JP5237154B2 - Crimp terminal and electric wire with terminal - Google Patents

Crimp terminal and electric wire with terminal Download PDF

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JP5237154B2
JP5237154B2 JP2009050280A JP2009050280A JP5237154B2 JP 5237154 B2 JP5237154 B2 JP 5237154B2 JP 2009050280 A JP2009050280 A JP 2009050280A JP 2009050280 A JP2009050280 A JP 2009050280A JP 5237154 B2 JP5237154 B2 JP 5237154B2
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pair
wire
contact
terminal
electric wire
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JP2010205583A (en
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康雄 大森
宏樹 平井
純一 小野
徹児 田中
洋樹 下田
拓次 大塚
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株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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本発明は、導体線を絶縁体で被覆した電線に圧着される圧着端子、およびそのような圧着端子を備えた端子付き電線に関する。   The present invention relates to a crimp terminal that is crimped to an electric wire in which a conductor wire is covered with an insulator, and an electric wire with a terminal including such a crimp terminal.
従来から、複数の導体線を絶縁体で被覆し、端末において導体線が露出する電線と、該端末に圧着される圧着端子とを有する端子付き電線が知られている(例えば特許文献1)。端子付き電線の圧着端子60は、図6に示すように、電線の端末における導体線の露出部分に圧着されるワイヤバレル71と、ワイヤバレル71とは所定の距離離間して配置され、導体線が絶縁体で被覆された被覆部分に圧着されるインシュレーションバレル73とを含む。図7は、ワイヤバレル71が電線75の露出部分76に圧着されると共に、インシュレーションバレル73が電線75の被覆部分77に圧着された状態、つまり圧着端子60が電線75に圧着されて製造された端子付き電線70を示している。   2. Description of the Related Art Conventionally, a terminal-attached electric wire is known that includes a plurality of conductor wires covered with an insulator and an electric wire from which the conductor wire is exposed at a terminal and a crimp terminal that is crimped to the terminal (for example, Patent Document 1). As shown in FIG. 6, the crimp terminal 60 of the terminal-attached electric wire is arranged such that the wire barrel 71 to be crimped to the exposed portion of the conductor wire at the end of the electric wire and the wire barrel 71 are spaced apart from each other by a predetermined distance. And an insulation barrel 73 which is crimped to a covering portion covered with an insulator. FIG. 7 shows a state where the wire barrel 71 is crimped to the exposed portion 76 of the electric wire 75 and the insulation barrel 73 is crimped to the covering portion 77 of the electric wire 75, that is, the crimp terminal 60 is crimped to the electric wire 75. An electric wire 70 with a terminal is shown.
実開平5−72053号公報Japanese Utility Model Publication No. 5-72053
端子付き電線70では、図7から明らかなように、ワイヤバレル71およびインシュレーションバレル73の圧着加工後、ワイヤバレル71とインシュレーションバレル73との間で導体線76が露出した状態となっている。したがって、導体線76がイオン化傾向の強い材料(特にアルミニウムやアルミニウム合金)からなる場合、導体線76に水分が付着すると、導体線76は、端子60を構成する金属(例えば銅)との間で電食してしまうおそれがある。例えば、塩分を含む砂埃(特にNa、Caのアルカリ金属、アルカリ土類金属を含むもの)が導体線76に付着しやすい環境では、砂埃は、周囲から吸湿することにより導体線76を腐食させる。   As is apparent from FIG. 7, in the terminal-attached electric wire 70, the conductor wire 76 is exposed between the wire barrel 71 and the insulation barrel 73 after the wire barrel 71 and the insulation barrel 73 are crimped. . Therefore, when the conductor wire 76 is made of a material having a strong ionization tendency (particularly aluminum or aluminum alloy), if moisture adheres to the conductor wire 76, the conductor wire 76 is between the metal (for example, copper) constituting the terminal 60. There is a risk of electric corrosion. For example, in an environment where dust containing salt (especially, containing alkali metals of Na and Ca and alkaline earth metals) is likely to adhere to the conductor wire 76, the dust corrodes the conductor wire 76 by absorbing moisture from the surroundings.
その一方、端子付き電線70の端子60を防水コネクタハウジングに挿入することにより、導体線76の腐食を防止することができるが、コネクタハウジングに防水機能を持たせる分、コスト高になる。   On the other hand, by inserting the terminal 60 of the terminal-attached electric wire 70 into the waterproof connector housing, the conductor wire 76 can be prevented from corroding, but the cost is increased because the connector housing has a waterproof function.
