JP2000209802A - Insulation structure of joint part, insulation structure of dynamoelectric machine and manufacture of the same - Google Patents
Insulation structure of joint part, insulation structure of dynamoelectric machine and manufacture of the sameInfo
- Publication number
- JP2000209802A JP2000209802A JP11009044A JP904499A JP2000209802A JP 2000209802 A JP2000209802 A JP 2000209802A JP 11009044 A JP11009044 A JP 11009044A JP 904499 A JP904499 A JP 904499A JP 2000209802 A JP2000209802 A JP 2000209802A
- Authority
- JP
- Japan
- Prior art keywords
- cap
- joint
- joints
- insulating
- chamber
- 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.)
- Granted
Links
Landscapes
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は、回転電機の固定子
等の接合部間あるいはこの接合部とその他の部材との間
で電気的な絶縁を行う接合部の絶縁構造、回転電機の絶
縁構造およびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulating structure of a joint for electrically insulating between joints such as a stator of a rotating electric machine or between this joint and other members, and an insulating structure of a rotating electric machine. And its manufacturing method.
【０００２】[0002]
【従来の技術】自動車部品には多くの導線が使用されて
おり、２本あるいはそれ以上の導線同士を接合する接合
部も多い。この接合部は、導線同士を接合するために、
絶縁を目的とした皮膜を取り除いた状態にあり、導線の
金属素地が露出しているため、導電性を有している。し
たがって、この接合部を有する導線を介して信号や電力
の良好な伝送を実現するためには、異なる導線につなが
って隣接する接合部間、あるいは接合部と他の部材と
が、錆が発生したり塩水等が付着した環境下においても
短絡しないことが必要である。2. Description of the Related Art Many conductors are used in automobile parts, and there are many joints for joining two or more conductors. This joint is to join the conductors,
Since the film for insulation is removed and the metal base of the conductive wire is exposed, it has conductivity. Therefore, in order to realize good transmission of signals and electric power through the conductor having this joint, rust is generated between adjacent joints connected to different conductors or between the joint and other members. It is necessary that short circuits do not occur even in an environment where salt water or the like has adhered.
【０００３】接合部間あるいは接合部と他の部材との間
の短絡を防止する一般的な方法としては、接合部間ある
いは接合部と他の部材との間の短絡が生じる部分の距離
を長くする方法とこれらの間に絶縁材料を介在させる方
法があげられる。しかしながら、近年の自動車部品に対
する小型化の要請から、これらの間の距離を０．５ｍｍ
以下にする必要が生じており、短絡が生じる部分の距離
を長くするのではなく、接合部表面を絶縁材料で覆って
確実に絶縁することが必要不可欠になっている。[0003] As a general method of preventing a short circuit between joints or between a joint and another member, the distance between the joints or a portion where a short circuit occurs between the joint and another member is increased. And a method of interposing an insulating material between them. However, due to the recent demand for miniaturization of automotive parts, the distance between these parts is 0.5 mm.
Therefore, it is essential to cover the joint surface with an insulating material for reliable insulation, instead of increasing the distance of a portion where a short circuit occurs.
【０００４】[0004]
【発明が解決しようとする課題】ところで、有機絶縁材
料として一般に知られている液体樹脂や粉末樹脂は、皮
膜付きの導線と他の部材との間の固着を目的として使用
されるが、これらの絶縁材料を上述した接合部間あるい
は接合部と他の部材との間の絶縁を目的として使用する
場合には以下に示す問題がある。By the way, liquid resins and powder resins, which are generally known as organic insulating materials, are used for the purpose of fixing between a conductor having a coating and other members. When an insulating material is used for the purpose of insulation between the above-mentioned joints or between the joints and other members, there are the following problems.
【０００５】液体樹脂を用いた絶縁では、接合部を含む
導体を液体樹脂に浸漬し、取り出した後に、この液体樹
脂を加熱硬化させることになるが、一般に液体樹脂は粘
度が低く、しかも加熱時にさらに低粘度となるために、
接合部から硬化前の液体樹脂が流れ出して接合部が露出
してしまい、接合部間あるいは接合部と他の部材との間
の良好な絶縁性が確保できないことが確認されている。
このため、接合部表面に、ある程度以上の膜厚の絶縁皮
膜を形成しようとすると、液体樹脂の粘度とチクソ比を
精度よく調整する必要があり、材料の選定が難しくな
る。[0005] In the insulation using a liquid resin, a conductor including a joint portion is immersed in the liquid resin, and after being taken out, the liquid resin is heated and hardened. In order to further lower the viscosity,
It has been confirmed that the liquid resin before curing flows out of the joints and the joints are exposed, and good insulation between the joints or between the joints and other members cannot be ensured.
For this reason, if it is attempted to form an insulating film of a certain thickness or more on the joint surface, it is necessary to precisely adjust the viscosity and thixo ratio of the liquid resin, and it becomes difficult to select a material.
【０００６】また、粉体樹脂についても同様であり、あ
る程度以上の膜厚の絶縁皮膜を接合部表面に形成しよう
とすると、加熱溶融時の粘度とチクソ比を精度よく調整
する必要がある。[0006] The same applies to the powder resin. If an insulating film having a thickness of a certain degree or more is to be formed on the surface of the joint, it is necessary to precisely adjust the viscosity and the thixotropic ratio during heating and melting.
【０００７】本発明は、このような点に鑑みて創作され
たものであり、その目的は、接合部間あるいは接合部と
他の部材との間で良好な絶縁状態を確保することができ
る接合部の絶縁構造、回転電機の絶縁構造およびその製
造方法を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a joint capable of ensuring a good insulating state between joints or between a joint and another member. It is an object of the present invention to provide an insulating structure of a part, an insulating structure of a rotating electric machine, and a method of manufacturing the same.
【０００８】また、本発明の他の目的は、絶縁材料の粘
度やチクソ比の精度の高い調整が不要であって、絶縁材
料の選定が容易な接合部の絶縁構造、回転電機の絶縁構
造およびその製造方法を提供することにある。Another object of the present invention is to eliminate the need for highly accurate adjustment of the viscosity and the thixotropic ratio of the insulating material, and to facilitate the selection of the insulating material, the joint insulation structure, the rotating electric machine insulation structure, and the like. It is to provide a manufacturing method thereof.
【０００９】[0009]
【課題を解決するための手段】上述した課題を解決する
ために、本発明の接合部の絶縁構造は、キャップを用い
て接合部を収容する室を形成するとともに、この室内に
設けられた絶縁性樹脂によって接合部を埋設している。
キャップの室内に設けられた絶縁性樹脂に接合部が埋設
されるため、接合部の周囲を絶縁性樹脂で確実に覆うこ
とができ、隣接する接合部間や接合部とこれに近接する
他の部材との間で良好な絶縁状態を確保することができ
る。しかも、キャップによって形成される室内に絶縁性
樹脂を設けているため、この絶縁性樹脂として液体ある
いは粉体の樹脂材料を用いる場合であっても、接合部表
面に付着した樹脂材料が流れ出さないようにするために
粘性やチクソ比の高精度な調整が不要であって、絶縁材
料の選定が容易となる。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an insulating structure for a joint according to the present invention forms a chamber for accommodating the joint by using a cap, and forms an insulating chamber provided in the chamber. The joint is buried with a conductive resin.
