JP3425865B2 - Laser welding method for bus bar of electric junction box - Google Patents
Laser welding method for bus bar of electric junction boxInfo
- Publication number
- JP3425865B2 JP3425865B2 JP18437098A JP18437098A JP3425865B2 JP 3425865 B2 JP3425865 B2 JP 3425865B2 JP 18437098 A JP18437098 A JP 18437098A JP 18437098 A JP18437098 A JP 18437098A JP 3425865 B2 JP3425865 B2 JP 3425865B2
- Authority
- JP
- Japan
- Prior art keywords
- laser welding
- terminal
- bus bar
- laser
- pattern
- 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.)
- Expired - Fee Related
Links
- 238000003466 welding Methods 0.000 title claims description 93
- 238000000034 method Methods 0.000 title claims description 33
- 238000005452 bending Methods 0.000 claims description 27
- 238000005192 partition Methods 0.000 claims description 25
- 230000000873 masking effect Effects 0.000 claims description 19
- 238000003825 pressing Methods 0.000 claims description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000010730 cutting oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Landscapes
- Laser Beam Processing (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電気接続箱に収容
するバスバーのレーザ溶接方法に関し、特に、バスバー
にタブ端子をレーザ溶接するときに発生するスパッタ等
が、タブ端子の端子部に付着するのを防止できるように
したものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser welding method for a bus bar housed in an electrical connection box, and in particular, spatters generated when laser welding a tab terminal to the bus bar adheres to the terminal portion of the tab terminal. This is to prevent this.
【０００２】[0002]
【従来の技術】自動車用ワイヤーハーネス等を種々の電
装品に分岐接続するのに用いられる電気接続箱は、分岐
接続点を１個所に集中させて、配線を合理的かつ経済的
に分岐接続するものであり、ワイヤーハーネスの高密度
化に伴って、車種別又は用途別に種々の形式のものが開
発されている。2. Description of the Related Art An electric junction box used for branching and connecting a wire harness for an automobile to various electric components has a branch connecting point concentrated at one place to branch and connect wiring reasonably and economically. With the increasing density of wire harnesses, various types have been developed depending on the vehicle type or application.
【０００３】上記のような電気接続箱としては、図７に
示すように、プレス金型でフープ材６からバスバー７Ａ
〜７Ｃをそれぞれ打ち抜き、この各バスバー７Ａ〜７Ｃ
のパターン部からタブ端子７ａ，７ｂを上下方向にそれ
ぞれ切り起こすと共に、各バスバー７Ａ〜７Ｃの間に絶
縁板８Ａ〜８Ｃをそれぞれ介設して積層し、これを電気
接続箱９のアッパーケース９Ａとロアケース９Ｂとに収
容したものが有る。As an electric connection box as described above, as shown in FIG. 7, a hose member 6 to a bus bar 7A are formed by a press die.
~ 7C are punched out, and each bus bar 7A ~ 7C
The tab terminals 7a and 7b are cut and raised from the pattern portion in the vertical direction, respectively, and insulating plates 8A to 8C are respectively interposed between the bus bars 7A to 7C to be laminated, and the upper case 9A of the electric junction box 9 is formed. And the lower case 9B.
【０００４】上記各バスバー７Ａ〜７Ｃの内、図６に示
すような１個のバスバー７を例にとれば、バスバー７の
パターン部の端部には、上向きのタブ端子７ａ−１〜７
ａ−３と下向きのタブ端子７ｂ−１〜７ｂ−４がそれぞ
れ一体形成されている。バスバー７のパターン部から長
いタブ端子７ａ−１〜，７ｂ−１〜を切り起こすために
は、パターン部にタブ端子７ａ−１〜，７ｂ−１〜の切
り起こしのためのスペースが必要となる。Of the bus bars 7A to 7C, one bus bar 7 as shown in FIG. 6 is taken as an example, and upward tab terminals 7a-1 to 7 are provided at the ends of the pattern portion of the bus bar 7.
a-3 and downward tab terminals 7b-1 to 7b-4 are integrally formed. In order to cut and raise the long tab terminals 7a-1 to 7b-1 from the pattern portion of the bus bar 7, a space for cutting and raising the tab terminals 7a-1 to 7b-1 is required in the pattern portion. .
【０００５】このように、タブ端子７ａ，７ｂの切り起
こしのための広いスペースがデッドスペースとなって、
バスバー７を小型・高密度化できないので、バスバー積
層数を減少できない。In this way, a wide space for cutting and raising the tab terminals 7a and 7b becomes a dead space,
Since the busbar 7 cannot be made compact and high-density, the number of laminated busbars cannot be reduced.
【０００６】このため、図５に示すように、バスバー７
のパターン部の上面に、別体のタブ端子７ｄの曲げしろ
部７ｅを当てがって、この曲げしろ部７ｅをパターン部
にレーザ溶接ａすることが考えられる。Therefore, as shown in FIG. 5, the bus bar 7
It is conceivable that the bending margin portion 7e of the separate tab terminal 7d is applied to the upper surface of the pattern portion, and the bending margin portion 7e is laser-welded to the pattern portion.
