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JP2007089346A - Stator for rotary electric machine - Google Patents

Stator for rotary electric machine Download PDF

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JP2007089346A
JP2007089346A JP2005276956A JP2005276956A JP2007089346A JP 2007089346 A JP2007089346 A JP 2007089346A JP 2005276956 A JP2005276956 A JP 2005276956A JP 2005276956 A JP2005276956 A JP 2005276956A JP 2007089346 A JP2007089346 A JP 2007089346A
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coil
winding
diameter side
stator
coil bobbin
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JP4106375B2 (en
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Kazuhisa Takashima
和久 高島
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a stator for a rotary electric machine that is capable of preventing coils wound around teeth adjacent to each other from interfering with each other, capable of improving productivity, while facilitating winding work, capable of improving motor efficiency by improving a coil space factor, and capable of achieving miniaturization of a motor. <P>SOLUTION: The stator for a rotary electric machine has a cylindrical stator core 1, which has yokes 1a, arranged around a central shaft and connected with each other and the teeth 1b radially protruding from each of the yokes 1a, an insulating coil bobbin 2 mounted to each of the teeth 1b, and the coils 3, respectively wound around each of the teeth 1b via a winding part of the coil bobbin 2. A coil insertion groove 4a, which is continuous to the side face vertical to the end face of the inside diameter side from the outer diameter side of the coil bobbin 2 for inserting a coil-winding start wire 3S, is formed on the end face in the central shaft direction at the winding part of the coil bobbin 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、モータなどの回転電機の固定子に関し、特に、コイルの巻線を行うコイルボビンの構造に関するものである。   The present invention relates to a stator of a rotating electrical machine such as a motor, and more particularly to a structure of a coil bobbin that performs winding of a coil.

回転電機の固定子は、中心軸の周りに円筒形状に配列され固定されたヨークとヨークから径方向へ突出したティースとを有するステータコアと、各ティースに絶縁性のコイルボビンを介して巻回し、ティース間に形成されるスロットに装着されたコイルとを有する。   A stator of a rotating electrical machine is formed by winding a stator core having a yoke arranged in a cylindrical shape around a central axis and teeth projecting radially from the yoke, and winding each tooth via an insulating coil bobbin. And a coil mounted in a slot formed therebetween.

各ティースに巻回されたコイルは、隣り合うコイルが、内径側が狭く外形側が広くなったスロット内において互いに干渉しないようにする対策が必要になる。   The coil wound around each tooth requires measures to prevent adjacent coils from interfering with each other in a slot having a narrow inner diameter side and a larger outer diameter side.

この対策として、コイルボビンの中心軸方向端面の外周部に、巻始め用のコイル挿入溝と巻終わり用のコイル挿入溝とを、コイルボビンの中央に設けられた凸部の両側に設け、コイルの巻始めを、巻始め用のコイル挿入溝に挿入し、コイルボビンの外径側から内径側に向かって１層目を巻回し、２層目をコイルボビンの内径側から外径側に向かって巻回し、巻終わり用のコイル挿入溝に挿入して巻終わりとする構造が記載されている（例えば、特許文献１参照）。   As a countermeasure, a coil insertion groove for winding start and a coil insertion groove for winding end are provided on both sides of the convex portion provided at the center of the coil bobbin on the outer peripheral portion of the end surface in the central axis direction of the coil bobbin. The beginning is inserted into the coil insertion groove for winding start, the first layer is wound from the outer diameter side of the coil bobbin toward the inner diameter side, the second layer is wound from the inner diameter side of the coil bobbin toward the outer diameter side, A structure is described in which a coil is inserted into a coil insertion groove for winding end to make the winding end (see, for example, Patent Document 1).

以上のように構成された固定子構造においては、１層目が内径側で終わり、内径側から外形側へ向かって巻回される２層目の巻始めコイルは隣り合うティースに同様に巻線されている２層目のコイルとの干渉を避けるため、少しスロットが広がった外径側に傾斜させて配置せざるを得ない。しかしながら、１層目から２層目へ傾斜した渡り線の傾斜角度が大きいと安定した巻線ができなくなるため、線径やコア形状によっては巻線が困難となる場合が発生する。   In the stator structure configured as described above, the first layer ends on the inner diameter side, and the second layer winding start coil wound from the inner diameter side toward the outer shape side is wound in the same manner on adjacent teeth. In order to avoid interference with the second layer coil, it is necessary to incline the slot toward the outer diameter side where the slot is slightly widened. However, if the inclination angle of the connecting wire inclined from the first layer to the second layer is large, stable winding cannot be performed, and winding may be difficult depending on the wire diameter and core shape.

