WO2022004298A1 - Coil, motor, and manufacturing method - Google Patents

Coil, motor, and manufacturing method Download PDF

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Publication number
WO2022004298A1
WO2022004298A1 PCT/JP2021/021734 JP2021021734W WO2022004298A1 WO 2022004298 A1 WO2022004298 A1 WO 2022004298A1 JP 2021021734 W JP2021021734 W JP 2021021734W WO 2022004298 A1 WO2022004298 A1 WO 2022004298A1
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Prior art keywords
coating
coating film
coil
bent portion
edgewise coil
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PCT/JP2021/021734
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French (fr)
Japanese (ja)
Inventor
慶一郎 額田
隆信 佐藤
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パナソニックＩｐマネジメント株式会社
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Priority to CN202180044730.XA priority Critical patent/CN115867995A/en
Priority to JP2022533780A priority patent/JPWO2022004298A1/ja
Publication of WO2022004298A1 publication Critical patent/WO2022004298A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/06—Insulation of windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation

Definitions

  • the present disclosure relates generally to coils, motors and manufacturing methods, and more particularly to coils, motors and manufacturing methods having conductors and coatings.
  • stator core having a large number of concave slots and a large number of convex magnetic poles alternately in the circumferential direction
  • magnet wire having a rectangular cross section with an insulating coating formed on the outer peripheral surface of the metal wire.
  • the space between both side surfaces of the slot and the space between both side surfaces is formed so as to decrease from the bottom of the slot toward the tip opening.
  • the magnet wire is wound around the magnetic pole and inserted into the slot in a laminated manner. Further, the width dimension of the magnet wire is arranged so as to be continuously or stepwise reduced from the bottom of the slot toward the tip opening.
  • the coil according to one aspect of the present disclosure is an edgewise coil, and includes a conducting wire and a coating film covering the conducting wire.
  • the conductor includes a bent portion where the conductor is bent.
  • the coating includes a first coating that covers a portion of the conducting wire that is different from the bent portion, and a second coating that covers at least a portion where tension is generated in the bent portion.
  • the coating film has a boundary between the first coating film and the second coating film in a direction intersecting the direction in which the tension is generated.
  • the manufacturing method according to one aspect of the present disclosure is the manufacturing method of the edgewise coil, in which the conductor having the first coating is wound to form the edgewise coil and the conductor is bent. The process of forming the second coating on the bent portion is included.
  • FIG. 4A is a diagram illustrating a planned bending processing portion of the edgewise coil according to the third embodiment.
  • FIG. 4B is a diagram illustrating repair of a bent portion of the edgewise coil of the same as above.
  • FIG. 4C is a diagram illustrating after repairing the bent portion of the edgewise coil of the same as above.
  • FIG. 5A is a side view of a motor using the edgewise coil according to the second modification.
  • FIG. 5B is a top view of a motor using the same edgewise coil.
  • FIG. 6A is a diagram illustrating the same width-fixed edgewise coil.
  • FIG. 6B is a diagram illustrating the same width-variable edgewise coil.
  • Tension T1 is generated in the outer portion of the bent portion 4 according to the bending process.
  • the tension T1 is generated along the conductor 3.
  • a tensile stress is generated in the outer portion of the conducting wire 3, and the first coating film L1 may be lifted or peeled off at the specific portion D1.
  • L2 has an overlapping portion 7 that overlaps with at least a part of the first coating film L1. In the overlapping portion 7, as shown in FIG. 1C, that is, the first coating film L1 and the second coating film L2 overlap each other.
  • the coating film 5 has a boundary B1 between the first coating film L1 and the second coating film L2 in a direction intersecting the direction in which the tension T1 is generated. Therefore, it can be seen that the bent portion 4 is repaired by the second coating film L2.
  • the coating film covering the bent portion 4 may be damaged. Therefore, by repairing the bent portion 4 with the second coating film L2, it is possible to suppress the deterioration of the insulating performance of the coating film 5. Therefore, deterioration of the quality of the coil 1 can be suppressed. Therefore, it is possible to provide the coil 1 in which the portion where the first coating L1 may be damaged is repaired by the second coating L2 which is an insulating coating.
  • the coil (1) according to the first aspect is an edgewise coil (1), which includes a conductor (3), a coating film (5) covering the conductor (3), and a coating (5).
  • the conductor (3) includes a bent portion (4) where the conductor (3) is bent.
  • the coating (5) has a first coating (L1) covering a portion (6) of the conducting wire (3) different from the bent portion (4), and at least tension (T1) is generated at the bent portion (4).
  • the coating film (5) has a boundary (B1, B2, B3) between the first coating film (L1) and the second coating film (L2) in a direction intersecting the direction in which tension is generated.
  • the shape of the bent portion (4) is formed between the first coating (L1) and the second coating (L2). It has a boundary (B4) that is different from the boundary (B1) along the line.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The purpose of the present disclosure is to provide a coil that can suppress quality deterioration, a motor, and a manufacturing method. A coil (1) is an edgewise coil (1) comprising a conducting wire (3) and a coating film (5) that covers the conducting wire (3). The conducting wire (3) includes curved sections (4), which are portions of the conducting wire (3) where the same are curved. The coating film (5) includes a first coating film (L1) that covers portions, of the conducting wire (3), different from the curved sections (4), and a second coating film (L2) that covers at least portions in the curved sections (4) where tensile force (T1) is generated. The coating film (5) has, between the first coating film (L1) and the second coating film (L2), boundaries (B1) lying in a direction intersecting the direction in which the tensile force (T1) is generated.

Description

コイル、モータ及び製造方法Coil, motor and manufacturing method
　本開示は、一般にコイル、モータ及び製造方法に関し、より詳細には導線と被膜を有するコイル、モータ及び製造方法に関する。 The present disclosure relates generally to coils, motors and manufacturing methods, and more particularly to coils, motors and manufacturing methods having conductors and coatings.
　多数個の凹状スロットと多数個の凸状磁極とを周方向に交互に有するステータコアと、金属線の外周面に絶縁被膜を形成した横断面矩形のマグネットワイヤと、を備えている。かつ、スロットの両側面、両側面の間隔寸法はスロットの底部から先端開口部に向かって小さくなるように形成されている。マグネットワイヤは、磁極に巻設されると共にスロット内に積層状に挿入されている。さらに、マグネットワイヤの幅寸法をスロットの底部から先端開口部に向かって連続的に又は段階的に小さくなるように配設したものである。 It is equipped with a stator core having a large number of concave slots and a large number of convex magnetic poles alternately in the circumferential direction, and a magnet wire having a rectangular cross section with an insulating coating formed on the outer peripheral surface of the metal wire. Moreover, the space between both side surfaces of the slot and the space between both side surfaces is formed so as to decrease from the bottom of the slot toward the tip opening. The magnet wire is wound around the magnetic pole and inserted into the slot in a laminated manner. Further, the width dimension of the magnet wire is arranged so as to be continuously or stepwise reduced from the bottom of the slot toward the tip opening.
　一方で、被膜の付いた平角線を折り曲げて、エッジワイズコイルを作製する場合、曲げる部分の角を大きく曲げると、曲げた部分の外側の部分の被膜が破損する可能性がある。被膜が破損するとコイルの品質が低下する可能性がある。 On the other hand, when making an edgewise coil by bending a flat wire with a coating, if the corner of the bent part is bent significantly, the coating on the outer part of the bent part may be damaged. Damage to the coating can reduce the quality of the coil.
特開２００７－３１７６３６号公報Japanese Unexamined Patent Publication No. 2007-317636
　本開示は上記課題に鑑みてなされ、品質の低下を抑制することができるコイル、モータ及び製造方法を提供することを目的とする。 The present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide a coil, a motor, and a manufacturing method capable of suppressing deterioration in quality.
　本開示の一態様に係るコイルは、エッジワイズコイルであって、導線と、前記導線を被覆する被膜と、を備える。前記導線は、前記導線が曲げられた部位である曲げ部を含む。前記被膜は、前記導線のうち前記曲げ部とは異なる部位を被覆している第１被膜と、前記曲げ部において少なくとも張力が発生する部位を被覆している第２被膜と、を含む。前記被膜は、前記第１被膜と前記第２被膜との間において、前記張力が発生する方向と交わる方向に境界を有する。 The coil according to one aspect of the present disclosure is an edgewise coil, and includes a conducting wire and a coating film covering the conducting wire. The conductor includes a bent portion where the conductor is bent. The coating includes a first coating that covers a portion of the conducting wire that is different from the bent portion, and a second coating that covers at least a portion where tension is generated in the bent portion. The coating film has a boundary between the first coating film and the second coating film in a direction intersecting the direction in which the tension is generated.
　本開示の一態様に係るモータは、前記コイルと、前記コイルを装着するステータと、を備える。 The motor according to one aspect of the present disclosure includes the coil and a stator to which the coil is mounted.
