JP2019197653A - Manufacturing method of terminal-equipped electric wire - Google Patents
Manufacturing method of terminal-equipped electric wire Download PDFInfo
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- JP2019197653A JP2019197653A JP2018090865A JP2018090865A JP2019197653A JP 2019197653 A JP2019197653 A JP 2019197653A JP 2018090865 A JP2018090865 A JP 2018090865A JP 2018090865 A JP2018090865 A JP 2018090865A JP 2019197653 A JP2019197653 A JP 2019197653A
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Abstract
Description
本発明は例えば自動車等に用いられる端子付き電線の製造方法に関するものである。 The present invention relates to a method for manufacturing a terminal-attached electric wire used in, for example, an automobile.
従来、自動車、ＯＡ機器、家電製品等の分野では、電力線や信号線として、電気導電性に優れた銅系材料からなる電線が使用されている。特に、自動車分野においては、車両の高性能化、高機能化が急速に進められており、車載される各種電気機器や制御機器が増加している。したがって、これに伴い、使用される端子付き電線も増加する傾向にある。 Conventionally, in fields such as automobiles, OA equipment, and home appliances, electric wires made of copper-based materials having excellent electrical conductivity have been used as power lines and signal lines. In particular, in the automobile field, the performance and functionality of vehicles are rapidly increasing, and various electric devices and control devices mounted on the vehicle are increasing. Therefore, the electric wire with a terminal used in this tends to increase.
一方、環境問題が注目される中、自動車の軽量化が要求されている。したがって、ワイヤハーネスの使用量増加に伴う重量増加が問題となる。このため、従来使用されている銅線に代えて、軽量なアルミニウム電線が注目されている。 On the other hand, while environmental problems are attracting attention, the weight reduction of automobiles is required. Therefore, an increase in weight accompanying an increase in the amount of wire harness used becomes a problem. For this reason, it replaces with the copper wire currently used conventionally and the lightweight aluminum electric wire attracts attention.
ここで、このような電線同士を接続する際や機器類等の接続部においては、接続用端子が用いられる。しかし、アルミニウム電線を用いた端子付き電線であっても、接続部の信頼性等のため、端子部には、電気特性に優れる銅が使用される場合がある。このような場合には、アルミニウム電線と銅製の端子とが接合されて使用される。 Here, a connection terminal is used when connecting such electric wires or in a connection portion such as a device. However, even if it is an electric wire with a terminal using an aluminum electric wire, copper which is excellent in an electrical property may be used for a terminal part for reliability of a connection part. In such a case, an aluminum electric wire and a copper terminal are joined and used.
しかし、異種金属を接触させると、標準電極電位の違いから、いわゆる電食が発生する恐れがある。特に、アルミニウムと銅との標準電極電位差は大きいため、接触部への水の飛散や結露等の影響により、電気的に卑であるアルミニウム側の腐食が進行する。このため、接続部における電線と端子との接続状態が不安定となり、接触抵抗の増加や線径の減少による電気抵抗の増大、更には断線が生じて電装部品の誤動作、機能停止に至る恐れがある。 However, when different metals are brought into contact, so-called electrolytic corrosion may occur due to the difference in standard electrode potential. In particular, since the standard electrode potential difference between aluminum and copper is large, corrosion on the aluminum side, which is electrically base, progresses due to the influence of water scattering and condensation on the contact portion. For this reason, the connection state between the electric wire and the terminal at the connection portion becomes unstable, and there is a risk that the electrical resistance increases due to an increase in contact resistance or a decrease in wire diameter, and further, the disconnection may occur, resulting in malfunction of the electrical component or stop of the function. is there.
このため、電線と端子との接続部を防食材で被覆する方法が提案されている。図６は、防食材で接続部が被覆された端子付き電線１００を示す断面図である。端子付き電線１００は、端子１０１と被覆導線１１１が接続されて構成される。 For this reason, the method of coat | covering the connection part of an electric wire and a terminal with a corrosion prevention material is proposed. FIG. 6 is a cross-sectional view showing the terminal-attached electric wire 100 whose connecting portion is covered with an anticorrosive material. The terminal-attached electric wire 100 is configured by connecting a terminal 101 and a covered conductor 111.
被覆導線１１１は、アルミニウムまたはアルミニウム合金製である導線１１３と、導線１１３を被覆する被覆部１１５からなる。また、端子１０１は、オープンバレル型であり、銅または銅合金製である。端子１０１は、端子本体１０３と圧着部とが連結されて構成される。 The covered conductive wire 111 includes a conductive wire 113 made of aluminum or an aluminum alloy and a covering portion 115 that covers the conductive wire 113. Moreover, the terminal 101 is an open barrel type and is made of copper or a copper alloy. The terminal 101 is configured by connecting a terminal body 103 and a crimping portion.
端子１０１の圧着部は、被覆導線１１１の先端側に被覆部１１５から露出する導線１１３を圧着する導線圧着部１０７と、被覆導線１１１の被覆部１１５を圧着する被覆圧着部１０９と、導線圧着部１０７と被覆圧着部１０９の間のバレル間部１０８からなる。また、被覆圧着部１０９から導線圧着部１０７にかけて、被覆部１１５から露出する導線１１３は、防食材１１７で覆われる。 The crimp portion of the terminal 101 includes a lead crimp portion 107 that crimps the conductor wire 113 exposed from the sheath portion 115 to the distal end side of the sheath conductor wire 111, a sheath crimp portion 109 that crimps the sheath portion 115 of the sheath conductor wire 111, and a conductor crimp portion. It consists of an inter-barrel portion 108 between 107 and the cover crimping portion 109. Further, the conductive wire 113 exposed from the covering portion 115 from the covering crimping portion 109 to the conductive wire crimping portion 107 is covered with the anticorrosion material 117.
図７（ａ）は、Ｘ部における防食材１１７の塗布直後の状態を示す概念図である。被覆導線１１１と端子１０１の圧着部とを圧着した後、防食材１１７が塗布される。ここで、図７（ａ）に示すように、被覆部１１５の先端部においては、圧着部と導線１１３との間に隙間１０５が形成される。しかし、防食材１１７の粘度が高いと、防食材１１７が導線１１３の各素線間を通って隙間１０５まで浸透することができず、隙間１０５を防食材１１７で埋めることができない。この場合には、被覆部１１５と圧着部との隙間から水が導線圧着部１０７へ浸入するおそれがある。 Fig.7 (a) is a conceptual diagram which shows the state immediately after application | coating of the anticorrosion material 117 in X part. After crimping the coated conductor 111 and the crimping portion of the terminal 101, the anticorrosion material 117 is applied. Here, as shown in FIG. 7A, a gap 105 is formed between the crimping portion and the conductive wire 113 at the tip of the covering portion 115. However, when the viscosity of the anticorrosion material 117 is high, the anticorrosion material 117 cannot penetrate between the strands of the conductive wire 113 to the gap 105, and the gap 105 cannot be filled with the anticorrosion material 117. In this case, water may enter the lead wire crimping portion 107 from the gap between the covering portion 115 and the crimping portion.
