JP4334126B2 - Structure of fuse mounting part and electrical junction box in which this fuse mounting part is formed - Google Patents

Structure of fuse mounting part and electrical junction box in which this fuse mounting part is formed Download PDF

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Publication number
JP4334126B2
JP4334126B2 JP2000312085A JP2000312085A JP4334126B2 JP 4334126 B2 JP4334126 B2 JP 4334126B2 JP 2000312085 A JP2000312085 A JP 2000312085A JP 2000312085 A JP2000312085 A JP 2000312085A JP 4334126 B2 JP4334126 B2 JP 4334126B2
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Prior art keywords
fuse
insertion portion
stopper
mounting portion
pair
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JP2002124175A5 (en
JP2002124175A (en
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勝弘 久保田
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Yazaki Corp
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Yazaki Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H85/203—Bases for supporting the fuse; Separate parts thereof for fuses with blade type terminals
    • H01H85/2035—Bases for supporting the fuse; Separate parts thereof for fuses with blade type terminals for miniature fuses with parallel side contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H2085/2065—Bases for supporting the fuse; Separate parts thereof with base contacts adapted or adaptable to fuses of different lenghts; bases with self-aligning contacts; intermediate adaptation pieces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/20—Bases for supporting the fuse; Separate parts thereof
    • H01H2085/207—Bases adapted to fuses with different end contacts or to other components, e.g. circuit breakers; intermediate adaptation pieces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/0411—Miniature fuses
    • H01H85/0415—Miniature fuses cartridge type
    • H01H85/0417—Miniature fuses cartridge type with parallel side contacts

Description

【０００１】
【発明の属する技術分野】
本発明は、電気接続箱等のヒューズ装着部の構造に関し、さらに詳しくは異なる形状のヒューズを任意に装着することができるヒューズ装着部の構造及び及びこのヒューズ装着部が形成された電気接続箱に関する。
【０００２】
【従来の技術】
図１２は、従来のヒューズ５０と、このヒューズ５０のヒューズ装着部６０を示す。ヒューズ５０は、図１３に示すように、一対の平行な金属平板端子（以下、平板端子という）５１，５１の間に可溶部５２を設けることでヒューズエレメント５６を構成し、該ヒューズエレメント５６の基端側（可溶部５２を設けた一端側）を絶縁ハウジング５３内に収容したブレード型ヒューズである。
【０００３】
前記平板端子５１は、それぞれ絶縁ハウジング５３内に収容される端子本体５４と、該絶縁ハウジング５３から外方（図１３中の下方）に大きく突出するタブ端子部５５とからなる。前記可溶部５２は、これら平板端子５１，５１の対向する内側縁５４ａ，５４ａの間に横架するように、所定の断面積をもって設けられている。また、前記絶縁ハウジング５３には、左右両端側の前後両側下端縁にテーパ部５３ａ，５３ａが設けられている。
【０００４】
そして、前記ヒューズ５０は、図１４に示すように、電気接続箱等のヒューズ装着部６０に装着され、前記タブ端子部５５，５５が該ヒューズ装着部６０の相手側端子６１，６１に挟持固定されることにより、該相手側端子６１，６１に電気的に接続される。
【０００５】
ヒューズ装着部６０は、図１４に示すように、相手側端子６１，６１を挿入する左右一対の相手側端子挿入部６２，６２と、ヒューズ５０を挿入・嵌合するヒューズ挿入部６３と、ヒューズ５０の絶縁ハウジング５３を支持するヒューズガイド壁６４とを備えたフード部６５からなる。
【０００６】
前記ヒューズガイド壁６４は、ヒューズ５０の挿入時の挿入案内と共に装着後のヒューズ５０のブレ等を防止する。
【０００７】
また、フード部６５内には、装着されたヒューズ５０のタブ端子部５５，５５の間の電流リークを防止するため、絶縁壁６６が設けられている。該絶縁壁６６の上端は、装着されたヒューズ５０の絶縁ハウジング５３の下端縁と当接することで、ヒューズ装着部６０に対するヒューズ５０の位置決めを行なっている。
【０００８】