　本開示の一態様に係る製造方法は、前記エッジワイズコイルの製造方法であって、前記第１被膜の付いた前記導線を巻回して前記エッジワイズコイルを形成する処理と、前記導線が曲げられた前記曲げ部に前記第２被膜を形成する処理と、を含む。 The manufacturing method according to one aspect of the present disclosure is the manufacturing method of the edgewise coil, in which the conductor having the first coating is wound to form the edgewise coil and the conductor is bent. The process of forming the second coating on the bent portion is included.
図１Ａは、実施形態１に係るエッジワイズコイルの概略を説明する図である。図１Ｂは、同上のエッジワイズコイルの曲げ部の第２被膜による補修前について説明する図である。図１Ｃは、同上のエッジワイズコイルの曲げ部の補修後について説明する図である。FIG. 1A is a diagram illustrating an outline of an edgewise coil according to the first embodiment. FIG. 1B is a diagram illustrating before repairing the bent portion of the edgewise coil of the same as above by the second coating. FIG. 1C is a diagram illustrating after repairing the bent portion of the edgewise coil of the same as above. 図２は、実施形態１に係る製造プロセスを説明する図である。FIG. 2 is a diagram illustrating a manufacturing process according to the first embodiment. 図３Ａは、実施形態２に係るエッジワイズコイルの曲げ加工実施予定部を説明する図である。図３Ｂは、同上のエッジワイズコイルの曲げ部の補修について説明する図である。図３Ｃは、同上のエッジワイズコイルの曲げ部の補修後について説明する図である。FIG. 3A is a diagram illustrating a planned bending processing portion of the edgewise coil according to the second embodiment. FIG. 3B is a diagram illustrating repair of a bent portion of the edgewise coil of the same as above. FIG. 3C is a diagram illustrating after repairing the bent portion of the edgewise coil of the same as above. 図４Ａは、実施形態３に係るエッジワイズコイルの曲げ加工実施予定部を説明する図である。図４Ｂは、同上のエッジワイズコイルの曲げ部の補修について説明する図である。図４Ｃは、同上のエッジワイズコイルの曲げ部の補修後について説明する図である。FIG. 4A is a diagram illustrating a planned bending processing portion of the edgewise coil according to the third embodiment. FIG. 4B is a diagram illustrating repair of a bent portion of the edgewise coil of the same as above. FIG. 4C is a diagram illustrating after repairing the bent portion of the edgewise coil of the same as above. 図５Ａは、変形例２に係るエッジワイズコイルを使用したモータの側面図である。図５Ｂは、同上のエッジワイズコイルを使用したモータの上面図である。FIG. 5A is a side view of a motor using the edgewise coil according to the second modification. FIG. 5B is a top view of a motor using the same edgewise coil. 図６Ａは、同上の幅固定のエッジワイズコイルを説明する図である。図６Ｂは、同上の幅可変のエッジワイズコイルを説明する図である。FIG. 6A is a diagram illustrating the same width-fixed edgewise coil. FIG. 6B is a diagram illustrating the same width-variable edgewise coil.
　以下に説明する各実施形態及び変形例は、本開示の一例に過ぎず、本開示は、各実施形態及び変形例に限定されない。これらの実施形態及び変形例以外であっても、本開示に係る技術的思想を逸脱しない範囲であれば、設計等に応じて種々の変更が可能である。 Each embodiment and modification described below is merely an example of the present disclosure, and the present disclosure is not limited to each embodiment and modification. Other than these embodiments and modifications, various changes can be made according to the design and the like as long as they do not deviate from the technical idea of the present disclosure.
　（実施形態１）
　以下、本実施形態に係るコイル１、モータ２及び製造方法について、図１Ａ～図６Ｂを用いて説明する。 (Embodiment 1)
Hereinafter, the coil 1, the motor 2, and the manufacturing method according to the present embodiment will be described with reference to FIGS. 1A to 6B.
　（１）概要
　本実施形態１のコイル１は、一例として、エッジワイズコイルである。以下の説明では、コイル１は、エッジワイズコイル１として説明する。本実施形態１のコイル１は、エッジワイズコイル１であって、導線３と、導線３を被覆している被膜５とを備えている。導線３は、曲げられた部位である曲げ部４を含んでいる。被膜５は、導線３のうち曲げ部４とは異なる部位６を被膜する第１被膜Ｌ１と、曲げ部４において少なくとも張力Ｔ１が発生する部位を被膜する第２被膜Ｌ２と、を含んでいる。被膜５は、第１被膜Ｌ１と第２被膜Ｌ２との間において、張力Ｔ１が発生する方向と交わる方向に境界Ｂ１を有する。 (1) Outline The coil 1 of the first embodiment is an edgewise coil as an example. In the following description, the coil 1 will be described as an edgewise coil 1. The coil 1 of the present embodiment 1 is an edgewise coil 1 and includes a conducting wire 3 and a coating film 5 covering the conducting wire 3. The conductor 3 includes a bent portion 4, which is a bent portion. The coating film 5 includes a first coating film L1 that coats a portion 6 of the conducting wire 3 that is different from the bent portion 4, and a second coating film L2 that coats a portion of the bent portion 4 where at least tension T1 is generated. The coating film 5 has a boundary B1 between the first coating film L1 and the second coating film L2 in a direction intersecting the direction in which the tension T1 is generated.
　ここで、張力Ｔ１は、導線３の曲げ部４において、曲げ部４から曲がっていない導線３の両方向に引っ張る力であり、導線３を曲げたことにより発生する力である。張力Ｔ１は、導線３に沿って発生する（図１Ｂ参照）。張力Ｔ１が発生することにより、曲げ部４の広角β側（外側、図１Ｂ参照）において、第１被膜Ｌ１が損傷する可能性がある。 Here, the tension T1 is a force that pulls the unbent conductor 3 from the bent portion 4 in both directions at the bent portion 4 of the conductor 3, and is a force generated by bending the conductor 3. The tension T1 is generated along the conductor 3 (see FIG. 1B). The generation of tension T1 may damage the first coating film L1 on the wide-angle β side (outside, see FIG. 1B) of the bent portion 4.
　エッジワイズコイル１は、平角線と呼ばれる導線３を折り曲げることにより形成されている。導線３は、予め絶縁被膜である第１被膜Ｌ１により被覆されている。つまり、曲げ部４が形成される前の導線３は、予め絶縁被膜である第１被膜Ｌ１により被覆されている。 The edgewise coil 1 is formed by bending a conducting wire 3 called a flat wire. The conductor 3 is previously covered with a first coating film L1 which is an insulating coating. That is, the conductor 3 before the bent portion 4 is formed is previously covered with the first coating film L1 which is an insulating coating.
　エッジワイズコイル１は、導線３と、導線３に元々付いていた第１被膜Ｌ１と、第１被膜Ｌ１が破損する可能性のある特定部位Ｄ１を補修する第２被膜Ｌ２と、を含んでいる。 The edgewise coil 1 includes a conductor 3, a first coating L1 originally attached to the conductor 3, and a second coating L2 for repairing a specific portion D1 where the first coating L1 may be damaged. ..
　一方、本実施形態１のエッジワイズコイル１では、導線３を折り曲げたことにより、導線３（の曲げ部４）は、張力が発生する特定部位Ｄ１を含む。特定部位Ｄ１では、発生した張力により第１被膜Ｌ１が破損する可能性、又は破損する。そこで、導線３（の曲げ部４）は、張力が発生する特定部位Ｄ１に対して第２被膜Ｌ２を被覆することで、補修する。エッジワイズコイル１の絶縁被膜（第１被膜Ｌ１）のうち特定部位Ｄ１を補修することにより、エッジワイズコイル１の絶縁性能を維持している。 On the other hand, in the edgewise coil 1 of the first embodiment, the conductor wire 3 (the bent portion 4) includes the specific portion D1 in which tension is generated due to the bending of the conductor wire 3. At the specific portion D1, the first coating L1 may be damaged or damaged due to the generated tension. Therefore, the conducting wire 3 (bending portion 4) is repaired by covering the specific portion D1 where tension is generated with the second coating film L2. The insulation performance of the edgewise coil 1 is maintained by repairing the specific portion D1 of the insulating coating (first coating L1) of the edgewise coil 1.
　本実施形態１により、導線３を用いたエッジワイズコイル１の曲げ部４の特定部位Ｄ１に対して第２被膜Ｌ２で補修することで、エッジワイズコイル１の絶縁性能を維持することができる。 According to the first embodiment, the insulation performance of the edgewise coil 1 can be maintained by repairing the specific portion D1 of the bent portion 4 of the edgewise coil 1 using the conductor 3 with the second coating film L2.
　（２）構成
　本実施形態１のエッジワイズコイル１の構成について説明する。図１Ａ、図１Ｂ及び図１Ｃに示すように、エッジワイズコイル１は、導線３と、第１被膜Ｌ１と、第２被膜Ｌ２と、境界Ｂ１と、を含んでいる。 (2) Configuration The configuration of the edgewise coil 1 of the first embodiment will be described. As shown in FIGS. 1A, 1B and 1C, the edgewise coil 1 includes a conductor 3, a first coating L1, a second coating L2, and a boundary B1.
