JP6263500B2 - Terminal with wire and wire harness - Google Patents

Terminal with wire and wire harness Download PDF

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Publication number
JP6263500B2
JP6263500B2 JP2015118954A JP2015118954A JP6263500B2 JP 6263500 B2 JP6263500 B2 JP 6263500B2 JP 2015118954 A JP2015118954 A JP 2015118954A JP 2015118954 A JP2015118954 A JP 2015118954A JP 6263500 B2 JP6263500 B2 JP 6263500B2
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terminal
electric wire
conductor
caulking
anticorrosion
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JP2017004822A (en
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大亮 宮川
大亮 宮川
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Yazaki Corp
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Yazaki Corp
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048Crimping apparatus or processes
    • H01R43/0482Crimping apparatus or processes combined with contact member manufacturing mechanism
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048Crimping apparatus or processes
    • H01R43/05Crimping apparatus or processes with wire-insulation stripping
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections

Description

本発明は、電線及び端子金具における異種金属同士の接続部分に防食部を形成してなる電線付き端子と、この電線付き端子を含むワイヤハーネスとに関する。   The present invention relates to a terminal with an electric wire formed by forming a corrosion-proof portion at a connecting portion between different metals in an electric wire and a terminal fitting, and a wire harness including the terminal with an electric wire.

例えば、自動車に搭載される機器間を電気的に接続するために、車両にはワイヤハーネスが配索される。ワイヤハーネスは、電線束と、この電線束の端末に配設される各種のコネクタとを備えて構成される。ワイヤハーネスのコネクタは、絶縁性のコネクタハウジングと、このコネクタハウジングの端子収容室に収容される複数の導電性の端子金具とを備えて構成される。端子金具は、電線束を構成する電線の端末に配設される。電線は、一般的に銅電線(導体が銅製又は銅合金製の撚り線になるもの)が用いられ、そして、この銅電線の端末を皮剥した後に端子金具が圧着により接続される。尚、端子金具は、母材が銅電線の導体と同じ銅製又は銅合金製であり、メッキが施されることもある。   For example, a wire harness is routed in a vehicle in order to electrically connect devices mounted on an automobile. The wire harness includes an electric wire bundle and various connectors arranged at the end of the electric wire bundle. The connector of the wire harness includes an insulating connector housing and a plurality of conductive terminal fittings housed in the terminal housing chamber of the connector housing. A terminal metal fitting is arrange | positioned at the terminal of the electric wire which comprises an electric wire bundle. As the electric wire, a copper electric wire (in which the conductor becomes a stranded wire made of copper or a copper alloy) is generally used, and the terminal fitting is connected by crimping after the end of the copper electric wire is peeled off. Note that the terminal fitting is made of the same copper or copper alloy as the base metal of the conductor of the copper electric wire, and may be plated.

近年、銅資源の不足に加え、車両の軽量化、材料のリサイクルの容易性を考慮して、銅電線に替えてアルミ電線が用いられることもある(アルミ電線とは、本明細書において、導体がアルミニウム製又はアルミニウム合金製のものを称する)。しかしながら、アルミ電線は、銅電線を構成する導体の材料である銅に比べて表面に形成される酸化被膜が厚く、アルミ電線においては、この導体と端子金具(圧着端子)との間の接触抵抗が比較的高くなる傾向にあることが知られる。そこで、アルミ電線の導体と圧着端子との間の接触抵抗を低減するために、圧着端子に形成される一対の導体加締め片にて導体を強く加締めて圧縮率を高くする方法が採用される。この方法によれば、アルミ電線の導体を強く加締めることにより、導体を構成する各素線の酸化被膜を破壊することができる。すなわち、導体と圧着端子との間の接触抵抗を低減することができる。   In recent years, in addition to the shortage of copper resources, aluminum wires are sometimes used instead of copper wires in consideration of lighter vehicles and ease of material recycling. Is made of aluminum or aluminum alloy). However, aluminum wires have a thicker oxide film formed on the surface than copper, which is a conductor material that constitutes copper wires, and in aluminum wires, the contact resistance between this conductor and the terminal fitting (crimp terminal) Is known to tend to be relatively high. Therefore, in order to reduce the contact resistance between the conductor of the aluminum wire and the crimp terminal, a method is adopted in which the conductor is strongly crimped with a pair of conductor crimping pieces formed on the crimp terminal to increase the compression ratio. The According to this method, the oxide film of each strand constituting the conductor can be broken by strongly caulking the conductor of the aluminum electric wire. That is, the contact resistance between the conductor and the crimp terminal can be reduced.

ところで、アルミニウム材と銅材との接触部分、別な言い方をすれば異種金属同士の接触部分は、この接触部分に水分が介在すると、アルミニウム及び銅の両金属が水中にイオンとして溶け込んで両者の間に電位差などが生じて電食が起こることが知られる。尚、アルミ電線の導体と、銅製又は銅合金製の圧着端子とを電気的、機械的に接続すると、圧着端子の導体加締め片による導体の圧着部分では、高圧縮になる圧着であることから浸水が防止され、結果、電食の発生が回避される。けれども、導体加締め片による導体の圧着部分に対し端子軸方向(電線延在方向)の位置では、導体が一部露出した状態にあることから、ここに水分が付着して上記圧着部分にまで達してしまうと、圧着部分が恰も電解溶液に浸漬された状態になって、イオン化傾向が大きい金属であるアルミニウムが溶解して電食が進んでしまうという虞がある。そこで、導体の露出部分に対する水分の付着や、圧着部分に対する浸水を防止するため、従来においては図10に示すような防食部115(封止部)が形成される(例えば、下記特許文献1参照)。   By the way, the contact portion between the aluminum material and the copper material, in other words, the contact portion between different metals, when moisture intervenes in this contact portion, both the aluminum and copper metals dissolve in the water as ions, and both It is known that electric corrosion occurs due to potential difference between them. In addition, if the conductor of the aluminum electric wire and the crimp terminal made of copper or copper alloy are electrically and mechanically connected, the crimping portion of the conductor by the crimped piece of the crimp terminal is a highly compressive crimp. Inundation is prevented, and as a result, the occurrence of electrolytic corrosion is avoided. However, since the conductor is partially exposed at the position in the terminal axis direction (wire extending direction) with respect to the conductor crimping portion by the conductor crimping piece, moisture adheres to the crimping portion. If it reaches, there is a possibility that the crimped portion is immersed in the electrolytic solution, and aluminum, which is a metal having a large ionization tendency, dissolves and galvanic corrosion proceeds. Therefore, in order to prevent moisture from adhering to the exposed portion of the conductor and water from entering into the crimped portion, conventionally, an anticorrosion portion 115 (sealing portion) as shown in FIG. 10 is formed (for example, see Patent Document 1 below). ).

図10において、引用符号101はアルミ電線、引用符号102は圧着端子を示す。アルミ電線101は、アルミニウム製又はアルミニウム合金製の導体103と、この導体103を覆う絶縁性の樹脂被覆104とを備えて構成される。アルミ電線101は、樹脂被覆104の端部を除去して導体露出部105が形成される。一方、圧着端子102は、雌形の端子金具であって、銅製又は銅合金製の金属板をプレス加工することにより、図示形状に形成される。圧着端子102は、矩形筒状の電気接触部106と、加締め部107と、これら電気接触部106及び加締め部107を連結する連結部108とを有する。加締め部107には、導体露出部105を載置するための載置部109と、この載置部109に載置された導体露出部105を加締めるための導体加締め片110と、導体露出部105の近傍の樹脂被覆104を加締めるための被覆加締め片111とが形成される。   In FIG. 10, reference numeral 101 indicates an aluminum electric wire, and reference numeral 102 indicates a crimp terminal. The aluminum electric wire 101 includes a conductor 103 made of aluminum or an aluminum alloy and an insulating resin coating 104 that covers the conductor 103. In the aluminum electric wire 101, the conductor exposed portion 105 is formed by removing the end portion of the resin coating 104. On the other hand, the crimp terminal 102 is a female terminal fitting, and is formed into a shape shown in the figure by pressing a metal plate made of copper or copper alloy. The crimp terminal 102 includes a rectangular cylindrical electrical contact portion 106, a crimped portion 107, and a connecting portion 108 that couples the electrical contact portion 106 and the crimped portion 107. The caulking portion 107 includes a placement portion 109 for placing the conductor exposed portion 105, a conductor caulking piece 110 for caulking the conductor exposed portion 105 placed on the placement portion 109, and a conductor A coating caulking piece 111 for caulking the resin coating 104 in the vicinity of the exposed portion 105 is formed.

