JP2013025931A - Anti-corrosion agent, covered wire with terminal, and wiring harness - Google Patents

Anti-corrosion agent, covered wire with terminal, and wiring harness Download PDF

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Publication number
JP2013025931A
JP2013025931A JP2011157750A JP2011157750A JP2013025931A JP 2013025931 A JP2013025931 A JP 2013025931A JP 2011157750 A JP2011157750 A JP 2011157750A JP 2011157750 A JP2011157750 A JP 2011157750A JP 2013025931 A JP2013025931 A JP 2013025931A
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terminal
wire
electric wire
conductor
covered
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JP2011157750A
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Inventor
Masato Inoue
正人 井上
Hiroshi Sudo
博 須藤
Yukiyasu Sakamoto
幸康 坂本
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Priority to JP2011157750A priority Critical patent/JP2013025931A/en
Priority to PCT/JP2012/067293 priority patent/WO2013011846A1/en
Publication of JP2013025931A publication Critical patent/JP2013025931A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5216—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors

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  • Insulated Conductors (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an anti-corrosion agent which is excellent in coating properties and superior in anticorrosion performance, and to provide a covered wire with a terminal using the anti-corrosion agent, and a wiring harness.SOLUTION: An anti-corrosion agent contains a modified silicone-based moisture-curable adhesive resin. A covered wire with a terminal includes: a covered wire formed by covering conductors with insulation coating; and a terminal metal fitting connected to exposed conductors exposed on the terminal of the covered wire. Electric connection parts for electrically connecting the exposed conductors and the terminal metal fitting are covered with a cured material formed by curing of the modified silicone-based moisture-curable adhesive resin. A wiring harness includes the covered wire with the terminal.

Description

本発明は、防食剤、端子付き被覆電線およびワイヤーハーネスに関する。   The present invention relates to a corrosion inhibitor, a coated electric wire with a terminal, and a wire harness.

従来から、自動車等に配索するワイヤーハーネスを構成する電線としては、加工性に優れたタフピッチ銅の軟質材からなる電線素線を複数本撚り合わせた撚線または単芯線からなる芯線を、絶縁性材料からなる絶縁被覆層で被覆した被覆電線が用いられている。これらの電線の端末においては、絶縁被覆層を皮剥ぎすることで芯線を露出させた露出芯線（露出導体）に銅合金等からなる端子金具が接続される。電線に接続された端子金具はコネクタに挿入され係止される。   Conventionally, as a wire constituting a wire harness routed to an automobile or the like, a core wire composed of a stranded wire or a single core wire obtained by twisting a plurality of wire strands made of a soft material of tough pitch copper having excellent workability is insulated. A covered electric wire covered with an insulating coating layer made of a conductive material is used. At the end of these electric wires, a terminal fitting made of a copper alloy or the like is connected to an exposed core wire (exposed conductor) in which the core wire is exposed by peeling off the insulating coating layer. The terminal fitting connected to the electric wire is inserted into the connector and locked.

ワイヤーハーネスは、端子金具が接続された電線を複数本集束して、テープ巻きにより結束するか、丸チューブ、コルゲートチューブあるいはプロテクタで外装した状態にして自動車などに配索される。   A wire harness is arranged in an automobile or the like by converging a plurality of electric wires to which terminal fittings are connected and binding them by tape winding or by covering them with a round tube, a corrugated tube or a protector.

ワイヤーハーネスを、例えばエンジンルームのような被水領域や、高温となりやすい車室等に配索した場合、水や熱の影響を受けて、電線の芯線と端子金具とが接触状態で電気的に接続される電気接続部において錆が発生しやすくなる。   If the wiring harness is routed in a wet area such as an engine room or a passenger compartment that tends to be hot, the wire core and the terminal fitting are electrically in contact with each other under the influence of water and heat. Rust tends to occur at the connected electrical connection.

電線の芯線と端子金具との電気接続部における腐食を防止するために、例えば、特許文献１においては、電線端末に接続した端子金具を挿入するコネクタに防錆用グリースを注入する方法が提案されている。   In order to prevent corrosion at the electrical connection between the core wire of the electric wire and the terminal fitting, for example, Patent Document 1 proposes a method of injecting anti-rust grease into a connector into which the terminal fitting connected to the end of the electric wire is inserted. ing.

特開平５−１５９８４６号公報Japanese Patent Application Laid-Open No. 5-159646

近年、車両の軽量化という観点から、ワイヤーハーネスを構成する電線材料についても軽量化が求められている。このような要請から、電線導体の材料として、軽量で電気伝導性に優れたアルミニウムまたはアルミニウム合金製の電線を用いることが検討されている。   In recent years, from the viewpoint of reducing the weight of a vehicle, there has been a demand for reducing the weight of the wire material constituting the wire harness. From such a demand, it has been studied to use an aluminum or aluminum alloy wire that is lightweight and excellent in electrical conductivity as a material for the wire conductor.

