JP2019207810A - Wire with crimp contact - Google Patents
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- JP2019207810A JP2019207810A JP2018103039A JP2018103039A JP2019207810A JP 2019207810 A JP2019207810 A JP 2019207810A JP 2018103039 A JP2018103039 A JP 2018103039A JP 2018103039 A JP2018103039 A JP 2018103039A JP 2019207810 A JP2019207810 A JP 2019207810A
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- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 263
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 263
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 30
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 239000004020 conductor Substances 0.000 claims description 272
- 238000002788 crimping Methods 0.000 claims description 54
- 230000000630 rising effect Effects 0.000 abstract description 16
- 239000004411 aluminium Substances 0.000 abstract 3
- 238000012360 testing method Methods 0.000 description 19
- 239000000463 material Substances 0.000 description 16
- 238000011156 evaluation Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 239000010949 copper Substances 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- -1 aluminum-manganese Chemical compound 0.000 description 7
- 229910000861 Mg alloy Inorganic materials 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 3
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- 229910000914 Mn alloy Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
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- 229910052759 nickel Inorganic materials 0.000 description 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- OWXLRKWPEIAGAT-UHFFFAOYSA-N [Mg].[Cu] Chemical compound [Mg].[Cu] OWXLRKWPEIAGAT-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
本発明は、アルミニウム線及び／またはアルミニウム合金線を含む複数の導体線が束ねられた導体部でも、導体部内部に配置された導体線間における電気抵抗を低減できる端子付き電線に関するものである。 The present invention relates to a terminal-attached electric wire that can reduce electrical resistance between conductor wires arranged inside a conductor portion even in a conductor portion in which a plurality of conductor wires including an aluminum wire and / or an aluminum alloy wire are bundled.
アルミニウムやアルミニウム合金は銅よりも電気伝導度が低下するものの、軽量化の点から、銅電線に代えて、アルミニウム電線やアルミニウム合金電線が使用されることがある。アルミニウム電線やアルミニウム合金電線の表面には、経年劣化により、電気抵抗が大きい酸化被膜が形成されるので、アルミニウム電線やアルミニウム合金電線の電気抵抗が上昇して、通電の際に電線が発熱して、端子や電線の温度が上昇してしまうことがあった。特に、アルミニウム電線やアルミニウム合金電線からなる導体線が異種金属である銅端子に接続されると、銅とアルミニウムの熱膨張差から端子と導体線間で剥離が生じ、端子と導体線間の電気的接続性が低下してしまうことがあった。また、使用条件によっては、銅とアルミニウムとの間で電解腐食に至る可能性もあった。 Although aluminum and aluminum alloys have lower electrical conductivity than copper, aluminum wires and aluminum alloy wires are sometimes used instead of copper wires from the viewpoint of weight reduction. Since an oxide film with a large electrical resistance is formed on the surface of an aluminum wire or aluminum alloy wire due to deterioration over time, the electrical resistance of the aluminum wire or aluminum alloy wire increases, and the wire generates heat when energized. In some cases, the temperature of the terminals and electric wires would rise. In particular, when a conductor wire made of an aluminum wire or an aluminum alloy wire is connected to a copper terminal, which is a dissimilar metal, peeling occurs between the terminal and the conductor wire due to a difference in thermal expansion between copper and aluminum, and the electrical connection between the terminal and the conductor wire Connectivity may be reduced. Further, depending on the use conditions, there is a possibility that electrolytic corrosion occurs between copper and aluminum.
そこで、アルミニウム電線やアルミニウム合金電線からなる導体線を使用する場合には、銅端子に代えて、同種金属、すなわち、アルミニウム端子やアルミニウム合金端子が使用されることも行われている。また、アルミニウム端子やアルミニウム合金端子は、銅端子と比較して軽量なので、電線設置の作業性にも優れている。 Then, when using the conductor wire which consists of an aluminum electric wire and an aluminum alloy electric wire, it replaces with a copper terminal and the same kind metal, ie, an aluminum terminal and an aluminum alloy terminal, is also used. In addition, since aluminum terminals and aluminum alloy terminals are lighter than copper terminals, they are excellent in workability for installing electric wires.
しかし、銅端子に代えて、アルミニウム端子やアルミニウム合金端子を使用しても、上記の通り、アルミニウム電線やアルミニウム合金電線の表面には、電気抵抗の大きな酸化被膜が形成されてしまうので、アルミニウム電線やアルミニウム合金電線の電気抵抗の上昇を防止することが求められている。 However, even if an aluminum terminal or an aluminum alloy terminal is used in place of the copper terminal, as described above, an oxide film having a large electric resistance is formed on the surface of the aluminum electric wire or the aluminum alloy electric wire. In addition, it is required to prevent an increase in electrical resistance of aluminum alloy wires.
そこで、アルミニウム端子のうち、圧着しようとする部分の内面に、圧着によってアルミニウム導体の表面に食い付きを起こす凹部または凸部を形成したアルミニウム端子を使用することが提案されている（特許文献１）。特許文献１は、圧着しようとする部分の内面に凹部または凸部を形成したアルミニウム端子を使用することにより、アルミニウム導体の表面の酸化被膜を破壊しながらアルミニウム導体をアルミニウム端子に圧着して、アルミニウム導体とアルミニウム端子間の電気抵抗の上昇を防止するものである。 Then, it is proposed to use the aluminum terminal which formed the recessed part or convex part which raise | generates the surface of an aluminum conductor by crimping | bonding to the inner surface of the part to be crimped among aluminum terminals (patent document 1). . Patent Document 1 uses an aluminum terminal in which a concave portion or a convex portion is formed on the inner surface of a portion to be crimped, thereby crimping the aluminum conductor to the aluminum terminal while destroying the oxide film on the surface of the aluminum conductor. This prevents an increase in electrical resistance between the conductor and the aluminum terminal.
しかし、特許文献１では、端子内面の凹部または凸部でアルミニウム導体の表面の酸化被膜を破壊するので、端子と接していないアルミニウム導体、例えば、複数のアルミニウム導体が束ねられた電線の内部に配置されたアルミニウム導体では、表面の酸化被膜を破壊することが難しい。従って、特許文献１では、電線の内部に配置されたアルミニウム導体間においては、電気抵抗の上昇を防止して、端子の昇温を抑制することが難しいという問題があった。 However, in Patent Document 1, since the oxide film on the surface of the aluminum conductor is destroyed by the concave portion or the convex portion on the inner surface of the terminal, the aluminum conductor that is not in contact with the terminal, for example, an electric wire in which a plurality of aluminum conductors are bundled is arranged. With the aluminum conductor made, it is difficult to destroy the oxide film on the surface. Therefore, in patent document 1, between the aluminum conductors arrange | positioned inside an electric wire, there existed a problem that it was difficult to prevent a raise of an electrical resistance and to suppress the temperature rise of a terminal.
上記事情に鑑み、本発明は、導体線及び端子にアルミニウムやアルミニウム合金を使用し、また、複数の導体線を備えた電線でも、電線の内部に配置された導体線間における電気抵抗の上昇を防止して、端子の昇温を抑制できる端子付き電線を提供することを目的とする。 In view of the above circumstances, the present invention uses aluminum or an aluminum alloy for the conductor wire and the terminal, and also increases the electric resistance between the conductor wires arranged inside the wire even in the case of an electric wire provided with a plurality of conductor wires. It aims at providing the electric wire with a terminal which can prevent and control the temperature rise of a terminal.
本発明の構成の要旨は、以下の通りである。
［１］アルミニウム線及び／またはアルミニウム合金線を含む複数の導体線に、アルミニウムまたはアルミニウム合金の端子が圧着された端子付き電線であって、
前記複数の導体線と前記端子との圧着部において、前記複数の導体線のうち、前記端子と接していない導体線の周面に介在物が存在する端子付き電線。
［２］前記介在物の平均直径が、１μｍ以上５００μｍ以下である［１］に記載の端子付き電線。
［３］前記介在物が、Ｓｉ及び／またはＺｎを含む［１］または［２］に記載の端子付き電線。
［４］前記複数の導体線が、撚り線である［１］乃至［３］のいずれか１つに記載の端子付き電線。
［５］前記端子と接していない導体線の長手方向に対して直交方向の断面において、少なくとも１つの導体線が、周方向の長さ１ｍｍあたり、前記介在物を１個以上有する［１］乃至［４］のいずれか１つに記載の端子付き電線。
［６］直径が１ｍｍ以上３ｍｍ以下の前記導体線が７本以上１００本以下束ねられて複数の導体線が形成されている［１］乃至［５］のいずれか１つに記載の端子付き電線。
［７］前記複数の導体線の非圧着部における、該複数の導体線の長手方向に対して直交方向の断面積（Ａ１）に対する、前記複数の導体線の非圧着部における、該複数の導体線の長手方向に対して直交方向の断面積（Ａ１）から前記複数の導体線の前記圧着部における該複数の導体線の長手方向に対して直交方向の断面積（Ａ２）を引いた値（Ａ１−Ａ２）の割合（Ｒ）（Ｒ（％）＝１００×（Ａ１−Ａ２）／（Ａ１））のうち、もっとも大きいＲが、３０％以上８０％以下である減面部位を、前記圧着部が有する［１］乃至［６］のいずれか１つに記載の端子付き電線。
［８］前記複数の導体線の長手方向におけるＲが３０％以上８０％以下である減面部位の長さが、前記非圧着部における前記複数の導体線の直径以上である［７］に記載の端子付き電線。
［９］前記端子表面の少なくとも一部領域が、平均厚さ０．１μｍ以上のＳｎを含む膜で被覆されている［１］乃至［８］のいずれか１つに記載の端子付き電線。
The gist of the configuration of the present invention is as follows.
