WO2015053267A1 - Electric wire for crimp terminals, and crimp terminal with electric wire - Google Patents

Electric wire for crimp terminals, and crimp terminal with electric wire Download PDF

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Publication number
WO2015053267A1
WO2015053267A1 PCT/JP2014/076815 JP2014076815W WO2015053267A1 WO 2015053267 A1 WO2015053267 A1 WO 2015053267A1 JP 2014076815 W JP2014076815 W JP 2014076815W WO 2015053267 A1 WO2015053267 A1 WO 2015053267A1
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Prior art keywords
core wire
wire
electric wire
strands
crimp terminal
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PCT/JP2014/076815
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French (fr)
Japanese (ja)
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洋人 中田
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矢崎総業株式会社
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Publication of WO2015053267A1 publication Critical patent/WO2015053267A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/188—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping having an uneven wire-receiving surface to improve the contact
    • 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
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion

Definitions

  • the present invention relates to a crimp terminal electric wire and a crimp terminal with an electric wire.
  • Patent Documents 1 and 2 show the following configuration as a configuration of electrical connection between an electric wire and a crimp terminal. That is, the crimp terminal has a core wire crimping portion and a sheath crimping portion, and the electric wire has a core wire composed of a plurality of strands and an insulating sheath covering the core wire, and the core wire is exposed by removing the insulating sheath on the tip side.
  • the crimp terminal crimps and crimps the core wire exposed by the core wire crimping portion, and crimps and crimps the insulating sheath by the outer skin crimping portion.
  • JP 2010-10000 A Japanese Patent Application Laid-Open No. 2010-10001
  • an object of the present invention is to provide an electric wire for electric wire crimping and a crimp terminal with electric wire that can reliably ensure conduction between the core wires and reduce the resistance of the entire circuit.
  • the crimp terminal electric wire of the present invention is a crimp terminal electric wire having a core wire composed of a plurality of strands and an insulating sheath covering the core wire, and the core wire from which the insulating sheath has been removed is crimped to the crimp terminal.
  • the core wire may be made of aluminum or an aluminum alloy, and may be formed of two types of aluminum strands having different hardnesses.
  • the core wire may be an array pattern in which strands having different hardnesses are adjacent to each other at one or more locations.
  • the crimp terminal with an electric wire of the present invention is a crimp terminal with an electric wire that has a core wire composed of a plurality of strands and an insulating sheath covering the core wire, and crimps the core wire from which the insulating sheath has been removed, and has a plurality of different hardnesses. It is characterized by crimping a core wire composed of various types of strands.
  • the crimp terminal with electric wire of the present invention may be one in which a core wire made of aluminum or aluminum alloy composed of two types of strands having different hardnesses is crimped.
  • FIG. 1 shows an embodiment of the present invention, and is a perspective view before an electric wire is crimped to a crimp terminal.
  • FIG. 2 is a side view of a crimp terminal in which an electric wire is crimped according to an embodiment of the present invention.
  • FIG. 3 shows an embodiment of the present invention and is a cross-sectional view taken along line AA of FIG. 4 (a) to 4 (d) show an embodiment of the present invention, and FIG. 4 (a) is a perspective view of a core wire (a soft wire is displayed in white and a hard wire is hatched).
  • 4 (b) to 4 (d) are diagrams showing modifications of the arrangement pattern of the core wires.
  • FIG. 1 shows an embodiment of the present invention, and is a perspective view before an electric wire is crimped to a crimp terminal.
  • FIG. 2 is a side view of a crimp terminal in which an electric wire is crimped according to an embodiment of the present invention.
  • FIG. 3 shows an embodiment of
  • FIG. 5 is a perspective view of a caulking jig according to an embodiment of the present invention.
  • FIG. 6 is a side view illustrating an embodiment of the present invention and illustrating a caulking operation using a caulking jig.
  • FIG. 7 is a conceptual diagram showing an embodiment of the present invention and showing the difference in elongation between a soft wire and a hard wire during a caulking and crimping process.
  • the crimp terminal electric wire (hereinafter referred to as electric wire W) includes a core wire 1 composed of a plurality of strands 1 a and 1 b and a core wire 1. It is comprised from the insulation outer skin 2 which covers outer periphery.
  • the insulating sheath 2 is removed and the core wire 1 is exposed.
  • the core wire 1 is made of aluminum or aluminum alloy (hereinafter, made of aluminum). That is, the electric wire W is an aluminum electric wire.
  • the core wire 1 is formed of two types of aluminum strands 1a and 1b having different hardnesses.
  • the hardness of the strand 1a is lower than the hardness of the strand 1b, and the strand 1a is softer than the strand 1b.
