JP2006158024A - Coil and its manufacturing method - Google Patents
Coil and its manufacturing method Download PDFInfo
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- JP2006158024A JP2006158024A JP2004341746A JP2004341746A JP2006158024A JP 2006158024 A JP2006158024 A JP 2006158024A JP 2004341746 A JP2004341746 A JP 2004341746A JP 2004341746 A JP2004341746 A JP 2004341746A JP 2006158024 A JP2006158024 A JP 2006158024A
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- Prior art keywords
- coil
- wire
- insulating layer
- conductor portions
- eddy current
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- 239000004020 conductor Substances 0.000 claims abstract description 35
- 230000001788 irregular Effects 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
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- 239000010410 layers Substances 0.000 description 34
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- QPLDLSVMHZLSFG-UHFFFAOYSA-N copper oxide Chemical compound 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Images
Classifications
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
<P>PROBLEM TO BE SOLVED: To provide a coil which can prevent an eddy current generated in the line material of a coil, and its manufacturing method. <P>SOLUTION: The line material 23 constituting the coil 21 heteromorphic in cross section is constituted by stacking a plurality of thin band-shaped conductor parts 27 consisting of metal such as copper or the like with its periphery covered each with an insulating layer 25 and covering the whole of the stacked conductor part 27 with an outermost insulating layer 29. The insulating layer 25 is one for preventing the eddy current Ir generated in the line material 23, and an object, which is coated with a chemical cover or low-conductive resin such as, for example, an oxide film for copper, or the like is used. The outermost insulating layer 29 is one for contriving the insulation between the turns of the line material 23. <P>COPYRIGHT: (C)2006,JPO&NCIPI
Description
本発明は、ハイブリッド自動車や電気自動車のモータ等に適したコイル及びその製造方法に関する。
The present invention relates to a coil suitable for a motor of a hybrid vehicle or an electric vehicle, and a manufacturing method thereof.
ハイブリッド車、電気自動車等の駆動用モータの高効率化、高出力化のためにモータ用コイルの占積率の向上が有効である。この占積率を向上させる方法として、従来の一定断面形状の線材を巻くのに対し、コイルの巻回経路上の位置に応じて線材の断面形状を変化させる方法が提案されている。
In order to increase the efficiency and output of drive motors for hybrid vehicles and electric vehicles, it is effective to improve the space factor of the motor coils. As a method of improving the space factor, a method of changing the cross-sectional shape of the wire according to the position on the winding path of the coil has been proposed, whereas the conventional wire having a constant cross-sectional shape is wound.
このようなコイル１は、図５に示すように、略切頭錐形の外観形態を有し、その線材３の断面形状（断面略平角形）が、小径側（図５の下側）の端部から大径側（図５の上側）の端部に向けて徐々に扁平に変化している。コイル１の両端部には、電気接続のための引出部５，７が設けられている。より詳細には、図５に示すコイル１は、ほぼ四角錐の頭部を切除したような外観形態（略切頭四角錐形の形態）を有しており、例えば図６に示すようにモータのステータコア８に外挿される。このとき、コイル１はその小径側がロータ側に向けられた状態で配設される。
As shown in FIG. 5, such a coil 1 has a substantially truncated cone-shaped appearance, and the cross-sectional shape (substantially rectangular) of the wire 3 is on the small diameter side (lower side in FIG. 5). It gradually changes from an end toward the end on the large diameter side (upper side in FIG. 5). At both ends of the coil 1, lead portions 5 and 7 for electrical connection are provided. More specifically, the coil 1 shown in FIG. 5 has an external appearance (substantially truncated quadrangular pyramid shape) obtained by cutting off the head of a substantially quadrangular pyramid. For example, as shown in FIG. The stator core 8 is extrapolated. At this time, the coil 1 is disposed in a state where the small diameter side is directed to the rotor side.
