JP5785863B2 - Electric motor stator and permanent magnet rotating electric machine - Google Patents

Electric motor stator and permanent magnet rotating electric machine Download PDF

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Publication number
JP5785863B2
JP5785863B2 JP2011264363A JP2011264363A JP5785863B2 JP 5785863 B2 JP5785863 B2 JP 5785863B2 JP 2011264363 A JP2011264363 A JP 2011264363A JP 2011264363 A JP2011264363 A JP 2011264363A JP 5785863 B2 JP5785863 B2 JP 5785863B2
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bobbin
adjacent
flange
main body
flange portion
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JP2013118749A (en
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酒井　俊彦
俊彦 酒井
雅志 藤嶽
雅志 藤嶽
弘樹 横山
弘樹 横山
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Hitachi Industrial Equipment Systems Co Ltd
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Hitachi Industrial Equipment Systems Co Ltd
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Priority to PCT/JP2012/066179 priority patent/WO2013080597A1/en
Priority to CN201280034877.1A priority patent/CN103688445B/en
Priority to TW101123772A priority patent/TWI495227B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12—Machines characterised by the bobbins for supporting the windings

Description

本発明は電動機の固定子および該固定子を搭載した永久磁石式回転電機に関する。   The present invention relates to a stator of an electric motor and a permanent magnet type rotating electric machine equipped with the stator.

電動機として、例えばサーボモータの如く、機械や電子機器に組み込まれるものにあっては、限りなく小型化が要求されている。   An electric motor that is incorporated in a machine or an electronic device, such as a servo motor, is required to be as small as possible.

モータを小型化する手段としては、一般的にコイルの巻回数を増やし、コイル巻線密度を高めることが有効である。   As means for reducing the size of the motor, it is generally effective to increase the coil winding density by increasing the number of coil turns.

その一手段として、固定子（ステータ）を構成するティースコアを分割して複数の分割コアとし、該分割コアごとにコイル（巻線）を所定回数巻回して巻装した後、これらを必要なスロット数だけ組み立てて一つの円環状の固定子とした固定子構造とする方法がある。   As one means, the tee score constituting the stator (stator) is divided into a plurality of divided cores, and a coil (winding) is wound around the divided cores a predetermined number of times, and these are necessary. There is a method in which a stator structure is formed by assembling the number of slots into one annular stator.

しかし、係る固定子構造にあっては、各分割コアのティースコアに施すコイル巻線絶縁物の表面は、絶縁能力上、沿面となり、ここに２つの導電性部分間の、絶縁物の表面に沿った最短距離の沿面距離が存在することになる。   However, in such a stator structure, the surface of the coil winding insulator applied to the tee score of each split core is creeping in terms of insulation capability, and here the surface of the insulator between the two conductive portions There will be a creepage distance of the shortest distance along.

一般に、モータを制御する制御機器や装置を取り扱う場合、安全上および動作上、絶縁空間距離、沿面距離、温度上昇などが規定されている。   In general, when a control device or device for controlling a motor is handled, insulation space distance, creepage distance, temperature rise, and the like are specified for safety and operation.

沿面距離は例えば２００Ｖ級のモータでは２〜３ｍｍが要求される。   For example, a creepage distance of 2 to 3 mm is required for a 200V class motor.

従って、モータにあっては、この沿面による絶縁距離（絶縁空間距離、沿面距離など）の低下が問題になる。特に、モータを小型化する場合、モータ内部の高密度化が要求され、これに伴って２つの導電性部分の絶縁距離も小さくなり、安全上および動作上、必要とされる絶縁性能が得にくいと言う大きな課題があった。   Therefore, in the motor, a decrease in insulation distance (insulation space distance, creepage distance, etc.) due to this creepage becomes a problem. In particular, when a motor is downsized, a high density inside the motor is required, and as a result, the insulation distance between the two conductive portions is also reduced, making it difficult to obtain the insulation performance required for safety and operation. There was a big problem to say.

従来技術として、以下のような電動機の固定子構造が提案されている。   As a prior art, the following stator structure of an electric motor has been proposed.

すなわち、一つは、固定子（ステータ）に絶縁ボビンを介してコイルを巻回（励磁巻線）するステータ巻線構造において、絶縁ボビンの側部の両端に一体形成された弾性舌片を設け、該舌片を各コイル巻線間に位置するように構成し、該舌片によりコイル巻線とステータ間の電気的導通を防止可能とし、コイル巻線の絶縁を向上させてなる回転電機のステータ巻線構造である（特許文献１）。   That is, one is a stator winding structure in which a coil is wound around a stator (stator) via an insulating bobbin (excitation winding), and elastic tongue pieces integrally formed at both ends of the side portion of the insulating bobbin are provided. The tongue piece is configured to be positioned between the coil windings, and the tongue piece can prevent electrical continuity between the coil winding and the stator, thereby improving the insulation of the coil winding. It is a stator winding structure (Patent Document 1).

また、他の一つは、固定子鉄心のティース部を含むコア本体の内側に装着され、コイル収容部と内壁部を有する２つのインシュレータ（絶縁材）を備え、該内壁部の周方向の端面に互い違いの段差状の連結部を設け、該連結部により複数のインシュレータを組み合わせ円環状の固定子構造を構成した電動機のインシュレータである（特許文献２）。   The other one is mounted on the inner side of the core body including the teeth portion of the stator core, and includes two insulators (insulating materials) having a coil housing portion and an inner wall portion, and an end surface in the circumferential direction of the inner wall portion This is an insulator for an electric motor in which a staggered step-like connecting portion is provided, and a plurality of insulators are combined by the connecting portion to form an annular stator structure (Patent Document 2).

また、さらに従来として、Ｈ字状の固定子鉄心の内周面を覆うように両側から嵌め込むように構成され、かつ固定子鉄心のコイル巻線部のティース面側を残して固定子鉄心の外周を覆うインシュレータを含み、該インシュレータのフランジ部の円周方向の端部に、ヨーク部およびティース部を含むコアメンバー同士を周方向に相互に連結するための２つの連結手段、つまり各コアメンバー同士を、ロータ出力軸を中心に環状に連結するためのフック部と、同フック部が係止される係止軸を設け、かつインシュレータを、ティース面およびヨーク部片に沿って平行な一対のフランジ部を有するボビン状に形成し、ティース面側のフランジを、ティース面側よりも軸線方向に低くなるように形成し、ティース面が最も高い位置とすることにより、ロータとの間のギャップを小さくし、幅方向寸法を小さくしてなるアキュシャルギャップ型電動機が提案されている（特許文献３，４，５，６参照）。   Further, conventionally, the stator core is configured to be fitted from both sides so as to cover the inner peripheral surface of the H-shaped stator core, and the teeth core side of the coil winding portion of the stator core is left, and the stator core Two connecting means for connecting the core members including the yoke portion and the teeth portion to each other in the circumferential direction at the circumferential end of the flange portion of the insulator including the insulator covering the outer periphery, that is, each core member A hook portion for connecting the two members in a ring shape around the rotor output shaft and a locking shaft for locking the hook portion are provided, and the insulator is connected in parallel along the teeth surface and the yoke piece. By forming it into a bobbin shape having a flange portion, forming the flange on the teeth surface side to be lower in the axial direction than the tooth surface side, and making the teeth surface the highest position, Reducing the gap between the over data, it has been proposed Accu interstitial gap type electric motor is formed by reducing the width dimension (see Patent Document 3, 4, 5 and 6).