上記構成及び構造において、導体露出部105を導体加締め片110にて加締めてなる導体加締め部分112と、導体露出部105の近傍の樹脂被覆104を被覆加締め片111にて加締めてなる被覆加締め部分113とを含んで電線・端子接続部118が形成される。尚、導体加締め部分112においては、導体露出部105の長さと導体加締め片110の幅との関係から、非加締め部分114が生じてしまう。そこで、この非加締め部分114を覆うような状態で、電線・端子接続部118には防食部115(封止部)が形成される。防食部115は、二つのディスペンサーの各ノズル116から防食材117(封止材)をそれぞれ滴下し、そして、この滴下にて塗布された防食材117を硬化させることにより形成される。尚、防食材117としては、シリコーンゴムが採用される。   In the above configuration and structure, the conductor caulking portion 112 obtained by caulking the conductor exposed portion 105 with the conductor caulking piece 110 and the resin coating 104 in the vicinity of the conductor exposed portion 105 are caulked with the covering caulking piece 111. An electric wire / terminal connection portion 118 is formed including the covering caulking portion 113. In the conductor caulking portion 112, the non-caulking portion 114 is generated due to the relationship between the length of the conductor exposed portion 105 and the width of the conductor caulking piece 110. Therefore, the anticorrosion part 115 (sealing part) is formed in the electric wire / terminal connection part 118 so as to cover the non-caulking part 114. The anticorrosion part 115 is formed by dropping the anticorrosion material 117 (sealing material) from the nozzles 116 of the two dispensers, and then curing the anticorrosion material 117 applied by this dripping. As the anticorrosion material 117, silicone rubber is employed.

特開2011−113708号公報JP 2011-113708 A

上記従来技術にあっては、電線・端子接続部118が形成されると、導体加締め部分112及び被覆加締め部分113の間の非加締め部分114は図11(a)に示すような形状に形成される。すなわち、樹脂被覆104から引き出された後に導体加締め片110により加締められるまでの間が外側に凸となる湾曲形状に非加締め部分114は形成される。このような形状の非加締め部分114に関しては、次のような問題点を有する。具体的には、導体103を構成する複数本の素線103aのうち、例えば一本の素線103a′が図11(b)に示すような状態に飛び出した場合、この後に防食材117(図10参照)が滴下されても素線103a′には塗布されず、素線103a′が露出したままの状態で防食部115(封止部。図10参照)が形成されてしまうという問題点を有する。防食部115が形成されても素線103a′が露出したままの状態では、防食性が悪くなってしまうのは勿論である。   In the above prior art, when the electric wire / terminal connecting portion 118 is formed, the non-crimped portion 114 between the conductor crimped portion 112 and the covering crimped portion 113 has a shape as shown in FIG. Formed. That is, the non-caulking portion 114 is formed in a curved shape that protrudes outwardly after being pulled out from the resin coating 104 until being caulked by the conductor caulking piece 110. The non-caulking portion 114 having such a shape has the following problems. Specifically, for example, when one strand 103a ′ of the plurality of strands 103a constituting the conductor 103 protrudes into a state as shown in FIG. 11B, the anticorrosion material 117 (FIG. 10) is not applied to the strand 103a ', and the corrosion prevention portion 115 (sealed portion; see FIG. 10) is formed with the strand 103a' exposed. Have. Needless to say, the anticorrosion property is deteriorated when the wire 103a 'remains exposed even if the anticorrosion portion 115 is formed.

また、素線103a′が図11(b)に示すような状態に飛び出した場合、次のような問題点を有する。具体的には、防食材117(図10参照)が仮に素線103a′に付着したとしても、素線103a′は飛び出した状態の部分であることから、この後に形成される防食部115(図10参照)は大型化してしまうという問題点を有する。防食部115が大型化すれば、コネクタハウジングへの端子挿入が困難になってしまうのは勿論である。   Further, when the strand 103a 'jumps out to a state as shown in FIG. 11B, there are the following problems. Specifically, even if the anticorrosion material 117 (see FIG. 10) adheres to the element wire 103a ′, the element wire 103a ′ is a protruding portion, so that the anticorrosion part 115 (see FIG. 10) has a problem that the size is increased. Of course, if the anticorrosion portion 115 is enlarged, it is difficult to insert terminals into the connector housing.

この他、上記従来技術にあっては、図10に示す如く、二つのディスペンサーの各ノズル116から防食材117をそれぞれ滴下し、そして、この滴下にて塗布された防食材117が表面張力を有することから、電線・端子接続部118における、非加締め部分114に対してなじまず、この後に液だれが起こると、防食部115が十分な状態で形成されないという問題点を有する。   In addition, in the prior art, as shown in FIG. 10, the anticorrosion material 117 is dropped from the nozzles 116 of the two dispensers, and the anticorrosion material 117 applied by this dropping has surface tension. For this reason, there is a problem in that the anticorrosion portion 115 is not formed in a sufficient state when the dripping occurs after this without first adapting to the non-caulking portion 114 in the electric wire / terminal connection portion 118.

本発明は、上記した事情に鑑みてなされたもので、封止性(防食性や防水性)を十分に確保することが可能な、また、封止部の大型化を防止することが可能な、電線付き端子及びワイヤハーネスを提供することを課題とする。   The present invention has been made in view of the above circumstances, and can sufficiently ensure sealing performance (corrosion resistance and waterproofness), and can prevent an increase in the size of the sealing portion. It is an object to provide a terminal with an electric wire and a wire harness.

上記課題を解決するためになされた請求項1に記載の本発明の電線付き端子は、電線の樹脂被覆を除去して形成される導体露出部の位置に端子金具を接続して電線・端子接続部を形成し、さらには、該電線・端子接続部を覆う封止部を形成してなる電線付き端子において、前記電線・端子接続部は、前記導体露出部を前記端子金具の導体加締め片にて加締めてなる導体加締め部分と、該導体加締め部分周辺の非加締め部分と、前記導体露出部近傍の前記樹脂被覆を前記端子金具の被覆加締め片にて加締めてなる被覆加締め部分とを含み、且つ、前記非加締め部分は、該非加締め部分を断面で見て斜めで平らに形成された押圧加工部分を有し、前記端子金具は、前記導体加締め片と前記被覆加締め片との間の側壁先端に形成された外向きのテーパを有することを特徴とする。
In order to solve the above-mentioned problem, the terminal with electric wire according to claim 1 of the present invention is formed by connecting a terminal fitting to a conductor exposed portion formed by removing the resin coating of the electric wire. Forming a sealing part that further covers the electric wire / terminal connection part, wherein the electric wire / terminal connection part is a conductor crimping piece of the terminal fitting. A conductor caulking part that is caulked with, a non-caulking part around the conductor caulking part, and a coating obtained by caulking the resin coating in the vicinity of the conductor exposed part with a covering caulking piece of the terminal fitting and a caulking portion, and the non-crimp portion have a flat-formed pressed working portion obliquely seeing the non crimping portion in cross-section, wherein the terminal fitting, said conductor crimping pieces An outward tape formed at the end of the side wall between the coated crimping pieces. Characterized in that it have a.

このような特徴を有する本発明によれば、非加締め部分に対し押圧加工部分を有する電線・端子接続部になることから、非加締め部分の一部が飛び出したような形状にはならず、結果、非加締め部分が露出しない状態で封止部が形成される。また、封止部が大型化しない状態にも形成される。   According to the present invention having such a feature, since it becomes an electric wire / terminal connection part having a pressing part with respect to the non-clamping part, it does not have a shape in which a part of the non-clamping part protrudes. As a result, the sealing portion is formed in a state where the non-caulked portion is not exposed. Moreover, it forms also in the state which does not enlarge a sealing part.

また、本発明によれば、封止材の供給位置が非加締め部分の上方である時に、例えばこの供給位置の反対側まで封止材をスムーズに回り込ませるようにする必要がある場合には、側壁先端に形成された外向きのテーパが有効になる。外向きのテーパが形成されると、封止材が側壁先端を越え易くなることから、封止材が一箇所に過剰に溜まってしまうことがなく、結果、封止部の大型化が防止される。この他、外向きのテーパの形成は、電線との適正な延面距離を稼ぐ際に有効である。
Further , according to the present invention, when the supply position of the sealing material is above the non-caulking portion, for example, when it is necessary to smoothly feed the sealing material to the opposite side of the supply position The outward taper formed at the end of the side wall is effective. When the outward taper is formed, the sealing material easily crosses the end of the side wall, so that the sealing material does not accumulate excessively in one place, and as a result, an increase in the size of the sealing portion is prevented. The In addition, the formation of the outward taper is effective in obtaining an appropriate surface area with the electric wire.

