JP2015138634A - Electric wire with terminal fitting and manufacturing method thereof - Google Patents

Electric wire with terminal fitting and manufacturing method thereof Download PDF

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Publication number
JP2015138634A
JP2015138634A JP2014009162A JP2014009162A JP2015138634A JP 2015138634 A JP2015138634 A JP 2015138634A JP 2014009162 A JP2014009162 A JP 2014009162A JP 2014009162 A JP2014009162 A JP 2014009162A JP 2015138634 A JP2015138634 A JP 2015138634A
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Japan
Prior art keywords
terminal fitting
terminal
fixing portion
fixed
overlapping
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JP2014009162A
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Japanese (ja)
Inventor
昭宏 林
Akihiro Hayashi
昭宏 林
誠道 西島
Seido Nishijima
誠道 西島
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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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Priority to JP2014009162A priority Critical patent/JP2015138634A/en
Priority to PCT/JP2015/051030 priority patent/WO2015111509A1/en
Publication of JP2015138634A publication Critical patent/JP2015138634A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0214—Resistance welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/023—Soldered or welded connections between cables or wires and terminals
    • H01R4/024—Soldered or welded connections between cables or wires and terminals comprising preapplied solder
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/02—Cable terminations

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Cable Accessories (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Insulated Conductors (AREA)

Abstract

PROBLEM TO BE SOLVED: To satisfactorily fix between a terminal fitting and metal element wires by preventing generation of metal element wires not welded on the terminal fitting.SOLUTION: In an electric wire 1 with a terminal fitting obtained by fixing and connecting a terminal fitting 20 to a braided wire 10 composed of a plurality of metal element wires 12, an overlapping part 14 formed on an end part of the braided wire 10 is arranged so as to be overlapped to the terminal fitting 20, the overlapping part 14 includes a non-fixing part 14B not fixed on the terminal fitting 20 and a fixing part 14A fixed on the terminal fitting 20, and the fixing part 14A is formed as a shape swollen to the outside in the width direction as compared with the non-fixing part 14B. Since the fixing part 14A has the swollen shape, the metal element wires 12 in the fixing part 14A are fixed on the terminal fitting 20 over the whole region in the width direction of the overlapping part 14.

Description

本発明は、端子金具付き電線及びその製造方法に関する。   The present invention relates to an electric wire with a terminal fitting and a manufacturing method thereof.

従来、複数の金属素線からなる心線を被覆した導電部材に端子金具が接続された端子金具付き電線として、例えば特許文献１に記載の端子金具付き電線が知られている。この端子金具付き電線は、端子金具の上に蝋材を載置し、この蝋材の上に電線の心線を重ね合わせて加熱することにより、端子金具と心線とを蝋材により電気的に接続している。   Conventionally, for example, an electric wire with a terminal metal fitting described in Patent Document 1 is known as an electric wire with a terminal metal fitting in which a terminal metal fitting is connected to a conductive member that covers a core wire made of a plurality of metal strands. In this electric wire with terminal fittings, a brazing material is placed on the terminal fitting and the core wire of the electric wire is superposed on the brazing material and heated to electrically connect the terminal fitting and the core wire with the brazing material. Connected to.

特開２０１１−１２４１７８号公報JP 2011-124178 A

ところで、上記特許文献１の端子金具付き電線は、端子金具と心線とを蝋材によって固着させるため、蝋材を載置するための作業工程が増す等、端子金具付き電線の製造コストが上がってしまう。そこで、端子金具と錫めっきが施された心線とを平坦な下側電極の上面に重ね合わせて載置し、その幅方向の両側から支持部材等で支持した状態で、端子金具と金属素線とを平坦な上側電極で上側から加圧しながら通電して加熱することで、端子金具と金属素線とを溶接して固着する方法が検討されている。   By the way, since the electric wire with a terminal metal fitting of the said patent document 1 fixes a terminal metal fitting and a core wire with a wax material, the manufacturing cost of the electric wire with a terminal metal fitting increases, such as the work process for mounting a wax material increases. End up. Therefore, with the terminal fitting and the tin-plated core wire placed on the upper surface of the flat lower electrode, the terminal fitting and the metal element are supported with support members etc. from both sides in the width direction. A method of welding and fixing a terminal metal fitting and a metal element wire by applying current and heating while pressing a wire with a flat upper electrode from the upper side has been studied.

しかしながら、このような固着方法によると、端子金具と心線とをその幅方向の両側から支持部材等で支持した状態でその上下方向から両電極で挟みこんだ際に、心線の金属素線が押し潰されて浮き上がり、電極と支持部材との間の隙間に金属素線が入り込む虞がある。その結果、端子金具に溶接されない金属素線が生じ、金属素線と端子金具との間を十分に固着できない虞がある。   However, according to such a fixing method, when the terminal fitting and the core wire are sandwiched between both electrodes from above and below with the support member or the like supported from both sides in the width direction, the metal strand of the core wire May be crushed and lifted, and the metal strand may enter the gap between the electrode and the support member. As a result, a metal strand that is not welded to the terminal fitting is generated, and there is a possibility that the metal strand and the terminal fitting cannot be sufficiently fixed.

本発明は、上記の課題に鑑みて創作されたものであって、端子金具に溶接されない金属素線が生じることを防止することで、端子金具と金属素線との間を良好に固着させることを目的とする。   The present invention has been created in view of the above-described problem, and prevents the generation of a metal wire that is not welded to a terminal metal fitting, thereby favorably fixing between the terminal metal fitting and the metal element wire. With the goal.

本発明の端子金具付き電線は、複数の金属素線からなる導電部材に端子金具が固着されて接続された端子金具付き電線であって、前記端子金具と前記導電部材の端部に設けられた重ね部とが重ね合わされて配され、前記重ね部は、前記端子金具に固着されない非固着部と、前記端子金具に固着された固着部と、を有し、前記固着部は、その幅方向において、前記非固着部よりも外側に膨らんだ形で設けられていることを特徴とする。   The electric wire with a terminal metal fitting of the present invention is an electric wire with a terminal metal fitting that is connected to a conductive member made of a plurality of metal strands, and provided at the end of the terminal metal fitting and the conductive member. The overlapping portion is arranged to be overlapped, and the overlapping portion has a non-fixed portion that is not fixed to the terminal fitting and a fixing portion that is fixed to the terminal fitting, and the fixing portion is arranged in the width direction. The non-adhered portion is provided in a form bulging outward.

