JP2006050680A

JP2006050680A - Armature for motor

Info

Publication number: JP2006050680A
Application number: JP2004204715A
Authority: JP
Inventors: Hidetoshi Ashikawa; 英稔芦川
Original assignee: Kokusan Denki Co Ltd
Current assignee: Mahle Electric Drive Systems Co Ltd
Priority date: 2004-07-08
Filing date: 2004-07-12
Publication date: 2006-02-16

Abstract

<P>PROBLEM TO BE SOLVED: To provide an armature for motor which can easily perform the connection of a coil molded of a rigid line material capable of reducing cogging torque and preventing the slippage between tooth blocks and maintaining the form of the coil singly. <P>SOLUTION: Each tooth 4<SB>1</SB>-4<SB>12</SB>with its inner side coupled with the next by a junction 3<SB>1</SB>-3<SB>12</SB>is divided at each junction 3<SB>2</SB>, 3<SB>6</SB>and 3<SB>10</SB>, with plural adjacent teeth as a unit, thereby being constituted as a plurality of tooth units 4A, 4B, and 4C. Armature coils 6<SB>1</SB>-6<SB>12</SB>, which are independent and can maintain their form singly, are fitted in each tooth 4<SB>1</SB>-4<SB>12</SB>. Two pieces of armature coils of the same phase are connected in series by rigid coupling members 9<SB>1</SB>, 9<SB>2</SB>and 9<SB>3</SB>which can maintain their form singly. Armature coils of each phase arranged in circumferential direction are connected in series by rigid coupling members 8<SB>1</SB>and 8<SB>4</SB>, 8<SB>2</SB>and 8<SB>5</SB>, and 8<SB>3</SB>and 8<SB>6</SB>which can maintain their form singly. Each armature coil of U phase, V phase, and W phase is star-connected with the next by rigid coupling members 10<SB>1</SB>and 10<SB>2</SB>which can maintain their form singly. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、例えばブラシレス電動機等に用いる電機子に関し、更に特定すると電機子鉄心が環状の継鉄部と複数の歯部とに分割されて構成されていて、各歯部にコイルが巻装されている電動機用電機子に関するものである。 The present invention relates to an armature used for, for example, a brushless motor, and more specifically, an armature core is divided into an annular yoke portion and a plurality of tooth portions, and a coil is wound around each tooth portion. The present invention relates to a motor armature.

ブラシレス電動機等において、バッテリー電圧等の比較的低い電圧で大きい電流を流しながら高い出力を得たい場合には、コイルの抵抗値を低く設定し、損失（銅損）を減らさなければならない。銅損を減らすためには、コイルの抵抗値を減らすことが有効である。 In a brushless motor or the like, in order to obtain a high output while flowing a large current at a relatively low voltage such as a battery voltage, the resistance value of the coil must be set low to reduce the loss (copper loss). In order to reduce copper loss, it is effective to reduce the resistance value of the coil.

一つの例として、ブラシレス電動機の銅損を減らし、高い出力の電動機を得るために、コイルの線径がφ３．２ｍｍ必要な場合がある。φ３．２ｍｍの線径は、断面積が８．０４ｍｍ^２である。これは、φ１．６ｍｍの線径のコイルを４本並列接続した断面積と同じになる。断面積が同じで、線長が同じであれば、抵抗値はほぼ一緒になる。 As one example, in order to reduce the copper loss of a brushless motor and obtain a high output motor, the coil wire diameter may be φ3.2 mm. The diameter of φ3.2 mm has a cross-sectional area of 8.04 mm ² . This is the same as a cross-sectional area in which four coils having a wire diameter of φ1.6 mm are connected in parallel. If the cross-sectional area is the same and the line length is the same, the resistance values are almost the same.

コイルの線径がφ３．２ｍｍ必要な場合、通常は作業性の良さから線径の細い銅線を何本か並列に巻線するが、それが有効でない場合もある。例えば、電機子鉄心のスロット開口長が０．５ｍｍと細い銅線が通らない位に狭い場合は、線径が細い銅線の並列巻回は有効ではない。 When the wire diameter of the coil is required to be 3.2 mm, usually several copper wires having a thin wire diameter are wound in parallel for good workability, but this may not be effective. For example, when the slot opening length of the armature core is as narrow as 0.5 mm so that a thin copper wire cannot pass, parallel winding of copper wires having a thin wire diameter is not effective.

このような場合は、電機子鉄心を環状の継鉄部（バックコア）と複数の歯部（ティースコア）とに分割することで問題を解決できる（例えば、特許文献１参照。）。 In such a case, the problem can be solved by dividing the armature core into an annular yoke portion (back core) and a plurality of tooth portions (tea scores) (see, for example, Patent Document 1).

しかし、この場合には、歯部の一つ一つがばらばらになってしまうことで、電機子鉄心の内径の真円度が悪くなり、電動機のコギングトルク等に悪影響を及ぼしてしまう問題点がある。 However, in this case, since each tooth portion is separated, the roundness of the inner diameter of the armature core is deteriorated, and there is a problem in that the cogging torque of the motor is adversely affected. .

これを改善するために、歯部内周のスロット開口を、性能を落とさない程度（例、１００枚中４枚）に、周方向に連結部で連結してつなげることが検討されている。これにより電機子鉄心の内径の真円度が悪化するのを防ぐことができる。 In order to improve this, it has been studied to connect and connect the slot openings on the inner periphery of the tooth portion by connecting portions in the circumferential direction to such an extent that performance is not deteriorated (for example, 4 out of 100). This can prevent the roundness of the inner diameter of the armature core from deteriorating.

さらに、歩留まり等を考慮に入れて、内周側を連結部で連結した各歯部を、真円度が悪くならない程度に、周方向に複数の歯部ブロックに連結部で分割することが検討されている。
特開２００２−１４２３９１号公報 Furthermore, considering the yield, etc., consider dividing each tooth part connected on the inner circumference side with a connecting part into a plurality of tooth part blocks in the circumferential direction so that the roundness does not deteriorate Has been.
JP 2002-142391 A

しかしながら、複数の歯部ブロックを円形に配置して各歯部にコイルの巻線をすると、巻線する時の引張り力（テンション）によって隣接する歯部ブロック間がずれてしまう問題点が発生する。 However, if a plurality of tooth blocks are arranged in a circle and a coil is wound around each tooth, there is a problem in that adjacent tooth blocks are displaced due to the tensile force (tension) at the time of winding. .

このようなことを考慮すると、予めコイル状に成形した銅線を歯部に嵌め付ける方が、歯部の変形を防ぐことができる。この場合、φ１．６ｍｍの線径の銅線でコイルを成形しておくと、この線径の銅線では柔軟性があってコイルの形状維持ができず、コイル形状が崩れてしまうので使用できない。 Considering this, it is possible to prevent deformation of the tooth part by fitting a copper wire previously formed into a coil shape to the tooth part. In this case, if the coil is formed with a copper wire having a diameter of φ1.6 mm, the copper wire with this wire diameter is flexible and cannot maintain the shape of the coil, and the coil shape collapses and cannot be used. .

