JP2010226861A - Stator and device for manufacturing rectangular wire - Google Patents

Stator and device for manufacturing rectangular wire Download PDF

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JP2010226861A
JP2010226861A JP2009070993A JP2009070993A JP2010226861A JP 2010226861 A JP2010226861 A JP 2010226861A JP 2009070993 A JP2009070993 A JP 2009070993A JP 2009070993 A JP2009070993 A JP 2009070993A JP 2010226861 A JP2010226861 A JP 2010226861A
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insulating material
slot
magnetic material
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groove
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JP5381213B2 (en
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Norihisa Mishina
徳久 三品
Kazuya Kurata
和也 倉田
Keita Kamei
恵多 亀井
Shingo Hashimoto
伸吾 橋本
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Aisin AW Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a stator in which the insulation between a slot conductor 11 of a rectangular wire and the tip of a rotor or a tooth 6 can be made to be sufficient, and a magnetic material 14 can be readily arranged in the opening of a slot 5. <P>SOLUTION: The slot conductor 11, arranged in the opening of the slot 5, is covered with an insulating material 13a, prior to being arranged in the slot 5. At this time, in a state where the magnetic material 14 the periphery of which is covered with an insulating material 13b, is arranged on one surface of the slot conductor 11, the slot conductor 11 and the magnetic material 14 are covered with the insulating material 13a. As a result, the slot conductor 11 can be installed readily, and the magnetic material 14 can be treated integrally, and the slot conductor 11 is facilitated for easy arrangement to the slot 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、例えば、回転電機用のステータ、及び、該ステータに組み込まれ、コイルの巻線（マグネットワイヤ）を構成する断面矩形の平角線の製造装置に係り、詳しくは、ステータコアのスロットの開口側に配置される平角線の絶縁を図り、更には、スロット開口部に磁性材を配置するものである。   The present invention relates to, for example, a stator for a rotating electrical machine and a manufacturing apparatus for a rectangular wire with a rectangular cross section which is incorporated in the stator and forms a coil winding (magnet wire). The rectangular wire arranged on the side is insulated, and a magnetic material is arranged in the slot opening.

一般に、誘導モータ、直流モータ（ジェネレータを含む）等の回転電機は、産業用又は車輌用の動力源として広く用いられており、そのステータのコイルのレイアウトは、比出力が高い分布巻きが多用されている。近時、ハイブリット駆動車輌及び電気自動車に用いられるモータとして、出力／寸法要求等からスロットの占積率の高い平角線をマグネットワイヤとして用いることが提案されている。   In general, rotating electrical machines such as induction motors and direct current motors (including generators) are widely used as power sources for industrial or vehicle use, and distributed winding with high specific output is often used for the layout of the stator coils. ing. Recently, as a motor used in a hybrid drive vehicle and an electric vehicle, it has been proposed to use a rectangular wire having a high slot space factor as a magnet wire because of output / size requirements and the like.

また、モータのサイズ等によっては、ロータを構成する磁石とステータコアとの間の磁束密度がスロットの開口部で変動して渦電流が流れ、モータの効率を低下させる場合がある。このため、従来、ステータコアのスロット内にコイルを配置した状態で、各スロットの開口部に磁性材（磁性ウェッジ）を配置して、渦電流による損失を抑制していた（特許文献１ないし４参照）。   In addition, depending on the size of the motor, the magnetic flux density between the magnets constituting the rotor and the stator core may fluctuate at the opening of the slot and eddy current may flow, which may reduce the motor efficiency. For this reason, conventionally, a magnetic material (magnetic wedge) is arranged in the opening of each slot in a state where the coil is arranged in the slot of the stator core to suppress loss due to eddy current (see Patent Documents 1 to 4). ).

特開平５−２１１７３９号公報JP-A-5-211739 特開平７−１２３６２２号公報JP-A-7-123622 特開平１０−２４３５９６号公報JP-A-10-243596 特開平７−２２７０５３号公報JP-A-7-227053

しかしながら、従来、磁性材をスロットの開口部に配置することは難しく、該磁性材の配置不良が生じる可能性があった。即ち、上述したような渦電流による損失を防止するための磁性材は、例えば、鉄粉等の磁性材を薄い板状に固めたものを使用する。したがって、このような磁性材は剛性が低く、例えば、スロット内にコイルを配置した状態で磁性材を押し込む際に、磁性材に座屈等の変形が生じる可能性があった。また、このような板厚が小さい磁性材を、幅が狭いスロットの開口部に配置すること自体、容易ではない。また、磁性材の固定は、ワニスによる固着が一般的であるが、スロットにワニスを滴下含浸することは難しく、固着力が安定しにくかった。このような事情により、従来、磁性材の配置不良が生じる可能性があった。   However, conventionally, it has been difficult to dispose the magnetic material in the opening of the slot, and there has been a possibility of poor placement of the magnetic material. That is, as the magnetic material for preventing the loss due to the eddy current as described above, for example, a magnetic material such as iron powder that is solidified in a thin plate shape is used. Therefore, such a magnetic material has low rigidity. For example, when the magnetic material is pushed in with a coil disposed in the slot, the magnetic material may be deformed such as buckling. Further, it is not easy to arrange such a magnetic material having a small plate thickness in the opening of a narrow slot. The magnetic material is generally fixed by varnish, but it is difficult to drop and impregnate the slot with varnish, and the fixing force is difficult to stabilize. Under such circumstances, conventionally, there has been a possibility that poor placement of the magnetic material may occur.

また、ステータコアのスロットの開口側に配置したコイルと、該ステータコアのティースの先端或はステータコアと対向するロータとの間は、沿面距離が小さいため、絶縁する必要があるが、このような絶縁を有効に行える構造は、従来知られていなかった。特に、コイルとして占積率の高い平角線を使用した場合には、絶縁を十分に行う必要がある。   Further, since the creepage distance is small between the coil arranged on the opening side of the stator core slot and the tip of the teeth of the stator core or the rotor facing the stator core, it is necessary to insulate such insulation. An effective structure has not been known. In particular, when a rectangular wire with a high space factor is used as the coil, it is necessary to sufficiently insulate.

例えば、前述の特許文献１ないし４に記載された発明のように、絶縁材により覆った磁性材をスロットの開口部に配置したり、合成樹脂製の板材を配置して、コイルとロータ或はティースの先端との間を絶縁することが考えられるが、上述したような、磁性材をスロットの開口部に配置しにくいと言う問題が存在し、合成樹脂製の板材についても同様の問題が生じると考えられるため、好ましい構造とは言えない。また、スロットの開口部に磁性材等を配置するために、スロットの形状を該磁性材等を配置しない場合に比べて変更する必要があり、このような形状変更を行うために、スロットの開口部にある程度のスペースを確保する必要がある。このため、コイルとロータとの距離が大きくなって、モータ出力が減少することが避けられない。   For example, as in the inventions described in the above-mentioned Patent Documents 1 to 4, a magnetic material covered with an insulating material is arranged in the opening of the slot, or a plate made of synthetic resin is arranged, so that the coil and rotor or Although it is conceivable to insulate the tip of the teeth, there is a problem that it is difficult to dispose the magnetic material in the opening of the slot as described above, and the same problem occurs with the synthetic resin plate material. Therefore, it is not a preferable structure. In addition, in order to arrange a magnetic material or the like in the opening of the slot, it is necessary to change the shape of the slot as compared with the case where the magnetic material or the like is not arranged. It is necessary to secure a certain amount of space in the part. For this reason, it is inevitable that the distance between the coil and the rotor becomes large and the motor output decreases.

