JP2005118805A - Welded metal wire, and manufacturing method therefor - Google Patents

Welded metal wire, and manufacturing method therefor Download PDF

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JP2005118805A
JP2005118805A JP2003355077A JP2003355077A JP2005118805A JP 2005118805 A JP2005118805 A JP 2005118805A JP 2003355077 A JP2003355077 A JP 2003355077A JP 2003355077 A JP2003355077 A JP 2003355077A JP 2005118805 A JP2005118805 A JP 2005118805A
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metal wire
welded
welding
metal
laser
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JP4888875B2 (en
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Masaji Sasaki
正司 佐々木
Takeshi Tenma
毅 天間
Makoto Orikawa
真 織川
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SANKO DENSHI KOGYO KK
Aomori Prefecture
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Aomori Prefecture
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a welded metal wire manufacturing method by which a welded portion can be sufficiently insulated and electric characteristics such as electric resistance are not impaired when ends of two metal wire parts are welded. <P>SOLUTION: Ends 41T and 42T of a first metal wire part 41 and a second metal wire part 42 are overlapped each other at side surface parts thereof, the first metal wire part 41 of larger sectional area is irradiated with laser beams from a welding laser irradiation apparatus 43 to weld the ends 41T and 42T. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は溶接された金属線およびその製造方法に係り、特に、二の金属線部の端部同士の溶接において、溶接部の絶縁、電気特性、断線等破損防止に優れた効果を得ることのできる、溶接された金属線およびその製造方法に関する。     The present invention relates to a welded metal wire and a method for manufacturing the same, and in particular, in welding of the ends of two metal wire portions, it is possible to obtain an excellent effect in preventing damage such as insulation of the welded portion, electrical characteristics, and disconnection. The present invention relates to a welded metal wire and a manufacturing method thereof.

電子部品から導出される信号線やリード線等の細い金属線を、他の金属線に一体接合する手段として、はんだによる方法や、抵抗溶接による方法等が従来から用いられている。しかし、はんだは有害な鉛を含む合金であり、廃棄後の環境への負荷が大きく、問題がある。また、抵抗溶接による方法では溶接範囲の微小領域化に限界があり、熱の影響が広範囲に及ぶため、近年の高精度接合用途には適さない。かかる状況下、近年は、鉛フリーはんだ、摩擦圧接、超音波接合、レーザ等の高密度エネルギによる溶接等、種々の金属接合技術が進歩し、材料の形状、材質および品質に応じた接合方法を適宜選択できるようになってきている。しかし、鉛フリーはんだは高価格な上、施工温度が従来はんだより高いこと等から作業性が悪く、摩擦圧接、超音波接合は細い線に適用するには、やはり作業性および生産効率などの点で適用しづらい。とりわけ、小型の金属部品を高精度かつ効率的に、加えて完全に溶融接合できるレーザ溶接、電子ビームあるいは細く絞ったアーク溶接は、細い金属線の接合手段として有望な手段であり、有害性の問題もない。   As a means for integrally joining a thin metal wire such as a signal wire or a lead wire derived from an electronic component to another metal wire, a soldering method, a resistance welding method, or the like has been conventionally used. However, solder is an alloy containing harmful lead and has a problem with a large environmental load after disposal. In addition, the resistance welding method has a limit on the miniaturization of the welding range, and the influence of heat extends over a wide range, so that it is not suitable for high-precision joining applications in recent years. Under these circumstances, in recent years, various metal joining technologies such as lead-free solder, friction welding, ultrasonic joining, and welding with high-density energy such as laser have progressed, and joining methods according to the shape, material and quality of materials have been developed. It has become possible to select as appropriate. However, lead-free solder is expensive and has poor workability due to the fact that the construction temperature is higher than that of conventional solder. To apply friction welding and ultrasonic welding to thin wires, workability and production efficiency are still important. It is difficult to apply with. In particular, laser welding, electron beam or finely squeezed arc welding capable of melting and joining small metal parts with high precision and efficiency are promising means for joining thin metal wires, and are harmful. There is no problem.

レーザ溶接は、レーザ光を被溶接物の溶接対象部位に集中させて照射し、レーザ光の有するエネルギにより該溶接対象部位を瞬時に溶融して接合する溶接法である。一方、電子ビーム溶接は、電子ビームの有するエネルギにより該溶接対象部位を溶融して接合する溶接法である。   Laser welding is a welding method in which a laser beam is focused on a portion to be welded and irradiated, and the portion to be welded is instantaneously melted and joined by the energy of the laser beam. On the other hand, electron beam welding is a welding method in which the welding target parts are melted and joined by the energy of the electron beam.

しかしながら、複数の金属素線からなる第一の金属線部と、他の金属線部とをレーザ溶接あるいは電子ビーム溶接する場合は、溶接されない金属線が発生する等の溶接不完全、溶断等が発生しやすい。そのために、溶接強度の不足、断線の危険性、処理ごとの溶接部の品質不均一、電流や抵抗値等電気特性の不安定が生じるという問題があった。かかる問題を解決するために、本願出願人らは先に、溶接対象部位全体に溶接のための熱を良好に伝導せしめて、溶接部の品質および強度を向上させた溶接金属線およびその製造方法を提案した(特許文献1)。   However, in the case of laser welding or electron beam welding of the first metal wire portion made of a plurality of metal wires and other metal wire portions, incomplete welding such as generation of unwelded metal wires, fusing, etc. Likely to happen. For this reason, there are problems such as insufficient welding strength, risk of disconnection, uneven quality of the welded portion for each treatment, and instability of electrical characteristics such as current and resistance. In order to solve such a problem, the applicants of the present application firstly conducted a weld metal wire that efficiently conducts heat for welding to the entire site to be welded to improve the quality and strength of the welded portion, and a method for manufacturing the same. (Patent Document 1).

すなわちその方法とは、第一の金属線部における複数の金属素線を、撚り加工その他の方法によって密に接触した状態に収束させ、第一の金属線部の収束部と他の金属線とを上下方向に重ね合わせ、その重ね合わせ部分に上方からレーザ光または電子ビームを照射して、これらを溶接するというものである。かかる方法により、溶接の熱は、被照射位置から、第一の金属線部を構成するすべての金属素線および他の金属線に速やかに伝導されるため、良好な溶接状態が得られ、所期の目的を達成することができる。   That is, the method is to converge a plurality of metal strands in the first metal wire portion into a closely contacted state by twisting or other methods, and the convergence portion of the first metal wire portion and other metal wires Are overlapped in the vertical direction, and the overlapped portion is irradiated with laser light or an electron beam from above to weld them. With this method, the heat of welding is quickly conducted from the irradiated position to all the metal wires and other metal wires constituting the first metal wire portion, so that a good welding state is obtained. The purpose of the period can be achieved.

特開2003−80334号公報「溶接金属線及びその製造方法」。明細書、発明の詳細な説明、段落0005〜0037、0051〜0054。図面、図1、図2、図7、図8、図10。Japanese Patent Application Laid-Open No. 2003-80334, “Welding metal wire and manufacturing method thereof”. Description, detailed description of invention, paragraphs 0005-0037, 0051-0054. Drawing, FIG. 1, FIG. 2, FIG. 7, FIG.

上述のとおり先の提案では、第一の金属線部と他の金属線部とが互いに溶接され、該第一の金属線部が該他の金属線部との溶接部近傍の非溶接部分で密に接触した状態に収束された複数の金属素線からなる溶接金属線と、その製造方法を開示した。しかし、この提案により具体的に開示された方法には以下のような問題点があった。
(a)これら両金属線部の溶接方法は、これらを上下方向に重ね合わせ、かつそれぞれの溶接対象部位の軸線上の両外側を固定して、上方からレーザ等を照射するものであるため、両金属線部の端部は、溶接処理されぬままの状態で溶接部から突出した状態、あるいはこれに加えて切断端面が露出した状態で、溶接金属線が形成されてしまう。
As described above, in the previous proposal, the first metal wire portion and the other metal wire portion are welded to each other, and the first metal wire portion is a non-welded portion in the vicinity of the welded portion with the other metal wire portion. A weld metal wire composed of a plurality of metal strands converged in close contact with each other and a manufacturing method thereof have been disclosed. However, the method specifically disclosed by this proposal has the following problems.
(A) Since these two metal wire portions are welded in the vertical direction, and both outer sides on the axis of each welding target part are fixed and irradiated with a laser or the like from above, The end portions of both the metal wire portions are formed with the weld metal wires protruding from the welded portion without being subjected to the welding process, or with the cut end faces exposed in addition thereto.

(b)切断端面の露出があると、溶接部およびその周辺の金属部を樹脂コーティングして、たとえばこれをセンサ用途として製造する場合には、露出部がコーティング部からはみ出し、外部に電流が流れやすくなるため必要とされる正確な電気抵抗値を得ることができない。
(c)センサ用途以外の場合であっても、(b)同様に絶縁不良により各種電気特性は良好なものが得られない。
(d)溶接金属線以外の導電性物質との接触による短絡、塵芥等の付着による不具合な熱の発生および電気特性の低下、さらにこれらのいずれかによる製品寿命の短縮化などが発生し得る。
(B) When the cut end face is exposed, the welded part and the surrounding metal part are resin-coated. For example, when manufacturing this as a sensor application, the exposed part protrudes from the coated part, and current flows to the outside. Since it becomes easy, the exact electric resistance value required cannot be obtained.
(C) Even in cases other than sensor applications, various electrical properties cannot be obtained due to poor insulation as in (b).
(D) A short circuit caused by contact with a conductive material other than a weld metal wire, generation of defective heat due to adhesion of dust or the like, deterioration of electrical characteristics, and shortening of the product life due to any of these may occur.

(e)端部の突出は、他の物質との間の引っ掛けを生じやすく、破損、断線が生じやすい。
(f)端部の突出があることにより、取り扱いには相応の慎重さが必要となり、製造工程上、またその他の取り扱い上、煩雑である。
(E) The protrusion at the end is likely to be caught between other substances, and is likely to be broken or disconnected.
(F) Due to the protrusions at the ends, it is necessary to be cautious in handling, which is complicated in the manufacturing process and other handling.