[1] A terminal-attached electric wire in which a terminal of aluminum or aluminum alloy is crimped to a plurality of conductor wires including an aluminum wire and / or an aluminum alloy wire,
The electric wire with a terminal in which the inclusion exists in the peripheral surface of the conductor wire which is not in contact with the terminal among the plurality of conductor wires in the crimping part of the plurality of conductor wires and the terminal.
[2] The electric wire with terminal according to [1], wherein an average diameter of the inclusion is 1 μm or more and 500 μm or less.
[3] The electric wire with terminal according to [1] or [2], wherein the inclusion includes Si and / or Zn.
[4] The electric wire with terminal according to any one of [1] to [3], wherein the plurality of conductor wires are stranded wires.
[5] In a cross section perpendicular to the longitudinal direction of the conductor wire not in contact with the terminal, at least one conductor wire has one or more inclusions per circumferential length of 1 mm. The electric wire with a terminal according to any one of [4].
[6] A terminal-attached electric wire according to any one of [1] to [5], wherein a plurality of conductor wires are formed by bundling 7 to 100 conductor wires having a diameter of 1 mm to 3 mm. .
[7] The plurality of conductors in the non-crimped portions of the plurality of conductor wires with respect to the cross-sectional area (A1) perpendicular to the longitudinal direction of the plurality of conductor wires in the non-crimped portions of the plurality of conductor wires. A value obtained by subtracting the cross-sectional area (A2) perpendicular to the longitudinal direction of the plurality of conductor wires in the crimping portion of the plurality of conductor wires from the cross-sectional area (A1) perpendicular to the longitudinal direction of the lines ( Of the ratio (R) (R (%) = 100 × (A1-A2) / (A1)) of A1-A2), the largest R is 30% or more and 80% or less. The terminal-attached electric wire according to any one of [1] to [6].
[8] The length of the reduced surface area where R in the longitudinal direction of the plurality of conductor wires is 30% or more and 80% or less is greater than or equal to the diameter of the plurality of conductor wires in the non-crimped portion. Electric wire with terminal.
[9] The electric wire with a terminal according to any one of [1] to [8], wherein at least a partial region of the terminal surface is covered with a film containing Sn having an average thickness of 0.1 μm or more.
本発明の端子付き電線の態様によれば、複数のアルミニウム線及び／またはアルミニウム合金線を含む導体線とアルミニウムまたはアルミニウム合金の端子との圧着部において、端子と接していない導体線の周面に介在物が存在することにより、介在物によって端子と接していない導体線の表面に形成された酸化被膜を破壊できる。従って、端子と接していない導体線間の導通性が維持されるので、端子と接していない導体線間であっても電気抵抗の上昇を防止できる。このように、端子と接していない導体線間における電気抵抗の上昇を防止できるので、端子の昇温を抑制できる。 According to the embodiment of the electric wire with a terminal of the present invention, in the crimping portion between the conductor wire including a plurality of aluminum wires and / or an aluminum alloy wire and the aluminum or aluminum alloy terminal, on the peripheral surface of the conductor wire not in contact with the terminal Due to the presence of the inclusion, the oxide film formed on the surface of the conductor wire not in contact with the terminal by the inclusion can be broken. Therefore, since the electrical conductivity between the conductor wires that are not in contact with the terminals is maintained, an increase in electrical resistance can be prevented even between the conductor wires that are not in contact with the terminals. Thus, since the increase in electrical resistance between the conductor wires not in contact with the terminal can be prevented, the temperature rise of the terminal can be suppressed.
本発明の端子付き電線の態様によれば、介在物の平均直径が、１μｍ以上５００μｍ以下であることにより、酸化被膜を確実に破壊しつつ、端子と接していない導体線間の導通性を確実に維持することができる。 According to the embodiment of the electric wire with a terminal of the present invention, the inclusions have an average diameter of 1 μm or more and 500 μm or less, so that the conductivity between the conductor wires that are not in contact with the terminal is ensured while reliably destroying the oxide film. Can be maintained.
本発明の端子付き電線の態様によれば、介在物がＳｉを含むことにより、酸化被膜を確実に破壊して導体線間における電気抵抗の上昇を確実に防止でき、また、介在物がＺｎを含むことにより、酸化被膜を破壊しつつ導体線間の電気的接続が円滑化されて、電気抵抗の上昇を確実に防止できる。 According to the embodiment of the electric wire with a terminal of the present invention, the inclusion contains Si, so that the oxide film can be reliably broken to prevent an increase in electric resistance between the conductor wires, and the inclusion contains Zn. By including, the electrical connection between the conductor wires is smoothed while destroying the oxide film, and the increase in electrical resistance can be reliably prevented.
本発明の端子付き電線の態様によれば、複数の導体線が撚り線であることにより、電線の曲げ加工性等が向上して、長手方向の形状の自由度が向上する。 According to the aspect of the electric wire with terminal of the present invention, the plurality of conductor wires are stranded wires, so that the bendability of the electric wire is improved and the flexibility of the shape in the longitudinal direction is improved.
本発明の端子付き電線の態様によれば、導体線の周方向の長さ１ｍｍあたり介在物が１個以上存在することにより、酸化被膜を確実に破壊して、端子と接していない導体線間の導通性を確実に維持することができる。 According to the embodiment of the electric wire with terminal of the present invention, the presence of one or more inclusions per 1 mm in the circumferential direction of the conductor wire ensures destruction of the oxide film, and between the conductor wires not in contact with the terminal The continuity of can be reliably maintained.
本発明の端子付き電線の態様によれば、直径１ｍｍ以上３ｍｍ以下の導体線であることにより、内部の導体線間の電気抵抗の上昇を防止しつつ、電線の曲げ加工性等を得ることできる。また、直径１ｍｍ以上３ｍｍ以下の導体線が７本以上１００本以下束ねられていることにより、電線の導体部として所定の直径を確保することができる。 According to the embodiment of the electric wire with a terminal of the present invention, it is a conductor wire having a diameter of 1 mm or more and 3 mm or less, so that it is possible to obtain a bending workability of the electric wire while preventing an increase in electric resistance between the internal conductor wires. . Moreover, a predetermined diameter can be ensured as a conductor part of an electric wire by bundling 7 or more and 100 or less conductor wires having a diameter of 1 mm or more and 3 mm or less.
本発明の端子付き電線の態様によれば、複数の導体線の非圧着部における、複数の導体線の長手方向に対して直交方向の断面積（Ａ１）に対する、複数の導体線の非圧着部における、複数の導体線の長手方向に対して直交方向の断面積（Ａ１）から複数の導体線の圧着部における断面積（Ａ２）を引いた値（Ａ１−Ａ２）の割合（Ｒ）のうちもっとも大きいＲが３０％以上８０％以下である減面部位を、圧着部が有することにより、圧着部において、酸化被膜を確実に破壊しつつ、導体線の引っ張り破断を確実に防止することができる。 According to the embodiment of the electric wire with terminal of the present invention, the non-crimped portions of the plurality of conductor wires with respect to the cross-sectional area (A1) perpendicular to the longitudinal direction of the plurality of conductor wires in the non-crimped portions of the plurality of conductor wires. In the ratio (R) of the value (A1-A2) obtained by subtracting the cross-sectional area (A2) at the crimping portion of the plurality of conductor wires from the cross-sectional area (A1) perpendicular to the longitudinal direction of the plurality of conductor wires Since the crimping part has the surface-reduced portion having the largest R of 30% or more and 80% or less, the conductor wire can be reliably prevented from being pulled and broken while the oxide film is reliably destroyed in the crimping part. .
本発明の端子付き電線の態様によれば、導体線の長手方向におけるＲが３０％以上８０％以下である減面部位の長さが、非圧着部における複数の導体線の直径以上であることにより、導体線と端子間の電気的接続性が向上して、導体線と端子間の電気抵抗による端子の昇温を確実に抑制できる。 According to the aspect of the electric wire with a terminal of the present invention, the length of the reduced surface area where R in the longitudinal direction of the conductor wire is 30% or more and 80% or less is equal to or more than the diameter of the plurality of conductor wires in the non-crimped portion. Thereby, the electrical connectivity between the conductor wire and the terminal is improved, and the temperature rise of the terminal due to the electrical resistance between the conductor wire and the terminal can be reliably suppressed.
本発明の端子付き電線の態様によれば、端子表面が平均厚さ０．１μｍ以上のＳｎを含む膜で被覆されていることにより、端子表面の腐食を防止しつつ、導体線と端子間の電気的接続性を向上させることができる。 According to the aspect of the electric wire with a terminal of the present invention, the terminal surface is coated with a film containing Sn having an average thickness of 0.1 μm or more, thereby preventing corrosion of the terminal surface and between the conductor wire and the terminal. Electrical connectivity can be improved.
以下に、本発明の実施形態に係る端子付き電線について、図面を用いながら説明する。図１は、本発明の実施形態例に係る端子付き電線の概要を説明する斜視図である。図２は、本発明の実施形態例に係る端子付き電線の概要を説明する平面図である。図３は、本発明の実施形態例に係る端子付き電線に従う圧着部の断面写真である。図４は、本発明の実施形態例に係る端子付き電線の圧着部の断面である。図５は、圧着部におけるアルミニウム系導体線の周方向の長さの測定方法を示す説明図である。 Below, the electric wire with a terminal concerning the embodiment of the present invention is explained using a drawing. FIG. 1 is a perspective view for explaining an outline of a terminal-attached electric wire according to an embodiment of the present invention. FIG. 2 is a plan view for explaining the outline of the electric wire with terminal according to the embodiment of the present invention. FIG. 3 is a cross-sectional photograph of a crimping part according to a terminal-attached electric wire according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of a crimp portion of a terminal-attached electric wire according to an embodiment of the present invention. FIG. 5 is an explanatory diagram showing a method for measuring the length in the circumferential direction of the aluminum-based conductor wire at the crimping portion.