尚、前記相手側端子６１は、図１５に示すように、例えば、バスバーの一端部に端子片を形成すると共に、該端子片の伸延方向に穿設したＵ字形スロット６１ｂにより先割れした前記端子片の上端を互いに内側に向けて膨出させて一対の挟持部６１ａ，６１ａを形成した所謂、音叉形接続端子である。
【０００９】
【発明が解決しようとする課題】
ところが、上記従来のヒューズ５０では、ヒューズ装着部６０が前記ヒューズガイド壁６４や絶縁壁６６により、ヒューズ装着方向に沿った高さ寸法が大きくなるため、電気接続箱等の大型化を招くという問題があった。
【００１０】
また、前記ヒューズ５０をヒューズ装着部６０に装着する際には、前記ヒューズガイド壁６４や絶縁壁６６に囲まれた奥深い底部に位置する相手側端子６１の挟持部６１ａ，６１ａにタブ端子部５５を挟持させねばならないため、ヒューズ５０の挿入作業性も良くなかった。
【００１１】
そこで、ヒューズ装着部を小型化すると共にヒューズの挿入作業性を向上させる目的で、従来のヒューズ５０と異なる小型化したヒューズ１０が開発されている（本願出願人による特願平１２−１４３９５２号等）。
【００１２】
図１６に示したヒューズ１０は、一対の平板端子部１１，１１の間に可溶部１２が設けられたヒューズエレメント１５を絶縁ハウジング１３内に組付けてなるブレード型ヒューズである。
【００１３】
前記各平板端子部１１は、それぞれ略矩形状を有しており、これら平板端子部１１，１１の対向する内側縁１１ａ，１１ａの間に横架するように、前記可溶部１２が所定の断面積をもって設けられている。
【００１４】
前記絶縁ハウジング１３は、略Ｔ字状を有する一対のハウジング部材１４，１４からなり、前記ヒューズエレメント１５を板厚方向から挟むようにして一体に結合され、溶着固定されている。
【００１５】
これにより、ヒューズエレメント１５に取付けられた絶縁ハウジング１３が、可溶部１２と共に各平板端子部１１の内側縁１１ａ及び上端縁１１ｃを覆っている。そこで、ヒューズエレメント１５は、各平板端子部１１の外側縁１１ｄ及び下端縁１１ｅから前記可溶部１２の側方に位置する中間部位１１ｆにかけての表裏面領域以外が絶縁ハウジング１３に覆われる。
【００１６】
そして、前記各平板端子部１１の中間部位１１ｆが、後述する一実施形態に係るヒューズ装着部２０の相手側端子２１に挟持固定されることにより、該相手側端子２１に電気的に接続される。
【００１７】
尚、各平板端子部１１の中間部位１１ｆ，１１ｆの間のピッチＰは、従来のヒューズ５０のタブ端子部５５，５５の間のピッチＰと同等に形成されている。
【００１８】
また、前記絶縁ハウジング１３における各平板端子部１１の上端縁１１ｃを覆う部位には、治具係合用段部１４ａが設けられている。該治具係合用段部１４ａは、ヒューズ装着部２０に装着されたヒューズ１０を取り外す際、ヒューズ抜き取り工具（図示しない）が係合する部分である。
【００１９】
上記のヒューズ１０は、図１３に示した従来のヒューズ５０におけるタブ端子部５５のように、絶縁ハウジング１５から外方に大きく突出するタブ端子部がなくなり、ヒューズ１０自体が正面視略矩形状となっている。
【００２０】
ところで、従来のヒューズ装着部６０では、ヒューズエレメント５６の基端側を絶縁ハウジング５３内に収容し、タブ端子部５５が絶縁ハウジング５３から外方に大きく突出する従来のヒューズ５０に合わせた構造になっていたため、上記のようなヒューズ１０自体が正面視略矩形状となる形状のヒューズ１０を装着することができない。このため、各ヒューズの形状に合わせた専用のヒューズ装着部が設けられた電気接続箱等を製造しなければならない。
【００２１】
そこで、本発明は、形状が異なるヒューズを任意に装着可能な互換性を有すると共にヒューズの挿入作業性を向上することができるヒューズ装着部の構造及びこのヒューズ装着部が形成された電気接続箱の提供を目的とする。
【００２２】
【課題を解決するための手段】
上記課題を解決するために、請求項１記載の発明は、絶縁ハウジングから装着方向に一対のタブ端子が突出した第１のヒューズが挿入・嵌合されるヒューズ挿入部、このヒューズ挿入部内に設けられて前記一対のタブ端子部が接続される相手側端子と、ヒューズ挿入部内に設けられて前記第１のヒューズの挿入位置を規制する第１ストッパー部とを備えたヒューズ装着部の構造であって、絶縁ハウジングの両側に一対の平板端子部がそれぞれ設けられ該平板端子部間のピッチが前記一対のタブ端子部間のピッチと同寸法とされると共に前記ヒューズ挿入部内に挿入可能な第２のヒューズの挿入位置を規制し平板端子を前記相手側端子と接続する第２ストッパー部を前記ヒューズ挿入部に設けて、ヒューズ挿入部に前記第１のヒューズ、第２のヒューズをそれぞれ装着可能とし、前記第１ストッパー部が前記ヒューズ挿入部の上部位置に設けられて前記第１のヒューズのハウジングが前記ヒューズ挿入部から突出し、前記第２ストッパー部が前記ヒューズ挿入部の下部位置に設けられて第２のヒューズのハウジングが前記ヒューズ挿入部に埋没され、前記第１ストッパー部が、前記ヒューズ挿入部の対向する左右の内壁にそれぞれ設けられた一対のストッパー部材の上端に形成した互いに内側に向かう一対のテーパ部であり、該テーパ部に前記第１のヒューズの絶縁ハウジングに設けたテーパ部が当接することにより、前記ヒューズ挿入部に対する前記第１のヒューズの挿入位置を規制し、前記第２ストッパー部が、前記ヒューズ挿入部内に設けられた下部壁であり、該下部壁の上端に前記第２のヒューズの絶縁ハウジングの下端縁が当接することにより、前記ヒューズ挿入部に対する前記第２のヒューズの挿入位置を規制するようにしたことを特徴とする。
【００２３】
このヒューズ装着部の構造では、第１のヒューズを装着する場合には、第１ストッパー部によりヒューズ挿入部に対する挿入位置が規制され、タブ端子部を相手側端子に接続する。また、第２のヒューズを装着する場合には、第２ストッパー部によりヒューズ挿入部に対する挿入位置が規制され、平板端子部の中間部位が相手側端子と接続する。
【００２４】
従って、このヒューズ装着部の構造では、形状が異なる第１のヒューズと第２のヒューズとを任意に装着することができ、互換性をもたせることができる。
【００２５】
また、従来のヒューズ装着部に比べて、ヒューズ装着部の全高を低くすることができ、ヒューズの挿入作業性が向上する。
【００２７】
また、このヒューズ装着部の構造では、第１のヒューズを装着する場合には、ヒューズ挿入部の上部位置に設けられた第１ストッパー部でヒューズ挿入部に対する挿入位置が規制されるので、絶縁ハウジングから装着方向に突出した一対のタブ端子部を相手側端子が挟持固定する。また、第２のヒューズを装着する場合には、ヒューズ挿入部の下部位置に設けられた第２ストッパー部でヒューズ挿入部の挿入位置が規制されるので、一対の平板端子部の中間部位と相手側端子が接続する。
【００２８】