また、分割型ステータコアのＩ形状の分割コアの外周部に沿って囲まれたボビンを備え、該ボビンの内部フランジに結合溝と結合突起を形成し、外部フランジに円周形成面を設け、分割コアとボビンの間の組み立てを、熱硬化型樹脂を使用したインサートモールディング方式などで一体成形したスリム型ステータが提案されている（特許文献７，８参照）。   In addition, a bobbin surrounded by the outer periphery of the I-shaped split core of the split stator core is provided, a coupling groove and a coupling protrusion are formed on the inner flange of the bobbin, and a circumferential surface is provided on the outer flange. There has been proposed a slim stator in which an assembly between a core and a bobbin is integrally formed by an insert molding method using a thermosetting resin (see Patent Documents 7 and 8).

特開２０００−１７５３９３号公報JP 2000-175393 A 特開２００７−２５２０３１号公報JP 2007-252031 A 特開２００８−１１８８３３号公報JP 2008-118833 A 特開２００８−１２５２７８号公報JP 2008-125278 A 特開２０１０−８８１６６号公報JP 2010-88166 A 特開２０１１−１１４９９３号公報JP 2011-114993 A 特開２０１０−１５４７４０号公報JP 2010-154740 A 特開２０１０−１５４７４１号公報JP 2010-154741 A

特許文献１に記載された発明は、絶縁物の形状を工夫したものであり、コイル巻線全体を包み込む形状、つまり絶縁物として絶縁ボビンを利用したものである。   The invention described in Patent Document 1 is a device in which the shape of an insulator is devised, and a shape that wraps the entire coil winding, that is, an insulating bobbin is used as an insulator.

しかし、この絶縁ボビンは、その側部の両端に一体形成された弾性舌片を設け、該舌片を各巻線間に位置しているため、その分コイル巻線の密度が制約され、モータの性能を向上することができない課題がある。   However, this insulating bobbin is provided with elastic tongue pieces integrally formed at both ends of the side portion, and the tongue pieces are located between the windings, so that the density of the coil windings is limited accordingly, and the motor There is a problem that the performance cannot be improved.

また、特許文献２に記載された発明は、円周方向に組み立てられた外側インシュレータおよび内側インシュレータの２つのインシュレータにより、コイル収容部を挟み込むようにして構成し、かつ該インシュレータのコイル収容部内の収容されたコイル収容部に対してコーティング剤を射出し、コイル巻線部全体にコーティング剤をコーティングするように構成されたものである。   Further, the invention described in Patent Document 2 is configured such that a coil housing portion is sandwiched between two insulators of an outer insulator and an inner insulator assembled in a circumferential direction, and the insulator is accommodated in the coil housing portion. The coating agent is injected into the coil receiving portion thus formed, and the entire coil winding portion is coated with the coating agent.

従って、コーティング剤を射出するとき、コーティング剤がインシュレータの外部に漏れないように工夫する必要があり、このため、上述したインシュレータの内壁部の周方向の端面に互い違いの段差状の連結部を設けたものであり、その構成が複雑な構成となっている。   Therefore, when injecting the coating agent, it is necessary to devise so that the coating agent does not leak to the outside of the insulator. For this reason, staggered step-like connecting portions are provided on the circumferential end surface of the inner wall portion of the insulator described above. The structure is complicated.

換言すれば、形状の異なる２種類のインシュレータの端部に形成された互い違いの段差状の連結部は、このコーティング剤が硬化する前に、該コーティング剤が該コイル収容部内から流れ出すことを抑えることを目的として形成したものであって、インシュレータの連結部の連結により、一見沿面距離を増大させる形状であるかのように見えるが、インシュレータの連結部には、界面が存在していることに相違ない。   In other words, the staggered step-shaped connecting portions formed at the end portions of two types of insulators having different shapes prevent the coating agent from flowing out of the coil housing portion before the coating agent is cured. It is formed for the purpose of, and it seems that it is a shape that increases the creeping distance at first glance due to the connection of the connecting portion of the insulator, but the interface is present in the connecting portion of the insulator. Absent.

従って、その結果として、沿面距離は、何ら改善されているとは言えず、従来と同様に沿面距離に基づく上述した課題は残り、該課題を是正する技術とはなり得ていない。   Therefore, as a result, it cannot be said that the creepage distance is improved at all, and the above-described problem based on the creepage distance remains as in the prior art, and it cannot be a technique for correcting the problem.

また、内側のインシュレータと外側のインシュレータをもってコイル線を挟み込む構成としているため、それらの組み立てが容易でなく、モータの小型化には適しているとは言い難い。   Further, since the coil wire is sandwiched between the inner insulator and the outer insulator, it is difficult to assemble them, and it is difficult to say that they are suitable for miniaturization of the motor.

のみならず、コイル巻線の絶縁のためのコーティング剤を射出するものにあっては、コーティング剤は勿論、その射出手段、手間を要し、コスト的にも不利である。   In addition, in the case of injecting the coating agent for insulation of the coil winding, the coating agent as well as its injection means and labor are required, which is disadvantageous in terms of cost.