【０００７】このようなバスバー構造とすることによ
り、タブ端子の切り起こし等のための広いスペースが不
要となり、これらのスペースに別のパターン部を増設す
ることができるから、パターン部が高密度化ができるの
で、バスバー積層数を減少できるようになる。With such a bus bar structure, a wide space for cutting and raising the tab terminals is not required, and another pattern portion can be added to these spaces, so that the pattern portion has a high density. Therefore, the number of laminated bus bars can be reduced.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、タブ端
子７ｄの曲げしろ部７ｅをバスバー７のパターン部のレ
ーザ溶接する際に、レーザビームを照射すると、レーザ
溶接部から金属の溶融物であるスパッタが粒状となって
周囲に飛び散ると同時に、切削油、メッキなどに含まれ
るカーボンの煤や合金中の金属酸化物の混合物も周囲に
飛び散って、タブ端子７ｄの端子部７ｆに付着すると、
端子接続（接点）部分に接触不良が生じやすくなって、
端子接続の信頼性が低下するという問題があった。However, when a laser beam is irradiated during laser welding of the bending margin portion 7e of the tab terminal 7d to the pattern portion of the bus bar 7, spatter, which is a molten metal, is sputtered from the laser welding portion. When it becomes granular and scatters to the surroundings, at the same time, soot of carbon contained in cutting oil, plating, etc. or a mixture of metal oxides in the alloy scatters to the surroundings and adheres to the terminal portion 7f of the tab terminal 7d.
Contact failure is likely to occur at the terminal connection (contact) part,
There is a problem that the reliability of terminal connection is reduced.
【０００９】本発明は、上記問題を解消するためになさ
れたもので、バスバーにタブ端子をレーザ溶接するとき
に発生するスパッタ等が、タブ端子の端子部に付着する
のを防止できるようにした電気接続箱のバスバーの溶接
方法を提供するものである。The present invention has been made to solve the above problems, and it is possible to prevent the spatter and the like generated when laser welding a tab terminal to a bus bar from adhering to the terminal portion of the tab terminal. A method of welding a bus bar of an electrical junction box is provided.
【００１０】[0010]
【課題を解決するための手段】上記課題を解決するため
に、本発明の請求項１は、電気接続箱に収容されるバス
バーのパターン部に別体のタブ端子の曲げしろ部を当て
がい、この曲げしろ部をパターン部にレーザ溶接するレ
ーザ溶接方法であって、上記レーザ溶接時に、飛び散っ
て付着したスパッタ等を保持する素材で成る衝立て部材
でタブ端子の端子部をマスキングした後に、レーザ溶接
部に向けて、所定の角度から所定の風速で気体を噴射し
て、レーザ溶接時に発生するスパッタ等をレーザ溶接部
から外方へ吹き飛ばすようにしたことを特徴とする電気
接続箱のバスバーのレーザ溶接方法を提供するものであ
る。In order to solve the above-mentioned problems, the first aspect of the present invention is to apply a bending margin portion of a separate tab terminal to a pattern portion of a bus bar housed in an electric junction box. A laser welding method for laser-welding this bending margin portion to a pattern portion, wherein after the terminal portion of the tab terminal is masked with a partition member made of a material that holds spatter etc. scattered and adhered during the laser welding, A gas bar is jetted at a predetermined wind speed from a predetermined angle toward the welded part, and spatters generated during laser welding are blown outward from the laser welded part. A laser welding method is provided.
【００１１】本発明の請求項２は、電気接続箱に収容さ
れるバスバーのパターン部に別体のタブ端子の曲げしろ
部を当てがい、この曲げしろ部をパターン部にレーザ溶
接するレーザ溶接方法であって、上記レーザ溶接時に、
タブ端子の端子部をマスキングする衝立て部材のマスキ
ング部の当接部に、端子部の一方の側縁を当接させると
共に、マスキング部の開閉可能なチャック部を端子部の
他方の側縁に当接させて、上記当接部とチャック部の間
で端子部の両側縁をチャックした後に、レーザ溶接部に
向けて、所定の角度から所定の風速で気体を噴射して、
レーザ溶接時に発生するスパッタ等をレーザ溶接部から
外方へ吹き飛ばすようにしたことを特徴とする電気接続
箱のバスバーのレーザ溶接方法を提供するものである。A second aspect of the present invention is a laser welding method in which a bending margin portion of a separate tab terminal is applied to a pattern portion of a bus bar housed in an electric connection box, and the bending margin portion is laser-welded to the pattern portion. And, at the time of laser welding,
One side edge of the terminal portion is brought into contact with the abutting portion of the masking portion of the partition member that masks the terminal portion of the tab terminal, and the openable / closable chuck portion of the masking portion is provided on the other side edge of the terminal portion. After abutting and chucking both side edges of the terminal portion between the abutting portion and the chuck portion, toward the laser welding portion, gas is jetted at a predetermined wind speed from a predetermined angle,
Provided is a laser welding method for a bus bar of an electrical connection box, which is characterized in that spatters and the like generated during laser welding are blown outward from a laser welding portion.
【００１２】本発明の請求項３は、電気接続箱に収容さ
れるバスバーのパターン部に別体のタブ端子の曲げしろ
部を当てがい、この曲げしろ部をパターン部にレーザ溶
接するレーザ溶接方法であって、上記レーザ溶接時に、
タブ端子の端子部をマスキングする衝立て部材のマスキ
ング部に連なって形成された押え付け部で、タブ端子の
曲げしろ部をバスバーのパターン部に押え付けて、曲げ
しろ部の浮き上がりを矯正した後に、レーザ溶接部に向
けて、所定の角度から所定の風速で気体を噴射して、レ
ーザ溶接時に発生するスパッタ等をレーザ溶接部から外
方へ吹き飛ばすようにしたことを特徴とする電気接続箱
のバスバーのレーザ溶接方法を提供するものである。A third aspect of the present invention is a laser welding method in which a bending margin portion of a separate tab terminal is applied to a pattern portion of a bus bar housed in an electric junction box, and the bending margin portion is laser-welded to the pattern portion. And, at the time of laser welding,
After pressing the bending margin of the tab terminal against the pattern of the bus bar with the pressing section that is formed in series with the masking section of the partitioning member that masks the terminal section of the tab terminal, correct the lifting of the bending margin. , An electric connection box characterized in that a gas is jetted at a predetermined wind speed from a predetermined angle toward the laser welded portion, and spatters generated during laser welding are blown outward from the laser welded portion. A method for laser welding a bus bar is provided.