なお、φ１．６ｍｍの線径のコイルを４本並列巻きして並列接続すると、電動機にブレーキをかけるような循環電流が発生し、効率を下げる原因になるので好ましくない。 If four coils with a diameter of φ1.6 mm are wound in parallel and connected in parallel, a circulating current that brakes the electric motor is generated, which is not preferable.

本発明の目的は、コギングトルクを低減でき、歯部ブロック間のずれを防止でき、単独でコイル形状の維持ができる剛性の線材による成形コイルの接続も容易に行える電動機用電機子を提供することにある。 An object of the present invention is to provide an armature for an electric motor that can reduce cogging torque, prevent displacement between tooth blocks, and can easily connect a formed coil with a rigid wire that can maintain the coil shape independently. It is in.

本発明は、環状に形成された継鉄部と、前記継鉄部にその周方向に等角度間隔で接続され且つ内周に位置する隣接先端の相互間が連結部で連結された１２本の歯部とで構成された電機子鉄心と、前記各歯部に巻装されたＵ相、Ｖ相、Ｗ相の各電機子コイルとを備えた電動機用電機子を対象とする。 The present invention includes a yoke portion formed in an annular shape, and twelve pieces connected to the yoke portion at equal angular intervals in the circumferential direction and connected between adjacent tips located on the inner periphery by a connecting portion. An armature for a motor including an armature core composed of tooth portions and U-phase, V-phase, and W-phase armature coils wound around the respective tooth portions is an object.

本発明に係る電動機用電機子では、
内周側が前記連結部で連結された前記各歯部は隣接する複数の該歯部を単位として前記連結部で分割されて複数の歯部ユニットとして構成され、
前記各歯部には独立していて単独で形状維持ができる成形された前記電機子コイルが嵌め込まれており、
周方向に隣接して配置されている同相の２個の前記各電機子コイルは単独で形状維持ができる剛性を有する連結部材で直列接続され、
周方向に離れて配置されている各相の前記電機子コイルは単独で形状維持ができる剛性を有する連結部材で直列接続され、
Ｕ相、Ｖ相、Ｗ相の前記各電機子コイルは単独で形状維持ができる剛性を有する連結部材でスター結線されていることを特徴とする。 In the armature for an electric motor according to the present invention,
Each tooth part whose inner peripheral side is connected by the connecting part is divided as a unit by a plurality of adjacent tooth parts and is configured as a plurality of tooth part units.
Each tooth part is fitted with the molded armature coil that is independent and can maintain the shape independently,
The two in-phase armature coils arranged adjacent to each other in the circumferential direction are connected in series with a connecting member having rigidity capable of maintaining the shape independently,
The armature coils of the respective phases arranged apart in the circumferential direction are connected in series with a connecting member having rigidity capable of maintaining the shape independently,
Each of the U-phase, V-phase, and W-phase armature coils is star-connected by a connecting member having rigidity capable of maintaining the shape independently.

この場合、前記電機子コイルと前記連結部材との各接続部は、電機子中心からみて径方向に重ならずに配置されていることが好ましい。 In this case, it is preferable that each connection portion between the armature coil and the connecting member is disposed without overlapping in the radial direction when viewed from the center of the armature.

また前記継鉄部は、周方向に等間隔で複数に分割された複数の継鉄部分割ユニットにより形成されていることが好ましい。 Moreover, it is preferable that the said yoke part is formed of the several yoke part division | segmentation unit divided | segmented into plurality at equal intervals in the circumferential direction.

本発明の電動機用電機子では、継鉄部とは別体で、隣接する複数の歯部の内周側が連結部で接続した歯部ユニットを用いているので、電機子鉄心の内径の真円度を向上させることができ、コギングトルクを低減することができる。また、各電機子コイルとしては、独立していて単独で形状維持ができる成形された成形コイルを用いているので、コイル形状の維持ができ、各歯部に後から嵌めて組み立てることができる。また、周方向に離れて配置されている各相の電機子コイルは単独で形状維持ができる剛性を有する連結部材で直列接続し、且つＵ相、Ｖ相、Ｗ相の各電機子コイルは単独で形状維持ができる剛性を有する連結部材でスター結線しているので、剛性のあるコイルの相互接続も容易に行うことができる。 In the armature for an electric motor of the present invention, since the tooth unit is used as a separate unit from the yoke part and the inner peripheral side of a plurality of adjacent tooth parts is connected by a connecting part, the perfect circle of the inner diameter of the armature core is used. The cogging torque can be reduced. Further, as each armature coil, a molded coil that is independent and can maintain the shape independently is used. Therefore, the coil shape can be maintained, and can be assembled by being fitted to each tooth portion later. In addition, the armature coils of each phase that are arranged apart from each other in the circumferential direction are connected in series with a rigid connecting member that can maintain the shape independently, and each of the U-phase, V-phase, and W-phase armature coils is independent. Since the star connection is made with a rigid connecting member that can maintain the shape, the rigid coils can be easily interconnected.

また、周方向に所定の分布で配置されていて単独で形状維持ができる各相の電機子コイルは、１つの相を隣接する２個のコイルで構成し、これら２個のコイルを連結部材で直列接続しているので、線材が太くて１つのコイルのターン数を多く巻けなくても、これらコイルのグループで所要のターン数を得ることができる。 Further, the armature coils of each phase that are arranged in a predetermined distribution in the circumferential direction and can maintain the shape independently are composed of two adjacent coils in one phase, and these two coils are connected members. Since the wires are connected in series, the required number of turns can be obtained in a group of these coils even if the wire is thick and the number of turns of one coil cannot be increased.

さらに、各電機子コイルは、同じ少ないターン数で構成されているので、太く剛性が大きい線材でのコイルの形成を能率良く、短時間で行うことができる。 Further, since each armature coil is configured with the same small number of turns, the coil can be formed efficiently and in a short time with a thick wire having high rigidity.

電機子コイルと連結部材との各接続部を、電機子中心からみて径方向に重ならずに配置すると、これら接続部のヒュージング溶接を容易に行うことができる。 If the connecting portions of the armature coil and the connecting member are arranged without overlapping in the radial direction when viewed from the center of the armature, fusing welding of these connecting portions can be easily performed.

また継鉄部を、周方向に等間隔で複数に分割された複数の継鉄部分割ユニットにより形成すると、同じ継鉄部分割ユニットを複数用いて継鉄部を構成することができる。 Moreover, if a yoke part is formed by the several yoke part division | segmentation unit divided | segmented into plurality by equal intervals in the circumferential direction, a yoke part can be comprised using the same yoke part division | segmentation unit.