そこで、本発明は、上記事情に鑑み、電線の導体線に水分が付着することを抑制して、導体線の電食発生を減少させることが可能な圧着端子、およびそのような圧着端子を備えた圧着端子付き電線を提供することを目的とする。   Therefore, in view of the above circumstances, the present invention includes a crimp terminal capable of suppressing moisture from adhering to the conductor wire of the electric wire and reducing the occurrence of electrolytic corrosion of the conductor wire, and such a crimp terminal. It aims at providing the electric wire with a crimp terminal.
上記目的を達成するために、本発明に係る圧着端子は、複数の導体線が絶縁体で被覆される被覆部分と、端末において前記導体線が露出する露出部分とを有する電線の該端末に圧着される圧着端子であって、前記電線が載置される底壁と、前記底壁から立ち上がり、前記露出部分に圧着されるように曲げ加工される一対のワイヤバレルと、前記底壁から立ち上がり、前記被覆部分に圧着されるように曲げ加工される一対のインシュレーションバレルと、前記一対のワイヤバレルから前記一対のインシュレーションバレルにかけて連続して形成されており、前記一対のワイヤバレルと前記一対のインシュレーションバレルとの間の部分を覆うように曲げ加工される一対の連続壁とを含み、前記一対のワイヤバレルおよび一対の連続壁は金属材料からなり、前記一対のワイヤバレルは、前記曲げ加工に伴い互いに接触する一対の第1接触部を有しており、前記一対の連続壁は、前記曲げ加工に伴い互いに接触する一対の第2接触部を有しており、前記一対の第1接触部および一対の第2接触部のそれぞれには、互いに接触したときの密着度が前記金属材料よりも高い材料からなる接触層が設けられている。   In order to achieve the above object, a crimp terminal according to the present invention is crimped to an end of an electric wire having a covering portion in which a plurality of conductor wires are covered with an insulator and an exposed portion at which the conductor wires are exposed. A crimping terminal, the bottom wall on which the electric wire is placed, a pair of wire barrels that are bent so as to rise from the bottom wall and be crimped to the exposed portion, and rise from the bottom wall, A pair of insulation barrels that are bent so as to be crimped to the covering portion, and are formed continuously from the pair of wire barrels to the pair of insulation barrels, and the pair of wire barrels and the pair of pairs A pair of continuous walls bent so as to cover a portion between the insulation barrel and the pair of wire barrels and the pair of continuous walls. The pair of wire barrels has a pair of first contact portions that come into contact with each other during the bending process, and the pair of continuous walls contact with each other along the bending process. Each of the pair of first contact portions and the pair of second contact portions is provided with a contact layer made of a material having a higher degree of adhesion when contacting each other than the metal material. .
本発明に係る端子付き電線は、複数の導体線が絶縁体で被覆される被覆部分と、端末において前記導体線が露出する露出部分とを有する電線と、前記電線の前記端末に圧着される上記構成の圧着端子とを含み、前記圧着端子が前記電線の前記端末に圧着された圧着状態において、一対のワイヤバレルは、一対の第1接触部が互いに接触した状態で前記電線の前記露出部分の一部分に圧着されており、一対のインシュレーションバレルは、前記電線の前記被覆部分に圧着されており、一対の連続壁は、一対の第2接触部が互いに接触した状態で前記一対のワイヤバレルと前記一対のインシュレーションバレルとの間で前記露出部分の残り部分に圧着されている。   The terminal-attached electric wire according to the present invention is an electric wire having a covering portion where a plurality of conductor wires are covered with an insulator, an exposed portion where the conductor wire is exposed at a terminal, and the above-mentioned wire that is crimped to the terminal of the electric wire In a crimped state in which the crimp terminal is crimped to the end of the electric wire, the pair of wire barrels is configured such that the pair of first contact portions are in contact with each other and the exposed portion of the electric wire is The pair of insulation barrels are crimped to the covering portion of the electric wire, and the pair of continuous walls are connected to the pair of wire barrels in a state where the pair of second contact portions are in contact with each other. The remaining portion of the exposed portion is crimped between the pair of insulation barrels.
