WO2013005548A1 - Electrical cable having terminal and method for manufacturing electrical cable having terminal - Google Patents

Electrical cable having terminal and method for manufacturing electrical cable having terminal Download PDF

Info

Publication number
WO2013005548A1
WO2013005548A1 PCT/JP2012/065193 JP2012065193W WO2013005548A1 WO 2013005548 A1 WO2013005548 A1 WO 2013005548A1 JP 2012065193 W JP2012065193 W JP 2012065193W WO 2013005548 A1 WO2013005548 A1 WO 2013005548A1
Authority
WO
WIPO (PCT)
Prior art keywords
wire
terminal
core wire
crimped
core
Prior art date
Application number
PCT/JP2012/065193
Other languages
French (fr)
Japanese (ja)
Inventor
小野 純一
平井 宏樹
拓次 大塚
宮本 賢次
智也 太田
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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
Priority to JP2011-150094 priority Critical
Priority to JP2011150094A priority patent/JP2013016430A/en
Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2013005548A1 publication Critical patent/WO2013005548A1/en

Links

Images

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/28Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048Crimping apparatus or processes
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/10Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion

Abstract

Disclosed is a method for manufacturing an electrical cable (10) having a terminal, said electrical cable being provided with: an electrical cable (11) having a cable core (13) composed of a plurality of wires (15); and a female terminal (12) having a wire barrel (19) crimped to the cable core (13) exposed from the electrical cable (11). In the method, the following steps are performed: a step wherein the cable core (13) is exposed by peeling an insulating film (14) that covers the outer circumferential surface of the cable core (13); a step wherein a current is carried by sandwiching the exposed cable core (13) by means of a pair of electrodes (16, 16) in the diameter direction, and the wires (15) are integrated with each other; and a step wherein the wire barrel (19) is crimped such that the wire barrel is wound, from the outer side, on a region including the integrated region of the cable core (13).