これらの問題点を、図を用いて説明する。
図12は、前記特許文献1に開示された方法を用いて、センサに接続されている金属単線と、別の金属線束とを溶接してなる溶接金属線の構成を示す説明図である。図において該溶接金属線は、金属線束91A、91Bに、センサ98に接続されている金属単線92A、92Bがそれぞれ溶接されて、溶接部WdA、WdBが形成されている。この方法では、金属線束91A等と金属単線92A等を上下に重ね合わせ、それぞれの端部91TA、92TA等から所要距離離れている重ね合わせ部分に、上方からレーザ等が照射される。したがって、それぞれの端部91TA、92TA等は溶接されずに残る、すなわち溶接部WdA、WdBから露出した形態が、必然的に形成されてしまい、上述した各問題が発生することとなる。
These problems will be described with reference to the drawings.
FIG. 12 is an explanatory view showing a configuration of a weld metal wire formed by welding a metal single wire connected to a sensor and another metal wire bundle using the method disclosed in Patent Document 1. In the figure, the weld metal wires are welded to metal wire bundles 91A and 91B by metal single wires 92A and 92B connected to the sensor 98 to form welds WdA and WdB. In this method, a bundle of metal wires 91A and the like and a single metal wire 92A and the like are vertically overlapped, and a laser beam or the like is irradiated from above on the overlapping portions that are separated from the respective end portions 91TA and 92TA by a required distance. Therefore, the respective end portions 91TA, 92TA and the like remain without being welded, that is, the form exposed from the welded portions WdA, WdB is inevitably formed, and the above-described problems occur.

本発明の課題はこれら従来技術の課題を解決し、二の金属線部の端部同士の溶接において、溶接部の絶縁を充分に得ることができ、電気抵抗値等の電気特性を損なうことがなく、断線等破損防止に優れ、保守性および取り扱い性にも優れた、溶接された金属線およびその製造方法を提供することである。   The object of the present invention is to solve these problems of the prior art, and in the welding of the ends of the two metal wire parts, the insulation of the welded part can be sufficiently obtained, and the electrical characteristics such as the electric resistance value can be impaired. It is another object of the present invention to provide a welded metal wire that is excellent in preventing breakage such as disconnection, and is excellent in maintainability and handleability, and a method for manufacturing the same.

本願発明者は上記課題を解決するために鋭意検討し、二の金属線部の配置方法およびこれらに対するレーザ等の照射方向を規定することにより上記課題を解決し得ることを見出し、本発明に至った。すなわち、本願において特許請求もしくは開示される発明は、以下のとおりである。
(1) 一または複数の金属素線からなる第一の金属線部と、一または複数の金属素線からなる第二の金属線部と、それらの端部同士が溶接された状態に形成された溶接部と、からなる溶接された金属線であって、両金属線部の各端部がいずれも該溶接部内に含まれてあることを特徴とする、溶接された金属線。
(2) 前記第一の金属線部の溶接部と非溶接部との境界部における軸線方向略直交断面と、前記第二の金属線部の溶接部と非溶接部との境界部における軸線方向略直交断面とが、相互にずれているか、または略外接していることを特徴とする、(1)に記載の溶接された金属線。
(3) 一または複数の金属素線からなる第一の金属線部と、一または複数の金属素線からなる第二の金属線部と、それらの溶接端部同士が溶接されて形成された溶接部と、からなる、溶接された金属線であって、該溶接部には、該溶接端部がその末端側において溶接処理を受けずに残った場合に形成され得る、露出端部を含む余剰の金属線からなる突出部がないことを特徴とする、溶接された金属線。
(4) 前記二の金属線部は、少なくともその一方が、複数の金属素線が密着した状態の金属線束であることを特徴とする、(1)ないし(3)のいずれかに記載の溶接された金属線。
The inventor of the present application has intensively studied to solve the above problems, and found that the above problems can be solved by defining the arrangement method of the two metal wire portions and the irradiation direction of the laser or the like with respect to these methods, leading to the present invention. It was. That is, the invention claimed or disclosed in the present application is as follows.
(1) A first metal wire portion made of one or more metal strands, a second metal wire portion made of one or more metal strands, and the end portions thereof are welded to each other. A welded metal wire comprising: a welded metal wire, wherein both end portions of both metal wire portions are included in the welded portion.
(2) A substantially orthogonal cross section in the axial direction at the boundary between the welded portion and the non-welded portion of the first metal wire portion, and the axial direction at the boundary between the welded portion and the non-welded portion of the second metal wire portion The welded metal wire according to (1), characterized in that the substantially orthogonal cross sections deviate from each other or are substantially circumscribed.
(3) The first metal wire portion made of one or more metal wires, the second metal wire portion made of one or more metal wires, and the welded end portions thereof were welded to each other. A welded metal wire comprising an exposed end that can be formed when the weld end remains unwelded on the distal side thereof A welded metal wire, characterized in that there are no protrusions made of excess metal wire.
(4) The welding according to any one of (1) to (3), wherein at least one of the two metal wire portions is a metal wire bundle in a state where a plurality of metal wires are in close contact with each other. Metal wire.

(5) 一または複数の金属素線からなる第一の金属線部と、一または複数の金属素線からなる第二の金属線部の端部同士を重ね合わせ、これにレーザ溶接を施すことによって、これら被溶接物が溶接されてなる溶接済み金属線を製造する方法であって、該両端部をその側面部同士が接するように並置させてなる側面方向上の重ね合わせ領域を形成し、該重ね合わせ領域が含まれる平面の外部から該重ね合わせ領域に対してレーザを照射して該両端部を溶接することにより溶接済み金属線を得ることを特徴とする、溶接された金属線の製造方法。
(6) 前記第一の金属線部は複数の金属素線が密着した状態の金属線束であり、前記第二の金属線部は他の金属単線もしくは金属線束であり、該第一の金属線部と第二の金属線部の端部同士を重ね合わせ、これにレーザ溶接を施すことによって、これら被溶接物が溶接されてなる溶接済み金属線を製造する方法であって、該端部同士の重ね合わせはその側面部を接触させて行う重ね合わせであり、各被溶接物の軸線方向略直交断面中心を結ぶ線分とレーザの照射方向とのなす角度が10°ないし170°の範囲内であることを特徴とする、溶接された金属線の製造方法。
(6−2) 前記各被溶接物の軸線方向略直交断面中心を結ぶ線分とレーザの照射方向とのなす角度が45°ないし135°の範囲内であることを特徴とする、 (6)に記載の溶接された金属線の製造方法。
(7) 前記レーザ溶接を施すことによって、前記両金属線部の端面が内部に含まれる溶接部を形成することを特徴とする、(5)または(6)に記載の溶接された金属線の製造方法。
(5) The first metal wire portion made of one or more metal strands and the end portions of the second metal wire portion made of one or more metal strands are overlapped with each other, and laser welding is performed thereon. Is a method of manufacturing a welded metal wire formed by welding these workpieces, forming an overlapping region in the side direction in which both side portions are juxtaposed so that the side portions are in contact with each other, Production of a welded metal wire, characterized in that a welded metal wire is obtained by irradiating a laser to the overlap region from outside the plane including the overlap region and welding the both ends. Method.
(6) The first metal wire portion is a metal wire bundle in a state where a plurality of metal strands are in close contact, and the second metal wire portion is another metal single wire or a metal wire bundle, and the first metal wire portion Is a method of manufacturing a welded metal wire in which the workpieces are welded by superimposing the end portions of the portion and the second metal wire portion and performing laser welding on the end portions, Is a superposition performed by bringing the side surface portions into contact with each other, and the angle between the line segment connecting the centers of the substantially orthogonal cross sections of the workpieces and the laser irradiation direction is within a range of 10 ° to 170 °. A method for producing a welded metal wire, characterized in that:
(6-2) An angle formed by a line segment that connects substantially orthogonal cross-sectional centers in the axial direction of the respective workpieces and a laser irradiation direction is in a range of 45 ° to 135 °, (6) A method for producing a welded metal wire according to claim 1.
(7) The welded metal wire according to (5) or (6), wherein the laser welding is performed to form a welded portion in which end surfaces of both the metal wire portions are included. Production method.

(8) レーザの照射は、前記二の被溶接物のうち断面積の大きい方に対して行われることを特徴とする、(5)ないし(7)のいずれかに記載の溶接された金属線の製造方法。
(9) 照射径の中心が、両被溶接物の各軸上を含む軸間領域内のいずこかに命中するようにレーザの照射が行われることを特徴とする、(5)ないし(7)のいずれかに記載の溶接された金属線の製造方法。
(10) 溶接方法は、レーザに替えて電子ビームあるいはアークを用いるものであることを特徴とする、(5)ないし(9)のいずれかに記載の溶接された金属線の製造方法。
(8) The welded metal wire according to any one of (5) to (7), wherein the laser irradiation is performed on the larger one of the two workpieces to be welded. Manufacturing method.
(9) The laser irradiation is performed so that the center of the irradiation diameter hits somewhere in the inter-axis region including on each axis of both workpieces, (5) to ( 7) The method for producing a welded metal wire according to any one of 7).
(10) The method for manufacturing a welded metal wire according to any one of (5) to (9), wherein the welding method uses an electron beam or an arc instead of a laser.

本発明の溶接された金属線およびその製造方法は上述のように構成されるため、二の金属線部の端部同士の溶接において、溶接部の絶縁を充分に得ることができ、電気抵抗値等の電気特性を高度に保つことができる。さらに断線等の破損を効果的に防止することができる。加えて、保守性および取り扱い性の面でもこれらを向上することができる。   Since the welded metal wire and the manufacturing method thereof according to the present invention are configured as described above, it is possible to sufficiently obtain insulation of the welded portion in the welding between the ends of the two metal wire portions, and the electric resistance value. The electrical characteristics such as can be maintained at a high level. Further, breakage such as disconnection can be effectively prevented. In addition, these can be improved in terms of maintainability and handling.

以下本発明について、適宜図を用いながら、さらに詳細に説明する。以下、「溶接された金属線」を適宜「溶接金属線」ともいう。
図1(a)、図1(b)は、本発明の溶接された金属線の基本構成を示す説明図である。このうち、図1(a)は溶接された金属線の要部構成を示す平面図、また、図1(b)は図1(a)に示す構成から看取される溶接前の両金属線部の配置状態を示す平面図である。これらの図において該溶接された金属線は、一または複数の金属素線からなる第一の金属線部1と、一または複数の金属素線からなる第二の金属線部2と、それらの端部1T、2T同士が溶接された状態に形成された溶接部Wdと、からなるものであって、両金属線部の各端部1T、2Tがいずれも、該溶接部Wd内に含まれてあることを、主たる構成とする(上記(1)の発明)。
Hereinafter, the present invention will be described in more detail using appropriate drawings. Hereinafter, “welded metal wire” is also referred to as “welded metal wire” as appropriate.
FIG. 1A and FIG. 1B are explanatory views showing a basic configuration of a welded metal wire of the present invention. Among these, FIG. 1A is a plan view showing a main part configuration of a welded metal wire, and FIG. 1B is a double metal wire before welding observed from the configuration shown in FIG. It is a top view which shows the arrangement | positioning state of a part. In these drawings, the welded metal wire includes a first metal wire portion 1 made of one or more metal wires, a second metal wire portion 2 made of one or more metal wires, and their The end portions 1T and 2T are welded to each other, and the end portions 1T and 2T of both metal wire portions are both included in the welded portion Wd. This is the main configuration (the invention of (1) above).

