WO2023276629A1 - 方形断面多芯絶縁電線、及びその製造方法 - Google Patents
方形断面多芯絶縁電線、及びその製造方法 Download PDFInfo
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- WO2023276629A1 WO2023276629A1 PCT/JP2022/023588 JP2022023588W WO2023276629A1 WO 2023276629 A1 WO2023276629 A1 WO 2023276629A1 JP 2022023588 W JP2022023588 W JP 2022023588W WO 2023276629 A1 WO2023276629 A1 WO 2023276629A1
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0009—Details relating to the conductive cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/026—Alloys based on copper
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H01B13/06—Insulating conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
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- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
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- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
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- 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
- H01F41/12—Insulating of windings
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- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
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- H—ELECTRICITY
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
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- H01B7/30—Insulated conductors or cables characterised by their form with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect
- H01B7/303—Conductors comprising interwire insulation
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- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
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- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Definitions
- the present invention relates to a square cross-section multicore insulated wire and a manufacturing method thereof.
- Patent Document 1 Japanese Patent Application Laid-Open No. 59-096605
- Patent Document 2 Japanese Utility Model Publication No. 63-006815
- Patent Document 3 Japanese Patent Application Laid-Open No. 2009-245658
- JP-A-59-096605 Japanese Utility Model Publication No. 63-006815 JP 2009-245658 A
- the present invention has been made in view of the above circumstances, and has a square cross-section multi-core structure having both flexibility and shape stability that is excellent in insulation performance and can be applied to a coil in a non-contact charging device.
- the purpose is to provide an insulated wire.
- a square cross-section multicore insulated wire according to the present invention has an assembly of strands in which an insulating layer is formed on the outer periphery of a conductor, and the assembly of strands is a first strand obtained by twisting the strands. It is a composite twisted structure having a wire, a second twisted wire obtained by twisting the first twisted wire, and a third twisted wire obtained by twisting the second twisted wire, and an insulating fiber yarn is wound around the outer circumference.
- the cross section is formed in a rectangular shape, and the winding direction of the fiber yarn is opposite to the twisting direction of the outermost twisted wire in the assembly of the strands.
- the fiber thread can be covered without biting into between the strands. Furthermore, the fiber thread receives the external force during the rectangular shape molding, thereby protecting the internal assembly of the wire strands and preventing the assembly of the wire strands from fraying.
- the number of first strands constituting the first twisted wire among the number of strands is equal to or greater than the number of second strands constituting the second twisted wire among the number of strands. and the number of said second strands constituting said second twisted wire out of said number of strands is equal to or greater than the number of said third strands constituting said third twisted wire out of said number of strands It is a configuration that According to this configuration, even higher flexibility (suppleness) can be obtained.
- the number of first strands constituting the first twisted wire among the number of strands is larger than the number of second strands constituting the second twisted wire among the number of strands.
- the number of said second strands constituting said second twisted wire out of said number of strands is larger than the number of said third strands constituting said third strand out of said number of strands be.
- the twist pitch is such that the first pitch of the first twisted wire is smaller than the second pitch of the second twisted wire, and the second pitch of the second twisted wire is smaller than the third pitch of the third twisted wire.
- the conductor is made of copper or a copper alloy
- the insulating layer is made of polyurethane.
- the fiber thread is made of polyester. This makes it easier to spread the insulating resin when applying it to the coil and impregnating it with the insulating resin, so that high adhesiveness can be obtained.
- the number of strands is 2000 or more. As a result, even higher flexibility can be obtained, and a structure having excellent current-carrying characteristics in a high frequency band can be obtained. As an example, the number of strands is 4000 or less. As a result, it is possible to ensure the necessary bending strength when applying to a coil while increasing the space factor of the conductor.
- the assembly of the strands has a composite twist structure including the first twisted wire, the second twisted wire, the third twisted wire, and the fourth twisted wire.
- the twist directions of the two strands, the third strand and the fourth strand are all in the first direction, and the winding direction of the fiber yarn is opposite to the first direction.
