JP3693150B2 - Terminal positioning structure - Google Patents

Terminal positioning structure Download PDF

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JP3693150B2
JP3693150B2 JP12832699A JP12832699A JP3693150B2 JP 3693150 B2 JP3693150 B2 JP 3693150B2 JP 12832699 A JP12832699 A JP 12832699A JP 12832699 A JP12832699 A JP 12832699A JP 3693150 B2 JP3693150 B2 JP 3693150B2
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JP2000323220A (en
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康仁 鈴木
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Yazaki Corp
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Yazaki Corp
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【0001】
【発明の属する技術分野】
本発明は、例えば電気接続箱のコネクタ部における雄型の端子を幅狭化して狭ピッチに配置した際の端子の位置を幅方向のずれ(振れ)なく正確に規定した端子の位置決め構造に関するものである。
【0002】
【従来の技術】
図5〜図6は、従来の端子を備える電気接続箱の一例を示すものである。
この電気接続箱51は、合成樹脂製のアッパケース52(図5)とロアケース53(図6)とロアケース53内に収容されたバスバー回路板(図示せず)とを備えるものである。アッパケース52とロアケース53とで接続箱本体が構成される。
【0003】
図5の如く、アッパケース52には複数のヒューズ54が並列に配設されると共に、バスバー回路板上のバスバー(図示せず)から一体に立ち上げられた雄型の端子57を含む雌型のコネクタ55が配設されている。コネクタ55は、アッパケース52と一体に形成された雌型のコネクタハウジング56と、コネクタハウジング56のコネクタ嵌合室58内に突出された前記端子57とで構成される。アッパケース52の外周には、車両ボディに対する固定用のブラケット59が突設されている。
【0004】
図6の如く、ロアケース53には複数の雌型のコネクタ60やリレー接続部61が配設されている。雌型のコネクタ60は前述の如くバスバー回路板(図示せず)のバスバーから一体に突出形成された雄型の端子62をコネクタハウジング63内に収容して成るものである。
【0005】
バスバー回路板(図示せず)は複数枚が積層され、中間のバスバー回路板のバスバーの端子は上又は下のバスバー回路板を貫通してコネクタハウジング56(図5),63内に突出する。バスバー回路板(図示せず)は絶縁樹脂製の基板部と、基板部の表面に各種回路形状に配索されたバスバーとで構成される。
【0006】
図7に上記コネクタ55,60の一例を示す如く、コネクタ65の底壁66はアッパケース52(図5)ないしロアケース53(図6)の壁部と同一面に位置し、この底壁66に細長の長方形状の複数の端子挿通孔67が二列で並列に設けられ、各バスバーの雄型の端子68が各端子挿通孔67を通って合成樹脂製のコネクタハウジング69内に突出している。
【0007】
図8にバスバー70の端子68を示す如く、端子68はバスバー70の端末部又は中間部から直角に屈曲されて立ち上げられ、ないしは垂下され、バスバー70と同じ幅で突出している。端子68の先端部には、コネクタハウジング69(図7)の底壁66の端子挿通孔67や相手側の雌型の端子(図示せず)に対する導入用のガイド傾斜面71が形成されている。バスバー70は略帯状に長く続いたり、一平面上で所要パターンに屈曲している。
【0008】
バスバー70と端子68の幅は比較的広く形成されており、バスバー回路板上でのバスバー70の安定性は良く、端子68の振れ方向(矢印ロ方向)の寸法ばらつきS3 も比較的小さく抑えられている。しかしながら、端子68の幅S1 が広いために、コネクタ65(図7)内での端子間ピッチP1 が大きくなり、端子68の数が少なく制限されてしまい、近年の車両に搭載される電気部品や電子部品の増加に伴って、コネクタ65の端子68の多極化が必要となってきている。
【0009】
図9は、コネクタハウジング72内に雄型の端子73を高密度に収容した多極型のコネクタ74の一例を示すものである。
このコネクタ74においては、図10に示す如く電気接続箱内のバスバー75の幅を狭く形成し、端子73の基部(付根側)のみをバスバー75と同一の幅に形成し、端子73の主体部を基部よりも幅狭に形成して、雌型のコネクタハウジング72(図9)のコネクタ嵌合室76内における端子間ピッチP2 を小さくしている。前例の端子71(図8)の幅寸法S1 は一例として2.3mmであるのに対して本例の端子73(図10)の幅寸法S 2 は1.0mm程度である。
【0010】
【発明が解決しようとする課題】
しかしながら、上記従来の多極型のコネクタ74(図9)にあっては、図10の如くバスバー75の幅が狭いために、バスバー回路板上でバスバー75の安定性がやや悪くなり、端子73の振れが大きくなりやすく、振れ方向(幅方向)の寸法ばらつきS4 が図8の例の寸法ばらつきS3 と同程度であっても、相手側のコネクタ(図示せず)の雌型の端子の電気接触部(図示せず)の開口面積も必然的に小さくなっているために、相手側の端子に対する挿入性が悪くなり、雄雌のコネクタ同士の嵌合がスムーズに行われず、コネクタ嵌合力(挿入力)が増大し、最悪の場合には、雄雌の端子同士あるいは雄型の端子73と相手側のコネクタハウジングの前端部とが衝突して、端子73が変形したり傷付いたりするという懸念があった。また、コネクタ嵌合前においては、端子間ピッチP2 が狭いために、隣接する雄型の端子73同士が接触しかねないという懸念があった。
【0011】
本発明は、上記した点に鑑み、幅狭な端子の振れ方向(幅方向)の寸法ばらつきを極力小さく抑えて、端子同士や端子と相手側コネクタハウジングとの干渉をなくし、スムーズで確実なコネクタ嵌合を行わせ得る端子の位置決め構造を提供することを目的とする。