そこで、本発明は、コイルを構成する平角線とロータ或はティースの先端との絶縁を十分に図れ、好ましくは、スロットの開口部に容易に磁性材を配置できるステータを提供すると共に、このような構成に適した平角線の製造装置を提供することを目的とするものである。   Accordingly, the present invention provides a stator that can sufficiently insulate the rectangular wire constituting the coil and the tip of the rotor or teeth, and preferably provides a stator in which a magnetic material can be easily arranged in the opening of the slot. An object of the present invention is to provide a flat wire manufacturing apparatus suitable for various configurations.

本発明は、それぞれが略円筒状の周面に開口するように径方向に形成されたスロット（５）を円周方向複数個所に有するステータコア（２）と、コイルの巻線を構成し、前記各スロット（５）内に、径方向に複数重ねた状態で配置される平角線（スロット導体部１１）と、を備えたステータ（１）において、
前記各平角線（１１）のうち、少なくとも前記各スロット（５）の最も開口側に位置する平角線（１１）が、その開口側側面に該平角線（１１）と絶縁した磁性材（１４）を配置した状態で、該磁性材（１４）と共に絶縁材（１３ａ）により覆われていることを特徴とするものである。 The present invention comprises a stator core (2) having a plurality of slots (5) formed in a radial direction so as to open to a substantially cylindrical peripheral surface, and a winding of a coil, In each of the slots (5), a stator (1) provided with a rectangular wire (slot conductor portion 11) arranged in a state of being overlaid in the radial direction.
Of the rectangular wires (11), at least the rectangular wire (11) located closest to the opening of each slot (5) has a magnetic material (14) insulated from the rectangular wire (11) on the side surface of the opening. The magnetic material (14) and the insulating material (13a) cover the magnetic material (14).

前記各スロット（５）の最も開口側に位置する平角線（１１）を含む平角線（１１）が、周囲を絶縁された前記磁性材（１４）と共に前記絶縁材（１３ａ）により覆われている。   The rectangular wire (11) including the rectangular wire (11) located closest to the opening of each slot (5) is covered with the insulating material (13a) together with the magnetic material (14) insulated around the periphery. .

前記各スロット（５）の最も開口側に位置する平角線（１１）を含む平角線（１１）が絶縁材に覆われ、該絶縁材に覆われた平角線（１１）が、前記磁性材（１４）と共に更に前記絶縁材（１３ａ）により覆われている。   A flat wire (11) including a flat wire (11) located closest to the opening of each slot (5) is covered with an insulating material, and the flat wire (11) covered with the insulating material is covered with the magnetic material (11). 14) and further covered with the insulating material (13a).

また、本発明は、コイルの巻線を構成し、絶縁材（１３ａ）に覆われた平角線の製造装置において、
片面に前記平角線（スロット導体部１１）の幅に対応した幅を有する溝（１９）を形成した固定治具（１６）と、
該平角線（１１）を該溝（１９）内に押し込むための押し治具（１７）と、
前記固定治具（１６）の片面に沿って、前記溝（１９）の幅方向両側から該溝（１９）上を交互に通るように変位する１対の変位治具（１８ａ，１８ｂ）と、を備え、
絶縁材（１３ａ）を、前記固定治具（１６）の片面に前記溝（１９）を覆うように配置し、該絶縁材（１３ａ）の該溝（１９）と反対側に前記平角線（１１）を配置し、前記押し治具（１７）により該平角線（１１）を該溝（１９）内に押し込むと共に、前記絶縁材（１３ａ）の該平角線（１１）よりも幅方向両側に存在する部分を該溝（１９）の側面に沿って立たせ、前記両変位治具（１８ａ，１８ｂ）を交互に該溝（１９）上を前記固定治具（１６）の片面に沿って変位させることにより、前記絶縁材（１３ａ）の該溝（１９）よりも突出した部分をそれぞれ折り曲げて、前記平角線（１１）を該絶縁材（１３ａ）により覆うことを特徴とするものである。 Further, the present invention is a flat wire manufacturing apparatus comprising a coil winding and covered with an insulating material (13a).
A fixing jig (16) having a groove (19) having a width corresponding to the width of the flat wire (slot conductor portion 11) on one side;
A pushing jig (17) for pushing the flat wire (11) into the groove (19);
A pair of displacement jigs (18a, 18b) that are displaced so as to alternately pass over the groove (19) from both sides in the width direction of the groove (19) along one surface of the fixing jig (16); With
An insulating material (13a) is disposed on one side of the fixing jig (16) so as to cover the groove (19), and the rectangular wire (11 is formed on the opposite side of the insulating material (13a) from the groove (19). ), The flat wire (11) is pushed into the groove (19) by the pushing jig (17), and is present on both sides in the width direction of the flat wire (11) of the insulating material (13a). A portion to be erected along the side surface of the groove (19), and the displacement jigs (18a, 18b) are alternately displaced on the groove (19) along one side of the fixing jig (16). Thus, the portion of the insulating material (13a) protruding from the groove (19) is bent, and the rectangular wire (11) is covered with the insulating material (13a).

片側面に周囲が絶縁された磁性材（１４）を配置した状態で、前記平角線（１１）を該磁性材（１４）と共に前記絶縁材（１３ａ）により覆う。   The flat wire (11) is covered with the insulating material (13a) together with the magnetic material (14) in a state where the magnetic material (14) whose periphery is insulated is arranged on one side surface.

絶縁材により覆われた平角線（１１）の片側面に磁性材（１４）を配置した状態で、該平角線（１１）を該磁性材（１４）と共に更に絶縁材により覆う。   In a state where the magnetic material (14) is arranged on one side of the flat wire (11) covered with the insulating material, the flat wire (11) is further covered with the insulating material together with the magnetic material (14).

なお、上記カッコ内の符号は、図面と対照するためのものであるが、これにより各請求項の構成に何等影響を及ぼすものではない。   In addition, although the code | symbol in the said parenthesis is for contrast with drawing, it has no influence on the structure of each claim by this.

請求項１に係る本発明によると、スロットの開口側に配置される平角線を絶縁材により覆っているため、該平角線とロータ或はティースの先端との絶縁を十分に図れる。また、スロットに配置する前に開口側の平角線を絶縁材により覆えば、該平角線とロータ或はティースの先端との間の絶縁を、容易に行える。また、該平角線に予め磁性材を固定できるため、該磁性材の配置を容易且つ確実に行え、該磁性材の配置不良が生じることを防止できる。また、スロットの開口部に該磁性材を配置するために、該スロットの形状を該磁性材を配置しない場合に比べて変更する必要がない。このため、コイルとロータとの距離が大きくなることを防止でき、モータ出力が減少することが防止できる。   According to the first aspect of the present invention, since the rectangular wire disposed on the opening side of the slot is covered with the insulating material, the rectangular wire and the tip of the rotor or the tooth can be sufficiently insulated. Further, if the rectangular wire on the opening side is covered with an insulating material before being placed in the slot, the insulation between the rectangular wire and the tip of the rotor or teeth can be easily performed. Further, since the magnetic material can be fixed in advance to the rectangular wire, the magnetic material can be easily and reliably arranged, and the occurrence of poor arrangement of the magnetic material can be prevented. Further, since the magnetic material is disposed in the opening of the slot, it is not necessary to change the shape of the slot compared to the case where the magnetic material is not disposed. For this reason, it can prevent that the distance of a coil and a rotor becomes large, and can prevent that a motor output reduces.