また、上記課題を解決するためになされた請求項に記載の本発明のワイヤハーネスは、請求項に記載の電線付き端子と、該電線付き端子の端子金具を収容するコネクタハウジングとを含んでコネクタを構成し、該コネクタを端末に配設してなることを特徴とする。
Moreover, the wire harness of this invention of Claim 2 made | formed in order to solve the said subject contains the terminal with an electric wire of Claim 1 , and the connector housing which accommodates the terminal metal fitting of this terminal with an electric wire. And a connector is provided, and the connector is disposed on the terminal.

このような特徴を有する本発明によれば、請求項1に記載の電線付き端子を含むワイヤハーネスが形成される。電線付き端子は、封止部が大型化しないことから、コネクタハウジングへの端子挿入は容易である。
According to this invention which has such a characteristic, the wire harness containing the terminal with an electric wire of Claim 1 is formed. The terminal with the electric wire is easy to insert into the connector housing because the sealing portion does not increase in size.

尚、上記請求項1に記載の本発明は、電線をアルミ電線、端子金具をアルミ電線に対し異種金属となるもの、封止材を防食材、封止部を防食部、として対象を限定すれば、次のような特徴になる。すなわち、「アルミニウム製又はアルミニウム合金製の導体と、該導体を覆う絶縁性の樹脂被覆とを備える電線の、前記樹脂被覆を除去して形成される導体露出部の位置に、母材が銅製又は銅合金製の端子金具を接続して電線・端子接続部を形成し、さらには、該電線・端子接続部を覆う防食部を形成してなる電線付き端子において、前記電線・端子接続部は、前記導体露出部を前記端子金具の導体加締め片にて加締めてなる導体加締め部分と、該導体加締め部分周辺の非加締め部分と、前記導体露出部近傍の前記樹脂被覆を前記端子金具の被覆加締め片にて加締めてなる被覆加締め部分とを含み、且つ、前記非加締め部分は、該非加締め部分を断面で見て斜めで平らに形成された押圧加工部分を有し、前記端子金具は、前記導体加締め片と前記被覆加締め片との間の側壁先端に形成された外向きのテーパを有することを特徴とする電線付き端子。」になる。
In addition, the present invention described in claim 1 is limited in that the electric wire is an aluminum electric wire, the terminal fitting is a different metal with respect to the aluminum electric wire, the sealing material is an anticorrosion material, and the sealing portion is an anticorrosion portion. For example, the characteristics are as follows. That is, “a base material is made of copper at a position of a conductor exposed portion formed by removing the resin coating of an electric wire including a conductor made of aluminum or an aluminum alloy and an insulating resin coating covering the conductor; A copper alloy terminal fitting is connected to form an electric wire / terminal connection portion, and further, in a terminal with an electric wire formed by forming an anticorrosion portion covering the electric wire / terminal connection portion, the electric wire / terminal connection portion is: Conductor caulking portion obtained by caulking the conductor exposed portion with a conductor caulking piece of the terminal fitting, an unclamped portion around the conductor caulking portion, and the resin coating near the conductor exposed portion as the terminal And a non-caulking portion having a pressing portion formed flat and obliquely when the non-caulking portion is viewed in cross section. And the terminal fitting and the conductor crimping piece Serial terminals with electric wires, characterized in that have a taper outwardly formed in the side wall front end between the coating crimping pieces. Becomes ".

また、上記請求項1に記載の本発明は、封止材を防水材、封止部を防水部、として対象を限定すれば、次のような特徴になる。すなわち、「電線の樹脂被覆を除去して形成される導体露出部の位置に端子金具を接続して電線・端子接続部を形成し、さらには、該電線・端子接続部を覆う防水部を形成してなる電線付き端子において、前記電線・端子接続部は、前記導体露出部を前記端子金具の導体加締め片にて加締めてなる導体加締め部分と、該導体加締め部分周辺の非加締め部分と、前記導体露出部近傍の前記樹脂被覆を前記端子金具の被覆加締め片にて加締めてなる被覆加締め部分とを含み、且つ、前記非加締め部分は、該非加締め部分を断面で見て斜めで平らに形成された押圧加工部分を有し、前記端子金具は、前記導体加締め片と前記被覆加締め片との間の側壁先端に形成された外向きのテーパを有することを特徴とする電線付き端子。」になる。
Further, the present invention described in claim 1 has the following characteristics if the object is limited to a sealing material as a waterproof material and a sealing portion as a waterproof part. That is, “Connect the terminal fitting to the position of the conductor exposed part formed by removing the resin coating of the electric wire to form the electric wire / terminal connecting part, and further form the waterproof part covering the electric wire / terminal connecting part In the terminal with an electric wire, the electric wire / terminal connection portion includes a conductor crimped portion obtained by crimping the conductor exposed portion with a conductor crimping piece of the terminal fitting, and a non-clamping portion around the conductor crimped portion. A crimped portion and a coated crimped portion formed by crimping the resin coating near the exposed conductor portion with a coated crimped piece of the terminal fitting, and the non-swaged portion includes the non-swaged portion. have a flat formed pressed working portion obliquely viewed in cross-section, wherein the terminal fitting, have a taper outwardly formed in the side wall front end between the conductor clamping pieces and the cover clamping pieces It is a terminal with an electric wire characterized by. "

請求項1に記載された本発明によれば、封止性(防食性や防水性)を十分に確保することができるという効果や、封止部の大型化を防止することができるという効果を奏する。   According to the present invention described in claim 1, an effect that a sealing property (corrosion resistance and waterproofness) can be sufficiently ensured and an effect that an enlargement of a sealing portion can be prevented. Play.

また、本発明によれば、封止部の大型化防止に寄与することができるという効果を奏する。
Moreover, according to this invention, there exists an effect that it can contribute to the enlargement prevention of a sealing part.

請求項に記載された本発明によれば、請求項1に記載の電線付き端子を含むことから、封止性を十分に確保し、また、コネクタハウジングへの端子挿入を容易に行える、より良いワイヤハーネスを提供することができるという効果を奏する。 According to the second aspect of the present invention, since the electric wire-equipped terminal according to the first aspect is included, sufficient sealing performance can be secured, and the terminal can be easily inserted into the connector housing. There exists an effect that a good wire harness can be provided.

本発明の電線付き端子を示す斜視図である。It is a perspective view which shows the terminal with an electric wire of this invention. 図1のA−A線断面図である。It is the sectional view on the AA line of FIG. 防食部を形成する前の電線付き端子の斜視図である。It is a perspective view of the terminal with an electric wire before forming a corrosion prevention part. 図3のB−B線断面図である。FIG. 4 is a sectional view taken along line BB in FIG. 3. 製造方法を説明するための電線付き端子の斜視図である。It is a perspective view of a terminal with an electric wire for explaining a manufacturing method. 図5のA−A線断面図である。It is the sectional view on the AA line of FIG. 電線付き端子の製造方法に係る工程説明図である。It is process explanatory drawing which concerns on the manufacturing method of a terminal with an electric wire. 本発明のワイヤハーネスを構成するコネクタの斜視図である。It is a perspective view of the connector which comprises the wire harness of this invention. 図8のコネクタハウジングの図であり、(a)は斜視図、(b)はC−C線断面図である。It is a figure of the connector housing of FIG. 8, (a) is a perspective view, (b) is CC sectional view taken on the line. 従来例の電線付き端子の図であり、(a)は斜視図、(b)はD−D線断面図である。It is a figure of the terminal with an electric wire of a prior art example, (a) is a perspective view, (b) is DD sectional view taken on the line. 図10の電線・端子接続部の拡大断面図であり、(a)は非加締め部分に素線の飛び出しがない状態の図、(b)は非加締め部分に素線の飛び出しがある状態の図である。It is an expanded sectional view of the electric wire and terminal connection part of FIG. 10, (a) is a figure of the state which does not protrude a strand in a non-clamping part, (b) is a state where a strand protrudes in a non-caulking part FIG.

