WO2023228468A1 - Fil torsadé, fil isolé et câble - Google Patents

Fil torsadé, fil isolé et câble Download PDF

Info

Publication number
WO2023228468A1
WO2023228468A1 PCT/JP2023/001424 JP2023001424W WO2023228468A1 WO 2023228468 A1 WO2023228468 A1 WO 2023228468A1 JP 2023001424 W JP2023001424 W JP 2023001424W WO 2023228468 A1 WO2023228468 A1 WO 2023228468A1
Authority
WO
WIPO (PCT)
Prior art keywords
wire
child
strands
stranded wire
stranded
Prior art date
Application number
PCT/JP2023/001424
Other languages
English (en)
Japanese (ja)
Inventor
昭人 星間
健太 松岡
健吾 金本
大五 佐藤
Original Assignee
住友電気工業株式会社
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 住友電気工業株式会社 filed Critical 住友電気工業株式会社
Publication of WO2023228468A1 publication Critical patent/WO2023228468A1/fr

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/08—Several wires or the like stranded in the form of a rope
    • 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
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • 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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring

Definitions

  • the present disclosure relates to stranded wires, insulated wires, and cables.
  • Stranded wires, insulated wires, and cables used in moving parts that bend during operation in FA (Factory Automation) equipment, robots, automobiles, other industrial equipment, consumer equipment, etc. have only tensile strength and other strengths. Rather, durability against repeated bending stress, that is, bending resistance is required.
  • a clad wire that includes a steel core wire and a copper coating layer that covers the drawn wire as the wire (for example, Japanese Patent Application Laid-Open No. 2020-21620 (Patent Document 1) reference).
  • the steel core wire contributes to improved strength, and the copper coating layer provides high conductivity.
  • a stranded wire according to the present disclosure is a stranded wire in which a plurality of child strands are twisted together.
  • Each of the child stranded wires has the same structure in which a plurality of wires each having a circular cross-sectional shape perpendicular to the longitudinal direction and having the same diameter are twisted together.
  • the strand includes a steel core wire and a copper or copper alloy coating layer that covers the surface of the core wire.
  • the twisting pitch of the child strands is 40 times or more the diameter of the circumscribed circle of the child strands.
  • the twisting pitch of the stranded wire is 5 times or more and 20 times or less the diameter of the circumscribed circle of the stranded wire.
  • FIG. 1 is a schematic diagram showing the structure of a twisted wire.
  • FIG. 2 is a schematic diagram showing the structure of a child strand.
  • FIG. 3 is a schematic cross-sectional view showing the structure of the wire.
  • FIG. 4 is a schematic cross-sectional view showing the structure of the twisted wire.
  • FIG. 5 is a schematic diagram for explaining the twist pitch of the twisted wire and the child twisted wire.
  • FIG. 6 is a flowchart outlining a method for manufacturing stranded wire.
  • FIG. 7 is a schematic diagram showing the structure of twisted wires in the second embodiment.
  • FIG. 8 is a schematic diagram showing the structure of an insulated wire in Embodiment 3.
  • FIG. 9 is a schematic diagram showing the structure of a cable in Embodiment 4.
  • FIG. 1 is a schematic diagram showing the structure of a twisted wire.
  • FIG. 2 is a schematic diagram showing the structure of a child strand.
  • FIG. 3 is a schematic cross-
  • FIG. 10 is a schematic diagram showing the structure of a cable in Embodiment 5.
  • FIG. 11 is a schematic perspective view showing a connection state between an insulated wire and a crimp terminal.
  • FIG. 12 is a schematic diagram for explaining the tensile test method.
  • FIG. 13 is a schematic perspective view showing the structure of a test device for a bending test.
  • FIG. 14 is a schematic diagram for explaining the bending test method.
  • FIG. 15 is a schematic diagram for explaining the bending test method.
  • connection with crimp terminals is important as a simple connection method.
  • the core wire may crack when connected to a crimp terminal. Due to this cracking of the core wire, a problem may arise in that the crimp strength decreases.
  • the stranded wire of the present disclosure is a stranded wire in which a plurality of child strands are twisted together.
  • Each of the child stranded wires has the same structure in which a plurality of wires each having a circular cross-sectional shape perpendicular to the longitudinal direction and having the same diameter are twisted together.
  • the strand includes a steel core wire and a copper or copper alloy coating layer that covers the surface of the core wire.
  • the twisting pitch of the child strands is 40 times or more the diameter of the circumscribed circle of the child strands.
  • the twisting pitch of the stranded wire is 5 times or more and 20 times or less the diameter of the circumscribed circle of the stranded wire.
  • the stranded wire of the present disclosure is configured by further twisting a plurality of child stranded wires, which are formed by twisting element wires together. This provides high flexibility and ensures a certain degree of bending resistance.
