JP2018170181A - Electric wire, coil, and method of manufacturing coil - Google Patents

Electric wire, coil, and method of manufacturing coil Download PDF

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JP2018170181A
JP2018170181A JP2017067069A JP2017067069A JP2018170181A JP 2018170181 A JP2018170181 A JP 2018170181A JP 2017067069 A JP2017067069 A JP 2017067069A JP 2017067069 A JP2017067069 A JP 2017067069A JP 2018170181 A JP2018170181 A JP 2018170181A
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coil
electric wire
wire
heat
fusible
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JP6785702B2 (en
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聖 三浦
Sei Miura
聖 三浦
秀樹 松本
Hideki Matsumoto
秀樹 松本
野内　健太郎
Kentaro Nouchi
健太郎 野内
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SWCC Corp
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SWCC Showa Cable Systems Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • 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
    • H01F41/06—Coil winding
    • H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
    • H01F41/066—Winding non-flat conductive wires, e.g. rods, cables or cords with insulation

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Non-Insulated Conductors (AREA)
  • Insulated Conductors (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide: an electric wire for an inexpensive coil capable of holding constant spacing between lines without disposing a member for a spacer between the lines; a coil; and a method of manufacturing the coil.SOLUTION: An electric wire in one embodiment of the invention includes a fiber layer composed of a black wire and heat fusible thread. The black wire is formed by twisting a plurality of metal wires together. The fiber layer is obtained by winding the heat fusible thread in a circumferential direction of the black wire (a direction intersecting with an axis) around the black wire, followed by coating.SELECTED DRAWING: Figure 1

Description

本発明は、非接触給電装置などに用いられるコイル向け電線、コイルおよびコイルの製造方法に関する。   The present invention relates to an electric wire for a coil used for a non-contact power supply device and the like, a coil, and a method for manufacturing the coil.

近年、電気自動車の給電は、ケーブルを用いる接触式から無線電力伝送技術を利用した非接触式へ変更することが進められている。   In recent years, the power supply of electric vehicles has been changed from a contact type using a cable to a non-contact type using a wireless power transmission technology.

非接触給電の技術は、給電所の路面に埋め込むようにして設けた送電用（１次側）の平面コイルと電気自動車の底部に設けた受電用（２次側）の平面コイルとを数十ｃｍ程度の間隔で対向させることで電力を無線送電することで電気自動車に給電する技術である。   The non-contact power supply technology has several tens of power transmission (primary side) planar coils provided so as to be embedded in the road surface of the power supply station and power reception (secondary side) planar coils provided at the bottom of the electric vehicle. This is a technology for supplying electric power to an electric vehicle by wirelessly transmitting electric power by facing each other at intervals of about cm.

従来、無線電力伝送に用いる平面コイルは、主に、細い複数のエナメル線を撚り合わせて形成したリッツ線を平面的に渦巻き状に巻回して形成する（例えば特許文献１参照）。   Conventionally, a planar coil used for wireless power transmission is mainly formed by spirally winding a litz wire formed by twisting a plurality of thin enamel wires (see, for example, Patent Document 1).

この平面コイルの場合、渦電流を抑制するために（加熱を防ぐために）、リッツ線どうしの間に一定の隙間を空ける必要があり、リッツ線の線間に絶縁材を介在させる目的で、絶縁材としての絶縁糸をリッツ線と平行に巻き付けて形成している。   In the case of this flat coil, in order to suppress the eddy current (to prevent heating), it is necessary to leave a certain gap between the litz wires, and insulation is performed for the purpose of interposing an insulating material between the litz wires. It is formed by winding an insulating thread as a material parallel to the litz wire.

