JP2005051877A - Wiring structure of wiring board, junction block having the same, and method for wiring board - Google Patents

Wiring structure of wiring board, junction block having the same, and method for wiring board Download PDF

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Publication number
JP2005051877A
JP2005051877A JP2003204377A JP2003204377A JP2005051877A JP 2005051877 A JP2005051877 A JP 2005051877A JP 2003204377 A JP2003204377 A JP 2003204377A JP 2003204377 A JP2003204377 A JP 2003204377A JP 2005051877 A JP2005051877 A JP 2005051877A
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Japan
Prior art keywords
electric wire
wiring
wiring board
diameter
wire
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JP2003204377A
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Japanese (ja)
Inventor
Katsuhiro Kubota
勝弘 久保田
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Yazaki Corp
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Yazaki Corp
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Filing date
Publication date
Application filed by Yazaki Corp filed Critical Yazaki Corp
Priority to JP2003204377A priority Critical patent/JP2005051877A/en
Priority to EP04771009A priority patent/EP1649570B1/en
Priority to CN2009101659621A priority patent/CN101651315B/en
Priority to US10/565,784 priority patent/US7470130B2/en
Priority to PCT/JP2004/010777 priority patent/WO2005013449A1/en
Publication of JP2005051877A publication Critical patent/JP2005051877A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To prevent wring in a wiring board from floating, etc. <P>SOLUTION: The wiring structure of a wiring board 52 includes wiring 111 having a wiring 57 of low flexural rigidity on an insulating board 67 and having high flexural rigidity and distributed from above the wiring. The wiring having low flexural rigidity is a small diameter wiring 57, and the wiring having high flexural rigidity may be a large diameter wiring 111. The wiring having the low flexural rigidity is a wiring having a low hardness of an insulating coating, and the wiring having a high flexural rigidity may be wiring having the high hardness of an insulating coating. A junction block having a wiring structure of the wiring board 52 is adopted. A method for distributing the wirings having a plurality of types of different flexural rigidities on the same insulating board 67 includes a step of sequentially distributing from the wiring having low flexural rigidity. As the wiring having low flexural rigidity, the wiring may be distributed sequentially from the wiring having a thin thickness and/or the wiring having low hardness of the insulating coating. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、絶縁基板に複数種の電線を配索する際の電線の浮き上がり等を防止した配線板の配線構造とそれを備えるジャンクションブロック及び配線板の配線方法に関するものである。
【0002】
【従来の技術】
自動車に搭載される電気接続箱すなわちジャンクションブロックには配線板が配設されており、配線板には、複数本の電線がクロスしてあるいはランダムに配線(布線ないし配索)されて、所要の回路形態を構成している。
【0003】
図5は、従来のジャンクションブロックにおける配線板の一形態を示すものである(特許文献1参照)。
【0004】
この配線板121は、複数対の電線保持突部122を有する絶縁樹脂製の基板123と、前後の電線保持突部122の間に配設された導電金属製の圧接端子124とを備えるものであり、複数対の電線保持突部122の間に複数本の絶縁被覆電線125が挟持固定されつつ圧接端子124で圧接接続されている。圧接端子124は絶縁基板123の裏側に突出したタブ端子(図示せず)に続き、タブ端子は基板裏側のコネクタハウジング126内に位置してコネクタを構成している。
【0005】
電線125は別の仮配線板(図示せず)に布線ヘッドのノズル(図示せず)で一筆書き状に布線された後、ガイドピン(図示せず)を介して配線板121に移し替えられる。次いで、カッタ(図示せず)で電線125が所要位置で切断されて複数本の電線回路に分割される。あるいは、布線ヘッドのノズルで電線125が直接、配線板121に布線され、その後、カッタで切断されて所要形態の電線回路が構成される。
【0006】
電線125の圧接は治具ブレード(図示せず)で圧接端子124の上から電線125を押圧することで行われる。圧接端子124は一対の圧接片とその間のスロットとを備え、スロットの入口の刃部で電線125の被覆が切裂されつつ、芯線がスロット内に押し込まれ、一対の圧接片で挟持接続される。
【0007】
図6は従来のジャンクションブロックの一形態を示すものである(特許文献2参照)。
【0008】
このジャンクションブロック71は、合成樹脂製の上カバー72と中間カバー73と下カバー74とで成る箱状の接続箱本体内に、配線板75やバスバー回路板76やプリント回路板77やコネクタ78,79やヒューズ装着部80やリレー装着部81等を収容して成るものである。
【0009】
配線板75は、水平な絶縁基板上に複数本の電線82を配索しつつ複数のL型端子83の一方の圧接部83aに接続して構成される。L型端子83の他方のタブ状接触部83bはコネクタハウジング内に突出してコネクタ78を構成している。
【0010】
また、バスバー回路板76は絶縁基板上に複数のバスバー84を配索して成り、バスバー84の端子部がヒューズ装着部80内に位置している。プリント回路板77は絶縁基板に所要形状のプリント回路を有し、プリント回路板77と配線板75とは長尺端子85で接続されている。プリント回路板77に接続されたL字状の端子86がコネクタ79内に突出している。コネクタ78,79やヒューズ装着部80は中間カバー73から外側に突出している。プリント回路板77は取付板87やねじ88で中間カバー73や下カバー74に固定されている。
【0011】
【特許文献1】
特開平4−171688号公報(第4頁、第2図)
【特許文献2】
特開平11−27829号公報(第3頁、図2)
【0012】
【発明が解決しようとする課題】
しかしながら、図5の配線板にあっては、たとえば異なる径の二種類の電線125を配索した場合に、細い電線が太い電線で上向きに押されて、電線の保持や圧接が解除されやすくなるという問題があった。また、電線125の径は同じでも、絶縁被覆材料の種類等によって電線の曲げ応力等に差が生じ、曲げ応力の高い電線が曲げ応力の低い電線を押し上げて、同様に電線の保持や圧接が解除されやすくなるという問題があった。
【0013】
同様に、図6のジャンクションブロック71にあっても、配線板75に異なる径や材質の異なる電線82を混在させて配線した場合に、図5の配線板121と同様の問題を生じ、電線82の再保持や押さえ込みといった再セット作業を必要として、組立性や生産性が悪化するという懸念があった。
【0014】
本発明は、上記した点に鑑み、異なる径や曲げ強さ等の電線を混在して配線した場合でも、電線の浮き上がりや外れ等を生じることがなく、電線の再セットが不要な配線板の配線構造とそれを備えるジャンクションブロック及び配線板の配線方法を提供とすることを目的とする。
【0015】