電線付き端子は、アルミ電線と、圧着端子とを備えて構成される。アルミ電線は、アルミニウム製又はアルミニウム合金製の導体と、この導体を覆う絶縁性の樹脂被覆とを備えて構成される。アルミ電線は、樹脂被覆を除去して導体露出部が形成される。圧着端子は、圧着部分としての加締め部を有し、この加締め部には、導体加締め片及び被覆加締め片が形成される。電線付き端子は、導体露出部に加締め部を圧着して電線・端子接続部が形成される。そして、この電線・端子接続部を覆うようにして防食部が形成される。防食部は、圧着端子と金属製ノズルとの間に電圧を印可し且つ金属製ノズルから電荷を帯びた防食材を電線・端子接続部に引き寄せるような状態で供給することにより形成される。また、防食部は、電線・端子接続部に供給された防食材に対し紫外線を照射しUV硬化させて形成される。   The terminal with electric wire is configured to include an aluminum electric wire and a crimp terminal. The aluminum electric wire includes a conductor made of aluminum or an aluminum alloy and an insulating resin coating that covers the conductor. The aluminum wire has a conductor exposed portion formed by removing the resin coating. The crimp terminal has a crimp portion as a crimp portion, and a conductor crimp piece and a covering crimp piece are formed in the crimp portion. In the terminal with electric wire, the electric wire / terminal connecting portion is formed by crimping the caulking portion to the conductor exposed portion. And an anticorrosion part is formed so that this electric wire and terminal connection part may be covered. The anticorrosion part is formed by applying a voltage between the crimp terminal and the metal nozzle and supplying an anticorrosion material charged with electric charges from the metal nozzle in a state of drawing to the electric wire / terminal connection part. The anticorrosion part is formed by irradiating the anticorrosion material supplied to the electric wire / terminal connection part with ultraviolet rays and curing it.

電線・端子接続部は、導体露出部を導体加締め片にて加締めてなる導体加締め部分と、この導体加締め部分周辺の非加締め部分と、導体露出部近傍の樹脂被覆を被覆加締め片にて加締めてなる被覆加締め部分とを含み、且つ、非加締め部分は押圧加工部分を有する。押圧加工部分は、押圧加工手段にて圧着端子の底板に向く方向の押圧力により加工・形成される。   The wire / terminal connection part is coated with a conductor crimped part formed by crimping the conductor exposed part with a conductor crimping piece, a non-crimped part around the conductor crimped part, and a resin coating near the conductor exposed part. And a cover crimping portion formed by crimping with a clamping piece, and the non-caulking portion has a pressing portion. The pressing portion is processed and formed by the pressing force in the direction toward the bottom plate of the crimp terminal by the pressing portion.

以下、図面を参照しながら実施例を説明する。図1は本発明の電線付き端子を示す斜視図である。また、図2は図1のA−A線断面図、図3は防食部を形成する前の電線付き端子の斜視図、図4は図3のB−B線断面図である。さらに、図5は製造方法を説明するための電線付き端子の斜視図、図6は図5のA−A線断面図、図7は電線付き端子の製造方法に係る工程説明図である。この他、図8は本発明のワイヤハーネスを構成するコネクタの斜視図、図9は図8のコネクタハウジングの図である。   Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a perspective view showing a terminal with electric wires of the present invention. 2 is a cross-sectional view taken along the line AA in FIG. 1, FIG. 3 is a perspective view of the terminal with electric wires before forming the anticorrosion portion, and FIG. 4 is a cross-sectional view taken along the line BB in FIG. 5 is a perspective view of the terminal with electric wires for explaining the manufacturing method, FIG. 6 is a cross-sectional view taken along the line AA of FIG. 5, and FIG. 8 is a perspective view of a connector constituting the wire harness of the present invention, and FIG. 9 is a view of the connector housing of FIG.

<電線付き端子1の構成について>
図1及び図2において、引用符号1は本発明の電線付き端子を示す。電線付き端子1は、アルミ電線2(電線)と、このアルミ電線2の端末に配設される圧着端子3(端子金具)とを備えて構成される。また、電線付き端子1は、アルミ電線2及び圧着端子3における異種金属同士の接続部分に防食部4(封止部、防水部)を有するように構成される。尚、本実施例の電線付き端子1は、アルミ電線2の端末に圧着端子3を配設してなるものであるが、例えばアルミ電線2の中間に適宜形状の端子金具を配設してもよいものとする。
<About the configuration of the terminal 1 with electric wire>
In FIG.1 and FIG.2, the reference number 1 shows the terminal with an electric wire of this invention. The terminal 1 with an electric wire includes an aluminum electric wire 2 (electric wire) and a crimp terminal 3 (terminal fitting) disposed at the end of the aluminum electric wire 2. Moreover, the terminal 1 with an electric wire is comprised so that it may have the anticorrosion part 4 (sealing part, waterproof part) in the connection part of the dissimilar metals in the aluminum electric wire 2 and the crimp terminal 3. FIG. In addition, although the terminal 1 with an electric wire of a present Example is arrange | positioned by arrange | positioning the crimp terminal 3 in the terminal of the aluminum electric wire 2, for example, even if it arrange | positions the terminal metal fitting of an appropriate shape in the middle of the aluminum electric wire 2 Be good.

<アルミ電線2の構成及び構造について>
図1ないし図4において、アルミ電線2は、断面円形状で且つ曲げの力を加えた時に元の状態に戻ろうとする反力が発生するような柔軟性を有するものが採用される。アルミ電線2は、導体5と、樹脂被覆6とを備えて構成される。
<About the structure and structure of the aluminum electric wire 2>
In FIG. 1 to FIG. 4, the aluminum electric wire 2 has a circular cross section and has a flexibility that generates a reaction force to return to the original state when a bending force is applied. The aluminum electric wire 2 includes a conductor 5 and a resin coating 6.

導体5は、断面円形状の複数本の素線(符号省略)を撚り合わせて形成される。この素線は、アルミニウム製又はアルミニウム合金製である。すなわち、導体5は、アルミニウム製又はアルミニウム合金製のものである。導体5は、所定の導体断面積を有する。そして、この導体断面積の部分がアルミ電線2の電線長の分だけ存在する。アルミニウム材は、比重が2.70g/cmであり、後述する銅材の比重が8.96g/cmであることから、アルミ電線2は軽量であって長尺な車載用電線として使用されれば燃費効率の向上等に有効である。 The conductor 5 is formed by twisting a plurality of strands (not shown) having a circular cross section. This strand is made of aluminum or aluminum alloy. That is, the conductor 5 is made of aluminum or aluminum alloy. The conductor 5 has a predetermined conductor cross-sectional area. A portion of this conductor cross-sectional area exists by the length of the aluminum wire 2. The aluminum material has a specific gravity of 2.70 g / cm 3 and the copper material described later has a specific gravity of 8.96 g / cm 3 , so the aluminum wire 2 is light and used as a long vehicle-mounted electric wire. This is effective for improving fuel efficiency.

尚、アルミニウム材は、電気化学反応における標準電極電位が−1.676Vであり、また、後述する銅材の標準電極電位は+0.340Vである。これらの電位差は大きなものであり、そのためアルミニウム材と銅材との間に水分が浸入して滞留してしまうと、アルミニウム、銅、及び電解質水溶液により電池が形成される。そして、この電池の陽極になる方、すなわち導体5の方に異種金属接触腐食(ガルバニック腐食、電食)が発生してしまうことになる。このようなことから、電食を防ぐための防食部4が必要になるのは勿論である。   The aluminum material has a standard electrode potential in an electrochemical reaction of −1.676 V, and the standard electrode potential of a copper material described later is +0.340 V. These potential differences are large. Therefore, if moisture enters and stays between the aluminum material and the copper material, a battery is formed by aluminum, copper, and an aqueous electrolyte solution. Then, different metal contact corrosion (galvanic corrosion, electrolytic corrosion) occurs on the battery anode, that is, on the conductor 5. From such a thing, of course, the anticorrosion part 4 for preventing electric corrosion is needed.

樹脂被覆6は、所謂絶縁体であって、絶縁性を有する樹脂材料を導体5の外側に押出成形することにより断面円形状に形成される。上記樹脂材料としては、公知の様々な種類のものが採用可能である。例えば、ポリ塩化ビニル樹脂やポリエチレン樹脂、ポリプロピレン樹脂などの高分子材料から適宜選択される。   The resin coating 6 is a so-called insulator, and is formed into a circular cross section by extruding an insulating resin material outside the conductor 5. Various types of known materials can be used as the resin material. For example, it is appropriately selected from polymer materials such as polyvinyl chloride resin, polyethylene resin, and polypropylene resin.

以上のようなアルミ電線2は、この端末において樹脂被覆6が所定長さ分だけ除去されて導体露出部7が形成される。   In the aluminum electric wire 2 as described above, the resin coating 6 is removed by a predetermined length at this end to form the conductor exposed portion 7.