Description

端子付き電線及び端子付き電線の製造方法Electric wire with terminal and manufacturing method of electric wire with terminal
 本発明は、端子付き電線及び端子付き電線の製造方法に関する。 The present invention relates to a wire with terminal and a method for manufacturing a wire with terminal.
 従来、端子付き電線としては特許文献1に記載のものが知られている。このものは、複数の素線からなる芯線を含む電線と、この電線から露出する芯線に端子が圧着されてなる。端子は、芯線の外側に巻き付くように圧着される圧着部を有する。芯線の外側に圧着部が巻き付くように圧着されることで、電線と端子とが電気的に接続される。 Conventionally, as an electric wire with a terminal, the one described in Patent Document 1 is known. In this case, a terminal is crimped to an electric wire including a core wire composed of a plurality of strands and a core wire exposed from the electric wire. A terminal has a crimping | compression-bonding part crimped | bonded so that it may wind around the outer side of a core wire. The wire and the terminal are electrically connected by being crimped so that the crimping portion is wound around the outside of the core wire.
特開平9-7647号公報Japanese Patent Laid-Open No. 9-7647
 上記の構成によると、芯線の外周面と、圧着部の内面とが接触することにより、芯線と圧着部とが電気的に接続されている。このとき、芯線を構成する各素線の表面に酸化膜等の、電気抵抗の大きな被膜が形成される場合には、素線の表面に形成された被膜により素線同士が電気的に十分に接続できないことが懸念される。すると、芯線と圧着部との電気的な接続に寄与するのは、芯線の径方向外側に位置して圧着部の内面と接触する素線のみとなってしまい、芯線の径方向内側に位置する素線が、圧着部との電気的な接続に寄与しなくなる。この結果、電線と端子との間の電気抵抗が大きくなる。 According to the above configuration, the core wire and the crimping portion are electrically connected to each other by contacting the outer peripheral surface of the core wire and the inner surface of the crimping portion. At this time, when a film having a large electric resistance, such as an oxide film, is formed on the surface of each strand constituting the core wire, the strands are sufficiently electrically connected to each other by the coating formed on the surface of the strand. Concerned about being unable to connect. Then, only the strands that are located on the radially outer side of the core wire and contact the inner surface of the crimped portion contribute to the electrical connection between the core wire and the crimped portion, and are located on the radially inner side of the core wire. The strands do not contribute to the electrical connection with the crimping part. As a result, the electrical resistance between the electric wire and the terminal is increased.
 特に、素線がアルミニウム製で端子が銅合金製の場合には、圧着部がヒートサイクルを受けると両金属の熱膨張率の相違に起因して圧着部の固着強度が徐々に低下することが懸念されている。また、圧着部が円筒形をなしている、いわゆるクローズドバレルの構造を採用すると、大きく圧縮した場合には円筒形のバレルに亀裂が生じて圧着不良を発生させ、かといって緩めの圧縮に抑えれば、アルミニウム素線の表面に形成されている絶縁性の酸化膜を十分に破壊することができず、結局、電気抵抗の増大を来してしまう。 In particular, when the wire is made of aluminum and the terminal is made of a copper alloy, when the crimping part is subjected to a heat cycle, the fixing strength of the crimping part gradually decreases due to the difference in thermal expansion coefficient between the two metals. There are concerns. In addition, when a so-called closed barrel structure is used in which the crimping part has a cylindrical shape, cracks occur in the cylindrical barrel when compressed to a large extent, resulting in poor crimping, but it suppresses loose compression. As a result, the insulating oxide film formed on the surface of the aluminum element wire cannot be sufficiently destroyed, resulting in an increase in electrical resistance.
 本発明は上記のような事情に基づいて完成されたものであって、電線と端子との間の電気抵抗を低減できる端子付き電線及び端子付き電線の製造方法を提供することを目的とする。 The present invention has been completed based on the above-described circumstances, and an object thereof is to provide a terminal-attached electric wire and a method of manufacturing the terminal-attached electric wire that can reduce the electric resistance between the electric wire and the terminal.
 本発明は、複数の素線からなる芯線を有する電線と、前記電線から露出する前記芯線に圧着される圧着部を有する端子と、を備えた端子付き電線の製造方法であって、前記芯線の外周面を覆う絶縁被覆を剥離して前記芯線を露出させる工程と、露出した前記芯線を一対の電極で径方向に挟んで前記芯線に通電することで前記芯線をその融点以下に加熱しつつ圧力を作用させて前記複数の素線を互いに一体化する工程と、前記芯線のうち、前記複数の素線が一体化された一体化領域を含む領域に前記圧着部を外側から巻き付けるようにして前記芯線に圧着する工程と、を実行する。 The present invention is a method of manufacturing a terminal-attached electric wire comprising: an electric wire having a core wire composed of a plurality of strands; and a terminal having a crimping portion that is crimped to the core wire exposed from the electric wire, Peeling the insulation coating covering the outer peripheral surface to expose the core wire, and energizing the core wire by sandwiching the exposed core wire in a radial direction with a pair of electrodes, while heating the core wire to below its melting point, pressure And the step of integrating the plurality of strands with each other, and the crimping portion is wound from the outside around the core wire in a region including an integrated region in which the plurality of strands are integrated. And a step of crimping to the core wire.
 また、本発明は、複数の素線からなる芯線を含む電線と、前記電線から露出する前記芯線に圧着される端子と、を備えた端子付き電線であって、前記電線から露出する芯線には、その径方向に通電してその融点以下に加熱しつつ圧力を作用させることで前記複数の素線が互いに一体化された一体化領域が形成されており、前記端子は前記芯線の外側に巻き付くように圧着される圧着部を有しており、前記圧着部は、前記芯線のうち前記一体化領域を含む領域に圧着されている。 Further, the present invention is an electric wire with a terminal including an electric wire including a core wire composed of a plurality of strands, and a terminal crimped to the core wire exposed from the electric wire, and the core wire exposed from the electric wire includes An integrated region in which the plurality of strands are integrated with each other is formed by applying a pressure while applying current in the radial direction and heating to below the melting point, and the terminal is wound around the outside of the core wire. A crimping part that is crimped so as to be attached is provided, and the crimping part is crimped to an area including the integrated area in the core wire.