このようなコイル１の製造方法としては、図７に示すように線材３を芯材９に略螺旋状に巻回して略柱形の中間コイル体１１を形成し、図８に示すようにその中間コイル体１１を成形型１３内にセットして軸方向にプレス成形して成形する方法が提案されている。
As a manufacturing method of such a coil 1, as shown in FIG. 7, a wire 3 is wound around a core 9 in a substantially spiral shape to form a substantially columnar intermediate coil body 11, and as shown in FIG. A method has been proposed in which the intermediate coil body 11 is set in a molding die 13 and press-molded in the axial direction.
しかし、上述の提案例に係る技術のように、単純に断面略平角形の線材３を芯材９に巻回してプレス成形してコイル１を形成した場合、図５及び図６に示すようにコイル１の小径側の部分１ａはロータ１５の回転による磁界の変化の影響を受けやすいため、次のような問題が生じる。すなわち、図９に示すように、ロータ１５の周辺にはロータ１５に設けられる磁界発生源（永久磁石等）によって磁界Ｂが生成され、ロータ１５の回転位置によってはロータ１５の回転に伴って線材３中を通る磁束量が変化し、線材３中に渦電流Ｉrが生じる。コイル１の小径側の部分１ａは他の部分に比してロータ１５との距離が近くその部分１ａに生成される磁界Ｂの変化が大きいとともに、厚み（コイル１の軸方向の厚み）が大きいため、他の部分よりも渦電流Ｉｒの量が大きくなり、モータの効率が低下する。
However, as shown in FIG. 5 and FIG. 6, when the coil 1 is formed by simply winding the wire 3 having a substantially rectangular cross section around the core material 9 and press-molding it as in the technique according to the above-mentioned proposal example, Since the portion 1a on the small diameter side of the coil 1 is easily affected by the change of the magnetic field due to the rotation of the rotor 15, the following problem occurs. That is, as shown in FIG. 9, a magnetic field B is generated around the rotor 15 by a magnetic field generation source (permanent magnet or the like) provided in the rotor 15, and depending on the rotation position of the rotor 15, a wire rod is generated as the rotor 15 rotates. The amount of magnetic flux passing through 3 changes, and an eddy current Ir is generated in the wire 3. The portion 1a on the small diameter side of the coil 1 is closer to the rotor 15 than the other portions, and the change in the magnetic field B generated in the portion 1a is large, and the thickness (the thickness in the axial direction of the coil 1) is large. Therefore, the amount of eddy current Ir becomes larger than other portions, and the efficiency of the motor decreases.
そこで、本発明の解決すべき課題は、コイルの線材中に生じる渦電流を防止できるコイル及びその製造方法を提供することである。
Therefore, the problem to be solved by the present invention is to provide a coil that can prevent eddy currents generated in the coil wire and a method for manufacturing the coil.
上記の課題を解決するため、請求項１の発明では、断面略平角形の線材が巻回されて形成されたコイルであって、前記線材が、その長手方向に沿って設けられる絶縁層によって複数の導体部に分割されている。
In order to solve the above-described problem, in the invention of claim 1, a coil is formed by winding a wire having a substantially rectangular cross section, and the wire is formed by a plurality of insulating layers provided along the longitudinal direction thereof. It is divided into conductor parts.
また、請求項２の発明では、請求項１の発明に係るコイルにおいて、前記線材が、複数の薄い帯状の導体部を、その導体部間に絶縁層を介挿して積層して構成される。
According to a second aspect of the present invention, in the coil according to the first aspect of the invention, the wire is configured by laminating a plurality of thin strip-shaped conductor portions with an insulating layer interposed between the conductor portions.
また、請求項３の発明では、請求項１の発明に係るコイルにおいて、前記線材が、複数の細長い略針金状の導体部を、その導体部間に絶縁層を介挿して結合して構成される。
According to a third aspect of the present invention, in the coil according to the first aspect of the present invention, the wire comprises a plurality of elongated, substantially wire-like conductor portions coupled with an insulating layer interposed between the conductor portions. The
また、請求項４の発明では、請求項１ないし３のいずれかの発明に係るコイルは、略切頭錐形状の外観形態を有する異形断面コイルである。
According to a fourth aspect of the present invention, the coil according to any one of the first to third aspects of the present invention is a modified cross-section coil having a substantially truncated cone-shaped appearance.