Since the joint is buried in the insulating resin provided in the chamber of the cap, the periphery of the joint can be reliably covered with the insulating resin. A good insulation state can be secured between the member and the member. Moreover, since the insulating resin is provided in the chamber formed by the cap, even when a liquid or powder resin material is used as the insulating resin, the resin material attached to the joint surface does not flow out. Therefore, it is not necessary to adjust the viscosity and the thixotropic ratio with high precision, and the selection of the insulating material is facilitated.
【００１０】また、複数の接合部のそれぞれが、互いに
隣接して環状をなすように配置されている場合には、環
状に形成されたキャップを用いることが望ましい。接合
部の配置状態にあわせた形状のキャップを用いることに
より、各接合部を絶縁性樹脂によって埋設することが容
易となり、確実に各接合部間あるいは各接合部と他の部
材との間で良好な絶縁状態を保つことができる。また、
接合部の配置状態に沿った形状のキャップを用いている
ため、キャップの室の容積を小さくすることができ、部
品の小型化が可能になる。また、複数の接合部のそれぞ
れが、互いに隣接して多重の環状をなすように配置され
ている場合も同様であり、室が多重に形成されているキ
ャップを用いることが望ましい。多重に形成された室に
それぞれの多重に配置された各接合部が収納されるた
め、各接合部の良好な絶縁状態を保つことができるとと
もに、必要最小限の大きさを有するキャップを用いるこ
とができる。When each of the plurality of joints is arranged adjacent to each other to form an annular shape, it is desirable to use an annularly formed cap. By using a cap having a shape adapted to the arrangement of the joints, it becomes easy to embed each joint with an insulating resin, and reliably between each joint or between each joint and another member. A good insulation state. Also,
Since the cap having a shape conforming to the arrangement of the joints is used, the volume of the chamber of the cap can be reduced, and the size of components can be reduced. The same applies to a case where a plurality of joints are arranged adjacent to each other so as to form a multiple ring, and it is desirable to use a cap having multiple chambers. Each of the multiplexed chambers accommodates each of the multiplexed joints, so that a good insulation state of each of the joints can be maintained and a cap having a minimum necessary size is used. Can be.
【００１１】また、本発明の回転電機の絶縁構造は、回
転電機の固定子のコイルエンドに環状に配置された複数
の接合部を設けるとともに、環状のキャップによって形
成される環状の室内に絶縁性樹脂を設けてこれに各接合
部を埋設している。環状のコイルエンドにあわせて形成
されたに環状のキャップの室内に設けた絶縁性樹脂によ
ってコイルエンドの接合部が覆われるため、各接合部間
あるいは各接合部と他の部材との間で確実に絶縁状態を
保つことができ、固定子のコイルエンドの相間の漏れ電
流の発生やコイルエンドとフレームとの間の絶縁不良の
発生等を有効に防止することができる。また、キャップ
によって形成される室内に絶縁性樹脂を設けているた
め、この絶縁性樹脂として液体あるいは粉体の樹脂材料
を用いる場合であっても、接合部表面に付着した樹脂材
料が流れ出さないようにするために粘性やチクソ比の高
精度な調整が不要であって、絶縁材料の選定が容易とな
る。Further, the insulating structure of the rotating electric machine according to the present invention has a plurality of joints arranged in a ring at a coil end of a stator of the rotating electric machine, and has an insulating property in an annular chamber formed by an annular cap. Resin is provided and each joint is buried in the resin. The insulating resin provided in the chamber of the annular cap formed in accordance with the annular coil end covers the joints of the coil ends, so that the joints between the joints or between each joint and other members can be reliably formed. Thus, it is possible to effectively prevent the occurrence of leakage current between phases of the coil ends of the stator and the occurrence of insulation failure between the coil ends and the frame. Further, since the insulating resin is provided in the chamber formed by the cap, even when a liquid or powder resin material is used as the insulating resin, the resin material attached to the surface of the joint does not flow out. Therefore, it is not necessary to adjust the viscosity and the thixotropic ratio with high precision, and the selection of the insulating material is facilitated.
【００１２】また、コイルエンドの複数の接合部に対応
したキャップの室は、仕切壁によって複数の小室に仕切
ることが望ましい。仕切壁を設けることにより室の剛性
を増すことができるため、キャップを薄い材料で形成す
ることができ、材料コストの低減や部品の軽量化が可能
になる。また、これらの各小室には、複数の接合部を複
数のグループに分割して収容することが望ましい。各小
室毎に、対応したグループの各接合部を収納して絶縁性
樹脂に埋設させればよいため、キャップが傾斜した場合
であっても各小室毎に設けられた絶縁性樹脂がキャップ
の一部に集中することを防止することができ、確実に各
グループに含まれる接合部を絶縁性樹脂に埋設させるこ
とができ、良好な絶縁状態を確保することができる。It is desirable that the chamber of the cap corresponding to the plurality of joints of the coil end be partitioned into a plurality of small chambers by partition walls. By providing the partition walls, the rigidity of the chamber can be increased, so that the cap can be formed of a thin material, which can reduce material costs and reduce the weight of parts. In each of these small chambers, it is desirable that a plurality of joints are divided and accommodated in a plurality of groups. For each small chamber, the joints of the corresponding group may be stored and buried in the insulating resin. Therefore, even if the cap is inclined, the insulating resin provided for each small chamber may It is possible to prevent the joints included in each group from being buried in the insulating resin, and it is possible to secure a good insulating state.
【００１３】また、上述した仕切壁は、隣接する接合部
の間に形成することが望ましい。隣接する接合部間に仕
切壁を配置することにより、コイルエンドに変形等が生
じた場合であっても、隣接する接合部間同士が直接接触
することを防止することができるため、接合部間の絶縁
状態をさらに確実に保つことができる。Further, it is desirable that the above-mentioned partition wall is formed between adjacent joints. By arranging the partition wall between the adjacent joints, even if the coil end is deformed or the like, it is possible to prevent the adjacent joints from directly contacting each other. Can be maintained more reliably.
【００１４】また、本発明の回転電機の絶縁構造の製造
方法によれば、キャップの室内に絶縁性樹脂を充填した
後に、回転電機のコイルエンドに設けられた各接合部を
この絶縁性樹脂に浸漬することにより、絶縁性樹脂に対
する接合部の埋設を行っている。絶縁性樹脂はキャップ
内に充填されて使用されるため、絶縁性樹脂の液だれ等
を考慮する必要がなく、作業性を向上させることができ
る。また、各接合部を絶縁性樹脂に埋設した後に硬化さ
せることが望ましい。硬化前であれば各接合部を絶縁性
樹脂に埋設することが容易であり、また、埋設した後に
絶縁性樹脂を硬化させることにより、各接合部の表面を
確実に絶縁性樹脂で覆うことができ、良好な絶縁性を確
保することができる。Further, according to the method for manufacturing an insulating structure of a rotating electric machine of the present invention, after filling the insulating resin in the chamber of the cap, each joint provided at the coil end of the rotating electric machine is connected to the insulating resin. By immersing, the bonding portion is buried in the insulating resin. Since the insulating resin is used after being filled in the cap, it is not necessary to consider the dripping of the insulating resin, and the workability can be improved. Further, it is preferable that each joint is cured after being buried in an insulating resin. Before curing, it is easy to embed each joint in the insulating resin, and by curing the insulating resin after embedding, the surface of each joint can be reliably covered with the insulating resin. And good insulation can be secured.