【００１３】請求項３において、上記レーザ溶接時に、
押え付け部に形成された位置決め凸部を、バスバーのパ
ターン部を載置した受け台に形成された位置決め凹部に
嵌入して、タブ端子を位置決めする構成が好ましい（請
求項４）。In claim 3, during the laser welding,
It is preferable that the positioning convex portion formed on the pressing portion is fitted into the positioning concave portion formed on the pedestal on which the pattern portion of the bus bar is placed to position the tab terminal (claim 4).
【００１４】[0014]
【発明の作用および効果】本発明の請求項１によれば、
レーザ溶接時に、レーザ溶接部に気体を噴射することに
より、レーザ溶接時に発生するスパッタ等がレーザ溶接
部から外方へ吹き飛ばされるようになるから、スパッタ
等がタブ端子の端子部に付着するのが未然に防止できる
ので、端子接続（接点）部分に接触不良が生じなくなっ
て、端子接続の信頼性が向上するようになる。According to claim 1 of the present invention,
During laser welding, by injecting gas into the laser weld, spatter etc. generated during laser welding will be blown outward from the laser weld, so spatter etc. may adhere to the terminal part of the tab terminal. Since this can be prevented in advance, contact failure does not occur in the terminal connection (contact point) portion, and the reliability of terminal connection is improved.
【００１５】また、レーザ溶接時に、衝立て部材でタブ
端子の端子部をマスキングすると、スパッタ等がタブ端
子の端子部に付着するのが確実に防止できる。Further, when the terminal portion of the tab terminal is masked by the partition member during laser welding, it is possible to reliably prevent spatter and the like from adhering to the terminal portion of the tab terminal.
【００１６】さらに、衝立て部材は、飛び散って付着し
たスパッタ等を保持する素材であるから、衝立て部材に
付着したスパッタ等が冷えて固化したときに衝立て部材
から落下しないので、スパッタ等が周囲に飛び散るのが
防止できる。Furthermore, since the partition member is a material that holds spatter and the like scattered and attached, since spatter and the like adhered to the partition member does not drop from the partition member when it cools and solidifies, spatter and the like is generated. It can be prevented from scattering around.
【００１７】本発明の請求項２によれば、レーザ溶接時
に、レーザ溶接部に気体を噴射することにより、レーザ
溶接時に発生するスパッタ等がレーザ溶接部から外方へ
吹き飛ばされるようになるから、スパッタ等がタブ端子
の端子部に付着するのが未然に防止できるので、端子接
続（接点）部分に接触不良が生じなくなって、端子接続
の信頼性が向上するようになる。また、レーザ溶接時
に、衝立て部材でタブ端子の端子部をマスキングする
と、スパッタ等がタブ端子の端子部に付着するのが確実
に防止できる。さらに、衝立て部材のマスキング部の当
接部に、端子部の一方の側縁を当接させると共に、マス
キング部の開閉可能なチャック部を端子部の他方の側縁
に当接させて、上記当接部とチャック部の間で端子部の
両側縁をチャックすると、チャックにより端子部の接触
面に傷が付きにくくなる。According to the second aspect of the present invention, by injecting gas into the laser welding portion during laser welding, spatters and the like generated during laser welding are blown outward from the laser welding portion. Since it is possible to prevent spatter or the like from adhering to the terminal portion of the tab terminal, contact failure does not occur at the terminal connection (contact point) portion, and the reliability of the terminal connection is improved. Further, when the terminal portion of the tab terminal is masked with a partition member during laser welding, it is possible to reliably prevent spatter and the like from adhering to the terminal portion of the tab terminal. Further, one side edge of the terminal portion is brought into contact with the contact portion of the masking portion of the partition member, and the openable / closable chuck portion of the masking portion is brought into contact with the other side edge of the terminal portion. When the both side edges of the terminal portion are chucked between the contact portion and the chuck portion, the contact surface of the terminal portion is less likely to be scratched by the chuck.
【００１８】本発明の請求項３によれば、レーザ溶接時
に、レーザ溶接部に気体を噴射することにより、レーザ
溶接時に発生するスパッタ等がレーザ溶接部から外方へ
吹き飛ばされるようになるから、スパッタ等がタブ端子
の端子部に付着するのが未然に防止できるので、端子接
続（接点）部分に接触不良が生じなくなって、端子接続
の信頼性が向上するようになる。また、レーザ溶接時
に、衝立て部材でタブ端子の端子部をマスキングする
と、スパッタ等がタブ端子の端子部に付着するのが確実
に防止できる。さらに、レーザ溶接時に、衝立て部材の
マスキング部に連なって形成された押え付け部で、タブ
端子の曲げしろ部をバスバーのパターン部に押え付け
て、曲げしろ部の浮き上がりを矯正すると、レーザ溶接
不良が有効に防止できる。According to the third aspect of the present invention, during the laser welding, by injecting gas into the laser welding portion, spatters and the like generated during the laser welding are blown outward from the laser welding portion. Since it is possible to prevent spatter or the like from adhering to the terminal portion of the tab terminal, contact failure does not occur at the terminal connection (contact point) portion, and the reliability of the terminal connection is improved. Further, when the terminal portion of the tab terminal is masked with a partition member during laser welding, it is possible to reliably prevent spatter and the like from adhering to the terminal portion of the tab terminal. Furthermore, during laser welding, the press-fitting part formed in series with the masking part of the partition member presses the bend allowance of the tab terminal against the pattern of the bus bar to correct the rise of the bend allowance, and laser welding is performed. Defects can be effectively prevented.