また、請求項５の発明では、その長手方向に沿って設けられる絶縁層によって複数の導体部に分割された線材を、略螺旋状に巻回して中間コイル体を作製する工程と、前記中間コイル体をその軸方向にプレス成形する工程と、を備える。
According to a fifth aspect of the present invention, there is provided a step of producing an intermediate coil body by winding a wire divided into a plurality of conductor portions by an insulating layer provided along a longitudinal direction thereof in a substantially spiral shape, and the intermediate coil Pressing the body in its axial direction.
請求項１に記載の発明によれば、コイルを構成する線材が、その長手方向に沿って設けられる絶縁層によって複数の導体部に分割されているため、絶縁層によって線材中に生じる渦電流を防止することができ、効率向上が図れる。
According to the first aspect of the present invention, since the wire constituting the coil is divided into the plurality of conductor portions by the insulating layer provided along the longitudinal direction, the eddy current generated in the wire by the insulating layer is reduced. This can be prevented and the efficiency can be improved.
請求項２に記載の発明によれば、線材が、複数の薄い帯状の導体部をその導体部間に絶縁層を介挿して積層して構成されるため、線材中に生じる渦電流を防止できる。
According to the invention described in claim 2, since the wire is formed by laminating a plurality of thin strip-like conductor portions with an insulating layer interposed between the conductor portions, eddy current generated in the wire can be prevented. .
請求項３に記載の発明によれば、線材が、複数の細長い略針金状の導体部をその導体部間に絶縁層を介挿して結合して構成されるため、線材中に生じる渦電流をより確実に防止できる。
According to the invention described in claim 3, since the wire is configured by connecting a plurality of elongated and substantially wire-like conductor portions with an insulating layer interposed between the conductor portions, the eddy current generated in the wire is reduced. It can be prevented more reliably.
請求項４に記載の発明によれば、コイルを異形断面コイルとすることにより、コイルの占積率を向上させることができる。
According to the fourth aspect of the present invention, the space factor of the coil can be improved by making the coil into a deformed section coil.
請求項５に記載の発明によれば、長手方向に沿って設けられる絶縁層によって複数の導体部に分割されてた線材を略螺旋状に巻回して中間コイル体を作製し、その中間コイル体を軸方向にプレス成形して異形断面コイルを製造するため、線材中に生じる渦電流を防止できる異形断面コイルを容易に作製することができる。
According to invention of Claim 5, the intermediate coil body is produced by winding the wire divided into the plurality of conductors by the insulating layer provided along the longitudinal direction substantially spirally, and the intermediate coil body Since the deformed section coil is manufactured by pressing in the axial direction, the deformed section coil that can prevent the eddy current generated in the wire can be easily manufactured.
＜第１実施形態＞
図１は、本発明の第１実施形態に係る異形断面のコイルの設置状態を示す断面図である。本実施形態に係る異形断面のコイル２１は、大略的には、前述の図５及び図６に示す異形断面のコイル１の場合とほぼ同様に、図２の線材２３を図７のように芯材９に巻回して図８の成形型１３によるプレス成形で略切頭四角推形に仕上げられるようになっている。 <First Embodiment>
FIG. 1 is a cross-sectional view showing an installed state of a coil having a modified cross section according to the first embodiment of the present invention. The coil 21 having a modified cross section according to the present embodiment is substantially the same as the coil 1 having a modified cross section shown in FIGS. 5 and 6 described above, and the wire 23 shown in FIG. It is wound around the material 9 and finished into a substantially truncated square shape by press molding with the mold 13 of FIG.
