JP2004229471A

JP2004229471A - Branching connection box

Info

Publication number: JP2004229471A
Application number: JP2003017663A
Authority: JP
Inventors: Yasuhisa Tanaka; 靖久田中
Original assignee: Sumitomo Wiring Systems Ltd
Current assignee: Sumitomo Wiring Systems Ltd
Priority date: 2003-01-27
Filing date: 2003-01-27
Publication date: 2004-08-12

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of work processes, when a terminal member is connected and fixed to a printed circuit board and the like. <P>SOLUTION: The terminal member 15 is of a slim, vertical tab shape, comprising external terminal contact portions 15b, 15c branched into plural number, casing fixing portions 15d, 15e continuing to the external terminal contacting portions 15b, 15c at halfway positions, and conductor member contacting portions 15a continuing to the casing fixing portions 15d, 15e at the bottom root sides. Press-contacting portions 15a, whose right and left sides are both made to expand outward, are provided on the conductor member connecting portions 15a of the terminal member 15. Terminal holes 14b are provided to pass through the bottom wall 14a of a connector storing portion 14, provided in a casing 11. With a press-connecting hole 13b provided in the printed circuit board 13, the casing fixing portions 15d, 15e of the terminal member 15 are press-inserted and held into the terminal holes 14b, and the connecting portions 15a are press-inserted into the press-connecting holes 13b for electrical connection. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車のワイヤハーネスに接続される分岐接続箱に関し、詳しくは、分岐接続箱内に収容するプリント基板やバスバー等の導電材と端子材とを接続しているものである。
【０００２】
【従来の技術】
従来、特開平１０−２２３２８４号公報等で図１１に示すような電気接続箱が開示されており、電気接続箱１のケース５内にプリント基板４を収容し、該プリント基板３の導電路と他回路とを接続する場合、回路密度向上や外形肥大化を抑制するため、プリント基板４に穿設した貫通穴４ａに端子金具からなるコネクタ端子５ａの下部３ａを貫通させて垂直方向に組みつけ、プリント基板４の裏面側で半田Ｈにより固定すると共にプリント基板４の導電路と電気接続している。これら端子３はケース５のコネクタハウジング２の貫通穴２ａを通して突出させ、コネクタハウジング２内にワイヤハーネスの端末に接続した相手方コネクタ等を嵌合し、該相手方コネクタ等の雌端子あるいは圧接端子とコネクタ端子３の上部の雄端子部３ｂとを嵌合して電気接続している。
また、分岐接続箱のケース内部にバスバーを収容し、該バスバーに対して別個に形成したコネクタ端子を垂直方向に接続している場合もあり、この場合もバスバーに穿設した貫通穴にコネクタ端子３の下部３ａを通して半田接続している。
【０００３】
【特許文献】
特開平１０−２２３２８４号公報
【０００４】
【発明が解決しようとする課題】
しかしながら、図１１に示す構造によると、相手方コネクタの端子と嵌合する雄端子部３ａの数と同数のコネクタ端子３をプリント基板４の貫通穴４ａおよびコネクタハウジング２の貫通穴２ａに打ち込む作業を行わなければならないと共に、コネクタ端子３の数だけ半田Ｈ付け作業を行わねばならず、作業工数が増大する問題がある。
また、プリント基板４に対して垂直方向にコネクタ端子３を固定接続するために半田づけで行っているが、環境上の問題より鉛の使用低減化が要請されていることから、半田の鉛フリー化の開発が進められており、好ましくは半田を使用しない方が望ましい。
【０００５】
本発明は、上記問題に鑑みて為されたもので、コネクタ端子をプリント基板等に接続固定する際の作業工数を低減することなどを課題としている。