  • the strands constituting the child stranded wire include a steel core wire and a coating layer made of copper or copper alloy that covers the surface of the core wire. This makes it possible to achieve both strength and conductivity. Since the shape of the cross section perpendicular to the longitudinal direction of each strand is circular with the same diameter, local stress concentration during repeated bending is reduced, contributing to improvement in bending resistance.
  • the twisting pitch of the child stranded wire is set to 40 times or more the diameter of the circumscribed circle of the child stranded wire, and some of the wires are stress concentration is avoided. As a result, cracking of the core wire during connection with the crimp terminal is suppressed. Furthermore, by making the twisting pitch of the stranded wire five times or more the diameter of the circumscribed circle of the stranded wire, unevenness on the surface of the stranded wire can be suppressed and bending resistance can be improved.
  • the twisting pitch of the stranded wires is 20 times or less the diameter of the circumscribed circle of the stranded wires, it is possible to avoid concentration of stress on some child strands during bending.
  • the state in which the strands constituting a child strand have the same diameter means that the average diameter and the diameter of each strand are the same, with respect to the average diameter of a plurality of strands constituting each child strand A state in which the difference between the two is 6.0% or less.
  • the stranded wire of the present disclosure it is possible to not only improve bending resistance but also achieve both strength and conductivity, as well as suppress cracking of the core wire when connecting with a crimp terminal. .
  • the diameter of the strands may be 0.02 mm or more and 0.09 mm or less.
  • the diameter of the strands By setting the diameter of the strands to 0.02 mm or more, it is possible to suppress breakage of the strands in the stranded wire manufacturing process and improve productivity.
  • the diameter of the strand By setting the diameter of the strand to 0.09 mm or less, the difference in strain between the outside and the inside of the bend when the strand is bent is suppressed, and the bending resistance is further improved.
  • the tensile strength of the core wire may be 1800 MPa or more and 4500 MPa or less.
  • the tensile strength of the core wire is 1800 MPa or more, it becomes easy to impart sufficient strength to the core wire.
  • the tensile strength of the core wire is 4500 MPa or less, it becomes easy to impart sufficient toughness to the core wire.
  • the carbon content of the steel constituting the core wire may be 0.70% by mass or more and 0.95% by mass or less.
  • the carbon content of steel has a significant impact on the strength and toughness of the steel.
  • the area of the coating layer relative to the area of the strands may be 20% or more and 80% or less.
  • the area of the coating layer By setting the area of the coating layer to the area of the wire to be 20% or more, it becomes easy to obtain sufficient conductivity.
  • the stranded wire in one aspect of the present disclosure is a stranded wire in which a plurality of child stranded wires are twisted together.
  • Each of the child stranded wires has the same structure in which a plurality of wires each having a circular cross-sectional shape perpendicular to the longitudinal direction and having the same diameter are twisted together.
  • the strand includes a steel core wire and a copper or copper alloy coating layer that covers the surface of the core wire.
  • the twisting pitch of the child strands is 40 times or more the diameter of the circumscribed circle of the child strands.
  • the twisting pitch of the stranded wire is 5 times or more and 20 times or less the diameter of the circumscribed circle of the stranded wire.
  • the diameter of the core wire is 0.02 mm or more and 0.09 mm or less.
  • the tensile strength of the core wire is 1800 MPa or more and 4500 MPa or less.
  • the carbon content of the steel constituting the core wire is 0.70% by mass or more and 0.95% by mass or less.
  • the area of the coating layer relative to the area of the wire is 20% or more and 80% or less.
  • the plurality of child stranded wires are arranged in contact with the central child stranded wire so as to surround the central child stranded wire and the outer peripheral side of the central child stranded wire. and six first peripheral child strands.
  • the child strands include 2 or more and 20 or less strands.
  • a stranded wire in another aspect of the present disclosure is a stranded wire in which a plurality of child strands are twisted together.
  • Each of the child stranded wires has the same structure in which a plurality of wires each having a circular cross-sectional shape perpendicular to the longitudinal direction and having the same diameter are twisted together.
  • the strand includes a steel core wire and a copper or copper alloy coating layer that covers the surface of the core wire.
  • the twisting pitch of the child strands is 40 times or more the diameter of the circumscribed circle of the child strands.
  • the twisting pitch of the stranded wire is 5 times or more and 20 times or less the diameter of the circumscribed circle of the stranded wire.
