JPH04174911A - Extra fine electric wire - Google Patents
Extra fine electric wireInfo
- Publication number
- JPH04174911A JPH04174911A JP30118990A JP30118990A JPH04174911A JP H04174911 A JPH04174911 A JP H04174911A JP 30118990 A JP30118990 A JP 30118990A JP 30118990 A JP30118990 A JP 30118990A JP H04174911 A JPH04174911 A JP H04174911A
- Authority
- JP
- Japan
- Prior art keywords
- metal layer
- ultra
- fine
- copper
- nickel
- 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 68
- 239000002184 metal Substances 0.000 claims abstract description 68
- 229910000679 solder Inorganic materials 0.000 claims abstract description 44
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052802 copper Inorganic materials 0.000 claims abstract description 26
- 239000010949 copper Substances 0.000 claims abstract description 26
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 11
- 229910000990 Ni alloy Inorganic materials 0.000 claims abstract description 5
- 238000005260 corrosion Methods 0.000 claims description 31
- 230000007797 corrosion Effects 0.000 claims description 31
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 9
- 239000011651 chromium Substances 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 7
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 claims description 3
- 229910018487 Ni—Cr Inorganic materials 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000005476 soldering Methods 0.000 abstract description 30
- 230000008018 melting Effects 0.000 abstract description 7
- 238000002844 melting Methods 0.000 abstract description 7
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 abstract description 2
- 238000007733 ion plating Methods 0.000 abstract description 2
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 abstract description 2
- 238000010828 elution Methods 0.000 abstract 3
- 230000005611 electricity Effects 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000009713 electroplating Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 241000218202 Coptis Species 0.000 description 1
- 235000002991 Coptis groenlandica Nutrition 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QDWJUBJKEHXSMT-UHFFFAOYSA-N boranylidynenickel Chemical compound [Ni]#B QDWJUBJKEHXSMT-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- KERTUBUCQCSNJU-UHFFFAOYSA-L nickel(2+);disulfamate Chemical compound [Ni+2].NS([O-])(=O)=O.NS([O-])(=O)=O KERTUBUCQCSNJU-UHFFFAOYSA-L 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Landscapes
- Coating With Molten Metal (AREA)
- Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、時計用モータ、磁気ヘッド、リレー。[Detailed description of the invention] [Industrial application field] The present invention relates to a watch motor, a magnetic head, and a relay.
インダクタ等に使用される超小型コイルの捲線等として
用いられる極細電線に係り、特にハンダ付けにより電気
的接続を行うのに通した極細電線に関する。The present invention relates to ultra-fine electric wires used as windings for ultra-small coils used in inductors, etc., and particularly to ultra-fine electric wires that are passed through for electrical connection by soldering.
従来より、超小型コイル等の捲線として電気銅や無酸素
銅を芯線とし、その表面にポリウレタン等の樹脂を焼付
塗装して電気的絶縁被膜を形成した極細電線が用いられ
ていた。BACKGROUND ART Conventionally, ultrafine electric wires have been used as windings for ultra-small coils, etc., in which the core wire is made of electrolytic copper or oxygen-free copper, and the surface thereof is baked and coated with a resin such as polyurethane to form an electrically insulating coating.
そして、この極細電線で作られた超小型コイルのコイル
エンドを電気的に接続するために、−船釣に鉛−錫系ハ
ンダによるハンダ付けが行われている。In order to electrically connect the coil ends of the ultra-small coils made of these ultra-fine wires, soldering using lead-tin solder is carried out on boats.
ところが、極細電線の線径が数百ミクロンメータ以下に
なると、ハンダ付けを行う際に、芯線の銅が溶融したハ
ンダ中に拡散して溶出する所謂／Ｓンダ細り （溶食）
を生じ、その結果、極細電線自体が溶断してしまうとい
う問題を抱えていた。However, when the wire diameter of ultra-fine wires becomes several hundred microns or less, the copper in the core wire diffuses and dissolves into the molten solder during soldering, resulting in so-called thinning (erosion).
As a result, there was a problem in that the ultra-fine electric wire itself was fused.
