JPH08118051A - Laser welding method for electrical wire - Google Patents
Laser welding method for electrical wireInfo
- Publication number
- JPH08118051A JPH08118051A JP6264060A JP26406094A JPH08118051A JP H08118051 A JPH08118051 A JP H08118051A JP 6264060 A JP6264060 A JP 6264060A JP 26406094 A JP26406094 A JP 26406094A JP H08118051 A JPH08118051 A JP H08118051A
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- electric wire
- laser welding
- welding method
- exposed portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
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- Laser Beam Processing (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電線同士または電線と
他の部材とをレーザ溶接によって接合する電線のレーザ
溶接方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser welding method for electric wires in which electric wires or electric wires and other members are joined by laser welding.
【０００２】[0002]
【従来の技術】従来、電線同士を接続する方法として、
特開昭５６−１２６７号公報に記載の方法が知られてい
る。この方法は、図７に示すように、２本の細線（電
線）１、２を接続するに際し、一方の細線１の先端部１
ａをＬ字状に折り曲げ加工し、この折り曲げ部３に他方
の細線２の先端部２ａを重ね合わせ、その２本の細線
１、２の重ね合わせ部における先端部１ａ、２ａの外側
に電極４の狙い位置５、５を設定して、プラズマスポッ
ト溶接するというものである。2. Description of the Related Art Conventionally, as a method of connecting electric wires,
The method described in JP-A-56-1267 is known. In this method, as shown in FIG. 7, when connecting two thin wires (electric wires) 1 and 2, the tip portion 1 of one thin wire 1 is connected.
a is bent into an L shape, the tip portion 2a of the other thin wire 2 is superposed on the bent portion 3, and the electrode 4 is provided outside the tip portions 1a and 2a in the superposed portion of the two thin wires 1 and 2. The target positions 5 and 5 are set and plasma spot welding is performed.
【０００３】また、実開平６−３１０７２号公報には、
図８に示すように、電線７の端末部に熱圧着端子８を加
圧電極９を用いて圧着し、この熱圧着端子８により相手
側の部材と接続する方法が記載されている。Further, Japanese Utility Model Laid-Open No. 6-31072 discloses that
As shown in FIG. 8, a method is described in which a thermocompression-bonding terminal 8 is pressure-bonded to the end portion of the electric wire 7 by using a pressure electrode 9, and the thermocompression-bonding terminal 8 is used to connect to a mating member.
【０００４】[0004]
【発明が解決しようとする課題】図７にて説明した従来
の電線の接続方法は、電線の端末同士を接続する場合の
方法であり、溶接電極４の狙い位置を、各細線１、２の
先端部１ａ、２ａの外側の位置５、５に設定することに
より、溶接時に発生するくびれ（「細り」あるいは「や
せ」ともいう）の問題（溶接時に溶融した導体の表面張
力の影響や、溶融導体の飛散あるいは蒸発などにより、
溶接部の両側の金属が引き寄せられて、くびれができる
という問題）を解消しようとしているが、電極の狙い位
置５、５の設定が微妙で、ちょっとでも内側位置（例え
ば図中１０で示す位置）に動くと、くびれができるとい
う問題があった。The conventional method for connecting electric wires described in FIG. 7 is a method for connecting the ends of the electric wires, and the target position of the welding electrode 4 is set to that of each thin wire 1, 2. By setting the positions 5 and 5 outside the tips 1a and 2a, the problem of constriction (also called "thinning" or "thinness") that occurs during welding (the influence of the surface tension of the conductor melted during welding and melting) Due to scattering or evaporation of conductors,
I am trying to solve the problem that the metal on both sides of the welded part is drawn and constriction occurs, but the setting of the target positions 5, 5 of the electrode is delicate, and even a little inside position (for example, the position shown by 10 in the figure) There was a problem that when you move to, you may have a neck.
【０００５】また、図８にて説明した熱圧着端子を用い
て接続する方法は、専用の端子を必要とするので、重量
の増加や接続部の大型化やコストアップを招くという問
題があった。Further, the method of connecting by using the thermocompression bonding terminal described in FIG. 8 requires a dedicated terminal, so that there is a problem that the weight is increased, the connecting portion is enlarged, and the cost is increased. .
【０００６】本発明は、上記事情を考慮し、専用の端子
金具を用いずに電線と電線あるいは電線と端子金具等を
接続することができ、しかも接続箇所にくびれが発生し
ないようにすることのできる電線のレーザ溶接方法を提
供することを目的とする。In consideration of the above circumstances, the present invention is capable of connecting electric wires to each other or an electric wire to a terminal fitting without using a dedicated terminal fitting, and prevents a constriction from being generated at the connection point. An object of the present invention is to provide a laser welding method for an electric wire that can be performed.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明は、電線
２０に、絶縁被覆２１を剥がした導体露出部２２を形成
し、該導体露出部２２を他の部材３０、４５と重ね合わ
せて、該重ね合わせ部４０、４９をレーザ溶接するに際
し、レーザ溶接時に、前記電線２０の導体露出部２２の
長手方向両側のうち少なくとも一方側２０ｂを溶接部５
８側に押し移動することを特徴とする。According to a first aspect of the present invention, an electric conductor 20 is formed with a conductor exposed portion 22 from which an insulating coating 21 is peeled off, and the conductor exposed portion 22 is superposed on other members 30 and 45. At the time of laser welding the overlapping portions 40, 49, at least one side 20b of the conductor exposed portion 22 of the electric wire 20 in the longitudinal direction is welded at the time of laser welding.
It is characterized by pushing and moving to the 8 side.
【０００８】請求項２の発明は、電線２０に、絶縁被覆
２１を剥がした導体露出部２２を形成し、該導体露出部
２２を他の部材３９、４５に重ね合わせて、該重ね合わ
せ部４０、４９をレーザ溶接するに際し、レーザ溶接時
に、溶接部５８に対して補助導体７１を供給することを
特徴とする。According to the second aspect of the invention, the conductor 20 is formed with the conductor exposed portion 22 from which the insulating coating 21 is peeled off, the conductor exposed portion 22 is superposed on the other members 39 and 45, and the superposed portion 40 is formed. , 49, the auxiliary conductor 71 is supplied to the welded portion 58 at the time of laser welding.
【０００９】請求項３の発明は、請求項２記載の電線の
レーザ溶接方法であって、前記補助導体７１を棒状に構
成して、その先端部７１ａを斜めに曲げ、前記溶接部５
８に対してこの棒状の補助導体７１を送り出して、前記
斜めに曲げた先端部７１ａを前記導体露出部２２に略平
行に沿わせて、その状態でレーザ溶接することを特徴と
する。According to a third aspect of the present invention, there is provided a laser welding method for an electric wire according to the second aspect, wherein the auxiliary conductor 71 is formed in a rod shape, and a tip portion 71a of the auxiliary conductor 71 is bent at an angle.
8, the rod-shaped auxiliary conductor 71 is sent out, the obliquely bent tip portion 71a is made to extend substantially parallel to the conductor exposed portion 22, and laser welding is performed in this state.