しかしながら、端子金具としては、電気特性に優れた銅または銅合金材料からなるものを用いるのが一般的である。そのため、銅または銅合金製の端子金具と、アルミニウムまたはアルミニウム合金製の電線の芯線とが接触する電気接続部では、異種金属の接触による腐食が発生することがある。このような腐食は、電線と端子金具が相違する材料から構成されている場合には、同じ材料から構成されている場合よりも発生しやすい。そのため、電気接続部における腐食を確実に防ぐことのできる防食剤が必要となる。   However, as a terminal metal fitting, it is common to use what consists of copper or copper alloy material excellent in the electrical property. Therefore, corrosion due to contact of different metals may occur at the electrical connection portion where the terminal metal fitting made of copper or copper alloy and the core wire of the electric wire made of aluminum or aluminum alloy are in contact with each other. Such corrosion is more likely to occur when the electric wire and the terminal fitting are made of different materials than when they are made of the same material. Therefore, the anticorrosive which can prevent the corrosion in an electrical connection part reliably is needed.

しかしながら、上記特許文献１において提案されているグリースは、コネクタ内に密に注入しないと水の侵入を十分に防止することができない。防食効果を高めようとして、グリースの充填量を上げようとすると、本来防食の不要なところまでグリースが塗布されてしまうことになり、過度に充填すると、コネクタや電線のべたつきを招き、取り扱い性を低下させることとなる。このような事情から、グリース等よりも塗布性がよく防食性能に優れた防食剤が求められている。   However, the grease proposed in Patent Document 1 cannot sufficiently prevent water from entering unless the grease is injected into the connector closely. If you try to increase the amount of grease to increase the anticorrosion effect, the grease will be applied to the place where corrosion protection is not necessary, and if it is overfilled, it will cause stickiness of the connector and wires, and handleability will be increased. Will be reduced. Under such circumstances, there is a demand for an anticorrosive agent that has better coatability and better anticorrosion performance than grease and the like.

本発明は上記のような事情に基づいて完成されたものであって、塗布性がよく防食性能に優れた防食剤、これを用いた端子付き被覆電線およびワイヤーハーネスを提供することを目的とする。   This invention was completed based on the above situations, Comprising: It has an object of providing an anticorrosive agent with good coatability and excellent anticorrosion performance, a coated electric wire with a terminal using the same, and a wire harness. .

上記課題を解決るものとして本発明は、変性シリコーン系の湿気硬化型接着性樹脂を含むことを特徴とする防食剤である。   In order to solve the above problems, the present invention provides an anticorrosive agent comprising a modified silicone-based moisture-curable adhesive resin.

本発明の防食剤は変性シリコーン系の湿気硬化型接着性樹脂を含むので、防食性能を付与したい部分に塗布すると、塗布した部分に接着して硬化し、防水性能に優れた硬化物が形成される。その結果、本発明によれば、防錆グリースなどの従来品を使用するよりも、塗布性がよく、防食性能に優れた防食剤を提供することができる。   Since the anticorrosive agent of the present invention contains a modified silicone-based moisture-curable adhesive resin, when applied to a portion where anticorrosion performance is to be imparted, it is cured by adhering to the applied portion to form a cured product with excellent waterproof performance. The As a result, according to the present invention, it is possible to provide an anticorrosive having better coating properties and excellent anticorrosion performance than using conventional products such as rust preventive grease.

本発明の防食剤は、電線の導体と端子金具とを電気的に接続する電気接続部に適用することが好ましい。
このような構成とすると、電線の導体と端子金具とを電気的に接続する電気接続部における腐食の発生を防止することができ、接続信頼性を向上させることができる。 It is preferable that the anticorrosive agent of this invention is applied to the electrical connection part which electrically connects the conductor of an electric wire, and a terminal metal fitting.
With such a configuration, it is possible to prevent the occurrence of corrosion in the electrical connection portion that electrically connects the conductor of the electric wire and the terminal fitting, and to improve the connection reliability.

また、本発明は、導体を絶縁被覆で被覆してなる被覆電線と、前記被覆電線の端末において露出する露出導体に接続される端子金具と、を備え、前記露出導体と前記端子金具とを電気的に接続する電気接続部が、変性シリコーン系の湿気硬化型接着性樹脂の硬化により形成される硬化物により覆われていることを特徴とする端子付き被覆電線である。   The present invention also includes a covered electric wire formed by coating a conductor with an insulating coating, and a terminal fitting connected to an exposed conductor exposed at an end of the covered electric wire, and electrically connecting the exposed conductor and the terminal fitting. The electrically connected portion to be electrically connected is covered with a cured product formed by curing a modified silicone-based moisture-curable adhesive resin.

本発明によれば、塗布性がよく防食性能に優れた防食剤により優れた防食性能を付与された端子付き被覆電線を提供することができる。また、本発明によれば、露出導体と端子金具との電気接続部が、防食性能に優れた硬化物により覆われているので、電気接続部における腐食の発生を防止し、接続信頼性を向上させることができる。   ADVANTAGE OF THE INVENTION According to this invention, the coated electric wire with a terminal provided with the anticorrosion performance which was excellent by the anticorrosive which was excellent in applicability | paintability and excellent in anticorrosion performance can be provided. In addition, according to the present invention, since the electrical connection portion between the exposed conductor and the terminal fitting is covered with a cured product having excellent anticorrosion performance, the occurrence of corrosion in the electrical connection portion is prevented and the connection reliability is improved. Can be made.