- the square cross-section multicore insulated wire has an assembly of strands in which an insulating layer is formed on the outer periphery of a conductor, and the assembly includes a first twisted wire obtained by twisting the strands and the A composite twisted structure composed of a second twisted wire obtained by twisting the first twisted wire, a third twisted wire obtained by twisting the second twisted wire, and a fourth twisted wire obtained by twisting the third twisted wire, and is insulated
- a fiber yarn of the same type is wound around the outer circumference, and the cross section is formed into a rectangular shape, and the twisting directions of the first strand, the second strand, the third strand, and the fourth strand are Both are in the first direction, and the winding direction of the fiber thread is opposite to the first direction.
- the assembly of the strands has a composite twist structure including the first twisted wire, the second twisted wire, the third twisted wire, and the fourth twisted wire.
- the twisting directions of the two twisted wires and the third twisted wire are both the second direction
- the twisting direction of the fourth twisted wire is the opposite direction of the second direction
- the winding direction of the fiber yarn is the second direction. is the direction.
- the square cross-section multicore insulated wire has an assembly of strands in which an insulating layer is formed on the outer periphery of a conductor, and the assembly includes a first twisted wire obtained by twisting the strands and the A composite twisted structure composed of a second twisted wire obtained by twisting the first twisted wire, a third twisted wire obtained by twisting the second twisted wire, and a fourth twisted wire obtained by twisting the third twisted wire, and is insulated
- a flexible fiber thread is wound around the outer circumference, the cross section is formed into a rectangular shape, and the twisting directions of the first twisted wire, the second twisted wire, and the third twisted wire are all in the second direction.
- a twisting direction of the fourth twisted wire is opposite to the second direction, and a winding direction of the fiber thread is the second direction. This configuration provides even higher shape stability.
- a method for manufacturing a square cross-section multicore insulated wire uses a strand having an insulating layer formed on the outer periphery of a conductor, and a first strand made by twisting the strand and the first strand. a second twisted wire and a third twisted wire obtained by twisting the second twisted wire; first, in the direction opposite to the twisting direction of the outermost twisted wire in the assembly of the strands, and then the cross section is formed into a rectangular shape.
- the method for manufacturing the square cross-section multicore insulated wire includes twisting strands having an insulating layer formed on the outer periphery of a conductor to form a first strand in a first direction, and twisting the first strand in the first direction.
- Twisting to form a second stranded wire, twisting the second stranded wire in the first direction to form a third stranded wire, and twisting the third stranded wire in the first direction to form a fourth stranded wire is a composite twist
- An insulative fiber thread is wound around the outer circumference of the assembly in the direction opposite to the first direction, and then the cross section is formed into a rectangular shape.
- the fiber thread can be covered without biting into between the filaments. Furthermore, it is possible to protect the assembly of the wires inside from the external force when forming into a rectangular shape and prevent the assembly of the wires from fraying.
- a rectangular cross-section multi-core insulated wire that has excellent insulation performance, is applicable to a coil in a non-contact charging device, and has both flexibility and shape stability.
- FIG. 1 is a structural diagram schematically showing the structure of a multi-core insulated wire having a square cross section according to an embodiment of the present invention.
- 2A is a diagram schematically showing strands in the example of the square cross-section multicore insulated wire shown in FIG. 1
- FIG. 2B is a diagram showing a state in which the strands in FIG. 2A are twisted to form a first stranded wire.
- FIG. 2C is a diagram showing a state in which the first stranded wire in FIG. 2B is twisted to form a second stranded wire.
- 3A is a diagram showing a state in which the second strand in FIG. 2C is twisted to form a third strand, and FIG.
- FIG. 3B shows a state in which the third strand in FIG. 3A is twisted to form a fourth strand.
- FIG. 3C is a diagram showing a state in which the fourth twisted wire in FIG. 3B is covered with fiber threads;
- 4A is a diagram schematically showing strands in another example of the square cross-section multicore insulated wire shown in FIG. 1, and
- FIG. 4B shows a state in which the strands in FIG. 4A are twisted to form a first stranded wire.
- FIG. 4C is a diagram showing a state in which the first stranded wire in FIG. 4B is twisted to form a second stranded wire.
- 5A is a diagram showing a state in which the second strand in FIG.
