JP2024080751A - Manufacturing method for electric wire with terminal - Google Patents

Manufacturing method for electric wire with terminal Download PDF

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JP2024080751A
JP2024080751A JP2022193939A JP2022193939A JP2024080751A JP 2024080751 A JP2024080751 A JP 2024080751A JP 2022193939 A JP2022193939 A JP 2022193939A JP 2022193939 A JP2022193939 A JP 2022193939A JP 2024080751 A JP2024080751 A JP 2024080751A
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electric wire
application
anticorrosive agent
terminal
coating
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匡司 岩田
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Yazaki Corp
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Yazaki Corp
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Abstract

【課題】端子付き電線において電線と端子の接合部分に防食剤を適切に塗布し、適正な防食機能を確保することができる端子付き電線製造方法を提供することを目的とする。【解決手段】端子付き電線製造方法は、圧着端子１を取り付けた電線Ｗにおいて電線Ｗの導体部Ｗ１が露出する部分を含む圧着端子１の取付部分に対し液状の防食剤１１を塗布する塗布工程と、取付部分に塗布された防食剤１１を硬化させる硬化工程と、を含み、塗布工程は、防食剤１１が塗布される塗布領域Ｒのうち領域境界に隣接して位置する周辺部Ｒ１に対し防食剤１１の塗布を行い（ＳＴ１０）、周辺部Ｒ１の塗布の後に塗布領域Ｒにおける周辺部Ｒ１の内側にある中央部Ｒ２に対し防食剤１１の塗布を行う（ＳＴ１４）。【選択図】図６[Problem] To provide a method for manufacturing an electric wire with terminal, capable of properly applying an anticorrosive agent to a joint between an electric wire and a terminal in an electric wire with terminal, and ensuring proper anticorrosive function. [Solution] The method for manufacturing an electric wire with terminal includes a coating step of coating a liquid anticorrosive agent 11 to an attachment portion of an electric wire W to which a crimp terminal 1 is attached, the attachment portion including a portion where a conductor portion W1 of the electric wire W is exposed, and a hardening step of hardening the anticorrosive agent 11 applied to the attachment portion, in which the coating step includes coating the anticorrosive agent 11 to a peripheral portion R1 located adjacent to the boundary of an application region R to which the anticorrosive agent 11 is applied (ST10), and after coating the peripheral portion R1, coating the anticorrosive agent 11 to a central portion R2 inside the peripheral portion R1 of the application region R (ST14). [Selected Figure] Figure 6

Description

本発明は、端子付き電線の製造方法に関する。 The present invention relates to a method for manufacturing an electric wire with a terminal.

従来、端子付き電線製造方法として、例えば、特許文献１、２に記載されるように、端子付き電線において電線と端子の接合部分に防食剤を塗布し硬化させ、電線と端子の接合部分を外部に対し封止して腐食を防止しようとするものが知られている。 Conventionally, as described in Patent Documents 1 and 2, a method for manufacturing an electric wire with terminal is known in which an anticorrosive agent is applied to the joint between the electric wire and the terminal in the electric wire with terminal, and the anticorrosive agent is hardened to seal the joint between the electric wire and the terminal from the outside and prevent corrosion.

特開２０１４－１３０７０３号公報JP 2014-130703 A 特開２０１９－０４６７３６号公報JP 2019-046736 A

このような製造方法において、電線と端子の接合部分の防食剤の塗布すべき領域に防食剤が塗布できていないと、適正な防食性能を発揮することができない。防食剤は、硬化する前は液体であり、接合部分に塗布された時に流動性を有する。このため、このような性質を考慮して電線と端子の接合部分に防食剤を適切に塗布しなければ、適正な防食機能を確保することが難しい。 In this type of manufacturing method, if the anticorrosive agent is not applied to the area where it should be applied at the joint between the electric wire and the terminal, the proper anticorrosive performance cannot be achieved. The anticorrosive agent is liquid before it hardens, and becomes fluid when applied to the joint. For this reason, unless the anticorrosive agent is applied appropriately to the joint between the electric wire and the terminal, taking these properties into consideration, it is difficult to ensure proper anticorrosive function.

そこで、本発明は、電線と端子の接合部分に防食剤を適切に塗布し、適正な防食機能を確保することができる端子付き電線製造方法を提供することを目的とする。 The present invention aims to provide a method for manufacturing an electric wire with a terminal that can properly apply an anticorrosive agent to the joint between the electric wire and the terminal, ensuring proper anticorrosion performance.

すなわち、本発明に係る端子付き電線製造方法は、圧着端子を取り付けた電線において電線の導体部が露出する部分を含む圧着端子の取付部分に対し液状の防食剤を塗布する塗布工程と、取付部分に塗布された防食剤を硬化させる硬化工程と、を含み、塗布工程は、防食剤の塗布領域のうち領域境界に隣接して位置する周辺部に対し防食剤の塗布を行う第一塗布工程と、周辺部の塗布の後に塗布領域における周辺部の内側にある中央部に対し防食剤の塗布を行う第二塗布工程と、を含むように構成されている。 In other words, the method for manufacturing an electric wire with a terminal according to the present invention includes a coating step of coating a liquid anticorrosive agent to the mounting portion of the crimp terminal, which includes the portion where the conductor portion of the electric wire is exposed in the electric wire to which the crimp terminal is attached, and a hardening step of hardening the anticorrosive agent applied to the mounting portion. The coating step is configured to include a first coating step of coating the anticorrosive agent to a peripheral portion of the anticorrosive agent application area that is located adjacent to the boundary of the area, and a second coating step of coating the anticorrosive agent to a central portion inside the peripheral portion of the application area after coating the peripheral portion.

本発明に係る端子付き電線製造方法は、端子付き電線において端子の取付部分に防食剤を適切に塗布し、適正な防食機能を確保することができる。 The method for manufacturing an electric wire with terminal according to the present invention can properly apply an anticorrosive agent to the terminal attachment portion of an electric wire with terminal, ensuring proper anticorrosion function.

図１は、実施形態に係る端子付き電線製造方法により製造される電線の概略構成を示す斜視図である。FIG. 1 is a perspective view showing a schematic configuration of an electric wire manufactured by a method for manufacturing an electric wire with a terminal according to an embodiment. 図２は、実施形態に係る端子付き電線製造方法に用いられる製造装置のブロック図である。FIG. 2 is a block diagram of a manufacturing apparatus used in the method for manufacturing an electric wire with a terminal according to the embodiment. 図３は、実施形態に係る端子付き電線製造方法における防食剤の塗布位置を示す図である。FIG. 3 is a diagram showing positions at which an anticorrosive agent is applied in the method for producing an electric wire with a terminal according to the embodiment. 図４は、実施形態に係る端子付き電線製造方法の塗布工程の説明図である。FIG. 4 is an explanatory diagram of a coating step in the method for producing an electric wire with a terminal according to the embodiment. 図５は、実施形態に係る端子付き電線製造方法の硬化工程の説明図である。FIG. 5 is an explanatory diagram of a hardening step in the method for manufacturing an electric wire with a terminal according to the embodiment. 図６は、実施形態に係る端子付き電線製造方法を示すフローチャートである。FIG. 6 is a flowchart showing a method for manufacturing an electric wire with a terminal according to the embodiment. 図７は、実施形態に係る端子付き電線製造方法の塗布工程の説明図である。FIG. 7 is an explanatory diagram of a coating step in the method for manufacturing an electric wire with a terminal according to the embodiment. 図８は、実施形態に係る端子付き電線製造方法の硬化工程の説明図である。FIG. 8 is an explanatory diagram of the hardening step of the method for manufacturing an electric wire with a terminal according to the embodiment.

以下に、本発明に係る実施形態を図面に基づいて詳細に説明する。なお、この実施形態によりこの発明が限定されるものではない。また、下記実施形態における構成要素には、当業者が置換可能かつ容易なもの、あるいは実質的に同一のものが含まれる。 Below, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to this embodiment. Furthermore, the components in the following embodiment include those that are easily replaceable by a person skilled in the art, or those that are substantially the same.

［実施形態］
本実施形態に係る端子付き電線製造方法は、図１に示す端子付き電線１００を製造する方法である。端子付き電線製造方法の説明に先立ち、図１に示す端子付き電線１００の基本的な構成について説明する。その後、端子付き電線１００の製造方法について詳細に説明する。 [Embodiment]
The method for manufacturing an electric wire with terminal according to the present embodiment is a method for manufacturing an electric wire with terminal 100 shown in Fig. 1. Prior to describing the method for manufacturing an electric wire with terminal, a basic configuration of the electric wire with terminal 100 shown in Fig. 1 will be described. Then, the method for manufacturing the electric wire with terminal 100 will be described in detail.