　エッジワイズコイル１の概略図を、図１Ａに示す。図１Ａに示すように、エッジワイズコイル１は、平角線である導線３を含む。導線３は、導線３が曲げられた部位である曲げ部４を含んでいる。導線３は、断面が、一例として、長方形の平らな角線であり、絶縁被膜である第１被膜Ｌ１によって被覆されている。導線３の心材は、例えば、銅材であり、電気伝導性を有している。曲げ部４は、導線３を加工し、曲げられた部分である。第１被膜Ｌ１により被覆された導線３を曲げると、図１Ｂに示すように、曲げ部４の外側の部分では、第１被膜Ｌ１が破損する可能性がある。ここで、曲げ部４の外側とは、導線３が巻回されたエッジワイズコイル１の中心から見て、曲げ部４の外側に位置する部分のことである。 A schematic diagram of the edgewise coil 1 is shown in FIG. 1A. As shown in FIG. 1A, the edgewise coil 1 includes a conductor wire 3 which is a flat wire. The conductor 3 includes a bent portion 4 which is a portion where the conductor 3 is bent. The conductor 3 has a rectangular flat square wire as an example in cross section, and is covered with a first coating film L1 which is an insulating coating. The core material of the conducting wire 3 is, for example, a copper material and has electrical conductivity. The bent portion 4 is a portion where the conducting wire 3 is processed and bent. When the lead wire 3 covered with the first coating L1 is bent, as shown in FIG. 1B, the first coating L1 may be damaged at the outer portion of the bent portion 4. Here, the outside of the bent portion 4 is a portion located on the outside of the bent portion 4 when viewed from the center of the edgewise coil 1 around which the conducting wire 3 is wound.
　曲げ部４の外側の部分では、曲げ加工に従って、張力Ｔ１が発生する。張力Ｔ１は、導線３に沿って発生する。張力Ｔ１が発生することにより、導線３の外側の部分は引張応力が発生し、特定部位Ｄ１では、第１被膜Ｌ１が浮き剥がれ等が発生する可能性がある。 Tension T1 is generated in the outer portion of the bent portion 4 according to the bending process. The tension T1 is generated along the conductor 3. When the tension T1 is generated, a tensile stress is generated in the outer portion of the conducting wire 3, and the first coating film L1 may be lifted or peeled off at the specific portion D1.
　図１Ａの概略図においては、幅固定のエッジワイズコイル１である構成としたが、この構成に限定されない。導線３において、幅加工を行い、幅可変のエッジワイズコイルであってもよい。 In the schematic view of FIG. 1A, the configuration is an edgewise coil 1 having a fixed width, but the configuration is not limited to this configuration. The conductor wire 3 may be an edgewise coil whose width is variable and whose width is processed.
　本実施形態１のエッジワイズコイル１では、図１Ｃに示すように、被覆に用いられる第１被膜Ｌ１に加えて、特定部位Ｄ１の補修用として、第２被膜Ｌ２を有している。第１被膜Ｌ１と第２被膜Ｌ２とは、同じ材料であってもよいし、異なる材料であってもよい。本実施形態１では、第１被膜Ｌ１と第２被膜Ｌ２とは、同材質であるものとして説明する。 As shown in FIG. 1C, the edgewise coil 1 of the first embodiment has a second coating L2 for repairing a specific portion D1 in addition to the first coating L1 used for coating. The first coating L1 and the second coating L2 may be the same material or may be different materials. In the first embodiment, the first coating film L1 and the second coating film L2 will be described as being made of the same material.
　第１被膜Ｌ１と第２被膜Ｌ２が同材質である場合、第１被膜Ｌ１及び第２被膜Ｌ２は、例えば、ポリウレタン、ポリアミド、ポリエステル、エステルイミド、アミドイミド、ポリイミドが挙げられる。また、第１被膜Ｌ１及び第２被膜Ｌ２の形成方法は、塗布、含浸、滴下、静電塗装、スプレー塗装、電着塗装、粉体塗装、フィルム・テープ貼り付けが挙げられる。第１被膜Ｌ１と第２被膜Ｌ２とで被膜の形成方法が異なっていてもよい。 When the first coating L1 and the second coating L2 are made of the same material, examples of the first coating L1 and the second coating L2 include polyurethane, polyamide, polyester, esterimide, amideimide, and polyimide. Examples of the method for forming the first coating film L1 and the second coating film L2 include coating, impregnation, dropping, electrostatic coating, spray coating, electrodeposition coating, powder coating, and film / tape attachment. The method of forming the coating film may be different between the first coating film L1 and the second coating film L2.
　図１Ｂに示すように、元々形成されていた第１被膜Ｌ１と、補修として形成された第２被膜Ｌ２との境目には境界Ｂ１が形成される。境界Ｂ１は、第１被膜Ｌ１と第２被膜Ｌ２とが同材質であっても、異材質であっても形成される境界面である。例えば、曲げ部４が形成される前においては、導線３の全面に電着塗装により形成した第１被膜Ｌ１が形成されているので、境界Ｂ１は形成されていない。曲げ部４が形成され、曲げ部４において第１被膜Ｌ１が破損する可能性がある部位に第２被膜Ｌ２が形成されると、第１被膜Ｌ１と第２被膜Ｌ２との間には、境界Ｂ１が形成される。具体的には、境界Ｂ１は、張力Ｔ１が発生する方向と交わる方向に形成される。 As shown in FIG. 1B, a boundary B1 is formed at the boundary between the originally formed first coating film L1 and the second coating film L2 formed as a repair. The boundary B1 is a boundary surface formed regardless of whether the first coating L1 and the second coating L2 are made of the same material or different materials. For example, before the bent portion 4 is formed, the boundary B1 is not formed because the first coating film L1 formed by electrodeposition coating is formed on the entire surface of the conducting wire 3. When the bent portion 4 is formed and the second coating L2 is formed at a portion of the bent portion 4 where the first coating L1 may be damaged, a boundary is formed between the first coating L1 and the second coating L2. B1 is formed. Specifically, the boundary B1 is formed in a direction intersecting the direction in which the tension T1 is generated.
　境界Ｂ１においては、境界Ｂ１を挟んで曲げ部４の側の第２被膜Ｌ２と、元々母材である導線３を覆っていた被覆である第１被膜Ｌ１とが存在しており、第２被膜Ｌ２は第１被膜Ｌ１の少なくとも一部と重複した重複部７を有している。重複部７では、図１Ｃに示すように、つまり、第１被膜Ｌ１と第２被膜Ｌ２とは重なりが生じている。 At the boundary B1, there is a second coating L2 on the side of the bent portion 4 with the boundary B1 in between, and a first coating L1 which is a coating that originally covered the conductor wire 3 which is the base material, and the second coating. L2 has an overlapping portion 7 that overlaps with at least a part of the first coating film L1. In the overlapping portion 7, as shown in FIG. 1C, that is, the first coating film L1 and the second coating film L2 overlap each other.
　本実施形態１の境界Ｂ１は、第１被膜Ｌ１と第２被膜Ｌ２との間において、曲げ部４の形状に沿った、境界Ｂ１とは別の境界Ｂ４を有している。第１被膜Ｌ１の損傷した可能性のある特定部位Ｄ１は、曲げ部４における導線３の幅方向の一部に形成されており、幅方向の全周囲にわたる境界Ｂ１は形成されていない。これは、本実施形態１においては、第２被膜Ｌ２は、第１被膜Ｌ１の損傷する可能性のある特定部位Ｄ１を補修しているためである。 The boundary B1 of the first embodiment has a boundary B4 between the first coating L1 and the second coating L2 along the shape of the bent portion 4 and different from the boundary B1. The specific portion D1 of the first coating film L1 which may be damaged is formed in a part of the bending portion 4 in the width direction of the conducting wire 3, and the boundary B1 over the entire circumference in the width direction is not formed. This is because, in the first embodiment, the second coating L2 repairs the specific portion D1 of the first coating L1 that may be damaged.
　（３）製造方法
　本実施形態１のエッジワイズコイル１の製造方法について、図２を参照して説明する。 (3) Manufacturing Method The manufacturing method of the edgewise coil 1 of the first embodiment will be described with reference to FIG.
　エッジワイズコイル１の製造方法は、エッジワイズコイルの形成処理（ステップＳ１）と、被膜形成処理（ステップＳ２）と、を含む。エッジワイズコイルの形成処理では、第１被膜Ｌ１が形成された導線３を巻回してエッジワイズコイル１が形成される。被膜形成処理では、導線３が曲げられた曲げ部４に対して第２被膜Ｌ２を形成する。 The method for manufacturing the edgewise coil 1 includes an edgewise coil forming process (step S1) and a film forming process (step S2). In the edgewise coil forming process, the edgewise coil 1 is formed by winding the lead wire 3 on which the first coating film L1 is formed. In the film forming process, the second film L2 is formed on the bent portion 4 in which the conducting wire 3 is bent.
