JP6784242B2 - Coil twister - Google Patents

Coil twister Download PDF

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JP6784242B2
JP6784242B2 JP2017149342A JP2017149342A JP6784242B2 JP 6784242 B2 JP6784242 B2 JP 6784242B2 JP 2017149342 A JP2017149342 A JP 2017149342A JP 2017149342 A JP2017149342 A JP 2017149342A JP 6784242 B2 JP6784242 B2 JP 6784242B2
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layer
coil end
annular
coil
outer peripheral
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JP2019030164A (en
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哲典 松田
哲典 松田
平子 勝
勝 平子
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Toyota Motor Corp
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Description

本発明は、コイル捻り装置に関する。 The present invention relates to a coil twisting device.

同心円状に並ぶ複数の環状層と、当該複数の環状層から軸方向に延びる複数のコイル端部とを備える円環状ステータコアがある。隣接する環状層のうち、外側の環状層及び内側環状層のコイル端部同士が、捻り成形によって、突き合わされた後、接合される。このような捻り成形の一例が、特許文献1に開示されている。 There is an annular stator core including a plurality of annular layers arranged concentrically and a plurality of coil ends extending axially from the plurality of annular layers. Of the adjacent annular layers, the coil ends of the outer annular layer and the inner annular layer are abutted by twist forming and then joined. An example of such twist molding is disclosed in Patent Document 1.

特開2004−282947号公報Japanese Unexamined Patent Publication No. 2004-282947

このような捻り成形においてコイルが交差した場合、互いに隣接する層のコイル端部同士が干渉し、コイルのエナメルが剥離することがあった。 When the coils intersect in such twist forming, the coil ends of adjacent layers may interfere with each other and the enamel of the coil may peel off.

このようなコイル捻り装置の一例として、図5に示すコイル捻り装置900がある。コイル捻り装置900は、円筒状のガイド90と、第1の環状層91と、第2の環状層92とを備える。第1の環状層91、及び第2の環状層92が、軸方向に(ここでは、Z軸方向プラス側)に延びるコイル端部W91、コイル端部W92をそれぞれ把持したまま、第1の環状層91と第2の環状層92とを、互いに逆方向に回転させる。すると、コイル端部W91、及びコイル端部W92を捻り成形することによって、突き合わせる。この捻り成形中において、図6に示すように、コイル端部W91、及びコイル端部W92が互いに機械的に干渉することがある。図7に示すように、コイル端部W91は、導線W91aと、導線W91aを被覆するエナメル膜W91bとを備えるものの、上記した干渉が生じると、エナメル膜W91bの少なくとも一部W91cが剥離して、めくれてしまうことがあった。 As an example of such a coil twisting device, there is a coil twisting device 900 shown in FIG. The coil twisting device 900 includes a cylindrical guide 90, a first annular layer 91, and a second annular layer 92. The first annular layer 91 and the second annular layer 92 hold the coil end portion W91 and the coil end portion W92 extending in the axial direction (here, the positive side in the Z-axis direction), respectively, while holding the first annular layer. The layer 91 and the second annular layer 92 are rotated in opposite directions to each other. Then, the coil end portion W91 and the coil end portion W92 are twisted and molded to abut each other. During this torsion molding, as shown in FIG. 6, the coil end portion W91 and the coil end portion W92 may mechanically interfere with each other. As shown in FIG. 7, the coil end portion W91 includes a lead wire W91a and an enamel film W91b that covers the lead wire W91a. However, when the above-mentioned interference occurs, at least a part of the enamel film W91b W91c is peeled off. Sometimes it turned over.

本発明は、互いに隣接する層のコイル端部同士の干渉の発生を抑制し、捻り成形を行うものとする。 According to the present invention, the occurrence of interference between the coil ends of layers adjacent to each other is suppressed, and twist molding is performed.

