JP2019040829A

JP2019040829A - Electric wire

Info

Publication number: JP2019040829A
Application number: JP2017164008A
Authority: JP
Inventors: 耕一郎山下; Koichiro Yamashita
Original assignee: Fujikura Ltd
Current assignee: Fujikura Ltd
Priority date: 2017-08-29
Filing date: 2017-08-29
Publication date: 2019-03-14

Abstract

To provide an electric wire capable of improving an electric conductivity between an aluminum conductor and a copper conductor.SOLUTION: An electric wire comprises: an aluminium electric wire part 10 including an aluminium core wire 12 that has a braid structure; a copper electric wire part 20 including a copper core wire 22; and a conductive terminal 30 that electrically connects the aluminium core wire 12 and the copper core wire 22. A conductive terminal 30 is crimped to: an aluminium exposure end part 16 of which the aluminium core wire 12 is exposed; and a copper exposure end part 26 of which the copper core wire 22 is exposed. The copper exposure end part 26 is housed in a cylindrical housing space formed by expanding the braid structure of the aluminium exposure end part 16 to an outer side from a center. The conductive terminal 30 includes: a first conductive part 33 crimped to the outer side of the aluminium exposure end part 16; and a second conductive part 34 crimped to the outer side of the copper exposure end part 26. The first conductive part 33 includes a serration 36 contacted to an outer periphery of the aluminium exposure end part 16.SELECTED DRAWING: Figure 2

Description

本発明は、電線に係り、特に銅からなる導体とアルミニウムからなる導体とを電気的に接続してなる電線に関するものである。 The present invention relates to an electric wire, and more particularly to an electric wire formed by electrically connecting a conductor made of copper and a conductor made of aluminum.

一般的に、電線としては、導電性及び経済性に優れているなどの理由から銅電線が用いられることが多い。一方で、自動車などにおいては、車両の軽量化のために、ワイヤハーネス内の電線として軽量のアルミニウムを導体（芯線）の材料としたものを使用することが多くなっている。このようなアルミニウム導体の表面には酸化皮膜が形成されるため、銅電線とアルミニウム電線とを電気的に接続する場合には、アルミニウム導体の酸化皮膜を突き破るための微小な突起（セレーション）を内面に形成したジョイント端子が用いられている（例えば、特許文献１参照）。 In general, a copper electric wire is often used as the electric wire for reasons such as excellent conductivity and economy. On the other hand, in an automobile or the like, in order to reduce the weight of a vehicle, a wire made of lightweight aluminum as a conductor (core wire) material is often used as an electric wire in a wire harness. Since an oxide film is formed on the surface of such an aluminum conductor, when electrically connecting a copper wire and an aluminum wire, a minute protrusion (serration) for breaking through the oxide film of the aluminum conductor is provided on the inner surface. (For example, refer to Patent Document 1).

しかしながら、このような従来のジョイント端子は、アルミニウム電線の導体の上に銅電線の導体を重ねてこれらを上側から圧着するものであるため、圧着の際にアルミニウム導体と銅導体とが動いて、セレーションが形成された部分からアルミニウム導体がずれてしまうことがある。そのような場合には、アルミニウム導体がジョイント端子と接触する面積が減少するため、アルミニウム導体と銅導体との間で十分な電気的導通が図れないこととなる。 However, since such a conventional joint terminal is one that overlaps the conductor of the copper electric wire on the conductor of the aluminum electric wire and crimps them from the upper side, the aluminum conductor and the copper conductor move during the crimping, The aluminum conductor may be displaced from the portion where the serration is formed. In such a case, since the area where the aluminum conductor contacts the joint terminal is reduced, sufficient electrical continuity cannot be achieved between the aluminum conductor and the copper conductor.

特許第５０７８５７２号明細書Japanese Patent No. 5078572

本発明は、このような従来技術の問題点に鑑みてなされたもので、アルミニウム導体と銅導体との間の電気的導通性を向上させることができる電線を提供することを目的とする。 This invention is made | formed in view of the problem of such a prior art, and it aims at providing the electric wire which can improve the electrical continuity between an aluminum conductor and a copper conductor.

