JP3930338B2 - Terminal - Google Patents

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Publication number
JP3930338B2
JP3930338B2 JP2002043596A JP2002043596A JP3930338B2 JP 3930338 B2 JP3930338 B2 JP 3930338B2 JP 2002043596 A JP2002043596 A JP 2002043596A JP 2002043596 A JP2002043596 A JP 2002043596A JP 3930338 B2 JP3930338 B2 JP 3930338B2
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Japan
Prior art keywords
barrel
terminal
electric wire
wire
terminals
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JP2002043596A
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JP2003272731A (en
JP2003272731A5 (en
Inventor
孝士 太田
宏樹 平井
良次 辻
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Application filed by Sumitomo Wiring Systems Ltd, AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to JP2002043596A priority Critical patent/JP3930338B2/en
Priority to US10/350,009 priority patent/US6670555B2/en
Priority to DE10307270.5A priority patent/DE10307270B4/en
Publication of JP2003272731A publication Critical patent/JP2003272731A/en
Publication of JP2003272731A5 publication Critical patent/JP2003272731A5/ja
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Description

【0001】
【発明が属する技術分野】
本発明は端子に関し、詳しくは、車両に配索される電線に圧着され、被固定材にボルトで固定される端子、例えば、車体に固定されるアース端子や、電源線の端末に圧着されてジャンクションボックスのバスバーにボルト固定される端子として用いられ、車両解体時に端子のボルト固定部から電線を容易に離脱させ、車体や相手側機器等に電線が残らないようにするものである。
【0002】
【従来の技術】
従来、自動車に配線する電線は、その端末に端子を接続し、該端子を車体にボルト締めで固定してアース処理を行う場合や、大電流の電線端末に接続した端子を機器等にボルト締めで固定する場合がある。
その一例として、車体へのアース処理を行う場合は、図1(A)に示すように、電線wの端末を端子1a、1bに圧着接続し、図示のように端子1a、1bを重ねてボルトBにより車体パネルPのボルト穴Hに締め付け固定しており、複数本の電線wをまとめて車体にアース接続している。
【0003】
自動車を廃車とし、解体する場合には、分別回収する必要があるため、電線群を集束したワイヤハーネスを車体から完全に取り除くことが要望されている。
その場合、ボルトBにより端子1a、1bが車体Pに固定された電線wは、ボルトBを車体Pから取り外す必要がある。しかしながら、ワイヤハーネスの車体Pからの取り除き作業は、通常、クレーンの先端に取り付けたフックをワイヤハーネスに引っ掛けて、引き抜くことにより行われており、ボルトBを1本づつ取り除く作業は非常に繁雑で手数がかかるために、車体解体作業時には為されない。
【0004】
よって、端子1a、1bがボルトBにより強固に車体Pに固定されている電線wは、図1(B)に示すように、端子1a、1bが車体Pに固定されたままの状態で電線wが途中で切断したり、端子1a、1bとの接続端(所謂、首下位置)で電線wが切断してしまい、車体Pに切断された電線wが残留しやすい。
【0005】
上記問題に鑑みて、従来、図1(A)に示す端子2が提案されている。該端子2は取付部2bにミシン目状のスリット2aを設けており、端子2がボルト締めされた状態のままスリット2aで破断することにより容易に解体可能としている。
【0006】
【発明が解決しようとする課題】
しかしながら、端子2を作業性、設置スペース等を考慮して、図1(B)に示すように重ねて同時にボルトBにより締結する場合には、下層の端子2Bは上層の端子2Aに覆い被せられているため、端子2Bに圧着された電線w2を引っ張った際に、端子2Bのスリットに応力が伝わらず、電線w2で破断しやすい問題が生じる。
また、ボルト穴の全周にスリットを設けると、固定部の強度が弱くなり、電線が引っ張られた際に容易に破断させることはできるが、車両の振動等の小さな負荷でも破断する恐れがあり、逆に取付安定性を損なう問題がある。
【0007】
本発明は上記した問題に鑑みてなされたもので、車両の振動等にも安定して固定される一方で、車両のリサイクル時等には電線を車体や機器等に残すことなく離脱できると共に、端子を重ねて用いた場合にも易解体性を損なわないことを課題としている。
【0008】
【課題を解決するための手段】
上記課題を解決するため、本発明は、導電性金属板を折曲加工して形成され、電線接続部の基板部の一端より、中心にボルト挿通孔を設けた固定部が突出した端子において、
上記基板部の他端側に絶縁被覆バレルを設けていると共に、該基板部の先端側の一側部より離脱用芯線バレル形成部を突設し、該離脱用芯線バレル形成部の根元部分を180度折り曲げて上記基板部に重ねあわせ、上記絶縁被覆バレルと並設される芯線バレルを設けると共に、上記180度折曲部分を易破断部としておき、
上記絶縁被覆バレルで電線の絶縁被覆をかしめ圧着すると共に上記芯線バレルで電線端末から露出した芯線をかしめ圧着し、
上記電線が引き抜かれると、上記易破断部が破断して、電線は芯線バレルと圧着した状態で上記固定部と離脱できる構成としていることを特徴とする端子を提供している。
【0009】
上記構成とすると、上記離脱用芯線バレル形成部が、その根元部分で180度折り曲げされることで加工硬化が生じ、該折曲部に曲げ戻す負荷が作用すると割れて破断しやすくなり、易破断部とすることができる。
