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WO2020105153A1 - Terminal-equipped electric wire - Google Patents

Terminal-equipped electric wire

Info

Publication number
WO2020105153A1
WO2020105153A1 PCT/JP2018/043047 JP2018043047W WO2020105153A1 WO 2020105153 A1 WO2020105153 A1 WO 2020105153A1 JP 2018043047 W JP2018043047 W JP 2018043047W WO 2020105153 A1 WO2020105153 A1 WO 2020105153A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
core wire
anticorrosion
electric wire
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/043047
Other languages
French (fr)
Japanese (ja)
Inventor
宏介 蓮井
能章 山野
須藤　博
望月　泰志
崇康 杉原
美里 上木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Wiring Systems Ltd, AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to PCT/JP2018/043047 priority Critical patent/WO2020105153A1/en
Publication of WO2020105153A1 publication Critical patent/WO2020105153A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01R4/70—Insulation of connections

Definitions

  • the present invention relates to an electric wire with a terminal.
  • Patent Document 1 in order to prevent galvanic corrosion between the terminal and the electric wire made of different metals from each other, an anticorrosion part (or part of the surface of the terminal to which the electric wire is connected is In Patent Document 1, a conductive anticorrosion layer) is provided.
  • Patent Document 1 discloses that the anticorrosion portion is provided on the whole or a part of the surface of the terminal to which the electric wire is connected, the minimum anticorrosion portion that can preferably obtain the effect of suppressing galvanic corrosion. There is no specific disclosure of the range, and there is still room for improvement in this respect.
  • the present invention has been made to solve the above problems, and an object thereof is to provide an electric wire with a terminal that can exhibit a suitable anticorrosion effect by an anticorrosion portion.
  • An electric wire with a terminal to solve the above problems, an electric wire having a core wire made of a metal material, made of a metal material of a different type from the core wire, a terminal connected to the tip portion of the core wire, the terminal and the core wire.
  • the top view of the electric wire with a terminal of embodiment. 2 is a sectional view taken along line 2-2 in FIG.
  • (A)-(d) Explanatory drawing for demonstrating the aspect of the test for investigating a corrosion prevention range.
  • (A) (b) The graph which shows a test result. The graph which shows the relationship between the distance from the periphery of the connection part of the surface of a terminal and a core wire, and a corrosion current ratio based on theoretical calculation. Explanatory drawing for demonstrating the evaluation result about the suitable range of an anticorrosion part.
  • the electric wire with terminal 10 is used for a wire harness for an automobile, and more specifically, for example, used in an area outside the vehicle interior (an area exposed to water) such as an engine room. It is what is done.
  • the terminal-attached electric wire 10 was connected by ultrasonic welding to a thick electric wire 13 in which a core wire 12 is covered with an insulating coating 11 made of an insulator, and a tip end of the core wire 12 exposed from the insulating coating 11. And a terminal 14.
  • the core wire 12 of the thick electric wire 13 is a stranded wire made of a plurality of element wires made of aluminum or an aluminum alloy. Further, the core wire 12 has a cross-sectional area perpendicular to the length direction set to 3 [mm 2 ] or more.
  • the terminal 14 of the present embodiment is made of a copper or copper alloy metal plate material having a rectangular shape in a plan view. Further, the terminal 14 is made of a solid material whose surface is not plated.
  • the tip portion of the core wire 12 is connected to the first main surface 14a of the surface of the terminal 14 by ultrasonic welding. The tip portion of the core wire 12 is connected to the first main surface 14a in a state that its length direction is parallel to the first main surface 14a.
  • the terminal-attached electric wire 10 includes a surface of an exposed portion of the core wire 12 from the insulating coating 11, a peripheral edge E of a connecting portion (boundary portion) between the first main surface 14 a of the terminal 14 and the core wire 12, and a first terminal 14 of the terminal 14.
  • the anticorrosion portion 15 is provided so as to extend over a part of the first main surface 14a.
  • the anticorrosion portion 15 of the present embodiment is provided so as to extend over a part of the insulating coating 11.
  • the anticorrosion portion 15 of the present embodiment is formed of a water repellent film formed by, for example, spray coating a water repellent in a state where the core wire 12 is connected to the terminal 14.
  • the anticorrosion portion 15 applied to the first main surface 14a of the terminal 14 is provided so as to surround the peripheral edge E of the connecting portion (boundary portion) between the first main surface 14a and the core wire 12. Further, the coating range of the anticorrosion portion 15 on the first main surface 14a of the terminal 14 is set such that the width dimension W from the peripheral edge E is 3 [mm] to 5 [mm]. That is, the anticorrosion portion 15 is provided in the first main surface 14a of the terminal 14 in a region where the creepage distance from the peripheral edge E is 3 [mm] to 5 [mm].
  • the terminal 14 has a connection portion 17 that is fastened and fixed to a mating terminal (not shown) by a metal bolt B in the non-corrosion prevention portion 16.
  • the distance between the bolt B and the core wire 12 in the plate surface direction of the terminal 14 is preferably set to 3 [mm] or more, more preferably 4 [mm] or more. .
  • the voltage drop (resistance value) [mV / A] of the core wire 12 and the cross-section reduction rate [%] of the core wire 12 was measured.
  • the above-described measurement was performed with four patterns having different sizes of the masking region Am on the first main surface 14a of the terminal 14, as shown in FIGS. 4 (a) to 4 (d). The larger the values of the voltage drop of the core wire 12 and the cross-section reduction rate of the core wire 12, the greater the degree of galvanic corrosion.
  • an area not masked that is, the first main surface 14a of the terminal 14 around the periphery E of the connection portion with the core wire 12, that is, An exposed region As in which the first main surface 14a is exposed is provided.
  • An area other than the exposed area As on the first main surface 14a of the terminal 14 is a masking area Am made of resin paint such as paint.
  • the distance (width dimension Ws) of the exposed area As from the peripheral edge E is 1 [mm].
  • the distance (width dimension Ws) of the exposed region As from the peripheral edge E is 2 [mm].
  • the distance (width dimension Ws) of the exposed region As from the peripheral edge E is 3 [mm].
  • the distance (width Ws) of the exposed area As from the peripheral edge E is 4 [mm] (no masking area Am).
  • the graph of FIG. 5A shows the voltage drop (resistance value) [mV / A] of the core wire 12 in each of the above patterns. As shown in the figure, the voltage drop is the smallest in the pattern in which the exposed region As is 1 [mm]. The voltage drop increases as the exposed area As increases to 3 [mm], and the voltage drop is almost the same between the pattern in which the exposed area As is 3 [mm] and the pattern in which the exposed area As is 4 [mm].
  • the graph in FIG. 5B shows the cross-sectional reduction rate [%] of the core wire 12 in each of the above patterns.
  • the reduction rate of the cross section is the smallest in the pattern in which the exposed region As is 1 [mm].
  • the cross-section reduction rate increased as the exposed area As increased to 3 [mm]
  • the cross-section reduction rate was almost the same between the pattern in which the exposed area As was 3 [mm] and the pattern in which the exposed area As was 4 [mm].
  • the graph of FIG. 6 shows the relationship between the distance from the peripheral edge E and the corrosion current ratio in the state in which 5 wt% of salt water is sprayed to form a water film on the surface of the terminal 14 and the surface of the core wire 12, which is derived by theoretical calculation. Shows the relationship.