また、従来において、この極細電線のハンダ付けによる
溶断を防止しようとする場合には、ハンダ付け作業に際
して厳密な作業管理を行い、ハンダ付け温度が高くなら
ないようにその温度を常時監視し、制御したり、ハンダ
付け時間を極力短縮するなどの注意を払わなければなら
ず、作業者が過度の作業負担を強いられていた。In addition, in the past, when trying to prevent melting due to soldering of ultra-thin wires, strict work management was carried out during the soldering work, and the temperature was constantly monitored and controlled to prevent the soldering temperature from becoming too high. Therefore, workers had to take precautions such as shortening the soldering time as much as possible, which placed an excessive burden on the workers.
さらに、従来の極細電線ではハンダ浴の温度を高くでき
ないために、ハンダ付けの作業性が悪いという欠点もあ
った。Furthermore, since the temperature of the soldering bath cannot be raised with conventional ultrafine electric wires, there is also the drawback that the soldering workability is poor.
また、ハンダ付けの際の溶断は、極細電線が細いほど生
し易いため、従来の極細電線の細径化には一定の限界（
数百ミクロンメータ程度）があり、これがコイル等をよ
り小型化することの妨げともなっていた。In addition, the thinner the ultra-fine wire is, the more likely it is that fusing occurs during soldering, so there is a certain limit to reducing the diameter of conventional ultra-fine wire (
(approximately several hundred micrometers), and this has been an obstacle to further miniaturization of coils and the like.
そこで本発明は、ハンダ付けを行う際に、芯線の銅がハ
ンダによって溶食して溶断してしまうことのない極細電
線を提供して、ハンダ付け作業を行う者の作業負担を軽
減させると共に、ハンダ付けの作業性を向上させ得るよ
うにすることを技術的課題とする。SUMMARY OF THE INVENTION Therefore, the present invention provides an ultra-fine electric wire in which the copper of the core wire will not be eroded by the solder and melted when soldering, thereby reducing the work burden of the person performing the soldering work, and The technical challenge is to improve the workability of attachment.
この課題を解決するために、本発明は、銅又は銅合金か
ら成る極細芯線に電気的絶縁被膜をコーティングした極
細電線において、前記極細芯線の表面に耐ハンダ溶食性
の良好な金属層が形成され、その金属層の上から前記絶
縁被膜がコーティングされたことを特徴とする。In order to solve this problem, the present invention provides an ultra-fine electric wire in which an ultra-fine core wire made of copper or a copper alloy is coated with an electrically insulating coating, in which a metal layer with good solder corrosion resistance is formed on the surface of the ultra-fine core wire. , the metal layer is coated with the insulating film.
本発明による極細電線は、銅又は銅合金から成る極細芯
線の表面に、耐ハンダ溶食性の良好な金属層を形成して
いるため、ハンダ付けの際に極細芯線の銅がハンダ浴中
に拡散溶出しにくくなり、従来の極細電線のようにハン
ダ細りによって溶断するおそれがなくなる。The ultra-fine electric wire according to the present invention has a metal layer with good solder corrosion resistance formed on the surface of the ultra-fine core wire made of copper or copper alloy, so that the copper of the ultra-fine core wire diffuses into the solder bath during soldering. It becomes difficult to elute, and there is no risk of melting due to thinning of the solder, which is the case with conventional ultra-fine wires.
したがって、ハンダ付け作業を行う際に、従来のような
厳密な作業管理を行う必要もなく、ハンダ付け作業を行
う者の作業負担が軽減される。Therefore, when performing the soldering work, there is no need to carry out strict work management as in the past, and the work burden on the person performing the soldering work is reduced.
また、極細電線が溶食しにくいことから、ハンダ浴の温
度を高くすることができ、ハンダ付けの作業性も向上す
る。Furthermore, since the ultra-fine wires are less susceptible to corrosion, the temperature of the soldering bath can be increased, and the workability of soldering is also improved.
