JP2011238465A - Wire with terminal and manufacturing method thereof - Google Patents

Wire with terminal and manufacturing method thereof Download PDF

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JP2011238465A
JP2011238465A JP2010108943A JP2010108943A JP2011238465A JP 2011238465 A JP2011238465 A JP 2011238465A JP 2010108943 A JP2010108943 A JP 2010108943A JP 2010108943 A JP2010108943 A JP 2010108943A JP 2011238465 A JP2011238465 A JP 2011238465A
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terminal
wire
electric wire
crimping
exposed
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Takaaki Ito
貴章 伊藤
Yoshiaki Yamano
能章 山野
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a wire with a terminal capable of delaying wire corrosion as much as possible and a manufacturing method thereof.SOLUTION: Of strands 11, a wire 12 and a terminal 20 are crimped by interposing a conduction blocking part 26 that blocks conduction between an exposure part 16a on a connection part side and a coupling part 28 between the exposure part 16a on the connection part side exposed in the coupling part 28 of the terminal 20 and the coupling part 28 of the terminal 20, for example, by interposing an insulating film. A corrosion part 30 is formed so as to cover the conduction blocking part 26 and the strand 11 exposed in one end of a wire 12, thereby preventing a corroded part generated in the terminal 20 from coming in contact with the strand 11. This suppresses corrosion occurrence near the exposure part 16a on the connection part side, so that corrosion of the wire 12 can be delayed as much as possible.

Description

本発明は、端子付き電線およびその製造方法に関する。   The present invention relates to an electric wire with a terminal and a method for manufacturing the same.

自動車では、搭載された電子部品および電装品を電気的に接続するために、ワイヤーハーネスが用いられる。ワイヤーハーネスとしては、銅電線を用いた銅ワイヤーハーネスが知られているが、重量削減のために、アルミニウム電線を用いたアルミニウムハーネスの開発が進められている。   In an automobile, a wire harness is used to electrically connect the mounted electronic component and electrical component. As a wire harness, a copper wire harness using a copper electric wire is known, but an aluminum harness using an aluminum electric wire is being developed for weight reduction.

ワイヤーハーネスにおいて、電線は、末端に金属端子が取付けられた端子付き電線として組込まれる。この端子に、接続相手となる端子(以下「接続相手端子」という場合がある)が接続される。電線は、複数本の素線から成る芯線が絶縁被覆材で覆われた構造である。電線の末端に端子を取付けるときには、電線の末端の被覆材が剥がされて素線が露出され、この露出された素線に端子が取付けられて圧着される(たとえば、特許文献1参照)。   In the wire harness, the electric wire is incorporated as a terminal-attached electric wire with a metal terminal attached to the end. This terminal is connected to a terminal that is a connection partner (hereinafter also referred to as “connection partner terminal”). The electric wire has a structure in which a core wire composed of a plurality of strands is covered with an insulating coating material. When the terminal is attached to the end of the electric wire, the covering material at the end of the electric wire is peeled off to expose the strand, and the terminal is attached to the exposed strand and is crimped (for example, see Patent Document 1).

圧着後に素線を露出したままにしておくと、素線から水分が伝わって浸透し、電線の被覆材で覆われた部分にまで浸入するおそれがある。この水分の浸透を防ぐための防水処理として、特許文献1に開示される技術では、素線と端子との圧着部を樹脂で被覆して保護している。   If the element wire is left exposed after crimping, moisture may be transmitted from the element wire and penetrate into the portion covered with the covering material of the electric wire. As a waterproofing treatment for preventing the permeation of moisture, the technique disclosed in Patent Document 1 protects the crimped portion between the wire and the terminal by covering with a resin.

また前述のアルミニウムハーネスでは、電線の素線はアルミニウムで形成されるが、端子としては、黄銅などの銅合金などで形成される端子が用いられる。このように電線の素線と端子とが異種金属によって形成される場合に、素線と端子との接触部分に塩水などの電解質水溶液が付着すると、電気化学反応によって腐食が進行する電食が発生する。具体的には、金属同士の標準電極電位差によって、標準電極電位が低い金属、ここではアルミニウムに腐食が発生し、電線が腐食するという問題が生じる。   In the above-described aluminum harness, the wire of the electric wire is formed of aluminum, but a terminal formed of a copper alloy such as brass is used as the terminal. In this way, when the wire of the wire and the terminal are formed of different metals, if an aqueous electrolyte solution such as salt water adheres to the contact portion of the wire and the terminal, galvanic corrosion that proceeds due to electrochemical reaction occurs. To do. Specifically, due to the difference in standard electrode potential between metals, a problem arises in that corrosion occurs in a metal having a low standard electrode potential, here aluminum, and the wire corrodes.

特開2001−167821号公報Japanese Patent Laid-Open No. 2001-167821

特許文献1に開示される技術は、防水に関するものであり、特許文献1に開示される技術では、電食については考慮されていない。   The technique disclosed in Patent Document 1 relates to waterproofing, and the technique disclosed in Patent Document 1 does not consider electric corrosion.

仮に、特許文献1に開示される技術のように、電線の素線が露出している部分(以下「素線露出部」という場合がある)を、樹脂で被覆したとしても、塩水などの電解質水溶液の付着によって端子の腐食が進行すると、樹脂で被覆された部分の内部まで電解質水溶液が入り込み、素線露出部に到達してしまう。これによって、素線露出部の素線の先端付近から腐食が発生し、電線が腐食するという問題が生じる。   Even if the portion where the wire of the electric wire is exposed (hereinafter sometimes referred to as “wire exposed portion”) is covered with a resin as in the technique disclosed in Patent Document 1, an electrolyte such as salt water is used. When the corrosion of the terminal proceeds due to the adhesion of the aqueous solution, the electrolyte aqueous solution enters the inside of the portion covered with the resin and reaches the exposed portion of the strand. This causes a problem that corrosion occurs from the vicinity of the tip of the strand of the exposed portion of the strand, and the wire is corroded.

本発明の目的は、電線の腐食を可及的に遅延させることができる端子付き電線およびその製造方法を提供することである。   The objective of this invention is providing the electric wire with a terminal which can delay the corrosion of an electric wire as much as possible, and its manufacturing method.

本発明の端子付き電線は、電線と、前記電線に圧着される端子であって、(a)接続相手となる接続相手端子に電気的に接続される端子接続部、(b)前記電線の一端部で露出する素線に圧着されて、前記素線に電気的に接続される電線圧着部、および(c)前記端子接続部と前記電線圧着部とを一体に連結する連結部を備える端子と、前記電線の一端部で露出する素線を覆い、前記素線を防食する防食部と、前記防食部内に設けられ、前記素線のうち前記端子の連結部で露出する素線先端部と、前記連結部との間に介在され、前記素線先端部と前記連結部との導通を阻害する導通阻害部とを備えることを特徴とする。   The electric wire with a terminal of the present invention is an electric wire and a terminal to be crimped to the electric wire, and (a) a terminal connecting portion electrically connected to a connection counterpart terminal to be connected, (b) one end of the electric wire. A wire crimping portion that is crimped to the strand exposed at the portion and electrically connected to the strand; and (c) a terminal that includes a connecting portion that integrally couples the terminal connection portion and the wire crimping portion. Covering the element wire exposed at one end of the electric wire, preventing corrosion of the element wire, and being provided in the anticorrosion part, the element wire tip exposed at the connecting portion of the terminal among the element wires, It is provided between the said connection part, The conduction | electrical_connection inhibition part which inhibits conduction | electrical_connection with the said strand front-end | tip part and the said connection part is characterized by the above-mentioned.

また本発明の端子付き電線は、前記導通阻害部は、絶縁性材料から成る絶縁フィルムによって構成されることを特徴とする。   Moreover, the electric wire with a terminal of the present invention is characterized in that the conduction-inhibiting portion is constituted by an insulating film made of an insulating material.