ここで金属線部とは、金属の単線のみのもの、同一種類の金属の単線(金属素線)が複数集合してなるもの、双方を含む概念である。前者を適宜、金属単線、後者を適宜金属線束ともいう。後述例示するようにこれら金属線部を構成する金属の種類としては、Fe合金、Cuが挙げられるが、本発明はかかる金属の種類によって限定されるものではない。すなわち本発明は、溶接されるべき二の金属線部に用いられる金属であれば、あらゆるものがその適用対象となる。   Here, the metal wire portion is a concept including both a single metal wire, a plurality of the same kind of single metal wires (metal strands), and both. The former is appropriately referred to as a metal single wire, and the latter is also referred to as a metal wire bundle as appropriate. As will be described later, examples of the metal constituting these metal wire portions include Fe alloy and Cu, but the present invention is not limited by the type of metal. That is, the present invention is applicable to any metal as long as it is used for the second metal wire portion to be welded.

また、端部とは、金属線部の端面およびそこからある程度の長さの部分を含むが、本質的にその長さにより規定されるのではなく、要するに接合相手となる金属線部との間で、上述した露出部分を残さないような溶接に供するのに充分な部位であればよい。溶接方法例としては、後述例示するようにレーザ、電子ビーム、アークが挙げられるが、本発明はかかる具体的溶接方法の如何により限定され
るものではない。たとえば、超音波接合、拡散接合、摩擦圧接、電気抵抗加熱融着、圧着等の接合方法においても適用することができる。
The end portion includes the end face of the metal wire portion and a portion of a certain length from the end surface, but is not essentially defined by the length, in short, between the metal wire portion to be joined. Thus, it suffices if the portion is sufficient to be subjected to welding so as not to leave the exposed portion described above. Examples of welding methods include lasers, electron beams, and arcs as will be described later, but the present invention is not limited by such specific welding methods. For example, the present invention can also be applied to bonding methods such as ultrasonic bonding, diffusion bonding, friction welding, electric resistance heating fusion, and pressure bonding.

図において本発明の溶接金属線はかかる構成をとるため、つまり第一の金属線部1と第二の金属線部2は、その端部1T、2Tがいずれも溶接部Wd内に含まれ、両金属線部1、2の端部が該溶接部Wdから突出せず、切断端面が露出しない状態となっている。これにより、溶接部Wdおよびその周辺の金属部を樹脂コーティングしてたとえばこれをセンサ用途として用いる場合であっても、露出部がコーティング部からはみ出すということがなく、したがって外部への電流漏洩やそれによる電気抵抗値精度の低下といった問題が引き起こされることがない。またセンサ用途以外の場合であっても、絶縁が充分に得られるため、各種電気特性として良好なものを得ることができる。   In the figure, the weld metal wire of the present invention has such a configuration, that is, the first metal wire portion 1 and the second metal wire portion 2 have both end portions 1T and 2T included in the weld portion Wd, The end portions of both metal wire portions 1 and 2 do not protrude from the welded portion Wd, and the cut end surfaces are not exposed. As a result, even if the welded portion Wd and the surrounding metal portion are coated with a resin and used, for example, as a sensor, the exposed portion does not protrude from the coated portion. The problem of a decrease in electrical resistance value accuracy due to is not caused. Even in cases other than sensor applications, sufficient insulation can be obtained, so that various electrical characteristics can be obtained.

さらに、本発明溶接金属線の構成によれば、他の導電性物質との接触による短絡、塵芥等の付着による不具合な熱の発生および電気特性の低下、さらにこれらによる製品寿命の短縮化を、防止することができる。加えて、両金属線部1、2の端部1T、2Tの突出がないため、他の物質との間の引っ掛けを生じることがなく、従来技術と比べて破損、断線が発生しにくく、製造工程その他の取り扱い上の煩雑さを解消することができる。   Furthermore, according to the configuration of the weld metal wire of the present invention, short circuit due to contact with other conductive substances, generation of trouble heat due to adhesion of dust, etc. and reduction of electrical characteristics, and further shortening of product life due to these, Can be prevented. In addition, since there is no protrusion of the end portions 1T and 2T of both metal wire portions 1 and 2, there is no occurrence of hooking between other materials, and damage and disconnection are less likely to occur than in the prior art. The complexity of the process and other handling can be eliminated.

図2(a)、(b)は、本発明の溶接された金属線の要部側面構成を示す側面図である。このうち図2(a)は、本発明の溶接された金属線の要部側面構成を示す図であり、図1(a)中のIIa−IIa’矢視切断面を含む側面図である。ハッチングの付されているCs1は第一の金属線部の溶接部と非溶接部との境界部における軸線方向略直交断面であり、非溶接部である。Wdは溶接部であり、その側面部分が図示されている。また図2(b)は、本発明の溶接された金属線の要部側面構成を示す図であり、図1(a)中のIIb−IIb’ 矢視切断面を含む側面図である。ハッチングの付されているCs2は第二の金属線部の溶接部と非溶接部との境界部における軸線方向略直交断面であり、非溶接部である。Wdは溶接部であり、その側面部分が図示されている。
これらの図において本溶接金属線は、図1(a)、(b)で説明した構成に加えて、前記第一の金属線部1の溶接部Wdと非溶接部との境界部における軸線方向略直交断面Cs1と、前記第二の金属線部2の溶接部Wdと非溶接部との境界部における軸線方向略直交断面Cs2とが、相互にずれているか、または略外接している構成をとることを特徴とする(上記(2)の発明)。
2 (a) and 2 (b) are side views showing the side configuration of the main part of the welded metal wire of the present invention. Among these, Fig.2 (a) is a figure which shows the principal part side surface structure of the welded metal wire of this invention, and is a side view including the IIa-IIa 'arrow cut surface in FIG.1 (a). The hatched Cs1 is a substantially orthogonal cross section in the axial direction at the boundary between the welded portion and the non-welded portion of the first metal wire portion, and is a non-welded portion. Wd is a welded portion, and its side surface portion is illustrated. Moreover, FIG.2 (b) is a figure which shows the principal part side surface structure of the welded metal wire of this invention, and is a side view including the IIb-IIb 'arrow cut surface in FIG.1 (a). The hatched Cs2 is a substantially orthogonal cross section in the axial direction at the boundary between the welded portion and the non-welded portion of the second metal wire portion, and is a non-welded portion. Wd is a welded portion, and its side surface portion is illustrated.
In these drawings, the present weld metal wire is in the axial direction at the boundary between the welded portion Wd and the non-welded portion of the first metal wire portion 1 in addition to the configuration described in FIGS. 1 (a) and 1 (b). A configuration in which the substantially orthogonal cross section Cs1 and the substantially orthogonal cross section Cs2 in the axial direction at the boundary between the welded portion Wd and the non-welded portion of the second metal wire portion 2 are offset from each other or are substantially circumscribed. (Invention (2) above).

ここで、溶接部と非溶接部との境界部とは、両者境界に近接した非溶接部中の部位をいう。また、「断面が相互にずれている」とは、第一の金属線部1と第二の金属線部2の断面形状が、たとえば突き合わせ溶接のように一方が他方の形状の内部に完全に重なった状態となっているのではなく、多少なりとも該内部からはみ出ている部分があることをいい、これには、両断面形状の重なり部分がなく、ちょうど外接している場合を含む。   Here, the boundary between the welded portion and the non-welded portion refers to a portion in the non-welded portion that is close to the boundary between the two. Further, “the cross sections are shifted from each other” means that the cross-sectional shapes of the first metal wire portion 1 and the second metal wire portion 2 are completely inside one other shape, for example, as in butt welding. It is said that there is a part protruding from the inside to some extent rather than being overlapped, and this includes the case where there is no overlapping part of both cross-sectional shapes and just circumscribed.

図において本溶接金属線はかかる構成をとるため、少なくとも溶接部Wdにおいて、または溶接部Wdとその近傍において、両金属線部はその軸線が非同軸上となるように配置されたものであるといえる。特に両断面が略外接している構成の場合は、少なくとも溶接部Wdにおいて、または溶接部Wdとその近傍において、両金属線部はその側面が接触するように配置されて溶接されたものであるといえる。   In the drawing, the present weld metal wire has such a configuration, and therefore, at least in the welded portion Wd or in the vicinity of the welded portion Wd, both metal wire portions are arranged so that the axis thereof is non-coaxial. I can say that. Particularly, in the case of a configuration in which both cross sections are substantially circumscribed, at least in the welded portion Wd or in the vicinity of the welded portion Wd, both metal wire portions are arranged and welded so that the side surfaces thereof are in contact with each other. It can be said.

図1(a)に示されるように本溶接金属線は、一または複数の金属素線からなる第一の金属線部1と、一または複数の金属素線からなる第二の金属線部2と、それらの溶接端部(1T、2T)同士が溶接されて形成された溶接部Wdと、からなるものであって、該溶接部Wdには、該溶接端部(1T、2T)がその末端側において溶接処理を受けずに残った場合に形成され得る、露出端部を含む余剰の金属線からなる突出部がないことを、特徴的な構成とする(上記(3)の発明)。つまり、図12で示した露出端部(91TA、91TB、92TA、92TB)のような突出部の形成がなく、上述した各作用効果を得ることができる。   As shown in FIG. 1A, the present weld metal wire includes a first metal wire portion 1 made of one or more metal wires and a second metal wire portion 2 made of one or more metal wires. And a welded portion Wd formed by welding the welded end portions (1T, 2T) to each other, and the welded end portion (1T, 2T) includes the welded end portion (1T, 2T). A characteristic configuration is that there is no projecting portion made of an excess metal wire including an exposed end portion that can be formed when the end portion remains without being subjected to the welding process (the invention of (3) above). That is, there is no formation of protrusions such as the exposed end portions (91TA, 91TB, 92TA, and 92TB) shown in FIG. 12, and the above-described functions and effects can be obtained.

図3は、本発明溶接金属線にかかる金属線部の構成例を示す要部斜視図である。図において、前記二の金属線部のうち少なくともその一方31として、複数の金属素線311、312等が密着した状態の金属線束を用いることができる(上記(4)の発明)。すなわち、本溶接金属線を構成する二の金属線部は、そのいずれか一方が該金属線束31であっても、またその両方が該金属線束31であってもよい。両方が金属線束31である場合、これらを構成する金属素線311等の種類が異なるものであっても、また同一のものであってもよい。該金属線束311等の密着されている状態は、前記特許文献1(特開2003−80334)に開示されているように、撚り加工、編み加工、超音波振動・アーク・レーザ・電子ビーム・電気抵抗発熱・圧着・加熱溶融による接着もしくは融着またはその他適宜の方法によって該複数の金属素線311等を収束させることにより、形成することができる。   FIG. 3 is a perspective view of a main part showing a configuration example of a metal wire portion according to the weld metal wire of the present invention. In the figure, as at least one of the two metal wire portions 31, a metal wire bundle in which a plurality of metal strands 311 and 312 are in close contact with each other can be used (invention (4) above). That is, one of the two metal wire portions constituting the weld metal wire may be the metal wire bundle 31, or both may be the metal wire bundle 31. When both are the metal wire bundles 31, the types of the metal strands 311 constituting these may be different or the same. The metal wire bundle 311 and the like are in close contact with each other as disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2003-80334), such as twisting, knitting, ultrasonic vibration, arc, laser, electron beam, and electricity. It can be formed by converging the plurality of metal strands 311 and the like by resistance heating, pressure bonding, heat fusion, or other appropriate methods.