以下、本発明の電動機用電機子を実施するための最良の形態の一例を、図１（Ａ）（Ｂ）乃至図１０を参照して詳細に説明する。ここで、図１（Ａ）（Ｂ）は本例の電動機用電機子の下段部と上段部との接続関係を示す平面図、図２は本例の電動機用電機子の配線図、図３（Ａ）（Ｂ）は本例で用いるコイル間連結部材の平面図及び正面図、図４（Ａ）（Ｂ）は本例で用いるＵ相渡り結部材の平面図及び正面図、図５（Ａ）（Ｂ）は本例で用いるＶ相渡り結部材の平面図及び正面図、図６（Ａ）（Ｂ）は本例で用いるＷ相渡り結部材の平面図及び正面図、図７（Ａ）（Ｂ）は本例で用いる短尺コモン連結部材の平面図及び側面図、図８（Ａ）（Ｂ）は本例で用いる長尺コモン連結部材の平面図及び側面図、図９は本例で用いる各連結部材の配置関係を示す斜視図、図１０は図９の下部を樹脂モールドした斜視図、図１１は本例の電動機用電機子の配線図である。 Hereinafter, an example of the best mode for carrying out the armature for an electric motor according to the present invention will be described in detail with reference to FIGS. Here, FIGS. 1A and 1B are plan views showing the connection relationship between the lower and upper stages of the motor armature of this example, FIG. 2 is a wiring diagram of the motor armature of this example, and FIG. FIGS. 4A and 4B are a plan view and a front view of a connecting member between coils used in this example, and FIGS. 4A and 4B are a plan view and a front view of a U-phase connecting member used in this example. FIGS. 6A and 6B are a plan view and a front view of a V-phase connecting member used in this example, and FIGS. 6A and 6B are a plan view and a front view of a W-phase connecting member used in this example. FIGS. 8A and 8B are a plan view and a side view of a short common connecting member used in this example, FIGS. 8A and 8B are a plan view and a side view of a long common connecting member used in this example, and FIG. FIG. 10 is a perspective view in which the lower part of FIG. 9 is resin-molded, and FIG. 11 is a wiring diagram of the armature for an electric motor of this example.

本例の電動機用電機子１は、図１（Ａ）（Ｂ）に示すように、環状に形成された継鉄部２と、該継鉄部２にその周方向に等角度間隔で接続され且つ内周側に位置する隣接先端の相互間が連結部３_１〜３_１２で連結された複数の歯部４_１〜４_１２とで構成された電機子鉄心５と、各歯部４_１〜４_１２に巻装されたＵ相、Ｖ相、Ｗ相の各電機子コイル６_１〜６_１２とを備えた構成になっている。 As shown in FIGS. 1A and 1B, the motor armature 1 of this example is connected to a yoke portion 2 formed in an annular shape and the yoke portion 2 at equal angular intervals in the circumferential direction. and an inner plurality of teeth 41 _to ₁₂ which are connected between each other adjacent the tip at the junction 3 ₁ to 3 ₁₂ positioned on peripheral side and the armature core 5 composed of, each tooth 4 ₁ 4 ₁₂ , U-phase, V-phase, and W-phase armature coils 6 _{1 to} 6 ₁₂ wound around.

継鉄部２は、図１（Ａ）（Ｂ）に示すように、周方向に等間隔で複数（本例では３個）に分割された継鉄部分割ユニット２_１，２_２，２_３により形成されている。隣接する継鉄部分割ユニット２_１，２_２，２_３は、凹部と凸部を嵌め合わせた凹凸連結部７_１，７_２，７_３にて相互に連結され、環状になっている。 As shown in FIGS. 1 (A) and 1 (B), the yoke part 2 is divided into a plurality (three in this example) of the yoke part divided units 2 ₁ , 2 ₂ , 2 ₃ at equal intervals in the circumferential direction. It is formed by. Adjacent yoke part division units 2 ₁ , 2 ₂ , 2 ₃ are connected to each other by concavo-convex connection parts 7 ₁ , 7 ₂ , 7 _{3 in} which concave parts and convex parts are fitted together, and are annular.

このような継鉄部２の内周側には、図１（Ａ）（Ｂ）に示すように、継鉄部２と同材質の各歯部４_１〜４_１２が周方向に等角度間隔で求心方向に向けて配置され、それぞれの基部は継鉄部２の各溝に嵌め込まれて支持されている。各歯部４_１〜４_１２の内周側の各先端は、隣接相互間が各歯部４_１〜４_１２と同材質の連結部３_１〜３_１２で連結されている。 As shown in FIGS. 1 (A) and 1 (B), the tooth portions 4 ₁ to 4 ₁₂ made of the same material as the yoke portion 2 are equiangularly spaced in the circumferential direction on the inner peripheral side of the yoke portion 2. Are arranged in the centripetal direction, and the respective base portions are fitted and supported in the respective grooves of the yoke portion 2. Each distal end of the inner peripheral side of each tooth _{₄₁ to 12,} between adjacent each other are connected by the connecting portion ₃ 1 _{to 3 12} of the same material as each tooth _{₄₁ to 12.}

内周側が連結部３_１〜３_１２で連結された各歯部４_１〜４_１２は、隣接する複数（本例では４本）の歯部４_１１，４_１２，４_１，４_２と、歯部４_３，４_４，４_５，４_６と、歯部４_７，４_８，４_９，４_１０とを単位として、連結部３_２，３_６，３_１０で３分割されて複数の歯部ユニット４Ａ，４Ｂ，４Ｃとして構成されている。 The tooth portions 4 ₁ to 4 ₁₂ whose inner peripheral sides are connected by the connecting portions 3 _{1 to} 3 ₁₂ are a plurality of adjacent (four in this example) tooth portions 4 ₁₁ , 4 ₁₂ , 4 ₁ , 4 ₂ , The tooth portions 4 ₃ , 4 ₄ , 4 ₅ , 4 ₆ and the tooth portions 4 ₇ , 4 ₈ , 4 ₉ , 4 ₁₀ are used as a unit, and are divided into three parts by connecting portions 3 ₂ , 3 ₆ , 3 ₁₀ . It is configured as tooth unit 4A, 4B, 4C.

各歯部４_１〜４_１２には、継鉄部２にこれら歯部４_１〜４_１２を接続する前に、独立していて単独で形状維持ができる成形された電機子コイル６_１〜６_１２が嵌め込まれている。 Before connecting the tooth portions 4 ₁ to 4 ₁₂ to the yoke portion 2, the tooth portions 4 ₁ to 4 ₁₂ are formed with armature coils 6 _{1 to} 6 that are independent and can maintain the shape independently. ₁₂ is fitted.

この例では、各電機子コイル６_１〜６_１２は、単独で形状維持ができる剛性を有する、例えば線径がφ３．２ｍｍの銅線を３ターン巻いてそれぞれ構成されている。 In this example, each of the armature coils 6 _{1 to} 6 ₁₂ is configured by winding a copper wire having a diameter of φ3.2 mm for three turns, for example, having a rigidity capable of maintaining the shape independently.