従って、このヒューズ装着部の構造では、ヒューズ装着部でのヒューズの支持バランスを良くすることができる。
【００３０】
また、このヒューズ装着部の構造では、第１のヒューズを装着する場合、第１のヒューズの絶縁ハウジングのテーパ部が、ヒューズ挿入部に設けたストッパー部材上端のテーパ部に当接することにより絶縁ハウジングの下端縁とストッパー部材の上端とがテーパ係合されることで、ヒューズ挿入部に対する第１のヒューズの挿入位置が確実に規制される。
【００３１】
従って、このヒューズ装着部の構造では、ヒューズ装着部での第１のヒューズの支持バランスをより一層良くすることができる。
【００３３】
また、このヒューズ装着部の構造では、第２のヒューズを装着する場合、第２のヒューズの絶縁ハウジングの下端縁が、ヒューズ挿入部内に設けた下部壁の上端に当接することで、ヒューズ挿入部に対する第２のヒューズの挿入位置が確実に規制される。
【００３４】
従って、このヒューズ装着部の構造では、ヒューズ装着部での第２の支持バランスをより一層良くすることができる。
請求項２記載の電気接続箱では、請求項１に記載されたヒューズ装着部の構造が上面側に一体に形成されていることを特徴とする。
この電気接続箱では、形状が異なる第１のヒューズと第２のヒューズとを任意に装着することができ、ヒューズ装着部に互換性を持たせることが可能となる。
また、ヒューズ装着部の全高を低くすることができる。さらに、ヒューズ装着部での支持バランスを良くすることができる。
【００３５】
【発明の実施の形態】
以下、本発明の一実施形態に係るヒューズ装着部の構造を図面に基づいて説明する。
【００３６】
図１は、本発明の一実施形態に係るヒューズ装着部と、このヒューズ装着部に装着される異なるヒューズを示す斜視図、図２は図１に示すヒューズ装着部の構造を示す平面図、図３は図２のＡ−Ａ線に沿う断面図、図４は図２のＢ−Ｂ線に沿う断面図である。
【００３７】
ヒューズ装着部２０は、図１〜図４に示すように、絶縁ハウジング５３から装着方向に一対のタブ端子５５、５５が突出した第１のヒューズ（図１３に示す従来のヒューズ）５０が挿入・嵌合されるヒューズ挿入部２３と、このヒューズ挿入部２３内に設けられて一対のタブ端子部５５、５５が接続される相手側端子２１、２１と、ヒューズ挿入部２３内に設けられて第１のヒューズ５０の挿入位置を規制する第１ストッパー部２５と、絶縁ハウジング５３が挿入・嵌合されるフード部２４とを備えている。
【００３８】
また、本実施形態のヒューズ装着部２０は、絶縁ハウジング１３の両側に一対の平板端子部１１、１１がそれぞれ設けられこの平板端子部１１、１１間のピッチが一対のタブ端子部５５、５５間のピッチと同寸法とされると共にヒューズ挿入部２３内に挿入可能な第２のヒューズ（図１６に示す小型のヒューズ）１０の挿入位置を規制し平板端子を相手側端子２１、２１と接続する第２ストッパー部２６を備えている。
【００３９】
フード部２４の上端部には、ヒューズ抜き取り治具（図示しない）を挿脱可能な治具抜き取り用切り欠き部２７が設けられている。また、フード部２４の上端縁部には、ヒューズ挿入部２３にヒューズを挿入・嵌合する際、第１のヒューズ５０の絶縁ハウジング５３及び第２のヒューズ１０の絶縁ハウジング１３を挿入案内する挿入案内部２８が設けられている。
【００４０】
前記第１のヒューズ５０の挿入位置を規制する第１ストッパー部２５は、フード部２４の対向する左右の壁部２４ｂ，２４ｂの内壁にそれぞれ一対のストッパー部材２９，２９を該壁部２４ｂと一体に設け、各ストッパー部材２９，２９の上端に互いに内側に向かう一対のテーパ部３０，３０を形成して構成されている。
【００４１】
そして、前記一対のテーパ部３０，３０に、第１のヒューズ５０の絶縁ハウジング５３の下端縁のテーパ部５３ａ，５３ａが当接することで、ヒューズ装着部２０に対する第１のヒューズ５０の挿入位置を規制する。
【００４２】
前記第２のヒューズ１０の挿入位置を規制する第２ストッパー部２６は、フード部２４内のヒューズ挿入部２３の下端部に設けられた下部壁３１からなる。
【００４３】
そして、前記下部壁３１の上端に、第２のヒューズ１０の絶縁ハウジング１３の下端縁が当接することで、ヒューズ装着部２０に対する第２のヒューズ１０の挿入位置を規制する。
【００４４】
前記挿入案内部２８は、フード部２４の対向する前後の壁部２４ａ，２４ａのそれぞれの上部を切り欠いて形成された凹部３２，３２のそれぞれの両端段部と、前後の壁部２４ａ，２４ａの上縁部及び左右の壁部２４ｂ，２４ｂの上縁部との間に形成された内側に向かう傾斜面３３及び３４からなる。
【００４５】
前記治具挿脱用切り欠き部２７は、フード部２４の左右の壁部２４ａ，２４ａに上端部に形成されている。
【００４６】
こうして、ヒューズ装着部２０は構成され、図５に示すように、電気接続箱３４の上面側に一体に成形される。
【００４７】
図６〜図８は、図１３に示した第１のヒューズ５０をヒューズ装着部２０に装着した状態を示す。
【００４８】
第１のヒューズ５０は、絶縁ハウジング５３の下端縁のテーパ部５３ｂ，５３ｂを、ヒューズ装着部２０の第１ストッパー部２５であるテーパ部３０，３０に当接させることにより、ヒューズ装着部２０に装着され、前記タブ端子部５５，５５がヒューズ装着部２０の相手側端子２１，２１に挟持固定されることにより、該相手側端子２１，２１に電気的に接続される。
【００４９】
前記相手側端子２１は、図８に示すように、例えばバスバーの一端部に端子片を形成すると共に、該端子片の伸延方向に沿って穿設したＵ字形スロット２１ｂにより先割れした前記端子片の上端を互いに内側に向けて膨出させて一対の挟持部２１ａ，２１ａを形成した所謂、音叉形接続端子である。
【００５０】
尚、前記ヒューズ装着部２０の第１ストッパー部３０，３０は、第１のヒューズ５０のタブ端子部５５，５５を相手側端子２１，２１に挟持固定させられるように、フード部２４の上部位置に設けられている。
【００５１】
図９〜図１１は、図１６に示した第２のヒューズ１０をヒューズ装着部２０に装着した状態を示す。
【００５２】
第２のヒューズ１０は、絶縁ハウジング１３の下端縁を、ヒューズ装着部２０の第２ストッパー部２６である下部壁３１の上端に当接させることにより、ヒューズ装着部２０に装着され、前記平板端子部１１，１１の中間部位１１ｆ，１１ｆがヒューズ装着部２０の相手側端子２１，２１に挟持固定されることにより、該相手側端子２１，２１に電気的に接続される。
【００５３】
前記相手側端子２１は、図１１に示すように、例えばバスバーの一端部に端子片を形成すると共に、該端子片の伸延方向に沿って穿設したＵ字形スリット２１ｂにより先割れした前記端子片の上端を互いに内側に向けて膨出させて一対の挟持部２１ａ，２１ａを形成した所謂、音叉形接続端子である。
【００５４】