このような問題に鑑み、低粘度の防食材を塗布する方法が提案されている（例えば、特許文献１）。 In view of such a problem, a method of applying a low-viscosity anticorrosive material has been proposed (for example, Patent Document 1).
また、防食材を塗布した後に、防食材を加熱して粘度を下げる方法が提案されている（特許文献２）。 Moreover, after apply | coating an anticorrosion material, the method of heating an anticorrosion material and reducing a viscosity is proposed (patent document 2).
図７（ｂ）は、粘度の低い防食材１１７を塗布した際の状態を示す概念図である。図７（ｂ）に示すように、防食材１１７を塗布すると、直ちに素線間を通過して（図中矢印Ｙ）、隙間１０５まで浸透する。したがって、隙間１０５を埋めることができる。 FIG.7 (b) is a conceptual diagram which shows the state at the time of apply | coating the anticorrosion material 117 with a low viscosity. As shown in FIG. 7B, when the anticorrosive material 117 is applied, it immediately passes between the strands (arrow Y in the figure) and penetrates to the gap 105. Therefore, the gap 105 can be filled.
しかし、図７（ｃ）に示すように、防食材１１７の粘度が低いと、防食材１１７は、導線１１３の各素線間の微小な隙間に毛細管現象によって浸透していく。このため、一度隙間１０５に浸透した防食材１１７が時間とともに吸い上げられて、素線間へ流れていく（図中矢印Ｚ）。この結果、隙間１０５における防食材１１７の量が不足し、隙間１０５における導線１１３を防食材１１７で十分に被覆することができなくなる。 However, as shown in FIG. 7C, when the viscosity of the anticorrosion material 117 is low, the anticorrosion material 117 penetrates into the minute gaps between the individual wires of the conducting wire 113 by capillary action. For this reason, the anticorrosion material 117 which has once penetrated into the gap 105 is sucked up with time and flows between the strands (arrow Z in the figure). As a result, the amount of the anticorrosion material 117 in the gap 105 is insufficient, and the lead wire 113 in the gap 105 cannot be sufficiently covered with the anticorrosion material 117.
なお、特許文献２のように、加熱によって防食材１１７の粘度を下げた場合には、その後、防食材１１７の温度の低下に伴い、防食材の粘度は上昇する。しかし、端子１０１および導線１１３を加熱した後に、全体の温度が低下するまでは時間を要し、製造のタクトタイムが増加する。このため、より短時間で製造する方法が求められている。 In addition, like the patent document 2, when the viscosity of the anticorrosion material 117 is lowered by heating, the viscosity of the anticorrosion material increases with a decrease in the temperature of the anticorrosion material 117 thereafter. However, after the terminal 101 and the conductive wire 113 are heated, it takes time until the overall temperature is lowered, and the manufacturing tact time is increased. For this reason, the method of manufacturing in a shorter time is calculated | required.
また、特許文献２は、防食材１１７が低粘度である時間が長いため、その間における防食材１１７の流出を防ぐことはできない。特に、端子付き電線の加熱と防食材の塗布を繰り返すことで、端子付き電線が配置される部位の温度が徐々に上昇するため、冷却の際の温度勾配が安定せず、防食材１１７の粘度を十分に制御することができない。 Moreover, since patent document 2 has a long time when the anticorrosion material 117 is low-viscosity, it cannot prevent the anticorrosion material 117 from flowing out during that time. In particular, by repeating heating of the electric wire with terminal and application of the anticorrosive material, the temperature of the portion where the electric wire with terminal is disposed gradually increases, so the temperature gradient during cooling is not stable, and the viscosity of the anticorrosive material 117 is increased. Cannot be fully controlled.
本発明は、このような問題に鑑みてなされたもので、短時間で製造することが可能であり、導線の裏側の隙間も防食材で被覆することが可能な端子付き電線の製造方法を提供することを目的とする。 The present invention has been made in view of such problems, and provides a method of manufacturing a terminal-attached electric wire that can be manufactured in a short time and can cover a gap on the back side of a conductive wire with an anticorrosive material. The purpose is to do.
前述した目的を達するために本発明は、被覆導線と端子とが接続される端子付き電線の製造方法であって、前記被覆導線は、被覆部と、前記被覆部の先端から露出する複数の素線からなる導線とを具備し、前記端子の圧着部に前記被覆導線を圧着する工程と、前記被覆導線が圧着された前記端子を、所定の温度に設定された第１温度制御部に配置する工程と、前記被覆部から前記導線が露出する部位の少なくとも一部に防食材を塗布する工程と、前記防食材の塗布後直ちに、前記被覆導線が圧着された前記端子を、前記第１温度制御部よりも低い温度に設定された第２温度制御部に配置する工程と、前記防食材を硬化させる工程と、を具備することを特徴とする端子付き電線の製造方法である。 In order to achieve the above-described object, the present invention provides a method of manufacturing a terminal-attached electric wire in which a coated conductor and a terminal are connected, and the coated conductor includes a coating portion and a plurality of elements exposed from the tip of the coating portion. And a step of crimping the coated conductor to the crimping portion of the terminal, and the terminal to which the coated conductor is crimped is disposed in a first temperature control unit set to a predetermined temperature. A step of applying an anticorrosive material to at least a part of a portion where the conductive wire is exposed from the covering portion; and the terminal to which the coated conductive wire is crimped immediately after the application of the anticorrosive material, the first temperature control. It is the manufacturing method of the electric wire with a terminal characterized by including the process arrange | positioned in the 2nd temperature control part set to the temperature lower than a part, and the process of hardening | curing the said anticorrosion material.
前記防食材は、前記被覆部から前記導線が露出する部位の全体に塗布されることが望ましい。 It is preferable that the anticorrosive material is applied to the entire portion where the conductive wire is exposed from the covering portion.
前記第１温度制御部と前記第２温度制御部との設定温度差が、４０℃〜８０℃であることが望ましい。 It is preferable that a set temperature difference between the first temperature control unit and the second temperature control unit is 40 ° C to 80 ° C.