特開２００９−１５８５９８号公報JP 2009-158598 A

このように従来の平面コイルは、リッツ線どうしの間に絶縁糸を介在させて隙間を設けており、隙間の幅を埋める分のスペーサ用の部材（絶縁糸）が必要になり、コスト高になるという問題がある。また、従来の平面コイルは、コイル単体では剛性が低く、コイルの取扱い時にコイル形状が崩れてしまう虞もある。   As described above, the conventional planar coil has a gap by interposing the insulating yarn between the litz wires, and a member for the spacer (insulating yarn) for filling the width of the gap is required, which increases the cost. There is a problem of becoming. Moreover, the conventional planar coil has low rigidity by itself, and there is a possibility that the coil shape may be collapsed when handling the coil.

そこで、本発明は、上記課題を解決するためになされたものであり、線間にスペーサ用の部材を配置することなく線間に一定の隙間を保持可能な低コストなコイル向け電線、コイルおよびコイルの製造方法の提供を目的とする。   Accordingly, the present invention has been made to solve the above-described problems, and is a low-cost electric wire for coils, a coil, and a coil that can maintain a certain gap between the wires without arranging a spacer member between the wires. It aims at providing the manufacturing method of a coil.

上記目的を達成するために、本発明の一態様に係る電線は、複数の金属線を撚り合わせて形成した通電線と、前記通電線の周囲に、前記通電線の軸と交差する方向に巻き付けて被覆した熱融着性の糸状部材からなる繊維層とを具備する。前記通電線は複数の金属線を撚り合わせて形成したものである。前記繊維層は前記熱融着性の糸状部材を前記通電線の周囲に、前記通電線の軸と交差する方向に巻き付けて被覆したものである。   In order to achieve the above object, an electric wire according to an aspect of the present invention is wound around an energized wire formed by twisting a plurality of metal wires in a direction intersecting the axis of the energized wire. And a fiber layer made of a heat-fusible thread-like member coated. The energizing wire is formed by twisting a plurality of metal wires. The fiber layer is formed by winding the heat-fusible thread-like member around the energizing wire in a direction intersecting the axis of the energizing wire.

本発明の一態様に係るコイルは、上記電線を、線間に隙間を空けるように渦巻き状にしたものである。   The coil which concerns on 1 aspect of this invention makes the said electric wire spirally so that the clearance gap may be opened between wires.

本発明によれば、線間にスペーサ用の部材を配置することなく線間に一定の隙間を保持可能な低コストなコイル向け電線、コイルおよびコイルの製造方法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the low cost electric wire for coils which can hold | maintain a fixed clearance gap between lines, and the manufacturing method of a coil can be provided, without arrange | positioning the member for spacers between lines.

本発明の一つの実施の形態の非接触給電装置の構成を示す断面図。Sectional drawing which shows the structure of the non-contact electric power feeder of one embodiment of this invention. 第１実施例の渦巻き状のコイル（円形）の平面図。The top view of the spiral coil (circle) of 1st Example. 図２のコイルの主材である電線の断面図。Sectional drawing of the electric wire which is the main material of the coil of FIG. 図３の電線表面の繊維層の形成に用いる繊維材を示す図。The figure which shows the fiber material used for formation of the fiber layer of the electric wire surface of FIG. 電線を溝に沿わせて重しをのせ電線のがたつきを抑える様子を示す図。The figure which shows a mode that an electric wire is put along a groove | channel and weight is put and it suppresses shakiness of an electric wire. 第２実施例の渦巻き状のコイル（矩形）を示す図。The figure which shows the spiral coil (rectangle) of 2nd Example.

以下、本発明の実施の形態を図面に基づき説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施の形態）
本実施形態に係る非接触給電装置は、１次側の非接触送電装置と２次側の非接触受電装置とを対向配置して構成される。電力を供給する側である１次側の非接触送電装置と電力を受ける側の２次側の非接触受電装置は、コイルの部分の要素はほぼ同じ要素で構成されており、ここでは、一方の側について説明するが、他方の側も同様であることは言うまでもない。 (Embodiment)
The non-contact power feeding device according to the present embodiment is configured by disposing a primary-side non-contact power transmitting device and a secondary-side non-contact power receiving device so as to face each other. The primary-side non-contact power transmission device that supplies power and the secondary-side non-contact power reception device that receives power include substantially the same elements in the coil portion. Although the other side will be described, it goes without saying that the other side is the same.