図１、２に示すように、本発明の実施形態に係る端子付き電線１は、アルミニウム線及び／またはアルミニウム合金線であるアルミニウム系導体線２１に、アルミニウムまたはアルミニウム合金であるアルミニウム系端子１０が圧着されたものである。アルミニウム系導体線２１が複数束ねられてアルミニウム系導体部２０が形成されている。アルミニウム系導体部２０は、絶縁被覆３０で被覆されてアルミニウム系導体部被覆電線３１となっている。 As shown in FIGS. 1 and 2, the electric wire with terminal 1 according to the embodiment of the present invention includes an aluminum-based conductor wire 21 that is an aluminum wire and / or an aluminum alloy wire, and an aluminum-based terminal 10 that is aluminum or an aluminum alloy. It has been crimped. A plurality of aluminum conductor wires 21 are bundled to form an aluminum conductor portion 20. The aluminum-based conductor portion 20 is covered with an insulating coating 30 to form an aluminum-based conductor portion covered electric wire 31.
アルミニウム系端子１０は、アルミニウム系導体部２０の一方端が、圧着されて固定される導体圧着部位１１と、相手接続先（図示せず）との接続部分となる相手接続部位１２とを有している。相手接続部位１２は、平板状の部位であり、その中央部に円形状の貫通孔１３が形成されている。貫通孔１３にボルト等の固定部材が挿通されて相手接続先に固定される。 The aluminum-based terminal 10 has a conductor crimping portion 11 where one end of the aluminum-based conductor portion 20 is crimped and fixed, and a mating connection portion 12 that becomes a connection portion with a mating connection destination (not shown). ing. The mating connection part 12 is a flat part, and a circular through hole 13 is formed at the center thereof. A fixing member such as a bolt is inserted into the through hole 13 and fixed to the counterpart connection destination.
アルミニウム系導体部被覆電線３１の一方端では、絶縁被覆３０が剥がされてアルミニウム系導体部２０が露出しており、露出したアルミニウム系導体部２０が、導体圧着部位１１に挿入された状態で圧着されている。圧着前の導体圧着部位１１は、筒状であり、圧着されるアルミニウム系導体部２０の挿入側は開放され、圧着されるアルミニウム系導体部２０の先端側（すなわち、相手接続部位１２側）は、閉塞面で閉塞された状態となっている。筒状の導体圧着部１１に露出したアルミニウム系導体部２０を閉塞面に当接するまで差し込んだ後、導体圧着部位１１をかしめ等で所定量潰すことで、アルミニウム系導体部２０が、その外周に沿ってアルミニウム系端子１０に圧着、固定される。 At one end of the aluminum-based conductor covered wire 31, the insulating coating 30 is peeled off to expose the aluminum-based conductor 20, and the exposed aluminum-based conductor 20 is crimped in a state where it is inserted into the conductor crimping portion 11. Has been. The conductor crimping part 11 before crimping is cylindrical, the insertion side of the aluminum conductor part 20 to be crimped is opened, and the tip side of the aluminum conductor part 20 to be crimped (that is, the mating connection part 12 side) is It is in a state of being blocked by the blocking surface. After inserting the aluminum-based conductor 20 exposed on the cylindrical conductor crimping portion 11 until it abuts against the blocking surface, the conductor-crimping portion 11 is crushed by a predetermined amount so that the aluminum-based conductor 20 is placed on the outer periphery thereof. The aluminum terminal 10 is crimped and fixed along.
アルミニウム系端子１０の材料は、純アルミニウムまたはアルミニウム合金であり、アルミニウム合金としては、アルミニウム−マンガン系合金、アルミニウム−マグネシウム系合金、アルミニウム−マグネシウム−ケイ素系合金、アルミニウム−亜鉛−マグネシウム系合金、アルミニウム−銅−マグネシウム系合金等が挙げられる。アルミニウム系導体線２１の材料は、純アルミニウムまたはアルミニウム合金であり、アルミニウム合金としては、アルミニウム系端子１０の材料と同じアルミニウム合金、すなわち、アルミニウム−マンガン系合金、アルミニウム−マグネシウム系合金、アルミニウム−マグネシウム−ケイ素系合金、アルミニウム−亜鉛−マグネシウム系合金、アルミニウム−銅−マグネシウム系合金等が挙げられる。 The material of the aluminum-based terminal 10 is pure aluminum or an aluminum alloy. Examples of the aluminum alloy include an aluminum-manganese alloy, an aluminum-magnesium alloy, an aluminum-magnesium-silicon alloy, an aluminum-zinc-magnesium alloy, and aluminum. -A copper-magnesium alloy etc. are mentioned. The material of the aluminum-based conductor wire 21 is pure aluminum or an aluminum alloy. As the aluminum alloy, the same aluminum alloy as the material of the aluminum-based terminal 10, that is, an aluminum-manganese alloy, an aluminum-magnesium alloy, and aluminum-magnesium. -Silicon-based alloys, aluminum-zinc-magnesium alloys, aluminum-copper-magnesium alloys and the like.
絶縁被覆３０は、絶縁性を有する材料であれば、特に限定されず、例えば、ポリ塩化ビニル、架橋ポリ塩化ビニル、クロロプレンゴム等を主成分とするハロゲン系樹脂、ポリエチレン、架橋ポリエチレン、エチレンプロピレンゴム、ケイ素系ゴム、ポリエステル等を主成分とするハロゲンフリー樹脂等が挙げられる。これらのうち、ポリ塩化ビニル樹脂が好ましい。なお、必要に応じて、上記樹脂材料に、可塑剤や難燃剤等の各種添加剤が配合されていてもよい。 The insulating coating 30 is not particularly limited as long as it is a material having insulating properties. For example, a halogen-based resin mainly composed of polyvinyl chloride, crosslinked polyvinyl chloride, chloroprene rubber, polyethylene, crosslinked polyethylene, ethylene propylene rubber. And halogen-free resins mainly composed of silicon rubber, polyester and the like. Of these, polyvinyl chloride resin is preferred. In addition, various additives, such as a plasticizer and a flame retardant, may be mix | blended with the said resin material as needed.
図３、４に示すように、アルミニウム系端子１０の導体圧着部位１１では、アルミニウム系導体線２１が複数束ねられて形成されたアルミニウム系導体部２０が圧着されて、圧着部２３が形成されている。複数のアルミニウム系導体線２１には、圧着部２３において、アルミニウム系端子１０の導体圧着部位１１の内面に接していない第１のアルミニウム系導体線２１−１と、アルミニウム系端子１０の導体圧着部位１１の内面に接している第２のアルミニウム系導体線２１−２とがある。 As shown in FIGS. 3 and 4, in the conductor crimping portion 11 of the aluminum-based terminal 10, an aluminum-based conductor portion 20 formed by bundling a plurality of aluminum-based conductor wires 21 is crimped to form a crimping portion 23. Yes. The plurality of aluminum conductor wires 21 include a first aluminum conductor wire 21-1 that is not in contact with the inner surface of the conductor crimping portion 11 of the aluminum terminal 10 and a conductor crimping portion of the aluminum terminal 10 in the crimping portion 23. 11 and a second aluminum-based conductor wire 21-2 that is in contact with the inner surface.
このうち、図４に示すように、少なくとも、第１のアルミニウム系導体線２１−１の周面には、複数の介在物４０、４０・・・が存在している。それぞれの介在物４０、４０・・・は、第１のアルミニウム系導体線２１−１の周面に接した状態で存在している。また、それぞれの介在物４０、４０・・・は、所定の第１のアルミニウム系導体線２１−１と該所定の第１のアルミニウム系導体線２１−１に隣接した他の第１のアルミニウム系導体線２１−１との間、所定の第１のアルミニウム系導体線２１−１と該所定の第１のアルミニウム系導体線２１−１に隣接した第２のアルミニウム系導体線２１−２との間に配置されている。すなわち、介在物４０は、相互に隣接する第１のアルミニウム系導体線２１−１間、第１のアルミニウム系導体線２１−１と該所定の第１のアルミニウム系導体線２１−１に隣接した第２のアルミニウム系導体線２１−２との間に配置されている。従って、アルミニウム系導体線２１の間に配置されている介在物４０は、少なくとも２つのアルミニウム系導体線２１の周面と接している。介在物４０は、粒子状の物質である。 Among these, as shown in FIG. 4, there are a plurality of inclusions 40, 40... At least on the peripheral surface of the first aluminum-based conductor wire 21-1. Each inclusion 40, 40... Exists in contact with the peripheral surface of the first aluminum-based conductor wire 21-1. In addition, each of the inclusions 40, 40... Is a predetermined first aluminum-based conductor wire 21-1 and another first aluminum-based wire adjacent to the predetermined first aluminum-based conductor wire 21-1. Between the conductor wire 21-1, a predetermined first aluminum-based conductor wire 21-1 and a second aluminum-based conductor wire 21-2 adjacent to the predetermined first aluminum-based conductor wire 21-1. Arranged between. That is, the inclusions 40 are adjacent to each other between the first aluminum-based conductor wires 21-1 adjacent to each other, and adjacent to the first aluminum-based conductor wire 21-1 and the predetermined first aluminum-based conductor wire 21-1. It arrange | positions between the 2nd aluminum-type conductor wires 21-2. Therefore, the inclusions 40 arranged between the aluminum-based conductor wires 21 are in contact with the peripheral surfaces of at least two aluminum-based conductor wires 21. The inclusion 40 is a particulate material.
なお、図３では、介在物４０は、黒い点状に映っている物質であり、アルミニウム系導体線２１間及びアルミニウム導体線２１とアルミニウム系端子１０間に、散在して配置されている。 In FIG. 3, the inclusions 40 are substances that appear in the form of black dots, and are interspersed between the aluminum conductor wires 21 and between the aluminum conductor wires 21 and the aluminum terminals 10.