【００１０】請求項４の発明は、請求項３記載の電線の
レーザ溶接方法であって、前記棒状の補助導体７１の外
周に長手方向に間隔をおいて、１溶接毎に溶融した先端
部７１ａを切り離すための切欠部７１ｂを設けたことを
特徴とする。A fourth aspect of the present invention is the laser welding method for an electric wire according to the third aspect, wherein the rod-shaped auxiliary conductor 71 is circumferentially spaced apart in the longitudinal direction and is melted for each welding at the tip portion 71a. It is characterized in that a cutout portion 71b for cutting off is provided.
【００１１】請求項５の発明は、請求項３又は４記載の
電線のレーザ溶接方法であって、前記棒状の補助導体７
１を該補助導体７１の先端部７１ａが溶融している時に
移動することを特徴とする。A fifth aspect of the present invention is the laser welding method for an electric wire according to the third or fourth aspect, wherein the rod-shaped auxiliary conductor 7 is used.
1 is moved when the tip portion 71a of the auxiliary conductor 71 is melted.
【００１２】請求項６の発明は、請求項２〜５のいずれ
かに記載の電線のレーザ溶接方法であって、前記補助導
体７１を、前記電線２０の導体露出部２２と他の部材３
０、４５との間に挟むことを特徴とする。A sixth aspect of the present invention is the laser welding method for an electric wire according to any one of the second to fifth aspects, wherein the auxiliary conductor 71 is connected to the conductor exposed portion 22 of the electric wire 20 and another member 3.
It is characterized in that it is sandwiched between 0 and 45.
【００１３】請求項７の発明は、請求項１〜６のいずれ
かに記載の電線のレーザ溶接方法であって、前記他方の
部材も電線３０であり、両方の電線２０、３０の長手方
向中間部に前記導体露出部２２を形成し、それら両電線
２０、３０の導体露出部２２、３２を交差状態で重ね合
わせて、該重ね合わせ部４０をレーザ溶接することを特
徴とする。The invention of claim 7 is the laser welding method for an electric wire according to any one of claims 1 to 6, wherein the other member is also an electric wire 30, and both electric wires 20, 30 are longitudinally intermediate. It is characterized in that the conductor exposed portion 22 is formed in the portion, the conductor exposed portions 22 and 32 of the electric wires 20 and 30 are overlapped with each other in an intersecting state, and the overlapped portion 40 is laser-welded.
【００１４】請求項８の発明は、請求項７記載の電線の
レーザ溶接方法であって、前記他方の部材としての電線
３０の導体露出部３２の長手方向両側のうち少なくとも
一方側を溶接部５８側に押し移動することを特徴とす
る。The invention of claim 8 is the method for laser welding an electric wire according to claim 7, wherein at least one side of the conductor exposed portion 32 of the electric wire 30 serving as the other member in the longitudinal direction is welded 58. It is characterized by pushing and moving to the side.
【００１５】請求項９の発明は、請求項１〜６のいずれ
かに記載の電線のレーザ溶接方法であって、前記他方の
部材が端子金具４５であり、該端子金具４５に前記電線
２０の導体露出部２２を重ね合わせて、該重ね合わせ部
４９をレーザ溶接することを特徴とする。The invention of claim 9 is the method for laser welding an electric wire according to any one of claims 1 to 6, wherein the other member is a terminal fitting 45, and the terminal fitting 45 is provided with the electric wire 20. It is characterized in that the conductor exposed portion 22 is superposed and the superposed portion 49 is laser-welded.
【００１６】請求項１０の発明は、請求項１〜９のいず
れかに記載の電線のレーザ溶接方法であって、前記電線
２０の中の導体が複数の細線の集束体である場合、前記
導体露出部２２をプレスにより潰してからレーザ溶接す
ることを特徴とする。The invention of claim 10 is the laser welding method for an electric wire according to any one of claims 1 to 9, wherein when the conductor in the electric wire 20 is a bundle of a plurality of thin wires, It is characterized in that the exposed portion 22 is crushed by a press and then laser-welded.
【００１７】請求項１１の発明は、請求項２記載の電線
のレーザ溶接方法であって、前記電線２０の中の導体が
複数の細線の集束体である場合、前記補助導体７１を独
立した導体片により構成して、前記導体露出部２２を、
前記補助導体７１としての導体片と共にプレスにより潰
して、該導体片を導体露出部に付着させてからレーザ溶
接することを特徴とする。The invention of claim 11 is the laser welding method for an electric wire according to claim 2, wherein when the conductor in the electric wire 20 is a bundle of a plurality of thin wires, the auxiliary conductor 71 is an independent conductor. And a conductor exposed portion 22
It is characterized in that it is crushed by pressing together with the conductor piece as the auxiliary conductor 71, the conductor piece is attached to the conductor exposed portion, and then laser welding is performed.
【００１８】請求項１２の発明は、請求項１又は８記載
の電線のレーザ溶接方法であって、前記電線２０の押し
移動を、受台６１上またはロール上に載置した電線２０
を、受台６１またはロールと対向して前記電線２０を挟
む駆動ロール６３をモータ６２で回転させることにより
行うことを特徴とする。A twelfth aspect of the present invention is the laser welding method of the electric wire according to the first or eighth aspect, wherein the electric wire 20 is pushed and moved by placing the electric wire 20 on a pedestal 61 or on a roll.
Is performed by rotating the drive roll 63, which faces the cradle 61 or the roll and sandwiches the electric wire 20, by the motor 62.
【００１９】[0019]
【作用】請求項１の発明では、電線の導体露出部を他の
部材とレーザ溶接した際に、溶融導体が飛散や蒸発した
り、表面張力等で溶接部中央に引き寄せられたりするこ
とにより、導体の溶接部の両側にくびれが生じるが、導
体の溶融時に溶接部側に電線が押し移動されることによ
り、そのくびれ分が補充されるので、結果的にくびれが
発生しなくなり、接続強度が高まる。According to the invention of claim 1, when the conductor exposed portion of the electric wire is laser-welded with another member, the molten conductor is scattered or evaporated, or is attracted to the center of the welded portion due to surface tension or the like. There is a constriction on both sides of the welded part of the conductor, but when the conductor is melted, the electric wire is pushed and moved to the welded part so that the constricted part is replenished, resulting in no constriction and connection strength. Increase.
【００２０】請求項２の発明では、電線の導体露出部を
他の部材とレーザ溶接した際に、溶接部の両側にくびれ
が生じるが、溶接時に補助導体を溶接部に対して供給す
ることにより、溶融金属が充分な量確保されるので、く
びれが発生しなくなり、接続強度が高まる。According to the second aspect of the invention, when the conductor exposed portion of the electric wire is laser-welded to another member, a constriction occurs on both sides of the welded portion. However, by supplying the auxiliary conductor to the welded portion during welding. Since a sufficient amount of molten metal is secured, constriction does not occur and the connection strength increases.