前記第１温度制御部の設定温度における前記防食材の粘度が、３００ｍＰａ・ｓ以下であることが望ましい。 It is desirable that the anticorrosive material has a viscosity of 300 mPa · s or less at a set temperature of the first temperature control unit.
前記第２温度制御部の設定温度における前記防食材の粘度が、３００ｍＰａ・ｓ超であることが望ましい。 It is desirable that the viscosity of the anticorrosive material at a set temperature of the second temperature control unit is more than 300 mPa · s.
前記防食材が、紫外線硬化樹脂であることが望ましい。 The anticorrosive material is preferably an ultraviolet curable resin.
本発明によれば、端子を所定の温度に加熱することで、塗布した防食材の粘度を下げることができ、防食材を効率よく導線の裏側まで浸透させることができる。このため、導線裏側の隙間においても、導線を防食材で被覆することができる。また、その後直ちに、冷却温度に設定された第２温度制御部に端子を配置することで、端子を速やかに一定の速度で冷却することができ、防食材の粘度を上昇させることができるため、防食材の流出を抑制することができる。 According to the present invention, by heating the terminal to a predetermined temperature, the viscosity of the applied anticorrosive material can be lowered, and the anticorrosive material can be efficiently penetrated to the back side of the conductor. For this reason, even in the gap on the back side of the conductor, the conductor can be covered with the anticorrosive material. In addition, immediately after that, by arranging the terminal in the second temperature control unit set to the cooling temperature, the terminal can be quickly cooled at a constant speed, and the viscosity of the anticorrosive can be increased. The outflow of the anticorrosive material can be suppressed.
この際、防食材を被覆部から露出する導線の全体に塗布することで、より高い防食性を確保することができる。 At this time, higher anticorrosion properties can be ensured by applying the anticorrosive material to the entire conductor exposed from the covering portion.
また、第１温度制御部と第２温度制御部との設定温度差を４０℃〜８０℃の範囲とすることで、防食材の粘度の差を有効に利用することができるとともに、防食材の劣化も抑制することができる。 Moreover, while making the setting temperature difference of a 1st temperature control part and a 2nd temperature control part into the range of 40 to 80 degreeC, while being able to utilize effectively the difference in the viscosity of an anticorrosive, Deterioration can also be suppressed.
また、防食材の粘度が３００ｍＰａ・ｓ以下となるように第１温度制御部の温度を設定することで、確実に防食材を導線に浸透させることができる。 Moreover, by setting the temperature of the first temperature control unit so that the viscosity of the anticorrosive material is 300 mPa · s or less, the anticorrosive material can be reliably infiltrated into the conductor.
また、防食材の粘度が３００ｍＰａ・ｓ超となるように第２温度制御部の温度を設定することで、確実に防食材の流出を抑制することができる。 Further, by setting the temperature of the second temperature control unit so that the viscosity of the anticorrosive material exceeds 300 mPa · s, the outflow of the anticorrosive material can be reliably suppressed.
また、防食材が紫外線硬化樹脂であれば、紫外線の照射によって容易に防食材を硬化させることができる。 Further, if the anticorrosive material is an ultraviolet curable resin, the anticorrosive material can be easily cured by irradiation with ultraviolet rays.
本発明によれば、短時間で製造することが可能であり、導線の裏側の隙間も防食材で被覆することが可能な端子付き電線の製造方法を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the electric wire with a terminal which can be manufactured in a short time and can coat | cover the clearance gap on the back side of conducting wire with an anticorrosion material can be provided.
以下、図面を参照しながら、本発明の実施形態について説明する。図１は、端子付き電線１０を示す斜視図であり、図２は断面図である。なお、図１は、防食材１７を透視した図である。端子付き電線１０は、端子１と被覆導線１１が接続されて構成される。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an electric wire 10 with a terminal, and FIG. 2 is a cross-sectional view. FIG. 1 is a perspective view of the anticorrosive material 17. The terminal-attached electric wire 10 is configured by connecting the terminal 1 and the covered conductor 11.
被覆導線１１は、アルミニウムまたはアルミニウム合金製である導線１３と、導線１３を被覆する被覆部１５からなる。すなわち、被覆導線１１は、被覆部１５と、その先端から露出する導線１３とを具備する。導線１３は、例えば、複数の素線が撚り合わせられた撚り線である。 The covered conducting wire 11 includes a conducting wire 13 made of aluminum or an aluminum alloy and a covering portion 15 that covers the conducting wire 13. That is, the covered conducting wire 11 includes a covering portion 15 and a conducting wire 13 exposed from the tip. The conducting wire 13 is, for example, a stranded wire in which a plurality of strands are twisted together.
端子１は、オープンバレル型であり、銅または銅合金製である。端子１には被覆導線１１が接続される。端子１は、端子本体３と圧着部５とがトランジション部４を介して連結されて構成される。圧着部５と端子本体３の間に位置するトランジション部４は、上方が開口する。 The terminal 1 is an open barrel type and is made of copper or a copper alloy. A coated conductor 11 is connected to the terminal 1. The terminal 1 is configured by connecting a terminal main body 3 and a crimping part 5 via a transition part 4. The transition part 4 located between the crimping part 5 and the terminal body 3 is open at the top.
端子本体３は、所定の形状の板状素材を、断面が矩形の筒体に形成したものである。端子本体３は、内部に、板状素材を矩形の筒体内に折り込んで形成される弾性接触片を有する。端子本体３は、前端部から雄型端子などが挿入されて接続される。なお、以下の説明では、端子本体３が、雄型端子等の挿入タブ（図示省略）の挿入を許容する雌型端子である例を示すが、本発明において、この端子本体３の細部の形状は特に限定されない。例えば、雌型の端子本体３に代えて例えば雄型端子の挿入タブを設けてもよい。 The terminal body 3 is formed by forming a plate-shaped material having a predetermined shape into a cylindrical body having a rectangular cross section. The terminal body 3 has an elastic contact piece formed by folding a plate-shaped material into a rectangular cylinder. The terminal body 3 is connected by inserting a male terminal or the like from the front end. In the following description, an example is shown in which the terminal body 3 is a female terminal that allows insertion of an insertion tab (not shown) such as a male terminal. In the present invention, the detailed shape of the terminal body 3 is shown. Is not particularly limited. For example, instead of the female terminal body 3, for example, a male terminal insertion tab may be provided.
