JP5837763B2 - Electrical wire - Google Patents

Electrical wire Download PDF

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JP5837763B2
JP5837763B2 JP2011122428A JP2011122428A JP5837763B2 JP 5837763 B2 JP5837763 B2 JP 5837763B2 JP 2011122428 A JP2011122428 A JP 2011122428A JP 2011122428 A JP2011122428 A JP 2011122428A JP 5837763 B2 JP5837763 B2 JP 5837763B2
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conductive
electric wire
hollow conductor
conductor tube
insulating film
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JP2012252798A (en
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欣也 杉江
欣也 杉江
弘司 平池
弘司 平池
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Kanzacc
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本発明は、モーター(電動機)や発電機のコイル、あるいは、送電線に好適な電線に関する。   The present invention relates to an electric wire suitable for a motor (electric motor), a coil of a generator, or a power transmission line.

モーターのステーターは、ステーターコアの周囲にステーターコイルを巻回したものである。このコイル線に所定の周波数帯域の電流を流してモーターを駆動する。ここで、コイル線に高周波電流が流れると、電流密度がコイル線の表面で高くなり、コイル線の内部で低くなる表皮効果が生じる。周波数が高くなるほど電流が表面へ集中し、その結果、電線の電流抵抗値が増してコイル線内の電流密度が低下することとなる。また、複数の導体線を撚って1本のコイル線を形成している場合には、コイル線内において近接効果が生じ、導体線内を均一に電流が流れない。   The motor stator is obtained by winding a stator coil around a stator core. The motor is driven by passing a current in a predetermined frequency band through the coil wire. Here, when a high-frequency current flows through the coil wire, a skin effect occurs in which the current density increases on the surface of the coil wire and decreases inside the coil wire. As the frequency increases, the current concentrates on the surface, and as a result, the current resistance value of the electric wire increases and the current density in the coil wire decreases. In addition, when a single coil wire is formed by twisting a plurality of conductor wires, a proximity effect occurs in the coil wire, and current does not flow uniformly in the conductor wire.

文献1には、表皮効果および近接効果を低減、抑制するための技術が記載されている。図11に示すように、文献1の電線100は、中心に配置された一の中空銅電線112aと、その周囲に等角度、等間隔に配置された複数の他の中空銅電線112bを備えている。この電線100は、各銅電線112を中空にすることで、表皮効果による影響を軽減している。また、一の中空銅電線112aの肉厚を他の中空銅電線112bの肉厚よりも薄くすること、および各銅電線112が等角度、等間隔に配置されることによって、近接効果を抑制している。   Document 1 describes a technique for reducing and suppressing the skin effect and proximity effect. As shown in FIG. 11, the electric wire 100 of Literature 1 includes one hollow copper electric wire 112 a arranged at the center and a plurality of other hollow copper electric wires 112 b arranged at equal angles and at equal intervals around the hollow copper electric wire 112 a. Yes. The electric wire 100 reduces the influence of the skin effect by making each copper electric wire 112 hollow. Moreover, the proximity effect is suppressed by making the thickness of one hollow copper electric wire 112a thinner than the thickness of the other hollow copper electric wires 112b and by arranging the copper electric wires 112 at equal angles and at equal intervals. ing.

しかし、各銅電線112は中空であるため、低周波電流を高い電流密度で流すことができない。よって、表皮効果及び近接効果を抑制することと、低周波電流を高い電流密度で流すことの両立は困難であった。   However, since each copper electric wire 112 is hollow, a low frequency current cannot be flowed at a high current density. Therefore, it is difficult to suppress both the skin effect and the proximity effect and to flow a low frequency current at a high current density.

特開2008−53143号公報JP 2008-53143 A

本発明は、上記課題に着目して為された発明であり、表皮効果および近接効果を抑制し、高周波数又は低周波数のいずれにおいても高い電流密度の電流を流すことのできる電線を提供することを解決課題とする。   The present invention is an invention made by paying attention to the above-mentioned problems, and provides an electric wire capable of suppressing a skin effect and a proximity effect and allowing a current having a high current density to flow at either a high frequency or a low frequency. Is a solution issue.

(1)上記課題を解決するための手段として、本発明の電線は、中空導体管と、表面の全部または一部が絶縁膜により被覆された帯状の導電性線条体を幅方向に折り重ねた折り重ね導電性線条体とを備え、前記折り重ね導電性線条体が、前記中空導体管の内部にあり、前記中空導体管と一体化されたことを特徴とする。
(2)また、本発明の電線は、中空導体管と、表面の全部または一部が絶縁膜により個別に被覆された複数の導電性線条体とを備え、前記複数の導電性線条体が、前記中空導体管の内部にあり、積層され、前記中空導体管と一体化されたことを特徴とする。
(3)また、本発明の電線は、中空導体管と、複数の導電性線条体が束ねられ、外表面の全部または一部が絶縁膜により被覆された導電性線条体束とを備え、前記導電性線条体束が、前記中空導体管の内部にあり、中空導体管と一体化されたことを特徴とする。
(4)また、本発明の電線は、前記導電性線条体の短径が表皮深さの2倍より小さいことを特徴とする。ここで、導電性線条体の断面が多角形の場合、短径は最小辺の長さとする。
(5)また、本発明の電線は、前記絶縁膜の表面の少なくとも一部に電磁遮蔽層が形成されたことを特徴とする。
(6)また、本発明の電線は、前記中空導体管の内周面に面した導電性線条体の一部が絶縁膜により被覆されていないことを特徴とする。
(7)また、本発明の電線は、前記中空導体管の肉厚は、表皮深さより小さいことを特徴とする。ここで、中空導体管の肉厚が一定でない場合、肉厚は最小肉厚とする。
(8)また、本発明の電線の製造方法は、テープ状導体を準備する工程、表面の全部または一部が絶縁膜により被覆された帯状の導電性線条体を準備する工程、前記帯状の導電性線条体を幅方向に折り重ねる工程、前記折り重ねられた導電性線条体を前記テープ状導体に載せる工程、前記テープ状導体を丸め、長手端面を接合して中空導体管を作製し、前記中空導体管内に前記折り重ねられた導電性線条体を収納する工程、前記中空導体管および前記折り重ねられた導電性線条体を一体化する工程を含むことを特徴とする。
(9)また、本発明の電線の製造方法は、テープ状導体を準備する工程、表面の全部または一部が絶縁膜により個別に被覆された複数の導電性線条体を準備する工程、前記複数の導電性線条体を積層する工程、前記積層された導電性線条体をテープ状導体に載せる工程、前記テープ状導体を丸め、長手端面を接合して中空導体管を作製し、前記中空導体管内に前記積層された導電性線条体を収納する工程、前記中空導体管および前記積層された導電性線条体を一体化する工程を含むことを特徴とする。
(10)また、本発明の電線の製造方法は、テープ状導体を準備する工程、複数の導電性線条体を束ねて導電性線条体束を形成する工程、前記導電性線条体束の外表面の全部または一部に絶縁膜を形成する工程、前記絶縁膜に被覆された導電性線条体束をテープ状導体に載せる工程、前記テープ状導体を丸め、長手端面を接合して中空導体管を作製し、前記中空導体管内に前記絶縁膜に被覆された導電性線条体束を収納する工程、前記中空導体管および前記絶縁膜に被覆された導電性線条体束を一体化する工程を含むことを特徴とする。
(11)また、本発明の電線の製造方法は、前記中空導体管の内周面と接する絶縁膜の一部を剥離する工程を含むことを特徴とする。
(1) As a means for solving the above-mentioned problems, the electric wire of the present invention comprises a hollow conductor tube and a strip-shaped conductive wire body whose surface is entirely or partially covered with an insulating film, folded in the width direction. And the folded conductive filament is in the hollow conductor tube and is integrated with the hollow conductor tube.
(2) Moreover, the electric wire of the present invention includes a hollow conductor tube and a plurality of conductive filaments each having a surface entirely or partially covered with an insulating film, and the plurality of conductive filaments. Is inside the hollow conductor tube, laminated and integrated with the hollow conductor tube.
(3) Moreover, the electric wire of the present invention includes a hollow conductor tube and a conductive wire bundle in which a plurality of conductive wire bodies are bundled and all or part of the outer surface is covered with an insulating film. The conductive filament bundle is inside the hollow conductor tube and is integrated with the hollow conductor tube.
(4) Moreover, the electric wire of the present invention is characterized in that the short diameter of the conductive filament is smaller than twice the skin depth. Here, when the cross section of the conductive filament is a polygon, the minor axis is the length of the minimum side.
(5) The electric wire of the present invention is characterized in that an electromagnetic shielding layer is formed on at least a part of the surface of the insulating film.
(6) Further, the electric wire of the present invention is characterized in that a part of the conductive wire body facing the inner peripheral surface of the hollow conductor tube is not covered with an insulating film.
(7) Moreover, the electric wire of the present invention is characterized in that the thickness of the hollow conductor tube is smaller than the skin depth. Here, when the thickness of the hollow conductor tube is not constant, the thickness is set to the minimum thickness.
(8) Moreover, the manufacturing method of the electric wire of the present invention includes a step of preparing a tape-shaped conductor, a step of preparing a strip-shaped conductive filament body whose surface is entirely or partially covered with an insulating film, A step of folding the conductive filament in the width direction, a step of placing the folded conductive filament on the tape-shaped conductor, rounding the tape-shaped conductor, and joining the longitudinal end surfaces to produce a hollow conductor tube And housing the folded conductive filament in the hollow conductor tube, and integrating the hollow conductor tube and the folded conductive filament.
(9) Moreover, the manufacturing method of the electric wire of the present invention includes a step of preparing a tape-shaped conductor, a step of preparing a plurality of conductive filaments in which all or part of the surface is individually covered with an insulating film, A step of laminating a plurality of conductive filaments, a step of placing the laminated conductive filaments on a tape-shaped conductor, rounding the tape-shaped conductor, and joining a longitudinal end surface to produce a hollow conductor tube, It includes a step of housing the laminated conductive filaments in a hollow conductor tube, and a step of integrating the hollow conductor tube and the laminated conductive filaments.
(10) Moreover, the manufacturing method of the electric wire of the present invention includes a step of preparing a tape-shaped conductor, a step of bundling a plurality of conductive filaments to form a conductive filament bundle, and the conductive filament bundle Forming an insulating film on all or a part of the outer surface of the substrate, placing the conductive filament bundle covered with the insulating film on the tape-shaped conductor, rounding the tape-shaped conductor, and joining the longitudinal end surfaces A step of producing a hollow conductor tube and storing a bundle of conductive filaments covered with the insulating film in the hollow conductor tube, and integrating the bundle of conductive filaments covered with the hollow conductor tube and the insulating film Characterized by including a step of converting.
(11) Moreover, the manufacturing method of the electric wire of this invention includes the process of peeling one part of the insulating film which contact | connects the inner peripheral surface of the said hollow conductor pipe | tube.

