JP2003204646A - Structure and method for neutral point coupling - Google Patents
Structure and method for neutral point couplingInfo
- Publication number
- JP2003204646A JP2003204646A JP2002000461A JP2002000461A JP2003204646A JP 2003204646 A JP2003204646 A JP 2003204646A JP 2002000461 A JP2002000461 A JP 2002000461A JP 2002000461 A JP2002000461 A JP 2002000461A JP 2003204646 A JP2003204646 A JP 2003204646A
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- Japan
- Prior art keywords
- phase
- neutral point
- coil
- motor
- windings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Windings For Motors And Generators (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、３相交流モータの
スター結線中の中性点の構造およびその結合方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a neutral point in a star connection of a three-phase AC motor and a connecting method thereof.
【０００２】[0002]
【従来の技術】図７は、３相交流モータのスター結線を
示す回路図である。３相交流モータは、Ｕ相コイル５
０、Ｖ相コイル５２、Ｗ相コイル５４を有し、各相のコ
イルの各巻き始め部５６ａ，５６ｂ，５６ｃは、図示し
ない電力ケーブル端子にそれぞれ接続されている。各相
のコイルの巻き終わり部は、中性点５８において結合さ
れている。中性点５８は、具体的には図８に示すよう
に、各相のコイルの巻き終わり部が、銅などの導電性の
丸端子６０に挿入された状態で通電かしめによりかしめ
られている。通常、この中性点５８は、固定子鉄心に巻
回されたコイルのコイルエンド内に埋め込まれる。2. Description of the Related Art FIG. 7 is a circuit diagram showing a star connection of a three-phase AC motor. The three-phase AC motor has a U-phase coil 5
0, V-phase coil 52, W-phase coil 54, and each winding start portion 56a, 56b, 56c of each phase coil is connected to a power cable terminal (not shown). The winding end portions of the coils of the respective phases are joined at a neutral point 58. Specifically, as shown in FIG. 8, the neutral point 58 is crimped by electric current caulking with the winding end portion of the coil of each phase inserted in a conductive round terminal 60 such as copper. Normally, this neutral point 58 is embedded in the coil end of the coil wound around the stator core.
【０００３】[0003]
【発明が解決しようとする課題】従来の３相交流モータ
の中性点は、多くの束線を１個所にまとめて通電かしめ
しているので、形状が平板的には製作しずらく、高さ方
向に大きくなる傾向があった。このため、中性点が埋め
込まれた部分のコイルエンドは、他の部分のコイルエン
ドより大きくなり、その分３相交流モータは（特に）回
転軸方向に大きくなっていた。In the neutral point of the conventional three-phase AC motor, many bundle wires are gathered in one place and the current is caulked. It tended to grow in the vertical direction. Therefore, the coil end of the portion where the neutral point is embedded becomes larger than the coil ends of the other portions, and the three-phase AC motor becomes (especially) larger in the rotational axis direction by that amount.
【０００４】また、３相交流モータのコイルエンドをプ
レス成形する際に、高さ方向に大きくなった中性点部分
の加圧時の面圧は他の個所より大きくなるので、コイル
を傷つけて絶縁破壊を来たす可能性が高くなっていた。Further, when the coil end of the three-phase AC motor is press-molded, the surface pressure at the time of pressurizing the neutral point portion which becomes large in the height direction becomes larger than that at other places, so the coil is damaged. It was more likely to cause insulation breakdown.
【０００５】そこで本発明は、上記の課題を解決するこ
とのできる中性点結合構造および中性点結合方法を提供
することを目的とする。Therefore, an object of the present invention is to provide a neutral point bonding structure and a neutral point bonding method which can solve the above problems.
【０００６】[0006]
【課題を解決するための手段】即ち、本発明は、３相交
流モータのスター結線中の中性点の結合構造であって、
導電性の接続部材が嵌められた各相の巻線の中性点端部
と、導電性の支持板と、を備え、前記各相の中性点端部
が、所定の間隔で並置された状態で支持板上に接合さ
れ、各相の巻線同士が導通している。[Means for Solving the Problems] That is, the present invention provides a coupling structure of a neutral point in a star connection of a three-phase AC motor,
A neutral point end portion of each phase winding in which a conductive connecting member is fitted and a conductive support plate are provided, and the neutral point end portions of each phase are juxtaposed at predetermined intervals. In this state, the windings of each phase are connected to each other and are electrically connected to each other.