【０００６】
【課題を解決するための手段】
上記課題を解決するため、本発明は、ケース内部にプリント基板あるいはバスバーからなる導電材を収容し、該導電材にプレスフィット型の端子材の根元側を圧接固定して該端子材を垂直方向に立設している分岐接続箱であって、
上記端子材は、細長い垂直方向のタブ形状であって、上部側の外部端子接触部と、該外部端子接触部に連続する中間位置のケース固定部と、該ケース固定部に連続する下部根元側の導電材接触部とを備え、かつ、該端子材は１本の上記導電材接触部に対して複数本の上記外部端子接触部を分岐させて備え、
上記端子材の導電材接触部には左右両側部を外方へ拡幅させた圧接部を設けている一方、
上記ケースに設けたコネクタ収容部の底壁に端子穴を貫通して設けていると共に、上記導電材に圧接穴を設けておき、
上記端子材のケース固定部を上記端子穴に圧入保持していると共に、上記圧接部を上記導電材の圧接穴に圧入して電気接続していることを特徴とする分岐接続箱を提供している。
【０００７】
上記構成とすると、上記端子材は、１本の導電材接触部に対して複数本の上記外部端子接触部を分岐させているので、１つの端子材を上記コネクタ収容部の端子穴および上記導電材の圧接穴に貫通することで、複数の外部端子接触部を設定することができ、従来のように、外部端子接触部の数と同数の貫通作業を必要としないので、作業工数を低減させることができる。
また、上記端子材の下部根元側を拡幅させた導電材接触部である上記圧接部をプリント基板あるいはバスバーからなる導電材の圧接穴に圧入して電気接続および固定を行っているので、半田付け作業が不要になり作業工数をさらに低減することが可能になる。
【０００８】
さらに、導電材に穿設した圧接穴に上方より端子材を圧入固定できるため、導電材の中間部の任意の位置に端子材を垂直に接続でき、回路密度を高くした場合に十分に対応でき外形の肥大化を抑制できる。
なお、上記端子材の下部根元側の一部を左右両側に拡幅した圧接部は菱形形状とすると好適であり、また、該圧接部は叩き出しにより幅広とすることで他の部位よりも剛性を低下させ、所要の可撓性を持たせている。なお、幅方向の中央部に切れ目を設けて左右を分離させ、この分離させた部分を“く”の字状に拡幅さてもよい。
【０００９】
上記端子材は、上記１本の導電材接触部の上部で分岐させて、上記ケース固定部と外部端子接触部とを連続させた分岐部を備え、
上記端子材は上記導電材の圧接穴に上記圧接部を圧入接続させた状態でケースに下方より圧入して上記分岐させた外部端子接触部を上記コネクタ収容部に突出させている。
【００１０】
即ち、上記端子材は上部で複数の外部端子接触部を分岐した形状となっているため、先ず、下部側の圧接部をプリント基板の圧接穴に圧入接続させておき、その状態から端子材の外部端子接触部をコネクタ収容部の端子穴に下方より貫通して圧入すれば好適に分岐接続箱を組立することができる。
【００１１】
あるいは、上記端子材は、上記１本の導電材接触部に上記ケース固定部を連続させ、該ケース固定部の上部で外部端子接触部に分岐させ、
上記導電材をケース内部に固定した状態で、上記端子材を上記コネクタ収容部の端子穴を通して上記導電材の圧接穴へと圧入固定している。
【００１２】
このように、上記端子材がケース固定部の上部で複数の外部端子接触部に分岐させている場合は、上記プリント基板を内部に固定したケースの上方から端子材をコネクタ収容部の端子穴とプリント基板の圧接穴とに一括して貫通すれば作業性も良好となる。
【００１３】
ケース内部にプリント基板あるいはバスバーからなる導電材を収容し、該導電材に端子材の根元側を固定して該端子材を垂直方向に立設している分岐接続箱であって、
上記端子材は、細長い垂直方向のタブ形状であって、上部側の外部端子接触部と、該外部端子接触部に連続する中間位置のケース固定部と、該ケース固定部に連続する下部根元側の導電材接触部とからなり、かつ、該端子材は１本の上記導電材接触部に対して複数本の上記外部端子接触部を分岐させて備え、
上記ケースに設けたコネクタ収容部の底壁に端子穴を貫通して設けていると共に、上記導電材に貫通穴を設けておき、
上記端子材のケース固定部を上記端子穴に圧入保持していると共に、上記圧接部を上記導電材の貫通穴に挿入して半田づけして電気接続していることを特徴とする分岐接続箱を提供している。
【００１４】
上記構成とした場合も、上記端子材は、１本の導電材接触部に対して複数本の上記外部端子接触部を分岐させているので、１つの端子材を上記コネクタ収容部の端子穴および上記導電材の貫通穴に貫通することで、複数の外部端子接触部を設定することができ、従来のように、外部端子接触部の数と同数の貫通作業を必要としないので、作業工数を低減させることができる。
【００１５】
上記プリント基板では上記圧接穴の内周面全面から上記プリント基板の絶縁基板の裏面あるいは／および表面側の導電材と接合する位置にかけてメッキを施して導電部を設け、該導電部を介して上記端子材とプリント基板の導電材とを電気接続している。
上記メッキは銅メッキに錫メッキあるいは半田メッキを上塗りしている。
上記構成とすると、プリント基板の絶縁基板の表面あるいは裏面のいずれか一方あるいは両方に導電材からなる回路を設けた場合に、端子材と電気接続できる。
【００１６】
【発明の実施の形態】
以下、本発明の実施形態を図面を参照して説明する。
図１乃至図５は第１実施形態を示し、分岐接続箱１０は図１に示すようにアッパーケース１１に複数のコネクタ収容部１４を並列に設けた構成で、下部にロアケース１２を組つけている。
図２に示すように、ロアケース１２内にはプリント基板１３からなる導電材が配置され、プリント基板１３には分岐した端子材１５と分岐の無い端子材１６とが垂直方向に立設している。