【００２１】請求項３の発明では、棒状の補助導体の先
端部を送り出して溶接部に供給するので、１度の溶接時
に供給する補助導体の量を適当に調節することができる
上、次々に行う溶接の都度補助導体を間欠送りすること
もできる。また、供給する補助導体の先端を斜めに曲
げ、その斜めに曲げた先端部を導体露出部に略平行に沿
わせるようにしているので、例えば電線に対して斜め上
方から補助導体を送り出すように構成した場合にも、溶
接部の適切な位置に適切な姿勢で補助導体を供給するこ
とができる。According to the third aspect of the present invention, since the tip end portion of the rod-shaped auxiliary conductor is sent out and supplied to the welded portion, the amount of the auxiliary conductor supplied during one welding can be appropriately adjusted and one after another. The auxiliary conductor can be intermittently fed each time welding is performed. Further, since the tip of the auxiliary conductor to be supplied is obliquely bent, and the obliquely bent tip is made to extend substantially parallel to the conductor exposed portion, for example, it is possible to send the auxiliary conductor obliquely above the electric wire. Even when configured, the auxiliary conductor can be supplied to an appropriate position of the welded portion in an appropriate posture.
【００２２】請求項４の発明では、１回の溶接毎に切欠
部の位置で補助導体が溶融して切り離される。According to the invention of claim 4, the auxiliary conductor is melted and separated at the position of the notch every welding.
【００２３】請求項５の発明では、補助導体の先端部を
切り離しにくいとき、棒状の補助導体を移動させること
により、溶融した先端部が自然に切り離される。According to the fifth aspect of the invention, when it is difficult to separate the tip of the auxiliary conductor, the molten tip is naturally separated by moving the rod-shaped auxiliary conductor.
【００２４】請求項６の発明では、補助導体を電線の導
体露出部と他の部材との間に挟むので、溶接時に補助導
体が位置ずれしたりせず、安定した溶接が可能になる。According to the invention of claim 6, since the auxiliary conductor is sandwiched between the conductor exposed portion of the electric wire and another member, the auxiliary conductor is not displaced during welding, and stable welding can be performed.
【００２５】請求項７の発明では、接続すべき両方の電
線の長手方向中間部に設けた導体露出部を相互にレーザ
溶接する場合に、通常であれば溶接部の両側にくびれが
発生するが、溶接時に電線を押し移動したり、補助導体
を供給したりするので、くびれが発生を抑えることがで
きる。According to the seventh aspect of the invention, when the conductor exposed portions provided in the longitudinal intermediate portions of both electric wires to be connected are laser-welded to each other, normally, a constriction occurs on both sides of the welded portion. Since the electric wire is pushed and moved or the auxiliary conductor is supplied during welding, the constriction can be suppressed.
【００２６】請求項８の発明では、他方の部材としての
電線の方も溶接時に押し移動するので、より一層くびれ
の発生が押さえられる。In the invention of claim 8, the electric wire as the other member also pushes and moves at the time of welding, so that the occurrence of constriction is further suppressed.
【００２７】請求項９の発明では、電線の端部に設けた
導体露出部、あるいは端部に近い位置を中間皮剥きして
形成した導体露出部を、端子金具に重ね合わせてレーザ
溶接する場合にも、くびれの発生を押さえながら溶接す
ることができる。According to the invention of claim 9, when the conductor exposed portion provided at the end of the electric wire or the conductor exposed portion formed by removing the intermediate skin at a position close to the end is overlapped with the terminal fitting and laser-welded. Also, welding can be performed while suppressing the occurrence of necking.
【００２８】請求項１０の発明では、導体が単線でなく
複数の細線の集束体である場合、空気層を含むことによ
り、溶接時の導体の飛散が一層顕著になって、大きなく
びれの発生が心配されるが、溶接しようとする導体露出
部を予めプレスにより潰してからレーザ溶接するので、
溶融導体の飛散を最小限に押さえることができる。よっ
て、その状態で溶接部に一方の電線を押し移動したり、
補助導体を溶接部に供給したりするので、くびれの発生
がなくなる。According to the tenth aspect of the invention, when the conductor is not a single wire but a bundle of a plurality of thin wires, the inclusion of the air layer makes the scattering of the conductor more remarkable during welding, resulting in the occurrence of a large constriction. Although it is worried, since the exposed conductor part to be welded is crushed by a press in advance and laser welding is performed,
It is possible to minimize the scattering of the molten conductor. Therefore, push one wire to the welded part in that state,
Since the auxiliary conductor is supplied to the welded portion, the constriction does not occur.
【００２９】請求項１１の発明では、補助導体を導体片
の形で供給するので、常に適量の補助導体を溶接部に供
給することができる。また、導体片をプレス時に一緒に
導体露出部に付着させておくので、後から補助導体を供
給する必要がなく、溶接と共に自動的に導体片がくびれ
分を補充する。According to the eleventh aspect of the invention, since the auxiliary conductor is supplied in the form of a conductor piece, it is possible to always supply an appropriate amount of auxiliary conductor to the welded portion. Further, since the conductor piece is attached to the conductor exposed portion together with the pressing, it is not necessary to supply the auxiliary conductor afterwards, and the conductor piece automatically replenishes the constricted portion at the time of welding.
【００３０】請求項１２の発明では、モータを回転させ
ると、駆動ロールの回転により電線が長手方向に送り出
され、溶接部に向けて押し移動される。According to the twelfth aspect of the present invention, when the motor is rotated, the electric wire is sent out in the longitudinal direction by the rotation of the drive roll and is pushed and moved toward the welded portion.
【００３１】[0031]
【実施例】以下、本発明の各実施例を図面に基づいて説
明する。Embodiments of the present invention will be described below with reference to the drawings.
【００３２】〔第１実施例〕図１、図２を用いて第１実
施例を説明する。本実施例では、２本の電線２０、３０
の長手方向中間部に、絶縁被覆２１、３１を剥いだ導体
露出部２２、３２を形成し、その導体露出部２２、３２
を交差させて重ね合わせ、その重ね合わせ部分４０をレ
ーザ溶接により接合する場合を示す。[First Embodiment] A first embodiment will be described with reference to FIGS. 1 and 2. In this embodiment, the two electric wires 20, 30
Conductor exposed portions 22 and 32 from which the insulating coatings 21 and 31 have been peeled off are formed at intermediate portions in the longitudinal direction of the conductor exposed portions 22 and 32.
A case where the overlapping portions 40 are crossed and overlapped and the overlapping portion 40 is joined by laser welding is shown.
【００３３】接合の手順を図１に従って説明する。The joining procedure will be described with reference to FIG.
【００３４】まず、図１（ａ）、（ｂ）に示すように、
第１の電線２０の中間部に、カッター５１を用いて絶縁
被覆２１を剥ぐことにより、必要寸法の導体露出部２２
を形成する。ついで、図１（ｃ）に示すように、長手方
向中間部に導体露出部２２を形成した電線２０の一端２
０ａを押さえ治具５２により固定し、他端２０ｂを押し
込み機構６０の受板６１上に載せ、モータ（ステップモ
ータまたはサーボモータ等）６２の回転軸に設けた駆動
ロール６３で押さえる。First, as shown in FIGS. 1 (a) and 1 (b),
By removing the insulating coating 21 on the intermediate portion of the first electric wire 20 using the cutter 51, the conductor exposed portion 22 having a required size is obtained.
To form. Then, as shown in FIG. 1C, one end 2 of the electric wire 20 in which a conductor exposed portion 22 is formed in the longitudinal middle portion.
0a is fixed by the pressing jig 52, the other end 20b is placed on the receiving plate 61 of the pushing mechanism 60, and is pressed by the drive roll 63 provided on the rotating shaft of the motor (step motor or servo motor) 62.