本発明の端子付き被覆電線において、導体はアルミニウムまたはアルミニウム合金からなる素線を含み、端子金具は、銅または銅合金製材料からなる構成とするのが好ましい。
このような構成とすると、導体と端子金具の材料が相違する場合でも腐食の発生を防止できる。さらに、このような構成によれば、被覆電線を軽量化することができる。 In the covered electric wire with terminal of the present invention, the conductor preferably includes a strand made of aluminum or an aluminum alloy, and the terminal fitting is preferably made of copper or a copper alloy material.
With such a configuration, the occurrence of corrosion can be prevented even when the conductor and the terminal metal are made of different materials. Furthermore, according to such a structure, a covered electric wire can be reduced in weight.

また、本発明は、本発明の端子付き被覆電線を備えることを特徴とするワイヤーハーネスである。
本発明によれば、塗布性がよく防食性能に優れた防食剤により優れた防食性能を付与された端子付き被覆電線を備えるワイヤーハーネスを提供することができる。 Moreover, this invention is a wire harness provided with the covered electric wire with a terminal of this invention.
ADVANTAGE OF THE INVENTION According to this invention, a wire harness provided with the coated electric wire with a terminal to which the anticorrosive agent which was excellent in applicability | paintability and was excellent in anticorrosion performance was provided with the anticorrosion performance excellent in it can be provided.

本発明によれば、塗布性がよく防食性能に優れた防食剤、これを用いた端子付き被覆電線およびワイヤーハーネスを提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the applicability | paintability and the anticorrosive agent excellent in anticorrosion performance, the covered electric wire with a terminal using this, and a wire harness can be provided.

実施形態１で説明する端子付き電線を示した斜視図である。It is the perspective view which showed the electric wire with a terminal demonstrated in Embodiment 1. FIG. 図１のＡ−Ａ線における断面図である。It is sectional drawing in the AA of FIG.

＜実施形態１＞
以下、本発明の防食剤、本発明の端子付き被覆電線、本発明のワイヤーハーネスについて詳細に説明する。 <Embodiment 1>
Hereinafter, the anticorrosive agent of the present invention, the coated electric wire with terminal of the present invention, and the wire harness of the present invention will be described in detail.

（防食剤）
本発明の防食剤は、変性シリコーン系の湿気硬化型接着性樹脂（以下、変性シリコーン樹脂という）を含むことを特徴とする。 (Anticorrosive)
The anticorrosive agent of the present invention includes a modified silicone-based moisture-curable adhesive resin (hereinafter referred to as a modified silicone resin).

変性シリコーン樹脂は一液硬化型でも二液硬化型のいずれでもよいが、混合工程が不要で生産性に優れるという観点から一液硬化型が好ましい。   The modified silicone resin may be either a one-component curable type or a two-component curable type, but the one-component curable type is preferable from the viewpoint that a mixing step is unnecessary and productivity is excellent.

変性シリコーン樹脂の具体例としては、エポキシ変性シリコーン樹脂、アクリル変性シリコーン樹脂等があげられる。   Specific examples of the modified silicone resin include an epoxy-modified silicone resin and an acrylic-modified silicone resin.

本発明の防食剤は、変性シリコーン樹脂単独で構成されていてもよいし、２種以上の変性シリコーン樹脂を混合した混合物で構成されていてもよい。また、本発明の防食剤には、必要に応じて、物性を損なわない範囲で、添加剤、他のポリマ等が混合されていてもよい。   The anticorrosive agent of the present invention may be composed of a modified silicone resin alone or may be composed of a mixture obtained by mixing two or more kinds of modified silicone resins. Moreover, the anticorrosive of this invention may be mixed with an additive, another polymer, etc. in the range which does not impair a physical property as needed.

防食剤に混合される添加剤としては、一般的に樹脂成形材料に使用される添加剤であれば特に限定されるものではない。具体的には、例えば、無機充填剤、酸化防止剤、金属不活性化剤（銅害防止剤）、紫外線吸収剤、紫外線隠蔽剤、難燃助剤、加工助剤（滑剤、ワックスなど）、カーボンやその他の着色用顔料などを挙げることができる。   The additive mixed with the anticorrosive is not particularly limited as long as it is an additive generally used for a resin molding material. Specifically, for example, inorganic fillers, antioxidants, metal deactivators (copper damage inhibitors), UV absorbers, UV masking agents, flame retardant aids, processing aids (lubricants, waxes, etc.), Examples thereof include carbon and other coloring pigments.

本発明の防食剤に含まれる変性シリコーン樹脂は、湿気硬化型の接着性樹脂なので、防食剤塗布後、空気中の水分と反応して硬化し所定の機械的強度を有する硬化皮膜１６（硬化物）を形成する。   Since the modified silicone resin contained in the anticorrosive agent of the present invention is a moisture-curing adhesive resin, it is cured by reacting with moisture in the air after application of the anticorrosive agent and has a predetermined mechanical strength (cured product). ).

（端子付き被覆電線）
次に、本発明の端子付き被覆電線１０について説明する。
図１および図２に示すように、端子付き被覆電線１０は、導電性材料からなる導体１８の外周に絶縁被覆２０が被覆されてなる被覆電線１２と、被覆電線１２の導体１８の端末に接続された端子金具１４とを備える。 (Coated wire with terminal)
Next, the terminal-equipped covered electric wire 10 of the present invention will be described.
As shown in FIG. 1 and FIG. 2, the coated electric wire with terminal 10 is connected to the coated electric wire 12 in which the outer periphery of the conductor 18 made of a conductive material is coated with the insulating coating 20 and the terminal of the conductor 18 of the coated electric wire 12. Terminal fittings 14 are provided.

