JP2024080748A - Manufacturing method for electric wire with terminal - Google Patents

Manufacturing method for electric wire with terminal Download PDF

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JP2024080748A
JP2024080748A JP2022193936A JP2022193936A JP2024080748A JP 2024080748 A JP2024080748 A JP 2024080748A JP 2022193936 A JP2022193936 A JP 2022193936A JP 2022193936 A JP2022193936 A JP 2022193936A JP 2024080748 A JP2024080748 A JP 2024080748A
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electric wire
coating
terminal
application
anticorrosive agent
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健三 田中
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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において被覆圧着部48と導体圧着部46の間の導体露出部47に対し液状の防食剤11を塗布する塗布工程ST10と、導体露出部47に塗布された防食剤11を硬化させる硬化工程ST12とを含み、複数の塗布位置P11~P16に対し防食剤11を吐出させて導体露出部47への塗布を行い、導体露出部47において電線Wの延在方向に対し複数の列に分けて塗布位置P11~P16を設定し、鉛直方向下側の列から鉛直方向上側の列への順に塗布を行う。【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 a proper anticorrosive function. [Solution] The method for manufacturing an electric wire with terminal includes an application step ST10 in which a liquid anticorrosive agent 11 is applied to a conductor exposed portion 47 between a coating crimp portion 48 and a conductor crimp portion 46 of an electric wire W to which a crimp terminal 1 is attached, and a hardening step ST12 in which the anticorrosive agent 11 applied to the conductor exposed portion 47 is hardened by discharging the anticorrosive agent 11 to a plurality of application positions P11 to P16 to apply the anticorrosive agent 11 to the conductor exposed portion 47, the application positions P11 to P16 are set in a plurality of rows in the extension direction of the electric wire W in the conductor exposed portion 47, and application is performed in order from the row at the lower side in the vertical direction to the row at the upper side in the vertical direction. [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1~4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, methods for manufacturing electric wires with terminals have been known in which an anticorrosive agent is applied to the joint between the electric wire and the terminal in an electric wire with terminal, and then hardened to seal the joint between the electric wire and the terminal from the outside, thereby preventing corrosion, as described in, for example, Patent Documents 1 to 4.

特開2015-153721号公報JP 2015-153721 A 特開2016-225171号公報JP 2016-225171 A 特開2015-153715号公報JP 2015-153715 A 特開2014-130703号公報JP 2014-130703 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、電線の絶縁被覆部に圧着される被覆圧着部、絶縁被覆部の端部から露出する導体部に圧着される導体圧着部、及び、被覆圧着部と導体圧着部の間に形成される導体露出部を有する圧着端子を取り付けた前記電線において、導体露出部に対し液状の防食剤を塗布する塗布工程と、導体露出部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、記塗布工程は、導体露出部に設定される複数の異なる塗布位置に対し防食剤を吐出させて塗布を行い、複数の異なる塗布位置は、導体露出部において前記電線の延在方向に対し複数の列に分けて設定され、鉛直方向下側の列から鉛直方向上側の列への順に塗布されるように構成される。 That is, the method for manufacturing an electric wire with a terminal according to the present invention includes a coating crimping portion that is crimped to the insulating coating of an electric wire, a conductor crimping portion that is crimped to the conductor portion exposed from the end of the insulating coating, and a crimp terminal having a conductor exposed portion formed between the coating crimping portion and the conductor crimping portion, and includes a coating step of coating a liquid anticorrosive agent to the conductor exposed portion, and a curing step of curing the anticorrosive agent applied to the conductor exposed portion, and the coating step is performed by discharging the anticorrosive agent to a plurality of different coating positions set on the conductor exposed portion, and the plurality of different coating positions are set in a plurality of rows in the extension direction of the electric wire in the conductor exposed portion, and the anticorrosive agent is applied in order from the vertically lower row to the vertically upper row.