請求項２に係る本発明によると、予め、磁性材の周囲を絶縁しているため、該磁性材と平角線との絶縁を確実に行える。   According to the second aspect of the present invention, since the periphery of the magnetic material is previously insulated, the magnetic material and the rectangular wire can be reliably insulated.

請求項３に係る本発明によると、平角線を絶縁材により覆った後、更に磁性材を配置した状態で絶縁材により覆うため、磁性材に予め絶縁処理を施す必要がない。また、磁性材の配置も容易且つ確実に行え、該磁性材の配置不良が生じることを防止できる。   According to the third aspect of the present invention, since the rectangular wire is covered with the insulating material and then covered with the insulating material in a state where the magnetic material is further disposed, it is not necessary to subject the magnetic material to an insulating treatment in advance. In addition, the magnetic material can be easily and reliably arranged, and the magnetic material can be prevented from being poorly arranged.

請求項４に係る本発明によると、平角線を絶縁材により覆う作業を容易に行える。また、絶縁材を平角線に沿って容易に折り曲げることができるため、該絶縁材に位置ずれやしわが生じる等の不良が生じにくい。   According to the fourth aspect of the present invention, the operation of covering the flat wire with the insulating material can be easily performed. In addition, since the insulating material can be easily bent along the flat wire, defects such as misalignment and wrinkles are unlikely to occur in the insulating material.

請求項５に係る本発明によると、平角線に周囲を絶縁された磁性材を配置した状態で絶縁材により覆う作業を容易に行える。また、絶縁材に位置ずれやしわが生じる等の不良が生じにくい。   According to the fifth aspect of the present invention, the work of covering with the insulating material can be easily performed in a state in which the magnetic material whose periphery is insulated is disposed on the flat wire. In addition, defects such as misalignment and wrinkles are less likely to occur in the insulating material.

請求項６に係る本発明によると、絶縁材により覆われた平角線に磁性材を配置した状態で、更に絶縁材により覆う作業を容易に行える。また、絶縁材に位置ずれやしわが生じる等の不良が生じにくい。   According to the sixth aspect of the present invention, the work of covering with the insulating material can be easily performed in a state in which the magnetic material is arranged on the rectangular wire covered with the insulating material. In addition, defects such as misalignment and wrinkles are less likely to occur in the insulating material.

本発明により製造されるステータを示す斜視図。The perspective view which shows the stator manufactured by this invention. そのコイル（Ｕ相）を示す斜視図。The perspective view which shows the coil (U phase). 本発明の実施の形態に係るステータを、スロット内にコイルを配置した状態で示す、拡大断面図。The expanded sectional view which shows the stator which concerns on embodiment of this invention in the state which has arrange | positioned the coil in the slot. 本発明の実施の形態に係る平角線の製造装置を示す正面図。The front view which shows the manufacturing apparatus of the flat wire which concerns on embodiment of this invention. 図４のａ−ａ断面の一部を省略して示す図。The figure which abbreviate | omits and shows a part of aa cross section of FIG. 本発明の実施の形態に係る平角線の製造装置の押し治具を省略して示す平面図。The top view which abbreviate | omits and shows the pressing jig of the manufacturing apparatus of the flat wire which concerns on embodiment of this invention. 本発明の実施の形態に係る平角線の製造装置による製造工程の第一工程を示す、正面図、拡大図、及び、平角線と絶縁材との関係を示す模式図。The front view which shows the 1st process of the manufacturing process by the manufacturing apparatus of the flat wire which concerns on embodiment of this invention, an enlarged view, and the schematic diagram which shows the relationship between a flat wire and an insulating material. 同じく第二工程を示す正面図、拡大図、及び、平角線と絶縁材との関係を示す模式図。The front view which similarly shows a 2nd process, an enlarged view, and the schematic diagram which shows the relationship between a flat wire and an insulating material. 同じく第三工程を示す正面図、拡大図、及び、平角線と絶縁材との関係を示す模式図。The front view which similarly shows a 3rd process, an enlarged view, and the schematic diagram which shows the relationship between a flat wire and an insulating material. 同じく第四工程を示す正面図、拡大図、及び、平角線と絶縁材との関係を示す模式図。The front view which similarly shows a 4th process, an enlarged view, and the schematic diagram which shows the relationship between a flat wire and an insulating material. 同じく第五工程を示す正面図、拡大図、及び、平角線と絶縁材との関係を示す模式図。The front view which similarly shows a 5th process, an enlarged view, and the schematic diagram which shows the relationship between a flat wire and an insulating material. 同じく第六工程を示す正面図、拡大図、及び、平角線と絶縁材との関係を示す模式図。The front view which similarly shows a 6th process, an enlarged view, and the schematic diagram which shows the relationship between a flat wire and an insulating material.

本発明の実施の形態を図面に沿って説明する。まず、本発明により製造される対象となる回転電機（モータ、ジェネレータ等）のステータの１例について、図１及び図２に沿って説明する。本ステータ１は、ロータと共に電気モータ（ジェネレータを含む）を構成し、該電気モータは、電気自動車及びハイブリッド車輌の駆動源となる電気モータ（含むジェネレータ）、特にブラシレスＤＣモータに適用して好適である。ステータ１は、図１に示すように、多数の珪素鋼板の薄板を積層したステータコア２、及び、所定の素材であるマグネットワイヤ（導体、巻線）３を巻回したコイル４からなる。ステータコア２は、リング状からなり、内径側に開口するスロット５及びティース６が交互に多数形成されている。そして、所定ピッチ離れた２個のスロット５の間を分布巻きにて３相Ｕ，Ｖ，Ｗの各コイル４（４Ｕ，４Ｖ，４Ｗ）が巻かれている。   Embodiments of the present invention will be described with reference to the drawings. First, an example of a stator of a rotating electrical machine (motor, generator, etc.) to be manufactured according to the present invention will be described with reference to FIGS. The stator 1 constitutes an electric motor (including a generator) together with a rotor, and the electric motor is suitable for application to an electric motor (including a generator) serving as a drive source for electric vehicles and hybrid vehicles, particularly a brushless DC motor. is there. As shown in FIG. 1, the stator 1 includes a stator core 2 in which a large number of thin silicon steel plates are laminated, and a coil 4 around which a magnet wire (conductor, winding) 3 that is a predetermined material is wound. The stator core 2 is formed in a ring shape, and a plurality of slots 5 and teeth 6 that are open on the inner diameter side are alternately formed. The three-phase U, V, W coils 4 (4U, 4V, 4W) are wound between the two slots 5 separated by a predetermined pitch by distributed winding.