また、特許文献３−６に記載された発明は、ステータのティース面とロータのマグネット面との隙間に基づく磁気損失を防止することを目的とするものであり、特許文献７−８に記載された発明は、ロータとステータの間のエアギャップ誤差に起因して発生する振動を軽減することを目的とするものであって、これらには、分割ティースコアとコイル間の沿面距離を大きくとることまでは考慮されていないのみならず、Ｈ字状の固定子鉄心の内周面を覆うように両側から嵌め込むように構成され、かつ固定子鉄心のコイル巻線部のティース面側を残して固定子鉄心の外周を覆うインシュレータであって、連結手段がフック部と係止軸、また突起や溝からなるフランジ形状にあっては、沿面距離を長くし、電動機をより小型化することは期待できない。   The invention described in Patent Documents 3-6 is intended to prevent magnetic loss based on the gap between the teeth surface of the stator and the magnet surface of the rotor, and is described in Patent Documents 7-8. Another object of the present invention is to reduce vibrations caused by an air gap error between the rotor and the stator. For these, the creepage distance between the divided tee score and the coil is increased. Is not considered, but is configured to be fitted from both sides so as to cover the inner peripheral surface of the H-shaped stator core, and leaves the teeth surface side of the coil winding portion of the stator core. If the insulator covers the outer periphery of the stator core, and the connecting means is in the form of a flange consisting of a hook part and a locking shaft, and a protrusion or groove, it is expected to increase the creepage distance and make the motor more compact so No.

本発明はかかる課題に鑑みてなされ、その目的は、電動機（モータ）の小型化に対応可能であって、安全上および動作上、必要とされる沿面距離が確保でき、小型モータへの適用が可能な固定子構造を備えた電動機および永久磁石式回転電機を提供することにある。   The present invention has been made in view of such a problem, and an object of the present invention is to cope with downsizing of an electric motor (motor), and a creeping distance required for safety and operation can be secured, and application to a small motor is possible. An object of the present invention is to provide an electric motor and a permanent magnet type rotating electrical machine having a possible stator structure.

前記目的を達成するため、本発明は、例えば電動機の固定子において、分割された複数のティースコアと、該ティースコアの先端部が挿入される複数の凹部を内周面にかつ軸方向に形成したヨークコアと、コイルが巻装される絶縁材からなる複数のボビンとを備え、前記ボビンは、前記コイルが巻装され、前記ティースコアが装着される貫通孔を有するボビン本体部と、該ボビン本体部の外径側の端部に形成された鍔部と、該ボビン本体部の内径側の端部に形成された鍔部を含み、前記内径側端部の鍔部は、前記ボビンを前記ヨークコアに装着し、隣り合うボビン同士を組み立てたとき、嵌合する凹凸部が形成された内側面を有し、周方向に延び、かつ軸方向に延びた板状の突出片を形成し、該突出片をもって、前記コイルと前記ティースコア間の沿面距離を長く確保可能な構成とした電動機の固定子である。   In order to achieve the above object, the present invention, for example, in a stator of an electric motor, forms a plurality of divided tee scores and a plurality of recesses into which tip portions of the tee scores are inserted on the inner peripheral surface and in the axial direction. And a plurality of bobbins made of an insulating material around which the coil is wound. The bobbin has a bobbin main body having a through hole in which the coil is wound and the tea score is mounted, and the bobbin. A flange portion formed at an outer diameter side end portion of the main body portion and a flange portion formed at an inner diameter side end portion of the bobbin main body portion, and the flange portion of the inner diameter side end portion includes the bobbin When the adjacent bobbins are attached to the yoke core, the plate-like projecting piece extending in the circumferential direction and extending in the axial direction is formed, having an inner surface formed with an uneven portion to be fitted, With a protruding piece, the coil and the teasco A creepage distance longer ensured possible configurations and the motor stator between.

また、更に本発明は、例えば前述した電動機の固定子を搭載した永久磁石式回転電機である。   Furthermore, the present invention is a permanent magnet type rotating electrical machine equipped with the above-described electric motor stator, for example.

本発明によれば、従来の課題を是正することができ、コイル巻線部の絶縁物であるボビンの沿面距離を低下することなく、安全上および動作上、必要な沿面距離が確保可能な電動機の固定子構造を得ることができる。これにより、電圧仕様を変えることなく、小型モータへの適用も可能である。   ADVANTAGE OF THE INVENTION According to this invention, the electric motor which can correct the conventional subject and can ensure a necessary creepage distance on safety and operation | movement, without reducing the creepage distance of the bobbin which is an insulator of a coil winding part. The stator structure can be obtained. Thereby, application to a small motor is also possible without changing the voltage specification.

また、本発明によれば、固定子の（ティースコア）の内径と固定子のスロット数が決められていて、その内径を大きくしたり、そのスリット数を増やしたり、あるいは一つのティースコアに割り振られ周方向の長さが変更できないような場合であっても、安全上および動作上、必要な沿面距離が確保でき、より小型化したいモータに対しても、適用可能な電動機の固定子を得ることができる。   Further, according to the present invention, the inner diameter of the stator (tee score) and the number of slots of the stator are determined, and the inner diameter is increased, the number of slits is increased, or one tee score is allocated. Even if the length in the circumferential direction cannot be changed, the necessary creepage distance can be secured for safety and operation, and a motor stator that can be applied to motors that are more compact is obtained. be able to.

これらにより、小型で高性能な回転電機を提供できる。   Thus, a small and high-performance rotating electrical machine can be provided.

図１は本発明の電動機の固定子の概略構造を示す構成図である。FIG. 1 is a block diagram showing a schematic structure of a stator of an electric motor according to the present invention. 図２は本発明の固定子のティースコアに装着された絶縁部材であるボビンの構造を拡大して示す構成図である。FIG. 2 is an enlarged view showing the structure of a bobbin that is an insulating member attached to the teascore of the stator of the present invention. 図３は図２のボビンを複数個組み合わせたときの拡大図である。FIG. 3 is an enlarged view when a plurality of bobbins in FIG. 2 are combined. 図４は本発明の固定子のヨークコアとティースコアとボビンの要部を示す分解斜視図である。FIG. 4 is an exploded perspective view showing the essential parts of the yoke core, tee score and bobbin of the stator of the present invention. 図５は本発明の固定子のヨークコアとティースコアとボビンの組み立てを説明するための分解斜視図である。FIG. 5 is an exploded perspective view for explaining the assembly of the yoke core, tee score and bobbin of the stator of the present invention. 従来の沿面距離を模式的に示した図である。It is the figure which showed the conventional creepage distance typically.

以下、本発明の実施形態について図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１は本発明に関する電動機の固定子を構成する主要部品の固定子構造を示す構成図、図２は図１のボビンの一部（単体）を拡大してボビンの構造を示す構成図、図３は複数のボビンを組み合わせて隣り合うボビン同士の組合せについて説明するための構成図、図４および図５は本発明の固定子のヨークコアとティースコアとボビンの要部および組み立てを示す分解斜視図である。   FIG. 1 is a configuration diagram showing a stator structure of main parts constituting a stator of an electric motor according to the present invention, and FIG. 2 is a configuration diagram showing a structure of a bobbin by enlarging a part (single unit) of the bobbin in FIG. 3 is a configuration diagram for explaining a combination of adjacent bobbins by combining a plurality of bobbins, and FIGS. 4 and 5 are exploded perspective views showing a yoke core, a teascore, main portions of the bobbin, and assembly of the stator of the present invention. It is.