またこの例では、図１（Ａ）（Ｂ）及び図２に示すように、電機子コイル６_１，６_２がＵ相を構成し、電機子コイル６_３，６_４がＶ相を構成し、電機子コイル６_５，６_６がＷ相を構成し、電機子コイル６_７，６_８がＵ相を構成し、電機子コイル６_９，６_１０がＶ相を構成し、電機子コイル６_１１，６_１２がＷ相を構成している。 In this example, as shown in FIGS. 1A and 1B and FIG. 2, the armature coils 6 ₁ and 6 ₂ constitute a U phase, and the armature coils 6 ₃ and 6 ₄ constitute a V phase. The armature coils 6 ₅ and 6 ₆ constitute the W phase, the armature coils 6 ₇ and 6 ₈ constitute the U phase, the armature coils 6 ₉ and 6 ₁₀ constitute the V phase, and the armature coil 6 ₁₁ , 6 and ₁₂ constitute the W phase.

周方向に隣接して配置されているＵ相，Ｖ相，Ｗ相，Ｕ相，Ｖ相，Ｗ相の同相の各電機子コイル６_１，６_２と、６_３，６_４と、６_５，６_６と、６_７，６_８と、６_９，６_１０と、６_１１，６_１２とは、図１（Ａ）（Ｂ）に示すように、単独で形状維持ができる剛性を有するコイル間連結部材８_１〜８_６で直列接続されている。 The armature coils 6 ₁ , 6 ₂ , 6 ₃ , 6 ₄ , 6 ₅ of the same phase of the U phase, V phase, W phase, U phase, V phase, W phase, which are arranged adjacent to each other in the circumferential direction. , 6 ₆ , 6 ₇ , 6 ₈ , 6 ₉ , 6 ₁₀ , 6 ₁₁ , 6 ₁₂ are coils having rigidity capable of maintaining the shape independently as shown in FIGS. They are connected in series between the connecting member ₈ 1-8 _6.

コイル間連結部材８_１〜８_６は、図３（Ａ）（Ｂ）に示すように、銅板又は銅合金板で成形されて構成されている。これらコイル間連結部材８_１〜８_６は、基板部８ａの両側に円弧状端子部８ｂ，８ｃを立設した構造になっている。円弧状端子部８ｂ，８ｃは、基板部８ａの同じ板面側に円弧状端子部８ｂ，８ｃの凹部を向けた構造になっている。円弧状端子部８ｂ，８ｃの凹部は、同相の各電機子コイル６_１，６_２と、６_３，６_４と、６_５，６_６と、６_７，６_８と、６_９，６_１０と、６_１１，６_１２とを構成している断面円形の線材の端部外周に接触して嵌り、接続される形状になっている。 The inter-coil connecting members 8 ₁ to 8 ₆ are formed of a copper plate or a copper alloy plate, as shown in FIGS. Between the coil connecting member 8 _1-8 ₆ has a structure erected arcuate terminal portion 8b, 8c on both sides of the base plate portion 8a. The arc-shaped terminal portions 8b and 8c have a structure in which the concave portions of the arc-shaped terminal portions 8b and 8c are directed to the same plate surface side of the substrate portion 8a. The concave portions of the arc-shaped terminal portions 8b, 8c are in-phase armature coils 6 ₁ , 6 ₂ , 6 ₃ , 6 ₄ , 6 ₅ , 6 ₆ , 6 ₇ , 6 ₈ , 6 ₉ , 6 _10. If fits in contact with the outer circumference of the end portion of the 6 _11, 6 ₁₂ and circular section of the wire rod constituting the are shaped to be connected.

これらコイル間連結部材８_１〜８_６は、同相の各電機子コイル６_１，６_２と、６_３，６_４と、６_５，６_６と、６_７，６_８と、６_９，６_１０と、６_１１，６_１２を接続する位置に、図１（Ａ）（Ｂ）、図２、図９及び図１０に示すように配置され、同相の各電機子コイル６_１，６_２と、６_３，６_４と、６_５，６_６と、６_７，６_８と、６_９，６_１０と、６_１１，６_１２とを構成している断面円形の線材の電機子求心方向を向いた端部外周に接触されて電気的に接続されている。これらコイル間連結部材８_１〜８_６と、同相の各電機子コイル６_１，６_２と、６_３，６_４と、６_５，６_６と、６_７，６_８と、６_９，６_１０と、６_１１，６_１２との接触部は、例えばヒュージング溶接により電気的に確実に接続されている。 These inter-coil connecting members 8 ₁ to 8 ₆ are in-phase armature coils 6 ₁ , 6 ₂ , 6 ₃ , 6 ₄ , 6 ₅ , 6 ₆ , 6 ₇ , 6 ₈ , 6 ₉ , 6. ₁₀ and 6 ₁₁ , 6 ₁₂ are connected as shown in FIGS. 1A, 1 B, 2, 9, and 10, and in-phase armature coils 6 ₁ , 6 ₂ , , 6 ₃ , 6 ₄ , 6 ₅ , 6 ₆ , 6 ₇ , 6 ₈ , 6 ₉ , 6 ₁₀ , 6 ₁₁ , 6 ₁₂ It is in contact with and electrically connected to the outer periphery of the facing end. The inter-coil connecting members 8 ₁ to 8 ₆ , the armature coils 6 ₁ and 6 ₂ , 6 ₃ and 6 ₄ , 6 ₅ and 6 ₆ , 6 ₇ and 6 ₈ , and 6 ₉ and 6 of the same phase. ₁₀ and 6 ₁₁ , 6 ₁₂ are securely connected electrically by, for example, fusing welding.

周方向に離れて配置されている各相の電機子コイル、即ちＵ相の電機子コイル６_２と６_８、Ｖ層の電機子コイル６_４と６_１０、Ｗ相の電機子コイル６_５と６_１１は、図１（Ａ）（Ｂ）及び図２に示すように、該電機子の遠心方向を向いた端部が、単独で形状維持ができる剛性を有する、例えば断面積が約８．０４ｍｍ^２の銅角棒又は銅合金角棒で構成されたＵ相渡り連結部材９_１と、Ｖ相渡り連結部材９_２と、Ｗ相渡り連結部材９_３で直列接続されている。 The armature coil of each phase which are spaced apart in the circumferential direction, i.e. the armature coil 6 _second U-phase and 6 _8, the V layer armature coils 6 ₄ 6 _10, the armature coils 6 ₅ _W phase 6 _11, as shown in FIG. 1 (a) (B) and FIG. 2, the end facing the centrifugal direction of the electrical machine element has a rigidity that can alone shape retention, for example, the cross-sectional area of about 8. a 04mm copper rectangular bar or a copper alloy rectangular bar U-phase transition coupling member 9 ₁ comprised of ^two, the V-phase transition coupling member 9 _2, are connected in series with W-phase transition coupling member 9 _3.