【課題を解決するための手段】
上記目的を達成するために、本発明の請求項1に係る配線板の配線構造は、絶縁基板に曲げ剛性の低い電線が配索されると共に、該電線の上から曲げ剛性の高い電線が配索されたことを特徴とする。
上記構成により、最初に曲げ剛性の低い電線を配索し、次いで曲げ剛性の高い電線を配索した際に、曲げ剛性の高い電線が曲げ剛性の低い電線を押し下げ、剛性の低い電線の反発力を生じなくするから、あるいは、曲げ剛性の低い電線が反発力なく配索され、その上に曲げ剛性の高い電線が載るから、両電線が浮き上がりなく配線される。曲げ剛性の高い電線の上から曲げ剛性の低い電線を配索した場合には、曲げ剛性の高い電線の反発力で曲げ剛性の低い電線が押圧されて浮き上がってしまう。この不具合が確実に防止される。
【0016】
請求項2に係る配線板の配線構造は、請求項1記載の配線板の配線構造において、前記曲げ剛性の低い電線が小径の電線であり、前記曲げ剛性の高い電線が大径の電線であることを特徴とする。
上記構成により、最初に小径すなわち剛性の低い電線を配索し、次いで大径すなわち剛性の高いの電線を配索した際に、大径の電線が小径の電線を押し下げ、小径の電線の反発力を生じなくするから、あるいは、小径の電線が反発力なく配索され、その上に大径の電線が載るから、両電線が浮き上がりなく配線される。大径の電線の上から小径の電線を配索した場合には、大径の電線の反発力で小径の電線が押圧されて浮き上がってしまう。この不具合が確実に防止される。
【0017】
請求項3に係る配線板の配線構造は、請求項1又は2記載の配線板の配線構造において、前記曲げ剛性の低い電線が絶縁被覆の硬度の低い電線であり、前記曲げ剛性の高い電線が絶縁被覆の硬度の高い電線であることを特徴とする。
上記構成により、最初に硬度の低いすなわち剛性の低い電線を配索し、次いで硬度の高いすなわち剛性の高い電線を配索した際に、硬度の高い電線が硬度の低い電線を押し下げ、硬度の低い電線の反発力を生じなくするから、あるいは、硬度の低い電線が反発力なく配索され、その上に硬度の高い電線が載るから、両電線が浮き上がりなく配線される。硬度の高い電線の上から硬度の低い電線を配索した場合には、硬度の高い電線の反発力で硬度の低い電線が押圧されて浮き上がってしまう。この不具合が確実に防止される。
【0018】
請求項4に係るジャンクションブロックは、請求項1〜3の何れか1項に記載の配線板の配線構造を備えることを特徴とする。
上記構成により、ジャンクションブロックの組立時に配線板の電線の浮き上がりが防止され、ジャンクションブロック(電気接続箱)の組立が効率良く行われる。請求項1〜3に記載の作用を奏することは言うまでもない。
【0019】
請求項5に係る配線板の配線方法は、同一の絶縁基板に複数種の曲げ剛性の異なる電線を配索する方法であって、曲げ剛性の低い電線から順に配索していくことを特徴とする。
上記構成により、最初に曲げ剛性の低い電線を配索し、次いで曲げ剛性の高い電線を配索した際に、曲げ剛性の高い電線が曲げ剛性の低い電線を押し下げ、剛性の低い電線の反発力を生じなくするから、あるいは、曲げ剛性の低い電線が反発力なく配索され、その上に曲げ剛性の高い電線が載るから、両電線が浮き上がりなく配線される。曲げ剛性の高い電線の上から曲げ剛性の低い電線を配索した場合には、曲げ剛性の高い電線の反発力で曲げ剛性の低い電線が押圧されて浮き上がってしまう。この不具合が確実に防止される。
【0020】
請求項6に係る配線板の配線方法は、請求項5記載の配線板の配線方法において、前記曲げ剛性の低い電線として、太さの細い電線及び/又は絶縁被覆の硬度の低い電線から順に配索していくことを特徴とする。
上記構成により、最初に小径及び/又は硬度の低いすなわち剛性の低い電線を配索し、次いで大径及び/又は硬度の高いすなわち剛性の高いの電線を配索した際に、大径及び/又は硬度の高い電線が小径及び/又は硬度の低い電線を押し下げ、小径及び/又は硬度の低い電線の反発力を生じなくするから、あるいは、小径及び/又は硬度の低い電線が反発力なく配索され、その上に大径及び/又は硬度の高い電線が載るから、両電線が浮き上がりなく配線される。大径及び/又は硬度の高い電線の上から小径及び/又は硬度の低い電線を配索した場合には、大径及び/又は硬度の高い電線の反発力で小径及び/又は硬度の低い電線が押圧されて浮き上がってしまう。この不具合が確実に防止される。
【0021】
【発明の実施の形態】
以下に本発明の実施の形態を図面に基づいて詳細に説明する。
図1〜図2は、本発明に係る配線板の配線構造及び配線方法の一実施形態を示すものである。
【0022】
この配線板52は、合成樹脂製の絶縁基板67と、絶縁基板67上に所要形状にランダムに配索された複数本の大小二種類の径の電線57,111とで構成されるものである。符号57が小径の電線、符号111が大径の電線を示している。
【0023】
絶縁基板67は前後左右の四方の端部に複数の電線保持部91〜93を等ピッチで並列に有し、前端と左右端の各電線保持部92,93には圧接端子挿通孔94,95が上下に貫通して設けられている。各電線保持部91〜93は一対の挟持突部で構成され、一対の挟持突部の間の溝ないしスロット91a〜93aに電線57,111を挟持して固定させる。
【0024】
左右端の電線保持部92の外側にはさらに電線57,111の先端を保持させる電線保持部112が対向して設けられ、内外の電線保持部92,112の間に電線57,111を前後方向に挿通させる空間(隙間)113が形成されている。外側の電線保持部112は一対の半円状のリブで構成され、一対のリブの間のスロット112aに電線57,111の先端が挟持固定される。
【0025】
四方の電線保持部91〜93で略枠状に囲まれた絶縁基板67の内側部分は一段低い(やや深い)凹部96になっており、凹部内に略支柱状の電線保持部97やピン状の電線案内部98やリブ状の電線案内部99が配設されている。凹部内に小径及び大径の電線を重なった(交差した)状態で収容可能である。凹部96の深さは少なくとも大小の電線57,111の外径を足した深さに設定されている。
【0026】
電線保持部97は凹部96の底壁から突設された一対の挟持突部とその間の圧接端子挿通孔100とで構成され、電線案内部98は底壁から突設されたピン状の円柱部で構成され、電線案内部99は底壁から並列に突設されたリブで構成されている。絶縁基板67の左右端には固定用のブラケット101が外向きに突設されている。
【0027】
絶縁基板67には小径の電線57が先に所要形状に配索され、小径の電線が配索された後、大径の電線111が所要形状に配索される。すなわち、小径の電線の上に大径の電線が配索される。
【0028】
例えば左右端又は前後端の電線保持部91〜93に小径の電線57の一端部が圧入固定され、小径の電線57はピン状の電線案内部98に引っ掛けられつつ屈曲され、あるいはリブ状の電線案内部99を経て、他方向の電線保持部91〜93で他端部が圧入固定される。あるいは、中間の支柱状の電線保持部97を通り、屈曲されつつ他方向の電線保持部91〜93で他端部が圧入固定される。このようにして全ての小径の電線57が配索された後、小径の電線57の上から大径の電線111が配索される。小径の電線57は凹部96の底部側に深めに収容されることが好ましい。
【0029】
全ての小径の電線57が配索された後、例えば左右端又は前後端の電線保持部91〜93に大径の電線111の一端部が圧入固定され、大径の電線111はピン状の電線案内部98に引っ掛けられつつ屈曲され、あるいはリブ状の電線案内部99を経て、他方向の電線保持部91〜93で他端部が圧入固定される。あるいは、中間の支柱状の電線保持部97を通り、屈曲されつつ他方向の電線保持部91〜93で他端部が圧入固定される。このようにして全ての大径の電線111が配索される。
【0030】
小径の電線57を先に配索することで、大径の電線111を配索した際に、小径の電線57が大径の電線111で下向きに押されて浮き上がりなく絶縁基板67内に収容される。小径の電線57の屈曲に対する復元力(反発力)は小さいから、大径の電線111が小径の電線57を上側から押さえ付けることで、例えば小径の電線57は下向きに屈曲した状態で維持され、小径の電線57の復元力が発揮されず、大径の電線111の浮き上がりが起こらない。
【0031】
従来において、大径の電線111を先に配索した場合は、大径の電線111の屈曲に対する復元力(反発力)が大きいので、大径の電線111の上から小径の電線57を配索した際に、大径の電線111が小径の電線57に押されて下向きに屈曲しようとしても、小径の電線57が大径の電線111の反発力で押し戻されて浮き上がり、小径の電線57の再セットが必要になることがあったが、小径の電線57を先に配索し、大径の電線111を後から配索することで、このような問題は完全に解消される。
【0032】
図1,図2に示す小径及び大径の電線57,111の配索パターンはあくまでも一例であり、ジャンクションブロック1(図3)の回路仕様に応じて小径及び大径の電線57,111の配索パターンは適宜変更される。小径の電線57と大径の電線111とでは芯線(導体部)の径が相違し、絶縁被覆の厚さは同じであることも多い。大径の電線111は高電流を流す回路に用いられ、小径の電線57は低電流を流す回路に用いられる。自動車用のジャンクションブロックにおいては小径の電線57が主体となることが多く、大径の電線111は小径の電線57の何分の一ないし何十分の一程度と少ないことが多い。一例として、小径の電線57の導体部の断面積は0.5sq(mm)、大径の電線111の導体部の断面積は0.85sq(mm)である。
【0033】
配線板52の左右及び前側の各電線保持部92,93,97において、図3のジャンクションブロック1のバスバー49の圧接端子(端子)49bやコネクタブロック3,4の下段側の圧接端子(圧接部)8bに電線57,111が圧接接続される。圧接は一般的に電線57,111を上から圧接端子に向けて治具ブレードで押圧することで行われる。
【0034】
一例として、0.5sqの電線57と0.85sqの電線111とでは、圧接端子の外幅や高さは同じで、スロットの内幅のみが相違する(小径の電線用よりも大径の電線用のスロットの方が幅広である)。スロットへの圧入深さは大径の電線111の方が小径の電線57よりも深いが、各電線57,111(の導体部)の中心高さは同じである。
【0035】
なお、上記実施形態においては径の異なる二種類の電線57,111を使用したが、径の異なる三種類ないしそれ以上の種類の電線を使用する場合は、径の小さな順に各種類の電線を配索していく。この場合、各種電線の絶縁被覆は同じ材料・特性のものであり、径の小さな電線ほど剛性及び曲げ応力は小さい。
【0036】
