JP5944713B2 - Stator manufacturing method - Google Patents

Stator manufacturing method Download PDF

Info

Publication number
JP5944713B2
JP5944713B2 JP2012070855A JP2012070855A JP5944713B2 JP 5944713 B2 JP5944713 B2 JP 5944713B2 JP 2012070855 A JP2012070855 A JP 2012070855A JP 2012070855 A JP2012070855 A JP 2012070855A JP 5944713 B2 JP5944713 B2 JP 5944713B2
Authority
JP
Japan
Prior art keywords
coil
stator core
adhesive tape
phase
coils
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.)
Active
Application number
JP2012070855A
Other languages
Japanese (ja)
Other versions
JP2013207820A (en
Inventor
昌幸 永井
昌幸 永井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebara Corp
Original Assignee
Ebara Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ebara Corp filed Critical Ebara Corp
Priority to JP2012070855A priority Critical patent/JP5944713B2/en
Publication of JP2013207820A publication Critical patent/JP2013207820A/en
Application granted granted Critical
Publication of JP5944713B2 publication Critical patent/JP5944713B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Manufacture Of Motors, Generators (AREA)

Description

本発明は、電動機の固定子の構造に係り、コイルエンドで交差する異相コイルの相間絶縁を強化する処理を施した構造のものに関する。   The present invention relates to a structure of a stator of an electric motor, and relates to a structure in which a treatment for strengthening interphase insulation of different-phase coils intersecting at a coil end is performed.

分布巻きを用いた電動機の固定子では、異相コイル間に絶縁性能を確保するために、各コイル相間に相間絶縁紙が挿入されている。
図8は相間絶縁紙を挿入して異相コイル間を絶縁した固定子を展開した模式図であり、同図に示されるように、固定子鉄心100のスロットに第1相コイル101、第2相コイル102及び第3相コイル103を装着し、固定子鉄心100の両端面から外方へ突出したコイルエンドにおいて各コイル101、102、103の間に帯状の相間絶縁紙104を挿入し、相間絶縁紙104で隔てられた各コイル101、102、103が接触するのを防止している。
In the stator of an electric motor using distributed winding, interphase insulating paper is inserted between the coil phases in order to ensure insulation performance between the different phase coils.
FIG. 8 is a schematic view in which a stator in which interphase insulating paper is inserted to insulate between different phase coils is developed. As shown in FIG. 8, the first phase coil 101 and the second phase are inserted in the slots of the stator core 100. The coil 102 and the third phase coil 103 are mounted, and a strip-shaped interphase insulating paper 104 is inserted between the coils 101, 102, 103 at the coil ends protruding outward from both end faces of the stator core 100, thereby interphase insulation. The coils 101, 102, and 103 separated by the paper 104 are prevented from coming into contact with each other.

固定子のコイルエンドを成形する実際の作業は、全てのコイルを固定子鉄心100に収めた後、コイルエンドにおける各コイルの間を手で開いて、相間絶縁紙104を挿入し得る大きさの隙間を、相の異なる各コイル間全てに形成し、そこに予め用意しておいた前記相間絶縁紙104を挿入して、これを各コイルの交差部に入り込むまで押し込んで設置する。
相間絶縁紙104を設置したならば、コイルエンドに大きな圧力を加えてコイルエンド整形を行い、さらに整形した形状を保持するためにレーシングを行い、その後、コイルエンドに圧力と衝撃を加えることによってコイルエンドの最終整形を行い、最終整形された形状にワニス処理により固めてコイルエンドの成形が完了する。
The actual work of forming the coil end of the stator is such that all the coils are housed in the stator core 100 and then the coils at the coil end are opened by hand and the interphase insulating paper 104 is inserted. A gap is formed between all the coils having different phases, and the interphase insulating paper 104 prepared in advance is inserted therein, and this is pushed in until it enters the intersection of each coil.
Once the interphase insulating paper 104 is installed, the coil end is shaped by applying a large pressure to the coil end, and then racing is performed to maintain the shaped shape, and then the coil end is subjected to pressure and impact. Final shaping of the end is performed, and the final shaped shape is solidified by varnish treatment to complete the shaping of the coil end.

このようにコイルエンドを成形する作業の過程で、コイルエンドには大きな圧力や衝撃が加えられ、その際、前記異相コイル間に挿入されていた相間絶縁紙104が変形したり位置がずれたりして異相コイル間の電気絶縁の機能が失われ、焼損に至らしめるおそれがある。
また、特に最終整形時に大きな圧力や衝撃が加わったときに、前記第1相コイル101と第2相コイル102、さらには第3相コイル103との交差部に部分的に大きな圧力が加わることにより、均一な厚みの相間絶縁紙104に局部的に大きな応力が作用して相間絶縁紙104を破損し、第1相コイル101と第2相コイル102、或いは第3相コイル103が直接接触して、レアショートを生じさせる場合がある。
In this process of forming the coil end, a large pressure or impact is applied to the coil end, and the interphase insulating paper 104 inserted between the different phase coils is deformed or displaced. Thus, the function of electrical insulation between the different-phase coils is lost, which may lead to burning.
In particular, when a large pressure or impact is applied at the time of final shaping, a large pressure is partially applied to the intersection of the first phase coil 101, the second phase coil 102, and further the third phase coil 103. The interphase insulating paper 104 having a uniform thickness is locally subjected to a large stress to damage the interphase insulating paper 104, and the first phase coil 101 and the second phase coil 102 or the third phase coil 103 are in direct contact with each other. , May cause rare shorts.