尚、前記ヒューズ装着部２０の第２ストッパー部２６は、第２のヒューズ１０の平板端子部１１，１１の中間部位１１ｆ，１１ｆを相手側端子２１，２１に挟持固定させられるように、フード部２４の下部位置に設けられ、ヒューズ装着部２０に装着した第２のヒューズ１０が、該ヒューズ装着部２０のヒューズ挿入部２３内に埋没するようになっている。
【００５５】
上記一実施形態のヒューズ装着部２０によれば、図１に示すように、該ヒューズ装着部２０のヒューズ挿入部２３の上部位置に設けた第１ストッパー部２５で第１のヒューズ５０の挿入位置を規制すると共に、ヒューズ挿入部２３の下部位置に設けた第２ストッパー部２６で第２のヒューズ１０の挿入位置を規制することにより、第１のヒューズ５０と第２のヒューズ１０を任意に装着することができ、互換性をもたせることができる。
【００５６】
また、従来のヒューズ装着部６０に比べて、ヒューズ装着部２０の全高を低くでき、ヒューズ５０，１０の挿入作業性が向上する。
【００５７】
【発明の効果】
以上の説明により明らかなように、請求項１記載のヒューズ装着部の構造によれば、形状が異なる第１のヒューズと第２のヒューズとを任意に装着することができる。従って、ヒューズ装着部に互換性をもたせることが可能となる。
【００５８】
また、従来のヒューズ装着部に比べて、ヒューズ装着部の全高を低くすることができ、ヒューズの挿入作業性を向上させることができる。
【００５９】
また、ヒューズ装着部でのヒューズの支持バランスを良くすることができる。
【００６０】
また、このヒューズ装着部の構造によれば、ヒューズ装着部での第１のヒューズの支持バランスをより一層良くすることができる。
【００６１】
また、このヒューズ装着部の構造によれば、ヒューズ装着部での第２のヒューズの支持バランスをより一層良くすることができる。
請求項２記載の電気接続箱によれば、形状が異なる第１のヒューズと第２のヒューズとを任意に装着することができ、ヒューズ装着部に互換性を持たせることが可能となる。また、ヒューズ装着部の全高を低くすることができる。さらに、ヒューズ装着部での支持バランスを良くすることができる。
【図面の簡単な説明】
【図１】本発明の一実施形態に係るヒューズ装着部と、このヒューズ装着部に装着されるヒューズを示す斜視図である。
【図２】図１に示すヒューズ装着部の構造を示す平面図である。
【図３】図２のＡ−Ａ線に沿う断面図である。
【図４】図２のＢ−Ｂ線に沿う断面図である。
【図５】図１に示すヒューズ装着部を電気接続箱に設置した一例を示す斜視図である。
【図６】図１に示すヒューズ装着部に第１のヒューズ（図１３に示す従来例のヒューズ）を装着した状態を示す平面図である。
【図７】図６のＣ−Ｃ線に沿う断面図である。
【図８】図６のＤ−Ｄ線に沿う断面図である。
【図９】図１に示すヒューズ装着部に第２のヒューズ（図１６に示す新型ヒューズ）を装着した状態を示す平面図である。
【図１０】図９のＥ−Ｅ線に沿う断面図である。
【図１１】図９のＦ−Ｆ線に沿う断面図である。
【図１２】従来例のヒューズ（第１のヒューズ）と、このヒューズが装着される従来例のヒューズ装着部を示す斜視図である。
【図１３】図１２に示すヒューズの正面図である。
【図１４】図１２に示すヒューズをヒューズ装着部に装着した状態を示す正面断面図である。
【図１５】図１２に示すヒューズをヒューズ装着部に装着した状態を示す側面図である。
【図１６】新型のヒューズ（第２のヒューズ）の正面図である。
【符号の説明】
１０ 第２のヒューズ
１１ 平板端子部
１１ｆ 中間部位
１３ 絶縁ハウジング
２０ ヒューズ装着部
２１ 相手側端子
２２ 相手側端子挿入部
２３ ヒューズ挿入部
２５ 第１ストッパー部
２６ 第２ストッパー部
２９ ストッパー部材
３０ テーパ部
３１ 下壁部
５０ 第１のヒューズ
５１ 平板端子
５３ 絶縁ハウジング
５３ａ テーパ部
５５ タブ端子部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a fuse mounting portion such as an electric connection box, and more particularly to a structure of a fuse mounting portion that can arbitrarily mount a fuse having a different shape and an electric connection box in which the fuse mounting portion is formed. .
[0002]
[Prior art]
FIG. 12 shows a conventional fuse 50 and a fuse mounting portion 60 of the fuse 50. As shown in FIG. 13, the fuse 50 forms a fuse element 56 by providing a fusible portion 52 between a pair of parallel metal flat plate terminals (hereinafter referred to as flat plate terminals) 51, 51. This is a blade type fuse in which the base end side (one end side where the fusible portion 52 is provided) is housed in an insulating housing 53.
[0003]
Each of the flat terminals 51 includes a terminal main body 54 accommodated in the insulating housing 53 and a tab terminal portion 55 that largely protrudes outward (downward in FIG. 13) from the insulating housing 53. The fusible part 52 is provided with a predetermined cross-sectional area so as to be laid across between the inner edges 54a, 54a of the flat plate terminals 51, 51 facing each other. Further, the insulating housing 53 is provided with tapered portions 53a and 53a at lower end edges on both front and rear sides on both left and right ends.