また、上記実施形態においては太さの相違する電線57,111を使用したが、太さは同じで、剛性や曲げ応力が相違する二種類ないしそれ以上の種類の電線を配索する場合においては、剛性や曲げ応力が低い電線を先に配索し、次いで剛性や曲げ応力が高い電線を配索する。すなわち、各電線を剛性や曲げ応力の低い順に配索する。
【0037】
電線の剛性や曲げ応力は例えば絶縁被覆の材質によって変動する場合が多い。例えばJIS−C3301のゴムコードにおける、EP(エチレンプロピレン)ゴムコードの引張強さは0.41kg/mm以上、伸びは300%以上、SBR(スチレンブタジエン)ゴムコードの引張強さは0.51kg/mm以上、伸びは300%以上、難燃性であるクロロプレン系ゴムコードの引張強さは0.61kg/mm以上、伸びは250%以上、JIS−C3306のビニルコードにおける、塩化ビニル樹脂を主体としたビニルコードの引張強さは1.02kg/mm以上、伸びは100%以上であり、これらの値から、伸びやすさ、すなわち剛性や曲げ応力の低い順に、EPの絶縁被覆の電線、SBRの絶縁被覆の電線、クロロプレンの絶縁被覆の電線、塩化ビニル樹脂系の絶縁被覆の電線の順で配索すればよいことになる。
【0038】
また、電線の剛性や曲げ応力は絶縁被覆の硬度によっても変動する。硬度が硬ければ剛性や曲げ応力は高く、硬度が低ければ剛性や曲げ応力は低い。従って、絶縁被覆の硬度の低い順に電線を順に配索することが必要である。
【0039】
このように、同じ材質の絶縁被覆でも添加物や硬度等によって剛性や曲げ応力は変動するから、電線の完成品における剛性や曲げ応力等の特性を把握して、剛性や曲げ応力の低い種類順に電線を配索することが必要である。
【0040】
また、絶縁被覆の特性は同じでも、電線の導体部の種類や導体部径の相違(電線径は同じでも)によっても剛性や曲げ応力は変動するから、同様に電線の完成品における剛性や曲げ応力等の特性を把握して、剛性や曲げ応力の低い種類順に電線を配索することが必要である。
【0041】
図3のジャンクションブロック1は上記配線板52を備えたジャンクションブロックの一例であり、合成樹脂製のインナカバー2と、インナカバー2に上方からスライド式に係合固定される左右一対のコネクタブロック3,4と、同じくインナカバー2に上方からスライド式に係合固定される一側方のパワーブロック5と、両コネクタブロック3,4の間でインナカバー2上に配索される複数のバスバー49と、両コネクタブロック3,4の間でインナカバー2に上方から積層され、各コネクタブロック3,4やパワーブロック5やバスバー49に接続される上記ランダム配線板52と、ランダム配線板52の上に積層されるクロス配線板56とを備えるものである。
【0042】
各コネクタブロック3,4は合成樹脂製の各ハウジング6,7と、ハウジング6,7を水平に貫通した各端子8とで構成されている。各ハウジング6,7は背面側に上下二段(階段状)に水平な座部65を有し、各端子8の一方が各コネクタ嵌合室61内に雄型の電気接触部8aとして突出して位置し、各座部65の上面に、端子8の他方が圧接部(端子)8bとして垂直に立ち上げ形成されている。両ハウジング6,7の座部上の圧接部8bはそれぞれ対向して位置している。
【0043】
圧接部8bは一対の圧接片と、各圧接片の間のスロットとを備え、スロットの入口側の刃部で電線の絶縁被覆を切裂し、各圧接片の内端面で電線の導体部(芯線)に強く接触する。これは圧接端子においても同様である(圧接部と圧接端子とは同じ意味である)。
【0044】
各コネクタブロックの3,4の下段の圧接部8bは下側のランダム配線板52の絶縁基板67の左右の端部を貫通して電線57,111の左右端部に圧接接続され、各コネクタブロックの3,4の上段の圧接部8bは上側のクロス配線板56の第二層のX方向配線板54の左右の端部を貫通して電線58の左右の端部に圧接接続される。
【0045】
インナカバー2の基板部37に複数(多数)本のバスバー49が所要形状に配索されてバスバー回路板が構成される。バスバー49はインナカバー2の後端の壁部38寄りにおいて一端側を横一列に揃えて配置され、一端側を始点として基板部37に沿って前方に基板部37の長さの半分程度の位置まで所要形状に延長され、各バスバー49の他端の位置はランダムに設定されている。
【0046】
バスバー49の一端の下向きの雄型の端子49aは基板部37の孔部60を貫通して下側の電子制御回路基板(電子ユニット)50のコネクタ51に接続される。
【0047】
バスバー49の一端の上向きの圧接端子(端子)49cはクロス配線板56の上層の配線板55の後端部において電線59に圧接接続される。また、バスバー49の他端の上向きの圧接端子49bはランダム配線板52の絶縁基板67を貫通して絶縁基板67の長手方向中間部において電線57,111に圧接接続される。
【0048】
各配線板52,56の絶縁基板67〜69は回路仕様に応じて適宜枚数を積層可能である。各配線板52,56は各ブラケット部90,101をねじ等でインナカバー2に固定される。
【0049】
パワーブロック5のベース部23の背面側にはリレー22が装着され、リレー22の上面側でベース部23の上下二段の各座部70に圧接端子89が並列に配置されている。各圧接端子はパワーブロック内のバスバー(図示せず)に接続されている。
【0050】
下段の圧接端子89はランダム配線板52の絶縁基板67を貫通して絶縁基板67の前端部において電線57,111に圧接接続され、上段の圧接端子89は上側のクロス配線板56の上層の配線板55の前端部において電線59に圧接接続される。
【0051】
クロス配線板56の上からインナカバー2に対して合成樹脂製の幅広で薄型の上カバー(図示せず)が覆設され、各コネクタブロック3,4と各配線板52,56とパワーブロック5とが上カバーで一括して覆われて保護される。
【0052】
なお、明細書中で前後左右上下の定義はパワーブロックを前とした時のものであり、必ずしもジャンクションブロック1の配設方向と一致するものではない(あくまでも説明の便宜上のものである)。
【0053】
一方のコネクタブロック3は、ハウジング6の一方の側壁9にスライド係合部10と係止突起11とを有し、ハウジング6の他方の側壁12にスライド係合部13と係止突起(図示せず)とを有している。一側のスライド係合部10はインナカバー2の一側部にスライド係合し、他側のスライド係合部13はパワーブロック5の背面部にスライド係合する。
【0054】
他方のコネクタブロック4は、ハウジング7の左右の側壁15,16にスライド係合部17と係止突起18とをそれぞれ有している。一側のスライド係合部17はインナカバー2の一側部にスライド係合し、他側のスライド係合部(図示せず)はインナカバー2の他側部にスライド係合する。
【0055】
パワーブロック5はヒューズブロック21にリレー22を係止させて構成され、ヒューズブロック21は合成樹脂製のベース部23と、ベース部23の一側方に一体に形成された上下二段のコネクタ24,25と、ベース部23内に複数段に収容されるバスバー(図示せず)と、バスバーに続くヒューズ接続用の挟持端子と同じくコネクタ24,25内に突出する雄型の端子と、複数の小型(低背)のヒューズ27とを備えている。例えば一方のコネクタに外部電源が供給され、他方のコネクタは負荷側に接続される。
【0056】
下段のコネクタ25側の背壁28に、インナカバー2に対するスライド係合部29と係止用の突部30とが設けられ、上段のコネクタ24の背壁28側に、第一のコネクタブロック3のスライド係合部13に対する係合用の孔部32が設けられている。係合用の孔部32の側方に係止壁35が形成されている。係止壁35に一方のコネクタブロック3の係止突起(図示せず)が係合する。
【0057】
パワーブロック5のベース部23の他側端にはスライド係合部36が設けられている。パワーブロック5の一側方と他側方の各スライド係合部29,36はインナカバー2に上方からスライド係合する。
【0058】
インナカバー2は、水平な基板部37と、基板部37の後端に直交して上下に続く垂直な壁部38と、基板部37の前端に直交して下側に続く垂直な壁部39と、垂直な壁部39の下端から外側に直交する水平な底壁40と、基板部37の右端側において突出した壁部41と、壁部41に直交して続く垂直な壁部とを有し、垂直な壁部と後端の垂直な壁部38の左端側とに車両ボディ等に対する固定用の垂直なブラケット43が設けられている。
【0059】
後端の垂直な壁部38の左側部分にコネクタブロック3のスライド係合部10に対するガイド溝44と、係止突起11に対する係合凹部(図示せず)とが設けられている。また、壁部38の右側部分にコネクタブロック4のスライド係合部17に対するガイド溝45と、係止突起18に対する係合凹部(図示せず)とが設けられている。
【0060】
インナカバー2の前側の壁部39に沿ってヒューズブロック21が装着され、リレー22は両コネクタブロック3,4の間で基板部37上に位置する。壁部39の左側部分に、パワーブロック5の一方のスライド係合部29に対するガイド溝46が設けられ、右側の壁部41に、パワーブロック5の他方のスライド係合部36に対するガイド溝47が垂直に設けられている。さらに、ブラケット近傍の壁部に、コネクタブロック4のスライド係合部(図示せず)に対するガイド溝48が設けられている。
【0061】
インナカバー2の基板37の下側には電子制御回路基板(電子ユニット)50が収容される。電子制御回路基板(電子ユニット)50は、プリント回路等を有する回路基板と、回路基板上に配設された各コネクタ51,62と図示しない電子部品等とで構成されている。電子制御回路基板50はねじ等でインナカバーに固定される。電子制御回路基板50の下側からインナカバー2に対して合成樹脂製の薄型の下カバー(図示せず)が覆設され、下カバーで電子制御回路基板50が外部から保護される。
【0062】
図3において、インナカバー2の前後に各コネクタブロック3,4が結合手段で配設固定(実装)された状態で、インナカバー2の中央部分(バスバー配索部)の上に各配線板52,56がねじ止めで配設固定(実装)される。各配線板52,56は前後のコネクタブロック3,4間の空間内に省スペースで配設される。
【0063】
インナカバー2に対して隙間なくパワーブロック5やコネクタブロック3,4や回路基板50が実装され、且つ一対のコネクタブロック3,4間にバスバー49や複数層の配線板52,56が収容されることで、ジャンクションブロック1内のデッドスペースが削減され、ジャンクションブロック1の薄型化・小型化が達成される。
【0064】
図4は、上記各構成部品によるジャンクションブロック1のサブ組立状態(中途組付状態)の縦断面図(左右方向の切断線で断面した図)を示すものである。