同図において、１は電動機の回転子（図示せず）と相互作用して回転モーメントを発生する固定子（ステータ）を示し、該固定子は、円筒状のヨークコア（ヨーク鉄心）１１と、該ヨークコアの円筒内側に配設され、複数の分割コアからなるＴ字状のティースコア１２と、該複数のティースコアが挿入される貫通孔を有する絶縁材からなる複数のボビン１３と、該複数のボビンにそれぞれ巻回、巻装されるコイル巻線（励磁巻線）１４を含んでいる。   In the figure, reference numeral 1 denotes a stator (stator) that generates a rotating moment by interacting with a rotor (not shown) of an electric motor. The stator includes a cylindrical yoke core (yoke iron core) 11, A T-shaped tea score 12 made of a plurality of divided cores, a plurality of bobbins 13 made of an insulating material having a through hole into which the plurality of tea scores are inserted, and the plurality of bobbins 13 disposed inside the cylinder of the yoke core; A coil winding (excitation winding) 14 wound around and wound around the bobbin is included.

固定子１に分割されたティースコア１２を採用することにより、固定子に一体化されたコアを採用するものに比べて整列させて銅線を巻き付けることが可能となる。   By adopting the tea score 12 divided into the stator 1, it becomes possible to align and wrap the copper wire as compared with the one employing the core integrated with the stator.

すなわち高密度にコイルを巻けるので、エネルギー変換の効率低下を招く原因となる「銅損」を抑えることが可能であり、モータの性能を向上させることができる。   That is, since the coil can be wound at a high density, it is possible to suppress “copper loss” that causes a reduction in energy conversion efficiency, and to improve the performance of the motor.

本実施例では、ティースコア１１とコイル１４は、そのスロット数が１２個の場合である。なお、ボビン１３の内側には、図示していないが、回転軸に軸受を介して取り付けされた回転子（ロータ）が配置されるが、本実施例では省略してある。   In the present embodiment, the tee score 11 and the coil 14 have 12 slots. Although not shown, a rotor (rotor) attached to the rotating shaft via a bearing is disposed inside the bobbin 13, but is omitted in this embodiment.

ボビン１３は、図２に示すように複数のティースコア１２を個別に覆うように装着され、コイル１４が巻回、巻装される筒状のボビン本体部１３１と、該ボビン本体部１３１のヨークコア側（外径側）の一端部に軸方向に延びた一体形成された板状の鍔部１３２（図４参照）と、該ボビン本体１３１の回転子側（内径側）に軸方向に延びた一体形成された板状の鍔部１３３（図４参照）から構成されている。   As shown in FIG. 2, the bobbin 13 is mounted so as to individually cover the plurality of tea scores 12, and a cylindrical bobbin main body 131 around which the coil 14 is wound and wound, and a yoke core of the bobbin main body 131 An integrally formed plate-like flange 132 (see FIG. 4) extending in the axial direction at one end of the side (outer diameter side), and extending in the axial direction on the rotor side (inner diameter side) of the bobbin body 131 It is comprised from the plate-shaped collar part 133 (refer FIG. 4) formed integrally.

ボビン１３のボビン本体部１３１は、図４に示すように軸方向に延びており、その内部には、ティースコア１２の一部１２１が挿入される貫通孔１３１１が設けられている。また、ボビン本体部１３へのコイル１４の巻装を可能とするため、該ボビン本体部１３１と該ボビン本体の両側の鍔部１３２、１３３により囲まれているコイル巻線空間部６が設けられている。   As shown in FIG. 4, the bobbin main body 131 of the bobbin 13 extends in the axial direction, and a through hole 1311 into which a part 121 of the tea score 12 is inserted is provided. Further, in order to allow the coil 14 to be wound around the bobbin main body 13, a coil winding space 6 surrounded by the bobbin main body 131 and the flanges 132 and 133 on both sides of the bobbin main body is provided. ing.

ボビン１３の鍔部１３２、１３３は、隣り合うボビン１３のボビン本体１３１の端部におけるコイル巻線の端部とティースコア１２内径側の端部１２２間の絶縁（沿面距離Ｌ）や組み立て後の強度確保が可能なように形成されている。   The flanges 132 and 133 of the bobbin 13 are insulated (creeping distance L) between the end of the coil winding at the end of the bobbin main body 131 of the adjacent bobbin 13 and the end 122 on the inner side of the tee core 12 or after assembly. It is formed to ensure strength.

すなわち、鍔部１３２、１３３は、それぞれ軸方向に延び、かつ円周方向に延びた板状（突出片）となっており、この突出片とボビン本体部とをもって上記コイル巻線空間部６が構成されるようにボビン本体部１３１よりも軸方向および円周方向に大きく構成されている。   That is, the flanges 132 and 133 each have a plate shape (projecting piece) extending in the axial direction and extending in the circumferential direction, and the coil winding space 6 is formed by the projecting piece and the bobbin main body portion. It is configured to be larger in the axial direction and the circumferential direction than the bobbin main body 131 so as to be configured.

このようにボビン本体部１３１の両端に一体的に形成された鍔部１３２、１３３の形状を軸方向とともに円周方向に延設し、突出ように構成することにより、ボビン本体部１３１に巻回されるコイル巻線１４と、ボビン本体部の貫通孔１３１１に装着されるティースコア１２の内径側の一端部１２２間の沿面距離Ｌ（図３参照）を長く確保することが可能となる。ボビン同士の組合せは後述する。   In this way, the shape of the flanges 132 and 133 formed integrally at both ends of the bobbin main body 131 extends in the circumferential direction along with the axial direction, and is configured to protrude so that the bobbin main body 131 is wound around the bobbin main body 131. It is possible to ensure a long creepage distance L (see FIG. 3) between the coil winding 14 to be formed and the one end 122 on the inner diameter side of the tea score 12 mounted in the through hole 1311 of the bobbin main body. The combination of bobbins will be described later.

また、ボビン１３の外径側の鍔部１３２の時計方向および反時計方向の両端面１３２１、１３２２は、複数のボビン同士を組み立てたとき、例えば図３に示すように隣り合うボビンの鍔部同士の両端面と対向し、かつ密接するように互いに内側に傾斜した傾斜面となっている。   In addition, the clockwise and counterclockwise both end surfaces 1321 and 1322 of the flange 132 on the outer diameter side of the bobbin 13 are formed when a plurality of bobbins are assembled with each other, for example, as shown in FIG. The inclined surfaces are inwardly inclined to face each other and to be in close contact with each other.