【００１７】
分岐した端子材１５は、図３（Ａ）に示すように、導電性金属板からなる細長い平板状の下部根元側に圧接部（導電材接触部）１５ａを叩き出しにより幅広とした菱形形状に形成し、該圧接部の上方で分岐部１５ｆを設けることで、上部側となる外部端子接触部１５ｂ、１５ｃを２本突出させている。また、分岐部１５ｆの直上をケース固定部１５ｄ、１５ｅとしていると共に、１本の外部端子接触部１５ｂはケース固定部１５ｄおよび圧接部（導電材接触部）１５ａと上下同一線上に位置させている。
なお、端子材の変形例として、図３（Ｂ）に示すように、導電性金属板からなる細長い平板状の下部根元側に圧接部（導電材接触部）３０ａを叩き出しにより幅広とした菱形形状に形成し、圧接部３０ａの上方で分岐部３０ｆ、３０ｇを二又に設けて上部側となる外部端子接触部３０ｂ、３０ｃを２本突出させ、分岐部３０ｆ、３０ｇの直上をケース固定部３０ｄ、３０ｅとした形状としてもよい。
【００１８】
分岐の無い端子材１６は、導電性金属板からなる細長い平板状の下部根元側に圧接部（導電材接触部）１６ａを叩き出しにより幅広とした菱形形状に形成し、上部側を外部端子接触部１６ｂとしていると共に、圧接部１６ａと外部端子接触部１６ｂの間の中間部をケース固定部１６ｃとしている。
【００１９】
プリント基板１３は、図４に示すように、絶縁基板１３ａの表裏両面に導電路１７を導電材を貼着、接着あるいは印刷して設け、かつ、圧接穴１３ｂを所定ピッチをあけて穿設している。これら圧接穴１３ｂの内周面全面からプリント基板１３の表裏両面にかけて銅メッキを施すと共に該銅メッキの表面に錫メッキまたは半田メッキを施して導電部１８を設け、導電部１８の上下両端部１８ａを表裏両面の導電路１６と接合している。
なお、導電部１８の穴径は、端子材１５、１６の圧接部１５ａ、１６ａの最外径よりも狭幅としている。
【００２０】
アッパーケース１１には、コネクタ収容部１４の底壁１４ａに端子穴１４ｂを所定ピッチをあけて設けている。これら端子穴１４ｂは下方に配置されるプリント基板１３の圧接穴１３ｂと同一垂直線上に設けている。端子穴１４ｂの幅寸法は端子材１５、１６のケース固定部１５ｄ、１５ｅ、１６ｃの幅寸法と同等としている。
【００２１】
次に、分岐接続箱１０の組み立て手順は、先ず、冶具（図示せず）にセットされたプリント基板１３の圧接穴１３ｂに端子材１５、１６の下端側を圧入させて、圧接部（導電材接触部）１５ａ、１６ａを導電部１８に圧接接続する。そして、図２に示すように、この端子材１５、１６が接続されたプリント基板１３の上方よりアッパーケース１１を被せ、各外部端子接触部１５ｂ、１５ｃ、１６ｂを端子穴１４ｂに貫通し、水平方向の分岐部１５ｆを底壁１４ａの下面に当接させて、コネクタ収容部１４内に外部端子接触部１５ｂ、１５ｃ、１６ｂを突出させる。最後に、図５に示すように、ロアケース１２を下方から被せてプリント基板１３をロアケース１２内に収容している。
【００２２】
上記構成とすると、分岐した端子材１５は、１つの圧接部（導電材接触部）１５ａに対して複数本の外部端子接触部１５ｂ、１５ｃを分岐させているので、１つの端子材１５をプリント基板１３の圧接穴１３ｂに貫通することで、複数の外部端子接触部１５ｂ、１５ｃを設定することができ、従来のように、外部端子接触部の数と同数の貫通作業を必要としないので、作業工数を低減させることができる。
また、端子材１５、１６の下部根元側を拡幅させた圧接部１５ａをプリント基板１３の圧接穴１３ｂの導電部１８に圧入して電気接続および固定を行っているので、半田付け作業が不要になり作業工数をさらに低減することが可能になる。
さらに、プリント基板１３に穿設した圧接穴１３ｂに上方より端子材１５を圧入固定しており、プリント基板１３の回路部分の任意の位置に端子材１５を垂直に接続できるため、回路密度を高くした場合ても十分に対応可能で外形の肥大化を抑制できる。
【００２３】
なお、分岐した端子材１３の外部端子接触部１５ｂ、１５ｃの分岐数は２つに限られず、３つ以上分岐させてもよいことは言うまでもない。
また、プリント基板１３の代わりに導電性金属板からなるバスバーを用いていもよい。
さらに、端子材１３と電気接続するプリント基板１３は１層に限らず複数のプリント基板１３を積層してもよい。この場合、積層したプリント基板１３の垂直方向に連続した位置に圧接穴１３ｂを設けておき、これらタブ圧接穴１３ｂのメッキよりなる導電部１８を形成し、各プリント基板１３の回路である導電路１７と電気接続させておくと共に各層の導電部１８を接合しておくことにより、最上層のプリント基板１３の圧接穴１３ｂに端子材１５、１６の圧接部１５ａ、１６ａを圧入して接触させるだけで、複数枚のプリント基板１３の電気接続を図ることができる。さらに、積層したプリント基板１３のうち、端子材１５、１６と電気接続しないプリント基板１３があれば、圧接穴１３ｂの内面に設けた導電部１８とプリント基板１３の導電路１７とを接続させなければ良いだけである。
【００２４】
図６および図７は第２実施形態を示す。
第１実施形態との相違点は、端子材１５’のケース固定部を抜け止め突起１５ｄ’、１５ｅ’としている点である。
【００２５】
抜け止め突起１５ｄ’、１５ｅ’は、細幅の外部端子接触部１５ｂ’、１５ｃ’の下方で両側に突出させてケース固定部とし、抜き止め突起１５ｄ’、１５ｅ’は上向き三角形状とし、下端面を水平として上側に傾斜させ、樹脂成形品からなる端子穴１４ｂに食い込むことができるようにしている。
上記構成とすることで、端子材１５がアッパーケース１１に強固に固定され、外部端子接触部１５ｄ’、１５ｅ’に相手方コネクタ（図示せず）が嵌合された場合の負荷を吸収して、プリント基板１３と圧接部１５ａ’との接触部に該負荷が及ばないようにすることができる。