さらに、耐ハンダ溶食性の良好な金属層を形成したこと
により、ハンダ付けによって溶断してしまう線径の限界
を従来より細くすることができ、そのため従来のものよ
りさらに細径化した極細電線を実用に供することが可能
となり、コイル等をより小型化することができる。Furthermore, by forming a metal layer with good solder corrosion resistance, we have been able to reduce the wire diameter limit that can melt during soldering. It becomes possible to put it to practical use, and the coil etc. can be further miniaturized.
なお、耐ハンダ溶食性の良好な金属層が形成された極細
芯線を引抜加工又は圧延加工によって細径化すれば、耐
ハンダ溶食性の良好な金属層に生したピンホールなどが
潰され、極細芯線に対するコーテイング品質が向上して
、極細芯線の溶食がより確実に防止される。In addition, if the ultra-fine core wire on which a metal layer with good solder corrosion resistance is formed is made thinner by drawing or rolling, the pinholes formed in the metal layer with good solder corrosion resistance will be crushed and the ultra-fine core wire will be made thinner. The quality of the coating on the core wire is improved, and corrosion of the ultra-fine core wire is more reliably prevented.
また、耐ハンダ溶食性の良好な金属層の上に、錫又は鉛
−線径ハンダから成るハンダ付け性を高める金属層を形
成すれば、極細電線のハンダ付け性が著しく向上すると
共に、耐ハンダ溶食性の良好な金属層として、酸化被膜
の形成によってハンダ付け性が低下するクロム等を用い
ても、良好なハンダ付けが得られる。In addition, if a metal layer that improves solderability made of tin or lead wire diameter solder is formed on a metal layer that has good solder corrosion resistance, the solderability of ultra-fine electric wires will be significantly improved, and the solder resistance will also improve. Even if chromium or the like, which deteriorates solderability due to the formation of an oxide film, is used as the metal layer with good corrosion resistance, good soldering can be obtained.
以下、本発明を図面に示す実施例に基づいて具体的に説
明する。Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings.
第１図は本発明による極細電線の一例を示す断面図、第
２図は他の実施例を示す断面図である。FIG. 1 is a sectional view showing an example of the ultrafine electric wire according to the present invention, and FIG. 2 is a sectional view showing another embodiment.
第１図に示す極細電線りは、電気銅又は無酸素銅から成
る極細芯線Ｓの表面に、耐ハンダ溶食性の良好な金属層
１が形成され、その金属層１の上に電気的絶縁被膜Ｚが
コーティングされている。The ultra-fine electric wire shown in FIG. 1 has a metal layer 1 with good solder corrosion resistance formed on the surface of an ultra-fine core wire S made of electrolytic copper or oxygen-free copper, and an electrically insulating coating on the metal layer 1. Z is coated.
耐ハンダ熔食性の良好な金属層１は、例えば、銅より融
点が高くハンダ浴への溶出が少なく、空気中においで酸
化被膜ができにくく、さらにハンダ付け性も良好な、ニ
ッケル又はニッケルー鉄。The metal layer 1 having good solder corrosion resistance is made of, for example, nickel or nickel-iron, which has a higher melting point than copper, is less eluted into the solder bath, is less likely to form an oxide film in the air, and has good solderability.
ニッケルーコバルト等のニッケル合金で形成され、電気
メツキ法、真空蒸着法、スパッタリング又はイオンプレ
ーディング法等によって、極細芯線Ｓの表面にコーティ
ングされる。It is formed of a nickel alloy such as nickel-cobalt, and is coated on the surface of the ultrafine core wire S by electroplating, vacuum evaporation, sputtering, ion plating, or the like.
ここで、電気銅から成る線径０．５鶴の極細芯線Ｓに、
ニッケルを電気メツキ法によってコーティングする場合
について説明すると、まず、リコイラーなどの繰り出し
装置から巻き出された極細芯線Ｓを電気メツキ装置内の
メツキ浴に浸漬させて厚さ０．１ｗｍのニッケルから成
る金属層１を形成する。この際に用いられるメツキ浴と
しては、極細芯線Ｓに対する内部応力が少なく、高速メ
ツキが可能な、硼ぶつ化ニッケル浴又はスルファミン酸
ニッケル浴が通している。Here, an ultra-fine core wire S made of electrolytic copper and having a wire diameter of 0.5 mm,
To explain the case of coating nickel by the electroplating method, first, the ultrafine core wire S unwound from a feeding device such as a recoiler is immersed in a plating bath in an electroplating device to coat a metal made of nickel with a thickness of 0.1 wm. Form layer 1. The plating bath used in this case is a nickel boride bath or a nickel sulfamate bath, which has little internal stress on the ultrafine core wire S and can perform high-speed plating.