圧着部５は、被覆導線１１と圧着される部位であり、圧着前においては、端子１の長手方向に垂直な断面形状が略Ｕ字状のバレル形状を有する。端子１の圧着部５は、被覆導線１１の先端側に被覆部１５から露出する導線１３を圧着する導線圧着部７と、被覆導線１１の被覆部１５を圧着する被覆圧着部９と、導線圧着部７と被覆圧着部９の間のバレル間部８からなる。 The crimping part 5 is a part to be crimped to the coated conductor 11, and has a barrel shape in which a cross-sectional shape perpendicular to the longitudinal direction of the terminal 1 is substantially U-shaped before crimping. The crimping portion 5 of the terminal 1 includes a lead crimping portion 7 for crimping the lead wire 13 exposed from the sheathing portion 15 to the distal end side of the sheathed conductor 11, a sheath crimping portion 9 for crimping the sheathing portion 15 of the sheathed conductor 11, and a lead crimping. It consists of the part 8 between the barrels between the part 7 and the covering crimping part 9.
導線圧着部７の内面の一部には、幅方向（長手方向に垂直な方向）に、図示を省略したセレーションが設けられる。このようにセレーションを形成することで、導線１３を圧着した際に、導線１３の表面の酸化膜を破壊しやすく、また、導線１３との接触面積を増加させることができる。 A serration (not shown) is provided in a part of the inner surface of the conductor crimping portion 7 in the width direction (direction perpendicular to the longitudinal direction). By forming serrations in this way, when the conducting wire 13 is crimped, the oxide film on the surface of the conducting wire 13 can be easily broken, and the contact area with the conducting wire 13 can be increased.
被覆導線１１の先端は、被覆部１５が剥離され、内部の導線１３が露出する。被覆導線１１の被覆部１５は、端子１の被覆圧着部９によって圧着される。また、被覆部１５が剥離されて露出する導線１３は、導線圧着部７により圧着される。導線圧着部７において、導線１３と端子１とが電気的に接続される。なお、被覆部１５の端面は、被覆圧着部９と導線圧着部７の間のバレル間部８に位置する。 The coating 15 is peeled off from the tip of the coated conductor 11 to expose the inner conductor 13. The covering portion 15 of the covered conductor 11 is crimped by the covering crimp portion 9 of the terminal 1. Further, the conductive wire 13 exposed by peeling off the covering portion 15 is crimped by the conductive wire crimping portion 7. In the lead wire crimping portion 7, the lead wire 13 and the terminal 1 are electrically connected. Note that the end face of the covering portion 15 is located in the barrel-to-barrel portion 8 between the covering pressure-bonding portion 9 and the conductive wire crimping portion 7.
本発明では、少なくとも、被覆部１５から露出する導線１３の全体が、防食材１７で覆われることが望ましい。すなわち、少なくとも、バレル間部８から導線圧着部７までの導線１３が露出する部位が防食材１７で覆われており、導線１３は、防食材１７によって外部に露出しないことが望ましい。 In the present invention, it is desirable that at least the entire conductive wire 13 exposed from the covering portion 15 is covered with the anticorrosive material 17. That is, it is desirable that at least a portion where the conductive wire 13 from the inter-barrel portion 8 to the conductive wire crimping portion 7 is exposed is covered with the anticorrosive material 17 and the conductive wire 13 is not exposed to the outside by the anticorrosive material 17.
なお、防食材１７は、例えば、ウレタンアクリレートなどの紫外線硬化樹脂であることが望ましい。 The anticorrosion material 17 is desirably an ultraviolet curable resin such as urethane acrylate, for example.
次に、端子付き電線１０の製造方法について説明する。まず、端子１の圧着部５に被覆導線１１を圧着により接続する。次に、図３（ａ）に示すように、被覆導線１１が圧着された端子１を、所定の温度に設定された第１温度制御部１９ａに配置する。すなわち、被覆導線１１が圧着された端子１が、所定の温度に昇温される。なお、第１温度制御部１９ａの設定温度としては、後述する防食材１７の粘度が、３００ｍＰａ・ｓ以下となるように温度設定することが望ましい。また、第１温度制御部１９ａの設定温度としては、１１０℃未満であることが望ましい。１１０℃以上となると、防食材１７を塗布した際に劣化する恐れがある。なお、第１温度制御部１９ａの温度制御は、例えばヒータによって±５℃程度の範囲で制御される。 Next, the manufacturing method of the electric wire 10 with a terminal is demonstrated. First, the covered conducting wire 11 is connected to the crimping part 5 of the terminal 1 by crimping. Next, as shown to Fig.3 (a), the terminal 1 to which the covered conducting wire 11 was crimped | bonded is arrange | positioned at the 1st temperature control part 19a set to predetermined temperature. That is, the terminal 1 to which the coated conducting wire 11 is crimped is heated to a predetermined temperature. In addition, as temperature setting of the 1st temperature control part 19a, it is desirable to set temperature so that the viscosity of the anticorrosion material 17 mentioned later may be 300 mPa * s or less. The set temperature of the first temperature control unit 19a is preferably less than 110 ° C. When it becomes 110 degreeC or more, there exists a possibility that it may deteriorate, when the anticorrosion material 17 is apply | coated. The temperature control of the first temperature control unit 19a is controlled in a range of about ± 5 ° C. by a heater, for example.
次に、図３（ｂ）に示すように、所定温度に加熱された被覆導線１１が圧着された端子１に対し、被覆部１５から導線１３が露出する部位の少なくとも一部に防食材１７を塗布する。より具体的には、少なくとも、バレル間部８における導線１３の露出部に、防食材１７を塗布する。なお、前述したように、導線１３が露出する部位の全体に防食材１７を塗布することが望ましい。防食材１７の塗布は、短時間に塗布を行うため、ジェットディスペンサ等が用いられる。 Next, as shown in FIG. 3 (b), an anticorrosive material 17 is applied to at least a part of a portion where the lead wire 13 is exposed from the covering portion 15 with respect to the terminal 1 to which the covered lead wire 11 heated to a predetermined temperature is crimped. Apply. More specifically, the anticorrosion material 17 is applied to at least the exposed portion of the conductive wire 13 in the inter-barrel portion 8. As described above, it is desirable to apply the anticorrosion material 17 to the entire portion where the conductive wire 13 is exposed. In order to apply the anticorrosive material 17 in a short time, a jet dispenser or the like is used.
