WO2022074900A1 - Fil isolé fusible et bobine à auto-fusion - Google Patents

Fil isolé fusible et bobine à auto-fusion Download PDF

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Publication number
WO2022074900A1
WO2022074900A1 PCT/JP2021/027615 JP2021027615W WO2022074900A1 WO 2022074900 A1 WO2022074900 A1 WO 2022074900A1 JP 2021027615 W JP2021027615 W JP 2021027615W WO 2022074900 A1 WO2022074900 A1 WO 2022074900A1
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WO
WIPO (PCT)
Prior art keywords
fused
layer
insulating
self
melting point
Prior art date
Application number
PCT/JP2021/027615
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English (en)
Japanese (ja)
Inventor
正宏 柳原
勝夫 羽生
昇平 駒村
Original Assignee
東京特殊電線株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 東京特殊電線株式会社 filed Critical 東京特殊電線株式会社
Priority to CN202180035142.XA priority Critical patent/CN115668410A/zh
Publication of WO2022074900A1 publication Critical patent/WO2022074900A1/fr

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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
    • H01B7/02—Disposition of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/06—Insulation of windings

Definitions

  • the present invention relates to a fused insulating electric wire and a self-bonded coil.
  • a fused insulating electric wire having a fused layer composed of an epoxy resin as a main component and a modified ether type polyester resin added, and having improved adhesiveness in a low temperature range of 100 to 150 ° C. is known.
  • Patent Document 1 Japanese Patent No. 2890280
  • Patent Document 2 Japanese Patent Application Laid-Open No. 3-08414.
  • a fused insulating electric wire having a fused layer formed by extruding a nylon-based hot melt resin containing a polyamide resin as a main component of a modified polyolefin resin and a thermoplastic resin to which calcium carbonate is added at a temperature of 200 ° C.
  • Patent Document 3 Japanese Unexamined Patent Publication No. 202-134191.
  • the heat resistant grade required for a general consumer equipment transformer is Class B (allowable temperature 130 ° C) or Class F (allowable temperature 155 ° C) specified in JIS standard (JIS C4003: 2010). Therefore, there is a problem that the insulating material of the transformer is deteriorated by the heat treatment when the fused insulated wire is made into a coil, and there is a problem that the performance of the fused insulated wire is deteriorated.
  • the present invention has been made in view of the above circumstances, and provides a fusion-sensitive insulated wire having a configuration excellent in insulation performance and having a configuration that can be applied to a coil of a transformer for consumer equipment and a self-bonding coil for consumer equipment.
  • the purpose is to provide.
  • a fused layer is formed on the outer periphery of an insulating layer formed on the outer periphery of a conductor, and the fused layer is a polyester-based hot melt adhesive containing a copolymerized polyester resin as a main component. It is a structure formed by extruding a thermoplastic resin to which an agent and a filler are added, and is characterized in that the melting point of the fused layer is more than 50 ° C. and 95 ° C. or lower.
  • the fused layer formed by extruding a thermoplastic resin containing a copolymerized polyester resin formed on the outer periphery of the insulating layer as a main component and having a filler added thereof provides an excellent insulating performance.
  • the melting point of the fused layer made of a thermoplastic resin containing a copolymerized polyester resin as a main component and a polyester-based hot melt adhesive added is set to a coil of a transformer for consumer equipment and a self-bonded coil for consumer equipment.
  • the melting point of the fused layer is preferably more than 60 ° C and less than 92 ° C.
  • the melting point of the fused layer is more preferably more than 68 ° C and less than 91 ° C.
  • the insulating layer is formed by wrapping an insulating tape. This makes it easy to reduce the outer diameter while improving the insulation. It is more preferable that the insulating layer has three layers.
  • the copolymerized polyester resin is polyethylene terephthalate, and the insulating property is further enhanced.
  • the filler is calcium carbonate, which further enhances the adhesion between the insulating layer and the fused layer.
  • the thickness of one side of the fusion layer in the radial direction is 20 to 40 ⁇ m, and the outer diameter may be suitable for a coil of a transformer for a small consumer device or a self-bonding coil for a small consumer device. It can be done easily.
  • a fusion layer is formed on the outer periphery of an insulating layer formed on the outer periphery of a conductor, and the fusion layer is a polyester hot melt adhesive containing a copolymerized polyester resin as a main component.
