JP3813684B2

JP3813684B2 - Fuse extraction jig and fuse extraction structure

Info

Publication number: JP3813684B2
Application number: JP05503097A
Authority: JP
Inventors: 義信古屋; 秀則山梨; 貴己杉山
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 1997-03-10
Filing date: 1997-03-10
Publication date: 2006-08-23
Anticipated expiration: 2017-03-10
Also published as: JPH10255640A

Description

【０００１】
【発明の属する技術分野】
本発明は、ヒューズ装着部に装着されたヒューズを抜き取るためのヒューズ抜け治具及びヒューズ抜き構造に関する。
【０００２】
【従来の技術】
図１２（ａ）、（ｂ）、（ｃ）は、実開平２−５８５４号公報に記載されたヒューズ抜き治具１及びヒューズ抜き構造を示す。このヒューズ抜き治具１は、一対の脚部２ａ、２ｂと、これらの脚部２ａ、２ｂを連結する可撓性の連結部３と、一対の脚部２ａ、２ｂの先端部に形成された係合爪部４ａ、４ｂとで形成されている。
【０００３】
このヒューズ抜き治具１を用いて、ヒューズ装着部５に装着された状態のブレード型のヒューズ６を抜き取るには、図１２（ａ）に示すように、ヒューズ抜き治具１をヒューズ６の上部に位置させた後に、図１２（ｂ）に示すように、ヒューズ抜き治具１をヒューズ６の頭部６ａ側に移動させ、頭部６ａを一対の脚部２ａ、２ｂ間に挿入する。このとき、連結部３が可撓性を有しているので、一対の脚部２ａ、２ｂ間が開く。ヒューズ６の頭部６ａを一対の脚部２ａ、２ｂ間に挿入していくと、頭部６ａの下面側に係合爪部４ａ、４ｂが係合する。この状態から、図１２（ｃ）に示すように、ヒューズ抜き治具１を上方に引き上げることにより、ヒューズ６がヒューズ装着部５から引き抜かれる。
【０００４】
また、図１３には、実開平５−６６８６０号公報に記載されたヒューズ抜き治具７を示す。このヒューズ抜き治具７も、上記ヒューズ抜き治具１と同様に、一対の脚部８ａ、８ｂと、これらの脚部８ａ、８ｂを連結する可撓性の連結部９と、脚部８ａ、８ｂの先端部に設けられた係合爪部１０ａ、１０ｂとからなる。さらに、このヒューズ抜き治具７では、ブレード型のヒューズより小さいミニヒューズを抜き取るための係合爪部１１ａ、１１ｂが設けられている。また、このヒューズ抜き治具７では、ヒューズ６の頭部６ａを押さえるための突起１２を一対の脚部８ａ、８ｂの内面側に設けてあり、ヒューズを抜き取る際の作業性を向上させている。
【０００５】
【発明が解決しようとする課題】
しかしながら、上記各公報に記載されたヒューズ抜き治具１、７は、いずれも、係合爪部４ａ、４ｂ、１０ａ、１０ｂをヒューズ６の頭部６ａの下面側に係合させた状態で、上方に引き上げるため、上方に引き上げる際に、一対の脚部２ａ、２ｂ、８ａ、８ｂ間が広がって係合爪部４ａ、４ｂ、１０ａ、１０ｂが頭部６ａの下面側からはずれることがある。また、一対の脚部４ａ、４ｂ、１０ａ、１０ｂ間が広がると頭部６ａへの係合爪部４ａ、４ｂ、１０ａ、１０ｂの係合部分が少なくなり、この状態で上方に引き上げると、少ない係合部分に大きな力が加わるため係合爪部４ａ、４ｂ、１０ａ、１０ｂが割れるおそれがある。
【０００６】
また、一対の脚部２ａ、２ｂ、８ａ、８ｂを強くつかむことにより、係合爪部４ａ、４ｂ、１０ａ、１０ｂの頭部６ａへの係合部分を充分確保し、はずれや割れを防止することが考えられるが、この場合、一対の脚部２ａ、２ｂ、８ａ、８ｂを強くつかんだ状態で上方へも引き上げるので、指への負担が大きくなり、ヒューズ抜き作業に手間が掛かるという問題がある。
【０００７】
そこで本発明は、ヒューズの頭部に確実に係合することができて、ヒューズ抜き作業が容易となるヒューズ抜き治具及びヒューズ抜き構造の提供を目的とする。
【０００８】
【課題を解決するための手段】