【００３５】そして、図１（ｄ）に示すように、第１の
電線２０の上に第２の電線（他の部材）３０を交差する
ように配設し、該第２の電線３０の中間部に同様に設け
た導体露出部３２を、第１の電線２０の導体露出部２２
の上に重ね合わせ、その状態で、第２の電線３０の両端
３０ａ、３０ｂを押さえ治具５２により押さえる。Then, as shown in FIG. 1D, a second electric wire (another member) 30 is arranged on the first electric wire 20 so as to intersect with the second electric wire 30. To the conductor exposed portion 22 of the first electric wire 20.
Then, both ends 30a and 30b of the second electric wire 30 are pressed by the pressing jig 52 in this state.
【００３６】次に、２つの導体露出部２２、３２の重ね
合わせ部４０の直上に配置したレーザ溶接機５５から、
レーザ光５７を重ね合わせ部４０に向けて照射して溶接
を実行し、このレーザ光５７の照射と同時に押し込み機
構６０のモータ６２を作動させて、第１の電線２０の他
端２０ａ側を、矢印Ａ方向つまり溶接部５８の方向に押
し移動する。Next, from the laser welding machine 55 arranged directly above the overlapping portion 40 of the two conductor exposed portions 22 and 32,
The welding is performed by irradiating the laser beam 57 toward the overlapping portion 40, and at the same time as irradiating the laser beam 57, the motor 62 of the pushing mechanism 60 is operated to move the other end 20a side of the first electric wire 20. It pushes and moves in the direction of arrow A, that is, in the direction of the welded portion 58.
【００３７】このようにレーザ溶接を行った場合、通常
は図２（ａ）に示すように、溶融導体が飛散や蒸発した
り表面張力等で溶接部中央に引き寄せられたりすること
により、電線２０の溶接部５８の両側にくびれ５９が生
じることになるが、本実施例の場合は、導体露出部２
２、３２の中央部分が溶融状態にあるときに、第１の電
線２０の他端２０ｂ側を矢印Ａ方向に押し込むので、く
びれた部分に相当する導体材料が導体露出部２２に補充
される形になり、結果的には、図２（ｂ）のようにくび
れが無くなった状態で溶融導体が凝固する。When laser welding is performed in this manner, as shown in FIG. 2 (a), the molten conductor is usually scattered or evaporated, or attracted to the center of the welded portion due to surface tension or the like, so that the wire 20 Constrictions 59 are formed on both sides of the welded portion 58 of the conductor exposed portion 2 in the present embodiment.
Since the other end 20b side of the first electric wire 20 is pushed in the direction of the arrow A when the central portions of the second and the second wires 32 are in a molten state, the conductor exposed portion 22 is replenished with the conductor material corresponding to the constricted portion. As a result, as shown in FIG. 2B, the molten conductor is solidified with the constriction eliminated.
【００３８】したがって、くびれが無くなることで、接
続強度が増加する。このとき、第２の電線３０の導体露
出部３２側にも、押し込みによって補充された溶融導体
が回るので、導体露出部３２側のくびれも発生しなくな
る。Therefore, the connection strength is increased by eliminating the constriction. At this time, the molten conductor replenished by pushing also turns to the conductor exposed portion 32 side of the second electric wire 30, so that the constriction on the conductor exposed portion 32 side does not occur.
【００３９】このように、専用の端子金具等を用いるこ
となく、レーザ溶接によって２本の電線２０、３０を直
接くびれを生じずに中間接続することができるので、確
実強固な電線接続部を得ることができる。また、電線２
０の押し移動に際しては、モータ６２を回転させるだけ
でよいので、作業は簡単である。As described above, the two electric wires 20, 30 can be directly connected by laser welding without any constriction without using a dedicated terminal fitting or the like, so that a reliable and strong electric wire connecting portion can be obtained. be able to. Also, the electric wire 2
When pushing and moving 0, it is only necessary to rotate the motor 62, so the work is simple.
【００４０】なお、上記実施例では、第１の電線２０の
他端２０ａ側のみを溶接部５８方向に押し移動する場合
を示したが、一端２０ａ側も同時に溶接部５８に向かっ
て押し移動するようにしてもよい。In the above embodiment, the case where only the other end 20a side of the first electric wire 20 is pushed and moved toward the welding portion 58 has been shown, but the one end 20a side is also pushed and moved toward the welding portion 58 at the same time. You may do it.
【００４１】また、上記実施例では、第１の電線２０側
のみ押し移動する場合を示したが、図３に示すように、
第２の電線３０側も、新たに設けた押し込み機構６０に
よって、溶接時に矢印Ｂのように溶接部５８に向かって
押し移動するようにすれば、さらにくびれの解消効果を
上げることができ、接続強度がより増加する。その場合
も、第２の電線３０の両端３０ａ、３０ｂ側を溶接部５
８に向けて押し移動するようにしても勿論よい。Further, in the above embodiment, the case where only the first electric wire 20 side is pushed and moved is shown, but as shown in FIG.
On the second electric wire 30 side as well, if the pushing mechanism 60 newly provided pushes and moves toward the welded portion 58 as indicated by the arrow B at the time of welding, the effect of eliminating the constriction can be further enhanced, and the connection can be made. Strength increases more. In that case also, the ends 30a and 30b of the second electric wire 30 are welded to the welded portion 5
Of course, it may be configured so as to push and move toward 8.
【００４２】また、電線２０、３０同士の中間接続に限
らず、第１の電線２０の長手方向中間部に形成した導体
露出部２２に、第２の電線３０の端末部をＴ字形あるい
はＹ字形に接合する場合にも、本発明は適用できる。そ
の場合は、第１の電線２０側を溶接時に押し込み移動す
ればよい。Further, the end portion of the second electric wire 30 is not limited to the intermediate connection between the electric wires 20 and 30 but the end portion of the second electric wire 30 is T-shaped or Y-shaped in the conductor exposed portion 22 formed in the longitudinal middle portion of the first electric wire 20. The present invention can also be applied to the case of joining to. In that case, the first electric wire 20 side may be pushed and moved during welding.
【００４３】また、図４に示すように、接合する相手が
端子金具４５の場合であっても、本発明を適用すること
ができる。即ち、相手が端子金具４５の場合は、電線２
０の端部あるいは端部に近い位置を皮剥ぎして導体露出
部２２を形成しておき、これを端子金具４５に載せて、
加締部４６にて加締める。そしてその状態で、導体露出
部２２を溶接板部４７に重ね合わせて、重ね合わせ部４
９をレーザ溶接する。この場合にも、溶接中に電線２０
を溶接部５８側に押し移動することにより、導体露出部
２２側のくびれの発生を押さえながら溶接することがで
きる。Further, as shown in FIG. 4, the present invention can be applied even when the mating partner is the terminal fitting 45. That is, if the other party is the terminal fitting 45, the electric wire 2
The end of 0 or a position near the end is peeled off to form the exposed conductor portion 22, which is placed on the terminal fitting 45,
The caulking portion 46 caulks. Then, in this state, the conductor exposed portion 22 is superposed on the welding plate portion 47 to form the superposed portion 4
Laser weld No. 9. Also in this case, the electric wire 20 during welding
By pushing and moving to the welded portion 58 side, it is possible to perform welding while suppressing the occurrence of constriction on the conductor exposed portion 22 side.
