JP2010055925A - Insulated wire, and wiring harness - Google Patents

Insulated wire, and wiring harness Download PDF

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Publication number
JP2010055925A
JP2010055925A JP2008219436A JP2008219436A JP2010055925A JP 2010055925 A JP2010055925 A JP 2010055925A JP 2008219436 A JP2008219436 A JP 2008219436A JP 2008219436 A JP2008219436 A JP 2008219436A JP 2010055925 A JP2010055925 A JP 2010055925A
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conductor
insulated wire
wire
parts
mass
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Soichiro Tsukamoto
宗一郎 塚本
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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Priority to JP2008219436A priority Critical patent/JP2010055925A/en
Priority to PCT/JP2009/053656 priority patent/WO2010023972A1/en
Publication of JP2010055925A publication Critical patent/JP2010055925A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/443Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulated Conductors (AREA)
  • Organic Insulating Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insulated wire and a wiring harness, having a sufficient heat resistant life and better insertability than a conventional one. <P>SOLUTION: The insulated wire includes a conductor and an insulation material covering an outer peripheral of the conductor. The insulation material is formed of a resin composition containing 30-35 parts by mass of a trimellitic acid plasticizer per 100 parts by mass of a vinyl chloride resin. Moreover, the insulation material covers the conductor with an adhesive force of 10 N or higher and it is preferable that a cross-sectional area of the conductor may be 0.22 mm<SP>2</SP>or less. The wiring harness is to include the above insulated wire. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、絶縁電線およびワイヤーハーネスに関し、さらに詳しくは、車両部品、電気・電子機器部品などに好適に用いられる絶縁電線およびワイヤーハーネスに関するものである。   The present invention relates to an insulated wire and a wire harness, and more particularly to an insulated wire and a wire harness that are suitably used for vehicle parts, electrical / electronic device parts, and the like.

従来、自動車部品などの車両部品や電気・電子機器部品などの配線に用いられる絶縁電線としては、導体の外周に、塩化ビニル系樹脂組成物を被覆したものが広く用いられている。一般に、絶縁電線に被覆される塩化ビニル系樹脂組成物には、柔軟性を付与するために可塑剤が配合されることが多い。可塑剤としては、例えば、フタル酸ジオクチルやフタル酸ジイソノニルなどのフタル酸エステル系可塑剤が広く用いられている。   2. Description of the Related Art Conventionally, as an insulated wire used for wiring of vehicle parts such as automobile parts and electric / electronic equipment parts, a conductor whose outer periphery is coated with a vinyl chloride resin composition has been widely used. Generally, a plasticizer is often blended in a vinyl chloride resin composition coated on an insulated wire in order to impart flexibility. As the plasticizer, for example, phthalate plasticizers such as dioctyl phthalate and diisononyl phthalate are widely used.

例えば、特許文献1には、塩化ビニル系樹脂組成物にフタル酸エステル系可塑剤を含有してなる絶縁材を芯線の周囲に被覆した絶縁電線が開示されている。   For example, Patent Document 1 discloses an insulated wire in which an insulating material containing a phthalate plasticizer in a vinyl chloride resin composition is coated around a core wire.

特開平9−147632号公報JP-A-9-147632

ところで、例えば、自動車などに用いられる絶縁電線は、エンジンルーム内など、環境温度の高い場所に使用される場合があり、耐熱寿命性が要求されることがある。   By the way, for example, an insulated wire used in an automobile or the like may be used in a place with a high environmental temperature, such as in an engine room, and may require a heat resistant life.

ところが、上記フタル酸エステル系可塑剤などは、高温下において揮発しやすく、柔軟性や伸びが損なわれて耐熱寿命性が低下しやすかった。そのため、耐熱寿命性が要求される絶縁電線には、可塑性や熱安定性が比較的高いトリメリット酸系可塑剤が用いられることがある。   However, the phthalate ester plasticizer and the like are apt to volatilize at high temperatures, and the flexibility and elongation are impaired, and the heat-resistant life is likely to be lowered. Therefore, a trimellitic acid plasticizer having relatively high plasticity and thermal stability may be used for an insulated wire that requires heat-resistant life.