  • the soft strand 1a and the hard strand 1b are mixed, and are mutually twisted. 4 (a) to 4 (d) and FIG. 7, for the sake of clarity, the soft strands 1a are displayed in white and the hard strands 1b are displayed in hatching.
  • the core wire 1 has an array pattern in which a soft strand 1a and a hard strand 1b are adjacent to each other at one or more locations.
  • adjacent at any one or more places means that when the core wire 1 is observed in a cross section perpendicular to the axial direction of the core wire 1, it is also around any soft strand 1 a constituting the core wire 1.
  • the at least one hard wire 1b is positioned so as to be in direct contact with the soft wire 1a, and at least one soft wire is disposed around any hard wire 1b constituting the core wire 1. It means that the strand 1a is positioned so as to be in direct contact with the hard strand 1b.
  • Examples of the arrangement pattern in which the soft wire 1a and the hard wire 1b are adjacent to each other at one or more locations include patterns shown in FIGS. 4 (b) to 4 (d) in addition to FIG. 4 (a). It is done.
  • the crimp terminal 10 with electric wire (hereinafter referred to as a crimp terminal) is made of a copper alloy and is formed by bending a plate cut into a predetermined shape.
  • the crimp terminal 10 has a mating terminal connection portion 11 and a wire connection portion 15.
  • the electric wire connecting portion 15 includes a core wire crimping portion 16 and an outer skin crimping portion 17.
  • the core wire crimping part 16 has a base part 16a and a pair of caulking piece parts 16b extending from both sides of the base part 16a.
  • a large number of round grooves 18 are formed on the inner surface of the base portion 16a of the core wire crimping portion 16 and the pair of caulking piece portions 16b.
  • the outer skin crimping part 17 has a base part 17a and a pair of caulking piece parts 17b extending from both sides of the base part 17a.
  • the crimp terminal 10 crimps and crimps the core wire 1 exposed by the core wire crimping portion 16, and crimps and crimps the insulating sheath 2 by the outer skin crimping portion 17.
  • the crimp terminal 10 is crimped by a crimping jig 20 shown in FIG.
  • the caulking jig 20 has a caulking groove 21 having a final caulking outer peripheral shape on the caulking tip side.
  • FIG. 6 when the pair of core wire crimping pieces 16 b are pressed from above by the crimping jig 20, the pair of crimping pieces 16 b are plastically deformed along the crimping grooves 21.
  • the core wire 1 of the electric wire W receives a crimping force. Then, as shown in FIG. 7, the strands 1a and 1b of the core wire 1 extend to generate a new surface.
  • the soft strand 1a is softer than the hard strand 1b, the soft strand 1a has a larger amount of elongation than the hard strand 1b.
  • the soft wires 1a and the hard wires 1b have different elongation amounts, so that the wires 1a and 1b on which the new surface is generated slide, and adhesion occurs between the slide wires 1a and 1b. . Adhesion occurs not only between the strands 1a and 1b but also between the strands 1a and 1b. By adhering the strands, conduction between the strands can be reliably ensured, and the resistance of the entire circuit can be reduced.
  • a groove 18 is provided on the inner surface of the core wire crimping portion 16. Since the wire 1a of the core wire 1 is deformed so as to enter the groove 18, that is, is deformed by extension, a new surface is generated, and adhesion occurs due to receiving a compressive force. Therefore, the conduction resistance between the strands 1a can also be reduced by the groove 18 (serration).
  • Core wire 1 is made of aluminum.
  • the aluminum wires 1a and 1b have a harder oxide film formed on the surface than those made of copper alloy. Therefore, the aluminum core wire 1 has a problem of an increase in electrical resistance due to the conduction resistance between the strands 1a and 1b.
  • the oxide film on the surface of the strands 1a and 1b can be easily removed.
  • a new surface can be effectively generated on the surface of the strands, and the occurrence of adhesion between the strands can be promoted. Therefore, the conduction resistance between the strands can be reduced.
  • the core wire 1 is an array pattern in which the strands 1a and 1b having different hardnesses are adjacent to each other at one or more locations. Therefore, since any soft strand 1a and hard strand 1b slide at one or more places during crimping, conduction can be reliably ensured for all the strands 1a and 1b.
  • the core wire 1 is made of aluminum, but the present invention can also be applied to a core wire 1 other than aluminum (for example, copper alloy).
  • the core wire 1 is formed of two types of strands 1a and 1b having different hardnesses, but may be formed of three or more types of strands having different hardnesses.
  • the strands 1a and 1b having different hardnesses can be formed by different tempering or composition, for example.
  • the serration provided on the inner surface of the core wire crimping portion 16 is the groove 18, but it may be a protrusion, or may be both a groove and a protrusion.
  • each strand of the core wire when the core wire receives a crimping force in the crimping process by the crimp terminal, each strand of the core wire is stretched to generate a new surface, and the elongation amount is different due to the different hardness between the strands. For this reason, the strands on which the new surface is generated slide and adhere to each other, so that conduction between the strands can be reliably ensured and the resistance of the entire circuit can be reduced.