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。 The method for manufacturing an electric wire with terminal according to the present invention can properly apply an anticorrosive agent to the joint between the electric wire and the terminal of the 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変形例の説明図である。FIG. 8 is an explanatory diagram of a modified example of the method for manufacturing an electric wire with a terminal according to the embodiment. 図9は、実施形態に係る端子付き電線製造方法の変形例の説明図である。FIG. 9 is an explanatory diagram of a modified example of the method for manufacturing an electric wire with a terminal according to the embodiment. 図10は、実施形態に係る端子付き電線製造方法の変形例の説明図である。FIG. 10 is an explanatory diagram of a modified example of the method for manufacturing an electric wire with a terminal according to the embodiment. 図11は、実施形態に係る端子付き電線製造方法の変形例の説明図である。FIG. 11 is an explanatory diagram of a modified example of the method for manufacturing an electric wire with a terminal according to the embodiment. 図12は、実施形態に係る端子付き電線製造方法の変形例の説明図である。FIG. 12 is an explanatory diagram of a modified example 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、ここでいう直交とはほぼ直交を含む。 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 in which each part is assembled with respect to each other. Note that orthogonal here includes nearly orthogonal.

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。 The electric wire W is, for example, composed of a conductive linear conductor W1 and an insulating coating W2 that covers the outside of the conductor W1. That is, the electric wire W is an insulated electric wire in which the conductor W1 is coated with the insulating coating W2. The conductor 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. The conductor W1 may be a twisted core wire in which multiple wires are twisted together. The insulating coating W2 is an electric wire coating that covers the outer periphery of the conductor W1. The insulating coating 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.).

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 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 as to extend 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, and other portions, to form a three-dimensional integral shape. 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, arranged 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 irradiating the applied anticorrosive agent with light to cure it.

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。 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 position where an anticorrosive agent is applied 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 flow chart 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.

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.

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。 The manufacturing device 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 device 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 device 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を接続する電線接合部4を認識する。そして、設定部711は、電線接合部4に対し塗布領域R1を設定する。塗布領域R1は、導体露出部47の範囲に設定される。また、設定部711は、電線接合部4に対し、塗布領域R2を設定する。塗布領域R2は、導体圧着部46及び端部露出部49の範囲に設定される。ここでは、二つの塗布領域が設定されているが、高さの異なる領域や傾斜のある領域が一つである場合には一つの塗布領域が設定されてもよい。また、高さの異なる領域や傾斜のある領域が三つ以上ある場合には三つ以上の塗布領域が設定されてもよい。 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 electric wire joint 4 that connects 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 R1 for the electric wire joint 4. The application area R1 is set within the range of the conductor exposed portion 47. In addition, the setting unit 711 sets the application area R2 for the electric wire joint 4. The application area R2 is set within the range of the conductor crimp portion 46 and the end exposed portion 49. Here, two application areas are set, but if there is one area with different heights or one area with inclination, one application area may be set. In addition, if there are three or more areas with different heights or three or more areas with inclination, three or more application areas may be set.

そして、設定部711は、塗布領域R1において、塗布位置及び塗布順番を設定する。塗布位置は、導体部W1が露出する部分に設定される。これにより、導体部W1が露出する部分に封止部10が形成される。このとき、塗布位置は、例えば、露出する部分を網羅し防食剤が塗布領域から流れ出ないように塗布量を考慮して設定される。また、設定部711は、塗布領域R2において、塗布位置及び塗布順番を設定する。塗布位置は、導体部W1が露出する部分に設定される。 The setting unit 711 then sets the application positions and application order in the application region R1. The application positions are set to the portions where the conductor portion W1 is exposed. As a result, a sealing portion 10 is formed in the portions where the conductor portion W1 is exposed. At this time, the application positions are set, for example, taking into consideration the amount of application so as to cover the exposed portions and prevent the anticorrosive agent from flowing out of the application region. The setting unit 711 also sets the application positions and application order in the application region R2. The application positions are set to the portions where the conductor portion W1 is exposed.