上記の端子金具付き電線は、固着部の幅方向の両側が非固着部よりも外側に膨らんだ形となっている。固着部のこのような形状は、その製造過程において固着部が端子金具に固着される際に、固着部の幅方向の両側が支持部材等で支持されない状態で、非固着部の幅以上の幅を有する電極等で固着部が加圧されて押し潰されることで形成される。このため、その製造過程において固着部が電極等で加圧される際に、電極等と支持部材等との間の隙間に金属素線が入り込むことを防止することができる。さらに、固着部がこのような形状とされていることで、固着部における金属素線が重ね部の幅方向の全域に亘って端子金具と固着されているので、端子金具に溶接されない金属素線が生じることを防止することができる。このように上記の端子金具付き電線では、端子金具に溶接されない金属素線が生じることを防止することで、端子金具と金属素線との間を良好に固着させることができる。   The electric wire with terminal fitting has a shape in which both sides in the width direction of the fixed portion swell outward from the non-fixed portion. Such a shape of the fixed portion is such that when the fixed portion is fixed to the terminal fitting in the manufacturing process, the width of the fixed portion is not supported by the support member or the like in the state where both sides in the width direction of the fixed portion are not supported. The fixing portion is pressed and crushed by an electrode or the like having a gap. For this reason, when the fixing portion is pressed with an electrode or the like in the manufacturing process, it is possible to prevent the metal strand from entering the gap between the electrode or the like and the support member or the like. Furthermore, since the fixing portion has such a shape, the metal strand in the fixing portion is fixed to the terminal fitting over the entire width direction of the overlapped portion, so that the metal strand that is not welded to the terminal fitting. Can be prevented. As described above, in the electric wire with terminal fitting, it is possible to satisfactorily fix the terminal fitting and the metal strand by preventing the metal strand not welded to the terminal fitting from being generated.

上記の端子金具付き電線において、前記端子金具は、前記非固着部と重なる部位の幅が前記固着部と重なる部位の幅よりも小さくてもよい。   In the electric wire with terminal fitting, the terminal fitting may have a width of a portion overlapping the non-fixed portion smaller than a width of a portion overlapping the fixed portion.

この構成によると、固着部における金属素線と端子金具とが固着される際に、非固着部の幅方向の両側が支持部材等で支持されることで、端子金具のうち非固着部と重なる部位よりも大きな幅とされる固着部と重なる部位が支持部材等と前後方向において干渉する。このため、固着部における金属素線と端子金具とが固着される際に、端子金具が前後方向において位置ずれすることを防止することができ、端子金具と金属素線との間を一層良好に固着させることができる。   According to this configuration, when the metal wire and the terminal fitting in the fixed portion are fixed, the both sides of the non-fixed portion in the width direction are supported by the support member or the like, so that the non-fixed portion of the terminal fitting overlaps. A portion overlapping with the fixing portion having a width larger than the portion interferes with the support member or the like in the front-rear direction. For this reason, when the metal element wire and the terminal fitting are fixed to each other at the fixing portion, the terminal fitting can be prevented from being displaced in the front-rear direction, and the gap between the terminal fitting and the metal element wire can be further improved. Can be fixed.

本発明の他の態様は、複数の金属素線からなる導電部材に端子金具が固着されて接続された端子金具付き電線を製造する方法であって、前記端子金具と前記導電部材の端部に設けられた重ね部とを重ね合わせる重ね合わせ工程と、前記重ね部のうち前記端子金具と固着されない非固着部の幅方向の両側を支持部材で支持する支持工程と、前記重ね部を前記支持部材で支持した状態で、前記重ね部のうち前記端子金具と固着される固着部と前記端子金具とを一対の電極の間に挟持して加圧する挟持工程と、前記固着部と前記端子金具とを加圧した状態で前記一対の電極の間に電流を流す通電工程と、を備え、前記支持工程では、前記固着部の幅方向の両側と前記支持部材との間に隙間が設けられた形で前記非固着部を前記支持部材で支持し、前記挟持工程では、前記非固着部の幅以上の幅を有する前記一対の電極の間に前記固着部と前記端子金具とを挟持することを特徴とする。   Another aspect of the present invention is a method of manufacturing an electric wire with a terminal fitting, wherein the terminal fitting is fixedly connected to a conductive member made of a plurality of metal wires, and the terminal fitting and the end of the conductive member An overlapping step of overlapping the provided overlapping portions; a supporting step of supporting both sides in the width direction of the non-adhering portions that are not fixed to the terminal fittings of the overlapping portions by a supporting member; and In the state supported by the clamping part, the clamping part fixed to the terminal metal fitting and the terminal metal fitting are clamped between a pair of electrodes, and the clamping part and the terminal metal fitting are pressed. An energization step of passing a current between the pair of electrodes in a pressurized state, and in the support step, a gap is provided between both sides of the fixing portion in the width direction and the support member. The non-fixed portion is supported by the support member, and the front The clamping step, characterized by clamping the said terminal metal fitting and the fixing portion between the pair of electrodes having a width larger than that of the non-stick portion.

上記の端子金具付き電線の製造方法によると、支持工程において固着部の幅方向の両側と支持部材との間に隙間が設けられた形で非固着部を支持部材で支持するため、挟持工程において非固着部の幅以上の幅を有する一対の電極の間に固着部と端子金具とを挟持することができる。このため、挟持工程において電極と支持部材との間の隙間に金属素線が入り込むことを防止することができる。その結果、端子金具に溶接されない金属素線が生じることを防止することができ、端子金具と金属素線との間を良好に固着させることができる。   According to the above method for manufacturing the electric wire with terminal fitting, in the supporting step, the non-fixed portion is supported by the support member in a form in which a gap is provided between both sides of the fixed portion in the width direction and the support member. The fixed portion and the terminal fitting can be sandwiched between a pair of electrodes having a width equal to or larger than the width of the non-fixed portion. For this reason, it can prevent that a metal strand penetrates into the clearance gap between an electrode and a supporting member in a clamping process. As a result, it is possible to prevent occurrence of a metal strand that is not welded to the terminal fitting, and it is possible to favorably fix the terminal fitting and the metal strand.

上記の端子金具付き電線の製造方法において、前記挟持工程では、前記非固着部の幅よりも大きな幅を有する前記一対の電極の間に前記固着部と前記端子金具とを挟持してもよい。   In the above method for manufacturing an electric wire with terminal fitting, in the clamping step, the fixing portion and the terminal fitting may be clamped between the pair of electrodes having a width larger than the width of the non-fixing portion.

この製造方法によると、挟持工程において電極が幅方向に多少ずれた場合であっても、電極が重ね部の幅方向の全域に亘って重畳した状態を保つことができるため、挟持工程において電極と支持部材との間の隙間に金属素線が入り込むことを効果的に防止することができる。その結果、端子金具と金属素線との間を一層良好に固着させることができる。   According to this manufacturing method, even if the electrode is slightly displaced in the width direction in the sandwiching step, the electrode can be maintained in a state of being overlapped over the entire width direction of the overlapping portion. It is possible to effectively prevent the metal strand from entering the gap between the support member. As a result, the terminal metal fitting and the metal element wire can be fixed more satisfactorily.

本発明によれば、端子金具に溶接されない金属素線が生じることを防止することで、端子金具と金属素線との間を良好に固着させることができる。   ADVANTAGE OF THE INVENTION According to this invention, between a terminal metal fitting and a metal strand can be favorably fixed by preventing that the metal strand which is not welded to a terminal metal fitting arises.