【0012】
【課題を解決するための手段】
上記目的を達成するために、本発明に係る端子の位置決め構造は、接続箱本体内にバスバー回路板が収容され、該バスバー回路板の表面に複数本のバスバーが配置され、該バスバーに端子が一体に立ち上げ形成され、該端子に幅広部と幅狭部とが形成され、該幅広部と該幅狭部との間に一対の傾斜部が形成され、該接続箱本体や接続箱本体上のサブ基板のハウジング部の壁部に、該端子に対する端子挿通孔が形成され、該端子挿通孔に、該一対の傾斜部と同一傾斜角度の一対の位置決め段部が形成され、該バスバーが該バスバー回路板の表面で支持された状態で、該一対の傾斜部が該一対の位置決め段部に当接することを特徴とする。
【0013】
【発明の実施の形態】
以下に本発明の実施の形態の具体例を図面を用いて詳細に説明する。
図1は、本発明に係る端子の位置決め構造を有する電気接続箱の一例を示すものである。
【0014】
この電気接続箱Aは、合成樹脂製のアッパケース1とロアケース2と、ロアケース2内に積層して収容された複数枚のバスバー回路板3と、各バスバー回路板3のバスバー4から上向きに一体に突出した複数本の雄型の端子5(51 ,52 ,53 )と、アッパケース1の片半部(図で左半部)の上に配置されるサブ基板6と、サブ基板6の上に覆設される合成樹脂製のカバー7とで構成される。アッパケース1やロアケース2は接続箱本体である。
【0015】
アッパケース(接続箱本体)1は、水平方向の基壁部8,9と、基壁部8の外周に形成された周壁部19と、基壁部8に配設されたハウジング部10や開口部13と、基壁部9に配設されたコネクタハウジング部11やヒューズ挿着部12とを備えている。
【0016】
周壁部19には車両ボディ等に対する固定用のブラケット14や、図示しない電気部品等に対する固定部15が設けられている。基壁部8は周壁部19の高さ方向中間部に位置し、基壁部8の上下に収容空間16,17が構成されている。
【0017】
アッパケース1の上側の右半部に大きめの雌型のコネクタハウジング部11が設けられ、左半部に小さめで細長の矩形ブロック状のハウジング部10と、複数の並列な矩形状の開口部13とが設けられている。アッパケース1の左半部は枠状の周壁部19で囲まれ、周壁部19の内側の収容空間16にハウジング部10が低く突出して位置している。収容空間16の四隅には、ハウジング部10とほぼ同じ高さで支持部18が形成され、支持部18にサブ基板6を載置可能である。支持部18とサブ基板6とには固定用のボルト孔20,21が形成されている。
【0018】
前記コネクタハウジング部11は、ワイヤハーネス側の雄型のコネクタ部(図示せず)に対するコネクタ嵌合室21を有している。コネクタハウジング部11の底側の壁部(図示せず)には複数の端子挿通孔(図示せず)が並列に形成されている。ブロック状のハウジング部10には複数の矩形スリット状の端子挿通孔22が並列に形成されている。端子挿通孔には下方からロアケース側の雄型の端子51 が挿通可能である。
【0019】
前記サブ基板6には、ハウジング部10の上側に位置する中継端子23と、所要の開口部13の上側に位置する中程度の大きさの雌型のコネクタハウジング部24とが設けられている。サブ基板6は絶縁樹脂製の水平な基板部25と上記中継端子23と各コネクタハウジング部24とで構成されている。中継端子23は略矩形筒状に形成され、内部に弾性接触片(図示せず)を有し、下方から雄型の端子51 を挿通可能である。各コネクタハウジング部24は、ワイヤハーネス側の雄型のコネクタ部(図示せず)に対するコネクタ嵌合室26を有している。コネクタハウジング部24の底側の壁部は基板部25が兼ねており、基板部25に複数の端子挿通孔(図示せず)が並列に形成されている。
【0020】
サブ基板6はアッパケース1の上側の収容空間16に配置され、サブ基板6の上からアッパケース1にカバー7が覆設される。カバー7は、サブ基板6側のコネクタハウジング部24と端子保護部23とに対する各開口部27,28を有している。開口部27からワイヤハーネス側のコネクタ部(図示せず)がコネクタハウジング部24内に挿入され、開口部28から例えばヒューズ(図示せず)の端子が中継端子23内に挿入される。カバー7はアッパケース側の係止爪29で固定される。
【0021】
前記ロアケース2は枠状の周壁30と底壁(図示せず)とを備え、周壁30は、アッパケース1に対する係止突起31と位置決め部32とを有している。ロアケース2上に複数枚のバスバー回路板3が積層配置されている。各バスバー回路板3は絶縁樹脂製の基板部33の表面側に所要の回路パターンの複数本のバスバー4を有しており、各バスバー4の端末部や中間部から前記雄型の端子51 〜53 が上向きに折り曲げられて一体に形成されている。下側のバスバー回路板3の雄型の端子(5)は上側のバスバー回路板3の基板部33の矩形スリット状の孔部34を貫通して上向きに突出している。ロアケース2はアッパケース1の下側の収容空間17内に組み込まれる。
【0022】
本発明においては、これらバスバー4側の端子5(51 〜53 )の長さ方向中間部の両側にテーパ状の一対の傾斜部(当接段部)36を形成して、傾斜部36の上側を幅狭部37とし、傾斜部36の下側を幅広部38として、一対の傾斜部36をアッパケース1のハウジング部10やコネクタハウジング部11あるいはサブ基板6側のコネクタハウジング部24の各壁部の端子挿通孔10…(10以外は図示せず)内のテーパ状(傾斜状)の位置決め段部(図1には図示せず)に当接させて、幅狭の端子5(51 〜53 )の位置決めを行わせることを特徴としている。
【0023】
ロアケース2側の端子51 はハウジング部10の端子挿通孔22を経てサブ基板6の中継端子23内に突出する。端子52 はコネクタハウジング部11の底側の壁部の端子挿通孔(図示せず)を経てコネクタ嵌合室11内に突出する。端子53 はアッパケース1の基壁部8の開口13を通り、サブ基板6のコネクタハウジング部24の底側の壁部すなわち基板部25の端子挿通孔(図示せず)を経てコネクタ嵌合室26内に突出する。
【0024】
各端子5は図2に示す如く、バスバー4から垂直に且つバスバー4と同一の幅寸法で立ち上げられた平板状の幅広部38と、幅広部38の先端側の両側に形成されたテーパ状(傾斜状)の一対の傾斜部(当接段部)36と、傾斜部36に続き、幅広部38と同一中心線上に延びる矩形ピン状の幅狭部37とで構成されている。
【0025】