図１に示すように、端子付き電線１００は、電線Ｗの端部に端子金具を取り付けた端子付きの電線であり、例えば、車両に使用されるワイヤハーネス等に適用されるものである。ここで、ワイヤハーネスは、例えば、車両に搭載される各装置間の接続のために、電源供給や信号通信に用いられる複数の電線Ｗを束にして集合部品とし、コネクタ等で複数の電線Ｗを一度に各装置に接続するようにしたものである。本実施形態の端子付き電線１００は、電線Ｗ、圧着端子１及び封止部１０を備えている。 As shown in FIG. 1, the electric wire with terminal 100 is an electric wire with a terminal in which a terminal fitting is attached to the end of the electric wire W, and is applied to, for example, a wire harness used in a vehicle. Here, the wire harness is, for example, a bundle of multiple electric wires W used for power supply and signal communication to connect various devices mounted on a vehicle, and is configured to connect the multiple electric wires W to each device at once using a connector or the like. The electric wire with terminal 100 of this embodiment includes an electric wire W, a crimp terminal 1, and a sealing portion 10.

なお、以下の説明では、互いに交差する第１方向、第２方向、及び、第３方向のうち、第１方向を「軸方向Ｘ」といい、第２方向を「幅方向Ｙ」といい、第３方向を「高さ方向Ｚ」という。ここでは、軸方向Ｘと幅方向Ｙと高さ方向Ｚとは、相互に直交する。軸方向Ｘは、圧着端子１が取り付けられる電線Ｗの延在方向に相当する。幅方向Ｙと高さ方向Ｚとは、軸方向Ｘと交差する交差方向に相当する。また、以下の説明で用いる各方向は、特に断りのない限り、各部が相互に組み付けられた状態での方向を表すものとする。なお、ここでいう直交は、ほぼ直交を含む。 In the following description, of the first, second, and third directions that intersect with one another, the first direction is referred to as the "axial direction X", the second direction is referred to as the "width direction Y", and the third direction is referred to as the "height direction Z". Here, the axial direction X, width direction Y, and height direction Z are mutually perpendicular. The axial direction X corresponds to the extension direction of the electric wire W to which the crimp terminal 1 is attached. The width direction Y and height direction Z correspond to intersecting directions that intersect with the axial direction X. Furthermore, unless otherwise specified, each direction used in the following description represents a direction when each part is assembled with respect to each other. Note that orthogonal here includes nearly perpendicular.

電線Ｗは、例えば、導電性を有する線状の導体部Ｗ１と、当該導体部Ｗ１の外側を覆う絶縁性の絶縁被覆部Ｗ２とを含んで構成される。すなわち、電線Ｗは、絶縁被覆部Ｗ２で導体部Ｗ１を被覆した絶縁電線である。本実施形態の導体部Ｗ１は、導電性の金属、例えば、銅、銅合金、アルミニウム、アルミニウム合金等の素線を複数束ねた芯線である。この導体部Ｗ１は、複数の素線を撚り合わせた撚り芯線であってもよい。絶縁被覆部Ｗ２は、導体部Ｗ１の外周側を被覆する電線被覆である。絶縁被覆部Ｗ２は、例えば、絶縁性の樹脂材料（ＰＰやＰＶＣ、架橋ＰＥ等。耐摩耗性や耐薬品性、耐熱性等に配慮して適宜選定される。）等を押出成形することによって形成される。電線Ｗは、少なくとも導体部Ｗ１の一方の端末において、絶縁被覆部Ｗ２が剥ぎ取られており、当該導体部Ｗ１の一方の端末が絶縁被覆部Ｗ２の端末から露出しており、当該露出している導体部Ｗ１の端末に圧着端子１が圧着される。ここでは、電線Ｗは、線状に延びる延在方向に対してほぼ同じ径で延びるように形成され、導体部Ｗ１の断面形状（延在方向と交差する方向の断面形状）が略円形状、絶縁被覆部Ｗ２の断面形状が略円環形状となっており、全体として略円形状の断面形状となっている。 The electric wire W is, for example, composed of a conductive linear conductor portion W1 and an insulating insulating coating portion W2 that covers the outside of the conductor portion W1. That is, the electric wire W is an insulated electric wire in which the conductor portion W1 is coated with the insulating coating portion W2. The conductor portion W1 in this embodiment is a core wire in which multiple wires of a conductive metal, for example, copper, copper alloy, aluminum, aluminum alloy, etc., are bundled together. This conductor portion W1 may be a twisted core wire in which multiple wires are twisted together. The insulating coating portion W2 is an electric wire coating that coats the outer periphery of the conductor portion W1. The insulating coating portion W2 is formed, for example, by extrusion molding an insulating resin material (PP, PVC, cross-linked PE, etc., appropriately selected in consideration of abrasion resistance, chemical resistance, heat resistance, etc.). The electric wire W has the insulating coating W2 stripped off at least from one end of the conductor W1, one end of the conductor W1 is exposed from the end of the insulating coating W2, and a crimp terminal 1 is crimped to the exposed end of the conductor W1. Here, the electric wire W is formed so that it extends with approximately the same diameter in the linear extension direction, the cross-sectional shape of the conductor W1 (cross-sectional shape in a direction intersecting the extension direction) is approximately circular, and the cross-sectional shape of the insulating coating W2 is approximately annular, resulting in an approximately circular cross-sectional shape overall.

圧着端子１は、電線Ｗを他部品に接続するための部材であり、電気接続部２、連結部３及び電線接合部４を備える。電気接続部２、連結部３及び電線接合部４とは、全体が一体で導電性の金属、例えば、銅、銅合金、アルミニウム、アルミニウム合金等によって構成され、端子金具５を構成する。圧着端子１は、例えば、電気接続部２、連結部３、電線接合部４等の各部に対応した形状に打ち抜かれた一枚の板金をプレス及び折り曲げ成形することにより各部が立体的に一体で形成される。圧着端子１は、軸方向Ｘに沿って一方側から他方側に向かって、電気接続部２、連結部３、電線接合部４の順で並んで相互に連結される。 The crimp terminal 1 is a member for connecting an electric wire W to another component, and includes an electrical connection portion 2, a connecting portion 3, and an electric wire joint portion 4. The electrical connection portion 2, the connecting portion 3, and the electric wire joint portion 4 are integrally formed as a whole from a conductive metal, such as copper, a copper alloy, aluminum, or an aluminum alloy, and constitute a terminal fitting 5. The crimp terminal 1 is formed by pressing and bending a sheet of metal that has been punched into a shape corresponding to each of the electrical connection portion 2, the connecting portion 3, the electric wire joint portion 4, etc., so that each portion is integrally formed three-dimensionally. The crimp terminal 1 is connected to each other in the order of the electrical connection portion 2, the connecting portion 3, and the electric wire joint portion 4, lined up from one side to the other along the axial direction X.

電気接続部２は、導電性部材と電気的に接続される部分である。本実施形態の導電性部材は、例えば、相手側端子（不図示）である。すなわちここでは、本実施形態の電気接続部２は、相手側端子に対して電気的に接続される端子接続部として構成される。電気接続部２は、雄型の端子形状であってもよいし、雌型の端子形状であってもよい。本実施形態の電気接続部２は、雌型の端子形状として図示しており、雄型の端子形状の相手側端子と電気的に接続される。なお、導電性部材は、相手側端子でなくてもよく、例えば、アース部材等の種々の導電性の部材であってもよい。電気接続部２は、相手側端子に対して電気的に接続される端子接続部を構成しなくてもよく、例えば、アース部材等に締結されるいわゆる丸形端子（ＬＡ端子）形状であってもよい。 The electrical connection part 2 is a part that is electrically connected to the conductive member. The conductive member in this embodiment is, for example, a mating terminal (not shown). That is, here, the electrical connection part 2 in this embodiment is configured as a terminal connection part that is electrically connected to the mating terminal. The electrical connection part 2 may be in a male terminal shape or a female terminal shape. The electrical connection part 2 in this embodiment is illustrated as a female terminal shape and is electrically connected to a mating terminal that is in a male terminal shape. Note that the conductive member does not have to be a mating terminal, and may be, for example, various conductive members such as an earth member. The electrical connection part 2 does not have to constitute a terminal connection part that is electrically connected to the mating terminal, and may be, for example, a so-called round terminal (LA terminal) shape that is fastened to an earth member or the like.