【００４４】また、電線２０、３０の中の導体が単線の
場合はくびれの発生が比較的少ないが、撚線等の細線の
集束体から導体が構成されている場合は、空気層が導体
中にあるため、レーザ溶接時の飛散が大きくなりがちと
なる。したがって、そのような場合は、予め図５に示す
ように、導体露出部２２をプレスにより潰して（図５中
２５がプレスにより潰した部分）、密な状態に構成して
おき、それからレーザ溶接する。それにより、くびれを
少なくでき、押し移動によるくびれ解消作用をより確実
なものとすることができる。When the conductors in the electric wires 20 and 30 are single wires, the constriction is relatively small, but when the conductor is composed of a bundle of fine wires such as twisted wires, the air layer is in the conductor. Therefore, the scattering at the time of laser welding tends to be large. Therefore, in such a case, as shown in FIG. 5, the conductor exposed portion 22 is crushed by a press in advance (25 in FIG. 5 is a portion crushed by the press) to make a dense state, and then laser welding is performed. To do. Thereby, the squeezing can be reduced, and the squeezing elimination action by the push movement can be made more reliable.
【００４５】また、上記実施例では、押し込み機構６０
の駆動ロール６３と対向する部分を受台６１としていた
が、受台６１の代わりにロールを設けてもよい。その場
合、下側のロールを駆動ロールとしてもよい。Further, in the above embodiment, the pushing mechanism 60 is used.
Although the portion facing the drive roll 63 is used as the cradle 61, a roll may be provided instead of the cradle 61. In that case, the lower roll may be the drive roll.
【００４６】〔第２実施例〕図６を用いて本発明の第２
実施例を説明する。本実施例も、第１実施例と同様に、
２本の電線２０、３０の長手方向中間部に、絶縁被覆２
１、３１を剥いだ導体露出部２２、３２を形成し、その
導体露出部２２、３２を交差させて重ね合わせ、その重
ね合わせ部分４０をレーザ溶接により接合する場合を示
す。[Second Embodiment] A second embodiment of the present invention will be described with reference to FIG.
An example will be described. Also in this embodiment, similarly to the first embodiment,
Insulating coating 2 is provided on the middle portion of the two electric wires 20 and 30 in the longitudinal direction.
A case is shown in which the exposed conductor portions 22 and 32 from which the conductors 1 and 31 are peeled off are formed, the exposed conductor portions 22 and 32 are crossed and overlapped, and the overlapped portion 40 is joined by laser welding.
【００４７】接合の手順を図６に従って説明する。The procedure of joining will be described with reference to FIG.
【００４８】まず、図６（ａ）、（ｂ）に示すように、
第１の電線２０の中間部に、カッター５１を用いて絶縁
被覆２１を剥ぐことにより、必要寸法の導体露出部２２
を形成する。ついで、図（ｃ）に示すように、長手方向
中間部に導体露出部２２を形成した電線２０の一端２０
ａを押さえ治具５２により固定する。ここで両端２０
ａ、２０ｂを固定しても別段構わない。First, as shown in FIGS. 6 (a) and 6 (b),
By removing the insulating coating 21 on the intermediate portion of the first electric wire 20 using the cutter 51, the conductor exposed portion 22 having a required size is obtained.
To form. Then, as shown in FIG. 3C, one end 20 of the electric wire 20 having a conductor exposed portion 22 formed in the middle portion in the longitudinal direction.
A is fixed by a pressing jig 52. Here both ends 20
It does not matter if a and 20b are fixed.
【００４９】次に、図６（ｄ）に示すように、補助導体
として、幅の細い棒状に成形した銅板（銅の線条でもよ
い）７１をリール７２から繰出しながら、銅板７１の先
端部７１ａを、モータ８１で駆動される送り出しロール
８２によって、導体露出部２２の上面位置に供給する。
この場合の銅板７１は、図６（ｄ−１）に示すように所
定ピッチで側縁に切欠部７１ｂが設けられており、その
位置で溶断しやすくなっている。また、銅板７１の送り
出し位置が、導体露出部２２に対して斜め上方位置（こ
の位置はレーザ溶接機５５の邪魔にならない）となって
いる関係で、銅板７１の先端部７１ａは、折り曲げ具７
５によって斜めに折り曲げられ、ちょうど水平に配置さ
れた導体露出部２２に対して平行に位置決めされるよう
になっている。なお、銅板７１の幅はレーザ溶接のビー
ム径（例えば１ｍｍ程度）以下が望ましい。Next, as shown in FIG. 6 (d), as a supplementary conductor, a copper plate (which may be a copper strip) 71 formed in the shape of a thin rod is drawn from the reel 72 while the tip portion 71a of the copper plate 71 is being fed. Is supplied to the upper surface position of the conductor exposed portion 22 by a delivery roll 82 driven by a motor 81.
In this case, the copper plate 71 is provided with notches 71b at its side edges at a predetermined pitch as shown in FIG. 6 (d-1), which facilitates fusing at that position. Further, since the feeding position of the copper plate 71 is diagonally above the conductor exposed portion 22 (this position does not interfere with the laser welding machine 55), the tip portion 71a of the copper plate 71 has the bending tool 7
It is bent at an angle by 5 and is positioned in parallel with the conductor exposed portion 22 arranged just horizontally. The width of the copper plate 71 is preferably equal to or less than the beam diameter of laser welding (for example, about 1 mm).
【００５０】ついで、銅板７１の先端部７１ａを導体露
出部２２上に位置決めしたら、その上に、第１の電線２
０と交差するように第２の電線３０を配設し、該第２の
電線３０の中間部に同様に設けた導体露出部３２を、第
１の電線２０の導体露出部２２の上に、銅板７１の先端
部７１ａを間に挟んだ形で重ね合わせる。図６（ｄ−
２）はその重ね合わせ部４０を拡大して示す。そして、
その状態で、第２の電線３０の一端３０ａを押さえ治具
５２により押さえる。この場合も両端を固定しておいて
もよい。次に、２つの導体露出部２２、３２の重ね合わ
せ部４０の直上に配置したレーザ溶接機５５から、レー
ザ光５７を重ね合わせ部４０に向けて照射して溶接を実
行する。Then, the tip portion 71a of the copper plate 71 is positioned on the exposed conductor portion 22, and then the first electric wire 2 is placed thereon.
The second electric wire 30 is arranged so as to intersect with 0, and the conductor exposed portion 32 similarly provided at the intermediate portion of the second electric wire 30 is provided on the conductor exposed portion 22 of the first electric wire 20. The copper plate 71 is superposed with the tip portion 71a sandwiched therebetween. Fig. 6 (d-
2) shows the overlapping portion 40 in an enlarged manner. And
In this state, the one end 30a of the second electric wire 30 is held by the holding jig 52. Also in this case, both ends may be fixed. Next, welding is performed by irradiating a laser beam 57 toward the overlapping portion 40 from a laser welding machine 55 arranged directly above the overlapping portion 40 of the two conductor exposed portions 22 and 32.