　本実施形態１のエッジワイズコイル１の製造方法は、第１被膜Ｌ１の付いた導線３を折り曲げることによって、エッジワイズコイル１を形成する処理を含んでいる。第１被膜Ｌ１の付いた導線３を折り曲げることにより、エッジワイズコイル１に形成されたエッジ部（曲げ部４）の第１被膜Ｌ１が損傷する可能性がある。そのため、エッジワイズコイル１の製造方法は、第２被膜Ｌ２により第１被膜Ｌ１の損傷する可能性のある特定部位Ｄ１を被覆する処理を含んでいる。第１被膜Ｌ１と第２被膜Ｌ２とは、上述したように、同材質であってもよいし、異材質であってもよい。本実施形態１では、第１被膜Ｌ１と第２被膜Ｌ２とは同材質で、ポリウレタンを用いた静電塗装により、第２被膜Ｌ２を形成する場合について説明する。静電塗装とは、接地した被塗物を正極とし、塗料噴霧装置を負極として、直接高電圧を両極間に印加して、両極間に静電界を形成し、塗料の微粒子を負に帯電させて、被膜を作製する方法である。本実施形態１では、エッジワイズコイル１を接地して正極とし、噴霧塗料装置を負極として、高電圧を両極間に印加し、両極間に静電界を形成する。ポリウレタンの塗料微粒子を負に帯電させて噴霧し、第１被膜Ｌ１の特定部位Ｄ１に第２被膜Ｌ２を形成する。本実施形態１では、第１被膜Ｌ１と第２被膜Ｌ２とは、ともにポリウレタンであるが、上述したように、第１被膜Ｌ１の損傷する可能性のある部分と、新たに静電塗装により形成された第２被膜Ｌ２との間には、境界Ｂ１が形成される。 The method for manufacturing the edgewise coil 1 of the first embodiment includes a process of forming the edgewise coil 1 by bending the lead wire 3 having the first coating film L1. By bending the lead wire 3 with the first coating L1, the first coating L1 of the edge portion (bending portion 4) formed in the edgewise coil 1 may be damaged. Therefore, the method for manufacturing the edgewise coil 1 includes a process of covering the specific portion D1 of the first coating film L1 which may be damaged by the second coating film L2. As described above, the first coating film L1 and the second coating film L2 may be made of the same material or may be made of different materials. In the first embodiment, a case where the first coating L1 and the second coating L2 are made of the same material and the second coating L2 is formed by electrostatic coating using polyurethane will be described. Electrostatic coating uses a grounded object as the positive electrode and a paint sprayer as the negative electrode, and directly applies a high voltage between the two electrodes to form an electrostatic field between the two electrodes, negatively charging the fine particles of the paint. This is a method for producing a film. In the first embodiment, the edgewise coil 1 is grounded to serve as a positive electrode, and a spray coating device is used as a negative electrode, and a high voltage is applied between the two electrodes to form an electrostatic field between the two electrodes. The polyurethane paint fine particles are negatively charged and sprayed to form the second coating film L2 on the specific portion D1 of the first coating film L1. In the first embodiment, both the first coating L1 and the second coating L2 are polyurethane, but as described above, the portion of the first coating L1 that may be damaged is newly formed by electrostatic coating. A boundary B1 is formed between the second coating film L2 and the formed second coating film L2.
　以上により、エッジワイズコイル１の曲げ部４に発生する第１被膜Ｌ１の損傷による絶縁性能の低下を、第２被膜Ｌ２を形成することにより抑制することができる。 As described above, the deterioration of the insulation performance due to the damage of the first coating film L1 generated in the bent portion 4 of the edgewise coil 1 can be suppressed by forming the second coating film L2.
　（４）利点
　コイル１は、エッジワイズコイル１であって、導線３と、導線３を被覆する被膜５と、を備える。導線３は、導線３が曲げられた部位である曲げ部４を含む。被膜５は、導線３のうち曲げ部とは異なる部位６を被覆している第１被膜Ｌ１と、曲げ部４において少なくとも張力Ｔ１が発生する部位を被覆している第２被膜Ｌ２とを含む。被膜５は、第１被膜Ｌ１と第２被膜Ｌ２との間において、張力Ｔ１が発生する方向と交わる方向に境界Ｂ１を有する。 (4) Advantages The coil 1 is an edgewise coil 1 and includes a conductor 3 and a coating film 5 that covers the conductor 3. The conductor 3 includes a bent portion 4 which is a portion where the conductor 3 is bent. The coating film 5 includes a first coating film L1 that covers a portion 6 of the conducting wire 3 that is different from the bent portion, and a second coating film L2 that covers a portion of the bent portion 4 where at least tension T1 is generated. The coating film 5 has a boundary B1 between the first coating film L1 and the second coating film L2 in a direction intersecting the direction in which the tension T1 is generated.
　この構成によると、被膜５は、第１被膜Ｌ１と第２被膜Ｌ２との間において、張力Ｔ１が発生する方向と交わる方向に境界Ｂ１を有している。そのため、第２被膜Ｌ２で曲げ部４を補修していることが分かる。 According to this configuration, the coating film 5 has a boundary B1 between the first coating film L1 and the second coating film L2 in a direction intersecting the direction in which the tension T1 is generated. Therefore, it can be seen that the bent portion 4 is repaired by the second coating film L2.
　曲げ部４においては張力Ｔ１が発生するため、曲げ部４を被覆する被膜は破損する可能性がある。そこで、第２被膜Ｌ２で曲げ部４を補修することで、被膜５の絶縁性能の低下を抑制することができる。このため、コイル１の品質の低下を抑制することができる。したがって、第１被膜Ｌ１が破損する可能性のある部分を、絶縁被膜である第２被膜Ｌ２で補修したコイル１を提供することができる。 Since tension T1 is generated in the bent portion 4, the coating film covering the bent portion 4 may be damaged. Therefore, by repairing the bent portion 4 with the second coating film L2, it is possible to suppress the deterioration of the insulating performance of the coating film 5. Therefore, deterioration of the quality of the coil 1 can be suppressed. Therefore, it is possible to provide the coil 1 in which the portion where the first coating L1 may be damaged is repaired by the second coating L2 which is an insulating coating.
　（５）変形例
　以下に、変形例について列記する。なお、以下に説明する変形例は、上記実施形態と適宜組み合わせて適用可能である。 (5) Modification examples The modification examples are listed below. The modifications described below can be applied in combination with the above embodiments as appropriate.
　（５－１）変形例１
　実施形態１では、第１被膜Ｌ１と第２被膜Ｌ２とはともにポリウレタンの同材質である構成としたが、この構成に限定されない。第１被膜Ｌ１と第２被膜Ｌ２とは、異材質である構成であってもよい。 (5-1) Modification 1
In the first embodiment, both the first coating L1 and the second coating L2 are made of the same polyurethane material, but the configuration is not limited to this. The first coating film L1 and the second coating film L2 may be made of different materials.
　第１被膜Ｌ１と第２被膜Ｌ２が異材質である場合、第１被膜Ｌ１は、上記材料又は上記材料の組み合わせに対して、第２被膜Ｌ２は、例えば、フッ素樹脂、ポリエチレンテレフタレート（ＰＥＴ）、芳香族ポリエステル（ＬＣＰ）、ポリエーテルエーテルケトン（ＰＥＥＫ）、ポリフェニレンスルファイド（ＰＰＳ）、芳香族ポリアミド、エポキシ、アクリルが挙げられる。上記の第２被膜Ｌ２の形成方法は、上述した形成方法が挙げられる。これらに加えて、不飽和ポリエステル等のワニスは、塗布、含浸、滴下により第２被膜Ｌ２として形成することができる。フッ素樹脂等の熱収縮チューブは、熱収縮により、第２被膜Ｌ２として形成することができる。また、マイカは、フィルム・テープ貼り付けにより、第２被膜Ｌ２として形成することができる。 When the first coating L1 and the second coating L2 are made of different materials, the first coating L1 is the above-mentioned material or a combination of the above materials, while the second coating L2 is, for example, fluororesin, polyethylene terephthalate (PET). Examples include aromatic polyester (LCP), polyetheretherketone (PEEK), polyphenylene sulfide (PPS), aromatic polyamide, epoxy and acrylic. Examples of the method for forming the second coating film L2 include the above-mentioned forming method. In addition to these, the varnish such as unsaturated polyester can be formed as the second coating L2 by coating, impregnating, and dropping. The heat-shrinkable tube made of fluororesin or the like can be formed as the second coating L2 by heat-shrinking. Further, the mica can be formed as the second coating film L2 by attaching a film or tape.