連結部３は、電気接続部２と電線接合部４との間に介在し、当該電気接続部２と当該電線接合部４を連結する部分である。圧着端子１は、電気接続部２と電線接合部４とが連結部３を介して電気的に接続され、当該電線接合部４を介して電気接続部２と電線Ｗの導体部Ｗ１とが電気的に接続され導通される。 The connecting portion 3 is interposed between the electrical connection portion 2 and the electric wire joint portion 4, and is a portion that connects the electrical connection portion 2 and the electric wire joint portion 4. In the crimp terminal 1, the electrical connection portion 2 and the electric wire joint portion 4 are electrically connected via the connecting portion 3, and the electrical connection portion 2 and the conductor portion W1 of the electric wire W are electrically connected and conductive via the electric wire joint portion 4.

電線接合部４は、圧着端子１と電線Ｗを接続する部分である。電線接合部４は、電線Ｗの端末で加締められ圧着される。電線接合部４は、基部４１、及び、二組の一対のバレル片部４２、４３、４４、４５を含んで構成される。基部４１は、軸方向Ｘに沿って延在し、Ｕ字状に形成された電線接合部４の底壁となる部分である。基部４１には、圧着加工の際に電線Ｗの端部が載置される。基部４１は、軸方向Ｘの一方側に連結部３を介して電気接続部２が連結される。一対のバレル片部４２、４３は、基部４１から幅方向Ｙの両側にそれぞれ帯状に延びて形成され、基部４１との間に電線Ｗの導体部Ｗ１を包んで加締められ圧着される部分である。一対のバレル片部４２、４３は、いわゆるＢクリンプと称される加締め圧着を行うものとして図示している。すなわち、一対のバレル片部４２、４３は、電線Ｗの全周を包んで圧着された状態で、それぞれ基部４１側に向けて折り曲げられた状態とされる。そして、この状態で、一対のバレル片部４２、４３の先端がそれぞれ導体部Ｗ１に接触して押し付けられるように加締められ圧着される。なお、一対のバレル片部４２、４３は、これに限られず、例えばオーバーラップクリンプであってもよい。この場合、一対のバレル片部４２、４３が電線Ｗに対して巻き付けられて加締められ圧着された状態で、先端側が互いに重なり合う（オーバーラップする）ように構成されてもよい。一対のバレル片部４４、４５は、基部４１から幅方向Ｙの両側にそれぞれ帯状に延びて形成され、基部４１との間に電線Ｗの絶縁被覆部Ｗ２を包んで加締められ圧着される部分である。一対のバレル片部４４、４５は、いわゆるオーバーラップクリンプを用いるものとして図示している。すなわち、一対のバレル片部４４、４５は、電線Ｗに対して巻き付けられて加締められ圧着された状態で、先端側が互いに重なり合う（オーバーラップする）ように構成される。なお、一対のバレル片部４４、４５は、これに限られず、例えばラウンドクリンプであってもよい。この場合、一対のバレル片部４４、４５が絶縁被覆部Ｗ２を包んで圧着された状態で、一対のバレル片部４４、４５の先端が互いに対向して当接するような位置関係で加締められ圧着されるように構成されてもよい。電線接合部４は、基部４１と二組の一対のバレル片部４２、４３、４４、４５とによって電線Ｗに対して加締められ圧着される。 The electric wire joint 4 is a part that connects the crimp terminal 1 and the electric wire W. The electric wire joint 4 is crimped at the end of the electric wire W. The electric wire joint 4 is composed of a base 41 and two pairs of barrel pieces 42, 43, 44, 45. The base 41 extends along the axial direction X and is a part that becomes the bottom wall of the electric wire joint 4 formed in a U-shape. The end of the electric wire W is placed on the base 41 during crimping. The electric connection part 2 is connected to one side of the base 41 in the axial direction X via the connecting part 3. The pair of barrel pieces 42, 43 are formed to extend in a band shape from the base 41 on both sides in the width direction Y, and are parts that are crimped and crimped by wrapping the conductor part W1 of the electric wire W between the base 41 and the pair of barrel pieces 42, 43. The pair of barrel pieces 42, 43 are illustrated as performing a crimping crimping process called a B crimp. That is, the pair of barrel pieces 42, 43 are bent toward the base 41 while being crimped to wrap the entire circumference of the electric wire W. In this state, the tips of the pair of barrel pieces 42, 43 are crimped and pressed against the conductor W1. The pair of barrel pieces 42, 43 is not limited to this, and may be, for example, an overlap crimp. In this case, the pair of barrel pieces 42, 43 may be configured so that the tips overlap each other when they are wrapped around the electric wire W, crimped, and crimped. The pair of barrel pieces 44, 45 are formed to extend in a band shape from the base 41 to both sides in the width direction Y, and are portions that are crimped and crimped to wrap the insulating coating portion W2 of the electric wire W between the base 41 and the pair of barrel pieces 44, 45. The pair of barrel pieces 44, 45 are illustrated as being crimped to use a so-called overlap crimp. That is, the pair of barrel pieces 44, 45 are configured so that the tip sides overlap each other when wrapped around the electric wire W and crimped. The pair of barrel pieces 44, 45 is not limited to this, and may be round crimped, for example. In this case, the pair of barrel pieces 44, 45 may be configured so that the tip ends of the pair of barrel pieces 44, 45 face each other and abut against each other when wrapped around the insulating coating W2 and crimped. The electric wire joint 4 is crimped and crimped to the electric wire W by the base 41 and two pairs of barrel pieces 42, 43, 44, 45.

電線接合部４は、導体圧着部４６、導体露出部４７、被覆圧着部４８、及び、端部露出部４９を有する。導体圧着部４６は、基部４１の一部、及び、一対のバレル片部４２、４３によって構成され、電線Ｗの導体部Ｗ１を包んで加締めて圧着する部分である。導体露出部４７は、導体圧着部４６と被覆圧着部４８の間に形成され、基部４１の一部によって構成される。導体露出部４７では、導体部Ｗ１が露出した状態となっている。被覆圧着部４８は、基部４１の一部、及び、一対のバレル片部４４、４５によって構成され、電線Ｗの絶縁被覆部Ｗ２を包んで加締めて圧着する部分である。端部露出部４９は、導体部Ｗ１が一対のバレル片部４４、４５から延びて露出している部分である。電線接合部４は、軸方向Ｘに沿って電気接続部２側から反対側に向かって、端部露出部４９、導体圧着部４６、導体露出部４７、被覆圧着部４８の順で並んで設けられている。 The wire joint 4 has a conductor crimping portion 46, a conductor exposed portion 47, a coating crimping portion 48, and an end exposed portion 49. The conductor crimping portion 46 is composed of a part of the base 41 and a pair of barrel pieces 42, 43, and is a portion that wraps around the conductor portion W1 of the electric wire W and crimps it by crimping it. The conductor exposed portion 47 is formed between the conductor crimping portion 46 and the coating crimping portion 48, and is composed of a part of the base 41. In the conductor exposed portion 47, the conductor portion W1 is exposed. The coating crimping portion 48 is composed of a part of the base 41 and a pair of barrel pieces 44, 45, and is a portion that wraps around the insulating coating portion W2 of the electric wire W and crimps it by crimping it. The end exposed portion 49 is a portion where the conductor portion W1 extends from the pair of barrel pieces 44, 45 and is exposed. The electric wire joint portion 4 is arranged in the axial direction X from the electrical connection portion 2 side to the opposite side in the following order: end exposed portion 49, conductor crimping portion 46, conductor exposed portion 47, and coating crimping portion 48.