 本発明によれば、素線同士は径方向に通電されて加熱されることで互いに一体化し、電気的に確実に接続される。これにより、端子を芯線に圧着したときに、芯線の径方向内方に位置する素線が、電線と端子との間の電気的な接続に確実に寄与することができるので、電線と端子との間の電気抵抗を小さくすることができる。 According to the present invention, the strands are integrated with each other by being energized and heated in the radial direction, and are securely connected electrically. As a result, when the terminal is crimped to the core wire, the strand positioned radially inward of the core wire can surely contribute to the electrical connection between the electric wire and the terminal. The electrical resistance between the two can be reduced.
 前記芯線のうち、前記一体化領域は、前記圧着部が圧着された被圧着領域と同一又は広く設定してもよい。 Of the core wire, the integrated region may be set to be the same as or wider than the region to be crimped to which the crimping portion is crimped.
 上記の態様によれば、芯線のうち被圧着領域に位置する領域全体に、素線同士が互いに一体化された一体化領域が形成される。この結果、芯線(素線)と端子とが一層確実に電気的に接続されるので、電線と端子との間の電気抵抗を一層小さくすることができる。 According to the above aspect, an integrated region in which the strands are integrated with each other is formed in the entire region of the core wire located in the crimped region. As a result, the core wire (element wire) and the terminal are more reliably electrically connected, so that the electrical resistance between the electric wire and the terminal can be further reduced.
 前記素線はアルミニウム又はアルミニウム合金からなり、前記端子は銅合金からなる構成としてもよい。 The element wire may be made of aluminum or an aluminum alloy, and the terminal may be made of a copper alloy.
 素線がアルミニウム又はアルミニウム合金からなる場合、素線の表面には酸化膜等の絶縁性の被膜が比較的に形成されやすいため、素線相互間の抵抗が高くなる傾向にあるが、熱と圧力で固められた一体化領域では素線相互間の抵抗が大きく低下する。さらに、電線がアルミニウム系であっても、他の回路との接続の面から端子は銅合金製とすることが好ましいが、この場合には、圧着部がヒートサイクルを受けることで芯線および端子の両金属の熱膨張率の相違に起因する圧着部の固着強度の低下ひいては素線相互間の抵抗の低下が懸念される。しかし、本発明によれば、例え固着強度が低下した場合でも、素線はそもそも一体化されているので、その素線相互間の抵抗増大ひいては電線と端子との間の抵抗増大を防止することが可能である。 When the strands are made of aluminum or an aluminum alloy, an insulating film such as an oxide film is relatively easily formed on the surface of the strands, so that the resistance between the strands tends to increase. In the integrated region solidified by pressure, the resistance between the wires is greatly reduced. Furthermore, even if the electric wire is aluminum-based, it is preferable that the terminal is made of a copper alloy from the viewpoint of connection with other circuits. In this case, the crimping part is subjected to a heat cycle so that the core wire and the terminal are There is concern about a decrease in the bonding strength of the crimped part due to the difference in thermal expansion coefficient between the two metals, and thus a decrease in resistance between the strands. However, according to the present invention, even if the fixing strength is reduced, the strands are integrated in the first place, so that an increase in resistance between the strands and thus an increase in resistance between the wires and terminals can be prevented. Is possible.
 本発明によれば、電線と端子との間の電気抵抗を低減させることができる。 According to the present invention, the electrical resistance between the electric wire and the terminal can be reduced.
図1は本発明の一実施形態に係る端子付き電線を示す側面図である。FIG. 1 is a side view showing a terminal-attached electric wire according to an embodiment of the present invention. 図2は雌端子を示す斜視図である。FIG. 2 is a perspective view showing a female terminal. 図3は電線の絶縁被覆が剥がされた状態を示す斜視図である。FIG. 3 is a perspective view showing a state in which the insulation coating of the electric wire has been removed. 図4は芯線が一体化された状態を示す斜視図である。FIG. 4 is a perspective view showing a state in which the core wires are integrated. 図5は芯線にワイヤーバレルが圧着される前の状態を示す斜視図である。FIG. 5 is a perspective view showing a state before the wire barrel is crimped to the core wire. 図6は図1におけるVI-VI線断面図である。6 is a cross-sectional view taken along line VI-VI in FIG. 図7は他の実施形態に記載の、芯線にワイヤーバレルが圧着される前の状態を示す斜視図である。FIG. 7 is a perspective view showing a state before the wire barrel is crimped to the core wire described in another embodiment. 図9は他の実施形態に記載の、中間スプライス構造を有する端子を示す平面図である。FIG. 9 is a plan view showing a terminal having an intermediate splice structure according to another embodiment.
 本発明の一実施形態を図1ないし図6を参照しつつ説明する。本実施形態に係る端子付き電線10は、電線11と、この電線11の端末に接続された雌端子12(記載の端子に相当)と、を備える。図1に示すように、雌端子12に接続された状態で、電線11は、図1における左右方向に延びている。 An embodiment of the present invention will be described with reference to FIGS. The electric wire with terminal 10 according to the present embodiment includes an electric wire 11 and a female terminal 12 (corresponding to the described terminal) connected to the terminal of the electric wire 11. As shown in FIG. 1, the electric wire 11 extends in the left-right direction in FIG. 1 while being connected to the female terminal 12.
(電線11)
 図1に示すように、電線11は、芯線13の外周を絶縁被覆14で包囲してなる。芯線13は、アルミニウム、若しくはアルミニウム合金、又は銅、若しくは銅合金等、必要に応じて任意の金属を用いることができる。本実施形態においてはアルミニウム合金が用いられている。芯線13は、多数の素線15を撚り合わせた撚り線からなる。電線11の端末からは、絶縁被覆14が所定の長さだけ剥がされることにより、芯線13が露出している。
(Wire 11)