上記目的を達成するため、請求項１の発明は、ヒューズ装着部に装着されたヒューズを抜き取るヒューズ抜き治具であって、操作基部と、この操作基部と一体に形成された可撓性を有する一対の脚部と、前記ヒューズの頭部と係合し前記操作基部のヒューズ装着部への押圧による前記脚部の作用で前記ヒューズをヒューズ装着部から抜き出す係合部とからなり、前記一対の脚部が前記操作基部の両側から同方向に延設され、該一対の脚部の中間部に前記ヒューズ装着部へのヒューズの脱着方向に伸縮自在な弾性伸縮部が設けられ、先端部に前記ヒューズ装着部の周囲に当接する当接端が設けられ、前記一対の脚部間の操作基部の裏面側から前記係合部が突設され、この係合部が前記脚部の弾性伸縮部を収縮させることで前記ヒューズの頭部と係合し、前記弾性伸縮部の伸張によりヒューズ装着部からヒューズを抜き出す一対の係合爪部を有し、前記操作基部が可撓性を有し、前記ヒューズ装着部側への押圧により弾性伸縮部が収縮すると共に、前記操作基部が撓んで前記係合部が拡開し、前記一対の係合爪部がヒューズの頭部に係合することを特徴としている。
【０００９】
このヒューズ抜き治具では、ヒューズの頭部に係合部を係合させた状態で、操作基部をヒューズ装着部側へ押圧する。操作基部をヒューズ装着部側へ押圧すると、この操作基部の押圧による一対の脚部の作用で係合部は、ヒューズをヒューズ装着部から抜き出す。この場合、係合部が頭部からはずれないように一対の脚部を強くつまむ必要はなく、係合部をヒューズの頭部に一旦係合させてしまえば、この係合状態がはずれないようにする必要はない。また、操作基部をヒューズ装着部に対して引き上げる必要はなく、逆にヒューズ装着部側に向けて押圧すれば、この押圧により一対の脚部が作用して係合部がヒューズをヒューズ装着部から抜き出す。
【００１１】
また、ヒューズ抜き治具では、ヒューズ装着部に装着されたヒューズの上部にヒューズ抜き治具を配置し、ヒューズ装着部の周囲に一対の脚部の当接端を当接させる。この状態から、操作基部をヒューズ装着部側へ押圧すると、弾性伸縮部が収縮して、係合部がヒューズの頭部と係合する。操作基部への押圧をやめると、弾性伸縮部が元の形状に戻ろうとするための伸張動作により、係合部がヒューズ装着部から離れる方向へ移動するため、頭部をヒューズ装着部から離れる方向（ヒューズ抜き方向）へ移動させる。この結果、係合部はヒューズをヒューズ装着部から抜き出す。
【００１２】
この場合、係合部がヒューズの頭部からはずれないように一対の脚部を強くつまむ必要はなく、操作基部をヒューズ装着部側へ押圧するだけで、一対の脚部の作用により、ヒューズをヒューズ装着部から容易に抜き出すことができる。
【００１４】
さらに、このヒューズ抜き治具では、操作基部をヒューズ装着部側へ押圧することで操作基部の裏面側の係合部がヒューズの頭部に係合する。この場合、操作基部が可撓性を有しているため操作基部が撓んで係合部が拡開することにより、係合部がヒューズの頭部に係合すると共に、操作基部をヒューズ装着部側へ押圧することで一対の脚部の弾性伸縮部が収縮して、係合部がヒューズの頭部に近づき、係合する。
【００１５】
請求項２の発明は、ヒューズ装着部に装着されたヒューズを抜き取るヒューズ抜き治具であって、操作基部と、この操作基部と一体に形成された可撓性を有する一対の脚部と、前記ヒューズの頭部と係合し前記操作基部のヒューズ装着部側への押圧による前記脚部の作用で前記ヒューズをヒューズ装着部から抜き出す係合部とからなり、前記一対の脚部が前記操作基部の両側に一体に形成されて前記ヒューズ装着部の周囲の抜き治具装着孔に挿入され、前記係合部が前記一対の脚部の先端側にそれぞれ設けられてヒューズ本体の下部側に当接し、前記操作基部へのヒューズ装着部側への押圧力が前記一対の脚部を介して伝わって前記ヒューズをヒューズ装着部から押し上げて抜き出す押し上げ爪部を有することを特徴としている。
【００１６】