Abstract

An electric wire (W) for crimp terminals, which comprises a core wire (1) that is composed of a plurality of strands (1a, 1b) and an insulating outer cover (2) that covers the core wire (1). The core wire (1), from which the insulating outer cover (2) is removed, is compression bonded to a crimp terminal (10). The core wire (1) is composed of a plurality of kinds of strands (1a, 1b) that have different hardnesses from each other.

Description

圧着端子用電線及び電線付き圧着端子Crimp terminal wire and crimp terminal with wire
　本発明は、圧着端子用電線及び電線付き圧着端子に関する。 The present invention relates to a crimp terminal electric wire and a crimp terminal with an electric wire.
　特許文献１、２には、電線と圧着端子間の電気接続の構成として、次のような構成が示されている。つまり、圧着端子は、芯線圧着部と外皮圧着部を有し、電線は、複数の素線からなる芯線と芯線を覆う絶縁外皮とを有し、先端側の絶縁外皮が除去されて芯線が露出されている。そして、圧着端子は、芯線圧着部によって露出された芯線を加締め圧着し、外皮圧着部によって絶縁外皮を加締め圧着している。 Patent Documents 1 and 2 show the following configuration as a configuration of electrical connection between an electric wire and a crimp terminal. That is, the crimp terminal has a core wire crimping portion and a sheath crimping portion, and the electric wire has a core wire composed of a plurality of strands and an insulating sheath covering the core wire, and the core wire is exposed by removing the insulating sheath on the tip side. Has been. And the crimp terminal crimps and crimps the core wire exposed by the core wire crimping portion, and crimps and crimps the insulating sheath by the outer skin crimping portion.
特開２０１０－１００００号公報JP 2010-10000 A 特開２０１０－１０００１号公報Japanese Patent Application Laid-Open No. 2010-10001
　このような電線と圧着端子との圧着箇所では、芯線の素線間の導通が得られない場合に回路全体の抵抗が高くなる。 In such a crimped portion between the electric wire and the crimp terminal, the resistance of the entire circuit becomes high when conduction between the core wires is not obtained.
　そこで、本発明は、芯線の素線間の導通を確実に確保でき、回路全体の抵抗を低減できる電線圧着用電線、及び、電線付き圧着端子を提供することを目的とする。 Therefore, an object of the present invention is to provide an electric wire for electric wire crimping and a crimp terminal with electric wire that can reliably ensure conduction between the core wires and reduce the resistance of the entire circuit.
　本発明の圧着端子用電線は、複数の素線からなる芯線と芯線を覆う絶縁外皮とを有し、絶縁外皮が除去された芯線が圧着端子に圧着される圧着端子用電線であって、芯線は、互いに硬度が異なる複数種類の素線から形成されていることを特徴とする圧着端子用電線である。 The crimp terminal electric wire of the present invention is a crimp terminal electric wire having a core wire composed of a plurality of strands and an insulating sheath covering the core wire, and the core wire from which the insulating sheath has been removed is crimped to the crimp terminal. Is an electric wire for crimping terminals characterized in that it is formed of a plurality of types of strands having different hardnesses.
　本発明の圧着端子用電線において、芯線は、アルミニウム製又はアルミニウム合金製であり、互いに硬度が異なる二種類のアルミ製の素線から形成されているものであっても良い。 In the crimp terminal electric wire of the present invention, the core wire may be made of aluminum or an aluminum alloy, and may be formed of two types of aluminum strands having different hardnesses.
　本発明の圧着端子用電線において、芯線は、互いに硬度が異なる素線同士が１箇所以上で隣接する配列パターンであっても良い。 In the crimp terminal electric wire of the present invention, the core wire may be an array pattern in which strands having different hardnesses are adjacent to each other at one or more locations.