また、ティースの中心軸方向端面の幅が小さい場合には、コイルボビンの軸方向端面に渡り線を設けることができなくなる場合も発生し、その場合は、ティースの軸方向端面と垂直な側面側で渡り線を構成することとなり、側面側での渡り線の場合、コイルボビンの最内径から渡り線が巻かれるため、隣り合うティースの渡り線とコイルが干渉するようになる。この不具合を改善するには、隣り合う渡り線とコイルとが干渉しないように、巻数を少なくする、コイル線径を細くして同じ巻数にするなどの処置が必要となり、その結果、スロット内におけるコイルの占積率が低下してモータ効率も低下する。   In addition, when the width of the end surface in the central axial direction of the teeth is small, it may not be possible to provide a crossover on the axial end surface of the coil bobbin. In this case, the side surface perpendicular to the axial end surface of the teeth In the case of a connecting wire on the side surface side, since the connecting wire is wound from the innermost diameter of the coil bobbin, the connecting wire of adjacent teeth interferes with the coil. In order to remedy this problem, measures such as reducing the number of turns and reducing the coil wire diameter to the same number of turns are necessary so that adjacent crossover wires and coils do not interfere with each other. The coil space factor is reduced and the motor efficiency is also reduced.

また、１層目の巻線をコイルボビンの内径側から開始し、１層目の巻き終わりから２層目の巻始めの渡り線を巻線スペースが広いコイルボビンの外径側に近い位置とすることが有効であるが、コイルボビンの内径側には回転子があり、その回転軸方向の長さは概ね同等か長いことが多いため、巻始めの部分を係止する係止部、給電部をコイルボビンの内径側に設けるスペースを確保することは困難であった。   Also, start winding of the first layer from the inner diameter side of the coil bobbin, and make the connecting wire from the end of winding of the first layer to the start of winding of the second layer close to the outer diameter side of the coil bobbin having a large winding space However, there is a rotor on the inner diameter side of the coil bobbin, and the length in the direction of the rotation axis is generally the same or long. It was difficult to secure a space provided on the inner diameter side of the.

特許第３４９８１２９号公報（第２−３頁、図１−７）Japanese Patent No. 3498129 (page 2-3, FIG. 1-7)

上述のように、隣り合うティースに巻線されたコイル同士の干渉を防ぐようにするためには、従来の回転電機の固定子では、巻線作業が困難になる、巻線スペースを有効利用できずコイルの占積率が低下してモータ効率が低下する、また、モータ効率を低下させないようにするためには回転電機が大型化するという問題があった。   As described above, in order to prevent interference between coils wound around adjacent teeth, the winding space can be effectively used with the stator of the conventional rotating electric machine, which makes winding work difficult. Therefore, there is a problem in that the space factor of the coil is reduced to lower the motor efficiency, and the rotating electric machine is increased in size so as not to lower the motor efficiency.

本発明は、上記のような問題点を解決するためになされたものであり、隣り合うティースに巻線されたコイル同士の干渉を防ぐことができ、かつ、巻線作業が容易で生産性が向上され、コイルの占積率を向上させてモータ効率が向上し、また、モータ効率が向上した分だけ小型化ができる回転電機の固定子を提供することを目的とするものである。   The present invention has been made to solve the above-described problems, and can prevent interference between coils wound around adjacent teeth, and can easily perform winding work and increase productivity. It is an object of the present invention to provide a stator for a rotating electrical machine that is improved, improves the space factor of the coil, improves the motor efficiency, and can be reduced in size as the motor efficiency is improved.

本発明に係る回転電機の固定子は、中心軸の回りに配列され相互に連結されたヨークおよび上記ヨークそれぞれから径方向へ突出したティースを有する円筒形状のステータコアと、上記ティースそれぞれに装着された絶縁性のコイルボビンと、上記コイルボビンの巻線部を介して上記ティースそれぞれに巻回されたコイルとを有する回転電機の固定子において、
上記コイルボビンの巻線部における上記中心軸方向端面に、上記コイルボビンの外径側から内径側の上記端面と垂直な側面へと通じる上記コイルの巻始め線を挿入するためのコイル挿入溝を形成したものである。 A stator of a rotating electrical machine according to the present invention is mounted on each of the teeth, a yoke arranged around a central axis and connected to each other, and a cylindrical stator core having teeth projecting radially from each of the yokes. In a stator of a rotating electrical machine having an insulating coil bobbin and a coil wound around each of the teeth via a winding portion of the coil bobbin,
A coil insertion groove for inserting the coil winding start line leading from the outer diameter side of the coil bobbin to the side surface perpendicular to the end face on the inner diameter side is formed on the end surface in the central axis direction of the winding portion of the coil bobbin. Is.

本発明に係る回転電機の固定子によれば、コイルの巻始めをスペースに余裕のあるコイルボビンの外周で係止することができ、かつ、コイルを内径側から外径側に向かって巻回し、渡り線をコイルボビンの外径側に位置させることができるので、隣り合うティースのコイル同士が干渉し合うのを防止すると共に、巻線作業を容易にし、スロット内におけるコイルの占積率を向上させることができる。   According to the stator of the rotating electrical machine according to the present invention, the winding start of the coil can be locked on the outer periphery of the coil bobbin with a sufficient space, and the coil is wound from the inner diameter side toward the outer diameter side, Since the connecting wire can be positioned on the outer diameter side of the coil bobbin, it is possible to prevent the coils of adjacent teeth from interfering with each other, facilitate the winding work, and improve the space factor of the coil in the slot. be able to.