本例の端子5の幅広部38は端子5の全長の半分以下の長さに形成され、幅広部38の幅寸法は従来の図10の端子の幅広部の幅寸法と同程度である。幅広部38は端子5の付根側すなわちバスバー4から立ち上がって直ぐの部分に位置してもよい。幅広部38の長さL1 はバスバー4からハウジング部10やコネクタハウジング部11,24(図1)までの高さによって適宜設定される。
【0026】
テーパ状の一対の傾斜部36は外側を向いて且つ左右対称に位置しており、左右同一角度のテーパ状の傾斜面で構成されている。傾斜部36の傾斜角度θ1 は一例として30〜45°程度である。ここで傾斜角度θ1 とは端子5の中心線40に対する角度を言う。傾斜角度θ1 が30°程度と小さい方がくさび作用によってハウジング部10やコネクタハウジング部11,24(図1)の後述するテーパ状の位置決め段部に対する密着性が高まり、より確実な位置決め性が発揮される。
【0027】
傾斜部36は湾曲のない平坦な傾斜面である。傾斜部36の一端(上端)は幅狭部37の側面37aに続き、傾斜部36の他端(下端)は幅広部38の側面38aに続いている。幅広部38の側面38aはバスバー4の側面4aに直交して続いている。傾斜部36の長さ(高さ)L2 は本例で幅広部38の長さL1 よりも短いが、従来例(図10)の如く端子5の付根(折曲部41)付近から直に傾斜部36を形成することも可能である。傾斜部36の位置はバスバー4からハウジング部10の上側の壁部42(図3)やコネクタハウジング部11,24の底側の壁部42(図3)までの高さによって決定されることは言うまでもない。説明の便宜上、壁部42の符号を共通で使用する。
【0028】
幅狭部37は本例で幅広部38の半分程度の幅寸法に形成され、幅狭部37の長さは幅広部38よりも長い。幅狭部37の長さは端子5の全長と幅広部38の長さL1 によって決定される。幅広部38と幅狭部37との中心線(軸心)は一致しており、幅狭部37の側面37aは幅広部38の側面38aと平行である。両側面37aは平行であり、両側面38aは平行である。幅狭部37の先端側には、相手側の雌型の端子(図示せず)に対する挿入ガイド用の傾斜面43が形成されている。雌型の端子(図示せず)はワイヤハーネス側の雄型のコネクタ(図示せず)の内部に収容されている。
【0029】
図1のコネクタハウジング部11,24の底側の壁部42(図3)やハウジング部10の上側の壁部42(図3)に端子挿通孔22(図3)が形成され、各端子挿通孔22の内部に、端子5の一対の傾斜部36に対するテーパ状の一対の位置決め段部44が形成されている。説明の便宜上、端子挿通孔22の符号を共通で使用する。端子挿通孔22は、図1のハウジング部10に示した如く平面視又は横断面で矩形スリット状(長方形状)を呈しており、図3の如く、端子5の幅狭部37を挿通させる幅狭部45と、端子5の傾斜部36を当接させるテーパ状(傾斜状)の位置決め段部44と、端子5の幅広部38を位置(収容)させる幅広部46とで構成されている。
【0030】
端子挿通孔22の幅狭部45の幅寸法は端子5の幅狭部37よりも若干広く、幅広部46の幅寸法は端子5の幅広部38よりも若干広く設定され、端子5を容易に且つスムーズに挿通可能である。位置決め段部44は端子5の傾斜部36に対応し、端子挿通孔22の中心線40に対して左右一対対称に形成されている。位置決め段部44の傾斜角度θ2 は端子挿通孔22の中心線40を基準とするものであり、端子5の傾斜部36の傾斜角度θ1 と同一角度に設定されている。
【0031】
位置決め段部44は平坦な傾斜面で構成されている。位置決め段部44の一端(上端)は幅狭部45の側面に続き、位置決め段部44の他端(下端)は幅広部46の側面に続いている。幅狭部45の両側面は対向して平行に位置し、幅広部46の両側面は対向して平行に位置している。幅狭部45は壁部42の上端面42aに直交して続き、幅広部44は壁部42の下端面42bに直交して続いている。壁部42は言うまでもなくコネクタハウジング部11,24(図1)の底壁やハウジング部10(図1)の上壁のことである。
【0032】
図1のロアケース2をアッパケース1に組み付けると同時に、あるいはサブ基板6をアッパケース1に組み付けると共に、ロアケース2をアッパケース1に組み付けることにより、図3の端子5の幅狭部37が、図4の如く壁部42の端子挿通孔22の幅狭部45内に完全に挿入されて壁部42上に長く突出し、それと同時に端子5の一対の傾斜部36が端子挿通孔22の一対の傾斜状の位置決め段部44に隙間なく当接する。すなわち、端子5の傾斜部36である両側の傾斜面が端子挿通孔22内の位置決め段部44である両側の傾斜面に隙間なく密着する。
【0033】
それにより、端子5の幅狭部37の矢印イ方向の振れ(幅方向の位置ずれ)が矯正され、端子5の中心線(軸心)40と端子挿通孔22の中心線とが完全に一致する。それにより、端子5とワイヤハーネス側のコネクタ内の雌型の端子(図示せず)との挿入接続や、端子5とヒューズ等の電気部品の端子(図示せず)との挿入接続がスムーズ且つ確実に行われる。雄雌の端子相互の衝突や端子5とワイヤハーネス側のコネクタハウジングの前端との衝突が防止されるから、端子5の変形や損傷が起こらない。
【0034】
なお、上記実施例においては端子5を上向きに突出させたが、図1のロアケース2の底側の壁部にコネクタハウジング部(図示せず)を設け、端子5を底側の壁部から下向きに突出させてコネクタハウジング部内に位置させることも可能である。その場合も、コネクタハウジング部の底側の壁部(ロアケース2の底壁)に端子挿通孔22を設け、端子挿通孔22に前記同様のテーパ状の位置決め段部44を設けることは言うまでもない。
【0035】
また、上記実施例の端子5はバスバー4と一体に形成されたものであるが、端子は必ずしもバスバーの端子に限るものではなく、一方にタブ状(板状)の電気接触部(上記の端子5に相当)、他方に電線圧着部をそれぞれ有する通常の雄型の端子(図示せず)を雌型のコネクタハウジング(図示せず)に挿着するワイヤハーネス構造においても本発明の構成を適用可能である。また、上記実施例における雄型の端子5が一方に形成され、雌型の端子が他方に形成された雄雌共有端子(図示せず)に本発明の構成を適用してもよい。
【0036】
【発明の効果】
以上の如く、本発明によれば、端子の幅狭部が端子挿通孔に挿入され、一対の傾斜部が壁部の位置決め段部に隙間なく密着することで、幅狭部の振れ(幅)方向の位置ずれ(倒れ)が修正され、幅狭部と端子挿通孔との中心線が一致して、幅狭部が端子挿通孔に対して倒れなく真直に位置決めされる。これにより、幅狭部と相手側端子や相手側コネクタとの干渉や衝突が防止され、幅狭部の変形や損傷がなくなり、端子相互の挿入及び接続が極めてスムーズに行われる。これは特に幅の狭い端子において有効であり、端子の倒れが極めて小さくなるから、端子間ピッチを狭めることができ、多極型のコネクタのコンパクト化が可能となる。