上記(1)の電線によれば、折り重ね導電性線条体が一の導体であるため、電線内において近接効果が生じない。よって、折り重ね導電性線条体内の電流密度を均一にして、高周波数又は低周波数のいずれにおいても高い電流密度で電流を流すことができる。また、導電性線条体を絶縁膜とともに折り重ねることで、折り重なった導電性線条体間には絶縁膜が介在する。よって、折り重ね導電性線条体の表面積を広く確保できるので表皮効果による電流密度の低下を軽減することができる。また、低周波数において電流密度の高い電流を流すこともできる。   According to the electric wire of (1) above, since the folded conductive filament is one conductor, the proximity effect does not occur in the electric wire. Therefore, the current density in the folded conductive filaments can be made uniform, and the current can flow at a high current density at either a high frequency or a low frequency. Further, by folding the conductive filaments together with the insulating film, an insulating film is interposed between the folded conductive filaments. Therefore, since the surface area of the folded conductive filaments can be secured widely, a decrease in current density due to the skin effect can be reduced. In addition, a current having a high current density can be passed at a low frequency.

上記(2)の電線によれば、複数の導電性線条体を積層することにより、導電性線条体の総表面積を広く確保できるので表皮効果による電流密度の低下を軽減することができる。   According to the electric wire of the above (2), by laminating a plurality of conductive filaments, the total surface area of the conductive filaments can be secured widely, so that a decrease in current density due to the skin effect can be reduced.

上記(3)の電線によれば、複数の導電性線条体を束ねることにより、電気的に一体の導電性線条体束を構成するため、電線内において近接効果が生じない。よって、導電性線条体内の電流密度を均一にして、高周波数又は低周波数のいずれにおいても高い電流密度で電流を流すことができる。   According to the electric wire of (3) above, since a plurality of conductive filaments are bundled to form an electrically integrated conductive filament bundle, no proximity effect is produced in the electric wire. Therefore, the current density in the conductive striatum can be made uniform, and the current can flow at a high current density at either high frequency or low frequency.

上記(4)の電線によれば、導電性線条体の短径が表皮深さの2倍より薄いため、表皮効果による影響を受けない。よって、導電性線条体内の電流密度を均一にして、電線の電流抵抗値を低減させることができる。   According to the electric wire of (4) above, since the minor axis of the conductive filament is thinner than twice the skin depth, it is not affected by the skin effect. Therefore, the current density in the conductive filament can be made uniform, and the current resistance value of the electric wire can be reduced.

上記(5)の電線によれば、絶縁膜の表面に電磁遮蔽層を形成することによって、隣接する電線間に生じる近接効果を抑制することができる。また、電線内に、絶縁膜に被覆された導電性線条体が複数存在する場合には、電線内の導電性線条体間に生じる近接効果を抑制することができる。   According to the electric wire of said (5), the proximity effect produced between adjacent electric wires can be suppressed by forming an electromagnetic shielding layer on the surface of an insulating film. Moreover, when there are a plurality of conductive filaments covered with an insulating film in the electric wire, the proximity effect generated between the conductive filaments in the electric wire can be suppressed.

上記(6)の電線によれば、中空導体管の内周面に面する導電性線条体の表面が絶縁膜により被覆されていないため、導電性線条体の表面が中空導体管の内周面に対して露出し、一体化することで、導電性線条体と中空導体管とが接して導通する。よって、導電性線条体と中空導体管とが電気的に一体の導体となり、電線内において近接効果が生じない。   According to the electric wire of (6) above, since the surface of the conductive wire body facing the inner peripheral surface of the hollow conductor tube is not covered with the insulating film, the surface of the conductive wire body is the inner surface of the hollow conductor tube. By exposing and integrating with respect to the peripheral surface, the conductive linear body and the hollow conductor tube come into contact with each other and are electrically connected. Therefore, the conductive wire body and the hollow conductor tube become an electrically integrated conductor, and the proximity effect does not occur in the electric wire.

上記(7)の電線によれば、中空導体管の肉厚が表皮深さよりも薄いため、所定の周波数帯域で電流を流す場合において、表皮効果による影響を受けない。よって、中空導体管内の電流密度を均一にして、電線の電流抵抗値を低減させることができる。   According to the electric wire of (7) above, since the thickness of the hollow conductor tube is thinner than the skin depth, it is not affected by the skin effect when a current is passed in a predetermined frequency band. Therefore, the current density in the hollow conductor tube can be made uniform, and the current resistance value of the electric wire can be reduced.

上記(8)〜(11)の電線の製造方法によれば、中空導体管および導電性線条体の長さに制限がないため、長尺の中空導体管に挿入された導電性線条体を連続的に作製することができる。   According to the method for producing an electric wire of (8) to (11) above, since there is no restriction on the length of the hollow conductor tube and the conductive wire body, the conductive wire body inserted into the long hollow conductor tube. Can be produced continuously.