塗布領域R1において、例えば、塗布位置P11~P16が設定される。塗布位置P11~P16は、異なる位置に設定される複数の塗布位置であり、電線Wの延在方向(軸方向X)に対し複数の列に分けて設定される。例えば、塗布領域R1には、幅方向Yに向けた三つ列が設定され、導体圧着部46側から第一列、第二列、第三列の順で設定される。第一列には塗布位置P11が設定され、第二列には塗布位置P12、P13が横並び設定され、第三列には塗布位置P14、P15、P16が横並びに設定される。 In the coating region R1, for example, coating positions P11 to P16 are set. Coating positions P11 to P16 are multiple coating positions set at different positions, and are set in multiple rows in the extension direction (axial direction X) of the electric wire W. For example, three rows are set in the coating region R1 in the width direction Y, and are set in the order of the first row, second row, and third row from the conductor crimping portion 46 side. Coating position P11 is set in the first row, coating positions P12 and P13 are set side by side in the second row, and coating positions P14, P15, and P16 are set side by side in the third row.

この塗布領域R1において、塗布位置P11~P16の塗布順番は、位置の低い列ほど早い塗布の順番とされる。言い換えれば、鉛直方向下側の列から鉛直方向上側の列への順に塗布が行われる。具体的には、第一列の塗布位置P11、第二列の塗布位置P12、P13、第三列の塗布位置P14、P15、P16の順番で塗布が行われる。導体露出部47は、上述したように、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。このため、第一例、第二列及び第三列は高さが異なり、第一列は第二列より低く下側の位置となっており、第二列は第三列より低く下側の位置となっている。このように、低い位置から高い位置に向けて防食剤が塗布されることにより、防食剤を適切に塗布することが可能となる。なお、ここでは、電線Wの延在方向に対し三つ列に分けて塗布位置が設定されているが、列は二つ又は四つ以上に設定されてもよい。 In this coating region R1, the coating order of the coating positions P11 to P16 is such that the lower the row, the earlier the coating order. In other words, coating is performed in the order from the vertically lower row to the vertically upper row. Specifically, coating is performed in the order of coating position P11 in the first row, coating positions P12 and P13 in the second row, and coating positions P14, P15, and P16 in the third row. As described above, 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. For this reason, the first example, the second row, and the third row have different heights, and the first row is located lower and lower than the second row, and the second row is located lower and lower than the third row. In this way, the anticorrosive agent is applied from a low position to a high position, making it possible to appropriately apply the anticorrosive agent. Note that here, the coating positions are set in three rows in the extension direction of the electric wire W, but the number of rows may be set to two or four or more.

また、複数の列において、防食剤の塗布位置は、下側の列に対し上側の列に多く設定される。例えば、第一列に一つの塗布位置P11が設定され、第二列に二つの塗布位置P12、P13が設定され、第三列に三つの塗布位置P14、P15、P16が設定される。このように、塗布位置P11~P16が低い位置に対し高い位置に多く設定されることにより、上方から見て矩形となる塗布領域R1に対し防食剤を適切に塗布することができる。すなわち、低い位置に塗布位置が少なくても後から塗布される高い位置の防食剤が下方へ流れて塗布領域R1の全体を網羅して塗布でき、塗布領域R1から防食剤が流れ出ることを抑制することができる。この場合、塗布位置P11~P16が低い位置から高い位置に向けて逆三角形となるように設定されてもよい。ここで、逆三角形は、ほぼ逆三角形を含む。 In addition, in the multiple rows, the anticorrosive agent application positions are set more in the upper rows than in the lower rows. For example, one application position P11 is set in the first row, two application positions P12 and P13 are set in the second row, and three application positions P14, P15, and P16 are set in the third row. In this way, by setting the application positions P11 to P16 more in high positions than in low positions, the anticorrosive agent can be appropriately applied to the application area R1, which is rectangular when viewed from above. In other words, even if there are fewer application positions in low positions, the anticorrosive agent applied later at higher positions flows downward, so that the entire application area R1 can be covered and applied, and the anticorrosive agent can be prevented from flowing out of the application area R1. In this case, the application positions P11 to P16 may be set to form an inverted triangle from a low position to a high position. Here, the inverted triangle includes an almost inverted triangle.