実施形態１における端子金具付き電線の斜視図The perspective view of the electric wire with a terminal metal fitting in Embodiment 1. 端子金具と編組線とを重ね合わせた状態を示す断面図Sectional drawing which shows the state which overlapped the terminal metal fitting and the braided wire 端子金具と編組線とを一対の電極の間に挟持した状態を上方から視た平面図A plan view of the state in which the terminal fitting and the braided wire are sandwiched between a pair of electrodes as viewed from above 図３におけるIV−IV断面の断面構成であって、端子金具と編組線とを一対の電極の間に挟持した状態を示す断面図FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3, showing a state in which a terminal fitting and a braided wire are sandwiched between a pair of electrodes 図４における一点鎖線で囲まれた部分を拡大した図であって、上側電極とガイド部材との間の隙間を拡大した拡大断面図FIG. 5 is an enlarged view of a portion surrounded by a one-dot chain line in FIG. 4, and an enlarged cross-sectional view in which a gap between an upper electrode and a guide member is enlarged. 端子金具と編組線とを一対の電極の間に挟持した状態を示す斜視図The perspective view which shows the state which clamped the terminal metal fitting and the braided wire between a pair of electrodes 実施形態２において端子金具と編組線とを一対の電極の間に挟持した状態を上方から視た平面図The top view which looked at the state which clamped the terminal metal fitting and the braided wire between a pair of electrodes in Embodiment 2 from the upper direction

＜実施形態１＞
図１乃至図６を参照して実施形態１を説明する。本実施形態では、図１に示す端子金具付き電線１を例示する。この端子金具付き電線１は、図１に示すように、編組線（導電部材の一例）１０の端部に端子金具２０が溶接されることにより編組線１０と端子金具２０とが電気的に接続されたものである。なお、以下の説明では、図２、図４、及び図５における紙面上側を上方とし、図１における左前側及び図３、図７における紙面下方を前方とする。また、図２乃至図５、及び図７における左右方向を編組線１０、端子金具２０及び後述する一対の電極４１，４２の幅方向とする。 <Embodiment 1>
The first embodiment will be described with reference to FIGS. 1 to 6. In this embodiment, the electric wire 1 with a terminal metal fitting shown in FIG. 1 is illustrated. As shown in FIG. 1, the electric wire 1 with terminal fitting is electrically connected to the braided wire 10 and the terminal fitting 20 by welding the terminal fitting 20 to the end of the braided wire (an example of a conductive member) 10. It has been done. In the following description, the upper side in FIG. 2, FIG. 4, and FIG. 5 is the upper side, and the left front side in FIG. 1 and the lower side in FIG. 2 to 5 and 7 are the width directions of the braided wire 10, the terminal fitting 20, and a pair of electrodes 41 and 42 to be described later.

端子金具２０は、銅または銅合金からなる平板状とされている。端子金具２０の後方側には、図１に示すように、相手側端子（不図示）と接続される円形の貫通孔２２が形成されている。また、端子金具２０の前方側は、編組線１０の端部が重ね合わされて編組線１０と接続される接続部２４とされる。   The terminal fitting 20 is a flat plate made of copper or a copper alloy. As shown in FIG. 1, a circular through hole 22 connected to a mating terminal (not shown) is formed on the rear side of the terminal fitting 20. In addition, the front side of the terminal fitting 20 is a connection portion 24 that is connected to the braided wire 10 by overlapping the end portions of the braided wire 10.

端子金具２０の接続部２４の一部には、その幅方向の両側にそれぞれ切り欠き２６が設けられている。接続部２４のうち幅方向の両側に上記切り欠き２６が設けられていない部位は、後述する編組線１０の固着部１４Ａと重なる部位とされる（以下、当該部位を端子側固着部２４Ａと称する）。一方、接続部２４のうち幅方向の両側に上記切り欠き２６が設けられた部位は、後述する編組線１０の非固着部１４Ｂと重なる部位とされる（以下、当該部位を端子側非固着部２４Ｂと称する）。また、端子金具２０の接続部２４では、上記切り欠き２６が設けられることで、端子側非固着部２４Ｂの幅が端子側固着部２４Ａの幅よりも小さくなっている。   Cutouts 26 are provided on both sides of the connecting portion 24 of the terminal fitting 20 in the width direction. A portion of the connecting portion 24 where the notches 26 are not provided on both sides in the width direction is a portion that overlaps a fixing portion 14A of the braided wire 10 described later (hereinafter, this portion is referred to as a terminal-side fixing portion 24A). ). On the other hand, a portion of the connecting portion 24 in which the notches 26 are provided on both sides in the width direction is a portion that overlaps a non-fixed portion 14B of the braided wire 10 to be described later (hereinafter, this portion is referred to as a terminal-side non-fixed portion). 24B). Moreover, in the connection part 24 of the terminal metal fitting 20, since the said notch 26 is provided, the width | variety of the terminal side non-adhesion part 24B is smaller than the width | variety of the terminal side fixation part 24A.

編組線１０は、筒状をなし、図１に示すように、銅または銅合金からなる複数の細い金属素線１２を網目状に編み込んだ電線とされている。金属素線１２の表面には錫めっきが施されることにより錫めっき層（不図示）が形成されており、金属素線１２の酸化や錆の発生が抑制されている。編組線１０の端部には端子金具２０と重ね合わされる重ね部１４が設けられている。   The braided wire 10 has a cylindrical shape, and as shown in FIG. 1, is a wire in which a plurality of thin metal wires 12 made of copper or a copper alloy are knitted in a mesh shape. A tin plating layer (not shown) is formed on the surface of the metal wire 12 by being tin-plated, and the occurrence of oxidation and rust of the metal wire 12 is suppressed. At the end of the braided wire 10, an overlapping portion 14 that overlaps the terminal fitting 20 is provided.

編組線１０の重ね部１４は、その前方側が抵抗溶接によって端子金具２０と固着される固着部１４Ａとされ、後方側が端子金具２０と固着されない非固着部１４Ｂとされる。編組線１０の重ね部１４は、図２に示すように、抵抗溶接前の状態では中空形状となっている。そして、編組線１０の重ね部１４は、端子金具２０上に重ね合わせられて固着部１４Ａが抵抗溶接されることにより、図１及び図３に示すように、端子金具２０の接続部２４及び金属素線１２の錫めっき層から溶融した錫めっきによって固められて幅広な中実形状となり、その固着部１４Ａが端子金具２０の端子側固着部２４Ａと固着される。   The overlapped portion 14 of the braided wire 10 is a fixed portion 14A that is fixed to the terminal fitting 20 by resistance welding on the front side, and a non-fixed portion 14B that is not fixed to the terminal fitting 20 on the rear side. As shown in FIG. 2, the overlapping portion 14 of the braided wire 10 has a hollow shape before resistance welding. Then, the overlapping portion 14 of the braided wire 10 is overlapped on the terminal fitting 20 and the fixing portion 14A is resistance welded, so that as shown in FIGS. The wire 12 is solidified by a molten tin plating from the tin plating layer of the element wire 12 to form a wide solid shape, and the fixing portion 14A is fixed to the terminal side fixing portion 24A of the terminal fitting 20.