しかしながら、耐熱寿命性を高めた絶縁電線では、トリメリット酸系可塑剤が多く配合されているため、柔軟性は高くなるものの、却って曲げ反発力が低下しやすい。特に径の細い絶縁電線では、コネクタに絶縁電線を挿入する際に、座屈しやすく挿入性が悪くなるといった問題があった。   However, in an insulated wire with improved heat-resistant life, a large amount of trimellitic acid plasticizer is blended, so that the flexibility is increased, but the bending repulsive force tends to decrease. In particular, in the case of an insulated wire having a small diameter, there is a problem that when the insulated wire is inserted into the connector, the wire is easily buckled and the insertability is deteriorated.

本発明が解決しようとする課題は、十分な耐熱寿命性を有し、従来よりも挿入性に優れる絶縁電線を提供することにある。また、この絶縁電線を含んだワイヤーハーネスを提供することにある。   The problem to be solved by the present invention is to provide an insulated wire that has a sufficient heat-resistant life and is more excellent in insertability than before. Moreover, it is providing the wire harness containing this insulated wire.

本発明に係る絶縁電線は、導体と、上記導体の外周に被覆された絶縁材を有する絶縁電線であって、上記絶縁材は、塩化ビニル系樹脂100質量部に対し、トリメリット酸系可塑剤を30〜35質量部含有する樹脂組成物より形成されており、さらに、上記絶縁材は上記導体との密着力が10N以上で被覆されていることを要旨とするものである。   The insulated wire according to the present invention is an insulated wire having a conductor and an insulating material coated on the outer periphery of the conductor, and the insulating material is a trimellitic acid plasticizer with respect to 100 parts by mass of the vinyl chloride resin. Is formed from a resin composition containing 30 to 35 parts by mass, and the insulating material is coated with an adhesive force of 10 N or more with the conductor.

この場合、上記導体の断面積が0.22mm以下であると良い。 In this case, the cross-sectional area of the conductor is preferably 0.22 mm 2 or less.

一方、本発明に係るワイヤーハーネスは、上記絶縁電線を含むことを要旨とするものである。   On the other hand, the wire harness which concerns on this invention makes it a summary to contain the said insulated wire.

本発明に係る絶縁電線は、塩化ビニル系樹脂100質量部に対し、トリメリット酸系可塑剤を30〜35質量部含有する樹脂組成物より形成された絶縁材を有しており、さらにこの絶縁材は導体との密着力が10N以上で被覆されている。そのため、十分な耐熱寿命性を有し、従来よりも挿入性に優れる。これは、従来よりもトリメリット酸系可塑剤の配合量を少なくし、さらに絶縁材と導体との密着力を高くしたため、絶縁電線の曲げ反発力を維持することができ、座屈し難くなったためと推察される。   The insulated wire according to the present invention has an insulating material formed from a resin composition containing 30 to 35 parts by mass of a trimellitic acid plasticizer with respect to 100 parts by mass of a vinyl chloride resin. The material is coated with a contact strength of 10 N or more with the conductor. Therefore, it has sufficient heat-resistant life and is more excellent in insertion than the conventional one. This is because the blending amount of trimellitic acid plasticizer is less than before and the adhesion between the insulating material and the conductor is increased, so that the bending repulsive force of the insulated wire can be maintained and it becomes difficult to buckle. It is guessed.

この場合、上記導体の断面積が0.22mm以下であれば、上記効果に優れる。 In this case, if the cross-sectional area of the conductor is 0.22 mm 2 or less, the above effect is excellent.

一方、本発明に係るワイヤーハーネスは、上述した絶縁電線を有している。そのため、ワイヤーハーネス組み立て時に、絶縁電線のコネクタ挿入が容易であって、絶縁電線が座屈するのを抑えることができる。そして、十分な耐熱寿命性を有し、長期にわたって高い信頼性を確保することができる。   On the other hand, the wire harness which concerns on this invention has the insulated wire mentioned above. Therefore, when the wire harness is assembled, it is easy to insert the connector of the insulated wire, and the insulated wire can be prevented from buckling. And it has sufficient heat-resistant lifetime and can ensure high reliability over a long period of time.