本発明に係る圧着端子およびこの圧着端子を有する端子付き電線によれば、一対の第1接触部および一対の第2接触部には、接触したときの密着度がワイヤバレルおよび連続壁の金属材料よりも高い材料からなる接触層が設けられているので、圧着端子が電線に圧着されて、一対の第1接触部が互いに接触し、一対の第2接触部が互いに接触したとき、第1接触部同士間の密着度および第2接触部同士間の密着度が高くなる。言い換えれば、互いに接触した一方の第1接触部と他方の第1接触部との間、および互いに接触した一方の第2接触部と他方の第2接触部との間に隙間が形成されることを抑制できる。これにより、水分や、湿気を含んだ砂埃等が一対の第1接触部間および第2接触部間を通り、導体線に付着することを抑制できる。その結果、導体線の電食を減少させることが可能である。   According to the crimp terminal according to the present invention and the electric wire with a terminal having the crimp terminal, the pair of first contact portions and the pair of second contact portions have a degree of adhesion when they are in contact with each other. Since the contact layer made of a higher material is provided, when the crimp terminal is crimped to the electric wire, the pair of first contact portions contact each other, and the pair of second contact portions contact each other, the first contact The degree of adhesion between the parts and the degree of adhesion between the second contact parts are increased. In other words, a gap is formed between one first contact portion and the other first contact portion that are in contact with each other, and between one second contact portion and the other second contact portion that are in contact with each other. Can be suppressed. Thereby, it can suppress that moisture, dust containing moisture, etc. pass between a pair of 1st contact parts and between 2nd contact parts, and adhere to a conductor wire. As a result, it is possible to reduce the electrolytic corrosion of the conductor wire.
本発明の好ましい実施形態では、前記一対の第1接触部は、前記底壁とは反対側に位置し、前記曲げ加工の際に互いに接触する一対の第1先端部からなり、前記一対の第2接触部は、前記底壁とは反対側に位置し、前記曲げ加工の際に互いに接触する一対の第2先端部からなる。   In a preferred embodiment of the present invention, the pair of first contact portions are located on the side opposite to the bottom wall, and comprise a pair of first tip portions that contact each other during the bending process, and the pair of first contact portions. The two contact portions are located on the side opposite to the bottom wall, and include a pair of second tip portions that are in contact with each other during the bending process.
本発明の他の好ましい実施形態では、前記接触層は樹脂層である。樹脂層は弾性変形しやすいので、樹脂層が互いに接触したときに得られる密着度は、金属材料同士が接触したときに得られる密着度よりも高い。   In another preferred embodiment of the present invention, the contact layer is a resin layer. Since the resin layer is easily elastically deformed, the adhesion obtained when the resin layers are in contact with each other is higher than the adhesion obtained when the metal materials are in contact with each other.
本発明のさらに他の好ましい実施形態では、前記圧着端子は、所定形状に打ち抜いた1枚の金属板に曲げ加工を施すことにより成形されており、前記金属板における前記一対の第1接触部および前記一対の第2接触部に対応する部分には、樹脂層が接着または塗布により設けられている。   In still another preferred embodiment of the present invention, the crimp terminal is formed by bending a single metal plate punched into a predetermined shape, and the pair of first contact portions on the metal plate and Resin layers are provided by adhesion or application at portions corresponding to the pair of second contact portions.
本発明のさらに他の好ましい実施形態では、前記導体線がアルミニウムまたはアルミニウム合金からなる。アルミニウムおよびアルミニウム合金がイオン化傾向の強い材料であり、水分の付着により異種金属との間で電食し易いことを考慮すると、導体線がアルミニウムまたはアルミニウム合金からなる場合、本発明に係る端子付き電線の圧着端子は、アルミ電線の電食を抑制するのに有効である。   In still another preferred embodiment of the present invention, the conductor wire is made of aluminum or an aluminum alloy. In consideration of the fact that aluminum and aluminum alloys are strongly ionized materials, and that it is easy to galvanize between different metals due to moisture adhesion, when the conductor wire is made of aluminum or aluminum alloy, the terminal-equipped electric wire according to the present invention The crimp terminal is effective for suppressing the electrolytic corrosion of the aluminum electric wire.
本発明に係る圧着端子および圧着端子付き電線によれば、導体線に電食発生を抑制することが可能である。   According to the crimp terminal and the electric wire with the crimp terminal according to the present invention, it is possible to suppress the occurrence of electrolytic corrosion on the conductor wire.
本発明の実施形態に係る端子付き電線の斜視図である。It is a perspective view of the electric wire with a terminal concerning the embodiment of the present invention. 電線の端末に圧着される前の圧着端子を示す斜視図である。It is a perspective view which shows the crimp terminal before crimping to the terminal of an electric wire. 圧着端子が曲げ加工される前の圧着端子を内面側から見た平面図である。It is the top view which looked at the crimp terminal before the crimp terminal was bent from the inner surface side. 圧着端子が曲げ加工される前の圧着端子を外面側から見た平面図である。It is the top view which looked at the crimp terminal before a crimp terminal is bent from the outer surface side. 図1のVI−VI線に沿って切断した断面図であり、一対のワイヤバレルが電線の露出部分に圧着された状態を示している。It is sectional drawing cut | disconnected along the VI-VI line of FIG. 1, and has shown the state by which a pair of wire barrel was crimped | bonded to the exposed part of the electric wire. 従来の圧着端子を示す斜視図である。It is a perspective view which shows the conventional crimp terminal. 図7の圧着端子が電線に圧着されて製造された従来の端子付き電線を示す斜視図である。It is a perspective view which shows the conventional electric wire with a terminal manufactured by crimping | bonding the crimp terminal of FIG. 7 to the electric wire.