また、編組線１０の重ね部１４における固着部１４Ａは、図１に示すように、その幅方向において、重ね部１４における非固着部１４Ｂよりも外側に円弧状に膨らんだ形で設けられている（以下、当該固着部１４Ａのうち外側に膨らんだ部分を膨出部１６と称する）。そして、固着部１４Ａにおける金属素線１２は、重ね部１４の幅方向の全域に亘って端子金具２０の端子側固着部２４Ａと固着されている。   Further, as shown in FIG. 1, the fixing portion 14 </ b> A in the overlapping portion 14 of the braided wire 10 is provided in a shape swelled in an arc shape outside the non-fixing portion 14 </ b> B in the overlapping portion 14 in the width direction. (Hereinafter, a portion of the fixing portion 14A that swells outward is referred to as a bulging portion 16). The metal wire 12 in the fixing portion 14A is fixed to the terminal-side fixing portion 24A of the terminal fitting 20 over the entire width direction of the overlapping portion 14.

続いて、本実施形態における端子金具付き電線１の製造方法を説明する。本方法では、端子金具２０と編組線１０とを溶接装置４０を用いて抵抗溶接によって接続する。この溶接装置４０は、図２に示すように、上下に配されるタングステン製の一対の電極４１，４２を備えている。一対の電極４１，４２は、下側に配された下側電極４１の上面４１Ａと上側に配された上側電極４２の下面４２Ａとがそれぞれ平坦に形成されており、上側電極４２の下面４２Ａと下側電極４１の上面４１Ａとが平行に対向する配置とされている。   Then, the manufacturing method of the electric wire 1 with a terminal metal fitting in this embodiment is demonstrated. In this method, the terminal fitting 20 and the braided wire 10 are connected by resistance welding using the welding apparatus 40. As shown in FIG. 2, the welding apparatus 40 includes a pair of tungsten electrodes 41 and 42 that are arranged vertically. In the pair of electrodes 41, 42, the upper surface 41A of the lower electrode 41 disposed on the lower side and the lower surface 42A of the upper electrode 42 disposed on the upper side are respectively formed flat, and the lower surface 42A of the upper electrode 42 The upper surface 41 </ b> A of the lower electrode 41 is arranged to face in parallel.

本方法では、まず、下側電極４１の上方に端子側固着部２４Ａが位置するように、端子金具２０の接続部２４を溶接装置４０上に載置する。端子金具２０の接続部２４を溶接装置４０上に載置することで、図２に示すように、端子側固着部２４Ａが下側電極４１の上面４１Ａに載置される。ここで、接続部２４は平板状となっているので、下側電極４１に対して端子側固着部２４Ａが面接触した状態となる。次に、端子金具２０の接続部２４上に編組線１０の重ね部１４を重ね合わせる（重ね合わせ工程の一例）。   In this method, first, the connection portion 24 of the terminal fitting 20 is placed on the welding device 40 so that the terminal-side fixing portion 24A is positioned above the lower electrode 41. By placing the connecting portion 24 of the terminal fitting 20 on the welding device 40, the terminal-side fixing portion 24 </ b> A is placed on the upper surface 41 </ b> A of the lower electrode 41 as shown in FIG. 2. Here, since the connecting portion 24 has a flat plate shape, the terminal side fixing portion 24 </ b> A is in surface contact with the lower electrode 41. Next, the overlapping portion 14 of the braided wire 10 is overlapped on the connection portion 24 of the terminal fitting 20 (an example of an overlapping step).

次に、端子金具２０の接続部２４及び編組線１０の重ね部１４の幅方向の両側を一対のガイド部材（支持部材の一例）４４，４４で挟み込む。このガイド部材４４は、セラミック製とされ、接続部２４及び重ね部１４を挟み込んだ状態で対称配置される。また、このガイド部材４４は、図２及び図３に示すように、その先端部に、上下方向に沿って溝状に延びる凹部４４Ａが形成されている。凹部４４Ａの上端は上側に開口しており、下端は下側に開口している。   Next, both sides in the width direction of the connection portion 24 of the terminal fitting 20 and the overlapping portion 14 of the braided wire 10 are sandwiched between a pair of guide members (an example of a support member) 44 and 44. The guide member 44 is made of ceramic, and is symmetrically arranged with the connection portion 24 and the overlapping portion 14 sandwiched therebetween. As shown in FIGS. 2 and 3, the guide member 44 has a recess 44 </ b> A extending in a groove shape along the vertical direction at the tip. The upper end of the recess 44A opens upward, and the lower end opens downward.

ガイド部材４４の先端部のうち、凹部４４Ａを挟んだ前方側の部位及び後方側の部位における内側端面（編組線１０と対向する側の端面）は、それぞれ編組線１０の重ね部１４及び端子金具２０の接続部２４を支持する支持端面４４Ｂとされる。本方法では、接続部２４及び重ね部１４をガイド部材４４によって挟み込む際に、接続部２４における端子側固着部２４Ａの幅方向の両側、及び重ね部１４における固着部１４Ａの幅方向の両側が、それぞれガイド部材４４の凹部４４Ａと対向するように挟み込む。   Among the front end portions of the guide member 44, the inner end surfaces (end surfaces facing the braided wire 10) of the front side portion and the rear side portion sandwiching the recess 44A are the overlapping portion 14 of the braided wire 10 and the terminal fitting, respectively. The support end surface 44B supports the 20 connecting portions 24. In this method, when the connecting portion 24 and the overlapping portion 14 are sandwiched between the guide members 44, both sides in the width direction of the terminal side fixing portion 24A in the connecting portion 24 and both sides in the width direction of the fixing portion 14A in the overlapping portion 14 are Each of the guide members 44 is sandwiched so as to face the recess 44A.

このように接続部２４及び重ね部１４をガイド部材４４で挟み込むことで、図３に示すように、編組線１０のうち、固着部１４Ａを挟んだ前方側の部位と後方側の部位における幅方向の両側が、それぞれガイド部材４４の支持端面４４Ｂによって支持される（支持工程の一例）。この状態では、重ね部１４における非固着部１４Ｂの幅方向の両側、及び接続部２４における端子側非固着部２４Ｂの幅方向の両側が、それぞれガイド部材４４の支持端面４４Ｂに当接されるとともに、固着部１４Ａの幅方向の両側とガイド部材４４の凹部４４Ａとの間に隙間Ｓ１が設けられる。   By sandwiching the connecting portion 24 and the overlapping portion 14 with the guide member 44 in this way, as shown in FIG. 3, in the braided wire 10, the width direction in the front side portion and the rear side portion sandwiching the fixing portion 14A Are supported by the support end surface 44B of the guide member 44 (an example of a support process). In this state, both sides of the overlapping portion 14 in the width direction of the non-fixed portion 14B and both sides of the connection portion 24 in the width direction of the terminal-side non-fixed portion 24B are in contact with the support end surface 44B of the guide member 44, respectively. A gap S1 is provided between both sides in the width direction of the fixing portion 14A and the recess 44A of the guide member 44.