  • the larger the corrosion current ratio the greater the degree of galvanic corrosion.
  • the corrosion current ratio decreases, and when the distance from the peripheral edge E is 2 [mm], the corrosion current ratio decreases to about 30%.
  • the corrosion current ratio decreases to about 10%
  • the corrosion current ratio decreases to about 4%
  • the corrosion current ratio becomes almost zero.
  • FIG. 7 shows a result of evaluating an appropriate range (width dimension W) of the anticorrosion portion 15 in the electric wire with a terminal 10 based on the measurement shown in FIGS. 5A and 5B and the theoretical calculation shown in FIG.
  • width dimension W of the anticorrosion portion 15 is at least 3 [mm]
  • a desired anticorrosion effect is obtained, and even when the width dimension W of the anticorrosion portion 15 is increased to 5 [mm] or more, the anticorrosion effect is increased. There is no change in the effect.
  • the width dimension W of the anticorrosion portion 15 is 6 [mm], it is disadvantageous in terms of cost, and it is desirable that the width dimension W of the anticorrosion portion 15 be 5 [mm] or less.
  • the present inventors confirmed that the appropriate width dimension W of the anticorrosion portion 15 is 3 [mm] to 5 [mm], and further, the width dimension W of the anticorrosion portion 15 is It has been confirmed that the setting of 4 [mm] is the most appropriate setting that makes both anticorrosion evaluation and cost evaluation compatible.
  • An electric wire 10 with a terminal includes a thick electric wire 13 having a core wire 12 made of aluminum or an aluminum alloy, a terminal 14 made of copper or a copper alloy and connected to a tip end portion of the core wire 12, a terminal 14, and a core wire 12.
  • the surface of the terminal 14 is covered in the periphery of the connection portion with and the anticorrosion portion 15 is provided for suppressing galvanic corrosion that may occur between the terminal 14 and the core wire 12.
  • the anticorrosion portion 15 is provided over a region from the peripheral edge E of the connection portion with the core wire 12 on the surface of the terminal 14 to a predetermined creepage distance, and the predetermined creepage distance is set to 3 [mm] or more. .
  • a suitable anticorrosion effect by the anticorrosion portion 15 can be obtained (see FIGS. 5 to 7).
  • the width dimension W (predetermined creepage distance) of the anticorrosion portion 15 is set within the range of 3 [mm] to 5 [mm].
  • the region of the surface of the terminal 14 other than the portion covered by the anticorrosion portion 15 is formed of the noncorrosion portion 16 that is not subjected to the anticorrosion treatment (that is, the portion where the solid copper is exposed). According to this aspect, it is possible to obtain a suitable anticorrosion effect by the anticorrosion portion 15 while contributing to cost reduction by reducing the amount of material used for the anticorrosion portion 15 (see FIGS. 5 to 7). Furthermore, by setting the width dimension W (predetermined creeping distance) of the anticorrosion portion 15 to 4 [mm], the anticorrosion surface and the cost surface are more balanced.
  • the anticorrosion part 15 is a water-repellent film, the water attached to the anticorrosion part 15 can flow to the non-corrosion preventive part 16 without being retained in the anticorrosion part 15. As a result, galvanic corrosion that occurs between the core wire 12 and the terminal 14 due to water adhesion can be suppressed.
  • the anticorrosion part 15 is the water repellent film, but the invention is not limited to this. If an effect of suppressing galvanic corrosion that may occur between the terminal 14 and the core wire 12 can be obtained, Other than the water repellent film can be changed.
  • the anticorrosion portion 15 may be an insulating film formed by spray coating an insulating agent.
  • the anticorrosion portion 15 may be a cover member made of a resin molded product, which is attached to the tip end portions of the terminal 14 and the core wire 12.
  • the anticorrosion portion 15 may be formed by metal plating.
  • the metal plating material is preferably nickel or the like, which has a smaller ionization tendency than aluminum forming the core wire 12.
  • the anticorrosion portion 15 is plated with metal, it is preferable to partially plate the terminal 14 to which the core wire 12 is not connected.
  • the terminal 14 is made of solid copper, but in addition to this, for example, a metal material (for example, silver) that can be connected to the core wire 12 by ultrasonic welding is plated on the entire surface of the terminal 14. May be In this configuration, galvanic corrosion occurs between the silver plating on the surface of the terminal 14 and the core wire 12. Therefore, it is desirable to configure the anticorrosion portion 15 of the above embodiment from the silver plating. Further, in this case, a region other than the anticorrosion portion 15 where the silver plating is exposed becomes the non-corrosion portion 16 on the surface of the terminal 14.
  • a metal material for example, silver
  • the anticorrosion portion 15 of the above-described embodiment is configured only on the first main surface 14a on the surface of the terminal 14, the invention is not limited to this.
  • the size of the first main surface 14a of the terminal 14 and the thickness (width of the core wire 12 It is desirable to appropriately adjust up to which surface of the terminal 14 the anticorrosion portion 15 is to be provided. For example, when the distance from the peripheral edge E to the end of the terminal 14 is less than 3 [mm] in the width direction of the terminal 14 (left-right direction in FIG. 1), the creeping distance from the peripheral edge E is 4 [mm].
  • the above points are located on the end face in the width direction of the terminal 14 (or the second main surface 14b). Therefore, it is desirable to configure the anticorrosion portion 15 over the region from the peripheral edge E to the point on the end surface of the terminal 14 (or the second main surface 14b).
  • the width dimension W (creeping distance from the peripheral edge E) of the anticorrosion portion 15 is set within the range of 3 [mm] to 5 [mm], but not limited to this, the surface of the terminal 14 is not limited to this.
  • the width dimension W of the anticorrosion portion 15 may be set to 5 [mm] or more in the range where there is the non-corrosion prevention portion 16 that is not covered by the anticorrosion portion 15 and is not subjected to the anticorrosion treatment.
  • the anticorrosion portion 15 is made of an insulating film
  • the surface of the connection portion 17 is made of the noncorrosion portion 16 in order to achieve good electrical connection between the mating terminal and the connection portion 17 of the terminal 14. Preferably.
  • the relative sizes of the terminal 14 and the core wire 12 can be appropriately changed. Even when the relative sizes of the terminal 14 and the core wire 12 are changed, the preferable range of the width dimension W of the anticorrosion portion 15 does not change.
  • the terminal 14 is made of copper or a copper alloy and the core wire 12 is made of aluminum or an aluminum alloy.
  • the metal materials of the terminal 14 and the core wire 12 may be different kinds of metal materials. Even when the metal material of the terminal 14 and the core wire 12 is changed from the above embodiment, the preferable range of the width W of the anticorrosion portion 15 does not change.
  • connection structure with the terminal 14 in the thick electric wire 13 whose core wire 12 has a cross-sectional area of 3 [mm ⁇ 2 >] or more it does not specifically limit to this and the cross-sectional area of the core wire 12 is 3 [mm. It may be applied to a connection structure between an electric wire of less than 2 ] and the terminal 14.
  • connection mode between the core wire 12 and the terminal 14 may be changed to, for example, crimping along with the change in the cross-sectional area of the core wire 12.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