Ｕ相渡り連結部材９_１は、図４（Ａ）（Ｂ）に示すように、円弧状に湾曲された円弧状部９_１ａと、その両端で円弧の中心軸と平行する方向に曲げられた端子部９_１ｂ，９_１ｃとで構成されている。端子部９_１ｂには、図１（Ａ）に示すように電機子コイル６_２の遠心方向を向いた端部が接触されて電気的に接続されている。端子部９_１ｃには、図１（Ａ）に示すように電機子コイル６_８の遠心方向を向いた端部が接触されて電気的に接続されている。これら端子部９_１ｂと電機子コイル６_２の遠心方向を向いた端部との接触部は、例えばヒュージング溶接により電気的に確実に接続されている。 U-phase transition coupling member 9 _1, as shown in FIG. 4 (A) (B), a curved arc-shaped portion 9 _{1 a} in a circular arc shape, bent in a direction parallel with both ends and the center of the arc axis Terminal portions 9 ₁ b and 9 ₁ c. The terminal portion 9 _{1 b,} are contact ends facing the centrifugal direction of the armature coils 6 ₂ as shown in FIG. 1 (A) are electrically connected. The terminal portion 9 _{1 c,} is contacted the ends facing the centrifugal direction of the armature coil 6 ₈ As shown in FIG. 1 (A) are electrically connected. Contact portion between these terminal portions 9 _{1 b} and the end portion facing the centrifugal direction of the armature coil 6 _2, for example, are reliably electrically connected by fusing welding.

Ｖ相渡り連結部材９_２は、図５（Ａ）（Ｂ）に示すように、円弧状に湾曲された円弧状部９_２ａと、その両端で円弧の中心軸と平行する方向に曲げられた端子部９_２ｂ，９_２ｃとで構成されている。端子部９_２ｂには、図１（Ｂ）に示すように電機子コイル６_１０の遠心方向を向いた端部が接触されて電気的に接続されている。端子部９_２ｃには、図１（Ｂ）に示すように電機子コイル６_４の遠心方向を向いた端部が接触されて電気的に接続されている。これら端子部９_２ｃと電機子コイル６_４の遠心方向を向いた端部との接触部は、例えばヒュージング溶接により電気的に確実に接続されている。 V-phase transition coupling member 9 _2, as shown in FIG. 5 (A) (B), a curved arc-shaped portion 9 _{2 a} in a circular arc shape, bent in a direction parallel with both ends and the center of the arc axis Terminal portions 9 ₂ b and 9 ₂ c. The terminal portion 9 _{2 b,} are contact ends facing the centrifugal direction of the armature coil 6 ₁₀ As shown in FIG. 1 (B) are electrically connected. The terminal portion 9 _{2 c,} is contacted the ends facing the centrifugal direction of the armature coil 6 ₄ As shown in FIG. 1 (B) are electrically connected. Contact portion between the end portion facing the centrifugal direction of the terminal portion 9 _{2 c} and the armature coils 6 _4, for example, is reliably electrically connected by fusing welding.

Ｗ相渡り連結部材９_３は、図６（Ａ）（Ｂ）に示すように、円弧状に湾曲された円弧状部９_３ａと、その両端で円弧の中心軸と平行する方向に曲げられた端子部９_３ｂ，９_３ｃとで構成されている。円弧状部９_３ａの途中には段差部９_３ｄが設けられていて、円弧状部９_３ａが電機子の下段部と上段部とに位置できるようになっている。端子部９_３ｂには、図１（Ｂ）に示すように電機子コイル６_５の遠心方向を向いた端部が接触されて電気的に接続されている。端子部９_３ｃには、図１（Ａ）に示すように電機子コイル６_１１の遠心方向を向いた端部が接触されて電気的に接続されている。これら端子部９_３ｂと電機子コイル６_５の遠心方向を向いた端部との接触部、及び端子部９_３ｃと電機子コイル６_１１の遠心方向を向いた端部との接触部は、例えばヒュージング溶接により電気的に確実に接続されている。 W-phase transition coupling member 9 _3, as shown in FIG. 6 (A) (B), a curved arc-shaped portion 9 _{3 a} in an arc shape, bent in a direction parallel with both ends and the center of the arc axis Terminal portions 9 ₃ b and 9 ₃ c. A step portion 9 ₃ d is provided in the middle of the arc-shaped portion 9 ₃ a so that the arc-shaped portion 9 ₃ a can be positioned at the lower and upper steps of the armature. The terminal portion 9 _{3 b,} are contact ends facing the centrifugal direction of the armature coil 6 ₅ As shown in FIG. 1 (B) are electrically connected. The terminal portion 9 _{3 c,} is contacted the ends facing the centrifugal direction of the armature coils 6 ₁₁ As shown in FIG. 1 (A) are electrically connected. Contact portion between the end portion facing the centrifugal direction of the terminal portions 9 _{3 b} and the armature coils 6 _5, and the contact portion between the end portion facing the centrifugal direction of the terminal portion 9 _{3 c} and the armature coils 6 ₁₁ For example, it is securely connected electrically by fusing welding.

Ｕ相、Ｖ相、Ｗ相の各電機子コイル６_１〜６_１２は、図１（Ａ）（Ｂ）及び図２に示すように、単独で形状維持ができる剛性を有する短尺コモン連結部材１０_１，長尺コモン連結部材１０_２でスター結線されている。これら短尺コモン連結部材１０_１，長尺コモン連結部材１０_２とは、銅板又は銅合金板で成形されて構成されている。 Each of the U-phase, V-phase, and W-phase armature coils 6 _{1 to} 6 ₁₂ has a short common connecting member 10 having rigidity capable of maintaining the shape independently as shown in FIGS. _1, are star-connected a long common connecting member 10 _2. The short common connecting member 10 ₁ and the long common connecting member 10 ₂ are formed of a copper plate or a copper alloy plate.

短尺コモン連結部材１０_１は、図６（Ａ）（Ｂ）に示すように、基板部１０_１ａの両側に円弧状端子部１０_１ｂ，１０_１ｃを立設した構造になっている。円弧状端子部１０_１ｂ，１０_１ｃは、基板部１０_１ａの互いに反対側の板面に円弧状端子部１０_１ｂ，１０_１ｃの凹部を向けた構造になっている。 Short common connecting member 10 _1, as shown in FIG. 6 (A) (B), has an arc-shaped terminal portion ₁₀ 1 b, 10 ₁ c on both sides of the substrate portion 10 ₁ a to the structure erected. The arc-shaped terminal portions 10 ₁ b and 10 ₁ c have a structure in which the concave portions of the arc-shaped terminal portions 10 ₁ b and 10 ₁ c are directed to the opposite plate surfaces of the substrate portion 10 ₁ a.

短尺コモン連結部材１０_１の円弧状端子部１０_１ｂは、図１（Ａ）（Ｂ）に示すように、電機子コイル６_６の遠心方向を向いた端部に接触されて電気的に接続されている。短尺コモン連結部材１０_１の円弧状端子部１０_１ｃ、図１（Ａ）（Ｂ）に示すように、電機子コイル６_７の遠心方向を向いた端部に接触されて電気的に接続されている。これら短尺コモン連結部材１０_１の円弧状端子部１０_１ｂと電機子コイル６_６の遠心方向を向いた端部との接触部、及び短尺コモン連結部材１０_１の円弧状端子部１０_１ｃと電機子コイル６_７の遠心方向を向いた端部との接触部は、例えばヒュージング溶接により電気的に確実に接続されている。 Arc-shaped terminal portion 10 1 _b of the short common connecting member 10 _1, as shown in FIG. 1 (A) (B), electrically connected in contact with the facing end of the centrifugal direction of the armature coils 6 ₆ Has been. Short common connecting member 10 ₁ of the arc-shaped terminal portions 10 1 _c, as shown in FIG. 1 (A) (B), which are electrically connected in contact with the facing end of the centrifugal direction of the armature coils 6 ₇ ing. Contact portion between the end portion facing the centrifugal direction of the arc-shaped terminal portions of the short common connecting member 10 ₁ 10 1 _b and the armature coils 6 _6, and an arcuate terminal portion 10 1 _c of the short common connecting member 10 ₁ contact portion between the end portion facing the centrifugal direction of the armature coils 6 _7, for example, is reliably electrically connected by fusing welding.