つまり、車体解体時等に電線を引っ張ることで、該電線にかしめ圧着された芯線バレルが上方に引っ張られ、折曲部に曲げ戻す負荷が作用するため、容易に破断する。したがって、電線は易破断部で固定部から離脱された芯線バレルに圧着された状態のままで接続相手側より離脱させることができる。その結果、ボルトを取り外す必要がないと共に電線が破断して電線の一部が接続相手側に残ることを防止できる。
【0010】
また、上記離脱用芯線バレル形成部は上記基板部より突出し、折り返した状態で上記基板部の上面に重ねて配置さえる構成としているため、複数の上記端子を上記固定部で重ねて1ヶ所でアース処理した場合にも、下層の端子の上記離脱部が上層の端子の上記固定部に隠されることがなく、易解体性を損なうことがない。
【0011】
上記基板部の他端側に幅方向の両側より突設する絶縁被覆バレルは、上記芯線バレルよりも狭幅あるいは/および短丈とし、上記車両解体時等に電線が引き抜かれると、上記絶縁被覆バレルが両側に開きやすい形状としている。
【0012】
上記構成とすると、車両解体時に電線が引っ張られると、該電線にかしめ圧着された絶縁被覆バレルも電線から容易に離脱させることができる。
かつ、絶縁被覆バレルと芯線バレルにより電線は端子にかしめ圧着されているため、車両解体時に強い力で電線が引張された時のみ端子から離脱するが、車両振動等では電線を安定して保持し続けることができる。
【0013】
上記離脱用芯線バレル形成部の180度折り曲げられる易破部には、スリットあるいは/および溝を設けてもよい。
即ち、上記易破部にスリットあるいは/および溝を設けることで、車体解体時に電線が引っ張られた際に、易破さらに破断し易くなる。
【0014】
また、上記離脱用芯線バレル形成部が突出する側と対向する基板部の側面より押さえ片を突出し、該押さえ片を屈曲させることで、上記折り返された離脱用芯線バレル係止部を上方より押さえ保持する構成とすることが好ましい。
このように、上記押さえ片により上記離脱部を押さえ保持することで、車両解体時等以外の通常使用時において、基板上に重ねた芯線バレルの振動発生を押さえて、基板部に安定保持することができる。
【0017】
記端子は、2枚上下に重ね合わせ、各端子に接続する電線を平行配線とすると共に、各端子の易破断部を互いに離反する位置に配置している組み合わせ端子としても良い。
これら端子はボルト固定部を上下に重ねあわせる際、ボルト挿通孔の周縁で凹凸嵌合されて位置決め保持した状態でボルトが挿通されて車体に固定される。
【0018】
上記のように2枚重ねてすると、これら2枚の端子に接続した電線が同時に引っ張れるた場合、また、別個に引っ張れらたいずれも場合も、各端子の易破断部は重ねられていないため、夫れ夫れに引っ張り力を直接的に作用でき、各端子をボルト固定部から確実に離脱させることができる。
【0019】
【発明の実施の形態】
以下、本発明の実施形態を図面を参照して説明する。
第1実施形態の端子10は、図1の展開図に示すように一枚板の導電性金属板を打抜加工したものであり、中央にボルト挿通孔11aを有する固定部11と、該固定部11の一側より延在した基板部13と、該基板部13と固定部11の近傍の一側より突出した離脱用バレル形成部12とを備えている。
【0020】
離脱用バレル形成部12は、易破断部14となる180度折曲部を介して基板部13と連続している。上記易破断部14より突出させた基板重ね合わせ部分12cより両側方に突出させた部分を設け、この両側突出部を対向する芯線バレル12a、12bとしている。
上記離脱用バレル形成部12と対向する基板部13の側端から押さえ片13cを突出している。該押さえ片13cは離脱用バレル形成部12を易破断部14で180度曲げして上記基板重ね合わせ部分12cを基板部13の上面に重ね合わせた状態で、基板重ね合わせ部分12cを上面から押さえるものである。
【0021】
上記基板部13の他端側には幅方向の両側より絶縁被覆バレル13a、13bを突出させている。
絶縁被覆バレル13aと13bとは軸線方向にずらせると共に、これら絶縁被覆バレル13a、13bの幅L2は、芯線バレル12a、12bの幅L1よりも狭くしている。
【0022】
次に、上記端子10の組付手順を説明する。
図2に示すように、端子10を易破断部14で180°二つ折りにして離脱用芯線バレル形成部12の基板重ね合わせ部12cを基板部13の上面に重ねる。この状態で、図4(A)に示すように、押さえ片13cを屈曲させて基板重ね合わせ部12cを上方より押さえ付けて保持する。また、図4(B)(C)に示すように、芯線バレル12a、12b及び絶縁被覆バレル13a、13bを上向きに屈曲させる。この状態で、基板部13の幅方向両側より絶縁被覆バレル13aと13bとが軸線方向にずれた状態で突出すると共に、その軸線方向の前部(固定部の方向)に対向した芯線バレル12aと12bとが突出して、軸線方向に絶縁被覆バレルと芯線バレルとが並設された状態となる。
【0023】
上記のように基板部13の上面に離脱用芯線バレル部12(図5中にクロス斜線で示す箇所)の基板重ね合わせ部12cが載置され、その両側より芯線バレル12a、12bが突出した状態でワイヤハーネスを構成する1本の電線W1を上方より基板部13および基板重ね合わせ部12cの上面に載置し、図5及び図6(A)に示すように、芯線バレル12a、12bを折り曲げて電線W1の端末より露出させた芯線W1aにかしめ圧着すると共に、絶縁被覆バレル13a、13bを折り曲げて被覆部W1bをかしめ圧着している。
上記のように端子10に圧着された電線W1は、車体組みつけ時において、固定部11のボルト挿通孔11aと車体パネルPのボルト穴HとにワッシャRを介してボルトを挿通し、ボルト留めで車体パネルPに固定している。
【0024】
上記端子10が車体パネルPに固定された状態においては、電線W1は芯線バレル12a、12bによって強固にかしめ圧着されていると共に、該芯線バレル12a、12bよりも狭幅な絶縁被覆バレル13a、13bでかしめ圧着されている。この絶縁被覆バレル13a、13bは幅が芯線バレルより狭いと共に軸線方向にずらせているため、芯線バレル12a 12bよりは開きやすくなっている。したがって、絶縁被覆バレル13a、13bは、電線W1に大きな負荷による大変位が生じた場合には容易に開くが、車体の振動等の小さな負荷による小変位が生じた場合には、電線W1を保持し続けることができる。
上記押さえ片13cも同様で、折り曲げられた離脱用芯線バレル形成部12の基板重ね合わせ部12cを弱く保持しているので、離脱用芯線バレル形成部12に大きな負荷による大変位が生じた場合には開き易くなっている一方、車体の振動等の小さな負荷による小変位が生じた場合には、基板重ね合わせ部12を保持し続けることができる。
【0025】
次に、車両解体時における電線W1の取り外し作業を説明する。
車両解体時には、電線W1が他の電線群と共に結束されたワイヤハーネスがクレーン(図示せず)で引き上げられる。