以下、本発明を実施するための形態について、図面を参照しながら詳細に説明する。   Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
図1は、本発明の実施形態に係る端子付き電線の斜視図である。端子付き電線30は、電線2と、電線2に圧着された圧着端子1とを含む。電線2は、撚り線状に配置された複数本の導体線4と、導体線4を絶縁体で被覆する絶縁被覆3とを有しており、端末において、絶縁被覆3が部分的に除去されて導体線4が露出した状態となっている。その端末に、圧着端子1が圧着されている。導体線4は、例えばアルミニウムまたはアルミニウム合金からなる。圧着端子1は、例えば黄銅やリン青銅の金属からなり、約0.2mmの厚さを有する。   FIG. 1 is a perspective view of a terminal-attached electric wire according to an embodiment of the present invention. The terminal-attached electric wire 30 includes an electric wire 2 and a crimp terminal 1 crimped to the electric wire 2. The electric wire 2 has a plurality of conductor wires 4 arranged in the form of stranded wires, and an insulation coating 3 that covers the conductor wires 4 with an insulator, and the insulation coating 3 is partially removed at the terminal. Thus, the conductor wire 4 is exposed. The crimp terminal 1 is crimped to the terminal. The conductor wire 4 is made of, for example, aluminum or an aluminum alloy. The crimp terminal 1 is made of a metal such as brass or phosphor bronze and has a thickness of about 0.2 mm.
図2は、電線2の端末に圧着される前の圧着端子1を示す斜視図である。圧着端子1は、電気接触部7と電線圧着部9とを前後に有する。この実施形態では、電気接触部7は、雌型であって図略の雄型端子が嵌入可能な箱型に形成されている。電線圧着部9は、電気接触部7から圧着端子1の長手方向に延びる底壁10と、底壁10から立ち上がる一対のワイヤバレル11と、ワイヤバレル11を挟んで電気接触部7とは反対側の位置で、かつワイヤバレル11とは所定の距離離間した位置で底壁10から立ち上がる一対のインシュレーションバレル13と、一対のワイヤバレル11から一対のインシュレーションバレル13にかけて連続して一体に形成されて一対のワイヤバレル11と一対のインシュレーションバレル13とを連結する連続壁14とを有する。ワイヤバレル11、インシュレーションバレル13および連続壁14は、U字形の正面形状を有している。   FIG. 2 is a perspective view showing the crimp terminal 1 before being crimped to the end of the electric wire 2. The crimp terminal 1 has an electrical contact portion 7 and a wire crimp portion 9 at the front and rear. In this embodiment, the electrical contact portion 7 is a female type and is formed in a box shape into which a male terminal (not shown) can be fitted. The electric wire crimping portion 9 includes a bottom wall 10 extending from the electrical contact portion 7 in the longitudinal direction of the crimp terminal 1, a pair of wire barrels 11 rising from the bottom wall 10, and the opposite side of the electrical contact portion 7 across the wire barrel 11. And a pair of insulation barrels 13 rising from the bottom wall 10 at a predetermined distance from the wire barrel 11 and a pair of wire barrels 11 to the pair of insulation barrels 13 are integrally formed continuously. And a continuous wall 14 connecting the pair of wire barrels 11 and the pair of insulation barrels 13. The wire barrel 11, the insulation barrel 13, and the continuous wall 14 have a U-shaped front shape.
圧着端子1は、電線2に圧着された状態において電線2に接触する内面18と、電線2に接触しない外面19とを有する。圧着端子1は、1枚の金属板を図3および図4に示す所定形状に打ち抜き、曲げ加工によって図2に示す形状に成形されている。図3および図4は共に、圧着端子1が曲げ加工される前の状態を示す平面図であり、特に、図3は、圧着端子1を内面18側から見た平面図であり、一方、図4は、圧着端子1を外面19側から見た平面図である。   The crimp terminal 1 has an inner surface 18 that comes into contact with the electric wire 2 in a state of being crimped to the electric wire 2 and an outer surface 19 that does not come into contact with the electric wire 2. The crimp terminal 1 is formed into a shape shown in FIG. 2 by punching one metal plate into a predetermined shape shown in FIGS. 3 and 4 and bending it. 3 and 4 are both plan views showing a state before the crimp terminal 1 is bent. In particular, FIG. 3 is a plan view of the crimp terminal 1 viewed from the inner surface 18 side. 4 is a plan view of the crimp terminal 1 as viewed from the outer surface 19 side.