次に、本発明の実施形態について詳細に説明する。   Next, an embodiment of the present invention will be described in detail.

本発明に係る絶縁電線は、導体と、この導体の外周に被覆された絶縁材とを有している。また、絶縁材は、塩化ビニル系樹脂とトリメリット酸系可塑剤とを含む樹脂組成物より形成されている。   The insulated electric wire which concerns on this invention has a conductor and the insulating material coat | covered on the outer periphery of this conductor. The insulating material is formed of a resin composition containing a vinyl chloride resin and a trimellitic acid plasticizer.

導体は、例えば、単線の金属線、複数本の金属素線が撚り合わされた撚線、撚線が圧縮加工されたものなどが挙げられる。また、導体の材質としては、例えば、軟銅、錫メッキ軟銅、銅合金、アルミニウム、アルミニウム合金などを例示することができる。   Examples of the conductor include a single metal wire, a twisted wire in which a plurality of metal strands are twisted together, and a material in which a twisted wire is compressed. Moreover, as a material of a conductor, an annealed copper, a tin plating annealed copper, a copper alloy, aluminum, an aluminum alloy etc. can be illustrated, for example.

塩化ビニル系樹脂としては、塩化ビニル単独重合体のほか、塩化ビニル系共重合体、さらにこれらの混合体などを用いることができる。塩化ビニル系共重合体としては、例えば、エチレン、プロピレン、アクリロニトリル、酢酸ビニル、アクリル酸およびそのエステル類、メタクリル酸およびそのエステル類、マレイン酸およびそのエステル類等との共重合体などを用いることができる。   As the vinyl chloride resin, vinyl chloride homopolymers, vinyl chloride copolymers, and mixtures thereof can be used. Examples of vinyl chloride copolymers include copolymers with ethylene, propylene, acrylonitrile, vinyl acetate, acrylic acid and esters thereof, methacrylic acid and esters thereof, maleic acid and esters thereof, and the like. Can do.

トリメリット酸系可塑剤は、上記塩化ビニル系樹脂100質量部に対し、30〜35質量部の割合で含有されている。トリメリット酸系可塑剤が30質量部未満になると、耐熱寿命性の低下を抑制することが難しい。また、トリメリット酸系可塑剤が35質量部を越えると、曲げ反発力が低下して、コネクタに絶縁電線を挿入し難くなる。   The trimellitic acid plasticizer is contained in a proportion of 30 to 35 parts by mass with respect to 100 parts by mass of the vinyl chloride resin. When the trimellitic acid plasticizer is less than 30 parts by mass, it is difficult to suppress a decrease in heat-resistant life. On the other hand, when the trimellitic acid plasticizer exceeds 35 parts by mass, the bending repulsion force is reduced, making it difficult to insert the insulated wire into the connector.

トリメリット酸系可塑剤としては、例えば、トリメリット酸との通常のエステル化法によりエステル化して得られるトリメリット酸エステルを好適に用いることができる。トリメリット酸エステルは、耐熱寿命性が高く、また、塩化ビニル系樹脂に対する親和性にも優れるからである。トリメリット酸エステルとしては、例えば、テトラ−2−エチルヘキシルピロメリテート、テトラ−n−オクチルピロメリテート、テトライソノニルピロメリテート、テトライソデシルピロメリテートなどを例示することができる。これらは、単独で用いても良いし、併用しても良い。   As the trimellitic acid plasticizer, for example, trimellitic acid ester obtained by esterification by a usual esterification method with trimellitic acid can be suitably used. This is because trimellitic acid ester has a high heat-resistant lifetime and also has an excellent affinity for vinyl chloride resins. Examples of trimellitic acid esters include tetra-2-ethylhexyl pyromellitate, tetra-n-octyl pyromellitate, tetraisononyl pyromellitate, tetraisodecyl pyromellitate and the like. These may be used alone or in combination.