防食材１７を塗布すると、その後直ちに、図３（ｃ）に示すように、被覆導線１１が圧着された端子１を、第２温度制御部１９ｂに移動させて配置する。例えば、防食材１７が塗布された側（上面）と反対側の面（裏面）が第２温度制御部１９ｂと接触するように端子１を第２温度制御部１９ｂに配置する。第２温度制御部は、第１温度制御部よりも低い温度に設定されている。すなわち、被覆導線１１が圧着された端子１および防食材１７が、所定の温度に冷却される。なお、第２温度制御部１９ｂの温度制御は、例えば冷却部材（ヒートシンクやファンなど）単体、ヒータ単体、またはヒータと冷却部材の併用によって±５℃程度の範囲で制御される。 When the anticorrosion material 17 is applied, immediately after that, as shown in FIG. 3C, the terminal 1 to which the coated conducting wire 11 is crimped is moved to the second temperature control unit 19b and arranged. For example, the terminal 1 is arranged in the second temperature control unit 19b so that the surface (back surface) opposite to the side (upper surface) coated with the anticorrosive material 17 is in contact with the second temperature control unit 19b. The second temperature control unit is set to a temperature lower than that of the first temperature control unit. That is, the terminal 1 and the anticorrosion material 17 to which the coated conducting wire 11 is crimped are cooled to a predetermined temperature. The temperature control of the second temperature control unit 19b is controlled in a range of about ± 5 ° C. by, for example, a cooling member (such as a heat sink or a fan) alone, a heater alone, or a combination of a heater and a cooling member.
図４は、上述した工程における端子１（防食材１７）の温度変化を示す概念図であり、縦軸は温度、横軸は時間である。前述したように、防食材１７を塗布する前に、端子１等は第１温度制御部１９ａによって設定温度Ｔ１に昇温される。この状態で、防食材１７が塗布されるため、防食材１７も直ちにＴ１に昇温される。 FIG. 4 is a conceptual diagram showing a temperature change of the terminal 1 (corrosion-preventing material 17) in the above-described process, where the vertical axis is temperature and the horizontal axis is time. As described above, before the anticorrosion material 17 is applied, the terminal 1 and the like are heated to the set temperature T1 by the first temperature control unit 19a. In this state, since the anticorrosion material 17 is applied, the anticorrosion material 17 is also immediately heated to T1.
防食材１７の塗布が完了した時点（図中ｔ１）から直ちに、端子１等が第２温度制御部１９ｂによって設定温度Ｔ２に冷却される。この際、第１温度制御部１９ａと第２温度制御部１９ｂとの設定温度差（図中ΔＴ）としては、４０℃〜８０℃であることが望ましく、より望ましくは６０℃〜８０℃である。 Immediately after the application of the anticorrosive material 17 is completed (t1 in the figure), the terminal 1 and the like are cooled to the set temperature T2 by the second temperature controller 19b. At this time, the set temperature difference (ΔT in the figure) between the first temperature control unit 19a and the second temperature control unit 19b is desirably 40 ° C. to 80 ° C., and more desirably 60 ° C. to 80 ° C. .
ここで、防食材１７は温度によって粘度が変化する。防食材１７の粘度が３００ｍＰａ・ｓとなる温度をＴ３とすると、Ｔ１≧Ｔ３＞Ｔ２の関係となる。すなわち、第１温度制御部１９ａによって設定温度Ｔ１では、防食材１７は、粘度が３００ｍＰａ・ｓ以下であり、第２温度制御部１９ｂの設定温度Ｔ２における防食材１７の粘度は、３００ｍＰａ・ｓ超となる。 Here, the viscosity of the anticorrosive material 17 varies depending on the temperature. When the temperature at which the viscosity of the anticorrosive material 17 is 300 mPa · s is T3, the relationship of T1 ≧ T3> T2 is established. That is, at the set temperature T1 by the first temperature control unit 19a, the anti-corrosion material 17 has a viscosity of 300 mPa · s or less, and the viscosity of the anti-corrosion material 17 at the set temperature T2 of the second temperature control unit 19b exceeds 300 mPa · s. It becomes.
前述したように、防食材１７の塗布した時点（ｔ１）から、防食材１７の粘度が３００ｍＰａ・ｓ超となる時点（ｔ２）までの時間（図中Ａ）が長すぎると、防食材１７の流出が生じる。このため、この時間Ａを安定して所定の時間に設定することで、効率よく防食材１７を導線１３の裏側まで塗布することができる。 As described above, if the time (A in the figure) from the time point (t1) when the anticorrosive material 17 is applied to the time point (t2) when the viscosity of the anticorrosive material 17 exceeds 300 mPa · s is too long, the anticorrosive material 17 An outflow occurs. For this reason, the anticorrosion material 17 can be efficiently applied to the back side of the conductive wire 13 by stably setting the time A to a predetermined time.
なお、通常、粘度が３００ｍＰａ・ｓ以下の防食材１７は、塗布後数秒（例えば１〜３秒以内）で導線１３の裏側まで浸透する。このため、防食材１７の塗布後１〜３秒後に粘度を３００ｍＰａ・ｓ超とすることが望ましい。したがって、時間Ａが１〜３秒程度となるように、防食材１７の材質に応じて、Ｔ１およびＴ２を設定すればよい。なお、防食材１７を塗布してから端子１等を第２温度制御部１９ｂへ移動するまでの時間や冷却の遅れ時間も考慮すると、本発明において、「防食材１７の塗布後直ちに」とは、例えば塗布後１秒以内であることが望ましい。 In general, the anticorrosion material 17 having a viscosity of 300 mPa · s or less penetrates to the back side of the conductive wire 13 several seconds after application (for example, within 1 to 3 seconds). For this reason, it is desirable that the viscosity be more than 300 mPa · s 1 to 3 seconds after the application of the anticorrosive material 17. Therefore, what is necessary is just to set T1 and T2 according to the material of the anticorrosion material 17 so that time A may be set to about 1-3 seconds. In addition, in the present invention, “immediately after the application of the anticorrosive material 17” is used in consideration of the time from the application of the anticorrosive material 17 to the time when the terminals 1 and the like are moved to the second temperature control unit 19b and the cooling delay time. For example, it is desirable to be within 1 second after application.
防食材１７の粘度が上昇して流出が抑制された後、防食材１７を紫外線の照射等によって硬化させる。なお、紫外線の照射は、端子１等を第２温度制御部１９ｂに配置した状態で行ってもよい。すなわち、防食材１７は、温度Ｔ２になってから硬化させてもよいが、温度Ｔ３を下回った状態となった段階で硬化させてもよい。このようにすることで、製造のタクトタイムを短くすることができる。 After the viscosity of the anticorrosion material 17 is increased and the outflow is suppressed, the anticorrosion material 17 is cured by irradiation of ultraviolet rays or the like. In addition, you may perform irradiation of an ultraviolet-ray in the state which has arrange | positioned the terminal 1 grade | etc., To the 2nd temperature control part 19b. That is, the anticorrosion material 17 may be cured after reaching the temperature T2, but may be cured when the temperature becomes lower than the temperature T3. By doing in this way, the tact time of manufacture can be shortened.