被覆電線１２の端末では、絶縁被覆２０が剥離除去されて導体１８が露出しており、この露出した導体１８（露出導体１８Ａ）の端末に端子金具１４が接続されている。導体１８は、複数本の素線１８ａが撚り合わされてなる撚線からなる。このような構成の場合、撚線は、１種の金属素線より構成されていても良いし、２種以上の金属素線より構成されていてもよい。また、撚線は、金属素線以外に、有機繊維よりなる素線などを含んでいても良い。ここで、１種の金属素線より構成されるとは、撚線を構成する全ての金属素線が同じ金属材料からなることをいい、２種以上の金属素線より構成されるとは、撚線中に互いに異なる金属材料よりなる金属素線を含んでいることをいう。撚線中には、被覆電線１２を補強する補強線（テンションメンバ）等が含まれていてもよい。   At the end of the covered electric wire 12, the insulating coating 20 is peeled and removed to expose the conductor 18, and the terminal fitting 14 is connected to the end of the exposed conductor 18 (exposed conductor 18A). The conductor 18 is formed of a stranded wire formed by twisting a plurality of strands 18a. In the case of such a configuration, the stranded wire may be composed of one type of metal strand, or may be composed of two or more types of metal strand. Moreover, the twisted wire may contain the strand etc. which consist of organic fibers other than a metal strand. Here, being composed of one kind of metal strand means that all the metal strands constituting the stranded wire are made of the same metal material, and being composed of two or more types of metal strands. It means that the stranded wire includes metal strands made of different metal materials. The stranded wire may include a reinforcing wire (tension member) that reinforces the covered electric wire 12.

撚線を構成する金属素線の材料としては、銅、銅合金、アルミニウム、アルミニウム合金、もしくはこれらの材料に各種メッキが施された材料などを例示することができる。また、補強線として機能する金属素線の材料としては、銅合金、チタン、タングステン、ステンレスなどを例示することができる。また、補強線として機能する有機繊維としては、ケブラーなどを挙げることができる。   Examples of the material of the metal wire constituting the stranded wire include copper, a copper alloy, aluminum, an aluminum alloy, or a material obtained by applying various platings to these materials. Examples of the material of the metal strand that functions as the reinforcing wire include copper alloy, titanium, tungsten, and stainless steel. Examples of the organic fiber that functions as a reinforcing wire include Kevlar.

撚線を構成する金属素線としては、軽量化の観点からアルミニウムまたはアルミニウム合金からなる素線を含むものが好ましい。   As a metal strand which comprises a stranded wire, what contains the strand which consists of aluminum or aluminum alloy from a viewpoint of weight reduction is preferable.

絶縁被覆２０の材料としては、例えば、ゴム、ポリオレフィン、ＰＶＣ、熱可塑性エラストマーなどを挙げることができる。これらは単独で用いても良いし、２種以上混合して用いても良い。絶縁被覆２０の材料中には、適宜、各種添加剤が添加されていても良い。添加剤としては、難燃剤、充填剤、着色剤等を挙げることができる。   Examples of the material for the insulating coating 20 include rubber, polyolefin, PVC, and thermoplastic elastomer. These may be used alone or in combination of two or more. Various additives may be appropriately added to the material of the insulating coating 20. Examples of the additive include a flame retardant, a filler, a colorant and the like.

端子金具１４は、図１に示すように、図示しない相手側端子と接続されるタブ状の接続部１４Ｃと、接続部１４Ｃの基端より延設形成され、被覆電線１２の電線導体１８の端末を加締める一対のワイヤバレル１４Ａ，１４Ａと、ワイヤバレル１４Ａ，１４Ａよりさらに延設形成され、被覆電線１２の端末の絶縁体２０を加締める一対のインシュレーションバレル１４Ｂ，１４Ｂとを備えている。   As shown in FIG. 1, the terminal fitting 14 is formed to extend from a tab-like connection portion 14 </ b> C connected to a mating terminal (not shown) and a base end of the connection portion 14 </ b> C, and is a terminal of the wire conductor 18 of the covered wire 12. A pair of wire barrels 14A, 14A and a pair of insulation barrels 14B, 14B that extend from the wire barrels 14A, 14A and crimp the insulator 20 at the end of the covered electric wire 12.

端子金具１４の母材材料としては、一般的に用いられる黄銅の他、各種銅合金や銅などを挙げることができる。端子金具１４の表面の一部（例えば接点）もしくは全体に、錫、ニッケル、金などの各種金属によりメッキが施されていてもよい。   Examples of the base material of the terminal fitting 14 include various copper alloys and copper in addition to brass that is generally used. A part (for example, a contact) or the entire surface of the terminal fitting 14 may be plated with various metals such as tin, nickel, and gold.

端子金具１４と、被覆電線１２の端末において露出している露出導体１８Ａとが接触状態に接続される電気接続部１９は、防食剤の硬化皮膜１６（硬化物１６の一例）により覆われている。   The electrical connection portion 19 where the terminal fitting 14 and the exposed conductor 18A exposed at the end of the covered electric wire 12 are connected in contact is covered with a cured film 16 (an example of the cured product 16) of the anticorrosive agent. .