続いて、金属層１を形成した極細芯線Ｓを６００℃のア
ルゴン等の非酸化雰囲気中で焼鈍加工して軟化させると
共に電気抵抗値を安定化させた後、断面縮小率６０％の
引抜加工を施す。Next, the ultrafine core wire S on which the metal layer 1 was formed was annealed in a non-oxidizing atmosphere such as argon at 600°C to soften it and stabilize the electrical resistance value, and then subjected to drawing processing with a cross-sectional reduction rate of 60%. give
そして、前記の焼鈍加工と引抜加工とを数回繰り返して
、最終的に線径を０．０５ｍｍまで細径化した後、用途
に応してポリウレタン、ポリエステル。Then, the above-mentioned annealing process and drawing process are repeated several times to finally reduce the wire diameter to 0.05 mm, and then the wire is made into polyurethane or polyester depending on the purpose.
ポリアミド、ポリエステルイミド等を１０〜２０ミクロ
ンメータの厚さで焼付塗装して電気的絶縁被膜Ｚをコー
ティングする。An electrically insulating film Z is coated by baking polyamide, polyesterimide, etc. to a thickness of 10 to 20 microns.
以上が、本発明による極細電線りの一例構成であり、次
に本発明による線径０．０５ｆｉの極細電線と、同径の
従来の極細電線とをハンダ浴中に浸漬させて溶食の進み
具合を対照実験した結果について説明すると、３６０℃
に加熱した錫６０％−鉛４０％のハンダ浴中に従来の極
細電線を浸漬したところ、約１０秒間で殆ど溶食されて
しまうのに対して、本発明による極細電線は、１分間以
上浸漬させても殆ど溶食されることがなく、ニッケルか
ら成る金属層１を形成することが極細芯線Ｓのハンダ付
けによる溶食防止手段として効果的であることが確認さ
れた。The above is an example of the configuration of the ultra-fine electric wire according to the present invention.Next, the ultra-fine electric wire according to the present invention having a wire diameter of 0.05fi and a conventional ultra-fine electric wire of the same diameter are immersed in a solder bath to prevent corrosion. To explain the results of a control experiment, 360℃
When a conventional ultra-fine electric wire is immersed in a 60% tin-40% lead solder bath heated to a temperature of It was confirmed that the formation of the metal layer 1 made of nickel is effective as a means for preventing corrosion caused by soldering the ultra-fine core wire S.
なお、その後の実験により、耐ハンダ熔食性と導電性と
を両立させるには、金属層１の厚さを線径の１〜３％に
するのが望ましいことが判明している。Further, subsequent experiments have revealed that in order to achieve both solder corrosion resistance and conductivity, it is desirable to set the thickness of the metal layer 1 to 1 to 3% of the wire diameter.
また、前記の実施例のように、極細芯線Ｓの表面に金属
層１を形成した後に、引抜加工又は圧延加工を施すこと
によって、所望の線径を得ることができると共に、金属
層１を電気メツキした際に生しるピンホール等を潰して
、金属層１の付着不良部をなくすることができ、金属層
１の極細芯線Ｓに対するコーテイング品質が向上して、
溶食をより確実に防止することができる。Further, as in the above embodiment, by forming the metal layer 1 on the surface of the ultrafine core wire S and then performing drawing or rolling, a desired wire diameter can be obtained, and the metal layer 1 can be By crushing pinholes etc. that occur during plating, it is possible to eliminate areas with poor adhesion of the metal layer 1, and the quality of coating on the ultra-fine core wire S of the metal layer 1 is improved.