  • the diameter of the core wire is 0.02 mm or more and 0.09 mm or less.
  • the tensile strength of the core wire is 1800 MPa or more and 4500 MPa or less.
  • the carbon content of the steel constituting the core wire is 0.70% by mass or more and 0.95% by mass or less.
  • the area of the coating layer relative to the area of the wire is 20% or more and 80% or less.
  • the plurality of child stranded wires are arranged in contact with the central child stranded wire so as to surround the central child stranded wire and the outer peripheral side of the central child stranded wire.
  • first circumferential twisted wires arranged in contact with the first circumferential twisted wires and 12 second circumferential twisted wires arranged in contact with the first circumferential twisted wires on the outer peripheral side of the area where the first circumferential twisted wires are arranged. and, including.
  • the child strands include 2 or more and 20 or less strands.
  • the child strands have a structure including a center child strand and a first peripheral child strand as described above, or a structure including a center child strand, a first peripheral child strand, and a second peripheral child strand.
  • the cross section perpendicular to the longitudinal direction of the stranded wire becomes nearly circular.
  • the child stranded wire includes two or more strands, the flexibility of the stranded wire can be ensured and the bending resistance can be improved.
  • the child stranded wire includes 20 or less strands, a practical outer diameter of the stranded wire can be obtained when used as an electric wire.
  • the coating layer may be a plating layer. That is, the covering layer may be formed by plating.
  • the plating layer is suitable as the coating layer of the present disclosure because its thickness can be easily adjusted and it can be formed by a simple process.
  • An insulated wire according to one embodiment of the present disclosure includes the stranded wire of the present disclosure described above and an insulating layer that covers the outer periphery of the stranded wire.
  • the insulated wire not only has improved bending resistance, but also achieves both strength and conductivity, and can suppress cracking of the core wire when connected to a crimp terminal.
  • An insulated wire according to another aspect of the present disclosure includes a core in which a plurality of insulated strands are twisted together, and a protective layer made of an insulator that covers the outer periphery of the core.
  • Each of the insulated strands includes the strands of the present disclosure described above and an insulating layer covering the outer periphery of the strands.
  • an insulated wire that not only improves bending resistance but also achieves both strength and conductivity, and can suppress cracking of the core wire when connected to a crimp terminal. can be provided.
  • a cable according to one aspect of the present disclosure includes the insulated wire according to the above-described one aspect of the present disclosure, a shield portion made of a conductor that is arranged to surround the outer periphery of the insulated wire, and a cable that is arranged so as to surround the outer periphery of the shield portion. an outer skin layer made of an insulator.
  • the present disclosure can not only improve bending resistance but also achieve both strength and conductivity, and suppress cracking of the core wire when connecting with a crimp terminal.
  • I can do it.
  • a cable according to another aspect of the present disclosure includes the insulated wire according to the other aspect of the present disclosure, a shield portion made of a conductor arranged so as to surround the outer periphery of the insulated wire, and a shield portion arranged so as to surround the outer periphery of the shield portion. and an outer skin layer made of an insulator.
  • the cable has not only improved bending resistance but also achieves both strength and conductivity, and can suppress cracking of the core wire when connecting with a crimp terminal.
  • FIG. 1 is a schematic diagram showing the structure of a twisted wire.
  • stranded wire 1 in this embodiment has a structure in which a plurality of child stranded wires 10 are twisted together.
  • the plurality of child strands 10 include one central child strand 10A and six first peripheral child strands 10B.
  • the central child strand 10A is located at the center.
  • the six first peripheral child strands 10B are arranged in contact with the center child strand 10A so as to surround the outer peripheral side of the center child strand 10A.
  • the central child strand 10A is in contact with all six first peripheral child strands 10B on its outer peripheral surface.
  • Each first peripheral child strand 10B is in contact with two circumferentially adjacent first peripheral child strands 10B and the center child strand 10A on the outer peripheral surface.
  • FIG. 2 is a schematic diagram showing the structure of the child strands.
  • each of the child strands 10 has the same structure in which a plurality of wires 100 whose cross-sectional shape perpendicular to the longitudinal direction is circular and have the same diameter are twisted together.