本発明の一態様によれば、アルミニウム導体と銅導体との間の電気的導通性を向上させることができる電線が提供される。この電線は、編組構造を有するアルミニウム導体を含むアルミニウム電線部と、銅導体を含む銅電線部と、上記アルミニウム導体と上記銅導体との間を電気的に接続する導電端子とを備える。上記導電端子は、上記アルミニウム電線部の一方の端部で上記アルミニウム導体が露出したアルミニウム露出端部と、上記銅電線部の一方の端部で上記銅導体が露出した銅露出端部とに圧着される。上記銅露出端部の少なくとも一部は、上記アルミニウム露出端部における上記アルミニウム導体の編組構造を中心から外側に広げることにより形成された円筒状の収容空間に収容されている。上記導電端子は、上記アルミニウム露出端部の外側に圧着されて上記アルミニウム導体と電気的に接続される第１の導通部と、上記銅露出端部の外側に圧着されて上記銅導体と電気的に接続される第２の導通部とを含んでいる。上記第１の導通部は、上記アルミニウム露出端部の外周に接触するセレーションを有している。 According to one embodiment of the present invention, an electric wire that can improve electrical continuity between an aluminum conductor and a copper conductor is provided. The electric wire includes an aluminum electric wire portion including an aluminum conductor having a braided structure, a copper electric wire portion including a copper conductor, and a conductive terminal that electrically connects the aluminum conductor and the copper conductor. The conductive terminal is crimped to an aluminum exposed end portion where the aluminum conductor is exposed at one end portion of the aluminum electric wire portion and a copper exposed end portion where the copper conductor is exposed at one end portion of the copper electric wire portion. Is done. At least a part of the copper exposed end portion is accommodated in a cylindrical accommodating space formed by spreading the braided structure of the aluminum conductor at the aluminum exposed end portion outward from the center. The conductive terminal is crimped to the outside of the exposed aluminum end and is electrically connected to the aluminum conductor, and is crimped to the outside of the exposed copper end to be electrically connected to the copper conductor. And a second conductive portion connected to the. The first conductive portion has a serration that contacts the outer periphery of the exposed aluminum end portion.

このような構成により、銅露出端部の少なくとも一部が、アルミニウム露出端部におけるアルミニウム導体の編組構造を中心から外側に広げることにより形成された円筒状の収容空間に収容されているので、アルミニウム露出端部では銅導体の周囲にアルミニウム導体が配置されることとなる。このアルミニウム露出端部の外側に圧着される導通端子の第１の導通部にはセレーションが形成されているため、セレーションがアルミニウム導体に接触する割合を高めることができる。 With such a configuration, at least a part of the copper exposed end portion is accommodated in the cylindrical accommodating space formed by expanding the braided structure of the aluminum conductor at the aluminum exposed end portion from the center to the outside. At the exposed end, an aluminum conductor is disposed around the copper conductor. Since the serration is formed in the first conducting portion of the conducting terminal that is crimped to the outside of the exposed aluminum end portion, it is possible to increase the rate at which the serration contacts the aluminum conductor.

上記導電端子の上記第２の導通部の少なくとも一部は、上記銅電線部の上記銅露出端部に直接接触してもよい。また、上記導電端子の上記第１の導通部と上記第２の導通部とは、別個の加締め片により構成されていてもよい。 At least a part of the second conductive portion of the conductive terminal may be in direct contact with the copper exposed end portion of the copper electric wire portion. Moreover, the said 1st conduction | electrical_connection part and said 2nd conduction | electrical_connection part of the said conductive terminal may be comprised by the separate crimping piece.

本発明に係る電線によれば、アルミニウム導体と銅導体との間の電気的導通性を向上させることができる。 According to the electric wire according to the present invention, the electrical continuity between the aluminum conductor and the copper conductor can be improved.

図１は、本発明の一実施形態における電線を模式的に示す図である。FIG. 1 is a diagram schematically illustrating an electric wire according to an embodiment of the present invention. 図２は、図１に示す電線の構成要素を示す模式図である。FIG. 2 is a schematic diagram showing components of the electric wire shown in FIG. 図３は、図１に示す電線を製造する工程を説明するための模式図である。FIG. 3 is a schematic diagram for explaining a process of manufacturing the electric wire shown in FIG. 図４は、図１のＡ−Ａ線断面図である。FIG. 4 is a cross-sectional view taken along line AA in FIG. 図５は、図１のＢ−Ｂ線断面図である。5 is a cross-sectional view taken along line BB in FIG. 図６は、本発明の他の実施形態における電線の構成要素を示す模式図である。FIG. 6 is a schematic diagram showing components of an electric wire according to another embodiment of the present invention. 図７は、図６の電線を導電端子の第２の導電部を含む面で切断したときの断面図である。FIG. 7 is a cross-sectional view when the electric wire of FIG. 6 is cut along a plane including the second conductive portion of the conductive terminal.