　本変形例１では、第１被膜Ｌ１と第２被膜Ｌ２とが異材質である一例として、第１被膜Ｌ１がポリウレタン、第２被膜Ｌ２がＰＥＥＫである場合について説明する。第１被膜Ｌ１であるポリウレタンが塗装された状態において、エッジワイズコイル１を形成する。この場合、曲げ部４において第１被膜Ｌ１が損傷して絶縁性能が低下する可能性がある。このため、本変形例１では、絶縁性能の低下を抑制するために、第２被膜Ｌ２として第１被膜Ｌ１とは異なるＰＥＥＫをスプレー塗装により形成する。ＰＥＥＫのスプレー塗装においては、ＰＥＥＫ樹脂の微粒粉を水に分散させ、エアスプレー装置で吹き付けた後、焼成成膜する。これにより、第２被膜Ｌ２であるＰＥＥＫの成膜が完了する。第２被膜Ｌ２は、スプレー塗装によって、第１被膜Ｌ１の上にも、第１被膜Ｌ１の特定部位Ｄ１の上にも形成されている。つまり、境界Ｂ１は、第１被膜Ｌ１と第２被膜Ｌ２との間に形成されており、実施形態１と同様に、第１被膜Ｌ１と第２被膜Ｌ２との重なりも発生している。 In the present modification 1, as an example in which the first coating L1 and the second coating L2 are made of different materials, a case where the first coating L1 is polyurethane and the second coating L2 is PEEK will be described. The edgewise coil 1 is formed in a state where the polyurethane which is the first coating film L1 is coated. In this case, the first coating film L1 may be damaged in the bent portion 4 and the insulation performance may be deteriorated. Therefore, in the present modification 1, in order to suppress the deterioration of the insulating performance, PEEK different from the first coating L1 is formed as the second coating L2 by spray coating. In PEEK spray coating, fine particles of PEEK resin are dispersed in water, sprayed with an air spray device, and then fired to form a film. This completes the formation of PEEK, which is the second coating film L2. The second coating film L2 is formed on both the first coating film L1 and the specific portion D1 of the first coating film L1 by spray coating. That is, the boundary B1 is formed between the first coating film L1 and the second coating film L2, and the overlap between the first coating film L1 and the second coating film L2 also occurs as in the first embodiment.
　（５－２）変形例２
　曲げ部４の第１被膜Ｌ１の特定部位Ｄ１を第２被膜Ｌ２により補修したエッジワイズコイル１は、図５Ａ及び図５Ｂに示すように、エッジワイズコイル１を装着するステータ１４と組み合わせてモータ２への適用が可能である。エッジワイズコイル１を有するモータ２の側面図を図５Ａに、モータ２の上面図を図５Ｂに示す。 (5-2) Modification 2
As shown in FIGS. 5A and 5B, the edgewise coil 1 in which the specific portion D1 of the first coating L1 of the bent portion 4 is repaired by the second coating L2 is a motor 2 in combination with a stator 14 to which the edgewise coil 1 is mounted. Can be applied to. A side view of the motor 2 having the edgewise coil 1 is shown in FIG. 5A, and a top view of the motor 2 is shown in FIG. 5B.
　モータ２は、エッジワイズコイル１と、シャフト１１と、ベアリング１２と、ロータ１３と、ステータ１４と、端子部材１５と、ベアリング１８と、を含んでいる。 The motor 2 includes an edgewise coil 1, a shaft 11, a bearing 12, a rotor 13, a stator 14, a terminal member 15, and a bearing 18.
　エッジワイズコイル１においては、導線３を折り曲げて形成した後、曲げ部４の第１被膜Ｌ１の損傷する可能性のある特定部位Ｄ１は、第２被膜Ｌ２により補修されている。そのため、導線３を折り曲げたことによるエッジワイズコイル１の絶縁性能の低下は抑制されている。 In the edgewise coil 1, after the conductor 3 is bent and formed, the specific portion D1 of the bent portion 4 where the first coating L1 may be damaged is repaired by the second coating L2. Therefore, the deterioration of the insulation performance of the edgewise coil 1 due to the bending of the conducting wire 3 is suppressed.
　モータ２の各要素について説明する。シャフト１１は、回転動力を伝える。ベアリング１２と、ベアリング１８とは、２つのベアリングにより、シャフト１１を回転可能に支持している。ロータ１３は、図５Ｂ、図６Ａ及び図６Ｂに示すように、シャフト１１と、複数（図６Ａ及び図６Ｂでは１２個）の永久磁石１７と、を備える。ロータ１３は、ステータ１４に対して回転可能であり、ステータ１４の複数のエッジワイズコイル１に電流が流れることにより発生する磁界により回転する。つまり、ロータ１３は、永久磁石１７を有し、永久磁石１７による磁界とステータ１４のエッジワイズコイル１に電流が流れることにより発生する磁界とで回転し、発生するトルクをシャフト１１に伝える。ステータ１４は、複数のティース１６を有している。複数のティース１６には、インシュレータを介して複数のエッジワイズコイル１が巻回されている。端子部材１５は、スイッチング回路（図示せず）に接続する複数（図５Ｂでは３つ）の端子部材である。 Each element of motor 2 will be explained. The shaft 11 transmits rotational power. The bearing 12 and the bearing 18 rotatably support the shaft 11 by two bearings. As shown in FIGS. 5B, 6A and 6B, the rotor 13 includes a shaft 11 and a plurality of (12 in FIGS. 6A and 6B) permanent magnets 17. The rotor 13 is rotatable with respect to the stator 14, and is rotated by a magnetic field generated by a current flowing through a plurality of edgewise coils 1 of the stator 14. That is, the rotor 13 has a permanent magnet 17 and rotates with a magnetic field generated by the permanent magnet 17 and a magnetic field generated by a current flowing through the edgewise coil 1 of the stator 14, and transmits the generated torque to the shaft 11. The stator 14 has a plurality of teeth 16. A plurality of edgewise coils 1 are wound around the plurality of teeth 16 via an insulator. The terminal member 15 is a plurality of (three in FIG. 5B) terminal members connected to a switching circuit (not shown).
　モータ２では、エッジワイズコイル１をステータ１４に装着する。導線３を巻回してエッジワイズコイル１を形成する方法について、図６Ａ及び図６Ｂの１２極１８スロットのエッジワイズコイル１を用いて説明する。 In the motor 2, the edgewise coil 1 is mounted on the stator 14. A method of winding the conductor 3 to form the edgewise coil 1 will be described using the edgewise coil 1 of 12 poles and 18 slots of FIGS. 6A and 6B.
　導線３を巻回してエッジワイズコイル１を形成する方法は、図６Ａに示す幅固定と、図６Ｂに示す幅可変とが可能である。幅固定は、導線３を巻回する幅を固定しており、幅可変は導線３を巻回する幅を可変としている。幅加工を施した平角線（導線３）を折り曲げてエッジワイズコイル１を作製することにより、スロット内の占積率を向上させて、大きな回転トルクを効率よく得られるモータ２を製造することが可能である。ここで、幅加工とは、占積率が高くなるようにエッジワイズコイル１の幅を調整するために、導線３の幅を加工することである。 The method of winding the conductor 3 to form the edgewise coil 1 can be the fixed width shown in FIG. 6A or the variable width shown in FIG. 6B. In the fixed width, the width around which the conductor 3 is wound is fixed, and in the variable width, the width around which the conductor 3 is wound is variable. By bending a flat wire (lead wire 3) that has been subjected to width processing to produce an edgewise coil 1, it is possible to manufacture a motor 2 that can improve the space factor in the slot and efficiently obtain a large rotational torque. It is possible. Here, the width processing is to process the width of the conducting wire 3 in order to adjust the width of the edgewise coil 1 so that the space factor becomes high.
　以上により、第１被膜Ｌ１が破損する可能性のある部分に絶縁被膜である第２被膜Ｌ２を補修することにより、品質の低下を抑制したモータ２を提供することができる。 From the above, it is possible to provide the motor 2 in which the deterioration of quality is suppressed by repairing the second coating L2 which is an insulating coating in the portion where the first coating L1 may be damaged.
　（実施形態２）
　本実施形態２では、エッジワイズコイル１を作製して角になる、つまりエッジになる部分（曲げ部４）の第１被膜Ｌ１は予め除去する点が実施形態１とは異なる。本実施形態２では、図３Ａに示すように、導線３において、エッジ部分となる曲げ部４の第１被膜Ｌ１を予め除去しておく。導線３のうち曲げ部４に相当する部位を特定部位Ｄ２とする。 (Embodiment 2)
The second embodiment is different from the first embodiment in that the edgewise coil 1 is manufactured and the first coating film L1 at the corner, that is, the edge portion (bent portion 4) is removed in advance. In the second embodiment, as shown in FIG. 3A, the first coating film L1 of the bent portion 4 which is the edge portion of the conducting wire 3 is removed in advance. The portion of the conducting wire 3 corresponding to the bent portion 4 is designated as the specific portion D2.