また本発明の端子付き電線の製造方法は、一端部で素線が露出する電線と、前記電線に圧着される端子とを備える端子付き電線の製造方法であって、前記端子を準備する準備工程と、前記準備工程で準備した前記端子を前記電線に圧着する圧着工程と、前記圧着工程で前記端子が圧着された前記電線に防食部を形成する防食部形成工程とを備え、前記準備工程では、(a)接続相手となる接続相手端子に電気的に接続される端子接続部、(b)前記電線の一端部で露出する素線に圧着されて、前記素線に電気的に接続される電線圧着部、および(c)前記端子接続部と前記電線圧着部とを一体に連結する連結部とを備える端子を準備し、前記圧着工程では、前記素線のうち前記端子の連結部で露出する素線先端部と前記連結部との間に絶縁フィルムを介在させて、前記準備工程で準備した前記端子の前記電線圧着部を前記素線に圧着して電気的に接続し、前記防食部形成工程では、前記電線の一端部で露出する素線と前記絶縁フィルムとを覆うように、防食部を形成することを特徴とする。   Moreover, the manufacturing method of the electric wire with a terminal of this invention is a manufacturing method of the electric wire with a terminal provided with the electric wire which a strand exposes at one end part, and the terminal crimped | bonded to the said electric wire, Comprising: The preparatory process of preparing the said terminal And a crimping step for crimping the terminal prepared in the preparation step to the electric wire, and an anticorrosion portion forming step for forming an anticorrosion portion on the electric wire in which the terminal is crimped in the crimping step. (A) A terminal connection portion that is electrically connected to a connection counterpart terminal that is a connection counterpart; (b) is crimped to a wire exposed at one end of the electric wire and is electrically connected to the wire. Preparing a terminal comprising: a wire crimping portion; and (c) a connecting portion that integrally connects the terminal connecting portion and the wire crimping portion, and in the crimping step, the wire is exposed at the connecting portion of the terminal. An insulation film between the wire tip and the connecting portion. The wire crimping portion of the terminal prepared in the preparation step is crimped and electrically connected to the strand, with the lum interposed, and in the anticorrosion portion forming step, the strand exposed at one end of the wire An anticorrosion part is formed so as to cover the insulating film.

また本発明の端子付き電線の製造方法は、一端部で素線が露出する電線と、前記電線に圧着される端子とを備える端子付き電線の製造方法であって、前記端子を準備する準備工程と、前記準備工程で準備した前記端子を前記電線に圧着する圧着工程と、前記圧着工程で前記端子が圧着された前記電線に防食部を形成する防食部形成工程とを備え、前記準備工程では、(a)接続相手となる接続相手端子に電気的に接続される端子接続部、(b)前記電線の一端部で露出する素線に圧着されて、前記素線に電気的に接続される電線圧着部、および(c)前記端子接続部と前記電線圧着部とを一体に連結する連結部とを備える端子を準備し、前記素線のうち前記端子の連結部で露出する素線先端部に接触する部分と前記連結部との間に導通阻害部を設け、前記圧着工程では、前記準備工程で準備した前記端子の前記電線圧着部を前記素線に圧着して電気的に接続し、前記防食部形成工程では、前記電線の一端部で露出する素線と前記導通阻害部とを覆うように、防食部を形成することを特徴とする。   Moreover, the manufacturing method of the electric wire with a terminal of this invention is a manufacturing method of the electric wire with a terminal provided with the electric wire which a strand exposes at one end part, and the terminal crimped | bonded to the said electric wire, Comprising: The preparatory process of preparing the said terminal And a crimping step for crimping the terminal prepared in the preparation step to the electric wire, and an anticorrosion portion forming step for forming an anticorrosion portion on the electric wire in which the terminal is crimped in the crimping step. (A) A terminal connection portion that is electrically connected to a connection counterpart terminal that is a connection counterpart; (b) is crimped to a wire exposed at one end of the electric wire and is electrically connected to the wire. A wire tip, and (c) a terminal provided with a connecting portion that integrally connects the terminal connecting portion and the wire crimping portion, and a wire tip that is exposed at the connecting portion of the terminals among the wires A conduction-inhibiting portion between the contact portion and the connecting portion In the crimping step, the wire crimping portion of the terminal prepared in the preparation step is crimped and electrically connected to the element wire, and in the anticorrosion portion forming step, the element exposed at one end of the wire is provided. An anticorrosion part is formed so as to cover the wire and the conduction-inhibiting part.

本発明の端子付き電線によれば、電線の一端部で露出する素線は防食部で覆われ、防食部内で、素線のうち端子の連結部で露出する素線先端部と連結部との間には導通阻害部が設けられる。これによって、端子の腐食が起きた場合に、腐食した部分が素線に接触すること、具体的には電気的に接続されることを回避することができるので、素線の先端部付近での腐食の発生を抑制することができる。換言すれば、端子の腐食が起きた場合でも、導通阻害部で腐食を止めることができる。したがって、電線の腐食を可及的に遅延させることができる。   According to the electric wire with a terminal of the present invention, the wire exposed at one end of the wire is covered with the anticorrosion part, and the wire tip between the wire exposed at the terminal connection part and the connection part in the anticorrosion part. A conduction hindering part is provided between them. As a result, when the corrosion of the terminal occurs, it is possible to avoid the corroded portion from contacting the strand, specifically, being electrically connected. The occurrence of corrosion can be suppressed. In other words, even when the corrosion of the terminal occurs, the corrosion can be stopped at the conduction inhibiting portion. Therefore, corrosion of the electric wire can be delayed as much as possible.

また本発明の端子付き電線によれば、導通阻害部は、絶縁フィルムによって構成されるので、たとえば端子となる板材に絶縁層をコーティングして導通阻害部を構成する場合に比べて、厚い導通阻害部を容易に実現することができるので、防食性を向上させることができる。   Further, according to the electric wire with terminal of the present invention, since the conduction hindering part is constituted by an insulating film, for example, compared to the case where the conduction hindering part is formed by coating an insulating layer on a plate material serving as a terminal, the conduction hindering part is thicker. Since the portion can be easily realized, the corrosion resistance can be improved.

また本発明の端子付き電線の製造方法によれば、圧着工程において、素線先端部と連結部との間に絶縁フィルムを介在させて、端子の電線圧着部を素線に圧着して電気的に接続し、防食部形成工程において、電線の一端部で露出する素線と絶縁フィルムとを覆うように、防食部を形成する。これによって、防食部内で素線先端部と連結部との間に介在する絶縁フィルムを導通阻害部として備える端子付き電線を得ることができる。この端子付き電線では、端子の腐食が起きた場合に、腐食した部分が素線に接触すること、具体的には電気的に接続されることを回避することができるので、素線の先端部付近での腐食の発生を抑制することができる。したがって、電線の腐食を可及的に遅延させることができる。   Further, according to the method for manufacturing a terminal-attached electric wire of the present invention, in the crimping step, an insulating film is interposed between the wire tip portion and the connecting portion, and the wire crimp portion of the terminal is crimped to the wire to electrically In the anticorrosion part forming step, the anticorrosion part is formed so as to cover the wire exposed at one end of the electric wire and the insulating film. Thereby, the electric wire with a terminal provided with the insulating film interposed between a strand front-end | tip part and a connection part in a corrosion prevention part as a conduction | electrical_connection inhibition part can be obtained. In this electric wire with a terminal, when the corrosion of the terminal occurs, it is possible to avoid the corroded portion from contacting the strand, specifically, being electrically connected. The occurrence of corrosion in the vicinity can be suppressed. Therefore, corrosion of the electric wire can be delayed as much as possible.

また本発明の端子付き電線の製造方法によれば、準備工程において、端子に導通阻害部を設け、圧着工程において、端子の電線圧着部を素線に圧着して電気的に接続し、防食部形成工程において、電線の一端部で露出する素線と導通阻害部とを覆うように、防食部を形成する。これによって、防食部内で素線先端部と連結部との間に介在する導通阻害部を備える端子付き電線を得ることができる。この端子付き電線では、端子の腐食が起きた場合に、腐食した部分が素線に接触すること、具体的には電気的に接続されることを回避することができるので、素線の先端部付近での腐食の発生を抑制することができる。したがって、電線の腐食を可及的に遅延させることができる。   Moreover, according to the manufacturing method of the electric wire with a terminal of the present invention, in the preparation step, the terminal is provided with the conduction inhibiting portion, and in the crimping step, the electric wire crimping portion of the terminal is crimped to the wire and electrically connected, and the anticorrosion portion. In the forming step, the anticorrosion part is formed so as to cover the wire exposed at one end of the electric wire and the conduction inhibiting part. Thereby, the electric wire with a terminal provided with the conduction | electrical_connection inhibition part interposed between a strand front-end | tip part and a connection part in a corrosion prevention part can be obtained. In this electric wire with a terminal, when the corrosion of the terminal occurs, it is possible to avoid the corroded portion from contacting the strand, specifically, being electrically connected. The occurrence of corrosion in the vicinity can be suppressed. Therefore, corrosion of the electric wire can be delayed as much as possible.