【0037】
また、バスバー回路板上で幅狭なバスバーの姿勢が不安定になった場合、端子の倒れが矯正されて上記の如く端子が真直に位置するから、幅狭なバスバーを問題なく使用でき、バスバー回路板の回路が高密度化され、あるいはバスバー回路板がコンパクト化される。また、接続箱本体のハウジング部やコネクタハウジング部内に多数本の端子が倒れなく整然と位置決めされるから、ハウジング部に対する電気部品等の接続や、外部ワイヤハーネスのコネクタ部とコネクタハウジング部との嵌合接続がスムーズに行われる。また、コネクタハウジング内の端子間ピッチの縮小化により、電気接続箱のコネクタの多極化やコンパクト化が可能となり、前記バスバー回路板のコンパクト化と併せて電気接続箱の小型化が図られる。
【図面の簡単な説明】
【図1】本発明に係る端子の位置決め構造を適用した電気接続箱の一例を示す分解斜視図である。
【図2】端子の一例を示す斜視図である。
【図3】端子を壁部の端子挿通孔に挿入する状態を示す縦断面図である(壁部のみを断面としている)。
【図4】同じく端子の位置決めが行われた状態を示す縦断面図である。
【図5】従来の電気接続箱を示す上面図である。
【図6】従来の電気接続箱を示す下面図である。
【図7】従来の電気接続箱におけるコネクタの一例を示す平面図である。
【図8】図7のコネクタに使用する従来の端子の一例を示す斜視図である。
【図9】従来の電気接続箱における多極型のコネクタの一例を示す平面図である。
【図10】図9のコネクタに使用する従来の端子の一例を示す斜視図である。
【符号の説明】
1 アッパケース(接続箱本体)
3 バスバー回路板
4 バスバー
5 端子
22 端子挿通孔
36 傾斜部
37 幅狭部
38 幅広部
42 壁部
44 位置決め段部
θ1 ,θ2 傾斜角度
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a terminal positioning structure in which, for example, the positions of terminals when a male terminal in a connector portion of an electrical junction box is narrowed and arranged at a narrow pitch are accurately defined without deviation (swing) in the width direction. It is.
[0002]
[Prior art]
5 to 6 show an example of an electrical junction box having a conventional terminal.
The electrical connection box 51 includes a synthetic resin upper case 52 (FIG. 5), a lower case 53 (FIG. 6), and a bus bar circuit board (not shown) housed in the lower case 53. The upper case 52 and the lower case 53 constitute a junction box body.
[0003]
As shown in FIG. 5, a plurality of fuses 54 are arranged in parallel in the upper case 52, and a female type including a male type terminal 57 raised integrally from a bus bar (not shown) on a bus bar circuit board. The connector 55 is provided. The connector 55 includes a female connector housing 56 formed integrally with the upper case 52, and the terminal 57 protruding into the connector fitting chamber 58 of the connector housing 56. A bracket 59 for fixing to the vehicle body projects from the outer periphery of the upper case 52.
[0004]
As shown in FIG. 6, the lower case 53 is provided with a plurality of female connectors 60 and relay connection portions 61. As described above, the female connector 60 is formed by housing the male terminal 62 formed integrally with the bus bar of the bus bar circuit board (not shown) in the connector housing 63.
[0005]
A plurality of bus bar circuit boards (not shown) are laminated, and the bus bar terminals of the intermediate bus bar circuit board pass through the upper or lower bus bar circuit board and project into the connector housings 56 (FIG. 5) and 63. A bus bar circuit board (not shown) is composed of a substrate portion made of insulating resin and bus bars arranged in various circuit shapes on the surface of the substrate portion.