ボビン１３の内径側の鍔部１３３は、ボビン本体１３１との接合面に対して多少湾曲Ｒするように周方向に延びた厚みが異なる板状に形成されている。つまり、図示のように反時計方向側の板状には、時計側の板状に対して、段差が付くように形成されている。   The flange 133 on the inner diameter side of the bobbin 13 is formed in a plate shape having different thicknesses extending in the circumferential direction so as to be slightly curved R with respect to the joint surface with the bobbin main body 131. That is, as shown in the figure, the plate shape on the counterclockwise side is formed to have a step with respect to the plate shape on the clock side.

これは、ボビン同士を組み合わせたとき、鍔部１３３の組合せが良好にするとともにこの接合面による沿面距離を確保するためでもある。   This is because when the bobbins are combined with each other, the combination of the flanges 133 is improved and the creepage distance due to the joint surface is secured.

また、その内周面側には、隣り合うボビン同士を組み合わせたとき、例えば図３に示すように両ボビン同士が互いに密接するように嵌合する凹凸部が形成されている。また、これらの凹凸部は、図４に示すように鍔部１３３の内周面に軸方向全面に沿って延びるように形成されている。   Moreover, when the adjacent bobbins are combined with each other, on the inner peripheral surface side, for example, as shown in FIG. 3, an uneven portion is formed that fits so that both bobbins are in close contact with each other. Moreover, these uneven | corrugated | grooved parts are formed in the inner peripheral surface of the collar part 133 so that it may extend along the whole axial direction as shown in FIG.

すなわち、鍔部１３３の湾曲面Ｒを含む板状の一端部には、隣り合うボビンの鍔部の端部と対向する凹凸部１３３１，１３３２，１３３３が形成され、その一方の凸部（図面上、右側の周方向に配置されるボビンの凸部１３３４）が他方の凹部１３３１に嵌合するように構成されている。   In other words, at one end of the plate-like shape including the curved surface R of the flange 133, concave and convex portions 1331, 1332, and 1333 that face the ends of the flanges of adjacent bobbins are formed, and one of the convex portions (on the drawing) The bobbin convex portion 1334 arranged in the circumferential direction on the right side is configured to fit into the other concave portion 1331.

詳述すれば、鍔部１３３の凸部１３３２、１３３３は、凹部１３３１を囲むように周方向に延びている。該凹部１３３１は、隣り合うボビンと組み合わせたとき、図３に示すように隣り合うボビンの鍔部の一端部に形成された凸部１３３４が嵌合される。   More specifically, the protrusions 1332 and 1333 of the flange 133 extend in the circumferential direction so as to surround the recess 1331. When the concave portion 1331 is combined with an adjacent bobbin, as shown in FIG. 3, a convex portion 1334 formed at one end portion of the flange portion of the adjacent bobbin is fitted.

凸部１３３２は、図示上、隣り合う右側ボビンと組み合わせたとき、図３に示すように隣り合うボビン１３の鍔部１３３の凸部１３３４の上面に重なるように構成されている。またその先端部が隣り合うボビンのボビン本体部１３１の側面に接するほどの長さを有している。   The convex portion 1332 is configured to overlap the upper surface of the convex portion 1334 of the flange 133 of the adjacent bobbin 13 as shown in FIG. 3 when combined with the adjacent right bobbin. Moreover, it has the length which the front-end | tip part touches the side surface of the bobbin main-body part 131 of the adjacent bobbin.

このように形成することで、より沿面距離を大きくすることが可能であるが、重要なことは図４に示すように鍔部１３３の軸方向の全面に亘って凹凸が延びていることである。換言すれば、ボビン本体部全体、つまりボビン本体部１３１の端部だけでなく、中央部を含め、ボビン本体部１３３の両側から全体的に囲むように鍔部１３３を大きく構成した点にある。   By forming in this way, it is possible to increase the creepage distance, but what is important is that the unevenness extends over the entire surface in the axial direction of the flange 133 as shown in FIG. . In other words, not only the entire bobbin main body portion, that is, the end portion of the bobbin main body portion 131 but also the central portion, the flange portion 133 is configured to be entirely surrounded from both sides of the bobbin main body portion 133.

このように鍔部１３３の突出片１３３２、１３３４を、ボビン本体１３３１の端部のみでなく、中央部を含む、軸方向に延びるように構成することにより、図６に示すボビン本体の端部のみに鍔部を形成したボビンを使用した場合のボビン同士の結合部における沿面距離Ｌ’に比べて、その突出片分だけ沿面距離を確保することが可能にできる。ここで、図６の沿面距離Ｌ’は、例えば引用文献２に示す如く、単にボビン本体の端部のみに凹凸結合部を有するボビン形状における場合である。その結果、同じ沿面距離による性能仕様で比較すれば、その距離分だけ、固定子を小型化、軽量化が可能となる。   In this way, by configuring the protruding pieces 1332 and 1334 of the flange 133 so as to extend in the axial direction including not only the end of the bobbin main body 1331 but also the central portion, only the end of the bobbin main body shown in FIG. Compared to the creepage distance L ′ at the joint between the bobbins when the bobbin having the flange portion is used, it is possible to secure the creepage distance by the protruding piece. Here, the creepage distance L ′ in FIG. 6 is a case of a bobbin shape having an uneven coupling portion only at the end of the bobbin main body as shown in, for example, cited document 2. As a result, if performance specifications with the same creepage distance are compared, the stator can be reduced in size and weight by that distance.

凸部１３３３は、隣り合うボビンの鍔部の凸部１３３４の下側の位置で重なるように構成されている。また、隣り合うボビンの鍔部の側面に接し、かつ凸部１３３２よりも短い長さを有している。   The convex portion 1333 is configured to overlap at a position below the convex portion 1334 of the flange portion of the adjacent bobbin. Further, it has a length that is in contact with the side surface of the flange portion of the adjacent bobbin and shorter than the convex portion 1332.

鍔部１３３の他端部には、前記凸部１３３４が形成されているが、該凸部はボビン本体部１３１の端面位置より一段下がった位置に周方向に延びるように形成されている。   The convex portion 1334 is formed at the other end of the flange portion 133, and the convex portion is formed to extend in the circumferential direction to a position that is one step lower than the end surface position of the bobbin main body portion 131.