実施の形態１．
図１は、本発明に係る実施の形態１における回転電機の固定子を軸方向端面から見た平面図、図２は、１個のコア、コイルボビンおよびコイルを軸方向端面から見た平面図、図３は、図２（ｃ）のＡ−Ａ断面図、図４は、巻線を完了した状態（本例ではコイル層数３とする）でコア２個を軸方向端面から見た平面図である。 Embodiment 1 FIG.
FIG. 1 is a plan view of a stator of a rotating electric machine according to Embodiment 1 of the present invention as viewed from an axial end surface, and FIG. 2 is a plan view of one core, a coil bobbin, and a coil as viewed from the axial end surface; 3 is a cross-sectional view taken along line AA in FIG. 2C, and FIG. 4 is a plan view of two cores as viewed from the axial end face in a state where the winding is completed (in this example, the number of coil layers is 3). It is.

図１に示したように、本発明に係る回転電機の固定子のステータコアは、複数のコアを中心軸の周りに円筒状に連結してなる。コア１は、円筒状に配列され連結されたヨーク１ａと、ヨーク１ａから径方向に突出したティース１ｂを備え、ティース１ｂには絶縁性のコイルボビン２が装着され、コイルボビン２の巻線部を介してコイル３が巻回されている。   As shown in FIG. 1, the stator core of the stator of the rotating electrical machine according to the present invention is formed by connecting a plurality of cores in a cylindrical shape around the central axis. The core 1 includes a yoke 1a arranged and connected in a cylindrical shape, and a tooth 1b protruding in a radial direction from the yoke 1a. An insulating coil bobbin 2 is attached to the tooth 1b, and the coil bobbin 2 has a winding portion interposed therebetween. The coil 3 is wound around.

図２（ａ）に示したように、コイルボビン２の巻線部には、その端面（ステータコアの中心軸方向端面）において、最外径の突起部（巻始めコイルの係止部）２ｃの一側面からコイルボビン２の巻線部の最内径に至り、最内径においてコイルボビンの側面２ｂ（端面と垂直な面）側に通じるように形成された巻始め用のコイル挿入溝４ａを有する。図２（ｂ）に示したように、巻始めのコイルである巻始め線３Ｓはコイルボビン２の巻線部の外径側から開始され、巻始め用のコイル挿入溝４ａを通って、コイルボビンの側面２ｂの巻線部の最内径の位置から順次外径側に向けて巻線され、図２（ｃ）に示したように、１層目の巻終わりがコイルボビンの側面２ａの最外径に近い位置に巻線された時点で１層目の巻線が完了する。１層目のコイルの巻終わりから２層目のコイルの巻始めへの渡り線５をコイルボビン２の外径側に近い位置として２層目の巻線を開始し、コイルボビン２の巻線部の外径側から順次内径側に巻線する。３層目の巻線はコイルボビンの内径側から外径側に巻線する。巻線層数が４層以上の場合も同様で、奇数層目のコイル３がコイルボビン２の内径側から外径側に巻線され、偶数層目がコイルボビン２の外径側から内径側に巻線される。巻始め線３Ｓと１層目のコイルの関係は、図３に示したように、巻始め線３Ｓの上面（反コア側）に１層目のコイルが配置された状態となっている。   As shown in FIG. 2A, the winding portion of the coil bobbin 2 has one of the outermost protrusions (winding coil locking portions) 2c on the end surface (end surface in the central axis direction of the stator core). A coil insertion groove 4a for starting winding is formed so as to reach the innermost diameter of the winding portion of the coil bobbin 2 from the side surface and communicate with the side surface 2b (surface perpendicular to the end surface) of the coil bobbin at the innermost diameter. As shown in FIG. 2B, the winding start wire 3S, which is the coil at the beginning of winding, starts from the outer diameter side of the winding portion of the coil bobbin 2, passes through the coil insertion groove 4a for winding start, Winding is sequentially performed from the position of the innermost diameter of the winding portion of the side surface 2b toward the outer diameter side, and as shown in FIG. 2C, the winding end of the first layer is set to the outermost diameter of the side surface 2a of the coil bobbin. When it is wound at a close position, the first layer winding is completed. The connecting wire 5 from the winding end of the first layer coil to the winding start of the second layer coil is positioned close to the outer diameter side of the coil bobbin 2, and the second layer winding is started. Wind from the outer diameter side to the inner diameter side sequentially. The third layer winding is wound from the inner diameter side to the outer diameter side of the coil bobbin. The same applies when the number of winding layers is four or more. The odd-numbered coil 3 is wound from the inner diameter side to the outer diameter side of the coil bobbin 2, and the even layer is wound from the outer diameter side to the inner diameter side of the coil bobbin 2. Lined. As shown in FIG. 3, the relationship between the winding start wire 3 </ b> S and the first layer coil is such that the first layer coil is disposed on the upper surface (on the anti-core side) of the winding start wire 3 </ b> S.