導体圧着部位１１の内面と接していない第１のアルミニウム系導体線２１−１の表面に形成された酸化被膜は導電性に劣るところ、この酸化被膜は、介在物４０によって破壊される。従って、導体圧着部位１１の内面と接していない第１のアルミニウム系導体線２１−１間の導通性が維持されるので、導体圧着部位１１の内面と接していない第１のアルミニウム系導体線２１−１間であっても電気抵抗の上昇を防止できる。このように、導体圧着部位１１の内面と接していない第１のアルミニウム系導体線２１−１間における電気抵抗の上昇を防止できるので、アルミニウム系導体部２０全体の電気抵抗の上昇を防止できる。従って、端子付き電線１では、アルミニウム系導体部２０とアルミニウム系端子１０間の導通性に優れるので、アルミニウム系導体部２０の圧着されたアルミニウム系端子１０の昇温を抑制できる。 The oxide film formed on the surface of the first aluminum-based conductor wire 21-1 that is not in contact with the inner surface of the conductor crimping portion 11 is inferior in conductivity, but this oxide film is destroyed by the inclusions 40. Therefore, since the electrical connection between the first aluminum-based conductor wires 21-1 not in contact with the inner surface of the conductor crimping portion 11 is maintained, the first aluminum-based conductor wire 21 not in contact with the inner surface of the conductor crimping portion 11 is maintained. Even if it is between −1, an increase in electrical resistance can be prevented. Thus, since the raise of the electrical resistance between the 1st aluminum-type conductor wires 21-1 which are not in contact with the inner surface of the conductor crimping | compression-bonding site | part 11 can be prevented, the raise of the electrical resistance of the aluminum-type conductor part 20 whole can be prevented. Therefore, in the electric wire 1 with a terminal, since the electrical conductivity between the aluminum-based conductor 20 and the aluminum-based terminal 10 is excellent, the temperature rise of the aluminum-based terminal 10 to which the aluminum-based conductor 20 is crimped can be suppressed.
介在物４０の平均直径は、特に限定されないが、その下限値は、酸化被膜を確実に破壊する点から、１μｍが好ましく、２μｍがより好ましく、５μｍが特に好ましい。一方で、介在物４０の平均直径の上限値は、第１のアルミニウム系導体線２１−１間における導通性を確実に維持する点から、５００μｍが好ましく、２００μｍがより好ましく、１００μｍが特に好ましい。介在物４０の平均直径は、走査型電子顕微鏡（ＳＥＭ）または光学顕微鏡を用いて、圧着部２３の３つの横断面（アルミニウム系導体部被覆電線３１の長手方向（延び方向）に対して直交方向の断面）について、１つの横断面あたり任意に１０個の介在物４０を選定し、選定した合計３０個の各介在物４０の最長直径をそれぞれ測定して、その測定値を平均して求めたものである。 The average diameter of the inclusions 40 is not particularly limited, but the lower limit is preferably 1 μm, more preferably 2 μm, and particularly preferably 5 μm from the viewpoint of reliably destroying the oxide film. On the other hand, the upper limit of the average diameter of the inclusions 40 is preferably 500 μm, more preferably 200 μm, and particularly preferably 100 μm from the viewpoint of reliably maintaining the electrical conductivity between the first aluminum-based conductor wires 21-1. The average diameter of the inclusions 40 is orthogonal to the three transverse sections of the crimping portion 23 (longitudinal direction (extending direction) of the aluminum-based conductor covered wire 31) using a scanning electron microscope (SEM) or an optical microscope. ), 10 inclusions 40 were arbitrarily selected per cross section, and the longest diameter of each of the selected 30 inclusions 40 was measured, and the measured values were averaged. Is.
介在物４０の材料は、特に限定されないが、ケイ素（Ｓｉ）、亜鉛（Ｚｎ）、マンガン（Ｍｎ）、アルミニウム（Ａｌ）、鉄（Ｆｅ）、銅（Ｃｕ）、ニッケル（Ｎｉ）を主成分として含む材料が挙げられる。このうち、ケイ素（Ｓｉ）及び／または亜鉛（Ｚｎ）を主成分として含む介在物４０が好ましい。Ｓｉは、アルミニウム系の酸化物と比較して硬い特性を有する。従って、介在物４０が主成分としてＳｉを含むことにより、第１のアルミニウム系導体線２１−１の表面に形成された酸化被膜を確実に破壊して、第１のアルミニウム系導体線２１−１間における電気抵抗の上昇を確実に防止できる。Ｓｉを主成分として含む材料として、例えば、Ｓｉ単体、ＳｉＣ等を挙げることができる。 The material of the inclusion 40 is not particularly limited, but includes silicon (Si), zinc (Zn), manganese (Mn), aluminum (Al), iron (Fe), copper (Cu), and nickel (Ni) as main components. The material to include is mentioned. Among these, the inclusion 40 containing silicon (Si) and / or zinc (Zn) as a main component is preferable. Si has hard characteristics as compared with aluminum-based oxides. Therefore, the inclusion 40 contains Si as a main component, so that the oxide film formed on the surface of the first aluminum-based conductor wire 21-1 is surely destroyed, and the first aluminum-based conductor wire 21-1 is destroyed. An increase in electrical resistance can be reliably prevented. Examples of the material containing Si as a main component include Si alone and SiC.
また、Ｚｎは、優れた延性を有し、導電性にも優れる。従って、介在物４０がＺｎを主成分として含むことにより、第１のアルミニウム系導体線２１−１の表面に形成された酸化被膜を破壊しつつ、第１のアルミニウム系導体線２１−１間の電気的接続性が向上して、第１のアルミニウム系導体線２１−１間における電気抵抗の上昇を確実に防止できる。Ｚｎを主成分として含む材料として、例えば、Ｚｎ単体を挙げることができる。 Zn also has excellent ductility and excellent conductivity. Therefore, the inclusion 40 contains Zn as a main component, so that the oxide film formed on the surface of the first aluminum-based conductor wire 21-1 is destroyed, and the first aluminum-based conductor wire 21-1 is broken. Electrical connectivity is improved, and an increase in electrical resistance between the first aluminum-based conductor wires 21-1 can be reliably prevented. An example of a material containing Zn as a main component is Zn alone.
介在物４０の存在頻度は、特に限定されないが、その下限値は、アルミニウム系導体部２０の長手方向に対して直交方向の断面において、少なくとも１本の第１のアルミニウム系導体線２１−１について、その周方向の長さ１ｍｍあたり１．０個が好ましく、前記周方向の長さ１ｍｍあたり１．５個がより好ましい。上記存在頻度の下限値により、第１のアルミニウム系導体線２１−１の酸化被膜を確実に破壊して、導体圧着部位１１の内面と接していない第１のアルミニウム系導体線２１−１間の導通性を確実に維持することができる。一方で、介在物４０の存在頻度の上限値は、導体圧着部位１１の内面と接していない第１のアルミニウム系導体線２１−１間の相互の導通性低下を確実に防止する点から、前記周方向の長さ１ｍｍあたり５０個が好ましく、２０個がより好ましく、１０個が特に好ましい。 The presence frequency of the inclusion 40 is not particularly limited, but the lower limit value is at least one first aluminum-based conductor wire 21-1 in a cross section perpendicular to the longitudinal direction of the aluminum-based conductor portion 20. The number is preferably 1.0 per 1 mm in the circumferential direction, and more preferably 1.5 per 1 mm in the circumferential direction. Due to the lower limit of the existence frequency, the oxide film of the first aluminum-based conductor wire 21-1 is reliably destroyed, and the first aluminum-based conductor wire 21-1 that is not in contact with the inner surface of the conductor crimping portion 11 is used. Conductivity can be reliably maintained. On the other hand, the upper limit value of the presence frequency of the inclusion 40 is from the point of reliably preventing a decrease in mutual conductivity between the first aluminum-based conductor wires 21-1 not in contact with the inner surface of the conductor crimping portion 11. 50 per 1 mm in the circumferential direction is preferable, 20 is more preferable, and 10 is particularly preferable.
上記周方向の長さは、走査型電子顕微鏡（ＳＥＭ）または光学顕微鏡を用いて、圧着部２３の横断面を撮影し、撮影した圧着部２３の画像または写真から、介在物４０の外縁形状を極力近似する方法で測定する。介在物４０の外縁形状を極力近似する方法とは、具体的には、図５に示すように、長さが介在物４０の平均直径の１０％以下の直線Ｌを介在物４０の外縁形状４１に沿って折れ線グラフ状に結ぶ方法である。 The length in the circumferential direction is obtained by photographing the cross section of the crimping part 23 using a scanning electron microscope (SEM) or an optical microscope, and determining the outer edge shape of the inclusion 40 from the photographed image or photograph of the crimping part 23. Measure as close as possible. Specifically, the method of approximating the outer edge shape of the inclusion 40 as much as possible is, as shown in FIG. 5, a straight line L having a length of 10% or less of the average diameter of the inclusion 40 as an outer edge shape 41 of the inclusion 40. It is a method of tying in a line graph shape along.
介在物４０は、所定の第１のアルミニウム系導体線２１−１と該所定の第１のアルミニウム系導体線２１−１に隣接した他の第１のアルミニウム系導体線２１−１及び該所定の第１のアルミニウム系導体線２１−１に隣接した第２のアルミニウム系導体線２１−２との間に配置されているだけではなく、図３、４に示すように、隣接する第２のアルミニウム系導体線２１−２間や第２のアルミニウム系導体線２１−２とアルミニウム系端子１０の導体圧着部位１１との間にも配置されていてもよい。隣接する第２のアルミニウム系導体線２１−２間に介在物４０が配置されていることで、アルミニウム系導体線２１−２間の導通性も向上し、第２のアルミニウム系導体線２１−２と導体圧着部位１１との間に介在物４０が配置されていることで、アルミニウム系端子１０とアルミニウム系導体部２０間の導通性も向上する。 The inclusion 40 includes a predetermined first aluminum-based conductor wire 21-1, the other first aluminum-based conductor wire 21-1 adjacent to the predetermined first aluminum-based conductor wire 21-1, and the predetermined Not only between the second aluminum-based conductor wire 21-2 adjacent to the first aluminum-based conductor wire 21-1, but also as shown in FIGS. It may be arranged between the system conductor wires 21-2 or between the second aluminum system conductor wire 21-2 and the conductor crimping part 11 of the aluminum system terminal 10. Since the inclusion 40 is disposed between the adjacent second aluminum-based conductor wires 21-2, the electrical conductivity between the aluminum-based conductor wires 21-2 is also improved, and the second aluminum-based conductor wire 21-2 is improved. Since the inclusion 40 is arranged between the conductor crimping part 11 and the conductor crimping part 11, the electrical conductivity between the aluminum terminal 10 and the aluminum conductor part 20 is also improved.