塗布領域R2において、例えば、塗布位置P21~P24が設定される。塗布位置P21は、導体圧着部46の中央位置であって導体露出部47寄りの位置に設定される。塗布位置P22は、導体圧着部46の中央位置であって塗布位置P21に対し端部露出部49側の位置に設定される。塗布位置P23及びP24は、端部露出部49の位置に横並びに設定される。この塗布領域R2において、塗布位置P21~P24の塗布順番は、低い位置の塗布位置ほど早く塗布の順番とされる。すなわち、塗布位置P21、P22、P23、P24の順番で塗布が行われる。導体圧着部46は端部露出部49より低い位置にあるため、導体圧着部46に設定される塗布位置P21、P22が先に塗布される。このように、低い位置から高い位置に向けて防食剤が塗布されることにより、防食剤を適切に塗布することができる。なお、図3において、塗布位置P11~P16、P21~P24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。 In the coating region R2, for example, coating positions P21 to P24 are set. Coating position P21 is set at the center of the conductor crimping portion 46 and is set at a position closer to the conductor exposed portion 47. Coating position P22 is set at the center of the conductor crimping portion 46 and is set at a position closer to the end exposed portion 49 than coating position P21. Coating positions P23 and P24 are set side by side at the end exposed portion 49. In this coating region R2, the coating order of coating positions P21 to P24 is such that the lower the coating position, the earlier the coating order. That is, coating is performed in the order of coating positions P21, P22, P23, and P24. Since the conductor crimping portion 46 is located lower than the end exposed portion 49, coating positions P21 and P22 set in the conductor crimping portion 46 are coated first. In this way, the anticorrosive agent is applied from a low position to a high position, so that the anticorrosive agent can be applied appropriately. In FIG. 3, application positions P11 to P16 and P21 to P24 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P11~P16、P21~P24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 position 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 positions P11 to P16 and P21 to P24. 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.

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。 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の各工程について説明する。 Next, we will explain each step of the method for manufacturing an electric wire with terminal according to this embodiment.

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、例えば、圧着端子1を取り付けた電線Wが塗布を行う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。 Figure 6 shows a flowchart of the method for manufacturing an electric wire with terminal. The flowchart in Figure 6 is started, for example, when the electric wire W with the crimp terminal 1 attached is placed in a position for coating, and is executed by the control device 71.

