JPH1132456A - Stator coil for rotary electric machine - Google Patents
Stator coil for rotary electric machineInfo
- Publication number
- JPH1132456A JPH1132456A JP18268197A JP18268197A JPH1132456A JP H1132456 A JPH1132456 A JP H1132456A JP 18268197 A JP18268197 A JP 18268197A JP 18268197 A JP18268197 A JP 18268197A JP H1132456 A JPH1132456 A JP H1132456A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- home
- stator
- slot
- electric machine
- 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.)
- Pending
Links
Landscapes
- Windings For Motors And Generators (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、回転電機の固定子
コイルに関する。The present invention relates to a stator coil for a rotating electric machine.
【０００２】[0002]
【従来の技術】ラジアルエアギャップを有する円筒状の
固定子コアの一対のスロット２１、２２に固定子コイル
を集中巻きする場合、この固定子コイルを複数のホ−ム
コイル３００の並列接続ないし直列接続により構成する
ことにより、コイルのスロット挿入作業や挿入後のコイ
ルエンド整形作業を容易化することが行われている（図
３参照）。2. Description of the Related Art When a stator coil is concentratedly wound around a pair of slots 21 and 22 of a cylindrical stator core having a radial air gap, the stator coil is connected in parallel or in series with a plurality of home coils 300. (See FIG. 3), the slot insertion operation of the coil and the coil end shaping operation after the insertion are facilitated.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記した
従来の分割式固定子コイルにおいても、コイル断面積が
増大する場合などでは、ホ−ムコイル３００の各タ−ン
が図３に示すようにコイルエンド３０１の部分において
交差して重なることになり、コイルエンド整形加工が容
易でないという問題や、コイルエンド部分の曲げ整形に
より重なり部分にてレアア−スが生じやすくなるという
問題があった。However, even in the above-mentioned conventional split type stator coil, when the coil cross-sectional area increases, each turn of the home coil 300 becomes the coil end as shown in FIG. There is a problem that coil end shaping processing is not easy, and that a rare earth is easily generated in the overlapping portion due to bending and shaping of the coil end portion.
【０００４】本発明は上記問題点に鑑みなされたもので
あり、作業性に優れ、絶縁不良が生じにくい回転電機の
固定子コイルを提供することをその目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a stator coil of a rotating electric machine which is excellent in workability and hardly causes insulation failure.
【０００５】[0005]
【課題を解決するための手段】請求項１記載の構成によ
れば、回転電機の固定子コイルは固定子コアの一対のス
ロットに巻装される複数のホ−ムコイルにより構成さ
れ、特に、これらホ−ムコイルは渦巻コイルにより構成
される。 このようにすれば、コイルエンド整形加工が
容易となり、コイルエンド部分のレアア−スも生じにく
い固定子コイルを得ることができる。According to a first aspect of the present invention, a stator coil of a rotary electric machine is constituted by a plurality of home coils wound around a pair of slots of a stator core. The home coil is constituted by a spiral coil. This makes it possible to easily form the coil end and to obtain a stator coil in which rare earth at the coil end is less likely to occur.
【０００６】以下、この発明の作用効果を上記従来の固
定子コイルとの比較により更に具体的に説明する。従来
では、ホ−ムコイルの各タ−ンの幅（周方向延設部分の
長さを幅という）は等しいので、ホ−ムコイルの各タ−
ンは、スロットに挿入した状態では図３に示すように、
各タ−ンを軸方向および周方向へ順次ずらせた配置とな
る。Hereinafter, the function and effect of the present invention will be described more specifically by comparison with the above-mentioned conventional stator coil. Conventionally, the width of each turn of the home coil (the length of the circumferentially extending portion is referred to as the width) is equal, so that each turn of the home coil is
When inserted into the slot, as shown in FIG.
Each of the turns is sequentially shifted in the axial direction and the circumferential direction.