Erosion can be more reliably prevented.
なお、極細電線りの使用線径に比して、数倍乃至数十倍
の線径で金属層１を厚く形成して、これを引抜加工又は
圧延加工によって細径化するようにしてもよい。Note that the metal layer 1 may be formed thick with a wire diameter several to several tens of times larger than the wire diameter used for the ultra-fine electric wire, and the diameter may be reduced by drawing or rolling. .
また、ニッケル系金属の金属層１は、銅の５倍程度の引
張強さを持つため、同一線径の従来の極細電線に比較し
て約１０〜２０％の強化を図ることができ、コイルの自
動巻線作業等において断線しにくくすることができる。In addition, the metal layer 1 made of nickel-based metal has a tensile strength about five times that of copper, so it is possible to strengthen the coil by about 10 to 20% compared to conventional ultra-fine wires of the same wire diameter. This makes it difficult for wires to break during automatic wire winding work, etc.
なお、このように極細電線りに強度が要求される場合に
は、極細芯線Ｓとして、電気銅や無酸素銅に代えて錫入
り銅、クロム銅、銀入り銅、１ｉＪニツケル等の引張強
度の大きな高導電性銅合金を用いることもできる。In addition, when strength is required for the ultra-fine wire, use tin-containing copper, chromium-containing copper, silver-containing copper, 1iJ nickel, etc. with a high tensile strength as the ultra-fine core wire S instead of electrolytic copper or oxygen-free copper. Large highly conductive copper alloys can also be used.
次に、第２図に示す他の実施例について説明すると、極
細電線りは、極細芯線Ｓの表面に、前記実施例と同様の
耐ハンダ熔食性の良好な金属Ｎ１が形成され、当該金属
層１の表面にハンダ付け性を高める金属層２が形成され
、その上から電気的絶縁被膜Ｚがコーティングされてい
る。Next, another example shown in FIG. 2 will be described. In the ultra-fine electric wire, a metal N1 having good solder corrosion resistance similar to the above-mentioned example is formed on the surface of the ultra-fine core wire S, and the metal layer is A metal layer 2 for improving solderability is formed on the surface of the metal layer 1, and an electrically insulating film Z is coated thereon.
このハンダ付け性を高める金属層２は、錫、鉛−錫系ハ
ンダ、銅系金属、銀系金属又は金糸金属等で形成され、
金属層１と同様に、電気メツキ等の方法によって付着さ
れる。The metal layer 2 that improves solderability is formed of tin, lead-tin solder, copper metal, silver metal, gold thread metal, etc.
Like the metal layer 1, it is deposited by a method such as electroplating.
そして、このハンダ付け性を高める金属層２は、耐ハン
ダ熔食性の良好な金属層１をニッケル系金属で形成した
場合にはハンダ付け性をより向上させる働きをすると共
に、金属層１にニッケル系金属以外の金属を用いること
を可能にしている。The metal layer 2 that improves solderability works to further improve the solderability when the metal layer 1 having good solder corrosion resistance is formed of a nickel-based metal. This makes it possible to use metals other than the metals in the series.
即ち、耐ハンダ溶食性の良好な金属層１を形成する金属
材料として、ニッケル系金属のほかに、銅より融点の高
いクロム等が考えられるのであるが、クロム等は空気中
において酸化膜を形成し易く、そのためハンダ付け性が
低下するという欠点を有していたため、第１図に示した
実施例のように耐ハンダ溶食性の良好な金属層ｌに直接
ハンダ付けを行わなければならない形式の場合には、そ
のハンダ付け性の悪さからクロム等によって金属層１を
形成することは適当ではなかった。That is, in addition to nickel-based metals, chromium, etc., which has a higher melting point than copper, can be considered as a metal material for forming the metal layer 1 with good solder corrosion resistance, but chromium and the like form an oxide film in the air. However, as shown in the embodiment shown in Fig. 1, soldering must be performed directly on the metal layer l, which has good solder corrosion resistance. In some cases, it is not appropriate to form the metal layer 1 with chromium or the like because of its poor solderability.