【０００７】また、本発明は、３相交流モータのスター
結線中の中性点を結合する方法であって、各相の巻線の
中性点端部それぞれに導電性の接続部材を嵌める工程
と、導電性の支持板上に所定の間隔で並置された前記接
続部材を嵌めた各相の巻線を通電かしめする工程と、を
備える。Further, the present invention is a method for connecting neutral points in a star connection of a three-phase AC motor, in which a conductive connecting member is fitted to each neutral point end of windings of each phase. And a step of electrically caulking the windings of each phase in which the connecting members are arranged side by side on a conductive support plate at a predetermined interval.
【０００８】また、本発明は、３相交流モータのスター
結線中の中性点の結合構造であって、導電性の接続部材
が嵌められた各相の巻線の中性点端部を備え、隣り合う
中性点端部が所定の間隔で並置され、隣り合う相の巻線
同士が導通している。Further, the present invention is a neutral point coupling structure in a star connection of a three-phase AC motor, comprising a neutral point end portion of each phase winding in which a conductive connecting member is fitted. The adjacent neutral point ends are juxtaposed at a predetermined interval, and the adjacent phase windings are electrically connected to each other.
【０００９】また、本発明は、３相交流モータのスター
結線中の中性点を結合する方法であって、各相の巻線の
中性点端部それぞれに導電性の接続部材を嵌める工程
と、所定の間隔で並置された前記接続部材を嵌めた各相
の巻線を通電かしめする工程と、を備える。Further, the present invention is a method for connecting neutral points in a star connection of a three-phase AC motor, wherein a conductive connecting member is fitted to each neutral point end of each phase winding. And a step of caulking the windings of the respective phases fitted with the connection members juxtaposed at predetermined intervals.
【００１０】[0010]
【発明の実施の形態】以下、発明の実施の形態を通じて
本発明を説明する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described through embodiments of the invention.
【００１１】図１は、実施形態に係る３相交流モータの
中性点結合部１０の平面図である。また、図２は、図１
の線Ａ−Ａ’に沿った中性点結合部１０の断面図であ
る。３相交流モータのＵ相コイル２０、Ｖ相コイル２
２、Ｗ相コイル２４は、図示しない電力ケーブル端子に
それぞれ接続されている。Ｕ相コイル２０、Ｖ相コイル
２２、Ｗ相コイル２４の各巻き終わり部分は、それぞ
れ、銅製の丸端子４０，４２，４４によりかしめられて
いる。各相のコイルはエナメル被覆により絶縁されてい
るが、丸端子でかしめられた部分のエナメル被覆は除去
されている。丸端子４０，４２，４４は、支持部材３０
に並置した状態で接合され、Ｕ相コイル２０、Ｖ相コイ
ル２２、Ｗ相コイル２４は互いに導通している。支持部
材３０は、銅などの導電性を有する材料で形成され、平
板状の形状を有する。なお、支持部材３０は、線Ａ−
Ａ’方向の両端部にコイル側に突き出したガード部３
２，３４を有することが好適である。ガード部３２，３
４の効用については後述する。FIG. 1 is a plan view of a neutral point connecting portion 10 of a three-phase AC motor according to the embodiment. In addition, FIG.
It is sectional drawing of the neutral point joint part 10 along the line AA 'of FIG. U-phase coil 20 and V-phase coil 2 of a three-phase AC motor
2. The W-phase coils 24 are connected to power cable terminals (not shown), respectively. The winding end portions of the U-phase coil 20, the V-phase coil 22 and the W-phase coil 24 are crimped by copper round terminals 40, 42 and 44, respectively. The coil of each phase is insulated by the enamel coating, but the enamel coating of the portion crimped with the round terminal is removed. The round terminals 40, 42, 44 are the support members 30.
The U-phase coil 20, the V-phase coil 22, and the W-phase coil 24 are electrically connected to each other. The support member 30 is made of a conductive material such as copper and has a flat plate shape. The support member 30 has a line A-
Guard parts 3 protruding toward the coil at both ends in the A'direction
It is preferred to have 2,34. Guard parts 32, 3
The effect of 4 will be described later.