【０００７】これは、１スロットに複数のホ−ムコイル
を挿入するために、初期に挿入されるホ−ムコイルの各
タ−ンをスロットの底部側に配列、これにより空いたス
ロットの開口側空間にその後に挿入されるホ−ムコイル
の各タ−ンを配列するためである。けれども、この配列
では、ホ−ムコイルの各タ−ンはスロット内で周方向へ
順次ずれるため、各タ−ンのコイルエンドは周方向、軸
方向へずれる必要ができ、結局、図３に示す交差、重複
部分ｍが形成され、コイルエンドが径方向に分厚くな
り、コイルエンドの曲げ加工が困難化し、絶縁被覆に傷
が付きやすくなる。In order to insert a plurality of home coils into one slot, the turns of the home coil to be initially inserted are arranged at the bottom side of the slot, thereby opening the open side space of the slot. This is for arranging the turns of the home coil inserted thereafter. However, in this arrangement, since each turn of the home coil is sequentially shifted in the circumferential direction in the slot, the coil end of each turn needs to be shifted in the circumferential direction and the axial direction. Intersecting and overlapping portions m are formed, the coil ends become thicker in the radial direction, bending of the coil ends becomes difficult, and the insulating coating is easily damaged.
【０００８】これに対し、この発明では、ホ−ムコイル
が螺旋巻き（渦巻状）となっているので、各タ−ン間の
交差、重なりを除去することができ、その結果、コイル
エンドの曲げ整形が容易となり、かつ、曲げ時に隣接す
るタ−ン同士の交差部分に応力が集中してその部分の絶
縁が低下することがない。請求項２記載の構成によれば
請求項１記載の回転電機の固定子コイルにおいて更に、
ホ−ムコイルはスロットの一層分のコイルスペ−スを全
て占有する。なお、ここでいうスロットの一層分のコイ
ルスペ−スとは、スロットの幅方向（固定子コアの周方
向）の全てを閉め、スロットの深さ方向の１層分を占め
るスペ−スをいう。On the other hand, in the present invention, since the home coil is spirally wound (spiral-shaped), it is possible to eliminate the intersection and overlap between the turns, and as a result, the bending of the coil end Shaping becomes easy, and stress is not concentrated on the intersection of adjacent turns during bending, and insulation at that portion does not deteriorate. According to the configuration of the second aspect, in the stator coil of the rotating electric machine of the first aspect, further,
The home coil occupies all the coil space for one layer of the slot. Here, the coil space for one layer of the slot means a space occupying one layer in the depth direction of the slot by closing the entire width of the slot (the circumferential direction of the stator core).
【０００９】このようにすれば、各ホ−ムコイルがスロ
ット内にその深さ方向に層状に積み重ねられる状態とな
るので、固定子巻装作業が容易となる。[0009] In this case, since each of the home coils is stacked in the slot in the depth direction in a layered manner, the stator winding operation becomes easy.
【００１０】[0010]
【発明の実施の形態】本発明の好適な態様が以下の実施
例により説明される。なお、ホ−ムコイルの各タ−ンの
往導体部は所定のスロットに挿入され、その復導体部が
異なる所定スロットに挿入される。同じ一対のスロット
に複数のホ−ムコイルを挿入する場合には、それらの往
導体部同士が同一スロットに挿入され、復導体部同士が
同一スロットに挿入され、各ホ−ムコイルは並列接続ま
たは直列接続される。The preferred embodiments of the present invention are illustrated by the following examples. The forward conductor of each turn of the home coil is inserted into a predetermined slot, and its return conductor is inserted into a different predetermined slot. When a plurality of home coils are inserted into the same pair of slots, their forward conductors are inserted into the same slot, the return conductors are inserted into the same slot, and each home coil is connected in parallel or in series. Connected.
【００１１】また、ホ−ムコイルの一半を第一のスロッ
トと第二のスロットに挿入し、上記複数のホ−ムコイル
の残りの一半を上記第二のスロットと第三のスロットに
挿入することもできる。この場合、ホ−ムコイルの一半
の各タ−ンの往導体部を第一のスロットに挿入し、その
復導体部を第二のスロットに挿入する場合、上記複数の
ホ−ムコイルの残りの一半の各タ−ンの復導体部が上記
第二のスロットに挿入され、その往導体部が第三のスロ
ットに挿入される。Further, one half of the home coil may be inserted into the first slot and the second slot, and the other half of the plurality of home coils may be inserted into the second slot and the third slot. it can. In this case, when the forward conductor portion of each half turn of the home coil is inserted into the first slot and its return conductor portion is inserted into the second slot, the remaining half of the plurality of home coils is inserted. The return conductor of each turn is inserted into the second slot, and the forward conductor is inserted into the third slot.