しかし、本実施例のように、金属層１の上に、錫や鉛−
錫系ハンダ等から成るハンダ付け性を高める金属層２を
形成する場合には、金属層１のハンダ付け性の良し悪し
に拘わらず、極細電線りはハンダ付け性を高める金属層
２によって良好なハンダ付け性が付与されることとなり
、金属層１を形成する金属材料としてクロム等を採用す
ることができるようになった。However, as in this embodiment, tin or lead is added on the metal layer 1.
When forming a metal layer 2 that improves solderability made of tin-based solder, etc., regardless of whether the metal layer 1 has good solderability, the ultra-fine wire can be Since solderability is imparted to the metal layer 1, chromium or the like can now be used as the metal material for forming the metal layer 1.
そして、金属層Ｉをクロム等で形成することによって、
極細電線りの耐ハンダ溶食性や引張強度等の一層の向上
を期待することができる。Then, by forming the metal layer I with chromium or the like,
Further improvements in solder corrosion resistance, tensile strength, etc. of ultra-fine electric wires can be expected.
なお、ハンダ付け性を高める金属層２を形成した後に、
前述の実施例と同様に引抜加工又は圧延加工を施して所
望の線径とし、その後に電気的絶縁被膜Ｚをコーティン
グすることもできる。Note that after forming the metal layer 2 that improves solderability,
It is also possible to perform drawing or rolling to obtain a desired wire diameter in the same manner as in the above-mentioned embodiments, and then coat the wire with an electrically insulating film Z.
以上述べたように、本発明による極細電線は、銅又は銅
合金から成る極細芯線の表面に、二・７ケル、ニッケル
合金等から成る耐ハンダ溶食性の良好な金属層を形成し
ているため、ハンダ付けの際に極細芯線が熔食しに＜＜
、従来の極細電線のようにハンダ細りによって溶断する
おそれがないという優れた効果がある。As described above, the ultra-fine electric wire according to the present invention has a metal layer made of 2.7 Kel, nickel alloy, etc. with good solder corrosion resistance formed on the surface of the ultra-fine core wire made of copper or copper alloy. , because the ultra-fine core wire is corroded during soldering.
This has an excellent effect in that there is no risk of melting due to thinning of the solder, unlike conventional ultra-thin wires.
また、ハンダ付け作業を行う際に極細電線の溶断を防止
するために、従来のような厳密な作業管理を行う必要も
なく、ハンダ付け作業を行う者の作業負担が軽減される
とい効果もある。In addition, there is no need to perform strict work management as in the past in order to prevent ultra-thin wires from melting during soldering work, which has the effect of reducing the work burden on those performing soldering work. .
また、極細電線が熔食しにくいことから、ハンダ浴の温
度を高くすることができ、ハンダ付けの作業性も向上す
るという効果がある。Furthermore, since the ultra-fine electric wire is less likely to corrode, the temperature of the soldering bath can be increased, which has the effect of improving soldering workability.
さらに、耐ハンダ溶食性の良好な金属層を形成したこと
により、ハンダ付けによって溶断してしまう線径の限界
を従来より細くすることができ、また、引張強度も向上
することから、従来よりさらに細径化した極細電線を実
用に供することが可能となり、コイル等をより小型化す
ることができるという効果もある。Furthermore, by forming a metal layer with good solder corrosion resistance, the limit of the wire diameter that can be fused during soldering can be made smaller than before, and the tensile strength is also improved, making it even more effective than before. It becomes possible to put into practical use ultrafine electric wires with reduced diameters, and there is also the effect that coils and the like can be made more compact.
また、耐ハンダ溶食性の良好な金属層が形成された極細
芯線を引抜加工又は圧延加工によって細径化すれば、耐
ハンダ溶食性の良好な金属層に住じたピンホールなどが
潰され、極細芯線に対するコーテイング品質が向上して
、極細芯線の溶食がより確実に防止されるという効果も
ある。In addition, if the ultra-fine core wire on which a metal layer with good solder corrosion resistance is formed is made thinner by drawing or rolling, pinholes etc. that live in the metal layer with good solder corrosion resistance will be crushed. There is also the effect that the quality of coating on the ultra-fine core wire is improved and corrosion of the ultra-fine core wire is more reliably prevented.