図4で符号2はインナカバー、3,4は両コネクタブロック、52はランダム配線板、56はクロス配線板をそれぞれ示している。
【0065】
ランダム配線板52はインナカバー2の水平な基板部37の上に載置され、基板部37とランダム配線板52との間にバスバー49が水平に配索され、ランダム配線板52の上にクロス配線板56が積層され、両コネクタブロック3,4の端子8の下段の圧接部8bが座部65上でランダム配線板52の各電線57,111に圧接接続され、同じく上段の圧接部8bがクロス配線板56の下層側の電線58に圧接接続されている。ランダム配線板52において大径の電線111は上側に位置し、小径の電線57は下側に位置している。配線板52の内側には小径及び大径の電線57,111を上下に交差ないし重ねて収容するだけの十分な空間が設けられている。クロス配線板56の二枚の配線基板68,69における各電線58,59は直交して位置している。
【0066】
なお、コネクタブロック3,4の圧接部8bやパワーブロック5の圧接端子89やバスバー49の圧接端子49b,49cに代えて溶接端子等を用い、溶接端子を各配線板52,56の各電線57,111〜59に溶着接続させるようにすることも可能である。また、端子の一部を圧接端子や溶着端子とする(圧接端子と他の溶着端子等を混在させる)ことも可能である。
【0067】
【発明の効果】
以上の如く、請求項1,5記載の発明によれば、従来の曲げ剛性の高い電線の反発力で曲げ剛性の低い電線が押圧されて浮き上がってしまうという不具合が防止され、配線板の電線保持部や圧接端子からの電線の抜け出しや緩みが防止され、電線の再セット作業が不要となり、電線の配線作業が効率化され、配線板の生産性が向上する。
【0068】
請求項2,6記載の発明によれば、従来の大径の電線の反発力で小径の電線が押圧されて浮き上がってしまうという不具合が防止され、配線板の電線保持部や圧接端子からの電線の抜け出しや緩みが防止され、電線の再セット作業が不要となり、電線の配線作業が効率化され、配線板の生産性が向上する。
【0069】
請求項3,6記載の発明によれば、従来の硬度の高い電線の反発力で硬度の低い電線が押圧されて浮き上がってしまうという不具合が防止され、配線板の電線保持部や圧接端子からの電線の抜け出しや緩みが防止され、電線の再セット作業が不要となり、電線の配線作業が効率化され、配線板の生産性が向上する。
【0070】
請求項4記載の発明によれば、配線板の電線の浮き上がりが防止され、電線の再セットが不要となり、ジャンクションブロックの組立が効率良く行われるから、ジャンクションブロックの組立工数が低減される。
【図面の簡単な説明】
【図1】本発明に係る配線板の配線構造の一実施形態を示す斜視図である。
【図2】同じく配線板の配線構造を示す平面図である。
【図3】配線板を備えるジャンクションブロックの一実施形態を示す分解斜視図である。
【図4】同じくシャンクションブロックの組立状態を示す縦断面図である。
【図5】従来の配線板の配線構造の一形態を示す斜視図である。
【図6】従来のジャンクションブロックの一形態を示す縦断面図である。
【符号の説明】
1 ジャンクションブロック
52 配線板
57 小径の電線(曲げ剛性の低い電線)
67 絶縁基板
111 大径の電線(曲げ剛性の高い電線)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wiring structure of a wiring board that prevents the lifting of the electric wires when wiring a plurality of types of electric wires on an insulating substrate, a junction block including the wiring structure, and a wiring board wiring method.
[0002]
[Prior art]
A wiring board is installed in an electrical junction box or junction block mounted on an automobile. A plurality of wires are crossed or randomly wired (wired or routed) on the wiring board as required. The circuit form is configured.
[0003]
FIG. 5 shows one form of a wiring board in a conventional junction block (see Patent Document 1).
[0004]
The wiring board 121 includes an insulating resin substrate 123 having a plurality of pairs of electric wire holding protrusions 122 and a conductive metal pressure contact terminal 124 disposed between the front and rear electric wire holding protrusions 122. In addition, a plurality of insulation-coated wires 125 are sandwiched and fixed between a plurality of pairs of wire holding protrusions 122 and are press-contacted by press-contact terminals 124. The press contact terminal 124 follows a tab terminal (not shown) protruding from the back side of the insulating substrate 123, and the tab terminal is positioned in the connector housing 126 on the back side of the substrate to constitute a connector.
[0005]
The electric wire 125 is wired to another temporary wiring board (not shown) in a single stroke with a nozzle (not shown) of the wiring head, and then transferred to the wiring board 121 via a guide pin (not shown). Be replaced. Next, the electric wire 125 is cut at a required position by a cutter (not shown) and divided into a plurality of electric wire circuits. Or the electric wire 125 is directly wired to the wiring board 121 with the nozzle of a wiring head, and is cut | disconnected with a cutter after that, and the electric wire circuit of a required form is comprised.
[0006]
The press contact of the electric wire 125 is performed by pressing the electric wire 125 from above the press contact terminal 124 with a jig blade (not shown). The press contact terminal 124 includes a pair of press contact pieces and a slot between them, and the core wire is pushed into the slot while being cut by the blade at the entrance of the slot, and is sandwiched and connected by the pair of press contact pieces. .
[0007]
FIG. 6 shows an embodiment of a conventional junction block (see Patent Document 2).
[0008]
The junction block 71 includes a wiring board 75, a bus bar circuit board 76, a printed circuit board 77, a connector 78, and the like in a box-shaped connection box body composed of a synthetic resin upper cover 72, an intermediate cover 73, and a lower cover 74. 79, a fuse mounting portion 80, a relay mounting portion 81, and the like.
[0009]
The wiring board 75 is configured by connecting a plurality of electric wires 82 to one pressure contact portion 83a of a plurality of L-type terminals 83 while routing a plurality of electric wires 82 on a horizontal insulating substrate. The other tab-like contact portion 83 b of the L-shaped terminal 83 protrudes into the connector housing to constitute a connector 78.