封止部１０は、電線Ｗと圧着端子１の接合を行う電線接合部４を外部と封止する部分であり、防食剤を塗布し硬化させて形成されている。防食剤は、例えば光硬化性の樹脂が用いられる。具体的には、防食剤は、紫外線を照射することで硬化するＵＶ（Ｕｌｔｒａｖｉｏｌｅｔ、紫外線）硬化型樹脂が用いられる。ＵＶ硬化型樹脂としては、例えば、ウレタンアクリレート系の樹脂を用いることができるが、これに限らない。封止部１０は、電線接合部４に設定される塗布領域に対し液状の防食剤を塗布し、塗布した防食剤に対し光を照射して硬化させることにより形成される。 The sealing portion 10 is a portion that seals the electric wire joint portion 4, which joins the electric wire W and the crimp terminal 1, from the outside, and is formed by applying and curing an anticorrosive agent. For example, a photocurable resin is used as the anticorrosive agent. Specifically, a UV (ultraviolet) curable resin that is cured by irradiating it with ultraviolet light is used as the anticorrosive agent. For example, a urethane acrylate resin can be used as the UV curable resin, but is not limited to this. The sealing portion 10 is formed by applying a liquid anticorrosive agent to an application area set in the electric wire joint portion 4, and curing the applied anticorrosive agent by irradiating it with light.

図１のように設置される端子付き電線１００において、高さ方向Ｚから防食剤を塗布して封止部１０を形成する場合、電線接合部４における導体圧着部４６、導体露出部４７、被覆圧着部４８及び端部露出部４９のうち、導体圧着部４６の高さが一番低くなる。つまり、端子付き電線１００の設置面から高さは、導体圧着部４６が一番低くなる。導体圧着部４６では、絶縁被覆部Ｗ２が剥がされ、一対のバレル片部４２、４３により圧着されているからである。このため、端部露出部４９は、導体圧着部４６より高い位置となる。また、被覆圧着部４８は、導体圧着部４６より高い位置となる。そして、導体露出部４７は、被覆圧着部４８側から導体圧着部４６側に向けて低くなるように傾斜している。 When the sealing portion 10 is formed by applying an anticorrosive agent from the height direction Z in the electric wire with terminal 100 installed as shown in FIG. 1, the height of the conductor crimping portion 46, the conductor exposed portion 47, the coating crimping portion 48, and the end exposed portion 49 in the electric wire joint portion 4 is the lowest. In other words, the height of the conductor crimping portion 46 from the installation surface of the electric wire with terminal 100 is the lowest because the insulating coating portion W2 is peeled off in the conductor crimping portion 46 and is crimped by a pair of barrel pieces 42, 43. Therefore, the end exposed portion 49 is located higher than the conductor crimping portion 46. Also, the coating crimping portion 48 is located higher than the conductor crimping portion 46. And the conductor exposed portion 47 is inclined so as to become lower from the coating crimping portion 48 side toward the conductor crimping portion 46 side.

次に、本実施形態に係る端子付き電線製造方法について説明する。 Next, we will explain the method for manufacturing an electric wire with terminal according to this embodiment.

図２は実施形態に係る端子付き電線製造方法に用いられる製造装置のブロック図であり、図３は実施形態に係る端子付き電線製造方法における防食剤の塗布位置を示す図である。図４は実施形態に係る端子付き電線製造方法の塗布工程の説明図であり、図５は実施形態に係る端子付き電線製造方法の硬化工程の説明図である。図６は実施形態に係る端子付き電線製造方法を示すフローチャートであり、図７は実施形態に係る端子付き電線製造方法の塗布工程の説明図である。図８は実施形態に係る端子付き電線製造方法の硬化工程の説明図である。 Figure 2 is a block diagram of a manufacturing device used in the method for manufacturing an electric wire with terminal according to the embodiment, and Figure 3 is a diagram showing the application position of the anticorrosive agent in the method for manufacturing an electric wire with terminal according to the embodiment. Figure 4 is an explanatory diagram of the application process in the method for manufacturing an electric wire with terminal according to the embodiment, and Figure 5 is an explanatory diagram of the hardening process in the method for manufacturing an electric wire with terminal according to the embodiment. Figure 6 is a flowchart showing the method for manufacturing an electric wire with terminal according to the embodiment, and Figure 7 is an explanatory diagram of the application process in the method for manufacturing an electric wire with terminal according to the embodiment. Figure 8 is an explanatory diagram of the hardening process in the method for manufacturing an electric wire with terminal according to the embodiment.

本実施形態に係る端子付き電線製造方法は、製造装置により行われてもよいし、作業員の手作業により行われてもよい。ここでは、製造装置により電線を製造する場合について説明する。図２に示すように、製造装置７は、端子付き電線１００を製造する装置であって、圧着端子１を取り付けた電線Ｗに対し、防食剤を塗布し、塗布した防食剤を硬化させて、端子付き電線１００を製造する。 The method for manufacturing an electric wire with terminal according to this embodiment may be performed by a manufacturing device or may be performed manually by an operator. Here, a case where an electric wire is manufactured by a manufacturing device will be described. As shown in FIG. 2, the manufacturing device 7 is a device for manufacturing an electric wire with terminal 100, and applies an anticorrosive agent to an electric wire W having a crimp terminal 1 attached thereto, and hardens the applied anticorrosive agent to manufacture the electric wire with terminal 100.

図２に示すように、製造装置７は、制御装置７１、センサ部７２、塗布装置７３及び硬化装置７４を備えている。制御装置７１は、製造装置７の製造工程における各制御を行うものであり、例えば、ＣＰＵ［Central Processing Unit］等のプロセッサ、ＲＯＭ［Read Only Memory］、ＲＡＭ［Random Access Memory］等のメモリを有するコンピュータを備えて構成される。なお、この製造装置７は、圧着端子１を取り付けた電線Ｗに対し封止部１０を形成して端子付き電線１００を製造するものであるが、圧着端子１を取り付けた電線Ｗの組み立てなどその他の工程を実行する機能を備えていてもよい。 As shown in FIG. 2, the manufacturing apparatus 7 includes a control device 71, a sensor unit 72, an application device 73, and a curing device 74. The control device 71 controls each step in the manufacturing process of the manufacturing apparatus 7, and is configured with a computer having a processor such as a CPU [Central Processing Unit], and memories such as a ROM [Read Only Memory] and a RAM [Random Access Memory]. The manufacturing apparatus 7 forms a sealing portion 10 on an electric wire W to which a crimp terminal 1 is attached, to manufacture an electric wire with terminal 100, but may also have a function of performing other steps, such as assembling the electric wire W to which a crimp terminal 1 is attached.

センサ部７２は、撮像センサであって、防食剤の塗布及び硬化を行う圧着端子１を取り付けた電線Ｗを撮像する撮像器である。センサ部７２は、例えば、圧着端子１を取り付けた電線Ｗを上方（高さ方向Ｚ）から撮像し、撮像した画像データを制御装置７１へ入力する。 The sensor unit 72 is an imaging sensor that captures an image of the electric wire W to which the crimp terminal 1 is attached, to which an anticorrosive agent is applied and hardened. The sensor unit 72 captures an image of the electric wire W to which the crimp terminal 1 is attached, for example, from above (height direction Z), and inputs the captured image data to the control device 71.

制御装置７１は、設定部７１１、塗布制御部７１２、硬化制御部７１３及び記録部７１４を有する。設定部７１１、塗布制御部７１２及び硬化制御部７１３は、例えば、制御装置７１にそれぞれの機能を実行するプログラムを導入することにより構成される。また、設定部７１１、塗布制御部７１２及び硬化制御部７１３は、それぞれの機能を実行する制御ユニットして制御装置７１に個別に設置されていてもよい。 The control device 71 has a setting unit 711, an application control unit 712, a curing control unit 713, and a recording unit 714. The setting unit 711, the application control unit 712, and the curing control unit 713 are configured, for example, by installing programs that execute the respective functions in the control device 71. In addition, the setting unit 711, the application control unit 712, and the curing control unit 713 may be installed individually in the control device 71 as control units that execute the respective functions.