具体的には防食剤の硬化により形成される硬化皮膜１６が、端子金具１４の接続部１４Ｃの基端と導体１８の先端との境界より図１における手前側から、端子金具１４のインシュレーションバレル１４Ｂ，１４Ｂと絶縁被覆２０との境界より後方側の領域（ニ点鎖線で囲んだ領域）を覆っている。つまり、端子金具１４の接続部１４Ｃの基端と導体１８の先端との境界、露出芯線１８Ａ、端子金具１４のワイヤバレル１４Ａ，１４Ａとインシュレーションバレル１４Ｂ，１４Ｂ、およびインシュレーションバレル１４Ｂ，１４Ｂと絶縁被覆２０との境界は硬化皮膜１６により覆われている。   Specifically, the cured film 16 formed by curing the anticorrosive agent is an insulation barrel of the terminal fitting 14 from the front side in FIG. 1 from the boundary between the base end of the connecting portion 14C of the terminal fitting 14 and the tip of the conductor 18. A region (region surrounded by a two-dot chain line) on the rear side of the boundary between 14B and 14B and the insulating coating 20 is covered. That is, the boundary between the base end of the connecting portion 14C of the terminal fitting 14 and the tip of the conductor 18, the exposed core 18A, the wire barrels 14A and 14A of the terminal fitting 14 and the insulation barrels 14B and 14B, and the insulation barrels 14B and 14B. The boundary with the insulating coating 20 is covered with a cured film 16.

硬化皮膜１６を形成するために用いる防食剤は、導体１８の材料と端子金具１４の材料との組み合わせ等を考慮して適宜選択することができる。硬化皮膜１６の厚さは、適宜調整すれば良いが、０．０１ｍｍ〜０．１ｍｍの範囲内であるのが好ましい。硬化皮膜１６の厚さが厚すぎると、端子金具１４をコネクタへ挿入し難くなり、硬化皮膜１６の厚さが薄すぎると、防食効果が低下しやすくなる。   The anticorrosive used for forming the cured film 16 can be appropriately selected in consideration of the combination of the material of the conductor 18 and the material of the terminal fitting 14. The thickness of the cured film 16 may be adjusted as appropriate, but is preferably in the range of 0.01 mm to 0.1 mm. If the thickness of the cured film 16 is too thick, it is difficult to insert the terminal fitting 14 into the connector, and if the thickness of the cured film 16 is too thin, the anticorrosion effect tends to be lowered.

防食剤の塗布は、被覆電線１２の端末に端子金具１４を加締めて導体１８と端子金具１４とを接続した後に実行する。本実施形態では、防食剤を、導体１８と端子金具１４とを接続する電気接続部１９の表面（図１および図２における上側の面）に塗布する。詳しくは、防食剤は、絶縁被覆２０の端末の表面と、インシュレーションバレル１４Ｂ，１４Ｂの表面と、ワイヤバレル１４Ａ，１４Ａの表面と、露出導体１８Ａの表面と、端子金具１４の接続部１４Ｃの基端の表面とに塗布される。これにより、図２に示すように、導体１８と端子金具１４との電気接続部１９の表面に硬化皮膜１６が形成される。   The application of the anticorrosive agent is performed after the terminal fitting 14 is crimped to the end of the covered electric wire 12 to connect the conductor 18 and the terminal fitting 14. In the present embodiment, the anticorrosive agent is applied to the surface (the upper surface in FIGS. 1 and 2) of the electrical connection portion 19 that connects the conductor 18 and the terminal fitting 14. Specifically, the anticorrosive agent is formed on the surface of the terminal of the insulating coating 20, the surfaces of the insulation barrels 14B and 14B, the surfaces of the wire barrels 14A and 14A, the surface of the exposed conductor 18A, and the connection portion 14C of the terminal fitting 14. Applied to the proximal surface. Thereby, as shown in FIG. 2, a cured film 16 is formed on the surface of the electrical connection portion 19 between the conductor 18 and the terminal fitting 14.

なお、電気的な接続に影響を与えないのであれば、端子金具１４のワイヤバレル１４Ａ，１４Ａから突出するタブ状の接続部１４Ｃ，１４Ｃの裏面側（電線載置面とは反対側の面）、ワイヤバレル１４Ａ，１４Ａおよびインシュレーションバレル１４Ｂ，１４Ｂの裏面側にも硬化皮膜１６を形成しても良い。   If the electrical connection is not affected, the back surface side of the tab-like connection portions 14C and 14C protruding from the wire barrels 14A and 14A of the terminal fitting 14 (surface opposite to the wire placement surface). The cured film 16 may also be formed on the back surfaces of the wire barrels 14A and 14A and the insulation barrels 14B and 14B.

防食剤を塗布するにあたっては、滴下、塗布、押出などの方法を用いることができる。また、防食剤を塗布するにあたっては、必要に応じ、加熱冷却等を行ってもよい。   In applying the anticorrosive, methods such as dropping, coating, and extrusion can be used. Moreover, when applying an anticorrosive agent, you may heat-cool etc. as needed.

本発明の防食剤は、硬化後は固化するので、取り扱いの際にべたつくおそれもなく、防食剤を塗布した部分に長期にわたって硬化皮膜を定着させることができる。その結果、本発明の防食剤を用いた端子付き被覆電線１０においては、長期にわたり防食効果を維持することができる。   Since the anticorrosive agent of the present invention is solidified after curing, there is no risk of stickiness during handling, and the cured film can be fixed on the portion where the anticorrosive agent is applied over a long period of time. As a result, in the coated electric wire with terminal 10 using the anticorrosive agent of the present invention, the anticorrosive effect can be maintained over a long period of time.