  • the fused insulating wire formed by extruding the thermoplastic resin to which the filler is added is spirally wound, and the adjacent fused layers in the fused insulated wire are fused to each other. It is characterized in that the melting point of the fused layer is more than 50 ° C. and 95 ° C. or lower.
  • the fused layer in the fused insulated wire can be a self-bonding coil made of a fused insulated wire having excellent insulating performance by preventing deterioration of the insulating layer while maintaining good adhesiveness. ..
  • the fused layer in the fused insulated wire constituting the self-bonded coil can prevent the self-bonded coil from unraveling due to the temperature during transportation and the temperature during storage while maintaining good adhesiveness.
  • the melting point of the fused layer is preferably more than 60 ° C and less than 92 ° C.
  • the melting point of the fused layer is more preferably more than 68 ° C and less than 91 ° C.
  • the copolymerized polyester resin is polyethylene terephthalate, and the filler is calcium carbonate.
  • the thickness of one side in the radial direction of the fused layer in the fused insulated wire is 20 to 40 ⁇ m. As a result, a high-performance and compact self-bonding coil can be realized.
  • a fusion-sensitive insulated wire having a configuration that is excellent in insulation performance and that can be applied to a coil of a transformer for consumer equipment or a self-bonding coil.
  • FIG. 1 is a structural diagram schematically showing the structure of a fused insulated wire according to an embodiment of the present invention.
  • FIG. 2 is a schematic external view showing an example of a self-bonding coil to which the fusion-sensitive insulated wire shown in FIG. 1 is applied.
  • the fused insulated wire 1 of the present embodiment is applied to, for example, a coil of a transformer for consumer equipment. It is also applied to, for example, a self-bonding coil.
  • the members having the same function may be designated by the same reference numerals, and the repeated description thereof may be omitted.
  • the fused insulating electric wire 1 shown in FIG. 1 includes a conductor 2, a first insulating layer 3a formed on the outer periphery of the conductor 2, a second insulating layer 3b formed on the outer periphery of the first insulating layer 3a, and a first layer. 2 It is configured to have a third insulating layer 3c formed on the outer periphery of the insulating layer 3b and a fusion layer 4 formed on the outer periphery of the third insulating layer 3c. That is, the insulating layer 3 is formed of three layers on the outer periphery of the conductor 2, and the fusion layer 4 is formed on the outer periphery thereof.
  • the conductor 2 may be any conductive material, but is preferably a conductive conductor that can be soldered.
  • a composite material such as copper or a copper alloy, aluminum or an aluminum alloy, or copper clad aluminum, or a metal having excellent solderability may be plated on these materials.
  • metal having excellent solderability include tin, solder, nickel, gold, silver, copper, palladium, or alloys of these materials.
  • the conductor 2 can be a single wire or a stranded conductor.
  • a lubricant or an antioxidant may be applied to the surface of each conductor wire.
  • the lubricant improves the slipperiness of the conductor wire, which makes the stranded wire easier, and also makes the individual conductor wire slippery when coiling with the finally obtained insulated wire.
  • the linearity can be made easier.
  • the antioxidant has an effect of preventing the oxidation of the conductor wire, and can prevent the oxidation that may occur at the time of twisting or winding the tape.
  • the single wire or the stranded wire constituting the conductor 2 may be provided with an insulating film in advance. Examples of the insulating film include an enamel film and an oxide film.
  • a urethane-based or polyester-based enamel film that does not interfere with soldering is preferable.
  • a conductor wire having an insulating film arranged in advance it is preferable to use.
  • a copper wire having a diameter of 4.5 mm is drawn to a diameter of 0.5 mm to form a round conductor 2 having a circular or elliptical cross section.
  • a stranded wire obtained by twisting a plurality of strands and having a cross section similar to a round shape such as a circle or an ellipse can be used as the conductor 2.
  • the conductor 2 is a stranded wire, it is preferable because the conductor 2 is composed of seven strands so that the cross section can be made into a shape closer to a round shape such as a circle or an ellipse.
  • the conductor 2 is a stranded wire composed of five or more strands.
  • the insulating layer 3 has one or more insulating layers.