長尺コモン連結部材１０_２は、図８（Ａ）（Ｂ）に示すように、円弧状をなす基板部１０_２ａの長手方向の両側に円弧状端子部１０_２ｂ，１０_２ｃを立設した構造になっている。円弧状端子部１０_２ｂ，１０_２ｃは、基板部１０_２ａの円弧状の外向き面に凹部を向けた構造になっている。円弧状をなす基板部１０_２ａの途中には、電機子コイル６_４と６_５との遠心方向を向いた端部に対して接触しないように凹部１０_２ｄ，１０_２ｅが設けられている。 Long common connecting member 10 _2, as shown in FIG. 8 (A) (B), the arc-shaped terminal portion ₁₀ 2 b on both sides longitudinally of the substrate portion 10 ₂ a of an arc shape, the 10 ₂ c standing It has a set structure. The arc-shaped terminal portions 10 ₂ b and 10 ₂ c have a structure in which a concave portion faces the arc-shaped outward surface of the substrate portion 10 ₂ a. In the middle of the substrate portion 10 2 _a of an arc shape, a concave portion 10 2 _d, 10 2 _e is provided so as not to contact with the facing end of the centrifugal direction of the armature coil 6 ₄ and 6 ₅ Yes.

長尺コモン連結部材１０_２の円弧状端子部１０_２ｂは、図１（Ａ）（Ｂ）に示すように、電機子コイル６_３の遠心方向を向いた端部に接触されて電気的に接続されている。長尺コモン連結部材１０_２の円弧状端子部１０_２ｃは、図１（Ａ）（Ｂ）に示すように、電機子コイル６_６の遠心方向を向いた端部に接触されて電気的に接続されている。これら長尺コモン連結部材１０_２の円弧状端子部１０_２ｂと電機子コイル６_３の遠心方向を向いた端部との接触部、及び長尺コモン連結部材１０_２の円弧状端子部１０_２ｃと電機子コイル６_６の遠心方向を向いた端部との接触部は、例えばヒュージング溶接により電気的に確実に接続されている。 Arc-shaped terminal portion 10 2 _b of the elongated common connecting member 10 _2, as shown in FIG. 1 (A) (B), in contact with the facing end of the centrifugal direction of the armature coil 6 ₃ electrically It is connected. Arc-shaped terminal portion 10 2 _c of the elongated common connecting member 10 _2, as shown in FIG. 1 (A) (B), in contact with the facing end of the centrifugal direction of the armature coils 6 ₆ electrically It is connected. Contact portion between these long common coupling member 10 and _second circular-shaped terminal portion 10 2 _b and the end portion facing the centrifugal direction of the armature coils 6 _3, and the elongated common coupling member 10 and _second circular-shaped terminal portion 10 ₂ contact portion between the end portion facing the centrifugal direction of the c and the armature coils 6 ₆ is, for example, reliably electrically connected by fusing welding.

これによりＵ相、Ｖ相、Ｗ相の各電機子コイル６_１〜６_１２は、図２に示すようにスター結線されている。スター結線されているＵ相、Ｖ相、Ｗ相の各電機子コイル６_１〜６_１２のうち、Ｕ相の電機子コイルは電機子コイル６_１の遠心方向を向いた端部に図示しないＵ相リード線が接続され、Ｖ相の電機子コイルは電機子コイル６_９の遠心方向を向いた端部に図示しないがＶ相リード線が接続され、Ｗ相の電機子コイルは電機子コイル６_１２の遠心方向を向いた端部に図示しないがＶ相リード線が接続されるようになっている。 Accordingly, the U-phase, V-phase, and W-phase armature coils 6 _{1 to} 6 ₁₂ are star-connected as shown in FIG. U-phase that is star-connected, among the V-phase, the armature coils ₆₁ through ₁₂ of the W-phase, the armature coils of U-phase (not shown) on the end facing the centrifugal direction of the armature coil ₆₁ U phase lead wire is connected, the armature coils of the V-phase are not shown are connected to V-phase lead wire to the end facing the centrifugal direction of the armature coil 6 _9, the armature coil of the W-phase armature coils 6 _A V-phase lead wire is connected to an end portion of the ₁₂ facing the centrifugal direction, although not shown.

各コイル間連結部材８_１〜８_６と渡り連結部材９_１，９_２，９_３とコモン連結部材１０_１，１０_２は、図１０に示すように下部側が樹脂モールド層１１でモールドされて位置決めされている。 The inter-coil connecting members 8 ₁ to 8 ₆ , the cross connecting members 9 ₁ , 9 ₂ , 9 ₃ and the common connecting members 10 ₁ , 10 ₂ are positioned by molding the lower side with a resin mold layer 11 as shown in FIG. Has been.

電機子コイル６_１〜６_１２と連結部材８_１〜８_６，９_１，９_２，９_３，１０_１，１０_２との各接続部は、図１（Ａ）（Ｂ）に示すように、電機子中心からみて径方向に重ならずに配置されている。 As shown in FIGS. 1A and 1B, the connecting portions of the armature coils 6 _{1 to} 6 ₁₂ and the connecting members 8 ₁ to 8 ₆ , 9 ₁ , 9 ₂ , 9 _3, 10 ₁ , and 10 ₂ are as shown in FIGS. They are arranged without overlapping in the radial direction when viewed from the armature center.