まず、ステップST10に示すように、塗布工程が行われる。塗布工程は、圧着端子1を取り付けた電線Wに対し防食剤11を塗布する工程である。例えば、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のノズル731から防食剤11が吐出される。防食剤11は、電線接合部4に付着して塗布される。防食剤11の塗布は、図3に示すように、電線接合部4に設定された塗布位置P11~P16、P21~P24に対し行われる。このとき、例えば、各塗布位置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。また、予め設定された塗布順番に従って各塗布位置に対し塗布が行われる。例えば、塗布領域R1、塗布領域R2の順で塗布が行われ、塗布領域R1において塗布位置P11、P12、P13、P14、P15、P16の順に塗布が行われ、塗布領域R2において塗布位置P21、P22、P23、P24の順に塗布が行われる。これにより、塗布領域R1、R2において、低い位置から高い位置に向けて防食剤11が塗布されることとなる。つまり、塗布領域R1では、電線Wの延在方向に対し分けられた複数の列に対し、下側の第一列の塗布位置P11、その上の第二列の塗布位置P12、P13、その上の第三列の塗布位置P14、P15、P16の順に塗布が行われる。これにより、塗布領域R1において未塗布領域が発生せず塗布領域R1から防食剤11が流れ出ないように、防食剤11を適切に塗布することができる。 First, as shown in step ST10, a coating process is performed. The coating process is a process of coating the electric wire W to which the crimp terminal 1 is attached with the corrosion inhibitor 11. For example, a control signal is output from the coating control unit 712 to the coating device 73, and the corrosion inhibitor 11 is discharged from the nozzle 731 of the coating device 73. The corrosion inhibitor 11 adheres to the electric wire joint 4 and is applied. The coating of the corrosion inhibitor 11 is performed at coating positions P11 to P16 and P21 to P24 set at the electric wire joint 4, as shown in FIG. 3. At this time, for example, one drop of the corrosion inhibitor 11 is discharged at each coating position, and the corrosion inhibitor 11 is applied. Furthermore, coating is performed at each coating position according to a predetermined coating order. For example, coating is performed in the order of coating area R1 and coating area R2, coating is performed in the order of coating positions P11, P12, P13, P14, P15, and P16 in coating area R1, and coating is performed in the order of coating positions P21, P22, P23, and P24 in coating area R2. As a result, the anticorrosive agent 11 is applied from a low position to a high position in coating areas R1 and R2. That is, in coating area R1, coating is performed in the order of coating position P11 in the first row on the lower side, coating positions P12 and P13 in the second row above that, and coating positions P14, P15, and P16 in the third row above that, for multiple rows divided in the extension direction of the electric wire W. As a result, the anticorrosive agent 11 can be appropriately applied so that no uncoated area occurs in coating area R1 and the anticorrosive agent 11 does not flow out of coating area R1.

例えば、図7に示すように、塗布領域R1において塗布位置P11、P12、P13に防食剤11が塗布される場合、まず低い位置の第一列の塗布位置P11に防食剤11が塗布される。このとき、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。このため、塗布位置P11に塗布された防食剤11は、塗布位置P11と比べて高い位置にある塗布位置P12、P13側へ濡れ広がりにくい。従って、その後に塗布位置P12、P13に塗布された防食剤11は、塗布位置P11で塗布された防食剤11の影響を受けにくく、所望の位置及び範囲に塗布されていく。 For example, as shown in FIG. 7, when the anticorrosive agent 11 is applied to application positions P11, P12, and P13 in the application region R1, the anticorrosive agent 11 is first applied to application position P11 in the first row, which is at a lower position. At this time, 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. Therefore, the anticorrosive agent 11 applied to application position P11 is less likely to wet and spread to application positions P12 and P13, which are higher than application position P11. Therefore, the anticorrosive agent 11 applied to application positions P12 and P13 thereafter is less likely to be affected by the anticorrosive agent 11 applied at application position P11, and is applied to the desired position and range.

仮に、高い位置から先に防食剤11が塗布される場合、つまり上側の第二列の塗布位置P12、P13、下側の第一列の塗布位置P11の順番で塗布が行われる場合、本来塗布されるべき箇所に防食剤11が到達せず、未塗布の領域を生ずるおそれがある。すなわち、塗布位置P12、P13に塗布された防食剤11は塗布位置P11へ濡れ広がり、塗布位置P11に塗布された防食剤11は、塗布位置P12、P13に塗布された防食剤11とすぐに接触し、塗布位置P12及び塗布位置P13側へ引っ張られることとなる。これにより、所望の位置及び範囲に防食剤11が塗布されない。このような不具合を回避すべく、本実施形態に係る電線製造方法は、電線接合部4において低い位置を先に防食剤11を塗布することにより、防食剤11を適切に塗布することができるのである。 If the corrosion inhibitor 11 is applied from the higher position first, that is, if the application is performed in the order of application positions P12 and P13 in the second row on the upper side and application position P11 in the first row on the lower side, the corrosion inhibitor 11 may not reach the area where it should be applied, resulting in an unapplied area. That is, the corrosion inhibitor 11 applied to application positions P12 and P13 spreads wet to application position P11, and the corrosion inhibitor 11 applied to application position P11 immediately comes into contact with the corrosion inhibitor 11 applied to application positions P12 and P13, and is pulled toward application positions P12 and P13. As a result, the corrosion inhibitor 11 is not applied to the desired position and range. In order to avoid such a problem, the electric wire manufacturing method according to this embodiment applies the corrosion inhibitor 11 to the lower position in the electric wire joint 4 first, thereby allowing the corrosion inhibitor 11 to be applied appropriately.