クレーンによる大きな引張力で電線W1を上方へ引き上げると、図6(B)に示すように、芯線バレル12a、12bが電線W1の芯線W1aにかしめ圧着されたままの状態で電線W1が引き上げられ、電線W1を保持していた絶縁被覆バレル13a、13bと基板重ね合わせ部12cを保持していた押さえ片13cが開き、該引張力で易破断部14が破断して、離脱用芯線バレル形成部12と共に電線W1が離脱される。
即ち、端子10の固定部11及び基板部13は車体に残したままに、離脱用芯線バレル部12ごと電線W1を車体から離脱することができる。
【0026】
この際、易破断部14は180°折りされているため加工硬化し、離脱用芯線バレル形成部12を曲げ戻すことで易破断部14は割れ易くなっているので、離脱用芯線バレル形成部12を容易に離脱することができる。
また、易破断部14の方向が電線W1の軸線方向に対して若干斜めにとなっていることで、電線W1への上記引張力が易破断部14に伝達し易くなっている。なお、易破断部14は電線W1の軸線方向と平行としてもよい。
【0027】
図7は第2実施形態を示す。
第1実施形態との相違点は、易破断部14’にミシン目状のスリット14a’を設けていると共に、絶縁被覆バレル13a’、13b’の長さL3を短くしている点である。
【0028】
このように、易破断部14’にミシン目状のスリット14a’を設けることで、易破断部14’がより破断し易くなり、電線の離脱作業をさらに容易にすることができる。
なお、易破断部14’にはスリット14a’を設ける代わりに、薄肉部を形成する溝を切り欠いても容易に破断する効果が得られ好適である。
【0029】
また、絶縁被覆バレル13a’、13b’の長さL3を短くして、絶縁被覆バレル13a’、13b’による電線の保持力を弱めているので、電線が引き上げられた際に、絶縁被覆バレル13a’、13b’を容易に開くことができる。
【0030】
次に、図8および図9に第3実施形態を示す。
第2実施形態は2枚の端子10を重ねて1ヶ所でアース接続する組み合わせ端子の場合である。
端子10A、10Bに上述のように電線W1、W2を夫々圧着し、電線W1、W2を平行配線した状態で、夫々の固定部11を重ねてボルト留め固定する。
【0031】
上記端子10A、10Bの固定部11にはボルト挿通孔11aを連通させて重ねた状態で、ボルト挿通孔11aの周縁に凹凸嵌合部11b、11cが設けられており、所定位置に位置決め保持される。この重ねられた状態で、易破断部14は互いに離反する方向に位置し、下層の端子10Bの離脱用芯線バレル形成部12および易破断部14はは上層の端子10Aに重ねられないようになる。
【0032】
よって、クレーンによる引張力で電線W1、電線W2が同時に引張力が負荷された時、夫れ夫れの易破断部14がスムーズに破断されて、電線W1、W2とがともに車体にボルトで固定された固定部11から離脱する。
また、上層の端子10A側の電線W1が引っ張れず、下層の端子10Bの電線W2のみが引っ張れた場合においても、上層の端子10Aにより阻害されることなく、下層の端子10Bの易破断部14が破断する。
【0033】
図10は第3実施形態の変形例を示し、上下の端子10A、10Bに接続した電線W1、W2を直角方向としている。
なお、同一部分は同一符号を付して説明を省略する。
【0034】
この場合も図9と同様に、車体解体時に電線W1,W2が引っ張れると、端子10A、10Bを同時に、あるいは一方側の端子を他方側の端子に阻害されることなく易破断部14で破断することができる。
【0035】
図11は第1参考実施形態を示す。
第1参考実施形態の端子20は、第1実施形態の端子と同様に、導電性金属板を折曲加工して形成している。
中心にボルト挿通孔21aを設けた固定部21の一側部先端21bより180度折り曲げた易破断部23を介して離脱部24を設け、該離脱部24を固定部21の一側部に重ねた状態で固定部21の基端側に延在させている。
この延在部に電線接続用の基板部25として、その幅方向の両側より芯線バレル26と端部側に絶縁被覆バレル27を設けている。即ち、電線接続用の基板部25に対して固定部21を片持ち状に突出した外形としている。
【0036】
即ち、第1参考実施形態の端子20では、電線接続用の基板部25を離脱部24に設け、電線Wにかしめ圧着する絶縁被覆バレル27も芯線バレル26と共に電線Wと共に離脱させる点が第1実施形態と相違する。
このように、電線Wに負荷される引っ張り力を芯線バレル26だけでなく、絶縁被覆バレル27を介して基板部25、離脱部24に直接的に負荷でき、180度曲げされた易破断部23に大きな力を作用でき、確実に固定部21と離脱させることができる。
【0037】
図12及び図13は第2参考実施形態を示す。
第2参考実施形態は第1参考実施形態と同様な端子20Aと20Bを上下に2枚組み合わせたものである。
各端子20A、20Bの基板部25A、25Bより一方側に突出する固定部21A、21Bを上下に重ねあわせ、端子20A、20Bの基板部25の芯線バレル26、絶縁被覆バレル27にかしめ圧着している電線W1とW2とを平行配線している。
端子20Aと20Bの固定部21A、21Bにはボルト挿通孔21aの周縁の凹凸部21b、21cを設け、これらを嵌合することにより連通されるボルト挿通孔21aを挟んで両側に端子20Aの離脱部24Aと端子20Bの離脱部24Bを位置させている。
【0038】
上記のように端子20A、20Bとを組み合わせ、固定部21A、21Bを上下に重ねてボルトで車体に固定した場合においても、前記第2実施形態と同様に、クレーンによる引張力で電線W1、電線W2が同時に引張力が負荷された時、夫れ夫れの易破断部23A、23Bがスムーズに破断されて、電線W1、W2とがともに車体にボルトで固定された固定部21A、21Bから離脱する。
また、上層の端子20A側の電線W1が引っ張れず、下層の端子20Bの電線W2のみが引っ張れた場合においても、上層の端子20Aにより阻害されることなく、下層の端子21Bの易破断部23Bが破断する。
【0039】
なお、上記実施形態では、端子10、20を車体パネルPへのアース接続されるアース端子としているが、ボルト締めで機器等に接続する端子であればいずれにも適用できる。例えば、電源線の端末に接続し、ジャンクションボックス等の電気接続箱内のバスバーにボルト締めする端子等にも好適に用いることができる。
【0040】
【発明の効果】
以上の説明より明らかなように、本発明によると、芯線バレルを180度折りした易破断部を介して設けているため、車体解体時に電線を引っ張って芯線バレルが引っ張られることにより、上記易破断部で破断し易くなる。よって、車体解体時に、電線を接続相手側に残すことなく芯線バレルと共に離脱することができ、電線が破断して電線の一部が接続相手側に残るのを防ぐことができる。
また、上記易破断部にスリットあるいは/および溝を設けることで、車体解体時に電線が引っ張られて上記芯線バレルが上方に引っ張れた際に上記折曲部がより破断し易くなる。
【0041】