　本発明の電線付き圧着端子は、複数の素線からなる芯線と芯線を覆う絶縁外皮とを有し、絶縁外皮が除去された芯線を圧着する電線付き圧着端子であって、互いに硬度が異なる複数種類の素線からなる芯線を圧着していることを特徴とする。 The crimp terminal with an electric wire of the present invention is a crimp terminal with an electric wire that has a core wire composed of a plurality of strands and an insulating sheath covering the core wire, and crimps the core wire from which the insulating sheath has been removed, and has a plurality of different hardnesses. It is characterized by crimping a core wire composed of various types of strands.
　本発明の電線付き圧着端子は、互いに硬度が異なる二種類の素線からなるアルミニウム製又はアルミニウム合金製の芯線を圧着しているものであっても良い。 The crimp terminal with electric wire of the present invention may be one in which a core wire made of aluminum or aluminum alloy composed of two types of strands having different hardnesses is crimped.
図１は、本発明の一実施形態を示し、圧着端子に電線を圧着する前の斜視図である。FIG. 1 shows an embodiment of the present invention, and is a perspective view before an electric wire is crimped to a crimp terminal. 図２は、本発明の一実施形態を示し、電線を圧着した圧着端子の側面図である。FIG. 2 is a side view of a crimp terminal in which an electric wire is crimped according to an embodiment of the present invention. 図３は、本発明の一実施形態を示し、図２のＡ－Ａ線断面図である。FIG. 3 shows an embodiment of the present invention and is a cross-sectional view taken along line AA of FIG. 図４（ａ）～（ｄ）は、本発明の一実施形態を示し、図４（ａ）は電線の芯線（柔らかい素線を白抜き表示、硬い素線をハッチング表示）の斜視図、図４（ｂ）～図４（ｄ）は芯線の素線の配列パターンの各変形例を示す図である。4 (a) to 4 (d) show an embodiment of the present invention, and FIG. 4 (a) is a perspective view of a core wire (a soft wire is displayed in white and a hard wire is hatched). 4 (b) to 4 (d) are diagrams showing modifications of the arrangement pattern of the core wires. 図５は、本発明の一実施形態を示し、加締め治具の斜視図である。FIG. 5 is a perspective view of a caulking jig according to an embodiment of the present invention. 図６は、本発明の一実施形態を示し、加締め治具による加締め作業を説明する側面図である。FIG. 6 is a side view illustrating an embodiment of the present invention and illustrating a caulking operation using a caulking jig. 図７は、本発明の一実施形態を示し、加締め圧着過程中の柔らかい素線と硬い素線間の伸び量の相違を示す概念図である。FIG. 7 is a conceptual diagram showing an embodiment of the present invention and showing the difference in elongation between a soft wire and a hard wire during a caulking and crimping process.
　以下、本発明の一実施形態を図面に基づいて説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
　図１～図７は本発明の一実施形態を示す。図１、図２、図３、図４（ａ）～（ｄ）に示すように、圧着端子用電線（以下、電線Ｗ）は、複数の素線１ａ，１ｂからなる芯線１と芯線１の外周を覆う絶縁外皮２とから構成されている。 1 to 7 show an embodiment of the present invention. As shown in FIGS. 1, 2, 3, and 4 (a) to 4 (d), the crimp terminal electric wire (hereinafter referred to as electric wire W) includes a core wire 1 composed of a plurality of strands 1 a and 1 b and a core wire 1. It is comprised from the insulation outer skin 2 which covers outer periphery.
　電線Ｗの先端側は、絶縁外皮２が除去されて芯線１が露出されている。芯線１は、図４（ａ）～（ｄ）に詳しく示すように、アルミニウム製又はアルミニウム合金製（以下、アルミ製）である。つまり、電線Ｗは、アルミ電線である。 At the front end side of the electric wire W, the insulating sheath 2 is removed and the core wire 1 is exposed. As shown in detail in FIGS. 4A to 4D, the core wire 1 is made of aluminum or aluminum alloy (hereinafter, made of aluminum). That is, the electric wire W is an aluminum electric wire.