<圧着端子3の構造について>
図1ないし図4において、圧着端子3は、雌形の端子金具であって、母材が銅製又は銅合金製の金属板をプレス加工することにより、例えば図示形状に形成される(雄形の端子金具であってもよいものとする)。尚、特に図示しないが、上記母材の表面にメッキが施されるものとする。メッキは、異種金属接触部分になる銅材とアルミニウム材との間に介在することになる。圧着端子3は、電気接触部8と、加締め部9と、これら電気接触部8及び加締め部9を連結する連結部10とを有する。
<About the structure of the crimp terminal 3>
1 to 4, a crimp terminal 3 is a female terminal fitting, and a base material is formed into a shape shown in the figure by pressing a metal plate made of copper or copper alloy (male type). It may be a terminal fitting). Although not specifically shown, the surface of the base material is plated. The plating is interposed between the copper material and the aluminum material that become the contact portions of different metals. The crimp terminal 3 includes an electrical contact portion 8, a crimping portion 9, and a connecting portion 10 that couples the electrical contact portion 8 and the crimping portion 9.

<電気接触部8について>
電気接触部8は、図示しない相手端子金具との電気的な接続部分であって、断面長方形の筒形状に形成される。電気接触部8の内部には、相手端子金具のタブに対する挿入空間が形成される。また、タブが挿入されると弾性的に接触する弾性接触片11が形成される。電気接触部8における引用符号12は、後述するコネクタハウジング52のランス54に引っ掛かり係止される被係止部を示す。
<About the electrical contact portion 8>
The electrical contact portion 8 is an electrical connection portion with a mating terminal fitting (not shown), and is formed in a cylindrical shape having a rectangular cross section. An insertion space for the tab of the mating terminal fitting is formed inside the electrical contact portion 8. Moreover, the elastic contact piece 11 which contacts elastically when a tab is inserted is formed. Reference numeral 12 in the electrical contact portion 8 indicates a locked portion that is hooked and locked to a lance 54 of the connector housing 52 described later.

<加締め部9について>
加締め部9は、アルミ電線2との電気的な接続部分であって、本実施例の端子金具は圧着端子3であることから、圧着により接続可能な部分に形成される。具体的には、アルミ電線2の導体露出部7を載置するための載置部13と、この載置部13に載置された導体露出部7を加締めるための一対の導体加締め片14と、導体露出部7の近傍の樹脂被覆6を加締めるための一対の被覆加締め片15とを有する部分に形成される。尚、載置部13は底板と称することもある。また、導体加締め片14はワイヤバレルと称することもある。さらに、被覆加締め片15はインシュレーションバレルと称することもある。
<About the caulking part 9>
The crimping part 9 is an electrical connection part with the aluminum electric wire 2, and since the terminal fitting of the present embodiment is the crimp terminal 3, it is formed in a part that can be connected by crimping. Specifically, a placement portion 13 for placing the conductor exposed portion 7 of the aluminum electric wire 2 and a pair of conductor crimping pieces for crimping the conductor exposed portion 7 placed on the placement portion 13 14 and a pair of covering crimping pieces 15 for crimping the resin coating 6 in the vicinity of the conductor exposed portion 7. In addition, the mounting part 13 may be called a bottom plate. Moreover, the conductor crimping piece 14 may be called a wire barrel. Furthermore, the covering crimping piece 15 may be called an insulation barrel.

一対の導体加締め片14と一対の被覆加締め片15は、端子軸方向に所定の間隔をあけて配置される。また、一対の導体加締め片14と一対の被覆加締め片15は、加締め前の形状が共に略V字状になる形状に形成される。尚、一対の導体加締め片14が導体露出部7を加締め、一対の被覆加締め片15が樹脂被覆6を加締めることから、これらは加締め対象の形状や外周長の差に合わせて異なる幅や突出長さで形成される。   The pair of conductor crimping pieces 14 and the pair of covering crimping pieces 15 are arranged at a predetermined interval in the terminal axis direction. Further, the pair of conductor crimping pieces 14 and the pair of covering crimping pieces 15 are formed in a shape in which the shape before caulking is both substantially V-shaped. In addition, since a pair of conductor crimping piece 14 crimps the conductor exposed part 7, and a pair of covering crimping piece 15 crimps the resin coating 6, these match with the difference of the shape and outer peripheral length of the object to be crimped. They are formed with different widths and protruding lengths.

加締め部9には、次のような部分が形成される。具体的には、一対の導体加締め片14と一対の被覆加締め片15との間の、左右両側の側壁46の各先端に外向きのテーパ47が形成される。外向きのテーパ47は、後述する防食材20(図5〜図7参照)が側壁46の先端を越え易くすることができる部分として形成される。外向きのテーパ47は、防食材20が一箇所に過剰に溜まってしまうことを防止することができる部分として形成される。外向きのテーパ47の形成により、防食部4の大型化を防止することができる。また、アルミ電線2との延面距離を適正に稼ぐことができる。   The following parts are formed in the caulking portion 9. Specifically, an outward taper 47 is formed at each tip of the left and right side walls 46 between the pair of conductor crimping pieces 14 and the pair of covering crimping pieces 15. The outward taper 47 is formed as a portion where the anticorrosion material 20 (see FIGS. 5 to 7) described later can easily exceed the tip of the side wall 46. The outward taper 47 is formed as a portion that can prevent the anticorrosion material 20 from being excessively accumulated in one place. The formation of the outward taper 47 can prevent the anticorrosion portion 4 from being enlarged. Moreover, the extended surface distance with the aluminum electric wire 2 can be earned appropriately.

<電線・端子接続部16について>
以上のような加締め部9に対し導体露出部7が圧着されると、引用符号16で示すような電線・端子接続部が形成される。電線・端子接続部16は、導体露出部7を一対の導体加締め片14にて加締めてなる導体加締め部分17と、この導体加締め部分17の周辺の非加締め部分18と、導体露出部7の近傍の樹脂被覆6を一対の被覆加締め片15にて加締めてなる被覆加締め部分19とを含んで形成される。
<About wire / terminal connection 16>
When the conductor exposed portion 7 is pressure-bonded to the caulking portion 9 as described above, an electric wire / terminal connecting portion as indicated by reference numeral 16 is formed. The electric wire / terminal connecting portion 16 includes a conductor crimping portion 17 formed by crimping the conductor exposed portion 7 with a pair of conductor crimping pieces 14, a non-caulking portion 18 around the conductor crimping portion 17, and a conductor A covering caulking portion 19 formed by caulking the resin coating 6 in the vicinity of the exposed portion 7 with a pair of covering caulking pieces 15 is formed.

電線・端子接続部16には、次のような部分が形成される。具体的には、一対の導体加締め片14と一対の被覆加締め片15との間の非加締め部分18に押圧加工部分48が形成される。この押圧加工部分48は、押圧加工手段49により押圧力が加えられて形成される。尚、押圧力は、圧着端子3の底板に向く方向(載置部13に向く方向)の力である。押圧加工部分48は、導体露出部7を構成する導体5の素線が飛び出さないようにするために加工・形成される。押圧加工手段49は、非加締め部分18を押圧するような押し治具である。   The wire / terminal connection portion 16 is formed with the following portions. Specifically, a pressing portion 48 is formed in the non-caulking portion 18 between the pair of conductor caulking pieces 14 and the pair of covering caulking pieces 15. The pressing portion 48 is formed by applying a pressing force by the pressing means 49. The pressing force is a force in a direction toward the bottom plate of the crimp terminal 3 (a direction toward the placement portion 13). The pressing portion 48 is processed and formed so that the strands of the conductor 5 constituting the conductor exposed portion 7 do not jump out. The pressing means 49 is a pressing jig that presses the non-caulking portion 18.

<連結部10について>
連結部10は、端子軸方向に所定長さでのびる略樋形状に形成される。連結部10の端子軸方向一端には、電気接触部8が連成される。また、連結部10の端子軸方向他端には、加締め部9が連成される。
<About connecting part 10>
The connecting portion 10 is formed in a substantially bowl shape extending a predetermined length in the terminal axis direction. An electrical contact portion 8 is coupled to one end of the connecting portion 10 in the terminal axis direction. A caulking portion 9 is coupled to the other end of the connecting portion 10 in the terminal axial direction.