さらに、上記基板部の絶縁被覆バレルも、狭幅あるいは/および短丈とすることで、車体解体時に電線が引っ張られると開き易い形状としているため、該絶縁被覆バレルから電線が容易に離脱し、易判断部で破断された芯線バレルにのみ電線が圧着された状態で離脱させることができる。
かつ、通常の圧着端子と同様に、絶縁被覆バレルおよび芯線バレルにより電線をかしめ圧着して接続しているため、車両振動等では電線を安定して保持し続けることができ、電線との接続性能も信頼性の高いものとすることができる。
【0042】
また、2枚の端子の固定部を上下に重ねて組み合わせ端子とした場合には、180度曲げした易破断部を離反する方向に配置しているため、下層の端子のみに電線の引張力が作用しても、上層の端子に阻害されることなく固定部と離脱させ、電線を車体から完全に取り外すことができる。
【図面の簡単な説明】
【図1】 本発明の第1実施形態に係る端子の展開図である。
【図2】 端子の離脱用芯線バレル形成部を折り返した状態の上面図である。
【図3】 端子の離脱用芯線バレル形成部を折り返した状態の側面図である。
【図4】 (A)は図2のA−A線断面図、(B)は図3のB−B線断面図、(C)はC−C線断面図である。
【図5】 端子の電線圧着後の上面図である。
【図6】 (A)は端子の車体固定後の側面図、(B)は電線の離脱を示す側面図である。
【図7】 第2実施形態の端子の展開図である。
【図8】 第3実施形態の端子の組み合わせ前の斜視図である。
【図9】 端子組み合わせ後の斜視図である。
【図10】 第3実施形態の変形例を示す平面図である。
【図11】 第1参考実施形態の端子の斜視図である。
【図12】 第2参考実施形態の端子の組み合わせ前の斜視図である。
【図13】 端子組み合わせ後の斜視図である。
【図14】 (A)は従来の端子の車体固定前の斜視図、(B)は問題点を示す斜視図である。
【図15】 (A)は別の従来の端子の上面図、(B)は問題点を示す斜視図である。
【符号の説明】
10、20 端子
11、21 固定部
11a,21a ボルト挿通孔
12 離脱用芯線バレル形成部
12a、12b、26 芯線バレル
12c 基板重ね合わせ部
13,25 基板部
13a、13b、27 絶縁被覆バレル
13c 押さえ片
14、14’、23 易破断部
14a’ スリット
24 離脱部
B ボルト
H ボルト穴
P 車体パネル
W1、W2 電線
W1a 芯線
W1b 被覆部
[0001]
[Technical field to which the invention belongs]
The present invention relates to a terminal, and in particular, is crimped to an electric wire routed in a vehicle and fixed to a fixed material with a bolt, for example, a ground terminal fixed to a vehicle body or a terminal of a power supply line. It is used as a terminal that is bolted to the bus bar of the junction box, and easily disengages the electric wire from the bolt fixing portion of the terminal when the vehicle is disassembled so that the electric wire does not remain on the vehicle body or the counterpart device.
[0002]
[Prior art]
Conventionally, electric wires to be wired to automobiles have terminals connected to their terminals and fixed to the vehicle body with bolts for grounding, or terminals connected to high-current electric terminals are bolted to equipment, etc. It may be fixed with.
As an example, the case of performing the earthing to the vehicle body, as shown in FIG. 1 4 (A), the terminal pin 1a of the wires w, and crimp connection to 1b, overlapping the terminal 1a, 1b as shown The bolts B are fastened and fixed to the bolt holes H of the vehicle body panel P, and a plurality of electric wires w are collectively connected to the vehicle body.
[0003]
When an automobile is scrapped and dismantled, it is necessary to separate and collect, and therefore it is desired to completely remove the wire harness in which the electric wire group is focused from the vehicle body.
In that case, the electric wire w in which the terminals 1a and 1b are fixed to the vehicle body P by the bolt B needs to remove the bolt B from the vehicle body P. However, the removal work of the wire harness from the vehicle body P is usually performed by hooking the hook attached to the tip of the crane to the wire harness and pulling it out, and the work of removing the bolts B one by one is very complicated. Because it takes time, it is not done at the time of car body disassembly work.