設定部７１１は、防食剤の塗布領域に対し防食剤を塗布する複数の塗布位置を設定すると共に、複数の塗布位置に対し塗布する順番を設定する。例えば、設定部７１１は、センサ部７２の画像データに基づいて防食剤の塗布領域を設定し、塗布領域に対し塗布位置及び塗布順番を設定する。具体的には、図３に示すように、設定部７１１は、圧着端子１を取り付けた電線Ｗの画像において、圧着端子１と電線Ｗを認識する。そして、設定部７１１は、圧着端子１を取り付けた電線Ｗにおける圧着端子１の取付部分に対し塗布領域Ｒを設定する。圧着端子１の取付部分には、電線Ｗの導体部Ｗ１が露出する部分を含んでいる。塗布領域Ｒは、防食剤を塗布する領域であって、例えば、圧着端子１を取り付けた電線Ｗにおける電線接合部４の範囲に設定される。なお、必ずしも塗布領域Ｒの全体に防食剤を塗布する必要はなく、塗布領域Ｒにおいて電線Ｗの導体部Ｗ１が露出する部分など必要な箇所に防食剤を塗布すればよい。 The setting unit 711 sets a plurality of application positions for applying the anticorrosive agent to the application area of the anticorrosive agent, and sets the application order for the plurality of application positions. For example, the setting unit 711 sets the application area of the anticorrosive agent based on the image data of the sensor unit 72, and sets the application positions and application order for the application area. Specifically, as shown in FIG. 3, the setting unit 711 recognizes the crimp terminal 1 and the electric wire W in the image of the electric wire W to which the crimp terminal 1 is attached. Then, the setting unit 711 sets the application area R for the attachment portion of the crimp terminal 1 on the electric wire W to which the crimp terminal 1 is attached. The attachment portion of the crimp terminal 1 includes a portion where the conductor portion W1 of the electric wire W is exposed. The application area R is an area to which the anticorrosive agent is applied, and is set, for example, to the range of the electric wire joint portion 4 of the electric wire W to which the crimp terminal 1 is attached. Note that it is not necessary to apply the anticorrosive agent to the entire application area R, and the anticorrosive agent may be applied to a necessary portion such as a portion where the conductor portion W1 of the electric wire W is exposed in the application area R.

そして、設定部７１１は、塗布領域Ｒにおいて、第一塗布位置Ｐ１及び第二塗布位置Ｐ２を設定する。第一塗布位置Ｐ１は、防食剤の塗布位置であって、塗布領域Ｒのうち周辺部Ｒ１に設定される塗布位置である。周辺部Ｒ１は、塗布領域Ｒのうち領域境界に隣接して位置する領域であり、例えば、塗布領域Ｒの軸方向Ｘにおける一方の端部及び他方の端部にそれぞれ設定される。具体的には、一方の端部の周辺部Ｒ１は端部露出部４９の位置に設定され、他方の端部の周辺部Ｒ１は導体露出部４７の位置に設定される。周辺部Ｒ１は、例えば、塗布領域Ｒの幅方向Ｙに沿った境界隣接部分Ｒ１１と軸方向Ｘに沿った二つの境界隣接部分Ｒ１２を連ねた領域とされる（図７参照）。 The setting unit 711 then sets a first application position P1 and a second application position P2 in the application region R. The first application position P1 is a position where the anticorrosive agent is applied, and is a coating position set in the peripheral portion R1 of the application region R. The peripheral portion R1 is a region of the application region R that is located adjacent to the region boundary, and is set, for example, at one end and the other end in the axial direction X of the application region R. Specifically, the peripheral portion R1 of one end is set at the position of the end exposed portion 49, and the peripheral portion R1 of the other end is set at the position of the conductor exposed portion 47. The peripheral portion R1 is, for example, a region that connects the boundary adjacent portion R11 along the width direction Y of the application region R and two boundary adjacent portions R12 along the axial direction X (see FIG. 7).

第二塗布位置Ｐ２は、防食剤の塗布位置であって、塗布領域Ｒのうち周辺部Ｒ１の内側にある中央部Ｒ２に設定される塗布位置である。第一塗布位置Ｐ１は、塗布領域Ｒにおいて第二塗布位置Ｐ２の外側を囲うように設定されている。つまり、第一塗布位置Ｐ１は、塗布領域Ｒにおいて、第二塗布位置Ｐ２の外側を軸方向Ｘ及び幅方向Ｙに連なって第二塗布位置Ｐ２を囲うように設定されている。また、第一塗布位置Ｐ１及び第二塗布位置Ｐ２は、塗布領域Ｒに複数設定され、導体部Ｗ１が露出する箇所に多く設定されている。例えば、第一塗布位置Ｐ１及び第二塗布位置Ｐ２は、導体露出部４７及び端部露出部４９の範囲に多く設定されている。導体圧着部４６には、バレル片部４２、４３の間の位置に離間して複数の第二塗布位置Ｐ２が設定されている。 The second application position P2 is an application position of the anticorrosive agent, and is an application position set in the central portion R2 inside the peripheral portion R1 of the application region R. The first application position P1 is set so as to surround the outside of the second application position P2 in the application region R. In other words, the first application position P1 is set so as to surround the second application position P2 in the application region R by connecting the outside of the second application position P2 in the axial direction X and the width direction Y. In addition, the first application position P1 and the second application position P2 are set in the application region R in multiple places, and are often set in places where the conductor portion W1 is exposed. For example, the first application position P1 and the second application position P2 are often set in the range of the conductor exposed portion 47 and the end exposed portion 49. In the conductor crimping portion 46, multiple second application positions P2 are set at positions between the barrel pieces 42 and 43 at a distance.

設定部７１１は、第一塗布位置Ｐ１及び第二塗布位置Ｐ２の塗布順番を設定する。第一塗布位置Ｐ１は、第二塗布位置Ｐ２の前に塗布される。つまり、第一塗布位置Ｐ１における防食剤の塗布は第一塗布工程で行われ、第一塗布工程の終了後に第二塗布工程として第二塗布位置Ｐ２における防食剤の塗布が行われる。複数ある第一塗布位置Ｐ１における塗布順番としては、例えば、一つの第一塗布位置Ｐ１の塗布が行われ、塗布した第一塗布位置Ｐ１に隣接又は最も近い第一塗布位置Ｐ１の塗布が行われる。複数ある第二塗布位置Ｐ２における塗布順番も、第一塗布位置Ｐ１の塗布順番と同様とされる。なお、図３において、第一塗布位置Ｐ１及び第二塗布位置Ｐ２は円形で示されているが、円形の中心位置の点として設定されてもよい。 The setting unit 711 sets the application order of the first application position P1 and the second application position P2. The first application position P1 is applied before the second application position P2. In other words, the application of the anticorrosive agent at the first application position P1 is performed in the first application process, and after the first application process is completed, the application of the anticorrosive agent at the second application position P2 is performed as the second application process. As for the application order at the multiple first application positions P1, for example, application is performed at one first application position P1, and then application is performed at the first application position P1 adjacent or closest to the first application position P1 that has been applied. The application order at the multiple second application positions P2 is the same as the application order at the first application position P1. Note that in FIG. 3, the first application position P1 and the second application position P2 are shown as circles, but they may be set as points at the center positions of the circles.

塗布制御部７１２は、塗布装置７３に制御信号を出力し、圧着端子１を取り付けた電線Ｗに対する防食剤の塗布の制御を行う。すなわち、塗布制御部７１２は、設定部７１１により設定された塗布位置（第一塗布位置Ｐ１、第二塗布位置Ｐ２）及び塗布順番に従って防食剤が塗布されるように塗布装置７３を作動させる。塗布装置７３は、図４に示すように、電線接合部４に対し防食剤１１を塗布するノズル７３１を備えている。ノズル７３１は、例えば、軸方向Ｘ及び幅方向Ｙへ移動可能に構成され、上述した塗布位置に対し、一滴ずつ防食剤１１を吐出又は噴射することが可能となっている。ノズル７３１により防食剤１１を吐出又は噴射させることにより、塗布位置への防食剤１１の塗布を正確に行うことができる。 The application control unit 712 outputs a control signal to the application device 73, and controls the application of the anticorrosive agent to the electric wire W to which the crimp terminal 1 is attached. That is, the application control unit 712 operates the application device 73 so that the anticorrosive agent is applied according to the application positions (first application position P1, second application position P2) and application order set by the setting unit 711. As shown in FIG. 4, the application device 73 is provided with a nozzle 731 that applies the anticorrosive agent 11 to the electric wire joint portion 4. The nozzle 731 is configured to be movable, for example, in the axial direction X and the width direction Y, and is capable of ejecting or spraying the anticorrosive agent 11 drop by drop to the above-mentioned application position. By ejecting or spraying the anticorrosive agent 11 from the nozzle 731, the application of the anticorrosive agent 11 to the application position can be performed accurately.