[0006]
As shown in FIG. 7 as an example of the connectors 55, 60, the bottom wall 66 of the connector 65 is located on the same plane as the walls of the upper case 52 (FIG. 5) or the lower case 53 (FIG. 6). A plurality of elongated rectangular terminal insertion holes 67 are provided in parallel in two rows, and the male terminals 68 of each bus bar project through the terminal insertion holes 67 into the connector housing 69 made of synthetic resin.
[0007]
As shown in the terminal 68 of the bus bar 70 in FIG. 8, the terminal 68 is bent up at a right angle from the terminal portion or the middle portion of the bus bar 70, rises or hangs down, and protrudes with the same width as the bus bar 70. At the distal end portion of the terminal 68, there is formed a guide inclined surface 71 for introduction into the terminal insertion hole 67 of the bottom wall 66 of the connector housing 69 (FIG. 7) and a female terminal (not shown) on the other side. . The bus bar 70 continues long in a substantially strip shape or is bent into a required pattern on one plane.
[0008]
The width of the bus bar 70 and the terminal 68 is relatively wide, the bus bar 70 has good stability on the bus bar circuit board, and the dimensional variation S 3 of the terminal 68 in the swing direction (arrow B direction) is also kept relatively small. It has been. However, since the width S 1 of the terminal 68 is wide, the inter-terminal pitch P 1 in the connector 65 (FIG. 7) is increased, and the number of terminals 68 is limited to a small number. As the number of components and electronic components increases, it is necessary to increase the number of terminals 68 of the connector 65.
[0009]
FIG. 9 shows an example of a multipolar connector 74 in which male terminals 73 are accommodated in the connector housing 72 at a high density.
In this connector 74, as shown in FIG. 10, the width of the bus bar 75 in the electrical connection box is narrowed, and only the base (base side) of the terminal 73 is formed to have the same width as the bus bar 75. Is made narrower than the base, and the inter-terminal pitch P 2 in the connector fitting chamber 76 of the female connector housing 72 (FIG. 9) is reduced. The width dimension S 1 of the terminal 71 (FIG. 8) of the previous example is 2.3 mm as an example, whereas the width dimension S 2 of the terminal 73 (FIG. 10) of this example is about 1.0 mm.
[0010]
[Problems to be solved by the invention]
However, in the conventional multipolar connector 74 (FIG. 9), since the width of the bus bar 75 is narrow as shown in FIG. easily shake becomes large, the dimensional variation S 4 shake direction (width direction) is an example comparable with size variation S 3 in FIG. 8, the female terminal of the mating connector (not shown) Since the opening area of the electrical contact portion (not shown) is inevitably small, the insertability with respect to the mating terminal is deteriorated, and the male and female connectors are not smoothly fitted to each other. The resultant force (insertion force) increases, and in the worst case, the male and female terminals or the male terminal 73 collides with the front end portion of the mating connector housing, and the terminal 73 is deformed or damaged. There was concern to do. Further, before the connector is fitted, there is a concern that the adjacent male terminals 73 may come into contact with each other because the inter-terminal pitch P 2 is narrow.
[0011]
In view of the above, the present invention suppresses dimensional variations in the swing direction (width direction) of narrow terminals as much as possible, eliminates interference between terminals and between the terminals and the mating connector housing, and ensures a smooth and reliable connector. It is an object of the present invention to provide a terminal positioning structure that can be fitted.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the terminal positioning structure according to the present invention is such that a bus bar circuit board is accommodated in a junction box body, a plurality of bus bars are disposed on the surface of the bus bar circuit board, and terminals are provided on the bus bar. are raised formed up integrally with the wide portion and the narrow portion is formed on the terminal, it is formed a pair of inclined portions between the width wide portion and the width narrow portion, the junction box body and connection box on the body of the wall portion of the housing portion of the sub-substrate, terminal insertion holes are formed for the terminal, to the terminal insertion hole, a pair of positioning step the same inclination angle with said pair of inclined portions are formed, the bus bar is the The pair of inclined portions are in contact with the pair of positioning step portions while being supported on the surface of the bus bar circuit board .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Specific examples of embodiments of the present invention will be described below in detail with reference to the drawings.
FIG. 1 shows an example of an electrical junction box having a terminal positioning structure according to the present invention.
[0014]
The electrical junction box A is integrally formed upward from a synthetic resin upper case 1 and lower case 2, a plurality of bus bar circuit boards 3 stacked and accommodated in the lower case 2, and the bus bar 4 of each bus bar circuit board 3. A plurality of male terminals 5 (5 1 , 5 2 , 5 3 ) projecting on the sub-board 6, a sub-board 6 disposed on one half (left half in the figure) of the upper case 1, and a sub-board 6 and a cover 7 made of synthetic resin. Upper case 1 and lower case 2 are junction box bodies.
[0015]
The upper case (junction box main body) 1 includes a horizontal base wall portions 8 and 9, a peripheral wall portion 19 formed on the outer periphery of the base wall portion 8, and a housing portion 10 and an opening disposed on the base wall portion 8. And a connector housing portion 11 and a fuse insertion portion 12 disposed on the base wall portion 9.
[0016]
The peripheral wall portion 19 is provided with a bracket 14 for fixing to the vehicle body and the like, and a fixing portion 15 for electric parts (not shown). The base wall portion 8 is located at an intermediate portion in the height direction of the peripheral wall portion 19, and housing spaces 16 and 17 are formed above and below the base wall portion 8.