  • the insulating layer 3 is preferably composed of two or more insulating layers.
  • Examples of the material of the insulating layer 3 include polyethylene naphthalate (PEN), polyimide (PI), polyphenylene sulfide (PPS), ethylene-ethylene tetrafluoroethylene copolymer (ETFE), and ethylene tetrafluoride-propylene hexafluoride.
  • PEN polyethylene naphthalate
  • PPS polyphenylene sulfide
  • ETFE ethylene-ethylene tetrafluoroethylene copolymer
  • ethylene tetrafluoride-propylene hexafluoride examples thereof include a polymer (FEP), a fluorinated resin copolymer (perfluoroalkoxy alkane resin: PFA), polyetheretherketone (PEEK), polyethylene terephthalate (PET), polyamide (PA) and the like
  • the insulating layer 3 is configured by tape winding insulation with insulating tape as an example.
  • the thickness of the insulating tape is preferably, for example, 4 ⁇ m or more and 25 ⁇ m or less.
  • the width of the insulating tape in this case is preferably, for example, 2 mm or more and 20 mm or less.
  • the thickness and width of the insulating tape are appropriately set according to the application, and the thickness and width of each insulating tape may be the same when two or more layers of tape are wound and insulated. May vary in thickness and width.
  • the insulating layer 3 is tape-wound with two or more layers by insulating tape.
  • the plurality of insulating tapes to be tape-wound and insulated at least the overlapping portion of the insulating tapes is an adhesive layer, and both are adhered to each other.
  • the adhesive layer is provided on at least one insulating tape among the plurality of insulating tapes.
  • the constituent material of the adhesive layer include an adhesive material that is solidified by heat, ionizing radiation, or the like.
  • the adhesive material to be bonded and solidified by heat is a heat-bondable material, and examples thereof include heat-bonded adhesive materials such as polyester-based, acrylic-based, and epoxy-based materials.
  • each insulating tape is spirally wound in the opposite direction to each other.
  • the winding form of each insulating tape is appropriately set according to the application.
  • the insulating layer 3 when configured to be tape-wound with three or more layers by insulating tape, high insulating properties can be realized.
  • This configuration is certified as an insulated wire that meets safety standards such as IEC60950, and can be used as a wire for coils such as an isolation transformer and an IH heater.
  • IEC60950 safety standards
  • IH heater an IH heater
  • an insulating tape is wrapped around the outer periphery of the conductor 2 to form the first insulating layer 3a.
  • the insulating tape is wrapped around the outer periphery of the first insulating layer 3a via the adhesive layer to form the second insulating layer 3b, and the insulating tape is wrapped around the outer periphery of the second insulating layer 3b via the adhesive layer.
  • the thickness of the insulating layer 3 on one side in the radial direction is, for example, 10 to 300 ⁇ m.
  • thermoplastic resin is extruded on the outer periphery of the conductor 2 to form the first insulating layer 3a, and the thermoplastic resin is formed on the outer periphery of the first insulating layer 3a.
  • the resin can be extruded to form the second insulating layer 3b, and the thermoplastic resin can be extruded on the outer periphery of the second insulating layer 3b to form the third insulating layer 3c.
  • the fused layer 4 is formed on the outer periphery of the third insulating layer 3c and is self-fused by heating.
  • the fused layer 4 is formed by extruding a thermoplastic resin containing a copolymerized polyester resin as a main component and a polyester-based hot melt adhesive and a filler added.
  • the temperature of the heating unit in the extruder is set to 170 to 250 ° C. as an example.
  • the melting point of the fused layer 4 is more than 60 ° C and less than 92 ° C.
  • the thickness of the fused layer 4 on one side in the radial direction is, for example, 10 to 50 ⁇ m.
  • the copolymerized polyester resin is polyethylene terephthalate
  • the filler is calcium carbonate (CaCO 3 ).
  • the self-bonding coil 10 shown in FIG. 2 is composed of the fused insulating electric wire 1 of the above-described embodiment.
  • the mandrel rod is wound around a mandrel rod (winding jig) having a diameter 5 to 20 times the diameter of the conductor 2 while keeping the fused layer 4 and the fused layer 4 in close contact with each other, and then the mandrel rod is removed.
  • the coil is heated by standing in a constant temperature bath set to a temperature higher than the melting point of the fusion layer 4 at 10 to 30 ° C. for 3 to 10 minutes to form a helical self-bonding coil 10 having an air core.
  • the temperature of the constant temperature bath is, for example, 110 to 130 ° C.