A terminal-equipped electric wire 10 is provided with: a thick electric wire 13 having a core wire 12 made of aluminum or an aluminum alloy; a terminal 14 made of copper or a copper alloy and connected to the front end of the core wire 12; and an anticorrosion section 15 which, around the portion where the terminal 14 and the core wire 12 are connected, covers the surface of the terminal 14, and which prevents galvanic corrosion which can occur between the terminal 14 and the core wire 12. The anticorrosion section 15 is provided in a region extending a predetermined creeping distance from the peripheral edge E of a portion of the surface of the terminal 14, the portion being connected to the core wire 12, and the predetermined creeping distance is set to be 3 (mm) or greater. The region of the surface of the terminal 14 other than the portion covered with the anticorrosion section 15 is configured as a non-anticorrosion section 16 not subjected to an anticorrosion treatment.

Description

端子付き電線Wire with terminal

　本発明は、端子付き電線に関するものである。 The present invention relates to an electric wire with a terminal.

　従来、例えば特許文献１に示す端子付き電線では、互いに異種金属からなる端子と電線との間のガルバニック腐食を防止するために、端子における電線が接続される面の全体または一部に防食部（特許文献１中、導電防食層）を設けている。 Conventionally, for example, in the electric wire with a terminal shown in Patent Document 1, in order to prevent galvanic corrosion between the terminal and the electric wire made of different metals from each other, an anticorrosion part (or part of the surface of the terminal to which the electric wire is connected is In Patent Document 1, a conductive anticorrosion layer) is provided.

特開２０１１－１６５６１８号公報JP, 2011-165618, A

　上記特許文献１では、端子における電線が接続される面の全体または一部に防食部を設ける点について開示されているものの、ガルバニック腐食の抑制効果を好適に得ることができる最低限の防食部の範囲については何ら具体的に開示されておらず、この点においてなお改善の余地があった。 Although the above-mentioned Patent Document 1 discloses that the anticorrosion portion is provided on the whole or a part of the surface of the terminal to which the electric wire is connected, the minimum anticorrosion portion that can preferably obtain the effect of suppressing galvanic corrosion. There is no specific disclosure of the range, and there is still room for improvement in this respect.

　本発明は、上記課題を解決するためになされたものであって、その目的は、防食部による好適な防食効果を発揮できる端子付き電線を提供することにある。 The present invention has been made to solve the above problems, and an object thereof is to provide an electric wire with a terminal that can exhibit a suitable anticorrosion effect by an anticorrosion portion.

　上記課題を解決する端子付き電線は、金属材料からなる芯線を有する電線と、前記芯線とは異なる種類の金属材料からなり、前記芯線の先端部に接続された端子と、前記端子と前記芯線との接続部分の周囲における前記端子の表面を覆い、前記端子と前記芯線との間で生じうるガルバニック腐食を抑制するための防食部とを備え、前記防食部は、前記端子の表面における前記芯線との接続部分の周縁から所定の沿面距離までの領域に亘って設けられ、該所定の沿面距離が３［ｍｍ］以上に設定され、前記端子の表面には、前記防食部に覆われていない部分であって防食処理が施されていない非防食部が設けられている。 An electric wire with a terminal to solve the above problems, an electric wire having a core wire made of a metal material, made of a metal material of a different type from the core wire, a terminal connected to the tip portion of the core wire, the terminal and the core wire. The surface of the terminal in the periphery of the connection portion of, and a corrosion prevention portion for suppressing galvanic corrosion that may occur between the terminal and the core wire, the corrosion protection portion, the core wire on the surface of the terminal and Is provided over the region from the peripheral edge of the connecting portion to a predetermined creepage distance, the predetermined creepage distance is set to 3 [mm] or more, and the surface of the terminal is not covered with the anticorrosion portion. Therefore, a non-corrosion preventive portion which is not subjected to anti-corrosion treatment is provided.

　本発明の端子付き電線によれば、防食部による好適な防食効果を発揮できる。 According to the electric wire with terminal of the present invention, a suitable anticorrosion effect by the anticorrosion part can be exhibited.

実施形態の端子付き電線の平面図。The top view of the electric wire with a terminal of embodiment. 図１における２－２線断面図。2 is a sectional view taken along line 2-2 in FIG. 同形態の端子付き電線の側面図。The side view of the electric wire with a terminal of the same form. （ａ）～（ｄ）防食範囲調査のための試験の態様を説明するための説明図。(A)-(d) Explanatory drawing for demonstrating the aspect of the test for investigating a corrosion prevention range. （ａ）（ｂ）試験結果を示すグラフ。(A) (b) The graph which shows a test result. 理論計算に基づく、端子の表面と芯線との接続部分の周縁からの距離と腐食電流比との関係を示すグラフ。The graph which shows the relationship between the distance from the periphery of the connection part of the surface of a terminal and a core wire, and a corrosion current ratio based on theoretical calculation. 防食部の適切な範囲についての評価結果を説明するための説明図。Explanatory drawing for demonstrating the evaluation result about the suitable range of an anticorrosion part.

　以下、端子付き電線の一実施形態について説明する。なお、図面では、説明の便宜上、構成の一部を誇張又は簡略化して示す場合がある。また、各部分の寸法比率についても、実際と異なる場合がある。 Hereinafter, an embodiment of an electric wire with a terminal will be described. In the drawings, for convenience of description, a part of the configuration may be exaggerated or simplified. Also, the dimensional ratio of each part may be different from the actual one.