以上のように構成された本実施の形態１の固定子では、コイルボビン２の巻線部の中心軸方向端面において、外径側から内径側の側面に通ずる巻始め用のコイル挿入溝４ａが形成されているため、コイル３の巻始めをスペースに余裕のあるコイルボビン２の外周で巻始めのコイルを係止することができ、かつ、コイル３を内径側から外径側に向かって巻回し、渡り線５をコイルボビン２の外径側に位置させることができるので、隣り合うティースのコイル同士が干渉し合うのを防止すると共に、巻線作業を容易にし、スロット内におけるコイル３の占積率を向上させることができる。   In the stator according to the first embodiment configured as described above, the coil insertion groove 4a for starting winding is formed on the end surface in the central axis direction of the winding portion of the coil bobbin 2 from the outer diameter side to the inner diameter side surface. Therefore, the winding start coil can be locked on the outer periphery of the coil bobbin 2 with a sufficient space, and the coil 3 is wound from the inner diameter side toward the outer diameter side. Since the crossover wire 5 can be positioned on the outer diameter side of the coil bobbin 2, it is possible to prevent the coils of adjacent teeth from interfering with each other and to facilitate winding work, and the space factor of the coil 3 in the slot Can be improved.

また、コイル３の巻始め線３Ｓをコイル挿入溝４ａに挿入することにより、コイル３の巻始め線３Ｓを確実に固定することができる。   Further, by inserting the winding start wire 3S of the coil 3 into the coil insertion groove 4a, the winding start wire 3S of the coil 3 can be reliably fixed.

また、コイルボビンの外径側から１層目をコイルボビンの側面２ｂの内径方向の途中まで巻回した場合は、２層目を巻回したときに１層目の整列状態が崩れる、あるいは巻線スペースが有効に活用されないという問題があるが、１層目をコイルボビンの側面２ｂの巻線部の最内径の位置から順次外径側に向かって最外径近辺まで巻線するようにすることにより、２層目を安定に、かつ、巻線スペースを有効に活用して効率よく１層目の上に巻回することができる。   Further, when the first layer is wound from the outer diameter side of the coil bobbin to the middle of the inner surface of the side surface 2b of the coil bobbin, the alignment state of the first layer is lost when the second layer is wound, or the winding space However, by winding the first layer from the position of the innermost diameter of the winding part of the side surface 2b of the coil bobbin to the outer diameter side in order, the first layer is wound. The second layer can be stably wound on the first layer efficiently using the winding space effectively.

また、１層目から２層目への渡り線５を外径側とし、外径側から内径側へ２層目を巻回するようにしたので、渡り線５の傾斜角度θ１を最小限小さくして巻線することができ、巻線した渡り線５が安定し、巻線作業が容易になる。   Further, since the connecting wire 5 from the first layer to the second layer is on the outer diameter side and the second layer is wound from the outer diameter side to the inner diameter side, the inclination angle θ1 of the connecting wire 5 is minimized. Thus, the wound connecting wire 5 is stabilized, and the winding work is facilitated.

また、これらの巻線方法では１層目から２層目への渡り線５をスペース（スロット）が広い外径側に配置するようにしたので、ティース１ｂ間において隣り合うティース１ｂの渡り線５とコイル３とが干渉しないようにし、かつ、巻線スペースを有効に利用できるので、スロット内におけるコイル３の占積率が向上し、モータ効率も向上する。また、モータ効率が向上した分、回転電機の体格を小型化することができる。   In these winding methods, the connecting wire 5 from the first layer to the second layer is arranged on the outer diameter side where the space (slot) is wide, so that the connecting wire 5 between adjacent teeth 1b between the teeth 1b. And the coil 3 can be prevented from interfering with each other and the winding space can be used effectively, so that the space factor of the coil 3 in the slot is improved and the motor efficiency is also improved. Moreover, the physique of a rotary electric machine can be reduced in size by the improvement in motor efficiency.

実施の形態２．
図５は、本発明に係る実施の形態２における回転電機の固定子を軸方向端面から見た平面図、図６は図５の側面図である。図５および図６に示したように、本実施の形態２では１層目から２層目への渡り線５がコイルボビン２の側面にあり、渡り線５の位置以外は上記実施の形態１と同様の構造である。 Embodiment 2. FIG.
5 is a plan view of the stator of the rotating electrical machine according to the second embodiment of the present invention as seen from the axial end surface, and FIG. 6 is a side view of FIG. As shown in FIGS. 5 and 6, in the second embodiment, the connecting wire 5 from the first layer to the second layer is on the side surface of the coil bobbin 2, except for the position of the connecting wire 5. Similar structure.