(a)本発明に用いられる導電性線条体の断面図、(b)本発明に用いられる折り重ね導電性線条体の断面図、(c)本発明に用いられる折り重ね導電性線条体と中空導体管の断面図、(d)本発明の電線の断面図、(e)本発明の電線の断面図(A) Cross-sectional view of conductive filament used in the present invention, (b) Cross-sectional view of folded conductive filament used in the present invention, (c) Folded conductive filament used in the present invention Sectional view of body and hollow conductor tube, (d) Sectional view of electric wire of the present invention, (e) Sectional view of electric wire of the present invention 折り重ね導電性線条体を中空導体管に連続的に挿入する製法の説明図Explanatory drawing of a manufacturing method for continuously inserting folded conductive filaments into a hollow conductor tube (a)電磁遮蔽層が形成された電線の断面図、(b)露出部が形成された電線の断面図(A) Cross-sectional view of an electric wire on which an electromagnetic shielding layer is formed, (b) Cross-sectional view of an electric wire on which an exposed portion is formed (a)本発明の他の電線の断面図、(b)露出部が形成された電線の断面図(A) Cross-sectional view of another electric wire of the present invention, (b) Cross-sectional view of an electric wire with an exposed portion formed 本発明の電線の表皮効果および近接効果軽減状況を示すグラフThe graph which shows the skin effect and proximity effect reduction condition of the electric wire of this invention (a)本発明の他の電線の断面図、(b)露出部が形成された電線の断面図、(c)電磁遮蔽層が形成された電線の断面図(A) Cross-sectional view of another electric wire of the present invention, (b) Cross-sectional view of the electric wire on which an exposed portion is formed, (c) Cross-sectional view of the electric wire on which an electromagnetic shielding layer is formed (a)本発明に用いられる導電性線条体束と中空導体管の断面図、(b)本発明の他の電線の断面図、(c)電磁遮蔽層が形成された電線の断面図(A) Cross-sectional view of conductive wire bundle and hollow conductor tube used in the present invention, (b) Cross-sectional view of another electric wire of the present invention, (c) Cross-sectional view of an electric wire on which an electromagnetic shielding layer is formed (a)本発明に用いられる導体線と中空導体管の断面図、(b)露出部が形成された電線の断面図(A) Cross-sectional view of conductor wire and hollow conductor tube used in the present invention, (b) Cross-sectional view of electric wire with exposed portion formed (a)本発明の電線の他の形態の断面図、(b)本発明の電線の他の形態の断面図、(c)本発明の電線の他の形態の断面図、(d)本発明の電線の他の形態の断面図、(e)本発明の電線の他の形態の断面図(A) Cross-sectional view of another form of the electric wire of the present invention, (b) Cross-sectional view of another form of the electric wire of the present invention, (c) Cross-sectional view of another form of the electric wire of the present invention, (d) The present invention Sectional drawing of the other form of an electric wire of (e) Sectional drawing of the other form of the electric wire of this invention (a)本発明の電線の他の形態の断面図、(b)本発明の電線の他の形態の断面図、(c)本発明の電線の他の形態の断面図、(d)本発明の電線の他の形態の断面図、(e)本発明の電線の他の形態の断面図(A) Cross-sectional view of another form of the electric wire of the present invention, (b) Cross-sectional view of another form of the electric wire of the present invention, (c) Cross-sectional view of another form of the electric wire of the present invention, (d) The present invention Sectional drawing of the other form of an electric wire of (e) Sectional drawing of the other form of the electric wire of this invention 従来の電線の断面図Cross section of conventional wire

以下、図面に従って、本発明の電線を説明する。ここで、本発明において、短径とは導電性線条体の断面が多角形の場合、最小辺の長さとする。   Hereinafter, the electric wire of the present invention will be described with reference to the drawings. Here, in the present invention, the minor axis is the length of the minimum side when the cross section of the conductive filament is a polygon.

図1(d)に示すように、本発明の電線10aは、中空導体管15b、折り重ね導電性線条体12b、及び絶縁膜13から構成される。   As shown in FIG. 1 (d), the electric wire 10 a of the present invention includes a hollow conductor tube 15 b, a folded conductive filament 12 b, and an insulating film 13.

中空導体管15bは、折り重ね導電性線条体12bおよび絶縁膜13を収納するものである。また、中空導体管15bは、引抜加工により、正円形状の中空導体管15aを矩形に変形させたものである。図1(c)に示すように、中空導体管15aは、導電性を有する管である。その形状は正円形状に限られず、楕円形状または四角形状であってもよい。その肉厚は例えば0.4mmである。しかし、肉厚はこれに限られず、使用周波数での表皮深さよりも薄ければよい。また、肉厚は場所により異なってもよい。中空導体管15aの材質は代表的には銅である。しかし、材質はこれに限られず、電気伝導度、加工性、コスト、耐久性等を考慮して、銅合金、アルミニウム、アルミニウム合金等から適宜選択できる。また、これらを組み合わせて製造されたものであってもよい。   The hollow conductor tube 15b accommodates the folded conductive filament 12b and the insulating film 13. Further, the hollow conductor tube 15b is obtained by deforming a perfect circular hollow conductor tube 15a into a rectangle by drawing. As shown in FIG. 1C, the hollow conductor tube 15a is a conductive tube. The shape is not limited to a perfect circle shape, and may be an elliptical shape or a quadrangular shape. The wall thickness is 0.4 mm, for example. However, the wall thickness is not limited to this, and may be thinner than the skin depth at the operating frequency. The wall thickness may vary depending on the location. The material of the hollow conductor tube 15a is typically copper. However, the material is not limited to this, and can be appropriately selected from copper alloy, aluminum, aluminum alloy and the like in consideration of electrical conductivity, workability, cost, durability, and the like. Moreover, what was manufactured combining these may be used.

折り重ね導電性線条体12bは、帯状の導電性線条体12aを幅方向に折り重ねて形成されたものである。導電性線条体12aは、図1(a)に示すように、導電性を有し、帯状に形成されている。導電性線条体12aの短径(厚み)は、0.6mmである。しかし、短径はこれに限られず、使用周波数での表皮深さの2倍より薄ければよい。導電性線条体12aの材質も、代表的には銅である。しかし、材質は上記中空導体管15aと同様に電気伝導度等を考慮して他の材質を適宜選択できる。図1(b)に示すように、折り重ね導電性線条体12bの断面は略S字状である。   The folded conductive filament 12b is formed by folding a strip-shaped conductive filament 12a in the width direction. As shown in FIG. 1A, the conductive linear body 12a has conductivity and is formed in a strip shape. The short diameter (thickness) of the conductive linear body 12a is 0.6 mm. However, the minor axis is not limited to this, and may be thinner than twice the skin depth at the operating frequency. The material of the conductive linear body 12a is also typically copper. However, other materials can be appropriately selected in consideration of the electric conductivity and the like in the same manner as the hollow conductor tube 15a. As shown in FIG. 1B, the cross section of the folded conductive filament 12b is substantially S-shaped.

絶縁膜13は、図1(a)に示すように、導電性線条体12aを被覆している。膜厚は、例えば30μmである。膜厚は、絶縁が確保されれば、均一でなくても良い。その材質としては、例えばポリエステル、ポリアミドイミドからなる単層又は多層のものが使用できる。また、場所により材質が異なっていても良い。図1(b)に示すように、絶縁膜13は、折り重ね導電性線条体12bとともに折り重ねられている。   As shown in FIG. 1A, the insulating film 13 covers the conductive filament 12a. The film thickness is, for example, 30 μm. The film thickness may not be uniform as long as insulation is ensured. As the material, for example, a single layer or a multilayer made of polyester or polyamideimide can be used. The material may be different depending on the location. As shown in FIG. 1B, the insulating film 13 is folded together with the folded conductive linear body 12b.

本発明の電線10aの製法を、図1に従って説明する。先ず図1(a)に示すように、絶縁膜13に被覆された帯状の導電性線条体12aを準備する。次に、帯状の導電性線条体12aを絶縁膜13とともにその幅方向に折り重ねて、図1(b)に示された断面が略S字状の折り重ね導電性線条体12bを形成する。次に、図1(c)に示すように、折り重ね導電性線条体12bを中空導体管15aに挿入する。次に、引抜加工により、中空導体管15aを折り重ね導電性線条体12bの外形に密着するように絞り、中空導体管15a、折り重ね導電性線条体12b、および絶縁膜13を一体化して、図1(d)に示す電線10aを形成する。図1(e)に示すように、中空導体管15bの外周面を絶縁膜13で被覆してもよい。   The manufacturing method of the electric wire 10a of this invention is demonstrated according to FIG. First, as shown in FIG. 1A, a strip-shaped conductive filament 12a covered with an insulating film 13 is prepared. Next, the strip-shaped conductive filament 12a is folded in the width direction together with the insulating film 13 to form a folded conductive filament 12b having a substantially S-shaped cross section shown in FIG. To do. Next, as shown in FIG. 1 (c), the folded conductive filament 12b is inserted into the hollow conductor tube 15a. Next, by drawing, the hollow conductor tube 15a is squeezed so that the hollow conductor tube 15a is in close contact with the outer shape of the folded conductive filament 12b, and the hollow conductor tube 15a, the folded conductive filament 12b, and the insulating film 13 are integrated. Thus, the electric wire 10a shown in FIG. As shown in FIG. 1 (e), the outer peripheral surface of the hollow conductor tube 15 b may be covered with an insulating film 13.