硬化制御部７１３は、硬化装置７４に制御信号を出力し、圧着端子１を取り付けた電線Ｗに塗布された防食剤１１に対する光照射の制御を行う。例えば、硬化制御部７１３は、圧着端子１を取り付けた電線Ｗに対し防食剤１１が塗布された後に、紫外線を防食剤１１に照射するように、硬化装置７４を作動させる。硬化装置７４は、図５に示すように、電線接合部４に対し紫外線を照射する光源７４１を備えている。光源７４１により紫外線を照射された防食剤１１は、硬化して封止部１０となる。 The curing control unit 713 outputs a control signal to the curing device 74 and controls the light irradiation of the anticorrosive agent 11 applied to the electric wire W to which the crimp terminal 1 is attached. For example, the curing control unit 713 operates the curing device 74 to irradiate the anticorrosive agent 11 with ultraviolet light after the anticorrosive agent 11 is applied to the electric wire W to which the crimp terminal 1 is attached. As shown in FIG. 5, the curing device 74 includes a light source 741 that irradiates the electric wire joint portion 4 with ultraviolet light. The anticorrosive agent 11 irradiated with ultraviolet light by the light source 741 is cured to become the sealing portion 10.

図２において、記録部７１４は、電線製造に関する制御情報を記録するメモリである。例えば、記録部７１４は、塗布位置データ、塗布順番データ、光の照射タイミングデータなどを記録する。 In FIG. 2, the recording unit 714 is a memory that records control information related to wire manufacturing. For example, the recording unit 714 records application position data, application order data, light irradiation timing data, etc.

次に、本実施形態に係る端子付き電線製造方法について詳述する。 Next, the method for manufacturing an electric wire with terminal according to this embodiment will be described in detail.

端子付き電線１００の製造は、圧着端子１を取り付けた電線Ｗに対し封止部１０を形成して行われる。図６に端子付き電線製造方法のフローチャートを示す。図６のフローチャートは、防食剤１１の塗布処理及び硬化処理を示すフローチャートであり、例えば、圧着端子１を取り付けた電線Ｗが塗布位置に設置された時に開始され、制御装置７１により実行される。 The electric wire with terminal 100 is manufactured by forming a sealing portion 10 on an electric wire W to which a crimp terminal 1 is attached. Figure 6 shows a flowchart of the method for manufacturing an electric wire with terminal. The flowchart in Figure 6 shows the coating process and hardening process of the anticorrosive agent 11, and is started, for example, when the electric wire W to which the crimp terminal 1 is attached is placed at the coating position, and is executed by the control device 71.

まず、ステップＳＴ１０（以下、単に「ＳＴ１０」と示す。以降のステップＳＴについても同様とする。）に示すように、第一塗布工程が行われる。第一塗布工程は、防食剤１１の塗布領域Ｒにおける周辺部Ｒ１に対し防食剤１１の塗布を行う工程である。例えば、図２に示すように、塗布制御部７１２から塗布装置７３へ制御信号が出力され、塗布装置７３が作動する。そして、図４に示すように、塗布装置７３のノズル７３１から防食剤１１が吐出され、圧着端子１が取り付けられた電線Ｗに対し防食剤１１が塗布される。図３に示すように、第一塗布工程において、防食剤１１は、塗布領域Ｒの第一塗布位置Ｐ１に対して行われる。このとき、各々の第一塗布位置Ｐ１に対し一滴の防食剤１１が吐出されて、防食剤１１の塗布が行われる。そして、予め設定された塗布順番に従って第一塗布位置Ｐ１に対し塗布が行われていく。 First, as shown in step ST10 (hereinafter, simply referred to as "ST10". The same applies to subsequent steps ST), a first application step is performed. The first application step is a step of applying the anticorrosive agent 11 to the peripheral portion R1 of the application area R of the anticorrosive agent 11. For example, as shown in FIG. 2, a control signal is output from the application control unit 712 to the application device 73, and the application device 73 is operated. Then, as shown in FIG. 4, the anticorrosive agent 11 is discharged from the nozzle 731 of the application device 73, and the anticorrosive agent 11 is applied to the electric wire W to which the crimp terminal 1 is attached. As shown in FIG. 3, in the first application step, the anticorrosive agent 11 is applied to the first application position P1 of the application area R. At this time, one drop of the anticorrosive agent 11 is discharged to each first application position P1, and the anticorrosive agent 11 is applied. Then, application is performed to the first application position P1 according to a preset application order.

第一塗布位置Ｐ１は塗布領域Ｒの周辺部Ｒ１に設定されているため、第一塗布工程において防食剤１１が塗布領域Ｒの周辺部Ｒ１に対して塗布される。なお、防食剤１１の塗布は、塗布領域Ｒの周辺部Ｒ１の全体に行われる必要はなく、塗布領域Ｒの少なくとも軸方向Ｘの両端部の周辺部Ｒ１に対して行われる。例えば、図３に示すように、塗布領域Ｒの周辺部Ｒ１として、導体露出部４７の周辺部Ｒ１及び端部露出部４９の周辺部Ｒ１に防食剤１１が塗布される。導体圧着部４６については、中央部Ｒ２のみに防食剤１１が塗布され、周辺部分には防食剤１１が塗布されない。導体圧着部４６では、中心の部分に離間した第二塗布位置Ｐ２に対し少量の防食剤１１が塗布され、塗布領域Ｒの周辺部分に防食剤１１を塗布しなくても塗布領域Ｒの外部へ防食剤１１が漏れ出す可能性が低いからである。なお、圧着端子１を取り付けた電線Ｗの構造や塗布領域Ｒの設定によっては、第一塗布工程において、防食剤１１の塗布が塗布領域Ｒの周辺部Ｒ１の全体に行われる場合もある。 Since the first application position P1 is set to the peripheral portion R1 of the application area R, the corrosion inhibitor 11 is applied to the peripheral portion R1 of the application area R in the first application step. The application of the corrosion inhibitor 11 does not need to be performed on the entire peripheral portion R1 of the application area R, but is performed on at least the peripheral portion R1 of both ends of the application area R in the axial direction X. For example, as shown in FIG. 3, the corrosion inhibitor 11 is applied to the peripheral portion R1 of the conductor exposed portion 47 and the peripheral portion R1 of the end exposed portion 49 as the peripheral portion R1 of the application area R. For the conductor crimping portion 46, the corrosion inhibitor 11 is applied only to the central portion R2, and the corrosion inhibitor 11 is not applied to the peripheral portion. In the conductor crimping portion 46, a small amount of the corrosion inhibitor 11 is applied to the second application position P2 spaced from the center portion, and even if the corrosion inhibitor 11 is not applied to the peripheral portion of the application area R, the corrosion inhibitor 11 is unlikely to leak out of the application area R. Depending on the structure of the electric wire W to which the crimp terminal 1 is attached and the setting of the coating area R, the anticorrosive agent 11 may be applied to the entire periphery R1 of the coating area R in the first coating process.

そして、図６のＳＴ１２に処理が移行し、第一硬化工程が行われる。第一硬化工程は、第一塗布工程により塗布領域Ｒに塗布された防食剤１１を硬化させて封止部１０とする工程である。例えば、図２に示すように、硬化制御部７１３から硬化装置７４に制御信号が出力され、硬化装置７４が作動する。そして、図５に示すように、光源７４１から紫外線が射出され、塗布領域Ｒに塗布された防食剤１１に対し紫外線が照射される。これにより、防食剤１１が硬化し、封止部１０となる。このとき、塗布領域Ｒの周辺部Ｒ１に防食剤１１が塗布されており、紫外線の照射により塗布領域Ｒの周辺部分に封止部１０が形成される。 Then, the process moves to ST12 in FIG. 6, where the first curing process is performed. The first curing process is a process in which the anticorrosive agent 11 applied to the application region R in the first application process is cured to form the sealing portion 10. For example, as shown in FIG. 2, a control signal is output from the curing control unit 713 to the curing device 74, and the curing device 74 is operated. Then, as shown in FIG. 5, ultraviolet light is emitted from the light source 741, and the anticorrosive agent 11 applied to the application region R is irradiated with the ultraviolet light. This causes the anticorrosive agent 11 to cure and become the sealing portion 10. At this time, the anticorrosive agent 11 is applied to the peripheral portion R1 of the application region R, and the sealing portion 10 is formed in the peripheral portion of the application region R by irradiation with ultraviolet light.