すなわち、ボビン１３の鍔部１３３の一方の端部（図２の右側）には、隣り合うボビンの鍔部の凸部１３３４が嵌合される凹部１３３１および該嵌合される凸部１３３４を上下より挟み込むように長さの異なる２つの凸部１３３２、１３３３が形成されている。   That is, at one end of the flange 133 of the bobbin 13 (on the right side in FIG. 2), the concave portion 1331 into which the convex portion 1334 of the adjacent bobbin's flange is fitted and the convex portion 1334 to be fitted up and down. Two convex portions 1332 and 1333 having different lengths are formed so as to be more sandwiched.

また、ボビン１３の鍔部１３３の他方の端部（図２の左側）には、隣り合うボビンの鍔部の凹部１３３１に嵌合される凸部１３３４および段差部１３３５、１３３６が形成されている。   Further, a convex portion 1334 and step portions 1335 and 1336 that are fitted into the concave portion 1331 of the flange portion of the adjacent bobbin are formed on the other end portion (left side in FIG. 2) of the flange portion 133 of the bobbin 13. .

要するに、鍔部１３３の両端部は、隣り合うボビン同士を組み合わせたとき、図３に示すように上下方向に重なり、かつ該両端部の両面が互いに密接するように組合せ可能な凹凸形状に形成されている。鍔部１３３の凹凸の各厚みは、それぞれ０．３ｍｍ程度に構成してある。鍔部１３３の周方向に延びた突出片の長さは１〜２ｍｍ程度に構成してある。   In short, both end portions of the flange portion 133 are formed in a concavo-convex shape that can be combined such that when adjacent bobbins are combined, they overlap in the vertical direction as shown in FIG. ing. Each thickness of the unevenness of the collar portion 133 is configured to be about 0.3 mm. The length of the protruding piece extending in the circumferential direction of the flange 133 is configured to be about 1 to 2 mm.

次に、ボビン等の組み立てについて図４、図５を参照して説明する。まず、ボビン１３のボビン本体部１３１にコイルを必要な回数巻き付ける。   Next, assembly of the bobbin and the like will be described with reference to FIGS. First, the coil is wound around the bobbin main body 131 of the bobbin 13 as many times as necessary.

その後、ボビン本体部１３１の貫通孔１３１１にＴ字状のティースコア１２の一部１２１を挿入する。図５にその状態を示してある。   Thereafter, a part 121 of the T-shaped tea score 12 is inserted into the through hole 1311 of the bobbin main body 131. FIG. 5 shows the state.

しかるのち、ボビン１３の外径側面に突き出したティースコア１２の一部１２１の先端部を図５に示す位置からヨークコア１１に形成された軸方向に延設された凹部１１１に図面の上側から軸方向に沿って差し込むようにして順次装着する。   After that, the tip portion of the part 121 of the tea score 12 protruding from the outer diameter side surface of the bobbin 13 is inserted into the recessed portion 111 formed in the yoke core 11 from the position shown in FIG. Put them in sequence as you insert them along the direction.

このとき、隣り合うボビン同士の鍔部１３３の一方の凸部１３３５が他方の凹部１３３４の一端面から他端面側に滑るようにスライドし、その結果として、鍔部１３３の一端面側の凹凸部１３３１−１３３３と他端面側の凹凸部１３３４−１３３６が嵌り合い、図３に示すような状態で結合される。   At this time, one convex portion 1335 of the flange portion 133 between the adjacent bobbins slides so as to slide from one end surface of the other concave portion 1334 to the other end surface side, and as a result, an uneven portion on one end surface side of the flange portion 133. 1331-133 and the uneven | corrugated | grooved part 1334-1336 of the other end surface side fit, and it couple | bonds in the state as shown in FIG.

ここで、ティースコア１２とコイル巻線（励磁巻線）１４の各部は、ティースコア１２に装着されるボビン１３により、互いに絶縁される。このときに、コイル１４の巻回によるコイル巻線部１４からコイル巻線空間６およびコイル表面伝いにティースコア１２に至るまでの距離の内の最短の距離Ｌが沿面距離最小値として絶縁性能が決まる。   Here, each part of the tee score 12 and the coil winding (excitation winding) 14 is insulated from each other by a bobbin 13 attached to the tee score 12. At this time, the shortest distance L of the distance from the coil winding portion 14 due to the winding of the coil 14 to the tee score 12 along the coil winding space 6 and the coil surface is the creepage distance minimum value, and the insulation performance is Determined.

以上述べた本実施例では、そのコイル巻線表面伝いに至る表面経路において、ボビン１３の鍔部１３３の端部に設けた凹凸部の嵌合部が存在している。この凹凸部の嵌合により、かつボビンの一方の２つの凸をもって、隣り合うボビンの他方の凸を挟み込み、かつ覆うように重さなり、その表面経路が増す構成としていることから、沿面距離を長く確保することが可能となり、その結果として安全上および動作上、必要とされる沿面距離の規定値を満たすことができ、小型化が可能となる。   In the present embodiment described above, there is a fitting portion of the concavo-convex portion provided at the end of the flange portion 133 of the bobbin 13 in the surface path leading to the coil winding surface. Because of the fitting of the concavo-convex part and with one two protrusions of the bobbin, the other protrusion of the adjacent bobbin is sandwiched and covered so that the surface path is increased. As a result, it is possible to satisfy the prescribed value of the creepage distance required for safety and operation, and miniaturization is possible.

換言すれば、本実施例で言えば、鍔部１３３の上述した形状をもって、互いに隣り合うボビンの一方のボビン本体１３１と鍔部１３３の凸部１３３２の付け根部分から該凸部の表面、他方のボビンのボビン本体１３１の鍔部１３３、該他方のボビンの鍔部の凸部１３３４、さらに一方のボビンの鍔部１３３の凸部１３３３に亘る距離が、沿面距離Ｌとなるように構成し、その沿面距離を長く確保することが可能であることから、従来と同一条件の性能で対比すれば、その沿面距離を大きく確保できる分だけ、モータの小型化にも対応可能となる。   In other words, in the present embodiment, with the above-described shape of the flange 133, the bobbin body 131 of the adjacent bobbin and the base portion of the protrusion 1332 of the flange 133 are connected to the surface of the protrusion, the other The distance between the flange 133 of the bobbin main body 131 of the bobbin, the protrusion 1334 of the flange of the other bobbin, and the protrusion 1333 of the flange 133 of the one bobbin is the creepage distance L. Since it is possible to ensure a long creepage distance, it is possible to cope with downsizing of the motor as much as the creepage distance can be secured if compared with the performance under the same conditions as the conventional one.