<防食部4について>
図1及び図2において、防食部4は、電食を防止するため電線・端子接続部16を水密に覆う部分として形成される。具体的には、図中の矢印を上下・左右・前後と定義すると、加締め部9の上側(導体加締め部分17及び非加締め部分18の上側)、加締め部9の下側(載置部13の下側)、加締め部9の左側・右側、加締め部9の前側(導体加締め部分17の前側)、被覆加締め部分19の後側、を覆う部分として防食部4が形成される。別な言い方をすれば、電線・端子接続部16の前後と、電線・端子接続部16の端子軸回り全周にわたって覆う部分として防食部4が形成される。防食部4は、この形成方法に特徴を有する。以下、防食部4の形成方法について、電線付き端子1の製造方法に係る説明の中で詳細にふれることにする。
<About anticorrosion part 4>
1 and 2, the anticorrosion part 4 is formed as a part that covers the electric wire / terminal connection part 16 in a watertight manner to prevent electrolytic corrosion. Specifically, when the arrows in the figure are defined as up / down, left / right, and front / rear, the upper side of the crimping portion 9 (upper side of the conductor crimping portion 17 and the non-caulking portion 18) and the lower side of the crimping portion 9 (mounting) The anticorrosion part 4 is a part covering the lower side of the mounting part 13, the left and right sides of the crimping part 9, the front side of the crimping part 9 (front side of the conductor crimping part 17), and the rear side of the covering crimping part 19. It is formed. In other words, the anticorrosion part 4 is formed as a part covering the front and rear of the electric wire / terminal connection part 16 and the entire circumference around the terminal axis of the electric wire / terminal connection part 16. The anticorrosion part 4 is characterized by this formation method. Hereinafter, the formation method of the anticorrosion part 4 will be described in detail in the description which concerns on the manufacturing method of the terminal 1 with an electric wire.

<電線付き端子1の製造方法について>
図5ないし図7において、電線付き端子1は、次のような工程を経て製造される。すなわち、電線加工工程S1と、電線・端子接続工程S2と、押圧加工部分形成工程S21と、防食材供給工程S3(封止材供給工程、防水材供給工程)と、防食材硬化工程S4(封止材硬化工程、防水材硬化工程)とを順に経て製造される。防食材供給工程S3と防食材硬化工程S4は、防食部4を形成するための工程(形成方法)である。
<About the manufacturing method of the terminal 1 with an electric wire>
5 to 7, the terminal 1 with electric wire is manufactured through the following steps. That is, the electric wire processing step S1, the electric wire / terminal connection step S2, the pressing portion forming step S21, the anticorrosive material supply step S3 (sealing material supply step, waterproof material supply step), and the anticorrosive material curing step S4 (sealing) It is manufactured through a stop material curing step and a waterproof material curing step) in this order. The anticorrosive material supply step S3 and the anticorrosive material curing step S4 are steps (formation methods) for forming the anticorrosion part 4.

<電線加工工程S1について>
電線加工工程S1では、アルミ電線2の端末に導体露出部7を形成することが行われる。具体的には、樹脂被覆6を所定長さ分だけ除去して導体5を露出させて導体露出部7を形成することが行われる。
<About electric wire processing step S1>
In the wire processing step S <b> 1, the conductor exposed portion 7 is formed at the end of the aluminum wire 2. Specifically, the conductor coating 6 is exposed by removing the resin coating 6 by a predetermined length to form the conductor exposed portion 7.

<電線・端子接続工程S2について>
電線・端子接続工程S2では、導体露出部7の位置に圧着端子3の加締め部9を配置して、この後に圧着接続により電線・端子接続部16を形成することが行われる。圧着においては、圧着機のアンビルとクリンパとによるプレス、すなわち加締めが行われる。加締め部9に対し導体露出部7が圧着されると、導体加締め部分17と、非加締め部分18と、被覆加締め部分19とが形成される。
<About wire / terminal connection process S2>
In the electric wire / terminal connection step S2, the crimping portion 9 of the crimp terminal 3 is disposed at the conductor exposed portion 7, and thereafter, the electric wire / terminal connection portion 16 is formed by crimp connection. In crimping, pressing by an anvil and a crimper of a crimping machine, that is, caulking is performed. When the conductor exposed portion 7 is crimped to the caulking portion 9, a conductor caulking portion 17, a non-caulking portion 18, and a covering caulking portion 19 are formed.

<押圧加工部分形成工程S21について>
押圧加工部分形成工程S21では、押圧加工手段49にて非加締め部分18を押圧することが行われる。非加締め部分18に押圧加工部分48が形成されると、素線の飛び出しがない状態に(例えば平らな状態に)非加締め部分18が形成される。
<Regarding the pressed part forming step S21>
In the press-working part forming step S <b> 21, the non-caulking part 18 is pressed by the press-working means 49. When the pressing portion 48 is formed in the non-caulking portion 18, the non-caulking portion 18 is formed in a state where there is no protruding wire (for example, in a flat state).

<防食材供給工程S3について>
防食材供給工程S3では、防食材20(封止材、防水材)を電線・端子接続部16に供給することが行われる。防食材供給工程S3では、次のような構成の防食材供給装置が使用される。防食材供給装置は、金属製ノズル21を有するディスペンサー(静電併用型ディスペンサー)と、金属製ノズル21及び圧着端子3の間に電圧を印可する電圧印可部22と、上記ディスペンサーや電圧印可部22を制御する制御部とを含んで構成される。
<About the anticorrosive material supply step S3>
In the anticorrosive material supply step S <b> 3, the anticorrosive material 20 (sealing material, waterproof material) is supplied to the electric wire / terminal connection portion 16. In the anticorrosive material supply step S3, an anticorrosive material supply device having the following configuration is used. The anticorrosive material supply device includes a dispenser having a metal nozzle 21 (electrostatic combination type dispenser), a voltage application unit 22 that applies a voltage between the metal nozzle 21 and the crimp terminal 3, and the dispenser and the voltage application unit 22 described above. And a control unit for controlling.

防食材20は、液状の紫外線硬化性樹脂が採用される。このような防食材20は、金属製ノズル21及び圧着端子3の間に電圧が印可されると、液表面にプラスの電荷が誘起される。尚、金属製ノズル21及び圧着端子3の間に印可される電圧は、本実施例において3kV程度である。一方、圧着端子3の側には、マイナスの電荷が誘起される。   The anticorrosion material 20 is a liquid ultraviolet curable resin. In such an anticorrosive material 20, when a voltage is applied between the metal nozzle 21 and the crimp terminal 3, a positive charge is induced on the liquid surface. The voltage applied between the metal nozzle 21 and the crimp terminal 3 is about 3 kV in this embodiment. On the other hand, negative charges are induced on the crimp terminal 3 side.

金属製ノズル21及び圧着端子3の間に電圧が印可されると、防食材20の液の界面は電気力線の方向に静電的な力で引っ張られる。すなわち、金属製ノズル21から電線・端子接続部16に向かう方向に電荷を帯びた状態で防食材20が引き寄せられる。防食材20が引っ張られると(引き寄せられると)、この防食材20は金属製ノズル21における先端部の濡れ上がりのない状態で電線・端子接続部16に接触する。具体的には、電界が集中する部分まで連続する略糸引き状態になって接触する。   When a voltage is applied between the metal nozzle 21 and the crimp terminal 3, the liquid interface of the anticorrosion material 20 is pulled by an electrostatic force in the direction of the electric lines of force. That is, the anticorrosion material 20 is attracted in a state of being charged in a direction from the metal nozzle 21 toward the electric wire / terminal connection portion 16. When the anticorrosion material 20 is pulled (pulled), the anticorrosion material 20 comes into contact with the electric wire / terminal connection portion 16 without the tip of the metal nozzle 21 getting wet. Specifically, the contact is made in a substantially continuous stringing state up to the portion where the electric field is concentrated.

防食材供給工程S3では、防食材20の供給にあたり金属製ノズル21を図5及び図6の矢印X、Y、Z方向に移動させる。防食材20は、電荷を帯びた状態で供給されることから、このような防食材20は静電気力によって電線・端子接続部16に引き寄せられ、この後に供給位置の反対側まで回り込むような状態で供給される。すなわち、上側から供給されても電線・端子接続部16の下側まで回り込むような全周にわたって防食材20が供給される。電線・端子接続部16の全周にわたって供給された防食材20は、静電気力による引き寄せの力が作用して液だれすることなくその場に留まるようになる。この他、防食材20は、非加締め部分18における導体5の素線内に浸透して留まるようにもなる。   In the anticorrosive material supply step S3, the metal nozzle 21 is moved in the directions of arrows X, Y, and Z in FIGS. Since the anticorrosion material 20 is supplied in a charged state, such an anticorrosion material 20 is attracted to the electric wire / terminal connection portion 16 by electrostatic force, and then wraps around to the opposite side of the supply position. Supplied. That is, even if it is supplied from the upper side, the anticorrosion material 20 is supplied over the entire circumference that wraps around to the lower side of the electric wire / terminal connection part 16. The anticorrosive material 20 supplied over the entire circumference of the electric wire / terminal connection portion 16 stays in place without dripping due to the pulling force due to electrostatic force. In addition, the anticorrosion material 20 penetrates into the strands of the conductor 5 in the non-caulking portion 18 and stays there.