[0004]
As shown in FIG. 14, the fuse 50 is mounted on a fuse mounting portion 60 such as an electric junction box, and the tab terminal portions 55 and 55 are clamped and fixed to the mating terminals 61 and 61 of the fuse mounting portion 60. By doing so, it is electrically connected to the counterpart terminals 61, 61.
[0005]
As shown in FIG. 14, the fuse mounting portion 60 includes a pair of left and right counterpart terminal insertion portions 62 and 62 into which the counterpart terminals 61 and 61 are inserted, a fuse insertion portion 63 into which the fuse 50 is inserted and fitted, and a fuse. The hood portion 65 includes a fuse guide wall 64 that supports 50 insulating housings 53.
[0006]
The fuse guide wall 64 prevents blurring of the fuse 50 after being mounted together with the insertion guide when the fuse 50 is inserted.
[0007]
Further, an insulating wall 66 is provided in the hood portion 65 in order to prevent current leakage between the tab terminal portions 55 and 55 of the mounted fuse 50. The upper end of the insulating wall 66 is in contact with the lower end edge of the insulating housing 53 of the mounted fuse 50, thereby positioning the fuse 50 with respect to the fuse mounting portion 60.
[0008]
As shown in FIG. 15, for example, the counterpart terminal 61 is formed with a terminal piece at one end of a bus bar, and the terminal is cracked by a U-shaped slot 61b formed in the extending direction of the terminal piece. This is a so-called tuning fork connection terminal in which a pair of clamping portions 61a and 61a are formed by bulging the upper ends of the pieces toward the inside.
[0009]
[Problems to be solved by the invention]
However, in the conventional fuse 50, the fuse mounting portion 60 is increased in height along the fuse mounting direction due to the fuse guide wall 64 and the insulating wall 66, so that the size of the electrical connection box or the like is increased. was there.
[0010]
Further, when the fuse 50 is mounted in the fuse mounting portion 60, the tab terminal portion 55 is provided in the clamping portions 61a and 61a of the mating terminal 61 located at the deep bottom surrounded by the fuse guide wall 64 and the insulating wall 66. Therefore, the workability of inserting the fuse 50 is not good.
[0011]
Therefore, for the purpose of downsizing the fuse mounting portion and improving the insertion workability of the fuse, a downsized fuse 10 different from the conventional fuse 50 has been developed (Japanese Patent Application No. 12-143952 by the applicant of the present application). ).
[0012]
The fuse 10 shown in FIG. 16 is a blade-type fuse in which a fuse element 15 having a fusible portion 12 provided between a pair of flat plate terminal portions 11 and 11 is assembled in an insulating housing 13.
[0013]
Each of the flat terminal portions 11 has a substantially rectangular shape, and the soluble portion 12 has a predetermined shape so as to be laid across between the opposing inner edges 11a, 11a of the flat terminal portions 11, 11. It is provided with a cross-sectional area.
[0014]
The insulating housing 13 includes a pair of housing members 14 and 14 having a substantially T-shape, and is integrally coupled and fixed by welding so as to sandwich the fuse element 15 from the plate thickness direction.
[0015]
Thereby, the insulating housing 13 attached to the fuse element 15 covers the inner edge 11 a and the upper end edge 11 c of each flat plate terminal portion 11 together with the fusible portion 12. Therefore, the fuse element 15 is covered with the insulating housing 13 except for the front and back regions from the outer edge 11d and the lower end edge 11e of each flat terminal portion 11 to the intermediate portion 11f located on the side of the fusible portion 12.
[0016]
And the intermediate part 11f of each said flat terminal part 11 is electrically connected to this other party terminal 21 by being clamped by the other party terminal 21 of the fuse mounting part 20 which concerns on one Embodiment mentioned later. .
[0017]
The pitch P between the intermediate portions 11f and 11f of each flat plate terminal portion 11 is formed to be equal to the pitch P between the tab terminal portions 55 and 55 of the conventional fuse 50.
[0018]
Further, a jig engaging step 14 a is provided at a portion of the insulating housing 13 that covers the upper end edge 11 c of each flat terminal portion 11. The jig engaging step 14a is a portion with which a fuse removal tool (not shown) is engaged when the fuse 10 mounted on the fuse mounting portion 20 is removed.
[0019]
The above-described fuse 10 has no tab terminal portion that protrudes outward from the insulating housing 15 like the tab terminal portion 55 in the conventional fuse 50 shown in FIG. It has become.
[0020]
By the way, in the conventional fuse mounting portion 60, the base end side of the fuse element 56 is accommodated in the insulating housing 53, and the tab terminal portion 55 has a structure that matches the conventional fuse 50 that protrudes greatly outward from the insulating housing 53. Therefore, it is impossible to mount the fuse 10 having such a shape that the fuse 10 itself has a substantially rectangular shape when viewed from the front. For this reason, it is necessary to manufacture an electrical junction box or the like provided with a dedicated fuse mounting portion that matches the shape of each fuse.
[0021]
Accordingly, the present invention provides a fuse mounting portion structure that has compatibility that allows arbitrary mounting of fuses having different shapes and can improve fuse insertion workability, and an electrical junction box in which the fuse mounting portion is formed. For the purpose of provision.
[0022]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is provided with a fuse insertion portion into which a first fuse having a pair of tab terminals protruding from the insulating housing in the mounting direction is inserted and fitted, and provided in the fuse insertion portion. And a mating terminal connected to the pair of tab terminal portions and a first stopper portion provided in the fuse insertion portion for restricting the insertion position of the first fuse. A pair of flat terminal portions are provided on both sides of the insulating housing, and the pitch between the flat terminal portions is the same as the pitch between the pair of tab terminal portions, and the second can be inserted into the fuse insertion portion. A second stopper portion for restricting the insertion position of the fuse and connecting the flat plate terminal to the mating terminal is provided in the fuse insertion portion, and the fuse insertion portion includes the first fuse and the second fuse. The first stopper portion is provided at an upper position of the fuse insertion portion, the housing of the first fuse projects from the fuse insertion portion, and the second stopper portion of the fuse insertion portion is provided. A housing of a second fuse provided at a lower position is buried in the fuse insertion portion, and the first stopper portion is provided at the upper end of a pair of stopper members respectively provided on the left and right inner walls facing the fuse insertion portion. A pair of tapered portions formed inward toward each other, and the tapered portion provided in the insulating housing of the first fuse abuts on the tapered portion, whereby the insertion position of the first fuse with respect to the fuse insertion portion is determined. The second stopper portion is a lower wall provided in the fuse insertion portion, and the upper end of the lower wall is regulated By lower edge of the insulating housing of the second fuse contact, characterized in that so as to regulate the insertion position of the second fuse to said fuse insertion portion.