　芯線１は、互いに硬度が異なる二種類のアルミ製の素線１ａ，１ｂから形成されている。素線１ａの硬度は素線１ｂの硬度よりも低く、素線１ａは素線１ｂよりも柔らかい。芯線１において、柔らかい素線１ａと硬い素線１ｂとが混在され、且つ、互いに撚られている。図４（ａ）～（ｄ）、図７では、明確化のために、柔らかい素線１ａを白抜き表示、硬い素線１ｂをハッチング表示してある。芯線１は、図４（ａ）に示すように、柔らかい素線１ａと硬い素線１ｂがいずれか１箇所以上で隣接する配列パターンになっている。 The core wire 1 is formed of two types of aluminum strands 1a and 1b having different hardnesses. The hardness of the strand 1a is lower than the hardness of the strand 1b, and the strand 1a is softer than the strand 1b. In the core wire 1, the soft strand 1a and the hard strand 1b are mixed, and are mutually twisted. 4 (a) to 4 (d) and FIG. 7, for the sake of clarity, the soft strands 1a are displayed in white and the hard strands 1b are displayed in hatching. As shown in FIG. 4A, the core wire 1 has an array pattern in which a soft strand 1a and a hard strand 1b are adjacent to each other at one or more locations.
　ここで、「いずれか１箇所以上で隣接する」とは、芯線１を、芯線１の軸方向に垂直な断面で観察したときに、芯線１を構成するいずれの柔らかい素線１ａの周りにも、少なくとも１本以上の硬い素線１ｂが柔らかい素線１ａと直接接触するように位置しており、また、芯線１を構成するいずれの硬い素線１ｂの周りにも、少なくとも１本以上の柔らかい素線１ａが、硬い素線１ｂと直接接触するように位置していることを意味する。 Here, “adjacent at any one or more places” means that when the core wire 1 is observed in a cross section perpendicular to the axial direction of the core wire 1, it is also around any soft strand 1 a constituting the core wire 1. The at least one hard wire 1b is positioned so as to be in direct contact with the soft wire 1a, and at least one soft wire is disposed around any hard wire 1b constituting the core wire 1. It means that the strand 1a is positioned so as to be in direct contact with the hard strand 1b.
　柔らかい素線１ａと硬い素線１ｂがいずれか１箇所以上で隣接する配列パターンとしては、図４（ａ）以外にも、例えば、図４（ｂ）～（ｄ）に示すようなパターンが挙げられる。 Examples of the arrangement pattern in which the soft wire 1a and the hard wire 1b are adjacent to each other at one or more locations include patterns shown in FIGS. 4 (b) to 4 (d) in addition to FIG. 4 (a). It is done.
　図１～図３に示すように、電線付き圧着端子１０（以下、圧着端子）は、銅合金製であり、所定形状に裁断したプレートを折り曲げ加工することによって形成されている。圧着端子１０は、相手端子接続部１１と電線接続部１５を有する。電線接続部１５は、芯線圧着部１６と外皮圧着部１７を有する。芯線圧着部１６は、基底部１６ａとこの基底部１６ａの両側から延設された一対の加締め片部１６ｂを有する。芯線圧着部１６の基底部１６ａと一対の加締め片部１６ｂの内面には、多数の丸形状の溝１８（セレーション）が形成されている。外皮圧着部１７は、基底部１７ａとこの基底部１７ａの両側から延設された一対の加締め片部１７ｂを有する。 As shown in FIGS. 1 to 3, the crimp terminal 10 with electric wire (hereinafter referred to as a crimp terminal) is made of a copper alloy and is formed by bending a plate cut into a predetermined shape. The crimp terminal 10 has a mating terminal connection portion 11 and a wire connection portion 15. The electric wire connecting portion 15 includes a core wire crimping portion 16 and an outer skin crimping portion 17. The core wire crimping part 16 has a base part 16a and a pair of caulking piece parts 16b extending from both sides of the base part 16a. A large number of round grooves 18 (serrations) are formed on the inner surface of the base portion 16a of the core wire crimping portion 16 and the pair of caulking piece portions 16b. The outer skin crimping part 17 has a base part 17a and a pair of caulking piece parts 17b extending from both sides of the base part 17a.
　圧着端子１０は、芯線圧着部１６によって露出された芯線１を加締め圧着し、外皮圧着部１７によって絶縁外皮２を加締め圧着している。 The crimp terminal 10 crimps and crimps the core wire 1 exposed by the core wire crimping portion 16, and crimps and crimps the insulating sheath 2 by the outer skin crimping portion 17.