- FIG. 4C is twisted to form a third strand
- FIG. 5B shows a state in which the third strand in FIG. 5A is twisted to form a fourth strand.
- FIG. 5C is a diagram showing a state in which the fourth twisted wire in FIG. 5B is covered with fiber threads;
- FIG. 6 is a diagram showing a coiled state of the multi-core insulated wire of square cross section shown in FIG.
- the square cross-section multi-core insulated wire 1 of the present embodiment is applied, as an example, to a coil in a non-contact charging device such as an electric device, an electric motor, or an automobile.
- a non-contact charging device such as an electric device, an electric motor, or an automobile.
- members having the same functions are denoted by the same reference numerals, and repeated description thereof may be omitted.
- a square cross-section multicore insulated wire 1 has an assembly of strands 2 in which an insulating layer 2b is formed on the outer periphery of a conductor 2a. , a third twisted wire 23 and a fourth twisted wire 24, and an insulating fiber yarn 3 is wound around the outer circumference, and the cross section is formed into a rectangular shape, and the fiber yarn 3 The winding direction is opposite to the twisting direction of the outermost twisted wire in the assembly of the strands 2 .
- the conductor 2a that constitutes the wire 2 is a conductive conductor that can be soldered, and is made of, for example, copper or a copper alloy.
- the insulating layer 2b is an insulating film that has excellent insulating properties and does not interfere with soldering, and is made of, for example, polyurethane or polyester.
- An enameled wire can be applied to the wire 2 .
- the insulating fiber thread 3 is a covering thread and is selected from polyester thread, acrylic thread, polypropylene thread and polyurethane thread, for example. The material of the fiber thread 3 can be appropriately set according to the application.
- a multicore insulated wire 1 with a square cross section is protected and insulated from the outside by covering an assembly of strands 2 with fiber yarns 3 .
- the assembly of wires 2 has a rectangular cross section.
- the twisting direction of the fourth twisted wire 24 is the first direction v1
- the winding direction of the fiber thread 3 is the second direction v2 opposite to the twisting direction.
- the first direction v1 and the second direction v2 indicate a relative relationship. It may be the second direction v2 opposite to the direction.
- the twisting direction is right-hand twist or S-twist, and the winding direction of the fiber thread 3 is left-hand.
- the twist direction is left-hand twist or Z-twist
- the winding direction of the fiber yarn 3 is right-hand twist.
- the apparatus for manufacturing the square cross-section multicore insulated wire 1 is installed in the order of a twisting apparatus, a forming apparatus, and a winding apparatus from the upstream side.
- a strand 2 comprising a conductor 2a made of copper or copper alloy and an insulating layer 2b made of polyurethane or polyester is used.
- 7 or more and 21 or less strands 2 are twisted in the first direction v1 to form a first twisted wire 21 .
- the length in the longitudinal direction that the first wire of the strands 2 makes one round is the first pitch P1.
- three or more and nine or less first stranded wires 21 are twisted in the first direction v1 to form a second stranded wire 22 .
- the length of the first wire of the first twisted wire 21 in the longitudinal direction is the second pitch P2.
- FIG. 3A three or more and seven or less second stranded wires 22 are twisted in the first direction v1 to form a third stranded wire 23 .
- the length in the longitudinal direction of the first wire of the second twisted wire 22 is the third pitch P3.
- FIG. 3B three or more and seven or less third twisted wires 23 are twisted in the first direction v1 to form a fourth twisted wire 24 .
- the length of the first wire of the fourth twisted wire 24 in the longitudinal direction is the fourth pitch P4.
- the insulating fiber thread 3 is wound around the outer circumference of the fourth twisted wire 24 in a second direction v2 opposite to the first direction v1.
- the multicore insulated wire 1 with a square cross section is formed by sandwiching it between rollers of a forming device and forming the cross section into a rectangular shape. Then, the molded rectangular cross-section multicore insulated wire 1 is wound on a drum.
- a strand 2 comprising a conductor 2a made of copper or copper alloy and an insulating layer 2b made of polyurethane or polyester is used.
- 7 or more and 21 or less strands 2 are twisted in the second direction v2 to form a first twisted wire 21 .