本発明の実施の一形態である端子付き電線1を示す側面図である。It is a side view which shows the electric wire 1 with a terminal which is one Embodiment of this invention. 本発明の実施の一形態である端子付き電線1を示す平面図である。It is a top view which shows the electric wire 1 with a terminal which is one Embodiment of this invention. 図1に示す端子付き電線1を構成する端子20を示す斜視図である。It is a perspective view which shows the terminal 20 which comprises the electric wire 1 with a terminal shown in FIG. 図1に示す端子付き電線1の連結部28付近を拡大して模式的に示す斜視断面図である。FIG. 2 is a perspective sectional view schematically showing an enlarged vicinity of a connecting portion 28 of the terminal-attached electric wire 1 shown in FIG. 1. 図1に示す端子付き電線1の連結部28付近の長手方向に垂直な断面構成を示す断面図である。It is sectional drawing which shows a cross-sectional structure perpendicular | vertical to the longitudinal direction of the connection part 28 vicinity of the electric wire 1 with a terminal shown in FIG. 図1に示す端子付き電線1の連結部28付近を拡大して模式的に示す斜視断面図である。FIG. 2 is a perspective sectional view schematically showing an enlarged vicinity of a connecting portion 28 of the terminal-attached electric wire 1 shown in FIG. 1. 導通阻害部26と端子20との位置関係を模式的に示す斜視図である。3 is a perspective view schematically showing a positional relationship between a conduction inhibiting unit 26 and a terminal 20. FIG. 他の例の導通阻害部26Aを備える端子付き電線1Aの構成を示す斜視断面図である。It is a perspective sectional view showing the composition of electric wire with terminal 1A provided with conduction inhibition part 26A of other examples. 他の例の導通阻害部26Aを備える端子付き電線1Aの構成を示す斜視図である。It is a perspective view which shows the structure of 1 A of electric wires with a terminal provided with 26 A of conduction | electrical_connection inhibition parts of another example.

図1は、本発明の実施の一形態である端子付き電線1を示す側面図である。図2は、本発明の実施の一形態である端子付き電線1を示す平面図である。図3は、図1に示す端子付き電線1を構成する端子20を示す斜視図である。図2は、図1に示す端子付き電線1を、図1の紙面上側から見た図に相当する。   Drawing 1 is a side view showing electric wire 1 with a terminal which is one embodiment of the present invention. Drawing 2 is a top view showing electric wire 1 with a terminal which is one embodiment of the present invention. FIG. 3 is a perspective view showing a terminal 20 constituting the electric wire with terminal 1 shown in FIG. 2 corresponds to a view of the electric wire with terminal 1 shown in FIG. 1 as viewed from the upper side of FIG.

端子付き電線1は、電線10と、端子20と、防食部30と、導通阻害部26とを備える。電線10には、端子20が圧着されている。図1および図2では、理解を容易にするために、防食部30を仮想的に示している。また図3では、電線10に圧着される前の段階の端子20の状態を示す。   The electric wire with terminal 1 includes an electric wire 10, a terminal 20, an anticorrosion part 30, and a conduction inhibition part 26. A terminal 20 is crimped to the electric wire 10. In FIG. 1 and FIG. 2, the anticorrosion part 30 is virtually shown in order to make an understanding easy. FIG. 3 shows the state of the terminal 20 before being crimped to the electric wire 10.

電線10は、複数の素線11で構成される芯線12と、芯線12を被覆する被覆部13とを備えて構成される。電線10は、芯線12が、その外周を被覆部13によって被覆されて構成される。本実施の形態では、芯線12は、複数の素線11を撚って構成されている。電線10の素線11と端子20とは、異種金属で構成されている。   The electric wire 10 includes a core wire 12 composed of a plurality of strands 11 and a covering portion 13 that covers the core wire 12. The electric wire 10 is configured by covering the outer periphery of a core wire 12 with a covering portion 13. In the present embodiment, the core wire 12 is formed by twisting a plurality of strands 11. The strand 11 and the terminal 20 of the electric wire 10 are made of different metals.

素線11は、本実施の形態では、アルミニウムまたはアルミニウム合金から成り、アルミニウム線またはアルミニウム合金線によって実現される。被覆部13は、樹脂などで形成される。電線10の一端部は、被覆部13が剥がされて芯線12が露出するように加工されている。以下の説明では、電線10のうち、被覆部13が剥がされた一端部を「芯線端部」という場合がある。電線10は、芯線端部14と、被覆部13の芯線端部14側の端部(以下「被覆端部」という場合がある)15とにおいて、端子20と圧着される。   In the present embodiment, the strand 11 is made of aluminum or an aluminum alloy, and is realized by an aluminum wire or an aluminum alloy wire. The covering portion 13 is made of resin or the like. One end of the electric wire 10 is processed so that the covering portion 13 is peeled off and the core wire 12 is exposed. In the following description, one end portion of the electric wire 10 from which the covering portion 13 is peeled may be referred to as a “core wire end portion”. The electric wire 10 is crimped to the terminal 20 at a core wire end portion 14 and an end portion on the core wire end portion 14 side of the covering portion 13 (hereinafter also referred to as “covered end portion”) 15.

端子20は、一方向に延びて長尺状に形成される。具体的には、端子20は、電線10に圧着されている状態において、電線10の延在方向に延びて長尺状に形成される。本実施の形態では、端子20の長手方向において、電線10に圧着される側を他方側といい、その反対側を一方側という。   The terminal 20 extends in one direction and is formed in a long shape. Specifically, in a state where the terminal 20 is crimped to the electric wire 10, the terminal 20 extends in the extending direction of the electric wire 10 and is formed in an elongated shape. In the present embodiment, in the longitudinal direction of the terminal 20, the side to be crimped to the electric wire 10 is referred to as the other side, and the opposite side is referred to as the one side.

端子20は、その長手方向一方側から他方側に向けて順に、端子接続部21、連結部28、芯線圧着部22および被覆圧着部23を備える。芯線圧着部22は、電線圧着部に相当する。端子接続部21、芯線圧着部22および被覆圧着部23は、それぞれ離隔して形成されている。連結部28は、端子接続部21と芯線圧着部22とを一体に連結する。   The terminal 20 includes a terminal connection portion 21, a connecting portion 28, a core wire crimping portion 22, and a covering crimping portion 23 in order from the one side in the longitudinal direction toward the other side. The core wire crimping portion 22 corresponds to a wire crimping portion. The terminal connection part 21, the core wire crimping part 22 and the covering crimping part 23 are formed separately from each other. The connecting portion 28 integrally connects the terminal connecting portion 21 and the core wire crimping portion 22.

端子20は、平板状の、導電性を有する金属板(以下「導電性金属板」という場合がある)を打ち抜いた後、屈曲するなどして、一体に形成されている。導電性金属板としては、たとえば、銅板もしくは黄銅などの銅合金板、またはこれらの錫めっき板が用いられる。本実施の形態では、端子20が雌端子である場合について説明する。本発明の他の実施の形態では、端子20は雄端子であってもよい。   The terminal 20 is integrally formed by punching out a flat metal plate having conductivity (hereinafter sometimes referred to as “conductive metal plate”) and then bending it. As the conductive metal plate, for example, a copper alloy plate such as a copper plate or brass, or a tin plating plate thereof is used. In the present embodiment, a case where the terminal 20 is a female terminal will be described. In other embodiments of the present invention, the terminal 20 may be a male terminal.

端子接続部21は、接続相手となる端子である接続相手端子40と電気的に接続される部分である。本実施の形態では、接続相手端子40は雄端子(以下「雄端子40」という場合がある)であり、端子接続部21には、雄端子40が嵌合状に挿入されて接続される。すなわち端子接続部21は、接続相手端子40と嵌合して電気的に接続される端子嵌合部として機能する。端子接続部21は、本実施の形態では、端子20の長手方向に沿って貫通する筒状、具体的には四角筒状に形成されている。   The terminal connection portion 21 is a portion that is electrically connected to a connection partner terminal 40 that is a terminal to be connected. In the present embodiment, the connection partner terminal 40 is a male terminal (hereinafter may be referred to as “male terminal 40”), and the male terminal 40 is inserted and connected to the terminal connection portion 21. That is, the terminal connecting portion 21 functions as a terminal fitting portion that is fitted and electrically connected to the connection counterpart terminal 40. In the present embodiment, the terminal connecting portion 21 is formed in a cylindrical shape penetrating along the longitudinal direction of the terminal 20, specifically, a rectangular cylindrical shape.