そして、絶縁材は、導体の外周に10N以上の密着力で被覆されている。導体との密着力が10N未満になると、絶縁電線に腰を持たせることが難しく、挿入性を向上させることができないからである。なお、導体との密着力の上限は特に限定されないが、柔軟性の観点から、好ましくは、20N以下であると良い。導体との密着力は、ISO6722に準拠して測定することができる。   And the insulating material is coat | covered by the adhesive force of 10N or more on the outer periphery of a conductor. This is because if the adhesion with the conductor is less than 10 N, it is difficult to hold the insulated wire, and the insertion property cannot be improved. In addition, although the upper limit of the adhesive force with a conductor is not specifically limited, From a flexible viewpoint, Preferably it is 20N or less. The adhesion strength with the conductor can be measured according to ISO 6722.

さらに、絶縁材には、上記以外にも例えば他に、難燃剤、着色剤、熱安定剤(酸化防止剤、老化防止剤など)、金属不活性剤(銅害防止剤など)、光安定剤、造核剤、帯電防止剤、難燃助剤(シリコン系、窒素系、ホウ酸亜鉛、リン系など)、カップリング剤(シラン系、チタネート系など)、亜鉛系化合物(酸化亜鉛、硫化亜鉛など)などの各種添加剤が1種または2種以上添加されていても良い。   In addition to the above, the insulating material includes, for example, flame retardants, colorants, heat stabilizers (antioxidants, antioxidants, etc.), metal deactivators (copper damage inhibitors, etc.), light stabilizers , Nucleating agents, antistatic agents, flame retardant aids (silicon, nitrogen, zinc borate, phosphorus, etc.), coupling agents (silane, titanate, etc.), zinc compounds (zinc oxide, zinc sulfide) Etc.) may be added alone or in combination of two or more.

次に、絶縁電線の製造方法の一例について説明する。   Next, an example of a method for manufacturing an insulated wire will be described.

まず、絶縁材を形成する樹脂組成物を調製する。塩化ビニル系樹脂と、トリメリット酸系可塑剤と、必要に応じて、塩化ビニル系樹脂以外のポリマーや各種添加剤などを配合し、これらを通常のタンブラーなどでドライブレンドしたり、あるいは、バンバリミキサー、加圧ニーダー、混練押出機、二軸押出機、ロールなどの通常の混練機で溶融混練して均一に分散したりすることにより樹脂組成物を得ることができる。   First, a resin composition that forms an insulating material is prepared. Blend vinyl chloride resin, trimellitic acid plasticizer, and polymers and various additives other than vinyl chloride resin as necessary, and dry blend them with a normal tumbler, etc. A resin composition can be obtained by melt-kneading with a normal kneader such as a remixer, a pressure kneader, a kneading extruder, a twin screw extruder, or a roll and uniformly dispersing.

そして、例えば、押出成形機を用いて、導体の外周に樹脂組成物を押出被覆するなどすれば絶縁電線を製造することができる。このとき、あらかじめ予熱した導体の外周に樹脂組成物を押出被覆すれば、10N以上の密着力が得られやすい。さらに、樹脂組成物を押出する際の射出圧力や、押出成形機のダイスのサイズを調整することによっても、導体との密着力を高めることができる。また、導体の断面積が、0.22mm以下の細径電線であれば、挿入性の効果により優れる。そして、導体の断面積の下限は特に限定されないが、製造上の観点から、好ましくは0.13mm以上であると良い。 And an insulated wire can be manufactured, for example, by extruding and coating the resin composition on the outer periphery of the conductor using an extruder. At this time, if the outer periphery of the preheated conductor is coated with the resin composition by extrusion, an adhesive force of 10 N or more can be easily obtained. Furthermore, the adhesive force with the conductor can also be increased by adjusting the injection pressure when extruding the resin composition and the size of the die of the extruder. Moreover, if the cross-sectional area of a conductor is a thin diameter electric wire of 0.22 mm < 2 > or less, it is excellent in the effect of insertability. The lower limit of the cross-sectional area of the conductor is not particularly limited, but is preferably 0.13 mm 2 or more from the viewpoint of manufacturing.

次に、本発明に係るワイヤーハーネスについて説明する。   Next, the wire harness according to the present invention will be described.