なお、他の構成は第１実施形態と同様であるため説明を省略する。
【００２６】
図８および図９は第３実施形態を示す。
第１実施形態との相違点は、分岐部１５ｆ”をコネクタ収容部１４の底壁１４ａ”の上側に設置している点である。
【００２７】
分岐した端子材１５”は、導電材接触部となる幅広の圧接部１５ａ”より上方で外部端子接触部１５ｂ”、１５ｃ”を分岐する分岐部１５ｆ”をケース固定部１５ｄ”の上方に設けている。
アッパーケース１１のコネクタ収容部１４の底壁１４ａ’には、端子材１５”、１６の数と同数の端子穴１４ｂ、１４ｂ’が穿設されていると共に、分岐した端子材１５”が貫通される端子穴１４ｂ’の上面側に水平方向に連続して、分岐部１５ｆ”が設置固定される凹部１４ｃ’が凹設されている。
【００２８】
次に、分岐接続箱１０’の組み立て手順は、先ず、図８に示すように、プリント基板１３の周縁をアッパーケース１１の側壁の下端面１１ａにネジ止めあるいは樹脂カシメ等で固定し、ロアケース１２内に収容固定する。
この状態から、図９に示すように、端子材１５”、１６を端子穴１４ｂ’と圧接穴１３ｂとに一括して貫通させ、圧接部１５ａ”をプリント基板１３の圧接穴１３ｂの導電部１８と圧接接続させると共に、ケース固定部１５ｆ”を端子穴１４ｂ’に配置させる。この時、端子材１５”の分岐部１５ｆ”は、コネクタ収容部１４の底壁１４ａ’の凹部１４ｃ’に嵌合して位置決めされるので、端子材１５”が回転してしまうことが防止できる。なお、凹部１４ｃ’の深さは、分岐部１５ｆ”がコネクタ収容部１４の底面１４ａ’から飛び出さないように設定している。
なお、他の構成は第１実施形態と同様であるため説明を省略する。
【００２９】
図１０は第４実施形態を示す。
第１実施形態との相違点は、端子材２５、２６の下部根元部の導電材接触部２５ａ、２６ａを幅広とせず、半田Ｈでプリント基板１３’に接続している点である。
【００３０】
分岐した端子材２５は、導電性金属板からなる細長い平板状の下部根元側を導電材接触部２５ａとし、導電材接触部２５ａの上方で分岐部２５ｆを設けて外部端子接触部２５ｂ、２５ｃを２本突出させている。また、分岐部２５ｆの直上をケース固定部２５ｄ、２５ｅとしている。
分岐の無い端子材２６は、導電性金属板からなる細長い平板状の下部根元側を導電材接触部２６ａとし、上部側を外部端子接触部２６ｂとしていると共に、導電材接触部２６ａと外部端子接触部２６ｂの間の中間部をケース固定部２６ｃとしている。
【００３１】
アッパーケース１１の端子穴１４ｂに端子材２５、２６の外部端子接触部２５ｂ、２５ｃ、２６ｂを貫通させてケース固定部２５ｄ、２５ｅ、２６ｃを端子穴に圧入し、水平方向の分岐部２５ｆを底壁１４ａの下面に当接させた状態で、コネクタ収容部１４内に外部端子接触部２５ｂ、２５ｃ、２６ｂを突出させる。
そして、端子材２５、２６の下端側の導電材接触部２６ａをプリント基板１３’の貫通穴１３ａ’に貫通させて、プリント基板１３’の下面で半田Ｈで接続し、ロアケース１２内に収容固定する。
【００３２】
上記構成とした場合も、分岐した端子材２５は、１本の導電材接触部２５ａに対して複数本の外部端子接触部２５ｂ、２５ｃを分岐させているので、１つの端子材２５をプリント基板１３’の貫通穴１３ｂ’に貫通することで、複数の外部端子接触部２５ｂ、２５ｃを設定することができ、従来のように、外部端子接触部と同数の貫通作業を必要としないので、作業工数を低減させることが可能になる。
【００３３】
【発明の効果】
以上の説明より明らかなように、本発明では、上記端子材は１本の導電材接触部に対して複数本の上記外部端子接触部を分岐させているので、１つの端子材を上記コネクタ収容部の端子穴および上記導電材の圧接穴に貫通することで、複数の外部端子接触部を設定することができ端子材の貫通回数が低減される。よって、作業工数を削減させることができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態の分岐接続箱の概略斜視図である。
【図２】図１のＩ−Ｉ線断面での分解断面図である。
【図３】端子材の側面図である。
【図４】圧接穴に端子材が圧入された状態を示す拡大断面図である。
【図５】図１のＩ−Ｉ線断面図である。
【図６】第２実施形態の端子材の側面図である。
【図７】端子材が圧接穴および端子穴に貫通された状態を示す拡大断面図である。
【図８】第３実施形態を示す分解断面図である。
【図９】第３実施形態を示す断面図である。
【図１０】第４実施形態を示す断面図である。
【図１１】従来例を示し、（Ａ）は断面図、（Ｂ）は要部上面図、（Ｃ）は要部断面図である。
【符号の説明】
１０分岐接続箱
１１アッパーケース
１２ロアケース
１３プリント基板
１３ｂ圧接穴
１４コネクタ収容部
１４ｂ端子穴
１５、１６端子材
１５ａ圧接部（導電材接触部）
１５ｂ、１５ｃ外部端子接触部
１５ｄ、１５ｅケース固定部
１５ｆ分岐部
１８導電部
Ｈ半田[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a branch junction box connected to a wire harness of an automobile, and more particularly, to connecting a terminal board with a conductive material such as a printed circuit board or a bus bar housed in the branch junction box.