図１に示すように、例えば１次側の非接触送電装置は、アルミニウム板などの基板１と、この基板１の上面に配置された磁心コア板２と、磁心コア板２の上面に配置されたコイル１０とを備える。さらに、磁心コア板２におけるコイル１０の位置を固定するために、磁心コア板２の上面をモールド樹脂等により皮膜してもよい。   As shown in FIG. 1, for example, a non-contact power transmission device on the primary side is disposed on a substrate 1 such as an aluminum plate, a magnetic core plate 2 disposed on the upper surface of the substrate 1, and an upper surface of the magnetic core plate 2. Coil 10. Furthermore, in order to fix the position of the coil 10 in the magnetic core plate 2, the upper surface of the magnetic core plate 2 may be coated with a mold resin or the like.

図２に示すように、コイル１０の主材としては、リッツ線（金属線）などの電線１１が用いられている。コイル１０は、電線１１を、円形の渦巻き状に巻回して形成したものである。電線１１どうしは、一定間隔の隙間を空けて平らに並べて巻回されている。   As shown in FIG. 2, an electric wire 11 such as a litz wire (metal wire) is used as the main material of the coil 10. The coil 10 is formed by winding the electric wire 11 in a circular spiral shape. The electric wires 11 are wound in a flat manner with a gap between them.

図３に示すように、電線１１は、エナメル線１２を複数撚り合わせて束にして形成したリッツ線１３（撚り線群）と、このリッツ線１３の周囲に被覆形成された繊維層１４とを有する。リッツ線１３（撚り線群）は、束にした状態でほぼ円柱の形状をなすものである。なお、エナメル線１２は、銅線（素線）１２ａの外表面（周囲）をエナメル層１２ｂで絶縁皮膜した絶縁導線の一つである。   As shown in FIG. 3, the electric wire 11 includes a litz wire 13 (twisted wire group) formed by twisting a plurality of enameled wires 12 into a bundle, and a fiber layer 14 coated around the litz wire 13. Have. The litz wire 13 (twisted wire group) has a substantially cylindrical shape in a bundled state. The enameled wire 12 is one of insulated conductors in which the outer surface (periphery) of a copper wire (element wire) 12a is insulated with an enamel layer 12b.

図３に示したリッツ線１３の周囲を覆う被覆である繊維層１４は、図４に示すように、外被の鞘３２の部分とその内側の芯３３の部分との２層構造の繊維材３４を束にしたものであり、以下、この束を「熱融着性の糸３５」または「糸状部材」と称す。繊維層１４はこの熱融着性の糸３５を、リッツ線１３の周面に押しつけて平坦にして巻き付けたもの、またはその後、加熱加工し熱融着性の糸３５を構成する繊維材３４どうしを固着したものである。   As shown in FIG. 4, the fiber layer 14 which is a coating covering the periphery of the litz wire 13 shown in FIG. 3 is a fiber material having a two-layer structure of a sheath 32 portion and an inner core 33 portion. 34 is a bundle, and this bundle is hereinafter referred to as “heat-fusible thread 35” or “thread-like member”. The fiber layer 14 is formed by pressing the heat-fusible yarn 35 against the circumferential surface of the litz wire 13 so as to be flat, or after that, the fiber material 34 constituting the heat-fusible yarn 35 by heat processing. Is fixed.

つまり繊維層１４は、熱融着性の糸３５を、リッツ線１３の周囲に、リッツ線１３の周方向（軸と交差する方向）に巻き付けて被覆したもの、つまり熱融着性の糸３５をリッツ線１３の周囲に平坦に巻き付けたものである。なおリッツ線１３に、熱融着性の糸３５を平坦にオーバーラップさせながら巻き付けることで、リッツ線１３がばらけることなく、かつ屈曲加工したときの形状の維持力を高めることができる。   That is, the fiber layer 14 is formed by winding the heat-fusible yarn 35 around the litz wire 13 around the litz wire 13 in the circumferential direction (direction intersecting the axis), that is, the heat-fusible yarn 35. Is wound flatly around the litz wire 13. Note that the litz wire 13 is wound around the litz wire 13 while being flatly overlapped, so that the litz wire 13 is not broken and the shape maintaining force when bent can be increased.