【００５１】そうすると、通常はレーザ溶接した際に溶
接部の両側にくびれが生じるが、溶接時に銅板７１が補
助導体として溶接部に補充される形になるので、溶融金
属が充分な量確保され、くびれが発生しなくなり、接続
強度が高まる。また、レーザにより直接導体を接合する
ので、第１実施例と同様に、接続部の小型化、軽量化お
よび低コスト化を図ることができる。Then, normally, when laser welding is performed, constrictions occur on both sides of the welded portion, but since the copper plate 71 is supplemented to the welded portion as an auxiliary conductor during welding, a sufficient amount of molten metal is secured, The constriction will not occur and the connection strength will increase. Further, since the conductor is directly joined by the laser, it is possible to reduce the size, weight and cost of the connecting portion, as in the first embodiment.
【００５２】また、この実施例では、連続した銅板７１
の先端部７１ａを送り出して溶接部５８に供給するの
で、１度の溶接時に供給する銅板７１の量を適当に調節
することができる上、次々に行う溶接の都度、銅板７１
を間欠送りすることができる。したがって、同種多数あ
るいは異種多数の溶接を行う場合にも柔軟に対応するこ
とができ、銅板７１の供給をたやすく行うことができ
る。Further, in this embodiment, the continuous copper plate 71 is used.
Since the tip portion 71a of the copper plate 71 is sent out and supplied to the welded portion 58, the amount of the copper plate 71 to be supplied at the time of one welding can be appropriately adjusted, and the copper plate 71 can be welded one after another.
Can be sent intermittently. Therefore, it is possible to flexibly deal with the case where a large number of welds of the same type or a large number of different types are performed, and the copper plate 71 can be easily supplied.
【００５３】また、銅板７１の先端部７１ａを斜めに曲
げ、その斜めに曲げた先端部７１ａを導体露出部２２に
略平行に沿わせるようにしているので、銅板７１の送り
出し機構の位置を、レーザ溶接機の邪魔にならない位置
に余裕を持って配置することができる上、銅板７１の先
端部７１ａを溶接部５８に対して適切な位置、適切な姿
勢で供給することができ、銅板７１の供給不良等を起こ
すおそれもない。さらに、両方の電線２０、３０の導体
露出部２２、３２の間に銅板７１の先端部７１ａを挟む
ようにしているので、溶接時に銅板７１が位置ずれした
りせず、安定した溶接が可能になる。また、両方の導体
露出部２２、３２にバランス良く銅の溶融物が行き渡る
ようになる。Further, since the tip end portion 71a of the copper plate 71 is bent obliquely and the tip end portion 71a which is bent obliquely is made to extend substantially parallel to the conductor exposed portion 22, the position of the feeding mechanism of the copper plate 71 is set as follows. It can be arranged with a margin at a position that does not interfere with the laser welding machine, and the tip portion 71a of the copper plate 71 can be supplied to the welded portion 58 at an appropriate position and in an appropriate posture. There is no risk of supply failure. Furthermore, since the tip end portion 71a of the copper plate 71 is sandwiched between the conductor exposed portions 22 and 32 of both electric wires 20 and 30, the copper plate 71 is not displaced during welding, and stable welding is possible. Further, the copper melt is spread over both conductor exposed portions 22 and 32 in good balance.
【００５４】また、銅板７１には、１回の溶接毎に必要
な量だけ切り離せるように切欠部７１ｂが付いており、
レーザ溶接に応じて銅板７１の先端部７１ａが溶融する
と、切欠部７１ｂの位置で先端部７１ａが自動的に切り
離される。したがって、適量の銅が常に溶接部５８に供
給されることになるため、品質一定の接続部を作り出す
ことができる。切り離しが確実にできない場合は、銅板
７１を例えば矢印Ｃで示すように移動させることによ
り、溶融した先端部７１ａを確実に切り離すことができ
る。Further, the copper plate 71 is provided with a notch portion 71b so that it can be separated by a necessary amount each time welding is performed.
When the tip portion 71a of the copper plate 71 is melted in accordance with the laser welding, the tip portion 71a is automatically cut off at the position of the cutout portion 71b. Therefore, since a proper amount of copper is always supplied to the welded portion 58, it is possible to create a connection portion having a constant quality. If the separation cannot be reliably performed, the molten tip portion 71a can be reliably separated by moving the copper plate 71, for example, as shown by the arrow C.
【００５５】なお、上記実施例においては、銅板７１を
棒状に成形した形で、連続的に送り出すように構成した
場合を示したが、銅の小片（導体片）を用意して、溶接
の都度、小片の形で溶接部５８に銅（補助導体）供給し
てもよい。その場合、銅の小片を導体露出部２２に予め
何らかの手段により付着させておいてもよい。そうした
場合は、適量の銅をより簡単に供給できる。In the above embodiment, the case where the copper plate 71 is formed into a rod shape and continuously fed is shown. However, a small piece of copper (conductor piece) is prepared and welded each time. Alternatively, copper (auxiliary conductor) may be supplied to the welded portion 58 in the form of a small piece. In that case, a small piece of copper may be attached to the exposed conductor portion 22 in advance by some means. In such cases, it is easier to supply the proper amount of copper.
【００５６】また、電線２０、３０の中の導体が撚線等
の細線の集束体から構成されている場合は、前記第１実
施例と同様に、プレスにより導体露出部２２、３２を潰
してからレーザ溶接すれば、第１実施例と同様の効果が
得られる。特にプレスの際に銅の小片を一緒に圧着して
おけば、後の作業がより簡単になる。When the conductors in the electric wires 20, 30 are composed of a bundle of fine wires such as twisted wires, the conductor exposed portions 22, 32 are crushed by pressing as in the first embodiment. If laser welding is performed, the same effect as that of the first embodiment can be obtained. The subsequent work will be easier if the small pieces of copper are pressed together, especially when pressing.
【００５７】また、電線の中間接続以外にも本実施例を
適用できるのは、前記第１実施例と同じである。Further, the present embodiment can be applied to other than the intermediate connection of the electric wires as in the first embodiment.
【００５８】[0058]
【発明の効果】以上説明したように、請求項１の発明に
よれば、レーザ溶接により直接電線を他方の部材に接合
するので、専用の端子金具を用いて接続する場合と違
い、接続部の小型化、軽量化および低コスト化を図るこ
とができる。また、レーザ溶接による導体のくびれの発
生を押さえることができるので、接続強度を高めること
ができる。As described above, according to the first aspect of the invention, since the electric wire is directly joined to the other member by laser welding, unlike the case where the dedicated terminal fitting is used for the connection, It is possible to reduce the size, weight and cost. Further, since it is possible to suppress the generation of the constriction of the conductor due to the laser welding, it is possible to enhance the connection strength.
【００５９】請求項２の発明によれば、レーザ溶接によ
り直接電線を他方の部材に接合するので、請求項１の発
明と同様に、接続部の小型化、軽量化および低コスト化
を図ることができる。また、レーザ溶接による導体のく
びれの発生を押さえることができるので、接続強度を高
めることができる。According to the invention of claim 2, since the electric wire is directly joined to the other member by laser welding, the size, weight and cost of the connecting portion can be reduced as in the invention of claim 1. You can Further, since it is possible to suppress the generation of the constriction of the conductor due to the laser welding, it is possible to enhance the connection strength.