図１は、本発明の第１実施形態に係る異形断面のコイルの設置状態を示す断面図である。本実施形態に係る異形断面のコイル２１は、大略的には、前述の図５及び図６に示す異形断面のコイル１の場合とほぼ同様に、図２の線材２３を図７のように芯材９に巻回して図８の成形型１３によるプレス成形で略切頭四角推形に仕上げられるようになっている。 <First Embodiment>
FIG. 1 is a cross-sectional view showing an installed state of a coil having a modified cross section according to the first embodiment of the present invention. The coil 21 having a modified cross section according to the present embodiment is substantially the same as the coil 1 having a modified cross section shown in FIGS. 5 and 6 described above, and the wire 23 shown in FIG. It is wound around the material 9 and finished into a substantially truncated square shape by press molding with the mold 13 of FIG.
本実施形態では、図１で要部を拡大して示すように、コイル２１を構成する断面略平角形の線材２３が、その長手方向に沿って設けられる絶縁層２５によって複数の導体部２７に分割されている。より具体的には、プレス成形前の状態である図２に示すように、線材２３は、その周囲が絶縁層２５で覆われた銅等の金属からなる複数の薄い帯状の導体部２７を積層し、その積層した導体部２７の全体を最外絶縁層２９で覆って構成されている。なお、導体部２７を覆う絶縁層２５は、導体部２７が隣の導体部２７と対向する部分（図１の上下面部分）にのみ設けてあれば、コイル２１の内周側及び外周側の側面部分（図１の左右の側面部分）は省略してもよい。各導体部２７は積層された状態で互いに接着固定されているが、専用の接着剤を用いて固定を行ってもよく、絶縁層２５に接着機能を有するものを用いて接着を行うようにしてもよい。
In the present embodiment, as shown in an enlarged view of the main part in FIG. 1, the wire 23 having a substantially rectangular cross section constituting the coil 21 is formed on the plurality of conductor parts 27 by the insulating layer 25 provided along the longitudinal direction. It is divided. More specifically, as shown in FIG. 2 which is a state before press molding, the wire 23 is formed by laminating a plurality of thin strip-shaped conductor portions 27 made of a metal such as copper, the periphery of which is covered with an insulating layer 25. The entire laminated conductor portion 27 is covered with an outermost insulating layer 29. If the insulating layer 25 covering the conductor portion 27 is provided only in a portion where the conductor portion 27 faces the adjacent conductor portion 27 (upper and lower surface portions in FIG. 1), the inner and outer peripheral sides of the coil 21 are provided. Side portions (left and right side portions in FIG. 1) may be omitted. The conductor portions 27 are bonded and fixed to each other in a stacked state, but may be fixed using a dedicated adhesive, and the insulating layer 25 may be bonded using an adhesive layer. Also good.
絶縁層２５は、線材２３中に生じる渦電流Ｉｒを防止するためのもので、例えば銅の酸化膜などの化学的な被覆、導電性の低い樹脂をコーティングしたものなどが用いられる。その絶縁層２５の厚みは、占積率確保の観点より薄く設定（例えば、１〜１０μｍ程度）するのが望ましい。
The insulating layer 25 is for preventing the eddy current Ir generated in the wire 23. For example, a chemical coating such as a copper oxide film or a coating with a resin having low conductivity is used. The thickness of the insulating layer 25 is preferably set to be thin (for example, about 1 to 10 μm) from the viewpoint of securing the space factor.
最外絶縁層２９は、線材２３のターン間の絶縁等を確保するためのものであり、発熱による耐熱性等も考慮して適当な材料（例えば、エナメル等）、及び厚みが設定される。
The outermost insulating layer 29 is for securing insulation between the turns of the wire 23, and an appropriate material (for example, enamel) and thickness are set in consideration of heat resistance due to heat generation.
コイル２１の製造は、次のようにして行われる。まず、絶縁層２５で被覆された導体部２７を積層状態で集合固定し、線材２３を形成する。続いて、その線材２３を前述の図７に示すように芯材９に螺旋状に巻回して中間コイル体１１を形成し、その中間コイル体１１を図８に示すように成形型１３内に設置してプレス成形することにより、異形断面のコイル２１を形成する。
The coil 21 is manufactured as follows. First, the conductor portions 27 covered with the insulating layer 25 are assembled and fixed in a laminated state to form the wire 23. Subsequently, the wire material 23 is spirally wound around the core material 9 as shown in FIG. 7 to form the intermediate coil body 11, and the intermediate coil body 11 is placed in the mold 13 as shown in FIG. The coil 21 having an irregular cross section is formed by installing and press forming.