　特定部位Ｄ２には、曲げ加工を行う場合、張力Ｔ１が作用する。張力Ｔ１は、図３Ｂに示すように、曲げ部４の形状に沿って発生する。このため、特定部位Ｄ２の第１被膜Ｌ１は、実施形態１と同様に、第１被膜Ｌ１が損傷する可能性がある。このため、予め特定部位Ｄ２の第１被膜Ｌ１を除去しておくことにより、張力Ｔ１の影響を抑制することができる。 Tension T1 acts on the specific portion D2 when bending is performed. As shown in FIG. 3B, the tension T1 is generated along the shape of the bent portion 4. Therefore, the first coating L1 of the specific portion D2 may be damaged by the first coating L1 as in the first embodiment. Therefore, by removing the first coating film L1 of the specific portion D2 in advance, the influence of the tension T1 can be suppressed.
　図３Ｂに示すように、特定部位Ｄ２を曲げて曲げ部４を形成する。このため、エッジ部（曲げ部４）において第１被膜Ｌ１が付いていないエッジワイズコイル１が形成される。予め曲げ部４の第１被膜Ｌ１が除去された特定部位Ｄ２が形成されていることから、導線３に曲げ加工を行うことにより発生する張力Ｔ１の第１被膜に対する影響を抑制することができる。 As shown in FIG. 3B, the specific portion D2 is bent to form the bent portion 4. Therefore, the edgewise coil 1 without the first coating film L1 is formed at the edge portion (bending portion 4). Since the specific portion D2 from which the first coating film L1 of the bending portion 4 has been removed is formed in advance, it is possible to suppress the influence of the tension T1 generated by bending the conducting wire 3 on the first coating film.
　図３Ｃに示すように、第１被膜Ｌ１が付いていない曲げ部４に第２被膜Ｌ２を形成し、元々の第１被膜Ｌ１と第２被膜Ｌ２とで被膜５を形成し、第１被膜Ｌ１の絶縁性能の低下を抑制することができる。 As shown in FIG. 3C, the second coating L2 is formed on the bent portion 4 to which the first coating L1 is not attached, the coating 5 is formed by the original first coating L1 and the second coating L2, and the first coating L1 is formed. It is possible to suppress the deterioration of the insulation performance of.
　曲げ部４において、第１被膜Ｌ１を予め除去することで、導線３を曲げて曲げ部４を形成する場合に、第１被膜Ｌ１の浮き剥がれ等の破損が発生する可能性を予め抑制し、曲げ部４を形成した後に第２被膜Ｌ２を形成することで、安定した第１被膜Ｌ１と第２被膜Ｌ２とを形成することができる。 By removing the first coating L1 in the bent portion 4 in advance, the possibility of damage such as floating and peeling of the first coating L1 when the conducting wire 3 is bent to form the bent portion 4 is suppressed in advance. By forming the second coating L2 after forming the bent portion 4, a stable first coating L1 and a second coating L2 can be formed.
　具体的には、元々の被膜である第１被膜Ｌ１には、実施形態１と同様の材料、製造方法を適用することができる。また、第２被膜Ｌ２にも、実施形態１と同様の材料、製造方法を適用することができる。 Specifically, the same materials and manufacturing methods as those in the first embodiment can be applied to the first coating film L1, which is the original coating film. Further, the same materials and manufacturing methods as those in the first embodiment can be applied to the second coating film L2.
　一例として、電着塗装により第２被覆である第２被膜Ｌ２が形成される場合について説明する。まず、導線３において、曲げ部４になる部分の第１被膜Ｌ１を除去する。次に、導線３をエッジワイズコイル１となるように成形加工する。この場合、予め第１被膜Ｌ１を除去した領域は、エッジワイズコイル１の曲げ部４に相当しており、曲げ部４において第１被膜Ｌ１が除去されている。この第１被膜Ｌ１が除去された領域に、第２被膜Ｌ２が電着塗装により形成される。電着塗装では、電着塗料の中に電着塗布される対象と、電極とを入れて電位を生じさせ、塗膜成分を電気泳動させることにより、電着塗布される対象の表面に塗膜を析出させる。今回、導線３の第１被膜Ｌ１を予め除去し、導線３の母材をむき出しにしていることで、電着塗布における電極の役割を果たし、第１被膜Ｌ１を予め除去した曲げ部４に電着塗布することが可能となっている。導線３の第１被膜Ｌ１を予め除去した曲げ部４に第２被膜Ｌ２を形成し、エッジワイズコイル１は完成する。 As an example, a case where the second coating L2, which is the second coating, is formed by electrodeposition coating will be described. First, in the conducting wire 3, the first coating film L1 at the portion to be the bent portion 4 is removed. Next, the conducting wire 3 is molded so as to be an edgewise coil 1. In this case, the region from which the first coating L1 has been removed in advance corresponds to the bent portion 4 of the edgewise coil 1, and the first coating L1 is removed at the bent portion 4. A second coating L2 is formed by electrodeposition coating in the region where the first coating L1 has been removed. In electrodeposition coating, an object to be electrodeposited and an electrode are placed in the electrodeposition paint to generate an electric potential, and the coating film components are electrophoresed to apply a coating film to the surface of the object to be electrodeposited. Is deposited. This time, by removing the first coating film L1 of the conducting wire 3 in advance and exposing the base material of the conducting wire 3, it plays the role of an electrode in electrodeposition coating, and the bending portion 4 from which the first coating film L1 has been removed in advance is charged with electricity. It is possible to apply the clothes. The second coating L2 is formed on the bent portion 4 from which the first coating L1 of the conducting wire 3 has been removed in advance, and the edgewise coil 1 is completed.
　第１被膜Ｌ１が予め除去された曲げ部４に第２被膜Ｌ２を形成することにより、曲げ部４の両端において、図３Ｂに示すように、境界Ｂ２が形成される。境界Ｂ２においては、第１被膜Ｌ１は第２被膜Ｌ２の少なくとも一部と重複している。つまり、第１被膜Ｌ１と第２被膜Ｌ２とは重なりが生じている。 By forming the second coating L2 on the bent portion 4 from which the first coating L1 has been removed in advance, the boundary B2 is formed at both ends of the bent portion 4 as shown in FIG. 3B. At the boundary B2, the first coating L1 overlaps with at least a part of the second coating L2. That is, the first coating L1 and the second coating L2 overlap each other.
　また、第２被膜Ｌ２は、曲げ部４の全周を被覆している。これは曲げ部４に相当する部位（特定部位Ｄ２）の導線３の第１被膜Ｌ１を予め除去しているためであって、実施形態１のように第１被膜Ｌ１の損傷する可能性のある特定部位Ｄ１だけを第２被膜Ｌ２により補修する場合とは異なるように境界Ｂ２は形成されている。 Further, the second coating L2 covers the entire circumference of the bent portion 4. This is because the first coating L1 of the conducting wire 3 of the portion corresponding to the bending portion 4 (specific portion D2) has been removed in advance, and there is a possibility that the first coating L1 may be damaged as in the first embodiment. The boundary B2 is formed so as to be different from the case where only the specific portion D1 is repaired by the second coating L2.
　（実施形態３）
　本実施形態３のエッジワイズコイル１では、例えば、フッ素樹脂等により形成される熱収縮チューブＬ３を第２被膜Ｌ２として用いる点が、実施形態１，２とは異なる。 (Embodiment 3)
The edgewise coil 1 of the third embodiment is different from the first and second embodiments in that, for example, the heat-shrinkable tube L3 formed of a fluororesin or the like is used as the second coating film L2.
　図４Ａに示すように、第２被膜Ｌ２としての熱収縮チューブＬ３は、エッジワイズコイル１を形成する前に、導線３において曲げ部４として形成される部位（形成予定部位Ｄ３）に熱収縮チューブＬ３を配置させておいて、エッジワイズコイル１を形成する。 As shown in FIG. 4A, the heat-shrinkable tube L3 as the second coating L2 is a heat-shrinkable tube at a portion (scheduled formation portion D3) formed as a bent portion 4 in the conducting wire 3 before forming the edgewise coil 1. L3 is arranged to form the edgewise coil 1.
　図４Ｂに示すように、第１被膜Ｌ１の付いた導線３を曲げ加工を行って曲げ部４を形成すると、曲げ部４には張力Ｔ１が発生する。張力Ｔ１は、曲げ部４を曲げ部４から第１被膜Ｌ１の付いた導線３の方向に、曲げ部４の両端を引っ張るように作用する。このため、曲げ部４においては、張力Ｔ１により、第１被膜Ｌ１は破損する可能性がある。 As shown in FIG. 4B, when the lead wire 3 with the first coating film L1 is bent to form the bent portion 4, tension T1 is generated in the bent portion 4. The tension T1 acts to pull both ends of the bent portion 4 from the bent portion 4 in the direction of the conducting wire 3 having the first coating L1. Therefore, in the bent portion 4, the tension T1 may damage the first coating film L1.