【００１５】[0015]
【発明の実施の形態】以下、本発明を適用した一実施形
態の車両用交流発電機について、図面を参照しながら詳
細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle AC generator according to an embodiment of the present invention will be described below in detail with reference to the drawings.
【００１６】図１は、車両用交流発電機の全体構成を示
す図である。図１に示す車両用交流発電機１は、固定子
２、回転子３、フレーム４、整流器５等を含んで構成さ
れている。FIG. 1 is a diagram showing the overall configuration of an automotive alternator. The vehicle alternator 1 shown in FIG. 1 includes a stator 2, a rotor 3, a frame 4, a rectifier 5, and the like.
【００１７】固定子２は、固定子鉄心２２と、固定子巻
線を構成する複数の導体セグメント２３と、固定子鉄心
２２と各導体セグメント２３との間を電気絶縁するイン
シュレータ２４と、導体セグメント２３の接合部を覆う
位置に設けられた樹脂材料からなる環状のキャップ２６
と、このキャップ２６内に充填されて導体セグメント２
３の接合部が埋設される絶縁性樹脂２７とを備えてい
る。The stator 2 includes a stator core 22, a plurality of conductor segments 23 constituting a stator winding, an insulator 24 for electrically insulating between the stator core 22 and each conductor segment 23, and a conductor segment. An annular cap 26 made of a resin material and provided at a position covering the joining portion 23
And the conductor segments 2 filled in the cap 26
3 and an insulating resin 27 in which the bonding portion is embedded.
【００１８】回転子３は、絶縁処理された銅線を円筒状
かつ同心状に巻き回した界磁巻線８を、それぞれが６個
の爪部を有するポールコア７によって、シャフト６を通
して両側から挟み込んだ構造を有している。また、フロ
ント側のポールコア７の端面には、フロント側から吸い
込んだ冷却風を軸方向および径方向に吐き出すために軸
流式の冷却ファン１１が溶接等によって取り付けられて
いる。同様に、リヤ側のポールコア７の端面には、リヤ
側から吸い込んだ冷却風を径方向に吐き出すために遠心
式の冷却ファン１２が溶接等によって取り付けられてい
る。The rotor 3 sandwiches a field winding 8 in which an insulated copper wire is wound cylindrically and concentrically through a shaft 6 by pole cores 7 each having six claws from both sides. It has a rigid structure. An axial-flow-type cooling fan 11 is attached to the end face of the pole core 7 on the front side by welding or the like to discharge the cooling air sucked from the front side in the axial direction and the radial direction. Similarly, a centrifugal cooling fan 12 is attached to the end face of the rear pole core 7 by welding or the like to discharge the cooling air sucked from the rear side in the radial direction.
【００１９】フレーム４は、固定子２および回転子３を
収容しており、回転子３がシャフト６を中心に回転可能
な状態で支持されているとともに、回転子３のポールコ
ア７の外周側に所定の隙間を介して配置された固定子２
が固定されている。また、フレーム４は、固定子鉄心２
２の軸方向端面から突出した固定子巻線に対向した部分
に冷却風の吐出窓４２が、軸方向端面に冷却風の吸入窓
４１がそれぞれ設けられている。The frame 4 accommodates the stator 2 and the rotor 3. The frame 3 supports the rotor 3 so as to be rotatable about a shaft 6. The frame 4 is mounted on the outer periphery of the pole core 7 of the rotor 3. Stator 2 arranged via a predetermined gap
Has been fixed. In addition, the frame 4 includes the stator core 2
2, a cooling air discharge window 42 is provided at a portion facing the stator winding protruding from the axial end face, and a cooling air suction window 41 is provided at the axial end face.
【００２０】上述した構造を有する車両用交流発電機１
は、ベルト等を介してプーリ２０にエンジン（図示せ
ず）からの回転力が伝えられると回転子３が所定方向に
回転する。この状態で回転子３の界磁巻線８に外部から
励磁電圧を印加することにより、ポールコア７のそれぞ
れの爪部が励磁され、固定子巻線に３相交流電圧を発生
させることができ、整流器５の出力端子からは所定の直
流電流が取り出される。AC generator 1 for vehicle having the above structure
When a rotational force from an engine (not shown) is transmitted to the pulley 20 via a belt or the like, the rotor 3 rotates in a predetermined direction. In this state, by applying an excitation voltage to the field winding 8 of the rotor 3 from the outside, each claw portion of the pole core 7 is excited, and a three-phase AC voltage can be generated in the stator winding. A predetermined direct current is extracted from the output terminal of the rectifier 5.
【００２１】次に、固定子２の詳細について説明する。
図２は、固定子２の部分的な断面図である。また、図３
は固定子巻線を構成するセグメントの斜視図である。図
４は、固定子巻線の一方のコイルエンドに形成された接
合部を示す斜視図である。Next, the details of the stator 2 will be described.
FIG. 2 is a partial cross-sectional view of the stator 2. FIG.
FIG. 3 is a perspective view of a segment constituting a stator winding. FIG. 4 is a perspective view showing a joint formed at one coil end of the stator winding.
【００２２】固定子鉄心２２に形成された複数のスロッ
ト２５に装備された固定子巻線は複数の電気導体により
構成され、各スロット２５には偶数本（本実施形態では
４本）の電気導体が収容されている。一のスロット内の
４本の電気導体は、図２に示すように固定子鉄心２２の
径方向に沿って内側から内端層、内中層、外中層、外端
層の順で一列に配列されている。The stator winding provided in the plurality of slots 25 formed in the stator core 22 is constituted by a plurality of electric conductors, and each slot 25 has an even number (four in the present embodiment) of electric conductors. Is housed. As shown in FIG. 2, the four electric conductors in one slot are arranged in a line in the order of the inner end layer, the inner middle layer, the outer middle layer, and the outer end layer from the inside in the radial direction of the stator core 22 as shown in FIG. ing.
【００２３】一のスロット２５内の内端層の電気導体２
３１ａは、固定子鉄心２２の時計回り方向に向けて１磁
極ピッチ離れた他のスロット２５内の外端層の電気導体
２３１ｂと対をなしている。同様に、一のスロット２５
内の内中層の電気導体２３２ａは固定子鉄心２２の時計
回り方向に向けて１磁極ピッチ離れた他のスロット２５
内の外中層の電気導体２３２ｂと対をなしている。そし
て、これらの対をなす電気導体は、固定子鉄心２２の軸
方向の一方の端面側において連続線を用いることによ
り、ターン部２３１ｃ、２３２ｃを経由することで接続
される。The electric conductor 2 of the inner end layer in one slot 25
31a is paired with the electric conductor 231b of the outer end layer in the other slot 25 separated by one magnetic pole pitch in the clockwise direction of the stator core 22. Similarly, one slot 25
The inner and middle electric conductors 232a are separated from the other slots 25 by one magnetic pole pitch in the clockwise direction of the stator core 22.
It is paired with the inner and middle electric conductors 232b. These pairs of electric conductors are connected via the turn portions 231c and 232c by using a continuous wire on one end face side in the axial direction of the stator core 22.