[0023]
In the structure of the fuse mounting portion, when the first fuse is mounted, the insertion position with respect to the fuse insertion portion is regulated by the first stopper portion, and the tab terminal portion is connected to the counterpart terminal. When the second fuse is mounted, the insertion position with respect to the fuse insertion portion is regulated by the second stopper portion, and the intermediate portion of the flat plate terminal portion is connected to the mating terminal.
[0024]
Therefore, in the structure of the fuse mounting portion, the first fuse and the second fuse having different shapes can be arbitrarily mounted, and compatibility can be provided.
[0025]
In addition, the overall height of the fuse mounting portion can be reduced as compared with the conventional fuse mounting portion, and the fuse insertion workability is improved.
[0027]
Further, in the structure of this fuse mounting portion, when the first fuse is mounted, the insertion position with respect to the fuse insertion portion is regulated by the first stopper portion provided at the upper position of the fuse insertion portion. The mating terminal clamps and fixes the pair of tab terminal portions protruding in the mounting direction. In addition, when the second fuse is mounted, the insertion position of the fuse insertion portion is regulated by the second stopper portion provided at the lower position of the fuse insertion portion. Side terminals are connected.
[0028]
Therefore, with this fuse mounting portion structure, the fuse support balance at the fuse mounting portion can be improved.
[0030]
Further, in this fuse mounting portion structure, when the first fuse is mounted, the insulating housing of the first fuse comes into contact with the tapered portion at the upper end of the stopper member provided in the fuse insertion portion, thereby insulating the housing. The taper engagement between the lower edge of the stopper and the upper end of the stopper member ensures that the insertion position of the first fuse with respect to the fuse insertion portion is reliably regulated.
[0031]
Therefore, in this fuse mounting portion structure, the support balance of the first fuse in the fuse mounting portion can be further improved.
[0033]
In this fuse mounting portion structure, when the second fuse is mounted, the lower end edge of the insulating housing of the second fuse abuts on the upper end of the lower wall provided in the fuse insertion portion, so that the fuse insertion portion The insertion position of the second fuse with respect to is reliably regulated.
[0034]
Therefore, in the structure of the fuse mounting portion, the second support balance in the fuse mounting portion can be further improved.
The electrical junction box according to claim 2 is characterized in that the structure of the fuse mounting portion according to claim 1 is integrally formed on the upper surface side.
In this electrical junction box, the first fuse and the second fuse having different shapes can be arbitrarily attached, and the fuse attachment portion can be made compatible.
Further, the overall height of the fuse mounting portion can be reduced. Furthermore, the support balance at the fuse mounting portion can be improved.
[0035]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a structure of a fuse mounting portion according to an embodiment of the present invention will be described with reference to the drawings.
[0036]
FIG. 1 is a perspective view showing a fuse mounting portion according to an embodiment of the present invention and different fuses mounted on the fuse mounting portion, and FIG. 2 is a plan view showing the structure of the fuse mounting portion shown in FIG. 3 is a sectional view taken along the line AA in FIG. 2, and FIG. 4 is a sectional view taken along the line BB in FIG.
[0037]
As shown in FIGS. 1 to 4, the fuse mounting portion 20 has a first fuse (conventional fuse shown in FIG. 13) 50 in which a pair of tab terminals 55, 55 project from the insulating housing 53 in the mounting direction. The fuse insertion portion 23 to be fitted, the mating terminals 21 and 21 provided in the fuse insertion portion 23 to which the pair of tab terminal portions 55 and 55 are connected, and the fuse insertion portion 23 provided in the first The first stopper portion 25 for restricting the insertion position of one fuse 50 and the hood portion 24 into which the insulating housing 53 is inserted and fitted are provided.
[0038]
Further, the fuse mounting portion 20 of the present embodiment is provided with a pair of flat plate terminal portions 11 and 11 on both sides of the insulating housing 13, and the pitch between the flat plate terminal portions 11 and 11 is between the pair of tab terminal portions 55 and 55. The insertion position of the second fuse (small fuse shown in FIG. 16) 10 that can be inserted into the fuse insertion portion 23 is regulated, and the flat plate terminal is connected to the mating terminals 21, 21. A second stopper portion 26 is provided.
[0039]
At the upper end portion of the hood portion 24, a jig extraction notch portion 27 into which a fuse extraction jig (not shown) can be inserted and removed is provided. Further, at the upper edge of the hood portion 24, when the fuse is inserted and fitted into the fuse insertion portion 23, the insertion of the insulating housing 53 of the first fuse 50 and the insulating housing 13 of the second fuse 10 is inserted and guided. A guide part 28 is provided.
[0040]
The first stopper portion 25 for restricting the insertion position of the first fuse 50 is formed by integrating a pair of stopper members 29 and 29 on the inner walls of the opposite left and right wall portions 24b and 24b of the hood portion 24 with the wall portion 24b. And a pair of taper portions 30 and 30 are formed at the upper ends of the stopper members 29 and 29 toward the inside.
[0041]
The taper portions 53a and 53a at the lower end edge of the insulating housing 53 of the first fuse 50 abut on the pair of taper portions 30 and 30 so that the insertion position of the first fuse 50 with respect to the fuse mounting portion 20 is determined. regulate.
[0042]
The second stopper portion 26 that regulates the insertion position of the second fuse 10 includes a lower wall 31 provided at the lower end portion of the fuse insertion portion 23 in the hood portion 24.