以上のように構成された本実施の形態２の固定子では、上記実施の形態１と同様、コイルボビン２の巻線部の中心軸方向端面において、外径側から内径側の側面に通ずる巻始め用のコイル挿入溝４ａが形成されているため、コイル３の巻始めをスペースに余裕のあるコイルボビン２の外周で巻始めのコイルを係止することができ、かつ、コイル３を内径側から外径側に向かって巻回し、渡り線５をコイルボビン２の外径側に位置させることができるので、隣り合うティースのコイル同士が干渉し合うのを防止すると共に、巻線作業を容易にし、スロット内におけるコイル３の占積率を向上させることができる。   In the stator according to the second embodiment configured as described above, similarly to the first embodiment, on the end surface in the central axis direction of the winding portion of the coil bobbin 2, the winding starts from the outer diameter side to the inner diameter side surface. Since the coil insertion groove 4a is formed, the winding start coil can be locked on the outer periphery of the coil bobbin 2 with sufficient space, and the coil 3 can be removed from the inner diameter side. Winding toward the radial side, and the crossover 5 can be positioned on the outer diameter side of the coil bobbin 2, so that the coils of adjacent teeth are prevented from interfering with each other, and the winding work is facilitated. The space factor of the coil 3 can be improved.

また、コイル３の巻始め線３Ｓをコイル挿入溝４ａに挿入することにより、コイル３の巻始め線３Ｓを確実に固定することができる。   Further, by inserting the winding start wire 3S of the coil 3 into the coil insertion groove 4a, the winding start wire 3S of the coil 3 can be reliably fixed.

また、コイルボビンの外径側から１層目をコイルボビンの側面２ｂの内径方向の途中まで設けた場合は、２層目を巻回したときに１層目の整列状態が崩れる、あるいは巻線スペースが有効に活用されないという問題があるが、１層目をコイルボビンの側面２ｂの巻線部の最内径の位置から順次外径側に向かって最外径近辺まで巻線するようにすることにより、２層目を安定に、かつ、巻線スペースを有効に活用して効率よく１層目の上に巻回することができる。   If the first layer from the outer diameter side of the coil bobbin is provided partway along the inner diameter direction of the side surface 2b of the coil bobbin, the alignment state of the first layer is lost when the second layer is wound, or there is a winding space. Although there is a problem that it is not used effectively, by winding the first layer from the position of the innermost diameter of the winding portion of the side surface 2b of the coil bobbin sequentially toward the outer diameter side to the vicinity of the outermost diameter, 2 It is possible to wind the layer on the first layer efficiently and effectively using the winding space.

また、１層目から２層目への渡り線５を外径側とし、外径側から内径側へ２層目を巻回するようにしたので、渡り線５の傾斜角度θ２を最小限小さくして巻線することができ、巻線した渡り線５が安定し、巻線作業が容易になる。   Further, since the connecting wire 5 from the first layer to the second layer is on the outer diameter side and the second layer is wound from the outer diameter side to the inner diameter side, the inclination angle θ2 of the connecting wire 5 is minimized. Thus, the wound connecting wire 5 is stabilized, and the winding work is facilitated.

また、これらの巻線方法では１層目から２層目への渡り線５をスペース（スロット）が広い外径側に配置するようにしたので、ティース１ｂ間において隣り合うティース１ｂの渡り線５とコイル３とが干渉しないようにし、かつ、巻線スペースを有効に利用できるので、スロット内におけるコイル３の占積率が向上し、モータ効率も向上する。また、モータ効率が向上した分、回転電機の体格を小型化することができる。   In these winding methods, the connecting wire 5 from the first layer to the second layer is arranged on the outer diameter side where the space (slot) is wide, so that the connecting wire 5 between adjacent teeth 1b between the teeth 1b. And the coil 3 can be prevented from interfering with each other and the winding space can be used effectively, so that the space factor of the coil 3 in the slot is improved and the motor efficiency is also improved. Moreover, the physique of a rotary electric machine can be reduced in size by the improvement in motor efficiency.

実施の形態３．
図７は、本発明に係る実施の形態３における回転電機の固定子を軸方向端面から見た平面図、図８は図７のＡ−Ａ断面図である。図７および図８に示したように、本実施の形態３では、コイルボビン２の巻線部の外径側近辺と内径側の側面近辺においてコイルの巻始め線３Ｓの線径と同程度であり、外径側近辺と内径側の側面近辺との間においてコイルの巻始め線３Ｓの線径より大きくなっている。 Embodiment 3 FIG.
FIG. 7 is a plan view of the stator of the rotating electrical machine according to the third embodiment of the present invention as viewed from the axial end surface, and FIG. As shown in FIGS. 7 and 8, in the present third embodiment, the wire diameter of the coil winding start wire 3S is approximately the same as that of the coil bobbin 2 near the outer diameter side and the side surface on the inner diameter side. The wire diameter of the coil winding start wire 3S is larger between the vicinity of the outer diameter side and the vicinity of the side surface on the inner diameter side.