  • a tunnel furnace, a batch furnace, a hot air blower, or other known heating means can be applied.
  • the tip portion 10a and the tip portion 10b of the fused insulating electric wire 1 are immersed in a solder bath, and the conductor 2 is solder-plated.
  • the fused insulating electric wire 1 is heated by a solder bath or a soldering iron, the insulating layer 3 and the fused layer 4 are melted and the conductor 2 can be easily solder-plated.
  • the coil is not limited to the round self-bonding coil 10 as shown in FIG. 2, and the spiral coil has various shapes such as a record winding coil, a pancake coil, a square coil, and a conical coil. It is possible to apply to.
  • the manufacturing method of the fused insulating electric wire 1 is as described above.
  • the conductor 2 is a copper wire having a diameter of 0.5 mm, the thickness of one side of the first insulating layer 3a in the radial direction is 40 ⁇ m, the thickness of one side of the second insulating layer 3b in the radial direction is 30 ⁇ m, and the thickness of the third insulating layer 3b is 30 ⁇ m.
  • the thickness of the layer 3c on one side in the radial direction is 20 ⁇ m, and the thickness of the fused layer 4 on one side in the radial direction is 30 ⁇ m.
  • the melting point of the fused layer 4 was adjusted to be lowered by increasing the compatibility between the copolymerized polyester resin and the polyester-based hot melt adhesive. Then, the self-bonding coils 10 of Examples 1 to 10 were manufactured according to the above-mentioned method for manufacturing the self-bonding coil 10. The number of samples is 20 each. In Example 1, the melting point of the fused layer is 52.3 ° C, in Example 2 the melting point of the fused layer is 57.4 ° C, and in Example 3 the melting point of the fused layer is 61.7 ° C.
  • Example 4 the melting point of the fused layer is 68.0 ° C.
  • Example 5 the melting point of the fused layer is 70.1 ° C
  • Example 6 the melting point of the fused layer is 74.0 ° C.
  • Example 7 the melting point of the fused layer is 81.0 ° C
  • Example 8 the melting point of the fused layer is 83.8 ° C
  • Example 9 the melting point of the fused layer is 91.2 ° C.
  • the melting point of the fused layer is 95.0 ° C.
  • the melting point was about 100 ° C. (99 to 105 ° C.) when only the thermoplastic adhesive made of the copolymerized polyester resin was used.
  • the evaluation conditions for the adhesive strength of each sample are as follows.
  • the adhesive strength of the fused layer is determined by pulling the adhesive strength of the fused layer in the direction in which the tip on one side and the tip on the other side are opposite to each other in the wire drawing direction of the conductor in each sample at room temperature using a tensile tester.
  • the peel strength required for the fused layers adjacent to each other to peel off was measured.
  • the evaluation criteria for adhesive strength are as follows: A rank is when the average peel strength is 3N or more, B rank is when the average peel strength is 2N or more and less than 3N, and C rank is when the average peel strength is 1N or more and less than 2N. And said.
  • the evaluation conditions for the storage stability of each sample are as follows. For storage stability, each sample was allowed to stand at a predetermined storage temperature for 240 hours using a constant temperature bath, then taken out, and whether or not the fused layer had tack (stickiness) was checked by contact with the fingertips.
  • the evaluation criteria for storage stability were A rank for no tack at a storage temperature of 60 ° C, B rank for no tack at a storage temperature of 50 ° C, and C rank for no tack at a storage temperature of 40 ° C.
  • the temperature of 60 ° C. assumes the heat-resistant temperature required for mailing
  • the temperature of 40 ° C. assumes the heat-resistant temperature required for storage.
  • Table 1 shows the evaluation results of the adhesive strength and storage stability of each sample.
  • the adhesive strength was A rank and the storage stability was C rank.
  • the adhesive strength was A rank or B rank or higher, and the storage stability was A rank or B rank or higher.
  • the adhesive strength was C rank and the storage stability was A rank.
  • the adhesive strength is less than 1N, which is insufficient for a self-bonding coil. Examples 1 to 10 were found to have excellent properties in both adhesive strength and storage stability as compared with the prior art.
  • the meltable insulated wire of the above-described embodiment can be applied not only to a self-bondable coil but also to a coil of a transformer for consumer equipment and a known coil or inductor for electronic equipment.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulated Conductors (AREA)
  • Organic Insulating Materials (AREA)