　図１～図３に示す本実施形態の端子付き電線１０は、自動車用ワイヤハーネスに用いられるものであり、さらに具体的には、例えばエンジンルームなどの車室外の領域（被水領域）に用いられるものである。端子付き電線１０は、絶縁体よりなる絶縁被覆１１にて芯線１２が覆われてなる太物電線１３と、絶縁被覆１１から露出された芯線１２の先端部に対して超音波溶接により接続された端子１４とを備えている。 The electric wire with terminal 10 according to the present embodiment shown in FIGS. 1 to 3 is used for a wire harness for an automobile, and more specifically, for example, used in an area outside the vehicle interior (an area exposed to water) such as an engine room. It is what is done. The terminal-attached electric wire 10 was connected by ultrasonic welding to a thick electric wire 13 in which a core wire 12 is covered with an insulating coating 11 made of an insulator, and a tip end of the core wire 12 exposed from the insulating coating 11. And a terminal 14.

　太物電線１３の芯線１２は、アルミニウムまたはアルミニウム合金からなる複数の素線からなる撚り線である。また、芯線１２は長さ方向と垂直な断面積が３［ｍｍ２］以上に設定されている。 The core wire 12 of the thick electric wire 13 is a stranded wire made of a plurality of element wires made of aluminum or an aluminum alloy. Further, the core wire 12 has a cross-sectional area perpendicular to the length direction set to 3 [mm 2 ] or more.

　本実施形態の端子１４は、平面視で長方形状をなす銅または銅合金の金属板材からなる。また、端子１４は表面にめっきが施されていない無垢材としている。芯線１２の先端部は、端子１４の表面のうちの第１主面１４ａに超音波溶接にて接続されている。芯線１２の先端部は、その長さ方向が第１主面１４ａと平行となる状態で該第１主面１４ａに接続されている。 The terminal 14 of the present embodiment is made of a copper or copper alloy metal plate material having a rectangular shape in a plan view. Further, the terminal 14 is made of a solid material whose surface is not plated. The tip portion of the core wire 12 is connected to the first main surface 14a of the surface of the terminal 14 by ultrasonic welding. The tip portion of the core wire 12 is connected to the first main surface 14a in a state that its length direction is parallel to the first main surface 14a.

　端子付き電線１０は、芯線１２の先端部における絶縁被覆１１からの露出部表面と、端子１４の第１主面１４ａと芯線１２との接続部分（境界部分）の周縁Ｅと、端子１４の第１主面１４ａの一部とに跨がって設けられた防食部１５を備えている。なお、本実施形態の防食部１５は、絶縁被覆１１の一部にも跨がって設けられている。また、本実施形態の防食部１５は、端子１４に芯線１２が接続された状態において、撥水剤を例えばスプレー塗布して形成した撥水膜よりなる。 The terminal-attached electric wire 10 includes a surface of an exposed portion of the core wire 12 from the insulating coating 11, a peripheral edge E of a connecting portion (boundary portion) between the first main surface 14 a of the terminal 14 and the core wire 12, and a first terminal 14 of the terminal 14. The anticorrosion portion 15 is provided so as to extend over a part of the first main surface 14a. In addition, the anticorrosion portion 15 of the present embodiment is provided so as to extend over a part of the insulating coating 11. Further, the anticorrosion portion 15 of the present embodiment is formed of a water repellent film formed by, for example, spray coating a water repellent in a state where the core wire 12 is connected to the terminal 14.

　端子１４の第１主面１４ａに塗布された防食部１５は、該第１主面１４ａと芯線１２との接続部分（境界部分）の周縁Ｅを囲うように設けられている。また、端子１４の第１主面１４ａにおける防食部１５の塗布範囲は、前記周縁Ｅからの幅寸法Ｗが３［ｍｍ］～５［ｍｍ］に設定されている。すなわち、防食部１５は、端子１４の第１主面１４ａにおいて、前記周縁Ｅからの沿面距離が３［ｍｍ］～５［ｍｍ］となる領域に設けられている。そして、端子１４の表面（すなわち、第１主面１４ａ、第１主面１４ａの裏側の第２主面１４ｂ、及び四方の端面）における防食部１５に覆われた部分以外の領域は、防食処理が施されていない非防食部１６で構成されている。端子１４は、非防食部１６において、図示しない相手側端子に対し金属製のボルトＢにて締結固定される接続部１７を有している。なお、端子１４の板面方向におけるボルトＢと芯線１２との間の間隔は３［ｍｍ］以上に設定されるのが好ましく、さらに言えば、４［ｍｍ］以上に設定されるのがより好ましい。 The anticorrosion portion 15 applied to the first main surface 14a of the terminal 14 is provided so as to surround the peripheral edge E of the connecting portion (boundary portion) between the first main surface 14a and the core wire 12. Further, the coating range of the anticorrosion portion 15 on the first main surface 14a of the terminal 14 is set such that the width dimension W from the peripheral edge E is 3 [mm] to 5 [mm]. That is, the anticorrosion portion 15 is provided in the first main surface 14a of the terminal 14 in a region where the creepage distance from the peripheral edge E is 3 [mm] to 5 [mm]. Areas other than the portion covered by the anticorrosion portion 15 on the surface of the terminal 14 (that is, the first main surface 14a, the second main surface 14b on the back side of the first main surface 14a, and the four end surfaces) are anticorrosive. The non-corrosion preventive portion 16 is not provided. The terminal 14 has a connection portion 17 that is fastened and fixed to a mating terminal (not shown) by a metal bolt B in the non-corrosion prevention portion 16. The distance between the bolt B and the core wire 12 in the plate surface direction of the terminal 14 is preferably set to 3 [mm] or more, more preferably 4 [mm] or more. .

　［防食範囲調査のための試験方法］
　上記した防食部１５の適切な範囲を調査するために行った試験について、図４（ａ）～（ｄ）及び図５に従って説明する。 [Test method for investigation of anticorrosion range]
The test conducted for investigating the appropriate range of the anticorrosion portion 15 will be described with reference to FIGS. 4 (a) to 4 (d) and FIG.