本発明に係るワイヤーハーネスは、上記絶縁電線を含んでなるものである。上記絶縁電線のみで構成される電線束であっても良いし、他の樹脂組成物が被覆された絶縁電線、例えば、オレフィン系の絶縁電線などを含んで構成される電線束であっても良い。電線束は、例えばワイヤーハーネス保護材により被覆されていると良い。電線の本数は、任意に定めることができ、特に限定されるものではない。   The wire harness which concerns on this invention comprises the said insulated wire. It may be a wire bundle composed only of the insulated wires, or an insulated wire covered with other resin composition, for example, a wire bundle composed of an olefin-based insulated wire. . For example, the wire bundle may be covered with a wire harness protective material. The number of electric wires can be determined arbitrarily and is not particularly limited.

ワイヤーハーネス保護材は、複数本の絶縁電線が束ねられた電線束の外周を覆い、内部の電線束を外部環境などから保護する役割を有するものである。ワイヤーハーネス保護材を構成する基材としては、特に限定されるものではない。樹脂組成物には、難燃剤を適宜添加すると良い。   A wire harness protective material has a role which covers the outer periphery of the electric wire bundle in which the multiple insulated electric wire was bundled, and protects an internal electric wire bundle from the external environment. It does not specifically limit as a base material which comprises a wire harness protective material. A flame retardant may be appropriately added to the resin composition.

ワイヤーハーネス保護材としては、テープ状に形成された基材の少なくとも一方の面に粘着剤が塗布されたものや、チューブ状、シート状などに形成された基材を有するものなどを、用途に応じて適宜選択して用いることができる。   For wire harness protection materials, for example, those with adhesive applied to at least one surface of a tape-shaped substrate, or those having a substrate formed in a tube shape, sheet shape, etc. It can be appropriately selected and used accordingly.

以下に本発明を実施例により具体的に説明するが、本発明はこれらによって限定されるものではない。   EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited thereto.

(供試材料)
本実施例において使用した供試材料の製造元、商品名を示す。
(Test material)
The manufacturer and the trade name of the test material used in this example are shown.

(A)塩化ビニル系樹脂
・大祐化成(株)製、商品名「#4352A」
(A) Vinyl chloride resin, manufactured by Daiyu Kasei Co., Ltd., trade name “# 4352A”

(B)トリメリット酸系可塑剤
・大日本インキ工業(株)製、商品名「Wー750」
(B) Trimellitic acid plasticizer, manufactured by Dainippon Ink Industries, Ltd., trade name “W-750”

(絶縁電線の作製)
初めに、二軸混練機を用いて、後述の表に示す各成分を混合温度160度にて混合した後、ペレタイザーにてペレット状に成形して樹脂組成物を得た。次いで、軟銅線を7本撚り合わせた軟銅撚線の導体(断面積0.22mm)をあらかじめ予熱し、この導体の外周に、得られた各樹脂組成物を押出成形機により、0.3mm厚で押出被覆して絶縁材を形成し、本実施例に係る絶縁電線および比較例に係る絶縁電線を作製した。
(Production of insulated wires)
First, using a twin-screw kneader, the components shown in the table below were mixed at a mixing temperature of 160 ° C., and then molded into pellets with a pelletizer to obtain a resin composition. Next, a conductor (cross-sectional area 0.22 mm 2 ) of an annealed copper twisted wire in which 7 annealed copper wires are twisted together is preheated in advance, and each resin composition obtained on the outer periphery of the conductor is 0.3 mm by an extruder. An insulating material was formed by extrusion coating with a thickness, and an insulated wire according to this example and an insulated wire according to a comparative example were produced.

そして、以上のように作製した各絶縁電線について、挿入性試験、耐熱寿命性試験を実施した。以下に、密着力および各試験方法について説明する。   And about each insulated wire produced as mentioned above, the insertability test and the heat-resistant life test were implemented. Below, adhesion and each test method are explained.

(密着力の測定)
ISO6722に準拠して行なった。すなわち、電線を75mmの長さに切り出して試験片とした。次いで、この試験片の片端25mmを固定し、残り50mmの絶縁材を引張速度200m/minにて剥ぎ取る際に絶縁材が導体からずれた時の荷重を密着力の値とした。
(Measurement of adhesion)
This was performed according to ISO6722. That is, the electric wire was cut into a length of 75 mm to obtain a test piece. Next, 25 mm of one end of the test piece was fixed, and the load when the insulating material was displaced from the conductor when the remaining 50 mm of the insulating material was peeled off at a tensile speed of 200 m / min was defined as the value of the adhesion force.

