase portion has a stepwise thickness as the distance from the flange portion increases. Adopted a smaller configuration.

この発明では、上記インシュレータを分割コアに装着したステータアセンブリ、そのステータアセンブリのインシュレータ上にコイルを巻回し、そのコイルを前記端子に接続したセグメントステータ、およびそのセグメントステータを円環状に配置し、前記端子に給電用バスバーを接続した回転電機用ステータも併せて提供する。   In the present invention, a stator assembly in which the insulator is mounted on a split core, a coil is wound on the insulator of the stator assembly, a segment stator in which the coil is connected to the terminal, and the segment stator is arranged in an annular shape, A stator for a rotating electrical machine having a power supply bus bar connected to a terminal is also provided.

この発明のインシュレータは、分割コアに装着して円環状に配置し、そのインシュレータの階段部の別々の段に、ステータ周方向に延びる複数の給電用バスバーを割り振って巻き付けることにより、各給電用バスバーを互いに離れた状態に位置決めすることができる。また、円環状に配置したインシュレータの端子の位置にばらつきがあっても、その端子の位置に合わせて給電用バスバーを巻き付けて端子の位置のばらつきを吸収することができるので、給電用バスバーとコイルの接続が簡単である。   The insulator according to the present invention is mounted on a split core and arranged in an annular shape, and a plurality of power supply bus bars extending in the circumferential direction of the stator are allocated and wound around different steps of the stepped portion of the insulator, thereby winding each power supply bus bar. Can be positioned apart from each other. In addition, even if there are variations in the position of the terminals of the insulators arranged in an annular shape, the power supply bus bar can be wound around the terminals to absorb the variations in the position of the terminals. Is easy to connect.

図１に、この発明のインシュレータの実施形態を示す。このインシュレータ１は、回転電機用ステータの分割コアのティース部に装着する角筒状の筒部２と、筒部２の一端と他端にそれぞれ形成したフランジ部３、４と、フランジ部３から筒部２とは反対側に延出する階段部５とを有する。筒部２とフランジ部３、４と階段部５はいずれも絶縁体からなる。   FIG. 1 shows an embodiment of an insulator according to the present invention. This insulator 1 includes a square cylindrical tube portion 2 attached to a tooth portion of a split core of a stator for a rotating electrical machine, flange portions 3 and 4 formed at one end and the other end of the cylindrical portion 2, and a flange portion 3. It has the step part 5 extended on the opposite side to the cylinder part 2. As shown in FIG. The cylindrical portion 2, the flange portions 3, 4 and the staircase portion 5 are all made of an insulator.

階段部５は、ステータ径方向外側のフランジ部３のステータ軸方向に張り出した位置から、ステータ径方向の外方に延出しており、ステータ軸方向の厚さがフランジ部３から遠ざかるにつれて段階的に小さくなる形状である。   The staircase portion 5 extends outwardly in the stator radial direction from a position where the flange portion 3 on the outer side in the stator radial direction extends in the stator axial direction, and is stepped as the thickness in the stator axial direction increases away from the flange portion 3. The shape becomes smaller.

階段部５には、給電用バスバーとコイルとを接続する端子６が取り付けられている。給電用バスバーは、Ｕ、Ｖ、Ｗの３相あり、そのいずれかの給電用バスバーに端子６が接続される。Ｕ相に接続される端子６と、Ｖ相に接続される端子６と、Ｗ相に接続される端子６は、それぞれ、階段部５の別々の段に取り付けられる。   A terminal 6 for connecting the power supply bus bar and the coil is attached to the staircase portion 5. The power supply bus bar has three phases of U, V, and W, and the terminal 6 is connected to one of the power supply bus bars. The terminal 6 connected to the U-phase, the terminal 6 connected to the V-phase, and the terminal 6 connected to the W-phase are respectively attached to separate steps of the staircase unit 5.