上記の如き構造の電動機用電機子１では、継鉄部２とは別体で、隣接する複数の歯部４_１１，４_１２，４_１，４_２と、歯部４_３，４_４，４_５，４_６と、歯部４_７，４_８，４_９，４_１０の内周側を連結部３_１１，３_１２，３_１と、３_３，３_４，３_５と３_７，３_８，３_９とで接続した歯部ユニット４Ａ，４Ｂ，４Ｃを用いているので、電機子鉄心５の内径の真円度を向上させることができ、コギングトルクを低減することができる。また、各電機子コイル６_１〜６_１２としては、線径が例えばφ３．２ｍｍと太くて剛性が大きく独立していて単独で形状維持ができる成形された成形コイルを用いているので、コイル形状の維持ができ、各歯部４_１〜４_１２に後から嵌めて組み立てることができる。また、周方向に離れて配置されている各相の電機子コイル、即ちＵ相の直列接続された６_１，６_２と６_７，６_８、Ｖ相の直列接続された６_３，６_４と６_９，６_１０、Ｗ相の直列接続された６_５，６_６と６_１１，６_１２は単独で形状維持ができる剛性を有する連結部材、即ちＵ相渡り連結部材９_１とＶ相渡り連結部材９_２とＷ相渡り連結部材９_３とで直列接続し、且つＵ相、Ｖ相、Ｗ相の各電機子コイル、即ちＵ相の直列接続された電機子コイル６_１，６_２，６_７，６_８と、Ｖ相の直列接続された電機子コイル６_３，６_４，６_９，６_１０と、Ｗ相の直列接続された電機子コイル６_５，６_６と６_１１，６_１２は単独で形状維持ができる剛性を有する連結部材、即ち短尺コモン連結部材１０_１と長尺コモン連結部材１０_２でスター結線しているので、剛性のあるコイルの相互接続も容易に行うことができる。 In the armature 1 for an electric motor having the above-described structure, a plurality of adjacent tooth portions 4 ₁₁ , 4 ₁₂ , 4 ₁ , 4 ₂ and tooth portions 4 ₃ , 4 ₄ , 4 are separate from the yoke portion 2. ₅ , 4 ₆ and the inner peripheral side of the teeth 4 ₇ , 4 ₈ , 4 ₉ , 4 ₁₀ are connected to the connecting portions 3 ₁₁ , 3 ₁₂ , 3 ₁ , 3 ₃ , 3 ₄ , 3 ₅ and 3 ₇ , 3 _8. , tooth units 4A are connected by a 3 _9, 4B, because of the use of 4C, it is possible to improve the roundness of the inner diameter of the armature core 5, it is possible to reduce the cogging torque. In addition, as each of the armature coils 6 _{1 to} 6 ₁₂ , a coil shape is used because the wire diameter is thick, for example, φ3.2 mm, and the rigidity is large and independent, and the shape can be maintained independently. Can be maintained, and can be assembled by being fitted to the teeth 4 ₁ to 4 ₁₂ later. Further, armature coils of respective phases arranged apart from each other in the circumferential direction, that is, U 1 phase 6 ₁ , 6 ₂ and 6 ₇ , 6 ₈ , V phase serial connection 6 ₃ , 6 ₄ When ₆ _{9, 6 10,} serially connected ₆ 5 W-phase, _{6 6} ₆ _{11, 6 12} connecting member having a rigidity that can alone shape retention, i.e. U-phase transition coupling member _{9 1} and V-phase transition connecting members 9 are connected in series between ₂ and W-phase transition coupling member 9 _3, and U-phase, V-phase, the armature coils of the W-phase, i.e. U-phase series-connected armature coils 6 _1, 6 _2, 6 ₇ , 6 ₈ , V-phase series-connected armature coils 6 ₃ , 6 ₄ , 6 ₉ , 6 ₁₀ , W-phase series-connected armature coils 6 ₅ , 6 ₆ and 6 ₁₁ , 6 ₁₂ coupling member, i.e. short common connecting member 10 ₁ and elongated common connecting member having a rigidity that can alone shape retention 0 ₂ since the star connection can be easily performed interconnection of the coils a rigid.

また、周方向に所定の分布で配置されていて単独で形状維持ができる各相の電機子コイル６_１〜６_１２は、１つの相を隣接する２個のコイル、即ちＵ相は電機子コイル６_１，６_２と６_７，６_８、Ｖ相は電機子コイル６_３，６_４と６_９，６_１０、Ｗ相は電機子コイル６_５，６_６と６_１１，６_１２で構成し、これら２個のコイルをＵ相は連結部材８_１と８_４、Ｖ相は連結部材８_２と８_５、Ｗ相はＷ相は８_３と８_６とで直列接続しているので、線材が太くて１つのコイルのターン数を多く巻けなくても、これらコイルのグループで所要のターン数を得ることができる。 The armature coils 6 _{1 to} 6 ₁₂ of each phase that are arranged in a predetermined distribution in the circumferential direction and can maintain the shape independently are two coils adjacent to one phase, that is, the U phase is an armature coil. 6 ₁ , 6 ₂ and 6 ₇ , 6 ₈ , V phase is composed of armature coils 6 ₃ , 6 ₄ and 6 ₉ , 6 ₁₀ , and W phase is composed of armature coils 6 ₅ , 6 ₆ and 6 ₁₁ , 6 _12. These two coils are connected in series by connecting members 8 ₁ and 8 ₄ for the U phase, connecting members 8 ₂ and 8 _{5 for} the V phase, and 8 ₃ and 8 _{6 for the} W phase for the W phase. The required number of turns can be obtained in a group of these coils even if the coil is thick and it is not possible to wind many turns of one coil.

さらに、各電機子コイル６_１〜６_１２は、同じ少ないターン数で構成されているので、太く剛性が大きい線材でのコイルの形成を能率良く、短時間で行うことができる。 Further, since each of the armature coils 6 _{1 to} 6 ₁₂ is configured with the same small number of turns, the coil can be efficiently formed in a short time with a thick wire having a large rigidity.

電機子コイル６_１〜６_１２と連結部材８_１〜８_６，９_１，９_２，９_３，１０_１，１０_２との各接続部を、電機子中心からみて径方向に重ならずに配置しているので、これら接続部のヒュージング溶接を容易に行うことができる。 The connecting portions of the armature coils 6 _{1 to} 6 ₁₂ and the connecting members 8 ₁ to 8 ₆ , 9 ₁ , 9 ₂ , 9 _3, 10 ₁ , 10 ₂ do not overlap in the radial direction when viewed from the center of the armature. Since it arrange | positions, the fusing welding of these connection parts can be performed easily.

また継鉄部２を、周方向に等間隔で複数に分割された複数の継鉄部分割ユニット２_１，２_２，２_３により形成しているので、同じ継鉄部分割ユニットを複数用いて継鉄部を構成することができる。 Moreover, since the yoke part 2 is formed of a plurality of yoke part dividing units 2 ₁ , 2 ₂ , 2 ₃ divided into a plurality at equal intervals in the circumferential direction, a plurality of the same yoke part dividing units are used. A yoke part can be constituted.

図１１は上記の如き構造の電動機用電機子１を用いた電動機の一例を示す縦断面図である。 FIG. 11 is a longitudinal sectional view showing an example of an electric motor using the motor armature 1 having the above structure.