[0004]
Therefore, the electric wire w to terminals 1a, 1b are fixed firmly to the body P by a bolt B, as shown in FIG. 1 4 (B), the electric wire in a state where the terminal 1a, 1b are fixed to the vehicle body P The wire w is cut in the middle, or the wire w is cut at the connection end (so-called neck position) with the terminals 1a and 1b, and the wire w cut to the vehicle body P tends to remain.
[0005]
In view of the above problems, conventionally, the terminal 2 shown in FIG. 1 5 (A) has been proposed. The terminal 2 is provided with a perforated slit 2a in the mounting portion 2b, and can be easily disassembled by breaking the terminal 2 with the slit 2a while being bolted.
[0006]
[Problems to be solved by the invention]
However, in consideration of workability, installation space, etc., when the terminals 2B are overlapped and fastened with bolts B as shown in FIG. 15 (B), the lower terminal 2B is covered with the upper terminal 2A. Therefore, when the electric wire w2 crimped to the terminal 2B is pulled, stress is not transmitted to the slit of the terminal 2B, and there is a problem that the electric wire w2 is easily broken.
Also, if slits are provided around the entire circumference of the bolt hole, the strength of the fixed part will be weakened and it can be easily broken when the wire is pulled, but it may break even with a small load such as vehicle vibration. On the contrary, there is a problem of impairing the mounting stability.
[0007]
The present invention has been made in view of the problems described above, and is stably fixed to vibrations of the vehicle and the like, while being able to be removed without leaving the electric wires in the vehicle body or equipment when the vehicle is recycled, Even when the terminals are used in an overlapping manner, it is an object to not impair easy disassembly.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention is a terminal formed by bending a conductive metal plate and protruding from one end of a substrate part of an electric wire connection part with a bolt insertion hole at the center. ,
An insulating coating barrel is provided on the other end side of the substrate portion, and a detachable core barrel forming portion is protruded from one side portion on the distal end side of the substrate portion, and a root portion of the detachable core barrel forming portion is Folded 180 degrees and overlapped with the substrate part, provided a core barrel arranged in parallel with the insulating coating barrel, and set the 180 degree bent part as an easily breakable part,
Crimping and crimping the insulation coating of the electric wire with the insulation coating barrel and crimping and crimping the core wire exposed from the end of the electric wire with the core wire barrel,
When the electric wire is pulled out, the easily breakable portion is broken, and the electric wire can be detached from the fixed portion while being crimped to the core wire barrel.
[0009]
With the above configuration, the detachable core wire barrel forming portion is bent by 180 degrees at its root portion, so that work hardening occurs, and when the bending-back load is applied to the bent portion, it is easily broken and easily broken. Part.
That is, by pulling the electric wire when the vehicle body is disassembled, the core wire barrel crimped to the electric wire is pulled upward, and a load to bend back to the bent portion acts, so that the wire breaks easily. Therefore, the electric wire can be detached from the connection partner side while being crimped to the core wire barrel separated from the fixed portion at the easily breakable portion. As a result, it is not necessary to remove the bolt, and it is possible to prevent the electric wire from being broken and a part of the electric wire from remaining on the connection partner side.
[0010]
Further, the detachable core wire barrel forming portion protrudes from the substrate portion and is arranged so as to be overlapped on the upper surface of the substrate portion in a folded state, so that a plurality of the terminals are overlapped on the fixing portion and grounded at one place. Even when the treatment is performed, the above-described detached portion of the lower-layer terminal is not hidden by the above-described fixing portion of the upper-layer terminal, and easy disassembly is not impaired.
[0011]
The insulation coating barrel projecting from both sides in the width direction on the other end side of the substrate portion is narrower than width and / or shorter than the core wire barrel, and when the electric wire is pulled out when the vehicle is disassembled, the insulation coating barrel The barrel is easy to open on both sides.
[0012]
With the above configuration, when the electric wire is pulled when the vehicle is disassembled, the insulation coating barrel that is crimped and crimped to the electric wire can be easily detached from the electric wire.
In addition, since the electric wire is crimped and crimped to the terminal by the insulation coating barrel and the core wire barrel, it is detached from the terminal only when the electric wire is pulled with a strong force when the vehicle is disassembled. You can continue.
[0013]
The 180 degrees easily rupture portion to be bent of the detaching core barrel forming part may be provided with a slit or / and grooves.
That is, the easy-to fracture portion by providing the slit or / and grooves, when the wire is pulled when the body disassembled, easily easily rupture portion is further broken.
[0014]
In addition, a pressing piece protrudes from the side surface of the substrate portion facing the side from which the detachable core barrel forming portion protrudes, and the pressing piece is bent to hold the folded detachable barrel fixing portion from above. It is preferable to have a configuration for holding.
In this way, by pressing and holding the detachment portion with the pressing piece, during normal use other than when the vehicle is dismantled, etc., the generation of vibration of the core barrel stacked on the substrate is suppressed, and the substrate portion is stably held. Can do.
[0017]
Upper Symbol terminals, two stacked together vertically, a wire to be connected to the terminals with the parallel wiring may be combined terminal which is disposed at a position away the frangible portion of the terminals to each other.
When the bolt fixing portions are overlapped vertically, the bolts are inserted and fixed to the vehicle body in a state where the bolts are unevenly fitted at the periphery of the bolt insertion hole and positioned and held.
[0018]
When two sheets are stacked as described above, when the electric wires connected to these two terminals are pulled at the same time, and in each case where the wires are pulled separately, the easily breakable portions of each terminal are not stacked, A pulling force can be directly applied to each of them, and each terminal can be reliably detached from the bolt fixing portion.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The terminal 10 of the first embodiment is obtained by punching a single conductive metal plate as shown in the development view of FIG. 1, and a fixing portion 11 having a bolt insertion hole 11a in the center, and the fixing A substrate portion 13 extending from one side of the portion 11 and a detaching barrel forming portion 12 projecting from one side in the vicinity of the substrate portion 13 and the fixing portion 11 are provided.