端子接続部21の内部には、接続相手端子40に接触する接触片24が備えられている。接触片24は、底部25から長手方向一方に延びる板材を端子接続部21の内方に折返すとともに、先端および折り返した先端部分をU字状に屈曲させて底部25に当接するように折返して形成されている。したがって接触片24は、折返しの曲折部位を支点として弾性変形可能になっている。   A contact piece 24 that contacts the connection partner terminal 40 is provided inside the terminal connection portion 21. The contact piece 24 is folded back so that the plate member extending in the longitudinal direction from the bottom portion 25 is folded inward of the terminal connecting portion 21, and the tip and the folded tip portion are bent in a U shape so as to contact the bottom portion 25. Is formed. Therefore, the contact piece 24 can be elastically deformed with the folded portion of the fold as a fulcrum.

端子接続部21の底部25に対向する天井部27は、2枚の天蓋、すなわち第1天蓋27aに第2天蓋27bが重ね合わされて形成されている。第1天蓋27aには係止爪51が形成され、第2天蓋27bには係止孔50が形成されている。係止爪51は係止孔50に係止される。これによって、端子接続部21の変形を防止し、機械的な強度を高めることができる。   The ceiling portion 27 facing the bottom portion 25 of the terminal connection portion 21 is formed by overlapping the two canopies, that is, the first canopy 27a and the second canopy 27b. A locking claw 51 is formed on the first canopy 27a, and a locking hole 50 is formed on the second canopy 27b. The locking claw 51 is locked in the locking hole 50. Thereby, the deformation of the terminal connection portion 21 can be prevented and the mechanical strength can be increased.

2枚の天蓋27a,27bのうち、底部25側、すなわち図1の紙面に向かって下側の第1天蓋27aは、端子接続部21の開口から所定の距離だけ内側の部分が、底部25に向かって突出する凸部27cとして形成されている。この第1天蓋27aの凸部27cと接触片24とが協働して、雄端子40を所定の接触圧をもって弾性的に狭圧する。これによって、雄端子40と端子20との嵌合力が高められている。   Of the two canopies 27a and 27b, the first canopy 27a on the bottom 25 side, that is, the lower side toward the plane of FIG. It is formed as the convex part 27c which protrudes toward. The convex portion 27c of the first canopy 27a and the contact piece 24 cooperate to elastically narrow the male terminal 40 with a predetermined contact pressure. Thereby, the fitting force between the male terminal 40 and the terminal 20 is enhanced.

芯線圧着部22は、端子接続部21に連なる底部25と、底部25とともに電線10の芯線端部14に圧着される一対の圧着片22a,22bとを備えて構成される。芯線圧着部22は、芯線端部14に圧着される前の段階では、オープンバレル状に形成されており、長手方向に垂直な断面形状は、U字形状になっている。換言すれば、芯線圧着部22の一対の圧着片22a,22bは、互いに対向し、底部25から一方向に向けて突出するように立ち上げられた状態になっている。以下の説明では、圧着片22a,22bが立ち上げられた方向を「高さ方向」という場合がある。   The core wire crimping portion 22 includes a bottom portion 25 connected to the terminal connection portion 21 and a pair of crimping pieces 22 a and 22 b that are crimped to the core wire end portion 14 of the electric wire 10 together with the bottom portion 25. The core wire crimping portion 22 is formed in an open barrel shape before being crimped to the core wire end portion 14, and the cross-sectional shape perpendicular to the longitudinal direction is a U-shape. In other words, the pair of crimping pieces 22a and 22b of the core wire crimping portion 22 are in a state of being raised so as to face each other and protrude from the bottom portion 25 in one direction. In the following description, the direction in which the crimping pieces 22a and 22b are raised may be referred to as a “height direction”.

同様に、被覆圧着部23は、芯線圧着部22に連なる底部25と、底部25とともに電線10の被覆端部15に圧着される一対の圧着片23a,23bとを備えて構成される。被覆圧着部23は、被覆端部15に圧着される前の段階では、オープンバレル状に形成されており、長手方向に垂直な断面形状は、U字形状になっている。換言すれば、被覆圧着部23の一対の圧着片23a,23bは、互いに対向し、底部25から一方向に向けて突出するように立ち上げられた状態になっている。   Similarly, the covering crimping portion 23 includes a bottom portion 25 that is continuous with the core wire crimping portion 22 and a pair of crimping pieces 23 a and 23 b that are crimped to the covering end portion 15 of the electric wire 10 together with the bottom portion 25. The coated crimping part 23 is formed in an open barrel shape before being crimped to the coated end 15, and the cross-sectional shape perpendicular to the longitudinal direction is a U-shape. In other words, the pair of crimping pieces 23 a and 23 b of the covering crimping portion 23 are in a state of being raised so as to face each other and protrude in one direction from the bottom portion 25.

電線10の芯線端部14は、芯線圧着部22の対向する一対の圧着片22a,22b間に配設される。この状態で、芯線圧着部22が、芯線端部14の長手方向の一部分に、その外周を覆うように圧着される。電線10の被覆端部15は、被覆圧着部23の対向する一対の圧着片23a,23b間に配設される。この状態で、被覆圧着部23が、被覆端部15の長手方向の一部分に、その外周を覆うように圧着される。   The core wire end portion 14 of the electric wire 10 is disposed between a pair of crimping pieces 22 a and 22 b facing the core wire crimping portion 22. In this state, the core wire crimping portion 22 is crimped to a part of the core wire end portion 14 in the longitudinal direction so as to cover the outer periphery thereof. The covered end 15 of the electric wire 10 is disposed between a pair of pressure-bonding pieces 23 a and 23 b facing each other. In this state, the covering crimping portion 23 is crimped to a part of the covering end portion 15 in the longitudinal direction so as to cover the outer periphery thereof.

本実施の形態では、電線10の芯線端部14のうち、長手方向両端部間の中間部が芯線圧着部22と圧着される。芯線端部14の長手方向一端部および長手方向他端部を構成する素線11は、高さ方向一方側で、端子20の芯線圧着部22の長手方向両側から外方に露出された状態となっている。以下、芯線端部14を構成する素線11のうち、端子20から露出している部分を「素線露出部16」という。本実施の形態では、素線露出部16は、芯線端部14を構成する素線11のうち、芯線圧着部22の長手方向両側から露出する部分である。   In the present embodiment, of the core wire end portion 14 of the electric wire 10, an intermediate portion between both end portions in the longitudinal direction is crimped to the core wire crimping portion 22. The strand 11 constituting the one end in the longitudinal direction and the other end in the longitudinal direction of the core wire end 14 is exposed outward from both sides in the longitudinal direction of the core crimping portion 22 of the terminal 20 on one side in the height direction. It has become. Hereinafter, the part exposed from the terminal 20 among the strands 11 constituting the core wire end portion 14 is referred to as a “strand exposed portion 16”. In the present embodiment, the bare wire exposed portion 16 is a portion exposed from both sides in the longitudinal direction of the core wire crimping portion 22 in the strand 11 constituting the core wire end portion 14.

以下の説明では、素線露出部16のうち、芯線圧着部22よりも端子接続部21側から露出する部分を「接続部側露出部16a」といい、芯線圧着部22よりも被覆圧着部23側から露出する部分を「被覆側露出部16b」という。端子20において、芯線圧着部22よりも端子接続部21側の部分は、連結部28である。したがって接続部側露出部16aは、素線11のうち、端子20の連結部28で露出する部分であり、素線先端部に相当する。端子20が電線10に圧着されている状態において、端子20の端子接続部21と、電線10の接続部側露出部16aとは、接しておらず、端子20の長手方向に離隔して配設されている。   In the following description, a portion of the exposed wire portion 16 that is exposed from the terminal connection portion 21 side relative to the core wire crimp portion 22 is referred to as a “connection portion side exposed portion 16a”, and the covering crimp portion 23 rather than the core wire crimp portion 22. The portion exposed from the side is referred to as “covered exposed portion 16b”. In the terminal 20, a portion closer to the terminal connecting portion 21 than the core wire crimping portion 22 is a connecting portion 28. Therefore, the connection part side exposed part 16a is a part exposed in the connection part 28 of the terminal 20 among the strands 11, and is corresponded to the strand front-end | tip part. In a state where the terminal 20 is crimped to the electric wire 10, the terminal connection portion 21 of the terminal 20 and the connection portion side exposed portion 16 a of the electric wire 10 are not in contact with each other and are spaced apart in the longitudinal direction of the terminal 20. Has been.