図では、7本の金属素線311、312、313、314、315、316および317が、断面形状が略円形状に撚られて密着している状態が例示されているが、用いる金属素線の数、密着により形成される断面の形状(つまり、金属素線の集合形態)、密着方法は、図の例に限定されない。すなわち、金属素線の数は、2本、3本等のように7本より少なくても、あるいは9本、12本、19本のように多くてもよい。また、断面形状は略楕円形状でもよい。また、密着は上記特許文献1開示の各方法のいずれかを用いて得られるものであっても、あるいはその他の公知の方法を用いて得られるものであってもよい。   In the figure, the seven metal strands 311, 312, 313, 314, 315, 316 and 317 are illustrated in a state where the cross-sectional shape is twisted into a substantially circular shape and is in close contact, but the metal strand used The shape of the cross section formed by the close contact (that is, the aggregate form of the metal strands) and the close contact method are not limited to the examples in the figure. That is, the number of metal strands may be less than 7, such as 2, 3, etc., or may be as large as 9, 12, 19, etc. The cross-sectional shape may be a substantially elliptical shape. Further, the close contact may be obtained using any of the methods disclosed in Patent Document 1 or may be obtained using other known methods.

たとえばセンサに結合している金属単線を、リード線と接合させるような場合は、溶接金属線に係る金属線部は、金属単線と金属線束の組み合わせである。   For example, when a metal single wire coupled to a sensor is joined to a lead wire, the metal wire portion related to the weld metal wire is a combination of a metal single wire and a metal wire bundle.

図4(a)〜(c)は、本発明の溶接された金属線の製造方法を示す説明図であり、このうち図4(a)は該方法前段を示す平面図、図4(b)は側面図、図4(c)は該方法使用後の状態を示す平面図である。これらの図において本製造方法では、一または複数の金属素線からなる第一の金属線部41と、一または複数の金属素線からなる第二の金属線部42の端部41T、42T同士を重ね合わせ、これにレーザ溶接を施すことによって、これら被溶接物41、42が溶接されてなる溶接済み金属線40を製造するが、特に該両端部41T、42Tをその側面部同士が接するように並置させて、それによる側面方向上の重ね合わせ領域Sを形成し(図4(a))、該重ね合わせ領域Sが含まれる平面Pの外部から該重ね合わせ領域Sに対して、溶接用レーザ出射装置43等を用いてレーザを照射して該両端部41T、42Tを溶接する(図4(b))過程を経ることにより、該両金属線部41、42が溶接されて溶接部Wd4の形成された溶接済み金属線40が得られる(図4(c)、上記(5)の発明)。   4 (a) to 4 (c) are explanatory views showing a method for producing a welded metal wire according to the present invention, in which FIG. 4 (a) is a plan view showing the previous stage of the method, and FIG. 4 (b). Is a side view, and FIG. 4C is a plan view showing a state after using the method. In these drawings, in the present manufacturing method, the end portions 41T and 42T of the first metal wire portion 41 made of one or more metal strands and the second metal wire portion 42 made of one or more metal strands. The welded metal wire 40 is manufactured by welding the workpieces 41 and 42 by superimposing them and applying laser welding thereto. In particular, the side portions of the end portions 41T and 42T are in contact with each other. To form the overlapping region S in the side surface direction (FIG. 4A), and for welding the overlapping region S from the outside of the plane P including the overlapping region S. The two metal wire portions 41 and 42 are welded to each other through a process of welding the both end portions 41T and 42T by irradiating a laser using a laser emitting device 43 or the like (FIG. 4B), and a welded portion Wd4. Formed welded Genus line 40 is obtained (FIG. 4 (c), the invention described in (5)).

このようにして製造された本溶接金属線40は、図1(a)(b)、図2(a)(b)を用いて説明した本発明溶接金属線の構成および作用効果を備えたものとなる。図示された例における第一の金属線部41は、7本の金属素線411、412、413、414、415、416および417が密着された金属線束の構成をとっているが、金属線部の構成がかかるものに限定されないことはいうまでもない。   The main welding metal wire 40 manufactured in this way is provided with the configuration and operational effects of the present welding metal wire described with reference to FIGS. 1 (a) and 1 (b) and FIGS. 2 (a) and 2 (b). It becomes. The first metal wire portion 41 in the illustrated example has a configuration of a metal wire bundle in which seven metal wires 411, 412, 413, 414, 415, 416 and 417 are in close contact with each other. Needless to say, the configuration is not limited to this.

図4(b)において、43は溶接用レーザ出射装置であるが、後述するようにレーザの代わりに電子ビームあるいはアークを用いて溶接する場合には、それぞれ溶接用電子ビーム出射装置、溶接用アーク出射装置が用いられる。   In FIG. 4B, reference numeral 43 denotes a welding laser emitting device. However, as will be described later, when welding is performed using an electron beam or an arc instead of a laser, the welding electron beam emitting device and the welding arc are respectively used. An emission device is used.

図5(a)は、本溶接金属線製造方法の別の構成について断面方向から説明する説明図である。また図5(b)は、レーザ照射角度設定の効果を説明する説明図である。これらの図において本方法は、前記第一の金属線部51は複数の金属素線511、512等が密着した状態の金属線束であり、前記第二の金属線部52は他の金属単線もしくは金属線束であり、該第一の金属線部51と第二の金属線部52の端部51T、52T同士を重ね合わせ、これにレーザ溶接を施すことによって、これら被溶接物51、52が溶接されてなる溶接済み金属線を製造するものであるが、該端部51T、52T同士の重ね合わせはその側面部を接触させて行う重ね合わせであり、各被溶接物51、52の軸線方向略直交断面中心C1、C2を結ぶ線分C1C2と、レーザLの照射方向とのなす角度θが10°ないし170°の範囲内となるようにレーザLを照射することを特徴とする(上記(6)の発明)。図示された例における金属線束51は、7本の金属素線511、512、513、514、515、516および517が密着された構成であるが、金属線束の構成がかかるものに限定されないことは、上述の図3を用いた説明と同様である。   Fig.5 (a) is explanatory drawing explaining another structure of this welding metal wire manufacturing method from a cross-sectional direction. FIG. 5B is an explanatory diagram for explaining the effect of setting the laser irradiation angle. In these drawings, the present method is such that the first metal wire portion 51 is a metal wire bundle in which a plurality of metal strands 511, 512, etc. are in close contact, and the second metal wire portion 52 is another metal single wire or It is a metal wire bundle, and the workpieces 51 and 52 are welded by overlapping the end portions 51T and 52T of the first metal wire portion 51 and the second metal wire portion 52 and performing laser welding on them. However, the end portions 51T and 52T are overlapped by bringing their side portions into contact with each other, and the axial direction of each of the workpieces 51 and 52 is substantially the same. The laser L is irradiated so that the angle θ formed by the line segment C1C2 connecting the orthogonal cross-sectional centers C1 and C2 and the irradiation direction of the laser L is within a range of 10 ° to 170 ° ((6 ) Invention). The metal wire bundle 51 in the illustrated example has a configuration in which seven metal strands 511, 512, 513, 514, 515, 516 and 517 are in close contact, but the configuration of the metal wire bundle is not limited to this. This is the same as described with reference to FIG.

図5(a)、(b)においてレーザLの照射方法を上述のようにすることについて、さらに説明する。該断面中心を結ぶ線分C1C2とレーザL照射方向のなす角度が10°未満または170°を超える場合、レーザLは極めて浅い角度から照射されることとなり、そのために両金属線部51、52が接触している部位CTとは反対側の面に当たる確率が高くなる。これは、両金属線部51、52の断面形状がいずれも略円形状または略楕円形状となっており、つまり中央部が盛り上がった立体形状を有し、あまりに浅い角度のレーザL照射の場合は、該接触部位CTへの照射に対する障壁となり得るためである。そうすると、両金属線部51、52の該接触部位CTにおける熱伝達効率が悪くなり、溶接効率の低下および作業性の低下を招くこととなる(なお後記実施例における比較例5、6参照)。   The method of irradiating the laser L as described above in FIGS. 5A and 5B will be further described. When the angle between the line segment C1C2 connecting the center of the cross section and the laser L irradiation direction is less than 10 ° or more than 170 °, the laser L is irradiated from an extremely shallow angle. The probability of hitting the surface on the side opposite to the part CT in contact with the contact CT increases. This is because the cross-sectional shapes of both metal line portions 51 and 52 are both substantially circular or oval, that is, a solid shape having a raised central portion, and laser L irradiation at a too shallow angle. This is because it can be a barrier against irradiation of the contact site CT. If it does so, the heat transfer efficiency in this contact part CT of both the metal wire parts 51 and 52 will worsen, and it will cause the fall of welding efficiency and workability | operativity (refer the comparative examples 5 and 6 in a postscript Example).

これに対し、前記角度を10°以上170°以下の範囲内に設定することにより、レーザLの照射における過度の該角度の浅さは解消または軽減され、そのためにレーザLが、両金属線部51、52が前記接触部位CTとは反対側の面に当たる確率は低くなる。つまり、該接触部位CTへの照射に対する障害が解消または軽減される。そうすると、両金属線部51、52の該接触部位CTにおける熱伝達効率は良くなり、溶接効率の低下および作業性の低下が解消または軽減される。   On the other hand, by setting the angle within the range of 10 ° to 170 °, the excessive shallowness of the angle in the irradiation of the laser L is eliminated or reduced. The probability that 51 and 52 hit the surface on the opposite side to the contact part CT is low. That is, the obstacle to the irradiation to the contact part CT is eliminated or reduced. If it does so, the heat transfer efficiency in this contact part CT of both the metal wire parts 51 and 52 will become good, and the fall of welding efficiency and the fall of workability | operativity will be eliminated or reduced.