  • the plurality of wires 100 include one central wire 100A and six first peripheral wires 100B.
  • the child twisted wire 10 includes 2 or more and 20 or less (specifically 7) strands 100.
  • the central strand 100A is arranged at the center.
  • the six first peripheral wires 100B are arranged in contact with the center wire 100A so as to surround the outer peripheral side of the center wire 100A.
  • the central strand 100A is in contact with all six first peripheral strands 100B on its outer peripheral surface.
  • Each first peripheral strand 100B is in contact with two first peripheral strands 100B adjacent to each other in the circumferential direction and the center strand 100A on the outer peripheral surface.
  • FIG. 3 is a schematic cross-sectional view showing the structure of the wire.
  • FIG. 3 shows a cross section perpendicular to the longitudinal direction of the strand.
  • strand 100 includes a core wire 101 and a covering layer 102.
  • Core wire 101 is made of steel.
  • the diameter of the wire 100 is, for example, 0.02 mm or more and 0.09 mm or less.
  • the carbon content of the steel that constitutes the core wire 101 can be, for example, 0.70% by mass or more and 0.95% by mass or less.
  • the carbon content of the steel that constitutes the core wire 101 may be 0.90% by mass or less.
  • As the steel constituting the core wire 101 for example, steel corresponding to piano wire specified in JIS (Japanese Industrial Standards) G3502 can be adopted.
  • the tensile strength of the core wire 101 may be, for example, 1800 MPa or more and 4500 MPa or less.
  • the tensile strength of the core wire 101 can be 2500 MPa or more.
  • the tensile strength of the core wire 101 can be 3800 MPa or less.
  • the covering layer 102 is made of copper (Cu) or a copper alloy.
  • the covering layer 102 covers the surface 101A (outer peripheral surface) of the core wire 101.
  • the thickness of the covering layer 102 is constant in the circumferential direction.
  • the coating layer 102 may be a plating layer.
  • the covering layer 102 may be a layer formed by plating. In a cross section perpendicular to the longitudinal direction of the wire 100 (the cross section shown in FIG. 3), the area of the coating layer 102 relative to the area of the wire 100 may be 20% or more and 80% or less.
  • the state where the thickness of the coating layer 102 is constant in the circumferential direction means that the difference between the maximum value and the minimum value of the thickness is 7.0 with respect to the average value of the thickness of the coating layer 102 in each strand 100. % or less.
  • FIG. 4 is a schematic cross-sectional view showing the structure of the twisted wire.
  • FIG. 5 is a schematic diagram for explaining the twist pitch of the twisted wire and the child twisted wire.
  • FIG. 4 shows a cross section perpendicular to the longitudinal direction of the strand 1.
  • the twist pitch P of the child strands 10 is 40 times or more the diameter d2 of the circumscribed circle of the child strands 10.
  • the length is defined as the length measured parallel to the longitudinal direction of the child strands 10.
  • the twist pitch P of the stranded wire 1 is 5 times or more and 20 times or less the diameter d1 of the circumscribed circle of the stranded wire 1.
  • the reference numbers (excluding those written in parentheses) in FIG. is defined as the length measured parallel to the longitudinal direction of the strand 1.
  • the stranded wire 1 of this embodiment is configured by further twisting a plurality of child strands 10, which are formed by twisting the strands 100 together. This provides high flexibility and ensures a certain degree of bending resistance.
  • the strands 100 constituting the child stranded wire 10 include a core wire 101 made of steel and a coating layer 102 made of copper or copper alloy that covers the surface 101A of the core wire 101. This makes it possible to achieve both strength and conductivity. Since the shape of the cross section perpendicular to the longitudinal direction of each strand 100 is circular with the same diameter, local stress concentration during repeated bending is reduced, contributing to improvement in bending resistance.
  • the twist pitch P of the child stranded wire 10 is set to 40 times or more the diameter d2 of the circumscribed circle of the child stranded wire 10.
  • the strands 100 are appropriately rearranged when connecting with a crimp terminal, Concentration of stress on some of the wires 100 is avoided.
  • cracking of the core wire 101 during connection with a crimp terminal is suppressed.
  • the stranded wire 1 of this embodiment not only improves bending resistance, but also achieves both strength and conductivity, and can suppress cracking of the core wire when connecting with a crimp terminal. It is a twisted wire.
  • each of the plurality of child strands 10 constituting the stranded wire 1 has a central child strand 10A disposed at the center and a central child strand 10A arranged at the center in a cross section perpendicular to the longitudinal direction of the strand 1. It includes six first peripheral child strands 10B arranged in contact with the central child strand 10A so as to surround the outer circumferential side of the strand 10A.