前述のように本実施の形態では、電線10の素線11と、端子20とは、異種金属で構成されている。具体的には、電線10の素線11は、アルミニウムまたはアルミニウム合金で構成され、端子20は、銅板もしくは黄銅などの銅合金板、またはこれらの錫めっき板で構成されている。電線10の素線11を構成する金属材料と、端子20を構成する金属材料とを比較すると、端子20を構成する金属材料よりも、素線11を構成する金属材料の方が、標準電極電位が低い関係にある。この関係下で、端子20の芯線圧着部22と、電線10の芯線端部14との接触部分に水分、たとえば塩水などの電解質水溶液が付着すると、素線露出部16に電食が発生し、電線10が腐食するおそれがある。   As described above, in the present embodiment, the wire 11 of the electric wire 10 and the terminal 20 are made of different metals. Specifically, the strand 11 of the electric wire 10 is comprised with aluminum or aluminum alloy, and the terminal 20 is comprised with copper alloy plates, such as a copper plate or brass, or these tin plating plates. Comparing the metal material constituting the strand 11 of the electric wire 10 and the metal material constituting the terminal 20, the metal material constituting the strand 11 is more standard electrode potential than the metal material constituting the terminal 20. Is in a low relationship. Under this relationship, when an aqueous electrolyte solution such as salt water adheres to the contact portion between the core wire crimping portion 22 of the terminal 20 and the core wire end portion 14 of the electric wire 10, electrolytic corrosion occurs in the exposed wire portion 16. The electric wire 10 may corrode.

端子付き電線1では、素線露出部16への電食の発生を防ぐために、防食剤31が塗布されて、防食部30が形成されている。防食剤31は、素線露出部16を覆うように塗布される。本実施の形態では、防食剤31は、電線10の素線露出部16と、素線露出部16に隣接する端子20の芯線圧着部22、被覆圧着部23および底部25と、電線10の被覆端部15とにわたって、塗布される。防食部30は、電線12の一端部で露出する素線11である素線露出部16を覆い、素線11を防食する。   In the electric wire with terminal 1, the anticorrosive agent 31 is applied to form the anticorrosion part 30 in order to prevent the occurrence of electrolytic corrosion on the exposed wire part 16. The anticorrosive 31 is applied so as to cover the exposed wire portion 16. In the present embodiment, the anticorrosive 31 includes the exposed wire portion 16 of the electric wire 10, the core wire crimping portion 22, the covering crimping portion 23 and the bottom portion 25 of the terminal 20 adjacent to the exposed wire portion 16, and the covering of the electric wire 10. It is applied over the end 15. The anticorrosion part 30 covers the element | wire exposed part 16 which is the element | wire 11 exposed at the one end part of the electric wire 12, and carries out anticorrosion of the strand 11. FIG.

防食剤31としては、熱可塑性樹脂が用いられる。防食剤31の具体例としては、ポリアミド樹脂およびエポキシ樹脂が挙げられる。防食剤31は、たとえば、加熱されて溶融して液体となった状態で塗布される。塗布された防食剤31が凝固すると、防食部30が完成する。   A thermoplastic resin is used as the anticorrosive agent 31. Specific examples of the anticorrosive agent 31 include polyamide resins and epoxy resins. The anticorrosive agent 31 is applied in a state of being heated and melted to become a liquid, for example. When the applied anticorrosive 31 is solidified, the anticorrosion part 30 is completed.

図4は、図1に示す端子付き電線1の連結部28付近を拡大して模式的に示す斜視断面図である。図4では、導通阻害部26が設けられていない場合を示す。前述のように本実施の形態では、防食部30を設けているが、防食部30と、素線露出部16の先端、すなわち接続部側露出部16aとの間の距離dは短いので、塩水などの電解質水溶液の付着によって端子20の腐食が進行すると、防食部30の内部まで電解質水溶液が入り込み、素線露出部16に到達してしまう。   FIG. 4 is an enlarged perspective sectional view schematically showing the vicinity of the connecting portion 28 of the terminal-attached electric wire 1 shown in FIG. In FIG. 4, the case where the conduction | electrical_connection inhibition part 26 is not provided is shown. As described above, in this embodiment, the anticorrosion part 30 is provided, but since the distance d between the anticorrosion part 30 and the tip of the bare wire exposed part 16, that is, the connection part side exposed part 16a, is short, When the corrosion of the terminal 20 proceeds due to the adhesion of the electrolyte aqueous solution such as the electrolyte aqueous solution, the electrolyte aqueous solution enters the inside of the anticorrosion portion 30 and reaches the bare wire exposed portion 16.

たとえば、端子20が、銅または黄銅などの銅合金から成る母材に錫(Sn)めっきを施した板材を打ち抜いて成形される場合、板材の厚み方向両側の表面(以下「Snめっき面」という場合がある)60は、Snめっきが施された状態になっているが、打ち抜かれて露出した端子20の端面(以下「端子端面」という場合がある)20aでは、母材である銅または黄銅などの銅合金が露出している。   For example, when the terminal 20 is formed by stamping a base material made of a copper alloy such as copper or brass and plated with tin (Sn), surfaces on both sides in the thickness direction of the plate material (hereinafter referred to as “Sn plated surface”). 60 is in a state where Sn plating is applied, but the end surface of the terminal 20 exposed by punching (hereinafter sometimes referred to as “terminal end surface”) 20a is copper or brass as a base material. The copper alloy is exposed.

この状態の端子20に、塩水などの電解質水溶液が付着すると、端子端面20aとSnめっき面60との界面61で電食が発生し、Snめっきが腐食する。さらに端子端面20aとSnめっき面60と防食部30との境界部62からSnめっきが腐食し、境界部62から放射状に防食部30の内部に腐食が進行する。Snめっきの腐食が進行すると、塩水などの電解質溶液が防食部30の内部に入り込み、素線露出部16に到達する。これによって、素線露出部16の先端付近63から、素線11を構成するアルミニウムの腐食が発生し、電線が腐食するという問題が生じる。   When an aqueous electrolyte solution such as salt water adheres to the terminal 20 in this state, electrolytic corrosion occurs at the interface 61 between the terminal end face 20a and the Sn plating surface 60, and the Sn plating corrodes. Furthermore, Sn plating corrodes from the boundary part 62 of the terminal end surface 20a, the Sn plating surface 60, and the anticorrosion part 30, and corrosion progresses radially inside the anticorrosion part 30 from the boundary part 62. As the corrosion of the Sn plating proceeds, an electrolyte solution such as salt water enters the anticorrosion portion 30 and reaches the exposed wire portion 16. As a result, corrosion of the aluminum constituting the wire 11 occurs from the vicinity of the tip 63 of the exposed wire portion 16, and the electric wire is corroded.

そこで本実施の形態では、前述の図1および図2に示すように、素線先端部である接続部側露出部16aと連結部28との導通を阻害する導通阻害部26を設けている。導通阻害部26は、防食部30内に設けられ、接続部側露出部16aと連結部28との間に介在される。本実施の形態では、導通阻害部26は、絶縁性材料から成る絶縁フィルムによって実現される。   Therefore, in the present embodiment, as shown in FIGS. 1 and 2 described above, the conduction inhibiting portion 26 that inhibits the conduction between the connecting portion-side exposed portion 16a that is the wire tip portion and the connecting portion 28 is provided. The conduction hindering part 26 is provided in the anticorrosion part 30 and is interposed between the connection part side exposed part 16a and the coupling part 28. In the present embodiment, the conduction inhibiting part 26 is realized by an insulating film made of an insulating material.

図5は、図1に示す端子付き電線1の連結部28付近の長手方向に垂直な断面構成を示す断面図である。図6は、図1に示す端子付き電線1の連結部28付近を拡大して模式的に示す斜視断面図である。図7は、導通阻害部26と端子20との位置関係を模式的に示す斜視図である。図7では、理解を容易にするために、端子20の芯線圧着部22以外の部分は記載を省略する。   FIG. 5 is a cross-sectional view showing a cross-sectional configuration perpendicular to the longitudinal direction in the vicinity of the connecting portion 28 of the terminal-attached electric wire 1 shown in FIG. FIG. 6 is an enlarged perspective sectional view schematically showing the vicinity of the connecting portion 28 of the terminal-attached electric wire 1 shown in FIG. FIG. 7 is a perspective view schematically showing the positional relationship between the conduction inhibiting unit 26 and the terminal 20. In FIG. 7, in order to facilitate understanding, description of portions other than the core wire crimping portion 22 of the terminal 20 is omitted.