そして、図６のＳＴ１４に処理が移行し、第二塗布工程が行われる。第二塗布工程は、防食剤１１の塗布領域Ｒにおける中央部Ｒ２に対し防食剤１１の塗布を行う工程である。第二塗布工程では、少なくとも第一塗布工程において塗布領域Ｒの周辺部Ｒ１に塗布された防食剤１１の内側の中央部Ｒ２に防食剤１１が塗布される。例えば、図２に示すように、塗布制御部７１２から塗布装置７３へ制御信号が出力され、塗布装置７３が作動する。そして、図４に示すように、塗布装置７３のノズル７３１から防食剤１１が吐出され、圧着端子１が取り付けられた電線Ｗに対し防食剤１１が塗布される。 Then, the process moves to ST14 in FIG. 6, where the second application process is performed. In the second application process, the corrosion inhibitor 11 is applied to the center portion R2 of the application area R of the corrosion inhibitor 11. In the second application process, the corrosion inhibitor 11 is applied to at least the center portion R2 inside the corrosion inhibitor 11 applied to the peripheral portion R1 of the application area R in the first application process. For example, as shown in FIG. 2, a control signal is output from the application control unit 712 to the application device 73, and the application device 73 is operated. Then, as shown in FIG. 4, the corrosion inhibitor 11 is discharged from the nozzle 731 of the application device 73, and the corrosion inhibitor 11 is applied to the electric wire W to which the crimp terminal 1 is attached.

図３に示すように、第二塗布工程において、防食剤１１は、塗布領域Ｒの第二塗布位置Ｐ２に対して行われる。このとき、各々の第二塗布位置Ｐ２に対し一滴の防食剤１１が吐出されて、防食剤１１の塗布が行われる。そして、予め設定された塗布順番に従って各第二塗布位置Ｐ２に対し塗布が行われていく。第二塗布位置Ｐ２は塗布領域Ｒの中央部Ｒ２に設定されているため、第二塗布工程において防食剤１１が塗布領域Ｒの中央部Ｒ２に対して塗布される。なお、防食剤１１の塗布は、塗布領域Ｒの周辺部Ｒ１に防食剤１１が塗布されていない内側の部分に塗布されてもよい。例えば、図３に示すように、被覆圧着部４８において、周辺部分に防食剤１１が塗布されいないが、その中央部Ｒ２へ防食剤１１がされる。 As shown in FIG. 3, in the second application step, the corrosion inhibitor 11 is applied to the second application position P2 of the application area R. At this time, one drop of the corrosion inhibitor 11 is discharged to each second application position P2, and the corrosion inhibitor 11 is applied. Then, application is performed to each second application position P2 according to a preset application order. Since the second application position P2 is set to the center R2 of the application area R, the corrosion inhibitor 11 is applied to the center R2 of the application area R in the second application step. The corrosion inhibitor 11 may be applied to the inner part of the application area R where the corrosion inhibitor 11 is not applied to the peripheral part R1. For example, as shown in FIG. 3, in the coating pressure bonding part 48, the corrosion inhibitor 11 is not applied to the peripheral part, but the corrosion inhibitor 11 is applied to the central part R2.

このように、塗布領域Ｒに対する防食剤１１の塗布について、第一塗布工程で周辺部Ｒ１を先に塗布し、その後に第二塗布工程で周辺部Ｒ１の内側の中央部Ｒ２を塗布することにより、塗布領域Ｒに対して防食剤１１を適切に塗布することができる。すなわち、図７に示すように、塗布領域Ｒの第二塗布位置Ｐ２に防食剤１１が塗布されると、防食剤１１は濡れ広がっていく。しかし、先に第一塗布位置Ｐ１に塗布された防食剤１１は硬化して封止部１０となっている。このため、第一塗布位置Ｐ１の防食剤１１が第二塗布位置Ｐ２の防食剤１１と合流して流れ出すことはない。また、第一塗布位置Ｐ１の防食剤１１が硬化した封止部１０が外壁となり、第二塗布位置Ｐ２の防食剤１１が塗布領域Ｒの外部へ流れ出ることを抑制する。従って、塗布領域Ｒの外部へ防食剤１１が漏れ出すことを抑制でき、塗布領域Ｒ内に塗り残しを無くして防食剤１１を確実に塗布することができる。つまり、塗布領域Ｒに対し防食剤１１を適切に塗布することが可能となる。 In this way, the anticorrosive agent 11 can be applied appropriately to the coating region R by first applying the peripheral portion R1 in the first application step and then applying the central portion R2 inside the peripheral portion R1 in the second application step. That is, as shown in FIG. 7, when the anticorrosive agent 11 is applied to the second application position P2 of the coating region R, the anticorrosive agent 11 spreads wet. However, the anticorrosive agent 11 applied first to the first application position P1 hardens to become the sealing portion 10. Therefore, the anticorrosive agent 11 at the first application position P1 does not merge with the anticorrosive agent 11 at the second application position P2 and flow out. In addition, the sealing portion 10 where the anticorrosive agent 11 at the first application position P1 hardens becomes an outer wall, and the anticorrosive agent 11 at the second application position P2 is prevented from flowing out of the coating region R. Therefore, the anticorrosive agent 11 can be prevented from leaking out of the coating region R, and the anticorrosive agent 11 can be reliably applied without leaving any part of the coating region R uncoated. In other words, it is possible to properly apply the anticorrosive agent 11 to the application area R.

そして、図６のＳＴ１６に処理が移行し、第二硬化工程が行われる。第二硬化工程は、第二塗布工程により塗布領域Ｒに塗布された防食剤１１を硬化させて封止部１０とする工程である。例えば、図２に示すように、硬化制御部７１３から硬化装置７４に制御信号が出力され、硬化装置７４が作動する。そして、図８に示すように、光源７４１から紫外線が射出され、塗布領域Ｒに塗布された防食剤１１に対し紫外線が照射される。これにより、防食剤１１が硬化し、封止部１０となる。このとき、塗布領域Ｒの中央部Ｒ２に防食剤１１が塗布されており、紫外線の照射により塗布領域Ｒの中央部分に封止部１０が形成され、封止部１０全体が形成が完了する。そして、ＳＴ１６の第二硬化工程の処理が終了したら、図６の一連の制御処理を終了する。 Then, the process moves to ST16 in FIG. 6, where the second curing process is performed. The second curing process is a process in which the anticorrosive agent 11 applied to the application region R in the second application process is cured to form the sealing portion 10. For example, as shown in FIG. 2, a control signal is output from the curing control unit 713 to the curing device 74, and the curing device 74 is operated. Then, as shown in FIG. 8, ultraviolet light is emitted from the light source 741, and the anticorrosive agent 11 applied to the application region R is irradiated with ultraviolet light. As a result, the anticorrosive agent 11 is cured to form the sealing portion 10. At this time, the anticorrosive agent 11 is applied to the center portion R2 of the application region R, and the sealing portion 10 is formed in the center portion of the application region R by irradiation with ultraviolet light, and the formation of the entire sealing portion 10 is completed. Then, when the second curing process process in ST16 is completed, the series of control processes in FIG. 6 is terminated.

以上のように、本実施形態に係る端子付き電線製造方法によれば、塗布領域Ｒに対する防食剤１１の塗布において、周辺部Ｒ１を先に塗布し、その後に周辺部Ｒ１の内側の中央部Ｒ２に塗布を行う。このため、本実施形態に係る端子付き電線製造方法は、塗布領域Ｒに対して防食剤１１を適切に塗布することができ、端子付き電線１００において適正な防食機能を確保することができる。 As described above, according to the method for manufacturing an electric wire with terminal of this embodiment, when applying the anticorrosive agent 11 to the application area R, the peripheral area R1 is applied first, and then the central area R2 inside the peripheral area R1 is applied. Therefore, the method for manufacturing an electric wire with terminal of this embodiment can properly apply the anticorrosive agent 11 to the application area R, and can ensure proper anticorrosion function in the electric wire with terminal 100.

また、本実施形態に係る端子付き電線製造方法は、塗布領域Ｒに対して防食剤１１を適切に塗布することができるため、接点部である電気接続部２へ防食剤１１が付着することが避けられ、適正な端子付き電線１００を製造することができる。 In addition, the method for manufacturing an electric wire with terminal according to this embodiment can properly apply the anticorrosive agent 11 to the application area R, which prevents the anticorrosive agent 11 from adhering to the electrical connection portion 2, which is the contact portion, and allows the proper production of an electric wire with terminal 100.