　圧着端子１０は、図５に示す加締め治具２０によって圧着される。加締め治具２０は、その加締め先端側に最終的な加締め外周形状の加締め溝２１を有する。図６に示すように、加締め治具２０によって一対の芯線加締め片部１６ｂを上方から押圧すると、加締め溝２１に沿って一対の加締め片部１６ｂが塑性変形される。 The crimp terminal 10 is crimped by a crimping jig 20 shown in FIG. The caulking jig 20 has a caulking groove 21 having a final caulking outer peripheral shape on the caulking tip side. As shown in FIG. 6, when the pair of core wire crimping pieces 16 b are pressed from above by the crimping jig 20, the pair of crimping pieces 16 b are plastically deformed along the crimping grooves 21.
　この芯線加締め片部１６ｂの加締め過程では、電線Ｗの芯線１が圧着力を受ける。すると、図７に示すように、芯線１の各素線１ａ，１ｂが伸びて新生面が発生する。柔らかい素線１ａと硬い素線１ｂとに同じ圧着力がかかったとき、柔らかい素線１ａは硬い素線１ｂよりも柔らかいため、柔らかい素線１ａは硬い素線１ｂよりも伸び量は大きくなる。このように柔らかい素線１ａと硬い素線１ｂでは伸び量が異なることにより、新生面が発生した素線１ａ，１ｂ間が摺動し、摺動した素線１ａ，１ｂ間で凝着が発生する。なお凝着は、素線１ａ，１ｂの間だけでなく、素線１ａ同士、素線１ｂ同士の間でも発生する。素線同士が凝着することで、素線間の導通を確実に確保でき、回路全体の抵抗を低減できる。 In the caulking process of the core wire caulking piece 16b, the core wire 1 of the electric wire W receives a crimping force. Then, as shown in FIG. 7, the strands 1a and 1b of the core wire 1 extend to generate a new surface. When the same crimping force is applied to the soft strand 1a and the hard strand 1b, since the soft strand 1a is softer than the hard strand 1b, the soft strand 1a has a larger amount of elongation than the hard strand 1b. As described above, the soft wires 1a and the hard wires 1b have different elongation amounts, so that the wires 1a and 1b on which the new surface is generated slide, and adhesion occurs between the slide wires 1a and 1b. . Adhesion occurs not only between the strands 1a and 1b but also between the strands 1a and 1b. By adhering the strands, conduction between the strands can be reliably ensured, and the resistance of the entire circuit can be reduced.
　このように電線Ｗの芯線１の構成を変更することによって、素線１ａ，１ｂ間の導通を確保できるため、単線化等に較べてほとんどコストアップなしに圧着箇所の電気抵抗を低減できる。 Thus, by changing the configuration of the core wire 1 of the electric wire W, it is possible to secure the conduction between the strands 1a and 1b, so that the electrical resistance at the crimping portion can be reduced with almost no cost increase compared to the single wire.
　芯線圧着部１６の内面には、溝１８（セレーション）が設けられている。芯線１の素線１ａが溝１８に入り込むよう変形、つまり、伸び変形するため、新生面が発生し、圧縮力を受けることなどによって凝着が発生する。従って、溝１８（セレーション）によっても素線１ａ間の導通抵抗の低減が図られる。 A groove 18 (serration) is provided on the inner surface of the core wire crimping portion 16. Since the wire 1a of the core wire 1 is deformed so as to enter the groove 18, that is, is deformed by extension, a new surface is generated, and adhesion occurs due to receiving a compressive force. Therefore, the conduction resistance between the strands 1a can also be reduced by the groove 18 (serration).
　芯線１は、アルミ製である。アルミ製の素線１ａ，１ｂは、銅合金製に較べて表面にできる酸化被膜が硬い。そのため、アルミ製の芯線１は、素線１ａ，１ｂ間の導通抵抗による電気抵抗の増加が問題であったが、本発明では、素線１ａ，１ｂ間が摺動することで、圧着時において容易に、素線１ａ，１ｂの表面の酸化被膜を除去することができる。素線１ａ，１ｂの伸びと素線１ａ，１ｂ間の摺動により、効果的に素線の表面に新生面を発生させることができ、素線同士の凝着の発生を促進することができる。そのため素線間の導通抵抗を低減することができる。 Core wire 1 is made of aluminum. The aluminum wires 1a and 1b have a harder oxide film formed on the surface than those made of copper alloy. Therefore, the aluminum core wire 1 has a problem of an increase in electrical resistance due to the conduction resistance between the strands 1a and 1b. However, in the present invention, when the strands 1a and 1b slide, The oxide film on the surface of the strands 1a and 1b can be easily removed. By the elongation of the strands 1a and 1b and the sliding between the strands 1a and 1b, a new surface can be effectively generated on the surface of the strands, and the occurrence of adhesion between the strands can be promoted. Therefore, the conduction resistance between the strands can be reduced.