なお、ガイド部材４４の凹部４４Ａの深さ寸法は端子金具２０の切り欠き２６の深さ寸法とほぼ等しくなっており、ガイド部材４４の凹部４４Ａの前後方向の幅は端子金具２０の切り欠き２６の前後方向の幅よりわずかに大きいものとなっている。このため、端子側非固着部２４Ｂの幅方向の両側が支持端面４４Ｂに当接されることで、端子側固着部２４Ａの幅方向の両側が凹部４４Ａの底面と当接する。   The depth dimension of the recess 44A of the guide member 44 is substantially equal to the depth dimension of the notch 26 of the terminal fitting 20, and the width in the front-rear direction of the recess 44A of the guide member 44 is the notch 26 of the terminal fitting 20. It is slightly larger than the width in the front-rear direction. For this reason, both sides in the width direction of the terminal-side non-fixed portion 24B are in contact with the support end surface 44B, so that both sides in the width direction of the terminal-side fixed portion 24A are in contact with the bottom surface of the recess 44A.

また、ガイド部材４４の凹部４４Ａの前後方向における寸法は端子金具２０の端子側固着部２４Ａの前後方向における寸法よりわずかに大きくなっている。このため、図３に示すように、接続部２４及び重ね部１４を一対のガイド部材４４，４４で挟み込んだ状態では、端子金具２０の各切り欠き２６に各ガイド部材４４の支持端面４４Ｂが入り込む（各ガイド部材４４の凹部４４Ａに端子金具２０における端子側固着部２４Ａの両側が入り込む）。これにより、一対のガイド部材４４，４４によって端子金具２０が前後方向に移動することが規制される。   Further, the dimension in the front-rear direction of the recess 44 </ b> A of the guide member 44 is slightly larger than the dimension in the front-rear direction of the terminal-side fixing part 24 </ b> A of the terminal fitting 20. For this reason, as shown in FIG. 3, in a state where the connecting portion 24 and the overlapping portion 14 are sandwiched between the pair of guide members 44, 44, the support end surface 44 </ b> B of each guide member 44 enters each notch 26 of the terminal fitting 20. (Both sides of the terminal side fixing portion 24A of the terminal fitting 20 enter the recess 44A of each guide member 44). As a result, the terminal fitting 20 is restricted from moving in the front-rear direction by the pair of guide members 44, 44.

次に、図３乃至図６に示すように、編組線１０と端子金具２０とを一対のガイド部材４４，４４によって支持した状態で、編組線１０の重ね部１４における固着部１４Ａの上側から上側電極４２を押し当てる（図３では上側電極４２を一点鎖線で示す）。これにより、重ね部１４における固着部１４Ａと端子金具２０における端子側固着部２４Ａとが一対の電極４１，４２の間に挟持されて加圧される（挟持工程の一例）。   Next, as shown in FIGS. 3 to 6, the braided wire 10 and the terminal fitting 20 are supported by the pair of guide members 44, 44, and the upper side from the upper side of the fixing portion 14 </ b> A in the overlapping portion 14 of the braided wire 10. The electrode 42 is pressed (in FIG. 3, the upper electrode 42 is shown with a dashed-dotted line). As a result, the fixing portion 14A in the overlapping portion 14 and the terminal-side fixing portion 24A in the terminal fitting 20 are sandwiched and pressed between the pair of electrodes 41 and 42 (an example of a clamping step).

なお、下側電極４１の幅は、編組線１０と端子金具２０とを支持した状態における一対のガイド部材４４，４４の凹部４４Ａと凹部４４Ａの間の幅Ｗ１（図３参照）と一致している。一方、上側電極４２の幅は、編組線１０と端子金具２０とを支持した状態における一対のガイド部材４４，４４の凹部４４Ａと凹部４４Ａの間の幅よりもわずかに小さく、かつ、固着部１４Ａ（非固着部１４Ｂ）の幅Ｗ２（図３参照）よりも大きいものとなっている。このため、固着部１４Ａに上側電極４２を押し当てる際、上側電極４２の幅方向の両側が各ガイド部材４４と干渉することはない。一方、これにより、上側電極４２と各ガイド部材４４との間にはわずかな隙間が形成される。   The width of the lower electrode 41 matches the width W1 (see FIG. 3) between the recess 44A and the recess 44A of the pair of guide members 44, 44 in a state where the braided wire 10 and the terminal fitting 20 are supported. Yes. On the other hand, the width of the upper electrode 42 is slightly smaller than the width between the recess 44A and the recess 44A of the pair of guide members 44, 44 in a state where the braided wire 10 and the terminal fitting 20 are supported, and the fixing portion 14A. It is larger than the width W2 (see FIG. 3) of the (non-fixed portion 14B). For this reason, when the upper electrode 42 is pressed against the fixing portion 14 </ b> A, both sides in the width direction of the upper electrode 42 do not interfere with each guide member 44. On the other hand, a slight gap is formed between the upper electrode 42 and each guide member 44.

また、固着部１４Ａと端子側固着部２４Ａとが加圧される際、固着部１４Ａの幅方向の両側がガイド部材４４によって支持されないため（固着部１４Ａの幅方向の両側と各ガイド部材４４との間に隙間Ｓ１（図３参照）が設けられるため）、固着部１４Ａが一対の電極４１，４２の間で加圧されて押し潰されることで、固着部１４Ａの幅方向の両側が非固着部１４Ｂよりも外側に膨らんだ形とされる。その結果、図４に示すように、固着部１４Ａの幅方向の両側に上記膨出部１６が形成される。   Further, when the fixing portion 14A and the terminal side fixing portion 24A are pressurized, both sides in the width direction of the fixing portion 14A are not supported by the guide members 44 (both sides in the width direction of the fixing portion 14A and each guide member 44). Since the gap S1 (see FIG. 3) is provided between them, the fixing portion 14A is pressed and crushed between the pair of electrodes 41 and 42, so that both sides in the width direction of the fixing portion 14A are not fixed. The shape swells outward from the portion 14B. As a result, as shown in FIG. 4, the bulging portions 16 are formed on both sides of the fixing portion 14A in the width direction.

ここで、仮に各ガイド部材に上記凹部が設けられていないとすると、固着部の幅方向の両側がガイド部材によって支持されることとなる。そこで、上側電極の幅方向の両側が各ガイド部材と干渉しないように、上側電極の幅を、各ガイド部材の間の幅、即ち固着部（非固着部）の幅より小さくする必要がある。この場合、固着部の幅方向の両側における一部に上側電極に加圧されない部位が生じるため、固着部が一対の電極の間に挟持されて固着部における金属素線が押し潰されることで、固着部の幅方向の両側における一部の金属素線が上側電極と各ガイド部材との間の隙間に入り込むことがある。   Here, if each guide member is not provided with the recess, both sides in the width direction of the fixing portion are supported by the guide member. Therefore, it is necessary to make the width of the upper electrode smaller than the width between the guide members, that is, the width of the fixed portion (non-fixed portion) so that both sides in the width direction of the upper electrode do not interfere with each guide member. In this case, since a portion that is not pressed by the upper electrode occurs in a part of both sides in the width direction of the fixing portion, the fixing portion is sandwiched between the pair of electrodes, and the metal element wire in the fixing portion is crushed, Some metal strands on both sides in the width direction of the fixing portion may enter a gap between the upper electrode and each guide member.