このように、本実施形態に係る異形断面のコイル２１では、コイル２１を構成する線材２３が、複数の薄い帯状の導体部２７をその間に絶縁層２５を介挿して積層して構成されているため、ロータ１５と近接して配置され厚みが大きいコイル２１の小径側の部分２１ａにおける線材２３中に生じる渦電流を有効に防止でき、モータの効率化が図れる。
As described above, in the coil 21 having an irregular cross section according to the present embodiment, the wire 23 constituting the coil 21 is configured by laminating a plurality of thin strip-shaped conductor portions 27 with the insulating layer 25 interposed therebetween. Therefore, the eddy current generated in the wire 23 in the portion 21a on the small diameter side of the coil 21 that is arranged close to the rotor 15 and has a large thickness can be effectively prevented, and the efficiency of the motor can be improved.
また、本実施形態に係るコイル２１は、略切頭錐形状の外観形態を有する異形断面のコイルであるため、コイル２１の占積率を向上させることができる。
Moreover, since the coil 21 which concerns on this embodiment is a coil of the irregular cross section which has a substantially truncated cone-shaped external appearance form, the space factor of the coil 21 can be improved.
なお、中間コイル体１１をプレス成形した際の線材２３の変形により、線材２３中の絶縁層２５が破壊されないかが問題であるが、渦電流Ｉｒが最も問題となるコイル２１の小径側の部分２１ａはプレス成形による変形の度合いが小さいため、絶縁層２５の破壊は生じない。コイル２１の大径側の部分２１ｂについては、プレス成形時の変形により絶縁層２５が破壊されるおそれがあるが、この部分２１ｂは小径側の部分２１ａに比してロータ１５との距離が遠く、ロータ１５の回転による磁界の変化が小さく、また、厚みも小さいため、渦電流Ｉｒは問題にならない。
In addition, although it is a problem whether the insulation layer 25 in the wire 23 is destroyed by the deformation of the wire 23 when the intermediate coil body 11 is press-molded, the portion on the small diameter side of the coil 21 in which the eddy current Ir is the most problematic. Since 21a has a small degree of deformation by press molding, the insulating layer 25 is not broken. As for the large diameter portion 21b of the coil 21, the insulating layer 25 may be destroyed due to deformation during press molding, but this portion 21b is farther from the rotor 15 than the small diameter portion 21a. Since the change of the magnetic field due to the rotation of the rotor 15 is small and the thickness is small, the eddy current Ir is not a problem.
＜第２実施形態＞
図３は、本発明の第２実施形態に係る異形断面のコイルの要部断面図である。本実施形態に係る異形断面のコイル２１が前述の第１実施形態に係る異形断面のコイル２１と実質的に異なっている点は、線材２３の構成のみであり、互いに対応する部分には同一の参照符号を付して説明を省略する。 Second Embodiment
FIG. 3 is a cross-sectional view of a main part of a coil having a modified cross section according to the second embodiment of the present invention. The coil 21 having a modified cross-section according to the present embodiment is substantially different from the coil 21 having a modified cross-section according to the first embodiment described above only in the configuration of the wire 23, and the portions corresponding to each other are the same. Reference numerals are assigned and description is omitted.
図３は、本発明の第２実施形態に係る異形断面のコイルの要部断面図である。本実施形態に係る異形断面のコイル２１が前述の第１実施形態に係る異形断面のコイル２１と実質的に異なっている点は、線材２３の構成のみであり、互いに対応する部分には同一の参照符号を付して説明を省略する。 Second Embodiment
FIG. 3 is a cross-sectional view of a main part of a coil having a modified cross section according to the second embodiment of the present invention. The coil 21 having a modified cross-section according to the present embodiment is substantially different from the coil 21 having a modified cross-section according to the first embodiment described above only in the configuration of the wire 23, and the portions corresponding to each other are the same. Reference numerals are assigned and description is omitted.