そして、図6のステップST12に処理が移行し、硬化工程が行われる。硬化工程は、電線接合部4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、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が作動し、図5に示すように光源741から紫外線が射出される。電線接合部4に塗布された防食剤11は、紫外線を照射されることにより硬化し、封止部10となる。ステップST12の硬化工程を終えたら、図6の一連の制御処理を終了する。 Then, the process proceeds to step ST12 in FIG. 6, where the curing process is performed. The curing process is a process in which the anticorrosive agent 11 applied to the electric wire joint portion 4 is cured to form the sealing portion 10. For example, a control signal is output from the curing control unit 713 to the curing device 74, which operates the curing device 74 and emits ultraviolet light from the light source 741 as shown in FIG. 5. The anticorrosive agent 11 applied to the electric wire joint portion 4 is cured by being irradiated with ultraviolet light, and becomes the sealing portion 10. After the curing process of step ST12 is completed, the series of control processes in FIG. 6 ends.

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、位置の異なる複数の塗布位置P11~P16に対し防食剤11を吐出させて導体露出部47への塗布を行い、導体露出部47において電線Wの延在方向に対し複数の列に分けて塗布位置P11~P16を設定し、鉛直方向下側の列から鉛直方向上側の列へと順に塗布を行っていく。このため、本実施形態に係る電線製造方法は、防食剤11を所望の位置に塗布することができ、適切な防食剤11の塗布により封止部10を形成することができる。従って、本実施形態に係る電線製造方法は、端子付き電線100において適正に防食性能を得ることができる。 As described above, according to the electric wire with terminal manufacturing method of this embodiment, the anticorrosive agent 11 is discharged to a plurality of different application positions P11 to P16 to apply the anticorrosive agent to the conductor exposed portion 47, and the application positions P11 to P16 are set in a plurality of rows in the extension direction of the electric wire W in the conductor exposed portion 47, and application is performed in order from the row at the lower vertical position to the row at the upper vertical position. Therefore, the electric wire manufacturing method of this embodiment can apply the anticorrosive agent 11 to the desired position, and the sealing portion 10 can be formed by applying the appropriate anticorrosive agent 11. Therefore, the electric wire manufacturing method of this embodiment can obtain appropriate anticorrosive performance 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、電線接合部4において低い位置から高い位置に向けて防食剤11をとすることにより、塗布領域に対し未塗布箇所の発生を抑制しつつ、不必要に防食剤11を塗布するというような対応が不要となる。このため、本実施形態に係る電線製造方法は、端子付き電線100の製造コストの低減を図ることができる。 In addition, the method for manufacturing an electric wire with terminal according to this embodiment applies the anticorrosive agent 11 from a low position to a high position at the electric wire joint 4, thereby preventing the occurrence of uncoated areas in the coated area and eliminating the need to apply the anticorrosive agent 11 unnecessarily. Therefore, the method for manufacturing an electric wire according to this embodiment can reduce the manufacturing cost of 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、電線Wの延在方向に向けて傾斜している導体露出部47に防食剤11の塗布を行う。このとき、塗布位置P11~P16が設定される列に対し、下側の列から上側の列へと順に塗布を行っていく。このため、本実施形態に係る電線製造方法は、防食剤11を所望の位置に塗布することができ、適切な防食剤11の塗布により封止部10を形成することができる。従って、本実施形態に係る電線製造方法は、端子付き電線100において適正に防食性能を得ることができる。 The electric wire with terminal manufacturing method according to this embodiment also applies the anticorrosive agent 11 to the conductor exposed portion 47 that is inclined toward the extension direction of the electric wire W. At this time, the application is performed in order from the lower row to the upper row for the rows in which the application positions P11 to P16 are set. Therefore, the electric wire manufacturing method according to this embodiment can apply the anticorrosive agent 11 to the desired position, and the sealing portion 10 can be formed by applying the appropriate anticorrosive agent 11. Therefore, the electric wire manufacturing method according to this embodiment can obtain appropriate anticorrosive performance 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、鉛直方向下側の列に対し鉛直方向上側の列に多く塗布位置P11~P16を設定して、防食剤11の塗布を行う。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R1の全体を網羅して防食剤11を塗布することができ、塗布領域R1から防食剤11が流れ出ることを抑制することができる。 In addition, in the method for manufacturing an electric wire with terminal according to this embodiment, the anticorrosive agent 11 is applied by setting more application positions P11 to P16 in the vertically upper row than in the vertically lower row. Therefore, in the method for manufacturing an electric wire with terminal according to this embodiment, the anticorrosive agent 11 can be applied to the entire application area R1, and the anticorrosive agent 11 can be prevented from flowing out of the application area R1.