防食剤として湿気硬化型樹脂のみからなる防食剤を用いる場合、防食剤が空気中の水分と反応して、硬化して硬化皮膜１６が形成されるので、防食剤塗布後に硬化皮膜１６を形成するための作業は特に必要ではないが、本発明の防食剤に熱硬化性樹脂やＵＶ硬化性樹脂、電子線硬化性樹脂等が含まれている場合には、用いた樹脂などに対応する熱や紫外線（ＵＶ）や電子線（電子線やガンマ線）を付与するなどの硬化処理を行ってもよい。   When an anticorrosive agent composed only of a moisture curable resin is used as the anticorrosive agent, the anticorrosive agent reacts with moisture in the air and cures to form a cured film 16, so that the cured film 16 is formed after the anticorrosive agent is applied. However, when the anticorrosive agent of the present invention contains a thermosetting resin, a UV curable resin, an electron beam curable resin, or the like, the heat corresponding to the resin used, etc. Curing treatment such as application of ultraviolet rays (UV) or electron beams (electron beams or gamma rays) may be performed.

（ワイヤーハーネス）
本発明のワイヤーハーネスは、本発明の端子付き被覆電線１０を含み、複数本の被覆電線を束ねたものから構成される。ワイヤーハーネスにおいては、ハーネス中に含まれる被覆電線のうちの一部が本発明の端子付き被覆電線１０であってもよいし、全てが本発明の端子付き被覆電線１０であってもよい。 (Wire Harness)
The wire harness of the present invention includes the terminal-coated covered electric wire 10 of the present invention and is configured by bundling a plurality of covered electric wires. In the wire harness, a part of the covered electric wire included in the harness may be the covered electric wire 10 with a terminal of the present invention, or all may be the covered electric wire 10 with a terminal of the present invention.

ワイヤーハーネスにおいて、複数本の被覆電線は、テープ巻きにより結束されていても良いし、あるいは、丸チューブ、コルゲートチューブ、プロテクタ等の外装部品により外装されていてもよい。   In the wire harness, the plurality of covered electric wires may be bundled by tape winding, or may be packaged by an exterior component such as a round tube, a corrugated tube, or a protector.

本発明のワイヤーハーネスは、自動車等の車両に配索されるものとして好適であり、特に、被水領域のエンジンルームや車内に配索されるものとして好適である。このような場所では、熱および水の影響を受けやすいため、導体１８と端子金具１４との電気接続部１９に錆が発生しやすくなるが、本発明のワイヤーハーネスは、本発明の端子付き被覆電線１０を備えるので、導体１８と端子金具１４との電気接続部１９における錆の発生を効果的に抑えることができる。   The wire harness of the present invention is suitable for being routed in a vehicle such as an automobile, and is particularly suitable for being routed in an engine room or a vehicle in a wet area. In such a place, since it is easy to be affected by heat and water, rust is likely to occur in the electrical connection portion 19 between the conductor 18 and the terminal fitting 14, but the wire harness of the present invention is covered with the terminal-coated sheath of the present invention. Since the electric wire 10 is provided, the generation of rust in the electrical connection portion 19 between the conductor 18 and the terminal fitting 14 can be effectively suppressed.

＜実施例＞
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よって限定されるものではない。 <Example>
EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited by these Examples.

１．被覆電線の作製
ポリ塩化ビニル（重合度１３００）１００質量部に対して、可塑剤としてジイソノニルフタレート４０質量部、充填剤として重炭酸カルシウム２０質量部、安定剤としてカルシウム亜鉛系安定剤５質量部をオープンロールにより１８０℃で混合し、ペレタイザーにてペレット状に成形することにより、ポリ塩化ビニル組成物を調製した。 1. Preparation of covered electric wire For 100 parts by mass of polyvinyl chloride (degree of polymerization 1300), 40 parts by mass of diisononyl phthalate as a plasticizer, 20 parts by mass of calcium bicarbonate as a filler, 5 parts by mass of calcium zinc-based stabilizer as a stabilizer A polyvinyl chloride composition was prepared by mixing at 180 ° C. with an open roll and molding into pellets with a pelletizer.

次いで、５０ｍｍ押出機を用いて、上記得られたポリ塩化ビニル組成物を、アルミ合金線を７本撚り合わせたアルミニウム合金撚線よりなる導体（断面積０．７５ｍｍ）の周囲に０．２８ｍｍ厚で押出被覆した。これにより被覆電線（ＰＶＣ電線）を作製した。   Next, using a 50 mm extruder, the polyvinyl chloride composition obtained above was 0.28 mm thick around a conductor (cross-sectional area 0.75 mm) made of an aluminum alloy twisted wire in which seven aluminum alloy wires were twisted together. And extrusion coated. This produced the covered electric wire (PVC electric wire).

２．端子付き被覆電線の作製
１．で作製した被覆電線の端末を皮剥ぎして導体を露出させた後、自動車用として汎用されている黄銅製のオス形状の端子金具（タブ幅０．６４ｍｍ）を被覆電線の端末に加締め圧着した。 2. Production of covered electric wire with terminal After stripping the end of the covered wire produced in step 1 to expose the conductor, crimping and crimping a brass male terminal fitting (tab width 0.64 mm) widely used for automobiles to the end of the covered wire did.