[0010]
The bus bar circuit board 76 is formed by arranging a plurality of bus bars 84 on an insulating substrate, and the terminal portion of the bus bar 84 is located in the fuse mounting portion 80. The printed circuit board 77 has a printed circuit of a required shape on an insulating substrate, and the printed circuit board 77 and the wiring board 75 are connected by a long terminal 85. An L-shaped terminal 86 connected to the printed circuit board 77 protrudes into the connector 79. The connectors 78 and 79 and the fuse mounting portion 80 protrude outward from the intermediate cover 73. The printed circuit board 77 is fixed to the intermediate cover 73 and the lower cover 74 with a mounting plate 87 and screws 88.
[0011]
[Patent Document 1]
Japanese Patent Laid-Open No. 4-171688 (page 4, FIG. 2)
[Patent Document 2]
Japanese Patent Laid-Open No. 11-27829 (page 3, FIG. 2)
[0012]
[Problems to be solved by the invention]
However, in the wiring board of FIG. 5, for example, when two types of electric wires 125 having different diameters are routed, the thin electric wires are pushed upward by the thick electric wires, so that the holding and the pressure contact of the electric wires are easily released. There was a problem. In addition, even if the diameter of the electric wire 125 is the same, there is a difference in the bending stress of the electric wire depending on the type of the insulation coating material, etc. There was a problem that it was easier to release.
[0013]
Similarly, even in the junction block 71 of FIG. 6, when the wiring board 75 is mixed with wires 82 of different diameters and materials, the same problem as the wiring board 121 of FIG. There was a concern that assembly work and productivity would deteriorate due to the need for resetting work such as re-holding and pressing.
[0014]
In view of the above-mentioned points, the present invention is a wiring board that does not need to be re-set without causing any lifting or disconnection of the electric wire even when electric wires having different diameters or bending strengths are mixed and wired. An object is to provide a wiring structure, a junction block including the wiring structure, and a wiring method of the wiring board.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, the wiring structure of the wiring board according to claim 1 of the present invention is arranged such that an electric wire having a low bending rigidity is routed on an insulating substrate and an electric wire having a high bending rigidity is arranged on the electric wire. Characterized by being searched.
With the above configuration, when an electric wire with low bending rigidity is routed first and then an electric wire with high bending rigidity is routed, the electric wire with high bending rigidity pushes down the electric wire with low bending rigidity, and the repulsive force of the electric wire with low rigidity Or, since the electric wire with low bending rigidity is routed without repulsion and the electric wire with high bending rigidity is placed on the electric wire, both electric wires are wired without being lifted. When an electric wire with low bending rigidity is routed from above an electric wire with high bending rigidity, the electric wire with low bending rigidity is pressed and lifted by the repulsive force of the electric wire with high bending rigidity. This defect is surely prevented.
[0016]
The wiring structure of the wiring board according to claim 2 is the wiring structure of the wiring board according to claim 1, wherein the electric wire with low bending rigidity is a small-diameter electric wire, and the electric wire with high bending rigidity is a large-diameter electric wire. It is characterized by that.
With the above configuration, when a small-diameter or low-rigidity wire is routed first, and then a large-diameter or high-rigidity wire is routed, the large-diameter wire pushes down the small-diameter wire and the repulsive force of the small-diameter wire Or a small-diameter electric wire is routed without repulsive force, and a large-diameter electric wire is placed thereon, so that both electric wires are wired without being lifted. When a small-diameter wire is routed from above a large-diameter wire, the small-diameter wire is pressed and lifted by the repulsive force of the large-diameter wire. This defect is surely prevented.
[0017]
The wiring structure of the wiring board according to claim 3 is the wiring structure of the wiring board according to claim 1 or 2, wherein the electric wire with low bending rigidity is an electric wire with low insulation coating hardness, and the electric wire with high bending rigidity is It is an electric wire having high insulation coating hardness.
With the above configuration, when a low-hardness or low-rigidity wire is routed first, and then a high-hardness or high-rigidity wire is routed, the high-hardness wire pushes down the low-hardness wire and the low-hardness wire Since the repulsive force of the electric wire is not generated, or the electric wire with low hardness is routed without the repulsive force and the electric wire with high hardness is placed thereon, the two electric wires are wired without being lifted. When a low-hardness electric wire is routed from above a high-hardness electric wire, the low-hardness electric wire is pressed and lifted by the repulsive force of the high-hardness electric wire. This defect is surely prevented.
[0018]
A junction block according to a fourth aspect includes the wiring structure of the wiring board according to any one of the first to third aspects.
With the above configuration, the electric wires on the wiring board are prevented from being lifted when the junction block is assembled, and the junction block (electrical connection box) is efficiently assembled. It goes without saying that the effects of claims 1 to 3 are achieved.
[0019]
The wiring method of a wiring board according to claim 5 is a method of routing a plurality of types of electric wires having different bending rigidity on the same insulating substrate, wherein the electric wires having lower bending rigidity are arranged in order. To do.
With the above configuration, when an electric wire with low bending rigidity is routed first and then an electric wire with high bending rigidity is routed, the electric wire with high bending rigidity pushes down the electric wire with low bending rigidity, and the repulsive force of the electric wire with low rigidity Or, since the electric wire with low bending rigidity is routed without repulsion and the electric wire with high bending rigidity is placed on the electric wire, both electric wires are wired without being lifted. When an electric wire with low bending rigidity is routed from above an electric wire with high bending rigidity, the electric wire with low bending rigidity is pressed and lifted by the repulsive force of the electric wire with high bending rigidity. This defect is surely prevented.
[0020]
A wiring board wiring method according to a sixth aspect is the wiring board wiring method according to the fifth aspect, wherein the electric wire having a low bending rigidity is arranged in order from a thin electric wire and / or an electric wire having a low insulation coating hardness. It is characterized by searching.
With the above configuration, when a small-diameter and / or low-hardness or low-rigidity wire is first routed, and then a large-diameter and / or high-hardness or high-rigidity wire is routed, the large-diameter and / or A high-hardness electric wire pushes down a small-diameter and / or low-hardness electric wire to prevent the repulsion of a small-diameter and / or low-hardness electric wire, or a small-diameter and / or low-hardness electric wire is routed without a repulsive force. Since an electric wire having a large diameter and / or high hardness is placed thereon, both electric wires are wired without being lifted. When a small diameter and / or low hardness electric wire is routed from above a large diameter and / or high hardness electric wire, a small diameter and / or low hardness electric wire is generated by the repulsive force of the large diameter and / or high hardness electric wire. Pressed and lifted up. This defect is surely prevented.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 2 show an embodiment of a wiring structure and a wiring method of a wiring board according to the present invention.
[0022]
The wiring board 52 is composed of an insulating substrate 67 made of synthetic resin and a plurality of electric wires 57 and 111 having two different sizes, which are randomly arranged on the insulating substrate 67 in a required shape. . Reference numeral 57 indicates a small-diameter electric wire, and reference numeral 111 indicates a large-diameter electric wire.
[0023]
The insulating substrate 67 has a plurality of electric wire holding portions 91 to 93 in parallel at equal pitches at the front, rear, left and right end portions, and the electric wire holding portions 92 and 93 at the front end and the left and right ends have press contact terminal insertion holes 94 and 95, respectively. Is provided penetrating vertically. Each electric wire holding part 91-93 is comprised by a pair of clamping protrusion, and electric wires 57 and 111 are clamped and fixed to the groove | channel or slot 91a-93a between a pair of clamping protrusions.
[0024]
An electric wire holding portion 112 for holding the tips of the electric wires 57 and 111 is further provided on the outer side of the electric wire holding portions 92 at the left and right ends, and the electric wires 57 and 111 are disposed in the front-rear direction between the inner and outer electric wire holding portions 92 and 112. A space (gap) 113 to be inserted through is formed. The outer wire holding part 112 is composed of a pair of semicircular ribs, and the ends of the wires 57 and 111 are clamped and fixed in a slot 112a between the pair of ribs.
[0025]
An inner portion of the insulating substrate 67 surrounded by a substantially frame shape by the four wire holding portions 91 to 93 is a recessed portion 96 that is one step lower (slightly deep), and a substantially support-like wire holding portion 97 or pin shape is formed in the recessed portion. An electric wire guide portion 98 and a rib-like electric wire guide portion 99 are disposed. Small diameter and large diameter electric wires can be accommodated in the recessed portion in an overlapped (crossed) state. The depth of the recess 96 is set to a depth obtained by adding at least the outer diameters of the large and small electric wires 57 and 111.