導通阻害部26を設けることによって、端子20の腐食、たとえばSnめっきの腐食が進行しても、腐食した部分が素線11に接触すること、具体的には電気的に接続されることを回避することができる。たとえば、端子20の腐食によって、塩水などの電解質溶液が防食部30の内部に入り込んだとしても、電解質溶液は、導通阻害部26と端子20の連結部28との間に入り込むので、素線11には到達しにくい。これによって、素線11の先端部、すなわち接続部側露出部16a付近での腐食の発生を抑制することができ、電線12の腐食を可及的に遅延させることができる。   By providing the conduction hindering portion 26, even if the corrosion of the terminal 20, for example, the corrosion of Sn plating progresses, it is avoided that the corroded portion comes into contact with the element wire 11, specifically, is electrically connected. can do. For example, even if an electrolyte solution such as salt water enters the interior of the anticorrosion part 30 due to corrosion of the terminal 20, the electrolyte solution enters between the conduction inhibiting part 26 and the connection part 28 of the terminal 20. It is hard to reach. As a result, it is possible to suppress the occurrence of corrosion near the tip of the wire 11, that is, in the vicinity of the connection portion exposed portion 16 a, and to delay the corrosion of the electric wire 12 as much as possible.

このような本実施の形態の端子付き電線1は、自動車用ワイヤーハーネスの電線として好適である。自動車では、外部から水分、たとえば塩水などの電解質水溶液が侵入しやすく、侵入した水分が、端子20と電線10の素線11との接触部分に付着する可能性がある。本実施の形態の端子付き電線1では、端子20と素線11との接触部分である素線露出部16が防食部30で覆われており、かつ防食部30内で接続部側露出部16aと連結部28との間に介在されて導通阻害部26が設けられている。したがって、外部から水分が侵入してきても、水分が端子20と素線11との接触部分に付着することを防ぎ、素線11の電食を防ぐことができる。   Such a terminal-attached electric wire 1 of this Embodiment is suitable as an electric wire of a wire harness for motor vehicles. In an automobile, water, for example, an aqueous electrolyte solution such as salt water easily enters from outside, and the intruded water may adhere to a contact portion between the terminal 20 and the wire 11 of the electric wire 10. In the terminal-attached electric wire 1 of the present embodiment, the exposed wire portion 16 that is a contact portion between the terminal 20 and the wire 11 is covered with the anticorrosion portion 30, and the connection portion side exposed portion 16 a in the anticorrosion portion 30. And the connection part 28 are provided between the connection part 28 and the conduction inhibiting part 26. Therefore, even if moisture enters from the outside, it is possible to prevent moisture from adhering to the contact portion between the terminal 20 and the wire 11 and to prevent electrolytic corrosion of the wire 11.

端子付き電線1は、以下のようにして製造される。本発明の実施の他の形態である端子付き電線1の製造方法は、端子20を準備する準備工程と、準備した端子20を電線10に圧着する圧着工程と、素線露出部16に防食剤31を塗布して、防食部30を形成する防食部形成工程とを含む。   The electric wire 1 with a terminal is manufactured as follows. The manufacturing method of the terminal-attached electric wire 1 according to another embodiment of the present invention includes a preparation step for preparing the terminal 20, a crimping step for crimping the prepared terminal 20 to the electric wire 10, and an anticorrosive agent for the exposed wire portion 16. The anticorrosion part formation process of apply | coating 31 and forming the anticorrosion part 30 is included.

準備工程では、前述の図1〜図3に示す端子20を準備する。端子20は、導電性金属板から成形される。たとえば、導電性金属板を打ち抜き加工およびプレス加工などによって、所定の形状に成形した後、曲げ加工を施して屈曲することによって、端子20が製造される。   In the preparation step, the terminal 20 shown in FIGS. 1 to 3 is prepared. The terminal 20 is formed from a conductive metal plate. For example, after the conductive metal plate is formed into a predetermined shape by punching and pressing, the terminal 20 is manufactured by bending and bending the conductive metal plate.

圧着工程では、端子20に電線10を圧着する。具体的には、まず、電線10の一端部の被覆部13を剥がして芯線12を露出させる。次いで、芯線12が露出した電線10を、芯線端部14が、端子20の芯線圧着部22の一対の圧着片22a,22bで包込まれ、被覆端部15が、端子20の被覆圧着部23の一対の圧着片23a,23bで包込まれるように載置する。このとき、芯線端部14のうち、接続部側露出部16aとなる部分に絶縁フィルムを巻き付けておく。次いで、芯線圧着部22および被覆圧着部23を加締めて圧着する。先に巻き付けた絶縁フィルムが、導通阻害部26となる。このようにして電線10を固定すると、防食部形成工程に移行する。   In the crimping step, the electric wire 10 is crimped to the terminal 20. Specifically, first, the covering portion 13 at one end of the electric wire 10 is peeled to expose the core wire 12. Next, the electric wire 10 with the core wire 12 exposed is covered with a pair of crimping pieces 22 a and 22 b of the core wire crimping portion 22 of the terminal 20, and the coated end portion 15 is covered with the coated crimping portion 23 of the terminal 20. It mounts so that it may be enclosed with a pair of crimping | compression-bonding pieces 23a and 23b. At this time, an insulating film is wound around a portion of the core wire end portion 14 that becomes the connection portion side exposed portion 16a. Subsequently, the core wire crimping part 22 and the covering crimping part 23 are crimped and crimped. The insulating film wound first becomes the conduction inhibiting part 26. When the electric wire 10 is fixed in this way, the process proceeds to the anticorrosion part forming step.

防食部形成工程では、端子20の素線露出部16を覆うように、防食剤31を塗布し、防食部30を形成する。本実施の形態では、電線10の素線露出部16と、素線露出部16に隣接する端子20の芯線圧着部22、被覆圧着部23および底部25と、電線10の被覆端部15とを覆うように、防食剤31を塗布する。このとき、導通阻害部26についても防食剤31で覆われるように、防食剤31を塗布する。   In the anticorrosion portion forming step, the anticorrosion agent 31 is applied so as to cover the exposed wire portion 16 of the terminal 20 to form the anticorrosion portion 30. In the present embodiment, the exposed wire portion 16 of the electric wire 10, the core wire crimping portion 22, the coated crimping portion 23 and the bottom portion 25 of the terminal 20 adjacent to the exposed wire portion 16, and the covered end portion 15 of the electric wire 10. The anticorrosive agent 31 is applied so as to cover it. At this time, the anticorrosive agent 31 is applied so that the conduction inhibiting portion 26 is also covered with the anticorrosive agent 31.

防食剤31を塗布するときには、防食剤31を加熱して溶融させ、液体となった状態で塗布する。このようにして防食剤31を塗布した後、冷却して凝固させ、防食部30を形成する。これによって、前述の図1に示す端子付き電線1が得られる。防食剤31は、導通阻害部26を覆うように塗布されるので、導通阻害部26は防食部30内に配設される。   When the anticorrosive agent 31 is applied, the anticorrosive agent 31 is heated to melt and applied in a liquid state. Thus, after apply | coating the anticorrosion agent 31, it cools and solidifies and the anticorrosion part 30 is formed. As a result, the terminal-attached electric wire 1 shown in FIG. 1 is obtained. Since the anticorrosive agent 31 is applied so as to cover the conduction inhibiting part 26, the conduction inhibiting part 26 is disposed in the corrosion preventing part 30.

本実施の形態によれば、圧着工程において、素線11の接続部側露出部16aとなる部分に絶縁フィルムを巻き付けて圧着を行い、防食部形成工程において、絶縁フィルムから成る導通阻害部26を含めて素子露出部16を覆うように、防食部30を形成する。これによって、防食部30内で接続部側露出部16aと連結部28との間に介在する絶縁フィルムを導通阻害部26として備える端子付き電線1を得ることができる。   According to the present embodiment, in the crimping step, the insulating film is wound around the portion that becomes the connection portion side exposed portion 16a of the wire 11 to perform crimping, and in the anticorrosion portion forming step, the conduction inhibiting portion 26 made of the insulating film is formed. The anticorrosion part 30 is formed so that the element exposure part 16 may be covered. Thereby, the electric wire 1 with a terminal provided with the insulating film interposed between the connection part side exposed part 16a and the connection part 28 in the anticorrosion part 30 as the conduction inhibiting part 26 can be obtained.