このようなコイルエンドの成形作業工程における相間絶縁紙104の位置ずれ等の問題を解消するため、前記帯状の相間絶縁紙に代えて、所定の径で半円弧状に形成された相間絶縁紙や、応力が加わる部分の厚みを部分的に厚くした相間絶縁紙を用いることが行われている(例えば特許文献1、2参照)。   In order to solve such problems as misalignment of the interphase insulating paper 104 in the coil end molding operation process, instead of the belt-like interphase insulating paper, the interphase insulating paper formed in a semicircular arc shape with a predetermined diameter, An interphase insulating paper in which the thickness of a portion to which stress is applied is partially increased is used (see, for example, Patent Documents 1 and 2).

特開平5−122910号公報JP-A-5-122910 実開平5−48555号公報Japanese Utility Model Publication No. 5-48555

前記半円弧状の相間絶縁紙や部分的に厚みの異なる相間絶縁紙は、製造する固定子の大きさや形状に合わせて専用に作製する必要があり、多数種の固定子の製造に対応するためには個別に作製しなければならないため材料費が上昇し、固定子製造コストの大幅な増加を招くという問題がある。   The semi-arc-shaped interphase insulating paper and interphase insulating paper having partially different thicknesses must be prepared exclusively according to the size and shape of the stator to be manufactured, in order to support the manufacture of many types of stators. However, there is a problem that the material cost rises because it must be manufactured individually, and the manufacturing cost of the stator is greatly increased.

また、前記専用に作製された相間絶縁紙をコイル間に挿入することにより、或いは帯状の相間絶縁紙とは別の絶縁紙片をコイルの交差部に挿入することにより異相コイル間の電気絶縁を図ったとしても、コイルエンドを成形する際に加えられる大きな圧力や衝撃によって、これら相間絶縁紙や絶縁紙片の挿入位置がずれ、異相コイル間に微小な隙間ができる可能性があることは否定できない。   In addition, the interphase insulating paper prepared for the above purpose is inserted between the coils, or an insulating paper piece different from the belt-like interphase insulating paper is inserted at the intersection of the coils to achieve electrical insulation between the different phase coils. Even so, it cannot be denied that the insertion position of the interphase insulating paper or the insulating paper piece may be shifted due to a large pressure or impact applied when the coil end is formed, and a minute gap may be formed between the different phase coils.

仮に異相コイル間に微小な隙間があったとしても、ワニス処理によってコイルエンドは固化されているため、外部から大きな荷重が加わらない限り異相コイル同士が接触する危険はなく、電動機が所定の周波数や電圧で駆動されていれば、電気絶縁が破壊される事態が生じることもない。
しかし、電動機をインバータ駆動する場合は、インバータ駆動による立ち上がりが急峻なサージ電圧が印加されると、微小な隙間を保って配置された異相コイル間で部分放電が発生するおそれがある。従って、コイルエンドを成形する際に大きな圧力や衝撃が加えられても、異相コイル同士を絶縁材で隔てておくことにより、異相コイル間の絶縁が確実になされている必要がある。
Even if there is a minute gap between the different phase coils, the coil ends are solidified by the varnish treatment, so there is no danger of the different phase coils contacting each other unless a large load is applied from the outside. If driven by voltage, there will be no situation where the electrical insulation is destroyed.
However, when the electric motor is driven by an inverter, if a surge voltage with a steep rise due to inverter driving is applied, partial discharge may occur between the different-phase coils arranged with a minute gap. Therefore, even when a large pressure or impact is applied when forming the coil end, it is necessary that the insulation between the different-phase coils is ensured by separating the different-phase coils with an insulating material.

本発明は従来技術の有するこのような問題点に鑑み、その目的とするところは、製造する固定子の大きさや形状に関わりなく、且つ専用に作製される相間絶縁紙や絶縁紙片を用いることなく、異相コイル間の絶縁を確実に確保して固定子の製造品質を向上させるとともに、異相間絶縁処理がなされたコイルエンドを効率的に成形できるようにすることを課題とする。   In view of such problems of the prior art, the object of the present invention is to use regardless of the size and shape of the stator to be manufactured, and without using a dedicated interphase insulating paper or insulating paper piece. It is an object of the present invention to ensure insulation between different-phase coils to improve the manufacturing quality of the stator and to efficiently form a coil end subjected to the different-phase insulation treatment.