[0026]
The electric wire holding portion 97 is composed of a pair of sandwiching protrusions protruding from the bottom wall of the recess 96 and the press contact terminal insertion hole 100 therebetween, and the electric wire guide portion 98 is a pin-shaped columnar portion protruding from the bottom wall. The electric wire guide part 99 is comprised by the rib protruded in parallel from the bottom wall. Fixing brackets 101 project outward from the left and right ends of the insulating substrate 67.
[0027]
A small-diameter electric wire 57 is first routed in the required shape on the insulating substrate 67, and after the small-diameter electric wire is routed, the large-diameter electric wire 111 is routed in the required shape. That is, a large-diameter electric wire is routed on a small-diameter electric wire.
[0028]
For example, one end portion of a small-diameter electric wire 57 is press-fitted and fixed to the electric wire holding portions 91 to 93 at the left and right ends or the front and rear ends, and the small-diameter electric wire 57 is bent while being hooked by a pin-shaped electric wire guide portion 98 or a rib-shaped electric wire. The other end portion is press-fitted and fixed by the wire holding portions 91 to 93 in the other direction through the guide portion 99. Alternatively, the other end is press-fitted and fixed by the electric wire holding portions 91 to 93 in the other direction while being bent through the intermediate column-shaped electric wire holding portion 97. After all the small diameter electric wires 57 have been routed in this way, the large diameter electric wires 111 are routed from above the small diameter electric wires 57. It is preferable that the small-diameter electric wire 57 is accommodated deeply on the bottom side of the recess 96.
[0029]
After all the small-diameter electric wires 57 have been routed, for example, one end of the large-diameter electric wire 111 is press-fitted and fixed to the electric wire holding portions 91 to 93 at the left and right ends or the front and rear ends, and the large-diameter electric wire 111 is a pin-shaped electric wire. The other end portion is press-fitted and fixed by the wire holding portions 91 to 93 in the other direction through the guide portion 98, bent while being hooked by the guide portion 98, or through the rib-shaped wire guide portion 99. Alternatively, the other end is press-fitted and fixed by the electric wire holding portions 91 to 93 in the other direction while being bent through the intermediate column-shaped electric wire holding portion 97. In this way, all large-diameter wires 111 are routed.
[0030]
By routing the small-diameter wire 57 first, when the large-diameter wire 111 is routed, the small-diameter wire 57 is pushed downward by the large-diameter wire 111 and accommodated in the insulating substrate 67 without lifting up. The Since the restoring force (repulsive force) with respect to the bending of the small-diameter electric wire 57 is small, the large-diameter electric wire 111 presses the small-diameter electric wire 57 from the upper side, for example, the small-diameter electric wire 57 is maintained in a state bent downward. The restoring force of the small-diameter electric wire 57 is not exhibited, and the large-diameter electric wire 111 does not rise.
[0031]
Conventionally, when the large-diameter electric wire 111 is routed first, the restoring force (repulsive force) against bending of the large-diameter electric wire 111 is large, so the small-diameter electric wire 57 is routed from above the large-diameter electric wire 111. When the large-diameter wire 111 is pushed by the small-diameter wire 57 and bent downward, the small-diameter wire 57 is pushed back by the repulsive force of the large-diameter wire 111 and floats. In some cases, it is necessary to set the cable. However, by arranging the small-diameter electric wire 57 first and then arranging the large-diameter electric wire 111 later, such a problem is completely solved.
[0032]
The wiring pattern of the small-diameter and large-diameter wires 57 and 111 shown in FIGS. 1 and 2 is merely an example, and the small-diameter and large-diameter wires 57 and 111 are arranged according to the circuit specifications of the junction block 1 (FIG. 3). The search pattern is changed as appropriate. The diameter of the core wire (conductor portion) differs between the small-diameter electric wire 57 and the large-diameter electric wire 111, and the thickness of the insulating coating is often the same. The large-diameter electric wire 111 is used for a circuit for flowing a high current, and the small-diameter electric wire 57 is used for a circuit for flowing a low current. In a junction block for automobiles, a small-diameter electric wire 57 is mainly used, and a large-diameter electric wire 111 is often as small as one-hundredth to several tenths of that of the small-diameter electric wire 57. As an example, the cross-sectional area of the conductor portion of the small-diameter electric wire 57 is 0.5 sq (mm 2 ), The cross-sectional area of the conductor portion of the large-diameter wire 111 is 0.85 sq (mm 2 ).
[0033]
In each of the left and right and front wire holding portions 92, 93, 97 of the wiring board 52, the pressure contact terminals (terminals) 49b of the bus bar 49 of the junction block 1 in FIG. ) The electric wires 57 and 111 are press-connected to 8b. The pressure contact is generally performed by pressing the electric wires 57 and 111 from above to the pressure contact terminal with a jig blade.
[0034]
As an example, the 0.5 sq electric wire 57 and the 0.85 sq electric wire 111 have the same outer width and height of the pressure contact terminals, but differ only in the inner width of the slot (a larger diameter electric wire than that for a small diameter electric wire). Slot is wider). The depth of press-fitting into the slot is larger in the large-diameter electric wire 111 than in the small-diameter electric wire 57, but the central heights of the electric wires 57 and 111 (the conductor portions thereof) are the same.
[0035]
In the above embodiment, two types of electric wires 57 and 111 having different diameters are used. However, when three or more types of electric wires having different diameters are used, the respective types of electric wires are arranged in ascending order of diameter. I will look for it. In this case, the insulation coatings of various electric wires are of the same material and characteristics, and the smaller the diameter, the smaller the rigidity and bending stress.
[0036]
Moreover, in the said embodiment, although the electric wires 57 and 111 from which thickness differs were used, in the case of routing two types or more types of electric wires from which the thickness is the same and rigidity and bending stress differ, First, wire that has low rigidity and bending stress, and then wire that has high rigidity and bending stress. That is, each electric wire is routed in the order of low rigidity and bending stress.
[0037]
In many cases, the rigidity and bending stress of the electric wire vary depending on, for example, the material of the insulation coating. For example, the tensile strength of EP (ethylene propylene) rubber cord in JIS-C3301 rubber cord is 0.41 kg / mm 2 The elongation is 300% or more, and the tensile strength of the SBR (styrene butadiene) rubber cord is 0.51 kg / mm. 2 The elongation of 300% or more and the flame resistance of chloroprene rubber cord is 0.61 kg / mm 2 The elongation is 250% or more, and the tensile strength of the vinyl cord mainly composed of vinyl chloride resin in the vinyl cord of JIS-C3306 is 1.02 kg / mm. 2 As described above, the elongation is 100% or more. From these values, in order of ease of elongation, that is, in the descending order of rigidity and bending stress, EP insulation-coated wire, SBR insulation-coated wire, chloroprene insulation-coated wire, chloride It is sufficient to route the wires in the order of vinyl resin insulation coating.
[0038]
In addition, the rigidity and bending stress of the electric wire vary depending on the hardness of the insulating coating. If the hardness is high, the rigidity and bending stress are high, and if the hardness is low, the rigidity and bending stress are low. Therefore, it is necessary to wire the wires in order from the lowest hardness of the insulation coating.
[0039]
In this way, even if the insulation coating is the same material, the rigidity and bending stress vary depending on the additive and hardness, etc., so grasp the characteristics such as rigidity and bending stress in the finished product of the wire, and order the types with the lowest rigidity and bending stress. It is necessary to route the wires.
[0040]
In addition, even if the characteristics of the insulation coating are the same, the rigidity and bending stress vary depending on the type of conductor part of the wire and the difference in conductor part diameter (even if the wire diameter is the same). It is necessary to grasp the characteristics such as stress and route the electric wires in the order of the types with the lowest rigidity and bending stress.
[0041]
The junction block 1 in FIG. 3 is an example of a junction block provided with the wiring board 52, and a synthetic resin inner cover 2 and a pair of left and right connector blocks 3 that are slidably engaged with the inner cover 2 from above. , 4, a power block 5 on one side that is slidably engaged with the inner cover 2 from above, and a plurality of bus bars 49 arranged on the inner cover 2 between the connector blocks 3, 4. And between the connector blocks 3 and 4, the inner cover 2 is laminated from above and connected to the connector blocks 3 and 4, the power block 5, and the bus bar 49. And a cross wiring board 56 laminated on each other.