図2〜図4に示すように、一対のワイヤバレル11のそれぞれは、底壁10とは反対側に位置する先端部(以下、第1先端部)16を有している。第1先端部16は、圧着端子1の長手方向(つまり、底壁10が延びる方向)に平行、かつ互いに平行に形成されている。また、一対のインシュレーションバレル13のそれぞれも、底壁10とは反対側に位置する先端部15を有している。先端部15は、圧着端子1の長手方向に平行、かつ互いに平行に形成されている。   As shown in FIGS. 2 to 4, each of the pair of wire barrels 11 has a distal end portion (hereinafter referred to as a first distal end portion) 16 located on the opposite side to the bottom wall 10. The first tip portion 16 is formed in parallel to the longitudinal direction of the crimp terminal 1 (that is, the direction in which the bottom wall 10 extends) and in parallel to each other. Each of the pair of insulation barrels 13 also has a tip portion 15 located on the side opposite to the bottom wall 10. The tip portion 15 is formed in parallel to the longitudinal direction of the crimp terminal 1 and in parallel to each other.
一対のワイヤバレル11から一対のインシュレーションバレル13にかけて連続して形成された一対の連続壁14は、インシュレーションバレル13の先端部15とワイヤバレル11の第1先端部16とを繋ぐ一対の先端部(以下、第2先端部)17を有している。ワイヤバレル11およびインシュレーションバレル13は、底壁10から見た高さが異なっているため、第2先端部17は、図2〜図4では、斜めに延びる直線形状を有している。   A pair of continuous walls 14 formed continuously from the pair of wire barrels 11 to the pair of insulation barrels 13 connect a pair of distal ends 15 connecting the distal end portion 15 of the insulation barrel 13 and the first distal end portion 16 of the wire barrel 11. Part (hereinafter referred to as second tip part) 17. Since the wire barrel 11 and the insulation barrel 13 have different heights when viewed from the bottom wall 10, the second tip portion 17 has a linear shape extending obliquely in FIGS. 2 to 4.
圧着端子1の外面19のうち、一対のワイヤバレル11および一対の連続壁14の適当な部位には、薄膜層(接触層)20が設けられている。薄膜層20は、具体的には、後述の圧着時に互いに接触する部位に設けられているものであって、本実施形態では、図4に示すように、一対のワイヤバレル11の各第1先端部16およびその近傍部分から、一対の連続壁14の各第2先端部17およびその近傍部分にかけて設けられている。   A thin film layer (contact layer) 20 is provided on appropriate portions of the pair of wire barrels 11 and the pair of continuous walls 14 on the outer surface 19 of the crimp terminal 1. Specifically, the thin film layer 20 is provided in a portion that contacts each other at the time of press-bonding, which will be described later. In the present embodiment, as shown in FIG. 4, each first tip of the pair of wire barrels 11. It is provided from the portion 16 and its vicinity to each second tip 17 of the pair of continuous walls 14 and its vicinity.
薄膜層20は、互いに接触したときに得られる密着度が、圧着端子1の母材である金属材料同士の密着度よりも高くなるように弾性変形しやすい材料で構成されている。具体的には、薄膜層20は樹脂層からなる。この樹脂層は、例えばPET、FEP、ナイロン、ポリプロピレンからなるフィルムをワイヤバレル11および連続壁14の表面に接着、または当該材料を塗布することによって形成されることが可能である。薄膜層20の厚さは適宜設定可能であるが、一般には約12μm程度が好ましい。樹脂層は、弾性変形しやすい特性を有しているため、薄膜層20が互いに接触したときに得られる密着度は、圧着端子1の金属材料同士が互いに接触したときに得られる密着度よりも高い。   The thin film layer 20 is made of a material that is easily elastically deformed so that the adhesion obtained when contacting each other is higher than the adhesion between the metal materials that are the base material of the crimp terminal 1. Specifically, the thin film layer 20 consists of a resin layer. This resin layer can be formed by bonding a film made of, for example, PET, FEP, nylon, or polypropylene to the surfaces of the wire barrel 11 and the continuous wall 14 or applying the material. Although the thickness of the thin film layer 20 can be set as appropriate, it is generally preferably about 12 μm. Since the resin layer has the property of being easily elastically deformed, the adhesion obtained when the thin film layers 20 are in contact with each other is more than the adhesion obtained when the metal materials of the crimp terminal 1 are in contact with each other. high.