【００２４】したがって、固定子鉄心２２の一方の端面
側においては、外中層の電気導体２３２ｂと内中層の電
気導体２３２ａとをターン部２３２ｃを経由して接続す
る連続線を、外端層の電気導体２３１ｂと内端層の電気
導体２３１ａとをターン部２３１ｃを経由して接続する
連続線が内包することになる。このように、固定子鉄心
２２の一方の端面側においては、対をなす電気導体の接
続部としてのターン部２３２ｃが、同じスロット２５内
に収容された他の対をなす電気導体の接続部としてのタ
ーン部２３１ｃにより囲まれる。外中層の電気導体２３
２ｂと内中層の電気導体２３２ａとの接続により中層コ
イルエンドが形成され、外端層の電気導体２３１ｂと内
端層の電気導体２３１ａとの接続により端層コイルエン
ドが形成される。Therefore, on one end face side of the stator core 22, a continuous line connecting the outer middle electric conductor 232b and the inner middle electric conductor 232a via the turn portion 232c is connected to the outer end electric conductor. A continuous line connecting the conductor 231b and the electric conductor 231a of the inner end layer via the turn portion 231c is included. Thus, on one end face side of the stator core 22, the turn portion 232c as a connection portion of a pair of electric conductors serves as a connection portion of another pair of electric conductors housed in the same slot 25. Is surrounded by the turn part 231c. Outer middle electric conductor 23
The middle coil end is formed by the connection between the inner conductor 2b and the inner conductor 232a, and the end coil end is formed by the connection between the outer conductor 231b and the inner conductor 231a.
【００２５】一方、一のスロット２５内の内中層の電気
導体２３２ａは、固定子鉄心２２の時計回り方向に向け
て１磁極ピッチ離れた他のスロット２５内の内端層の電
気導体２３１ａ’とも対をなしている。同様に、一のス
ロット２５内の外端層の電気導体２３１ｂ’は、固定子
鉄心２２の時計回り方向に向けて１磁極ピッチ離れた他
のスロット２５内の外中層の電気導体２３２ｂとも対を
なしている。そして、これらの電気導体は固定子鉄心２
２の軸方向の他方の端面側において接合により接続され
る。On the other hand, the electric conductor 232a of the inner middle layer in one slot 25 is also connected to the electric conductor 231a 'of the inner end layer in the other slot 25 separated by one magnetic pole pitch in the clockwise direction of the stator core 22. In pairs. Similarly, the outer-layer electric conductor 231b ′ in one slot 25 is paired with the outer-middle electric conductor 232b in the other slot 25 that is separated by one pole pitch in the clockwise direction of the stator core 22. No. And these electric conductors are the stator core 2
The two end faces in the axial direction are connected by joining.
【００２６】さらに、図３に示すように、内端層の電気
導体２３１ａと外端層の電気導体２３１ｂとが、一連の
電気導体をほぼＵ字状に成形してなる大セグメント２３
１により提供される。そして、内中層の電気導体２３２
ａと外中層の電気導体２３２ｂとが一連の電気導体をほ
ぼＵ字状に成形してなる小セグメント２３２により提供
される。基本となるＵ字状の導体セグメント２３は、大
セグメント２３１と小セグメント２３２によって形成さ
れる。各セグメント２３１、２３２は、スロット２５内
に収容されて軸方向に沿って延びる部分を備えるととも
に、軸方向に対して所定角度傾斜して延びる斜行部２３
１ｆ、２３１ｇ、２３２ｆ、２３２ｇを備える。これら
斜行部によって、固定子鉄心２２から軸方向の両端面に
突出するコイルエンドが形成されており、回転子３の軸
方向の両端面に取り付けられた冷却ファン１１、１２を
回転させたときに生じる冷却風の通風路は、主にこれら
斜行部の間に形成されている。Further, as shown in FIG. 3, the electric conductor 231a of the inner end layer and the electric conductor 231b of the outer end layer form a large segment 23 formed by forming a series of electric conductors into a substantially U-shape.
1 provided. Then, the electric conductor 232 of the inner middle layer
a and the outer middle electrical conductor 232b are provided by a small segment 232 formed by forming a series of electrical conductors in a generally U-shape. The basic U-shaped conductor segment 23 is formed by a large segment 231 and a small segment 232. Each of the segments 231 and 232 includes a portion that is accommodated in the slot 25 and extends along the axial direction, and the sloping portion 23 that extends at a predetermined angle with respect to the axial direction.
1f, 231g, 232f, and 232g. By these skewed portions, coil ends projecting from the stator core 22 at both axial end surfaces are formed, and when the cooling fans 11 and 12 attached to the axial both end surfaces of the rotor 3 are rotated. The ventilation path of the cooling air generated in the above is mainly formed between these inclined portions.
【００２７】以上の構成を全てのスロット２５の導体セ
グメント２３について繰り返す。そして、反ターン部側
のコイルエンド群において、外端層の端部２３１ｅ’と
外中層の端部２３２ｅ、並びに内中層の端部２３２ｄと
内端層の端部２３１ｄ’とがそれぞれ溶接、超音波溶
着、アーク溶接、ろう付け等の手段によって接合されて
外側接合部２３３ｂおよび内側接合部２３３ａが形成さ
れ、電気的に接続される。このため、固定子鉄心２２の
他方の端面側においては、外端層の電気導体２３１ｂ’
と外中層の電気導体２３２ｂとを接続する外側接合部２
３３ｂと、内端層の電気導体２３１ａ’と内中層の電気
導体２３２ａとを接続する内側接合部２３３ａとが、互
いに隣接して二重の環状に配置されている。The above configuration is repeated for the conductor segments 23 of all the slots 25. Then, in the coil end group on the side opposite to the turn, the end 231e ′ of the outer end layer and the end 232e of the outer middle layer, and the end 232d of the inner middle layer and the end 231d ′ of the inner end layer are welded and The outer joint 233b and the inner joint 233a are joined by means of sonic welding, arc welding, brazing, or the like, and are electrically connected. For this reason, on the other end face side of the stator core 22, the electric conductor 231 b ′ of the outer end layer
Joint 2 connecting the outer conductor 232b with the outer middle electric conductor 232b
The inner joint portion 233a that connects the inner end electric conductor 231a 'and the inner middle electric conductor 232a is arranged in a double annular shape adjacent to each other.
【００２８】また、これらの接合部２３３ｂ、２３３ａ
の互いの絶縁と保持のために、あるいはこれらの接合部
２３３ｂ、２３３ａと他の部材（主にフレーム４）との
間の絶縁のために、絶縁性樹脂２７が充填されたキャッ
プ２６が接合部２３３ｂ、２３３ａのそれぞれを覆うよ
うに設けられ、このキャップ２６内に充填された絶縁性
樹脂２７によって接合部２３３ｂ、２３３ａのそれぞれ
が埋設される。Further, these joints 233b, 233a
The cap 26 filled with the insulating resin 27 is used to insulate and hold each other or to insulate these joints 233b and 233a from other members (mainly the frame 4). 233 b, 233 a are provided to cover each, and the joints 233 b, 233 a are buried by the insulating resin 27 filled in the cap 26.
【００２９】図５は、キャップ２６を含む固定子２の径
方向の断面図である。また、図６はキャップ２６の形状
を示す平面図である。図７は、図６に示すＶＩＩ−ＶＩ
Ｉ線断面図である。図８は、キャップ２６の部分的な斜
視図であり、径方向に沿った断面構造が示されている。FIG. 5 is a radial sectional view of the stator 2 including the cap 26. FIG. 6 is a plan view showing the shape of the cap 26. FIG. 7 is a sectional view taken along the line VII-VI shown in FIG.