[0020]
The detachable barrel forming portion 12 is continuous with the substrate portion 13 through a 180-degree bent portion that becomes the easily breakable portion 14. A portion protruding from both sides of the substrate overlapping portion 12c protruding from the easily breakable portion 14 is provided, and the protruding portions on both sides serve as core barrels 12a and 12b facing each other.
A pressing piece 13 c protrudes from the side end of the substrate portion 13 that faces the separation barrel forming portion 12. The pressing piece 13c presses the substrate overlapping portion 12c from the upper surface in a state where the detachable barrel forming portion 12 is bent 180 degrees by the easily breakable portion 14 and the substrate overlapping portion 12c is overlapped on the upper surface of the substrate portion 13. Is.
[0021]
Insulation coating barrels 13 a and 13 b are projected from the other end side of the substrate portion 13 from both sides in the width direction.
The insulation coating barrels 13a and 13b are shifted in the axial direction, and the width L2 of the insulation coating barrels 13a and 13b is narrower than the width L1 of the core wire barrels 12a and 12b.
[0022]
Next, the procedure for assembling the terminal 10 will be described.
As shown in FIG. 2, the terminal 10 is folded by 180 ° at the easily breakable portion 14 and the substrate overlapping portion 12 c of the detachable core wire barrel forming portion 12 is overlapped on the upper surface of the substrate portion 13. In this state, as shown in FIG. 4A, the pressing piece 13c is bent and the substrate overlapping portion 12c is pressed and held from above. Further, as shown in FIGS. 4B and 4C, the core wire barrels 12a and 12b and the insulation coating barrels 13a and 13b are bent upward. In this state, the insulation coating barrels 13a and 13b protrude from both sides in the width direction of the substrate portion 13 in a state of being shifted in the axial direction, and the core barrel 12a facing the front portion in the axial direction (the direction of the fixed portion) 12b protrudes, and the insulation coating barrel and the core wire barrel are juxtaposed in the axial direction.
[0023]
As described above, the substrate overlapping portion 12c of the detaching core wire barrel portion 12 (the portion shown by cross diagonal lines in FIG. 5) is placed on the upper surface of the substrate portion 13, and the core wire barrels 12a and 12b protrude from both sides thereof. In FIG. 5 and FIG. 6 (A), the core wire barrels 12a and 12b are bent as shown in FIGS. 5 and 6A. Then, crimping and crimping are performed on the core wire W1a exposed from the end of the electric wire W1, and the covering portions W1b are crimped and crimped by bending the insulating coating barrels 13a and 13b.
The electric wire W1 crimped to the terminal 10 as described above is inserted into the bolt insertion hole 11a of the fixing portion 11 and the bolt hole H of the vehicle body panel P through the washer R when the vehicle body is assembled, It is fixed to the vehicle body panel P.
[0024]
In the state where the terminal 10 is fixed to the vehicle body panel P, the electric wire W1 is firmly crimped and crimped by the core wire barrels 12a and 12b, and the insulation coating barrels 13a and 13b are narrower than the core wire barrels 12a and 12b. It is crimped by crimping. Since the insulation coating barrels 13a and 13b are narrower than the core wire barrel and shifted in the axial direction, they are easier to open than the core wire barrels 12a and 12b. Accordingly, the insulation coating barrels 13a and 13b are easily opened when a large displacement occurs due to a large load on the electric wire W1, but holds the electric wire W1 when a small displacement occurs due to a small load such as vibration of the vehicle body. Can continue.
Similarly, the holding piece 13c holds the folded board overlapping portion 12c of the detachable core barrel forming portion 12 weakly, so that when the detachable core wire barrel forming portion 12 undergoes a large displacement due to a large load. Is easy to open, but when a small displacement occurs due to a small load such as vibration of the vehicle body, the substrate overlapping portion 12 can be held.
[0025]
Next, the removal work of the electric wire W1 at the time of vehicle dismantling will be described.
When the vehicle is disassembled, the wire harness in which the electric wire W1 is bundled together with another electric wire group is pulled up by a crane (not shown).
When the electric wire W1 is pulled upward by a large tensile force by the crane, as shown in FIG. 6B, the electric wire W1 is pulled up with the core barrels 12a and 12b being crimped and crimped to the core W1a of the electric wire W1, The insulation coating barrels 13a and 13b holding the electric wire W1 and the holding piece 13c holding the board overlapping portion 12c are opened, and the easily breakable portion 14 is broken by the tensile force. At the same time, the electric wire W1 is detached.
That is, the electric wire W1 can be detached from the vehicle body together with the detachable core barrel portion 12 while the fixing portion 11 and the substrate portion 13 of the terminal 10 remain in the vehicle body.
[0026]
At this time, since the easily breakable portion 14 is folded by 180 °, the easily breakable portion 14 is easily hardened, and the easily breakable portion 14 is easily broken by bending back the breakaway core wire forming portion 12. Can be easily removed.
Further, since the direction of the easily breakable portion 14 is slightly inclined with respect to the axial direction of the electric wire W1, the tensile force applied to the wire W1 is easily transmitted to the easily breakable portion 14. The easily breakable portion 14 may be parallel to the axial direction of the electric wire W1.
[0027]
FIG. 7 shows a second embodiment.
The difference from the first embodiment is that a perforated slit 14a ′ is provided in the easily breakable portion 14 ′ and the length L3 of the insulating coating barrels 13a ′ and 13b ′ is shortened.
[0028]
Thus, by providing the perforated slit 14a ′ in the easily breakable portion 14 ′, the easily breakable portion 14 ′ can be more easily broken, and the work of detaching the electric wire can be further facilitated.
In addition, instead of providing the slit 14a ′ in the easily breakable portion 14 ′, an effect of easily breaking can be obtained even if a groove forming the thin portion is notched.