端子６は、図２に示すように、給電用バスバーに接続されるバスバー接続部６ａと、コイルに接続されるコイル接続部６ｂと、バスバー接続部６ａとコイル接続部６ｂを連結する連結部６ｃとからなる。バスバー接続部６ａは、ステータ径方向の外側に開放する断面Ｕ状に形成され、ステータ周方向に延びる給電用バスバーを受け入れ可能である。一方、コイル接続部６ｂは、バスバー接続部６ａよりもステータ径方向の内方に形成されており、バスバー接続部６ａに接続する給電用バスバーと干渉しないようになっている。連結部６ｃは、階段部５に形成した保持片５ａと階段部の立ち上がり面５ｂの間に挟まれて端子６の位置を保持する。   As shown in FIG. 2, the terminal 6 includes a bus bar connecting portion 6a connected to the power supply bus bar, a coil connecting portion 6b connected to the coil, and a connecting portion 6c for connecting the bus bar connecting portion 6a and the coil connecting portion 6b. It consists of. The bus bar connecting portion 6a is formed in a cross-sectional U shape that opens to the outside in the stator radial direction, and can receive a power supply bus bar extending in the stator circumferential direction. On the other hand, the coil connection part 6b is formed inward in the stator radial direction with respect to the bus bar connection part 6a, and does not interfere with the power supply bus bar connected to the bus bar connection part 6a. The connecting portion 6c is sandwiched between the holding piece 5a formed on the step portion 5 and the rising surface 5b of the step portion to hold the position of the terminal 6.

また、このインシュレータ１は、図１に示す分割線７の位置でステータ軸方向に分割することができ、図３に示すように分割コア８を挟み込んで分割コア８に装着可能となっている。   Further, the insulator 1 can be divided in the stator axial direction at the position of the dividing line 7 shown in FIG. 1, and can be attached to the divided core 8 by sandwiching the divided core 8 as shown in FIG. 3.

このインシュレータ１を用いたステータの組み立ては、たとえば次のようにして行なうことができる。   The assembly of the stator using this insulator 1 can be performed, for example, as follows.

まず、図３に示すようにインシュレータ１を分割コア８に装着してステータアセンブリ９を形成する。つぎに、図４に示すようにステータアセンブリ９にコイル１０を巻回し、コイル１０を端子６のコイル接続部６ｂに接続してセグメントステータ１１ｖを形成する。コイル１０を巻回するとき、インシュレータ１の筒部２の両端からフランジ部３、４が張り出しているのでコイル線が筒部２からはみ出さない。同様に、階段部５の別の段に端子６を取り付けたセグメントステータ１１ｕ、１１ｗを形成する。   First, as shown in FIG. 3, the insulator 1 is mounted on the split core 8 to form the stator assembly 9. Next, as shown in FIG. 4, the coil 10 is wound around the stator assembly 9, and the coil 10 is connected to the coil connection portion 6 b of the terminal 6 to form the segment stator 11 v. When the coil 10 is wound, since the flange portions 3 and 4 protrude from both ends of the tubular portion 2 of the insulator 1, the coil wire does not protrude from the tubular portion 2. Similarly, segment stators 11u and 11w having terminals 6 attached to other steps of the staircase portion 5 are formed.

つづいて、図５に示すように、Ｕ相に対応するセグメントステータ１１ｕと、Ｖ相に対応するセグメントステータ１１ｖと、Ｗ相に対応するセグメントステータ１１ｗを、順に円環状に配置し、そのセグメントステータ１１ｕ、１１ｖ、１１ｗの外周に筒状のハウジング１２を焼き嵌めする。   Next, as shown in FIG. 5, a segment stator 11u corresponding to the U phase, a segment stator 11v corresponding to the V phase, and a segment stator 11w corresponding to the W phase are sequentially arranged in an annular shape. The cylindrical housing 12 is shrink-fitted on the outer peripheries of 11u, 11v, and 11w.