【００６０】請求項３の発明によれば、棒状の補助導体
の先端部を送り出して溶接部に供給するので、補助導体
を確実かつ容易に溶接部に供給することができる上、補
助導体の供給量の調節や、送り出しタイミング等の調節
を自由に行うことができる。したがって、同種多数ある
いは異種多数の溶接を行う場合にも柔軟に対応すること
ができ、補助導体の供給をたやすく行うことができる。
また、補助導体を例えば斜め上方から溶接部に送り出す
ように構成することができるので、補助導体の送り出し
装置のレイアウトがやりやすくなる。さらに、斜め方向
から補助導体を供給した場合にも、溶接部に適切な位
置、適切な姿勢で補助導体を供給することができるの
で、供給不良等を起こすおそれがなく、常に品質良好な
接続部を作り出すことができる。According to the third aspect of the present invention, since the tip end portion of the rod-shaped auxiliary conductor is sent out and supplied to the welding portion, the auxiliary conductor can be reliably and easily supplied to the welding portion, and the auxiliary conductor can be supplied. It is possible to freely adjust the amount and the delivery timing. Therefore, it is possible to flexibly deal with the case where a large number of welds of the same kind or a large number of different kinds are performed, and the auxiliary conductor can be easily supplied.
Further, since the auxiliary conductor can be configured to be delivered to the welded portion from diagonally above, the layout of the device for delivering the auxiliary conductor can be facilitated. Further, even when the auxiliary conductor is supplied from an oblique direction, the auxiliary conductor can be supplied to the welded portion at an appropriate position and in an appropriate posture, so that there is no fear of supply failure and the connection portion is always of good quality. Can be produced.
【００６１】請求項４の発明によれば、１回の溶接毎に
適量の補助導体が供給されることになるため、品質一定
の接続部を作り出すことができる。According to the invention of claim 4, since an appropriate amount of auxiliary conductor is supplied for each welding, it is possible to create a connection portion having a constant quality.
【００６２】請求項５の発明によれば、切り離しを確実
に行うことができ、適量の補助導体を溶接部に供給し
て、品質一定の接続部を作り出すことができる。According to the fifth aspect of the present invention, the disconnection can be surely performed, and an appropriate amount of the auxiliary conductor can be supplied to the welded portion to create a connection portion having a constant quality.
【００６３】請求項６の発明によれば、補助導体を溶接
しようとする部分間に挟むので、溶接時に補助導体がず
れたりする心配がなく、確実に溶融させて接続に寄与さ
せることができる。According to the invention of claim 6, since the auxiliary conductor is sandwiched between the portions to be welded, there is no fear of the auxiliary conductor being displaced during welding, and it is possible to surely melt and contribute to the connection.
【００６４】請求項７の発明によれば、２本以上の電線
の中間接続時のくびれの問題を解消することができ、接
続強度を高めることができる。According to the invention of claim 7, the problem of constriction at the time of intermediate connection of two or more electric wires can be solved, and the connection strength can be increased.
【００６５】請求項８の発明によれば、くびれ発生を確
実に押さえることができ、接続強度を安定的に増加する
ことができる。According to the invention of claim 8, it is possible to surely suppress the occurrence of the constriction and to stably increase the connection strength.
【００６６】請求項９の発明によれば、電線に端子を接
続する場合にもくびれの発生を押さえて高強度に接続す
ることができる。According to the ninth aspect of the present invention, even when the terminal is connected to the electric wire, it is possible to suppress the occurrence of the constriction and make the connection with high strength.
【００６７】請求項１０の発明によれば、導体が複数の
細線の集束体からなる場合にも、くびれの発生を有効に
防ぐことができ、接続強度を高めることができる。According to the tenth aspect of the present invention, the constriction can be effectively prevented and the connection strength can be increased even when the conductor is composed of a bundle of a plurality of thin wires.
【００６８】請求項１１の発明によれば、補助導体を導
体片の形で供給するので、常に適量の補助導体を溶接部
に供給することができ、品質の一定化を実現できると共
に、送り出し機構のような複雑な機構が不要となる。ま
た、導体露出部をプレスする際に同時に導体片を溶接箇
所に付着させておくので、補助導体の供給の手間がかか
らず、確実かつ容易に補助導体を適正位置に供給するこ
とができる。According to the eleventh aspect of the present invention, since the auxiliary conductor is supplied in the form of a conductor piece, it is possible to always supply an appropriate amount of auxiliary conductor to the welded portion, the quality can be made constant, and the feeding mechanism can be realized. A complicated mechanism such as is unnecessary. In addition, since the conductor piece is attached to the welding location at the same time when the conductor exposed portion is pressed, the auxiliary conductor can be reliably and easily supplied to the proper position without the trouble of supplying the auxiliary conductor.
【００６９】請求項１２の発明によれば、モータを作動
させるだけで、簡単確実に電線を押し移動させることが
でき、溶接時のくびれを解消することができる。According to the twelfth aspect of the present invention, the electric wire can be pushed and moved simply and reliably by operating the motor, and the constriction at the time of welding can be eliminated.
【図１】本発明の第１実施例のレーザ溶接方法を実施す
る手順を示す説明図である。FIG. 1 is an explanatory view showing a procedure for carrying out a laser welding method according to a first embodiment of the present invention.
【図２】本発明の第１実施例の効果の説明図であり、
（ａ）は比較例として示す溶接部の側面図、（ｂ）は本
実施例による溶接部を示す側面図である。FIG. 2 is an explanatory diagram of an effect of the first embodiment of the present invention,
(A) is a side view of the welded part shown as a comparative example, (b) is a side view showing the welded part according to the present embodiment.
【図３】本発明の第１実施例の変形例の説明図である。FIG. 3 is an explanatory diagram of a modified example of the first embodiment of the present invention.
【図４】本発明の第１実施例の他の変形例の説明図であ
る。FIG. 4 is an explanatory diagram of another modification of the first embodiment of the present invention.
【図５】本発明の第１実施例の更に他の変形例の説明図
である。FIG. 5 is an explanatory diagram of still another modification of the first embodiment of the present invention.
【図６】本発明の第２実施例のレーザ溶接方法を実施す
る手順を示す説明図である。FIG. 6 is an explanatory view showing a procedure for carrying out the laser welding method according to the second embodiment of the present invention.
【図７】従来例の説明図であり、（ａ）は平面図、
（ｂ）は側面図である。FIG. 7 is an explanatory view of a conventional example, (a) is a plan view,
(B) is a side view.
【図８】他の従来例を示す斜視図である。FIG. 8 is a perspective view showing another conventional example.
２０ 第１の電線 ２０ｂ 他端（一方側） ２１ 絶縁被覆 ２２ 導体露出部 ３０ 第２の電線（他の部材） ３２ 導体露出部 ４０ 重ね合わせ部 ４５ 端子金具（他の部材） ４９ 重ね合わせ部 ５８ 溶接部 ６１ 受台 ６２ モータ ６３ 駆動ロール ７１ 銅板（補助導体） ７１ａ 先端部 ７１ｂ 切欠部 20 1st electric wire 20b Other end (one side) 21 Insulation coating 22 Conductor exposed part 30 2nd electric wire (other member) 32 Conductor exposed part 40 Stacking part 45 Terminal metal fitting (other member) 49 Stacking part 58 Welded portion 61 Cradle 62 Motor 63 Drive roll 71 Copper plate (auxiliary conductor) 71a Tip portion 71b Cutout portion
Claims (12)
を形成し、該導体露出部を他の部材と重ね合わせて、該
重ね合わせ部をレーザ溶接するに際し、レーザ溶接時
に、前記電線の導体露出部の長手方向両側のうち少なく
とも一方側を溶接部側に押し移動することを特徴とする
電線のレーザ溶接方法。1. A conductor-exposed portion from which an insulating coating is peeled off is formed on an electric wire, the conductor-exposed portion is overlapped with another member, and the superposed portion is laser-welded. A laser welding method for an electric wire, characterized in that at least one side of the conductor exposed portion in the longitudinal direction is moved to the welding portion side.