[0029]
In addition, since the length L3 of the insulation coating barrels 13a ′ and 13b ′ is shortened to weaken the holding power of the wires by the insulation coating barrels 13a ′ and 13b ′, the insulation coating barrel 13a is removed when the wires are pulled up. ', 13b' can be opened easily.
[0030]
Next, FIGS. 8 and 9 show a third embodiment.
The second embodiment is a combination terminal in which two terminals 10 are overlapped and grounded at one place.
The electric wires W1 and W2 are respectively crimped to the terminals 10A and 10B as described above, and the respective fixing portions 11 are overlapped and fixed with bolts in a state where the electric wires W1 and W2 are wired in parallel.
[0031]
The fixing portions 11 of the terminals 10A and 10B are provided with concave and convex fitting portions 11b and 11c on the periphery of the bolt insertion hole 11a in a state where the bolt insertion holes 11a are communicated and overlapped, and are positioned and held at predetermined positions. The In this overlapped state, the easily breakable portion 14 is located in a direction away from each other, and the core wire barrel forming portion 12 and the easily breakable portion 14 of the lower terminal 10B are not overlapped with the upper terminal 10A. .
[0032]
Accordingly, when the electric wires W1 and W2 are simultaneously loaded with the tensile force by the crane, each easily breakable portion 14 is smoothly broken, and both the electric wires W1 and W2 are fixed to the vehicle body with bolts. The fixed part 11 is detached.
Even when the upper layer terminal 10A side electric wire W1 is not pulled and only the lower layer terminal 10B electric wire W2 is pulled, the upper layer terminal 10A is not obstructed by the upper layer terminal 10B, and the easily breakable portion 14 of the lower layer terminal 10B is formed. Break.
[0033]
FIG. 10 shows a modification of the third embodiment, in which the electric wires W1 and W2 connected to the upper and lower terminals 10A and 10B are in a perpendicular direction.
In addition, the same part attaches | subjects the same code | symbol and abbreviate | omits description.
[0034]
Also in this case, as in FIG. 9, when the electric wires W1 and W2 are pulled at the time of dismantling the vehicle body, the terminals 10A and 10B are broken at the easily breakable portion 14 at the same time or the one side terminal is not obstructed by the other side terminal. be able to.
[0035]
FIG. 11 shows a first reference embodiment.
The terminal 20 of the first reference embodiment is formed by bending a conductive metal plate, similarly to the terminal of the first embodiment.
A detachable portion 24 is provided via an easily breakable portion 23 bent 180 degrees from one side end 21b of the fixed portion 21 provided with a bolt insertion hole 21a in the center, and the detachable portion 24 is overlapped on one side portion of the fixed portion 21. In this state, it extends to the base end side of the fixed portion 21.
As the board portion 25 for connecting an electric wire to the extended portion, a core wire barrel 26 and an insulating coating barrel 27 are provided on the end side from both sides in the width direction. In other words, the fixed part 21 has a cantilevered outer shape with respect to the board part 25 for connecting wires.
[0036]
That is, in the terminal 20 according to the first reference embodiment, the first point is that the insulating coating barrel 27 that is crimped and crimped to the electric wire W is also detached together with the wire W together with the core wire barrel 26. It is different from the embodiment.
In this way, the tensile force applied to the electric wire W can be directly applied not only to the core wire barrel 26 but also to the substrate portion 25 and the detachment portion 24 via the insulating coating barrel 27, and the easily breakable portion 23 bent 180 degrees. A large force can be applied to the fixing portion 21 and the fixing portion 21 can be reliably detached.
[0037]
12 and 13 show a second reference embodiment.
In the second reference embodiment, two terminals 20A and 20B similar to those in the first reference embodiment are combined vertically.
The fixing portions 21A and 21B projecting to the one side from the board portions 25A and 25B of the terminals 20A and 20B are stacked one above the other and crimped and crimped to the core wire barrel 26 and the insulation coating barrel 27 of the board portion 25 of the terminals 20A and 20B. The electric wires W1 and W2 are parallelly wired.
The fixing portions 21A and 21B of the terminals 20A and 20B are provided with uneven portions 21b and 21c on the periphery of the bolt insertion hole 21a, and the terminals 20A are separated on both sides with the bolt insertion holes 21a communicated by fitting them. The separation part 24B of the part 24A and the terminal 20B is located.
[0038]
Even when the terminals 20A and 20B are combined as described above and the fixing portions 21A and 21B are stacked vertically and fixed to the vehicle body with bolts, the electric wire W1 and the electric wire are pulled by the tensile force of the crane as in the second embodiment. When the tensile force is simultaneously applied to W2, the respective easily breakable portions 23A and 23B are smoothly broken, and both the electric wires W1 and W2 are detached from the fixing portions 21A and 21B fixed to the vehicle body by bolts. To do.
Further, even when the upper-layer terminal 20A side electric wire W1 is not pulled and only the lower-layer terminal 20B electric wire W2 is pulled, the upper-layer terminal 20A is not obstructed by the upper-layer terminal 21B, and the easily breakable portion 23B of the lower-layer terminal 21B is Break.
[0039]
In the above-described embodiment, the terminals 10 and 20 are ground terminals that are grounded to the vehicle body panel P. However, any terminal can be used as long as it is a terminal that is bolted to a device or the like. For example, it can be suitably used for a terminal connected to a terminal of a power supply line and bolted to a bus bar in an electrical connection box such as a junction box.
[0040]
【The invention's effect】
As apparent from the above description, according to the present invention, since the provided via a frangible portion which is folded 180 degrees core barrels, by the core wire barrels is pulled to pull the wire at the time of vehicle dismantling, the It becomes easy to break at an easily breakable portion. Therefore, at the time of vehicle body disassembly, the electric wire can be detached together with the core wire barrel without leaving it on the connection partner side, and it is possible to prevent the electric wire from being broken and part of the electric wire from remaining on the connection counterpart side.
Moreover, by providing a slit or / and a groove in the easily breakable portion, the bent portion is more easily broken when the electric wire is pulled when the vehicle body is disassembled and the core barrel is pulled upward.