その後、図６に示すように、階段部５にＵ相のバスバー１３ｕを巻き付けて、Ｕ相に対応するセグメントステータ１１ｕの各端子６のバスバー接続部６ａにバスバー１３ｕを挿入し、バスバー接続部６ａをかしめて接続する。このバスバー１３ｕは、絶縁被膜がなされているが、セグメントステータ１１ｕの各端子６の位置で被膜が除去されている。同様に、Ｖ相のバスバー１３ｖをＶ相に対応するセグメントステータ１１ｖの各端子６に接続し、Ｗ相のバスバー１３ｗもＷ相に対応するセグメントステータ１１ｗの各端子６に接続する。   Thereafter, as shown in FIG. 6, a U-phase bus bar 13u is wound around the staircase portion 5, and the bus bar 13u is inserted into the bus bar connection portion 6a of each terminal 6 of the segment stator 11u corresponding to the U phase. Crimp and connect. The bus bar 13u has an insulating coating, but the coating is removed at the position of each terminal 6 of the segment stator 11u. Similarly, the V-phase bus bar 13v is connected to each terminal 6 of the segment stator 11v corresponding to the V-phase, and the W-phase bus bar 13w is also connected to each terminal 6 of the segment stator 11w corresponding to the W-phase.

このように、このインシュレータ１は、分割コア８に装着して円環状に配置した状態で、給電用バスバー１３ｕ、１３ｖ、１３ｗを階段部５の別々の段に割り振って巻き付けることにより、給電用バスバー１３ｕ、１３ｖ、１３ｗを互いに離れた状態に位置決めすることができる。このとき、円環状に配置したインシュレータ１の端子６の位置にばらつきがあっても、各端子６の位置に合わせて給電用バスバー１３ｕ、１３ｖ、１３ｗを巻き付けて端子６の位置のばらつきを吸収することができるので、給電用バスバー１３ｕ、１３ｖ、１３ｗとコイル１０の接続が簡単である。   As described above, the insulator 1 is attached to the split core 8 and arranged in an annular shape, and the power supply bus bars 13u, 13v, and 13w are allocated to the different steps of the staircase portion 5 and wound, whereby the power supply bus bar 13u, 13v, and 13w can be positioned in a state separated from each other. At this time, even if the positions of the terminals 6 of the insulator 1 arranged in a ring shape vary, the power supply bus bars 13u, 13v, and 13w are wound around the terminals 6 to absorb the variations in the positions of the terminals 6. Therefore, the connection between the power supply bus bars 13u, 13v, 13w and the coil 10 is simple.

上記実施形態では、バスバー接続部６ａをかしめて端子６とバスバー１３ｕ、１３ｖ、１３ｗをつないでいるが、バスバー接続部６ａとバスバー１３ｕ、１３ｖ、１３ｗを溶接（たとえばＴＩＧ溶接）してもよい。また、端子６のバスバー接続部６ａは、たとえば図７に示すように断面Ｌ状に形成し、バスバーに溶接して接続するようにしてもよい。このように溶接で接続する場合、階段部５に取り付けた端子６の上方が開放しているので、上方からＴＩＧ溶接することができ、作業がしやすい。   In the above embodiment, the bus bar connecting portion 6a is caulked to connect the terminal 6 and the bus bars 13u, 13v, 13w, but the bus bar connecting portion 6a and the bus bars 13u, 13v, 13w may be welded (for example, TIG welding). Further, the bus bar connecting portion 6a of the terminal 6 may be formed in a cross-sectional L shape as shown in FIG. 7, for example, and welded to the bus bar for connection. Thus, when connecting by welding, since the upper part of the terminal 6 attached to the step part 5 is open | released, TIG welding can be performed from upper direction and work is easy.

また、端子６の階段部５への取り付けは、たとえば接着剤で行なってもよく、インシュレータ１を射出成形する際に端子６の一部を階段部５に埋設させることにより行なってもよい。   The terminal 6 may be attached to the stepped portion 5 with, for example, an adhesive, or may be performed by embedding part of the terminal 6 in the stepped portion 5 when the insulator 1 is injection molded.

上記実施形態では、階段部５を３段にし、Ｕ、Ｖ、Ｗの３相の給電用バスバー１３ｕ、１３ｖ、１３ｗを各段に割り当てているが、階段部５を４段にし、中性点のバスバーを加えてもよい。   In the above embodiment, the staircase portion 5 has three steps, and U, V, and W three-phase power supply bus bars 13u, 13v, and 13w are assigned to each step. You may add a bus bar.