なお、耐ハンダ溶食性の良好な金属層の上に、錫や鉛−
組径ハンダ等から成るハンダ付け性を高める金属層を形
成することにより、極細電線のハンダ付け性が著しく向
上する共に、耐ハンダ溶食性の良好な金属層をクロムや
鉄で形成することが可能になるという効果もある。In addition, on top of the metal layer with good solder corrosion resistance, tin or lead
By forming a metal layer that improves solderability made of assembled diameter solder, etc., the solderability of ultra-fine electric wires is significantly improved, and it is also possible to form a metal layer with good solder corrosion resistance using chromium or iron. It also has the effect of becoming
第１図は本発明による極細電線の一例を示す断面図、第
２図は本発明による他の実施例を示す断面図である。
符号の説明
Ｄ −極細電線、ｓ −極細芯線、
２〜 電気的絶縁被膜、
１−耐ハンダ溶食性の良好な金属層、
２−ハンダ付け性を高める金属層。FIG. 1 is a cross-sectional view showing an example of the ultrafine electric wire according to the present invention, and FIG. 2 is a cross-sectional view showing another embodiment according to the present invention. Explanation of symbols D - Extra-fine electric wire, s - Extra-fine core wire, 2 - Electrical insulating coating, 1 - Metal layer with good solder corrosion resistance, 2 - Metal layer that improves solderability.
Claims (1)
絶縁被膜（Ｚ）をコーティングした極細電線（Ｄ）にお
いて、前記極細芯線（Ｓ）の表面に耐ハンダ溶食性の良
好な金属層（１）が形成され、その金属層（１）の上か
ら前記絶縁被膜（Ｚ）がコーティングされたことを特徴
とする極細電線。 〔２〕 耐ハンダ溶食性の良好な金属層（１）が、ニッ
ケル又はニッケル合金で形成されている前記特許請求の
範囲第１項記載の極細電線。 〔３〕 耐ハンダ溶食性の良好な金属層（１）が形成さ
れた極細芯線（Ｓ）を引抜加工又は圧延加工によって細
径化した後、電気的絶縁被膜（Ｚ）がコーティングされ
る前記特許請求の範囲第１項記載の極細電線。 〔４〕 銅又は銅合金から成る極細芯線（Ｓ）に電気的
絶縁被膜（Ｚ）をコーティングした極細電線（Ｄ）にお
いて、前記極細芯線（Ｓ）の表面に耐ハンダ溶食性の良
好な金属層（１）が形成され、当該金属層（１）の表面
に錫、鉛−錫系ハンダ、銅系金属、銀系金属又は金系金
属から成るハンダ付け性を高める金属層（２）が形成さ
れ、その上から前記絶縁被膜（Ｚ）がコーティングされ
たことを特徴とする極細電線。 〔５〕 耐ハンダ溶食性の良好な金属層（１）が、ニッ
ケル、ニッケル合金又はクロムで形成されている前記特
許請求の範囲第４項記載の極細電線。[Scope of Claims] [1] In an ultra-fine electric wire (D) in which an ultra-fine core wire (S) made of copper or a copper alloy is coated with an electrically insulating film (Z), the surface of the ultra-fine core wire (S) is coated with a solder welding-resistant coating. An ultrafine electric wire characterized in that a metal layer (1) with good edibility is formed, and the metal layer (1) is coated with the insulating film (Z). [2] The ultrafine electric wire according to claim 1, wherein the metal layer (1) having good solder corrosion resistance is formed of nickel or a nickel alloy. [3] The above-mentioned patent, in which the ultrafine core wire (S) on which the metal layer (1) with good solder corrosion resistance is formed is reduced in diameter by drawing or rolling and then coated with an electrically insulating film (Z). The ultrafine electric wire according to claim 1. [4] In an ultra-fine electric wire (D) in which an ultra-fine core wire (S) made of copper or copper alloy is coated with an electrically insulating coating (Z), a metal layer with good solder corrosion resistance is provided on the surface of the ultra-fine core wire (S). (1) is formed, and a metal layer (2) for improving solderability made of tin, lead-tin solder, copper metal, silver metal, or gold metal is formed on the surface of the metal layer (1). , An ultrafine electric wire characterized in that the insulating film (Z) is coated thereon. [5] The ultrafine electric wire according to claim 4, wherein the metal layer (1) having good solder corrosion resistance is made of nickel, a nickel alloy, or chromium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30118990A JPH04174911A (en) | 1990-11-08 | 1990-11-08 | Extra fine electric wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30118990A JPH04174911A (en) | 1990-11-08 | 1990-11-08 | Extra fine electric wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04174911A true JPH04174911A (en) | 1992-06-23 |