As shown in FIG. 1, the electric wire 11 is formed by surrounding the outer periphery of a core wire 13 with an insulating coating 14. The core wire 13 may be made of any metal such as aluminum, aluminum alloy, copper, copper alloy, or the like as necessary. In this embodiment, an aluminum alloy is used. The core wire 13 is formed of a stranded wire obtained by twisting a large number of strands 15. The core wire 13 is exposed from the end of the electric wire 11 by peeling off the insulating coating 14 by a predetermined length.
 図4に示すように、本実施形態においては、電線11から露出する芯線13を構成する複数の素線15は、その径方向に一対の電極16,16によって図4に記載された矢線で示す方向から挟まれて、加圧されつつ通電され、芯線の融点以下に加熱される。通電部分には複数の素線15が一体化された一体化領域17が形成される。 As shown in FIG. 4, in this embodiment, the some strand 15 which comprises the core wire 13 exposed from the electric wire 11 is the arrow line described in FIG. 4 by the pair of electrodes 16 and 16 in the radial direction. It is sandwiched from the direction shown, energized while being pressurized, and heated below the melting point of the core wire. An integrated region 17 in which a plurality of strands 15 are integrated is formed in the energized portion.
(雌端子12)
 雌端子12は、図示しない銅合金製の板材を所定形状にプレス成形してなる。雌端子12は、電線11の絶縁被覆14に外側から巻き付くように圧着される一対のインシュレーションバレル18が形成されている。インシュレーションバレル18の図1における左方に位置には、インシュレーションバレル18に連なって、電線11の芯線13に外側から巻き付くように圧着されるワイヤーバレル19(圧着部に相当)が形成されている。
(Female terminal 12)
The female terminal 12 is formed by pressing a copper alloy plate material (not shown) into a predetermined shape. The female terminal 12 is formed with a pair of insulation barrels 18 that are crimped so as to be wound around the insulating coating 14 of the electric wire 11 from the outside. A wire barrel 19 (corresponding to a crimping portion) that is crimped so as to be wound around the core wire 13 of the electric wire 11 from the outside is formed on the left side of the insulation barrel 18 in FIG. ing.
 図1におけるワイヤーバレル19の左方の位置には、ワイヤーバレル19に連なって、図示しない相手側端子と嵌合して電気的に接続される接続部20が形成されている。本実施形態においては、相手側端子は雄端子であり、接続部20は角筒状をなして雄端子を挿入可能である。接続部20には弾性接触片21が形成されており、この弾性接触片21と雄端子とが弾性的に接触することにより、雄端子と雌端子12とが電気的に接続される。 In the left position of the wire barrel 19 in FIG. 1, there is formed a connection portion 20 that is connected to the wire barrel 19 and is electrically connected by being engaged with a mating terminal (not shown). In the present embodiment, the mating terminal is a male terminal, and the connecting portion 20 has a rectangular tube shape into which the male terminal can be inserted. An elastic contact piece 21 is formed in the connecting portion 20, and the male terminal and the female terminal 12 are electrically connected by elastically contacting the elastic contact piece 21 and the male terminal.
 図2に示すように、雌端子12のワイヤーバレル19のうち芯線13と接触する接触面22には、凹部23が形成されている。本実施形態においては、凹部23は電線11の延びる方向(図2における矢線Aで示す方向)に間隔を空けて3つ並んで形成されている。 As shown in FIG. 2, the contact surface 22 which contacts the core wire 13 among the wire barrels 19 of the female terminal 12 has a recess 23 formed therein. In the present embodiment, three recesses 23 are formed side by side in the direction in which the electric wire 11 extends (the direction indicated by the arrow A in FIG. 2).
 図1に示すように、電線11から露出した芯線13の外周には、巻き付くようにしてワイヤーバレル19が圧着されている。この芯線13には、ワイヤーバレル19が圧着される被圧着領域24が形成されている。本実施形態においては、一体化領域17は、被圧着領域24よりも、図1における左右方向について広い領域に形成されている。 As shown in FIG. 1, a wire barrel 19 is crimped around the outer periphery of the core wire 13 exposed from the electric wire 11 so as to be wound. The core wire 13 is formed with a pressure-bonded region 24 to which the wire barrel 19 is pressure-bonded. In the present embodiment, the integrated region 17 is formed in a wider area in the left-right direction in FIG.
 図6に示すように、芯線13の一体化領域17にワイヤーバレル19が巻き付くように圧着されることにより、電線11と雌端子12とが電気的に接続される。なお、図6においては、素線15の形状については省略して記載してある。 As shown in FIG. 6, the electric wire 11 and the female terminal 12 are electrically connected by being crimped so that the wire barrel 19 is wound around the integrated region 17 of the core wire 13. In FIG. 6, the shape of the wire 15 is omitted.
 続いて、端子付き電線10の製造方法の一例について説明する。まず、金属板材をプレス加工することにより、所定の形状に成形する(図2参照)。このとき、凹部23を同時に形成してもよい。 Then, an example of the manufacturing method of the electric wire 10 with a terminal is demonstrated. First, a metal plate material is pressed into a predetermined shape (see FIG. 2). At this time, you may form the recessed part 23 simultaneously.
 その後、所定形状に形成された金属板材を曲げ加工することで接続部20を形成する。このときに凹部23を形成してもよい。 Thereafter, the connecting portion 20 is formed by bending a metal plate formed in a predetermined shape. At this time, the recess 23 may be formed.
 続いて、電線11の端末において絶縁被覆14を剥がすことにより、芯線13を露出させる(図3参照)。そして図4に示すように、露出した芯線13を、一対の電極16,16でその径方向に挟み付ける。本実施形態においては、一対の電極16,16は図4における上下方向から芯線13を挟み付けるようになっている。芯線13を電極16,16で挟み付けた後、電極16によって、加圧しつつ芯線13に所定時間通電を行う。この時、芯線の温度が例えば放射温度計でアルミニウムの融点以下の300~500度の範囲内となるように、かつ、例えば100~200KgFの範囲内の圧力となる条件で通電を行うことにより、芯線13を構成する複数の素線が軟化して変形する。この際、素線表面に形成されていた絶縁性の酸化膜は破壊され、各素線の金属が露出して互いに固着しあうことにより、素線群が一体化される。このように、アルミニウムの融点以下で加熱を行うことにより、その融点以上で加熱を行う場合と比較して、電線の絶縁被覆への熱によるダメージや、芯線が熱により溶けて細くなることを防止することができる。本実施形態では、圧縮率が30%以下となると芯線が切れ易くなり、70%以上では接触抵抗が大きくなったため、圧縮率は30~70%の範囲内とすることが好ましい。 