　５ｗｔ％の塩水を噴霧して端子１４の表面及び芯線１２の表面に水膜を形成した後、芯線１２の電圧降下（抵抗値）［ｍＶ／Ａ］、及び芯線１２の断面減少率［％］を測定した。また、上記の測定を、図４（ａ）～（ｄ）に示すように、端子１４の第１主面１４ａにおけるマスキング領域Ａｍの大きさが異なる４つのパターンで行った。なお、芯線１２の電圧降下、及び芯線１２の断面減少率は、それらの値が大きいほどガルバニック腐食の度合いも大きくなる。 After spraying 5 wt% of salt water to form a water film on the surface of the terminal 14 and the surface of the core wire 12, the voltage drop (resistance value) [mV / A] of the core wire 12 and the cross-section reduction rate [%] of the core wire 12 Was measured. In addition, the above-described measurement was performed with four patterns having different sizes of the masking region Am on the first main surface 14a of the terminal 14, as shown in FIGS. 4 (a) to 4 (d). The larger the values of the voltage drop of the core wire 12 and the cross-section reduction rate of the core wire 12, the greater the degree of galvanic corrosion.

　図４（ａ）～（ｄ）に示すように、端子１４の第１主面１４ａにおける芯線１２との接続部分の周縁Ｅの周囲には、マスキングを施していない領域、すなわち、端子１４の第１主面１４ａが露出された露出領域Ａｓが設けられている。また、端子１４の第１主面１４ａにおける露出領域Ａｓ以外の領域は、例えばペンキなどの樹脂塗料からなるマスキング領域Ａｍとしている。 As shown in FIGS. 4A to 4D, an area not masked, that is, the first main surface 14a of the terminal 14 around the periphery E of the connection portion with the core wire 12, that is, An exposed region As in which the first main surface 14a is exposed is provided. An area other than the exposed area As on the first main surface 14a of the terminal 14 is a masking area Am made of resin paint such as paint.

　ここで、図４（ａ）のパターンは、露出領域Ａｓの前記周縁Ｅからの距離（幅寸法Ｗｓ）を１［ｍｍ］としている。図４（ｂ）のパターンは、露出領域Ａｓの前記周縁Ｅからの距離（幅寸法Ｗｓ）を２［ｍｍ］としている。図４（ｃ）のパターンは、露出領域Ａｓの前記周縁Ｅからの距離（幅寸法Ｗｓ）を３［ｍｍ］としている。そして、図４（ｃ）のパターンは、露出領域Ａｓの前記周縁Ｅからの距離（幅寸法Ｗｓ）を４［ｍｍ］としている（マスキング領域Ａｍ無し）。 Here, in the pattern of FIG. 4A, the distance (width dimension Ws) of the exposed area As from the peripheral edge E is 1 [mm]. In the pattern of FIG. 4B, the distance (width dimension Ws) of the exposed region As from the peripheral edge E is 2 [mm]. In the pattern of FIG. 4C, the distance (width dimension Ws) of the exposed region As from the peripheral edge E is 3 [mm]. In the pattern of FIG. 4C, the distance (width Ws) of the exposed area As from the peripheral edge E is 4 [mm] (no masking area Am).

　図５（ａ）のグラフは、上記各パターンにおける芯線１２の電圧降下（抵抗値）［ｍＶ／Ａ］を示している。同図に示すように、露出領域Ａｓが１［ｍｍ］のパターンで電圧降下が最も小さい。そして、露出領域Ａｓが３［ｍｍ］まで増えるにつれて電圧降下が増え、露出領域Ａｓが３［ｍｍ］のパターンと４［ｍｍ］のパターンでは、電圧降下がほぼ変わらない結果となった。 The graph of FIG. 5A shows the voltage drop (resistance value) [mV / A] of the core wire 12 in each of the above patterns. As shown in the figure, the voltage drop is the smallest in the pattern in which the exposed region As is 1 [mm]. The voltage drop increases as the exposed area As increases to 3 [mm], and the voltage drop is almost the same between the pattern in which the exposed area As is 3 [mm] and the pattern in which the exposed area As is 4 [mm].

　図５（ｂ）のグラフは、上記各パターンにおける芯線１２の断面減少率［％］を示している。同図に示すように、露出領域Ａｓが１［ｍｍ］のパターンで断面減少率が最も小さい。そして、露出領域Ａｓが３［ｍｍ］まで増えるにつれて断面減少率が増え、露出領域Ａｓが３［ｍｍ］のパターンと４［ｍｍ］のパターンでは、断面減少率がほぼ変わらない結果となった。 The graph in FIG. 5B shows the cross-sectional reduction rate [%] of the core wire 12 in each of the above patterns. As shown in the figure, the reduction rate of the cross section is the smallest in the pattern in which the exposed region As is 1 [mm]. Then, the cross-section reduction rate increased as the exposed area As increased to 3 [mm], and the cross-section reduction rate was almost the same between the pattern in which the exposed area As was 3 [mm] and the pattern in which the exposed area As was 4 [mm].

　すなわち、上記の試験結果から、防食部１５の前記周縁Ｅからの幅寸法Ｗが少なくとも３［ｍｍ］あれば、端子１４と芯線１２との間で生じうるガルバニック腐食を防食部１５によって効果的に抑制できると言える。 That is, from the above test results, if the width dimension W of the anticorrosion portion 15 from the peripheral edge E is at least 3 [mm], galvanic corrosion that may occur between the terminal 14 and the core wire 12 is effectively caused by the anticorrosion portion 15. It can be said that it can be suppressed.

　図６のグラフは、理論計算によって導き出した、５ｗｔ％の塩水を噴霧して端子１４の表面及び芯線１２の表面に水膜を形成した状態における、前記周縁Ｅからの距離と腐食電流比との関係を示している。なお、腐食電流比が大きいほどガルバニック腐食の度合いも大きくなる。同図に示すように、周縁Ｅからの距離が０～１［ｍｍ］までは範囲では、腐食電流比の減衰はほぼ無い。周縁Ｅからの距離が１［ｍｍ］よりも大きくなると腐食電流比が減少し、周縁Ｅからの距離が２［ｍｍ］で腐食電流比が約３０％まで減少する。さらに、周縁Ｅからの距離が３［ｍｍ］で腐食電流比が約１０％まで減少し、周縁Ｅからの距離が４［ｍｍ］で腐食電流比が約４％まで減少する。そして、周縁Ｅからの距離が５［ｍｍ］以上では、腐食電流比はほぼ０となる。 The graph of FIG. 6 shows the relationship between the distance from the peripheral edge E and the corrosion current ratio in the state in which 5 wt% of salt water is sprayed to form a water film on the surface of the terminal 14 and the surface of the core wire 12, which is derived by theoretical calculation. Shows the relationship. The larger the corrosion current ratio, the greater the degree of galvanic corrosion. As shown in the figure, there is almost no decay of the corrosion current ratio in the range of 0 to 1 [mm] from the peripheral edge E. When the distance from the peripheral edge E is larger than 1 [mm], the corrosion current ratio decreases, and when the distance from the peripheral edge E is 2 [mm], the corrosion current ratio decreases to about 30%. Further, when the distance from the peripheral edge E is 3 [mm], the corrosion current ratio decreases to about 10%, and when the distance from the peripheral edge E is 4 [mm], the corrosion current ratio decreases to about 4%. Then, when the distance from the peripheral edge E is 5 [mm] or more, the corrosion current ratio becomes almost zero.