【００１９】請求項４のように、レーザ溶接時に、押え
付け部に形成された位置決め凸部を、バスバーのパター
ン部を載置した受け台に形成された位置決め凹部に嵌入
して、タブ端子を位置決めすると、タブ端子を位置決め
した状態で正確な位置にレーザ溶接できる。According to a fourth aspect of the present invention, at the time of laser welding, the positioning convex portion formed on the pressing portion is fitted into the positioning concave portion formed on the pedestal on which the pattern portion of the bus bar is placed, so that the tab terminal is formed. Once positioned, the laser welding can be performed at the correct position with the tab terminal positioned.
【００２０】[0020]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して詳細に説明する。なお、従来技術と同一構成
・作用の箇所は同一番号を付して詳細な説明は省略す
る。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that parts having the same configurations and functions as those of the conventional technique are denoted by the same reference numerals, and detailed description thereof will be omitted.
【００２１】図１は第１実施形態のバスバー７のレーザ
溶接方法である。FIG. 1 shows a laser welding method for the bus bar 7 of the first embodiment.
【００２２】図１（ａ）（ｂ）に示すように、Ｌ字状に
折り曲げた別体のタブ端子７ｄを用意し、バスバー７の
パターン部の端部の上面に、タブ端子７ｄを曲げしろ部
７ｅを当てがう。そして、このタブ端子７ｄの曲げしろ
部７ｅを、ほぼ真上からレーザビームＬＢでレーザ溶接
ａする。As shown in FIGS. 1 (a) and 1 (b), a separate tab terminal 7d bent in an L shape is prepared, and the tab terminal 7d should be bent on the upper surface of the end of the pattern portion of the bus bar 7. Apply section 7e. Then, the bending margin portion 7e of the tab terminal 7d is laser-welded a with the laser beam LB from almost right above.
【００２３】このレーザ溶接時に、エアー（空気）ノズ
ル１０から、レーザ溶接部ａに向けて所定の角度Ｄから
所定の風速ＥでエアーＡを噴射する。At the time of this laser welding, the air A is jetted from the air nozzle 10 toward the laser welded portion a at a predetermined wind speed E from a predetermined angle D.
【００２４】上記ノズル１０からは、エアーＡに代え
て、アルゴンや窒素のような不活性ガスを噴射するのが
好ましい。すなわち、噴射するのがエアーＡであると、
レーザ溶接部ａの溶湯に空気による酸化物が巻き込まれ
るおそれがあるが、不活性ガスであれば、このようなお
それがなくなるからである。Instead of the air A, it is preferable to inject an inert gas such as argon or nitrogen from the nozzle 10. That is, when the air A is injected,
This is because oxides due to air may be entrained in the molten metal of the laser welded portion a, but with an inert gas, such fear is eliminated.
【００２５】上記ノズル１０からエアーＡを噴射する角
度Ｄは、レーザ溶接方向に対して、略直角の位置Ｄ１で
あるのが最も好ましい。この位置Ｄ１であれば、スパッ
タ等がレーザ溶接部ａの周囲に広く飛び散りにくくな
る。しかし、レーザ溶接方向に対して、略直４５度の位
置Ｄ２までの範囲であれば実用上は差し支えない。The angle D at which the air A is jetted from the nozzle 10 is most preferably a position D1 which is substantially perpendicular to the laser welding direction. At this position D1, spatter and the like are less likely to widely spread around the laser welded portion a. However, there is no problem in practical use as long as it is within the range up to the position D2 which is approximately 45 degrees with respect to the laser welding direction.
【００２６】上記ノズル１０から噴射するエアーＡの風
速Ｅは、例えばタブ端子７が１．３ｍｍ幅でバスバー７
に２枚重ねしていて、レーザビームＬＢのエネルギーが
２５ジュール程度のときに１００ｍ／ｓｅｃ以上であ
り、この風速Ｅであれば、スパッタ等を効果的に外方へ
吹き飛すことができる。この風速は、実際上は１２０ｍ
／ｓｅｃ程度が最適である。The wind velocity E of the air A jetted from the nozzle 10 is, for example, when the tab terminal 7 has a width of 1.3 mm and the bus bar 7 has a width of 1.3 mm.
When the energy of the laser beam LB is about 25 joules, it is 100 m / sec or more, and at this wind speed E, spatter and the like can be effectively blown outward. This wind speed is actually 120m
/ Sec is optimal.
【００２７】第１実施形態のレーザ溶接方法であれば、
ノズル１０から噴射されるエアーＡにより、レーザ溶接
時に発生するスパッタ等がレーザ溶接部ａから外方へ吹
き飛ばされるようになるから、スパッタ等がタブ端子７
ｄの端子部７ｆに付着するのが未然に防止できるので、
端子接続（接点）部分に接触不良が生じなくなって、端
子接続の信頼性が向上する。According to the laser welding method of the first embodiment,
The air A jetted from the nozzle 10 blows spatters and the like generated during laser welding outward from the laser welding portion a, so that the spatters and the like are tab terminals 7.
Since it can be prevented from adhering to the terminal portion 7f of d,
A contact failure does not occur in the terminal connection (contact) portion, and the reliability of the terminal connection is improved.
【００２８】図２は第２実施形態のバスバー７のレーザ
溶接方法である。FIG. 2 shows a laser welding method for the bus bar 7 according to the second embodiment.