[0041]
Furthermore, the insulation coating barrel of the substrate part is also narrow or / and short, so that it is easy to open when the wire is pulled at the time of car body disassembly, so the wire is easily detached from the insulation coating barrel, It can be made to detach | leave in the state by which the electric wire was crimped | bonded only to the core wire barrel fracture | ruptured by the easy judgment part.
And, as with ordinary crimp terminals, the wires are caulked and crimped with insulation-coated barrels and core wire barrels, so they can be held stably in vehicle vibrations, etc. Can also be made highly reliable.
[0042]
In addition, when the fixed portions of the two terminals are stacked on top of each other to form a combined terminal, the easily breakable portion bent by 180 degrees is arranged in the direction away from it, so that the tensile force of the electric wire is applied only to the lower layer terminal. Even if it acts, it can be detached from the fixed part without being obstructed by the upper terminal, and the electric wire can be completely removed from the vehicle body.
[Brief description of the drawings]
FIG. 1 is a development view of a terminal according to a first embodiment of the present invention.
FIG. 2 is a top view showing a state in which a core barrel forming part for detaching a terminal is folded.
FIG. 3 is a side view of a state in which a terminal detachable core wire barrel forming portion is folded back;
4A is a cross-sectional view taken along line AA in FIG. 2, FIG. 4B is a cross-sectional view taken along line BB in FIG. 3, and FIG. 4C is a cross-sectional view taken along line CC.
FIG. 5 is a top view of the terminal after wire crimping.
FIG. 6A is a side view of the terminal after the vehicle body is fixed, and FIG. 6B is a side view showing the detachment of the electric wire.
FIG. 7 is a development view of terminals according to the second embodiment.
FIG. 8 is a perspective view before combination of terminals of the third embodiment.
FIG. 9 is a perspective view after terminal combination.
FIG. 10 is a plan view showing a modification of the third embodiment.
FIG. 11 is a perspective view of a terminal according to the first reference embodiment.
FIG. 12 is a perspective view before the terminal combination of the second reference embodiment.
FIG. 13 is a perspective view after terminal combination.
14A is a perspective view of a conventional terminal before the vehicle body is fixed, and FIG. 14B is a perspective view showing a problem.
FIG. 15A is a top view of another conventional terminal, and FIG. 15B is a perspective view showing a problem.
[Explanation of symbols]
10, 20 Terminals 11, 21 Fixing portions 11a, 21a Bolt insertion holes 12 Detachment core wire barrel forming portions 12a, 12b, 26 Core wire barrels 12c Substrate overlapping portions 13, 25 Substrate portions 13a, 13b, 27 Insulating coating barrel 13c Holding piece 14, 14 ', 23 Easy-to-break part 14a' Slit 24 Detachment part B Bolt H Bolt hole P Car body panel W1, W2 Electric wire W1a Core wire W1b Covering part

Claims (4)

導電性金属板を折曲加工して形成され、電線接続部の基板部の一端より、中心にボルト挿通孔を設けた固定部が突出した端子において、
上記基板部の他端側に絶縁被覆バレルを設けていると共に、該基板部の先端側の一側部より離脱用芯線バレル形成部を突設し、該離脱用芯線バレル形成部の根元部分を180度折り曲げて上記基板部に重ねあわせ、上記絶縁被覆バレルと並設される芯線バレルを設けると共に、上記180度折曲部分を易破断部としておき、
上記絶縁被覆バレルで電線の絶縁被覆をかしめ圧着すると共に上記芯線バレルで電線端末から露出した芯線をかしめ圧着し、
上記電線が引き抜かれると、上記易破断部が破断して、電線は芯線バレルと圧着した状態で上記固定部と離脱できる構成としていることを特徴とする端子。
In a terminal formed by bending a conductive metal plate, a fixed part with a bolt insertion hole at the center protrudes from one end of the substrate part of the wire connection part.
An insulating coating barrel is provided on the other end side of the substrate portion, and a detachable core barrel forming portion is protruded from one side portion on the distal end side of the substrate portion, and a root portion of the detachable core barrel forming portion is Folded 180 degrees and overlapped with the substrate part, provided a core barrel arranged in parallel with the insulating coating barrel, and set the 180 degree bent part as an easily breakable part,
Crimping and crimping the insulation coating of the electric wire with the insulation coating barrel and crimping and crimping the core wire exposed from the end of the electric wire with the core wire barrel,
A terminal characterized in that, when the electric wire is pulled out, the easily breakable portion is broken, and the electric wire can be detached from the fixing portion in a state of being crimped to a core wire barrel.
上記基板部の他端側に幅方向の両側より突設する絶縁被覆バレルは、上記芯線バレルよりも狭幅あるいは/および短丈とし、上記電線解体時等に電線が引き抜かれると、上記絶縁被覆バレルが両側に開きやすい形状としている請求項1に記載の端子。  The insulation coating barrel projecting from both sides in the width direction on the other end side of the substrate portion has a narrower width and / or shorter length than the core wire barrel. The terminal according to claim 1, wherein the barrel has a shape that is easy to open on both sides. 上記離脱用芯線バレル形成部の180度折り曲げられる易破断部には、スリットあるいは/および溝を設けている請求項1または請求項2に記載の端子。  The terminal according to claim 1 or 2, wherein a slit or / and a groove are provided in an easily breakable portion of the detachable core wire barrel forming portion that is bent by 180 degrees. 上記請求項1乃至請求項3のいずれか1項に記載の端子を2枚上下に重ね合わせ、各端子に接続する電線を平行配線とすると共に、各端子の易破断部を互いに離反する位置に配置している組み合わせ端子。The two terminals according to any one of claims 1 to 3 are stacked one above the other so that the wires connected to the terminals are parallel wires, and the easily breakable portions of the terminals are separated from each other. Arranged combination terminals.
JP2002043596A 2002-01-09 2002-02-20 Terminal Expired - Lifetime JP3930338B2 (en)

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