  • the child twisted wire 10 includes 2 or more and 20 or less strands 100. As a result, the cross section perpendicular to the longitudinal direction of the stranded wire 1 becomes nearly circular. As a result, local stress concentration during repeated bending is reduced and bending resistance is improved.
  • the child stranded wire 10 includes two or more strands 100, it is possible to ensure the flexibility of the stranded wire 1 and improve its bending resistance. Since the child stranded wire 10 includes 20 or less strands 100, it is possible to obtain a practical outer diameter of the stranded wire 1 when used as an electric wire.
  • FIG. 6 is a flowchart outlining a method for manufacturing stranded wire.
  • a raw material steel wire preparation step is first performed as step S10.
  • a raw material steel wire is prepared.
  • a steel wire made of steel having a carbon content of 0.70% by mass or more and 0.95% by mass or less is prepared.
  • the steel constituting the raw steel wire contains silicon (Si) of 0.4% by mass to 2.5% by mass, manganese (Mn) of 0.6% to 0.9% by mass, and 0.1% by mass. It may contain chromium (Cr) in an amount of 1.8% by mass or less.
  • a piano wire rod for example, SWRS82A
  • G3502 a piano wire rod
  • step S20 patenting is performed on the raw material steel wire prepared in step S10. Specifically, after the raw steel wire is heated to a temperature range equal to or higher than the austenitization temperature (A1 point), it is rapidly cooled to a temperature range higher than the martensitization start temperature (MS point), and then maintained in the temperature range. A heat treatment is performed. As a result, the metal structure of the raw material steel wire becomes a fine pearlite structure with a small lamella interval.
  • the treatment of heating the raw steel wire to a temperature range of A1 point or higher is preferably carried out in an inert gas atmosphere from the viewpoint of suppressing the occurrence of decarburization.
  • a surface roughening step is performed as step S30.
  • a surface roughening treatment is performed on the raw steel wire that has been patented in step S20.
  • the surface roughness of the raw steel wire is increased by bringing the surface of the raw steel wire into contact with an acid such as hydrochloric acid or sulfuric acid.
  • the concentration of hydrochloric acid can be, for example, 35% by mass, and the concentration of sulfuric acid can be, for example, 65% by mass.
  • a coating layer forming step is performed as step S40.
  • a coating layer is formed on the first intermediate steel wire obtained by performing steps up to step S30.
  • a coating layer made of copper is formed on the first intermediate steel wire by plating.
  • a metal layer such as tin (Sn) or zinc (Zn) may be formed by plating, and by alloying these, a coating layer made of a copper alloy may be formed.
  • step S50 a wire drawing step is performed as step S50.
  • wire drawing drawing
  • the true strain in the wire drawing process in step S50 can be, for example, 2.3 or more and 4.9 or less, and preferably 3.0 or more and 4.0 or less.
  • the strand 100 in this embodiment is obtained.
  • step S60 a first stranding step is performed as step S60.
  • the child stranded wire 10 is produced by twisting together the strands 100 obtained by performing steps up to step S50. Specifically, referring to FIG. 2, seven strands 100 produced in steps S10 to S50 are prepared, and one strand is twisted as a center strand 100A and six strands are twisted as a first peripheral strand 100B. match. As a result, a child twisted wire 10 is obtained.
  • the twist pitch P of the child stranded wire 10 is set to be 40 times or more the diameter d2 of the circumscribed circle of the child stranded wire 10.
  • step S70 a second stranding step is performed as step S70.
  • the child strands 10 obtained in step S60 are twisted together to produce the strand 1.
  • seven child strands 10 produced in step S60 are prepared, one as the central child strand 10A, and six as the first peripheral child strand 10B. Twist together.
  • a twisted wire 1 is obtained.
  • the twist pitch P of the stranded wire 1 is set to be at least 5 times and at most 20 times the diameter d1 of the circumscribed circle of the stranded wire 1.
  • FIG. 7 is a schematic diagram showing the structure of twisted wires in the second embodiment.
  • stranded wire 1 in Embodiment 2 basically has the same structure as stranded wire 1 in Embodiment 1, and produces similar effects.
  • the stranded wire 1 of the second embodiment differs from that of the first embodiment in the number of child stranded wires 10 that constitute the stranded wire 1.
  • the plurality of child strands 10 constituting the strand 1 of the present embodiment include a central child strand 10A arranged at the center in a cross section perpendicular to the longitudinal direction of the strand 1; Six first peripheral child strands 10B arranged in contact with the center child strand 10A so as to surround the outer peripheral side of the center child strand 10A, and the outer periphery of the area where the first peripheral child strands 10B are arranged. Twelve second circumferential strands 10C are disposed on the side in contact with the first circumferential strands 10B.
  • the twisted wire 1 includes 19 child twisted wires 10.
  • the central child strand 10A is in contact with all six first peripheral child strands 10B on the outer peripheral surface.