It is an I line sectional view. FIG. 8 is a partial perspective view of the cap 26, and shows a cross-sectional structure along the radial direction.
【００３０】これらの図に示すように、キャップ２６
は、環状であって二重に配置された接合部２３３ａ、２
３３ｂのそれぞれを収容するために、環状であって二重
の２つの室２６１、２６２を備えた２条構造を有してい
る。このキャップ２６は、径方向に沿った断面が箱形形
状に形成されており、そのほぼ中央に内周壁２６３と外
周壁２６４よりも低く形成された仕切壁２６５が形成さ
れている。仕切壁２６５と内周壁２６３によって内周側
の室２６１が形成され、仕切壁２６５と外周壁２６４に
よって外周側の室２６２が形成されている。As shown in these figures, the cap 26
Are joints 233a, 2
It has an annular, double-barreled structure with two double chambers 261, 262 to accommodate each of the 33b. The cap 26 has a box-shaped cross section along the radial direction, and a partition wall 265 formed lower than the inner peripheral wall 263 and the outer peripheral wall 264 at substantially the center. An inner peripheral chamber 261 is formed by the partition wall 265 and the inner peripheral wall 263, and an outer peripheral chamber 262 is formed by the partition wall 265 and the outer peripheral wall 264.
【００３１】内周側に配置された一方の室２６１には内
側接合部２３３ａのそれぞれが収容され、この室２６１
に充填された絶縁性樹脂２７に各接合部２３３ａが埋設
される。同様に、外周側に配置された他方の室２６２に
は外側接合部２３３ｂのそれぞれが収容され、この室２
６２に充填された絶縁性樹脂２７に各接合部２３３ｂが
埋設される。Each of the inner joint portions 233a is accommodated in one chamber 261 arranged on the inner peripheral side.
Each joint 233a is buried in the insulating resin 27 filled in. Similarly, each of the outer joint portions 233b is accommodated in the other chamber 262 arranged on the outer peripheral side, and
Each joint 233b is buried in the insulating resin 27 filled in 62.
【００３２】また、内周壁２６３と外周壁２６４の軸方
向高さは、接合部２３３ａあるいは接合部２３３ｂを形
成するために導体セグメント２３の絶縁被膜が剥がされ
て金属素地が露出している部分を完全に覆うように設定
されている。同様に、仕切壁２６５の軸方向高さは、隣
接する内側接合部２３３ａと外側接合部２３３ｂとの間
の短絡を防止するために必要な寸法に設定されている。
具体的には、キャップ２６を図８に示すようなＥ字型に
形成する場合や、図９に示すような山字型に形成する場
合が考えられる。The height of the inner peripheral wall 263 and the outer peripheral wall 264 in the axial direction is determined by the portion where the insulating coating of the conductor segment 23 is peeled off and the metal base is exposed to form the joint 233a or 233b. It is set to cover completely. Similarly, the axial height of the partition wall 265 is set to a dimension necessary to prevent a short circuit between the adjacent inner joint 233a and outer joint 233b.
Specifically, the case where the cap 26 is formed in an E-shape as shown in FIG. 8 or the case where the cap 26 is formed in a chevron shape as shown in FIG. 9 can be considered.
【００３３】また、図５に示したように、キャップ２６
の軸方向高さをコイルエンド高さよりも低く設定するこ
とにより、キャップ２６と固定子鉄心２２との間に隙間
を形成することができるため、この隙間を通して導体セ
グメント２３の冷却を行うことができる。あるいは、キ
ャップ２６の内周壁２６３、外周壁２６４、仕切壁２６
５の少なくとも一つの軸方向高さをコイルエンド高さと
ほぼ同じに設定することにより、キャップ２６の一部を
固定子鉄心２２の軸方向端面に接触させるようにしても
よい。この場合には、冷却風の流れが遮られる反面、キ
ャップ２６の軸方向の位置決めを簡単に行うことができ
るため、作業性の向上が可能になる。なお、キャップ２
６の内周壁２６３等の軸方向高さをコイルエンド高さと
ほぼ同じに設定する場合に、全周を当接する必要はな
く、複数箇所（例えば３箇所）を部分的に当接するよう
にして、この当接部分の追加によるキャップ２６の位置
決めの容易さと、この当接部分を除いて冷却風を通すこ
とによるコイルエンドの冷却性向上の両方の効果を実現
するようにしてもよい。Further, as shown in FIG.
Is set lower than the coil end height, it is possible to form a gap between the cap 26 and the stator core 22, so that the conductor segment 23 can be cooled through this gap. . Alternatively, the inner peripheral wall 263, the outer peripheral wall 264, and the partition wall 26 of the cap 26
By setting at least one of the heights 5 in the axial direction to be substantially the same as the coil end height, a part of the cap 26 may be brought into contact with the axial end face of the stator core 22. In this case, although the flow of the cooling air is blocked, the positioning of the cap 26 in the axial direction can be easily performed, so that the workability can be improved. In addition, cap 2
When the axial height of the inner peripheral wall 263 or the like of the No. 6 is set to be substantially the same as the coil end height, it is not necessary to abut on the entire circumference, and a plurality of locations (for example, three locations) are partially abutted. It is also possible to realize both effects of easy positioning of the cap 26 by adding the abutting portion and improving cooling performance of the coil end by passing the cooling air except for the abutting portion.
【００３４】図１０、図１１、図１２は、固定子２の接
合部２３３ａ、２３３ｂをキャップ２６内の絶縁性樹脂
２７に埋設する行程を示す図である。FIGS. 10, 11 and 12 show the process of embedding the joints 233a and 233b of the stator 2 in the insulating resin 27 in the cap 26.
【００３５】まず、図１０に示すように、絶縁性樹脂２
７が充填されていない空のキャップ２６を用意する。こ
のとき、２つの室２６１、２６２の開口部を上側に配置
する。次に、図１１に示すように、各室２６１、２６２
に上側の開口部から所定量の絶縁性樹脂２７を充填す
る。絶縁性樹脂２７としては、液体樹脂あるいは粉体樹
脂が用いられる。例えば、液体樹脂として液状シリコー
ンを用いることができ、粉体樹脂としてエポキシ粉体を
用いることができる。絶縁性樹脂２７は、キャップ２６
の各室２６１、２６２内に充填されるため、粘度やチク
ソ比の高精度な調整や不要であって、低粘度の液体樹脂
等を用いることができ、この絶縁性樹脂２７の充填作業
の効率を上げることができる。次に、図１２に示すよう
に、各電気導体の端部の接合が終了した後の固定子２を
各接合部２３３ａ、２３３ｂを下側にして、キャップ２
６の各室２６１、２６２内に充填された絶縁性樹脂２７
に浸漬する。その後、この絶縁性樹脂２７を硬化させ
る。硬化させる方法としては、加熱によって硬化させる
方法の他に、常温で放置して硬化させる方法を採用する
こともできる。加熱によって硬化させる場合には処理時
間の短縮が可能になり、常温で放置して硬化させる場合
には恒温槽等の特別な設備が不要であって、設備コスト
を抑えることができる。First, as shown in FIG.
An empty cap 26 not filled with 7 is prepared. At this time, the openings of the two chambers 261 and 262 are arranged on the upper side. Next, as shown in FIG.