鞘３２は、融点が例えば１６０℃の結晶性ポリエステル樹脂を材料とするものである。芯３３は、融点が例えば２５０℃の高粘度ポリエステル樹脂を材料とするものである。   The sheath 32 is made of a crystalline polyester resin having a melting point of, for example, 160 ° C. The core 33 is made of a high-viscosity polyester resin having a melting point of 250 ° C., for example.

つまり熱融着性の糸３５を構成する一本一本の繊維材３４は、樹脂製の芯３３と、この芯３３の周囲（外側）に形成された樹脂製の鞘３２との２層構造をなし、鞘３２の融解温度が芯３３よりも低いものである。   In other words, each fiber material 34 constituting the heat-fusible thread 35 has a two-layer structure of a resin core 33 and a resin sheath 32 formed around (outside) the core 33. The melting temperature of the sheath 32 is lower than that of the core 33.

融点の異なる鞘３２と芯３３の２層構造の繊維材３４は、上記した高融点ポリエステル樹脂と低融点ポリエステル樹脂の組み合わせの他、ポリエチレン樹脂とポリプロピレン樹脂との組み合わせ、ポリエステル樹脂とポリエチレン樹脂との組み合わせ、さらに、ポリエステル樹脂とナイロン樹脂（ポリアミド）との組合せなどが考えられる。つまり繊維材３４は、融点の異なる材料を単繊維中に芯３３と鞘３２の状態で紡糸したものであれば、適用可能である。また、融点の異なる複数の繊維材を混合した混繊糸を用いても良い。融点の異なる複数の繊維材における、高融点の線材が融けずに低融点の繊維材が融ける温度で加熱することで、融点の異なる鞘３２と芯３３の２層構造の繊維材３４と同様の効果を得ることができる。   The fiber material 34 having a two-layer structure of the sheath 32 and the core 33 having different melting points includes a combination of a polyethylene resin and a polypropylene resin, a combination of a high melting polyester resin and a low melting polyester resin, and a combination of a polyester resin and a polyethylene resin. Combinations and combinations of polyester resin and nylon resin (polyamide) are also conceivable. That is, the fiber material 34 can be applied as long as a material having a different melting point is spun into a single fiber in the state of the core 33 and the sheath 32. Moreover, you may use the mixed fiber which mixed the some fiber material from which melting | fusing point differs. By heating at a temperature at which the low melting point fiber material melts without melting the high melting point wire in the plurality of fiber materials having different melting points, the same as the fiber material 34 of the two-layer structure of the sheath 32 and the core 33 having different melting points An effect can be obtained.

電線１１は、上記熱融着性の糸３５を、リッツ線１３の周方向（軸と交差する方向）からリッツ線１３の外周部に張力を加えながら押し当てて平坦な形状にして巻き付けたものである。   The electric wire 11 is formed by pressing the heat-fusible thread 35 from the circumferential direction of the litz wire 13 (direction intersecting the axis) while applying tension to the outer periphery of the litz wire 13 to make it flat. It is.

なお、熱融着性の糸３５を平坦に巻き付けた後、１６０℃以上で加熱し、外被の鞘３２の部分を融解させた後、冷却により固化したものが平坦な繊維層１４となる。   In addition, after winding the heat-fusible thread | yarn 35 flatly, it heats at 160 degreeC or more, and after melt | dissolving the part of the sheath 32 of the jacket, what solidified by cooling becomes the flat fiber layer 14.