本実施形態では、図３でコイル２１の要部を拡大して示すように、コイル２１を構成する線材２３が、外周が絶縁層２５で覆われた複数の細長い略針金状の導体部２７を互いに結合し、その係合した導体部２７の外周を最外絶縁層２９で覆って構成されている。各導体部２７は、専用の接着剤を用いて結合してもよく、絶縁層２５に接着機能を有するものを用いて結合するようにしてもよい。絶縁層２５及び最外絶縁層２９の構成は、実質的に上述の第１実施形態と同様である。
In the present embodiment, as shown in an enlarged view of the main part of the coil 21 in FIG. 3, the wire 23 constituting the coil 21 includes a plurality of elongated, substantially wire-like conductor portions 27 whose outer periphery is covered with an insulating layer 25. They are coupled to each other, and the outer periphery of the engaged conductor portion 27 is covered with an outermost insulating layer 29. Each conductor portion 27 may be bonded using a dedicated adhesive, or may be bonded to the insulating layer 25 using an adhesive layer. The configurations of the insulating layer 25 and the outermost insulating layer 29 are substantially the same as those in the first embodiment.
以上のように、本実施形態では、コイル２１を構成する線材２３の断面の構成を、縦横により細かく絶縁層２５により分割することができるため、線材２３中に生じる渦電流Ｉｒをより確実に防止できる。このため、本実施形態では、前述の図９に示すように線材２３中において略螺旋状に延設される線材２３の各ループの延設面に垂直な面に沿って生じる渦電流Ｉｒだけなく、図４に示すように線材２３中において線材２３の各ループの延設面に沿って生じる渦電流Ｉｒ’も有効に防止できる。
As described above, in this embodiment, since the configuration of the cross section of the wire 23 constituting the coil 21 can be divided into the vertical and horizontal directions by the insulating layer 25, the eddy current Ir generated in the wire 23 can be more reliably prevented. it can. For this reason, in the present embodiment, as shown in FIG. 9 described above, not only the eddy current Ir generated along the surface perpendicular to the extending surface of each loop of the wire 23 extending in a substantially spiral shape in the wire 23. As shown in FIG. 4, the eddy current Ir ′ generated along the extending surface of each loop of the wire 23 in the wire 23 can be effectively prevented.
なお、渦電流Ｉｒ’成分のみを抑制すればよい場合には、図１に示すように絶縁層２５で覆われた導体部２７をコイル２１の軸方向に積層して線材２３を構成する代わりに、絶縁層２５で覆われた導体部２７をコイル２１の径方向に積層して線材２３を構成するようにしてもよい。
When only the eddy current Ir ′ component needs to be suppressed, instead of laminating the conductor portion 27 covered with the insulating layer 25 in the axial direction of the coil 21 as shown in FIG. The wire 23 may be configured by laminating the conductor portion 27 covered with the insulating layer 25 in the radial direction of the coil 21.