Subsequently, the core wire 13 is exposed by peeling off the insulation coating 14 at the end of the electric wire 11 (see FIG. 3). Then, as shown in FIG. 4, the exposed core wire 13 is sandwiched between the pair of electrodes 16 and 16 in the radial direction. In the present embodiment, the pair of electrodes 16 and 16 sandwich the core wire 13 from the vertical direction in FIG. After the core wire 13 is sandwiched between the electrodes 16, 16, the core wire 13 is energized for a predetermined time while being pressed by the electrode 16. At this time, energization is performed so that the temperature of the core wire is within a range of 300 to 500 degrees below the melting point of aluminum with a radiation thermometer, for example, and a pressure within a range of 100 to 200 KgF, for example. A plurality of strands constituting the core wire 13 are softened and deformed. At this time, the insulating oxide film formed on the surface of the strands is destroyed, and the strands of the strands are integrated by being exposed and fixed to each other. In this way, by heating below the melting point of aluminum, compared to heating above the melting point, it prevents damage to the insulation coating of the wire and prevents the core wire from melting and becoming thinner. can do. In the present embodiment, the core wire is easily cut when the compression rate is 30% or less, and the contact resistance is increased when the compression rate is 70% or more. Therefore, the compression rate is preferably in the range of 30 to 70%.
 その後、通電を停止し、一対の電極16,16を離間させて芯線13を電極16から外し、冷却(放冷)することにより、素線15同士が一体化された一体化領域が形成される。図4に示すように、芯線13は、一対の電極16,16が芯線13を挟み付ける方向(図4における上下方向)について扁平な形状に形成される。 Thereafter, the energization is stopped, the pair of electrodes 16 and 16 are separated from each other, the core wire 13 is detached from the electrode 16 and cooled (cooled), thereby forming an integrated region in which the strands 15 are integrated. . As shown in FIG. 4, the core wire 13 is formed in a flat shape in a direction (vertical direction in FIG. 4) in which the pair of electrodes 16, 16 sandwich the core wire 13.
 このように芯線13を構成する複数の素線15同士を一体化した後、図5に示すように、芯線13のうち素線15が一体化された一体化領域17を含む部分をワイヤーバレル19の上に図5の矢線で示す方向から載置し、且つ、絶縁被覆14をインシュレーションバレル18の上に載置した状態で、図示しない一対の金型で上下方向から挟むことにより、両バレルを電線11に対して外側から圧着する。このとき、一対の電極16,16により芯線13を挟む方向(図5における上下方向)と、金型でワイヤーバレル19を挟む方向と、が一致する姿勢(換言すれば、扁平な形状に形成された芯線13の、扁平な面が上下方向を向く姿勢)で、電線11を雌端子12に対して配置する。上記の工程を実行することにより端子付き電線10が完成する。 After integrating the plurality of strands 15 constituting the core wire 13 in this way, as shown in FIG. 5, a portion including the integrated region 17 in which the strands 15 of the core wire 13 are integrated is connected to the wire barrel 19. 5 and sandwiching the insulating coating 14 on the insulation barrel 18 with a pair of molds (not shown) from above and below. The barrel is crimped to the electric wire 11 from the outside. At this time, the direction (in the vertical direction in FIG. 5) between which the core wire 13 is sandwiched between the pair of electrodes 16 and 16 and the direction in which the wire barrel 19 is sandwiched between the molds (in other words, a flat shape is formed). The wire 11 is arranged with respect to the female terminal 12 in such a manner that the flat surface of the core wire 13 is oriented in the vertical direction. The terminal-attached electric wire 10 is completed by executing the above steps.
 本実施形態によれば、素線15同士は一体化領域17において互いに一体化され、電気的に極めて低い抵抗で接続されることになる。これにより、端子12を芯線13に圧着したときに、芯線13の径方向内側に位置する素線15が、電線11と雌端子12との間の電気的な接続に確実に寄与することができるので、電線11と雌端子12との間の電気抵抗を小さくすることができる。 According to this embodiment, the strands 15 are integrated with each other in the integrated region 17 and are electrically connected with extremely low resistance. Thereby, when the terminal 12 is crimped | bonded to the core wire 13, the strand 15 located in the radial inside of the core wire 13 can contribute reliably to the electrical connection between the electric wire 11 and the female terminal 12. Therefore, the electrical resistance between the electric wire 11 and the female terminal 12 can be reduced.
 また、本実施形態においては、一体化領域17は、芯線13のうち被圧着領域24よりも広い領域に形成されている。これにより、芯線13のうち被圧着領域24に位置する素線15には確実に一体化領域17が形成されているので、電線11と雌端子12との間の電気抵抗を一層小さくすることができる。 Further, in the present embodiment, the integrated region 17 is formed in a region wider than the bonded region 24 in the core wire 13. Thereby, since the integrated area | region 17 is reliably formed in the strand 15 located in the to-be-crimped area | region 24 among the core wires 13, the electrical resistance between the electric wire 11 and the female terminal 12 can be made still smaller. it can.
 本実施形態においては、芯線13はアルミニウム合金からなり、端子12が銅合金からなる。このように、芯線13がアルミニウム合金からなる場合、芯線13の表面には酸化膜等の絶縁性の被膜が比較的に形成されやすい。本実施形態は、芯線13の表面に絶縁性の被膜が形成されやすい場合に特に有効である。また、本実施形態のように、端子が芯線とは異なる銅合金からなる場合には、圧着部がヒートサイクルを受けることで両金属の熱膨張率の相違に起因する圧着部の固着強度の低下が懸念されるが、例え固着強度が低下した場合でも、素線相互間が極めて低い抵抗で接触して一体化された状態にあるから、その素線と端子との電気的な接続状態を低抵抗に維持することが可能である。 In the present embodiment, the core wire 13 is made of an aluminum alloy, and the terminal 12 is made of a copper alloy. Thus, when the core wire 13 is made of an aluminum alloy, an insulating film such as an oxide film is relatively easily formed on the surface of the core wire 13. This embodiment is particularly effective when an insulating coating is easily formed on the surface of the core wire 13. In addition, when the terminal is made of a copper alloy different from the core wire as in the present embodiment, the pressure-bonding portion is subjected to a heat cycle so that the bonding strength of the pressure-bonding portion is reduced due to the difference in thermal expansion coefficient between the two metals. However, even if the fixing strength is reduced, the wires are in contact and integrated with each other with extremely low resistance, so the electrical connection between the wires and the terminal is reduced. It is possible to maintain a resistance.