前記課題を解決するため本発明による固定子は、固定子鉄心のコイルエンドで交差する異相コイル同士の少なくとも一方のコイルが、当該コイルが装着されたスロットの端部内縁から前記交差部に亘って軟質な絶縁材で被覆された構成を有する。
すなわち、固定子鉄心のコイルエンドで交差する異相コイル同士の少なくとも一方のコイルが、当該コイルが固定子鉄心のスロットに挿入された後、固定子鉄心の軸線に沿って一旦外側へ引き出された状態で前記スロットの端縁から内側にかかる根元部分から固定子鉄心の端部よりも外方へ突出したコイルエンドの曲線部側の前記交差部に向けて電気絶縁性を有する粘着テープが表面に巻かれて被覆され、且つ前記粘着テープは前記コイルの根元部側でコイルエンド側よりも密に巻き付けられて、前記交差部が相間絶縁されてなる構成を有する。
本発明による固定子のコイルエンドの絶縁構造は、固定子鉄心のコイルエンドの異相コイル同士の交差部の少なくとも一方のコイルの表面を軟質な絶縁材で被覆することにより、当該交差部を相間絶縁してなるものである。
なお、本発明でいう「コイル」は、エナメル電線のような一本の線材(コイル線)をいうのではなく、固定子鉄心のスロットに巻装される複数本の線材のまとまり、換言すれば複数本のコイル線のまとまりであるコイル線束を意味する。
In order to solve the above-described problem, the stator according to the present invention is configured such that at least one coil of the different-phase coils intersecting at the coil end of the stator core extends from the inner edge of the end of the slot in which the coil is mounted to the intersecting portion. The structure is covered with a soft insulating material .
That is, a state in which at least one coil of the different-phase coils intersecting at the coil end of the stator core is once pulled out along the axis of the stator core after the coil is inserted into the slot of the stator core Then, an adhesive tape having electrical insulation is wound on the surface from the root portion inward from the edge of the slot toward the intersecting portion on the curved portion side of the coil end protruding outward from the end portion of the stator core. The pressure-sensitive adhesive tape is covered and is wound more tightly on the base side of the coil than on the coil end side, and the crossing portion is insulated between phases .
According to the stator coil end insulation structure of the present invention, the surface of at least one of the intersecting portions of the different-phase coils of the stator core coil end is covered with a soft insulating material so that the intersecting portion is insulated between phases. It is made.
The “coil” in the present invention does not refer to a single wire (coil wire) such as an enameled wire, but is a group of a plurality of wires wound around a slot of a stator core, in other words, It means a coil wire bundle that is a group of a plurality of coil wires.

これによれば、コイルエンドを成形する際に加わる大きな圧力や衝撃によって相間絶縁紙の位置ずれや破損が発生し易い異相コイルの交差部において、交差するコイルの一方のコイル表面を軟質な絶縁材で被覆してあるので、相間絶縁紙が位置ずれ等しても異相コイル間の絶縁を確実に確保することが可能である。
絶縁材による被覆は交差するコイルの一方になされていればよく、コイルエンドのボリュームが大きくなることもない。コイルエンドのボリュームが大きくならない範囲で、交差するコイルの両方を絶縁材で被覆してもよい。
また、固定子鉄心のスロットに装着されたコイルの、スロット端部の内側の位置から交差部に亘る位置まで絶縁材で被覆することで、固定子鉄心のスロット端部角部におけるコイルの絶縁も強化することができる。
According to this, one coil surface of the intersecting coil is a soft insulating material at the crossing portion of the different phase coil where the interphase insulating paper is likely to be displaced or damaged by large pressure or impact applied when forming the coil end. Thus, even if the interphase insulating paper is misaligned, it is possible to ensure the insulation between the different phase coils.
It is only necessary to cover the insulating coil with one of the intersecting coils, and the coil end volume does not increase. As long as the volume of the coil end does not increase, both of the intersecting coils may be covered with an insulating material.
In addition, the insulation of the coil at the corner of the slot end of the stator core can be achieved by covering the coil mounted in the slot of the stator core with an insulating material from the position inside the slot end to the position extending over the intersection. Can be strengthened.