本発明に係るコイル捻り装置は、
円環状ステータコアのコイル端部を捻り成形するコイル捻り装置であって、
筒状の外周ガイドと、
前記筒状の外周ガイドの内側に配置された複数の環状層と、を備え、
前記複数の環状層は、同心円状に並び、
隣接する環状層同士は、互いに逆方向に回転し、
前記外周ガイドの内周面には、凹部が設けられ、
捻り成形中において、前記外周ガイドの内側に位置するコイル端部が、前記凹部に逃れる。
このような構成によれば、捻り成形中において、外周ガイド側のコイル端部を外周ガイドの内周面の凹部に逃して、外周ガイド側に移動させることができる。従って、外周ガイド側のコイル端部に隣接する層のコイル端部が、外周ガイド側のコイル端部と接触し難い。そのため、互いに隣接する層のコイル端部同士の干渉の発生を抑制して、捻り成形を行うことができる。
The coil twisting device according to the present invention is
A coil twisting device that twists and forms the coil ends of an annular stator core.
Cylindrical outer circumference guide and
A plurality of annular layers arranged inside the tubular outer peripheral guide, and the like.
The plurality of annular layers are arranged concentrically and
Adjacent annular layers rotate in opposite directions,
A recess is provided on the inner peripheral surface of the outer peripheral guide.
During twist forming, the coil end located inside the outer peripheral guide escapes to the recess.
According to such a configuration, during the torsion molding, the coil end portion on the outer peripheral guide side can be released to the recess on the inner peripheral surface of the outer peripheral guide and moved to the outer peripheral guide side. Therefore, it is difficult for the coil end portion of the layer adjacent to the coil end portion on the outer peripheral guide side to come into contact with the coil end portion on the outer peripheral guide side. Therefore, it is possible to suppress the occurrence of interference between the coil ends of the layers adjacent to each other and perform torsion molding.

本発明は、互いに隣接する層のコイル端部同士の干渉の発生を抑制し、捻り成形を行うことができる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to suppress the occurrence of interference between the coil ends of layers adjacent to each other and perform torsion molding.

実施の形態1に係るコイル捻り装置を示す模式図である。It is a schematic diagram which shows the coil twisting apparatus which concerns on Embodiment 1. FIG. 実施の形態1に係るコイル捻り装置の要部を示す模式断面図である。It is a schematic cross-sectional view which shows the main part of the coil twisting apparatus which concerns on Embodiment 1. FIG. 実施の形態1に係るコイル捻り装置を用いた捻り成形方法を示す模式図である。It is a schematic diagram which shows the twist forming method using the coil twisting apparatus which concerns on Embodiment 1. FIG. 実施の形態1に係るコイル捻り装置を用いた捻り成形方法を示す模式図である。It is a schematic diagram which shows the twist forming method using the coil twisting apparatus which concerns on Embodiment 1. FIG. 従来のコイル捻り装置を示す模式図である。It is a schematic diagram which shows the conventional coil twisting apparatus. 互いに隣接する層のコイル端部同士の干渉の発生を示す模式図である。It is a schematic diagram which shows the occurrence of the interference between the coil ends of the layers adjacent to each other. コイルのエナメルの剥離の発生を示す模式図である。It is a schematic diagram which shows the occurrence of peeling of the enamel of a coil.

以下、本発明を適用した具体的な実施形態について、図面を参照しながら詳細に説明する。ただし、本発明が以下の実施形態に限定される訳ではない。また、説明を明確にするため、以下の記載及び図面は、適宜、簡略化されている。図1〜図4では、三次元xyz座標系を規定した。 Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments. Further, in order to clarify the explanation, the following description and drawings have been simplified as appropriate. In FIGS. 1 to 4, a three-dimensional xyz coordinate system is defined.

(実施の形態1)
図1〜図4を参照して実施の形態1に係るコイル捻り装置について説明する。
(Embodiment 1)
The coil twisting device according to the first embodiment will be described with reference to FIGS. 1 to 4.

図1に示すように、コイル捻り装置100は、円筒状の外周ガイド10と、第1の環状層1と、第2の環状層2と、第3の環状層3と、第4の環状層4とを備える。第1の環状層1と、第2の環状層2と、第3の環状層3と、第4の環状層4とは、外周ガイド10の内側に配置され、この順に外周ガイド10からその中心Oに向かって同心円状に並ぶ。 As shown in FIG. 1, the coil twisting device 100 includes a cylindrical outer peripheral guide 10, a first annular layer 1, a second annular layer 2, a third annular layer 3, and a fourth annular layer. 4 and. The first annular layer 1, the second annular layer 2, the third annular layer 3, and the fourth annular layer 4 are arranged inside the outer peripheral guide 10, and the outer peripheral guide 10 is the center thereof in this order. Line up concentrically toward O.

第1の環状層1は、外周ガイド10の内側に回転可能に配置されている。第2の環状層2は、第1の環状層1の内側に回転可能に配置されている。第3の環状層3は、第2の環状層2の内側に回転可能に配置されている。第4の環状層4は、第3の環状層3の内側に回転可能に配置されている。第1の環状層1と、第2の環状層2と、第3の環状層3と、第4の環状層4とのうち、隣接する環状層同士は、互いに逆方向に回転する。 The first annular layer 1 is rotatably arranged inside the outer peripheral guide 10. The second annular layer 2 is rotatably arranged inside the first annular layer 1. The third annular layer 3 is rotatably arranged inside the second annular layer 2. The fourth annular layer 4 is rotatably arranged inside the third annular layer 3. Of the first annular layer 1, the second annular layer 2, the third annular layer 3, and the fourth annular layer 4, adjacent annular layers rotate in opposite directions to each other.