なお、本実施例では、対向する鍔部同士に設けた凹凸部によって嵌合する例が説明されているが、嵌合そのものが必要なわけではなく、ボビンの個数で全周３６０度を除した１ボビンあたりの割当角度を超える範囲までボビンの鍔部が延伸していることによって、対向するボビンの鍔部が半径方向に重なりを有していれば、その沿面距離を大きく確保できるので、同じ効果が得られる。   In the present embodiment, an example of fitting by the concave and convex portions provided between the opposite flange portions is described, but the fitting itself is not necessary, and 360 degrees of the entire circumference is divided by the number of bobbins. Since the bobbin ridge extends to a range exceeding the assigned angle per bobbin, if the ridges of the opposing bobbin overlap in the radial direction, the creepage distance can be largely secured, so the same An effect is obtained.

また、この重なりを形成する部分の絶縁物の肉厚であるが、仮にテーパがついた場合、素材特性ごとに定まる必要最小肉厚を切る部分は、絶縁物が存在するとは判定されなくなる。このため、本発明に限っていえば、絶縁物の端部にはテーパがつかないように形状を成形しなければならない。   In addition, the thickness of the insulator in the portion where the overlap is formed, but if a taper is provided, it is not determined that the insulator is present in a portion that cuts the necessary minimum thickness determined for each material characteristic. For this reason, if it is limited to this invention, you have to shape | mold a shape so that the edge part of an insulator may not taper.

上述した固定子構造を持つ永久磁石式回転電機に適用可能である。   The present invention can be applied to the permanent magnet type rotating electric machine having the stator structure described above.

１ 電動機の固定子
１１ ヨークコア（ヨーク鉄心）
１２ ティースコア
１３ 絶縁ボビン
１３１ ボビン本体部
１３２、１３３ 鍔部
１４ コイル（コイル巻線部）

1 Stator of motor 11 Yoke core (Yoke iron core)
12 Tea Score 13 Insulating Bobbin 131 Bobbin Main Body 132, 133 Hook 14 Coil (Coil Winding)

Claims (5)