前記構成の固定子において、コイル表面を被覆する絶縁材は、電気絶縁性を有する薄肉の部材であって、コイルエンド整形作業の際に、コイルの表面を被覆した状態を保ったまま、外力が加えられて変形するコイルと一体に屈曲乃至湾曲変形が可能な、柔軟な性状のものを用いることが好ましい。例えば電気絶縁性を有する合成樹脂フィルムやシート、ゴム、紙材、或いはこれらの材質からなるチューブ状その他の形状に加工されたもの等を用いることができる。
絶縁材の被覆位置がずれないように、絶縁材はコイル表面に一体に固着しておくことが好ましい。固着は、接着剤や粘着剤等適宜な固着手段を用いることができ、例えば絶縁材の裏面に接着剤を塗布しておき、これをコイルの表面に巻き付けるなどすればよい。電気絶縁性のある熱収縮チューブをコイルに被せ、これを加熱して収縮させることにより、コイルが絶縁材で被覆されるようにしてもよい。
絶縁材として電気絶縁性を有する粘着テープを用いれば、コイルの表面に粘着テープを巻き付けることで、コイルを所望の長さに亘って簡単に被覆してコイルに安定的に固着させておくこができて好ましい。粘着テープは取り扱いの便宜に優れ、大きさや形状の異なる様々な仕様の固定子にフレキシブルに対応して、コイルエンド成形における絶縁処理作業を効率的に行うことが可能である。
In the stator configured as described above, the insulating material covering the coil surface is a thin member having electrical insulation, and external force is applied while maintaining the state where the coil surface is covered during the coil end shaping operation. It is preferable to use a flexible material that can be bent or curved integrally with the additional deformed coil. For example, a synthetic resin film or sheet having electrical insulating properties, rubber, paper material, or a tube-like or other shape made of these materials can be used.
It is preferable that the insulating material is integrally fixed to the coil surface so that the covering position of the insulating material does not shift. For fixing, an appropriate fixing means such as an adhesive or a pressure-sensitive adhesive can be used. For example, an adhesive may be applied to the back surface of the insulating material and wound around the surface of the coil. The coil may be covered with an insulating material by covering the coil with an electrically insulating heat-shrinkable tube and heating and contracting the coil.
If an adhesive tape having electrical insulation is used as an insulating material, the coil can be easily covered over a desired length and stably fixed to the coil by winding the adhesive tape around the surface of the coil. This is preferable. The adhesive tape is excellent in handling convenience, and can flexibly handle stators of various specifications having different sizes and shapes, and can efficiently perform the insulation processing work in the coil end molding.

本発明の固定子の製造方法は、固定子鉄心のスロットにコイルを装着する際に、レーシングを行ったときに互いに交差する位置の異相コイル同士の少なくとも一方のコイルに対し、当該コイルを固定子鉄心のスロットに挿入した後、
先ず、固定子鉄心の反口出線側において、固定子鉄心の軸線に沿って前記コイルが一旦外側へ引き出された状態で前記スロットの端縁から内側にかかる根元部分から固定子鉄心の端部よりも外方へ突出したコイルエンドの曲線部側の前記交差部に向けて電気絶縁性を有する粘着テープを前記コイルの表面に巻き、且つ前記粘着テープは前記コイルの根元部側でコイルエンド側よりも密に巻き付けて被覆し、
次いで、前記コイルの固定子鉄心の反対側において上記と同様にして、コイル表面に粘着テープを巻き付けて被覆し、巻き付け完了後、引き出していた前記コイルをスロット内に戻す処理をそれぞれ施し、
前記交差する対応位置のコイルを前記と同様の粘着テープの巻き付けによる被覆処理を行いつつ全てのスロットにコイルを装着した後、異相コイル間に相間絶縁紙を挿入し、コイルエンドの整形、レーシング、コイルエンドの最終整形を経てワニス処理を行うことを特徴とする。
According to the stator manufacturing method of the present invention, when a coil is mounted in a slot of a stator core, the coil is attached to the stator with respect to at least one of the different-phase coils at positions that intersect each other when racing is performed. After inserting into the core slot,
First, on the side of the stator core opposite to the lead wire side, the end of the stator core from the root portion extending inward from the end edge of the slot in a state where the coil is once pulled outward along the axis of the stator core. An adhesive tape having electrical insulation is wound around the surface of the coil toward the intersecting portion on the curved portion side of the coil end that protrudes further outward, and the adhesive tape is on the coil end side on the root portion side of the coil More tightly wrapped and covered,
Next, in the same manner as described above on the opposite side of the stator core of the coil, the surface of the coil is covered with an adhesive tape and coated, and after the winding is completed, the coil that has been drawn out is returned to the slot.
After mounting the coils in all the slots while performing the coating process by winding the adhesive tape similar to the above on the crossing corresponding position coils, inserting interphase insulating paper between the different phase coils, shaping the coil end, racing, The varnish treatment is performed after final shaping of the coil end.

これによれば、固定子鉄心のスロットにコイルを装着する際に、異相コイル同士で交差する部分に粘着テープを巻き付けて絶縁を確保するようにしているので、スロットに装着が完了した異相コイル間に相間絶縁紙を挿入した後、整形のためにコイルエンドに大きな圧力や衝撃を加えた際に、挿入した相間絶縁紙の位置がずれても、コイルに巻き付けた粘着テープにより異相コイル間の十分な絶縁性能が確保され、異相コイルの交差部における絶縁不良の発生を効果的に防止して、固定子及びこれを装備した電動機の品質を向上させることができる。   According to this, when attaching the coil to the slot of the stator core, the insulation tape is wound around the crossing portion of the different phase coils so as to ensure insulation. After inserting the interphase insulating paper into the coil end, if a large pressure or impact is applied to the coil end for shaping, even if the inserted interphase insulating paper is misaligned, the adhesive tape wound around the coil will Insulating performance is ensured, and it is possible to effectively prevent the occurrence of insulation failure at the intersection of the different phase coils, thereby improving the quality of the stator and the motor equipped with the stator.

