JPH0744797B2 - Armature coil - Google Patents
Armature coilInfo
- Publication number
- JPH0744797B2 JPH0744797B2 JP61117037A JP11703786A JPH0744797B2 JP H0744797 B2 JPH0744797 B2 JP H0744797B2 JP 61117037 A JP61117037 A JP 61117037A JP 11703786 A JP11703786 A JP 11703786A JP H0744797 B2 JPH0744797 B2 JP H0744797B2
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- wire
- coil
- armature coil
- resin
- 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.)
- Expired - Lifetime
Links
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- Windings For Motors And Generators (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、例えば交流発電機のステータに用いられる電
機子コイルに関する。TECHNICAL FIELD The present invention relates to an armature coil used for a stator of an AC generator, for example.
従来、車両用交流発電機のステータコイルはステータコ
アに３相交流巻線となるように、電気角度120°ピッチ
で、複数本を束にして、巻装している。Conventionally, a stator coil of an automotive alternator is wound around a stator core in a bundle of a plurality of coils at an electrical angle of 120 ° so as to form a three-phase AC winding.
ところが、上述した従来のものでは、ロータコイルによ
り発生する回転磁界が、ステータコイルに作用する時
に、ポールコアの爪間で、磁束が漏れ、回転磁界を有効
に、ステータコイルに作用させることができないという
問題点がある。However, in the above-mentioned conventional one, when the rotating magnetic field generated by the rotor coil acts on the stator coil, the magnetic flux leaks between the claws of the pole core, and the rotating magnetic field cannot be effectively acted on the stator coil. There is a problem.
そこで、本発明は、 偏平状の導体（１）と、これら導体の界磁部において、
前記導体の面積の大きい面に電気的に導通されるように
設けられる軟磁性体（５、６）とを備え、前記導体及び
前記軟磁性体を径方向に対して面積の大きい面が並行に
配置されるように筒状に形成したことを特徴とする電機
子コイルとすることである。Therefore, in the present invention, in the flat conductor (1) and the field portion of these conductors,
A soft magnetic material (5, 6) provided so as to be electrically connected to a surface of the conductor having a large area, and the surface of the conductor and the soft magnetic material having a large area in a radial direction are parallel to each other. The armature coil is formed in a tubular shape so as to be arranged.
導体間の隙間に軟磁性体を配置することで、導体は径方
向に磁束を流れやすくする。By arranging the soft magnetic material in the gap between the conductors, the conductors facilitate the magnetic flux to flow in the radial direction.
上述したように、電機子コイルは導体の界磁部において
導体の面積の大きい面に電気的に導通された軟磁性体を
設けることにより径方向に磁束を通りやすくし、磁束を
有効に利用できるとともに、導体内を流れる電流は、軟
磁性体の部分において、その抵抗値が小さくなることか
ら効率的に電流を流すことができ、また発熱量が減少す
るため、冷却効率を高めることができる。また導体及び
軟磁性体を径方向に対して、面積の大きい面が並行に配
置されるようにして、導体にうず電流が発生するのを防
止することができるという優れた効果がある。As described above, in the armature coil, by providing the electrically conductive soft magnetic material on the surface of the conductor having a large area in the field part of the conductor, the magnetic flux can be easily passed in the radial direction and the magnetic flux can be effectively used. At the same time, the resistance of the electric current flowing through the conductor is reduced in the soft magnetic body, so that the electric current can be passed efficiently, and the amount of heat generated is reduced, so that the cooling efficiency can be increased. Further, the conductor and the soft magnetic material are arranged such that the surfaces having a large area are arranged in parallel to each other in the radial direction, so that an eddy current can be prevented from being generated in the conductor.
以下本発明を図に示す実施例について説明する。第１図
（ａ），（ｂ），（ｃ）は本発明による電機子コイルの
素線１のそれぞれ正面図、平面図、側面図である。The present invention will be described below with reference to embodiments shown in the drawings. 1 (a), (b), and (c) are a front view, a plan view, and a side view, respectively, of a wire 1 of an armature coil according to the present invention.
素線１は、第２図に示す如く、銅板30の中心部に、鉄板
31の両端部31aを溶接して、所定の形状（点線で示して
ある）32に打ち抜く。As shown in FIG. 2, the wire 1 has an iron plate at the center of the copper plate 30.
Both ends 31a of 31 are welded and punched into a predetermined shape (shown by the dotted line) 32.