【００１２】これによれば、中性点の結合部を平らな形
状に形成することができる。また、３相交流モータのコ
イルエンドの高さを、従来のコイルエンドに比べて低く
抑えることができる。さらに、中性点の結合部を平らな
形状にできるので、３相交流モータのコイルエンド部を
プレスして成形する際に、コイルへの加圧時の面圧が低
減される。このため、コイルの損傷が少なくできるの
で、安定した品質で信頼性の高い３相交流モータを低コ
ストで生産できる。According to this, it is possible to form the coupling portion of the neutral point into a flat shape. Further, the height of the coil end of the three-phase AC motor can be suppressed lower than that of the conventional coil end. Further, since the coupling portion of the neutral point can be formed into a flat shape, the surface pressure at the time of pressurizing the coil is reduced when the coil end portion of the three-phase AC motor is pressed and molded. For this reason, the damage to the coil can be reduced, so that a three-phase AC motor having stable quality and high reliability can be produced at low cost.
【００１３】[作製方法]Ｕ相コイル２０、Ｖ相コイル２
２、Ｗ相コイル２４の各巻き終り部に、それぞれ銅製の
丸端子４０，４２，４４を装着する。次に、各コイルの
丸端子装着部分を、支持部材３０上に所定の間隔で設置
する。この間隔は、後述する通電かしめにより、隣合う
コイルの丸端子が接触するように設定することが好適で
ある。これにより、隣合うコイル間の導通をより確実に
することができる。[Manufacturing Method] U-phase coil 20 and V-phase coil 2
2. Copper round terminals 40, 42, and 44 are attached to the winding end portions of the W-phase coil 24, respectively. Next, the round terminal mounting portion of each coil is installed on the support member 30 at a predetermined interval. It is preferable that this interval be set so that the round terminals of the adjacent coils come into contact with each other by the later-described caulking. Thereby, the conduction between the adjacent coils can be made more reliable.
【００１４】次に、対向する２つの電極１００，１０２
間に支持部材３０と各コイルの丸端子装着部分を保持
し、この２つの電極間に電流を流すとともに、加圧する
ことにより、通電かしめが行なわれる（図３参照）。Next, two electrodes 100 and 102 facing each other
The supporting member 30 and the round terminal mounting portion of each coil are held between them, and an electric current is applied between these two electrodes, and pressure is applied to carry out caulking of the current (see FIG. 3).
【００１５】本実施形態においては、上述の様に、各コ
イルの巻き終わり部に丸端子を装着する作業がある。一
方、通常各コイルの巻き始め部は、図４のように、丸形
の圧着端子８０が装着され、かしめられている。このよ
うに、本実施形態の各コイルの巻き終わり部に丸端子を
装着する作業と、各コイルの巻き始め部に丸型端子を装
着する作業は、同様な部材をコイル端部に装着するとい
う点で類似するものとなっている。一般に、類似する作
業を行なう方が、異なる作業を行なうよりも作業効率が
高いので、本実施形態のような中性点結合部の製作は、
作業効率が高くなると推測される。In the present embodiment, as described above, there is an operation of mounting the round terminal at the winding end portion of each coil. On the other hand, usually, at the winding start portion of each coil, as shown in FIG. 4, a round crimp terminal 80 is mounted and crimped. As described above, the work of mounting the round terminal at the winding end of each coil and the work of mounting the round terminal at the winding start of each coil according to the present embodiment are referred to as mounting the same member at the coil end. The points are similar. In general, performing similar work is higher in work efficiency than performing different work. Therefore, the production of the neutral point connecting portion as in the present embodiment is
It is estimated that the work efficiency will increase.