この電動機は、有底筒状の鉄製のヨーク１２を備え、該ヨーク１２内には前述した環状の電機子１が位置決めされて配置され、樹脂１３でモールドされ、ヨーク１２の開口部側は端板１４で塞がれている。電機子１の中には、ロータ１５が配置され、該ロータ１５は回転軸１６の外周に持されている。回転軸１６は、樹脂１３と端板１４に支持された軸受１７ａ，１７ｂでロータ１５と共に回転自在になっている。ロータ１５は、有底筒状をしていて底部側が回転軸１６の外周に固定されたロータヨーク１８と、該ロータヨーク１８の筒部の外周に固定された永久磁石１９とで構成されている。なお、２０は電機子１側に支持されたホールＩＣ、２１はロータ１４側の回転軸１６に支持されたセンサマグネットである。 This electric motor includes a bottomed cylindrical iron yoke 12, in which the above-described annular armature 1 is positioned and placed, molded with resin 13, and the opening side of the yoke 12 is the end. It is blocked by a plate 14. A rotor 15 is disposed in the armature 1, and the rotor 15 is held on the outer periphery of the rotating shaft 16. The rotating shaft 16 is rotatable together with the rotor 15 by bearings 17 a and 17 b supported by the resin 13 and the end plate 14. The rotor 15 has a bottomed cylindrical shape, and includes a rotor yoke 18 whose bottom side is fixed to the outer periphery of the rotary shaft 16 and a permanent magnet 19 fixed to the outer periphery of the cylindrical portion of the rotor yoke 18. Reference numeral 20 denotes a Hall IC supported on the armature 1 side, and reference numeral 21 denotes a sensor magnet supported on the rotating shaft 16 on the rotor 14 side.

（Ａ）（Ｂ）は本発明に係る電動機用電機子の下段部と上段部との接続関係を示す平面図である。(A) (B) is a top view which shows the connection relation of the lower stage part and upper stage part of the armature for motors concerning this invention. 本例の電動機用電機子の配線図である。It is a wiring diagram of the armature for motors of this example. （Ａ）（Ｂ）は本例で用いるコイル間連結部材の平面図及び正面図である。(A) (B) is the top view and front view of the connection member between coils which are used in this example. （Ａ）（Ｂ）は本例で用いるＵ相渡り結部材の平面図及び正面図である。(A) and (B) are the top view and front view of a U-phase connecting member used in this example. （Ａ）（Ｂ）は本例で用いるＶ相渡り結部材の平面図及び正面図である。(A) and (B) are a plan view and a front view of a V-phase connecting member used in this example. （Ａ）（Ｂ）は本例で用いるＷ相渡り結部材の平面図及び正面図である。(A) and (B) are a plan view and a front view of a W-phase connecting member used in this example. （Ａ）（Ｂ）は本例で用いる短尺コモン連結部材の平面図及び側面図である。(A) and (B) are a plan view and a side view of a short common connecting member used in this example. （Ａ）（Ｂ）は本例で用いる長尺コモン連結部材の平面図及び側面図である。(A) and (B) are the top view and side view of a elongate common connection member used by this example. 本例で用いる各連結部材の配置関係を示す斜視図である。It is a perspective view which shows the arrangement | positioning relationship of each connection member used in this example. 図９の下部を樹脂モールドした斜視図である。It is the perspective view which resin-molded the lower part of FIG. 本例の電動機用電機子を用いた電動機の一例を示す縦断面図である。It is a longitudinal cross-sectional view which shows an example of the electric motor using the armature for electric motors of this example.

符号の説明Explanation of symbols

１電動機用電機子
２継鉄部
２_１，２_２，２_３継鉄部分割ユニット
３_１〜３_１２連結部
４_１〜４_１２歯部
５電機子鉄心
６_１〜６_１２電機子コイル
７_１，７_２，７_３凹凸連結部
８_１〜８_６コイル間連結部材
９_１Ｕ相渡り連結部材
９_２Ｖ相渡り連結部材
９_３Ｗ相渡り連結部材
１０_１短尺コモン連結部材
１０_２長尺コモン連結部材
１１樹脂モールド層
１２ヨーク
１３樹脂
１４端板
１５ロータ
１６回転軸
１７ａ，１７ｂ軸受
１８ロータヨーク
１９永久磁石
２０ホールＩＣ
２１センサマグネット
1 motor armature 2 yoke portion 2 _1, ₂ 2, _{2 3} yoke portion divided units 3 ₁ to 3 ₁₂ connecting portion ₄₁ to ₁₂ teeth 5 armature core ₆₁ through ₁₂ the armature coil 7 ₁ , 7 ₂ , 7 ₃ Uneven connection portion 8 ₁ to 8 ₆ Inter-coil connection member 9 ₁ U cross-connection connection member
9 ₂ V crossover connecting member
9 ₃ W crossover connecting member 10 ₁ short common connecting member
DESCRIPTION OF SYMBOLS 10 ₂ Long common connection member 11 Resin mold layer 12 Yoke 13 Resin 14 End plate 15 Rotor 16 Rotating shaft 17a, 17b Bearing 18 Rotor yoke 19 Permanent magnet 20 Hall IC
21 Sensor magnet

Claims

環状に形成された継鉄部と、前記継鉄部にその周方向に等角度間隔で接続され且つ内周に位置する隣接先端の相互間が連結部で連結された１２本の歯部とで構成された電機子鉄心と、前記各歯部に巻装されたＵ相、Ｖ相、Ｗ相の各電機子コイルとを備えた電動機用電機子において、
内周側が前記連結部で連結された前記各歯部は隣接する複数の該歯部を単位として前記連結部で分割されて複数の歯部ユニットとして構成され、
前記各歯部には独立していて単独で形状維持ができる成形された前記電機子コイルが嵌め込まれており、
周方向に隣接して配置されている同相の２個の前記各電機子コイルは単独で形状維持ができる剛性を有する連結部材で直列接続され、
周方向に離れて配置されている各相の前記電機子コイルは単独で形状維持ができる剛性を有する連結部材で直列接続され、
Ｕ相、Ｖ相、Ｗ相の前記各電機子コイルは単独で形状維持ができる剛性を有する連結部材でスター結線されていることを特徴とする電動機用電機子。 A yoke part formed in an annular shape, and 12 tooth parts connected to the yoke part at equal angular intervals in the circumferential direction and connected between adjacent tips located on the inner periphery by a connecting part In an armature for an electric motor comprising a configured armature core, and U-phase, V-phase, and W-phase armature coils wound around each tooth portion,
Each tooth part whose inner peripheral side is connected by the connecting part is divided as a unit by a plurality of adjacent tooth parts and is configured as a plurality of tooth part units.
Each tooth part is fitted with the molded armature coil that is independent and can maintain the shape independently,
The two in-phase armature coils arranged adjacent to each other in the circumferential direction are connected in series with a connecting member having rigidity capable of maintaining the shape independently,
The armature coils of the respective phases arranged apart in the circumferential direction are connected in series with a connecting member having rigidity capable of maintaining the shape independently,
The armature for an electric motor, wherein each of the U-phase, V-phase, and W-phase armature coils is star-connected by a connecting member having rigidity capable of maintaining the shape independently.

前記電機子コイルと前記連結部材との各接続部は、電機子中心からみて径方向に重ならずに配置されていることを特徴とする請求項１に記載の電動機用電機子。 2. The armature for an electric motor according to claim 1, wherein each connection portion between the armature coil and the connecting member is disposed so as not to overlap in a radial direction when viewed from the center of the armature.

前記継鉄部は、周方向に等間隔で複数に分割された複数の継鉄部分割ユニットにより形成されていることを特徴とする請求項１または２に記載の電動機用電機子。
The armature for an electric motor according to claim 1 or 2, wherein the yoke portion is formed by a plurality of yoke portion dividing units divided into a plurality at equal intervals in the circumferential direction.