マグネットワイヤ３は、断面矩形状の平角線からなり、銅等からなる導体部の全周に絶縁樹脂等の絶縁被膜が形成されている。上記ワイヤ３からなる３相のコイル４Ｕ，４Ｖ，４Ｗは、同相のスロット５内においては、同相の複数本（例えば４本）のワイヤ３がステータコア２の径方向に並んで配置されており、かつステータコア２の軸方向Ｌの一端面７から突出した一端側コイルエンド部８においては、同相の複数本のワイヤ３がステータコア２の径方向（又は軸方向）に並んで配置され、ステータコア２の軸方向Ｌの他端面９から突出した他端側コイルエンド部１０においては、同相の複数本のワイヤ３がステータコア２の径方向内径側に屈曲すると共にステータコア２の径方向に並んで配置されている。   The magnet wire 3 is a rectangular wire having a rectangular cross section, and an insulating coating such as an insulating resin is formed on the entire circumference of a conductor portion made of copper or the like. The three-phase coils 4U, 4V, 4W made of the wires 3 are arranged in the same-phase slot 5 in which a plurality of (for example, four) wires 3 having the same phase are arranged side by side in the radial direction of the stator core 2. In addition, in the one end side coil end portion 8 protruding from the one end surface 7 in the axial direction L of the stator core 2, a plurality of wires 3 having the same phase are arranged side by side in the radial direction (or axial direction) of the stator core 2. In the other end side coil end portion 10 protruding from the other end surface 9 in the axial direction L, a plurality of wires 3 having the same phase are bent toward the radially inner diameter side of the stator core 2 and arranged side by side in the radial direction of the stator core 2. Yes.

代表してＵ相のコイル４Ｕを示すと、コイル４Ｕは、図２に示すように、隣接する２個のスロット５，５を占めるように、２組４Ｕ１，４Ｕ２がセットとなって、隣接する２個のスロット５，５の近い方同士、遠い方同士が所定間隔隔てて連結するようかつ上記２組が交互に連結するように構成されている。各組のコイル４Ｕ１，４Ｕ２は、スロット５内に配置されるスロット導体部１１と、ステータコア２の一端面７から突出して、所定間隔隔てたスロット導体部１１を連結するように、周方向Ｍに延びる一端側コイルエンド部８と、ステータコア２の他端面９から突出して、所定間隔離れたスロット導体部１１と連結するように、内径方向Ｒ１に屈曲して周方向Ｍに延びる他端側コイルエンド部１０と、からなる。両コイルエンド部８，１０は、それぞれが軸方向Ｌ又は径方向Ｒに互に干渉することなく並ぶように、周方向に（例えばＹ）又は軸方向に（例えばＸ）複数に屈曲して（折り曲げて）いる。   As a representative example, the U-phase coil 4U is adjacent to the coil 4U in such a way that two sets 4U1 and 4U2 are set so as to occupy two adjacent slots 5 and 5, as shown in FIG. The two slots 5 and 5 are configured so that the closer and far sides of the two slots 5 and 5 are connected at a predetermined interval and the two sets are connected alternately. Each set of coils 4U1 and 4U2 projects in the circumferential direction M so as to connect the slot conductor portion 11 disposed in the slot 5 and the slot conductor portion 11 protruding from one end surface 7 of the stator core 2 and spaced apart from each other. One end side coil end portion 8 extending from the other end face 9 of the stator core 2 and the other end side coil end extending in the circumferential direction M by bending in the inner diameter direction R1 so as to be connected to the slot conductor portion 11 separated by a predetermined distance. Part 10. Both coil end portions 8 and 10 are bent in a plurality of circumferential directions (for example, Y) or axial directions (for example, X) so that they are arranged without interfering with each other in the axial direction L or the radial direction R ( It is bent).

図３は、上述のように、スロット５内にスロット導体部１１を配置した部分を詳しく示している。各スロット５は、略円筒状の内周面に開口するように径方向に形成されており、同図に示すように、それぞれのスロット５には、４本の平角線の一部であるスロット導体部１１を重ねて配置している。また、スロット５と各スロット導体部１１との間には、絶縁シート１２を配置し、各スロット導体部１１とスロット５との間を絶縁している。   FIG. 3 shows in detail the portion where the slot conductor portion 11 is disposed in the slot 5 as described above. Each slot 5 is formed in a radial direction so as to open to a substantially cylindrical inner peripheral surface. As shown in the figure, each slot 5 has a slot which is a part of four rectangular wires. The conductor portions 11 are arranged so as to overlap each other. Further, an insulating sheet 12 is disposed between the slot 5 and each slot conductor portion 11 to insulate between each slot conductor portion 11 and the slot 5.

本実施の形態の場合、前記絶縁シート１２に加えて、スロット５の最も開口側（最内径）に配置されるスロット導体部１１をシート状の絶縁材１３ａにより覆っている。このように最内径のスロット導体部１１を絶縁材１３ａにより覆うのは、ステータコア２内にロータを配置した状態で、該ロータ及びティース６の先端との沿面距離が最も近いためである。したがって、モータのサイズにより、最内径のスロット導体部１１よりも外径側に存在するスロット導体部１１のロータ等までの沿面距離も近くなる場合には、最内径側から複数のスロット導体部１１を絶縁材１３ａにより覆っても良い。   In the case of the present embodiment, in addition to the insulating sheet 12, the slot conductor portion 11 disposed on the most opening side (inner diameter) of the slot 5 is covered with a sheet-like insulating material 13a. The reason why the innermost slot conductor portion 11 is covered with the insulating material 13a is that the creepage distance between the rotor and the tip of the tooth 6 is the shortest in the state where the rotor is disposed in the stator core 2. Therefore, when the creepage distance to the rotor or the like of the slot conductor portion 11 existing on the outer diameter side from the innermost slot conductor portion 11 becomes closer depending on the size of the motor, the plurality of slot conductor portions 11 from the innermost diameter side. May be covered with an insulating material 13a.

また、前記最内径のスロット導体部１１の開口側（内径側）側面には、シート状の絶縁材１３ｂにより周囲を覆った磁性材１４を配置している。該磁性材１４は、例えば、鉄粉等の磁性材を板状に固めたもの（鉄粉アモルファス等）で、ロータからの磁束がスロット導体部１１を通過することを抑えて、渦電流が発生することを防止するもので、磁性ウェッジと呼ばれる場合もある。   Further, a magnetic material 14 is provided on the opening side (inner diameter side) side surface of the innermost slot conductor portion 11 so as to cover the periphery with a sheet-like insulating material 13b. The magnetic material 14 is, for example, a magnetic material such as iron powder hardened in a plate shape (iron powder amorphous or the like). The magnetic material from the rotor is prevented from passing through the slot conductor portion 11 and eddy current is generated. This is sometimes called a magnetic wedge.

特に、本実施の形態の場合、前記絶縁材１３ｂにより覆われた磁性材１４を、最内径のスロット導体部１１の側面に配置した状態で、該磁性材１４と共にスロット導体部１１を前記絶縁材１３ａにより覆っている。即ち、該スロット導体部１１をスロット５に組み込む前に、スロット導体部１１の側面に絶縁材１３ｂにより覆われた磁性材１４を配置した状態で、絶縁材１３ａにより該スロット導体部１１及び磁性材１４を覆って、これら両部材１１、１４を一体として扱えるようにしている。   In particular, in the case of the present embodiment, in a state where the magnetic material 14 covered with the insulating material 13b is disposed on the side surface of the innermost slot conductor portion 11, the slot conductor portion 11 and the magnetic material 14 are connected to the insulating material. It is covered with 13a. That is, before assembling the slot conductor portion 11 into the slot 5, the magnetic conductor 14 covered with the insulating material 13b is disposed on the side surface of the slot conductor portion 11, and the slot conductor portion 11 and the magnetic material are separated by the insulating material 13a. 14 so that both members 11 and 14 can be handled as a unit.