[0017]
A large female connector housing portion 11 is provided in the upper right half of the upper case 1, and a small and elongated rectangular block-shaped housing portion 10 and a plurality of parallel rectangular openings 13 are provided in the left half. And are provided. The left half portion of the upper case 1 is surrounded by a frame-shaped peripheral wall portion 19, and the housing portion 10 is positioned so as to protrude low in the accommodation space 16 inside the peripheral wall portion 19. Support portions 18 are formed at almost the same height as the housing portion 10 at the four corners of the accommodation space 16, and the sub-board 6 can be placed on the support portion 18. Fixing bolt holes 20 and 21 are formed in the support portion 18 and the sub-board 6.
[0018]
The connector housing part 11 has a connector fitting chamber 21 for a male connector part (not shown) on the wire harness side. A plurality of terminal insertion holes (not shown) are formed in parallel on the bottom wall portion (not shown) of the connector housing portion 11. A plurality of rectangular slit-shaped terminal insertion holes 22 are formed in the block-shaped housing portion 10 in parallel. The terminal insertion hole terminals 5 1 male of the lower case side from below can be inserted.
[0019]
The sub-board 6 is provided with a relay terminal 23 located above the housing part 10 and a medium-sized female connector housing part 24 located above the required opening 13. The sub board 6 is composed of a horizontal board part 25 made of insulating resin, the relay terminal 23 and each connector housing part 24. Relay terminal 23 is formed in a substantially rectangular tubular, inside a resilient contact piece (not shown), it is possible to insert the terminals 5 1 of the male from below. Each connector housing portion 24 has a connector fitting chamber 26 for a male connector portion (not shown) on the wire harness side. The bottom wall portion of the connector housing portion 24 also serves as the substrate portion 25, and a plurality of terminal insertion holes (not shown) are formed in parallel on the substrate portion 25.
[0020]
The sub-board 6 is disposed in the accommodation space 16 on the upper side of the upper case 1, and the cover 7 is covered on the upper case 1 from above the sub-board 6. The cover 7 has openings 27 and 28 for the connector housing portion 24 and the terminal protection portion 23 on the sub-board 6 side. A connector portion (not shown) on the wire harness side is inserted into the connector housing portion 24 from the opening portion 27, and a terminal of a fuse (not shown), for example, is inserted into the relay terminal 23 from the opening portion 28. The cover 7 is fixed by a locking claw 29 on the upper case side.
[0021]
The lower case 2 includes a frame-shaped peripheral wall 30 and a bottom wall (not shown). The peripheral wall 30 includes a locking projection 31 and a positioning portion 32 for the upper case 1. A plurality of bus bar circuit boards 3 are stacked on the lower case 2. Each bus bar circuit board 3 has a plurality of bus bars 4 having a required circuit pattern on the surface side of a substrate portion 33 made of an insulating resin, and the male terminal 5 1 is connected to a terminal portion or an intermediate portion of each bus bar 4. 5 3 is bent upward are integrally formed. The male terminal (5) of the lower bus bar circuit board 3 projects upward through the rectangular slit-shaped hole 34 of the substrate part 33 of the upper bus bar circuit board 3. The lower case 2 is incorporated in the accommodation space 17 below the upper case 1.
[0022]
In the present invention, a pair of tapered inclined portions (contacting step portions) 36 are formed on both sides of the longitudinal direction intermediate portion of the terminals 5 (5 1 to 5 3 ) on the bus bar 4 side, and the inclined portions 36 are formed. The narrow portion 37 is the upper side, the lower side of the inclined portion 36 is the wide portion 38, and the pair of inclined portions 36 are the housing portion 10 of the upper case 1, the connector housing portion 11, or the connector housing portion 24 on the sub-board 6 side. A narrow terminal 5 (not shown in FIG. 1) is brought into contact with a tapered (inclined) positioning step portion (not shown in FIG. 1) in the terminal insertion holes 10 (not shown except for 10) of each wall portion. 5 1 -5 3 ) positioning is performed.
[0023]
Lower case terminal 5 1 2 side protrudes into the relay terminal 23 of the sub-board 6 through the terminal insertion hole 22 of the housing portion 10. Terminal 5 2 protrudes into the connector fitting chamber 11 through the bottom side of the wall portion terminal insertion hole of the connector housing portion 11 (not shown). Terminal 5 3 passes through the opening 13 of the base wall portion 8 of the upper case 1, the connector through the bottom side of the wall portion or the terminal insertion holes of the base plate 25 of the connector housing portion 24 of the sub-board 6 (not shown) fitted Project into the chamber 26.
[0024]
As shown in FIG. 2, each terminal 5 has a flat plate-like wide portion 38 that rises perpendicularly from the bus bar 4 and has the same width as the bus bar 4, and tapered shapes that are formed on both sides of the wide portion 38 on the tip side. It is composed of a pair of (inclined) inclined portions (contact step portions) 36, and following the inclined portion 36, a wide portion 38 and a rectangular pin-shaped narrow portion 37 extending on the same center line.
[0025]
The wide portion 38 of the terminal 5 of this example is formed to have a length less than half of the entire length of the terminal 5, and the width dimension of the wide portion 38 is about the same as the width dimension of the wide portion of the conventional terminal shown in FIG. The wide portion 38 may be located at the base side of the terminal 5, that is, the portion immediately rising from the bus bar 4. The length L 1 of the wide portion 38 is appropriately set depending on the height from the bus bar 4 to the housing portion 10 and the connector housing portions 11 and 24 (FIG. 1).
[0026]
The pair of tapered inclined portions 36 are located outwardly and symmetrically, and are composed of tapered inclined surfaces having the same left and right angles. The inclination angle θ 1 of the inclined portion 36 is about 30 to 45 ° as an example. Here, the inclination angle θ 1 is an angle with respect to the center line 40 of the terminal 5. When the inclination angle θ 1 is as small as about 30 °, the wedge action increases the adhesion of the housing portion 10 and the connector housing portions 11 and 24 (FIG. 1) to a tapered positioning step, which will be described later, and more reliable positioning is achieved. Demonstrated.