本発明によれば、固定子のコイルエンドを成形する際に発生していた異相コイルの絶縁不良を確実に防止し、インバータ駆動による電動機の運転時に部分放電が発生する可能性の高い部位を効率的に絶縁することができ、異相コイル間の十分な絶縁性能を確保した固定子を提供して、固定子及びこれを装備した電動機の品質を向上させることできる。
また、専用の相間絶縁紙や絶縁紙片を用いることなく、大きさや形状の異なる様々な仕様の固定子にフレキシブルに対応して、コイルエンド成形における絶縁処理作業を効率的に行うことが可能である。
According to the present invention, it is possible to reliably prevent the insulation failure of the heterogeneous coil, which has occurred when the coil end of the stator is molded, and to efficiently perform the portion where partial discharge is likely to occur when the motor is driven by the inverter drive. Therefore, it is possible to improve the quality of the stator and the electric motor equipped with the stator by providing a stator that can be electrically insulated and ensure sufficient insulation performance between the different-phase coils.
In addition, without using dedicated interphase insulating paper or insulating paper pieces, it is possible to flexibly handle stators of various specifications with different sizes and shapes, and to efficiently perform insulation processing work in coil end molding. .

固定子鉄心のスロットに第1相コイルを挿入する工程を説明するための図である。It is a figure for demonstrating the process of inserting a 1st phase coil in the slot of a stator core. 反口出線側において第1相コイルの根元部に粘着テープを巻き付ける工程を説明するための図である。It is a figure for demonstrating the process of winding an adhesive tape around the root part of a 1st phase coil in the other end side. 口出線側において第1相コイルの根元部に粘着テープを巻き付ける工程を説明するための図である。It is a figure for demonstrating the process of winding an adhesive tape around the root part of a 1st phase coil in the lead wire side. スロットへの第1相コイルの挿入と粘着テープの巻き付けが完了した状態を説明するための図である。It is a figure for demonstrating the state which insertion of the 1st phase coil to the slot and winding of the adhesive tape were completed. 固定子鉄心のスロットに第2相コイルを挿入し粘着テープを巻き付ける工程を説明するための図である。It is a figure for demonstrating the process of inserting a 2nd phase coil in the slot of a stator core, and winding an adhesive tape. 固定子鉄心への装着が完了した異相コイル間に相間絶縁紙を挿入する工程を説明するための図である。It is a figure for demonstrating the process of inserting interphase insulation paper between the different phase coils in which mounting | wearing to the stator core was completed. コイルエンド整形後のレーシングを行う工程を説明するための図である。It is a figure for demonstrating the process of performing the racing after coil end shaping. 相間絶縁紙を挿入して異相コイル間を絶縁した固定子を展開した模式図である。It is the schematic diagram which expand | deployed the stator which inserted the phase insulation paper and insulated between the different phase coils.

本発明の好適な一実施形態を図面に基づいて説明する。
図1〜図7は、固定子鉄心に三相の固定子巻線(後述する第1相、第2相及び第3相の各コイル)を巻き付けて固定子を製造する一例の過程を示しており、本発明の固定子は例えば以下の作業工程を経て製造することができる。
A preferred embodiment of the present invention will be described with reference to the drawings.
1 to 7 show an example of a process for manufacturing a stator by winding three-phase stator windings (first phase, second phase and third phase coils described later) around a stator core. And the stator of this invention can be manufactured through the following work processes, for example.

作業を始めるにあたり、固定子鉄心SCに巻き付ける第1相コイル1、第2相コイル2及び第3相コイル3の各コイルは、巻き枠にて巻き付ける単位毎で巻き取っておく。また、固定子鉄心SCの内周面に複数形成された各スロットSLには、スロット絶縁紙4を挿入しておく。また、異相コイルの交差部の絶縁を確保するための粘着テープ5を用意しておく。粘着テープ5は、電気絶縁性を有する適宜な幅のものを用いることができる。 When starting the work, the coils of the first phase coil 1, the second phase coil 2 and the third phase coil 3 wound around the stator core SC are wound up for each unit wound by the winding frame. Further, the slot insulating paper 4 is inserted into each of the slots SL formed on the inner peripheral surface of the stator core SC. Moreover, the adhesive tape 5 for ensuring the insulation of the cross | intersection part of a different phase coil is prepared. As the adhesive tape 5, a tape having an appropriate width having electrical insulation can be used.