なお、磁性材１４は、上述のようにシート状の絶縁材１３ｂにより覆う以外に、例えば、絶縁材である板状の合成樹脂を周囲に貼り付ける等しても良い。また、予め、スロット導体部１１を絶縁材１３ａにより覆った状態で、磁性材１４を配置し、更に、絶縁材１３ａにより、該スロット導体部１１及び磁性材１４を覆うようにしても良い。   In addition to covering the magnetic material 14 with the sheet-like insulating material 13b as described above, for example, a plate-shaped synthetic resin that is an insulating material may be attached to the periphery. Alternatively, the magnetic material 14 may be disposed in advance with the slot conductor portion 11 covered with the insulating material 13a, and the slot conductor portion 11 and the magnetic material 14 may be covered with the insulating material 13a.

上述のように構成することにより、スロット５の最内径に配置されるスロット導体部１１と、ロータ或はティース６の先端との絶縁を十分に図れる。また、スロット５に配置する前に、最内径に配置されるスロット導体部１１を絶縁材１３ａにより覆っているため、該スロット導体部１１とロータ或はティース６の先端との間の絶縁を、容易に行える。即ち、スロット５にスロット導体部１１を配置した後に、合成樹脂製の板材等の絶縁材を配置することは、スロット５の幅が狭い点と、通常、該絶縁材の剛性が低い点とから難しい。これに対して本実施の形態の場合には、予め、絶縁材１３ａにより覆われたスロット導体部１１をスロット５内に配置するだけであるため、この作業は容易である。   By configuring as described above, it is possible to sufficiently insulate the slot conductor portion 11 disposed at the innermost diameter of the slot 5 from the tip of the rotor or the tooth 6. Further, since the slot conductor portion 11 arranged at the innermost diameter is covered with the insulating material 13a before being arranged in the slot 5, the insulation between the slot conductor portion 11 and the tip of the rotor or the tooth 6 is obtained. Easy to do. That is, after placing the slot conductor portion 11 in the slot 5, placing an insulating material such as a synthetic resin plate is because the slot 5 has a narrow width and usually has a low rigidity. difficult. On the other hand, in the case of the present embodiment, this operation is easy because the slot conductor portion 11 covered with the insulating material 13a is simply disposed in the slot 5 in advance.

また、本実施の形態によると、予め、スロット導体部１１に磁性材１４を固定できるため、スロット５内への磁性材１４の配置を容易且つ確実に行え、該磁性材１４の配置不良が生じることを防止できる。即ち、剛性の低い磁性材１４をスロット５の開口部に後から配置する場合には、該磁性材１４が座屈する等して配置不良が生じる可能性があるが、本実施の形態の場合には、このような不具合が生じることはない。また、このように磁性材１４をスロット導体部１１に確実に固定できるため、スロット５内に配置した後、ワニスにより固着させる場合でも、固着力を安定させることができる。また、本実施の形態の場合、スロット５の開口部に磁性材１４を配置するために、該スロット５の形状を該磁性材１４を配置しない場合に比べて変更する必要がない。このため、該スロット５内に配置したコイル４を構成するスロット導体部１１と、モータを構成するロータとの距離が、磁性材等を配置するためにスロット開口部の形状を変更した、前述の各特許文献に記載された構造のように、大きくなることを防止でき、モータ出力が減少することが防止できる。   Further, according to the present embodiment, since the magnetic material 14 can be fixed to the slot conductor portion 11 in advance, the magnetic material 14 can be easily and reliably placed in the slot 5, resulting in poor placement of the magnetic material 14. Can be prevented. That is, when the low-rigidity magnetic material 14 is disposed later in the opening of the slot 5, the magnetic material 14 may buckle or the like, which may cause a placement failure. Such a problem does not occur. In addition, since the magnetic material 14 can be reliably fixed to the slot conductor portion 11 in this way, the fixing force can be stabilized even when the magnetic material 14 is fixed in the slot 5 and then fixed with a varnish. In the case of the present embodiment, since the magnetic material 14 is disposed in the opening of the slot 5, it is not necessary to change the shape of the slot 5 compared to the case where the magnetic material 14 is not disposed. For this reason, the distance between the slot conductor portion 11 constituting the coil 4 arranged in the slot 5 and the rotor constituting the motor is such that the shape of the slot opening is changed in order to arrange the magnetic material or the like. Like the structure described in each patent document, it can prevent becoming large and it can prevent that a motor output reduces.

なお、絶縁材１３ａによりスロット導体部１１を覆う部分は、少なくとも、スロット導体部１１の開口側の側面、更に、好ましくは幅方向の側面（図３の左右に存在する側面）が覆われていれば良く、必ずしも全体が覆われている必要はない。但し、スロット導体部１１への磁性材１４の固定を確実に行うと共に、絶縁性を確実に得るためには、全体を覆うことが好ましい。   The portion covering the slot conductor portion 11 with the insulating material 13a is at least covered with the side surface on the opening side of the slot conductor portion 11, and more preferably the side surface in the width direction (side surfaces existing on the left and right in FIG. 3). It does not have to be entirely covered. However, in order to securely fix the magnetic material 14 to the slot conductor portion 11 and to reliably obtain insulation, it is preferable to cover the whole.

次に、上述のように、スロット導体部１１を絶縁材１３ａにより覆う、平角線の製造装置について、図４ないし図１２により説明する。装置１５は、図４ないし図６に示すように、固定治具１６上に、押し治具１７と１対の変位治具１８ａ，１８ｂとを配置してなる。   Next, a rectangular wire manufacturing apparatus that covers the slot conductor portion 11 with the insulating material 13a as described above will be described with reference to FIGS. As shown in FIGS. 4 to 6, the device 15 includes a pressing jig 17 and a pair of displacement jigs 18 a and 18 b arranged on a fixing jig 16.

このうちの固定治具１６は、片面（図４、５の上面）に、前記スロット導体部１１の幅（前述の図３の左右方向の幅）に対応した幅を有する溝１９を形成している。該溝１９は、前記スロット導体部１１の配設方向（図６の上下方向）にも開口している。このため、絶縁材１３ａにより覆うべきスロット導体部１１の長さに拘らず、該スロット導体部１１を前記溝１９に配置可能である。また、該溝１９の深さは、該スロット導体部１１の厚さに、絶縁材１３ａを２枚重ねた厚さを足し合わせた値と、ほぼ同じとしている。   The fixing jig 16 includes a groove 19 having a width corresponding to the width of the slot conductor portion 11 (the width in the horizontal direction in FIG. 3 described above) on one surface (the upper surface in FIGS. 4 and 5). Yes. The groove 19 is also opened in the arrangement direction of the slot conductor portion 11 (up and down direction in FIG. 6). Therefore, the slot conductor portion 11 can be disposed in the groove 19 regardless of the length of the slot conductor portion 11 to be covered with the insulating material 13a. The depth of the groove 19 is substantially the same as the value obtained by adding the thickness of the slot conductor portion 11 to the thickness of two stacked insulating materials 13a.