図5(b)において示すように、前記各被溶接物の軸線方向略直交断面中心を結ぶ線分C1C2とレーザLの照射方向とのなす角度は、上述記載に関わらず、45°以上135°以内の範囲内とすることもできる(上記(6−2)の発明)。かかる角度範囲とすることによって、レーザLの照射における過度の該角度の浅さは一層解消され、そのためにレーザLが、両金属線部51、52が前記接触部位CTとは反対側の面に当たる確率は実質的に0となる。つまり、該接触部位CTへの照射に対する障害が解消される。そうすると、両金属線部51、52の該接触部位CTにおける熱伝達効率は良くなり、溶接効率の低下および作業性の低下が一層解消される。   As shown in FIG. 5B, the angle formed between the line segment C1C2 connecting the centers of the substantially orthogonal cross sections in the axial direction of the respective workpieces and the irradiation direction of the laser L is 45 ° or more and 135 ° regardless of the above description. (Invention (6-2) above). By adopting such an angle range, the excessive shallowness of the angle in the irradiation of the laser L is further eliminated, so that the laser L hits the surface opposite to the contact part CT with both the metal line portions 51 and 52. The probability is substantially zero. That is, the obstacle to the irradiation to the contact part CT is eliminated. If it does so, the heat transfer efficiency in this contact part CT of both the metal wire parts 51 and 52 will become good, and the fall of welding efficiency and the fall of workability | operativity will be further eliminated.

以上説明した本発明の溶接金属線製造方法によれば、前記レーザ溶接を施す過程によって、前記両金属線部の端面が内部に含まれる溶接部が形成される(上記(7)の発明)。つまり、該レーザ溶接の過程は該両金属線部の端面が溶接部内部に含まれて露出端部を生じないようになされる。   According to the weld metal wire manufacturing method of the present invention described above, a welded portion in which end surfaces of both metal wire portions are included is formed by the laser welding process (the invention of (7) above). That is, the laser welding process is performed so that the end faces of the two metal wire portions are included in the welded portion and no exposed end portion is generated.

図5(a)、(b)において、Lはレーザの照射であるが、後述するようにレーザの代わりに電子ビームあるいはアークを用いて溶接する場合の説明については、それぞれ電子ビーム照射、アーク照射と読み替えることにより、これらの図を用いることができる。   5 (a) and 5 (b), L represents laser irradiation. However, as will be described later, the description of the case of welding using an electron beam or an arc instead of a laser will be described with respect to electron beam irradiation and arc irradiation, respectively. These figures can be used by replacing

図6は、本発明溶接金属線製造方法におけるレーザ照射方法を断面方向から説明した説明図である。図において本方法では、溶接用レーザ出射装置63等によるレーザの照射を、前記二の被溶接物61、62のうち断面積の大きい方に対して行うこととすることができる(上記(8)の発明)。図の例では金属線部61の方が断面積が大きく、レーザは該金属線部61に対して照射されるように、該溶接用レーザ出射装置の角度および位置が設定された状態を示している。   FIG. 6 is an explanatory view explaining the laser irradiation method in the weld metal wire manufacturing method of the present invention from the cross-sectional direction. In the figure, in this method, laser irradiation by the welding laser emitting device 63 or the like can be performed on the larger one of the cross-sectional areas of the two workpieces 61 and 62 ((8) above). Invention). In the example of the figure, the metal wire portion 61 has a larger cross-sectional area, and shows the state in which the angle and position of the welding laser emitting device are set so that the laser is irradiated to the metal wire portion 61. Yes.

断面積の大きい方に照射する理由は次のとおりである。すなわち、レーザ照射による溶融体積は、断面積のより大きな金属線部において、より大きい。したがって、当該金属線部に対するレーザ照射はより多量の溶融金属を発生させ、これが他方の小径の金属線部の端部を充分に包み込むことができ、充分な接合を実現できるからである。つまり、この場合溶接の程度は、溶接対象部位量に対する溶接に供される溶融金属量が大きいことによってより完全なものとなり、これが溶接部位の強度にも関連する。大径の金属線部側にレーザを照射することにより、溶接効果を高め、また溶接部位の強度を大きくすることができる。   The reason for irradiating the larger cross-sectional area is as follows. That is, the molten volume by laser irradiation is larger in the metal wire portion having a larger cross-sectional area. Therefore, the laser irradiation on the metal wire portion generates a larger amount of molten metal, which can sufficiently wrap the end portion of the other small-diameter metal wire portion, and can realize sufficient bonding. In other words, in this case, the degree of welding becomes more complete when the amount of molten metal provided for welding with respect to the amount of the portion to be welded is large, and this is also related to the strength of the welded portion. By irradiating the large-diameter metal wire portion with laser, the welding effect can be enhanced and the strength of the welded portion can be increased.

図6において示すように、本発明の溶接金属線製造方法では、レーザ照射径の中心が、両被溶接物61、62の各軸上を含む軸間領域D内のいずこかに命中するように、溶接用レーザ出射装置63等を用いてレーザの照射を行うこととすることができる(上記(9)の発明)。該軸間領域D内と、Dの外側領域E1、E2とを比べると、両金属線部61、62の溶接がなされる領域はいうまでもなくDである。そして、溶接における熱伝達は伝達距離が短いほど効率よく行われる。したがって、レーザ照射を該軸間領域D内に照射径中心が命中するようにして行うことにより、両各金属線部61、62が接触している領域であるDにレーザが照射されるため、接触部位CTにおいて熱伝達が効率よく行われ、両金属線部61、62を溶かし、互いに溶かし合わせることが可能となり、溶接効果および効率が高くなり、溶接部位の強度を高めることができる。   As shown in FIG. 6, in the weld metal wire manufacturing method of the present invention, the center of the laser irradiation diameter hits anywhere in the inter-axis region D including the respective axes of the workpieces 61 and 62. Thus, laser irradiation can be performed using the laser emitting device 63 for welding or the like (the invention of (9) above). When comparing the inter-axis region D with the outer regions E1 and E2 of D, the region where the metal wire portions 61 and 62 are welded is of course D. And heat transfer in welding is performed more efficiently as the transfer distance is shorter. Therefore, by performing laser irradiation so that the center of the irradiation diameter hits in the inter-axis region D, the laser is irradiated to D which is a region where both the metal wire portions 61 and 62 are in contact with each other. Heat transfer is efficiently performed at the contact portion CT, and both the metal wire portions 61 and 62 can be melted and melted together, so that the welding effect and efficiency are increased, and the strength of the welded portion can be increased.

図6において、63は溶接用レーザ出射装置であるが、後述するようにレーザの代わりに電子ビームあるいはアークを用いて溶接する場合には、それぞれ溶接用電子ビーム出射装置、溶接用アーク出射装置が用いられる。   In FIG. 6, reference numeral 63 denotes a welding laser emission device. However, as will be described later, when welding is performed using an electron beam or an arc instead of a laser, a welding electron beam emission device and a welding arc emission device are provided. Used.

以上、レーザ溶接を用いた本発明の溶接金属線製造方法を説明したが、本発明において用いることのできる溶接方法はレーザ溶接には限定されない。つまり、レーザに替えて電子ビームもしくはアークによる溶接、あるいはまたその他適宜の溶接方法を用いることができる(上記(10)の発明)。たとえば、超音波接合、拡散接合、摩擦圧接、電気抵抗加熱融着、圧着等である。   As mentioned above, although the welding metal wire manufacturing method of this invention using laser welding was demonstrated, the welding method which can be used in this invention is not limited to laser welding. That is, it is possible to use an electron beam or arc welding instead of the laser, or any other appropriate welding method (the invention of (10) above). For example, ultrasonic bonding, diffusion bonding, friction welding, electric resistance heating fusion, pressure bonding, and the like.

図7(a)〜(c)は、本発明の溶接金属線製造方法における二の金属線部の接触方法につき、上述した以外の例を示した平面図である。
図7(a)は、一方の金属線部72Aの溶接対象部位(端部)に凸部724を設け、これと他の金属線部71Bの端部を接触させて並置し、溶接処理を施す例である。図では、比較的小径の金属線部72Aに凸部724が設けられているが、両金属線部の断面積が相違する場合、大径の金属線部71Aに設ける構成であってもよい。
FIGS. 7A to 7C are plan views showing examples other than those described above with respect to the contact method of the second metal wire portion in the weld metal wire manufacturing method of the present invention.
In FIG. 7A, a convex portion 724 is provided at a welding target portion (end portion) of one metal wire portion 72A, this is placed in contact with the end portion of another metal wire portion 71B, and a welding process is performed. It is an example. In the figure, the convex portion 724 is provided on the metal wire portion 72A having a relatively small diameter. However, when the cross-sectional areas of the two metal wire portions are different, the metal wire portion 71A having a large diameter may be provided.

図7(b)は、一方の金属線部72Bを折り曲げて、その端部を、他の金属線部72Aの端部を接触させて並置し、溶接処理を施す例である。両金属線部の断面積が相違する場合、図の例とは逆により大径の金属線部71Bの方を折り曲げる構成であってもよい。
図7(c)は、双方の金属線部71C、72Cを折り曲げて、それぞれの端部を接触させて並置し、溶接処理を施す例である。
このように、被溶接部が溶融する重ね合わせ部分においては最低限並置しておくかあるいは接触箇所が必要であるが、重ね合わせ部分から離れた箇所では、線および線束はどのような形態に加工されてあってもかまわない。
FIG. 7B is an example in which one metal wire portion 72B is bent and its end portion is placed side by side in contact with the end portion of the other metal wire portion 72A to perform a welding process. When the cross-sectional areas of the two metal wire portions are different, the large-diameter metal wire portion 71B may be bent in the opposite direction to the example shown in the drawing.
FIG. 7C is an example in which both metal wire portions 71C and 72C are bent, the respective end portions are brought into contact with each other, and the welding process is performed.
In this way, at the overlapping part where the welded part is melted, it is necessary to place it in parallel or at least a contact point, but in a place away from the overlapping part, the line and the bundle are processed in any form. It does not matter if it has been done.

以下、実施例により本発明をさらに詳細に説明するが、本発明はこれら実施例に限定されるものではない。
<実施例1 YAGレーザ溶接による溶接金属線(その1)>
溶接金属線の作製
絶縁被覆チューブ内に挿入された、線径が0.2mmの銅線素線7本からなる金属線束について、その先端約5mm長さ分の被覆チューブを除去した後、金属線束ごと捻回して各素線を密着させ、線径0.2mmのFe合金単線と先端部を重ね合わせて、パルス式YAGレーザによる溶接試験を行った。重ね合わせ長さは1mmとした。金属線束の横断面中心とFe合金単線の横断面中心を結ぶ線分とYAGレーザ照射方向とのなす角度は変化させた。YAGレーザは、パルス幅8msの単発で、ジャストフォーカスでパルスエネルギーを変えて照射した。
EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to these Examples.
Example 1 Welded metal wire by YAG laser welding (part 1)
Preparation of welded metal wire After removing the covering tube for a length of about 5 mm from the end of a metal wire bundle consisting of seven copper wire strands having a wire diameter of 0.2 mm inserted into an insulation-coated tube, the metal wire bundle Each wire was closely twisted, and an Fe alloy single wire having a wire diameter of 0.2 mm and a tip portion were overlapped, and a welding test using a pulsed YAG laser was performed. The overlapping length was 1 mm. The angle formed between the line segment connecting the cross-sectional center of the metal wire bundle and the cross-sectional center of the Fe alloy single wire and the YAG laser irradiation direction was changed. The YAG laser was a single shot with a pulse width of 8 ms, and irradiation was performed by changing the pulse energy with just focus.