(挿入性試験)
電線端部に、電線の長手方向に沿って縮める方向へ力を加え、電線が座屈した時の荷重の値を測定し、この値が10N以上となるものを「合格」とし、10N未満のものを「不合格」とした。
(Insertion test)
A force is applied to the end of the wire in the direction of contraction along the longitudinal direction of the wire, and the value of the load when the wire is buckled is measured. The thing was regarded as "fail".

(耐熱寿命性試験)
電線から導体を抜き取った絶縁材を試験片とし、この試験片を温度130〜150℃に設定した恒温槽内につり下げ、130度で2000時間および150度で300時間加熱した後取り出し、常温に放置した後、引張試験機により伸び率を測定し、アレニウス曲線を作成した。この曲線から、110度で1万時間後の伸びの値が100%を越えるものを「合格」、100%未満のものを「不合格」とした。
(Heat resistance life test)
The insulating material from which the conductor is removed from the electric wire is used as a test piece, and the test piece is suspended in a thermostatic bath set at a temperature of 130 to 150 ° C., heated at 130 ° C. for 2000 hours and 150 ° C. for 300 hours, and then taken out. After leaving it to stand, the elongation percentage was measured with a tensile tester to create an Arrhenius curve. From this curve, when the elongation value after 10,000 hours at 110 degrees exceeds 100%, it is determined as “pass”, and when it is less than 100%, it is determined as “fail”.

表1に、絶縁材を形成する樹脂組成物の配合割合および評価結果を示す。なお、表1に示す値は、質量部で表したものである。   Table 1 shows the blending ratio and evaluation results of the resin composition forming the insulating material. The values shown in Table 1 are expressed in parts by mass.

Figure 2010055925
Figure 2010055925

上記表1によれば、比較例に係る絶縁電線は、挿入性、耐熱寿命性のどちらかまたは両方に難点があることがわかる。   According to Table 1 above, it can be seen that the insulated wire according to the comparative example has difficulties in either or both of the insertability and the heat resistance life.

すなわち、比較例1は、トリメリット酸系可塑剤が30質量部未満であり、密着力も10N未満であるため、挿入性および耐熱寿命性に劣る。比較例2は、トリメリット酸系可塑剤が30質量部未満であるため、耐熱寿命性に劣る。   That is, in Comparative Example 1, the trimellitic acid plasticizer is less than 30 parts by mass and the adhesion is less than 10 N, so that the insertability and the heat-resistant life are poor. Since the trimellitic acid type plasticizer is less than 30 mass parts, the comparative example 2 is inferior in heat-resistant lifetime.

また、比較例3、4、5は、密着力が10N未満であるため、挿入性に劣る。比較例6および8は、トリメリット酸系可塑剤が35質量部を越えており、密着力も10N未満であるため、挿入性に劣る。比較例7および9は、トリメリット酸系可塑剤が35質量部を越えているため、挿入性に劣る。   In addition, Comparative Examples 3, 4, and 5 are inferior in insertability because the adhesion is less than 10N. Comparative Examples 6 and 8 are inferior in insertability because the trimellitic acid plasticizer exceeds 35 parts by mass and the adhesion is less than 10N. Comparative Examples 7 and 9 are inferior in insertability because the trimellitic acid plasticizer exceeds 35 parts by mass.

これらに対して、実施例に係る絶縁電線は、トリメリット酸系可塑剤が塩化ビニル系樹脂100質量部に対し30〜35質量部配合されており、さらに、密着力が10N以上であるので、挿入性および耐熱寿命性のいずれにも優れていることが確認できた。   On the other hand, in the insulated wire according to the example, the trimellitic acid plasticizer is blended in an amount of 30 to 35 parts by mass with respect to 100 parts by mass of the vinyl chloride resin, and the adhesion is 10 N or more. It was confirmed that both the insertability and the heat resistant life were excellent.