  • Each first peripheral child strand 10B is in contact with two circumferentially adjacent first peripheral child strands 10B and the center child strand 10A on the outer peripheral surface.
  • Each of the second circumferential strands 10C is in contact with two circumferentially adjacent second circumferential strands 10C and a first circumferential strand 10B located on the inside in the radial direction on its outer peripheral surface.
  • the stranded wire 1 of this embodiment in which the number and arrangement of child stranded wires 10 included in the stranded wire 1 are changed in this way also has improved bending resistance, similar to the stranded wire 1 of the first embodiment. Rather, it is a stranded wire that achieves both strength and conductivity and can suppress cracking of the core wire when connected to a crimp terminal.
  • FIG. 8 is a schematic diagram showing the structure of an insulated wire in Embodiment 3.
  • insulated wire 3 of this embodiment includes a core 9 and an insulating layer 12.
  • the core 9 has a structure in which a plurality of (here, two) insulated strands 2 are twisted together.
  • the insulating layer 12 is made of an insulator such as resin.
  • the insulating layer 12 is a protective layer disposed to cover the outer periphery of the core 9.
  • the insulated stranded wire 2 includes the stranded wire 1 of the first embodiment or the second embodiment described above, and an insulating layer 11 that covers the outer periphery of the stranded wire 1.
  • the insulating layer 11 is made of an insulator such as resin.
  • the insulated wire 3 of this embodiment not only has improved bending resistance, but also achieves both strength and conductivity, and can suppress cracking of the core wire when connected to a crimp terminal.
  • the stranded wire 1 of form 1 or 2 it is possible not only to improve bending resistance but also to achieve both strength and conductivity, and to suppress cracking of the core wire 101 when connecting with a crimp terminal.
  • the insulated stranded wire 2 constituting the core 9 can also be used as an insulated wire. That is, an insulated stranded wire 2 as an insulated wire in another embodiment includes the stranded wire 1 of the first or second embodiment described above, and an insulating layer 11 that covers the outer periphery of the stranded wire 1.
  • the insulated stranded wire 2 not only has improved bending resistance, but also achieves both strength and conductivity, and can suppress cracking of the core wire 101 when connected to a crimp terminal.
  • the insulated wire not only improves bending resistance but also achieves both strength and conductivity, and can suppress cracking of the core wire 101 when connected to a crimp terminal. It becomes.
  • FIG. 9 is a schematic diagram showing the structure of a cable in Embodiment 4.
  • cable 300 includes stranded wire 1 of Embodiment 1 or Embodiment 2, insulating layer 4 disposed so as to cover outer periphery 1A of stranded wire 1, and outer peripheral surface of insulating layer 4. 4A, and an outer skin layer 6 that is arranged to cover the outer periphery 5A of the shield part 5.
  • the cable 300 includes the insulated stranded wire 2 as the insulated wire described in the third embodiment, and the shield portion 5 made of a conductor arranged so as to surround the outer periphery of the insulated stranded wire 2. , and an outer skin layer 6 made of an insulator disposed so as to surround the outer periphery of the shield portion 5.
  • the shield portion 5 may have a structure in which metal wires are woven. As the metal wire constituting the shield portion 5, the strand 100 in the above embodiment may be employed.
  • the cable 300 of this embodiment not only has improved bending resistance, but also achieves both strength and conductivity, and can suppress cracking of the core wire 101 when connecting with a crimp terminal.
  • the stranded wire 1 of form 1 or 2 it is possible not only to improve bending resistance but also to achieve both strength and conductivity, and to suppress cracking of the core wire 101 when connecting with a crimp terminal. It is a cable.
  • FIG. 10 is a schematic diagram showing the structure of a cable in Embodiment 5.
  • a cable 400 according to the present embodiment includes the insulated wire 3 (see FIG. 8) described in the third embodiment, and a conductor made of a conductor arranged so as to surround the outer periphery of the insulated wire 3. It includes a shield part 5 and an outer skin layer 6 made of an insulator and arranged so as to surround the outer periphery 5A of the shield part 5.
  • the shield portion 5 may have a structure in which metal wires are woven. As the metal wire constituting the shield portion 5, the strand 100 in the above embodiment may be employed.
  • the cable 400 of this embodiment not only has improved bending resistance, but also achieves both strength and conductivity, and can suppress cracking of the core wire 101 when connected to a crimp terminal.
  • the stranded wire 1 of form 1 or 2 it is possible not only to improve bending resistance but also to achieve both strength and conductivity, and to suppress cracking of the core wire 101 when connecting with a crimp terminal. It is a cable.