　図５（ａ）（ｂ）に示す測定、及び図６に示す理論計算に基づき、上記端子付き電線１０における防食部１５の適切な範囲（幅寸法Ｗ）を評価した結果を図７に示す。図７に示すように、防食部１５の幅寸法Ｗが最低でも３［ｍｍ］あれば所望の防食効果が得られ、防食部１５の幅寸法Ｗを５［ｍｍ］以上で大きくしても防食効果に変化は無い。また、防食部１５の幅寸法Ｗを６［ｍｍ］とするとコスト面で不利であり、防食部１５の幅寸法Ｗを５［ｍｍ］以下とすることが望ましい。これらのことを鑑みて、本発明者らは、防食部１５の適切な幅寸法Ｗを３［ｍｍ］～５［ｍｍ］であることを確認し、さらには、防食部１５の幅寸法Ｗを４［ｍｍ］とすると、防食評価とコスト評価の両立させる最も適切な設定であることを確認した。 FIG. 7 shows a result of evaluating an appropriate range (width dimension W) of the anticorrosion portion 15 in the electric wire with a terminal 10 based on the measurement shown in FIGS. 5A and 5B and the theoretical calculation shown in FIG. As shown in FIG. 7, when the width dimension W of the anticorrosion portion 15 is at least 3 [mm], a desired anticorrosion effect is obtained, and even when the width dimension W of the anticorrosion portion 15 is increased to 5 [mm] or more, the anticorrosion effect is increased. There is no change in the effect. Further, if the width dimension W of the anticorrosion portion 15 is 6 [mm], it is disadvantageous in terms of cost, and it is desirable that the width dimension W of the anticorrosion portion 15 be 5 [mm] or less. In view of these, the present inventors confirmed that the appropriate width dimension W of the anticorrosion portion 15 is 3 [mm] to 5 [mm], and further, the width dimension W of the anticorrosion portion 15 is It has been confirmed that the setting of 4 [mm] is the most appropriate setting that makes both anticorrosion evaluation and cost evaluation compatible.

　本実施形態の効果について説明する。
　（１）端子付き電線１０は、アルミニウムまたはアルミニウム合金からなる芯線１２を有する太物電線１３と、銅または銅合金からなり、芯線１２の先端部に接続された端子１４と、端子１４と芯線１２との接続部分の周囲において端子１４の表面を覆い、端子１４と芯線１２との間で生じうるガルバニック腐食を抑制するための防食部１５とを備える。そして、防食部１５は、端子１４の表面における芯線１２との接続部分の周縁Ｅから所定の沿面距離までの領域に亘って設けられ、該所定の沿面距離が３［ｍｍ］以上に設定される。この態様によれば、防食部１５による好適な防食効果を得ることができる（図５～図７参照）。 The effects of this embodiment will be described.
(1) An electric wire 10 with a terminal includes a thick electric wire 13 having a core wire 12 made of aluminum or an aluminum alloy, a terminal 14 made of copper or a copper alloy and connected to a tip end portion of the core wire 12, a terminal 14, and a core wire 12. The surface of the terminal 14 is covered in the periphery of the connection portion with and the anticorrosion portion 15 is provided for suppressing galvanic corrosion that may occur between the terminal 14 and the core wire 12. The anticorrosion portion 15 is provided over a region from the peripheral edge E of the connection portion with the core wire 12 on the surface of the terminal 14 to a predetermined creepage distance, and the predetermined creepage distance is set to 3 [mm] or more. . According to this aspect, a suitable anticorrosion effect by the anticorrosion portion 15 can be obtained (see FIGS. 5 to 7).

　（２）防食部１５の幅寸法Ｗ（前記所定の沿面距離）が３［ｍｍ］～５［ｍｍ］の範囲内に設定される。一方で、端子１４の表面における防食部１５に覆われた部分以外の領域が、防食処理が施されていない非防食部１６（すなわち、無垢銅が露出された部分）で構成されている。この態様によれば、防食部１５に使用する材料を少なく抑えて省コスト化に寄与しつつも、防食部１５による好適な防食効果を得ることができる（図５～図７参照）。さらには、防食部１５の幅寸法Ｗ（前記所定の沿面距離）を４［ｍｍ］に設定することで、防食面とコスト面の両面においてよりバランスのとれた構成となる。 (2) The width dimension W (predetermined creepage distance) of the anticorrosion portion 15 is set within the range of 3 [mm] to 5 [mm]. On the other hand, the region of the surface of the terminal 14 other than the portion covered by the anticorrosion portion 15 is formed of the noncorrosion portion 16 that is not subjected to the anticorrosion treatment (that is, the portion where the solid copper is exposed). According to this aspect, it is possible to obtain a suitable anticorrosion effect by the anticorrosion portion 15 while contributing to cost reduction by reducing the amount of material used for the anticorrosion portion 15 (see FIGS. 5 to 7). Furthermore, by setting the width dimension W (predetermined creeping distance) of the anticorrosion portion 15 to 4 [mm], the anticorrosion surface and the cost surface are more balanced.

　（２）防食部１５が撥水膜であるため、防食部１５に付着した水を防食部１５に滞留させることなく、非防食部１６に流すことができる。これにより、水の付着によって芯線１２と端子１４との間で生じるガルバニック腐食を抑制できる。 (2) Since the anticorrosion part 15 is a water-repellent film, the water attached to the anticorrosion part 15 can flow to the non-corrosion preventive part 16 without being retained in the anticorrosion part 15. As a result, galvanic corrosion that occurs between the core wire 12 and the terminal 14 due to water adhesion can be suppressed.