以上のように構成された本実施の形態３における固定子では、上記実施の形態１と同様の効果が得られることに加えて、コイルボビン２を軽量化することができる。   In the stator according to the third embodiment configured as described above, the coil bobbin 2 can be reduced in weight in addition to obtaining the same effects as those of the first embodiment.

実施の形態４．
図９は、本発明に係る実施の形態４における回転電機の固定子を軸方向端面から見た平面図である。図９に示したように、本実施の形態例では、コイルボビンの側面２ａの最内径部から順次外径に向かって巻線されるよう、巻始め用のコイル挿入溝４ａを設け、１層目の巻終わりがコイルボビンの側面２ｂの最外径部に巻線されるようにし、これ以外は実施の形態１と同様の構造としている。 Embodiment 4 FIG.
FIG. 9 is a plan view of the stator of the rotating electrical machine according to the fourth embodiment of the present invention as viewed from the end face in the axial direction. As shown in FIG. 9, in this embodiment, a coil insertion groove 4a for starting winding is provided so as to be wound sequentially from the innermost diameter portion of the side surface 2a of the coil bobbin toward the outer diameter. The winding end is wound around the outermost diameter portion of the side surface 2b of the coil bobbin, and the other structure is the same as in the first embodiment.

以上のように構成された本実施の形態４の固定子では、コイルボビン２の巻線部の中心軸方向端面において、外径側から内径側の側面に通ずる巻始め用のコイル挿入溝４ａが形成されているため、コイル３の巻始めをスペースに余裕のあるコイルボビン２の外周で巻始めのコイルを係止することができ、かつ、コイル３を内径側から外径側に向かって巻回し、渡り線５をコイルボビン２の外径側に位置させることができるので、隣り合うティースのコイル同士が干渉し合うのを防止すると共に、巻線作業を容易にし、スロット内におけるコイル３の占積率を向上させることができる。   In the stator of the fourth embodiment configured as described above, the coil insertion groove 4a for starting winding is formed on the end surface in the central axis direction of the winding portion of the coil bobbin 2 from the outer diameter side to the inner diameter side surface. Therefore, the winding start coil can be locked on the outer periphery of the coil bobbin 2 with a sufficient space, and the coil 3 is wound from the inner diameter side toward the outer diameter side. Since the crossover wire 5 can be positioned on the outer diameter side of the coil bobbin 2, it is possible to prevent the coils of adjacent teeth from interfering with each other and to facilitate winding work, and the space factor of the coil 3 in the slot Can be improved.

また、コイル３の巻始め線３Ｓをコイル挿入溝４ａに挿入することにより、コイル３の巻始め線３Ｓを確実に固定することができる。   Further, by inserting the winding start wire 3S of the coil 3 into the coil insertion groove 4a, the winding start wire 3S of the coil 3 can be reliably fixed.

また、コイルボビンの外径側から１層目をコイルボビンの側面２ｂの内径方向の途中まで設けた場合は、２層目を巻回したときに１層目の整列状態が崩れる、あるいは巻線スペースが有効に活用されないという問題があるが、１層目をコイルボビンの側面２ｂの巻線部の最内径の位置から順次外径側に向かって最外径近辺まで巻線するようにすることにより、２層目を安定に、かつ、巻線スペースを有効に活用して効率よく１層目の上に巻回することができる。   If the first layer from the outer diameter side of the coil bobbin is provided partway along the inner diameter direction of the side surface 2b of the coil bobbin, the alignment state of the first layer is lost when the second layer is wound, or there is a winding space. Although there is a problem that it is not used effectively, by winding the first layer from the position of the innermost diameter of the winding portion of the side surface 2b of the coil bobbin sequentially toward the outer diameter side to the vicinity of the outermost diameter, 2 It is possible to wind the layer on the first layer efficiently and effectively using the winding space.

また、１層目から２層目への渡り線５を外径側とし、外径側から内径側へ２層目を巻回するようにしたので、渡り線５の傾斜角度を最小限小さくして巻線することができ、巻線した渡り線５が安定し、巻線作業が容易になる。   In addition, since the connecting wire 5 from the first layer to the second layer is on the outer diameter side and the second layer is wound from the outer diameter side to the inner diameter side, the inclination angle of the connecting wire 5 is minimized. Winding and the crossover wire 5 that has been wound are stabilized, and the winding work is facilitated.