また、本実施形態に係る端子付き電線製造方法は、塗布領域Ｒの軸方向Ｘにおける両端部の周辺部Ｒ１に対し防食剤１１を塗布し、両端部の周辺部Ｒ１の間の中央部Ｒ２を埋めるように防食剤１１を塗布する。このため、塗布領域Ｒから防食剤１１が流れ出すことを抑制しつつ、塗布領域Ｒに対し適切に防食剤１１を塗布することができる。従って、本実施形態に係る端子付き電線製造方法は、適正な防食機能を持つ端子付き電線１００を製造することができる。 The method for manufacturing an electric wire with terminal according to this embodiment applies the anticorrosive agent 11 to the peripheral portions R1 of both ends in the axial direction X of the application region R, and applies the anticorrosive agent 11 so as to fill the central portion R2 between the peripheral portions R1 of both ends. This makes it possible to appropriately apply the anticorrosive agent 11 to the application region R while preventing the anticorrosive agent 11 from flowing out of the application region R. Therefore, the method for manufacturing an electric wire with terminal according to this embodiment can manufacture an electric wire with terminal 100 that has an appropriate anticorrosive function.

また、本実施形態に係る端子付き電線製造方法は、第一塗布工程において、塗布領域Ｒの幅方向Ｙに沿った境界隣接部分Ｒ１１と軸方向Ｘに沿った二つの境界隣接部分Ｒ１２を連ねた周辺部Ｒ１に対し防食剤１１を塗布することにより、塗布領域Ｒの中央部Ｒ２の外側を囲って防食剤１１を塗布することができる。このため、第二塗布工程で中央部Ｒ２に塗布される防食剤１１が塗布領域Ｒの外部へ流れ出ることを抑制することができる。従って、塗布領域Ｒに対し防食剤１１を適切に塗布することができる。 In addition, in the manufacturing method of the electric wire with terminal according to this embodiment, in the first application step, the corrosion inhibitor 11 is applied to the peripheral portion R1 that connects the boundary adjacent portion R11 along the width direction Y of the application area R and the two boundary adjacent portions R12 along the axial direction X, so that the corrosion inhibitor 11 can be applied to the outside of the central portion R2 of the application area R. This makes it possible to prevent the corrosion inhibitor 11 applied to the central portion R2 in the second application step from flowing out of the application area R. Therefore, the corrosion inhibitor 11 can be appropriately applied to the application area R.

また、本実施形態に係る端子付き電線製造方法は、周辺部Ｒ１に塗布された防食剤１１を硬化させた後に、周辺部Ｒ１の内側の中央部Ｒ２に防食剤１１を塗布して硬化させる。このため、塗布領域Ｒに対して防食剤１１を適切に塗布し硬化させることができる。 In addition, in the method for manufacturing an electric wire with a terminal according to this embodiment, the anticorrosive agent 11 applied to the peripheral portion R1 is hardened, and then the anticorrosive agent 11 is applied to the central portion R2 inside the peripheral portion R1 and hardened. Therefore, the anticorrosive agent 11 can be appropriately applied to the application region R and hardened.

なお、上述した本発明の実施形態に係る端子付き電線製造方法は、上述した実施形態に限定されず、特許請求の範囲に記載された範囲で種々の変更が可能である。本実施形態に係る端子付き電線製造方法は、以上で説明した各実施形態、変形例の構成要素を適宜組み合わせることで構成してもよい。 The method for manufacturing an electric wire with a terminal according to the embodiment of the present invention described above is not limited to the above-described embodiment, and various modifications are possible within the scope of the claims. The method for manufacturing an electric wire with a terminal according to this embodiment may be constructed by appropriately combining the components of each of the embodiments and modified examples described above.

例えば、上述した実施形態に係る端子付き電線製造方法では、センサ部７２の画像データに基づいて防食剤１１の塗布領域Ｒを設定し、塗布領域に対し塗布位置及び塗布順番を設定しているが、圧着端子１を取り付けた電線Ｗが予め設定された基準位置にセットされる場合、予め設定された塗布領域、塗布位置及び塗布順番で防食剤１１を塗布してもよい。この場合であっても、上述した実施形態に係る端子付き電線製造方法と同じ作用効果を得ることができる。 For example, in the method for manufacturing an electric wire with terminal according to the embodiment described above, the application area R of the anticorrosive agent 11 is set based on image data from the sensor unit 72, and the application position and application order are set for the application area, but when the electric wire W to which the crimp terminal 1 is attached is set at a preset reference position, the anticorrosive agent 11 may be applied to the application area, application position, and application order that are preset. Even in this case, the same effects as those of the method for manufacturing an electric wire with terminal according to the embodiment described above can be obtained.

１ 圧着端子
１１ 防食剤
４６ 導体圧着部
４７ 導体露出部
４８ 被覆圧着部
１００ 端子付き電線
Ｐ１ 第一塗布位置
Ｐ２ 第二塗布位置
Ｒ 塗布領域
Ｒ１ 周辺部
Ｒ２ 中央部
Ｒ１１ 境界隣接部分
Ｒ１２ 境界隣接部分
Ｗ 電線
Ｗ１ 導体部
Ｗ２ 絶縁被覆部


 1 Crimp terminal 11 Anticorrosive agent 46 Conductor crimping portion 47 Conductor exposed portion 48 Cover crimping portion 100 Electric wire with terminal P1 First application position P2 Second application position R Application region R1 Periphery R2 Central portion R11 Boundary adjacent portion R12 Boundary adjacent portion W Electric wire W1 Conductor portion W2 Insulating cover portion

Claims (4)

圧着端子を取り付けた電線において前記電線の導体部が露出する部分を含む前記圧着端子の取付部分に対し液状の防食剤を塗布する塗布工程と、
前記取付部分に塗布された前記防食剤を硬化させる硬化工程と、を含み、
前記塗布工程は、前記防食剤が塗布される塗布領域のうち領域境界に隣接して位置する周辺部に対し前記防食剤の塗布を行う第一塗布工程と、前記周辺部の塗布の後に前記塗布領域における前記周辺部の内側にある中央部に対し前記防食剤の塗布を行う第二塗布工程と、を含む、
端子付き電線製造方法。 a coating step of coating a liquid anticorrosive agent onto a mounting portion of the crimp terminal, the mounting portion including a portion of the electric wire where a conductor portion of the electric wire is exposed, the crimp terminal being attached to the electric wire;
and a hardening step of hardening the anticorrosive agent applied to the mounting portion,
The coating step includes a first coating step of coating the anticorrosive agent to a peripheral portion of the coating area to which the anticorrosive agent is applied, the peripheral portion being adjacent to a boundary of the coating area, and a second coating step of coating the anticorrosive agent to a central portion of the coating area inside the peripheral portion after coating the peripheral portion.
Manufacturing method for electric wire with terminal. 前記第一塗布工程は、前記塗布領域において前記電線の軸方向における一方の端部及び他方の端部の前記周辺部に対し前記防食剤の塗布を行い、
前記第二塗布工程は、前記一方の端部の前記周辺部と前記他方の端部の前記周辺部との間の前記中央部を埋めるように前記防食剤の塗布を行う、
請求項１に記載の端子付き電線製造方法。 The first application step includes applying the anticorrosive agent to the peripheral portions of one end and the other end of the electric wire in the axial direction in the application region,
The second application step applies the anticorrosive agent so as to fill the central portion between the peripheral portion of the one end portion and the peripheral portion of the other end portion.
The method for producing an electric wire with a terminal according to claim 1 . 前記塗布領域の前記周辺部は、前記塗布領域の前記電線の幅方向に沿った境界隣接部分と前記電線の軸方向に沿った境界隣接部分を連ねた領域であり、前記中央部の外側を囲うように設定されている、
請求項１に記載の端子付き電線製造方法。 The peripheral portion of the coating area is a region including a boundary adjacent portion of the coating area along the width direction of the electric wire and a boundary adjacent portion of the coating area along the axial direction of the electric wire, and is set to surround the outside of the central portion.
The method for producing an electric wire with a terminal according to claim 1 . 前記硬化工程は、前記第一塗布工程により塗布された前記防食剤の硬化を行う第一硬化工程と、前記第二塗布工程により塗布された前記防食剤の硬化を行う第二硬化工程と、を含む、
請求項１～３のいずれか一項に記載の端子付き電線製造方法。 The hardening step includes a first hardening step of hardening the anticorrosive agent applied in the first application step, and a second hardening step of hardening the anticorrosive agent applied in the second application step.
The method for manufacturing an electric wire with a terminal according to any one of claims 1 to 3.
JP2022193939A 2022-12-05 2022-12-05 Manufacturing method for electric wire with terminal Pending JP2024080751A (en)

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