また、前記押し治具１７は、前記固定治具１６上に前記溝１９との遠近動自在に配置されている。即ち、レバー２０を操作することにより、図４、５の上下方向に変位自在としている。また、前記押し治具１７の先端（図４、５の下端）には、前記スロット導体部１１の幅及び長さに対応した凸部２１を設けている。このような押し治具１７は、後述するように、前記スロット導体部１１を前記溝１９内に押し込むためのものである。なお、前記凸部２１の幅は、後述するように、絶縁材１３ａの幅方向両側部分を確実に立たせるために、該スロット導体部１１の幅よりも小さくすることが好ましい。   Further, the pushing jig 17 is arranged on the fixing jig 16 so as to be movable with respect to the groove 19. That is, by operating the lever 20, it can be displaced in the vertical direction of FIGS. Further, a convex portion 21 corresponding to the width and length of the slot conductor portion 11 is provided at the tip of the pushing jig 17 (the lower end in FIGS. 4 and 5). Such a pushing jig 17 is for pushing the slot conductor portion 11 into the groove 19 as will be described later. As will be described later, the width of the convex portion 21 is preferably smaller than the width of the slot conductor portion 11 in order to reliably stand the both side portions of the insulating material 13a in the width direction.

また、前記両変位治具１８ａ，１８ｂは、前記固定治具１６の片面上に、該片面に沿って前記溝１９の幅方向両側から該溝１９上を交互に通るように変位自在に配置されている。このために、それぞれの変位治具１８ａ，１８ｂを、ハンドル２２ａ，２２ｂの回転により、互いに遠近動自在に変位可能としている。このような変位機構は、例えば、ねじ機構等の周知の機構を使用可能である。   The two displacement jigs 18a and 18b are disposed on one side of the fixing jig 16 so as to be freely displaceable so as to alternately pass on the groove 19 from both sides in the width direction of the groove 19 along the one surface. ing. For this purpose, the displacement jigs 18a and 18b can be displaced in such a manner that they can move to and away from each other by the rotation of the handles 22a and 22b. As such a displacement mechanism, for example, a known mechanism such as a screw mechanism can be used.

上述のように構成される装置１５により、スロット導体部１１に絶縁材１３ａを巻き付ける（覆う）作業について、図７ないし図１２により説明する。まず、図７に示すように、絶縁材１３ａを、前記固定治具１６の片面で前記両変位治具１８ａ，１８ｂ同士の間に、前記溝１９を覆うように配置する。この状態で、該溝１９の幅方向中央と、前記絶縁材１３ａの幅方向中央とをほぼ一致させる。なお、該絶縁材１３ａの長さは、巻き付けるスロット導体部１１の長さとし、幅は、該スロット導体部１１の周囲の長さよりも大きくしている。   The operation of winding (covering) the insulating material 13a around the slot conductor portion 11 by the apparatus 15 configured as described above will be described with reference to FIGS. First, as shown in FIG. 7, the insulating material 13 a is disposed on one side of the fixing jig 16 so as to cover the groove 19 between the two displacement jigs 18 a and 18 b. In this state, the center in the width direction of the groove 19 and the center in the width direction of the insulating material 13a are substantially matched. The length of the insulating material 13a is the length of the slot conductor portion 11 to be wound, and the width is larger than the length of the periphery of the slot conductor portion 11.

そして、前記絶縁材１３ａの該溝１９と反対側（即ち、図７の上側）に、前記スロット導体部１１を配置する。この状態で、該スロット導体部１１と前記溝１９との幅方向の位相を一致させる。したがって、該スロット導体部１１は、前記絶縁材１３ａのほぼ中央に配置される。   Then, the slot conductor portion 11 is arranged on the side of the insulating material 13a opposite to the groove 19 (that is, the upper side in FIG. 7). In this state, the phase in the width direction of the slot conductor portion 11 and the groove 19 is matched. Therefore, the slot conductor portion 11 is disposed substantially at the center of the insulating material 13a.

次に、図８に示すように、前記押し治具１７を前記溝１９に近づける方向に移動させて（下降させて）、前記スロット導体部１１を該溝１９内に押し込むと共に、前記絶縁材１３ａの該スロット導体部１１よりも幅方向両側に存在する部分を該溝１９の側面に沿って立たせる。即ち、該スロット導体部１１は、前記絶縁材１３ａ上に載置されているため、該スロット導体部１１を前記溝１９内に押し込むことにより、該絶縁材１３ａの一部も該溝１９内に押し込まれる。この際、該絶縁材１３ａの前記スロット導体部１１の両側に存在する部分が、前記溝１９の側面に倣って折り曲げられ、該溝１９の側面と前記スロット導体部１１の側面との間に挟持されるように配置される。   Next, as shown in FIG. 8, the pushing jig 17 is moved (lowered) in a direction approaching the groove 19 to push the slot conductor portion 11 into the groove 19 and the insulating material 13a. The portions present on both sides in the width direction of the slot conductor portion 11 are made to stand along the side surface of the groove 19. That is, since the slot conductor portion 11 is placed on the insulating material 13 a, by pushing the slot conductor portion 11 into the groove 19, a part of the insulating material 13 a also enters the groove 19. Pushed in. At this time, portions of both sides of the slot conductor portion 11 of the insulating material 13a are bent along the side surface of the groove 19, and are sandwiched between the side surface of the groove 19 and the side surface of the slot conductor portion 11. To be arranged.

次に、図９に示すように、前記押し治具１７を前記溝１９から遠ざかる方向に移動させて（上昇させて）、該押し治具１７を前記スロット導体部１１から、少なくとも次述する変位治具１８ａの厚さ（図９の高さ）分よりも多く退避させる。次いで、図１０に示すように、同図の左側の変位治具１８ａを、前記固定治具１６の片面に沿って同図の右側に前記溝１９上を通るように変位させる。そして、前記絶縁材１３ａの立ち上がった部分のうち、図１０の左側部分を折り曲げて、該立ち上がった部分により前記スロット導体部１１の同図の上面を覆う。   Next, as shown in FIG. 9, the pushing jig 17 is moved (raised) away from the groove 19, and the pushing jig 17 is displaced from the slot conductor portion 11 at least as described below. Retreat more than the thickness of the jig 18a (height in FIG. 9). Next, as shown in FIG. 10, the displacement jig 18 a on the left side of the figure is displaced so as to pass on the groove 19 to the right side of the figure along one side of the fixing jig 16. Then, the left portion of FIG. 10 is bent among the raised portions of the insulating material 13a, and the upper portion of the slot conductor portion 11 is covered with the raised portions.