先ず、図1に示されるように、第1相コイル1の第1の単位コイルをスロットSLに挿入する。
挿入したならば、固定子鉄心SCの反口出線側において、挿入した第1相コイル1の根元部に粘着テープ5を巻き付ける。この際、第1相コイル1の、スロットSLの端部よりも内側に挿入されている部分にも粘着テープ5が巻かれるようにするため、挿入した第1相コイル1を固定子鉄心SCの軸線に沿って一旦外側へ引き出した状態で巻き付け作業を行い、引き出した第1相コイル1をスロットSLの内側に戻した状態でスロットSLの端縁から内側に5mm以上、粘着テープ5が巻き付けられているようにする。
First, as shown in FIG. 1, the first unit coil of the first phase coil 1 is inserted into the slot SL.
If inserted, the adhesive tape 5 is wound around the root portion of the inserted first phase coil 1 on the side opposite to the lead wire of the stator core SC. At this time, in order for the adhesive tape 5 to be wound around the portion of the first phase coil 1 that is inserted inside the end of the slot SL, the inserted first phase coil 1 is connected to the stator core SC. The winding work is performed with the first-phase coil 1 pulled out outward along the axis, and the pulled-out first phase coil 1 is returned to the inside of the slot SL, and the adhesive tape 5 is wound inward by 5 mm or more from the edge of the slot SL. To be.

第1相コイル1の、固定子鉄心SCの端部よりも外方に突出した部分に粘着テープ5を巻き付ける長さは、コイルエンドの成形処理の際に第1相コイル1に重なる異相コイルの交差部に亘る部分までの長さとする。この長さは、固定子の仕様によって異なるが、例えば固定子鉄心SCの端面から30mm以上は巻き付けておくことが好ましい。   The length of the first phase coil 1 where the adhesive tape 5 is wound around the portion protruding outward from the end of the stator core SC is the length of the different phase coil that overlaps the first phase coil 1 during the coil end forming process. It is the length to the part over the intersection. Although this length changes with the specifications of a stator, it is preferable to wind 30 mm or more from the end surface of the stator core SC, for example.

また、粘着テープ5の巻き付けは、第1相コイル1に対し、スロットSL側である根元側からコイルエンドの曲線部側に向けて行うようにする。また、コイルエンドの整形を行い易くするため、コイルの直線部分である根元側は粘着テープ5を比較的密にしっかりと巻き付け、曲線部分であるコイルエンド側は緩く巻き付けるようにすることが好ましい。   Further, the adhesive tape 5 is wound around the first phase coil 1 from the root side on the slot SL side toward the curved portion side of the coil end. Further, in order to facilitate the shaping of the coil end, it is preferable that the adhesive tape 5 is wound relatively densely and firmly on the root side which is a straight portion of the coil, and the coil end side which is a curved portion is wound loosely.

上記と同様にして反対側の第1相コイル1にも粘着テープ5を巻き付け、巻き付け完了後、図2に示されるように、引き出していた第1相コイル1をスロットSL内に戻す。このとき、前記の通り、固定子鉄心SCの端面から30mm以上は粘着テープ5が巻き付けられているようにする。   In the same manner as described above, the adhesive tape 5 is wound around the first phase coil 1 on the opposite side, and after the winding is completed, the drawn first phase coil 1 is returned into the slot SL as shown in FIG. At this time, as described above, the adhesive tape 5 is wound around 30 mm or more from the end face of the stator core SC.

次いで、図3に示されるように、固定子鉄心SCの口出線側においても、前記と同様にして、第1相コイル1の根元部分に粘着テープ5を巻き付ける。この際、口出しコイルには粘着テープ5を巻かないようにし、渡り線はコイルと一緒に粘着テープ5を巻き付ける。   Next, as shown in FIG. 3, the adhesive tape 5 is wound around the root portion of the first phase coil 1 in the same manner as described above on the lead wire side of the stator core SC. At this time, the adhesive tape 5 is not wound around the lead coil, and the adhesive tape 5 is wound around the connecting wire together with the coil.

次に、第1相コイル1の第2の単位コイルをスロットSLに挿入し、図4に示されるように、挿入したコイルに前記と同様にして粘着テープ5を巻き付ける。このときの粘着テープ5の巻き付け長さは、第1の単位コイルの巻き付け長さよりも若干長くし、例えば固定子鉄心SCの端面から40mm以上は粘着テープ5が巻き付けられているようにする。   Next, the second unit coil of the first phase coil 1 is inserted into the slot SL, and as shown in FIG. 4, the adhesive tape 5 is wound around the inserted coil in the same manner as described above. The winding length of the adhesive tape 5 at this time is slightly longer than the winding length of the first unit coil, and for example, the adhesive tape 5 is wound around 40 mm or more from the end face of the stator core SC.

次いで、第2相コイル2をスロットSLに挿入し、前記と同様にして粘着テープ5を巻き付ける。
この際、図5に示されるように、第2相コイル2は、その第1の単位コイル、第2の単位コイルの順でスロットSLに挿入し、粘着テープ5の巻き付け処理がなされるが、次工程で挿入される第三相コイル3と交差して当該コイルの下側に配置される部分のコイルのみに粘着テープ5を巻き付けるようにする。第2相コイル2をスロットSLに挿入後、第2相コイル2の整形処理を行う。
Next, the second phase coil 2 is inserted into the slot SL, and the adhesive tape 5 is wound in the same manner as described above.
At this time, as shown in FIG. 5, the second phase coil 2 is inserted into the slot SL in the order of the first unit coil and the second unit coil, and the adhesive tape 5 is wound. The adhesive tape 5 is wound only on the coil of the part which cross | intersects the 3rd phase coil 3 inserted at the next process, and is arrange | positioned under the said coil. After the second phase coil 2 is inserted into the slot SL, the shaping process of the second phase coil 2 is performed.