この繊維層１４では、加熱時に鞘３２の部分だけが融解して隣接どうしで接着しその中の芯３３の部分は融解していないためテープ状（帯状）になる。したがって、繊維層１４を剥がす際に、糸３５を巻き付けた単位でテープ状にきれいに剥がすことができる。また繊維層１４を剥がした後、その内側のリッツ線１３には繊維層１４の残存物が残らないため、加工前のリッツ線１３の状態と同様になる。この結果、例えば終端処理などが容易に行える。   In the fiber layer 14, only the portion of the sheath 32 is melted and bonded to each other when heated, and the portion of the core 33 therein is not melted. Therefore, when the fiber layer 14 is peeled off, it can be peeled off in a tape-like manner in the unit in which the thread 35 is wound. Moreover, since the residue of the fiber layer 14 does not remain in the litz wire 13 inside after peeling off the fiber layer 14, it is the same as the state of the litz wire 13 before processing. As a result, for example, termination processing can be easily performed.

以下、コイル１０の製造方法を説明する。
電線１１としては、例えばリッツ線１３を用いるものとする。また電線１１としては、リッツ線１３以外に、例えば絶縁被覆していない導体（銅やアルミニウムを材料とする線）であってもよい。 Hereinafter, a method for manufacturing the coil 10 will be described.
For example, a litz wire 13 is used as the electric wire 11. In addition to the litz wire 13, the electric wire 11 may be, for example, a conductor (a wire made of copper or aluminum) that is not covered with insulation.

（第１工程：巻回工程）
この第１工程では、糸巻機を用いる。この機器は、従来のものを利用する。糸巻機には、熱融着性の糸３５を巻いたボビンをセットする。 (First step: winding step)
In this first step, a thread winding machine is used. This equipment uses a conventional one. The bobbin around which the heat-fusible yarn 35 is wound is set in the bobbin winder.

この第１工程では、熱融着性の糸３５を、リッツ線１３の外周部に張力を加えながら押し当てて平坦な形状にしてオーバーラップさせながら巻き付ける。これにより、被覆された一本の電線１１を作成できる。   In this first step, the heat-fusible yarn 35 is wound while being applied to the outer peripheral portion of the litz wire 13 while applying tension to the flat shape and overlapping. Thereby, the coated one electric wire 11 can be created.

熱融着性の糸３５として、例えば市販のメルセット「２８０Ｔ４８」、２５０デニール（２８０デシテックス）の糸状部材を使用した。メルセットは登録商標である。   As the heat-bondable yarn 35, for example, a commercially available Melset “280T48”, 250 denier (280 dtex) thread-like member was used. Melset is a registered trademark.

なお、これ以外に、糸巻条件を変えることで、２５０デニール（２８０デシテックス）以上３０００デニール（３３４０デシテックス）以下の熱融着性の糸３５を使用できる。   In addition, by changing the yarn winding conditions, a heat-bondable yarn 35 having a denier of 250 denier (280 dtex) or more and 3000 denier (3340 dtex) or less can be used.

（第２工程：加熱工程）
この第２工程では、加熱機（図５参照）を用いて、第一工程で作成した電線１１を渦巻き状に加工してコイル１０を製造する。 (Second step: heating step)
In the second step, the coil 10 is manufactured by processing the electric wire 11 created in the first step into a spiral shape using a heater (see FIG. 5).

すなわち、加熱機は、図５に示すように、上下に対向配置した金型６１、重し６２と、金型６１および／または重し６２を加熱するヒータ６７と、ヒータ６７に電力を供給する電源６８とを備える。   That is, as shown in FIG. 5, the heater supplies power to the mold 61 and the weight 62 that are vertically opposed to each other, the heater 67 that heats the mold 61 and / or the weight 62, and the heater 67. And a power supply 68.

金型６１には渦巻き状の溝６３が設けられている。溝６３は電線１１を嵌め込み可能な幅と深さで設けられている。   The mold 61 is provided with a spiral groove 63. The groove 63 is provided with a width and depth that allow the electric wire 11 to be fitted therein.