Is filled with a predetermined amount of insulating resin 27 from the upper opening. As the insulating resin 27, liquid resin or powder resin is used. For example, liquid silicone can be used as the liquid resin, and epoxy powder can be used as the powder resin. The insulating resin 27 is
Is filled in each of the chambers 261 and 262, so that it is not necessary to adjust the viscosity and the thixotropic ratio with high precision or to use a low-viscosity liquid resin or the like. Can be raised. Next, as shown in FIG. 12, the stator 2 after the joining of the ends of the electric conductors is completed, with the joining portions 233a and 233b facing down, and the cap 2
The insulating resin 27 filled in each of the chambers 261 and 262 of No. 6
Soak in Thereafter, the insulating resin 27 is cured. As a method of curing, a method of curing at room temperature can be employed in addition to a method of curing by heating. In the case of curing by heating, the processing time can be shortened. In the case of curing at room temperature, special equipment such as a thermostat is not required, and the equipment cost can be reduced.
【００３６】このように、本実施形態の固定子２のコイ
ルエンドに含まれる各接合部２３３ａ、２３３ｂは、こ
れらの二重の環状の配置に合わせて形成されたキャップ
２６の各室２６１、２６２内に充填した絶縁性樹脂２７
に埋設することにより絶縁処理が行われる。したがっ
て、各接合部２３３ａ、２３３ｂの表面を確実に絶縁性
樹脂２７で覆うことができ、各接合部２３３ａ、２３３
ｂの間やこれらとその他の部材との間で良好な絶縁状態
を確保することができる。また、キャップ２６の各室２
６１、２６２内に絶縁性樹脂２７が充填されるため、液
だれ等を防止するために絶縁性樹脂２７の粘度やチクソ
比を高精度に調整する必要がなく、例えば低粘度の液体
樹脂や粉体樹脂を使用することもでき、材料選定が容易
になる。また、絶縁性樹脂２７を硬化させた後は、キャ
ップ２６の各室２６１、２６２内の絶縁性樹脂２７全体
が一体となって各接合部２３３ａ、２３３ｂに付着する
ため、絶縁性樹脂２７が部分的に剥離して欠落すること
を防止することができる。As described above, the joints 233a and 233b included in the coil end of the stator 2 of the present embodiment are formed by the respective chambers 261 and 262 of the cap 26 formed in accordance with these double annular arrangements. Insulating resin 27 filled inside
Insulation treatment is performed by embedding in the substrate. Therefore, the surfaces of the joints 233a and 233b can be reliably covered with the insulating resin 27, and the joints 233a and 233b
A good insulating state can be ensured between b and between these and other members. In addition, each room 2 of the cap 26
Since the insulating resin 27 is filled in the insides 61 and 262, it is not necessary to adjust the viscosity and the thixo ratio of the insulating resin 27 with high precision in order to prevent dripping or the like. Body resin can also be used, and material selection becomes easy. After the insulating resin 27 is cured, the entire insulating resin 27 in each of the chambers 261 and 262 of the cap 26 is integrally attached to each of the joints 233a and 233b. It can be prevented that it is peeled off and dropped off.
【００３７】図１３は、本実施形態の固定子２を用いて
冷熱サイクル試験を実施した結果を示す図である。この
冷熱サイクル試験は、２００°Ｃ、１時間と−４０°
Ｃ、１時間とを交互に１０００サイクル繰り返したとき
の漏れ電流を測っており、この漏れ電流が１ｍＡ以下の
ときに「異常なし」と判定される。また、試験サンプル
としては、回転方向に隣接する接合部２３３ａ、２３３
ｂの間隔が０．５ｍｍに設定された固定子２を用いた。FIG. 13 is a diagram showing the results of a cooling / heating cycle test performed using the stator 2 of this embodiment. This cooling / heating cycle test was performed at 200 ° C for 1 hour and -40 °
C, the leakage current when 1000 cycles were alternately repeated for 1 hour was measured. When the leakage current was 1 mA or less, it was determined that there was no abnormality. Further, as the test sample, the joints 233a, 233 adjacent in the rotation direction are used.
The stator 2 in which the interval b was set to 0.5 mm was used.
【００３８】図１３において、「実施例１」〜「実施例
３」のそれぞれは、いずれも絶縁樹脂２７として液状シ
リコーンを用いた場合であり、実施例３のみがフィラー
としてアルミナ（Ａｌ2 Ｏ3 ）が添加されている。いず
れの絶縁性樹脂２７も粘度が３０Ｐａで硬化後の弾性率
が１ＭＰａとなった。また、実施例２のみは電気導体２
３１ａ、２３１ｂがアルミニウムで、それ以外の実施例
１、３、４については電気導体２３１ａ、２３１ｂとし
て銅が用いられている。また、「実施例４」は、絶縁性
樹脂２７として可とう性のエポキシ樹脂あるいはウレタ
ン樹脂を用いた場合であり、粘度は３０Ｐａ・ｓとなっ
た。In FIG. 13, each of "Example 1" to "Example 3" is a case where liquid silicone is used as the insulating resin 27, and only Example 3 has alumina (Al 2 O 3) as a filler. ) Has been added. Each of the insulating resins 27 had a viscosity of 30 Pa and an elastic modulus after curing of 1 MPa. Further, only the electric conductor 2 is used in the second embodiment.
Aluminum is used for 31a and 231b, and copper is used for the electric conductors 231a and 231b in the other Examples 1, 3 and 4. "Example 4" is a case in which a flexible epoxy resin or a urethane resin was used as the insulating resin 27, and the viscosity was 30 Pa · s.
【００３９】図１３に示した冷熱サイクル試験の結果か
らわかるように、キャップ２６の各室２６１、２６２内
に充填する絶縁性樹脂２７として液状シリコーンや可と
う性エポキシ（あるいはウレタン）を用いた場合には、
電気導体２３１ａ等が銅であるかアルミニウムであるか
によらず、また、フィラーの混入の有無にかかわらず、
良好な試験結果が得られた。このことから、キャップ２
６の各室２６１、２６２内に充填された絶縁性樹脂２７
に接合部２３３ａ、２３３ｂを埋設させる絶縁構造を用
いた場合には、材料選定の範囲を広くすることができ
る。As can be seen from the results of the cooling / heating cycle test shown in FIG. 13, when liquid silicone or flexible epoxy (or urethane) is used as the insulating resin 27 to be filled in the chambers 261 and 262 of the cap 26. In
Regardless of whether the electric conductor 231a or the like is made of copper or aluminum,
Good test results were obtained. From this, Cap 2
The insulating resin 27 filled in each of the chambers 261 and 262 of No. 6
When an insulating structure in which the joints 233a and 233b are embedded is used, the range of material selection can be widened.
【００４０】なお、本発明は上記実施形態に限定される
ものではなく、本発明の要旨の範囲内で種々の変形実施
が可能である。上述した実施形態では、キャップ２６の
形状を固定子２のコイルエンドに含まれる各接合部２３
３ａ、２３３ｂの配置状態に合わせて、二重であって環
状に形成したが、それ以外の形状としてもよい。The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. In the above-described embodiment, the shape of the cap 26 is changed to each joint 23 included in the coil end of the stator 2.
In accordance with the arrangement state of 3a and 233b, it is double and formed in an annular shape, but may be formed in other shapes.