以上説明したように、本実施の形態によれば、低粘度の防食材１７を塗布して導線１３に浸透させた後、防食材１７の粘度を上げて、防食材１７が素線間に吸い上げられて流出することを抑制することができる。このため、確実に導線１３の裏側まで、防食材１７で被覆することができる。 As described above, according to the present embodiment, after applying the low-viscosity anticorrosive material 17 and infiltrating the conductor 13, the viscosity of the anticorrosive material 17 is increased, and the anticorrosive material 17 sucks up between the strands. It is possible to suppress the leakage. For this reason, it can coat | cover with the anticorrosion material 17 to the back side of the conducting wire 13 reliably.
また、防食材１７を塗布する前に端子１等を加熱しておくため、防食材１７の加熱時間は不要である。また、第２温度制御部１９ｂによって、確実に所定の温度に冷却することができる。特に、第１温度制御部１９ａと第２温度制御部１９ｂの温度差を４０℃〜８０℃とすることで、安定して所定の温度勾配で防食材１７を冷却することができる。このため、短時間で防食材１７の塗布から硬化までを行うことができる。 Moreover, since the terminal 1 etc. are heated before apply | coating the anticorrosion material 17, the heating time of the anticorrosion material 17 is unnecessary. In addition, the second temperature control unit 19b can reliably cool to a predetermined temperature. In particular, by setting the temperature difference between the first temperature control unit 19a and the second temperature control unit 19b to 40 ° C. to 80 ° C., the anticorrosion material 17 can be stably cooled with a predetermined temperature gradient. For this reason, it can perform from application | coating of the anti-corrosion material 17 to hardening in a short time.
次に、本発明に従う端子付き電線及び比較としての端子付き電線を試作し、各試料について試験を行ったので以下に説明する。 Next, since the electric wire with a terminal according to the present invention and the electric wire with a terminal as a comparison were made on a trial basis and each sample was tested, it will be described below.
（Ｎｏ．１）
まず、前述したように、端子に導線を圧着し、被覆部から露出する導線の全体に防食材を塗布して硬化させた。この際、従来のように、防食材を塗布後に、端子等を７０℃まで加熱し、その後自然に室温の２０℃まで冷却した後、防食材を硬化させた。なお、防食材としては、ウレタンアクリレートの紫外線硬化樹脂とした。
(No. 1)
First, as described above, a lead wire was pressure-bonded to the terminal, and an anticorrosive material was applied to the whole lead wire exposed from the covering portion and cured. At this time, as in the prior art, after applying the anticorrosive material, the terminals and the like were heated to 70 ° C., and then naturally cooled to 20 ° C. at room temperature, and then the anticorrosive material was cured. The anticorrosive material was urethane acrylate UV curable resin.
（Ｎｏ．２）
Ｎｏ．１に対して、前述の実施形態の様に、８０℃に設定された第１温度制御部１９ａに端子等を配置した後、防食材を塗布し、その後直ちに、設定温度２０℃の第２温度制御部に配置し、温度が２０℃まで下がってから防食材を硬化させた。
(No. 2)
No. 1, the terminal etc. are arranged in the first temperature control unit 19a set to 80 ° C. as in the above-described embodiment, and then the anticorrosive material is applied, and immediately thereafter, the second temperature of the set temperature 20 ° C. It arrange | positioned at a control part, and after the temperature fell to 20 degreeC, the anticorrosion material was hardened.
それぞれの端子付き電線について、樹脂の浸透性と防食性能を評価した。樹脂の浸透性は、導線の裏側の隙間において、導線の全体を被覆する樹脂の被覆厚が５０μｍ以上であるものを「〇」とし、一部に５０μｍ未満の部位があるものを「△」とし、一部に樹脂が浸透しておらず導線が露出する部位があったものを「×」とした。 About each electric wire with a terminal, resin permeability and anticorrosion performance were evaluated. The resin permeability is defined as “◯” when the coating thickness of the resin covering the entire conductor is 50 μm or more in the gap on the back side of the conductor, and “△” when there is a part less than 50 μm. The case where the resin was not partially penetrated and there was a portion where the conductive wire was exposed was designated as “x”.
また、防食性能は、正圧でのシール性（初期とサーマルショック試験後）によって評価した。正圧でのシール性は、端子付き電線の被覆導線から端子に向かって空気を送り、後端部から空気が漏れるか否かについて評価した。図５には、実験方法の概要を示す。実験は、水を入れた水槽２１中に端子付き電線の一端（端子１）を入れ、被覆導線１１の端部から端子１に向かってレギュレータ２２によって加圧空気を送った。なお、エア圧は３０ｋＰａとした。 Moreover, the anticorrosion performance was evaluated by the sealing performance (positive and after the thermal shock test) under positive pressure. The sealing performance under positive pressure was evaluated by checking whether air was sent from the coated conductor of the electric wire with terminal toward the terminal and air leaked from the rear end. FIG. 5 shows an outline of the experimental method. In the experiment, one end of a terminal-attached electric wire (terminal 1) was placed in a water tank 21 containing water, and pressurized air was sent from the end of the coated conductor 11 toward the terminal 1 by the regulator 22. The air pressure was 30 kPa.
サーマルショック試験は、それぞれの端子付き電線に対し、１２０℃×３０分〜−４０℃×３０分を５００サイクルとした。サーマルショック試験後の端子付き電線についても正圧でのシール性を評価した。サーマルショック試験後の正圧試験において、エアリークの見られなかったものを「〇」とし、サーマルショック試験前の正圧試験においてはエアリークが見られなかったが、サーマルショック試験後の正圧試験において、エアリークが見られたものを「△」とし、サーマルショック試験前の正圧試験において、エアリークが見られたものを「×」とした。結果を表１に示す。 In the thermal shock test, 500 cycles of 120 ° C. × 30 minutes to −40 ° C. × 30 minutes were performed for each terminal-attached electric wire. The sealing performance under positive pressure was also evaluated for the electric wires with terminals after the thermal shock test. In the positive pressure test after the thermal shock test, the case where no air leak was observed was marked as “◯”. In the positive pressure test before the thermal shock test, no air leak was observed, but in the positive pressure test after the thermal shock test. In the positive pressure test before the thermal shock test, the case where air leak was observed was indicated as “X”. The results are shown in Table 1.