そして、素線１は、第１図に示される様に、折り曲げ
る。つまり、一端のコイルエンド部２よりふた又に分け
て、上線３と下線４とをそれぞれ形成する。また上線３
の鉄板部５と下線４の鉄板部６とが、互いに並行になる
ように、鉄板部5,6の両端での素線１を折り曲げてい
る。さらに、素線１は鉄板部5,6の端面側から、互いに
離れて拡がり、上線３のコイルエンド部3aと下線４のコ
イルエンド部4aとは、素線１の端部を折り曲げて、並行
に形成されている。Then, the wire 1 is bent as shown in FIG. That is, the upper wire 3 and the lower wire 4 are formed separately from the coil end portion 2 at one end into the lid. Overline 3
The wire 1 is bent at both ends of the iron plate parts 5 and 6 so that the iron plate part 5 and the iron plate part 6 of the underwire 4 are parallel to each other. Furthermore, the wire 1 spreads away from each other from the end surface side of the iron plate portions 5 and 6, and the coil end portion 3a of the upper wire 3 and the coil end portion 4a of the lower wire 4 are bent in parallel with each other. Is formed in.
そして、上線３と下線４との間に、筒状の絶縁板７を挿
入すると共に、素線１の上線３と下線４との間に、３相
交流の場合、３の倍数である複数個の他の上線３もしく
は下線４が配置される。また、それぞれ異なった上線３
のコイルエンド3aと下線４のコイルエンド4aとを、絶縁
板７の端面より外側で溶接し、波巻きとして、３相交流
巻きのステータコイル８を、周方向に多数本の素線１を
配置するように、第３図ないし第５図に示す如く、筒状
に形成してある。A cylindrical insulating plate 7 is inserted between the upper wire 3 and the lower wire 4, and a plurality of multiples of 3 are used between the upper wire 3 and the lower wire 4 of the wire 1 in the case of three-phase alternating current. Another upper line 3 or lower line 4 is arranged. Also, different overlines 3
Of the coil end 3a and the coil end 4a of the underwire 4 are welded to the outside of the end surface of the insulating plate 7 to form a three-phase AC winding stator coil 8 as a wave winding, and a large number of strands 1 are arranged in the circumferential direction. Therefore, as shown in FIGS. 3 to 5, it is formed in a tubular shape.
また、ステータコイル８は、素線１が径方向外周側に、
素線１の厚みがあるように設けてある。Further, in the stator coil 8, the wire 1 is located on the outer peripheral side in the radial direction
It is provided so that the strand 1 has a thickness.
そして、ステータコイル８は、素線１を円筒状に結線
後、ステータコア10内に、絶縁シート11を介して、挿入
される。また、鉄板部５、６はステータコア10の軸方向
長と同じであり、ステータコア10は素線１が互いに接触
しないように、第６図に示す先端テーパ状のピン９をコ
イルエンド部3a,4a間に挿入して、上線３の外周側（ス
テータコア10を除く）に、筒状に絶縁用の第１の樹脂12
aと、素線１の両端（コイルエンド部2,3a,4a）に、第２
の樹脂12bとを用いて、固定している。そして、第1,第
２の樹脂12a,12bにより、ピン９をはずした後も、素線
１間に隙間を設けている。Then, the stator coil 8 is inserted into the stator core 10 via the insulating sheet 11 after connecting the wires 1 into a cylindrical shape. Further, the iron plate portions 5 and 6 are the same as the axial length of the stator core 10, and the stator core 10 has the tapered tip pin 9 shown in FIG. 6 for preventing the strands 1 from contacting each other. The first resin 12 for insulation is inserted cylindrically on the outer peripheral side of the upper wire 3 (excluding the stator core 10).
a and a second wire on both ends of the wire 1 (coil end portions 2, 3a, 4a)
It is fixed by using the resin 12b. A gap is provided between the wires 1 even after the pin 9 is removed by the first and second resins 12a and 12b.
次に、第７図に示す車両用交流発電機について説明する
と、シャフト20の一端には、図示しないベルトを介し
て、内燃機関により駆動されるプーリ21が固定され、外
周には、ロータコイル22が巻装された１対のランデル型
ポールコア23が設けられている。また、シャフト20の他
端には、スリップリング24が設けられている。さらに、
１対のポールコア23の端面には、冷却ファン25,26がそ
れぞれ取付けられている。Explaining the vehicle alternator shown in FIG. 7, a pulley 21 driven by an internal combustion engine is fixed to one end of a shaft 20 via a belt (not shown), and a rotor coil 22 is provided on the outer circumference. There is provided a pair of Landel type pole cores 23 wound with. A slip ring 24 is provided at the other end of the shaft 20. further,
Cooling fans 25 and 26 are attached to the end faces of the pair of pole cores 23, respectively.