これに対し本実施形態では、図５に示すように、上側電極４２の幅を固着部１４Ａの幅Ｗ２よりも大きくできるので、固着部１４Ａが一対の電極４１，４２の間に挟持されることで、固着部１４Ａの全域が上側電極４２によって加圧される。このため、固着部１４Ａにおける金属素線１２が押し潰される際に、固着部１４Ａの一部の金属素線１２が浮き上がることが防止され、上側電極４２と各ガイド部材４４との間の隙間Ｓ２（図５参照）に金属素線１２が入り込むことを防止することができる。   On the other hand, in the present embodiment, as shown in FIG. 5, the width of the upper electrode 42 can be made larger than the width W2 of the fixing portion 14A, so that the fixing portion 14A is sandwiched between the pair of electrodes 41 and 42. Thus, the entire fixed portion 14A is pressurized by the upper electrode 42. For this reason, when the metal strand 12 in the fixing portion 14A is crushed, a part of the metal strand 12 of the fixing portion 14A is prevented from being lifted, and the gap S2 between the upper electrode 42 and each guide member 44 is prevented. It is possible to prevent the metal strand 12 from entering (see FIG. 5).

次に、固着部１４Ａと端子側固着部２４Ａとを加圧した状態で一対の電極４１，４２の間に電流を流し、固着部１４Ａと端子側固着部２４Ａとを、錫の溶解温度より高く、銅の溶解温度より低い温度範囲内で加熱する（通電工程の一例）。この工程では、加熱温度が錫の融点を過ぎると、固着部１４Ａの金属素線１２及び端子側固着部２４Ａの表面に形成された錫めっき層から錫が溶け出す。そして、溶け出した錫が、金属素線１２の隙間に確実に入り込むとともに、固着部１４Ａと端子側固着部２４Ａとの間に確実に入り込んだ状態となる。これにより、固着部１４Ａと端子側固着部２４Ａとの間がしっかりと密着される。   Next, a current is passed between the pair of electrodes 41 and 42 in a state where the fixing portion 14A and the terminal side fixing portion 24A are pressurized, and the fixing portion 14A and the terminal side fixing portion 24A are made higher than the melting temperature of tin. And heating within a temperature range lower than the melting temperature of copper (an example of an energization process). In this step, when the heating temperature exceeds the melting point of tin, tin is melted from the tin plating layer formed on the surface of the metal strand 12 of the fixing portion 14A and the terminal side fixing portion 24A. Then, the melted tin surely enters the gap between the metal wires 12 and enters the state between the fixing portion 14A and the terminal-side fixing portion 24A. Thereby, between the adhering portion 14A and the terminal-side adhering portion 24A is firmly adhered.

次に、固着部１４Ａに対して端子側固着部２４Ａの全域が密着したところで、固着部１４Ａ及び端子側固着部２４Ａを冷却する。これにより、錫が硬化して固着部１４Ａと端子側固着部２４Ａとが固着されて電気的に接続され、端子金具付き電線１が完成する。   Next, when the entire region of the terminal side fixing portion 24A comes into close contact with the fixing portion 14A, the fixing portion 14A and the terminal side fixing portion 24A are cooled. Thereby, tin hardens | cures and the adhering part 14A and the terminal side adhering part 24A are adhering and electrically connected, and the electric wire 1 with a terminal metal fitting is completed.

以上説明したように、本実施形態の端子金具付き電線１によると、その製造過程において、非固着部１４Ｂの幅方向の両側がガイド部材４４によって支持され、固着部１４Ａの幅方向の両側が支持されない状態で固着部１４Ａと端子金具２０とが加圧される。このとき、非固着部１４Ｂの幅以上の幅よりも大きな幅を有する一対の電極４１，４２の間に固着部１４Ａと端子側固着部２４Ａとを挟持させる。このため、固着部１４Ａが一対の電極４１，４２の間に挟持されて加圧される際に、固着部１４Ａの全域が上側電極４２によって加圧される。   As described above, according to the electric wire 1 with terminal fitting of the present embodiment, in the manufacturing process, both sides in the width direction of the non-fixed portion 14B are supported by the guide member 44, and both sides in the width direction of the fixed portion 14A are supported. In a state where the fixing is not performed, the fixing portion 14A and the terminal fitting 20 are pressurized. At this time, the fixing portion 14A and the terminal-side fixing portion 24A are sandwiched between the pair of electrodes 41 and 42 having a width larger than the width of the non-fixing portion 14B. For this reason, when the fixing portion 14 </ b> A is sandwiched between the pair of electrodes 41 and 42 and pressed, the entire area of the fixing portion 14 </ b> A is pressed by the upper electrode 42.

そして、固着部１４Ａの幅方向の両側が支持されない状態で固着部１４Ａが一対の電極４１，４２の間で加圧されて押し潰されることで、固着部１４Ａの幅方向の両側が非固着部１４Ｂよりも外側に膨らんだ形とされ、固着部１４Ａの幅方向の両側に膨出部１６が形成される。その結果、固着部１４Ａにおける金属素線１２を重ね部１４の幅方向の全域に亘って端子金具２０と固着させることができ、端子金具２０に溶接されない金属素線１２が生じることを防止することができる。このように本実施形態の端子金具付き電線１では、端子金具２０に溶接されない金属素線１２が生じることを防止することで、端子金具２０と金属素線１２との間を良好に固着させることができる。   Then, the fixing portion 14A is pressed and crushed between the pair of electrodes 41 and 42 in a state where both sides in the width direction of the fixing portion 14A are not supported, so that both sides in the width direction of the fixing portion 14A are non-fixing portions. The bulging portion 16 is formed on both sides in the width direction of the fixing portion 14A. As a result, the metal strand 12 in the fixing portion 14A can be fixed to the terminal fitting 20 over the entire width direction of the overlapping portion 14, and the metal strand 12 that is not welded to the terminal fitting 20 is prevented from being generated. Can do. Thus, in the electric wire 1 with a terminal metal fitting of this embodiment, the metal wire 12 which is not welded to the terminal metal fitting 20 is prevented from being generated, so that the terminal metal fitting 20 and the metal element wire 12 are firmly fixed. Can do.