[0027]
The inclined portion 36 is a flat inclined surface having no curvature. One end (upper end) of the inclined portion 36 continues to the side surface 37 a of the narrow portion 37, and the other end (lower end) of the inclined portion 36 continues to the side surface 38 a of the wide portion 38. The side surface 38 a of the wide portion 38 continues perpendicular to the side surface 4 a of the bus bar 4. Length (height) L 2 of the inclined portion 36 is shorter than the length L 1 of the wide portion 38 in the present embodiment, conventional linear from near the base as terminal 5 (FIG. 10) (bent portion 41) It is also possible to form the inclined portion 36. The position of the inclined portion 36 is determined by the height from the bus bar 4 to the upper wall portion 42 (FIG. 3) of the housing portion 10 and the bottom wall portion 42 (FIG. 3) of the connector housing portions 11 and 24. Needless to say. For convenience of explanation, the reference numerals of the wall portions 42 are used in common.
[0028]
The narrow portion 37 is formed in a width dimension about half that of the wide portion 38 in this example, and the length of the narrow portion 37 is longer than that of the wide portion 38. The length of the narrow portion 37 is determined by the total length of the terminal 5 and the length L 1 of the wide portion 38. The center lines (axial centers) of the wide portion 38 and the narrow portion 37 coincide with each other, and the side surface 37 a of the narrow portion 37 is parallel to the side surface 38 a of the wide portion 38. Both side surfaces 37a are parallel, and both side surfaces 38a are parallel. On the distal end side of the narrow portion 37, an inclined surface 43 for insertion guide with respect to the mating female terminal (not shown) is formed. A female terminal (not shown) is housed inside a male connector (not shown) on the wire harness side.
[0029]
Terminal insertion holes 22 (FIG. 3) are formed in the bottom wall portion 42 (FIG. 3) of the connector housing portions 11 and 24 and the upper wall portion 42 (FIG. 3) of the housing portion 10 in FIG. Inside the hole 22, a pair of tapered positioning steps 44 for the pair of inclined portions 36 of the terminal 5 are formed. For convenience of explanation, the reference numerals of the terminal insertion holes 22 are commonly used. The terminal insertion hole 22 has a rectangular slit shape (rectangular shape) in a plan view or a cross section as shown in the housing portion 10 of FIG. 1, and has a width through which the narrow portion 37 of the terminal 5 is inserted as shown in FIG. The narrow portion 45, a tapered (inclined) positioning step portion 44 that contacts the inclined portion 36 of the terminal 5, and a wide portion 46 that positions (accommodates) the wide portion 38 of the terminal 5.
[0030]
The width dimension of the narrow portion 45 of the terminal insertion hole 22 is set slightly larger than the narrow portion 37 of the terminal 5, and the width dimension of the wide portion 46 is set slightly wider than the wide portion 38 of the terminal 5. And it can be inserted smoothly. The positioning step portion 44 corresponds to the inclined portion 36 of the terminal 5 and is formed symmetrically with respect to the center line 40 of the terminal insertion hole 22. The inclination angle θ 2 of the positioning step portion 44 is based on the center line 40 of the terminal insertion hole 22, and is set to the same angle as the inclination angle θ 1 of the inclined portion 36 of the terminal 5.
[0031]
The positioning step 44 is formed by a flat inclined surface. One end (upper end) of the positioning step portion 44 continues to the side surface of the narrow portion 45, and the other end (lower end) of the positioning step portion 44 continues to the side surface of the wide portion 46. Both side surfaces of the narrow portion 45 face each other in parallel, and both side surfaces of the wide portion 46 face each other in parallel. The narrow portion 45 continues perpendicular to the upper end surface 42 a of the wall portion 42, and the wide portion 44 continues perpendicular to the lower end surface 42 b of the wall portion 42. Needless to say, the wall portion 42 is the bottom wall of the connector housing portions 11 and 24 (FIG. 1) and the upper wall of the housing portion 10 (FIG. 1).
[0032]
At the same time that the lower case 2 of FIG. 1 is assembled to the upper case 1, or the sub-board 6 is assembled to the upper case 1, and the lower case 2 is assembled to the upper case 1, the narrow portion 37 of the terminal 5 of FIG. 4, it is completely inserted into the narrow portion 45 of the terminal insertion hole 22 of the wall portion 42 and protrudes long on the wall portion 42. At the same time, the pair of inclined portions 36 of the terminal 5 are paired with the pair of inclinations of the terminal insertion hole 22. It contacts with the positioning step part 44 of a shape without a gap. That is, the inclined surfaces on both sides, which are the inclined portions 36 of the terminal 5, are in close contact with the inclined surfaces on both sides, which are the positioning step portions 44 in the terminal insertion hole 22, without any gap.
[0033]
As a result, the deflection (width misalignment) in the direction of the arrow B of the narrow portion 37 of the terminal 5 is corrected, and the center line (axial center) 40 of the terminal 5 and the center line of the terminal insertion hole 22 are completely matched. To do. Thereby, the insertion connection between the terminal 5 and a female terminal (not shown) in the connector on the wire harness side, and the insertion connection between the terminal 5 and a terminal (not shown) of an electrical component such as a fuse are smooth and Surely done. Since the collision between the male and female terminals and the collision between the terminal 5 and the front end of the connector housing on the wire harness side are prevented, the terminal 5 is not deformed or damaged.
[0034]
In the above embodiment, the terminal 5 is projected upward, but a connector housing portion (not shown) is provided on the bottom wall portion of the lower case 2 in FIG. 1, and the terminal 5 is directed downward from the bottom wall portion. It is also possible to project in the connector housing part. Also in this case, it goes without saying that the terminal insertion hole 22 is provided in the bottom wall portion of the connector housing portion (the bottom wall of the lower case 2), and the same tapered positioning step 44 is provided in the terminal insertion hole 22.