【００１６】図５は、他の実施形態に係る３相交流モー
タの中性点結合部１０の断面図である。本実施形態にお
いては、Ｕ相コイル２０、Ｖ相コイル２２、Ｗ相コイル
２４の各巻き終り部が、それぞれ銅製の丸端子４０，４
２，４４によりかしめられている。丸端子４０と丸端子
４２、及び丸端子４２と丸端子４４とが接合され、Ｕ相
コイル２０、Ｖ相コイル２２、Ｗ相コイル２４は、互い
に導通されている。FIG. 5 is a sectional view of a neutral point coupling portion 10 of a three-phase AC motor according to another embodiment. In the present embodiment, the winding end portions of the U-phase coil 20, the V-phase coil 22 and the W-phase coil 24 are copper round terminals 40 and 4, respectively.
It is crimped by 2,44. The round terminal 40 and the round terminal 42, and the round terminal 42 and the round terminal 44 are joined, and the U-phase coil 20, the V-phase coil 22, and the W-phase coil 24 are electrically connected to each other.
【００１７】これによっても、中性点の結合部を平らな
形状に形成することができる。また、３相交流モータの
コイルエンドの高さを低く抑え、３相交流モータのコイ
ルエンド部をプレスして成形する際のコイルへの加圧時
の面圧を低減することができる。This also makes it possible to form the neutral point connecting portion in a flat shape. Further, it is possible to suppress the height of the coil end of the three-phase AC motor to a low level and reduce the surface pressure when pressing the coil when the coil end portion of the three-phase AC motor is pressed and molded.
【００１８】[作製方法]Ｕ相コイル２０、Ｖ相コイル２
２、Ｗ相コイル２４の各巻き終り部に、それぞれ銅製の
丸端子４０，４２，４４を装着する。[Manufacturing Method] U-phase coil 20 and V-phase coil 2
2. Copper round terminals 40, 42, and 44 are attached to the winding end portions of the W-phase coil 24, respectively.
【００１９】次に、各コイルの丸端子装着部分を、所定
の間隔で対向する２つの電極１０４，１０６間に保持す
る。この２つの電極間に電流を流すとともに、加圧する
ことにより、通電かしめが行なわれる（図６参照）。な
お、電極１０６には、３つのコイルの両側に沿って、土
手状のガード部１０８，１１０が設けてあり、通電かし
め時に必要以上に両側のコイルが外に膨らんでしまうこ
とが防止される。Next, the round terminal mounting portion of each coil is held between the two electrodes 104 and 106 facing each other at a predetermined interval. By applying a current between these two electrodes and applying pressure, the current is caulked (see FIG. 6). In addition, the electrode 106 is provided with bank-shaped guard portions 108 and 110 along both sides of the three coils, and prevents the coils on both sides from bulging out more than necessary during current staking.
【００２０】[0020]
【発明の効果】上記説明から明らかなように、本発明に
よれば、３相交流モータの中性点結合部を平らな形状に
することができる。As is apparent from the above description, according to the present invention, the neutral point connecting portion of the three-phase AC motor can be made flat.
【図１】 実施形態に係る３相交流モータの中性点結合
部１０の平面図である。FIG. 1 is a plan view of a neutral point coupling portion 10 of a three-phase AC motor according to an embodiment.
【図２】 図１の線Ａ−Ａ’に沿った中性点結合部１０
の断面図である。FIG. 2 is a neutral point connecting portion 10 taken along line AA ′ of FIG.
FIG.
【図３】 通電かしめを示す図である。FIG. 3 is a diagram showing energization caulking.
【図４】 コイルの巻き始め部の構成を示す図である。FIG. 4 is a diagram showing a configuration of a winding start portion of a coil.
【図５】 他の実施形態に係る３相交流モータの中性点
結合部１０の断面図である。FIG. 5 is a cross-sectional view of a neutral point coupling portion 10 of a three-phase AC motor according to another embodiment.
【図６】 通電かしめを示す図である。FIG. 6 is a diagram showing energization caulking.
【図７】 ３相交流モータのスター結線を示す回路図で
ある。FIG. 7 is a circuit diagram showing a star connection of a three-phase AC motor.
【図８】 従来のコイルの巻き終わり部の構成を示す図
である。FIG. 8 is a diagram showing a configuration of a winding end portion of a conventional coil.