<他の実施形態>
 本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
 (1)本実施形態においては、一体化領域17は被圧着領域24よりも広い領域に形成される構成としたが、これに限られず、一体化領域17と被圧着領域24とが同じであってもよいし、また、被圧着領域24の一部に一体化領域17が形成される構成としてもよい。
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the present embodiment, the integrated region 17 is formed in a region wider than the bonded region 24. However, the present invention is not limited to this, and the integrated region 17 and the bonded region 24 are the same. Alternatively, the integrated region 17 may be formed in a part of the pressure-bonded region 24.
 (2)一対の電極16,16によって芯線13を挟む方向と、金型によってワイヤーバレル19を挟む方向とのなす角度は任意であって、例えば、図7に示すように、一対の電極16,16によって芯線13を挟む方向と、金型によってワイヤーバレル19を挟む方向とが交差する姿勢で、ワイヤーバレル19を芯線13に圧着してもよい。 (2) The angle between the direction in which the core wire 13 is sandwiched by the pair of electrodes 16 and 16 and the direction in which the wire barrel 19 is sandwiched by the mold is arbitrary. For example, as shown in FIG. The wire barrel 19 may be crimped to the core wire 13 so that the direction in which the core wire 13 is sandwiched by 16 and the direction in which the wire barrel 19 is sandwiched by the mold intersect.
 (3)ワイヤーバレル19は、互いに電線11の延びる方向にずれた配置で芯線13に圧着されてもよく、また、3本以上に分岐したワイヤーバレル片が左右両側から互い違いに形成されていてもよく、また、ワイヤーバレル片が1本のみ形成されて芯線13に圧着されていてもよく、ワイヤーバレル19の形状は必要に応じて任意の形状としうる。 (3) The wire barrels 19 may be crimped to the core wire 13 in an arrangement shifted from each other in the direction in which the electric wires 11 extend, and even if the wire barrel pieces branched into three or more are alternately formed from the left and right sides Alternatively, only one wire barrel piece may be formed and press-bonded to the core wire 13, and the shape of the wire barrel 19 may be any shape as necessary.
 (4)本実施形態においては、端子は筒状の接続部20を有する雌端子12としたが、これに限られず、雄タブを有する雄端子としてもよいし、また金属板材に貫通孔が形成されたいわゆるLA端子としてもよく、必要に応じて任意の形状の端子とすることができる。 (4) In the present embodiment, the terminal is the female terminal 12 having the cylindrical connection portion 20, but is not limited thereto, and may be a male terminal having a male tab, and a through hole is formed in the metal plate material. A so-called LA terminal may be used, and a terminal having an arbitrary shape can be used as necessary.
 (5)本実施形態においては、電線11は、芯線13の外周を絶縁被覆14で覆う被覆電線としたが、これに限られず、シールド電線11を用いてもよく、必要に応じて任意の電線11を用いることができる。 (5) In the present embodiment, the electric wire 11 is a covered electric wire that covers the outer periphery of the core wire 13 with the insulating coating 14. However, the electric wire 11 is not limited thereto, and the shielded electric wire 11 may be used. 11 can be used.
 (6)上記実施形態の端子は、ワイヤーバレル19と接続部20とが並んで配されていたものであったが、これに限られず、接続部20を有さない端子でもよい。例えば、図8に示すように、2本の電線11の芯線13を接続するに際して一本の電線11の端末部にて絶縁被覆14を剥ぎ取り芯線13を露出させ、もう一本の電線11については、中間部にて絶縁被覆14を剥ぎ取り芯線13を露出させ、これら露出させた2本の芯線13の一本ずつを一対のワイヤーバレル19のうちの片方ずつでかしめる、いわゆる中間スプライス構造の端子としてもよい。さらに、他の中間スプライス構造として、図示はしないが、共に2本の電線11の中間部にて芯線13を露出させ、露出させた中間部同士を一対のワイヤーバレル片のうちの片方ずつで圧着するものでもよい。 (6) Although the terminal of the said embodiment was what the wire barrel 19 and the connection part 20 were arranged side by side, it is not restricted to this, The terminal which does not have the connection part 20 may be sufficient. For example, as shown in FIG. 8, when connecting the core wires 13 of the two electric wires 11, the insulation coating 14 is peeled off at the terminal portion of one electric wire 11 to expose the core wire 13, and the other electric wire 11 is connected. Is a so-called intermediate splice structure in which the insulation coating 14 is peeled off at the intermediate portion, the core wire 13 is exposed, and each of the two exposed core wires 13 is caulked with one of a pair of wire barrels 19 It is good also as a terminal. Furthermore, as another intermediate splice structure, although not shown, the core wire 13 is exposed at the intermediate portion of the two electric wires 11 and the exposed intermediate portions are crimped by one of the pair of wire barrel pieces. You may do it.
 (7)上記実施形態では、芯線を一体化させた後に端子で圧着する構成としたが、芯線を端子で圧着した後に通電を行い、一体化領域を形成する構成としてもよい。この場合、芯線の融点以下で加熱することにより、融点以上で加熱する場合と比較して、上記効果に加え、端子の変形を防止することができる。 (7) In the above embodiment, the core wire is integrated and then crimped with a terminal. However, the core wire may be crimped with a terminal and then energized to form an integrated region. In this case, by heating below the melting point of the core wire, the terminal can be prevented from being deformed in addition to the above effects as compared with the case of heating above the melting point.
 (8)芯線および端子を構成する金属材料については、上記実施形態に限るものではない。 (8) The metal material constituting the core wire and the terminal is not limited to the above embodiment.
 10...端子付き電線
 11...電線
 12...雌端子(端子)
 14...絶縁被覆
 15...素線
 16...電極
 17...一体化領域
 19...ワイヤーバレル(圧着部)
 24...被圧着領域
10 ... Electric wire with terminal 11 ... Electric wire 12 ... Female terminal (terminal)
14 ... Insulation coating 15 ... Wire 16 ... Electrode 17 ... Integration area 19 ... Wire barrel (crimp)
24 ... Crimp area