以上に述べた本実施の形態では、圧着工程において、絶縁フィルムを素線11に巻き付けて圧着を行っているが、これに限定されない。たとえば、端子20側に絶縁フィルムを置いて圧着を行ってもよい。この場合、端子20のうちで、素線11の接続部側露出部16aに接する部分となる部分、すなわち端子20の連結部28と芯線圧着部22とにわたって、絶縁フィルムを置き、その上に素線11を置いて圧着を行えばよい。   In this Embodiment described above, in the crimping | compression-bonding process, although the insulating film is wound around the strand 11 and crimping is performed, it is not limited to this. For example, an insulating film may be placed on the terminal 20 side for crimping. In this case, an insulating film is placed over a portion of the terminal 20 that is in contact with the connection portion exposed portion 16a of the strand 11, that is, the connecting portion 28 of the terminal 20 and the core crimping portion 22, and the element is placed thereon. The wire 11 may be placed and crimped.

また本実施の形態では、導通阻害部26は、絶縁フィルムによって構成されるが、これに限定されない。図8および図9は、導通阻害部の他の例を示す図である。図8は、他の例の導通阻害部26Aを備える端子付き電線1Aの構成を示す斜視断面図であり、図9は、他の例の導通阻害部26Aを備える端子付き電線1Aの構成を示す斜視図である。図8は、前述の図6と同様に、端子付き電線1Aの連結部28付近を拡大して模式的に示す図である。図9では、理解を容易にするために、防食部30、ならびに端子20の連結部28および芯線圧着部22以外の部分は記載を省略する。   Moreover, in this Embodiment, although the conduction | electrical_connection inhibition part 26 is comprised with an insulating film, it is not limited to this. 8 and 9 are diagrams showing another example of the conduction inhibiting unit. FIG. 8 is a perspective cross-sectional view showing a configuration of a terminal-attached electric wire 1A including another example of the conduction hindering portion 26A, and FIG. 9 shows a configuration of the terminal-attached electric wire 1A including another example of the electric conduction hindering portion 26A. It is a perspective view. FIG. 8 is an enlarged view schematically showing the vicinity of the connecting portion 28 of the terminal-attached electric wire 1 </ b> A, similarly to FIG. 6 described above. In FIG. 9, in order to facilitate understanding, description of the portions other than the anticorrosion portion 30 and the connecting portion 28 of the terminal 20 and the core wire crimping portion 22 is omitted.

図8および図9に示す例では、導通阻害部26Aは、端子20の内壁に設けられる絶縁層によって実現される。この導通阻害部26Aは、端子20となる板材の導通阻害部26Aとなる部分に、絶縁材料をコーティング、すなわち塗布して絶縁層を形成することによって形成される。このようにして導通阻害部26Aが形成された板材をプレス、すなわち打ち抜き加工し、折り曲げ加工を施すことによって、導通阻害部26Aが設けられた端子20を得ることができる。   In the example shown in FIGS. 8 and 9, the conduction inhibiting portion 26 </ b> A is realized by an insulating layer provided on the inner wall of the terminal 20. This conduction hindering part 26A is formed by coating an insulating material on the portion of the plate material that becomes the terminal 20 that becomes the conduction hindering part 26A, that is, by applying an insulating material to form an insulating layer. Thus, the terminal 20 provided with the conduction inhibiting portion 26A can be obtained by pressing, that is, punching, and bending the plate material on which the conduction inhibiting portion 26A is formed.

このように板材の段階で導通阻害部26Aを設けておくことによって、圧着工程において、電線12を圧着するときの作業を容易にすることができる。   Thus, by providing the conduction inhibiting portion 26A at the stage of the plate material, the work when crimping the electric wire 12 can be facilitated in the crimping step.

このように板材の段階で設ける導通阻害部26Aとしては、絶縁層に限定されず、絶縁フィルムを用いてもよい。この場合、端子20となる板材の導通阻害部26Aとなる部分に、絶縁フィルムを貼り付けた後、板材をプレスして折り曲げ加工を施すことによって、導通阻害部26Aが設けられた端子20を得ることができる。   As described above, the conduction inhibiting portion 26A provided at the stage of the plate material is not limited to the insulating layer, and an insulating film may be used. In this case, after affixing an insulating film to the portion of the plate material that becomes the terminal 20 that becomes the conduction inhibiting portion 26A, the plate material is pressed and bent to obtain the terminal 20 provided with the conduction inhibiting portion 26A. be able to.

絶縁フィルムで導通阻害部26Aを構成することによって、絶縁層のコーティングによって導通阻害部26Aを構成する場合に比べて、厚い導通阻害部26Aを容易に実現することができるので、防食性を向上させることができる。   By configuring the conduction hindering part 26A with an insulating film, the thick conduction hindering part 26A can be easily realized as compared with the case where the conduction hindering part 26A is configured by coating an insulating layer, thereby improving the corrosion resistance. be able to.

以上のように導通阻害部26Aは、板材の段階で設けておいてもよいが、防食性の観点からは、本実施の形態のように、端子20を組み立てた後に設ける方がより好ましい。端子20を組み立てた後に導通阻害部26を設けることによって、たとえば板材の折り曲げ加工のときに、導通阻害部26にクラックが生じることを防ぎ、防食性の低下を防ぐことができる。   As described above, the conduction-inhibiting portion 26A may be provided at the stage of the plate material. However, from the viewpoint of corrosion resistance, it is more preferable to provide the conduction-inhibiting portion 26A after assembling the terminal 20 as in the present embodiment. By providing the conduction inhibiting portion 26 after the terminal 20 is assembled, for example, when the plate material is bent, it is possible to prevent the conduction inhibiting portion 26 from being cracked and to prevent the corrosion resistance from being lowered.

また以上に述べた実施の形態では、導通阻害部26,26Aは、絶縁材料によって構成される。絶縁材料としては、絶縁テープおよびゴム等といった絶縁材料であって、かつ屈曲可能なものであれば、導通阻害部26,26Aに用いてもよい。また導通阻害部26,26Aを構成する材料は、絶縁材料に限定されない。たとえば、素線11を構成する材料よりも標準電極電位が高い金属によって構成されてもよい。この場合、前述の絶縁フィルムに代えて、たとえば素線11を構成する材料よりも標準電極電位が高い金属から成る金属箔を用いて、金属箔を素線11に巻き付けて圧着するか、端子20に置いて圧着すればよい。また板材に金属箔を貼り付けた後、端子20を組み立てるようにしてもよい。   Moreover, in embodiment mentioned above, the conduction | electrical_connection inhibition parts 26 and 26A are comprised with the insulating material. As an insulating material, an insulating material such as an insulating tape and rubber may be used for the conduction inhibiting portions 26 and 26A as long as it can be bent. Moreover, the material which comprises the conduction | electrical_connection inhibition parts 26 and 26A is not limited to an insulating material. For example, you may comprise with the metal whose standard electrode electric potential is higher than the material which comprises the strand 11. FIG. In this case, instead of the above-described insulating film, for example, a metal foil made of a metal having a higher standard electrode potential than the material constituting the element wire 11 is used, and the metal foil is wound around the element wire 11 and is crimped. It can be placed and crimped. Alternatively, the terminal 20 may be assembled after the metal foil is attached to the plate material.

以上に述べた実施の形態では、芯線圧着部22は、互いに対向する一対の圧着片22a,22bで電線10の芯線端部14に圧着される場合を説明したが、これに限られるものではない。芯線圧着部22は、たとえば、互いに対向する一対の圧着片を2組有し、これらが長手方向に離隔して設けられる構成であってもよい。この場合、圧着片同士の間から露出する素線11の部分も素線露出部16となる。このように素線露出部16の位置は、芯線圧着部22による端部14の圧着態様によって異なる。   In the embodiment described above, the core wire crimping portion 22 has been described as being crimped to the core wire end portion 14 of the electric wire 10 by a pair of crimping pieces 22a and 22b facing each other, but is not limited thereto. . The core wire crimping part 22 may have a configuration in which, for example, two pairs of crimping pieces facing each other are provided and separated in the longitudinal direction. In this case, the portion of the strand 11 exposed from between the crimping pieces also becomes the strand exposed portion 16. As described above, the position of the exposed wire portion 16 differs depending on the crimping mode of the end 14 by the core crimping portion 22.

また以上に述べた実施の形態では、電線10の芯線12を構成する素線11は、アルミニウム線またはアルミニウム合金線であるが、これに限定されず、他の金属材料で形成されたものであってもよい。また端子20を構成する導電性金属板は、銅板もしくは銅合金板、またはこれらの錫めっき板であるが、これに限定されず、他の金属材料で形成されたものであってもよい。本発明の端子20および端子付き電線1は、端子20を構成する金属材料よりも、素線11を構成する金属材料の方が、標準電極電位が低い関係にある場合に好適である。   Further, in the embodiment described above, the element wire 11 constituting the core wire 12 of the electric wire 10 is an aluminum wire or an aluminum alloy wire, but is not limited to this, and is formed of another metal material. May be. Moreover, although the electroconductive metal plate which comprises the terminal 20 is a copper plate, a copper alloy plate, or these tin plating plates, it is not limited to this, You may be formed with another metal material. The terminal 20 and the electric wire 1 with a terminal of the present invention are suitable when the metal material constituting the strand 11 has a lower standard electrode potential than the metal material constituting the terminal 20.