を形成し、該導体露出部を他の部材に重ね合わせて、該
重ね合わせ部をレーザ溶接するに際し、レーザ溶接時
に、溶接部に対して補助導体を供給することを特徴とす
る電線のレーザ溶接方法。2. An electric wire is provided with a conductor exposed portion from which an insulating coating is peeled off, the conductor exposed portion is superposed on another member, and the superposed portion is laser-welded. A laser welding method of an electric wire, characterized in that an auxiliary conductor is supplied.
あって、前記補助導体を棒状に構成して、その先端部を
斜めに曲げ、前記溶接部に対してこの棒状の補助導体を
送り出して、前記斜めに曲げた先端部を前記導体露出部
に略平行に沿わせて、その状態でレーザ溶接することを
特徴とする電線のレーザ溶接方法。3. The method for laser welding an electric wire according to claim 2, wherein the auxiliary conductor is formed in a rod shape, a tip portion thereof is bent obliquely, and the rod-shaped auxiliary conductor is sent out to the welded portion. And a laser welding method for an electric wire, characterized in that the obliquely bent tip portion is made substantially parallel to the conductor exposed portion and laser welding is performed in that state.
あって、前記棒状の補助導体の外周に長手方向に間隔を
おいて、１溶接毎に溶融した先端部を切り離すための切
欠部を設けたことを特徴とする電線のレーザ溶接方法。4. The laser welding method for an electric wire according to claim 3, wherein a notch portion for separating the melted tip portion is formed at each outer periphery of the rod-shaped auxiliary conductor at intervals in the longitudinal direction. A laser welding method for an electric wire, which is characterized by being provided.
方法であって、前記棒状の補助導体を該補助導体の先端
部が溶融している時に移動することを特徴とする電線の
レーザ溶接方法。5. The laser welding method for an electric wire according to claim 3 or 4, wherein the rod-shaped auxiliary conductor is moved when a tip portion of the auxiliary conductor is melted. Method.
レーザ溶接方法であって、前記補助導体を、前記電線の
導体露出部と他の部材との間に挟むことを特徴とする電
線のレーザ溶接方法。6. The laser welding method for an electric wire according to claim 2, wherein the auxiliary conductor is sandwiched between a conductor exposed portion of the electric wire and another member. Laser welding method for electric wires.
レーザ溶接方法であって、前記他方の部材も電線であ
り、両方の電線の長手方向中間部に前記導体露出部を形
成し、それら両電線の導体露出部を交差状態で重ね合わ
せて、該重ね合わせ部をレーザ溶接することを特徴とす
る電線のレーザ溶接方法。7. The method of laser welding an electric wire according to claim 1, wherein the other member is also an electric wire, and the conductor exposed portion is formed at a longitudinal intermediate portion of both electric wires. A laser welding method for electric wires, characterized in that the conductor exposed portions of both electric wires are superposed in a crossing state, and the superposed portions are laser-welded.
あって、前記他方の部材としての電線の導体露出部の長
手方向両側のうち少なくとも一方側を溶接部側に押し移
動することを特徴とする電線のレーザ溶接方法。8. The laser welding method for an electric wire according to claim 7, wherein at least one side of the conductor exposed portion of the electric wire as the other member in the longitudinal direction is pushed and moved to the welding portion side. Laser welding method for electric wires.
レーザ溶接方法であって、前記他方の部材が端子金具で
あり、該端子金具に前記電線の導体露出部を重ね合わせ
て、該重ね合わせ部をレーザ溶接することを特徴とする
電線のレーザ溶接方法。9. The method for laser welding an electric wire according to claim 1, wherein the other member is a terminal fitting, and the conductor exposed portion of the electric wire is superposed on the terminal fitting, A laser welding method for an electric wire, characterized in that the overlapping portion is laser-welded.
のレーザ溶接方法であって、前記電線の中の導体が複数
の細線の集束体である場合、前記導体露出部をプレスに
より潰してからレーザ溶接することを特徴とする電線の
レーザ溶接方法。10. The method for laser welding an electric wire according to claim 1, wherein when the conductor in the electric wire is a bundle of a plurality of thin wires, the exposed conductor portion is crushed by a press. A laser welding method for electric wires, characterized in that the laser welding is performed first.
であって、前記電線の中の導体が複数の細線の集束体で
ある場合、前記補助導体を独立した導体片により構成し
て、前記導体露出部を、前記補助導体としての導体片と
共にプレスにより潰して、該導体片を導体露出部に付着
させてからレーザ溶接することを特徴とする電線のレー
ザ溶接方法。11. The laser welding method for an electric wire according to claim 2, wherein when the conductor in the electric wire is a bundle of a plurality of thin wires, the auxiliary conductor is constituted by an independent conductor piece, A laser welding method for an electric wire, comprising: crushing a conductor exposed portion together with a conductor piece as the auxiliary conductor by a press to attach the conductor piece to the conductor exposed portion and then performing laser welding.
接方法であって、前記電線の押し移動を、受台上または
ロール上に載置した電線を、受台またはロールと対向し
て前記電線を挟む駆動ロールをモータで回転させること
により行うことを特徴とする電線のレーザ溶接方法。12. The laser welding method for an electric wire according to claim 1, wherein the electric wire placed on a pedestal or a roll is pushed and moved so as to face the pedestal or the roll. A laser welding method for electric wires, which is performed by rotating a drive roll that holds the electric wires with a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26406094A JP3370799B2 (en) | 1994-10-27 | 1994-10-27 | Laser welding method of electric wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26406094A JP3370799B2 (en) | 1994-10-27 | 1994-10-27 | Laser welding method of electric wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08118051A true JPH08118051A (en) | 1996-05-14 |
| JP3370799B2 JP3370799B2 (en) | 2003-01-27 |
Family
ID=17397980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26406094A Expired - Lifetime JP3370799B2 (en) | 1994-10-27 | 1994-10-27 | Laser welding method of electric wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3370799B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6640436B1 (en) * | 1997-10-16 | 2003-11-04 | Nec Electronics Corporation | Method of fabricating a coated metallic wire, method of removing insulation from the coated metallic wire and method of fabricating a semiconductor device with the wire |
-
1994
- 1994-10-27 JP JP26406094A patent/JP3370799B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6640436B1 (en) * | 1997-10-16 | 2003-11-04 | Nec Electronics Corporation | Method of fabricating a coated metallic wire, method of removing insulation from the coated metallic wire and method of fabricating a semiconductor device with the wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3370799B2 (en) | 2003-01-27 |
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