　本実施形態は、以下のように変更して実施することができる。本実施形態及び以下の変更例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。
　・上記実施形態では、防食部１５を撥水膜としたが、これに特に限定されるものではなく、端子１４と芯線１２との間で生じうるガルバニック腐食を抑制する効果を得られるならば、撥水膜以外に変更可能である。例えば、防食部１５を、絶縁剤を例えばスプレー塗布して形成した絶縁膜としてもよい。また、防食部１５を、端子１４及び芯線１２の先端部に対して装着する、樹脂成形品からなるカバー部材としてもよい。また、防食部１５を金属めっきで構成してもよい。この場合、金属めっきの材料としては、芯線１２を構成するアルミニウムよりもイオン化傾向の小さいニッケルなどが好ましい。また、防食部１５を金属めっきとする場合には、芯線１２が接続されていない状態の端子１４に対して部分めっきすることが好ましい。 This embodiment can be modified and implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
In the above-described embodiment, the anticorrosion part 15 is the water repellent film, but the invention is not limited to this. If an effect of suppressing galvanic corrosion that may occur between the terminal 14 and the core wire 12 can be obtained, Other than the water repellent film can be changed. For example, the anticorrosion portion 15 may be an insulating film formed by spray coating an insulating agent. Further, the anticorrosion portion 15 may be a cover member made of a resin molded product, which is attached to the tip end portions of the terminal 14 and the core wire 12. Alternatively, the anticorrosion portion 15 may be formed by metal plating. In this case, the metal plating material is preferably nickel or the like, which has a smaller ionization tendency than aluminum forming the core wire 12. When the anticorrosion portion 15 is plated with metal, it is preferable to partially plate the terminal 14 to which the core wire 12 is not connected.

　・上記実施形態では端子１４を無垢銅としたが、これ以外に例えば、超音波溶接による芯線１２との接続が可能な金属材料（例えば銀）のめっきを、端子１４の表面全体に施した構成としてもよい。この構成では、端子１４の表面の銀めっきと芯線１２との間でガルバニック腐食が生じるため、銀めっきの上から上記実施形態の防食部１５を構成するのが望ましい。また、この場合、端子１４の表面において、防食部１５以外の銀めっきが露出する領域が非防食部１６となる。 In the above embodiment, the terminal 14 is made of solid copper, but in addition to this, for example, a metal material (for example, silver) that can be connected to the core wire 12 by ultrasonic welding is plated on the entire surface of the terminal 14. May be In this configuration, galvanic corrosion occurs between the silver plating on the surface of the terminal 14 and the core wire 12. Therefore, it is desirable to configure the anticorrosion portion 15 of the above embodiment from the silver plating. Further, in this case, a region other than the anticorrosion portion 15 where the silver plating is exposed becomes the non-corrosion portion 16 on the surface of the terminal 14.

　・上記実施形態の防食部１５は、端子１４の表面における第１主面１４ａのみに構成されたが、これに限らず、端子１４の第１主面１４ａの大きさと芯線１２の太さ（幅）に応じて、端子１４のどの面まで防食部１５を設けるかを適宜調整するのが望ましい。例えば、端子１４の幅方向（図１における左右方向）において、前記周縁Ｅから端子１４の端部までの距離が３［ｍｍ］未満である場合、該周縁Ｅからの沿面距離で４［ｍｍ］以上の地点は端子１４の幅方向の端面（もしくは第２主面１４ｂ）に位置する。従って、周縁Ｅから端子１４の端面（もしくは第２主面１４ｂ）の当該地点までの領域に亘って防食部１５を構成することが望ましい。 Although the anticorrosion portion 15 of the above-described embodiment is configured only on the first main surface 14a on the surface of the terminal 14, the invention is not limited to this. The size of the first main surface 14a of the terminal 14 and the thickness (width of the core wire 12 It is desirable to appropriately adjust up to which surface of the terminal 14 the anticorrosion portion 15 is to be provided. For example, when the distance from the peripheral edge E to the end of the terminal 14 is less than 3 [mm] in the width direction of the terminal 14 (left-right direction in FIG. 1), the creeping distance from the peripheral edge E is 4 [mm]. The above points are located on the end face in the width direction of the terminal 14 (or the second main surface 14b). Therefore, it is desirable to configure the anticorrosion portion 15 over the region from the peripheral edge E to the point on the end surface of the terminal 14 (or the second main surface 14b).

　・上記実施形態では、防食部１５の幅寸法Ｗ（周縁Ｅからの沿面距離）を３［ｍｍ］～５［ｍｍ］の範囲内に設定しているが、これに限らず、端子１４の表面において防食部１５に覆われていない部分であって防食処理が施されていない非防食部１６が存在する範囲で、防食部１５の幅寸法Ｗを５［ｍｍ］以上に設定してもよい。なお、防食部１５を絶縁膜で構成する場合には、相手側端子と端子１４の接続部１７との電気的接続を良好に図るために、該接続部１７の表面を非防食部１６で構成することが好ましい。 In the above embodiment, the width dimension W (creeping distance from the peripheral edge E) of the anticorrosion portion 15 is set within the range of 3 [mm] to 5 [mm], but not limited to this, the surface of the terminal 14 is not limited to this. In the above, the width dimension W of the anticorrosion portion 15 may be set to 5 [mm] or more in the range where there is the non-corrosion prevention portion 16 that is not covered by the anticorrosion portion 15 and is not subjected to the anticorrosion treatment. When the anticorrosion portion 15 is made of an insulating film, the surface of the connection portion 17 is made of the noncorrosion portion 16 in order to achieve good electrical connection between the mating terminal and the connection portion 17 of the terminal 14. Preferably.

　・端子１４及び芯線１２の相対的な大きさは適宜変更可能である。なお、端子１４及び芯線１２の相対的な大きさを変更した場合でも、防食部１５の幅寸法Ｗの好適な範囲が変わることはない。 -The relative sizes of the terminal 14 and the core wire 12 can be appropriately changed. Even when the relative sizes of the terminal 14 and the core wire 12 are changed, the preferable range of the width dimension W of the anticorrosion portion 15 does not change.

　・上記実施形態では、端子１４を銅または銅合金とし、芯線１２をアルミニウムまたはアルミニウム合金としたが、端子１４及び芯線１２の金属材料は、互いに異なる種類の金属材料であればよい。なお、端子１４及び芯線１２の金属材料を上記実施形態から変更した場合でも、防食部１５の幅寸法Ｗの好適な範囲が変わることはない。 In the above embodiment, the terminal 14 is made of copper or a copper alloy and the core wire 12 is made of aluminum or an aluminum alloy. However, the metal materials of the terminal 14 and the core wire 12 may be different kinds of metal materials. Even when the metal material of the terminal 14 and the core wire 12 is changed from the above embodiment, the preferable range of the width W of the anticorrosion portion 15 does not change.