[0043]
Then, the lower end edge of the insulating housing 13 of the second fuse 10 abuts on the upper end of the lower wall 31, thereby restricting the insertion position of the second fuse 10 with respect to the fuse mounting portion 20.
[0044]
The insertion guide portion 28 includes both end step portions of the concave portions 32 and 32 formed by cutting out the upper portions of the front and rear wall portions 24a and 24a facing the hood portion 24, and the front and rear wall portions 24a and 24a. It consists of the inclined surfaces 33 and 34 which are formed between the upper edge part and the upper edge part of right and left wall part 24b, 24b and which goes to the inner side.
[0045]
The jig insertion / removal cutout portion 27 is formed on the left and right wall portions 24a, 24a of the hood portion 24 at the upper end portion.
[0046]
In this way, the fuse mounting portion 20 is configured and integrally formed on the upper surface side of the electrical connection box 34 as shown in FIG.
[0047]
6 to 8 show a state where the first fuse 50 shown in FIG.
[0048]
The first fuse 50 causes the taper portions 53 b and 53 b at the lower edge of the insulating housing 53 to contact the taper portions 30 and 30 which are the first stopper portions 25 of the fuse mounting portion 20, thereby causing the fuse mounting portion 20 to contact the first fuse 50. When the tab terminal portions 55 and 55 are mounted and fixed to the counterpart terminals 21 and 21 of the fuse mounting portion 20, the tab terminal portions 55 and 55 are electrically connected to the counterpart terminals 21 and 21.
[0049]
As shown in FIG. 8, the mating terminal 21 is formed with a terminal piece at one end of a bus bar, for example, and the terminal piece is cracked by a U-shaped slot 21b formed along the extending direction of the terminal piece. This is a so-called tuning fork connection terminal in which a pair of clamping portions 21a and 21a are formed by bulging the upper ends of the two toward the inside.
[0050]
The first stopper portions 30, 30 of the fuse mounting portion 20 are located at the upper position of the hood portion 24 so that the tab terminal portions 55, 55 of the first fuse 50 can be clamped and fixed to the mating terminals 21, 21. Is provided.
[0051]
9 to 11 show a state in which the second fuse 10 shown in FIG.
[0052]
The second fuse 10 is mounted on the fuse mounting portion 20 by bringing the lower end edge of the insulating housing 13 into contact with the upper end of the lower wall 31 that is the second stopper portion 26 of the fuse mounting portion 20. The intermediate parts 11 f and 11 f of the parts 11 and 11 are electrically connected to the counterpart terminals 21 and 21 by being clamped and fixed to the counterpart terminals 21 and 21 of the fuse mounting part 20.
[0053]
As shown in FIG. 11, the mating terminal 21 is formed with a terminal piece at one end of a bus bar, for example, and the terminal piece is cracked by a U-shaped slit 21b formed along the extending direction of the terminal piece. This is a so-called tuning fork connection terminal in which a pair of clamping portions 21a and 21a are formed by bulging the upper ends of the two toward the inside.
[0054]
The second stopper portion 26 of the fuse mounting portion 20 has a hood portion so that the intermediate portions 11f and 11f of the flat plate terminal portions 11 and 11 of the second fuse 10 can be clamped and fixed to the mating terminals 21 and 21. The second fuse 10 provided at the lower position of 24 and mounted on the fuse mounting portion 20 is buried in the fuse insertion portion 23 of the fuse mounting portion 20.
[0055]
According to the fuse mounting portion 20 of the above-described embodiment, as shown in FIG. 1, the insertion position of the first fuse 50 by the first stopper portion 25 provided at the upper position of the fuse insertion portion 23 of the fuse mounting portion 20. The first fuse 50 and the second fuse 10 are arbitrarily mounted by restricting the insertion position of the second fuse 10 with the second stopper portion 26 provided at the lower position of the fuse insertion portion 23. Can be made compatible.
[0056]
Further, the overall height of the fuse mounting portion 20 can be lowered as compared with the conventional fuse mounting portion 60, and the workability of inserting the fuses 50 and 10 is improved.
[0057]
【The invention's effect】
As is apparent from the above description, according to the structure of the fuse mounting portion according to the first aspect, the first fuse and the second fuse having different shapes can be arbitrarily mounted. Accordingly, it is possible to make the fuse mounting portion compatible.
[0058]
In addition, the overall height of the fuse mounting portion can be reduced as compared with the conventional fuse mounting portion, and the fuse insertion workability can be improved.
[0059]
In addition, it is possible to improve the support balance of the fuse at the fuse mounting portion.
[0060]
Moreover, according to the structure of this fuse mounting part, the support balance of the 1st fuse in a fuse mounting part can be improved further.
[0061]
Moreover, according to the structure of this fuse mounting part, the support balance of the 2nd fuse in a fuse mounting part can be improved further.
According to the electrical junction box of the second aspect, the first fuse and the second fuse having different shapes can be arbitrarily mounted, and the fuse mounting portion can be made compatible. Further, the overall height of the fuse mounting portion can be reduced. Furthermore, the support balance at the fuse mounting portion can be improved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a fuse mounting portion according to an embodiment of the present invention and a fuse mounted on the fuse mounting portion.
2 is a plan view showing a structure of a fuse mounting portion shown in FIG. 1. FIG.
FIG. 3 is a cross-sectional view taken along line AA in FIG.
4 is a cross-sectional view taken along line BB in FIG.
5 is a perspective view showing an example in which the fuse mounting portion shown in FIG. 1 is installed in an electrical junction box. FIG.
6 is a plan view showing a state in which the first fuse (the conventional fuse shown in FIG. 13) is mounted on the fuse mounting portion shown in FIG. 1;
7 is a cross-sectional view taken along the line CC of FIG.
8 is a cross-sectional view taken along the line DD of FIG.
9 is a plan view showing a state in which a second fuse (new type fuse shown in FIG. 16) is attached to the fuse attachment portion shown in FIG. 1;
10 is a cross-sectional view taken along line EE of FIG.
11 is a cross-sectional view taken along line FF in FIG.