図2は、折り重ね導電性線条体12bを中空導体管15aに連続的に挿入し、折り重ね導電性線条体12bと中空導体管15aを一体化する製造方法の例を示す。工程は図2の右上から左下へ向かって進む。図の右上の方は、折り重ね導電性線条体12bを、予め準備されたテープ状導体21(例えば薄い銅板)に載せる工程を示す。図2の中央は、テープ状導体21を丸めて長手端面を溶接し、中空導体管15aを作成する工程を示す。この工程で中空導体管15aに折り重ね導電性線条体12bを収納する。図2の左下の方は、密着性を高めるため、引抜加工により、折り重ね導電性線条体12bおよび中空導体管15aを一体化する工程を示す。この図の製法によれば、中空導体管15b及び折り重ね導電性線条体12bの長さに制限がないため、長尺の中空導体管15bに挿入された折り重ね導電性線条体12bを連続的に作成することができる。この図において、中空導体管15aは、断面S字状の折り重ね導電性線条体12bの側面側で溶接されているが、この溶接位置は側面側に限定されず、折り重ね導電性線条体12bの上面側または下面側で溶接されてもよい。   FIG. 2 shows an example of a manufacturing method in which the folded conductive filament 12b is continuously inserted into the hollow conductor tube 15a, and the folded conductive filament 12b and the hollow conductor tube 15a are integrated. The process proceeds from the upper right to the lower left in FIG. The upper right side of the figure shows a step of placing the folded conductive filament 12b on a tape-shaped conductor 21 (for example, a thin copper plate) prepared in advance. The center of FIG. 2 shows a step of rounding the tape-shaped conductor 21 and welding the longitudinal end face to create the hollow conductor tube 15a. In this step, the conductive conductor 12b is folded and accommodated in the hollow conductor tube 15a. The lower left side of FIG. 2 shows a step of integrating the folded conductive filament 12b and the hollow conductor tube 15a by drawing to improve adhesion. According to the manufacturing method of this figure, since the length of the hollow conductor tube 15b and the folded conductive wire 12b is not limited, the folded conductive wire 12b inserted into the long hollow conductor tube 15b is used. Can be created continuously. In this figure, the hollow conductor tube 15a is welded on the side surface side of the folded conductive filament 12b having an S-shaped cross section, but the welding position is not limited to the side surface, and the folded conductive filament is not limited to the side surface. You may weld on the upper surface side or lower surface side of the body 12b.

図1(d)に示すように、一体化された中空導体管15bの断面外形は矩形である。その断面寸法は、例えば高さ2mm×幅3mmである。折り重ね導電性線条体12bは絶縁膜13を介して中空導体管15bと一体化されている。折り重ね導電性線条体12bの折り重ね部17には絶縁膜13が介在している。   As shown in FIG.1 (d), the cross-sectional external shape of the integrated hollow conductor pipe | tube 15b is a rectangle. The cross-sectional dimension is, for example, 2 mm high × 3 mm wide. The folded conductive filament 12b is integrated with the hollow conductor tube 15b via the insulating film 13. An insulating film 13 is interposed in the folded portion 17 of the folded conductive filament 12b.

本発明の電線10aは、例えば、モーターのコイル線として使用される。この際、電線10aには約8kHzの周波数で電流が流される。ここで、周波数が8kHzにおける銅の表皮深さは約0.8mmである。   The electric wire 10a of this invention is used as a coil wire of a motor, for example. At this time, a current flows through the electric wire 10a at a frequency of about 8 kHz. Here, the skin depth of copper at a frequency of 8 kHz is about 0.8 mm.

(1)本発明の電線10aは、折り重ね導電性線条体12bが一の導体であるため、電線10a内において近接効果が生じない。よって、折り重ね導電性線条体12b内の電流密度は均一であり、高周波数又は低周波数のいずれにおいても高い電流密度で電流を流すことができる。
(2)また、折り重ね導電性線条体12bの短径(厚み)が0.6mmであり、銅の表皮深さ0.8mmの2倍より薄いため、8kHzの周波数で電流を流す場合において、表皮効果による影響を受けない。よって、折り重ね導電性線条体12b内の電流密度を均一にして、電線10aの電流抵抗値を低減させることができる。
(3)また、帯状の導電性線条体12aを絶縁膜13とともに折り重ねることで、折り重ね部17には絶縁膜13が介在する。よって、折り重ね導電性線条体12bの表面積を広く確保できるので表皮効果による電流密度の低下を軽減することができる。また、電流密度の高い低周波電流を流すこともできる。
(4)また、中空導体管15bの肉厚が0.4mmであり、表皮深さ0.8mmよりも薄いため、8kHzの周波数で電流を流す場合において、表皮効果による影響を受けない。よって、中空導体管15b内の電流密度を均一にして、電線10aの電流抵抗値を低減させることができる。
(5)また、中空導体管15bの断面外形が矩形であるため、コイルにする際、隙間無く巻くことができる。よって、コイルの小型化を図ることができる。
(1) In the electric wire 10a of the present invention, since the folded conductive filament 12b is a single conductor, the proximity effect does not occur in the electric wire 10a. Therefore, the current density in the folded conductive filaments 12b is uniform, and the current can flow at a high current density at either high frequency or low frequency.
(2) Moreover, since the short diameter (thickness) of the folded conductive filament 12b is 0.6 mm and is thinner than twice the copper skin depth of 0.8 mm, in the case of passing a current at a frequency of 8 kHz Not affected by the skin effect. Therefore, the current density in the folded conductive linear body 12b can be made uniform, and the current resistance value of the electric wire 10a can be reduced.
(3) Further, the insulating film 13 is interposed in the folded portion 17 by folding the strip-shaped conductive filament 12 a together with the insulating film 13. Therefore, since the surface area of the folded conductive filament 12b can be secured widely, a decrease in current density due to the skin effect can be reduced. In addition, a low frequency current having a high current density can be passed.
(4) Since the hollow conductor tube 15b has a thickness of 0.4 mm and is thinner than a skin depth of 0.8 mm, it is not affected by the skin effect when a current is passed at a frequency of 8 kHz. Therefore, the current density in the hollow conductor tube 15b can be made uniform, and the current resistance value of the electric wire 10a can be reduced.
(5) Moreover, since the cross-sectional external shape of the hollow conductor tube 15b is a rectangle, when making it into a coil, it can wind without gap. Therefore, the coil can be reduced in size.

図3(a)に示すように、折り重ね導電性線条体12bを被覆する絶縁膜13と中空導体管15bの間に電磁遮蔽層14と他の絶縁膜13が形成された電線10bであってもよい。電磁遮蔽層14は、隣接する電線10b間で生じる電気的な相互干渉を抑制するものである。その材料としては、例えば金属箔テープを用いることができる。電磁遮蔽層14は、折り重ね導電性線条体12bを金属箔テープで被覆することにより形成される。しかし、電磁遮蔽層14の形成方法はこれに限られない。例えば、絶縁膜13に被覆された帯状の導電性線条体12aを金属箔テープで被覆して、導電性線条体12aとともに金属箔テープを折り重ねて電磁遮蔽層14を形成してもよい。他の絶縁膜13は、電磁遮蔽層14と中空導体管15bとの間に介在している。電磁遮蔽層14により、隣接する電線10a間に生じる近接効果を抑制することができる。   As shown in FIG. 3A, an electric wire 10b in which an electromagnetic shielding layer 14 and another insulating film 13 are formed between an insulating film 13 covering a folded conductive filament 12b and a hollow conductor tube 15b. May be. The electromagnetic shielding layer 14 suppresses electrical mutual interference that occurs between the adjacent electric wires 10b. As the material, for example, a metal foil tape can be used. The electromagnetic shielding layer 14 is formed by covering the folded conductive filament 12b with a metal foil tape. However, the method of forming the electromagnetic shielding layer 14 is not limited to this. For example, the electromagnetic shield layer 14 may be formed by covering the strip-shaped conductive filament 12a covered with the insulating film 13 with a metal foil tape and folding the metal foil tape together with the conductive filament 12a. . The other insulating film 13 is interposed between the electromagnetic shielding layer 14 and the hollow conductor tube 15b. The electromagnetic shielding layer 14 can suppress the proximity effect generated between the adjacent electric wires 10a.