【００２９】図２（ａ）（ｂ）に示すように、Ｌ字状に
折り曲げた別体のタブ端子７ｄを用意し、バスバー７の
パターン部の端部の上面に、タブ端子７ｄを曲げしろ部
７ｅを当てがう。そして、このタブ端子７ｄの曲げしろ
部７ｅを、ほぼ真上からレーザビームＬＢでレーザ溶接
ａする。As shown in FIGS. 2 (a) and 2 (b), a separate tab terminal 7d bent into an L shape is prepared, and the tab terminal 7d should be bent on the upper surface of the end portion of the pattern portion of the bus bar 7. Apply section 7e. Then, the bending margin portion 7e of the tab terminal 7d is laser-welded a with the laser beam LB from almost right above.
【００３０】このレーザ溶接時に、エアー（空気）ノズ
ル１０から、レーザ溶接部ａに向けて所定の角度Ｄから
所定の風速ＥでエアーＡを噴射する。During the laser welding, the air A is jetted from the air nozzle 10 toward the laser welded portion a at a predetermined wind speed E from a predetermined angle D.
【００３１】ここまでは、第１実施形態のレーザ溶接方
法と同じであるが、第２実施形態のレーザ溶接方法で
は、レーザ溶接時に、板状の衝立て部材１１でタブ端子
７ｄの端子部７ｆをマスキングする。The process up to this point is the same as the laser welding method of the first embodiment, but in the laser welding method of the second embodiment, the terminal portion 7f of the tab terminal 7d is cut by the plate-shaped partition member 11 during laser welding. Mask.
【００３２】この衝立て部材１１は、図２の例のよう
に、複数個のタブ端子７ｄを横に並べた状態で連続的に
レーザ溶接するような場合には、複数個のタブ端子７ｄ
を一度にマスキングできるような形状に形成する。この
場合には、衝立て部材１１のエアーＡの噴射方向と反対
側には、エアーＡにより外方へ吹き飛ばされたスパッタ
等がそれ以上に飛び散らないようにカバーする横壁部１
１ａを形成するのが好ましい。なお、この横壁部１１ａ
は、例えば右端のタブ端子７ｄをレーザ溶接するときに
は、この右端のタブ端子７ｄのすぐ左側に位置するとい
うように、タブ端子７ｄの横並び方向に移動できるよう
にしても良い。As shown in the example of FIG. 2, the partition member 11 has a plurality of tab terminals 7d when laser welding is continuously performed with the plurality of tab terminals 7d arranged side by side.
Is formed into a shape that can be masked at once. In this case, the side wall 1 that covers the partition member 11 on the side opposite to the air A injection direction so as to prevent the spatter and the like blown outward by the air A from scattering further.
It is preferable to form 1a. Incidentally, this lateral wall portion 11a
For example, when the tab terminal 7d at the right end is laser-welded, the tab terminal 7d may be moved in the side-by-side direction such that it is located immediately to the left of the tab terminal 7d at the right end.
【００３３】第２実施形態のレーザ溶接方法であれば、
レーザ溶接時に、タブ端子７ｄの端子部７ｆをマスキン
グする衝立て部材１１により、スパッタ等がタブ端子７
ｄの端子部７ｆに付着するのが確実に防止できる。According to the laser welding method of the second embodiment,
At the time of laser welding, the projection member 11 for masking the terminal portion 7f of the tab terminal 7d prevents spatter or the like from coming into contact with the tab terminal 7.
It can be reliably prevented from adhering to the terminal portion 7f of d.
【００３４】上記衝立て部材１１は、飛び散って付着し
たスパッタ等を保持する素材、例えばプラスチックや粘
着テープを貼付たものであると、衝立て部材１１に付着
したスパッタ等が冷えて固化したときに衝立て部材１１
から落下しないので、スパッタ等が周囲に飛び散るのが
防止できる。When the partition member 11 is made of a material that holds scattered spatter and the like attached thereto, such as plastic or an adhesive tape, when the partition member 11 cools and solidifies spatter or the like. Screen member 11
Since it does not fall from the inside, spatter etc. can be prevented from scattering around.
【００３５】図３及び図４は第３実施形態のレーザ溶接
方法である。3 and 4 show a laser welding method according to the third embodiment.
【００３６】図３に示すように、衝立て部材１２は、タ
ブ端子７ｄの端子部７ｆをマスキングするマスキング部
１２ａと、このマスキング部１２ａの下部に連なり逆Ｌ
字状に折り曲げて形成された押え付け部１２ｂとを有
し、この押え付け部１２ｂでタブ端子７ｄの曲げしろ部
７ｅをバスバー７のパターン部に上方から押え付けるよ
うになっている。As shown in FIG. 3, the partition member 12 has a masking portion 12a for masking the terminal portion 7f of the tab terminal 7d and a reverse L which is continuous with the lower portion of the masking portion 12a.
The pressing portion 12b is formed by bending it in a letter shape, and the pressing portion 12b presses the bending margin portion 7e of the tab terminal 7d against the pattern portion of the bus bar 7 from above.
【００３７】この押え付け部１２ｂの上部には、タブ端
子７ｄの折り曲げ部７ｅのレーザ溶接位置（×位置を参
照）に対応する穴１２ｆがあけられると共に、押え付け
部１２ｂの両側には、下向きに折り曲げられた位置決め
凸部１２ｃが形成されている。A hole 12f corresponding to the laser welding position (see the X position) of the bent portion 7e of the tab terminal 7d is formed in the upper portion of the holding portion 12b, and both sides of the holding portion 12b face downward. The positioning projection 12c is formed by bending the positioning projection 12c.