次に、第3相コイル3をスロットSLに挿入する。前記の作業工程で、第3相コイル3と交差する第1相コイル1及び第2相コイル2の表面には粘着テープ5が巻かれて交差部分の絶縁が確保されているため、第3相コイル3には粘着テープ5を巻き付けない。   Next, the third phase coil 3 is inserted into the slot SL. Since the adhesive tape 5 is wound around the surfaces of the first phase coil 1 and the second phase coil 2 that intersect with the third phase coil 3 in the above-mentioned work process, insulation of the intersecting portion is ensured. The adhesive tape 5 is not wound around the coil 3.

第3相コイル3のスロットSLへの挿入が完了したならば、図6に示されるように、各異相コイル間に相間絶縁紙6を挿入し、これを各コイルの交差部の奥まで入り込むように押し込む。
そして、コイルエンドに大きな圧力を加えてコイルエンド整形を行った後、図6に示されるように、整形した形状を保持するためにレーシングを行い、その後、コイルエンドの最終整形を行い、最終整形された形状にワニス処理により固めることでコイルエンドの成形が完了し、異相コイル間の絶縁を強化した固定子を得ることができる。
When the insertion of the third-phase coil 3 into the slot SL is completed, the interphase insulating paper 6 is inserted between the different-phase coils as shown in FIG. Push into.
Then, after applying a large pressure to the coil end and performing the coil end shaping, as shown in FIG. 6, racing is performed to maintain the shaped shape, and then the coil end is finally shaped and the final shaping is performed. By hardening the formed shape by varnish treatment, the molding of the coil end is completed, and a stator with enhanced insulation between different-phase coils can be obtained.

上記作業工程により製造された固定子は、コイルエンドの成形処理の際に発生していた異相コイルの絶縁不良が確実に防止され、インバータ駆動による電動機の運転時に部分放電が発生する可能性の高い部位を効率的に絶縁することができ、異相コイル間の十分な絶縁性能を確保することが可能である。また、専用の相間絶縁紙や絶縁紙片は不要であり、大きさや形状の異なる様々な仕様の固定子にフレキシブルに対応して、コイルエンド成形における絶縁処理作業を効率的に行うことができる。   The stator manufactured by the above work process reliably prevents the insulation failure of the out-of-phase coil that occurred during the coil end forming process, and is likely to cause partial discharge during operation of the electric motor driven by the inverter. It is possible to efficiently insulate the part, and to ensure sufficient insulation performance between the different phase coils. In addition, a dedicated interphase insulating paper or insulating paper piece is not required, and the insulating treatment work in the coil end molding can be efficiently performed by flexibly corresponding to stators of various specifications having different sizes and shapes.

なお、図示した実施の形態は例示に過ぎず、本発明を何ら限定するものではない。粘着テープに代えて、他の軟質な絶縁材で交差するコイルを被覆するようにしてもよい。また、本発明は、図示した固定子とは異なる極数、コイル数等、大きさや形状等の仕様の異なる固定子や電動機に適用が可能である。   The illustrated embodiment is merely an example and does not limit the present invention. Instead of the adhesive tape, the intersecting coils may be covered with another soft insulating material. Further, the present invention can be applied to a stator and an electric motor having different specifications such as the number of poles and the number of coils different from the illustrated stator, the number of coils, and the like.

SC 固定子鉄心、SL スロット、1 第1相コイル、2 第2相コイル、3 第3相コイル、4 スロット絶縁紙、5 粘着テープ、6 相間絶縁紙


SC stator core, SL slot, 1st phase coil, 2nd phase coil, 3rd phase coil, 4 slot insulation paper, 5 adhesive tape, 6 phase insulation paper


Claims (1)