図3(b)に示すように、中空導体管15bの内周面に面した折り重ね導電性線条体12bの一部が絶縁膜13により被覆されていない電線10cであってもよい。折り重ね導電性線条体12bの一方の面の一端部を被覆する絶縁膜13が、折り重ね導電性線条体12bの長手に沿って剥離されている。絶縁膜13が剥離された部分を露出部18という。露出部18の形成方法は剥離に限られず、露出部18は、絶縁膜13形成前の帯状の導電性線条体12aの一部をテープ等で覆い、絶縁膜13被覆後にテープを剥がして形成されたものであってもよい。折り重ね導電性線条体12bは、露出部18が中空導体管15bの内周面に面するように、略S字状に折り重ねられている。露出部18では、折り重ね導電性線条体12bの上面が中空導体管15bの内周面に対して露出している。そして一体化されると、折り重ね導電性線条体12bと中空導体管15bとが露出部18で接して導通する。これにより、折り重ね導電性線条体12bと中空導体管15bとが電気的に一体の導体となり、折り重ね導電性線条体12bと中空導体管15b間の近接効果を防止することができる。露出部18の形成位置は、断面S字状の折り重ね導電性線条体12bの上面に限られず、側面若しくは下面、または複数個所に点在して形成されてもよい。   As shown in FIG. 3 (b), the electric wire 10c in which a part of the folded conductive filament 12b facing the inner peripheral surface of the hollow conductor tube 15b is not covered with the insulating film 13 may be used. The insulating film 13 covering one end of one surface of the folded conductive filament 12b is peeled along the length of the folded conductive filament 12b. A portion where the insulating film 13 is peeled off is referred to as an exposed portion 18. The method of forming the exposed portion 18 is not limited to peeling, and the exposed portion 18 is formed by covering a part of the strip-shaped conductive filament 12a before forming the insulating film 13 with a tape or the like and peeling the tape after covering the insulating film 13. It may be what was done. The folded conductive filament 12b is folded in a substantially S shape so that the exposed portion 18 faces the inner peripheral surface of the hollow conductor tube 15b. In the exposed portion 18, the upper surface of the folded conductive filament 12b is exposed to the inner peripheral surface of the hollow conductor tube 15b. Then, when integrated, the folded conductive linear body 12b and the hollow conductor tube 15b are in contact with each other at the exposed portion 18 to be conducted. Thereby, the folded conductive filament 12b and the hollow conductor tube 15b become an electrically integrated conductor, and the proximity effect between the folded conductive filament 12b and the hollow conductor tube 15b can be prevented. The position where the exposed portion 18 is formed is not limited to the upper surface of the folded conductive linear body 12b having an S-shaped cross section, and may be formed on a side surface, a lower surface, or a plurality of locations.

図4(a)に示すように、折り重ね導電性線条体12cの断面が略W字状の電線20aであってもよい。また、さらに複数回折り重ねられた折り重ね導電性線条体や、略コ字状の折り重ね導電性線条体であってもよい。また、図4(b)に示すように、折り重ね導電性線条体12cの一部に露出部18を形成し、折り重ね導電性線条体12cと中空導体管15bが電気的に一体の導体となる電線20bであってもよい。   As shown to Fig.4 (a), the cross section of the folding electroconductive linear body 12c may be the substantially W-shaped electric wire 20a. Further, it may be a folded conductive filament that is further diffracted multiple times or a substantially U-shaped folded conductive filament. Further, as shown in FIG. 4B, an exposed portion 18 is formed in a part of the folded conductive filament 12c, and the folded conductive filament 12c and the hollow conductor tube 15b are electrically integrated. The electric wire 20b used as a conductor may be sufficient.

本発明による表皮効果及び近接効果の軽減状況を図5に示す。横軸は電流の周波数、縦軸は相対的電流密度である。相対的電流密度は直流の場合を100%として表示される。グラフAは、断面寸法が高さ2mm×幅3mmの長方形である従来の銅性コイル線をモデルとした計算値である。グラフBは電線20aをモデルとした計算値である。   FIG. 5 shows the reduction of the skin effect and proximity effect according to the present invention. The horizontal axis represents current frequency, and the vertical axis represents relative current density. The relative current density is displayed assuming that the direct current is 100%. Graph A is a calculated value modeled on a conventional copper coil wire whose cross-sectional dimension is a rectangle with a height of 2 mm and a width of 3 mm. Graph B is a calculated value using the electric wire 20a as a model.

従来の銅性コイル線の場合、周波数が4kHzより高くなると、相対的電流密度は低下し始める。周波数が6kHzでは相対的電流密度は90%、周波数が80kHzでは相対的電流密度は35%、周波数が1MHzでは相対的電流密度は10%まで減少する。   In the case of the conventional copper coil wire, the relative current density starts to decrease when the frequency becomes higher than 4 kHz. When the frequency is 6 kHz, the relative current density is 90%, when the frequency is 80 kHz, the relative current density is 35%, and when the frequency is 1 MHz, the relative current density is reduced to 10%.

本発明の電線20aの場合、周波数が80kHzまでの相対的電流密度は90%であり、これより周波数が高くなると、相対的電流密度が低下し始める。周波数が1MHzでは相対的電流密度は30%になる。   In the case of the electric wire 20a of the present invention, the relative current density up to a frequency of 80 kHz is 90%. When the frequency becomes higher than this, the relative current density starts to decrease. At a frequency of 1 MHz, the relative current density is 30%.

この結果から、本発明の電線20aは、約6kHz以上の周波数において、従来の銅性コイルに比べて表皮効果および近接効果を軽減している。よって電線20aは、高周波電流であっても、高い電流密度で流すことができ有利である。さらに、電線20aは、周波数が80kHzまでは、一定の電流密度を維持することができる。よって、広い周波数帯域で使用可能である。   From this result, the electric wire 20a of the present invention reduces the skin effect and the proximity effect compared with the conventional copper coil at a frequency of about 6 kHz or more. Therefore, even if the electric wire 20a is a high frequency current, it can flow with a high current density, which is advantageous. Furthermore, the electric wire 20a can maintain a constant current density up to a frequency of 80 kHz. Therefore, it can be used in a wide frequency band.

本発明の電線の他の態様としては、図6(a)に示すように、複数枚の帯状の導電性線条体12aが積層された電線30aであってもよい。この電線30aは次のように形成される。先ず、絶縁膜13に被覆された帯状の導電性線条体12aが複数枚準備される。次に、複数枚の導電性線条体12aが積層される。次に、積層された導電性線条体12aが中空導体管15aに挿入される。次に、引抜加工により、積層された導電性線条体12aと中空導体管15aが絶縁膜13を介して一体化される。   As another aspect of the electric wire of the present invention, as shown in FIG. 6A, an electric wire 30a in which a plurality of strip-like conductive filaments 12a are laminated may be used. The electric wire 30a is formed as follows. First, a plurality of strip-shaped conductive filaments 12a covered with the insulating film 13 are prepared. Next, a plurality of conductive filaments 12a are laminated. Next, the laminated conductive filament 12a is inserted into the hollow conductor tube 15a. Next, the conductive filament 12a and the hollow conductor tube 15a laminated are integrated through the insulating film 13 by drawing.

ここで、電線30aの製造において、積層された導電性線条体束12aを中空導体管15aに連続的に挿入し、導電性線条体束12aと中空導体管15aを一体化する製造方法として、図2に示された上記テープ状導体21を用いた製造方法を用いることができる。   Here, in the production of the electric wire 30a, the laminated conductive wire bundle 12a is continuously inserted into the hollow conductor tube 15a, and the conductive wire bundle 12a and the hollow conductor tube 15a are integrated. A manufacturing method using the tape-shaped conductor 21 shown in FIG. 2 can be used.