すなわち、電線１１を渦巻き状の溝６３に這わせて嵌め込み、重し６２を配置することで渦巻き状に成型された電線１１の微細ながたつきを押さえ、加熱機で熱融着性の糸３５の鞘３２の融解温度まで加熱して融解した後、冷却することで、電線１１の周囲に熱融着性の糸３５がテープ状に固着した繊維層１４の被覆を形成した渦巻き状のコイル１０（図２参照）を製造する。また、加熱加工を行う際に加圧機（図示せず）を用いて積極的な加圧を行っても良い。加熱加工時に加圧機による加圧を行うことで、形成した渦巻き状コイルの厚みを薄くすることができる。   That is, the electric wire 11 is fitted into the spiral groove 63 and the weight 62 is arranged to suppress the fine rattling of the electric wire 11 formed in a spiral shape, and the heat-fusible yarn is heated by a heater. A spiral coil in which a sheath of the fiber layer 14 in which a heat-fusible thread 35 is fixed in a tape shape is formed around the electric wire 11 by heating to a melting temperature of the sheath 32 of the sheath 35 and then cooling. 10 (see FIG. 2). Moreover, you may perform positive pressurization using a pressurizer (not shown) when performing heat processing. By performing pressurization with a pressurizing machine during heat processing, the thickness of the spiral coil formed can be reduced.

その後、アルミニウム板などの基板１の上面に磁心コア板２を配置し、さらに磁心コア板２の上面に、上記のコイル１０を配置することで、図１に示した非接触給電装置を製造することができる。   Thereafter, the magnetic core plate 2 is disposed on the upper surface of the substrate 1 such as an aluminum plate, and the coil 10 is disposed on the upper surface of the magnetic core plate 2, thereby manufacturing the non-contact power feeding device shown in FIG. be able to.

このように本実施形態の非接触給電装置によれば、複数のエナメル線１２を撚り合わせて形成したリッツ線１３の周囲に、リッツ線１３の周方向（軸と交差する方向）に熱融着性の糸３５を巻き付けて被覆したことで、電線１１としての柔軟な引き回しが可能になると共に、この電線１１を、線間の隙間を等間隔に空けた渦巻き状の溝６３に嵌め込んで加熱した後、冷却することにより、絶縁樹脂などのスペーサを介在させることなく、形状が維持可能なコイル１０を製造できるので、線間にスペーサ用の部材を配置することなく線間に一定の隙間を保持可能な低コストな非接触送電または非接触受電用のコイル向け電線、コイルおよびコイルの製造方法を提供することができる。
なお、線間の隙間を設けないで密巻きに形成した渦巻き状コイルにあっては、より一層の形状維持が可能となる。 As described above, according to the contactless power supply device of the present embodiment, heat fusion is performed around the litz wire 13 formed by twisting a plurality of enamel wires 12 in the circumferential direction of the litz wire 13 (direction intersecting the axis). As a result, the flexible wire 35 can be wound around and covered as a wire 11, and the wire 11 is fitted into a spiral groove 63 with gaps between the wires spaced at equal intervals. Then, by cooling, the coil 10 capable of maintaining the shape can be manufactured without interposing a spacer such as an insulating resin, so that a constant gap is provided between the lines without arranging a spacer member between the lines. It is possible to provide a low-cost non-contact power transmission or non-contact power receiving wire for a coil that can be held, a coil, and a method for manufacturing the coil.
In addition, in the spiral coil formed densely without providing a gap between the wires, the shape can be further maintained.

また、本実施形態では、以下のような効果が得られる。
リッツ線１３の周囲に熱融着性の糸３５を巻回することで、エナメル層１２ｂの外周に融着皮膜を設けた自己融着線を用いるよりも安価にできる。さらには、自己融着線は融着被膜を設けることによりリッツ線１３の外径が大きくなるが、本実施形態は、リッツ線１３の外周に熱融着性の糸３５を平坦な形状にして巻き付けるだけであり、自己融着線と比較して厚みの薄い渦巻き状コイルを作製することができる。 In the present embodiment, the following effects can be obtained.
By winding the heat-fusible yarn 35 around the litz wire 13, the cost can be reduced compared to using a self-bonding wire in which a fusion coating is provided on the outer periphery of the enamel layer 12 b. Further, the self-bonding wire has a larger outer diameter of the litz wire 13 by providing a fusion coating, but in this embodiment, the heat-welding yarn 35 is formed in a flat shape on the outer periphery of the litz wire 13. It is only wound, and a spiral coil having a thickness smaller than that of the self-bonding wire can be produced.