  • Twisted wire 1 was prepared according to the manufacturing method described in Embodiment 1 above.
  • the outer peripheral surface of this stranded wire 1 was covered with an insulating layer 11 to produce an insulated wire (insulated stranded wire 2).
  • SWRS82A which is a piano wire specified in JIS G3502, was used as the raw material steel wire prepared in step S10.
  • a pure copper coating layer 102 was formed by plating. By adjusting the thickness of the coating layer 102, the area ratio of the coating layer 102 in a cross section perpendicular to the longitudinal direction of the wire 100 was changed.
  • wire drawing was performed so that the outer diameter (diameter) of the wire 100 was 0.05 mm.
  • step S60 the twisting pitch of the child stranded wire 10 was changed to 60, and the number of strands 100 included in the child stranded wire 10 was varied in the range of 7 to 16. Further, in step S70, the twist pitch of the twisted wire 1 was changed. In this way, samples A to S were obtained. Further, in step S10, raw steel wires having different outer diameters and carbon contents were prepared, and by wire drawing in step S50, the outer diameter of the strands 100 was changed, thereby producing samples T to W.
  • FIG. 11 is a schematic perspective view showing a connection state between an insulated wire and a crimp terminal.
  • FIG. 12 is a schematic diagram for explaining the tensile test method.
  • the crimp terminal 80 includes a main body 83, a conductor barrel 81 connected to the main body 83, and an insulator connected to the opposite side of the conductor barrel 81 from the side connected to the main body 83.
  • ration barrel 82 When connecting the insulated stranded wire 2, which is an insulated wire, to the crimp terminal 80, the insulating layer 11 at the end of the insulated stranded wire 2 is first removed to expose the stranded wire 1.
  • the conductor barrel 81 by crimping the conductor barrel 81, the exposed strands 1 are held by the conductor barrel 81, and the insulating layer 11 is held by the insulation barrel 82. At this time, if cracks occur in the core wire 101 of the strands 100 constituting the stranded wire 1 held by the conductor barrel 81, the strength of the connection between the conductor barrel 81 and the stranded wire 1 decreases.
  • Fig. 13 is a schematic perspective view showing the structure of a test device for a bending test.
  • 14 and 15 are schematic diagrams for explaining the bending test method.
  • bending test device 70 includes mandrels 71 and 72, a pair of jigs 73a and 73b, and a weight 74.
  • a weight 74 is attached to one end of the insulated stranded wire 2 in the longitudinal direction. In this test, the mass of the weight 74 was 100 g.
  • a pair of jigs 73a and 73b sandwich the insulated strands 2.
  • Mandrels 71 and 72 each having a cylindrical shape are arranged between the weight 74 and the jigs 73a and 73b.
  • the outer circumferential surface 711 of the mandrel 71 and the outer circumferential surface 721 of the mandrel 72 contact the outer circumferential surface of the insulated stranded wire 2 .
  • the longitudinal direction of the mandrels 71 and 72 is perpendicular to the longitudinal direction of the insulated stranded wire 2.
  • the diameter Q of the mandrels 71, 72 is 20 mm (see FIGS. 14 and 15).
  • the state shown in FIG. 13 is assumed to be the initial state. Then, the test is conducted as follows.
  • the insulated strand 2 is bent in the direction of arrow R1 in FIG. At this time, the insulated strands 2 are bent along the outer circumferential surface 711 of the mandrel 71, as shown in FIG. The maximum bending angle ⁇ 1 of the insulated strands 2 is 90°.
  • the insulated strands 2 are bent in the direction of arrow R2 in FIG. At this time, the insulated strands 2 are bent along the outer peripheral surface 721 of the mandrel 72, as shown in FIG.
  • the maximum bending angle ⁇ 2 of the insulated strands 2 is 90°.
  • the above operation was repeated, and the number of times each sample was bent until the strand 1 in the stranded insulated wire 2 broke was investigated.
  • Table 1 shows the experimental results of (1) and (2) above.
  • the state where the column of twist pitch/ d2 of child stranded wire in Table 1 is ⁇ (infinity) means the state in which the strands constituting the child strand are not twisted, that is, the strands are in the longitudinal direction of the child strand. It means the state of being arranged parallel to the direction.
  • the expression "No breakage" in the column of the number of bends before breakage in Table 1 means that no breakage occurred after 10 million bendings and the test was discontinued.
  • samples F and G in which the twist pitch/d 1 (diameter of the circumscribed circle of the stranded wire) of the stranded wire is outside the range of 5 or more and 20 or less, which is the range of the present disclosure, other samples are Although it did not break even after repeated bending, it did break at an early stage.
  • sample G since the surface of the stranded wire 1 had large irregularities, it was also confirmed that poor insulation occurred. From the above experimental results, it was confirmed that the stranded wire, insulated wire, and cable of the present disclosure not only improve bending resistance but also suppress cracking of the core wire when connected to a crimp terminal.