図2に示すように、円環状ステータコアW100は、第1層コイル端部W1と、第2層コイル端部W2と、第3層コイル端部W3と、第4層コイル端部W4と、円環状のコアW10とを備える。第1層コイル端部W1と、第2層コイル端部W2と、第3層コイル端部W3と、第4層コイル端部W4とは、コアW10から軸方向(ここでは、Z軸プラス側)に延びる。第1の環状層1の底面には、第1層コイル端部W1を把持する凹部が設けられている。第2の環状層2の底面には、第2層コイル端部W2を把持する凹部が設けられている。第3の環状層3の底面には、第3層コイル端部W3を把持する凹部が設けられている。第4の環状層4の底面には、第4層コイル端部W4を把持する凹部が設けられている。 As shown in FIG. 2, the annular stator core W100 includes a first layer coil end portion W1, a second layer coil end portion W2, a third layer coil end portion W3, a fourth layer coil end portion W4, and a circle. It includes an annular core W10. The first layer coil end W1, the second layer coil end W2, the third layer coil end W3, and the fourth layer coil end W4 are axially oriented from the core W10 (here, the Z-axis plus side). ). The bottom surface of the first annular layer 1 is provided with a recess for gripping the first layer coil end W1. The bottom surface of the second annular layer 2 is provided with a recess for gripping the second layer coil end W2. The bottom surface of the third annular layer 3 is provided with a recess for gripping the third layer coil end W3. The bottom surface of the fourth annular layer 4 is provided with a recess for gripping the fourth layer coil end W4.

外周ガイド10は、外周面10aと、凹部10cを有する内周面10bとを備える。図1及び図2に示す外周ガイド10の内周面10bの一例は、凹部10cを一つ含むが、内周面10bは、必要に応じて、凹部10cを複数含んでもよい。凹部10cの開口形状は、第1層コイル端部W1よりも大きな形状を備えるとよい。具体的には、図4に示すように、凹部10cの底部10dの周方向(ここでは、X軸方向)における幅L1は、例えば、第1層コイル端部W1の幅LW1の1.5倍以上2.5倍以下であるとよい。また、凹部10cの周方向における幅L2は、第1層コイル端部W1の内径側面W1bが捻り成形中において第1の環状層1の内周面1bよりも外周ガイド10側(ここでは、Y軸マイナス側)に位置するように設定されるとよい。これによって、捻り成形中において第1層コイル端部W1、第2層コイル端部W2が交差するとき、第1層コイル端部W1、及び第2層コイル端部W2が強く機械的に干渉し難くなるからである。また、凹部10cの深さD1は、捻り成形中において第1層コイル端部W1、第2層コイル端部W2が交差するとき、第1層コイル端部W1が凹部10cの斜面10eに乗り上げることなく凹部10cの底部10dに留まるように、所定の範囲内に設定されるとよい。 The outer peripheral guide 10 includes an outer peripheral surface 10a and an inner peripheral surface 10b having a recess 10c. An example of the inner peripheral surface 10b of the outer peripheral guide 10 shown in FIGS. 1 and 2 includes one recess 10c, but the inner peripheral surface 10b may include a plurality of recesses 10c, if necessary. The opening shape of the recess 10c is preferably larger than that of the first layer coil end W1. Specifically, as shown in FIG. 4, the width L1 of the bottom portion 10d of the recess 10c in the circumferential direction (here, the X-axis direction) is, for example, 1.5 times the width LW1 of the first layer coil end portion W1. It is preferable that it is 2.5 times or more and 2.5 times or less. Further, the width L2 of the recess 10c in the circumferential direction is such that the outer peripheral guide 10 side (here, Y in this case) of the inner peripheral side surface W1b of the first layer coil end W1 with respect to the inner peripheral surface 1b of the first annular layer 1 during torsion molding. It should be set so that it is located on the minus side of the axis). As a result, when the first layer coil end W1 and the second layer coil end W2 intersect during torsion molding, the first layer coil end W1 and the second layer coil end W2 strongly and mechanically interfere with each other. This is because it becomes difficult. Further, the depth D1 of the recess 10c is such that when the first layer coil end W1 and the second layer coil end W2 intersect during torsion molding, the first layer coil end W1 rides on the slope 10e of the recess 10c. It is preferable that the setting is made within a predetermined range so that the recess 10c stays at the bottom 10d.