電動機の固定子において、分割された複数のティースコアと、該ティースコアの先端部が挿入される複数の凹部を内周面にかつ軸方向に形成したヨークコアと、コイルが巻装される絶縁材からなる複数のボビンとを備え、
前記ボビンは、前記コイルが巻装され、前記ティースコアが装着される貫通孔を有するボビン本体部と、該ボビン本体部の外径側の端部に形成された鍔部と、該ボビン本体部の内径側の端部に形成された鍔部を含み、
前記内径側端部の鍔部は、前記ボビンを前記ヨークコアに装着し、隣り合うボビン同士を組み立てたとき、嵌合する凹凸部が形成された内側面を有し、周方向に延び、かつ軸方向に延びた板状の突出片を形成し、
前記突出片は、
前記内径側端部の鍔部の一方の端部内側面に、隣り合うボビンの鍔部の凸部が嵌合される凹部を形成し、
他方の端部内側面に、隣り合うボビンの鍔部の凹部に嵌合される凸部を形成するものであり、
隣り合うボビン同士を組み合わせたとき、
前記隣り合うボビンの鍔部の一方の端部側の凹部に隣り合うボビンの他方の端部側の凸部が装着されて両端部側の両面が互いに接し、
前記隣り合うボビンの鍔部の一方の端部側の凸部が隣り合うボビンの一方の端部側の凹部に装着されて両端部側の両面が互いに接し、
前記突出片の凹凸部をもって、前記コイルと前記ティースコア間の沿面距離を長く確保可能な構成としたことを特徴とする電動機の固定子。 In a stator of an electric motor, a plurality of divided tee scores, a yoke core in which a plurality of recesses into which tip portions of the tee scores are inserted are formed on the inner peripheral surface in an axial direction, and an insulating material on which a coil is wound A plurality of bobbins consisting of
The bobbin includes a bobbin main body having a through-hole in which the coil is wound and the teascore is mounted, a flange formed at an outer diameter side end of the bobbin main body, and the bobbin main body Including a collar portion formed at an end on the inner diameter side of
The flange portion at the inner diameter side end portion has an inner surface on which an uneven portion to be fitted is formed when the bobbin is mounted on the yoke core and the adjacent bobbins are assembled with each other, and extends in the circumferential direction. Form a plate-like protruding piece extending in the direction,
The protruding piece is
On the inner surface of one end portion of the flange portion of the inner diameter side end portion, a recess is formed in which the protrusion portion of the flange portion of the adjacent bobbin is fitted,
On the inner surface of the other end, a convex portion that is fitted into the concave portion of the flange portion of the adjacent bobbin is formed.
When adjacent bobbins are combined,
A convex portion on the other end side of the adjacent bobbin is attached to a concave portion on one end side of the flange portion of the adjacent bobbin, and both surfaces on both end sides are in contact with each other,
A convex portion on one end side of the flange portion of the adjacent bobbin is attached to a concave portion on one end side of the adjacent bobbin, and both surfaces on both end sides are in contact with each other,
Wherein with the uneven portion of the projecting piece, the stator of the motor, characterized in that the creepage distance longer can be secured configuration between said coil and the teeth cores. 請求項１に記載された前記電動機の固定子を搭載した永久磁石式回転電機。   A permanent magnet type rotating electrical machine equipped with the stator of the electric motor according to claim 1. 電動機の固定子において、分割された複数のティースコアと、該ティースコアの先端部が挿入される複数の凹部を内周面にかつ軸方向に形成したヨークコアと、コイルが巻装される絶縁材からなる複数のボビンとを備え、
前記ボビンは、前記コイルが巻装され、前記ティースコアが装着される貫通孔を有するボビン本体部と、該ボビン本体部の外径側の端部に形成された鍔部と、該ボビン本体部の内径側の端部に形成された鍔部を含み、
前記ボビン本体部の内径側の端部に形成された鍔部の一方の端部内側面には、隣り合うボビンの鍔部の凸部が嵌合される凹部を形成し、
前記内径側端部の鍔部の他方の端部内側面には、隣り合うボビンの鍔部の凹部に嵌合される凸部を形成し、
隣り合うボビン同士を組み合わせたとき、
前記隣り合うボビンの鍔部の一方の端部側の凹部に隣り合うボビンの他方の端部側の凸部が装着されて両端部側の両面が互いに接し、
前記隣り合うボビンの鍔部の一方の端部側の凸部が隣り合うボビンの一方の端部側の凹部に装着されて両端部側の両面が互いに接し、
前記内径側端部の鍔部は、該ボビンの個数で全周３６０度を除した角度を超える範囲まで延伸していることを特徴とする電動機の固定子。 In a stator of an electric motor, a plurality of divided tee scores, a yoke core in which a plurality of recesses into which tip portions of the tee scores are inserted are formed on the inner peripheral surface in an axial direction, and an insulating material on which a coil is wound A plurality of bobbins consisting of
The bobbin includes a bobbin main body having a through-hole in which the coil is wound and the teascore is mounted, a flange formed at an outer diameter side end of the bobbin main body, and the bobbin main body Including a collar portion formed at an end on the inner diameter side of
On the inner surface of one end portion of the flange portion formed at the inner diameter side end portion of the bobbin main body portion, a recess is formed in which the protrusion portion of the adjacent bobbin flange portion is fitted.
On the inner surface of the other end portion of the flange portion of the inner diameter side end portion, a convex portion that fits into the recess portion of the flange portion of the adjacent bobbin is formed,
When adjacent bobbins are combined,
A convex portion on the other end side of the adjacent bobbin is attached to a concave portion on one end side of the flange portion of the adjacent bobbin, and both surfaces on both end sides are in contact with each other,
A convex portion on one end side of the flange portion of the adjacent bobbin is attached to a concave portion on one end side of the adjacent bobbin, and both surfaces on both end sides are in contact with each other,
The stator of the electric motor, wherein the flange portion at the inner diameter side end extends to a range exceeding the angle obtained by dividing the entire circumference by 360 degrees by the number of the bobbins. 電動機の固定子において、分割された複数のティースコアと、該ティースコアの先端部が挿入される複数の凹部を内周面にかつ軸方向に形成したヨークコアと、コイルが巻装される絶縁材からなる複数のボビンとを備え、
前記ボビンは、前記コイルが巻装され、前記ティースコアが装着される貫通孔を有するボビン本体部と、該ボビン本体部の外径側の端部に形成された鍔部と、該ボビン本体部の内径側の端部に形成された鍔部を含み、
前記ボビン本体部の内径側の端部に形成された鍔部の一方の端部内側面には、隣り合うボビンの鍔部の凸部が嵌合される凹部が形成され、
前記内径側端部の鍔部の他方の端部内側面には、隣り合うボビンの鍔部の凹部に嵌合される凸部が形成され、
隣り合うボビン同士を組み合わせたとき、
前記隣り合うボビンの鍔部の一方の端部側の凹部に隣り合うボビンの他方の端部側の凸部が装着されて両端部側の両面が互いに接し、
前記隣り合うボビンの鍔部の一方の端部側の凸部が隣り合うボビンの一方の端部側の凹部に装着されて両端部側の両面が互いに接し、
前記外径側端部の鍔部は、該ボビンの個数で全周３６０度を除した角度を超える範囲まで延伸していることを特徴とする電動機の固定子。 In a stator of an electric motor, a plurality of divided tee scores, a yoke core in which a plurality of recesses into which tip portions of the tee scores are inserted are formed on the inner peripheral surface in an axial direction, and an insulating material on which a coil is wound A plurality of bobbins consisting of
The bobbin includes a bobbin main body having a through-hole in which the coil is wound and the teascore is mounted, a flange formed at an outer diameter side end of the bobbin main body, and the bobbin main body Including a collar portion formed at an end on the inner diameter side of
On one inner surface of one end portion of the flange portion formed at the inner diameter side end portion of the bobbin main body portion, a recess is formed in which the protrusion portion of the adjacent bobbin flange portion is fitted,
On the inner surface of the other end portion of the flange portion of the inner diameter side end portion, a convex portion that is fitted into the recess portion of the flange portion of the adjacent bobbin is formed,
When adjacent bobbins are combined,
A convex portion on the other end side of the adjacent bobbin is attached to a concave portion on one end side of the flange portion of the adjacent bobbin, and both surfaces on both end sides are in contact with each other,
A convex portion on one end side of the flange portion of the adjacent bobbin is attached to a concave portion on one end side of the adjacent bobbin, and both surfaces on both end sides are in contact with each other,
The stator of the electric motor, wherein the flange portion at the outer diameter side end extends to a range exceeding an angle obtained by dividing the entire circumference by 360 degrees by the number of the bobbins. 電動機の固定子において、分割された複数のティースコアと、該ティースコアの先端部が挿入される複数の凹部を内周面にかつ軸方向に形成したヨークコアと、コイルが巻装される絶縁材からなる複数のボビンとを備え、
前記ボビンは、前記コイルが巻装され、前記ティースコアが装着される貫通孔を有するボビン本体部と、該ボビン本体部の外径側の端部に形成された鍔部と、該ボビン本体部の内径側の端部に形成された鍔部を含み、
前記ボビン本体部の内径側の端部に形成された鍔部の一方の端部内側面には、隣り合うボビンの鍔部の凸部が嵌合される凹部が形成され、
前記内径側端部の鍔部の他方の端部内側面には、隣り合うボビンの鍔部の凹部に嵌合される凸部が形成され、
隣り合うボビン同士を組み合わせたとき、
前記隣り合うボビンの鍔部の一方の端部側の凹部に隣り合うボビンの他方の端部側の凸部が装着されて両端部側の両面が互いに接し、
前記隣り合うボビンの鍔部の一方の端部側の凸部が隣り合うボビンの一方の端部側の凹部に装着されて両端部側の両面が互いに接し、
前記内径側端部及び外径側の端部の鍔部は、その先端部においても肉厚寸法が減少しない形状をもつことを特徴とする電動機の固定子。
In a stator of an electric motor, a plurality of divided tee scores, a yoke core in which a plurality of recesses into which tip portions of the tee scores are inserted are formed on the inner peripheral surface in an axial direction, and an insulating material on which a coil is wound A plurality of bobbins consisting of
The bobbin includes a bobbin main body having a through-hole in which the coil is wound and the teascore is mounted, a flange formed at an outer diameter side end of the bobbin main body, and the bobbin main body Including a collar portion formed at an end on the inner diameter side of
On one inner surface of one end portion of the flange portion formed at the inner diameter side end portion of the bobbin main body portion, a recess is formed in which the protrusion portion of the adjacent bobbin flange portion is fitted,
On the inner surface of the other end portion of the flange portion of the inner diameter side end portion, a convex portion that is fitted into the recess portion of the flange portion of the adjacent bobbin is formed,
When adjacent bobbins are combined,
A convex portion on the other end side of the adjacent bobbin is attached to a concave portion on one end side of the flange portion of the adjacent bobbin, and both surfaces on both end sides are in contact with each other,
A convex portion on one end side of the flange portion of the adjacent bobbin is attached to a concave portion on one end side of the adjacent bobbin, and both surfaces on both end sides are in contact with each other,
The stator of the electric motor, wherein the flange portion of the inner diameter side end portion and the outer diameter side end portion has a shape in which the thickness dimension does not decrease even at the tip end portion.
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