Abstract

La présente invention aborde le problème de la fourniture d'un fil isolé fusible ayant une configuration qui a une excellente performance d'isolation et est applicable à des transformateurs et des bobines pour des appareils de consommation.　En tant que solution, un fil isolé fusible (1) présente des couches isolantes (3a), (3b), (3c) formée au niveau de la périphérie externe d'un conducteur (2), et une couche de fusion (4) formée au niveau de la périphérie externe de la couche isolante (3c), la couche de fusion (4) est formée par extrusion d'une résine thermoplastique contenant une résine de copolyester en tant que composant principal, d'un adhésif thermofusible à base de polyester et d'une charge, et le point de fusion de la couche de fusion (4) est de 50 °C à 95 °C (à l'exclusion de 50).
PCT/JP2021/027615 2020-10-05 2021-07-27 Fil isolé fusible et bobine à auto-fusion WO2022074900A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202180035142.XA CN115668410A (zh) 2020-10-05 2021-07-27 热粘性绝缘电线和自粘线圈

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020168353A JP7088999B2 (ja) 2020-10-05 2020-10-05 融着性絶縁電線の製造方法、及び自己融着コイルの製造方法
JP2020-168353 2020-10-05

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WO2022074900A1 true WO2022074900A1 (fr) 2022-04-14

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PCT/JP2021/027615 WO2022074900A1 (fr) 2020-10-05 2021-07-27 Fil isolé fusible et bobine à auto-fusion

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JP (2) JP7088999B2 (fr)
CN (1) CN115668410A (fr)
TW (1) TWI849330B (fr)
WO (1) WO2022074900A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60223866A (ja) * 1984-04-19 1985-11-08 Furukawa Electric Co Ltd:The 自己融着性絶縁電線
JPH10134643A (ja) * 1996-10-25 1998-05-22 Fujikura Ltd 通電接着用絶縁電線
JPH11176246A (ja) * 1997-10-24 1999-07-02 Furukawa Electric Co Ltd:The 多層絶縁電線及びそれを用いた変圧器
JP2002237218A (ja) * 2001-02-08 2002-08-23 Yazaki Corp ワイヤーハーネス用融着電線、及びその製造方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7001048B2 (ja) * 2018-12-25 2022-01-19 株式会社オートネットワーク技術研究所 融着層付き絶縁電線

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60223866A (ja) * 1984-04-19 1985-11-08 Furukawa Electric Co Ltd:The 自己融着性絶縁電線
JPH10134643A (ja) * 1996-10-25 1998-05-22 Fujikura Ltd 通電接着用絶縁電線
JPH11176246A (ja) * 1997-10-24 1999-07-02 Furukawa Electric Co Ltd:The 多層絶縁電線及びそれを用いた変圧器
JP2002237218A (ja) * 2001-02-08 2002-08-23 Yazaki Corp ワイヤーハーネス用融着電線、及びその製造方法

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Publication number Publication date
JP2022113735A (ja) 2022-08-04
TW202215453A (zh) 2022-04-16
CN115668410A (zh) 2023-01-31
JP7561160B2 (ja) 2024-10-03
JP2022060717A (ja) 2022-04-15
JP7088999B2 (ja) 2022-06-21
TWI849330B (zh) 2024-07-21

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