- FIG. 4C three or more and nine or less first stranded wires 21 are twisted in the second direction v2 to form a second stranded wire 22 .
- three or more and seven or less second twisted wires 22 are twisted in the second direction v2 to form a third twisted wire 23 .
- the insulating fiber thread 3 is wound around the outer periphery of the fourth twisted wire 24 in a second direction v2 opposite to the first direction v1.
- the multicore insulated wire 1 with a square cross section is formed by sandwiching it between rollers of a forming device and forming the cross section into a rectangular shape. Then, the molded rectangular cross-section multicore insulated wire 1 is wound on a drum.
- the first example described above is twisted in the same direction, and the second example is rope twist.
- the twisting direction of the fourth twisted wire 24 is the first direction v1
- the winding direction of the fiber thread 3 is the second direction v2.
- the first direction v1 and the second direction v2 indicate a relative relationship. It may be the second direction v2 opposite to the direction.
- the manufacturing method of the square cross-section multicore insulated wire 1 is as described above.
- the wire 2 is composed of a conductor 2a and an insulating layer 2b.
- the conductor 2a is made of copper wire or copper alloy wire with a diameter of 0.1 mm.
- the insulating layer 2b is made of polyurethane or polyester with a thickness of 9 ⁇ m on one side in the radial direction.
- the textile yarn 3 consists of 6 polyester yarns of 110 decitex. Fourteen wires 2 are twisted in the first direction v1 at a first pitch P1 of 25 mm to form a first twisted wire 21.
- the six first twisted wires 21 are twisted in the first direction v1 at a second pitch of 45 mm to form a second twisted wire 22 .
- five second twisted wires 22 are twisted in the first direction v1 at a third pitch of 85 mm to form a third twisted wire 23 .
- five third twisted wires 23 are twisted in the first direction v1 at a fourth pitch of 115 mm to form a fourth twisted wire 24 .
- the fiber yarn 3 is wound around the outer circumference of the fourth twisted wire 24 in the second direction v2. After that, it is clamped between rollers of a forming device and shaped into a rectangular cross-section to form a square cross-section multicore insulated wire 1 .
- a plurality of rollers are provided.
- the square cross-section multi-core insulated wire 1 is used by being bent into a coil shape, as shown in FIG. Also, if necessary, it is cut to a desired length, and terminal processing such as soldering, fusing, or terminal attachment is performed. According to the present embodiment described above, it is possible to achieve both flexibility (suppleness) capable of following bending and shape stability. Moreover, the fiber thread can be covered without biting into between the filaments. Furthermore, it is possible to protect the assembly of the wires inside from the external force when forming into a rectangular shape and prevent the assembly of the wires from fraying.