一体化された中空導体管15bの外形は矩形となり、その断面寸法は、例えば高さ2mm×幅3mmである。導電性線条体12aの短径(厚み)は0.6mmである。また、導電性線条体12aの積層枚数は3枚に限られず、適宜変更可能である。各導電性線条体12a間には絶縁膜13が介在しており、導電性線条体12aは互いに導通していない。   The outer shape of the integrated hollow conductor tube 15b is rectangular, and its cross-sectional dimension is, for example, 2 mm high × 3 mm wide. The short diameter (thickness) of the conductive filament 12a is 0.6 mm. Further, the number of laminated conductive filaments 12a is not limited to three and can be changed as appropriate. An insulating film 13 is interposed between the conductive filaments 12a, and the conductive filaments 12a are not electrically connected to each other.

(1)本発明の電線30aを用いれば、導電性線条体12aの短径(厚み)が0.6mmであり、銅の表皮深さ0.8mmの2倍より薄いため、8kHzの周波数で電流を流す場合において、表皮効果による影響を受けない。よって、導電性線条体12a内の電流密度を均一にして、電線30aの電流抵抗値を低減させることができる。
(2)また、複数の導電性線条体12aを積層することにより、導電性線条体12aの総表面積を広く確保できるので表皮効果による電流密度の低下を軽減することができる。
(1) If the electric wire 30a of this invention is used, since the short diameter (thickness) of the conductive filament 12a is 0.6 mm and is thinner than twice the skin depth of copper of 0.8 mm, the frequency is 8 kHz. When current is applied, it is not affected by the skin effect. Therefore, the current density in the conductive wire body 12a can be made uniform, and the current resistance value of the electric wire 30a can be reduced.
(2) Moreover, since the total surface area of the conductive filament 12a can be secured widely by laminating the plurality of conductive filaments 12a, the decrease in current density due to the skin effect can be reduced.

図6(b)に示すように、積層された導電性線条体12aの長手の側面に露出部18が形成された電線30bであってもよい。露出部18により、各導電性線条体12aが中空導体管15bを介して互いに導通することで、各導電性線条体12aと中空導体管15bは電気的に一体の導体となる。よって、電線30bは、各導電性線条体12aと中空導体管15b間における近接効果の発生を防止することができる。   As shown in FIG. 6B, an electric wire 30b in which an exposed portion 18 is formed on the longitudinal side surface of the laminated conductive filament 12a may be used. Each conductive filament 12a is electrically connected to each other via the hollow conductor tube 15b by the exposed portion 18, whereby each conductive filament 12a and the hollow conductor tube 15b become an electrically integrated conductor. Therefore, the electric wire 30b can prevent the proximity effect from occurring between each conductive filament 12a and the hollow conductor tube 15b.

また、図6(c)に示すように、積層された各導電性線条体12a間に電磁遮蔽層14が形成された電線30cであってもよい。電磁遮蔽層14は、金属箔テープを介して導電性線条体12aを積層することにより形成される。電磁遮蔽層14により、電線30c内の各導電性線条体12a間で生じる近接効果を抑制することができる。   Moreover, as shown in FIG.6 (c), the electric wire 30c by which the electromagnetic shielding layer 14 was formed between each laminated | stacked electroconductive linear body 12a may be sufficient. The electromagnetic shielding layer 14 is formed by laminating the conductive filaments 12a via a metal foil tape. The electromagnetic shielding layer 14 can suppress a proximity effect that occurs between the conductive filaments 12a in the electric wire 30c.

本発明の電線のさらに他の態様としては、図7(a)および(b)に示すように、複数の導電性線条体12dを束ねて形成した導電性線条体束19aが、中空導体管15aと一体化された電線40aであってもよい。導電性線条体12dは、代表的には銅からなる導体線(銅線)であり、その直径は0.5mmである。しかし、直径はこれに限られず、使用周波数での表皮深さの2倍より小さければよい。また、銅線に限られず、電気伝導度、加工性、コスト、耐久性等を考慮して、銅合金、アルミニウム、アルミニウム合金等から適宜選択できる。また、これらを組み合わせて製造されてもよい。また、導電性線条体12dの断面形状、断面積、材質が全て同一である必要もない。さらに、導電性線条体12dの線数は特に限定されず、適宜選択可能である。導電性線条体束19aの外表面は絶縁膜13に被覆されている。   As still another embodiment of the electric wire of the present invention, as shown in FIGS. 7A and 7B, a conductive wire bundle 19a formed by bundling a plurality of conductive wire bodies 12d is a hollow conductor. The electric wire 40a integrated with the tube 15a may be used. The conductive filament 12d is typically a conductor wire (copper wire) made of copper, and its diameter is 0.5 mm. However, the diameter is not limited to this, and may be smaller than twice the skin depth at the operating frequency. Moreover, it is not limited to a copper wire, and can be appropriately selected from copper alloy, aluminum, aluminum alloy and the like in consideration of electrical conductivity, workability, cost, durability, and the like. Moreover, you may manufacture combining these. Further, the cross-sectional shape, cross-sectional area, and material of the conductive linear body 12d need not all be the same. Furthermore, the number of lines of the conductive linear body 12d is not particularly limited, and can be selected as appropriate. The outer surface of the conductive filament bundle 19a is covered with an insulating film 13.

この電線40aは、次のように形成される。先ず、導電性線条体12dが複数本準備される。次に、これら複数の導電性線条体12dを撚って束ねて導電性線条体束19aが形成される。導電性線条体束19aは、複数の導電性線条体12aを撚ることなく、平行に並べて束ねられてもよい。次に、導電性線条体束19aの外表面が絶縁膜13に被覆される。次に、図7(a)に示すように、導電性線条体束19aが中空導体管15aに挿入される。そして、図7(b)に示すように、引抜加工により、導電性線条束19bが絶縁膜13を介して中空導体管15bと一体化した電線40aが形成される。   This electric wire 40a is formed as follows. First, a plurality of conductive filaments 12d are prepared. Next, the plurality of conductive filaments 12d are twisted and bundled to form a conductive filament bundle 19a. The conductive filament bundle 19a may be bundled in parallel without twisting the plurality of conductive filaments 12a. Next, the outer surface of the conductive filament bundle 19 a is covered with the insulating film 13. Next, as shown in FIG. 7A, the conductive filament bundle 19a is inserted into the hollow conductor tube 15a. Then, as shown in FIG. 7B, the electric wire 40a in which the conductive wire bundle 19b is integrated with the hollow conductor tube 15b through the insulating film 13 is formed by drawing.

ここで、電線40aの製造方法において、導電性線条体束19aを中空導体管15aに連続的に挿入し、導電性線条体束19aと中空導体管15aを一体化する製造方法として、図2に示された上記テープ状導体21を用いた製造方法を用いることができる。   Here, in the manufacturing method of the electric wire 40a, as a manufacturing method in which the conductive filament bundle 19a is continuously inserted into the hollow conductor tube 15a and the conductive filament bundle 19a and the hollow conductor tube 15a are integrated, FIG. The manufacturing method using the said tape-shaped conductor 21 shown by 2 can be used.

図7(b)に示すように、一体化された中空導体管15bの断面形状は矩形であり、その断面寸法は例えば高さ2mm×幅3mmである。また、図7(b)中の破線は、引抜加工により、多角形に変形された各導電性線条体12eの断面外形を示すものであり、その短径は0.5mm以下となる。導電性線条体12eは互いに導通しているため、導電性線条体束19bは電気的に一体の導体となる。また、導電性線条体束19bと中空導体管15bの間には絶縁膜13が介在している。さらに、各導電性線条体12eの間に入り込んだ絶縁膜13が、導電性線条体束19bの内部に向かって延出している。   As shown in FIG. 7B, the cross-sectional shape of the integrated hollow conductor tube 15b is rectangular, and the cross-sectional dimension thereof is, for example, 2 mm high × 3 mm wide. Moreover, the broken line in FIG.7 (b) shows the cross-sectional external shape of each electroconductive linear body 12e deform | transformed into the polygon by drawing, The short axis becomes 0.5 mm or less. Since the conductive filaments 12e are electrically connected to each other, the conductive filament bundle 19b is an electrically integrated conductor. An insulating film 13 is interposed between the conductive filament bundle 19b and the hollow conductor tube 15b. Furthermore, the insulating film 13 that has entered between the conductive filaments 12e extends toward the interior of the conductive filament bundle 19b.