[0002]
[Prior art]
Conventionally, an electric connection box as shown in FIG. 11 has been disclosed in Japanese Patent Application Laid-Open No. Hei 10-223284, etc., in which a printed circuit board 4 is accommodated in a case 5 of the electric connection box 1, and a conductive path of the printed circuit board 3 is formed. When connecting to another circuit, the lower part 3a of the connector terminal 5a made of a terminal fitting is penetrated into the through hole 4a formed in the printed circuit board 4 and vertically assembled in order to suppress an increase in circuit density and an increase in outer shape. On the back side of the printed circuit board 4, the printed circuit board 4 is fixed with solder H and is electrically connected to the conductive path of the printed circuit board 4. These terminals 3 are made to protrude through the through holes 2a of the connector housing 2 of the case 5, and a mating connector or the like connected to the terminal of the wire harness is fitted into the connector housing 2, and a female terminal or a press contact terminal of the mating connector or the like is connected to the connector. The male terminal portion 3b on the upper part of the terminal 3 is fitted and electrically connected.
In some cases, a bus bar is housed inside the case of the branch connection box, and a connector terminal separately formed for the bus bar is vertically connected to the bus bar. In this case as well, the connector terminal is inserted into a through hole formed in the bus bar. 3 is soldered through the lower portion 3a.
[0003]
[Patent Document]
JP-A-10-223284
[Problems to be solved by the invention]
However, according to the structure shown in FIG. 11, the operation of driving the same number of connector terminals 3 into the through holes 4a of the printed circuit board 4 and the through holes 2a of the connector housing 2 as the number of the male terminal portions 3a to be fitted with the terminals of the mating connector. In addition to this, there is a problem that the soldering work has to be performed by the number of the connector terminals 3 and the number of working steps increases.
In addition, soldering is performed to fix and connect the connector terminal 3 to the printed circuit board 4 in the vertical direction. However, due to environmental concerns, the use of lead is required to be reduced. Development is progressing, and it is preferable not to use solder.
[0005]
The present invention has been made in view of the above problems, and has as its object to reduce the number of working steps when connecting and fixing a connector terminal to a printed circuit board or the like.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention is to accommodate a conductive material formed of a printed circuit board or a bus bar in a case, press-fit and fix a base of a press-fit type terminal material to the conductive material, and vertically align the terminal material. Branch junction box standing in the
The terminal material has an elongated vertical tab shape, and includes an upper external terminal contact portion, an intermediate position case fixing portion continuous with the external terminal contact portion, and a lower base side continuous with the case fixing portion. A conductive material contact portion, and the terminal material is provided with a plurality of the external terminal contact portions branched from one conductive material contact portion,
On the other hand, the contact portion of the conductive material of the terminal material is provided with a pressure contact portion in which both left and right sides are widened outward,
A terminal hole is provided through the bottom wall of the connector housing portion provided in the case, and a press-contact hole is provided in the conductive material,
A branch connection box, wherein the case fixing portion of the terminal material is press-fitted and held in the terminal hole, and the press-contact portion is press-fitted into the press-contact hole of the conductive material and electrically connected. I have.
[0007]
With the above configuration, the terminal material branches a plurality of the external terminal contact portions into one conductive material contact portion. Therefore, one terminal material is connected to the terminal hole of the connector accommodating portion and the conductive material. By penetrating through the pressure contact hole of the material, a plurality of external terminal contact portions can be set, and unlike the conventional case, the same number of external terminal contact portions as the penetrating work is not required, so that the number of work steps is reduced. be able to.
Also, since the press-contact portion, which is a conductive material contact portion in which the lower root side of the terminal material is widened, is pressed into a press-contact hole of a conductive material formed of a printed circuit board or a bus bar to perform electrical connection and fixation, soldering is performed. Work becomes unnecessary, and the number of work steps can be further reduced.
[0008]
Furthermore, since the terminal material can be press-fitted into the press-contact hole formed in the conductive material from above, the terminal material can be connected vertically to any position in the middle part of the conductive material, which can sufficiently cope with a high circuit density. Enlargement of the outer shape can be suppressed.
In addition, it is preferable that the pressure contact portion in which a part of the lower root side of the terminal material is widened to the left and right sides is formed in a rhombic shape, and the pressure contact portion is made wider by punching out to make it more rigid than other portions. To provide the required flexibility. Note that a cut may be provided at the center in the width direction to separate the left and right, and the separated portion may be widened in the shape of a “ku”.
[0009]
The terminal material is provided with a branch portion that is branched at an upper portion of the one conductive material contact portion to make the case fixing portion and the external terminal contact portion continuous.
The terminal material press-fits the case from below into the case with the press-contact portion being press-fitted into the press-contact hole of the conductive material, and the branched external terminal contact portion is projected into the connector accommodating portion.
[0010]
That is, since the terminal material has a shape in which a plurality of external terminal contact portions are branched at the upper portion, first, the press-contact portion on the lower side is press-fitted and connected to the press-contact hole of the printed circuit board. The branch connection box can be suitably assembled by press-fitting the external terminal contact portion into the terminal hole of the connector accommodating portion from below and press-fitting.
[0011]
Alternatively, the terminal material is such that the case fixing portion is connected to the one conductive material contact portion, and the terminal material branches to an external terminal contact portion above the case fixing portion,
In a state where the conductive material is fixed inside the case, the terminal material is press-fitted and fixed to the press-contact hole of the conductive material through the terminal hole of the connector accommodating portion.
[0012]
As described above, when the terminal material is branched into a plurality of external terminal contact portions at the upper portion of the case fixing portion, the terminal material is connected to the terminal hole of the connector accommodating portion from above the case where the printed circuit board is fixed inside. Workability is also improved by passing through the press-contact hole of the printed circuit board collectively.