１０ 中性点結合部、２０ Ｕ相コイル、２２ Ｖ相コ
イル、２４ Ｗ相コイル、３０ 支持部材、３２，３４
ガード部、４０，４２，４４ 丸端子。10 neutral point coupling part, 20 U-phase coil, 22 V-phase coil, 24 W-phase coil, 30 support member, 32, 34
Guard part, 40, 42, 44 Round terminals.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5H603 AA03 AA09 BB01 BB07 BB11 CA01 CA05 CB03 CB05 CB16 CD02 CE01 CE13 EE04 EE08 5H604 AA05 AA08 BB01 BB08 BB12 BB14 BB17 CC01 QA06 QB03 QB14 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 5H603 AA03 AA09 BB01 BB07 BB11 CA01 CA05 CB03 CB05 CB16 CD02 CE01 CE13 EE04 EE08 5H604 AA05 AA08 BB01 BB08 BB12 BB14 BB17 CC01 QA06 QB03 QB14
Claims (4)
の結合構造であって、 導電性の接続部材が嵌められた各相の巻線の中性点端部
と、 導電性の支持板と、 を備え、 前記各相の中性点端部が、所定の間隔で並置された状態
で支持板上に接合され、各相の巻線同士が導通している
ことを特徴とする中性点の結合構造。1. A connection structure of a neutral point in a star connection of a three-phase AC motor, wherein a neutral point end portion of each phase winding in which a conductive connecting member is fitted, and a conductive support are provided. A plate, and the neutral point end portions of the respective phases are joined on a support plate in a state of being juxtaposed at a predetermined interval, and the windings of the respective phases are electrically connected to each other. Bond structure of sex points.
を結合する方法であって、 各相の巻線の中性点端部それぞれに導電性の接続部材を
嵌める工程と、 導電性の支持板上に所定の間隔で並置された前記接続部
材を嵌めた各相の巻線を通電かしめする工程と、 を備えることを特徴とする中性点結合方法。2. A method for connecting a neutral point in a star connection of a three-phase AC motor, the method comprising fitting a conductive connecting member at each neutral point end of each phase winding, and A step of energizing and caulking the windings of each phase in which the connecting members are juxtaposed on the support plate at a predetermined interval, and a neutral point coupling method.
の結合構造であって、 導電性の接続部材が嵌められた各相の巻線の中性点端部
を備え、 隣り合う中性点端部が所定の間隔で並置され、隣り合う
相の巻線同士が導通していることを特徴とする中性点の
結合構造。3. A coupling structure of neutral points in a star connection of a three-phase AC motor, comprising neutral point end portions of windings of respective phases in which conductive connecting members are fitted, A neutral point coupling structure, in which end points of a sex point are juxtaposed at a predetermined interval, and windings of adjacent phases are electrically connected to each other.
を結合する方法であって、 各相の巻線の中性点端部それぞれに導電性の接続部材を
嵌める工程と、 所定の間隔で並置された前記接続部材を嵌めた各相の巻
線を通電かしめする工程と、 を備えることを特徴とする中性点結合方法。4. A method for connecting a neutral point in a star connection of a three-phase AC motor, the method comprising fitting a conductive connecting member at each end of the neutral points of windings of respective phases, And a step of energizing the windings of the respective phases fitted with the connection members juxtaposed at intervals with each other, the neutral point coupling method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002000461A JP2003204646A (en) | 2002-01-07 | 2002-01-07 | Structure and method for neutral point coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002000461A JP2003204646A (en) | 2002-01-07 | 2002-01-07 | Structure and method for neutral point coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003204646A true JP2003204646A (en) | 2003-07-18 |
Family
ID=27640842
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100667201B1 (en) * | 2005-05-16 | 2007-01-12 | 삼성전자주식회사 | Neutral point formation method for three-phase motor |
| JP2015012630A (en) * | 2013-06-26 | 2015-01-19 | 三菱電機株式会社 | Three-phase motor, sealed compressor, and refrigeration cycle device |
-
2002
- 2002-01-07 JP JP2002000461A patent/JP2003204646A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100667201B1 (en) * | 2005-05-16 | 2007-01-12 | 삼성전자주식회사 | Neutral point formation method for three-phase motor |
| JP2015012630A (en) * | 2013-06-26 | 2015-01-19 | 三菱電機株式会社 | Three-phase motor, sealed compressor, and refrigeration cycle device |
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