また、これらの巻線方法では１層目から２層目への渡り線５をスペース（スロット）が広い外径側に配置するようにしたので、ティース１ｂ間において隣り合うティース１ｂの渡り線５とコイル３とが干渉しないようにし、かつ、巻線スペースを有効に利用できるので、スロット内におけるコイル３の占積率が向上し、モータ効率も向上する。また、モータ効率が向上した分、回転電機の体格を小型化することができる。   In these winding methods, the connecting wire 5 from the first layer to the second layer is arranged on the outer diameter side where the space (slot) is wide, so that the connecting wire 5 between adjacent teeth 1b between the teeth 1b. And the coil 3 can be prevented from interfering with each other and the winding space can be used effectively, so that the space factor of the coil 3 in the slot is improved and the motor efficiency is also improved. Moreover, the physique of a rotary electric machine can be reduced in size by the improvement in motor efficiency.

本発明に係る回転電機の固定子は、一般の回転電機に利用することができ、特に、自動車等の車両用の回転電機に有効に利用することができる。   The stator of a rotating electrical machine according to the present invention can be used for a general rotating electrical machine, and can be effectively used for a rotating electrical machine for a vehicle such as an automobile.

本発明に係る実施の形態１における回転電機の固定子を軸方向端面から見た平面図である。It is the top view which looked at the stator of the rotary electric machine in Embodiment 1 which concerns on this invention from the axial direction end surface. 実施の形態１における１個のコア、コイルボビンおよびコイルを軸方向端面から見た平面図である。FIG. 3 is a plan view of one core, a coil bobbin, and a coil according to the first embodiment when viewed from an axial end surface. 図２（ｃ）のＡ−Ａ断面図である。It is AA sectional drawing of FIG.2 (c). 実施の形態１において、巻線を完了した状態を軸方向端面から見た平面図である。In Embodiment 1, it is the top view which looked at the state which completed the coil | winding from the axial direction end surface. 本発明に係る実施の形態２における回転電機の固定子を軸方向端面から見た平面図である。It is the top view which looked at the stator of the rotary electric machine in Embodiment 2 which concerns on this invention from the axial direction end surface. 図５の側面図である。FIG. 6 is a side view of FIG. 5. 本発明に係る実施の形態３における回転電機の固定子を軸方向端面から見た平面図である。It is the top view which looked at the stator of the rotary electric machine in Embodiment 3 which concerns on this invention from the axial direction end surface. 図７のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 本発明に係る実施の形態４における回転電機の固定子を軸方向端面から見た平面図である。It is the top view which looked at the stator of the rotary electric machine in Embodiment 4 which concerns on this invention from the axial direction end surface.

符号の説明Explanation of symbols

１ コア、１ａ ヨーク、１ｂ ティース、２ コイルボビン、
２ａ，２ｂ コイルボビンの側面、２ｃ 突起（係止部）、３ コイル、
３Ｓ 巻始め線、４ａ 巻始め用のコイル挿入溝、５ 渡り線。 1 core, 1a yoke, 1b teeth, 2 coil bobbin,
2a, 2b Coil bobbin side surface, 2c protrusion (locking portion), 3 coil,
3S winding start wire, 4a coil insertion groove for winding start, 5 crossover wire.

Claims (5)