強度評価
溶接部の強度評価は引張試験による母材破断の有無で行い、金属線束より引張破断荷重の低いFe合金線で破断した場合を合格、溶接部で破断した場合を不合格とした。
Strength evaluation The strength evaluation of the welded part was performed based on whether or not the base metal was broken by a tensile test.

絶縁性能評価
溶接部およびその周りの金属部を樹脂コーティング処理し、その後、その部分を水没させ、金属線束と水の間でDC500Vを印加した状態で絶縁抵抗値を測定した。溶接部から端部が露出しているものは水中で電流が流れて絶縁不足となることが測定されるため、絶縁抵抗値100MΩ未満のものを不合格とし、それ以上の値のものを合格とした。
表1に、実施例1の各溶接金属線作製条件およびそれぞれの評価結果をまとめて示す。
Insulation performance evaluation The welded part and the surrounding metal part were subjected to resin coating treatment, and then the part was submerged, and the insulation resistance value was measured in a state where DC 500 V was applied between the metal wire bundle and water. If the end of the weld is exposed, it is measured that the current flows in water and insulation is insufficient. Therefore, the insulation resistance value of less than 100 MΩ is rejected, and the value higher than that is acceptable. did.
Table 1 summarizes the weld metal wire production conditions of Example 1 and the evaluation results thereof.

Figure 2005118805
Figure 2005118805

図8は、上記実施例1−1の溶接金属線の溶接前の状態を示す顕微鏡写真図、また図9は実施例1−1の溶接金属線のレーザ照射側(表側)から見た溶接後の状態を示す顕微鏡写真図、図10は同じく裏側から見た溶接後の状態を示す顕微鏡写真図である。これらの図に示されるように、金属線束と合金単線は実施例1−1の条件でのレーザ溶接により、完全な溶接部の形成をもって溶接されたことが、顕微鏡観察により認められた。しかも金属線束、合金単線ともその端部の露出は一切認められず、両方の端部が溶接部内に内包された状態の溶接仕上がりであった。写真図は実施例1−1に係るものであるが、他の各実施例1−2、1−3、1−4、1−5、1−6においてもまったく同様の結果が得られ、いずれの実施例においても、端部露出がなく、完全な溶接部の形成される溶接がなされることが示された。   FIG. 8 is a photomicrograph showing the state before welding of the weld metal wire of Example 1-1, and FIG. 9 is after welding as seen from the laser irradiation side (front side) of the weld metal wire of Example 1-1. FIG. 10 is a photomicrograph showing the state after welding as seen from the back side. As shown in these figures, it was confirmed by microscopic observation that the metal wire bundle and the alloy single wire were welded with the formation of a complete weld by laser welding under the conditions of Example 1-1. Moreover, exposure of the end portions of the metal wire bundle and the alloy single wire was not recognized at all, and both ends were welded in the welded portion. Although the photographic diagram relates to Example 1-1, the same results were obtained in each of Examples 1-2, 1-3, 1-4, 1-5, and 1-6. Also in this example, it was shown that there is no end portion exposure and welding is performed in which a complete weld is formed.

表1に示されたように、レーザ照射角度15°〜165°という広範な角度範囲において、溶接強度、絶縁抵抗値ともに良好な結果を与える溶接金属線を得ることができた。つまり、レーザ照射角度を上記範囲内に設定し、かつレーザの照射中心位置を金属線束と合金単線の軸間領域内に設定した場合は、引張試験において溶接部が破断することはなく、また絶縁抵抗値も100MΩ以上の良好な値を示す溶接金属線が得られた。   As shown in Table 1, it was possible to obtain a weld metal wire that gave good results in both welding strength and insulation resistance value in a wide angle range of laser irradiation angles of 15 ° to 165 °. In other words, if the laser irradiation angle is set within the above range and the laser irradiation center position is set within the inter-axis region between the metal wire bundle and the alloy single wire, the weld will not break in the tensile test, and insulation A weld metal wire having a good resistance value of 100 MΩ or more was obtained.

一方、比較例1−1〜1−6はいずれも、引張試験において溶接部が破断し、また絶縁抵抗値も100MΩ未満の値となり、溶接強度、絶縁抵抗値いずれの点においても良好な結果を与える溶接金属線を得ることができなかった。これら比較例における上記実施例1−1等とは異なる条件を考察すると、比較例1―1、1−2、1−5、1−6は、レーザ照射角度が10°未満または170°以上に設定されたものであった。また、比較例1−3、1−4は、レーザの照射中心位置が前記軸間領域外に設定されたものであった。   On the other hand, in all of Comparative Examples 1-1 to 1-6, the welded portion was broken in the tensile test, and the insulation resistance value was also less than 100 MΩ, and good results were obtained in both the welding strength and the insulation resistance value. The given weld metal wire could not be obtained. Considering conditions different from those of Example 1-1 and the like in these comparative examples, Comparative Examples 1-1, 1-2, 1-5, and 1-6 have laser irradiation angles of less than 10 ° or 170 ° or more. It was set. In Comparative Examples 1-3 and 1-4, the laser irradiation center position was set outside the inter-axis region.

これら比較例において良好な評価が得られなかったのは、このような条件では、レーザ照射により生じる溶融金属の溶融体積が小さいために、溶接される領域が小さいものにとどまり、溶接部の強度が低下したためと考えられる。また、両者の端部が完全には溶融せずに残存し、樹脂コーティング後に溶接部から端部が露出する状態の溶接仕上がりとなった。このため、測定された絶縁抵抗値が100MΩ未満の不良値を示したものと考えられる。   In these comparative examples, good evaluation was not obtained because, under such conditions, the molten volume of the molten metal generated by laser irradiation was small, so that the area to be welded was small, and the strength of the welded portion was small. This is thought to be due to a decline. Moreover, both ends were not completely melted and remained, resulting in a welding finish in which the ends were exposed from the weld after the resin coating. For this reason, it is considered that the measured insulation resistance value showed a defect value of less than 100 MΩ.

<実施例2 電子ビーム溶接による溶接金属線>
YAGレーザの代わりに電子ビームを用いた他は実施例1と同様の条件にて溶接金属線の作製および各評価を行った。電子ビーム照射は、前記実施例1のレーザの場合とほぼ同等のエネルギーになるように電圧、電流を調整して行った。
表2に、実施例2の各溶接金属線作製条件およびそれぞれの評価結果をまとめて示す。
<Example 2 Welded metal wire by electron beam welding>
A weld metal wire was prepared and evaluated under the same conditions as in Example 1 except that an electron beam was used instead of the YAG laser. The electron beam irradiation was performed by adjusting the voltage and current so that the energy was almost equal to that in the case of the laser of Example 1.
Table 2 summarizes the weld metal wire production conditions of Example 2 and the evaluation results thereof.

Figure 2005118805
Figure 2005118805

本実施例における各具体的実施例2−1、2−2、2−3、2−4、2−5、2−6においても、前記実施例1と同様の結果が得られ、いずれの実施例においても、端部露出がなく、完全な溶接部の形成される溶接がなされることが、顕微鏡観察により示された。   In each of the specific examples 2-1, 2-2, 2-3, 2-4, 2-5, and 2-6 in the present example, the same results as in Example 1 were obtained. Also in the example, it was shown by microscope observation that there is no end exposure and a weld with a complete weld is formed.

表2に示されたように、電子ビーム照射角度15°〜165°という広範な角度範囲において、溶接強度、絶縁抵抗値ともに良好な結果を与える溶接金属線を得ることができた。つまり、電子ビーム照射角度を上記範囲内に設定し、かつ電子ビームの照射中心位置を金属線束と合金単線の軸間領域内に設定した場合は、引張試験において溶接部が破断することはなく、また絶縁抵抗値も100MΩ以上の良好な値を示す溶接金属線が得られた。   As shown in Table 2, it was possible to obtain a weld metal wire that gave good results in both the welding strength and the insulation resistance value in a wide angle range of an electron beam irradiation angle of 15 ° to 165 °. That is, when the electron beam irradiation angle is set within the above range, and the irradiation center position of the electron beam is set within the interaxial region of the metal wire bundle and the alloy single wire, the weld does not break in the tensile test, In addition, a weld metal wire having a good insulation resistance value of 100 MΩ or more was obtained.

一方、比較例2−1〜2−6はいずれも、引張試験において溶接部が破断し、また絶縁抵抗値も100MΩ未満の値となり、溶接強度、絶縁抵抗値いずれの点においても良好な結果を与える溶接金属線を得ることができなかった。これら比較例における上記実施例2−1等とは異なる条件を考察すると、比較例2―1、2−2、2−5、2−6は、レーザ照射角度が10°未満または170°以上に設定されたものであった。また、比較例2−3、2−4は、電子ビームの照射中心位置が前記軸間領域外に設定されたものであった。   On the other hand, in all of Comparative Examples 2-1 to 2-6, the welded portion was broken in the tensile test, and the insulation resistance value was less than 100 MΩ, and good results were obtained in both the welding strength and the insulation resistance value. The given weld metal wire could not be obtained. Considering conditions different from those of Example 2-1 and the like in these comparative examples, Comparative Examples 2-1, 2-2, 2-5, and 2-6 have laser irradiation angles of less than 10 ° or 170 ° or more. It was set. In Comparative Examples 2-3 and 2-4, the irradiation center position of the electron beam was set outside the inter-axis region.

これら比較例において良好な評価が得られなかった理由は、前述の実施例1と同様の理由と考えられる。   The reason why good evaluation was not obtained in these comparative examples is considered to be the same reason as in Example 1 described above.

<実施例3 アーク溶接による溶接金属線>
YAGレーザの代わりにアークを用いた他は実施例1と同様の条件にて溶接金属線の作製および各評価を行った。アーク照射は、前記実施例1のレーザの場合とほぼ同等のエネルギーになるように電圧、電流を調整して行った。
表3に、実施例3の各溶接金属線作製条件およびそれぞれの評価結果をまとめて示す。
Example 3 Welded metal wire by arc welding
A weld metal wire was prepared and evaluated under the same conditions as in Example 1 except that an arc was used instead of the YAG laser. The arc irradiation was performed by adjusting the voltage and current so that the energy was almost equal to that in the case of the laser of Example 1.
Table 3 summarizes the weld metal wire production conditions of Example 3 and the evaluation results thereof.