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Abstract
Description
図2Aに示すように、銅または銅合金からなる導体2aと、ポリウレタンまたはポリエステルからなる絶縁層2bとからなる素線2を用いる。そして、図2Bに示すように、素線2を7本以上21本以下で第1方向v1に撚って第1撚線21にする。素線2のうちの1番目の線が一周した長手方向の長さは第1ピッチP1である。次に、図2Cに示すように、第1撚線21を3本以上9本以下で第1方向v1に撚って第2撚線22にする。第1撚線21のうちの1番目の線が一周した長手方向の長さは第2ピッチP2である。次に、図3Aに示すように、第2撚線22を3本以上7本以下で第1方向v1に撚って第3撚線23にする。第2撚線22のうちの1番目の線が一周した長手方向の長さは第3ピッチP3である。次に、図3Bに示すように、第3撚線23を3本以上7本以下で第1方向v1に撚って第4撚線24にする。第4撚線24のうちの1番目の線が一周した長手方向の長さは第4ピッチP4である。そして、図3Cに示すように、絶縁性の繊維糸3を第4撚線24の外周に第1方向v1の逆方向の第2方向v2に巻き付ける。その後、成形装置のローラに挟んで横断面を平角状に成形することで方形断面多芯絶縁電線1にする。そして、成形した方形断面多芯絶縁電線1をドラムで巻き取る。
図4Aに示すように、銅または銅合金からなる導体2aと、ポリウレタンまたはポリエステルからなる絶縁層2bとからなる素線2を用いる。そして、図4Bに示すように、素線2を7本以上21本以下で第2方向v2に撚って第1撚線21にする。次に、図4Cに示すように、第1撚線21を3本以上9本以下で第2方向v2に撚って第2撚線22にする。次に、図5Aに示すように、第2撚線22を3本以上7本以下で第2方向v2に撚って第3撚線23にする。次に、図5Bに示すように、第3撚線23を3本以上7本以下で第1方向v1に撚って第4撚線24にする。そして、図5Cに示すように、絶縁性の繊維糸3を第4撚線24の外周に第1方向v1の逆方向の第2方向v2に巻き付ける。その後、成形装置のローラに挟んで横断面を平角状に成形することで方形断面多芯絶縁電線1にする。そして、成形した方形断面多芯絶縁電線1をドラムで巻き取る。
ローラは複数段設ける。
Claims (6)
- 導体の外周に絶縁層が形成されている素線の集合体を有し、前記素線の集合体は、前記素線を撚った第1撚線と前記第1撚線を撚った第2撚線と前記第2撚線を撚った第3撚線とを有する複合撚り構造であり、絶縁性の繊維糸が外周に巻かれており、横断面が平角状に成形されており、前記繊維糸の巻き方向は前記素線の集合体における最外周の撚線の撚り方向の逆方向であること
を特徴とする方形断面多芯絶縁電線。 - 前記素線の集合体は、前記第1撚線と前記第2撚線と前記第3撚線と第4撚線とからなる複合撚り構造であり、前記第1撚線、前記第2撚線、前記第3撚線および前記第4撚線の撚り方向はいずれも第1方向であり、前記繊維糸の巻き方向は前記第1方向の逆方向であること
を特徴とする請求項1に記載の方形断面多芯絶縁電線。 - 前記素線の集合体は、前記第1撚線と前記第2撚線と前記第3撚線と第4撚線とからなる複合撚り構造であり、前記第1撚線、前記第2撚線、前記第3撚線の撚り方向はいずれも第2方向であり、前記第4撚線の撚り方向は前記第2方向の逆方向であり、前記繊維糸の巻き方向は前記第2方向であること
を特徴とする請求項1に記載の方形断面多芯絶縁電線。 - 前記素線の数のうちの前記第1撚線を構成する第1素線数は前記素線の数のうちの前記第2撚線を構成する第2素線数と同数以上にして、前記素線の数のうちの前記第2撚線を構成する前記第2素線数は前記素線の数のうちの前記第3撚線を構成する第3素線数と同数以上にしたこと
を特徴とする請求項1~3のいずれか一項に記載の方形断面多芯絶縁電線。 - 前記導体は銅または銅合金からなり、前記絶縁層はポリウレタンからなり、前記繊維糸はポリエステルからなり、前記素線の数は2000本以上であること
を特徴とする請求項1~4のいずれか一項に記載の方形断面多芯絶縁電線。 - 導体の外周に絶縁層が形成されている素線を用いて、前記素線を撚った第1撚線と前記第1撚線を撚った第2撚線と前記第2撚線を撚った第3撚線とを有する複合撚り構造の前記素線の集合体とし、絶縁性の繊維糸を前記素線の集合体の外周に前記素線の集合体における最外周の撚線の撚り方向の逆方向に巻いて、その後、横断面を平角状に成形すること
を特徴とする方形断面多芯絶縁電線の製造方法。
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JPS61142608A (ja) * | 1984-12-14 | 1986-06-30 | 古河電気工業株式会社 | 高周波用リツツ線 |
JPS636815Y2 (ja) | 1983-03-10 | 1988-02-26 | ||
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JP2009245658A (ja) | 2008-03-28 | 2009-10-22 | Furukawa Electric Co Ltd:The | 平角電線及びその製造方法 |
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JP2019204837A (ja) * | 2018-05-22 | 2019-11-28 | 東京特殊電線株式会社 | 高周波コイル用電線及びコイル |
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JP6688107B2 (ja) * | 2016-03-02 | 2020-04-28 | 東芝産業機器システム株式会社 | コイル及びコイルの製造方法 |
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- 2022-06-13 EP EP22832786.2A patent/EP4297046A4/en active Pending
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