Family
ID=17893848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30118990A Pending JPH04174911A (en) | 1990-11-08 | 1990-11-08 | Extra fine electric wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04174911A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002109965A (en) * | 2000-10-03 | 2002-04-12 | Furukawa Electric Co Ltd:The | Insulation sheath electric conductor |
| JP2008084874A (en) * | 2007-11-19 | 2008-04-10 | Furukawa Electric Co Ltd:The | Insulation-coated electric conductor |
| US20160351299A1 (en) * | 2014-02-26 | 2016-12-01 | Autonetworks Technologies, Ltd. | Stranded wire conductor and insulated wire |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460907A (en) * | 1987-09-01 | 1989-03-08 | Furukawa Electric Co Ltd | Conductor for extra-thin winding |
| JPH01147091A (en) * | 1987-12-03 | 1989-06-08 | Furukawa Electric Co Ltd:The | Conductor for superfine winding |
| JPH01213911A (en) * | 1988-02-23 | 1989-08-28 | Furukawa Electric Co Ltd:The | Conductor for ultrafine coil |
| JPH0221508A (en) * | 1988-07-08 | 1990-01-24 | Furukawa Electric Co Ltd:The | Conductor for minute wire winding |
| JPH02204919A (en) * | 1989-02-01 | 1990-08-14 | Furukawa Electric Co Ltd:The | Conductor for coil |
| JPH0398210A (en) * | 1989-09-08 | 1991-04-23 | Totoku Electric Co Ltd | Complex metal plating wire |
-
1990
- 1990-11-08 JP JP30118990A patent/JPH04174911A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460907A (en) * | 1987-09-01 | 1989-03-08 | Furukawa Electric Co Ltd | Conductor for extra-thin winding |
| JPH01147091A (en) * | 1987-12-03 | 1989-06-08 | Furukawa Electric Co Ltd:The | Conductor for superfine winding |
| JPH01213911A (en) * | 1988-02-23 | 1989-08-28 | Furukawa Electric Co Ltd:The | Conductor for ultrafine coil |
| JPH0221508A (en) * | 1988-07-08 | 1990-01-24 | Furukawa Electric Co Ltd:The | Conductor for minute wire winding |
| JPH02204919A (en) * | 1989-02-01 | 1990-08-14 | Furukawa Electric Co Ltd:The | Conductor for coil |
| JPH0398210A (en) * | 1989-09-08 | 1991-04-23 | Totoku Electric Co Ltd | Complex metal plating wire |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002109965A (en) * | 2000-10-03 | 2002-04-12 | Furukawa Electric Co Ltd:The | Insulation sheath electric conductor |
| JP4057230B2 (en) * | 2000-10-03 | 2008-03-05 | 古河電気工業株式会社 | Insulated conductor |
| JP2008084874A (en) * | 2007-11-19 | 2008-04-10 | Furukawa Electric Co Ltd:The | Insulation-coated electric conductor |
| US20160351299A1 (en) * | 2014-02-26 | 2016-12-01 | Autonetworks Technologies, Ltd. | Stranded wire conductor and insulated wire |
| US10147518B2 (en) * | 2014-02-26 | 2018-12-04 | Autonetworks Technologies, Ltd. | Stranded wire conductor and insulated wire |
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