更に、図１１に示すように、同図の右側の変位治具１８ｂを、前記固定治具１６の片面に沿って同図の左側に前記溝１９上を通るように変位させると共に、前記左側の変位治具を１８ａを、該溝１９上から退避させるように、同図の左側に変位させる。そして、前記絶縁材１３ａの立ち上がった部分のうち、図１１の右側部分を折り曲げて、該立ち上がった部分により前記スロット導体部１１の上面を覆い、前述のように左側の変位治具１８ａにより折り曲げられた部分と重ねる。これにより、該スロット導体部１１が前記絶縁材１３ａにより覆われる。なお、図示の例の場合、右側の変位治具１８ｂ上に前記押し治具１７を固定しているため、該押し治具１７は該変位治具１８ｂと共に変位する。   Furthermore, as shown in FIG. 11, the displacement jig 18b on the right side of the figure is displaced along the one side of the fixing jig 16 so as to pass over the groove 19 on the left side of the figure, and The displacement jig 18a is displaced to the left side of the figure so as to retract from the groove 19. Then, of the rising portion of the insulating material 13a, the right portion of FIG. 11 is bent, the rising portion covers the upper surface of the slot conductor portion 11, and is bent by the left displacement jig 18a as described above. Overlap with the part. As a result, the slot conductor portion 11 is covered with the insulating material 13a. In the case of the illustrated example, since the pressing jig 17 is fixed on the displacement jig 18b on the right side, the pressing jig 17 is displaced together with the displacement jig 18b.

更に、図１２に示すように、前記右側の変位治具１８ｂを、前記溝１９上から退避させるように、同図の右側に変位させる。そして、前記絶縁材１３ａにより覆われた前記スロット導体部１１を前記溝１９から取り外す。なお、前述の図３に示した構造と同様に、絶縁材１３ａの端部同士が重なり合うように折り曲げることが好ましく、この場合に、一方の端部に接着剤を塗布しておけば、上述の右側の変位治具１８ｂの変位により、絶縁材１３ａの端部が重なり合った部分で接着される。但し、絶縁材１３ａの接着方法は、これに限定されるものではなく、例えば、絶縁材１３ａの端部をスロット導体部１１に直接接着させても良いし、溝１９から取り外した後、絶縁材１３ａの端部同士が重なり合った部分に、熱を加えて溶着させても良い。   Further, as shown in FIG. 12, the right displacement jig 18 b is displaced to the right in the figure so as to be retracted from the groove 19. Then, the slot conductor portion 11 covered with the insulating material 13 a is removed from the groove 19. In addition, like the structure shown in FIG. 3, it is preferable to bend the end portions of the insulating material 13a so that they overlap each other. In this case, if an adhesive is applied to one end portion, Due to the displacement of the displacement jig 18b on the right side, the end portions of the insulating material 13a are bonded at the overlapping portions. However, the bonding method of the insulating material 13a is not limited to this. For example, the end of the insulating material 13a may be directly bonded to the slot conductor portion 11, or after the insulating material 13a is removed from the groove 19, Heat may be applied to the portion where the ends of 13a overlap each other to be welded.

なお、上述の説明では、スロット導体部１１を絶縁材１３ａにより覆う構造について述べたが、上述した装置１５を使用して、スロット導体部１１と磁性材１４とを共に絶縁材１３ａにより覆うこともできる。なお、この場合、溝１９の深さを磁性材１４及び該磁性材１４とスロット導体部１１との絶縁部分を考慮した深さとする。   In the above description, the structure in which the slot conductor portion 11 is covered with the insulating material 13a has been described. However, the slot conductor portion 11 and the magnetic material 14 may be covered with the insulating material 13a using the device 15 described above. it can. In this case, the depth of the groove 19 is determined in consideration of the magnetic material 14 and the insulating portion between the magnetic material 14 and the slot conductor portion 11.

即ち、磁性材１４がすでに周囲を絶縁材１３ｂにより覆われている場合（図３参照）には、溝１９上に絶縁材１３ａを配置し、該絶縁材１３ａ上に、絶縁材１３ｂにより覆われた磁性材１４及びスロット導体部１１を、重ねて配置する。そして、押し治具１７により、該絶縁材１３ｂにより覆われた磁性材１４及びスロット導体部１１を、前記溝１９内に押し込む。その後、上述の説明と同様に、両変位治具１８ａ，１８ｂにより絶縁材１３ａを折り曲げて、前記磁性材１４及びスロット導体部１１を該絶縁材１３ａにより覆う。   That is, when the magnetic material 14 is already covered with the insulating material 13b (see FIG. 3), the insulating material 13a is disposed on the groove 19, and the insulating material 13a is covered with the insulating material 13b. The magnetic material 14 and the slot conductor portion 11 are arranged so as to overlap each other. Then, the magnetic material 14 and the slot conductor portion 11 covered with the insulating material 13 b are pushed into the groove 19 by the pushing jig 17. Thereafter, similarly to the above description, the insulating material 13a is bent by the two displacement jigs 18a and 18b, and the magnetic material 14 and the slot conductor portion 11 are covered with the insulating material 13a.

一方、磁性材１４を絶縁材により覆っていない場合には、溝１９上に配置された絶縁材上に、磁性材１４と絶縁材１３ａにより覆われたスロット導体部１１とを配置し、同様に、該磁性材１４と絶縁材１３ａにより覆われたスロット導体部１１とを、更に絶縁材により覆う。   On the other hand, when the magnetic material 14 is not covered with the insulating material, the magnetic material 14 and the slot conductor portion 11 covered with the insulating material 13a are arranged on the insulating material arranged on the groove 19, and similarly. The slot member portion 11 covered with the magnetic material 14 and the insulating material 13a is further covered with an insulating material.

なお、上述の押し治具１７及び両変位治具１８ａ，１８ｂの操作は、レバー２０及びハンドル２２ａ，２２ｂに変えて、アクチュエータにより行っても良い。この場合に、絶縁材１３ａ及びスロット導体部１１、更には磁性材１４の配置及び作業後の取り外しを自動で行えば、全工程を自動で行うことも可能になる。   The operation of the pushing jig 17 and the two displacement jigs 18a and 18b may be performed by an actuator instead of the lever 20 and the handles 22a and 22b. In this case, if the insulating material 13a and the slot conductor portion 11, and further the magnetic material 14 are automatically arranged and removed after the operation, the entire process can be automatically performed.

上述のような装置１５によると、スロット導体部１１単体、或は、磁性材１４を含めて絶縁材１３ａにより覆う作業を容易に行える。即ち、絶縁材１３ａをスロット導体部１１の周囲に沿って折り曲げる作業を、該スロット導体部１１（更には磁性材１４）を溝１９に押し込む工程と、両変位治具１８ａ，１８ｂを変位させる工程だけで、容易且つ確実に行える。また、このように、絶縁材１３ａをスロット導体部１１に沿って折り曲げるため、折り曲げ作業の際に、前記絶縁材１３ａに位置ずれやしわが生じにくく、製品不良が生じにくい。   According to the apparatus 15 as described above, the work of covering with the insulating material 13a including the slot conductor portion 11 alone or the magnetic material 14 can be easily performed. That is, the operation of bending the insulating material 13a along the periphery of the slot conductor portion 11 includes the step of pushing the slot conductor portion 11 (and magnetic material 14) into the groove 19 and the step of displacing both displacement jigs 18a and 18b. This is easy and reliable. In addition, since the insulating material 13a is bent along the slot conductor portion 11 in this way, the insulating material 13a is less likely to be displaced or wrinkled during the bending operation, and product defects are less likely to occur.