また、密着力が10N未満になると、可塑剤の配合割合に関係なく、挿入力が急激に減少した。密着力が10〜20Nの範囲では、可塑剤の配合割合に関係なく挿入力にそれほど差がみられなかった。そして、絶縁材は導体との密着力が10Nで十分に密着されているため、密着力をさらに上げても、挿入力にそれほど差がみられなかった。   Further, when the adhesion force was less than 10 N, the insertion force decreased rapidly regardless of the blending ratio of the plasticizer. When the adhesion force was in the range of 10 to 20 N, the insertion force was not so different regardless of the blending ratio of the plasticizer. Since the insulating material is sufficiently in close contact with the conductor at 10 N, there was not much difference in insertion force even if the intimate force was further increased.

なお、実施例および比較例に係る絶縁電線をコネクタに接続したところ、比較例1および比較例3〜9の絶縁電線では、挿入時に座屈してしまい、挿入性が悪かった。一方、実施例1〜3に係る絶縁電線では、挿入時に座屈することなく、容易にコネクタに接続することができた。   In addition, when the insulated wire which concerns on an Example and a comparative example was connected to the connector, in the insulated wire of the comparative example 1 and the comparative examples 3-9, it buckled at the time of insertion, and the insertability was bad. On the other hand, the insulated wires according to Examples 1 to 3 could be easily connected to the connector without buckling during insertion.

以上、本発明の実施の形態について詳細に説明したが、本発明は上記実施の形態に何ら限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の改変が可能である。   Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

Claims (3)

導体と、前記導体の外周に被覆された絶縁材を有する絶縁電線であって、
前記絶縁材は、塩化ビニル系樹脂100質量部に対し、トリメリット酸系可塑剤を30〜35質量部含有する樹脂組成物より形成されており、
さらに、前記絶縁材は前記導体との密着力が10N以上で被覆されていることを特徴とする絶縁電線。
An insulated wire having a conductor and an insulating material coated on the outer periphery of the conductor,
The insulating material is formed of a resin composition containing 30 to 35 parts by mass of trimellitic acid plasticizer with respect to 100 parts by mass of vinyl chloride resin.
Furthermore, the insulating material is covered with an adhesive force of 10 N or more with the conductor, and the insulated wire is characterized in that
前記導体の断面積が0.22mm以下であることを特徴とする絶縁電線。 An insulated wire having a cross-sectional area of the conductor of 0.22 mm 2 or less. 請求項1または2に記載の絶縁電線を含むことを特徴とするワイヤーハーネス。   A wire harness comprising the insulated wire according to claim 1.
JP2008219436A 2008-08-28 2008-08-28 Insulated wire, and wiring harness Pending JP2010055925A (en)

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JP2012099231A (en) * 2010-10-29 2012-05-24 Yazaki Corp Electric wire
JP2014049234A (en) * 2012-08-30 2014-03-17 Fuji Heavy Ind Ltd Wire harness
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JP2018063935A (en) * 2016-10-13 2018-04-19 住友電気工業株式会社 Electric wire and method for producing the same
US9976044B2 (en) 2012-11-13 2018-05-22 Yazaki Corporation Polyvinyl chloride resin composition for automotive electric wire, and ultrathin-wall low-voltage electric wire for automobile
US10366806B2 (en) 2016-05-17 2019-07-30 Yazaki Corporation Vehicle electric wire and wire harness using the same

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JP2012099231A (en) * 2010-10-29 2012-05-24 Yazaki Corp Electric wire
JP2014049234A (en) * 2012-08-30 2014-03-17 Fuji Heavy Ind Ltd Wire harness
US9976044B2 (en) 2012-11-13 2018-05-22 Yazaki Corporation Polyvinyl chloride resin composition for automotive electric wire, and ultrathin-wall low-voltage electric wire for automobile
JP2016105404A (en) * 2015-12-28 2016-06-09 矢崎総業株式会社 Electric wire
US10366806B2 (en) 2016-05-17 2019-07-30 Yazaki Corporation Vehicle electric wire and wire harness using the same
JP2018063935A (en) * 2016-10-13 2018-04-19 住友電気工業株式会社 Electric wire and method for producing the same

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