以下、本発明に係る電線の実施形態について図１から図７を参照して詳細に説明する。なお、図１から図７において、同一又は相当する構成要素には、同一の符号を付して重複した説明を省略する。また、図１から図７においては、各構成要素の縮尺や寸法が誇張されて示されている場合や一部の構成要素が省略されている場合がある。 Hereinafter, embodiments of the electric wire according to the present invention will be described in detail with reference to FIGS. 1 to 7. 1 to 7, the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted. Further, in FIGS. 1 to 7, the scale and size of each component are exaggerated, and some components may be omitted.

図１は、本発明の一実施形態における電線１を模式的に示す図、図２は、図１に示す電線１の構成要素を示す模式図である。図１に示すように、電線１は、アルミニウム電線部１０と、銅電線部２０と、アルミニウム電線部１０と銅電線部２０とを接続する導電端子３０とを備えている。 FIG. 1 is a diagram schematically showing an electric wire 1 according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing components of the electric wire 1 shown in FIG. As shown in FIG. 1, the electric wire 1 includes an aluminum electric wire portion 10, a copper electric wire portion 20, and a conductive terminal 30 that connects the aluminum electric wire portion 10 and the copper electric wire portion 20.

図２に示すように、アルミニウム電線部１０は、アルミニウムからなる導体（芯線）１２と、このアルミニウム芯線１２を覆う被覆１４とを含んでいる。このアルミニウム芯線１２は編組構造を有している。アルミニウム電線部１０の一方の端部においては、一定の長さにわたって被覆１４が剥がされており、被覆１４からアルミニウム芯線１２が露出したアルミニウム露出端部１６が形成されている。 As shown in FIG. 2, the aluminum electric wire portion 10 includes a conductor (core wire) 12 made of aluminum and a coating 14 that covers the aluminum core wire 12. The aluminum core wire 12 has a braided structure. At one end portion of the aluminum electric wire portion 10, the coating 14 is peeled off over a certain length, and an aluminum exposed end portion 16 in which the aluminum core wire 12 is exposed from the coating 14 is formed.

また、銅電線部２０は、銅からなる導体（芯線）２２と、この銅芯線２２を覆う被覆２４とを含んでいる。この銅芯線２２は複数の銅素線から構成されている。銅電線部２０の一方の端部においては、一定の長さにわたって被覆２４が剥がされており、被覆２４から銅芯線２２が露出した銅露出端部２６が形成されている。 The copper electric wire portion 20 includes a conductor (core wire) 22 made of copper and a coating 24 covering the copper core wire 22. The copper core wire 22 is composed of a plurality of copper strands. At one end of the copper electric wire portion 20, the coating 24 is peeled off over a certain length, and a copper exposed end portion 26 where the copper core wire 22 is exposed from the coating 24 is formed.

導電端子３０は、加締めることによってアルミニウム電線部１０のアルミニウム露出端部１６と銅電線部２０の銅露出端部２６に圧着されており、図２には加締める前の状態の導電端子３０が示されている。後述するように、この導電端子３０によって、アルミニウム電線部１０のアルミニウム芯線１２と銅電線部２０の銅芯線２２とが互いに電気的に接続される。 The conductive terminal 30 is crimped to the aluminum exposed end portion 16 of the aluminum electric wire portion 10 and the copper exposed end portion 26 of the copper electric wire portion 20 by caulking. FIG. 2 shows the conductive terminal 30 in a state before caulking. It is shown. As will be described later, the conductive core 30 electrically connects the aluminum core wire 12 of the aluminum electric wire portion 10 and the copper core wire 22 of the copper electric wire portion 20 to each other.