ここで、コイル捻り装置100を用いて、円環状ステータコアW100を捻り成形する。具体的には、図3に示すように、まず、第1層コイル端部W1、及び第2層コイル端部W2は、互いに離間している。第1の環状層1、第2の環状層2に第1層コイル端部W1、及び第2層コイル端部W2をそれぞれ把持させる。そのまま、第1の環状層1、第2の環状層2を相互に逆回転させる。すると、第1層コイル端部W1、及び第2層コイル端部W2が捻り成形される。捻り成形中において、第1層コイル端部W1が捻られるとともに、図4に示すように、第1層コイル端部W1が外周ガイド10の内周面10bの凹部10cに逃れる。これによって、第1層コイル端部W1が外周ガイド10側(ここでは、Y軸マイナス側)に移動するため、第2層コイル端部W2と機械的に干渉し難い。捻り成形が完了すると、第1層コイル端部W1の先端部W1aと、第2層コイル端部W2の先端部W2aとが突き合わされる。 Here, the coil twisting device 100 is used to twist-mold the annular stator core W100. Specifically, as shown in FIG. 3, first, the first layer coil end portion W1 and the second layer coil end portion W2 are separated from each other. The first annular layer 1 and the second annular layer 2 are made to grip the first layer coil end portion W1 and the second layer coil end portion W2, respectively. As it is, the first annular layer 1 and the second annular layer 2 are rotated in opposite directions to each other. Then, the first layer coil end portion W1 and the second layer coil end portion W2 are twist-formed. During the twist forming, the first layer coil end portion W1 is twisted, and as shown in FIG. 4, the first layer coil end portion W1 escapes to the recess 10c of the inner peripheral surface 10b of the outer peripheral guide 10. As a result, the first layer coil end W1 moves to the outer peripheral guide 10 side (here, the Y-axis minus side), so that it is unlikely to mechanically interfere with the second layer coil end W2. When the torsion molding is completed, the tip portion W1a of the first layer coil end portion W1 and the tip portion W2a of the second layer coil end portion W2 are abutted against each other.

第3層コイル端部W3、及び第4層コイル端部W4についても、同様に、第3の環状層3、及び第4の環状層4を用いて捻り成形を行なうと、第3層コイル端部W3の先端部と、第4層コイル端部W4の先端部とが突き合わされる。必要に応じて先端部W1a、W2a、第3層コイル端部W3及び第4層コイル端部W4の先端部等を接合する等して、円環状ステータコアW100を完成することができる。 Similarly, when the third layer coil end W3 and the fourth layer coil end W4 are also twist-formed using the third annular layer 3 and the fourth annular layer 4, the third layer coil end is formed. The tip of the portion W3 and the tip of the fourth layer coil end W4 are abutted against each other. The annular stator core W100 can be completed by joining the tips W1a, W2a, the tip W3 of the third layer coil, the tip W4 of the fourth layer coil, and the like, if necessary.

以上より、互いに隣接する層のコイル端部同士の干渉の発生を抑制し、捻り成形を行うことができる。 From the above, it is possible to suppress the occurrence of interference between the coil ends of the layers adjacent to each other and perform twist forming.

なお、本発明は上記実施の形態に限られたものではなく、趣旨を逸脱しない範囲で適宜変更することが可能である。 The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit.

100 コイル捻り装置
1、2、3、4 環状層
1b 内周面
10 外周ガイド
10b 内周面 10c 凹部
10d 底部 10e 斜面
L1、L2、LW1 幅
W100 円環状ステータコア
W1〜W4 第1層コイル端部、第2層コイル端部、第3層コイル端部、及び第4層コイル端部
W1a、W2a 先端部 W1b 内径側面
100 Coil twisting device 1, 2, 3, 4 Circular layer 1b Inner peripheral surface 10 Outer peripheral guide 10b Inner peripheral surface 10c Recess 10d Bottom 10e Slope L1, L2, LW1 Width W100 Circular stator core W1 to W4 First layer coil end, 2nd layer coil end, 3rd layer coil end, and 4th layer coil end W1a, W2a tip W1b inner diameter side surface

Claims (1)

円環状ステータコアのコイル端部を捻り成形するコイル捻り装置であって、
筒状の外周ガイドと、
前記筒状の外周ガイドの内側に配置された複数の環状層と、を備え、
前記複数の環状層は、同心円状に並び、
隣接する環状層同士は、互いに逆方向に回転し、
前記外周ガイドの内周面には、凹部が設けられ、
捻り成形中において、前記外周ガイドの内側に位置するコイル端部が、前記凹部に逃れる、
コイル捻り装置。
A coil twisting device that twists and forms the coil ends of an annular stator core.
Cylindrical outer circumference guide and
A plurality of annular layers arranged inside the tubular outer peripheral guide, and the like.
The plurality of annular layers are arranged concentrically and
Adjacent annular layers rotate in opposite directions,
A recess is provided on the inner peripheral surface of the outer peripheral guide.
During twist forming, the coil end located inside the outer peripheral guide escapes to the recess.
Coil twisting device.
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