この発明のインシュレータの実施形態を示す斜視図The perspective view which shows embodiment of the insulator of this invention 図１のインシュレータの端子を説明する斜視図The perspective view explaining the terminal of the insulator of FIG. 図１のインシュレータを分割コアに装着したステータアセンブリを示す斜視図The perspective view which shows the stator assembly which attached the insulator of FIG. 1 to the split core. 図３のステータアセンブリのインシュレータにコイルを巻回したセグメントステータを示す斜視図The perspective view which shows the segment stator which wound the coil around the insulator of the stator assembly of FIG. 図４のセグメントステータを用いたステータの組み立て過程を示す斜視図The perspective view which shows the assembly process of the stator using the segment stator of FIG. 図４のセグメントステータを用いたステータを示す斜視図The perspective view which shows the stator using the segment stator of FIG. 図１のインシュレータに取り付ける端子の変形例を示す斜視図The perspective view which shows the modification of the terminal attached to the insulator of FIG.

符号の説明Explanation of symbols

１ インシュレータ
２ 筒部
３、４ フランジ部
５ 階段部
６ 端子
８ 分割コア
９ ステータアセンブリ
１０ コイル
１１ｕ、１１ｖ、１１ｗ セグメントステータ
１３ｕ、１３ｖ、１３ｗ 給電用バスバー DESCRIPTION OF SYMBOLS 1 Insulator 2 Cylindrical part 3, 4 Flange part 5 Step part 6 Terminal 8 Split core 9 Stator assembly 10 Coil 11u, 11v, 11w Segment stator 13u, 13v, 13w Bus bar for electric power feeding

Claims (4)

回転電機用ステータの分割コア８とその分割コア８に巻回されるコイル１０との間に介在するインシュレータであって、筒部２と、その筒部２の一端に形成されたフランジ部３と、そのフランジ部３から前記筒部２とは反対側に延出する階段部５と、その階段部５に設けられた端子６とを含み、前記階段部５は、前記フランジ部３から遠ざかるにつれて厚さが段階的に小さくなっていることを特徴とするインシュレータ。   An insulator interposed between a split core 8 of a stator for a rotating electrical machine and a coil 10 wound around the split core 8, comprising a tube portion 2 and a flange portion 3 formed at one end of the tube portion 2. And a staircase portion 5 extending from the flange portion 3 to the opposite side of the cylindrical portion 2 and a terminal 6 provided on the staircase portion 5, the staircase portion 5 being separated from the flange portion 3. An insulator characterized in that the thickness is gradually reduced. 請求項１に記載のインシュレータ１と、そのインシュレータ１を装着した前記分割コア８とからなるステータアセンブリ。   A stator assembly comprising the insulator 1 according to claim 1 and the split core 8 to which the insulator 1 is attached. 請求項２に記載のステータアセンブリ９と、そのスタータアセンブリ９の前記インシュレータ１上に巻回され、前記端子６に接続されたコイル１０とからなるセグメントステータ。   A segment stator comprising the stator assembly according to claim 2 and a coil 10 wound on the insulator 1 of the starter assembly 9 and connected to the terminal 6. 円環状に配置された請求項３に記載のセグメントステータと、給電用バスバーとからなり、その給電用バスバーが前記端子６に接続されている回転電機用ステータ。   A stator for a rotating electrical machine, comprising: the segment stator according to claim 3 arranged in an annular shape; and a power supply bus bar, the power supply bus bar being connected to the terminal 6.
JP2005372867A 2005-12-26 2005-12-26 Insulator, stator assembly, segment stator, and stator for dynamo-electric machine Pending JP2007174869A (en)

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US10097069B2 (en) 2013-08-27 2018-10-09 Hitachi Metals, Ltd. Electrical collecting and distributing member holding structure, electric motor, and electric motor producing method
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US10097069B2 (en) 2013-08-27 2018-10-09 Hitachi Metals, Ltd. Electrical collecting and distributing member holding structure, electric motor, and electric motor producing method
KR20150030333A (en) * 2013-09-12 2015-03-20 한라비스테온공조 주식회사 Brushless direct current motor
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JP2018007379A (en) * 2016-06-30 2018-01-11 多摩川精機株式会社 Resolver stator structure
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