８ ステータコア
９ 芯材
１１ 中間コイル体
１３ 成形型
１５ ロータ
２１ コイル
２３ 線材
２５ 絶縁層
２７ 導体部
２９ 最外絶縁層 8 Stator Core 9 Core Material 11 Intermediate Coil Body 13 Mold 15 Die Rotor 21 Coil 23 Wire Material 25 Insulating Layer 27 Conductor 29 Outermost Insulating Layer
９ 芯材
１１ 中間コイル体
１３ 成形型
１５ ロータ
２１ コイル
２３ 線材
２５ 絶縁層
２７ 導体部
２９ 最外絶縁層 8 Stator Core 9 Core Material 11 Intermediate Coil Body 13 Mold 15 Die Rotor 21 Coil 23 Wire Material 25 Insulating Layer 27 Conductor 29 Outermost Insulating Layer
Claims (5)
- 断面略平角形の線材が巻回されて形成されたコイルであって、
前記線材が、その長手方向に沿って設けられる絶縁層によって複数の導体部に分割されていることを特徴とするコイル。 A coil formed by winding a wire having a substantially rectangular cross section,
The coil, wherein the wire is divided into a plurality of conductor portions by an insulating layer provided along a longitudinal direction thereof. - 請求項１に記載のコイルにおいて、
前記線材が、複数の薄い帯状の導体部を、その導体部間に絶縁層を介挿して積層して構成されることを特徴とするコイル。 The coil according to claim 1, wherein
The coil, wherein the wire is formed by laminating a plurality of thin strip-shaped conductor portions with an insulating layer interposed between the conductor portions. - 請求項１に記載のコイルにおいて、
前記線材が、複数の細長い略針金状の導体部を、その導体部間に絶縁層を介挿して結合して構成されることを特徴とするコイル。 The coil according to claim 1, wherein
The coil, wherein the wire is configured by connecting a plurality of elongated, substantially wire-like conductor portions with an insulating layer interposed between the conductor portions. - 請求項１ないし３のいずれかに記載のコイルは、略切頭錐形状の外観形態を有する異形断面コイルであることを特徴とするコイル。 The coil according to any one of claims 1 to 3, wherein the coil is a modified cross-section coil having a substantially truncated cone-shaped appearance.
- その長手方向に沿って設けられる絶縁層によって複数の導体部に分割された線材を、略螺旋状に巻回して中間コイル体を作製する工程と、
前記中間コイル体をその軸方向にプレス成形する工程と、
を備えることを特徴とする異形断面コイルの製造方法。 A step of producing an intermediate coil body by winding a wire divided into a plurality of conductor portions by an insulating layer provided along the longitudinal direction in a substantially spiral shape;
Pressing the intermediate coil body in its axial direction;
The manufacturing method of the irregular cross-section coil characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004341746A JP2006158024A (en) | 2004-11-26 | 2004-11-26 | Coil and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004341746A JP2006158024A (en) | 2004-11-26 | 2004-11-26 | Coil and its manufacturing method |
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| JP2006158024A true JP2006158024A (en) | 2006-06-15 |
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| JP2004341746A Pending JP2006158024A (en) | 2004-11-26 | 2004-11-26 | Coil and its manufacturing method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008035687A (en) * | 2006-07-06 | 2008-02-14 | Nippon Soken Inc | Electromagnetic equipment |
| JP2009011064A (en) * | 2007-06-27 | 2009-01-15 | Denso Corp | Stator of rotating electric machine, and manufacturing method thereof |
| JP2010258201A (en) * | 2009-04-24 | 2010-11-11 | Railway Technical Res Inst | Manufacturing method of ground coil for magnetic levitation railway |
| JP2013158105A (en) * | 2012-01-27 | 2013-08-15 | Denso Corp | Stator of dynamo-electric machine |
| JP2013158177A (en) * | 2012-01-31 | 2013-08-15 | Toyota Motor Corp | Stator of rotary electric machine |
| EP2819276A3 (en) * | 2013-06-25 | 2015-12-30 | Breuckmann GmbH & Co. KG | Method for manufacturing a coil and said coil |
| WO2016021036A1 (en) * | 2014-08-08 | 2016-02-11 | 株式会社日立製作所 | Rotating electric machine stator and rotating electric machine |
| EP2190103A4 (en) * | 2007-09-14 | 2016-05-25 | Shinetsu Chemical Co | Axial gap type coreless rotating machine |
| US9441145B2 (en) | 2009-08-19 | 2016-09-13 | Evonik Degussa Gmbh | Curable material comprising silylated polymers containing urethane groups, and use thereof in sealants, adhesives, binders and/or surface modifiers |