図２に示すように、加締める前の導電端子３０は、略Ｕ字状の断面を長手方向に延ばした外形を有しており、底部３１と、底部３１の両側から上方に延びる１対の加締片３２とを含んでいる。導電端子３０には、アルミニウム芯線１２と電気的に接続される第１の導通部３３と、銅芯線２２と電気的に接続される第２の導通部３４とが長手方向に隣接して形成されている。第１の導通部３３の内面３５には、長手方向と垂直な方向に延びるセレーション３６が形成されている。 As shown in FIG. 2, the conductive terminal 30 before caulking has an outer shape in which a substantially U-shaped cross section is extended in the longitudinal direction, and a pair of bottom 31 and a pair extending upward from both sides of the bottom 31. The crimping piece 32 is included. The conductive terminal 30 is formed with a first conductive portion 33 electrically connected to the aluminum core wire 12 and a second conductive portion 34 electrically connected to the copper core wire 22 adjacent to each other in the longitudinal direction. ing. A serration 36 extending in a direction perpendicular to the longitudinal direction is formed on the inner surface 35 of the first conducting portion 33.

このような導電端子３０をアルミニウム電線部１０及び銅電線部２０に取り付ける際には、図３に示すように、アルミニウム露出端部１６におけるアルミニウム芯線１２の編組構造を中心から外側に広げて、アルミニウム芯線１２の内側に円筒状の収容空間を形成し、その収容空間内に銅露出端部２６を挿入する。このとき、銅露出端部２６のすべてをアルミニウム露出端部１６には挿入せず、銅露出端部２６の少なくとも一部を外部に露出させておく。このように、アルミニウム芯線１２が編組構造を有しているため、容易にアルミニウム芯線１２を中心から外側に拡げて内側に円筒状の収容空間を形成することができる。 When attaching such a conductive terminal 30 to the aluminum electric wire portion 10 and the copper electric wire portion 20, as shown in FIG. 3, the braided structure of the aluminum core wire 12 at the aluminum exposed end portion 16 is expanded from the center to the outside, and the aluminum A cylindrical housing space is formed inside the core wire 12, and the copper exposed end portion 26 is inserted into the housing space. At this time, not all of the copper exposed end portion 26 is inserted into the aluminum exposed end portion 16, and at least a part of the copper exposed end portion 26 is exposed to the outside. Thus, since the aluminum core wire 12 has a braided structure, the aluminum core wire 12 can be easily expanded from the center to the outside to form a cylindrical accommodation space on the inside.

この状態で、図２に示す導電端子３０をアルミニウム露出端部１６及び銅露出端部２６の外側に圧着させる。このとき、アルミニウム露出端部１６の周囲に導電端子３０の第１の導通部３３が位置し、外部に露出した銅露出端部２６の部分に第２の導通部３４の少なくとも一部が位置するように導電端子３０を配置する。このようにして、導電端子３０を加締めてアルミニウム露出端部１６及び銅露出端部２６の外側に圧着させることで、第１の導通部３３に形成されたセレーション３６がアルミニウム露出端部１６のアルミニウム芯線１２の表面に形成された酸化皮膜を破ってアルミニウム芯線１２に接触して、導電端子３０とアルミニウム芯線１２とが電気的に接続される。また、外部に露出した銅露出端部２６の銅芯線２２に第２の導通部３４が直接接触して、導電端子３０と銅芯線２２とが電気的に接続される。したがって、アルミニウム芯線１２と銅芯線２２とが導電端子３０を介して互いに電気的に接続される。 In this state, the conductive terminal 30 shown in FIG. 2 is crimped to the outside of the aluminum exposed end portion 16 and the copper exposed end portion 26. At this time, the 1st conduction | electrical_connection part 33 of the conductive terminal 30 is located in the circumference | surroundings of the aluminum exposed end part 16, and at least one part of the 2nd conduction | electrical_connection part 34 is located in the part of the copper exposed end part 26 exposed outside. Thus, the conductive terminal 30 is arranged. In this way, the conductive terminal 30 is crimped and crimped to the outside of the aluminum exposed end portion 16 and the copper exposed end portion 26, so that the serration 36 formed in the first conductive portion 33 becomes the aluminum exposed end portion 16. The conductive film 30 is electrically connected to the aluminum core wire 12 by breaking the oxide film formed on the surface of the aluminum core wire 12 and coming into contact with the aluminum core wire 12. Further, the second conductive portion 34 is in direct contact with the copper core wire 22 of the exposed copper end portion 26 exposed to the outside, and the conductive terminal 30 and the copper core wire 22 are electrically connected. Therefore, the aluminum core wire 12 and the copper core wire 22 are electrically connected to each other via the conductive terminal 30.