図１〜４に示すように、アルミニウム系導体部２０はアルミニウム系端子１０の導体圧着部位１１に圧着されているので、圧着部２３には、アルミニウム系導体部２０の横断面が減面された減面部２４が形成されている。減面部２４におけるアルミニウム系導体部２０の減面の程度は、例えば、アルミニウム系導体部２０の非圧着部における横断面の断面積（Ａ１）に対する、アルミニウム系導体部２０の非圧着部における横断面の断面積（Ａ１）からアルミニウム系導体部２０の圧着部２３における前記横断面の断面積（Ａ２）を引いた値（Ａ１−Ａ２）の割合（Ｒ）（以下、「減面率」ということがある。）で表すことができる。従って、減面率Ｒ（％）＝１００×（Ａ１−Ａ２）／（Ａ１）にて算出できる。減面部２４におけるアルミニウム系導体部２０の減面率は、特に限定されないが、減面部２４のうち、最も減面率の大きい減面部位Ｃの領域における減面率の上限値は、アルミニウム系導体部２０の引っ張り破断を確実に防止する点から、８０％が好ましく、７０％が特に好ましい。一方で、減面部２４のうち、最も減面率の大きい減面部位Ｃにおける減面率の下限値は、酸化被膜を確実に破壊する点から３０％が好ましく、５０％が特に好ましい。 1-4, since the aluminum-type conductor part 20 is crimped | bonded to the conductor crimping | compression-bonding part 11 of the aluminum-type terminal 10, the cross section of the aluminum-type conductor part 20 was reduced in the crimping | compression-bonding part 23. A reduced surface portion 24 is formed. The degree of surface reduction of the aluminum-based conductor portion 20 in the reduced-surface portion 24 is, for example, the cross section of the non-crimped portion of the aluminum-based conductor portion 20 relative to the cross-sectional area (A1) of the cross-section of the non-crimped portion of the aluminum-based conductor portion 20. The ratio (R1) of the value (A1-A2) obtained by subtracting the cross-sectional area (A2) of the transverse section of the crimping part 23 of the aluminum-based conductor part 20 from the cross-sectional area (A1) (hereinafter referred to as “area reduction ratio”) Can be represented by: Therefore, the area reduction ratio R (%) = 100 × (A1−A2) / (A1) can be calculated. The area reduction rate of the aluminum conductor portion 20 in the area reduction portion 24 is not particularly limited, but the upper limit value of the area reduction rate in the area of the area reduction C where the area reduction area is the largest in the area reduction portion 24 is the aluminum conductor. 80% is preferable and 70% is particularly preferable from the viewpoint of reliably preventing the tensile fracture of the portion 20. On the other hand, the lower limit value of the area reduction ratio in the area reduction area C having the largest area reduction ratio in the area reduction area 24 is preferably 30%, and particularly preferably 50%, from the viewpoint of reliably destroying the oxide film.
減面部２４のうち、最も減面率の大きい減面部位Ｃの範囲は、特に限定されないが、図２に示すように、アルミニウム系導体部２０の長手方向における減面部位Ｃの領域の長さＭが、アルミニウム系導体部２０の非圧着部（アルミニウム系導体部２０がアルミニウム系端子１０と接していない部分）におけるアルミニウム系導体部２０の直径以上であることが好ましく、非圧着部におけるアルミニウム系導体部２０の直径の１．５倍以上が特に好ましい。減面部位Ｃの領域の長さＭが上記長さを有することで、アルミニウム系導体部２０と導体圧着部位１１間の電気的接続性が向上して、アルミニウム系導体部２０と導体圧着部位１１間の電気抵抗によるアルミニウム系端子１０の昇温を、確実に抑制できる。 The range of the surface-reduced portion C having the largest surface-reduction ratio among the surface-reduced portions 24 is not particularly limited, but as shown in FIG. 2, the length of the area of the surface-reduced portion C in the longitudinal direction of the aluminum-based conductor portion 20. M is preferably equal to or greater than the diameter of the aluminum-based conductor portion 20 in the non-crimped portion of the aluminum-based conductor portion 20 (the portion where the aluminum-based conductor portion 20 is not in contact with the aluminum-based terminal 10). The diameter of the conductor part 20 is particularly preferably 1.5 times or more. Since the length M of the area of the reduced surface portion C has the above length, the electrical connectivity between the aluminum-based conductor portion 20 and the conductor crimping portion 11 is improved, and the aluminum-based conductor portion 20 and the conductor crimping portion 11 are improved. The temperature rise of the aluminum-based terminal 10 due to the electrical resistance can be reliably suppressed.
端子付き電線１では、アルミニウム系導体部２０は、複数のアルミニウム系導体線２１が撚られた撚り線の形態となっている。アルミニウム系導体部２０が撚り線であることで、アルミニウム系導体部被覆電線３１の曲げ加工性等が向上して、アルミニウム系導体部被覆電線３１の長手方向の形状の自由度が向上する。なお、アルミニウム系導体部２０は、撚り線の形態に代えて、アルミニウム系導体線２１を撚らずに束ねた形態でもよい。 In the electric wire 1 with a terminal, the aluminum-based conductor portion 20 is in the form of a stranded wire in which a plurality of aluminum-based conductor wires 21 are twisted. Since the aluminum-based conductor portion 20 is a stranded wire, the bendability of the aluminum-based conductor portion-covered electric wire 31 is improved, and the flexibility of the shape of the aluminum-based conductor portion-covered electric wire 31 in the longitudinal direction is improved. The aluminum-based conductor portion 20 may have a form in which the aluminum-based conductor wires 21 are bundled without being twisted, instead of the form of stranded wires.
アルミニウム系導体線２１の直径は、特に限定されないが、その下限値は、細線化によるアルミニウム系導体線２１自体の本数増加を防止することで第１のアルミニウム系導体線２１−１の本数増加を防止して、第１のアルミニウム系導体線２１−１間の電気抵抗の上昇を防止する点から、１．０ｍｍが好ましく、１．５ｍｍが特に好ましい。一方で、アルミニウム系導体線２１の直径の上限値は、アルミニウム系導体部被覆電線３１の曲げ加工性等の点から３．０ｍｍが好ましく、２．５ｍｍが特に好ましい。上記直径は、非圧着部におけるアルミニウム系導体線２１の直径を意味する。 The diameter of the aluminum-based conductor wire 21 is not particularly limited, but the lower limit value is that the number of first aluminum-based conductor wires 21-1 is increased by preventing the number of aluminum-based conductor wires 21 itself from increasing due to thinning. From the viewpoint of preventing the increase in electrical resistance between the first aluminum-based conductor wires 21-1, 1.0 mm is preferable, and 1.5 mm is particularly preferable. On the other hand, the upper limit of the diameter of the aluminum-based conductor wire 21 is preferably 3.0 mm, particularly preferably 2.5 mm, from the viewpoint of the bending workability of the aluminum-based conductor portion covered electric wire 31. The said diameter means the diameter of the aluminum-type conductor wire 21 in a non-crimping part.
アルミニウム系導体部２０を構成するアルミニウム系導体線２１の本数は、複数本であれば、特に限定されないが、アルミニウム系導体線２１の直径が１．０ｍｍ以上３．０ｍｍ以下の場合には、アルミニウム系導体部被覆電線３１のアルミニウム系導体部２０として所定の直径を確保して大電流の通電を可能とする点から、７本以上１００本以下が好ましい。 The number of the aluminum-based conductor wires 21 constituting the aluminum-based conductor portion 20 is not particularly limited as long as it is plural, but when the diameter of the aluminum-based conductor wire 21 is 1.0 mm or more and 3.0 mm or less, aluminum is used. From the point which ensures a predetermined | prescribed diameter as the aluminum-type conductor part 20 of the system conductor part covering electric wire 31, and enables energization of a large current, 7 or more and 100 or less are preferable.
なお、アルミニウム系端子１０の表面は、必要に応じて、スズ（Ｓｎ）を含む膜で被覆されていてもよい。アルミニウム系端子１０の表面がＳｎを含む膜で被覆されていることで、アルミニウム系端子１０表面の腐食を防止できる。また、アルミニウム系端子１０の表面がＳｎを含む膜で被覆され、アルミニウム系導体部２０がＳｎを含む膜と接することで、アルミニウム系導体部２０とアルミニウム系端子１０との電気的接続性が向上する。 In addition, the surface of the aluminum-type terminal 10 may be coat | covered with the film | membrane containing tin (Sn) as needed. Since the surface of the aluminum-based terminal 10 is covered with a film containing Sn, corrosion of the surface of the aluminum-based terminal 10 can be prevented. Further, the electrical connection between the aluminum-based conductor portion 20 and the aluminum-based terminal 10 is improved because the surface of the aluminum-based terminal 10 is covered with a film containing Sn and the aluminum-based conductor portion 20 is in contact with the film containing Sn. To do.