| EP3258574A4 (en) * | 2015-02-09 | 2018-09-12 | Sumitomo Seika Chemicals CO. LTD. | Rotating electric machine, coil, and coil device |
| EP3393011A1 (en) * | 2017-04-18 | 2018-10-24 | ABB Schweiz AG | Conductor structure in an inductive device |
| CN110178291A (en) * | 2017-01-18 | 2019-08-27 | 松下知识产权经营株式会社 | Motor |
| WO2020165435A1 (en) * | 2019-02-15 | 2020-08-20 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for producing a spiral-shaped body with a compressed spiral |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11113226A (en) * | 1997-09-30 | 1999-04-23 | Toyota Motor Corp | Manufacture of coil piece of stator of rotating electric machine and manufacturing equipment of coil piece |
| JP2001238390A (en) * | 2000-02-25 | 2001-08-31 | Togo Seisakusho Corp | Connecting metal fitting for coil of rotating machine, and coil unit coupled hereby |
| JP2004208464A (en) * | 2002-12-26 | 2004-07-22 | Nissan Motor Co Ltd | Coil structure for electric motor |
| JP2005186092A (en) * | 2003-12-25 | 2005-07-14 | Sumitomo Electric Ind Ltd | Method for manufacturing coil of dissimilar section, and method for assembling coil of dissimilar section |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11113226A (en) * | 1997-09-30 | 1999-04-23 | Toyota Motor Corp | Manufacture of coil piece of stator of rotating electric machine and manufacturing equipment of coil piece |
| JP2001238390A (en) * | 2000-02-25 | 2001-08-31 | Togo Seisakusho Corp | Connecting metal fitting for coil of rotating machine, and coil unit coupled hereby |
| JP2004208464A (en) * | 2002-12-26 | 2004-07-22 | Nissan Motor Co Ltd | Coil structure for electric motor |
| JP2005186092A (en) * | 2003-12-25 | 2005-07-14 | Sumitomo Electric Ind Ltd | Method for manufacturing coil of dissimilar section, and method for assembling coil of dissimilar section |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008035687A (en) * | 2006-07-06 | 2008-02-14 | Nippon Soken Inc | Electromagnetic equipment |
| US7759834B2 (en) | 2006-07-06 | 2010-07-20 | Nippon Soken, Inc. | Electromagnetic device |
| JP2009011064A (en) * | 2007-06-27 | 2009-01-15 | Denso Corp | Stator of rotating electric machine, and manufacturing method thereof |
| EP2190103A4 (en) * | 2007-09-14 | 2016-05-25 | Shinetsu Chemical Co | Axial gap type coreless rotating machine |
| JP2010258201A (en) * | 2009-04-24 | 2010-11-11 | Railway Technical Res Inst | Manufacturing method of ground coil for magnetic levitation railway |
| US9441145B2 (en) | 2009-08-19 | 2016-09-13 | Evonik Degussa Gmbh | Curable material comprising silylated polymers containing urethane groups, and use thereof in sealants, adhesives, binders and/or surface modifiers |
| JP2013158105A (en) * | 2012-01-27 | 2013-08-15 | Denso Corp | Stator of dynamo-electric machine |
| JP2013158177A (en) * | 2012-01-31 | 2013-08-15 | Toyota Motor Corp | Stator of rotary electric machine |
| EP3496246A1 (en) * | 2013-06-25 | 2019-06-12 | Breuckmann GmbH & Co. KG | Spool and method for manufacturing a spool |
| EP2819276A3 (en) * | 2013-06-25 | 2015-12-30 | Breuckmann GmbH & Co. KG | Method for manufacturing a coil and said coil |
| WO2016021036A1 (en) * | 2014-08-08 | 2016-02-11 | 株式会社日立製作所 | Rotating electric machine stator and rotating electric machine |
| EP3258574A4 (en) * | 2015-02-09 | 2018-09-12 | Sumitomo Seika Chemicals CO. LTD. | Rotating electric machine, coil, and coil device |
| CN110178291A (en) * | 2017-01-18 | 2019-08-27 | 松下知识产权经营株式会社 | Motor |
| EP3393011A1 (en) * | 2017-04-18 | 2018-10-24 | ABB Schweiz AG | Conductor structure in an inductive device |
| WO2020165435A1 (en) * | 2019-02-15 | 2020-08-20 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for producing a spiral-shaped body with a compressed spiral |
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