1 端子付き電線
10 電線
11 素線
12 芯線
13 被覆部
14 芯線端部
15 被覆端部
16 素線露出部
20 端子
21 端子接続部
22 芯線圧着部
23 被覆圧着部
24 接触片
26 導通阻害部
28 連結部
30 防食部
31 防食剤
40 接続相手端子
DESCRIPTION OF SYMBOLS 1 Electric wire with a terminal 10 Electric wire 11 Elementary wire 12 Core wire 13 Covering part 14 Core wire end part 15 Covering end part 16 Elementary wire exposed part 20 Terminal 21 Terminal connection part 22 Core wire crimping part 23 Covering crimping part 24 Contact piece 26 Conduction inhibition part 28 Connection Part 30 Anticorrosion part 31 Anticorrosive 40 Connection partner terminal

Claims (4)

電線と、
前記電線に圧着される端子であって、(a)接続相手となる接続相手端子に電気的に接続される端子接続部、(b)前記電線の一端部で露出する素線に圧着されて、前記素線に電気的に接続される電線圧着部、および(c)前記端子接続部と前記電線圧着部とを一体に連結する連結部を備える端子と、
前記電線の一端部で露出する素線を覆い、前記素線を防食する防食部と、
前記防食部内に設けられ、前記素線のうち前記端子の連結部で露出する素線先端部と、前記連結部との間に介在され、前記素線先端部と前記連結部との導通を阻害する導通阻害部とを備えることを特徴とする端子付き電線。
Electric wires,
A terminal to be crimped to the electric wire, (a) a terminal connection portion electrically connected to a connection counterpart terminal to be connected; (b) crimped to a wire exposed at one end of the electric wire; A wire crimping part electrically connected to the element wire, and (c) a terminal provided with a connecting part for integrally coupling the terminal connection part and the wire crimping part;
Covering the exposed wire at one end of the electric wire, and anticorrosion part for anticorrosion of the wire,
Provided in the anticorrosion part, interposed between the connecting part and the leading end part of the element wire that is exposed at the connecting part of the terminal, and inhibits conduction between the leading end part of the strand and the connecting part. The electric wire with a terminal provided with the conduction inhibition part which performs.
前記導通阻害部は、絶縁性材料から成る絶縁フィルムによって構成されることを特徴とする請求項1に記載の端子付き電線。   2. The terminal-attached electric wire according to claim 1, wherein the conduction-inhibiting portion is constituted by an insulating film made of an insulating material. 一端部で素線が露出する電線と、前記電線に圧着される端子とを備える端子付き電線の製造方法であって、
前記端子を準備する準備工程と、
前記準備工程で準備した前記端子を前記電線に圧着する圧着工程と、
前記圧着工程で前記端子が圧着された前記電線に防食部を形成する防食部形成工程とを備え、
前記準備工程では、(a)接続相手となる接続相手端子に電気的に接続される端子接続部、(b)前記電線の一端部で露出する素線に圧着されて、前記素線に電気的に接続される電線圧着部、および(c)前記端子接続部と前記電線圧着部とを一体に連結する連結部とを備える端子を準備し、
前記圧着工程では、前記素線のうち前記端子の連結部で露出する素線先端部と前記連結部との間に絶縁フィルムを介在させて、前記準備工程で準備した前記端子の前記電線圧着部を前記素線に圧着して電気的に接続し、
前記防食部形成工程では、前記電線の一端部で露出する素線と前記絶縁フィルムとを覆うように、防食部を形成することを特徴とする端子付き電線の製造方法。
A method of manufacturing an electric wire with a terminal, comprising: an electric wire with an element wire exposed at one end; and a terminal crimped to the electric wire,
A preparation step of preparing the terminal;
A crimping step of crimping the terminal prepared in the preparation step to the electric wire;
An anticorrosion part forming step of forming an anticorrosion part on the electric wire on which the terminal is crimped in the crimping process,
In the preparation step, (a) a terminal connection portion that is electrically connected to a connection partner terminal that is a connection partner, and (b) a wire that is crimped to an exposed wire at one end of the electric wire, Preparing a terminal comprising a wire crimping portion connected to the wire, and (c) a connecting portion for integrally coupling the terminal connection portion and the wire crimping portion,
In the crimping step, the wire crimping portion of the terminal prepared in the preparation step by interposing an insulating film between the coupling tip and the wire tip exposed at the coupling portion of the terminal among the strands. Is crimped to the wire and electrically connected,
In the said anti-corrosion part formation process, an anti-corrosion part is formed so that the strand exposed at the one end part of the said electric wire and the said insulating film may be formed, The manufacturing method of the electric wire with a terminal characterized by the above-mentioned.
一端部で素線が露出する電線と、前記電線に圧着される端子とを備える端子付き電線の製造方法であって、
前記端子を準備する準備工程と、
前記準備工程で準備した前記端子を前記電線に圧着する圧着工程と、
前記圧着工程で前記端子が圧着された前記電線に防食部を形成する防食部形成工程とを備え、
前記準備工程では、(a)接続相手となる接続相手端子に電気的に接続される端子接続部、(b)前記電線の一端部で露出する素線に圧着されて、前記素線に電気的に接続される電線圧着部、および(c)前記端子接続部と前記電線圧着部とを一体に連結する連結部とを備える端子を準備し、前記素線のうち前記端子の連結部で露出する素線先端部に接触する部分と前記連結部との間に導通阻害部を設け、
前記圧着工程では、前記準備工程で準備した前記端子の前記電線圧着部を前記素線に圧着して電気的に接続し、
前記防食部形成工程では、前記電線の一端部で露出する素線と前記導通阻害部とを覆うように、防食部を形成することを特徴とする端子付き電線の製造方法。
A method of manufacturing an electric wire with a terminal, comprising: an electric wire with an element wire exposed at one end; and a terminal crimped to the electric wire,
A preparation step of preparing the terminal;
A crimping step of crimping the terminal prepared in the preparation step to the electric wire;
An anticorrosion part forming step of forming an anticorrosion part on the electric wire on which the terminal is crimped in the crimping process,
In the preparation step, (a) a terminal connection portion that is electrically connected to a connection partner terminal that is a connection partner, and (b) a wire that is crimped to an exposed wire at one end of the electric wire, A terminal including a wire crimping portion connected to the wire, and (c) a coupling portion that integrally couples the terminal connection portion and the wire crimping portion, and is exposed at the terminal coupling portion of the strands. A conduction hindering part is provided between the connecting part and the part in contact with the wire tip,
In the crimping step, the wire crimping portion of the terminal prepared in the preparation step is crimped and electrically connected to the element wire,
In the said anti-corrosion part formation process, an anti-corrosion part is formed so that the strand exposed at the one end part of the said electric wire and the said conduction | electrical_connection inhibition part may be covered, The manufacturing method of the electric wire with a terminal characterized by the above-mentioned.
JP2010108943A 2010-05-11 2010-05-11 Wire with terminal and manufacturing method thereof Pending JP2011238465A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013089171A1 (en) * 2011-12-16 2013-06-20 株式会社オートネットワーク技術研究所 Electrical wire provided with terminal and method for producing electrical wire provided with terminal
JP2015043296A (en) * 2013-08-26 2015-03-05 矢崎総業株式会社 Connection structure of crimp terminal to electric wire
US9640877B2 (en) 2013-08-26 2017-05-02 Yazaki Corporation Connection structure of crimp terminal with respect to wire

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013089171A1 (en) * 2011-12-16 2013-06-20 株式会社オートネットワーク技術研究所 Electrical wire provided with terminal and method for producing electrical wire provided with terminal
JP2013125739A (en) * 2011-12-16 2013-06-24 Auto Network Gijutsu Kenkyusho:Kk Wire with terminal and manufacturing method therefor
JP2015043296A (en) * 2013-08-26 2015-03-05 矢崎総業株式会社 Connection structure of crimp terminal to electric wire
US9640877B2 (en) 2013-08-26 2017-05-02 Yazaki Corporation Connection structure of crimp terminal with respect to wire

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