そして、シャフト20は、フロントハウジング27、リアハ
ウジング28に組み込まれたボールベアリング29により回
転自在に保持されている。The shaft 20 is rotatably held by ball bearings 29 incorporated in the front housing 27 and the rear housing 28.
また、上述したステータコイル８を巻装したステータコ
ア10は、フロントハウジング27とリアハウジング28との
間に挟まれ、スルーボルト30を通すことで、ハウジング
27,28内に固定されることとなる。Further, the stator core 10 wound with the above-mentioned stator coil 8 is sandwiched between the front housing 27 and the rear housing 28, and the through bolt 30 is passed therethrough, so that the housing
It will be fixed in 27, 28.
この時、フロントハウジング27、リアハウジング28に
は、それぞれ周方向にリング状のフロントリム27aとリ
アリム28aが一体に形成されており、これらリム27a,28a
により、ステータコイル８の両端のコイルエンド部2,3
a,4aの内側が支持されることとなる。また、第１の樹脂
12a、第２の樹脂12bは、フロントハウジング27、リアハ
ウジング28の内周面に当接することになる。At this time, a ring-shaped front rim 27a and a rear rim 28a are integrally formed in the front housing 27 and the rear housing 28, respectively, in the circumferential direction.
Allows the coil end portions 2 and 3 at both ends of the stator coil 8 to be
The inside of a, 4a will be supported. Also, the first resin
12a and the second resin 12b come into contact with the inner peripheral surfaces of the front housing 27 and the rear housing 28.
また、31はスリップリング24上を摺接するブラシ、32は
出力端子である。Further, 31 is a brush that slides on the slip ring 24, and 32 is an output terminal.
作動は、従来の交流発電機と同様であり、図示せぬベル
トからプーリ21に回転力が与えられると、シャフト20が
回転し、該シャフト20に固定されたポールコア23内のロ
ータコイル22が回転して、ブラシ31より与えられた界磁
電流によって回転磁界を発生する。The operation is similar to that of a conventional AC generator. When a rotational force is applied to the pulley 21 from a belt (not shown), the shaft 20 rotates and the rotor coil 22 in the pole core 23 fixed to the shaft 20 rotates. Then, a rotating magnetic field is generated by the field current given from the brush 31.
この回転磁界は、一方のポールコア23の爪からステータ
コイル８に流れ、他方のポールコア23の爪を通って、磁
束が流れる。This rotating magnetic field flows from the claw of one pole core 23 to the stator coil 8, and the magnetic flux flows through the claw of the other pole core 23.
この時、ステータコイル８には、上述した如く、上線３
間、下線４間に、それぞれ鉄板部5,6が配置されてお
り、回転磁界の磁束は、銅板の上線３、下線４のみに対
して、上線３、下線４にそれぞれ鉄板部5,6を取付けた
ものの方が、鉄板部5,6を磁束が通りやすくなり、つま
り漏れ磁束が少なくなり、上線３、下線４に作用する磁
束量を多くすることができる。At this time, the stator coil 8 has the upper wire 3 as described above.
The iron plate parts 5 and 6 are arranged between the underwires 4 and 4, respectively, and the magnetic flux of the rotating magnetic field applies the iron plate parts 5 and 6 to the upper wire 3 and the lower wire 4, respectively, only for the upper wire 3 and the lower wire 4 of the copper plate. The attached one allows the magnetic flux to more easily pass through the iron plate portions 5, 6, that is, the leakage magnetic flux decreases, and the amount of magnetic flux acting on the upper wire 3 and the lower wire 4 can be increased.
従って、ステータコイル８には、ロータコイル22により
発生する磁束を、有効にステータコイル８に流すことが
でき、ステータコイル８に発生する交流起電力を多く出
力することができる。Therefore, in the stator coil 8, the magnetic flux generated by the rotor coil 22 can be effectively flown to the stator coil 8, and a large amount of AC electromotive force generated in the stator coil 8 can be output.