　図４Ｂに示すように、エッジワイズコイル１を形成後に熱を加えて熱収縮チューブＬ３を収縮させ、図４Ｃに示すように曲げ部４の第１被膜Ｌ１の損傷を修復する。ここで、曲げ部４として形成される部位（形成予定部位Ｄ３）が複数設けられる場合には、複数の形成予定部位Ｄ３に一対一に対応する複数の熱収縮チューブＬ３が、対応する形成予定部位Ｄ３に配置される。 As shown in FIG. 4B, after the edgewise coil 1 is formed, heat is applied to shrink the heat-shrinkable tube L3, and as shown in FIG. 4C, the damage of the first coating film L1 of the bent portion 4 is repaired. Here, when a plurality of portions (scheduled formation portions D3) to be formed as the bending portion 4 are provided, a plurality of heat-shrinkable tubes L3 corresponding to one-to-one with the plurality of planned formation portions D3 correspond to the planned formation portions. Placed in D3.
　熱収縮チューブＬ３による第１被膜Ｌ１の補修は、第１被膜Ｌ１とは異なる材質の第２被膜Ｌ２を、導線３の長さ方向とは垂直方向の導線３及び曲げ部４の周囲方向において、全周にわたって補修している。 To repair the first coating L1 with the heat-shrinkable tube L3, the second coating L2 made of a material different from that of the first coating L1 is used in the peripheral direction of the conducting wire 3 and the bent portion 4 in the direction perpendicular to the length direction of the conducting wire 3. It is being repaired all around.
　また、曲げ部４と、導線３との間には、図４Ｃに示すように、境界Ｂ３が形成される。境界Ｂ３においては、第１被膜Ｌ１と熱収縮チューブＬ３とは重なり（重複部７）が生じている。境界Ｂ３は、実施形態２と同様に、導線３の幅方向の全周囲にわたって形成されている。 Further, as shown in FIG. 4C, a boundary B3 is formed between the bent portion 4 and the conducting wire 3. At the boundary B3, the first coating film L1 and the heat-shrinkable tube L3 overlap each other (overlapping portion 7). The boundary B3 is formed over the entire circumference of the conductor 3 in the width direction, as in the second embodiment.
　（その他の変形例）
　以下に、変形例について列記する。なお、以下に説明する変形例は、上記各実施形態と適宜組み合わせて適用可能である。 (Other variants)
The modified examples are listed below. The modifications described below can be applied in combination with each of the above embodiments as appropriate.
　変形例２において、モータ２は、図６Ｂに示す幅可変のエッジワイズコイル１を用いる構成としたが、この構成に限定されない。図６Ａに示す幅固定のエッジワイズコイル１を用いる構成であってもよい。 In the modification 2, the motor 2 is configured to use the edgewise coil 1 having a variable width shown in FIG. 6B, but is not limited to this configuration. The edgewise coil 1 having a fixed width shown in FIG. 6A may be used.
　実施形態３において、導線３の全周囲にわたって第１被膜Ｌ１とは異なる素材である熱収縮チューブＬ３を用いて第１被膜Ｌ１を補修する構成としたが、この構成に限定されない。例えば、絶縁テープ（図示せず）で第１被膜Ｌ１の特定部位Ｄ１を巻く構成であってもよい。 In the third embodiment, the first coating L1 is repaired by using a heat-shrinkable tube L3 which is a material different from the first coating L1 over the entire circumference of the lead wire 3, but the configuration is not limited to this. For example, an insulating tape (not shown) may be used to wind the specific portion D1 of the first coating film L1.
　（まとめ）
　以上、説明したように、第１の態様に係るコイル（１）は、エッジワイズコイル（１）であって、導線（３）と、導線（３）を被覆している被膜（５）と、を備える。導線（３）は、導線（３）が曲げられた部位である曲げ部（４）を含む。被膜（５）は、導線（３）のうち曲げ部（４）とは異なる部位（６）を被覆している第１被膜（Ｌ１）と、曲げ部（４）において少なくとも張力（Ｔ１）が発生する部位を被覆している第２被膜（Ｌ２）とを含む。被膜（５）は、第１被膜（Ｌ１）と第２被膜（Ｌ２）との間において、張力が発生する方向と交わる方向に境界（Ｂ１，Ｂ２，Ｂ３）を有する。 (summary)
As described above, the coil (1) according to the first aspect is an edgewise coil (1), which includes a conductor (3), a coating film (5) covering the conductor (3), and a coating (5). To prepare for. The conductor (3) includes a bent portion (4) where the conductor (3) is bent. The coating (5) has a first coating (L1) covering a portion (6) of the conducting wire (3) different from the bent portion (4), and at least tension (T1) is generated at the bent portion (4). Includes a second coating (L2) that covers the site to be covered. The coating film (5) has a boundary (B1, B2, B3) between the first coating film (L1) and the second coating film (L2) in a direction intersecting the direction in which tension is generated.
　この構成によると、曲げ部（４）とは異なる部位（６）を被覆している第１被膜（Ｌ１）と、張力（Ｔ１）が発生する部位を被覆している第２被膜（Ｌ２）を有することで、被膜（５）を補修したコイル（１）を提供することができる。曲げ部（４）を第２被膜（Ｌ２）で被覆することで、境界（Ｂ１，Ｂ２，Ｂ３）が形成される。また、曲げ部（４）では、張力（Ｔ１）が発生するため、曲げ部（４）が形成される部位に予め第１被膜（Ｌ１）が形成されると、当該部位に形成された第１被膜（Ｌ１）は破損する可能性がある。このため、第１被膜（Ｌ１）の破損する可能性のある部位を第２被膜（Ｌ２）により補修することで、絶縁性能の低下を抑制すること、つまり被膜（５）の品質の低下を抑制することができる。 According to this configuration, the first coating (L1) covering the portion (6) different from the bent portion (4) and the second coating (L2) covering the portion where tension (T1) is generated are formed. By having it, it is possible to provide the coil (1) in which the coating film (5) is repaired. By covering the bent portion (4) with the second coating film (L2), boundaries (B1, B2, B3) are formed. Further, since tension (T1) is generated in the bent portion (4), when the first coating film (L1) is formed in advance in the portion where the bent portion (4) is formed, the first formed in the portion. The coating (L1) may be damaged. Therefore, by repairing the portion of the first coating film (L1) that may be damaged by the second coating film (L2), the deterioration of the insulating performance is suppressed, that is, the deterioration of the quality of the coating film (5) is suppressed. can do.
　第２の態様に係るコイル（１）では、第１の態様において、第１被膜（Ｌ１）と第２被膜（Ｌ２）とは同一材料から形成されている。 In the coil (1) according to the second aspect, in the first aspect, the first coating film (L1) and the second coating film (L2) are formed of the same material.
　この構成によると、第１被膜（Ｌ１）と第２被膜（Ｌ２）とが同一材料で形成されていることにより、追加で材料が発生することがなく、被膜（５）の絶縁性能の低下を抑制しながら、第１被膜（Ｌ１）を補修するコストを抑制することができる。 According to this configuration, since the first coating film (L1) and the second coating film (L2) are made of the same material, no additional material is generated, and the insulation performance of the coating film (5) is deteriorated. While suppressing it, the cost of repairing the first coating film (L1) can be suppressed.
　第３の態様に係るコイル（１）では、第１の態様において、第１被膜（Ｌ１）と第２被膜（Ｌ２）とは別材料から形成されている。 In the coil (1) according to the third aspect, in the first aspect, the first coating film (L1) and the second coating film (L2) are formed of different materials.
　この構成によると、第１被膜（Ｌ１）と第２被膜（Ｌ２）とは、別材料から形成されることで、補修の際の材料の選択肢及び製造方法の選択肢が広くなる。 According to this configuration, since the first coating film (L1) and the second coating film (L2) are formed of different materials, the choice of materials and the choice of manufacturing method at the time of repair are widened.
　第４の態様に係るコイル（１）では、第１～第３のいずれかの態様において、第１被膜（Ｌ１）と第２被膜（Ｌ２）との間において、曲げ部（４）の形状に沿った、境界（Ｂ１）とは別の境界（Ｂ４）を有する。 In the coil (1) according to the fourth aspect, in any one of the first to third aspects, the shape of the bent portion (4) is formed between the first coating (L1) and the second coating (L2). It has a boundary (B4) that is different from the boundary (B1) along the line.
　この構成によると、第１被膜（Ｌ１）と第２被膜（Ｌ２）との間において、曲げ部（４）の形状に沿った、境界（Ｂ１）とは別の境界（Ｂ４）を有することで、第２被膜（Ｌ２）は、導線（３）の一部を補修している。このため、第２被膜（Ｌ２）は、第１被膜（Ｌ１）の破損している可能性がある箇所を補修しており、被膜（５）の絶縁性能の低下を抑制しながら、第１被膜（Ｌ１）を補修するコストを抑制することができる。 According to this configuration, the first coating (L1) and the second coating (L2) have a boundary (B4) that is different from the boundary (B1) along the shape of the bent portion (4). , The second coating (L2) repairs a part of the conducting wire (3). Therefore, the second coating (L2) repairs a portion of the first coating (L1) that may be damaged, and the first coating while suppressing deterioration of the insulation performance of the coating (5). The cost of repairing (L1) can be suppressed.