Claims (4)

  1. 複数の素線からなる芯線を有する電線と、前記電線から露出する前記芯線に圧着される圧着部を有する端子と、を備えた端子付き電線の製造方法であって、
     前記芯線の外周面を覆う絶縁被覆を剥離して前記芯線を露出させる工程と、
     露出した前記芯線を一対の電極で径方向に挟んで前記芯線に通電することで前記芯線をその融点以下に加熱しつつ圧力を作用させて前記複数の素線を互いに一体化する工程と、
     前記芯線のうち、前記複数の素線が一体化された一体化領域を含む領域に前記圧着部を外側から巻き付けるようにして前記芯線に圧着する工程と、を実行する端子付き電線の製造方法。
    An electric wire having a core wire composed of a plurality of strands, and a terminal having a crimping portion that is crimped to the core wire exposed from the electric wire,
    Peeling the insulation coating covering the outer peripheral surface of the core wire to expose the core wire;
    A step of integrating the plurality of strands with each other by applying pressure while heating the core wire below its melting point by energizing the core wire by sandwiching the exposed core wire in a radial direction with a pair of electrodes;
    A method for producing a terminal-attached electric wire, comprising: a step of crimping the core wire around an area including an integrated region in which the plurality of strands are integrated, of the core wire, so as to be wound around the core wire.
  2. 複数の素線からなる芯線を含む電線と、前記電線から露出する前記芯線に圧着される端子と、を備えた端子付き電線であって、
     前記電線から露出する芯線には、その径方向に通電して前記芯線の融点以下に加熱しつつ圧力を作用させることで前記複数の素線が互いに一体化された一体化領域が形成されており、
     前記端子は前記芯線の外側に巻き付くように圧着される圧着部を有しており、前記圧着部は、前記芯線のうち前記一体化領域を含む領域に圧着されている端子付き電線。
    An electric wire including a core wire composed of a plurality of strands, and a terminal crimped to the core wire exposed from the electric wire,
    The core wire exposed from the electric wire is formed with an integrated region in which the plurality of strands are integrated with each other by applying a pressure while energizing in the radial direction and heating below the melting point of the core wire. ,
    The said terminal has a crimping | compression-bonding part crimped | bonded so that it may wind around the outer side of the said core wire, and the said crimping | compression-bonding part is an electric wire with a terminal crimped | bonded to the area | region including the said integrated area | region among the said core wires.
  3. 前記芯線のうち、前記一体化領域は、前記圧着部が圧着された被圧着領域と同一又は広く設定されていることを特徴とする請求項2に記載の端子付き電線。 3. The terminal-attached electric wire according to claim 2, wherein, in the core wire, the integrated region is set to be the same as or wider than a region to be crimped to which the crimping portion is crimped.
  4. 前記素線はアルミニウム又はアルミニウム合金からなり、前記端子は銅合金からなることを特徴とする請求項2または請求項3に記載の端子付き電線。 The electric wire with a terminal according to claim 2 or 3, wherein the element wire is made of aluminum or an aluminum alloy, and the terminal is made of a copper alloy.
PCT/JP2012/065193 2011-07-06 2012-06-14 Electrical cable having terminal and method for manufacturing electrical cable having terminal WO2013005548A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2011-150094 2011-07-06
JP2011150094A JP2013016430A (en) 2011-07-06 2011-07-06 Wire with terminal metal and manufacturing method therefor