また、上線３、下線４を、ポールコア23に対向する面の
厚みが薄く、径方向（磁束の流れる方向）の厚みを厚く
しているため、上線３、下線４にうず電流が、生じにく
いという利点もある。In addition, since the upper wire 3 and the lower wire 4 are thin on the surface facing the pole core 23 and are thick in the radial direction (the direction in which the magnetic flux flows), eddy currents are unlikely to occur in the upper wire 3 and the lower wire 4. There are also advantages.
そして、ステータコイル８に誘導された交流起電力は、
図示せぬ全波整流器によって整流され、出力端子32より
出力され、この出力は、界磁電流を制御する周知の電圧
制御装置によって、一定電圧に保たれる。Then, the AC electromotive force induced in the stator coil 8 is
It is rectified by a full-wave rectifier (not shown) and output from the output terminal 32, and this output is kept at a constant voltage by a well-known voltage control device that controls the field current.
また、第３図および第４図に示す如く、第１の樹脂12a
と第２の樹脂12bとの間には、周方向全周に、上線３お
よび下線４が露出しており、これら１対の露出部13a,13
bは、ポールコア23の端面に固定された冷却ファン25,26
に対向する位置に設けられている。そして、シャフト20
の回転により、冷却ファン25,26が発生する風を露出部1
3a,13bに当てて、冷却し、ステータコイル８の全体を確
実に冷却することができる。Also, as shown in FIGS. 3 and 4, the first resin 12a
And the second resin 12b, the upper line 3 and the lower line 4 are exposed over the entire circumference in the circumferential direction. The pair of exposed portions 13a, 13
b is a cooling fan 25, 26 fixed to the end surface of the pole core 23.
Is provided at a position opposite to. And shaft 20
The wind generated by the cooling fans 25, 26 due to the rotation of the
It is possible to reliably cool the entire stator coil 8 by applying the cooling to the 3a and 13b.
また、第１図において、素線１における鉄板部５、６が
配置された界磁部（ａ）は、鉄板部と同板とを導体とす
るため、例えば鉄板と銅板の断面積が同じであれば、抵
抗値が約4/5に減少し、電流がステータコイル８に多く
流れると共に、素線１に電流が流れた時に発生する熱
は、抵抗値が大きくなる非界磁部（b,c）のほうに集中
し、特に前述の冷却効果によって、この非界磁部付近、
つまり、露出部13a,13b近辺を、効率よく冷却できる。
加えて、第７図において、第１の樹脂12aがハウジング2
7内面に挿入されて、フロントハウジング27と、リヤハ
ウジング28に設けられたフロントリム27aとリヤリム28a
によって、コイルエンド部2,3a,4aが支持される構造を
持つため、従来のスロットのない円筒型回転電機の如く
樹脂のみでコイルを固定する支持力に加えて、フロント
リム27aとリヤリム28aによって、さらに堅固に支持でき
る。Further, in FIG. 1, the field portion (a) in which the iron plate portions 5 and 6 of the wire 1 are arranged uses the iron plate portion and the same plate as conductors, and therefore, for example, the iron plate and the copper plate have the same cross-sectional area. If so, the resistance value is reduced to about 4/5, a large amount of current flows through the stator coil 8, and the heat generated when the current flows through the wire 1 causes the resistance value to increase. c), especially due to the aforementioned cooling effect, near this non-field part,
That is, the vicinity of the exposed portions 13a and 13b can be efficiently cooled.
In addition, in FIG. 7, the first resin 12a is
7 Front housing 27, which is inserted into the inner surface, and front rim 27a and rear rim 28a provided on rear housing 28
Has a structure in which the coil end portions 2, 3a, and 4a are supported by the front rim 27a and the rear rim 28a, in addition to the supporting force for fixing the coil only with resin like a conventional cylindrical rotating electric machine without a slot. , Can be more firmly supported.
本発明の電機子コイルを、車両用交流発電機に適用した
が、円筒型回転電機（特にスロットレスタイプ）の電機
子、ティースレスモータの電機子の電機子コイルとして
も利用できる。Although the armature coil of the present invention is applied to a vehicle AC generator, it can also be used as an armature coil of a cylindrical rotary electric machine (particularly a slotless type) and a toothless motor.
なお、鉄板部5,6をすべての上線３間、下線４間に設け
たが、すべてに設ける必要なく、ところどころに設ける
ようにしてもよい。Although the iron plate portions 5 and 6 are provided between all the upper lines 3 and the underlines 4, they need not be provided at all, and may be provided at some places.