Figure 2005118805
Figure 2005118805

本実施例における各具体的実施例3−1、3−2、3−3、3−4、3−5、3−6においても、前記実施例1、実施例2と同様の結果が得られ、いずれの実施例においても、端部露出がなく、完全な溶接部の形成される溶接がなされることが、顕微鏡観察により示された。   In each of the specific examples 3-1, 3-2, 3-3, 3-4, 3-5, and 3-6 in the present example, the same results as in the first and second examples were obtained. In any of the examples, it was shown by microscopic observation that the end portion was not exposed and a weld with a complete weld portion was formed.

表3に示されたように、アーク照射角度15°〜165°という広範な角度範囲において、溶接強度、絶縁抵抗値ともに良好な結果を与える溶接金属線を得ることができた。つまり、アーク照射角度を上記範囲内に設定し、かつアークの照射中心位置を金属線束と合金単線の軸間領域内に設定した場合は、引張試験において溶接部が破断することはなく、また絶縁抵抗値も100MΩ以上の良好な値を示す溶接金属線が得られた。   As shown in Table 3, a weld metal wire that gave good results in both welding strength and insulation resistance value could be obtained in a wide angle range of arc irradiation angles of 15 ° to 165 °. In other words, when the arc irradiation angle is set within the above range and the arc irradiation center position is set within the inter-axis region between the metal wire bundle and the alloy single wire, the weld will not break in the tensile test and insulation A weld metal wire having a good resistance value of 100 MΩ or more was obtained.

一方、比較例3−1〜3−6はいずれも、引張試験において溶接部が破断し、また絶縁抵抗値も100MΩ未満の値となり、溶接強度、絶縁抵抗値いずれの点においても良好な結果を与える溶接金属線を得ることができなかった。これら比較例における上記実施例3−1等とは異なる条件を考察すると、比較例3―1、3−2、3−5、3−6は、レーザ照射角度が10°未満または170°以上に設定されたものであった。また、比較例3−3、3−4は、アークの照射中心位置が前記軸間領域外に設定されたものであった。   On the other hand, in Comparative Examples 3-1 to 3-6, the welded part was broken in the tensile test, and the insulation resistance value was less than 100 MΩ, and good results were obtained in both the welding strength and the insulation resistance value. The given weld metal wire could not be obtained. Considering conditions different from those of Example 3-1 and the like in these comparative examples, Comparative Examples 3-1, 3-2, 3-5, and 3-6 have laser irradiation angles of less than 10 ° or 170 ° or more. It was set. In Comparative Examples 3-3 and 3-4, the irradiation center position of the arc was set outside the inter-axis region.

これら比較例において良好な評価が得られなかった理由は、前述の実施例1と同様の理由と考えられる。   The reason why good evaluation was not obtained in these comparative examples is considered to be the same reason as in Example 1 described above.

<実施例4 YAGレーザ溶接による溶接金属線(その2)>
金属線束として絶縁被覆チューブ内に線径が0.2mmの銅線12本が挿入されているものを用い、Fe合金単線として線径0.4mmのものを用いた他は実施例1と同様の条件にて溶接金属線の作製および各評価を行った。
表4に、実施例4の各溶接金属線作製条件およびそれぞれの評価結果をまとめて示す。
Example 4 Welded Metal Wire by YAG Laser Welding (Part 2)
Example 1 except that a metal wire bundle having 12 copper wires having a wire diameter of 0.2 mm inserted in an insulation-coated tube and a Fe alloy single wire having a wire diameter of 0.4 mm was used. Welded metal wires were prepared and evaluated under the conditions.
Table 4 summarizes the weld metal wire production conditions of Example 4 and the evaluation results thereof.

Figure 2005118805
Figure 2005118805

金属線束、合金単線とも実施例1よりもサイズの大きい本実施例における各具体的実施例4−1、4−2、4−3、4−4、4−5、4−6においても、前記実施例1、実施例2、実施例3と同様の結果が得られ、いずれの実施例においても、端部露出がなく、完全な溶接部の形成される溶接がなされることが、顕微鏡観察により示された。   Also in each of the concrete examples 4-1, 4-2, 4-3, 4-4, 4-5, 4-6 in the present embodiment, in which both the metal wire bundle and the alloy single wire are larger in size than the embodiment 1, The results similar to those of Example 1, Example 2, and Example 3 were obtained. In any of the examples, it was confirmed by microscopic observation that there was no end portion exposure and welding with which a complete weld was formed. Indicated.

表4に示されたように、レーザ照射角度15°〜165°という広範な角度範囲において、溶接強度、絶縁抵抗値ともに良好な結果を与える溶接金属線を得ることができた。つまり、レーザ照射角度を上記範囲内に設定し、かつレーザの照射中心位置を金属線束と合金単線の軸間領域内に設定した場合は、引張試験において溶接部が破断することはなく、また絶縁抵抗値も100MΩ以上の良好な値を示す溶接金属線が得られた。   As shown in Table 4, it was possible to obtain a weld metal wire that gave good results in both welding strength and insulation resistance value in a wide angle range of laser irradiation angles of 15 ° to 165 °. In other words, if the laser irradiation angle is set within the above range and the laser irradiation center position is set within the inter-axis region between the metal wire bundle and the alloy single wire, the weld will not break in the tensile test, and insulation A weld metal wire having a good resistance value of 100 MΩ or more was obtained.

一方、比較例4−1〜4−6はいずれも、引張試験において溶接部が破断し、また絶縁抵抗値も100MΩ未満の値となり、溶接強度、絶縁抵抗値いずれの点においても良好な結果を与える溶接金属線を得ることができなかった。これら比較例における上記実施例4−1等とは異なる条件を考察すると、比較例4―1、4−2、4−5、4−6は、レーザ照射角度が10°未満または170°以上に設定されたものであった。また、比較例4−3、4−4は、レーザの照射中心位置が前記軸間領域外に設定されたものであった。   On the other hand, in all of Comparative Examples 4-1 to 4-6, the welded portion was broken in the tensile test, and the insulation resistance value was less than 100 MΩ, and good results were obtained in both the welding strength and the insulation resistance value. The given weld metal wire could not be obtained. Considering conditions different from those of Example 4-1 and the like in these comparative examples, Comparative Examples 4-1, 4-2, 4-5, and 4-6 have laser irradiation angles of less than 10 ° or 170 ° or more. It was set. In Comparative Examples 4-3 and 4-4, the laser irradiation center position was set outside the inter-axis region.

これら比較例において良好な評価が得られなかった理由は、前述の実施例1と同様の理由と考えられる。   The reason why good evaluation was not obtained in these comparative examples is considered to be the same reason as in Example 1 described above.

<実施例5 温度センサとリード線の溶接>
図11は、上記実施例1−6と同じ条件により、温度センサとリード線をレーザ溶接して得た溶接金属線の斜視図である。溶接強度、絶縁抵抗値ともに良好な結果が得られたとともに、図12の従来例に図示されていたような露出端部がなく、保守性、取り扱い性にも優れる形態の溶接金属線が得られた。
<Example 5 Temperature sensor and lead wire welding>
FIG. 11 is a perspective view of a weld metal wire obtained by laser welding a temperature sensor and a lead wire under the same conditions as in Example 1-6. Good results were obtained in both welding strength and insulation resistance, and there was no exposed end as shown in the conventional example of FIG. 12, and a weld metal wire with excellent maintainability and handleability was obtained. It was.

以上のとおり、本発明の溶接された金属線およびその製造方法によれば、比較的簡易な技術により溶接部の絶縁を充分に得ることができ、電気抵抗値等の電気特性を損なうことがなく、さらに溶接強度にも優れた溶接金属線を得ることができる。得られる溶接金属線はまた、断線等破損防止に優れ、保守性および取り扱い性にも優れており、産業上の利用性が極めて高い発明である。   As described above, according to the welded metal wire and the manufacturing method thereof of the present invention, the insulation of the welded portion can be sufficiently obtained by a relatively simple technique without impairing the electrical characteristics such as the electrical resistance value. In addition, a weld metal wire having excellent welding strength can be obtained. The obtained welded metal wire is also excellent in preventing breakage such as disconnection, excellent in maintainability and handleability, and is an invention with extremely high industrial applicability.

溶接された金属線の要部構成を示す平面図である。It is a top view which shows the principal part structure of the welded metal wire. 図1(a)に示す構成から看取される溶接前の両金属線部の配置状態を示す平面図である。It is a top view which shows the arrangement | positioning state of the both metal wire parts before welding seen from the structure shown to Fig.1 (a). 本発明の溶接された金属線の要部側面構成を示す図であり、図1(a)中のIIa−IIa’矢視切断面を含む側面図である。ハッチングの付されているCs1は第一の金属線部の溶接部と非溶接部との境界部における軸線方向略直交断面であり、非溶接部である。Wdは溶接部であり、その側面部分が図示されている。It is a figure which shows the principal part side surface structure of the welded metal wire of this invention, and is a side view containing the IIa-IIa 'arrow cut surface in Fig.1 (a). Cs1 to which hatching is given is a substantially orthogonal cross section in the axial direction at the boundary portion between the welded portion and the non-welded portion of the first metal wire portion, and is a non-welded portion. Wd is a welded portion, and its side surface portion is illustrated. 本発明の溶接された金属線の要部側面構成を示す図であり、図1(a)中のIIb−IIb’ 矢視切断面を含む側面図である。ハッチングの付されているCs2は第二の金属線部の溶接部と非溶接部との境界部における軸線方向略直交断面であり、非溶接部である。Wdは溶接部であり、その側面部分が図示されている。It is a figure which shows the principal part side surface structure of the welded metal wire of this invention, and is a side view containing the IIb-IIb 'arrow cut surface in Fig.1 (a). The hatched Cs2 is a substantially orthogonal cross section in the axial direction at the boundary between the welded portion and the non-welded portion of the second metal wire portion, and is a non-welded portion. Wd is a welded portion, and its side surface portion is illustrated. 本発明溶接金属線にかかる金属線部の構成例を示す要部斜視図である。It is a principal part perspective view which shows the structural example of the metal wire part concerning this invention weld metal wire. 本発明の溶接された金属線の製造方法に関し、該方法前段を示す平面図である。It is a top view which shows the manufacturing method of the welded metal wire of this invention which shows this method front stage. 本発明の溶接された金属線の製造方法を示す側面図である。It is a side view which shows the manufacturing method of the welded metal wire of this invention. 本発明の溶接された金属線の製造方法に関し、該方法使用後の状態を示す平面図である。It is a top view which shows the state after using this method regarding the manufacturing method of the welded metal wire of this invention. 本溶接金属線製造方法の別の構成について断面方向から説明する説明図である。It is explanatory drawing explaining another structure of this welding metal wire manufacturing method from a cross-sectional direction. レーザ照射角度設定の効果を説明する説明図である。It is explanatory drawing explaining the effect of a laser irradiation angle setting. 本発明溶接金属線製造方法におけるレーザ照射方法を断面方向から説明した説明図である。It is explanatory drawing explaining the laser irradiation method in this invention weld metal wire manufacturing method from the cross-sectional direction. 本発明の溶接金属線製造方法における二の金属線部の接触方法につき、上述した以外の例を示した平面図である。It is the top view which showed the example except having mentioned above about the contact method of the 2nd metal wire part in the weld metal wire manufacturing method of this invention. 同じく二の金属線部の他の接触方法を示した平面図である。It is the top view which showed the other contact method of the same 2 metal wire part. 同じく二の金属線部の他の接触方法を示した平面図である。It is the top view which showed the other contact method of the same 2 metal wire part. 実施例1−1の溶接金属線の溶接前の状態を示す顕微鏡写真図である。It is a microscope picture figure which shows the state before welding of the weld metal wire of Example 1-1. 実施例1−1の溶接金属線のレーザ照射側(表側)から見た溶接後の状態を示す顕微鏡写真図である。It is a microscope picture figure which shows the state after the welding seen from the laser irradiation side (front side) of the welding metal wire of Example 1-1. 実施例1−1の溶接金属線のレーザ照射反対側(裏側)から見た溶接後の状態を示す顕微鏡写真図である。It is a microscope picture figure which shows the state after the welding seen from the laser irradiation opposite side (back side) of the welding metal wire of Example 1-1. 実施例1−6と同じ条件により、温度センサとリード線をレーザ溶接して得た溶接金属線の斜視図である。It is a perspective view of the welding metal wire obtained by laser-welding a temperature sensor and a lead wire on the same conditions as Example 1-6. 従来技術による溶接金属線の構成を示す説明図である。It is explanatory drawing which shows the structure of the welding metal wire by a prior art.