【００１２】[0012]
（実施例１）本発明の回転電機の固定子コイルの一実施
例について図１を参照して説明する。図１はこの回転電
機の固定子の模式部分平面図である。固定子１は、円筒
状の固定子コア２と、固定子コイル３とからなり、固定
子コア２の内周面には所定数のスロット（図１では一対
のスロット２１、２２のみが示されている）がステータ
周方向へ一定ピッチで形成されている。(Embodiment 1) An embodiment of a stator coil of a rotating electric machine according to the present invention will be described with reference to FIG. FIG. 1 is a schematic partial plan view of a stator of the rotating electric machine. The stator 1 includes a cylindrical stator core 2 and a stator coil 3. A predetermined number of slots (only a pair of slots 21 and 22 are shown in FIG. 1) on the inner peripheral surface of the stator core 2. Are formed at a constant pitch in the circumferential direction of the stator.
【００１３】固定子コイル３は、複数のホ−ムコイル
（図１では一個のホ−ムコイル３１のみが図示されてい
る）を直並列接続してなり、ホ−ムコイル３１の往導体
部３１１〜３１５はスロット２１に挿入され、ホ−ムコ
イル３１の復導体部３１６〜３２０はスロット２２に挿
入されている。ホ−ムコイル３１は、この実施例では、
５重の渦巻コイルからなり、ホ−ムコイル３１の各タ−
ンを構成する５本の往導体部３１１はスロット２１に幅
方向（固定子コア２の周方向）に並べられ、ホ−ムコイ
ル３１の各タ−ンを構成する５本の復導体部３１２もス
ロット２２に幅方向（固定子コア２の周方向）に並べら
れている。The stator coil 3 is formed by connecting a plurality of home coils (only one home coil 31 is shown in FIG. 1) in series / parallel, and the forward conductor portions 311 to 315 of the home coil 31. Are inserted into the slots 21, and the return conductor portions 316 to 320 of the home coil 31 are inserted into the slots 22. The home coil 31 is, in this embodiment,
Each coil of the home coil 31 is composed of five spiral coils.
The five outgoing conductors 311 constituting the coil are arranged in the slot 21 in the width direction (the circumferential direction of the stator core 2), and the five return conductors 312 constituting each turn of the home coil 31 are also provided. The slots 22 are arranged in the width direction (the circumferential direction of the stator core 2).
【００１４】スロット２１の模式拡大正面図を図２に示
す。スロット２１内には、４個のホ−ムコイル３１〜３
４の各往導体部３１１〜３１５、３２１〜３２５、３３
１〜３３５、３４１〜３４５が略行列配置されている。
更に詳しく説明すると、スロット２１の底部にはホ−ム
コイル３１の往導体部３１１〜３１５が並べられてお
り、順次、各ホ−ムコイル３２〜３４の各往導体部３２
１〜３２５、３３１〜３３５、３４１〜３４５が並べら
れている。なお、図２は往導体部配置を略示するための
模式図であって、絶縁材、絶縁皮膜などの図示は省略し
ている。A schematic enlarged front view of the slot 21 is shown in FIG. In the slot 21, four home coils 31 to 3 are provided.
4 each forward conductor part 311-315, 321-325, 33
1 to 335 and 341 to 345 are arranged substantially in a matrix.
More specifically, the forward conductors 311 to 315 of the home coil 31 are arranged at the bottom of the slot 21, and the forward conductors 32 of each of the home coils 32 to 34 are sequentially arranged.
1 to 325, 331 to 335, and 341 to 345 are arranged. FIG. 2 is a schematic diagram for schematically showing the arrangement of the outward conductor, and illustration of an insulating material, an insulating film, and the like is omitted.
【００１５】この実施例によれば、図１からわかるよう
に、ホ−ムコイル３１の各タ−ンの両端部からなるコイ
ルエンド３５、３６は互いに交差、重なることがなく、
同様に他のホ−ムコイル３２〜３４のコイルエンドも交
差、重なることがなく、その結果、各ホ−ムコイル３１
〜３４をスロット挿入後、それらのコイルエンドを所定
形状に曲げ整形する際に、隣接する各タ−ンのコイルエ
ンドの交差部分に応力が集中したり、曲げ加工しにくく
なったりすることがない。According to this embodiment, as can be seen from FIG. 1, the coil ends 35 and 36 formed at both ends of each turn of the home coil 31 do not intersect or overlap with each other.