図４は、図１のＡ−Ａ線断面図であり、導電端子３０の第１の導通部３３の断面を示している。図４に示すように、導電端子３０の第１の導通部３３の内側では、銅芯線２２の周囲にアルミニウム芯線１２が位置しているので、圧着の際に、アルミニウム芯線１２と銅芯線２２とが多少動いても、アルミニウム芯線１２は銅芯線２２の外側に位置したままである。したがって、第１の導通部３３のセレーション３６は、その全長にわたってアルミニウム芯線１２と接触することができ、セレーション３６がアルミニウム芯線１２に接触する割合が高くなる。このように、本実施形態によれば、導電端子３０とアルミニウム芯線１２との間の電気的導通性を高めることができる。 FIG. 4 is a cross-sectional view taken along line AA in FIG. 1 and shows a cross section of the first conductive portion 33 of the conductive terminal 30. As shown in FIG. 4, since the aluminum core wire 12 is located around the copper core wire 22 inside the first conductive portion 33 of the conductive terminal 30, the aluminum core wire 12 and the copper core wire 22 are The aluminum core wire 12 remains positioned outside the copper core wire 22 even if it moves slightly. Therefore, the serration 36 of the first conductive portion 33 can contact the aluminum core wire 12 over the entire length thereof, and the ratio of the serration 36 contacting the aluminum core wire 12 is increased. Thus, according to this embodiment, the electrical continuity between the conductive terminal 30 and the aluminum core wire 12 can be enhanced.

図５は、図１のＢ−Ｂ線断面図であり、導電端子３０の第２の導通部３４の断面を示している。図５に示すように、導電端子３０の第２の導通部３４は、底部３１と加締片３２の先端３８とで銅芯線２２に直接接触しており、この部分で導電端子３０と銅芯線２２とが電気的に接続される。 FIG. 5 is a cross-sectional view taken along the line BB in FIG. 1 and shows a cross section of the second conductive portion 34 of the conductive terminal 30. As shown in FIG. 5, the second conducting portion 34 of the conductive terminal 30 is in direct contact with the copper core wire 22 at the bottom portion 31 and the tip 38 of the crimping piece 32, and at this portion, the conductive terminal 30 and the copper core wire are in contact. 22 is electrically connected.

上述した実施形態では、銅露出端部２６のすべてをアルミニウム露出端部１６の収容空間に挿入せず、銅露出端部２６の少なくとも一部を外部に露出させた上で導電端子３０による圧着を行った（図３参照）が、図６に示すように、銅露出端部２６のほぼすべてをアルミニウム露出端部１６に挿入することも可能である。この場合には、図２に示す導電端子３０に代えて、図６に示すような導電端子１３０を用いることが好ましい。 In the above-described embodiment, not all of the copper exposed end portion 26 is inserted into the accommodating space of the aluminum exposed end portion 16, and at least a part of the copper exposed end portion 26 is exposed to the outside, and then crimping by the conductive terminal 30 is performed. Although done (see FIG. 3), it is also possible to insert substantially all of the copper exposed end 26 into the aluminum exposed end 16 as shown in FIG. In this case, it is preferable to use a conductive terminal 130 as shown in FIG. 6 instead of the conductive terminal 30 shown in FIG.

この導電端子１３０は、導電端子３０と同様に、略Ｕ字状の断面を長手方向に延ばした外形を有している。導電端子１３０は、底部１３１と、底部１３１の両側から上方に延びる２対の加締片１３２Ａ，１３２Ｂとを含んでいる。加締片１３２Ａと加締片１３２Ｂとは、切欠き１３７を挟んで長手方向に隣接して形成されている。アルミニウム芯線１２と電気的に接続される第１の導通部３３は加締片１３２Ａにより構成され、銅芯線２２と電気的に接続される第２の導通部３４は加締片１３２Ｂにより構成されている。第１の導通部３３の内面１３５には、長手方向と垂直な方向に延びるセレーション３６が形成されている。 Similar to the conductive terminal 30, the conductive terminal 130 has an outer shape obtained by extending a substantially U-shaped cross section in the longitudinal direction. The conductive terminal 130 includes a bottom portion 131 and two pairs of crimping pieces 132A and 132B extending upward from both sides of the bottom portion 131. The caulking piece 132A and the caulking piece 132B are formed adjacent to each other in the longitudinal direction with the notch 137 interposed therebetween. The first conductive portion 33 electrically connected to the aluminum core wire 12 is constituted by a crimping piece 132A, and the second conductive portion 34 electrically connected to the copper core wire 22 is constituted by a crimping piece 132B. Yes. A serration 36 extending in a direction perpendicular to the longitudinal direction is formed on the inner surface 135 of the first conducting portion 33.