符号の説明Explanation of symbols

1、41、51、61…第一の金属線部
2、42、52、62…第二の金属線部
Wd、Wd4…溶接部
1T、2T、41T、42T、51T、52T…金属線部の端部
Cs1…第一の金属線部の溶接部と非溶接部との境界部における軸線方向略直交断面
Cs2…第二の金属線部の溶接部と非溶接部との境界部における軸線方向略直交断面
31…金属線部(金属線束)
311、312、313、314、315、316、317…金属素線
40…溶接金属線
43、63…溶接用レーザ(電子ビーム、アーク)出射装置
411、412、413、414、415、416、417…金属素線
S…重ね合わせ領域
P…重ね合わせ領域が含まれる平面
L…レーザ(電子ビーム、アーク)照射、
CT…接触部位
511、512、513、514、515、516、517…金属素線
C1C2…線分C1C2(直線C1C2)
D…軸間領域
E1、E2…軸間領域外領域
71A、71B、71C…第一の金属線部
72A、72B、72C…第二の金属線部
724…凸部
80…センサ
81A、81B…金属線束
82A、82B…金属単線
85A、85B…絶縁被覆チューブ
98…センサ
91A、91B…金属線束
92A、92B…金属単線
95A、95B…絶縁被覆チューブ
WdA、WdB…溶接部
91TA、92TA、91TB、92TB…溶接部から露出した端部












1, 41, 51, 61 ... 1st metal wire part 2, 42, 52, 62 ... 2nd metal wire part Wd, Wd4 ... Welded part 1T, 2T, 41T, 42T, 51T, 52T ... of metal wire part End portion Cs1... Substantially orthogonal cross section Cs2 at the boundary between the welded portion and the non-welded portion of the first metal wire portion, approximately the axial direction at the boundary between the welded portion and the non-welded portion of the second metal wire portion Orthogonal cross section 31 ... Metal wire part (metal wire bundle)
311, 312, 313, 314, 315, 316, 317 ... metal wire 40 ... weld metal wire 43, 63 ... welding laser (electron beam, arc) emitting device 411, 412, 413, 414, 415, 416, 417 ... Metal wire S ... Superposition region P ... Plane L including superposition region ... Laser (electron beam, arc) irradiation,
CT ... contact part 511, 512, 513, 514, 515, 516, 517 ... metal element wire C1C2 ... line segment C1C2 (straight line C1C2)
D ... interaxial region E1, E2 ... interaxial region outside region 71A, 71B, 71C ... first metal wire portion 72A, 72B, 72C ... second metal wire portion 724 ... convex portion 80 ... sensors 81A, 81B ... metal Wire bundles 82A, 82B ... Metal single wires 85A, 85B ... Insulation coated tube 98 ... Sensors 91A, 91B ... Metal wire bundles 92A, 92B ... Metal single wires 95A, 95B ... Insulation coated tubes WdA, WdB ... Welds 91TA, 92TA, 91TB, 92TB ... End exposed from weld












Claims (10)

一または複数の金属素線からなる第一の金属線部と、一または複数の金属素線からなる第二の金属線部と、それらの端部同士が溶接された状態に形成された溶接部と、からなる溶接された金属線であって、両金属線部の各端部がいずれも該溶接部内に含まれてあることを特徴とする、溶接された金属線。 A first metal wire portion made of one or more metal strands, a second metal wire portion made of one or more metal strands, and a welded portion formed by welding the end portions thereof. A welded metal wire comprising: a welded metal wire, wherein both end portions of both metal wire portions are included in the weld portion. 前記第一の金属線部の溶接部と非溶接部との境界部における軸線方向略直交断面と、前記第二の金属線部の溶接部と非溶接部との境界部における軸線方向略直交断面とが、相互にずれているか、または略外接していることを特徴とする、請求項1に記載の溶接された金属線。 A substantially orthogonal cross section in the axial direction at the boundary portion between the welded portion and the non-welded portion of the first metal wire portion, and a substantially orthogonal cross section in the axial direction at the boundary portion between the welded portion and the non-welded portion of the second metal wire portion. The welded metal wires according to claim 1, characterized in that they are offset from each other or substantially circumscribed. 一または複数の金属素線からなる第一の金属線部と、一または複数の金属素線からなる第二の金属線部と、それらの溶接端部同士が溶接されて形成された溶接部と、からなる、溶接された金属線であって、該溶接部には、該溶接端部がその末端側において溶接処理を受けずに残った場合に形成され得る、露出端部を含む余剰の金属線からなる突出部がないことを特徴とする、溶接された金属線。 A first metal wire portion made of one or more metal strands, a second metal wire portion made of one or more metal strands, and a weld portion formed by welding their weld ends to each other; A welded metal wire comprising an exposed end that can be formed when the weld end remains unwelded at the distal end thereof A welded metal wire, characterized in that there are no protrusions made of wire. 前記二の金属線部は、少なくともその一方が、複数の金属素線が密着した状態の金属線束であることを特徴とする、請求項1ないし3のいずれかに記載の溶接された金属線。 The welded metal wire according to any one of claims 1 to 3, wherein at least one of the two metal wire portions is a metal wire bundle in a state where a plurality of metal wires are in close contact with each other. 一または複数の金属素線からなる第一の金属線部と、一または複数の金属素線からなる第二の金属線部の端部同士を重ね合わせ、これにレーザ溶接を施すことによって、これら被溶接物が溶接されてなる溶接済み金属線を製造する方法であって、該両端部をその側面部同士が接するように並置させてなる側面方向上の重ね合わせ領域を形成し、該重ね合わせ領域が含まれる平面の外部から該重ね合わせ領域に対してレーザを照射して該両端部を溶接することにより溶接済み金属線を得ることを特徴とする、溶接された金属線の製造方法。 By superimposing the ends of the first metal wire portion made of one or more metal wires and the second metal wire portion made of one or more metal wires, and applying laser welding thereto, these A method of manufacturing a welded metal wire formed by welding an object to be welded, wherein both end portions are juxtaposed so that the side surface portions are in contact with each other to form an overlapping region in the side surface direction, and the overlapping A method for producing a welded metal wire, characterized in that a welded metal wire is obtained by irradiating a laser to the overlapping region from outside a plane including the region and welding the both ends. 前記第一の金属線部は複数の金属素線が密着した状態の金属線束であり、前記第二の金属線部は他の金属単線もしくは金属線束であり、該第一の金属線部と第二の金属線部の端部同士を重ね合わせ、これにレーザ溶接を施すことによって、これら被溶接物が溶接されてなる溶接済み金属線を製造する方法であって、該端部同士の重ね合わせはその側面部を接触させて行う重ね合わせであり、各被溶接物の軸線方向略直交断面中心を結ぶ線分とレーザの照射方向とのなす角度が10°ないし170°の範囲内であることを特徴とする、溶接された金属線の製造方法。 The first metal wire portion is a metal wire bundle in which a plurality of metal strands are in close contact, and the second metal wire portion is another metal single wire or a metal wire bundle, and the first metal wire portion and the first metal wire portion A method for producing a welded metal wire in which the welded objects are welded by superimposing ends of two metal wire portions and performing laser welding on the end portions, and superimposing the end portions Is a superposition performed by bringing the side surfaces into contact with each other, and the angle between the line connecting the centers of the substantially orthogonal cross sections of the workpieces and the laser irradiation direction is within the range of 10 ° to 170 °. A method for producing a welded metal wire, characterized by: 前記レーザ溶接を施すことによって、前記両金属線部の端面が内部に含まれる溶接部を形成することを特徴とする、請求項5または6に記載の溶接された金属線の製造方法。 The method for manufacturing a welded metal wire according to claim 5 or 6, wherein the laser welding is performed to form a welded portion in which end faces of both the metal wire portions are included. レーザの照射は、前記二の被溶接物のうち断面積の大きい方に対して行われることを特徴とする、請求項5ないし7のいずれかに記載の溶接された金属線の製造方法。 The method of manufacturing a welded metal wire according to any one of claims 5 to 7, wherein the laser irradiation is performed on one of the two workpieces having a larger cross-sectional area. 照射径の中心が、両被溶接物の各軸上を含む軸間領域内のいずこかに命中するようにレーザの照射が行われることを特徴とする、請求項5ないし7のいずれかに記載の溶接された金属線の製造方法。 The laser irradiation is performed so that the center of the irradiation diameter hits anywhere in an inter-axis region including on each axis of both workpieces. A method for producing a welded metal wire according to claim 1. 溶接方法は、レーザに替えて電子ビームあるいはアークを用いるものであることを特徴とする、請求項5ないし9のいずれかに記載の溶接された金属線の製造方法。
10. The method for producing a welded metal wire according to claim 5, wherein the welding method uses an electron beam or an arc instead of the laser.
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JP2006334667A (en) * 2005-05-27 2006-12-14 Snecma Manufacturing method of bonded sheet composed of metallic base material and ceramic filament, apparatus to perform the same, and bonded sheet obtained by the same
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