Similarly, the coil ends of the other home coils 32 to 34 do not cross or overlap with each other. As a result, each home coil 31
When the coil ends are bent into a predetermined shape after the slots 34 are inserted, stress is not concentrated on the intersections of the coil ends of the adjacent turns, and bending is not difficult. .
【００１６】なお、図２では固定子コイル３をスロット
の深さ方向に縦長である角型コイルとしたが、このよう
にすると、１スロット内のホ−ムコイル数を低減でき、
接続箇所を減らせるという効果が生じる。なお、従来で
は、このようにスロットの深さ方向に縦長の角型コイル
はコイルエンドの径方向への曲げ加工が難しかったが、
この実施例では、上述したようにコイルエンドにおける
交差を防止できるので、その径方向への曲げ加工を容易
化できるため、上述したスロットの深さ方向に縦長の角
型コイルの使用が可能となる。In FIG. 2, the stator coil 3 is a rectangular coil which is vertically elongated in the depth direction of the slot. However, in this case, the number of home coils in one slot can be reduced.
There is an effect that the number of connection points can be reduced. Conventionally, it was difficult to bend the coil end in the radial direction of the coil end in the rectangular coil vertically elongated in the depth direction of the slot as described above.
In this embodiment, since the intersection at the coil end can be prevented as described above, the bending in the radial direction can be facilitated, so that the above-described rectangular coil that is vertically long in the depth direction of the slot can be used. .
【００１７】もちろん、その他の断面形状をもつ固定子
コイルを採用できることは当然である。Of course, it is natural that stator coils having other cross-sectional shapes can be adopted.
【図１】 この発明の固定子コイル構造を説明するため
の固定子の模式部分平面図である。FIG. 1 is a schematic partial plan view of a stator for explaining a stator coil structure of the present invention.
【図２】 図１のスロットの模式拡大正面図である。FIG. 2 is a schematic enlarged front view of the slot of FIG.
【図３】 従来の固定子コイル構造を説明するための固
定子の模式部分平面図である。FIG. 3 is a schematic partial plan view of a stator for describing a conventional stator coil structure.
２は固定子コア、３は固定子コイル、２１、２２はスロ
ット、３１〜３４はホ−ムコイル。2 is a stator core, 3 is a stator coil, 21 and 22 are slots, and 31 to 34 are home coils.
Claims (2)
る複数のホ−ムコイルからなる回転電機の固定子コイル
において、 各前記ホ−ムコイルは、渦巻コイルからなることを特徴
とする回転電機の固定子コイル。1. A stator coil of a rotating electrical machine comprising a plurality of home coils wound around a pair of slots of a stator core, wherein each of said home coils comprises a spiral coil. Stator coil.
において、 前記ホ−ムコイルは、前記スロットの一層分のコイルス
ペ−スを全て占有することを特徴とする回転電機の固定
子コイル。2. The stator coil of a rotating electric machine according to claim 1, wherein said home coil occupies the entire coil space for one layer of said slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18268197A JPH1132456A (en) | 1997-07-08 | 1997-07-08 | Stator coil for rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18268197A JPH1132456A (en) | 1997-07-08 | 1997-07-08 | Stator coil for rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1132456A true JPH1132456A (en) | 1999-02-02 |
Family
ID=16122582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18268197A Pending JPH1132456A (en) | 1997-07-08 | 1997-07-08 | Stator coil for rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1132456A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002026617A (en) * | 2000-07-11 | 2002-01-25 | Murata Mfg Co Ltd | Transmission line |
| US6565032B1 (en) | 1999-03-09 | 2003-05-20 | Mitsuba Corporation | Winding method and apparatus of armature |
-
1997
- 1997-07-08 JP JP18268197A patent/JPH1132456A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6565032B1 (en) | 1999-03-09 | 2003-05-20 | Mitsuba Corporation | Winding method and apparatus of armature |
| JP2002026617A (en) * | 2000-07-11 | 2002-01-25 | Murata Mfg Co Ltd | Transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040302 |