また、本実施形態の端子金具付き電線１では、端子金具２０に切り欠き２６が設けられ、これにより、端子側非固着部２４Ｂの幅が端子側固着部２４Ａの幅よりも小さくなっている。このような構成とされていることで、固着部１４Ａにおける金属素線１２と端子側固着部２４Ａとが固着される際に、非固着部１４Ｂの幅方向の両側がガイド部材４４で支持され、端子側非固着部２４Ｂよりも大きな幅とされる端子側固着部２４Ａがガイド部材４４と前後方向において近接する。このため、固着部１４Ａにおける金属素線１２と端子側固着部２４Ａとが固着される際に、端子金具２０が前後方向に位置ずれすると、端子側固着部２４Ａがガイド部材４４と前後方向において即座に干渉し、端子金具２０が前後方向に位置ずれすることを防止することができる。これにより、端子金具２０と金属素線１２との間を一層良好に固着させることができる。   Moreover, in the electric wire 1 with a terminal metal fitting of this embodiment, the notch 26 is provided in the terminal metal fitting 20, and, thereby, the width | variety of the terminal side non-adhesion part 24B is smaller than the width | variety of the terminal side adhering part 24A. With such a configuration, when the metal strand 12 and the terminal side fixing portion 24A in the fixing portion 14A are fixed, both sides in the width direction of the non-fixing portion 14B are supported by the guide member 44, A terminal-side fixed portion 24A having a width larger than the terminal-side non-fixed portion 24B is close to the guide member 44 in the front-rear direction. For this reason, when the metal wire 12 and the terminal-side fixing portion 24A are fixed to each other in the fixing portion 14A, if the terminal fitting 20 is displaced in the front-rear direction, the terminal-side fixing portion 24A is immediately brought into contact with the guide member 44 in the front-rear direction. It is possible to prevent the terminal fitting 20 from being displaced in the front-rear direction. Thereby, between the terminal metal fitting 20 and the metal strand 12 can be more favorably fixed.

また、本実施形態の端子金具付き電線１では、上述したように、その製造過程において、上側電極４２と各ガイド部材４４との間の隙間Ｓ２に金属素線１２が入り込むことを防止することができる。その結果、端子金具２０に溶接されない金属素線１２が生じることを防止することができ、端子金具２０と金属素線１２との間を良好に固着させることができる。   Moreover, in the electric wire 1 with a terminal metal fitting of this embodiment, as mentioned above, it can prevent that the metal strand 12 enters into the clearance gap S2 between the upper electrode 42 and each guide member 44 in the manufacturing process. it can. As a result, it can prevent that the metal strand 12 which is not welded to the terminal metal fitting 20 arises, and can firmly fix between the terminal metal fitting 20 and the metal strand 12.

また、本実施形態の端子金具付き電線１では、上述したように、その製造過程において、非固着部１４Ｂの幅よりも大きな幅を有する一対の電極４１，４２の間に固着部１４Ａと端子金具２０とを挟持させる。このため、上側電極４２が幅方向に多少ずれた場合であっても、上側電極４２が重ね部１４の幅方向の全域に亘って重畳した状態を保つことができ、上側電極４２とガイド部材４４との間の隙間Ｓ２に金属素線１２が入り込むことを効果的に防止することができる。その結果、端子金具２０と金属素線１２との間を一層良好に固着させることができる。   Moreover, in the electric wire 1 with a terminal metal fitting of this embodiment, as mentioned above, in the manufacturing process, between the pair of electrodes 41 and 42 which have a width | variety larger than the width | variety of the non-sticking part 14B, 14A of fixed parts and a terminal metal fitting. 20 is sandwiched. For this reason, even when the upper electrode 42 is slightly shifted in the width direction, the upper electrode 42 can be maintained in a state of being overlapped over the entire width direction of the overlapping portion 14, and the upper electrode 42 and the guide member 44 can be maintained. It is possible to effectively prevent the metal strand 12 from entering the gap S2 between the two. As a result, the terminal fitting 20 and the metal element wire 12 can be more firmly fixed.

＜実施形態２＞
次に、実施形態２について図７を参照して説明する。本実施形態の端子金具付き電線１０１は、その製造過程で用いるガイド部材１４４の凹部１４４Ａの深さ寸法が実施形態１のものと異なっている。その他の構成については実施形態１のものと同様であるため、構造、作用、及び効果の説明は省略する。なお、図７において、図３の参照符号に数字１００を加えた部位は、実施形態１で説明した部位と同一である。 <Embodiment 2>
Next, Embodiment 2 will be described with reference to FIG. The electric wire 101 with terminal fitting of the present embodiment is different from that of the first embodiment in the depth dimension of the recess 144A of the guide member 144 used in the manufacturing process. Since the other configuration is the same as that of the first embodiment, the description of the structure, operation, and effect is omitted. In FIG. 7, the part obtained by adding the numeral 100 to the reference numeral in FIG. 3 is the same as the part described in the first embodiment.

本実施形態では、図７に示すように、その製造過程で用いるガイド部材１４４の凹部１４４Ａの深さが実施形態１のものと比べて浅く形成されている。そして、その製造過程において、固着部と端子側固着部とを下側電極と上側電極１４２との間に挟持させる工程では、非固着部１１４Ｂの幅と等しい幅を有する上側電極１４２を固着部の上側から押し当てる。   In the present embodiment, as shown in FIG. 7, the depth of the recess 144A of the guide member 144 used in the manufacturing process is shallower than that of the first embodiment. In the manufacturing process, in the step of sandwiching the fixing portion and the terminal-side fixing portion between the lower electrode and the upper electrode 142, the upper electrode 142 having a width equal to the width of the non-fixing portion 114B is attached to the fixing portion. Press from above.

このような製造方法であっても、固着部が下側電極と上側電極１４２との間に挟持される際に、固着部の全域が上側電極１４２によって加圧される。このため、固着部における金属素線が押し潰される際に、上側電極１４２と各ガイド部材１４４との間の隙間に金属素線が入り込むことを防止することができる。その結果、端子金具１２０と金属素線との間を良好に固着させることができる。   Even in such a manufacturing method, when the fixed portion is sandwiched between the lower electrode and the upper electrode 142, the entire area of the fixed portion is pressurized by the upper electrode 142. For this reason, when the metal strand in the fixing portion is crushed, it is possible to prevent the metal strand from entering the gap between the upper electrode 142 and each guide member 144. As a result, the terminal fitting 120 and the metal element wire can be satisfactorily fixed.

なお本実施形態では、ガイド部材１４４に凹部１４４Ａが設けられていることで、固着部の幅方向の両側がガイド部材１４４によって支持されないため、固着部が下側電極と上側電極１４２との間で加圧されて押し潰されることで、実施形態１と同様に、固着部の幅方向の両側に膨出部１１６が形成される。   In the present embodiment, since the guide member 144 is provided with the concave portion 144A, both sides in the width direction of the fixing portion are not supported by the guide member 144, so that the fixing portion is between the lower electrode and the upper electrode 142. By being pressed and crushed, the bulging portions 116 are formed on both sides of the fixing portion in the width direction as in the first embodiment.

上記の実施形態の他の変形例を以下に列挙する。
（１）上記の各実施形態では、導電部材の一例として編組線を示したが、編組線以外の導電部材が端子金具に接続された端子金具付き電線であってもよい。 Other modifications of the above embodiment are listed below.
(1) In each of the above embodiments, a braided wire is shown as an example of a conductive member. However, an electric wire with a terminal fitting in which a conductive member other than the braided wire is connected to the terminal fitting may be used.

（２）上記の各実施形態では、端子金具の一例として相手側端子と接続される貫通孔が形成された端子金具を示したが、端子金具の構成については限定されない。 (2) In each of the above embodiments, the terminal fitting in which the through hole connected to the counterpart terminal is formed as an example of the terminal fitting, but the configuration of the terminal fitting is not limited.