Landscapes

  • Non-Insulated Conductors (AREA)

Abstract

Fil torsadé obtenu par torsion d'une pluralité de sous-fils torsadés ensemble. Chacun des sous-fils torsadés présente la même structure dans laquelle une pluralité de brins dont les formes de section transversale perpendiculaires au sens de la longueur sont des cercles de même diamètre, sont torsadés ensemble. Les brins comprennent un fil d'âme en acier, et une couche de revêtement en cuivre ou en alliage de cuivre revêtant la surface du fil d'âme. Le pas de torsion des sous-fils torsadés est d'au moins 40 fois le diamètre du cercle circonscrit des sous-fils torsadés. Le pas de torsion des fils torsadés est de 5 à 20 fois le diamètre du cercle circonscrit des fils torsadés.
PCT/JP2023/001424 2022-05-26 2023-01-19 Fil torsadé, fil isolé et câble WO2023228468A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022085853 2022-05-26
JP2022-085853 2022-05-26

Publications (1)

Publication Number Publication Date
WO2023228468A1 true WO2023228468A1 (fr) 2023-11-30

Family

ID=88918905

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/001424 WO2023228468A1 (fr) 2022-05-26 2023-01-19 Fil torsadé, fil isolé et câble

Country Status (1)

Country Link
WO (1) WO2023228468A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014112174A1 (fr) * 2013-01-16 2014-07-24 住友電装株式会社 Conducteur de fil torsadé, fil électrique guipé, et procédé de production de conducteur de fil torsadé
JP2015201322A (ja) * 2014-04-08 2015-11-12 日立金属株式会社 電線
WO2020261564A1 (fr) * 2019-06-28 2020-12-30 住友電気工業株式会社 Fil d'acier revêtu de cuivre, ressort, fil toronné, fil électrique isolé et câble
JP2021082488A (ja) * 2019-11-20 2021-05-27 日立金属株式会社 多心ケーブル

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014112174A1 (fr) * 2013-01-16 2014-07-24 住友電装株式会社 Conducteur de fil torsadé, fil électrique guipé, et procédé de production de conducteur de fil torsadé
JP2015201322A (ja) * 2014-04-08 2015-11-12 日立金属株式会社 電線
WO2020261564A1 (fr) * 2019-06-28 2020-12-30 住友電気工業株式会社 Fil d'acier revêtu de cuivre, ressort, fil toronné, fil électrique isolé et câble
JP2021082488A (ja) * 2019-11-20 2021-05-27 日立金属株式会社 多心ケーブル

Similar Documents

Publication Publication Date Title
CN113994439B (zh) 铜覆钢线、弹簧、绞合线、绝缘电线以及电缆
KR950005852B1 (ko) 자동차용 전선도체
CN112534519B (zh) 铜覆钢线以及绞合线
JP6185419B2 (ja) アルミニウムめっきステンレス鋼線
JPH0731939B2 (ja) 高強度、良屈曲性導体
WO2018092350A1 (fr) Fil torsadé de faisceau de fils et faisceau de fils
WO2023228468A1 (fr) Fil torsadé, fil isolé et câble
US11459644B2 (en) Copper-coated steel wire and canted coil spring
JP5442294B2 (ja) 電線導体の製造方法、及び、電線導体と絶縁電線
JP5497321B2 (ja) 圧縮撚線導体とその製造方法及び絶縁電線
JP5136248B2 (ja) 銅合金線およびその製造方法、銅合金撚線およびその製造方法、これらを用いた絶縁電線、同軸ケーブル並びに多芯ケーブル
CN113811958B (zh) 铜包钢线、绞合线、绝缘电线及线缆
JPH06187831A (ja) 自動車用電線導体および自動車用電線
CN107887053B (zh) 镀敷铜线、镀敷绞线和绝缘电线以及镀敷铜线的制造方法
JP6424925B2 (ja) めっき銅線、めっき撚線及び絶縁電線並びにめっき銅線の製造方法
JP7180774B2 (ja) 銅被覆鋼線、撚線、絶縁電線およびケーブル
US10293397B2 (en) Metal wire and electric wire
JP2008021562A (ja) シールドケーブル及びその製造方法
JP2021068572A (ja) 耐屈曲絶縁電線
JP2022002191A (ja) 電力ケーブル用導体及び中間層を有する電力ケーブル用導体の製造方法
JP2000176534A (ja) ステンレス鋼被覆銅線およびその製造方法
JPH03184212A (ja) 自動車用電線導体
JP2018056101A (ja) 電線、及び端子付き電線
JPS63252302A (ja) 高強度導電性細線

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23811349

Country of ref document: EP

Kind code of ref document: A1