[0013]
A branch connection box in which a conductive material formed of a printed circuit board or a bus bar is accommodated in a case, and the terminal material is fixed to the conductive material and the terminal material is vertically erected,
The terminal material has an elongated vertical tab shape, and has an upper external terminal contact portion, an intermediate position case fixing portion continuous with the external terminal contact portion, and a lower root side continuous with the case fixing portion. And the terminal member is provided with a plurality of the external terminal contact portions branched from one conductive material contact portion,
A terminal hole is provided through the bottom wall of the connector housing portion provided in the case, and a through hole is provided in the conductive material,
A branch connection box, wherein a case fixing portion of the terminal material is press-fitted and held in the terminal hole, and the press-contact portion is inserted into a through-hole of the conductive material, soldered, and electrically connected. Is provided.
[0014]
Also in the case of the above configuration, since the terminal material branches a plurality of the external terminal contact portions with respect to one conductive material contact portion, one terminal material is connected to the terminal hole of the connector accommodating portion. By penetrating through the through hole of the conductive material, a plurality of external terminal contact portions can be set, and unlike the conventional case, the same number of penetration operations as the number of external terminal contact portions is not required. Can be reduced.
[0015]
The printed circuit board is provided with a conductive portion by plating from the entire inner peripheral surface of the press-contact hole to a position to be joined to a conductive material on the back surface and / or the front surface side of the insulating substrate of the printed circuit board. The terminal material is electrically connected to the conductive material of the printed circuit board.
In the plating, copper plating is overcoated with tin plating or solder plating.
With the above configuration, when a circuit made of a conductive material is provided on one or both of the front surface and the back surface of the insulating substrate of the printed circuit board, the circuit can be electrically connected to the terminal material.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 to 5 show a first embodiment. A branch connection box 10 has a configuration in which a plurality of connector housings 14 are provided in parallel in an upper case 11 as shown in FIG. I have.
As shown in FIG. 2, a conductive material made of a printed board 13 is disposed in the lower case 12, and a branched terminal material 15 and a non-branched terminal material 16 are erected on the printed board 13 in the vertical direction. .
[0017]
As shown in FIG. 3 (A), the branched terminal material 15 has a rhombus shape in which a pressure contact portion (conductive material contact portion) 15a is widened by punching out a lower base side of an elongated flat plate made of a conductive metal plate. The external terminal contact portions 15b and 15c on the upper side protrude by providing the branch portion 15f above the pressure contact portion. The case fixing portions 15d and 15e are located immediately above the branch portion 15f, and one external terminal contact portion 15b is located on the same vertical line as the case fixing portion 15d and the pressure contact portion (conductive material contact portion) 15a. .
As a modified example of the terminal material, as shown in FIG. 3B, a rhombus in which a pressure contact portion (conductive material contact portion) 30a is widened by punching out a lower base side of an elongated flat plate made of a conductive metal plate. It is formed into a shape, and two branch portions 30f, 30g are provided on the press contact portion 30a to protrude two external terminal contact portions 30b, 30c on the upper side, and the case fixing portion is located just above the branch portions 30f, 30g. The shape may be 30d or 30e.
[0018]
The terminal material 16 having no branch is formed in a rhombus shape in which a pressure contact portion (conductive material contact portion) 16a is widened by punching out the lower base side of an elongated flat plate made of a conductive metal plate, and the upper side is connected to an external terminal. A portion 16b and an intermediate portion between the press contact portion 16a and the external terminal contact portion 16b are a case fixing portion 16c.
[0019]
As shown in FIG. 4, the printed circuit board 13 has conductive paths 17 provided on both sides of an insulating substrate 13a by sticking, bonding or printing a conductive material, and pressing holes 13b are formed at predetermined intervals. ing. Copper plating is applied from the entire inner peripheral surface of the press-contact hole 13b to the front and back surfaces of the printed circuit board 13, and a conductive portion 18 is provided by applying tin plating or solder plating to the surface of the copper plating, and upper and lower ends 18a of the conductive portion 18 are provided. Are connected to the conductive paths 16 on both front and back surfaces.
The hole diameter of the conductive portion 18 is smaller than the outermost diameter of the press contact portions 15a and 16a of the terminal members 15 and 16.
[0020]
In the upper case 11, terminal holes 14b are provided in the bottom wall 14a of the connector accommodating portion 14 at a predetermined pitch. These terminal holes 14b are provided on the same vertical line as the press-contact holes 13b of the printed circuit board 13 arranged below. The width of the terminal hole 14b is equal to the width of the case fixing portions 15d, 15e, and 16c of the terminal members 15 and 16.
[0021]
Next, the assembling procedure of the branch connection box 10 is as follows. First, the lower ends of the terminal members 15 and 16 are press-fitted into the press-contact holes 13b of the printed circuit board 13 set in a jig (not shown). The contact portions 15a and 16a are connected to the conductive portion 18 by press contact. Then, as shown in FIG. 2, the upper case 11 is covered from above the printed circuit board 13 to which the terminal members 15 and 16 are connected, and the external terminal contact portions 15b, 15c and 16b penetrate through the terminal holes 14b, and The direction branching portion 15f is brought into contact with the lower surface of the bottom wall 14a, and the external terminal contact portions 15b, 15c, 16b protrude into the connector accommodating portion 14. Finally, as shown in FIG. 5, the printed circuit board 13 is accommodated in the lower case 12 with the lower case 12 covered from below.