固定子鉄心のスロットにコイルを装着する際に、レーシングを行ったときに互いに交差する位置の異相コイル同士の少なくとも一方のコイルに対し、当該コイルを固定子鉄心のスロットに挿入した後、
先ず、固定子鉄心の反口出線側において、固定子鉄心の軸線に沿って前記コイルが一旦外側へ引き出された状態で前記スロットの端縁から内側にかかる根元部分から固定子鉄心の端部よりも外方へ突出したコイルエンドの曲線部側の前記交差部に向けて電気絶縁性を有する粘着テープを前記コイルの表面に巻き、且つ前記粘着テープは前記コイルの根元部側でコイルエンド側よりも密に巻き付けて被覆し、
次いで、前記コイルの固定子鉄心の反対側において上記と同様にして、コイル表面に粘着テープを巻き付けて被覆し、巻き付け完了後、引き出していた前記コイルをスロット内に戻す処理をそれぞれ施し、
前記交差する対応位置のコイルを前記と同様の粘着テープの巻き付けによる被覆処理を行いつつ全てのスロットにコイルを装着した後、異相コイル間に相間絶縁紙を挿入し、コイルエンドの整形、レーシング、コイルエンドの最終整形を経てワニス処理を行うことを特徴とする固定子の製造方法。
When mounting the coil in the slot of the stator core, to at least one coil of different phase coils with each other at the intersection each other when subjected to racing, after inserting the coil into the slots of the stator core,
First, on the side of the stator core opposite to the lead wire side, the end of the stator core from the root portion extending inward from the end edge of the slot in a state where the coil is once pulled outward along the axis of the stator core. An adhesive tape having electrical insulation is wound around the surface of the coil toward the intersecting portion on the curved portion side of the coil end that protrudes further outward, and the adhesive tape is on the coil end side on the root portion side of the coil More tightly wrapped and covered,
Next, in the same manner as described above on the opposite side of the stator core of the coil, the surface of the coil is covered with an adhesive tape and coated, and after the winding is completed, the coil that has been drawn out is returned to the slot.
After mounting the coils in all the slots while performing the coating process by winding the adhesive tape similar to the above on the crossing corresponding position coils, inserting interphase insulating paper between the different phase coils, shaping the coil end, racing, A method of manufacturing a stator, comprising performing varnish treatment after final shaping of a coil end.
JP2012070855A 2012-03-27 2012-03-27 Stator manufacturing method Active JP5944713B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012070855A JP5944713B2 (en) 2012-03-27 2012-03-27 Stator manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012070855A JP5944713B2 (en) 2012-03-27 2012-03-27 Stator manufacturing method

Publications (2)

Publication Number Publication Date
JP2013207820A JP2013207820A (en) 2013-10-07
JP5944713B2 true JP5944713B2 (en) 2016-07-05

Family

ID=49526446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012070855A Active JP5944713B2 (en) 2012-03-27 2012-03-27 Stator manufacturing method

Country Status (1)

Country Link
JP (1) JP5944713B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6210705B2 (en) * 2013-04-16 2017-10-11 三菱電機株式会社 Rotating electric machine and stator used therefor
DE112021000859T5 (en) 2020-04-30 2022-11-24 Fanuc Corporation STATOR WITH INSULATION PAPER, MOTOR WITH STATOR AND METHOD OF MANUFACTURING THE MOTOR

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757298A (en) * 1953-04-30 1956-07-31 Westinghouse Electric Corp Insulated coils for electrical machines and processes for preparing them
JPS5166407A (en) * 1974-12-05 1976-06-09 Mitsubishi Electric Corp KAITENDENKI
JPH0521954Y2 (en) * 1986-08-20 1993-06-04
JPH0723003Y2 (en) * 1988-01-28 1995-05-24 株式会社東芝 coil
JP2792789B2 (en) * 1992-06-04 1998-09-03 株式会社大和電機製作所 End coil structure of pick-up coil for electrical equipment
JPH06284620A (en) * 1993-03-30 1994-10-07 Toshiba Corp Insulation coil for electric rotating machine
JP2011072071A (en) * 2009-09-24 2011-04-07 Toyota Motor Corp Stator of dynamo-electric machine

Also Published As

Publication number Publication date
JP2013207820A (en) 2013-10-07

Similar Documents

Publication Publication Date Title
JP6288266B2 (en) Stator assembly method and stator assembly apparatus
JP6053001B2 (en) Bus bar unit
JP6286129B2 (en) Bus bar unit
US10305355B2 (en) Stator manufacturing method and coil
US20170237304A1 (en) Stator for rotary electric machine
KR20150033758A (en) A Laminated Core for Motor having Structure Compatible with Insulation Coating
US20180254681A1 (en) Stator assembly method
JP4973420B2 (en) Stator manufacturing method
US10424984B2 (en) Rotating electrical machine coil, production method of rotating electrical machine coil, and rotating electrical machine
US11018543B2 (en) Method for manufacturing stator of rotary electric machine including a cassette coil
WO2012169059A1 (en) Stator of rotating electric machine, manufacturing method of stator of rotating electric machine, and rotating electric machine
KR101815794B1 (en) Insulation component for an electric machine and method of assembly
JP2011188724A (en) Stator for rotary electric machine, and method for manufacturing coil of the same
JP2017028831A (en) Rotary electric machine stator
JP2016135060A (en) Rotary electric machine stator
JP5944713B2 (en) Stator manufacturing method
JP2011166945A (en) Stator coil and motor
JP5663191B2 (en) Motor stator
JP5602404B2 (en) Split core unit and winding method of split core
JP2006325309A (en) Coil and its forming method, and motor
JP2011234503A (en) Method for manufacturing stator of motor
JP2010154619A (en) Manufacturing method of armature and armature
JP6394542B2 (en) Rotating electrical machine stator
JP2011182579A (en) Rotary electric machine
JP3499606B2 (en) Lead wire fixing device for rotating machine stator

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20140911

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20150602

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20150609

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150810

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20160216

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20160411

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20160510

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20160526

R150 Certificate of patent or registration of utility model

Ref document number: 5944713

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250