[0042]
Each connector block 3, 4 is composed of a housing 6, 7 made of synthetic resin and each terminal 8 penetrating horizontally through the housing 6, 7. Each housing 6, 7 has a horizontal seat 65 in the upper and lower two steps (stepped shape) on the back side, and one of each terminal 8 projects into each connector fitting chamber 61 as a male electrical contact 8 a. The other of the terminals 8 is vertically formed on the upper surface of each seat 65 as a press contact part (terminal) 8b. The press-contact portions 8b on the seat portions of the housings 6 and 7 are positioned to face each other.
[0043]
The pressure contact portion 8b includes a pair of pressure contact pieces and a slot between the pressure contact pieces. The blade insulation portion on the inlet side of the slot is used to cut the insulating coating of the wire, and the conductor portion ( Strong contact with the core wire. The same applies to the press contact terminal (the press contact portion and the press contact terminal have the same meaning).
[0044]
The lower press contact portions 8b of the connector blocks 3 and 4 pass through the left and right ends of the insulating substrate 67 of the lower random wiring board 52 and are press-connected to the left and right ends of the electric wires 57 and 111, respectively. The upper and lower pressure contact portions 8 b of 3 and 4 pass through the left and right ends of the X-direction wiring board 54 of the second layer of the upper cross wiring board 56 and are pressure-connected to the left and right ends of the electric wire 58.
[0045]
A plurality of (many) bus bars 49 are arranged in a required shape on the substrate portion 37 of the inner cover 2 to constitute a bus bar circuit board. The bus bar 49 is arranged near the wall 38 at the rear end of the inner cover 2 so that one end side thereof is aligned in a horizontal line, and the end of the bus bar 49 starts from the one end side along the substrate portion 37 and is about half the length of the substrate portion 37. The position of the other end of each bus bar 49 is set at random.
[0046]
The downward male terminal 49 a at one end of the bus bar 49 passes through the hole 60 of the board portion 37 and is connected to the connector 51 of the lower electronic control circuit board (electronic unit) 50.
[0047]
An upward pressure contact terminal (terminal) 49 c at one end of the bus bar 49 is pressure-connected to the electric wire 59 at the rear end portion of the upper wiring board 55 of the cross wiring board 56. Further, the upward pressure contact terminal 49 b of the other end of the bus bar 49 penetrates the insulating substrate 67 of the random wiring board 52 and is press-connected to the electric wires 57 and 111 at the intermediate portion in the longitudinal direction of the insulating substrate 67.
[0048]
The insulating substrates 67 to 69 of the wiring boards 52 and 56 can be appropriately stacked according to circuit specifications. Each of the wiring boards 52 and 56 is fixed to the inner cover 2 with the bracket portions 90 and 101 by screws or the like.
[0049]
A relay 22 is mounted on the back side of the base portion 23 of the power block 5, and a pressure contact terminal 89 is arranged in parallel on each of the two upper and lower seat portions 70 of the base portion 23 on the upper surface side of the relay 22. Each press contact terminal is connected to a bus bar (not shown) in the power block.
[0050]
The lower press contact terminal 89 penetrates the insulating substrate 67 of the random wiring board 52 and is press-connected to the electric wires 57 and 111 at the front end portion of the insulating substrate 67, and the upper press contact terminal 89 is the upper layer wiring of the upper cross wiring board 56. The front end of the plate 55 is press-connected to the electric wire 59.
[0051]
A wide and thin upper cover (not shown) made of synthetic resin is provided over the inner cover 2 from above the cross wiring board 56, and each connector block 3, 4, each wiring board 52, 56 and the power block 5. And are covered and protected by the upper cover.
[0052]
In the specification, definitions of front, rear, left, right, up and down are those when the power block is in front, and do not necessarily coincide with the arrangement direction of the junction block 1 (for convenience of explanation only).
[0053]
One connector block 3 has a slide engagement portion 10 and a locking projection 11 on one side wall 9 of the housing 6, and a slide engagement portion 13 and a locking projection (not shown) on the other side wall 12 of the housing 6. Z). The slide engagement portion 10 on one side is slidably engaged with one side portion of the inner cover 2, and the slide engagement portion 13 on the other side is slidably engaged with the back surface portion of the power block 5.
[0054]
The other connector block 4 has slide engaging portions 17 and locking projections 18 on the left and right side walls 15 and 16 of the housing 7, respectively. The slide engaging portion 17 on one side is slidably engaged with one side portion of the inner cover 2, and the slide engaging portion (not shown) on the other side is slidably engaged with the other side portion of the inner cover 2.
[0055]
The power block 5 is configured by locking a relay 22 to a fuse block 21, and the fuse block 21 is composed of a synthetic resin base portion 23, and an upper and lower two-stage connector 24 integrally formed on one side of the base portion 23. 25, a bus bar (not shown) housed in a plurality of stages in the base portion 23, a male terminal protruding into the connectors 24, 25 as well as a fuse connecting pin following the bus bar, and a plurality of terminals And a small (low-profile) fuse 27. For example, an external power supply is supplied to one connector, and the other connector is connected to the load side.
[0056]
A slide engagement portion 29 and a locking projection 30 for the inner cover 2 are provided on the back wall 28 on the lower connector 25 side, and the first connector block 3 is provided on the back wall 28 side of the upper connector 24. A hole 32 for engagement with the slide engagement portion 13 is provided. A locking wall 35 is formed on the side of the engaging hole 32. A locking projection (not shown) of one connector block 3 engages with the locking wall 35.
[0057]
A slide engagement portion 36 is provided at the other end of the base portion 23 of the power block 5. The slide engaging portions 29 and 36 on one side and the other side of the power block 5 are slidably engaged with the inner cover 2 from above.
[0058]
The inner cover 2 includes a horizontal substrate portion 37, a vertical wall portion 38 that extends vertically up and down perpendicular to the rear end of the substrate portion 37, and a vertical wall portion 39 that extends perpendicularly to the front end of the substrate portion 37 and extends downward. A horizontal bottom wall 40 orthogonal to the outside from the lower end of the vertical wall 39, a wall 41 projecting on the right end side of the substrate portion 37, and a vertical wall that continues orthogonal to the wall 41. A vertical bracket 43 for fixing the vehicle body or the like is provided on the vertical wall portion and the left end side of the vertical wall portion 38 at the rear end.
[0059]
A guide groove 44 for the slide engagement portion 10 of the connector block 3 and an engagement recess (not shown) for the locking projection 11 are provided on the left side portion of the vertical wall portion 38 at the rear end. Further, a guide groove 45 for the slide engagement portion 17 of the connector block 4 and an engagement recess (not shown) for the locking projection 18 are provided on the right side portion of the wall portion 38.
[0060]
The fuse block 21 is mounted along the wall 39 on the front side of the inner cover 2, and the relay 22 is positioned on the board portion 37 between the connector blocks 3 and 4. A guide groove 46 for one slide engagement portion 29 of the power block 5 is provided in the left side portion of the wall portion 39, and a guide groove 47 for the other slide engagement portion 36 of the power block 5 is provided in the right wall portion 41. It is provided vertically. Further, a guide groove 48 for a slide engaging portion (not shown) of the connector block 4 is provided in the wall portion near the bracket.
[0061]
An electronic control circuit board (electronic unit) 50 is accommodated under the board 37 of the inner cover 2. The electronic control circuit board (electronic unit) 50 is composed of a circuit board having a printed circuit and the like, connectors 51 and 62 disposed on the circuit board, electronic components (not shown), and the like. The electronic control circuit board 50 is fixed to the inner cover with screws or the like. A thin lower cover (not shown) made of synthetic resin is provided on the inner cover 2 from the lower side of the electronic control circuit board 50, and the electronic control circuit board 50 is protected from the outside by the lower cover.
[0062]
In FIG. 3, each of the wiring boards 52 is placed on the central portion (bus bar routing portion) of the inner cover 2 in a state where the connector blocks 3 and 4 are disposed and fixed (mounted) by coupling means before and after the inner cover 2. , 56 are arranged and fixed (mounted) with screws. The wiring boards 52 and 56 are disposed in a space between the front and rear connector blocks 3 and 4 in a space-saving manner.
[0063]
The power block 5, the connector blocks 3, 4, and the circuit board 50 are mounted on the inner cover 2 without a gap, and the bus bar 49 and a plurality of layers of wiring boards 52, 56 are accommodated between the pair of connector blocks 3, 4. Thus, the dead space in the junction block 1 is reduced, and the junction block 1 is reduced in thickness and size.