[0022]
With the above configuration, the branched terminal material 15 has a plurality of external terminal contact portions 15b and 15c branched from one press contact portion (conductive material contact portion) 15a, so that one terminal material 15 is printed. By penetrating the press-contact hole 13b of the substrate 13, a plurality of external terminal contact portions 15b and 15c can be set. Unlike the conventional case, the same number of external terminal contact portions as the penetrating work is not required. Work man-hours can be reduced.
Further, since the press contact portion 15a having the lower root sides of the terminal members 15 and 16 widened is press-fitted into the conductive portion 18 of the press contact hole 13b of the printed circuit board 13 to perform electrical connection and fixation, soldering work is unnecessary. Thus, the number of man-hours can be further reduced.
Further, the terminal material 15 is press-fitted and fixed from above into the press-contact hole 13b formed in the printed circuit board 13, and the terminal material 15 can be vertically connected to an arbitrary position of the circuit portion of the printed circuit board 13, thereby increasing the circuit density. In this case, it is possible to sufficiently cope with the problem and to suppress the enlargement of the outer shape.
[0023]
Note that the number of branches of the external terminal contact portions 15b and 15c of the branched terminal material 13 is not limited to two, and it goes without saying that three or more branches may be made.
Further, a bus bar made of a conductive metal plate may be used instead of the printed board 13.
Furthermore, the printed circuit board 13 electrically connected to the terminal material 13 is not limited to one layer, and a plurality of printed circuit boards 13 may be stacked. In this case, the press contact holes 13b are provided at positions that are continuous in the vertical direction of the stacked printed circuit boards 13, and the conductive portions 18 formed by plating these tab press contact holes 13b are formed. 17 and the conductive portions 18 of each layer are joined together, so that the press-contact portions 15a and 16a of the terminal members 15 and 16 are pressed into the press-contact holes 13b of the uppermost printed circuit board 13 and brought into contact therewith. Thus, the plurality of printed circuit boards 13 can be electrically connected. Furthermore, if there is a printed circuit board 13 that is not electrically connected to the terminal members 15 and 16 among the stacked printed circuit boards 13, the conductive portion 18 provided on the inner surface of the press-contact hole 13b and the conductive path 17 of the printed circuit board 13 must be connected. It's just good.
[0024]
6 and 7 show a second embodiment.
The difference from the first embodiment is that the case fixing portion of the terminal material 15 'is formed as retaining projections 15d' and 15e '.
[0025]
The retaining protrusions 15d 'and 15e' are projected to both sides below the narrow external terminal contact portions 15b 'and 15c' to serve as a case fixing portion. The retaining protrusions 15d 'and 15e' have an upwardly triangular shape. The end face is horizontal and inclined upward so that it can bite into the terminal hole 14b made of a resin molded product.
With the above configuration, the terminal material 15 is firmly fixed to the upper case 11, and absorbs the load when the mating connector (not shown) is fitted to the external terminal contact portions 15d 'and 15e', The load can be prevented from reaching the contact portion between the printed board 13 and the press contact portion 15a '.
Note that the other configuration is the same as that of the first embodiment, and the description is omitted.
[0026]
8 and 9 show a third embodiment.
The difference from the first embodiment is that the branch portion 15f ″ is installed above the bottom wall 14a ″ of the connector housing portion 14.
[0027]
The branched terminal material 15 "is provided with a branch portion 15f" that branches the external terminal contact portions 15b "and 15c" above the wide pressure contact portion 15a "serving as the conductive material contact portion, above the case fixing portion 15d". I have.
In the bottom wall 14a 'of the connector accommodating portion 14 of the upper case 11, the same number of terminal holes 14b and 14b' as the number of terminal materials 15 "and 16 are formed, and the branched terminal material 15" is penetrated. A concave portion 14c 'in which the branch portion 15f "is installed and fixed is formed in the upper surface of the terminal hole 14b'.
[0028]
Next, as shown in FIG. 8, the assembling procedure of the branch connection box 10 'is as follows. First, the periphery of the printed circuit board 13 is fixed to the lower end surface 11a of the side wall of the upper case 11 by screwing or resin caulking. Housed and fixed inside.
From this state, as shown in FIG. 9, the terminal members 15 ″ and 16 are collectively passed through the terminal holes 14 b ′ and the press-contact holes 13 b, and the press-contact portions 15 a ″ are connected to the conductive portions 18 of the press-contact holes 13 b of the printed circuit board 13. And the case fixing portion 15f "is disposed in the terminal hole 14b '. At this time, the branch portion 15f" of the terminal material 15 "fits into the concave portion 14c' of the bottom wall 14a 'of the connector accommodating portion 14. The terminal member 15 "can be prevented from rotating. The depth of the concave portion 14c 'is set so that the branch portion 15f "does not protrude from the bottom surface 14a' of the connector accommodating portion 14.
Note that the other configuration is the same as that of the first embodiment, and the description is omitted.
[0029]
FIG. 10 shows a fourth embodiment.
The difference from the first embodiment is that the conductive material contact portions 25a, 26a at the lower roots of the terminal materials 25, 26 are not widened but are connected to the printed circuit board 13 'by solder H.
[0030]
The branched terminal material 25 has an elongated flat plate-shaped lower base made of a conductive metal plate as a conductive material contact portion 25a, and a branch portion 25f provided above the conductive material contact portion 25a to form external terminal contact portions 25b and 25c. Two protruding. The case fixing portions 25d and 25e are located immediately above the branch portion 25f.