　芯線１は、互いに硬度が異なる素線１ａ，１ｂ同士が１箇所以上で隣接する配列パターンである。従って、圧着時において、任意の柔らかい素線１ａと硬い素線１ｂが１箇所以上で摺動するため、全ての各素線１ａ，１ｂについて確実に導通を確保できる。 The core wire 1 is an array pattern in which the strands 1a and 1b having different hardnesses are adjacent to each other at one or more locations. Therefore, since any soft strand 1a and hard strand 1b slide at one or more places during crimping, conduction can be reliably ensured for all the strands 1a and 1b.
　この実施形態では、芯線１がアルミ製であるが、本発明はアルミ製以外の芯線１（例えば銅合金製）であっても適用できる。 In this embodiment, the core wire 1 is made of aluminum, but the present invention can also be applied to a core wire 1 other than aluminum (for example, copper alloy).
　この実施形態では、芯線１は、互いに硬度が異なる二種類の素線１ａ，１ｂから形成されているが、互いに硬度が異なる三種類以上の素線から形成されても良い。互いに硬度が異なる素線１ａ，１ｂは、例えば調質や組成の相違によって形成可能である。 In this embodiment, the core wire 1 is formed of two types of strands 1a and 1b having different hardnesses, but may be formed of three or more types of strands having different hardnesses. The strands 1a and 1b having different hardnesses can be formed by different tempering or composition, for example.
　この実施形態では、芯線圧着部１６の内面に設けるセレーションは、溝１８であるが、突部でも良く、又、溝と突部の両方であっても良い。 In this embodiment, the serration provided on the inner surface of the core wire crimping portion 16 is the groove 18, but it may be a protrusion, or may be both a groove and a protrusion.
　以上、本発明の実施形態について説明したが、これらの実施形態は本発明の理解を容易にするために記載された単なる例示に過ぎず、本発明は当該実施形態に限定されるものではない。本発明の技術的範囲は、上記実施形態で開示した具体的な技術事項に限らず、そこから容易に導きうる様々な変形、変更、代替技術なども含むものである。 As mentioned above, although embodiment of this invention was described, these embodiment is only the mere illustration described in order to make an understanding of this invention easy, and this invention is not limited to the said embodiment. The technical scope of the present invention is not limited to the specific technical matters disclosed in the above embodiment, but includes various modifications, changes, alternative techniques, and the like that can be easily derived therefrom.
　本出願は、２０１３年１０月１１日に出願された日本国特許願第２０１３－２１３５０７号に基づく優先権を主張しており、この出願の全内容が参照により本明細書に組み込まれる。 This application claims priority based on Japanese Patent Application No. 2013-213507 filed on October 11, 2013, the entire contents of which are incorporated herein by reference.
　本発明によれば、圧着端子による圧着過程で芯線が圧着力を受けると、芯線の各素線が伸びて新生面が発生すると共に、素線によって互いに硬度が異なることに起因して伸び量が異なるために、新生面が発生した素線間が摺動して凝着が発生し、素線間の導通を確実に確保でき、回路全体の抵抗を低減できる。 According to the present invention, when the core wire receives a crimping force in the crimping process by the crimp terminal, each strand of the core wire is stretched to generate a new surface, and the elongation amount is different due to the different hardness between the strands. For this reason, the strands on which the new surface is generated slide and adhere to each other, so that conduction between the strands can be reliably ensured and the resistance of the entire circuit can be reduced.
　Ｗ　電線（電線圧着用電線）
　１　芯線
　１ａ　柔らかい素線
　１ｂ　硬い素線
　２　絶縁外皮
　１０　圧着端子（電線付き圧着端子）
 