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、導体露出部47において下側の列に対し上側の列に防食剤11の塗布位置が多く設定される場合について説明したが、端子の形状、構造などに応じて、下側の列と上側の列で塗布位置が同数設定され、又は下側の列に対し上側の列に塗布位置が少なく設定されてもよい。例えば、図8に示すように、導体露出部47に設定される塗布領域R1において、塗布位置Pの列が上下四列とされ、下側の列(図8では、上にある列)から上側の列に向けて、列ごとの塗布位置Pの数が二つ、三つ、二つ、三つと設定されてもよい。この場合、異なる列で塗布位置が同数とされてもよく、下側の列に対し上側の列に塗布位置が少なく設定される。また、図9に示すように、導体露出部47に設定される塗布領域R1において、塗布位置Pの列が上下四列とされ、下側の列(図9では、上にある列)から上側の列に向けて、列ごとの塗布位置Pの数が五つ、五つ、四つ、五つと設定されてもよい。また、図10に示すように、導体露出部47に設定される塗布領域R1において、塗布位置Pの列が上下四列とされ、下側の列(図10では、上にある列)から上側の列に向けて、列ごとの塗布位置Pの数が一つ、二つ、六つ、七つと設定されてもよい。また、図11に示すように、導体露出部47に設定される塗布領域R1において、塗布位置Pの列が上下五列とされ、下側の列(図11では、上にある列)から上側の列に向けて、列ごとの塗布位置Pの数が一つ、三つ、四つ、四つ、五つと設定されてもよい。さらに、図12に示すように、導体露出部47に設定される塗布領域R1において、塗布位置Pの列が上下六列とされ、下側の列(図12では、上にある列)から上側の列に向けて、列ごとの塗布位置Pの数が一つ、三つ、四つ、五つ、六つ、七つと設定されてもよい。このような端子付き電線製造方法であっても、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。すなわち、防食剤11を所望の位置に塗布することができ、端子付き電線100において適正に防食性能を得ることができる。 For example, in the above-described embodiment of the manufacturing method of the electric wire with terminal, the case where more application positions of the anticorrosive agent 11 are set in the upper row than in the lower row in the conductor exposed portion 47 has been described, but the same number of application positions may be set in the lower row and the upper row, or fewer application positions may be set in the upper row than in the lower row, depending on the shape and structure of the terminal. For example, as shown in FIG. 8, in the application region R1 set in the conductor exposed portion 47, the rows of application positions P may be four rows from top to bottom, and the number of application positions P per row may be set to two, three, two, and three from the lower row (the upper row in FIG. 8) to the upper row. In this case, the same number of application positions may be set in different rows, and fewer application positions are set in the upper row than in the lower row. Also, as shown in FIG. 9, in the application region R1 set in the conductor exposed portion 47, the rows of application positions P may be four rows from top to bottom, and the number of application positions P per row may be set to five, five, four, and five from the lower row (the upper row in FIG. 9) to the upper row. Also, as shown in FIG. 10, in the coating region R1 set in the conductor exposed portion 47, the rows of the coating positions P may be four rows, one on top, and the number of the coating positions P per row may be set to one, two, six, or seven from the lower row (the upper row in FIG. 10) to the upper row. Also, as shown in FIG. 11, in the coating region R1 set in the conductor exposed portion 47, the rows of the coating positions P may be five rows, one on top, and the number of the coating positions P per row may be set to one, three, four, four, or five from the lower row (the upper row in FIG. 11) to the upper row. Furthermore, as shown in FIG. 12, in the coating region R1 set in the conductor exposed portion 47, the rows of the coating positions P may be six rows, one on top, and the number of the coating positions P per row may be set to one, three, four, five, six, or seven from the lower row (the upper row in FIG. 12) to the upper row. Even with such a method for manufacturing an electric wire with a terminal, the same action and effect as the method for manufacturing an electric wire with a terminal according to the above-mentioned embodiment can be obtained. In other words, the anticorrosive agent 11 can be applied to the desired position, and the terminal-attached electric wire 100 can achieve proper anticorrosive performance.