加熱しない状態の熱融着性の糸３５のままでは固着されないため、リッツ線１３の可撓性が保たれるので、例えば熱硬化性樹脂からなる樹脂テープ材を巻回するのに比べて柔軟性にたけ、コイルの成型性が高まる。   Since the heat-fusible thread 35 in an unheated state is not fixed, the flexibility of the litz wire 13 is maintained, so that it is more flexible than winding a resin tape material made of, for example, a thermosetting resin. This increases the moldability of the coil.

糸巻機は既存の設備を利用可能なため、設備投資が最低限で済む。   Since the spooling machine can use the existing equipment, the capital investment is minimal.

隣接する電線１１間に隙間を設けたコイル１０の形状であっても、加熱してリッツ線１３を被覆する繊維層１４が固着することで、コイル１０は剛性を得られるため、コイル１０の取扱い時の形状保持が容易となる。   Even if the shape of the coil 10 is such that a gap is provided between the adjacent electric wires 11, the coil 10 can obtain rigidity by heating and fixing the fiber layer 14 covering the litz wire 13. The shape can be easily maintained.

リッツ線１３の皮膜にリッツ線１３そのものを融着する樹脂などを用いていないため、加熱してコイル１０の形状を固定した後であっても、固着した繊維層１４をはぎ取ることで、加工前のリッツ線１３に容易に戻すことができ、また終端処理が容易に行える。   Since a resin for fusing the litz wire 13 itself is not used for the coating of the litz wire 13, even after heating and fixing the shape of the coil 10, the fixed fiber layer 14 is peeled off before processing. The litz wire 13 can be easily returned to, and the termination process can be easily performed.

上記実施例では、渦巻き状コイル１０の外形を円形としたが、これ以外に、金型６１の溝６３の配置および形状を変えることで、例えば図７に示すように、外形が矩形の渦巻き状コイル２０や外形が楕円形の渦巻き状コイル（図示せず）なども容易に製造することができる。   In the above embodiment, the outer shape of the spiral coil 10 is circular. However, by changing the arrangement and shape of the groove 63 of the mold 61, for example, as shown in FIG. The coil 20 and a spiral coil (not shown) having an elliptical outer shape can be easily manufactured.

以上、本発明の実施の形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施することが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これらの実施形態やその変形例は、発明の範囲や要旨に含まれると共に、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   As mentioned above, although embodiment of this invention was described, these embodiment was shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

１…アルミ板（基板）、２…磁心コア板、１０、２０…コイル、１１…電線、１２…エナメル線、１３…リッツ線（通電線）、１４…繊維層、３２…鞘、３３…芯、３４…繊維材、３５…繊維材の束（熱融着性の糸）、６１…金型、６２…重し、６３…溝、６７…ヒータ、６８…電源。   DESCRIPTION OF SYMBOLS 1 ... Aluminum plate (board | substrate), 2 ... Magnetic core plate 10, 20 ... Coil, 11 ... Electric wire, 12 ... Enamel wire, 13 ... Litz wire (conduction wire), 14 ... Fiber layer, 32 ... Sheath, 33 ... Core , 34 ... fiber material, 35 ... bundle of fiber materials (heat-bondable yarn), 61 ... mold, 62 ... weight, 63 ... groove, 67 ... heater, 68 ... power supply.