　・上記実施形態では、芯線１２の断面積が３［ｍｍ２］以上の太物電線１３における端子１４との接続構造において適用したが、これに特に限らず、芯線１２の断面積が３［ｍｍ２］未満の電線と端子１４との接続構造に適用してもよい。また、芯線１２の断面積を小さく変更することに伴い、芯線１２と端子１４との接続態様を例えば圧着などに変更してもよい。 -In above-mentioned embodiment, although it applied in the connection structure with the terminal 14 in the thick electric wire 13 whose core wire 12 has a cross-sectional area of 3 [mm < 2 >] or more, it does not specifically limit to this and the cross-sectional area of the core wire 12 is 3 [mm. It may be applied to a connection structure between an electric wire of less than 2 ] and the terminal 14. In addition, the connection mode between the core wire 12 and the terminal 14 may be changed to, for example, crimping along with the change in the cross-sectional area of the core wire 12.

　本発明がその技術的思想から逸脱しない範囲で他の特有の形態で具体化されてもよいということは当業者にとって明らかであろう。例えば、実施形態（あるいはその１つ又は複数の態様）において説明した部品のうちの一部を省略したり、いくつかの部品を組合せてもよい。本発明の範囲は、添付の請求の範囲を参照して、請求の範囲が権利を与えられる均等物の全範囲と共に確定されるべきである。 It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the technical idea thereof. For example, some of the components described in the embodiment (or one or more aspects thereof) may be omitted, or some components may be combined. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which the claims are entitled.

　１０…端子付き電線
　１２…芯線
　１３…太物電線
　１４…端子
　１５…防食部
　１６…非防食部
　Ｅ…端子の表面における芯線との接続部分の周縁 DESCRIPTION OF SYMBOLS 10 ... Electric wire with a terminal 12 ... Core wire 13 ... Thick electric wire 14 ... Terminal 15 ... Corrosion-proof part 16 ... Non-corrosion part E ... Periphery of the connection part with the core wire on the surface of the terminal

Claims (6)

　金属材料からなる芯線を有する電線と、
　前記芯線とは異なる種類の金属材料からなり、前記芯線の先端部に接続された端子と、
　前記端子と前記芯線との接続部分の周囲における前記端子の表面を覆い、前記端子と前記芯線との間で生じうるガルバニック腐食を抑制するための防食部と
を備え、
　前記防食部は、前記端子の表面における前記芯線との接続部分の周縁から所定の沿面距離までの領域に亘って設けられ、該所定の沿面距離が３［ｍｍ］以上に設定され、
　前記端子の表面には、前記防食部に覆われていない部分であって防食処理が施されていない非防食部が設けられている端子付き電線。 An electric wire having a core wire made of a metal material,
Made of a metal material different from the core wire, a terminal connected to the tip of the core wire,
The surface of the terminal around the connection portion of the terminal and the core wire is covered, and an anticorrosion portion for suppressing galvanic corrosion that may occur between the terminal and the core wire,
The anticorrosion portion is provided over a region from the peripheral edge of the connection portion with the core wire on the surface of the terminal to a predetermined creepage distance, and the predetermined creepage distance is set to 3 [mm] or more,
An electric wire with a terminal, wherein a non-corrosion-proof portion which is not covered by the corrosion-proof portion and which is not subjected to a corrosion-proof treatment is provided on the surface of the terminal. 　前記所定の沿面距離が３［ｍｍ］～５［ｍｍ］の範囲内に設定されている、請求項１に記載の端子付き電線。 The electric wire with a terminal according to claim 1, wherein the predetermined creepage distance is set within a range of 3 [mm] to 5 [mm]. 　前記所定の沿面距離が４［ｍｍ］に設定されている、請求項２に記載の端子付き電線。 The electric wire with a terminal according to claim 2, wherein the predetermined creepage distance is set to 4 [mm]. 　前記防食部が撥水膜である、請求項１～３のいずれか１項に記載の端子付き電線。 The electric wire with a terminal according to any one of claims 1 to 3, wherein the anticorrosion part is a water-repellent film. 　前記防食部が絶縁膜である、請求項１～３のいずれか１項に記載の端子付き電線。 The electric wire with a terminal according to any one of claims 1 to 3, wherein the anticorrosion portion is an insulating film. 　前記芯線の断面積が３［ｍｍ２］以上であり、
　前記芯線と前記端子とが超音波溶接にて接続されてなる、請求項１～５のいずれか１項に記載の端子付き電線。 The cross-sectional area of the core wire is 3 [mm 2 ] or more,
The electric wire with a terminal according to any one of claims 1 to 5, wherein the core wire and the terminal are connected by ultrasonic welding.
PCT/JP2018/043047 2018-11-21 2018-11-21 Terminal-equipped electric wire Ceased WO2020105153A1 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001167821A (en) * 1999-12-09 2001-06-22 Yazaki Corp Terminal connection part of coated electric wire and waterproofing method and apparatus therefor
JP2012089431A (en) * 2010-10-22 2012-05-10 Auto Network Gijutsu Kenkyusho:Kk Terminal crimping wire for vehicle
JP2012174447A (en) * 2011-02-21 2012-09-10 Auto Network Gijutsu Kenkyusho:Kk Terminal crimping wire for vehicle
JP2012174449A (en) * 2011-02-21 2012-09-10 Auto Network Gijutsu Kenkyusho:Kk Terminal crimping wire for automobiles
JP2014044927A (en) * 2012-07-30 2014-03-13 Yazaki Corp Aluminum wire with crimp-type terminal and manufacturing method of aluminum wire with crimp-type terminal
JP2014127290A (en) * 2012-12-26 2014-07-07 Yazaki Corp Aluminum wire with crimp terminal and manufacturing method thereof
JP2015210986A (en) * 2014-04-28 2015-11-24 矢崎総業株式会社 Terminal connection structure and terminal connection method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001167821A (en) * 1999-12-09 2001-06-22 Yazaki Corp Terminal connection part of coated electric wire and waterproofing method and apparatus therefor
JP2012089431A (en) * 2010-10-22 2012-05-10 Auto Network Gijutsu Kenkyusho:Kk Terminal crimping wire for vehicle
JP2012174447A (en) * 2011-02-21 2012-09-10 Auto Network Gijutsu Kenkyusho:Kk Terminal crimping wire for vehicle
JP2012174449A (en) * 2011-02-21 2012-09-10 Auto Network Gijutsu Kenkyusho:Kk Terminal crimping wire for automobiles
JP2014044927A (en) * 2012-07-30 2014-03-13 Yazaki Corp Aluminum wire with crimp-type terminal and manufacturing method of aluminum wire with crimp-type terminal
JP2014127290A (en) * 2012-12-26 2014-07-07 Yazaki Corp Aluminum wire with crimp terminal and manufacturing method thereof
JP2015210986A (en) * 2014-04-28 2015-11-24 矢崎総業株式会社 Terminal connection structure and terminal connection method

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