【００４１】図１４は、仕切壁を取り除いたキャップ２
６Ａの斜視図である。内周壁２６３と外周壁２６４の間
の仕切壁を取り除くことにより、キャップ２６Ａの形状
が単純化され、キャップ２６Ａを製造する際に使用する
成形型の形状が単純になり、型寿命が長くなることによ
る製造コストの低減が可能になる。FIG. 14 shows the cap 2 with the partition wall removed.
It is a perspective view of 6A. By removing the partition wall between the inner peripheral wall 263 and the outer peripheral wall 264, the shape of the cap 26A is simplified, and the shape of the mold used when manufacturing the cap 26A is simplified, and the life of the mold is extended. Thus, the manufacturing cost can be reduced.
【００４２】図１５および図１６は、仕切壁の形成位置
を変更したキャップの斜視図である。図１５に示すキャ
ップ２６Ｂは、周方向に隣接する接合部２３３ａ、２３
３ｂを分離するように、径方向に沿った仕切壁２６５Ｂ
を形成したものであり、各仕切壁２６５Ｂによって分離
された小室２６１Ｂには、径方向に一列に並んで配置さ
れる２つの接合部２３３ａ、２３３ｂが１グループとな
って収容される。このように仕切壁２６５Ｂを増やして
多くの小室２６１Ｂを形成することにより、固定子２を
製造する際にキャップ２６Ｂが傾斜した場合であって
も、各小室２６１Ｂに含まれる絶縁性樹脂２７の移動が
少なくてすむため、接合部２３３ａ、２３３ｂの周辺を
絶縁性樹脂２７で覆うことが容易となる。また、図１６
に示すキャップ２６Ｃは、全ての接合部２３３ａ、２３
３ｂのそれぞれを分離するように、周方向および径方向
に沿った仕切壁２６５Ｃを形成したものであり、各仕切
壁２６５Ｃによって分離された各小室２６１Ｃには、接
合部２３３ａ、２３３ｂのいずれかが１つずつ個別に収
容される。このように、各接合部２３３ａ、２３３ｂを
個別に小室２６１Ｃに収容することにより、各接合部２
３３ａ、２３３ｂ同士の短絡や各接合部２３３ａ、２３
３ｂと他の部材との短絡を確実に防止することができ
る。FIGS. 15 and 16 are perspective views of the cap in which the position where the partition wall is formed is changed. The cap 26B shown in FIG.
Partition wall 265B along the radial direction so as to separate 3b.
In the small chamber 261B separated by each partition wall 265B, two joints 233a and 233b arranged in a line in the radial direction are accommodated as a group. By forming a large number of small chambers 261B by increasing the number of partition walls 265B in this way, even when the cap 26B is inclined when the stator 2 is manufactured, the movement of the insulating resin 27 included in each small chamber 261B can be achieved. Therefore, the periphery of the joints 233a and 233b can be easily covered with the insulating resin 27. FIG.
The cap 26C shown in FIG.
A partition wall 265C along the circumferential direction and the radial direction is formed so as to separate each of the small chambers 3b. Each of the small chambers 261C separated by each partition wall 265C has one of the joining portions 233a and 233b. One by one is housed individually. As described above, by housing the joints 233a and 233b individually in the small chamber 261C,
33a, 233b and the joints 233a, 23
A short circuit between 3b and another member can be reliably prevented.
【００４３】図１７は、２つに分割したキャップの斜視
図である。固定子２に含まれるキャップは必ずしも１つ
である必要はなく、図１７に示すように２分割された２
つのキャップ２６Ｄ、２６Ｅを組み合わせて用いるよう
にしてもよい。一方のキャップ２６Ｄは、周方向に一列
に配置された複数の内側接合部２３３ａを収容するため
に単条であって環状に形成されている。同様に、他方の
キャップ２６Ｅは、周方向に一列に配置された複数の外
側接合部２３３ｂを収容するために単条であって環状に
形成されている。このように、分割された複数のキャッ
プ２６Ｄ、２６Ｅを用いることにより、近接配置される
１あるいは複数の接合部ごとに絶縁性樹脂２７を用いた
絶縁処理が可能であり、複数の接合部が空間に分散して
配置されている場合などにおいて、キャップ２６Ｄ、２
６Ｅの小型化や絶縁性樹脂２７の使用量の低減が可能に
なる。FIG. 17 is a perspective view of a cap divided into two parts. The stator 2 does not necessarily include one cap, and as shown in FIG.
The two caps 26D and 26E may be used in combination. One of the caps 26D is formed as a single piece and annular in order to accommodate a plurality of inner joints 233a arranged in a line in the circumferential direction. Similarly, the other cap 26E is formed as a single piece and annular in order to accommodate the plurality of outer joints 233b arranged in a line in the circumferential direction. As described above, by using the plurality of divided caps 26D and 26E, it is possible to perform the insulation treatment using the insulating resin 27 for each of the one or more joints arranged close to each other. In the case where the caps 26D,
This makes it possible to reduce the size of 6E and reduce the amount of the insulating resin 27 used.
【００４４】また、上述した実施形態では、固定子２の
コイルエンドに二重であって環状に接合部２３３ａ、２
３３ｂが配置されている場合を説明したが、各スロット
２５に２本の電気導体が収容されている場合には環状一
列に接合部が配置され、各スロット２５に６本以上の電
気導体が収容されている場合には環状に３列以上の接合
部が配置される場合もあるが、これらの各接合部を絶縁
する場合にも本発明を適用することができる。In the above-described embodiment, the coil ends of the stator 2 are double and annularly joined to the joining portions 233a and 233a.
Although the case where 33b is arranged has been described, when two electric conductors are accommodated in each slot 25, joints are arranged in a line in a ring, and six or more electric conductors are accommodated in each slot 25. In this case, three or more rows of joints may be arranged in a ring shape. However, the present invention can be applied to a case where these joints are insulated.
【００４５】また、上述した実施形態では、回転電機と
しての車両用交流発電機の固定子に含まれる接合部の絶
縁構造について説明したが、車両用交流発電機の固定子
以外の部品に含まれる接合部（例えば整流器５に含まれ
る接合部）の絶縁構造や、車両用交流発電機以外の回転
電機あるいは回転電機以外の電気機器に含まれる接合部
の絶縁構造に本発明を適用することができる。Further, in the above-described embodiment, the insulating structure of the joint included in the stator of the vehicle alternator as the rotating electric machine has been described. However, it is included in the parts other than the stator of the vehicle alternator. The present invention can be applied to an insulating structure of a joint (for example, a joint included in the rectifier 5) and an insulating structure of a joint included in a rotating electric machine other than the vehicle AC generator or an electric device other than the rotating electric machine. .
【図１】車両用交流発電機の全体構成を示す図である。FIG. 1 is a diagram showing an overall configuration of a vehicle alternator.
【図２】固定子の部分的な断面図である。FIG. 2 is a partial sectional view of a stator.
【図３】固定子巻線を構成するセグメントの斜視図であ
る。FIG. 3 is a perspective view of a segment constituting a stator winding.
【図４】固定子巻線の一方のコイルエンドに形成された
接合部を示す斜視図である。FIG. 4 is a perspective view showing a joint formed at one coil end of a stator winding.
【図５】キャップを含む固定子の径方向の断面図であ
る。FIG. 5 is a radial sectional view of a stator including a cap.
【図６】キャップの形状を示す平面図である。FIG. 6 is a plan view showing a shape of a cap.