(1)本発明の電線40aは、導電性線条体束19bが互いに導通する複数の導電性線条体12eから構成されており、電気的に一体の導体であるため、電線40a内での近接効果を防止することができる。よって、導電性線条体束19b内の電流密度を均一にして、電線40aの電流抵抗値を低減させることができる。さらに、低周波電流であっても高い電流密度で流すことができる。
(2)また、導電性線条体12eの短径が0.5mm以下であり、表皮深さ0.8mmの2倍より小さいため、8kHzの周波数で電流を流す場合において、表皮効果による影響を受けない。よって、導電性線条体束19b内の電流密度を均一にして、電線40aの電流抵抗値を低減させることができる。
(1) Since the electric wire 40a of the present invention is composed of a plurality of conductive wire rods 12e through which the conductive wire bundle 19b conducts, and is an electrically integrated conductor, Proximity effects can be prevented. Therefore, the current density in the conductive wire bundle 19b can be made uniform, and the current resistance value of the electric wire 40a can be reduced. Furthermore, even a low frequency current can be passed at a high current density.
(2) In addition, since the short diameter of the conductive filament 12e is 0.5 mm or less and smaller than twice the skin depth of 0.8 mm, when current is passed at a frequency of 8 kHz, the influence of the skin effect is affected. I do not receive it. Therefore, the current density in the conductive wire bundle 19b can be made uniform, and the current resistance value of the electric wire 40a can be reduced.

また、本発明の電線は、図7(c)に示すように、導電性線条体束19bを被覆する絶縁膜13と中空導体管15bの間に電磁遮蔽層14と他の絶縁膜13が形成された電線40bであっても良い。電磁遮蔽層14は、導電性線条体束19aの外表面を覆う絶縁膜13を金属箔テープで被覆することで形成される。また、他の絶縁膜13は、電磁遮蔽層14を被覆するものである。電磁遮蔽層14により、隣接する電線40b間に生じる近接効果を抑制することができる。   Moreover, as shown in FIG.7 (c), the electric wire of this invention has the electromagnetic shielding layer 14 and the other insulating film 13 between the insulating film 13 which covers the conductive filament bundle 19b, and the hollow conductor tube 15b. The formed electric wire 40b may be used. The electromagnetic shielding layer 14 is formed by covering the insulating film 13 covering the outer surface of the conductive filament bundle 19a with a metal foil tape. The other insulating film 13 covers the electromagnetic shielding layer 14. The electromagnetic shielding layer 14 can suppress the proximity effect generated between the adjacent electric wires 40b.

また、図8(a)および(b)に示すように、本発明の電線は、個別に絶縁膜13に被覆された複数の導電性線条体12dが束ねられ、中空導体管15aの内周面に面した絶縁膜13の一部が導電性線条体12dの長手方向に剥離された導電性線条体束19cを備え、導電性線条体束19cと中空導体管15aが、引抜加工により、一体化した電線50であってもよい。一体化された導電性線条体12dは、露出部18により、中空導体管15bを介して互いに導通するため、各導電性線条体12dと中空導体管15bは電気的に一体の導体となる。よって電線50内において近接効果の発生を防止することができる。   Further, as shown in FIGS. 8A and 8B, the electric wire of the present invention is formed by bundling a plurality of conductive filaments 12d individually covered with an insulating film 13, and the inner circumference of the hollow conductor tube 15a. A part of the insulating film 13 facing the surface is provided with a conductive filament bundle 19c peeled in the longitudinal direction of the conductive filament 12d, and the conductive filament bundle 19c and the hollow conductor tube 15a are drawn. Therefore, the integrated electric wire 50 may be used. Since the integrated conductive wire 12d is electrically connected to each other through the hollow conductor tube 15b by the exposed portion 18, each conductive wire 12d and the hollow conductor tube 15b become an electrically integrated conductor. . Therefore, it is possible to prevent the proximity effect from occurring in the electric wire 50.

以上、本発明の電線について説明したが、本発明はその趣旨を逸脱しない範囲で、当業者の知識に基づき種々の改良、修正、変形を加えた態様で実施し得るものであり、これらの態様はいずれも本発明の範囲に属するものである。   Although the electric wire of the present invention has been described above, the present invention can be carried out in various modifications, modifications, and variations based on the knowledge of those skilled in the art without departing from the spirit thereof. All belong to the scope of the present invention.

図9および図10は、本発明の電線の他の変形例である。   9 and 10 are other modifications of the electric wire of the present invention.

図9(a)および図10(a)に示す電線は、上記電線10aの変形例である。この電線は、絶縁膜13に被覆され、断面が略S字状の折り重ね導電性線条体12bが中空導体管15aに挿入され、引抜加工により、折り重ね導電性線条体12bと中空導体管15aが一体化されたものである。   The electric wires shown in FIG. 9A and FIG. 10A are modifications of the electric wire 10a. This electric wire is covered with an insulating film 13, and a folded conductive filament 12b having a substantially S-shaped cross section is inserted into the hollow conductor tube 15a. By drawing, the folded conductive filament 12b and the hollow conductor The tube 15a is integrated.

図9(b)および図10(b)に示す電線は、上記電線20aの変形例である。この電線は、絶縁膜13に被覆され、断面が略W字状の折り重ね導電性線条体12cが中空導体管15aに挿入され、引抜加工により、折り重ね導電性線条体12cと中空導体管15aが一体化されたものである。   The electric wires shown in FIG. 9B and FIG. 10B are modifications of the electric wire 20a. This electric wire is covered with an insulating film 13, a folded conductive filament 12c having a substantially W-shaped cross section is inserted into the hollow conductor tube 15a, and the folded conductive filament 12c and the hollow conductor are drawn by drawing. The tube 15a is integrated.

図9(c)および図10(c)に示す電線は、上記電線30aの変形例である。この電線は、絶縁膜13に被覆され、積層された複数の導電性線条体12aが中空導体管15aに挿入され、引抜加工により、積層された導電性線条体12aと中空導体管15aが一体化されたものである。   The electric wires shown in FIG. 9C and FIG. 10C are modifications of the electric wire 30a. This electric wire is covered with an insulating film 13, and a plurality of laminated conductive filaments 12a are inserted into the hollow conductor tube 15a, and the laminated conductive filaments 12a and the hollow conductor tube 15a are formed by drawing. It is integrated.

図9(d)および図10(d)に示す電線は、上記電線40aの変形例である。この電線は、複数の導電性線条体12dが束ねられ、その外表面を絶縁膜13に被覆された導電性線条体束19aが中空導体管15aに挿入され、引抜加工により、導電性線条体束19aと中空導体管15aが一体化されたものである。   The electric wires shown in FIG. 9D and FIG. 10D are modifications of the electric wire 40a. In this electric wire, a plurality of conductive filaments 12d are bundled, and a conductive filament bundle 19a whose outer surface is covered with an insulating film 13 is inserted into the hollow conductor tube 15a. The strip bundle 19a and the hollow conductor tube 15a are integrated.

図9(e)および図10(e)に示す電線は、上記電線50の変形例である。この電線は、個別に絶縁膜に被覆された複数の導電性線条体12dが束ねられ、中空導体管15aの内周面に面した各絶縁膜13の一部が導電性線条体12dの長手方向に剥離された導電性線条体束19aが中空導体管15aに挿入され、引抜加工により、導電性線条体束19aと中空導体管15aが一体化されたものである。   The electric wires shown in FIG. 9 (e) and FIG. 10 (e) are modifications of the electric wire 50. In this electric wire, a plurality of conductive filaments 12d individually coated with an insulation film are bundled, and a part of each insulation film 13 facing the inner peripheral surface of the hollow conductor tube 15a is made of the conductive filament 12d. The conductive filament bundle 19a peeled in the longitudinal direction is inserted into the hollow conductor tube 15a, and the conductive filament bundle 19a and the hollow conductor tube 15a are integrated by drawing.