薄膜層20は、圧着端子1の圧着時に互いに接触する。図2に示す圧着端子1を所定の金型を用いて電線2に圧着した状態では、図1に示すように、一対のワイヤバレル11は、電線2の端末における導体線4が露出した露出部分の一部を抱き込むように前記露出部分の一部に圧着される。また、一対のインシュレーションバレル13は、電線2の前記露出部分の直ぐ後側の絶縁被覆(被覆部分)3を抱き込むように絶縁被覆3に圧着される。さらに、一対の連続壁14は、一対のワイヤバレル11と一対のインシュレーションバレル13との間で、電線2の前記露出部分の残り部分、つまり前記露出部分におけるワイヤバレル11が圧着されない部分を覆うように圧着される。   The thin film layers 20 come into contact with each other when the crimp terminal 1 is crimped. In a state where the crimp terminal 1 shown in FIG. 2 is crimped to the electric wire 2 using a predetermined mold, the pair of wire barrels 11 are exposed portions where the conductor wire 4 is exposed at the end of the electric wire 2 as shown in FIG. It is crimped | bonded to a part of said exposed part so that a part of may be held. Further, the pair of insulation barrels 13 are pressure-bonded to the insulating coating 3 so as to embrace the insulating coating (coating portion) 3 immediately behind the exposed portion of the electric wire 2. Further, the pair of continuous walls 14 covers the remaining portion of the exposed portion of the electric wire 2 between the pair of wire barrels 11 and the pair of insulation barrels 13, that is, the portion where the wire barrel 11 in the exposed portion is not crimped. So that it is crimped.
一対のワイヤバレル11は、前記露出部分に圧着された状態では導体線4を抱き込むように塑性変形されているので、一対の第1先端部16は、図5に示すように撚り線状の導体線4に食い込んでいる。この食い込んだ状態では、一方の第1先端部16における外面19と、他方の第1先端部16における外面19とが互いに接触している。一対の第1先端部16における各外面19には、薄膜層20が設けられているので、一方の第1先端部16および他方の第1先端部16は、実際には薄膜層20を介して互いに接触している。したがって、一方の第1先端部16と他方の第1先端部16との間の密着度は、それらの一対の第1先端部16の母材である金属同士が直接接触する構成と比較して高くなる。   Since the pair of wire barrels 11 is plastically deformed so as to embrace the conductor wire 4 in a state where the pair of wire barrels 11 is crimped to the exposed portion, the pair of first tip portions 16 are formed of stranded wires as shown in FIG. It bites into the conductor wire 4. In this bite-in state, the outer surface 19 of one first tip portion 16 and the outer surface 19 of the other first tip portion 16 are in contact with each other. Since the thin film layer 20 is provided on each outer surface 19 of the pair of first tip portions 16, one first tip portion 16 and the other first tip portion 16 are actually interposed via the thin film layer 20. They are in contact with each other. Therefore, the degree of adhesion between one first tip portion 16 and the other first tip portion 16 is compared with a configuration in which the metals that are the base materials of the pair of first tip portions 16 are in direct contact with each other. Get higher.
なお、図示は省略するが、一対の連続壁14の一対の第2先端部17も、一対の第1先端部16と同様に、連続壁14が電線2の前記露出部分に圧着された状態では樹脂層20を介して互いに接触しており、一対の第2先端部17同士の密着度も樹脂層20によって高められている。   Although illustration is omitted, the pair of second tip portions 17 of the pair of continuous walls 14 is also in a state where the continuous wall 14 is pressure-bonded to the exposed portion of the electric wire 2, similarly to the pair of first tip portions 16. The resin layers 20 are in contact with each other, and the adhesion between the pair of second tip portions 17 is also enhanced by the resin layer 20.
以上説明した本実施形態では、圧着端子1の一対の連続壁14は、圧着端子1が電線2に圧着された圧着状態において、一対のワイヤバレル11と一対のインシュレーションバレル13との間で電線2の導体線4を覆っている。したがって、端子付き電線30を、例えば砂埃が多い環境において使用しても、一対の連続壁14により、砂埃が導体線4に付着することを抑制できる。その結果、端子付き電線30は、一対のワイヤバレルと一対のインシュレーションバレルとの間で導体線が露出する従来の端子付き電線と比較して、付着した砂埃の吸湿に起因する導体線4の電食を抑制することができる。   In the present embodiment described above, the pair of continuous walls 14 of the crimp terminal 1 are connected between the pair of wire barrels 11 and the pair of insulation barrels 13 in a crimped state where the crimp terminal 1 is crimped to the wire 2. 2 conductor wires 4 are covered. Therefore, even if the electric wire 30 with a terminal is used in an environment having a lot of dust, for example, the pair of continuous walls 14 can suppress the dust from adhering to the conductor wire 4. As a result, the electric wire 30 with a terminal is formed of the conductor wire 4 due to moisture absorption of attached dust as compared with a conventional electric wire with a terminal where the conductor wire is exposed between the pair of wire barrels and the pair of insulation barrels. Electric corrosion can be suppressed.