【００３８】この位置決め凸部１２ｃは、図４に示すよ
うに、押え付け部１２ｂでタブ端子７ｄの曲げしろ部７
ｅをバスバー７のパターン部に上方から押え付ける時
に、バスバー７のパターン部を載置した受け台１３に形
成された位置決め凹部１３ａに嵌入されると、バスバー
７のパターン部に対して、タブ端子７ｄを幅方向を位置
決めするようになる。なお、上記受け台１３に、バスバ
ー７のパターン部を嵌入する凹溝１３ｂを形成すると、
バスバー７のパターン部も幅方向に位置決めできて、バ
スバー７及びタブ端子７ｄの位置決め精度がより向上す
る。As shown in FIG. 4, the positioning projection 12c is formed by a pressing portion 12b and a bending allowance portion 7 of the tab terminal 7d.
When e is pressed onto the pattern portion of the bus bar 7 from above, when it is fitted into the positioning recess 13a formed in the pedestal 13 on which the pattern portion of the bus bar 7 is placed, the tab terminal is attached to the pattern portion of the bus bar 7. 7d is positioned in the width direction. In addition, when the recessed groove 13b into which the pattern portion of the bus bar 7 is fitted is formed in the receiving base 13,
The pattern portion of the bus bar 7 can also be positioned in the width direction, and the positioning accuracy of the bus bar 7 and the tab terminal 7d is further improved.
【００３９】上記衝立て部材１２のマスキング部１２ａ
の裏面側には、タブ端子７ｄの端子部７ｆの一方の側縁
（図では左側縁）７ｇを当接させる当接部１２ｄを折り
曲げて形成すると共に、この当接部１２ｄに対向する爪
状のチャック部１２ｅを当接部１２ｄに対して開閉可能
に支持する。そして、このチャック部１２ｅを端子部７
ｆの他方の側縁（図では右側縁）７ｈに当接させて、上
記当接部１２ｄとチャック部１２ｅの間で端子部７ｆの
両側縁７ｇ，７ｈをチャックするようにする。Masking portion 12a of the partition member 12
On the back side of the tab terminal, a contact portion 12d for contacting one side edge (left side edge in the figure) 7g of the terminal portion 7f of the tab terminal 7d is bent and formed, and a claw shape facing the contact portion 12d is formed. The chuck portion 12e is supported so as to be openable and closable with respect to the contact portion 12d. Then, the chuck portion 12e is connected to the terminal portion 7
The other side edge (right side edge in the figure) 7h of f is brought into contact with each other so that both side edges 7g and 7h of the terminal portion 7f are chucked between the contact portion 12d and the chuck portion 12e.
【００４０】第３実施形態のレーザ溶接方法では、タブ
端子７ｄの端子部７ｆの両側縁７ｇ，７ｈを衝立て部材
１２の当接部１２ｄとチャック部１２ｅとの間でチャッ
クした状態で、押え付け部１２ｂによりタブ端子７ｄの
曲げしろ部７ｅをバスバー７のパターン部に上方から押
え付ける。このとき、押え付け部１２ｂの位置決め凸部
１２ｃがバスバー７のパターン部を載置した受け台１３
の位置決め凹部１３ａに嵌入される。In the laser welding method of the third embodiment, the side edges 7g and 7h of the terminal portion 7f of the tab terminal 7d are clamped between the abutting portion 12d of the partition member 12 and the chuck portion 12e. The bending portion 7e of the tab terminal 7d is pressed against the pattern portion of the bus bar 7 from above by the attaching portion 12b. At this time, the positioning convex portion 12c of the pressing portion 12b has the pedestal 13 on which the pattern portion of the bus bar 7 is placed.
It is fitted in the positioning recess 13a.
【００４１】そして、この状態で、衝立て部材１２の押
え付け部１２の穴１２ｆを利用して、タブ端子７ｄの曲
げしろ部７ｅをバスバー７のパターン部に対して、ほぼ
真上からレーザビームＬＢでレーザ溶接ａする。Then, in this state, using the hole 12f of the pressing portion 12 of the partition member 12, the bending margin portion 7e of the tab terminal 7d is applied to the pattern portion of the bus bar 7 from just above the laser beam. Laser welding a with LB.
【００４２】第３実施形態のレーザ溶接方法であれば、
レーザ溶接時に、タブ端子７ｄの端子部７ｆをマスキン
グする衝立て部材１２のマスキング部１２ａにより、ス
パッタ等がタブ端子７ｄの端子部７ｆに付着するのが確
実に防止できる。According to the laser welding method of the third embodiment,
At the time of laser welding, the masking portion 12a of the partition member 12 that masks the terminal portion 7f of the tab terminal 7d can reliably prevent spatter and the like from adhering to the terminal portion 7f of the tab terminal 7d.
【００４３】また、衝立て部材１２のマスキング部１２
ａの当接部１２ｄとチャック部１２ｅの間で端子部７ｆ
の両側縁７ｇ，７ｈをチャックするから、チャックによ
り端子部７ｆの接触面に傷が付きにくくなる。Further, the masking portion 12 of the partition member 12
The terminal portion 7f is provided between the contact portion 12d of the a and the chuck portion 12e.
Since both side edges 7g and 7h are chucked, the contact surface of the terminal portion 7f is less likely to be scratched by the chuck.
【００４４】さらに、衝立て部材１２の押え付け部１２
ｂで、タブ端子７ｄの曲げしろ部７ｅをバスバー７のパ
ターン部に押え付けることにより、曲げしろ部７ｅの浮
き上がりが矯正されるから、レーザ溶接不良が有効に防
止できる。Further, the pressing portion 12 of the partition member 12
By pressing the bending margin portion 7e of the tab terminal 7d to the pattern portion of the bus bar 7 at b, the rising of the bending margin portion 7e is corrected, so that defective laser welding can be effectively prevented.