（３）上記の各実施形態では、端子金具に切り欠きが設けられた構成を例示したが、端子金具に切り欠きが設けられていない構成であってもよい。 (3) In each of the above embodiments, the configuration in which the cutout is provided in the terminal fitting is illustrated, but the configuration in which the cutout is not provided in the terminal fitting may be employed.

（４）上記の各実施形態では、錫めっき層から溶け出した錫によって編組線と端子金具との間が固着された構成を例示したが、編組線と端子金具との間を固着させる構成については限定されない。 (4) In each of the above embodiments, the configuration in which the braided wire and the terminal fitting are fixed by the tin melted from the tin plating layer is illustrated, but the configuration in which the braided wire and the terminal fitting are fixed. Is not limited.

（５）上記の各実施形態では、その製造過程において、端子金具の上に編組線を重ね合わせた後にそれらの両側を一対のガイド部材で挟み込む例を示したが、端子金具のみを一対のガイド部材で挟み込み、その後に端子金具の上に編組線を重ね合わせることで、編組線の非固着部の両側を一対のガイド部材によって支持してもよい。即ち、支持工程を重ね合わせ工程の前後に分けて行ってもよい。 (5) In each of the above embodiments, in the manufacturing process, an example in which the braided wires are superimposed on the terminal fitting and then both sides thereof are sandwiched between the pair of guide members has been described. The both sides of the non-fixed portion of the braided wire may be supported by a pair of guide members by sandwiching between the members and then superimposing the braided wire on the terminal fitting. That is, the support process may be performed before and after the superposition process.

以上、本発明の各実施形態について詳細に説明したが、これらは例示に過ぎず、特許請求の範囲を限定するものではない。特許請求の範囲に記載の技術には、以上に例示した具体例を様々に変形、変更したものが含まれる。   As mentioned above, although each embodiment of this invention was described in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

１…端子金具付き電線
１０，１１０…編組線
１２…金属素線
１４…重ね部
１４Ａ…固着部
１４Ｂ…非固着部
１６，１１６…膨出部
２０，１２０…端子金具
２２，１２２…貫通孔
２４…接続部
２４Ａ…端子側固着部
２４Ｂ…端子側非固着部
２６…切り欠き
４０…溶接装置
４１…下側電極
４１Ａ…（下側電極の）上面
４２，１４２…上側電極
４２Ａ…（上側電極の）下面
４４，１４４…ガイド部材
４４Ａ，１４４Ａ…凹部
４４Ｂ…支持端面
Ｓ１…固着部の幅方向の両側と各ガイド部材との間に設けられた隙間
Ｓ２…上側電極と各ガイド部材との間に設けられた隙間 DESCRIPTION OF SYMBOLS 1 ... Electric wire with a terminal metal fitting 110, 110 ... Braided wire 12 ... Metal wire 14 ... Overlapping part 14A ... Adhering part 14B ... Non-adhering part 16, 116 ... Protruding part 20, 120 ... Terminal metal fitting 22, 122 ... Through-hole 24 ... Connection part 24A ... Terminal side fixing part 24B ... Terminal side non-adhering part 26 ... Notch 40 ... Welding device 41 ... Lower electrode 41A ... (Lower electrode) upper surface 42,142 ... Upper electrode 42A ... (Upper electrode 42A) ) Lower surface 44, 144... Guide member 44A, 144A... Recess 44B... Support end surface S1... Gap provided between the both sides in the width direction of the fixing portion and each guide member S2 ... Between the upper electrode and each guide member Clearance provided

Claims (4)

複数の金属素線からなる導電部材に端子金具が固着されて接続された端子金具付き電線であって、
前記端子金具と前記導電部材の端部に設けられた重ね部とが重ね合わされて配され、
前記重ね部は、前記端子金具に固着されない非固着部と、前記端子金具に固着された固着部と、を有し、
前記固着部は、その幅方向において、前記非固着部よりも外側に膨らんだ形で設けられていることを特徴とする端子金具付き電線。 A terminal fitting is an electric wire with a terminal fitting fixedly connected to a conductive member made of a plurality of metal strands,
The terminal fitting and the overlapping portion provided at the end of the conductive member are arranged to overlap each other,
The overlapping portion has a non-fixed portion that is not fixed to the terminal fitting, and a fixed portion that is fixed to the terminal fitting,
The electric wire with a terminal fitting, wherein the fixing portion is provided in a shape swelled outward from the non-fixing portion in the width direction. 前記端子金具は、前記非固着部と重なる部位の幅が前記固着部と重なる部位の幅よりも小さいことを特徴とする請求項１に記載の端子金具付き電線。   2. The electric wire with terminal fitting according to claim 1, wherein the terminal fitting has a width of a portion overlapping the non-fixed portion smaller than a width of a portion overlapping the fixed portion. 複数の金属素線からなる導電部材に端子金具が固着されて接続された端子金具付き電線を製造する方法であって、
前記端子金具と前記導電部材の端部に設けられた重ね部とを重ね合わせる重ね合わせ工程と、
前記重ね部のうち前記端子金具と固着されない非固着部の幅方向の両側を支持部材で支持する支持工程と、
前記重ね部を前記支持部材で支持した状態で、前記重ね部のうち前記端子金具と固着される固着部と前記端子金具とを一対の電極の間に挟持して加圧する挟持工程と、
前記固着部と前記端子金具とを加圧した状態で前記一対の電極の間に電流を流す通電工程と、を備え、
前記支持工程では、前記固着部の幅方向の両側と前記支持部材との間に隙間が設けられた形で前記非固着部を前記支持部材で支持し、
前記挟持工程では、前記非固着部の幅以上の幅を有する前記一対の電極の間に前記固着部と前記端子金具とを挟持することを特徴とする端子金具付き電線の製造方法。 A method of manufacturing an electric wire with a terminal fitting in which a terminal fitting is fixedly connected to a conductive member made of a plurality of metal wires,
An overlapping step of overlapping the terminal fitting and the overlapping portion provided at the end of the conductive member;
A supporting step of supporting the both sides in the width direction of the non-fixed portion that is not fixed to the terminal fitting in the overlapping portion with a support member;
A sandwiching step of sandwiching and pressing between the pair of electrodes the fixing portion fixed to the terminal fitting and the terminal fitting in the overlapping portion in a state where the overlapping portion is supported by the support member;
An energization step of passing a current between the pair of electrodes in a state where the fixing portion and the terminal fitting are pressurized, and
In the supporting step, the non-fixed portion is supported by the support member in a form in which a gap is provided between both sides in the width direction of the fixed portion and the support member,
In the clamping step, the securing portion and the terminal fitting are sandwiched between the pair of electrodes having a width equal to or larger than the width of the non-fixing portion. 前記挟持工程では、前記非固着部の幅よりも大きな幅を有する前記一対の電極の間に前記固着部と前記端子金具とを挟持することを特徴とする請求項３に記載の端子金具付き電線の製造方法。   The electric wire with terminal fitting according to claim 3, wherein in the clamping step, the fixing portion and the terminal fitting are sandwiched between the pair of electrodes having a width larger than the width of the non-fixing portion. Manufacturing method.
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