[0035]
Further, the terminal 5 of the above embodiment is formed integrally with the bus bar 4, but the terminal is not necessarily limited to the terminal of the bus bar, and one of the tabs (plate-like) electrical contact portion (the above terminal) 5) and the wire harness structure in which a normal male terminal (not shown) having a wire crimping portion on the other side is inserted into a female connector housing (not shown) is also applied. Is possible. The configuration of the present invention may be applied to a male / female shared terminal (not shown) in which the male terminal 5 is formed on one side and the female terminal is formed on the other side.
[0036]
【The invention's effect】
As described above, according to the present invention , the narrow portion of the terminal is inserted into the terminal insertion hole, and the pair of inclined portions are in close contact with the positioning step portion of the wall portion, so that the deflection (width) of the narrow portion is reduced. The positional deviation (falling) in the direction is corrected, the center lines of the narrow portion and the terminal insertion hole are aligned, and the narrow portion is positioned straight without falling down with respect to the terminal insertion hole. Thereby, interference and a collision with a narrow part and the other party terminal and the other party connector are prevented, a deformation | transformation and damage of a narrow part are lost, and insertion and connection of terminals are performed extremely smoothly. This is particularly effective for narrow terminals, and the tilting of the terminals is extremely small. Therefore, the pitch between the terminals can be narrowed, and the multipolar connector can be made compact.
[0037]
Also, if it becomes unstable posture of the narrow busbar bus bar circuit board, because the inclination of the terminal as being corrected of the terminal is positioned straight, can be used without problems narrow busbar, The circuit of the bus bar circuit board is densified or the bus bar circuit board is made compact. In addition, since a large number of terminals are positioned in an orderly manner in the housing part and connector housing part of the junction box body, the electrical parts are connected to the housing part, and the connector part of the external wire harness and the connector housing part are fitted. Connection is made smoothly. Further, by reducing the pitch between the terminals in the connector housing, it is possible to make the connector of the electrical connection box multi-polar and compact, and to reduce the size of the electrical connection box together with the compactness of the bus bar circuit board.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an example of an electrical junction box to which a terminal positioning structure according to the present invention is applied.
FIG. 2 is a perspective view showing an example of a terminal.
FIG. 3 is a longitudinal sectional view showing a state where a terminal is inserted into a terminal insertion hole of a wall portion (only the wall portion is a cross section).
FIG. 4 is a longitudinal sectional view showing a state where the terminals are similarly positioned.
FIG. 5 is a top view showing a conventional electrical junction box.
FIG. 6 is a bottom view showing a conventional electrical junction box.
FIG. 7 is a plan view showing an example of a connector in a conventional electrical junction box.
8 is a perspective view showing an example of a conventional terminal used in the connector of FIG.
FIG. 9 is a plan view showing an example of a multipolar connector in a conventional electrical junction box.
10 is a perspective view showing an example of a conventional terminal used in the connector of FIG. 9. FIG.
[Explanation of symbols]
1 Upper case (connection box body)
3 Busbar circuit board 4 Busbar 5 Terminal 22 Terminal insertion hole 36 Inclined part 37 Narrow part 38 Wide part 42 Wall part 44 Positioning step part θ 1 , θ 2 Inclination angle

Claims (1)

接続箱本体内にバスバー回路板が収容され、該バスバー回路板の表面に複数本のバスバーが配置され、該バスバーに端子が一体に立ち上げ形成され、該端子に幅広部と幅狭部とが形成され、該幅広部と該幅狭部との間に一対の傾斜部が形成され、該接続箱本体や接続箱本体上のサブ基板のハウジング部の壁部に、該端子に対する端子挿通孔が形成され、該端子挿通孔に、該一対の傾斜部と同一傾斜角度の一対の位置決め段部が形成され、該バスバーが該バスバー回路板の表面で支持された状態で、該一対の傾斜部が該一対の位置決め段部に当接することを特徴とする端子の位置決め構造。 Is the bus bar circuit board in the connection box body is accommodated, is arranged a plurality of bus bars on the surface of the bus bar circuit board, the terminal to the busbar is formed up integrally, and a wide portion and a narrow portion to the terminal A pair of inclined portions are formed between the wide portion and the narrow portion, and a terminal insertion hole for the terminal is formed in the wall portion of the housing portion of the sub-board on the junction box body or the junction box body. is formed, in the terminal insertion hole, a pair of positioning step the same inclination angle with said pair of inclined portions are formed, in a state where the bus bar is supported on the surface of the bus bar circuit board, the pair of inclined portion A terminal positioning structure that abuts against the pair of positioning steps.
JP12832699A 1999-05-10 1999-05-10 Terminal positioning structure Expired - Lifetime JP3693150B2 (en)

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JP12832699A JP3693150B2 (en) 1999-05-10 1999-05-10 Terminal positioning structure

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Application Number Priority Date Filing Date Title
JP12832699A JP3693150B2 (en) 1999-05-10 1999-05-10 Terminal positioning structure

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JP2000323220A JP2000323220A (en) 2000-11-24
JP3693150B2 true JP3693150B2 (en) 2005-09-07

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4651092B2 (en) * 2005-06-23 2011-03-16 株式会社オートネットワーク技術研究所 Electrical junction box
JP5806128B2 (en) * 2012-01-17 2015-11-10 矢崎総業株式会社 Busbar assembly structure
JP5687751B1 (en) * 2013-10-31 2015-03-18 株式会社フジクラ Electronic junction box with electrical control unit
JP6534370B2 (en) * 2016-08-29 2019-06-26 矢崎総業株式会社 Pin terminal and connector
JP6756764B2 (en) 2018-03-30 2020-09-16 矢崎総業株式会社 Busbar parts, terminal blocks and in-vehicle equipment
JP7139997B2 (en) * 2019-02-25 2022-09-21 住友電装株式会社 electronic module

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