また、圧着端子1が電線2に圧着された状態において、一対のワイヤバレル11の一対の第1先端部16間の密着度、および一対の連続壁14の一対の第2先端部17間の密着度は、薄膜層20によって高められている。言い換えれば、互いに接触した一方の第1接触部16と他方の第1接触部16との間、および互いに接触した一方の第2接触部17と他方の第2接触部17との間に隙間が形成されることを抑制できる。これにより、水分や、湿気を含んだ砂埃等が一対の第1接触部16間および第2接触部17間を通り、導体線4に付着することをより効果的に抑制できる。その結果、導体線4の電食をさらに抑制することが可能である。   Further, in the state where the crimp terminal 1 is crimped to the electric wire 2, the closeness between the pair of first tip portions 16 of the pair of wire barrels 11 and the close contact between the pair of second tip portions 17 of the pair of continuous walls 14. The degree is increased by the thin film layer 20. In other words, there is a gap between one first contact portion 16 and the other first contact portion 16 that are in contact with each other, and between one second contact portion 17 and the other second contact portion 17 that are in contact with each other. It can suppress forming. Thereby, it is possible to more effectively suppress moisture, dust containing moisture, and the like from passing through between the pair of first contact portions 16 and between the second contact portions 17 and adhering to the conductor wire 4. As a result, electrolytic corrosion of the conductor wire 4 can be further suppressed.
さらに、アルミニウムが結露に起因する電食が発生し易い材料であることを考慮すると、導体線4がアルミニウムまたはアルミニウム合金からなる場合、本実施形態の圧着端子1は、アルミ電線の電食を抑制するのに有効である。   Furthermore, considering that aluminum is a material that easily generates galvanic corrosion due to condensation, when the conductor wire 4 is made of aluminum or an aluminum alloy, the crimp terminal 1 of the present embodiment suppresses galvanic corrosion of the aluminum electric wire. It is effective to do.
以上説明した実施形態では、薄膜層20を、第1先端部16およびその近傍部分と、第2先端部17およびその近傍部分とに設けた構成につき説明したが、薄膜層20は、一対のインシュレーションバレル13の一対の先端部15およびその近傍部分にも設けてもよい。   In the above-described embodiment, the thin film layer 20 has been described with respect to the configuration in which the thin film layer 20 is provided in the first tip portion 16 and the vicinity thereof, and the second tip portion 17 and the vicinity thereof. You may provide also in a pair of front-end | tip part 15 of the modulation barrel 13, and its vicinity part.
1 圧着端子
2 電線
3 絶縁被覆
4 導体線
7 電気接触部
9 電線圧着部
10 底壁
11 ワイヤバレル
13 インシュレーションバレル
14 連続壁
16 第1先端部
17 第2先端部
18 内面
19 外面
20 薄膜層(接触層)
DESCRIPTION OF SYMBOLS 1 Crimp terminal 2 Electric wire 3 Insulation coating 4 Conductor wire 7 Electrical contact part 9 Electrical wire crimp part 10 Bottom wall 11 Wire barrel 13 Insulation barrel 14 Continuous wall 16 1st front-end | tip part 17 2nd front-end | tip part 18 Inner surface 19 Outer surface 20 Thin film layer ( Contact layer)

Claims (6)

  1. 複数の導体線が絶縁体で被覆される被覆部分と、端末において前記導体線が露出する露出部分とを有する電線の該端末に圧着される圧着端子であって、
    前記電線が載置される底壁と、
    前記底壁から立ち上がり、前記露出部分に圧着されるように曲げ加工される一対のワイヤバレルと、
    前記底壁から立ち上がり、前記被覆部分に圧着されるように曲げ加工される一対のインシュレーションバレルと、
    前記一対のワイヤバレルから前記一対のインシュレーションバレルにかけて連続して形成されており、前記一対のワイヤバレルと前記一対のインシュレーションバレルとの間の部分を覆うように曲げ加工される一対の連続壁と、
    を備え、
    前記一対のワイヤバレルおよび一対の連続壁は金属材料からなり、
    前記一対のワイヤバレルは、前記曲げ加工に伴い互いに接触する一対の第1接触部を有しており、
    前記一対の連続壁は、前記曲げ加工に伴い互いに接触する一対の第2接触部を有しており、
    前記一対の第1接触部および一対の第2接触部のそれぞれには、互いに接触したときの密着度が前記金属材料よりも高い材料からなる接触層が設けられている圧着端子。
    A crimping terminal to be crimped to the terminal of the electric wire having a covering portion where a plurality of conductor wires are coated with an insulator and an exposed portion where the conductor wire is exposed at the terminal;
    A bottom wall on which the electric wire is placed;
    A pair of wire barrels that are bent so as to rise from the bottom wall and be crimped to the exposed portion;
    A pair of insulation barrels that are bent so as to rise from the bottom wall and be crimped to the covering portion;
    A pair of continuous walls formed continuously from the pair of wire barrels to the pair of insulation barrels and bent so as to cover a portion between the pair of wire barrels and the pair of insulation barrels. When,
    With
    The pair of wire barrels and the pair of continuous walls are made of a metal material,
    The pair of wire barrels has a pair of first contact portions that come into contact with each other along the bending process,
    The pair of continuous walls have a pair of second contact portions that come into contact with each other along the bending process,
    Each of the pair of first contact portions and the pair of second contact portions is a crimp terminal provided with a contact layer made of a material having a higher degree of adhesion when contacting each other than the metal material.