【図７】図６に示すＶＩＩ−ＶＩＩ線断面図である。FIG. 7 is a sectional view taken along line VII-VII shown in FIG.
【図８】キャップの部分的な斜視図である。FIG. 8 is a partial perspective view of a cap.
【図９】キャップの変形例を示す斜視図である。FIG. 9 is a perspective view showing a modification of the cap.
【図１０】固定子の接合部をキャップ内の絶縁性樹脂に
埋設する行程を示す図である。FIG. 10 is a diagram showing a process of embedding a joint portion of a stator in an insulating resin in a cap.
【図１１】固定子の接合部をキャップ内の絶縁性樹脂に
埋設する行程を示す図である。FIG. 11 is a diagram showing a process of embedding a joint portion of a stator in an insulating resin in a cap.
【図１２】固定子の接合部をキャップ内の絶縁性樹脂に
埋設する行程を示す図である。FIG. 12 is a diagram illustrating a process of embedding a joint portion of a stator in an insulating resin in a cap.
【図１３】本実施形態の固定子を用いて冷熱サイクル試
験を実施した結果を示す図である。FIG. 13 is a diagram showing a result of performing a thermal cycle test using the stator of the present embodiment.
【図１４】キャップの他の変形例を示す斜視図である。FIG. 14 is a perspective view showing another modification of the cap.
【図１５】キャップの他の変形例を示す斜視図である。FIG. 15 is a perspective view showing another modification of the cap.
【図１６】キャップの他の変形例を示す斜視図である。FIG. 16 is a perspective view showing another modification of the cap.
【図１７】キャップの他の変形例を示す斜視図である。FIG. 17 is a perspective view showing another modification of the cap.
１ 車両用交流発電機 ２ 固定子 ３ 回転子 ５ 整流器 １１、１２ 冷却ファン ２２ 固定子鉄心 ２３ 導体セグメント ２３３ａ、２３３ｂ 接合部 ２５ スロット ２６ キャップ ２６１、２６２ 室 ２６３ 内周壁 ２６４ 外周壁 ２６５ 仕切壁 ２７ 絶縁性樹脂 DESCRIPTION OF SYMBOLS 1 Vehicle alternator 2 Stator 3 Rotor 5 Rectifier 11, 12 Cooling fan 22 Stator iron core 23 Conductor segment 233a, 233b Joint 25 Slot 26 Cap 261, 262 room 263 Inner peripheral wall 264 Outer peripheral wall 265 Partition wall 27 Insulation Resin
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 一秀 愛知県刈谷市昭和町１丁目１番地 株式会 社デンソー内 (72)発明者 加藤 充 愛知県刈谷市昭和町１丁目１番地 株式会 社デンソー内 (72)発明者 加藤 文夫 愛知県刈谷市昭和町１丁目１番地 株式会 社デンソー内 Ｆターム(参考） 5H604 AA05 AA08 BB14 CC01 CC05 CC15 CC16 DB01 PB03 PC01 PC04 QA01 QA08 QB12 5H615 AA01 BB14 PP01 PP14 QQ03 QQ06 SS05 SS44 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Kazuhide Sato 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside Denso Corporation (72) Inventor Mitsuru Kato 1-1-1, Showa-cho, Kariya-shi, Aichi Co., Ltd. Within DENSO (72) Inventor Fumio Kato 1-1-1 Showa-cho, Kariya-shi, Aichi F-term within DENSO Corporation (reference) 5H604 AA05 AA08 BB14 CC01 CC05 CC15 CC16 DB01 PB03 PC01 PC04 QA01 QA08 QB12 5H615 AA01 BB14 PP01 PP14 Q03 QQ06 SS05 SS44
Claims (10)
と、 を備えることを特徴とする接合部の絶縁構造。1. A joint comprising: a joint portion of an electric conductor; a cap forming a chamber accommodating the joint portion; and an insulating resin provided in the chamber and burying the joint portion. Section insulation structure.
ており、 前記キャップは、環状に形成されていることを特徴とす
る接合部の絶縁構造。2. The insulating structure for a joint according to claim 1, wherein a plurality of the joints are annularly arranged adjacent to each other, and the cap is formed in an annular shape.
置されており、 前記キャップは、前記室が多重に形成されていることを
特徴とする接合部の絶縁構造。3. The bonding according to claim 1, wherein a plurality of the bonding portions are arranged adjacent to each other in a multiplex annular shape, and the cap has a multiplicity of the chambers. Section insulation structure.
ドに設けられ、環状に配置された複数の接合部と、 前記接合部を収容する環状の室を形成する環状のキャッ
プと、 前記室内に設けられ、前記接合部を埋設する絶縁性樹脂
と、 を備えることを特徴とする回転電機の絶縁構造。4. A plurality of joints provided in a coil end of a stator included in the rotating electric machine and arranged in an annular shape; an annular cap forming an annular chamber for accommodating the joint; And an insulating resin for burying the joint portion. An insulating structure for a rotating electric machine, comprising:
ことを特徴とする回転電機の絶縁構造。5. The insulating structure for a rotating electric machine according to claim 4, wherein the chamber is partitioned into a plurality of small chambers by a partition wall.
割されて収容されていることを特徴とする回転電機の絶
縁構造。6. The insulating structure for a rotating electric machine according to claim 5, wherein the plurality of joints are divided and accommodated in a plurality of groups in the small chamber.
ことを特徴とする回転電機の絶縁構造。7. The insulating structure for a rotating electric machine according to claim 5, wherein the partition wall is located between the adjacent joints.
いることを特徴とする回転電機の絶縁構造。8. The rotation according to claim 5, wherein the plurality of joints are arranged in multiple annular shapes, and the partition walls are multiple and form the annular small chamber. Electric machine insulation structure.
造方法において、 前記環状のキャップの前記室内に前記絶縁性樹脂を所定
量充填し、 この室内に前記接合部を入れて前記絶縁性樹脂に浸漬
し、 前記接合部を前記絶縁性樹脂内に埋設することを特徴と
する回転電機の絶縁構造の製造方法。9. The method for manufacturing an insulating structure for a rotating electric machine according to claim 4, wherein a predetermined amount of the insulating resin is filled in the chamber of the annular cap, and the joining portion is put in the chamber. A method of manufacturing an insulating structure for a rotating electric machine, wherein the method is immersed in a resin, and the joint is buried in the insulating resin.
縁性樹脂を硬化させることを特徴とする回転電機の絶縁
構造の製造方法。10. The method for manufacturing an insulating structure for a rotating electric machine according to claim 9, wherein the insulating resin is cured after the bonding portion is embedded in the insulating resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00904499A JP3921859B2 (en) | 1999-01-18 | 1999-01-18 | Insulating structure of joint, insulating structure of rotating electrical machine, and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00904499A JP3921859B2 (en) | 1999-01-18 | 1999-01-18 | Insulating structure of joint, insulating structure of rotating electrical machine, and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000209802A true JP2000209802A (en) | 2000-07-28 |
| JP3921859B2 JP3921859B2 (en) | 2007-05-30 |
Family
ID=11709655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00904499A Expired - Lifetime JP3921859B2 (en) | 1999-01-18 | 1999-01-18 | Insulating structure of joint, insulating structure of rotating electrical machine, and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3921859B2 (en) |
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-
1999
- 1999-01-18 JP JP00904499A patent/JP3921859B2/en not_active Expired - Lifetime
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