次いで、被覆電線の露出導体と端子金具との電気接続部に、下記の各種の防食剤を塗布して、露出導体および端子金具のバレルを各種の防食剤により被覆した。これにより、端子付き被覆電線を作製した。なお、各種の防食剤は、２３０℃に加熱して液状にし、厚さ０．０５ｍｍで塗布した。   Next, the following various anticorrosive agents were applied to the electrical connection portions between the exposed conductors of the covered wires and the terminal fittings, and the exposed conductors and the barrels of the terminal fittings were covered with the various anticorrosive agents. Thereby, the covered electric wire with a terminal was produced. Various anticorrosives were heated to 230 ° C. to form a liquid and applied at a thickness of 0.05 mm.

（実施例１）
アクリル変性シリコーン樹脂［セメダイン（株）製、スーパーＸ Ｎｏ８００８］
（実施例２）
エポキシ変性シリコーン樹脂［セメダイン（株）製、弾性接着剤 ＰＭ１６５］
（比較例１）
シアノアクリレート系樹脂［東亜合成（株）製、アロンアルファ（登録商標）ゼリー状」］
（比較例２）
酢酸ビニルエマルジョン系樹脂［コニシ（株）製、ボンド（登録商標）木工用］
（比較例３）
クロロプレン樹脂［セメダイン（株）製、速乾Ｇ］ Example 1
Acrylic-modified silicone resin [Cemedine Co., Ltd., Super X No8008]
(Example 2)
Epoxy-modified silicone resin [made by Cemedine Co., Ltd., elastic adhesive PM165]
(Comparative Example 1)
Cyanoacrylate resin [Toa Gosei Co., Ltd., Aron Alpha (registered trademark) jelly]]
(Comparative Example 2)
Vinyl acetate emulsion resin [manufactured by Konishi Co., Ltd., Bond (registered trademark) for woodworking]
(Comparative Example 3)
Chloroprene resin [Chemedine Co., Ltd., Quick Dry G]

３．評価方法
各種防食剤を塗布した端子付き被覆電線について、防食性能の評価を以下の方法により行った。
（１）防食性能
ＡＳＴＭ Ｂ１１７に規定される腐食試験（３５℃雰囲気中で５重量％の塩水噴霧）を９６時間実施し、試験終了後の端子と電線の導体間の定電圧定電流抵抗を測定した（測定条件：２０±５ｍＶ、１０±０．５ｍＡを通電）。
抵抗値が１０ｍΩ未満であった場合を「○」とし、１０ｍΩ以上であった場合を「×」とし、結果を表１に示した。 3. Evaluation method About the coated electric wire with a terminal which apply | coated various anticorrosive agents, the anticorrosion performance was evaluated by the following method.
(1) Corrosion protection performance Corrosion test (5% by weight salt spray in 35 ° C atmosphere) specified in ASTM B117 is conducted for 96 hours, and the constant voltage and constant current resistance between the terminal and the conductor of the electric wire after the test is measured. (Measurement conditions: 20 ± 5 mV, 10 ± 0.5 mA energized).
When the resistance value was less than 10 mΩ, “◯” was assigned, and when the resistance value was 10 mΩ or more, “X” was given. The results are shown in Table 1.

（２）防食剤の剥がれ
ＡＳＴＭ Ｂ１１７に規定される腐食試験（３５℃雰囲気中で５重量％の塩水噴霧）を９６時間実施し、試験終了後の資料を目視により観察し、防食剤の剥がれが認められなかったものを「○」とし、防食剤の剥がれが認められたものを「×」とし、結果を表１に示した。 (2) Anticorrosive peeling The corrosion test (5% by weight salt spray in 35 ° C atmosphere) specified in ASTM B117 is conducted for 96 hours. Those that were not recognized were marked with “◯”, those with the anticorrosive peeled off were marked with “x”, and the results are shown in Table 1.

Figure 2013025931
Figure 2013025931

（３）結果と考察
表１の結果から、比較例１〜３においては用いた防食剤が、本発明の規定外であるため、防食剤の剥がれが認められ、防食性能も劣っていた。 (3) Results and Discussion From the results of Table 1, since the anticorrosive used in Comparative Examples 1 to 3 was outside the scope of the present invention, peeling of the anticorrosive was observed and the anticorrosion performance was also inferior.

これらに対し、実施例１および２の端子付き被覆電線は、黄銅製の端子金具とアルミニウム合金製の撚線からなる導体を備える被覆電線とを備えており、電気接続部においては銅とアルミニウムという異種金属が接触しているにもかかわらず、防食剤の硬化物が十分に密着しており、優れた防食性を有していた。   On the other hand, the covered electric wire with a terminal of Examples 1 and 2 is provided with a covered electric wire provided with a brass terminal fitting and a conductor made of an aluminum alloy stranded wire, and is called copper and aluminum in the electrical connection portion. In spite of contact with different metals, the cured product of the anticorrosive agent was sufficiently adhered and had excellent anticorrosive properties.

これらの結果から、本発明の防食剤によれば、優れた防食性能を付与することができるということがわかった。   From these results, it was found that the anticorrosive agent of the present invention can provide excellent anticorrosion performance.