The terminal material 26 having no branch has an elongated flat plate-shaped lower portion made of a conductive metal plate as a conductive material contact portion 26a on the lower side and an external terminal contact portion 26b on the upper side, and has an external terminal contact portion with the conductive material contact portion 26a. An intermediate portion between the portions 26b is a case fixing portion 26c.
[0031]
The external terminal contact portions 25b, 25c, 26b of the terminal members 25, 26 penetrate through the terminal holes 14b of the upper case 11, and the case fixing portions 25d, 25e, 26c are pressed into the terminal holes, and the horizontal branch portion 25f is formed at the bottom. The external terminal contact portions 25b, 25c, and 26b protrude into the connector accommodating portion 14 in a state of being in contact with the lower surface of the wall 14a.
Then, the conductive material contact portions 26a on the lower ends of the terminal members 25 and 26 are passed through the through holes 13a 'of the printed circuit board 13', and are connected to the lower surface of the printed circuit board 13 'with solder H, and are accommodated and fixed in the lower case 12. I do.
[0032]
Also in the case of the above configuration, since the branched terminal material 25 branches a plurality of external terminal contact portions 25b and 25c with respect to one conductive material contact portion 25a, one terminal material 25 is connected to the printed circuit board. By penetrating through the through-hole 13b 'of 13', a plurality of external terminal contact portions 25b and 25c can be set. The number of steps can be reduced.
[0033]
【The invention's effect】
As is clear from the above description, in the present invention, the terminal material branches a plurality of the external terminal contact portions into one conductive material contact portion. By penetrating through the terminal hole of the portion and the pressure contact hole of the conductive material, a plurality of external terminal contact portions can be set, and the number of times the terminal material penetrates is reduced. Therefore, the number of work steps can be reduced.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a branch junction box according to a first embodiment of the present invention.
FIG. 2 is an exploded cross-sectional view taken along a line II in FIG. 1;
FIG. 3 is a side view of a terminal material.
FIG. 4 is an enlarged sectional view showing a state in which a terminal material is press-fitted into a press-contact hole.
FIG. 5 is a sectional view taken along line II of FIG. 1;
FIG. 6 is a side view of a terminal material according to a second embodiment.
FIG. 7 is an enlarged cross-sectional view showing a state in which the terminal material is penetrated through the press-contact hole and the terminal hole.
FIG. 8 is an exploded sectional view showing a third embodiment.
FIG. 9 is a sectional view showing a third embodiment.
FIG. 10 is a sectional view showing a fourth embodiment.
11A and 11B show a conventional example, wherein FIG. 11A is a cross-sectional view, FIG. 11B is a top view of a main part, and FIG. 11C is a cross-sectional view of a main part.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Branch connection box 11 Upper case 12 Lower case 13 Printed circuit board 13b Pressure contact hole 14 Connector accommodation part 14b Terminal hole 15, 16 Terminal material 15a Pressure contact part (conductive material contact part)
15b, 15c External terminal contact parts 15d, 15e Case fixing part 15f Branch part 18 Conductive part H Solder

Claims

A branch connection box in which a conductive material made of a printed circuit board or a bus bar is accommodated in a case, and the base side of a press-fit type terminal material is pressed and fixed to the conductive material to vertically stand the terminal material. hand,
The terminal material has an elongated vertical tab shape, and includes an upper external terminal contact portion, an intermediate position case fixing portion continuous with the external terminal contact portion, and a lower base side continuous with the case fixing portion. A conductive material contact portion, and the terminal material is provided with a plurality of the external terminal contact portions branched from one conductive material contact portion,
On the other hand, the contact portion of the conductive material of the terminal material is provided with a pressure contact portion in which both left and right sides are widened outward,
A terminal hole is provided through the bottom wall of the connector housing portion provided in the case, and a press-contact hole is provided in the conductive material,
A branch connection box, wherein a case fixing portion of the terminal material is press-fitted and held in the terminal hole, and the press-contact portion is press-fitted into a press-contact hole of the conductive material to be electrically connected.

The terminal material is provided with a branch portion that is branched at an upper portion of the one conductive material contact portion to make the case fixing portion and the external terminal contact portion continuous.
2. The terminal material according to claim 1, wherein the external terminal contact portion press-fits into the case from below in a state where the press-contact portion is press-fitted into the press-contact hole of the conductive material, and the branched external terminal contact portion protrudes into the connector housing portion. 3. Branch junction box as described.

The terminal material is such that the case fixing portion is continuous with the one conductive material contact portion, and is branched to an external terminal contact portion above the case fixing portion,
2. The branch connection box according to claim 1, wherein the terminal material is press-fitted into a press-contact hole of the conductive material through a terminal hole of the connector accommodating portion while the conductive material is fixed inside the case. 3.

A branch connection box in which a conductive material formed of a printed circuit board or a bus bar is accommodated in a case, and the terminal material is fixed to the conductive material and the terminal material is vertically erected,
The terminal material has an elongated vertical tab shape, and has an upper external terminal contact portion, an intermediate position case fixing portion continuous with the external terminal contact portion, and a lower root side continuous with the case fixing portion. And the terminal member is provided with a plurality of the external terminal contact portions branched from one conductive material contact portion,
A terminal hole is provided through the bottom wall of the connector housing portion provided in the case, and a through hole is provided in the conductive material,
A branch connection box, wherein a case fixing portion of the terminal material is press-fitted and held in the terminal hole, and the press-contact portion is inserted into a through-hole of the conductive material, soldered, and electrically connected. .