一方で、Ｓｎを含む膜の表面には、Ｓｎの酸化膜層が形成される。しかし、Ｓｎを含む膜の表面に形成されるＳｎの酸化膜層は脆く、アルミニウム系導体部２０を導体圧着部位１１に圧着する際に適度に破壊されて、Ｓｎを含む膜が露出する。よって、圧着部２３において、アルミニウム系導体部２０はＳｎを含む膜と十分に接することができ、また、Ｓｎを含む膜の表面の一部に残ったＳｎの酸化膜層によって、アルミニウム系導体部２０がアルミニウム系端子１０に安定的に固定される。従って、Ｓｎを含む膜は、アルミニウム系導体部２０とアルミニウム系端子１０間の固定性を向上させることもできる。 On the other hand, an Sn oxide film layer is formed on the surface of the film containing Sn. However, the Sn oxide film layer formed on the surface of the Sn-containing film is fragile, and is appropriately broken when the aluminum-based conductor portion 20 is pressure-bonded to the conductor pressure-bonding portion 11 to expose the Sn-containing film. Therefore, in the crimping portion 23, the aluminum-based conductor portion 20 can sufficiently come into contact with the film containing Sn, and the aluminum-based conductor portion is formed by the Sn oxide film layer remaining on a part of the surface of the film containing Sn. 20 is stably fixed to the aluminum-based terminal 10. Therefore, the film containing Sn can also improve the fixing property between the aluminum-based conductor portion 20 and the aluminum-based terminal 10.
アルミニウム系端子１０の表面のうち、内面または外面のみがＳｎを含む膜で被覆されていてもよく、両面がＳｎを含む膜で被覆されていてもよい。また、必要に応じて、Ｓｎを含む膜とアルミニウム系端子１０の表面との間にＮｉを含む層を形成してもよい。 Of the surface of the aluminum-based terminal 10, only the inner surface or the outer surface may be coated with a film containing Sn, or both surfaces may be coated with a film containing Sn. Moreover, you may form the layer containing Ni between the film | membrane containing Sn, and the surface of the aluminum-type terminal 10 as needed.
Ｓｎを含む膜の平均厚さは、特に限定されないが、その下限値は、アルミニウム端子１０表面の耐腐食性と電気接続性の点から０．１μｍが好ましく、０．５μｍが特に好ましい。一方で、Ｓｎを含む膜の平均厚さの上限値は、Ｓｎの体積抵抗率が低く、抵抗値の上昇を防ぐ観点から２０μｍが好ましく、１０μｍが特に好ましい。Ｓｎを含む膜の形成方法としては、例えば、めっき処理を挙げることができる。従って、Ｓｎを含む膜の形態としては、めっき膜を挙げることができる。 The average thickness of the film containing Sn is not particularly limited, but the lower limit is preferably 0.1 μm and particularly preferably 0.5 μm from the viewpoint of corrosion resistance and electrical connectivity on the surface of the aluminum terminal 10. On the other hand, the upper limit value of the average thickness of the film containing Sn is preferably 20 μm, particularly preferably 10 μm, from the viewpoint of low volume resistivity of Sn and preventing an increase in resistance value. Examples of a method for forming a film containing Sn include plating. Therefore, a plated film can be given as an example of the film containing Sn.
Ｓｎを含む膜の成分としては、純スズを挙げることができる。 Pure tin can be mentioned as a component of the film containing Sn.
次に、本発明の実施形態に係る端子付き電線１の製造方法例について説明する。本発明の実施形態に係る端子付き電線１の製造方法は、例えば、主に、アルミニウム系導体部被覆電線３１を準備する工程と、アルミニウム系導体部被覆電線３１からアルミニウム系導体部２０を露出させる工程と、露出させたアルミニウム系導体部２０の相互に隣接する第１のアルミニウム系導体線２１−１間に介在物４０を配置させる工程と、介在物４０を配置させたアルミニウム系導体部２０をアルミニウム系端子１０に圧着させる工程と、を含む。 Next, the example of a manufacturing method of the electric wire 1 with a terminal which concerns on embodiment of this invention is demonstrated. The manufacturing method of the electric wire 1 with a terminal which concerns on embodiment of this invention mainly exposes the aluminum-type conductor part 20 from the process which prepares the aluminum-type conductor part covered electric wire 31, and the aluminum-type conductor part covered electric wire 31, for example. A step, a step of disposing the inclusion 40 between the first aluminum-based conductor wires 21-1 adjacent to each other of the exposed aluminum-based conductor portion 20, and an aluminum-based conductor portion 20 in which the inclusion 40 is disposed. And crimping the aluminum-based terminal 10.
まず、アルミニウム系導体部被覆電線３１を準備する。アルミニウム系導体部被覆電線３１を構成するアルミニウム系導体線２１−１及び絶縁被覆３０の材料としては、それぞれ、上記した材料を使用することができる。アルミニウム系導体部２０としては、例えば、直径１．０ｍｍ程度のアルミニウム系導体線２１−１が３７本束ねられて構成されたサイズ（太さ）のアルミニウム系導体部２０を挙げることができる。 First, an aluminum-based conductor covered wire 31 is prepared. As the materials for the aluminum-based conductor wire 21-1 and the insulating coating 30 constituting the aluminum-based conductor portion covered electric wire 31, the materials described above can be used. Examples of the aluminum-based conductor portion 20 include an aluminum-based conductor portion 20 having a size (thickness) configured by bundling 37 aluminum-based conductor wires 21-1 having a diameter of about 1.0 mm.
次に、アルミニウム系導体部被覆電線３１の一方端について、絶縁被覆３０の一部を所定の長さだけ剥いで、アルミニウム系導体部２０を露出させる。アルミニウム系導体部被覆電線３１から絶縁被覆３０を剥ぐ手段は、特に限定されず、例えば、ワイヤーストリッパーなどの工具または機器を使用して絶縁被覆３０を剥ぐことができる。絶縁被覆３０を剥ぐ長さは、圧着部２３の寸法等に応じて適宜選択可能であり、例えば、２０〜１００ｍｍが好ましく、３０〜５０ｍｍが特に好ましい。 Next, with respect to one end of the aluminum-based conductor portion-covered electric wire 31, a part of the insulating coating 30 is peeled by a predetermined length to expose the aluminum-based conductor portion 20. The means for stripping the insulating coating 30 from the aluminum-based conductor coated wire 31 is not particularly limited, and the insulating coating 30 can be stripped using, for example, a tool or equipment such as a wire stripper. The length at which the insulating coating 30 is peeled off can be appropriately selected according to the dimensions of the pressure-bonding portion 23, for example, preferably 20 to 100 mm, and particularly preferably 30 to 50 mm.
次に、アルミニウム系導体部被覆電線３１の一方端において露出させたアルミニウム系導体部２０の、相互に隣接する第１のアルミニウム系導体線２１−１間に、介在物４０を配置させる。第１のアルミニウム系導体線２１−１間に介在物４０を配置させる手段としては、例えば、分散媒中に介在物４０を添加後、撹拌して介在物４０の分散相を調製し、得られた介在物４０の分散相に、露出させたアルミニウム系導体部２０を浸漬させる方法が挙げられる。分散媒と介在物４０の質量比を調整することで、介在物４０の存在頻度を調整することができる。また、介在物４０の平均直径及び材料としては、上記した平均直径及び材料のものを使用することができる。 Next, the inclusion 40 is arranged between the first aluminum-based conductor wires 21-1 adjacent to each other of the aluminum-based conductor portion 20 exposed at one end of the aluminum-based conductor portion-covered electric wire 31. As a means for arranging the inclusions 40 between the first aluminum-based conductor wires 21-1, for example, the inclusions 40 are added to the dispersion medium and then stirred to prepare a dispersed phase of the inclusions 40. A method of immersing the exposed aluminum-based conductor 20 in the dispersed phase of the inclusions 40 may be mentioned. The existence frequency of the inclusion 40 can be adjusted by adjusting the mass ratio of the dispersion medium and the inclusion 40. Moreover, as an average diameter and material of the inclusion 40, the thing of an above-mentioned average diameter and material can be used.
次に、必要に応じて、介在物４０を配置させたアルミニウム系導体部２０を構成する複数のアルミニウム系導体線２１−１を撚り合わせて束ねて、アルミニウム系導体部２０を撚り線の形態とする。 Next, if necessary, a plurality of aluminum-based conductor wires 21-1 constituting the aluminum-based conductor portion 20 in which the inclusions 40 are arranged are twisted and bundled to form the aluminum-based conductor portion 20 in the form of a stranded wire. To do.
次に、介在物４０を配置させたアルミニウム系導体部２０をアルミニウム系端子１０に圧着させる。アルミニウム系端子１０の材料としては、上記した材料を使用することができる。介在物４０を配置させたアルミニウム系導体部２０をアルミニウム系端子１０に圧着させる手段は、公知の手段を使用することができ、例えば、介在物４０を配置させたアルミニウム系導体部２０をアルミニウム系端子１０の導体圧着部１１に挿入した後、導体圧着部位１１をかしめ治具を用いたかしめ等で所定量潰すことで、アルミニウム系導体部２０を、その外周に沿ってアルミニウム系端子１０に圧着、固定する。導体圧着部位１１をかしめ等で所定量潰す際に、減面部２４におけるアルミニウム系導体部２０の減面率Ｒ及び減面部位Ｃの長さとしては、上記した範囲を挙げることができる。アルミニウム系導体部２０をアルミニウム系端子１０に圧着、固定することで、アルミニウム系導体部２０がアルミニウム系端子１０と電気的に接続された端子付き電線１を製造することができる。 Next, the aluminum-based conductor portion 20 on which the inclusions 40 are disposed is crimped to the aluminum-based terminal 10. As the material of the aluminum-based terminal 10, the above-described materials can be used. As a means for pressure-bonding the aluminum-based conductor portion 20 in which the inclusions 40 are disposed to the aluminum-based terminal 10, known means can be used. For example, the aluminum-based conductor portion 20 in which the inclusions 40 are disposed may be aluminum-based. After being inserted into the conductor crimping portion 11 of the terminal 10, the aluminum crimping portion 11 is crimped to the aluminum-based terminal 10 along its outer periphery by crushing the conductor crimping portion 11 with a caulking jig or the like by a predetermined amount. , Fix. When the conductor crimping part 11 is crushed by a predetermined amount by caulking or the like, examples of the area reduction ratio R of the aluminum-based conductor part 20 and the length of the area reduction part C in the surface reduction part 24 include the above-described ranges. By crimping and fixing the aluminum-based conductor 20 to the aluminum-based terminal 10, the terminal-attached electric wire 1 in which the aluminum-based conductor 20 is electrically connected to the aluminum-based terminal 10 can be manufactured.