Claims (11)

複数の金属線を撚り合わせて形成した通電線と、
前記通電線に、その周方向に巻き付けた熱融着性の糸と
を具備することを特徴とする電線。 A conducting wire formed by twisting a plurality of metal wires;
An electric wire comprising a heat-fusible thread wound around the current-carrying wire in a circumferential direction thereof. 前記熱融着性の糸を構成する一本一本の繊維材が、樹脂製の芯部と、前記芯部の外側に形成された樹脂製の鞘部との２層構造をなし、
前記鞘部の融解温度が前記芯部よりも低いことを特徴とする請求項１に記載の電線。 Each fiber material constituting the heat-fusible yarn has a two-layer structure of a resin core part and a resin sheath part formed on the outside of the core part,
The electric wire according to claim 1, wherein a melting temperature of the sheath portion is lower than that of the core portion. 前記熱融着性の糸は、融点の異なる２種類の繊維材を混合してなることを特徴とする請求項１に記載の電線。   The electric wire according to claim 1, wherein the heat-fusible yarn is formed by mixing two kinds of fiber materials having different melting points. 前記熱融着性の糸を構成する繊維材の束が、２５０デニール（２８０デシテックス）以上３０００デニール（３３４０デシテックス）以下のものであることを特徴とする請求項１乃至３いずれか１項に記載の電線。   The bundle of fiber materials constituting the heat-fusible yarn is 250 denier (280 dtex) or more and 3000 denier (3340 dtex) or less. Electric wire. 請求項１乃至４いずれか１項に記載の前記電線を、平坦な渦巻き状にしたコイル。   The coil which made the said electric wire of any one of Claims 1 thru | or 4 into the flat spiral shape. 線間に隙間を設けた請求項５に記載のコイル。   The coil according to claim 5, wherein a gap is provided between the wires. 外形が円形または多角形である請求項５または請求項６いずれかに記載のコイル。   The coil according to claim 5 or 6, wherein the outer shape is circular or polygonal. 前記隙間が等間隔である請求項５乃至７いずれか１項に記載のコイル。   The coil according to any one of claims 5 to 7, wherein the gaps are equally spaced. 金属製の基板と、
前記基板の上に配置した磁心コア板と、
前記磁心コア板の上に配置した請求項５乃至８いずれか１項に記載の前記コイルと
を具備する非接触給電装置。 A metal substrate;
A magnetic core plate disposed on the substrate;
The non-contact electric power feeder which comprises the said coil of any one of Claim 5 thru | or 8 arrange | positioned on the said magnetic core board. 請求項１乃至４いずれか１項に記載の前記電線を渦巻き状の溝に嵌め込んで、前記熱融着性の糸の融解温度まで加熱した後、冷却することで、前記通電線の周囲に固着した繊維層を形成することを特徴とするコイルの製造方法。   The electric wire according to any one of claims 1 to 4 is fitted into a spiral groove, heated to a melting temperature of the heat-fusible yarn, and then cooled, so that the electric wire is surrounded. A method for manufacturing a coil, comprising forming a fixed fiber layer. 前記電線を加圧しつつ加熱する請求項１０記載のコイルの製造方法。   The coil manufacturing method according to claim 10, wherein the electric wire is heated while being pressurized.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018170480A (en) * 2017-03-30 2018-11-01 パナソニック株式会社 Transmission coil and power transmission device
JP2020107776A (en) * 2018-12-28 2020-07-09 昭和電線ケーブルシステム株式会社 Coil and manufacturing method of the same
JP2020174142A (en) * 2019-04-11 2020-10-22 昭和電線ケーブルシステム株式会社 Coil device and manufacturing method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018170480A (en) * 2017-03-30 2018-11-01 パナソニック株式会社 Transmission coil and power transmission device
US10950379B2 (en) 2017-03-30 2021-03-16 Panasonic Corporation Transmission coil and power transmission apparatus
JP2020107776A (en) * 2018-12-28 2020-07-09 昭和電線ケーブルシステム株式会社 Coil and manufacturing method of the same
JP7246185B2 (en) 2018-12-28 2023-03-27 昭和電線ケーブルシステム株式会社 Coil and coil manufacturing method
JP2020174142A (en) * 2019-04-11 2020-10-22 昭和電線ケーブルシステム株式会社 Coil device and manufacturing method thereof

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