【００４５】さらにまた、衝立て部材１２の押え付け部
１２ｂの位置決め凸部１２ｃを、バスバー７のパターン
部を載置した受け台１３の位置決め穴凹部１３ａに嵌入
して、タブ端子７ｄをバスバー７のパターン部に対して
位置決めすると、タブ端子７ｄを位置決めした状態で正
確な位置にレーザ溶接ができる。Furthermore, the positioning projection 12c of the pressing portion 12b of the partition member 12 is fitted into the positioning hole recess 13a of the pedestal 13 on which the pattern portion of the bus bar 7 is mounted, and the tab terminal 7d is attached to the bus bar 7. When the tab terminal 7d is positioned with respect to the pattern portion, laser welding can be performed at an accurate position with the tab terminal 7d positioned.
【００４６】上記レーザ溶接の場合では、抵抗溶接、ア
ーク溶接、超音波溶接等と比較して、レーザビームＬＢ
は非接触であるため簡単な治具のみで確実にタブ端子７
ｄを溶接できると共に、１個所当たりの溶接秒数が短時
間であるため量産性が良好であり、また、レーザビーム
ＬＢはビーム径が細いためタブ端子７ｄを狭ピッチ化で
きて設計の配線自由度が向上するという利点が有る。In the case of the above laser welding, the laser beam LB is compared with resistance welding, arc welding, ultrasonic welding, etc.
Since it is non-contact, the tab terminal 7 can be securely attached using only a simple jig.
Since d can be welded and the number of welding seconds per place is short, mass productivity is good, and because the laser beam LB has a small beam diameter, the tab terminals 7d can be narrowed in pitch, and the wiring can be designed freely. There is an advantage that the degree is improved.
【００４７】また、各種のレーザ溶接の内、ＹＡＧレー
ザ溶接は、非接触であること、熱影響層が少ないこと、
消費電力が少なく装置が小型であること、光ファイバー
が使えるために３次元溶接に容易に使えること、ビーム
を多分割して多点同時溶接が可能であり、したがって、
自動化が容易であるために生産コスト低減が著しい等の
理由から最適である。Among various laser welding, YAG laser welding is non-contact, has a small heat-affected layer,
It consumes less power and the equipment is small, it can be easily used for three-dimensional welding due to the use of optical fibers, and it is possible to perform multipoint simultaneous welding by dividing the beam.
It is most suitable because it is easy to automate and the production cost is significantly reduced.
【００４８】[0048]
【００４９】[0049]
【００５０】[0050]
【００５１】[0051]
【００５２】[0052]
【００５３】[0053]
【００５４】[0054]
【００５５】[0055]
【００５６】[0056]
【図１】 本発明の第１実施形態のレーザ溶接方法であ
り、（ａ）は側面図、（ｂ）は背面図である。FIG. 1 is a laser welding method according to a first embodiment of the present invention, in which (a) is a side view and (b) is a rear view.
【図２】 第２実施形態のレーザ溶接方法であり、
（ａ）は側面図、（ｂ）は平面図である。FIG. 2 shows a laser welding method according to a second embodiment,
(A) is a side view and (b) is a plan view.
【図３】 第３実施形態のレーザ溶接方法の斜視図であ
る。FIG. 3 is a perspective view of a laser welding method according to a third embodiment.
【図４】 第３実施形態のレーザ溶接方法の背面図であ
る。FIG. 4 is a rear view of the laser welding method according to the third embodiment.
【図５】 先行技術のバスバーとタブ端子の溶接状態の
断面図である。FIG. 5 is a sectional view showing a welded state of a prior art bus bar and a tab terminal.
【図６】 従来のバスバー構造の斜視図である。FIG. 6 is a perspective view of a conventional bus bar structure.
【図７】 従来のバスバーの加工及び組み立て要領の分
解斜視図である。FIG. 7 is an exploded perspective view of a conventional busbar processing and assembling procedure.
７ バスバー ７ｄ タブ端子 ７ｅ 曲げしろ部 ７ｆ 端子部 １０ ノズル １１，１２ 衝立て部材 １２ａ マスキング部 １２ｂ 押え付け部 １２ｄ 当接部 １２ｅ チャック部 １３ 受け台 ＬＢ レーザビーム Ａ エアー ａ レーザ溶接部 Ｄ 角度 Ｅ 風速 7 bus bars 7d tab terminal 7e Bending margin 7f terminal part 10 nozzles 11, 12 screen members 12a Masking part 12b Pressing part 12d contact part 12e Chuck part 13 cradle LB laser beam A air a Laser weld D angle E wind speed
フロントページの続き (72)発明者 荒木 優 愛知県名古屋市南区菊住１丁目７番10号 株式会社ハーネス総合技術研究所内 (56)参考文献 特開 平５−174940（ＪＰ，Ａ) 特開 平６−182570（ＪＰ，Ａ) 特開 昭63−188490（ＪＰ，Ａ) 特開 平６−151032（ＪＰ，Ａ) 特開 平７−65878（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01R 43/02 B23K 26/00 310 B23K 26/14 B23K 26/16 H01R 4/58 Continuation of the front page (72) Inventor Yu Araki 1-7-10 Kikuzumi, Minami-ku, Nagoya, Aichi Prefecture Harness Research Institute Co., Ltd. (56) Reference JP-A-5-174940 (JP, A) JP-A 6-182570 (JP, A) JP 63-188490 (JP, A) JP 6-151032 (JP, A) JP 7-65878 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01R 43/02 B23K 26/00 310 B23K 26/14 B23K 26/16 H01R 4/58
Claims (4)
ーン部に別体のタブ端子の曲げしろ部を当てがい、この
曲げしろ部をパターン部にレーザ溶接するレーザ溶接方
法であって、 上記レーザ溶接時に、飛び散って付着したスパッタ等を
保持する素材で成る衝立て部材でタブ端子の端子部をマ
スキングした後に、レーザ溶接部に向けて、所定の角度
から所定の風速で気体を噴射して、レーザ溶接時に発生
するスパッタ等をレーザ溶接部から外方へ吹き飛ばすよ
うにしたことを特徴とする電気接続箱のバスバーのレー
ザ溶接方法。1. A laser welding method in which a bending margin portion of a separate tab terminal is applied to a pattern portion of a bus bar housed in an electric connection box, and the bending margin portion is laser-welded to the pattern portion. Spatters scattered and adhered during welding
Use a partition member made of the material to hold the tab
After skiing, a gas is jetted at a predetermined wind speed from a predetermined angle toward the laser weld, and spatters generated during laser welding are blown outward from the laser weld. Laser welding method for busbar of junction box.