<防食材硬化工程S4について>
防食材硬化工程S4では、電線・端子接続部16の全周にわたって供給された防食材20に対し紫外線(UV光)を照射してUV硬化させることが行われる。防食材20は、液状の紫外線硬化性樹脂からなることから、例えばUVライト23の紫外線照射によるエネルギーを受けると、上記留まった状態を保持しながら短時間で硬化する。防食材20が硬化すると、電線・端子接続部16を水密に覆う防食部4の形成が完了する。すなわち、電線付き端子1の製造が完了する。
<About the anticorrosive curing step S4>
In the anticorrosion material curing step S4, the anticorrosion material 20 supplied over the entire circumference of the electric wire / terminal connection portion 16 is irradiated with ultraviolet rays (UV light) to be UV cured. Since the anticorrosion material 20 is made of a liquid ultraviolet curable resin, for example, when receiving energy by the ultraviolet irradiation of the UV light 23, the anticorrosive material 20 is cured in a short time while maintaining the above-mentioned staying state. When the anticorrosion material 20 is cured, the formation of the anticorrosion part 4 that covers the electric wire / terminal connection part 16 in a watertight manner is completed. That is, manufacture of the terminal 1 with an electric wire is completed.

防食部4は、上記説明から分かるように、十分な状態で形成することができる。また、防食部4は、最大幅がW1、最大高さがH1になるような形状に形成することができる。これは、防食材20が上述の如く略糸引き状態になって供給されることから、供給量を精度良く管理することが可能になり、結果、防食部4の形状が安定するためである。また、押圧加工手段49にて非加締め部分18が押圧されて押圧加工部分48が形成されることから、防食部4が大型化せずに安定するためである。防食部4の形状が安定することは、以下で説明するコネクタ51の組み付けに有効である。   As can be seen from the above description, the anticorrosion part 4 can be formed in a sufficient state. Moreover, the anticorrosion part 4 can be formed in a shape in which the maximum width is W1 and the maximum height is H1. This is because the anticorrosive material 20 is supplied in a substantially stringed state as described above, so that the supply amount can be managed with high accuracy, and as a result, the shape of the anticorrosion portion 4 is stabilized. Moreover, since the non-caulking part 18 is pressed by the pressing means 49 and the pressing part 48 is formed, the anticorrosion part 4 is stabilized without being enlarged. The stabilization of the shape of the anticorrosion part 4 is effective for assembling the connector 51 described below.

<電線付き端子1の使用例について>
図8において、電線付き端子1は、ワイヤハーネスの端末に配設されるコネクタ51の一構成部品として使用される。コネクタ51は、一対の電線付き端子1の他に、絶縁性を有するコネクタハウジング52を備えて構成される。
<Example of use of terminal 1 with electric wire>
In FIG. 8, the terminal 1 with an electric wire is used as one component part of the connector 51 arrange | positioned at the terminal of a wire harness. The connector 51 includes a connector housing 52 having an insulating property in addition to the pair of terminals 1 with electric wires.

図8及び図9において、コネクタハウジング52は、樹脂成形品であって矩形の箱形状に形成される。コネクタハウジング52の内部には、一対の端子収容室53が形成される。端子収容室53は、コネクタハウジング52の前面から後面までを貫通するように形成される。端子収容室53には、電線付き端子1の圧着端子3(被係止部12)を引っ掛けて係止するためのランス54が形成される。また、端子収容室53には、圧着端子3が当接するストッパ部55と、図示しない相手端子金具のタブが挿入されるタブ挿入口56とが形成される。   8 and 9, the connector housing 52 is a resin molded product and is formed in a rectangular box shape. A pair of terminal accommodating chambers 53 are formed inside the connector housing 52. The terminal accommodating chamber 53 is formed so as to penetrate from the front surface to the rear surface of the connector housing 52. The terminal accommodating chamber 53 is formed with a lance 54 for hooking and locking the crimp terminal 3 (the locked portion 12) of the terminal 1 with electric wire. Further, the terminal accommodating chamber 53 is formed with a stopper portion 55 with which the crimp terminal 3 abuts and a tab insertion port 56 into which a tab of a mating terminal fitting (not shown) is inserted.

端子収容室53は、コネクタハウジング52の後面において、幅がW2、高さがH2で開口するように形成される。幅W2は、防食部4の最大幅W1よりも大きく(W2>W1)、また、高さH2も防食部4の最大高さH1より大きい(H2>H1)。つまり、防食部4を有する電線付き端子1であっても、端子収容室53に対する圧着端子3の収容は問題ない。   The terminal accommodating chamber 53 is formed on the rear surface of the connector housing 52 so as to open with a width W2 and a height H2. The width W2 is larger than the maximum width W1 of the anticorrosion part 4 (W2> W1), and the height H2 is also larger than the maximum height H1 of the anticorrosion part 4 (H2> H1). That is, even if it is the terminal 1 with an electric wire which has the anticorrosion part 4, accommodation of the crimp terminal 3 with respect to the terminal accommodating chamber 53 has no problem.

コネクタハウジング52の外側には、図示しない相手コネクタに対するガイドリブ57と、ロッキングアーム58とが形成される。   On the outside of the connector housing 52, a guide rib 57 and a locking arm 58 for a mating connector (not shown) are formed.

<電線付き端子1のまとめ及び効果について>
以上、図1ないし図9を参照しながら説明してきたように、電線付き端子1は、アルミ電線2と、圧着端子3とを備えて構成される。アルミ電線2は、アルミニウム製又はアルミニウム合金製の導体5と、この導体5を覆う絶縁性の樹脂被覆6とを備えて構成される。アルミ電線2は、樹脂被覆6を除去して導体露出部7が形成される(電線加工工程S1)。一方、圧着端子3は、圧着部分としての加締め部9を有し、この加締め部9には、一対の導体加締め片14及び被覆加締め片15が形成される。また、加締め部9には、外向きのテーパ47も形成される。
<About summary and effect of terminal 1 with electric wire>
As described above, as described with reference to FIGS. 1 to 9, the terminal with electric wire 1 includes the aluminum electric wire 2 and the crimp terminal 3. The aluminum electric wire 2 includes a conductor 5 made of aluminum or an aluminum alloy, and an insulating resin coating 6 that covers the conductor 5. In the aluminum electric wire 2, the resin coating 6 is removed to form a conductor exposed portion 7 (electric wire processing step S1). On the other hand, the crimp terminal 3 has a crimped portion 9 as a crimped portion, and a pair of conductor crimped pieces 14 and a coated crimped piece 15 are formed in the crimped portion 9. The caulking portion 9 is also formed with an outward taper 47.

電線付き端子1は、導体露出部7に加締め部9を圧着して電線・端子接続部16が形成される(電線・端子接続工程S2)。電線・端子接続部16の形成に伴い、非加締め部分18には押圧加工部分48が形成される(押圧加工部分形成工程S21)。そして、このような電線・端子接続部16を覆うようにして防食部4が形成される。防食部4は、圧着端子3と金属製ノズル21との間に電圧を印可し且つ金属製ノズル21から電荷を帯びた防食材20を電線・端子接続部16に引き寄せるような状態で供給することにより形成される(防食材供給工程S3)。また、防食部4は、電線・端子接続部16に供給された防食材20に対し紫外線を照射しUV硬化させて形成される(防食材硬化工程S4)。   In the terminal 1 with electric wire, the caulking portion 9 is crimped to the conductor exposed portion 7 to form the electric wire / terminal connection portion 16 (electric wire / terminal connection step S2). Along with the formation of the electric wire / terminal connection portion 16, a pressing portion 48 is formed in the non-caulking portion 18 (pressing portion forming step S21). And the anticorrosion part 4 is formed so that such an electric wire and terminal connection part 16 may be covered. The anticorrosion part 4 supplies a voltage between the crimp terminal 3 and the metal nozzle 21 and supplies the anticorrosion material 20 charged with the electric charge from the metal nozzle 21 to the electric wire / terminal connection part 16. (Corrosion-proof material supply process S3). Moreover, the anticorrosion part 4 is formed by irradiating the anticorrosion material 20 supplied to the electric wire / terminal connection part 16 with UV rays and curing it (corrosion prevention material curing step S4).