  2. 請求項1に記載の圧着端子において、前記一対の第1接触部は、前記底壁とは反対側に位置し、前記曲げ加工の際に互いに接触する一対の第1先端部からなり、
    前記一対の第2接触部は、前記底壁とは反対側に位置し、前記曲げ加工の際に互いに接触する一対の第2先端部からなる圧着端子。
    2. The crimp terminal according to claim 1, wherein the pair of first contact portions is located on a side opposite to the bottom wall and includes a pair of first tip portions that are in contact with each other during the bending process,
    The pair of second contact portions are located on the side opposite to the bottom wall, and are crimp terminals including a pair of second tip portions that are in contact with each other during the bending process.
  3. 請求項1または2に記載の圧着端子において、前記接触層は樹脂層である圧着端子。   The crimp terminal according to claim 1 or 2, wherein the contact layer is a resin layer.
  4. 複数の導体線が絶縁体で被覆される被覆部分と、端末において前記導体線が露出する露出部分とを有する電線と、
    前記電線の前記端末に圧着される請求項1〜3のいずれか一項に記載の圧着端子と、
    を備え、
    前記圧着端子が前記電線の前記端末に圧着された圧着状態において、一対のワイヤバレルは、一対の第1接触部が互いに接触した状態で前記電線の前記露出部分の一部分に圧着されており、一対のインシュレーションバレルは、前記電線の前記被覆部分に圧着されており、一対の連続壁は、一対の第2接触部が互いに接触した状態で前記一対のワイヤバレルと前記一対のインシュレーションバレルとの間で前記露出部分の残り部分に圧着されている端子付き電線。
    An electric wire having a covering portion where a plurality of conductor wires are covered with an insulator, and an exposed portion where the conductor wires are exposed at a terminal;
    The crimp terminal according to any one of claims 1 to 3, which is crimped to the terminal of the electric wire,
    With
    In the crimped state in which the crimp terminal is crimped to the end of the electric wire, the pair of wire barrels are crimped to a part of the exposed portion of the electric wire with the pair of first contact portions in contact with each other. The insulation barrel is crimped to the covering portion of the electric wire, and the pair of continuous walls are formed between the pair of wire barrels and the pair of insulation barrels in a state where the pair of second contact portions are in contact with each other. An electric wire with a terminal that is crimped to the remaining portion of the exposed portion.
  5. 請求項4に記載の端子付き電線において、前記圧着端子は、所定形状に打ち抜いた1枚の金属板に曲げ加工を施すことにより成形されており、
    前記金属板における前記一対の第1接触部および前記一対の第2接触部に対応する部分には、樹脂層が接着または塗布により設けられている端子付き電線。
    The electric wire with a terminal according to claim 4, wherein the crimp terminal is formed by bending a single metal plate punched into a predetermined shape,
    The electric wire with a terminal by which the resin layer is provided in the part corresponding to the pair of 1st contact parts and the pair of 2nd contact parts in the metal plate by adhesion or application.
  6. 請求項4に記載の端子付き電線において、前記導体線がアルミニウムまたはアルミニウム合金からなる端子付き電線。   The electric wire with a terminal according to claim 4, wherein the conductor wire is made of aluminum or an aluminum alloy.
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JP5480087B2 (en) * 2010-09-27 2014-04-23 古河電気工業株式会社 Crimp terminal, connection structure and connector
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