  W electric wire (electric wire for electric wire crimping)
1 Core wire 1a Soft wire 1b Hard wire 2 Insulating sheath 10 Crimp terminal (crimp terminal with electric wire)

Claims (5)

  1. 　複数の素線からなる芯線と前記芯線を覆う絶縁外皮とを有し、前記絶縁外皮が除去された前記芯線が圧着端子に圧着される圧着端子用電線であって、
    　前記芯線は、互いに硬度が異なる複数種類の素線から形成されていることを特徴とする圧着端子用電線。     A wire for a crimp terminal having a core wire composed of a plurality of strands and an insulation sheath covering the core wire, wherein the core wire from which the insulation sheath has been removed is crimped to a crimp terminal,
    The crimping terminal electric wire, wherein the core wire is formed from a plurality of types of strands having different hardnesses.
  2. 　請求項１に記載の圧着端子用電線であって、
    　前記芯線は、アルミニウム製又はアルミニウム合金製であり、互いに硬度が異なる二種類の前記素線から形成されていることを特徴とする圧着端子用電線。     The electric wire for crimp terminal according to claim 1,
    The core wire is made of aluminum or an aluminum alloy, and is formed from two types of the wires having different hardnesses.
  3. 　請求項１又は請求項２に記載の圧着端子用電線であって、
    　前記芯線は、互いに硬度が異なる素線同士が１箇所以上で隣接する配列パターンであることを特徴とする圧着端子用電線。     It is the electric wire for crimping terminals according to claim 1 or 2,
    The core wire is an array pattern in which strands having different hardnesses are adjacent to each other at one or more locations.
  4. 　複数の素線からなる芯線と前記芯線を覆う絶縁外皮とを有し、前記絶縁外皮が除去された前記芯線を圧着する電線付き圧着端子であって、
    　互いに硬度が異なる複数種類の素線からなる前記芯線を圧着していることを特徴とする電線付き圧着端子。     A crimp terminal with an electric wire having a core wire composed of a plurality of strands and an insulation sheath covering the core wire, and crimping the core wire from which the insulation sheath has been removed,
    A crimp terminal with an electric wire, wherein the core wire composed of a plurality of types of wires having different hardnesses is crimped.
  5. 　請求項４に記載の電線付き圧着端子であって、
    　アルミニウム製又はアルミニウム合金製の、互いに硬度が異なる二種類の前記素線からなる前記芯線を圧着していることを特徴とする電線付き圧着端子。
     
          It is a crimp terminal with an electric wire according to claim 4,
    A crimp terminal with an electric wire, wherein the core wire made of two types of the strands made of aluminum or aluminum alloy and having different hardnesses is crimped.

PCT/JP2014/076815 2013-10-11 2014-10-07 Electric wire for crimp terminals, and crimp terminal with electric wire WO2015053267A1 (en)

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JP2013213507A JP2015076354A (en) 2013-10-11 2013-10-11 Wire for crimped terminal and wire-provided crimped terminal
JP2013-213507 2013-10-11

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004207079A (en) * 2002-12-25 2004-07-22 Sumitomo Electric Ind Ltd Conductor for automobile
JP2005093300A (en) * 2003-09-18 2005-04-07 Sumitomo Wiring Syst Ltd Electric wire for automobile
JP2005093301A (en) * 2003-09-18 2005-04-07 Auto Network Gijutsu Kenkyusho:Kk Electric wire for automobile

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004207079A (en) * 2002-12-25 2004-07-22 Sumitomo Electric Ind Ltd Conductor for automobile
JP2005093300A (en) * 2003-09-18 2005-04-07 Sumitomo Wiring Syst Ltd Electric wire for automobile
JP2005093301A (en) * 2003-09-18 2005-04-07 Auto Network Gijutsu Kenkyusho:Kk Electric wire for automobile

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