電線付き端子1によれば、防食部4の形成にあたり、静電気力によって防食材20が電線・端子接続部16に引き寄せられるようになる。また、電線・端子接続部16に供給された防食材20に対しては、静電気力による引き寄せの力が作用することから、防食材20が電線・端子接続部16に留まるようになる。   According to the terminal 1 with an electric wire, the anticorrosion material 20 is attracted to the electric wire / terminal connection part 16 by electrostatic force when forming the anticorrosion part 4. Further, the anticorrosive material 20 supplied to the electric wire / terminal connecting portion 16 is attracted by electrostatic force, so that the anticorrosive material 20 remains at the electric wire / terminal connecting portion 16.

また、電線付き端子1によれば、防食部4の形成にあたり、電荷を帯びた防食材20が静電気力によって引き寄せられて供給位置の反対側まで回り込むようになる。すなわち、電線・端子接続部16の全周にわたって防食材20が供給されるようになる。全周にわたって供給された防食材20は、静電気力による引き寄せの力が作用して液だれすることなくその場に留まるようになる。   Moreover, according to the terminal 1 with an electric wire, in forming the anticorrosion part 4, the anticorrosive material 20 with a charge is drawn by electrostatic force, and it goes around to the opposite side of a supply position. That is, the anticorrosion material 20 is supplied over the entire circumference of the electric wire / terminal connection portion 16. The anticorrosion material 20 supplied over the entire circumference stays in place without dripping due to the drawing force due to electrostatic force.

また、電線付き端子1によれば、防食部4の形成にあたり、紫外線硬化性樹脂からなる防食材20が採用される。防食材20は、静電気力による引き寄せの力が作用することから電線・端子接続部16に留まり、そして、留まった状態で例えばUVライト23等による紫外線の照射がなされると、この紫外線照射によるエネルギーを受けて、上記留まった状態を保持しながら硬化するようになる。   Moreover, according to the terminal 1 with an electric wire, the anticorrosion material 20 which consists of ultraviolet curable resin is employ | adopted in the formation of the anticorrosion part 4. FIG. The anticorrosion material 20 stays at the electric wire / terminal connection portion 16 due to the attraction force due to electrostatic force, and when irradiated, for example, with UV light 23 or the like, the energy generated by the ultraviolet irradiation is applied. In response to this, it is cured while maintaining the above-mentioned stayed state.

また、電線付き端子1によれば、防食部4の形成にあたり、導体加締め部分17及びこの周辺の非加締め部分18と、被覆加締め部分19とを含んで電線・端子接続部16が形成されるようになる。すなわち、防食部4は、比較的広い範囲で形成されるようになる。   Moreover, according to the terminal 1 with an electric wire, in forming the anticorrosion part 4, the electric wire / terminal connection part 16 is formed including the conductor caulking part 17, the surrounding non-caulking part 18, and the covering caulking part 19. Will come to be. That is, the anticorrosion part 4 comes to be formed in a comparatively wide range.

また、電線付き端子1によれば、非加締め部分18に押圧加工部分48を有する電線・端子接続部16になることから、非加締め部分18の一部が飛び出したような形状にはならず、結果、非加締め部分18が露出しない状態で防食部4が形成される。また、防食部4が大型化しない状態にも形成される。従って、電線付き端子1によれば、防食性を十分に確保することができるという効果や、防食部4の大型化を防止することができるという効果を奏する。   Moreover, according to the terminal 1 with an electric wire, since it becomes the electric wire and terminal connection part 16 which has the press processing part 48 in the non-clamping part 18, it becomes a shape where a part of the non-clamping part 18 protruded. As a result, the anticorrosion part 4 is formed in a state where the non-caulking portion 18 is not exposed. Moreover, it forms also in the state where the anticorrosion part 4 does not enlarge. Therefore, according to the terminal 1 with an electric wire, there exists an effect that corrosion resistance can fully be ensured and the enlargement of the anticorrosion part 4 can be prevented.

本発明は本発明の主旨を変えない範囲で種々変更実施可能なことは勿論である。   It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

1…線付き端子、 2…アルミ電線(電線)、 3…圧着端子(端子金具)、 4…防食部(封止部、防水部)、 5…導体、 6…樹脂被覆、 7…導体露出部、 8…電気接触部、 9…加締め部、 10…連結部、 11…弾性接触片、 12…被係止部、 13…載置部、 14…導体加締め片、 15…被覆加締め片、 16…電線・端子接続部、 17…導体加締め部分、 18…非加締め部分、 19…被覆加締め部分、 20…防食材(封止材、防水材)、 21…金属製ノズル、 22…電圧印可部、 23…UVライト、 46…側壁、 47…外向きのテーパ、 48…押圧加工部、 49…押圧加工手段、 51…コネクタ、 52…コネクタハウジング、 53…端子収容室、 54…ランス、 55…ストッパ部、 56…タブ挿入口、 57…ガイドリブ、 58…ロッキングアーム、 S1…電線加工工程、 S2…電線・端子接続工程、 S3…防食材供給工程(封止材供給工程、防水材供給工程)、 S4…防食材硬化工程(封止材硬化工程、防水材硬化工程)、 S21…押圧加工部分形成工程   DESCRIPTION OF SYMBOLS 1 ... Terminal with a wire, 2 ... Aluminum electric wire (electric wire), 3 ... Crimp terminal (terminal metal fitting), 4 ... Corrosion-proof part (sealing part, waterproof part), 5 ... Conductor, 6 ... Resin coating, 7 ... Conductor exposure part 8 ... Electrical contact part, 9 ... Clamping part, 10 ... Connecting part, 11 ... Elastic contact piece, 12 ... Locked part, 13 ... Mounting part, 14 ... Conductor staking piece, 15 ... Covering staking piece 16 ... Electric wire / terminal connection part, 17 ... Conductor caulking part, 18 ... Non caulking part, 19 ... Cover caulking part, 20 ... Anticorrosive material (sealing material, waterproofing material), 21 ... Metal nozzle, 22 DESCRIPTION OF SYMBOLS ... Voltage application part, 23 ... UV light, 46 ... Side wall, 47 ... Outward taper, 48 ... Press processing part, 49 ... Press processing means, 51 ... Connector, 52 ... Connector housing, 53 ... Terminal accommodation chamber, 54 ... Lance, 55 ... Stopper, 56 ... Tab insertion slot 57 ... Guide ribs, 58 ... Rocking arms, S1 ... Electric wire processing step, S2 ... Electric wire / terminal connection step, S3 ... Anticorrosive material supply step (sealing material supply step, waterproof material supply step), S4 ... Anticorrosive material curing step ( Sealing material curing step, waterproof material curing step), S21 ... pressing process part forming step

Claims (2)

電線の樹脂被覆を除去して形成される導体露出部の位置に端子金具を接続して電線・端子接続部を形成し、さらには、該電線・端子接続部を覆う封止部を形成してなる電線付き端子において、
前記電線・端子接続部は、前記導体露出部を前記端子金具の導体加締め片にて加締めてなる導体加締め部分と、該導体加締め部分周辺の非加締め部分と、前記導体露出部近傍の前記樹脂被覆を前記端子金具の被覆加締め片にて加締めてなる被覆加締め部分とを含み、且つ、前記非加締め部分は、該非加締め部分を断面で見て斜めで平らに形成された押圧加工部分を有し、
前記端子金具は、前記導体加締め片と前記被覆加締め片との間の側壁先端に形成された外向きのテーパを有する
ことを特徴とする電線付き端子
A terminal fitting is connected to the position of the exposed conductor formed by removing the resin coating of the electric wire to form an electric wire / terminal connecting portion, and further, a sealing portion covering the electric wire / terminal connecting portion is formed. In the terminal with electric wire
The electric wire / terminal connection portion includes a conductor crimped portion obtained by crimping the conductor exposed portion with a conductor crimped piece of the terminal fitting, a non-crimped portion around the conductor crimped portion, and the conductor exposed portion. A coating caulking part formed by caulking the resin coating in the vicinity with a caulking caulking piece of the terminal fitting, and the non-caulking part is inclined and flat when the non-caulking part is viewed in cross section have a formed pressed working portion,
The terminal fitting terminals with electric wires, characterized in that it have a tapered outward formed in the side wall front end between the conductor clamping pieces and the covering crimping pieces.
請求項1に記載の電線付き端子と、該電線付き端子の端子金具を収容するコネクタハウジングとを含んでコネクタを構成し、該コネクタを端末に配設してな
ことを特徴とするワイヤハーネス。
And terminals with electric wires according to claim 1, the wire harness connector constitutes a and a connector housing for accommodating a terminal fitting of the electric wire with terminal, characterized in that ing by disposing the connector to the terminal .
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