図9に示す電線は、一体化された中空導体管15cの断面外形が正六角形である。これにより、コイルを形成する際に、隙間無く巻き付けることができる。よって、モーターの小型化を図ることができる。図10に示す電線は、一体化された中空導体管15dの断面外形が円形である。この電線は、送電線のように、巻き付けないで使用する場合に用いることができる。   In the electric wire shown in FIG. 9, the cross-sectional outer shape of the integrated hollow conductor tube 15c is a regular hexagon. Thereby, when forming a coil, it can wind without gap. Therefore, the motor can be reduced in size. As for the electric wire shown in FIG. 10, the cross-sectional external shape of the integrated hollow conductor tube 15d is circular. This electric wire can be used when used without being wound like a transmission line.

ここで「正六角形」には、角が面取りされた正六角形、角が丸みを帯びた正六角形が含まれる。「円形」には、実質的に差し支えない範囲の歪みをもった円も含まれる。また「矩形」には、角が面取りされた矩形、角が丸みを帯びた矩形が含まれる。   Here, “regular hexagons” include regular hexagons with chamfered corners and regular hexagons with rounded corners. “Circular” includes a circle having a distortion within a range that does not substantially interfere. The “rectangle” includes a rectangle with chamfered corners and a rectangle with rounded corners.

本発明の電線10は、モーター(電動機)あるいは発電機のコイル、または送電線に好適に用いられる。   The electric wire 10 of the present invention is suitably used for a motor (electric motor), a coil of a generator, or a power transmission line.

10a・20a・30a・40a・50...電線、12a・12d...導電性線条体、12b・12c...折り重ね導電性線条体、13...絶縁膜、14...電磁遮蔽層、15a・15b...中空導体管、19a・19b...導電性線条体束   10a, 20a, 30a, 40a, 50 ... electric wire, 12a, 12d ... conductive wire, 12b, 12c ... folded conductive wire, 13 ... insulating film, 14 ... .Electromagnetic shielding layer, 15a / 15b ... hollow conductor tube, 19a / 19b ... conductive wire bundle

Claims (11)

中空導体管と、
表面の全部または一部が絶縁膜により被覆された帯状の導電性線条体を幅方向に折り重ねた折り重ね導体線条体と、
を備え、
前記折り重ね導電性線条体が、前記中空導体管の内部にあり、前記中空導体管と一体化
された電線。
A hollow conductor tube,
A folded conductor linear body obtained by folding a strip-shaped conductive linear body whose surface is entirely or partially covered with an insulating film in the width direction;
With
An electric wire in which the folded conductive filament is inside the hollow conductor tube and integrated with the hollow conductor tube.
中空導体管と、
表面の全部または一部が絶縁膜により個別に被覆された複数の導電性線条体と、
を備え、
前記複数の導電性線条体が、前記中空導電管の内部にあり、積層され、前記中空導体管
と一体化された電線。
A hollow conductor tube,
A plurality of conductive filaments, all or part of the surface of which is individually coated with an insulating film;
With
The electric wire in which the plurality of conductive filaments are inside the hollow conductive tube, laminated, and integrated with the hollow conductor tube.
中空導体管と、
複数の導電性線条体が束ねられ、外表面の全部または一部が絶縁膜により被覆された導電性線条体と、
を備え、
前記導電性線条体束が、前記中空導体管の内部にあり、中空導体管と一体化された電線。
A hollow conductor tube,
A plurality of conductive filaments are bundled, and a conductive filament having all or part of the outer surface covered with an insulating film;
With
An electric wire in which the conductive filament bundle is inside the hollow conductor tube and is integrated with the hollow conductor tube.
前記導電性線条体の短径が、使用周波数での表皮深さの2倍より小さいことを特徴とする請求項1〜請求項3のいずれかに記載された電線。 The electric wire according to any one of claims 1 to 3, wherein a minor axis of the conductive filament is smaller than twice a skin depth at a use frequency . 前記絶縁膜の表面の少なくとも一部に電磁遮蔽層が形成されたことを特徴とする請求項
1〜請求項4のいずれかに記載された電線。
The electric wire according to any one of claims 1 to 4 , wherein an electromagnetic shielding layer is formed on at least a part of the surface of the insulating film.
前記中空導体管の内周面に面した導電性線条体の一部が絶縁膜により被覆されていないことを特徴とする請求項1〜請求項4のいずれかに記載された電線。 The electric wire according to any one of claims 1 to 4, wherein a part of the conductive linear body facing the inner peripheral surface of the hollow conductor tube is not covered with an insulating film. 前記中空導体管の肉厚は、使用周波数での表皮深さより小さいことを特徴とする請求項1〜請求項6のいずれかに記載された電線。 The electric wire according to any one of claims 1 to 6, wherein a thickness of the hollow conductor tube is smaller than a skin depth at a use frequency . テープ状導体を準備する工程、
表面の全部または一部が絶縁膜により被覆された帯状の導電性線条体を準備する工程、
前記帯状の導電性線条体を幅方向に折り重ねる工程、
前記折り重ねられた導電性線条体を前記テープ状導体に載せる工程、
前記テープ状導体を丸め、長手端面を接合して中空導体管を作製し、前記中空導体管内
に前記導電性線条体を収納する工程、
前記中空導体管および前記導電性線条体を一体化する工程を含む、電線の製造方法。
Preparing a tape-shaped conductor,
A step of preparing a strip-shaped conductive filament having a surface entirely or partially covered with an insulating film;
A step of folding the strip-shaped conductive filaments in the width direction;
Placing the folded conductive filaments on the tape-shaped conductor;
Rounding the tape-shaped conductor, joining the longitudinal end faces to produce a hollow conductor tube, and storing the conductive filament in the hollow conductor tube;
The manufacturing method of an electric wire including the process of integrating the said hollow conductor tube and the said conductive filament.
テープ状導体を準備する工程、
表面の全部または一部が絶縁膜により個別に被覆された複数の導電性線条体を準備する工程、
前記複数の導電性線条体を積層する工程、
前記積層された導電性線条体をテープ状導体に載せる工程、
前記テープ状導体を丸め、長手端面を接合して中空導体管を作製し、前記中空導体管内
に前記積層された導電性線条体を収納する工程、
前記中空導体管および前記積層された導電性線条体を一体化する工程を含む、電線の製造方法。
Preparing a tape-shaped conductor,
A step of preparing a plurality of conductive filaments in which all or part of the surface is individually coated with an insulating film;
Laminating the plurality of conductive filaments,
Placing the laminated conductive filaments on a tape-shaped conductor;
Rounding the tape-shaped conductor, joining the longitudinal end faces to produce a hollow conductor tube, and storing the laminated conductive filaments in the hollow conductor tube;
The manufacturing method of an electric wire including the process of integrating the said hollow conductor tube and the said laminated | stacked electroconductive wire.
テープ状導体を準備する工程、
複数の導電性線条体を束ねて導電性線条体束を形成する工程、
前記導電性線条体束の外表面の全部または一部に絶縁膜を形成する工程、
前記絶縁膜に被覆された導電性線条体束をテープ状導体に載せる工程、
前記テープ状導体を丸め、長手端面を接合して中空導体管を作製し、前記中空導体管内
に前記絶縁膜に被覆された導電性線条体束を収納する工程、
前記中空導体管および前記絶縁膜に被覆された導電性線条体束を一体化する工程を含む、電線の製造方法。
Preparing a tape-shaped conductor,
Bundling a plurality of conductive filaments to form a conductive filament bundle,
Forming an insulating film on all or part of the outer surface of the conductive filament bundle,
Placing the conductive filament bundle covered with the insulating film on a tape-shaped conductor;
Rounding the tape-shaped conductor, joining the longitudinal end faces to produce a hollow conductor tube, and storing the conductive filament bundle covered with the insulating film in the hollow conductor tube;
The manufacturing method of an electric wire including the process of integrating the said conductive wire bundle | flux covered with the said hollow conductor pipe | tube and the said insulating film.
前記中空導体管の内周面と接する絶縁膜の一部を剥離する工程を含む、請求項8~請求項10のいずれかに記載された電線の製造方法。   The method of manufacturing an electric wire according to any one of claims 8 to 10, comprising a step of peeling a part of the insulating film in contact with the inner peripheral surface of the hollow conductor tube.
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