このように、図６に示す導電端子１３０では、第１の導通部３３と第２の導通部３４とがそれぞれ別個の加締片１３２Ａ，１３２Ｂによって構成されているので、第１の導通部３３（加締片１３２Ａ）を加締める際に加締片１３２Ａに加える力と第２の導通部３４（加締片１３２Ｂ）を加締める際に加締片１３２Ｂに加える力とを変えることができる。したがって、加締片１３２Ｂを加締片１３２Ａよりも強い力で加締めることによって、図６に示すように、銅露出端部２６のほぼすべてがアルミニウム露出端部１６に覆われていても、図７に示すように、強い力で加締めた加締片１３２Ｂの先端１３８を銅芯線２２に接触させることができ、この部分で導電端子３０と銅芯線２２とを電気的に接続することができる。 As described above, in the conductive terminal 130 shown in FIG. 6, the first conductive portion 33 and the second conductive portion 34 are configured by the separate crimping pieces 132 </ b> A and 132 </ b> B, respectively. The force applied to the caulking piece 132A when the caulking piece 132A is caulked and the force applied to the caulking piece 132B when caulking the second conducting portion 34 (caulking piece 132B) can be changed. Therefore, even if almost all of the copper exposed end portion 26 is covered with the aluminum exposed end portion 16 as shown in FIG. 6 by caulking the caulking piece 132B with a force stronger than that of the caulking piece 132A, FIG. 7, the tip 138 of the crimping piece 132 </ b> B crimped with a strong force can be brought into contact with the copper core wire 22, and the conductive terminal 30 and the copper core wire 22 can be electrically connected at this portion. .

これまで本発明の好ましい実施形態について説明したが、本発明は上述の実施形態に限定されず、その技術的思想の範囲内において種々異なる形態にて実施されてよいことは言うまでもない。 The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and it goes without saying that the present invention may be implemented in various forms within the scope of the technical idea.

１電線
１０アルミニウム電線部
１２アルミニウム芯線
１４被覆
１６アルミニウム露出端部
２０銅電線部
２２銅芯線
２４被覆
２６銅露出端部
３０導電端子
３１底部
３２加締片
３３第１の導通部
３４第２の導通部
３６セレーション
１３０導電端子
１３２Ａ，１３２Ｂ加締片
１３７切欠き DESCRIPTION OF SYMBOLS 1 Electric wire 10 Aluminum electric wire part 12 Aluminum core wire 14 Covering 16 Aluminum exposed end part 20 Copper electric wire part 22 Copper core wire 24 Covering 26 Copper exposed end part 30 Conductive terminal 31 Bottom part 32 Clamping piece 33 1st conduction | electrical_connection part 34 2nd conduction | electrical_connection Part 36 Serration 130 Conductive terminals 132A, 132B Clamping piece 137 Notch

Claims

An aluminum wire portion including an aluminum conductor having a braided structure;
A copper wire portion including a copper conductor;
The aluminum conductor is crimped to an aluminum exposed end where the aluminum conductor is exposed at one end of the aluminum electric wire and a copper exposed end where the copper conductor is exposed at one end of the copper electric wire. And a conductive terminal electrically connecting between the copper conductor,
At least a part of the copper exposed end is housed in a cylindrical housing space formed by spreading the braided structure of the aluminum conductor at the aluminum exposed end from the center to the outside.
The conductive terminal is
A first conductive portion that is crimped to the outside of the aluminum exposed end and is electrically connected to the aluminum conductor, the first conductive portion having a serration that contacts the outer periphery of the aluminum exposed end;
A second conducting portion that is crimped to the outside of the copper exposed end portion and electrically connected to the copper conductor;
Electrical wire.

The electric wire according to claim 1, wherein at least a part of the second conductive portion of the conductive terminal is in direct contact with the copper exposed end portion of the copper electric wire portion.

The electric wire according to claim 1 or 2, wherein the first conductive portion and the second conductive portion of the conductive terminal are configured by separate crimping pieces.