中心軸の回りに配列され相互に連結されたヨークおよび上記ヨークそれぞれから径方向へ突出したティースを有する円筒形状のステータコアと、上記ティースそれぞれに装着された絶縁性のコイルボビンと、上記コイルボビンの巻線部を介して上記ティースそれぞれに巻回されたコイルとを有する回転電機の固定子において、
上記コイルボビンの巻線部における上記中心軸方向端面に、上記コイルボビンの外径側から内径側の上記端面と垂直な側面へと通じる上記コイルの巻始め線を挿入するためのコイル挿入溝を形成したことを特徴とする回転電機の固定子。 A yoke arranged around a central axis and connected to each other, a cylindrical stator core having teeth projecting radially from each of the yokes, an insulating coil bobbin mounted on each of the teeth, and a winding of the coil bobbin In a stator of a rotating electric machine having a coil wound around each of the teeth via a part,
A coil insertion groove for inserting the coil winding start line leading from the outer diameter side of the coil bobbin to the side surface perpendicular to the end face on the inner diameter side is formed on the end surface in the central axis direction of the winding portion of the coil bobbin. A stator of a rotating electrical machine. 上記コイル挿入溝は上記コイルボビンの巻線部の外径側から最内径の上記端面と垂直な側面へと通じるように形成され、上記コイルの１層目は、上記コイル挿入溝に挿入された後、上記コイルボビンの巻線部の最内径から外径側へ向かって巻回されていることを特徴とする請求項１記載の回転電機の固定子。 The coil insertion groove is formed so as to lead from the outer diameter side of the winding portion of the coil bobbin to the side surface perpendicular to the end surface of the innermost diameter, and the first layer of the coil is inserted into the coil insertion groove The stator of a rotating electric machine according to claim 1, wherein the coil bobbin is wound from the innermost diameter of the winding portion toward the outer diameter side. 上記コイルの１層目の巻終わりから２層目の巻始めへの渡り線を上記コイルボビンの巻線部の外径側に近い位置とし、上記２層目を外径側から内径側へ向かって巻回したことを特徴とする請求項２記載の回転電機の固定子。 The connecting wire from the winding end of the first layer of the coil to the winding start of the second layer is positioned close to the outer diameter side of the winding portion of the coil bobbin, and the second layer is directed from the outer diameter side toward the inner diameter side. The stator for a rotating electric machine according to claim 2, wherein the stator is wound. 上記コイルの巻始め線が上記コイル挿入溝に挿入された後、上記コイルの奇数層目が上記コイルボビンの巻線部の内径側から外径側に向かって巻線され、上記コイルの偶数層目が上記コイルボビンの巻線部の外径側から内径側に向かって巻線されていることを特徴とする請求項１記載の回転電機の固定子。 After the winding start line of the coil is inserted into the coil insertion groove, the odd layer of the coil is wound from the inner diameter side to the outer diameter side of the winding portion of the coil bobbin, and the even layer of the coil The stator of the rotating electrical machine according to claim 1, wherein the coil bobbin is wound from the outer diameter side toward the inner diameter side of the winding portion of the coil bobbin. 上記コイル挿入溝の幅は、上記コイルボビンの巻線部の外径側近辺と内径側の側面近辺において上記コイルの巻始め線の線径と同程度であり、上記外径側近辺と内径側の側面近辺との間において上記コイルの巻始め線の線径より大きくなっていることを特徴とする請求項１記載の回転電機の固定子。 The width of the coil insertion groove is approximately the same as the wire diameter of the coil winding start wire in the vicinity of the outer diameter side and the inner diameter side of the winding portion of the coil bobbin. The stator for a rotating electrical machine according to claim 1, wherein the stator has a diameter larger than a wire diameter of a winding start wire of the coil between the vicinity of the side surfaces.
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JP2007221882A (en) * 2006-02-15 2007-08-30 Td Drive:Kk Core module and bobbin of stator
JP2009268231A (en) * 2008-04-24 2009-11-12 Tamagawa Seiki Co Ltd Coil insulating structure for resolver
JP2010161892A (en) * 2009-01-09 2010-07-22 Mitsubishi Electric Corp Winding method for stator, insulator, stator for motor, and motor
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JP2013153589A (en) * 2012-01-25 2013-08-08 Denso Corp Stator, and method for manufacturing stator
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CN111953112A (en) * 2020-08-05 2020-11-17 珠海凯邦电机制造有限公司 Winding framework and motor stator
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JP2006187073A (en) * 2004-12-27 2006-07-13 Ichinomiya Denki:Kk Insulator, stator, and motor

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WO2004038893A1 (en) * 2002-10-22 2004-05-06 Mitsubishi Denki Kabushiki Kaisha Rotor for dynamo-electric machine
JP2006187073A (en) * 2004-12-27 2006-07-13 Ichinomiya Denki:Kk Insulator, stator, and motor

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JP2007221882A (en) * 2006-02-15 2007-08-30 Td Drive:Kk Core module and bobbin of stator
US8288912B2 (en) * 2007-06-22 2012-10-16 Robert Bosch Gmbh Electromagnetically excitable coil
US20110156523A1 (en) * 2007-06-22 2011-06-30 Michael Kljaic Electromagnetically excitable coil
JP2009268231A (en) * 2008-04-24 2009-11-12 Tamagawa Seiki Co Ltd Coil insulating structure for resolver
JP2010161892A (en) * 2009-01-09 2010-07-22 Mitsubishi Electric Corp Winding method for stator, insulator, stator for motor, and motor
EP2355308A2 (en) 2010-02-08 2011-08-10 Shinano Kenshi Kabushiki Kaisha Electric motor
CN102158036A (en) * 2010-02-08 2011-08-17 信浓绢糸株式会社 Electric motor
US8492949B2 (en) 2010-02-08 2013-07-23 Shinano Kenshi Kabushiki Kaisha Electric motor
JP2013153589A (en) * 2012-01-25 2013-08-08 Denso Corp Stator, and method for manufacturing stator
US10008896B2 (en) 2015-02-18 2018-06-26 Mitsubishi Electric Corporation Rotary electric machine and insulator for rotary electric machine
WO2016177500A1 (en) * 2015-05-06 2016-11-10 Robert Bosch Gmbh Winding tooth of an electric machine
CN111357173A (en) * 2017-11-22 2020-06-30 日立汽车系统株式会社 Rotating electric machine and stator
CN111953112A (en) * 2020-08-05 2020-11-17 珠海凯邦电机制造有限公司 Winding framework and motor stator
CN113872347A (en) * 2021-09-26 2021-12-31 河北新四达电机股份有限公司 Stator single-tooth structure and assembled stator
CN113872347B (en) * 2021-09-26 2024-02-02 河北新四达电机股份有限公司 Stator single tooth structure and assembled stator

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