第１図（ａ），（ｂ），（ｃ）は本発明電機子コイルの
素線をそれぞれ示す正面図、平面図、側面図、第２図は
素線を作る前の銅板と鉄板を示す正面図、第３図は第５
図におけるＡ−Ａ線に沿う電機子（ステータ）の横断面
図、第４図は第３図における電機子の正面図、第５図は
第４図におけるＡ矢視の平面図、第６図は電機子を形成
する際に使用するピンの斜視図、第７図は本発明電機子
を車両用交流発電機に適用した部分断面正面図である。 １…巻線,2…コイルエンド部,3…上線,4…下線,5,6…鉄
板部,10…ステータコア。1 (a), (b), and (c) are front views, plan views, and side views, respectively, showing the wires of the armature coil of the present invention, and FIG. 2 shows a copper plate and an iron plate before making the wires. Front view, Fig. 3 is No. 5
Fig. 4 is a cross-sectional view of the armature (stator) taken along the line AA in Fig. 4, Fig. 4 is a front view of the armature in Fig. 3, and Fig. 5 is a plan view taken along arrow A in Fig. 4. FIG. 7 is a perspective view of a pin used when forming an armature, and FIG. 7 is a partial cross-sectional front view in which the armature of the present invention is applied to a vehicle AC generator. 1 ... Winding, 2 ... Coil end part, 3 ... Upper wire, 4 ... Under wire, 5,6 ... Iron plate part, 10 ... Stator core.
Claims (2)
部において、前記導体の面積の大きい面に電気的に導通
されるように設けられる軟磁性体（５、６）とを備え、
前記導体及び前記軟磁性体を径方向に対して面積の大き
い面が並行に配置されるように筒状に形成したことを特
徴とする電機子コイル。1. A flat conductor (1) and a soft magnetic body (5, 6) provided in a field portion of these conductors so as to be electrically connected to a surface of the conductor having a large area. Prepare,
An armature coil, characterized in that the conductor and the soft magnetic body are formed in a tubular shape such that surfaces having a large area in a radial direction are arranged in parallel.
により固定されると共に、導体の両端部は、前記第１の
樹脂との間に、所定の隙間（13a、13b）を設けた第２の
樹脂（12b）により固定され、前記隙間間の導体を冷却
用フィンとしたことを特徴とする特許請求の範囲第１項
記載の電機子コイル。2. A first resin (12a) is provided on the outer peripheral side of the conductor.
And both ends of the conductor are fixed by a second resin (12b) provided with a predetermined gap (13a, 13b) between the conductor and the first resin, and the conductor between the gap is fixed. The armature coil according to claim 1, wherein the armature coil is a cooling fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61117037A JPH0744797B2 (en) | 1986-05-20 | 1986-05-20 | Armature coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61117037A JPH0744797B2 (en) | 1986-05-20 | 1986-05-20 | Armature coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62272836A JPS62272836A (en) | 1987-11-27 |
| JPH0744797B2 true JPH0744797B2 (en) | 1995-05-15 |
Family
ID=14701872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61117037A Expired - Lifetime JPH0744797B2 (en) | 1986-05-20 | 1986-05-20 | Armature coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0744797B2 (en) |
Families Citing this family (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6124660A (en) * | 1997-05-26 | 2000-09-26 | Denso Corporation | AC generator for vehicles |
| JP3407643B2 (en) * | 1997-05-26 | 2003-05-19 | 株式会社デンソー | AC generator for vehicles |
| DE69826534T2 (en) * | 1997-05-26 | 2005-09-29 | Denso Corp., Kariya | Alternator for vehicles |
| EP1227567B1 (en) * | 1997-05-26 | 2007-01-17 | Denso Corporation | Alternator for vehicles |
| DE69830869T2 (en) | 1997-05-26 | 2006-05-24 | Denso Corp., Kariya | Alternator for motor vehicles |
| US5952749A (en) * | 1997-05-26 | 1999-09-14 | Denso Corporation | Cooling arrangement of alternator |
| US5955810A (en) * | 1997-05-26 | 1999-09-21 | Denso Corporation | Alternator for vehicle |
| BR9801695B1 (en) * | 1997-05-26 | 2009-08-11 | rotary electric machine. | |
| US6137201A (en) * | 1997-05-26 | 2000-10-24 | Denso Corporation | AC generator for vehicles |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60156234A (en) * | 1984-01-25 | 1985-08-16 | Shibaura Eng Works Co Ltd | Motor |
-
1986
- 1986-05-20 JP JP61117037A patent/JPH0744797B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62272836A (en) | 1987-11-27 |
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