表１に示すように、Ｎｏ．１は、加熱時間と冷却時間が長く、防食材の塗布から硬化までの時間が１６０秒要した。これに対し、Ｎｏ．２は、防食材塗布前に加熱が完了しており、防食材塗布後の冷却時間も短いため、防食材硬化までの時間が４０秒で済んだ。なお、前述したように、本実施例では、端子等が２０℃まで冷却された後に防食材を硬化させたが、防食材の硬化は、これよりも早く（前述した温度Ｔ３以下となった段階で）行うことができ、Ｎｏ．２では、防食材の塗布後５秒〜１０秒程度でも防食材を硬化させることができる。このように、本発明によれば、極めて短時間に端子付き電線を得ることができる。 As shown in Table 1, no. In No. 1, the heating time and the cooling time were long, and it took 160 seconds from application of the anticorrosive material to curing. In contrast, no. In No. 2, heating was completed before application of the anticorrosive material, and the cooling time after application of the anticorrosive material was short, so that the time required for curing the anticorrosive material was 40 seconds. Note that, as described above, in this example, the anticorrosion material was cured after the terminals and the like were cooled to 20 ° C., but the anticorrosion material was cured earlier than this (the stage where the temperature T3 or less was reached). No.). In 2, the anticorrosion material can be cured even about 5 to 10 seconds after application of the anticorrosion material. Thus, according to the present invention, a terminal-attached electric wire can be obtained in a very short time.
また、Ｎ０．１は、防食材塗布後に加熱を開始し、その後の冷却も遅いため、防食材が低粘度である時間が長い。このため、防食材が素線間に流出し、樹脂浸透性が×となった。このため、防食性能も×となった。一方、Ｎｏ．２は、先に端子等を加熱した状態で防食材を塗布し、防食材の塗布後直ちに冷却させたため、防食材の流出を抑制することができた。このため、短時間に製造することができるとともに、樹脂浸透性および防食性能が○となった。 Moreover, since N0.1 starts heating after applying the anticorrosive material, and the subsequent cooling is also slow, the anticorrosive material has a low viscosity for a long time. For this reason, the anticorrosive material flowed out between the strands, and the resin permeability became x. For this reason, anticorrosion performance also became x. On the other hand, no. In No. 2, since the anticorrosion material was applied in a state where the terminals and the like were previously heated and cooled immediately after the anticorrosion material was applied, the outflow of the anticorrosion material could be suppressed. For this reason, while being able to manufacture in a short time, resin permeability and anticorrosion performance became (circle).
（Ｎｏ．３〜１６）
次に、より望ましい条件を評価するため、前述したＮｏ．２に対して、第１温度制御部の設定温度Ｔ１と、第２温度制御部の設定温度Ｔ２を変更して樹脂浸透性および防食性能を評価した。なお、防食材としては、２０℃における粘度が３１００ｍＰａ・ｓであり、７０℃おける粘度が２３０ｍＰａ・ｓの樹脂を選択した。結果を表２に示す。
(No. 3-16)
Next, in order to evaluate more desirable conditions, the above-described No. 1 is used. 2, the set temperature T1 of the first temperature control unit and the set temperature T2 of the second temperature control unit were changed to evaluate resin permeability and anticorrosion performance. As the anticorrosive material, a resin having a viscosity of 3100 mPa · s at 20 ° C. and a viscosity of 230 mPa · s at 70 ° C. was selected. The results are shown in Table 2.
Ｎｏ．３〜Ｎｏ．１６の全てにおいて、防食材塗布から防食材硬化までの時間は、Ｎｏ．２と同様に、Ｎｏ．１と比較して極めて短時間に製造することができた。特に、Ｎｏ．３〜Ｎｏ．９は、設定温度が適切であり、樹脂浸透性および防食性能が〇となった。一方、Ｎｏ．１０、１１は、温度差ΔＴが４０℃と小さ目であったため、冷却勾配がやや小さく、十分に樹脂を浸透させた後直ちに樹脂の粘度を高める効果がやや小さく、樹脂浸透性および防食性能が△評価であったが、サーマルショック試験前においては、防食性能も合格であった。 No. 3-No. In all of No. 16, the time from applying the anticorrosive material to curing the anticorrosive material is No. Similar to No. 2, Compared to 1, it could be produced in a very short time. In particular, no. 3-No. For No. 9, the set temperature was appropriate, and the resin permeability and anticorrosion performance were ◯. On the other hand, no. 10 and 11, since the temperature difference ΔT was as small as 40 ° C., the cooling gradient was slightly small, the effect of increasing the viscosity of the resin immediately after sufficiently infiltrating the resin was slightly small, and the resin permeability and anticorrosion performance were Δ Although it was evaluation, before the thermal shock test, the anticorrosion performance was also passed.
一方、Ｎｏ．１２は、Ｔ１が１１０度と高すぎたため、樹脂の劣化による割れが生じ、これにより、樹脂浸透性および防食性能が×評価となった。また、Ｎｏ．１３〜１６は、温度差ΔＴが３０℃と小さすぎたため、冷却勾配が小さく、十分に樹脂を浸透させた後直ちに樹脂の粘度を高める効果を得ることができなかった。特に、Ｎｏ．１５、１６は、Ｔ１が低すぎるため、Ｔ１において粘度が３００ｍＰａ・ｓを超えてしまい、十分に樹脂を浸透させることができなかった。このため、Ｎｏ．１３〜１６は、樹脂浸透性および防食性能が×評価であった。 On the other hand, no. In No. 12, since T1 was too high at 110 degrees, cracking due to deterioration of the resin occurred, and thereby the resin permeability and anticorrosion performance were evaluated as x. No. In Nos. 13 to 16, since the temperature difference ΔT was too small at 30 ° C., the cooling gradient was small, and the effect of increasing the viscosity of the resin could not be obtained immediately after sufficiently impregnating the resin. In particular, no. 15 and 16 were too low in T1, so the viscosity exceeded 300 mPa · s at T1 and the resin could not be sufficiently infiltrated. For this reason, no. Nos. 13 to 16 were evaluated as x for resin permeability and anticorrosion performance.
（Ｎｏ．１７〜３０）
次に、防食材として、２０℃における粘度が４８０ｍＰａ・ｓであり、７０℃おける粘度が５０ｍＰａ・ｓの樹脂を選択して同様の評価を行った。結果を表３に示す。
(No. 17-30)
Next, the same evaluation was performed by selecting a resin having a viscosity at 20 ° C. of 480 mPa · s and a viscosity at 70 ° C. of 50 mPa · s as an anticorrosive material. The results are shown in Table 3.