また、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。 In addition, in the method for manufacturing an electric wire with terminal according to the embodiment described above, the anticorrosive agent application area is set based on image data from the sensor unit 72, and the application position and application order are set for the application area. However, 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
P 塗布位置
P11~16 塗布位置
P21~24 塗布位置
R1 塗布領域
R2 塗布領域
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 Coating crimping portion 100 Terminal-attached electric wire P Coating positions P11-16 Coating positions P21-24 Coating position R1 Coating area R2 Coating area W Electric wire W1 Conductor portion W2 Insulating coating portion

Claims (3)

電線の絶縁被覆部に圧着される被覆圧着部、前記絶縁被覆部の端部から露出する導体部に圧着される導体圧着部、及び、前記被覆圧着部と前記導体圧着部の間に形成される導体露出部を有する圧着端子を取り付けた前記電線において、前記導体露出部に対し液状の防食剤を塗布する塗布工程と、
前記導体露出部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、前記導体露出部に設定される複数の塗布位置に対し前記防食剤を吐出させて塗布を行い、
前記複数の塗布位置は、前記導体露出部において前記電線の延在方向に対し複数の列に分けて設定され、前記塗布工程において鉛直方向下側の列から鉛直方向上側の列への順に塗布される、
端子付き電線製造方法。
a coating process for coating a liquid anticorrosive agent on the conductor exposed portion of the electric wire to which a crimp terminal is attached, the crimp terminal having a coating crimp portion that is crimped to an insulating coating portion of the electric wire, a conductor crimp portion that is crimped to a conductor portion exposed from an end of the insulating coating portion, and a conductor exposed portion formed between the coating crimp portion and the conductor crimp portion;
and a hardening step of hardening the anticorrosive agent applied to the conductor exposed portion,
The coating step includes discharging the anticorrosive agent to a plurality of coating positions set on the exposed conductor portion to coat the anticorrosive agent,
The plurality of application positions are set in the conductor exposed portion in a plurality of rows in an extending direction of the electric wire, and application is performed in the application step in order from a lower row in a vertical direction to an upper row in a vertical direction.
Manufacturing method for electric wire with terminal.
前記導体露出部は、前記延在方向に向けて傾斜している、
請求項1に記載の端子付き電線製造方法。
The conductor exposed portion is inclined toward the extending direction.
The method for producing an electric wire with a terminal according to claim 1 .
前記塗布位置は、前記鉛直方向下側の列に対し前記鉛直方向上側の列に多く設定されている、
請求項1又は2に記載の端子付き電線製造方法。
The application positions are set more in the vertically upper row than in the vertically lower row,
The method for producing an electric wire with a terminal according to claim 1 or 2.
JP2022193936A 2022-12-05 2022-12-05 Manufacturing method for electric wire with terminal Pending JP2024080748A (en)

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