＜他の実施形態＞
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
（１）上記実施形態では、端子付き被覆電線１０の端子金具１４として、タブ状の接続部１４Ｃを有するオス端子の例を示したが、これに限定されるものではない。例えば、メス端子や音叉端子などであってもよい。また、端子金具１４は、インシュレーションバレル１４Ｂを有しないで、ワイヤバレル１４Ａのみで圧着されるものであってもよい。さらに、導体１２と端子金具１４との接続方法としては、バレルによる圧着に限られず、圧接抵抗溶接、超音波溶接、ハンダ付け等の方法であっても良い。
（２）また、上記実施形態においては、撚線よりなる導体１８が示されているが、導体１８は単芯線であっても良い。
（３）上記実施例では、市販品の湿気硬化型接着性樹脂から構成される防食剤を示したが、合成により作製した変性シリコーン系の湿気硬化型接着性樹脂を含む防食剤であってもよい。
（４）上記実施例では端子付き被覆電線として、黄銅製の端子金具とアルミニウム合金製の撚線からなる導体を備えるものを示したが、黄銅製の端子金具と銅または銅合金製の導体とを備える端子付き被覆電線であってもよい。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) Although the example of the male terminal which has the tab-shaped connection part 14C was shown as the terminal metal fitting 14 of the covered electric wire 10 with a terminal in the said embodiment, it is not limited to this. For example, a female terminal or a tuning fork terminal may be used. Moreover, the terminal metal fitting 14 may not be provided with the insulation barrel 14B but may be crimped only by the wire barrel 14A. Furthermore, the connection method between the conductor 12 and the terminal fitting 14 is not limited to the pressure bonding by the barrel, and may be a method such as pressure resistance welding, ultrasonic welding, or soldering.
(2) Moreover, in the said embodiment, although the conductor 18 consisting of a twisted wire is shown, the conductor 18 may be a single core wire.
(3) In the above-described embodiment, an anticorrosion agent composed of a commercially available moisture-curable adhesive resin is shown. However, even if it is an anticorrosive agent containing a modified silicone-based moisture-curable adhesive resin prepared by synthesis, Good.
(4) In the above embodiment, as the covered electric wire with a terminal, a conductor having a brass terminal fitting and a conductor made of an aluminum alloy stranded wire is shown. However, a brass terminal fitting and a copper or copper alloy conductor are provided. It may be a covered electric wire with a terminal.

１０…端子付き被覆電線
１２…被覆電線
１４…端子金具
１６…防食剤の硬化皮膜（硬化物）
１８…導体
１８Ａ…露出導体
１９…電気接続部
２０…絶縁被覆 DESCRIPTION OF SYMBOLS 10 ... Coated electric wire with a terminal 12 ... Coated electric wire 14 ... Terminal metal fitting 16 ... Cured film (cured material) of anticorrosive
18 ... conductor 18A ... exposed conductor 19 ... electrical connection 20 ... insulation coating

Claims (5)

変性シリコーン系の湿気硬化型接着性樹脂を含むことを特徴とする防食剤。 An anticorrosive comprising a modified silicone-based moisture-curable adhesive resin. 電線の導体と端子金具とを電気的に接続する電気接続部に適用することを特徴とする請求項１に記載の防食剤。 The anticorrosive agent according to claim 1, wherein the anticorrosive agent is applied to an electrical connection portion that electrically connects a conductor of a wire and a terminal fitting. 導体を絶縁被覆で被覆してなる被覆電線と、前記被覆電線の端末において露出する露出導体に接続される端子金具と、を備え、
前記露出導体と前記端子金具とを電気的に接続する電気接続部が、変性シリコーン系の湿気硬化型接着性樹脂の硬化により形成される硬化物により覆われていることを特徴とする端子付き被覆電線。 A covered electric wire formed by coating a conductor with an insulating coating, and a terminal fitting connected to an exposed conductor exposed at an end of the covered electric wire,
An electrical connection portion for electrically connecting the exposed conductor and the terminal fitting is covered with a cured product formed by curing a modified silicone-based moisture-curable adhesive resin. Electrical wire. 前記導体はアルミニウムまたはアルミニウム合金からなる素線を含み、前記端子金具は、銅または銅合金製材料からなることを特徴とする請求項３に記載の端子付き被覆電線。 The said conductor contains the strand which consists of aluminum or aluminum alloy, The said terminal metal fitting consists of copper or a copper alloy material, The covered electric wire with a terminal of Claim 3 characterized by the above-mentioned. 請求項３または請求項４に記載の端子付き被覆電線を備えることを特徴とするワイヤーハーネス。 A wire harness comprising the terminal-coated covered electric wire according to claim 3.
JP2011157750A 2011-07-19 2011-07-19 Anti-corrosion agent, covered wire with terminal, and wiring harness Pending JP2013025931A (en)

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JP2011157750A JP2013025931A (en) 2011-07-19 2011-07-19 Anti-corrosion agent, covered wire with terminal, and wiring harness
PCT/JP2012/067293 WO2013011846A1 (en) 2011-07-19 2012-07-06 Anti-corrosion agent, sheathed electrical wire with terminal, and wire harness

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JP2014186801A (en) * 2013-03-22 2014-10-02 Auto Network Gijutsu Kenkyusho:Kk Terminal-provided coated electric wire, wire harness and anticorrosive agent
JP2015153721A (en) * 2014-02-19 2015-08-24 住友電装株式会社 Method of manufacturing electrical wire with terminal

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JP2015153721A (en) * 2014-02-19 2015-08-24 住友電装株式会社 Method of manufacturing electrical wire with terminal

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