FIG. 12 is a perspective view showing a conventional fuse (first fuse) and a conventional fuse mounting portion in which the fuse is mounted;
13 is a front view of the fuse shown in FIG. 12. FIG.
14 is a front cross-sectional view showing a state where the fuse shown in FIG.
15 is a side view showing a state in which the fuse shown in FIG. 12 is mounted on the fuse mounting portion.
FIG. 16 is a front view of a new type fuse (second fuse).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 2nd fuse 11 Flat terminal part 11f Intermediate part 13 Insulation housing 20 Fuse mounting part 21 Mating terminal 22 Mating terminal insertion part 23 Fuse insertion part 25 First stopper part 26 Second stopper part 29 Stopper member 30 Taper part 31 Lower wall portion 50 First fuse 51 Flat plate terminal 53 Insulating housing 53a Taper portion 55 Tab terminal portion

Claims (2)

絶縁ハウジングから装着方向に一対のタブ端子が突出した第１のヒューズが挿入・嵌合されるヒューズ挿入部、このヒューズ挿入部内に設けられて前記一対のタブ端子部が接続される相手側端子と、ヒューズ挿入部内に設けられて前記第１のヒューズの挿入位置を規制する第１ストッパー部とを備えたヒューズ装着部の構造であって、
絶縁ハウジングの両側に一対の平板端子部がそれぞれ設けられ該平板端子部間のピッチが前記一対のタブ端子部間のピッチと同寸法とされると共に前記ヒューズ挿入部内に挿入可能な第２のヒューズの挿入位置を規制し平板端子を前記相手側端子と接続する第２ストッパー部を前記ヒューズ挿入部に設けて、
ヒューズ挿入部に前記第１のヒューズ、第２のヒューズをそれぞれ装着可能とし、前記第１ストッパー部が前記ヒューズ挿入部の上部位置に設けられて前記第１のヒューズのハウジングが前記ヒューズ挿入部から突出し、前記第２ストッパー部が前記ヒューズ挿入部の下部位置に設けられて第２のヒューズのハウジングが前記ヒューズ挿入部に埋没され、
前記第１ストッパー部が、前記ヒューズ挿入部の対向する左右の内壁にそれぞれ設けられた一対のストッパー部材の上端に形成した互いに内側に向かう一対のテーパ部であり、該テーパ部に前記第１のヒューズの絶縁ハウジングに設けたテーパ部が当接することにより、前記ヒューズ挿入部に対する前記第１のヒューズの挿入位置を規制し、
前記第２ストッパー部が、前記ヒューズ挿入部内に設けられた下部壁であり、該下部壁の上端に前記第２のヒューズの絶縁ハウジングの下端縁が当接することにより、前記ヒューズ挿入部に対する前記第２のヒューズの挿入位置を規制するようにしたことを特徴とするヒューズ装着部の構造。A fuse insertion portion into which a first fuse having a pair of tab terminals projecting from the insulating housing in the mounting direction is inserted and fitted; a mating terminal provided in the fuse insertion portion to which the pair of tab terminal portions are connected; A structure of a fuse mounting portion provided with a first stopper portion provided in the fuse insertion portion and restricting the insertion position of the first fuse,
A pair of flat plate terminal portions are provided on both sides of the insulating housing, and a pitch between the flat plate terminal portions is the same as a pitch between the pair of tab terminal portions, and a second fuse that can be inserted into the fuse insertion portion. A second stopper portion for restricting the insertion position of the plate and connecting a flat plate terminal to the counterpart terminal is provided in the fuse insertion portion,
The first and second fuses can be mounted in the fuse insertion portion, the first stopper portion is provided at an upper position of the fuse insertion portion, and the housing of the first fuse extends from the fuse insertion portion. Protruding, the second stopper portion is provided at a lower position of the fuse insertion portion, and the housing of the second fuse is buried in the fuse insertion portion,
The first stopper portions are a pair of tapered portions formed at upper ends of a pair of stopper members respectively provided on the opposite left and right inner walls of the fuse insertion portion, and facing each other. The taper portion provided in the insulating housing of the fuse abuts to regulate the insertion position of the first fuse with respect to the fuse insertion portion,
The second stopper portion is a lower wall provided in the fuse insertion portion, and the lower end edge of the insulating housing of the second fuse abuts on the upper end of the lower wall, whereby the second stopper portion with respect to the fuse insertion portion. 2. The structure of the fuse mounting part, wherein the insertion position of the fuse of 2 is regulated . 請求項１に記載されたヒューズ装着部の構造が上面側に一体に形成されていることを特徴とする電気接続箱。An electrical junction box, wherein the structure of the fuse mounting portion according to claim 1 is integrally formed on the upper surface side .
JP2000312085A 2000-10-12 2000-10-12 Structure of fuse mounting part and electrical junction box in which this fuse mounting part is formed Expired - Fee Related JP4334126B2 (en)

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US7612646B2 (en) 2003-04-04 2009-11-03 Yazaki Corporation Fuse cavity structure and electric connection box
JP4238783B2 (en) 2004-06-08 2009-03-18 住友電装株式会社 Electrical connection box fuse mounting structure
KR100907537B1 (en) * 2007-05-25 2009-07-14 한국단자공업 주식회사 Low Fuse Mounting Structure and Separator
KR100920246B1 (en) * 2007-10-09 2009-10-05 경신공업 주식회사 Mounting member of fuse
JP5144453B2 (en) * 2008-09-30 2013-02-13 古河電気工業株式会社 Fuse holding structure and electric junction box having fuse holding structure
JP5765629B2 (en) * 2011-09-26 2015-08-19 住友電装株式会社 Electrical junction box
JP5838955B2 (en) * 2012-11-26 2016-01-06 アンデン株式会社 Fuse mounting structure
CN106298395B (en) * 2016-10-28 2018-09-25 安徽江淮汽车集团股份有限公司 Fuse holder assembly
KR20180086769A (en) * 2017-01-23 2018-08-01 삼성에스디아이 주식회사 Manual Service Disconnect for Battery System
JP2023175263A (en) * 2022-05-30 2023-12-12 株式会社オートネットワーク技術研究所 Electric connection box

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