Publications (1)

Publication Number Publication Date
WO2013005548A1 true WO2013005548A1 (en) 2013-01-10

Family

ID=47436905

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/065193 WO2013005548A1 (en) 2011-07-06 2012-06-14 Electrical cable having terminal and method for manufacturing electrical cable having terminal

Country Status (2)

Country Link
JP (1) JP2013016430A (en)
WO (1) WO2013005548A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104112914A (en) * 2013-04-17 2014-10-22 矢崎总业株式会社 Electric Wire Connection Structure And Electric Wire Connection Method
EP3125369B1 (en) * 2014-03-24 2021-04-21 Furukawa Electric Co., Ltd. Wire harness, connection method between covered conducting wire and terminal, and wire harness structure body

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014211953A (en) * 2013-04-17 2014-11-13 矢崎総業株式会社 Connection method, connection device of wire
JP5967039B2 (en) 2013-09-02 2016-08-10 株式会社オートネットワーク技術研究所 Conductive path and connector
JP6013417B2 (en) * 2014-09-03 2016-10-25 矢崎総業株式会社 Covered wire joining method
JP2019096569A (en) * 2017-11-28 2019-06-20 矢崎総業株式会社 Terminal-equipped electric wire, manufacturing method of terminal-equipped electric wire, and electric wire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007250393A (en) * 2006-03-16 2007-09-27 Mitsubishi Cable Ind Ltd Terminal crimping method of aluminum wire, and aluminum wire with terminal
JP2009231079A (en) * 2008-03-24 2009-10-08 Yazaki Corp Method of crimping terminal on electric wire
WO2010058786A1 (en) * 2008-11-19 2010-05-27 株式会社オートネットワーク技術研究所 Terminal fitting-equipped electric wire and method of manufacturing terminal fitting-equipped electric wire
JP2011081918A (en) * 2009-10-02 2011-04-21 Sumitomo Wiring Syst Ltd Water stop structure of electric wire, and method of forming the water stop structure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010056106A (en) * 2008-08-26 2010-03-11 Nec Electronics Corp Wire bonding device and wire bonding method using same
JP2011134515A (en) * 2009-12-23 2011-07-07 Autonetworks Technologies Ltd Electric wire with terminal fitting, and manufacturing method thereof
JP5654242B2 (en) * 2010-01-18 2015-01-14 矢崎総業株式会社 Electrical wire terminal treatment method
JP5482324B2 (en) * 2010-03-12 2014-05-07 住友電装株式会社 Manufacturing method of electric wire with terminal and electric wire with terminal
JP2011210593A (en) * 2010-03-30 2011-10-20 Autonetworks Technologies Ltd Electric wire with terminal metal fitting, and its manufacturing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007250393A (en) * 2006-03-16 2007-09-27 Mitsubishi Cable Ind Ltd Terminal crimping method of aluminum wire, and aluminum wire with terminal
JP2009231079A (en) * 2008-03-24 2009-10-08 Yazaki Corp Method of crimping terminal on electric wire
WO2010058786A1 (en) * 2008-11-19 2010-05-27 株式会社オートネットワーク技術研究所 Terminal fitting-equipped electric wire and method of manufacturing terminal fitting-equipped electric wire
JP2011082127A (en) * 2008-11-19 2011-04-21 Autonetworks Technologies Ltd Electric wire with terminal connector, and manufacturing method of electric wire with terminal connector
JP2011081918A (en) * 2009-10-02 2011-04-21 Sumitomo Wiring Syst Ltd Water stop structure of electric wire, and method of forming the water stop structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104112914A (en) * 2013-04-17 2014-10-22 矢崎总业株式会社 Electric Wire Connection Structure And Electric Wire Connection Method
EP3125369B1 (en) * 2014-03-24 2021-04-21 Furukawa Electric Co., Ltd. Wire harness, connection method between covered conducting wire and terminal, and wire harness structure body

Also Published As

Publication number Publication date
JP2013016430A (en) 2013-01-24

Similar Documents

Publication Publication Date Title
WO2013005548A1 (en) Electrical cable having terminal and method for manufacturing electrical cable having terminal
JP5741502B2 (en) Electric wire with terminal and manufacturing method thereof
JP5428789B2 (en) Electric wire with terminal fitting and method of manufacturing electric wire with terminal fitting
JP6163149B2 (en) Manufacturing method of electric wire with terminal
JP5369637B2 (en) Electric wire with terminal fitting and method for manufacturing the same
JP2010020980A (en) Electric wire with terminal metal fitting, and manufacturing method thereof
JP2009266469A (en) Crimping structure of terminal
CN104584341B (en) The terminal method of attachment of twisted wire and the twisted wire with terminal-connecting element
CN104247154A (en) Method for crimping terminal to wire and crimping terminal
WO2011118416A1 (en) Electric wire with terminal fitting and production method for same
JP2010055937A (en) Terminal metal fitting and electric wire with terminal metal fitting
JP2005116236A (en) Structure for crimping terminal to aluminum wire, and manufacturing method of aluminum wire with terminal
JP2010176886A (en) Wire connecting sleeve, repair wire, method of manufacturing the wire connection sleeve, and wire connecting method
JP5346607B2 (en) Terminal and connection method of terminal and electric wire
JP2018190533A (en) Connection structure of wire, and manufacturing method for harness
JP5415397B2 (en) Terminal and terminal manufacturing method
JP2011090804A (en) Electric wire with terminal fitting and method of manufacturing the same
WO2018092597A1 (en) Crimped terminal and electric wire with terminal
WO2015025695A1 (en) Conduction path and electric wire
JP5971513B2 (en) Electric wire with terminal and manufacturing method thereof
JP2011124178A (en) Electric wire with terminal fitting, and its manufacturing method
JP5011173B2 (en) Terminal crimping apparatus and wire harness manufacturing method
JP2013122870A (en) Terminal-equipped electric wire and manufacturing method thereof
DE102012209639A1 (en) Method for connecting electrical conductors and conductor composite
JP2014022143A (en) Conductor with terminal, and method of manufacturing the same

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12808175

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct app. not ent. europ. phase

Ref document number: 12808175

Country of ref document: EP

Kind code of ref document: A1