[0064]
FIG. 4 shows a vertical cross-sectional view (a cross-sectional view taken along a cutting line in the left-right direction) of the sub-assembly state (half-way assembly state) of the junction block 1 using the above-described components.
In FIG. 4, reference numeral 2 denotes an inner cover, 3 and 4 denote both connector blocks, 52 denotes a random wiring board, and 56 denotes a cross wiring board.
[0065]
The random wiring board 52 is placed on the horizontal board part 37 of the inner cover 2, and the bus bar 49 is routed horizontally between the board part 37 and the random wiring board 52, and is crossed on the random wiring board 52. The wiring board 56 is laminated, the lower pressure contact portion 8b of the terminal 8 of both connector blocks 3 and 4 is pressure-connected to the electric wires 57 and 111 of the random wiring board 52 on the seat portion 65, and the upper pressure contact portion 8b is similarly connected. A pressure contact connection is made to the electric wire 58 on the lower layer side of the cross wiring board 56. In the random wiring board 52, the large-diameter electric wire 111 is located on the upper side, and the small-diameter electric wire 57 is located on the lower side. A sufficient space is provided inside the wiring board 52 so as to accommodate the small-diameter and large-diameter electric wires 57 and 111 in a vertically intersecting or overlapping manner. The electric wires 58 and 59 on the two wiring boards 68 and 69 of the cross wiring board 56 are positioned orthogonally.
[0066]
Note that welding terminals are used instead of the pressure contact portions 8b of the connector blocks 3 and 4, the pressure contact terminals 89 of the power block 5, and the pressure contact terminals 49b and 49c of the bus bar 49, and the welding terminals are used as the electric wires 57 of the wiring boards 52 and 56, respectively. , 111 to 59 can be welded and connected. It is also possible to use a part of the terminal as a welding terminal or a welding terminal (mixing the welding terminal and other welding terminals or the like).
[0067]
【The invention's effect】
As described above, according to the first and fifth aspects of the present invention, it is possible to prevent a problem that the electric wire with low bending rigidity is pressed and lifted by the repulsive force of the conventional electric wire with high bending rigidity, and the electric wire holding of the wiring board is prevented. This prevents the wire from coming out and loosening from the contact portion and the press contact terminal, eliminating the need to reset the wire, making the wire wiring work more efficient, and improving the productivity of the wiring board.
[0068]
According to the second and sixth aspects of the invention, the problem that the small-diameter electric wire is pressed and lifted by the repulsive force of the conventional large-diameter electric wire is prevented, and the electric wire from the electric wire holding portion of the wiring board or the press contact terminal is prevented. Is prevented from being pulled out and loosened, and there is no need to re-set the electric wire, the wiring operation of the electric wire is made efficient, and the productivity of the wiring board is improved.
[0069]
According to the third and sixth aspects of the invention, it is possible to prevent a problem that the low-hardness electric wire is pressed and lifted by the repulsive force of the conventional high-hardness electric wire, and is prevented from the electric wire holding portion and the press contact terminal of the wiring board. Pulling out and loosening of the electric wire is prevented, and the electric wire is not required to be reset. The electric wire is efficiently operated, and the productivity of the wiring board is improved.
[0070]
According to the fourth aspect of the present invention, the lifting of the electric wire on the wiring board is prevented, the electric wire does not need to be reset, and the assembly of the junction block is efficiently performed. Therefore, the number of steps for assembling the junction block is reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a wiring structure of a wiring board according to the present invention.
FIG. 2 is a plan view showing the wiring structure of the wiring board.
FIG. 3 is an exploded perspective view showing an embodiment of a junction block including a wiring board.
FIG. 4 is a longitudinal sectional view showing an assembled state of the junction block.
FIG. 5 is a perspective view showing one embodiment of a wiring structure of a conventional wiring board.
FIG. 6 is a longitudinal sectional view showing an embodiment of a conventional junction block.
[Explanation of symbols]
1 Junction block
52 Wiring board
57 Small-diameter wire (wire with low bending rigidity)
67 Insulating substrate
111 Large-diameter wires (wires with high bending rigidity)

Claims (6)

絶縁基板に曲げ剛性の低い電線が配索されると共に、該電線の上から曲げ剛性の高い電線が配索されたことを特徴とする配線板の配線構造。A wiring structure of a wiring board, wherein an electric wire having low bending rigidity is routed on an insulating substrate, and an electric wire having high bending rigidity is routed from above the electric wire. 前記曲げ剛性の低い電線が小径の電線であり、前記曲げ剛性の高い電線が大径の電線であることを特徴とする請求項1記載の配線板の配線構造。The wiring structure for a wiring board according to claim 1, wherein the electric wire having a low bending rigidity is a small-diameter electric wire, and the electric wire having a high bending rigidity is a large-diameter electric wire. 前記曲げ剛性の低い電線が絶縁被覆の硬度の低い電線であり、前記曲げ剛性の高い電線が絶縁被覆の硬度の高い電線であることを特徴とする請求項1又は2記載の配線板の配線構造。The wiring structure of a wiring board according to claim 1 or 2, wherein the electric wire having low bending rigidity is an electric wire having low insulation coating hardness, and the electric wire having high bending rigidity is an electric wire having high insulation coating hardness. . 請求項1〜3の何れか1項に記載の配線板の配線構造を備えることを特徴とするジャンクションブロック。The junction block provided with the wiring structure of the wiring board of any one of Claims 1-3. 同一の絶縁基板に複数種の曲げ剛性の異なる電線を配索する方法であって、曲げ剛性の低い電線から順に配索していくことを特徴とする配線板の配線方法。A wiring board wiring method, wherein a plurality of types of electric wires having different bending stiffnesses are arranged on the same insulating substrate, and the electric wires having lower bending stiffnesses are arranged in order. 前記曲げ剛性の低い電線として、太さの細い電線及び/又は絶縁被覆の硬度の低い電線から順に配索していくことを特徴とする請求項5記載の配線板の配線方法。The wiring method for a wiring board according to claim 5, wherein the electric wires having low bending rigidity are arranged in order from an electric wire having a small thickness and / or an electric wire having a low hardness of the insulation coating.
JP2003204377A 2003-07-31 2003-07-31 Wiring structure of wiring board, junction block having the same, and method for wiring board Pending JP2005051877A (en)

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JP2003204377A JP2005051877A (en) 2003-07-31 2003-07-31 Wiring structure of wiring board, junction block having the same, and method for wiring board
EP04771009A EP1649570B1 (en) 2003-07-31 2004-07-22 Junction block
CN2009101659621A CN101651315B (en) 2003-07-31 2004-07-22 Junction block
US10/565,784 US7470130B2 (en) 2003-07-31 2004-07-22 Junction box having components combined to an inner cover
PCT/JP2004/010777 WO2005013449A1 (en) 2003-07-31 2004-07-22 Junction block

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009005521A (en) * 2007-06-22 2009-01-08 Sumitomo Wiring Syst Ltd In-vehicle electrical junction box
JP2012120274A (en) * 2010-11-29 2012-06-21 Sumitomo Wiring Syst Ltd Electrical connection box
JP2015179833A (en) * 2014-02-27 2015-10-08 日立化成株式会社 Multi wiring board
JP2017056537A (en) * 2015-09-18 2017-03-23 マックス株式会社 Electric tool

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JP5644712B2 (en) * 2011-08-01 2014-12-24 株式会社デンソー Power supply
DE112017000890T5 (en) * 2016-02-18 2018-10-31 Autonetworks Technologies, Ltd. Circuit and electrical connection box
JP6699464B2 (en) * 2016-09-05 2020-05-27 株式会社オートネットワーク技術研究所 Connection module
US11458913B2 (en) 2017-06-15 2022-10-04 Autonetworks Technologies, Ltd. Wiring module including a power supply branch part

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1014501A1 (en) * 1998-12-22 2000-06-28 Sumitomo Wiring Systems, Ltd. An electrical connection box, its method of manufacturing, a wire connection busbar of an electrical connection box and its producing method
JP2002058134A (en) * 2000-08-09 2002-02-22 Auto Network Gijutsu Kenkyusho:Kk Installation structure for electric control unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009005521A (en) * 2007-06-22 2009-01-08 Sumitomo Wiring Syst Ltd In-vehicle electrical junction box
JP2012120274A (en) * 2010-11-29 2012-06-21 Sumitomo Wiring Syst Ltd Electrical connection box
JP2015179833A (en) * 2014-02-27 2015-10-08 日立化成株式会社 Multi wiring board
JP2017056537A (en) * 2015-09-18 2017-03-23 マックス株式会社 Electric tool

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