一方、上述のように絶縁材１３ａをスロット導体部１１に巻き付ける作業を手作業で行った場合、該絶縁材１３ａに位置ずれが生じ易い上に、しわが生じる可能性がある。そして、このような位置ずれやしわが生じた場合、スロット５内への挿入時に前記絶縁材１３ａが破れてしまう可能性がある。これに対して本実施の形態の装置１５により製造した場合、上述のような不具合が生じにくいため、スロット５内への挿入時に絶縁材１３ａが破れることはない。   On the other hand, when the work of winding the insulating material 13a around the slot conductor portion 11 is performed manually as described above, the insulating material 13a is likely to be displaced and wrinkles may occur. And when such a position shift and a wrinkle arise, the said insulating material 13a may be torn at the time of insertion in the slot 5. FIG. On the other hand, when manufactured by the apparatus 15 according to the present embodiment, the above-described problems are unlikely to occur, so that the insulating material 13a is not broken when inserted into the slot 5.

１ ステータ
２ ステータコア
３ マグネットワイヤ
４ コイル
５ スロット
６ ティース
７ 一端面
８ 一端側コイルエンド部
９ 他端面
１０ 他端側コイルエンド部
１１ スロット導体部
１２ 絶縁シート
１３ａ，１３ｂ 絶縁材
１４ 磁性材
１５ 装置
１６ 固定治具
１７ 押し治具
１８ａ、１８ｂ 変位治具
１９ 溝
２０ レバー
２１ 凸部
２２ａ，２２ｂ ハンドル DESCRIPTION OF SYMBOLS 1 Stator 2 Stator core 3 Magnet wire 4 Coil 5 Slot 6 Teeth 7 One end surface 8 One end side coil end part 9 Other end side 10 Other end side coil end part 11 Slot conductor part 12 Insulation sheet 13a, 13b Insulation material 14 Magnetic material 15 Device 16 Fixing jig 17 Pushing jigs 18a and 18b Displacement jig 19 Groove 20 Lever 21 Convex parts 22a and 22b Handle

Claims (6)

それぞれが略円筒状の周面に開口するように径方向に形成されたスロットを円周方向複数個所に有するステータコアと、コイルの巻線を構成し、前記各スロット内に、径方向に複数重ねた状態で配置される平角線と、を備えたステータにおいて、
前記各平角線のうち、少なくとも前記各スロットの最も開口側に位置する平角線が、その開口側側面に該平角線と絶縁した磁性材を配置した状態で、該磁性材と共に絶縁材により覆われていることを特徴とするステータ。 A stator core having a plurality of slots formed in a radial direction so as to open to a substantially cylindrical peripheral surface and a winding of a coil are configured, and a plurality of radial cores are stacked in each slot. In a stator having a flat wire arranged in a
Among the rectangular wires, at least the rectangular wire located closest to the opening of each slot is covered with an insulating material together with the magnetic material in a state in which a magnetic material insulated from the rectangular wire is disposed on the side surface of the opening. The stator is characterized by that. 前記各スロットの最も開口側に位置する平角線を含む平角線が、周囲を絶縁された前記磁性材と共に前記絶縁材により覆われている、請求項１に記載のステータ。   2. The stator according to claim 1, wherein a flat wire including a flat wire located closest to the opening of each slot is covered with the insulating material together with the magnetic material insulated around. 前記各スロットの最も開口側に位置する平角線を含む平角線が絶縁材に覆われ、該絶縁材に覆われた平角線が、前記磁性材と共に更に前記絶縁材により覆われている、請求項１に記載のステータ。   The flat wire including the flat wire located closest to the opening of each slot is covered with an insulating material, and the flat wire covered with the insulating material is further covered with the insulating material together with the magnetic material. 1. The stator according to 1. コイルの巻線を構成し、絶縁材に覆われた平角線の製造装置において、
片面に前記平角線の幅に対応した幅を有する溝を形成した固定治具と、
該平角線を該溝内に押し込むための押し治具と、
前記固定治具の片面に沿って、前記溝の幅方向両側から該溝上を交互に通るように変位する１対の変位治具と、を備え、
絶縁材を、前記固定治具の片面に前記溝を覆うように配置し、該絶縁材の該溝と反対側に前記平角線を配置し、前記押し治具により該平角線を該溝内に押し込むと共に、前記絶縁材の該平角線よりも幅方向両側に存在する部分を該溝の側面に沿って立たせ、前記両変位治具を交互に該溝上を前記固定治具の片面に沿って変位させることにより、前記絶縁材の該溝よりも突出した部分をそれぞれ折り曲げて、前記平角線を該絶縁材により覆うことを特徴とする平角線の製造装置。 In the manufacturing equipment of the flat wire that constitutes the winding of the coil and is covered with insulating material,
A fixing jig in which a groove having a width corresponding to the width of the flat wire is formed on one side;
A pushing jig for pushing the flat wire into the groove;
A pair of displacement jigs that are displaced along the one side of the fixing jig so as to alternately pass over the groove from both sides in the width direction of the groove;
An insulating material is arranged on one side of the fixing jig so as to cover the groove, the flat wire is arranged on the opposite side of the groove of the insulating material, and the flat wire is placed in the groove by the pushing jig. In addition to pushing in, the portions of the insulating material that are present on both sides in the width direction from the rectangular wire are made to stand along the side surface of the groove, and the two displacement jigs are alternately displaced on the groove along one side of the fixing jig. By doing so, the portions of the insulating material that protrude from the groove are bent, and the rectangular wire is covered with the insulating material. 片側面に周囲が絶縁された磁性材を配置した状態で、前記平角線を該磁性材と共に前記絶縁材により覆う、請求項４に記載の平角線の製造装置。   The flat wire manufacturing apparatus according to claim 4, wherein the flat wire is covered with the magnetic material together with the magnetic material in a state where a magnetic material whose periphery is insulated is arranged on one side surface. 絶縁材により覆われた平角線の片側面に磁性材を配置した状態で、該平角線を該磁性材と共に更に絶縁材により覆う、請求項４に記載の平角線の製造装置。   The rectangular wire manufacturing apparatus according to claim 4, wherein the rectangular wire is further covered with the insulating material together with the magnetic material in a state where the magnetic material is disposed on one side surface of the rectangular wire covered with the insulating material.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012077215A1 (en) * 2010-12-09 2012-06-14 株式会社 日立製作所 Vehicle ac generator
US10291106B2 (en) 2013-03-29 2019-05-14 Denso Corporation Stator, rotary electric machine provided with the stator and method of manufacturing the stator
US10333371B2 (en) 2013-01-09 2019-06-25 Denso Corporation Stator and rotating electric machine including the same

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JPH09117114A (en) * 1995-10-20 1997-05-02 Mitsubishi Electric Corp Method and device for winding coil of rotary electric machine stator
JP2003244907A (en) * 2002-02-15 2003-08-29 Nissan Motor Co Ltd Manufacturing method for motor
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012077215A1 (en) * 2010-12-09 2012-06-14 株式会社 日立製作所 Vehicle ac generator
US10333371B2 (en) 2013-01-09 2019-06-25 Denso Corporation Stator and rotating electric machine including the same
US10291106B2 (en) 2013-03-29 2019-05-14 Denso Corporation Stator, rotary electric machine provided with the stator and method of manufacturing the stator

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