前述と同様に、Ｎｏ．１７〜Ｎｏ．３０の全てにおいて、防食材塗布から防食材硬化までの時間は、Ｎｏ．１と比較して極めて短時間に製造することができた。特に、Ｎｏ．１７〜Ｎｏ．２１は、設定温度が適切であり、樹脂浸透性および防食性能が〇となった。一方、Ｎｏ．２２〜２５は、温度差ΔＴが４０〜５０℃と小さ目であったため、冷却勾配がやや小さく、十分に樹脂を浸透させた後直ちに樹脂の粘度を高める効果がやや小さく、樹脂浸透性および防食性能が△評価であったが、サーマルショック試験前においては、防食性能も合格であった。 Similar to the above, no. 17-No. In all of No. 30, the time from applying the anticorrosive material to curing the anticorrosive material is No. Compared to 1, it could be produced in a very short time. In particular, no. 17-No. In No. 21, the set temperature was appropriate, and the resin permeability and the anticorrosion performance were ◯. On the other hand, no. Nos. 22 to 25 had a small temperature difference ΔT of 40 to 50 ° C., so the cooling gradient was slightly small, and the effect of increasing the viscosity of the resin immediately after sufficiently infiltrating the resin was slightly small, and the resin permeability and anticorrosion performance However, the anticorrosion performance was also acceptable before the thermal shock test.
一方、Ｎｏ．２６は、Ｔ１が高すぎたため、樹脂の劣化による割れが生じ、これにより、樹脂浸透性および防食性能が×評価となった。また、Ｎｏ．２７〜３０は、温度差ΔＴが３０℃と小さすぎたため、冷却勾配が小さく、十分に樹脂を浸透させた後直ちに樹脂の粘度を高める効果を得ることができなかった。特に、Ｎｏ．２７、２８は、Ｔ２が高すぎて、Ｔ２でも樹脂の粘度が３００ｍＰａ・ｓ以下であるため、樹脂の流出を抑制することができなかった。このため、Ｎｏ．１７〜３０は、樹脂浸透性および防食性能が×評価であった。 On the other hand, no. In T26, since T1 was too high, cracking due to deterioration of the resin occurred, and thereby the resin permeability and anticorrosion performance were evaluated as x. No. In 27 to 30, since the temperature difference ΔT was too small as 30 ° C., the cooling gradient was small, and the effect of increasing the viscosity of the resin immediately after sufficiently impregnating the resin could not be obtained. In particular, no. In Nos. 27 and 28, since T2 was too high and the viscosity of the resin was 300 mPa · s or less even at T2, the outflow of the resin could not be suppressed. For this reason, no. 17 to 30 were evaluated as x for resin permeability and anticorrosion performance.
このように、Ｔ１とＴ２の温度差ΔＴは、４０〜８０℃であることが望ましく、特に望ましくは、６０〜８０℃である。また、この際に適用可能な樹脂として、望ましくは、２０℃における粘度が４８０〜３１００ｍＰａ・ｓであって、７０℃における粘度が５０〜２３０ｍＰａ・ｓを満たす樹脂を適用することができる。なお、防食材の粘度は、オリゴマー成分とモノマー成分の比率によって調整することができる。 Thus, the temperature difference ΔT between T1 and T2 is preferably 40 to 80 ° C., and particularly preferably 60 to 80 ° C. Further, as a resin applicable at this time, a resin having a viscosity of 480 to 3100 mPa · s at 20 ° C. and satisfying a viscosity of 50 to 230 mPa · s at 70 ° C. can be applied. The viscosity of the anticorrosive material can be adjusted by the ratio of the oligomer component to the monomer component.
以上、添付図を参照しながら、本発明の実施の形態を説明したが、本発明の技術的範囲は、前述した実施の形態に左右されない。当業者であれば、特許請求の範囲に記載された技術的思想の範疇内において各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。 As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.
１………端子
３………端子本体
４………トランジション部
５………圧着部
７………導線圧着部
８………バレル間部
９………被覆圧着部
１０………端子付き電線
１１………被覆導線
１３………導線
１５………被覆部
１７………防食材
１９ａ………第１温度制御部
１９ｂ………第２温度制御部
２１………水槽
２２………レギュレータ
１００………端子付き電線
１０１………端子
１０３………端子本体
１０５………圧着部
１０７………導線圧着部
１０８………バレル間部
１０９………被覆圧着部
１１１………被覆導線
１１３………導線
１１５………被覆部
１１７………防食材
1 ... Terminal 3 ... Terminal body 4 ... Transition part 5 ... Crimp part 7 ... Conductor crimp part 8 ... Barrel section 9 ... Cover Crimp part 10 ... With terminal Electric wire 11 ......... Coating conductor 13 ......... Conducting wire 15 ......... Coating part 17 ......... Anti-corrosion material 19a ......... First temperature control part 19b ......... Second temperature control part 21 ......... Water tank 22 ... ... Regulator 100 ... ... Terminal-attached electric wire 101 ... ... Terminal 103 ... ... Terminal body 105 ... ... Crimp part 107 ... ... Conductor crimp part 108 ... ... Barrel part 109 ... ... Cover crimp part 111 ... ... covered lead wire 113 ......... lead wire 115 ......... covered portion 117 ......... corrosion preventive material
Claims (6)
前記被覆導線は、被覆部と、前記被覆部の先端から露出する複数の素線からなる導線とを具備し、
前記端子の圧着部に前記被覆導線を圧着する工程と、
前記被覆導線が圧着された前記端子を、所定の温度に設定された第１温度制御部に配置する工程と、
前記被覆部から前記導線が露出する部位の少なくとも一部に防食材を塗布する工程と、
前記防食材の塗布後直ちに、前記被覆導線が圧着された前記端子を、前記第１温度制御部よりも低い温度に設定された第２温度制御部に配置する工程と、
前記防食材を硬化させる工程と、
を具備することを特徴とする端子付き電線の製造方法。 A method of manufacturing an electric wire with a terminal to which a coated conductor and a terminal are connected,
The coated conductive wire includes a coated portion and a conductive wire composed of a plurality of strands exposed from the tip of the coated portion,
Crimping the coated conductor to the crimp portion of the terminal;
Placing the terminal, to which the coated conductor is crimped, in a first temperature control unit set to a predetermined temperature;
Applying an anticorrosive material to at least a part of the portion where the conducting wire is exposed from the covering portion;
Immediately after applying the anticorrosive material, placing the terminal to which the coated conductor is crimped in a second temperature control unit set at a temperature lower than the first temperature control unit; and
Curing the anticorrosive,
The manufacturing method of the electric wire with a terminal characterized by comprising.
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