次に、本発明の実施例を説明するが、本発明はその趣旨を超えない限り、これらの例に限定されるものではない。 Next, examples of the present invention will be described, but the present invention is not limited to these examples as long as it does not exceed the gist thereof.
実施例１〜８
介在物が配置されたアルミニウム系導体部の調製方法
分散媒として潤滑油が主成分のグリースを用い、該分散媒に介在物を添加、攪拌して介在物の分散相を調製した。介在物の存在頻度は、分散媒と介在物の質量比率を調整することで制御した。介在物の平均直径と成分及び存在頻度を、下記表１に示す。なお、実施例５では亜鉛粉末４５質量％、ＳｉＣ粉末１０質量％、残部が分散媒からなる介在物の分散相を用いた。アルミニウム系導体部被覆電線の一方端について、絶縁被覆の一部を所定の長さだけ剥いで、直径１ｍｍの材質Ａ１０７０の純アルミニウム導体線が３７本束ねられた状態で露出させた。介在物の分散相を撹拌しながら、露出させた３７本の純アルミニウム導体線を在物の分散相に浸漬させた。その後、３７本の純アルミニウム導体線を撚り合わせて、介在物が配置されたアルミニウム系導体部（撚り線の形態）を調製した。
Examples 1-8
Preparation method of aluminum-based conductor portion in which inclusions are arranged Grease mainly composed of a lubricating oil was used as a dispersion medium, and inclusions were added to the dispersion medium and stirred to prepare a dispersed phase of inclusions. The frequency of inclusions was controlled by adjusting the mass ratio of the dispersion medium and the inclusions. Table 1 below shows the average diameter, components, and existence frequency of inclusions. In Example 5, 45 mass% of zinc powder, 10 mass% of SiC powder, and the dispersed phase of inclusions with the balance being a dispersion medium were used. About one end of the aluminum-based conductor covered electric wire, a part of the insulating coating was peeled off by a predetermined length, and exposed in a state where 37 pure aluminum conductor wires of material A1070 having a diameter of 1 mm were bundled. While the dispersed phase of the inclusions was stirred, 37 exposed pure aluminum conductor wires were immersed in the existing dispersed phase. Thereafter, 37 pure aluminum conductor wires were twisted to prepare an aluminum-based conductor portion (in the form of a stranded wire) in which inclusions were arranged.
端子付き電線の製造方法
アルミニウム系端子として、純アルミニウム端子の内表面と外表面に、それぞれ、３μｍのニッケル層と１０μｍのスズ層を上記順序で積層させた被覆層を形成させたアルミニウム系端子を用意した。このアルミニウム系端子の導体圧着部位に、上記のようにして得られた介在物の配置されたアルミニウム系導体部を差し込み、下記表１に示す減面率と減面部位Ｃの長さ／非圧着部におけるアルミニウム系導体部の直径の圧着条件にて、かしめにより、アルミニウム系導体部をアルミニウム系端子に圧着した。
Manufacturing method of electric wire with terminal As an aluminum-based terminal, an aluminum-based terminal in which a coating layer in which a 3 μm nickel layer and a 10 μm tin layer are laminated in the above order is formed on the inner surface and outer surface of a pure aluminum terminal, respectively. Prepared. The aluminum-based conductor portion in which the inclusions obtained as described above are arranged is inserted into the conductor crimping portion of the aluminum-based terminal, and the surface area reduction ratio and the length of the surface-reducing portion C shown in Table 1 below / non-crimping are shown. The aluminum-based conductor portion was crimped to the aluminum-based terminal by caulking under the pressure-bonding condition of the diameter of the aluminum-based conductor portion.
比較例１では、露出させた３７本の純アルミニウム導体線に介在物の分散相を浸漬させなかったこと以外は、実施例１〜８と同様にして端子付き電線を製造した。 In Comparative Example 1, a terminal-attached electric wire was manufactured in the same manner as in Examples 1 to 8, except that the dispersed phase of inclusions was not immersed in the exposed 37 pure aluminum conductor wires.
（１）介在物の平均直径の測定方法
下記表１における介在物の平均直径は、走査型電子顕微鏡（ＳＥＭ）または光学顕微鏡を用いて、アルミニウム系端子との圧着部の３箇所の横断面（アルミニウム系導体部の長手方向に対して直交方向の断面）について、１箇所の横断面あたり任意に１０個の介在物を選定し、選定した合計３０個の各介在物の最長直径をそれぞれ測定し、その測定値の平均から算出した。
(1) Measuring method of average diameter of inclusions The average diameter of inclusions in the following Table 1 is a cross section of three locations of a crimping part with an aluminum terminal using a scanning electron microscope (SEM) or an optical microscope ( For the cross section perpendicular to the longitudinal direction of the aluminum-based conductor portion, arbitrarily select 10 inclusions per cross section, and measure the longest diameter of each of the 30 inclusions selected in total. It was calculated from the average of the measured values.
（２）介在物の存在頻度の測定方法
下記表１における介在物の存在頻度は、アルミニウム系導体部の圧着部における横断面において、任意に選択した１本の第１のアルミニウム系導体線について、その周方向の長さ１ｍｍあたりに存在する介在物の個数を測定することで評価した。周方向の長さは、走査型電子顕微鏡（ＳＥＭ）または光学顕微鏡を用いて、アルミニウム系端子との圧着部の横断面を撮影し、撮影した圧着部の画像または写真から、介在物の外縁形状を極力近似する方法で測定した。介在物の外縁形状を極力近似する方法としては、上記の通り、図５に示すように、長さが介在物の平均直径の１０％以下の直線を介在物の外縁形状に沿って折れ線グラフ状に結ぶ方法を用いた。
(2) Inclusion frequency measurement method The inclusion frequency in Table 1 below is the one selected from the first aluminum-based conductor wire arbitrarily selected in the cross-section of the crimp-bonded portion of the aluminum-based conductor. Evaluation was made by measuring the number of inclusions present per 1 mm in the circumferential direction. The length in the circumferential direction is determined by taking a cross-section of the crimped part with the aluminum-based terminal using a scanning electron microscope (SEM) or optical microscope, and from the photographed image or photograph of the crimped part, the outer edge shape of the inclusion Was measured by a method approximating as much as possible. As described above, as shown in FIG. 5, a straight line having a length of 10% or less of the average diameter of inclusions is formed as a line graph along the outer edge shape of inclusions as a method of approximating the outer edge shape of inclusions as much as possible. The method of tying was used.
（３）温度上昇試験の評価方法
ＪＩＳ Ｃ ２８１０に準拠して、規定電流を端子付き電線に印加し、アルミニウム系端子表面とアルミニウム系導体部表面の上昇温度を測定し、下記基準で評価した。
◎：アルミニウム系端子表面の上昇温度が３０Ｋ以下、且つアルミニウム系端子表面の上昇温度がアルミニウム系導体部表面の上昇温度以下
○：アルミニウム系端子表面の上昇温度が３０Ｋ超５０Ｋ以下、またはアルミニウム系端子表面の上昇温度が３０Ｋ以下だが、アルミニウム系端子表面の上昇温度がアルミニウム系導体部表面の上昇温度以上
×：アルミニウム系端子表面の上昇温度が５０Ｋ超
(3) Evaluation method of temperature rise test In accordance with JIS C 2810, a specified current was applied to the electric wire with a terminal, and the temperature rises of the aluminum-based terminal surface and the aluminum-based conductor portion surface were measured and evaluated according to the following criteria.
A: The rising temperature of the aluminum-based terminal surface is 30K or less, and the rising temperature of the aluminum-based terminal surface is the rising temperature of the aluminum-based conductor surface or less. ○: The rising temperature of the aluminum-based terminal surface is more than 30K to 50K or less, or the aluminum-based terminal. The temperature rise of the surface is 30K or less, but the temperature rise of the aluminum terminal surface is higher than the temperature rise of the aluminum conductor surface.
（４）ヒートサイクル試験の評価方法
ＪＩＳ Ｃ ２８１０に準拠して、規定電流を規定時間、端子付き電線に印加し、その後、規定時間、印加を休止した。通電から休止までを１回として下記基準で評価した。
◎：２５回目のアルミニウム系端子表面の上昇温度が７５Ｋ以下、５００回目のアルミニウム系端子表面の上昇温度が２５回目のアルミニウム系端子表面の上昇温度に８Ｋを加えた温度以下、かつ、２５回目のアルミニウム系端子表面の上昇温度がアルミニウム系導体部表面の上昇温度以下
〇：２５回目のアルミニウム系端子表面の上昇温度が７５Ｋ超１００Ｋ以下であり、５００回目のアルミニウム系端子表面の上昇温度が２５回目のアルミニウム系端子表面の上昇温度に８Ｋ超２０Ｋ以下を加えた温度、または、２５回目のアルミニウム系端子表面の上昇温度が７５Ｋ以下、５００回目のアルミニウム系端子表面の上昇温度が２５回目のアルミニウム系端子表面の上昇温度に８Ｋを加えた温度以下だが、２５回目のアルミニウム系端子表面の上昇温度がアルミニウム系導体部表面の上昇温度以上
×：２５回目のアルミニウム系端子表面の上昇温度が１００Ｋ超、または５００回目のアルミニウム系端子表面の上昇温度が２５回目のアルミニウム系端子表面の上昇温度に２０Ｋ超を加えた温度
(4) Evaluation method of heat cycle test In accordance with JIS C 2810, the specified current was applied to the electric wire with terminal for a specified time, and then the application was suspended for the specified time. Evaluation from the energization to the rest was performed according to the following criteria as one time.