ーン部に別体のタブ端子の曲げしろ部を当てがい、この
曲げしろ部をパターン部にレーザ溶接するレーザ溶接方
法であって、 上記レーザ溶接時に、タブ端子の端子部をマスキングす
る衝立て部材のマスキング部の当接部に、端子部の一方
の側縁を当接させると共に、マスキング部の開閉可能な
チャック部を端子部の他方の側縁に当接させて、上記当
接部とチャック部の間で端子部の両側縁をチャックした
後に、レーザ溶接部に向けて、所定の角度から所定の風
速で気体を噴射して、レーザ溶接時に発生するスパッタ
等をレーザ溶接部から外方へ吹き飛ばすようにしたこと
を特徴とする 電気接続箱のバスバーのレーザ溶接方法。2. A busbar pattern housed in an electrical junction box.
Apply the bend allowance of a separate tab terminal to the
Laser welding method for laser welding the bending margin part to the pattern part
This is the method of masking the terminal part of the tab terminal during the above laser welding.
Of the terminal part to the contact part of the masking part
It is possible to open and close the masking part while contacting the side edges of
Place the chuck part on the other side edge of the terminal part and
Chuck both edges of the terminal between the contact and the chuck.
Later, toward the laser weld, from a predetermined angle to a predetermined wind.
Spatter generated at the time of laser welding by injecting gas at high speed
Blow away the laser welding part from the welded part
A method for laser welding a bus bar of an electrical junction box , characterized by :
ーン部に別体のタブ端子の曲げしろ部を当てがい、この
曲げしろ部をパターン部にレーザ溶接するレーザ溶接方
法であって、 上記レーザ溶接時に、タブ端子の端子部をマスキングす
る衝立て部材のマスキング部に連なって形成された押え
付け部で、タブ端子の曲げしろ部をバスバーのパターン
部に押え付けて、曲げしろ部の浮き上がりを矯正した後
に、レーザ溶接部に向けて、所定の角度から所定の風速
で気体を噴射して、レーザ溶接時に発生するスパッタ等
をレーザ溶接部から外方へ吹き飛ばすようにしたことを
特徴とする 電気接続箱のバスバーのレーザ溶接方法。3. A busbar pattern housed in an electrical junction box.
Apply the bend allowance of a separate tab terminal to the
Laser welding method for laser welding the bending margin part to the pattern part
This is the method of masking the terminal part of the tab terminal during the above laser welding.
A presser foot formed in series with the masking part of the partition member
At the attachment part, connect the bent portion of the tab terminal to the bus bar pattern.
After pressing down on the part and correcting the rising of the bending margin part
To the laser weld, from a predetermined angle to a predetermined wind speed.
Sputtering gas generated by laser welding
Was blown from the laser weld to the outside.
Laser welding method of the bus bar of the electrical connection box, characterized.
された位置決め凸部 を、バスバーのパターン部を載置し
た受け台に形成された位置決め凹部に嵌入して、タブ端
子を位置決めする請求項３に記載の電気接続箱のバスバ
ーのレーザ溶接方法。4. The pressing portion is formed during the laser welding.
Place the bus bar pattern on the positioning protrusion
Tab into the positioning recess formed on the pedestal
The laser welding method for a bus bar of an electrical junction box according to claim 3, wherein the child is positioned .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18437098A JP3425865B2 (en) | 1998-06-30 | 1998-06-30 | Laser welding method for bus bar of electric junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18437098A JP3425865B2 (en) | 1998-06-30 | 1998-06-30 | Laser welding method for bus bar of electric junction box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000021542A JP2000021542A (en) | 2000-01-21 |
| JP3425865B2 true JP3425865B2 (en) | 2003-07-14 |
Family
ID=16152039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18437098A Expired - Fee Related JP3425865B2 (en) | 1998-06-30 | 1998-06-30 | Laser welding method for bus bar of electric junction box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3425865B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4696873B2 (en) * | 2005-11-24 | 2011-06-08 | 株式会社デンソー | Laser welding equipment |
| KR101649079B1 (en) * | 2015-07-21 | 2016-08-18 | 스마트전자 주식회사 | Manufacturing method of current sensing resistor |
| KR101724114B1 (en) * | 2015-10-29 | 2017-04-07 | (주)풍산시스템 | Protection guide laser welding tool and comprising the same |
| JP7443321B2 (en) | 2021-11-30 | 2024-03-05 | プライムプラネットエナジー＆ソリューションズ株式会社 | Secondary batteries and assembled batteries, and their manufacturing methods |
| CN119260190B (en) * | 2024-12-11 | 2025-04-22 | 科圣达(苏州)智能科技有限公司 | Laser type glue removing system for bus bar welding end |
-
1998
- 1998-06-30 JP JP18437098A patent/JP3425865B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000021542A (en) | 2000-01-21 |
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