　第５の態様に係るコイル（１）では、第１～第３のいずれかの態様において、第２被膜（Ｌ２）は、曲げ部（４）の全周を被覆している。 In the coil (1) according to the fifth aspect, in any one of the first to third aspects, the second coating film (L2) covers the entire circumference of the bent portion (4).
　この構成によると、第２被膜（Ｌ２）は、曲げ部（４）の全周を覆うことで、安定した補修を行うことができ、被膜（５）の絶縁性能の低下を抑制することができる。つまり、品質の低下を抑制することができる。 According to this configuration, the second coating film (L2) can be stably repaired by covering the entire circumference of the bent portion (4), and the deterioration of the insulation performance of the coating film (5) can be suppressed. .. That is, deterioration of quality can be suppressed.
　第６の態様に係るコイル（１）では、第１～第５のいずれかの態様において、境界（Ｂ１，Ｂ２，Ｂ３）を挟んで、第１被膜（Ｌ１）は、第２被膜（Ｌ２）の少なくとも一部と重複する。 In the coil (1) according to the sixth aspect, in any one of the first to fifth aspects, the first coating film (L1) is the second coating film (L2) with the boundary (B1, B2, B3) interposed therebetween. It overlaps with at least a part of.
　この構成によると、第１被膜（Ｌ１）と第２被膜（Ｌ２）とが重複することにより、境界（Ｂ１，Ｂ２，Ｂ３）において、絶縁性能の低下を抑制することができる。つまり、品質の低下を抑制することができる。 According to this configuration, the overlap of the first coating (L1) and the second coating (L2) can suppress the deterioration of the insulation performance at the boundary (B1, B2, B3). That is, deterioration of quality can be suppressed.
　第７の態様に係るモータ（２）は、第１～第６のいずれかの態様のコイル（１）と、コイルを装着するステータ（１４）と、を備える。 The motor (2) according to the seventh aspect includes a coil (1) according to any one of the first to sixth aspects and a stator (14) to which the coil is mounted.
　この構成によると、導線（３）を曲げることによって作製したエッジワイズコイル（１）において、元々付いていた絶縁被膜である第１被膜（Ｌ１）の特定部位（Ｄ１）を第２被膜（Ｌ２）で補修することにより、コイル（１）の被膜（５）の絶縁性能の低下を抑制したモータ（２）を提供することができる。つまり、品質の低下を抑制することができる。 According to this configuration, in the edgewise coil (1) produced by bending the conducting wire (3), the specific portion (D1) of the first coating (L1), which is the originally attached insulating coating, is formed by the second coating (L2). By repairing with the above, it is possible to provide the motor (2) in which the deterioration of the insulation performance of the coating film (5) of the coil (1) is suppressed. That is, deterioration of quality can be suppressed.
　第８の態様に係る製造方法は、エッジワイズコイル（１）の製造方法であって、第１被膜（Ｌ１）の付いた導線（３）を巻回してエッジワイズコイル（１）を形成する処理と、導線（３）が曲げられた曲げ部（４）に第２被膜（Ｌ２）を形成する処理と、を含む。 The manufacturing method according to the eighth aspect is the manufacturing method of the edgewise coil (1), in which the conductor wire (3) having the first coating film (L1) is wound to form the edgewise coil (1). And a process of forming a second coating film (L2) on the bent portion (4) in which the conducting wire (3) is bent.
　この方法によると、第１被膜（Ｌ１）の付いた導線（３）を曲げることによってエッジワイズコイル（１）を形成する処理と、曲げ部（４）に絶縁被膜である第２被膜（Ｌ２）を形成する処理と、を含むことによって、絶縁性能の低下を抑制したエッジワイズコイル（１）を提供することができる。つまり、品質の低下を抑制することができる。 According to this method, a process of forming an edgewise coil (1) by bending a lead wire (3) having a first coating (L1) and a second coating (L2) which is an insulating coating on the bent portion (4). By including the process of forming the above, it is possible to provide the edgewise coil (1) in which the deterioration of the insulating performance is suppressed. That is, deterioration of quality can be suppressed.
　　１　　コイル、エッジワイズコイル
　　２　　モータ
　　３　　導線
　　４　　曲げ部
　　５　　被膜
　　６　　異なる部位
　　７　　重複部
　　１４　　ステータ
　　Ｌ１　　第１被膜
　　Ｌ２　　第２被膜
　　Ｂ１，Ｂ２，Ｂ３，Ｂ４　　境界
　　Ｔ１　　張力 1 Coil, Edgewise coil 2 Motor 3 Conductor 4 Bending part 5 Coating 6 Different parts 7 Overlapping part 14 Stator L1 First coating L2 Second coating B1, B2, B3, B4 Boundary T1 Tension

Claims (8)

  1. 　エッジワイズコイルであって、
    　導線と、
    　前記導線を被覆している被膜と、を備え、
    　前記導線は、前記導線が曲げられた部位である曲げ部を含み、
    　前記被膜は、前記導線のうち前記曲げ部とは異なる部位を被覆している第１被膜と、前記曲げ部において少なくとも張力が発生する部位を被覆している第２被膜と、を含み、
    　前記被膜は、前記第１被膜と前記第２被膜との間において、前記張力が発生する方向と交わる方向に境界を有する、
    　コイル。     It ’s an edgewise coil.
    With conductors
    With a coating covering the conductor,
    The conductor includes a bent portion where the conductor is bent.
    The coating includes a first coating that covers a portion of the conductor that is different from the bent portion, and a second coating that covers at least a portion where tension is generated in the bent portion.
    The coating has a boundary between the first coating and the second coating in a direction intersecting the direction in which the tension is generated.
    coil.
  2. 　前記第１被膜と前記第２被膜とは同一材料から形成されている、
    　請求項１に記載のコイル。     The first coating and the second coating are formed of the same material.
    The coil according to claim 1.
  3. 　前記第１被膜と前記第２被膜とは別材料から形成されている、
    　請求項１に記載のコイル。     The first coating and the second coating are formed of different materials.
    The coil according to claim 1.
  4. 　前記第１被膜と前記第２被膜との間において、前記曲げ部の形状に沿った、前記境界とは別の境界を有する、
    　請求項１～３のいずれか一項に記載のコイル。     The first coating and the second coating have a boundary different from the boundary along the shape of the bent portion.
    The coil according to any one of claims 1 to 3.
  5. 　前記第２被膜は、前記曲げ部の全周を被覆している、
    　請求項１～３のいずれか一項に記載のコイル。     The second coating covers the entire circumference of the bent portion.
    The coil according to any one of claims 1 to 3.
  6. 　前記第１被膜は、前記第２被膜の少なくとも一部と重複する、
    　請求項１～５のいずれか一項に記載のコイル。     The first coating overlaps with at least a part of the second coating.
    The coil according to any one of claims 1 to 5.
  7. 　請求項１～６のいずれか一項に記載のコイルと、
    　前記コイルを装着するステータと、を備える、
    　モータ。     The coil according to any one of claims 1 to 6 and the coil.
    A stator for mounting the coil, and the like.
    motor.
  8. 　エッジワイズコイルの製造方法であって、
    　第１被膜の付いた導線を巻回してエッジワイズコイルを形成する処理と、
    　前記導線が曲げられた曲げ部に第２被膜を形成する処理と、を含む、
    　製造方法。     It is a manufacturing method of edgewise coil.
    The process of winding the conductor with the first coating to form an edgewise coil,
    A process of forming a second coating on the bent portion where the conductor is bent, and the like.
    Production method.
PCT/JP2021/021734 2020-07-01 2021-06-08 Coil, motor, and manufacturing method WO2022004298A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024009910A1 (en) * 2022-07-05 2024-01-11 ダイキン工業株式会社 Rectangular wire, coil, and thermal shrinkage tube
JP7518449B2 (en) 2022-07-05 2024-07-18 ダイキン工業株式会社 Flat wire, coils and heat shrink tubing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172713A (en) * 1981-04-16 1982-10-23 Mitsubishi Electric Corp Manufacture of insulated coil
JP2003272916A (en) * 2002-03-15 2003-09-26 Totoku Electric Co Ltd Edgewise coil with resin insulation coating, its manufacturing method, flat electric wire with resin insulation coating, and manufacturing method of the same
JP2016076316A (en) * 2014-10-02 2016-05-12 トヨタ自動車株式会社 Insulated rectangular conductor wire

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172713A (en) * 1981-04-16 1982-10-23 Mitsubishi Electric Corp Manufacture of insulated coil
JP2003272916A (en) * 2002-03-15 2003-09-26 Totoku Electric Co Ltd Edgewise coil with resin insulation coating, its manufacturing method, flat electric wire with resin insulation coating, and manufacturing method of the same
JP2016076316A (en) * 2014-10-02 2016-05-12 トヨタ自動車株式会社 Insulated rectangular conductor wire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024009910A1 (en) * 2022-07-05 2024-01-11 ダイキン工業株式会社 Rectangular wire, coil, and thermal shrinkage tube
JP7518449B2 (en) 2022-07-05 2024-07-18 ダイキン工業株式会社 Flat wire, coils and heat shrink tubing

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