A: The 25th rising temperature of the aluminum-based terminal surface is 75K or lower, the rising temperature of the 500th aluminum-based terminal surface is lower than the temperature of the 25th rising temperature of the aluminum-based terminal surface plus 8K, and the 25th time The rising temperature of the aluminum-based terminal surface is below the rising temperature of the aluminum-based conductor surface ○: The rising temperature of the 25th aluminum-based terminal surface is more than 75K and 100K or less, and the rising temperature of the 500-th aluminum-based terminal surface is the 25th time The temperature obtained by adding more than 8K to 20K or less to the rising temperature of the aluminum-based terminal surface, or the rising temperature of the 25th aluminum-based terminal surface is 75K or less, and the rising temperature of the 500th aluminum-based terminal surface is 25th aluminum-based The temperature of the terminal surface rises below 8K plus the temperature, but the 25th aluminum terminal table Rise temperature is higher than the rise temperature on the surface of the aluminum-based conductor part x: 25th rise temperature on the aluminum-based terminal surface exceeds 100K, or the rise temperature of the 500th-time aluminum-based terminal surface is the 25th rise in the aluminum-based terminal surface Temperature with more than 20K added to temperature
（５）素線間抵抗試験の評価方法
各純アルミニウム導体線（素線）とアルミニウム系端子間の電気抵抗値を４端子抵抗測定法にて測定し、測定した電気抵抗値の平均値と標準偏差を算出して、下記基準で評価した。
◎：全ての素線とアルミニウム系端子間の電気抵抗値の標準偏差が平均値の１０％以内
〇：全ての素線とアルミニウム系端子間の電気抵抗値の標準偏差が平均値の１０％超２５％以内
×：全ての素線とアルミニウム系端子間の電気抵抗値の標準偏差が平均値の２５％超
(5) Evaluation method of resistance test between strands The electrical resistance value between each pure aluminum conductor wire (strand) and the aluminum-based terminal is measured by a 4-terminal resistance measurement method, and the average value and standard of the measured electrical resistance value Deviation was calculated and evaluated according to the following criteria.
◎: Standard deviation of electrical resistance value between all strands and aluminum terminals within 10% of the average value ○: Standard deviation of electrical resistance values between all strands and aluminum terminals exceeds 10% of the average value Within 25% x: Standard deviation of electrical resistance value between all wires and aluminum terminals exceeds 25% of average value
（６）総合判定評価方法
総合判定は、以下のように評価した。
◎：温度上昇試験、ヒートサイクル試験、素線間抵抗試験のいずれも「○」評価以上、且つ２つ以上の試験で「◎」評価
〇：温度上昇試験、ヒートサイクル試験、素線間抵抗試験のいずれも「○」評価以上、且つ、１つ以下の試験で「◎」評価
×：温度上昇試験、ヒートサイクル試験、素線間抵抗試験のいずれかで「×」評価
(6) Comprehensive evaluation method The comprehensive evaluation was evaluated as follows.
A: Temperature rise test, heat cycle test, and inter-element resistance test are all “O” evaluation or more and two or more tests are “◎” evaluation O: Temperature rise test, heat cycle test, inter-element resistance test In each case, “◯” evaluation or more, and “◎” evaluation in one or less tests ×: “×” evaluation in any of temperature rise test, heat cycle test, and resistance test between wires
上記表１に示すように、介在物が配置されたアルミニウム系導体部を用いた実施例１〜８では、素線間抵抗試験が「○」評価以上であり、アルミニウム系端子と接していないアルミニウム導体線間を含めてアルミニウム導体線間の電気抵抗の上昇を防止して、導通性が維持された。また、アルミニウム導体線間の導通性が維持された実施例１〜８では、アルミニウム系端子とアルミニウム導体線との間における電気的接続性が向上し、温度上昇試験とヒートサイクル試験がいずれも「○」評価以上となり、アルミニウム系端子の昇温を抑制できた。特に、介在物の存在頻度が１．５〜１０個／ｍｍ、介在物の平均直径が２〜１００μｍである実施例２、４、５では、総合判定が「◎」評価と、アルミニウム導体線間の導通性とアルミニウム系端子の昇温抑制に、特に優れていた。なお、実施例２、４、５の圧着条件は、減面率が７０〜８０％、減面部位Ｃの長さ／非圧着部におけるアルミニウム系導体部の直径の比率は１．５以上であった。 As shown in Table 1 above, in Examples 1 to 8 using the aluminum-based conductor portion in which inclusions are arranged, the resistance test between the strands is not less than “◯” evaluation, and aluminum not in contact with the aluminum-based terminal Electrical conductivity was maintained by preventing an increase in electrical resistance between the aluminum conductor wires including between the conductor wires. Moreover, in Examples 1-8 in which the electrical conductivity between the aluminum conductor wires was maintained, electrical connectivity between the aluminum-based terminal and the aluminum conductor wire was improved, and both the temperature rise test and the heat cycle test were “ It became more than "○" evaluation and the temperature rise of the aluminum-type terminal could be suppressed. In particular, in Examples 2, 4, and 5 in which the presence frequency of inclusions is 1.5 to 10 pieces / mm and the average diameter of inclusions is 2 to 100 μm, the overall judgment is between “評 価” evaluation and between aluminum conductor wires. It was particularly excellent in the electrical conductivity and the temperature rise suppression of aluminum-based terminals. The crimping conditions of Examples 2, 4, and 5 were a surface reduction ratio of 70 to 80%, and the ratio of the length of the reduced surface portion C / the diameter of the aluminum-based conductor portion in the non-crimped portion was 1.5 or more. It was.
一方で、介在物が配置されなかったアルミニウム系導体部を用いた比較例１では、温度上昇試験とヒートサイクル試験がいずれも「×」評価となり、アルミニウム系端子の昇温を抑制できなかった。 On the other hand, in Comparative Example 1 using the aluminum-based conductor portion in which no inclusion was disposed, the temperature rise test and the heat cycle test were both evaluated as “x”, and the temperature rise of the aluminum-based terminal could not be suppressed.
本発明の端子付き電線は、導体線及び端子にアルミニウムやアルミニウム合金を使用し、また、複数の導体線を備えた電線でも、電線の内部に配置された導体線間における電気抵抗の上昇を防止して、端子の昇温を抑制できるので、広汎な分野の電力ケーブルとして利用可能であり、例えば、外部環境から建築物の内部への配線に使用する低圧屋内配線用の電力ケーブルの分野で利用することができる。 The electric wire with a terminal of the present invention uses aluminum or an aluminum alloy for the conductor wire and the terminal, and even an electric wire having a plurality of conductor wires prevents an increase in electric resistance between the conductor wires arranged inside the electric wire. Therefore, it can be used as a power cable in a wide range of fields, for example, in the field of power cables for low-voltage indoor wiring used for wiring from the outside environment to the inside of a building. can do.
１ 端子付き電線
１０ アルミニウム系端子
２１ アルミニウム系導体線
２３ 圧着部
４０ 介在物
DESCRIPTION OF SYMBOLS 1 Electric wire with a terminal 10 Aluminum system terminal 21 Aluminum system conductor wire 23 Crimp part 40 Inclusion
Claims (9)
前記複数の導体線と前記端子との圧着部において、前記複数の導体線のうち、前記端子と接していない導体線の周面に介在物が存在する端子付き電線。 A terminal-attached electric wire in which a terminal of aluminum or aluminum alloy is crimped to a plurality of conductor wires including an aluminum wire and / or an aluminum alloy wire,
The electric wire with a terminal in which the inclusion exists in the peripheral surface of the conductor wire which is not in contact with the terminal among the plurality of conductor wires in the crimping part of the plurality of conductor wires and the terminal.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08321332A (en) * | 1995-05-26 | 1996-12-03 | Sumitomo Wiring Syst Ltd | Method of joining electric wires |
| JP2003243058A (en) * | 2002-02-19 | 2003-08-29 | Auto Network Gijutsu Kenkyusho:Kk | Pressure attaching method of aluminum electric wire to terminal |
| WO2013031885A1 (en) * | 2011-09-01 | 2013-03-07 | 株式会社オートネットワーク技術研究所 | Terminal fitting, wire provided with terminal fitting, and method for connecting terminal fitting and wire |
| JP2014534560A (en) * | 2011-10-07 | 2014-12-18 | タイコ エレクトロニクス アンプ ゲゼルシャフト ミット ベシュレンクテル ハウツンク | Crimp terminal |
| JP2017220428A (en) * | 2016-06-10 | 2017-12-14 | 日立金属株式会社 | Wire with terminal, manufacturing method of wire with terminal, wire and manufacturing method of wire |
-
2018
- 2018-05-30 JP JP2018103039A patent/JP7097233B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08321332A (en) * | 1995-05-26 | 1996-12-03 | Sumitomo Wiring Syst Ltd | Method of joining electric wires |
| JP2003243058A (en) * | 2002-02-19 | 2003-08-29 | Auto Network Gijutsu Kenkyusho:Kk | Pressure attaching method of aluminum electric wire to terminal |
| WO2013031885A1 (en) * | 2011-09-01 | 2013-03-07 | 株式会社オートネットワーク技術研究所 | Terminal fitting, wire provided with terminal fitting, and method for connecting terminal fitting and wire |
| JP2014534560A (en) * | 2011-10-07 | 2014-12-18 | タイコ エレクトロニクス アンプ ゲゼルシャフト ミット ベシュレンクテル ハウツンク | Crimp terminal |
| JP2017220428A (en) * | 2016-06-10 | 2017-12-14 | 日立金属株式会社 | Wire with terminal, manufacturing method of wire with terminal, wire and manufacturing method of wire |
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| JP7097233B2 (en) | 2022-07-07 |
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