このヒューズ抜き治具では、ヒューズの頭部に係合部を係合させた状態で、操作基部をヒューズ装着部側へ押圧する。操作基部をヒューズ装着部側へ押圧すると、この操作基部の押圧による一対の脚部の作用で係合部は、ヒューズをヒューズ装着部から抜き出す。この場合、係合部が頭部からはずれないように一対の脚部を強くつまむ必要はなく、係合部をヒューズの頭部に一旦係合させてしまえば、この係合状態がはずれないようにする必要はない。また、操作基部をヒューズ装着部に対して引き上げる必要はなく、逆にヒューズ装着部側に向けて押圧すれば、この押圧により一対の脚部が作用して係合部がヒューズをヒューズ装着部から抜き出す。具体的には、ヒューズ抜き治具では、操作基部を押圧することで、弾性伸縮部が収縮して、操作基部が撓むことにより、一対の係合爪部がヒューズ本体の下部側に当接する。そして、操作基部へのヒューズ装着部側への押圧をやめると、弾性伸縮部が伸張し、操作基部の撓みがもとに戻ることにより、ヒューズが上方へ引き上げられてヒューズ装着部から抜き出る。
【００１７】
請求項３の発明は、請求項２記載の発明であって、前記操作基部を間にして、前記操作基部と共に前記一対の脚部が円弧状に形成されていることを特徴としている。
【００１８】
このヒューズ抜き治具では、円弧状に形成されたヒューズ抜き治具を抜き治具装着孔内に挿入し、操作基部をヒューズ装着部側に押圧すると、一対の脚部が抜き治具装着孔の内壁に当接し、その先端部の押し上げ爪部がヒューズの頭部の下面側に当接する。さらに、操作基部をヒューズ装着部側へ押圧すると、押し上げ爪部がヒューズの頭部を上方に押し上げるため、ヒューズがヒューズ装着部から抜き出る。
【００１９】
請求項４の発明は、請求項１に記載のヒューズ抜き治具を用いたヒューズ抜き構造であって、前記ヒューズ装着部のヒューズ端子部が挿入される端子挿入口の両側に、前記当接端が挿入される溝部が設けられていることを特徴としている。
【００２０】
このヒューズ抜き構造では、ヒューズ抜き治具の当接端を溝部内に挿入し、ヒューズ抜き治具の操作基部を押圧することで弾性伸縮部を収縮させる。弾性伸縮部を収縮させると、一対の係合爪部がヒューズの頭部に係合する。そして、操作基部への押圧をやめると、弾性伸縮部の伸張により、操作基部が上方に移動し、これに伴って、ヒューズがヒューズ装着部から抜き出る。
【００２１】
請求項５の発明は、請求項２又は請求項３記載のヒューズ抜け治具を用いたヒューズ抜き構造であって、前記ヒューズ装着部のヒューズの端子部が挿入される端子挿入口の両側に前記一対の脚部が収容される抜き治具装着孔が形成されていることを特徴としている。
【００２２】
このヒューズ抜き構造では、ヒューズ抜き治具を抜き治具装着孔内に挿入し、操作基部を押圧すると、この押圧力により一対の脚部を伝わって押し上げ爪部に伝わり、ヒューズ本体の下部側から押し上げる。この結果、ヒューズがヒューズ装着部から抜き出る。
【００２３】
【発明の実施の形態】
以下、本発明に係るヒューズ抜き治具及びヒューズ抜き構造の実施形態について説明する。
【００２４】
第１実施形態
図１及び図２は、第１実施形態のヒューズ抜き治具１３及び、このヒューズ抜き治具１３を用いてヒューズ６が抜き取られるヒューズ抜き構造を示す。
【００２５】
図１（ａ）、（ｂ）及び図２に示すように、ヒューズ抜き治具１３は、操作基部１４と、この操作基部１４と一体に形成された可撓性を有する一対の脚部１５ａ、１５ｂと、ヒューズ６の頭部６ａと係合し操作基部１４のヒューズ装着部側への押圧による脚部１５ａ、１５ｂの作用でヒューズ６をヒューズ装着部１６から抜き出す係合部１７とからなる。
【００２６】
一対の脚部１５ａ、１５ｂは操作基部１４の両側から同方向に延設され、この一対の脚部１５ａ、１５ｂの中間部にヒューズ装着部１６へのヒューズ６の脱着方向に伸縮自在な弾性伸縮部１８ａ、１８ｂがそれぞれ設けられ、先端部にヒューズ装着部１６の周囲に当接する当接端１９ａ、１９ｂが設けられいる。そして、操作基部１４、一対の脚部１５ａ、１５ｂとで全体としてコ字型断面形状に形成されている。弾性伸縮部１８ａ、１８ｂは、波形に形成されて、当接端１９ａ、１９ｂが操作基部１４に対して接離する方向に伸縮自在となっている。
【００２７】
また、係合部１７は、図２に示すように、一対の脚部１５ａ、１５ｂ間の操作基部１４の裏面側から突設された一対の係合爪部２０ａ、２０ｂで構成されている。一対の係合爪部２０ａ、２０ｂは、操作基部１４の裏面から一対の脚部１５ａ、１５ｂ側にそれぞれ突設されたアーム２１、２１と、このアーム２１、２１の先端にそれぞれ向き合うように突設された爪２２、２２とで形成されている。そして爪２１、２１間の寸法は、ヒューズ６の頭部６ａの幅寸法に略等しく設定されている。
【００２８】
一方、ヒューズ６が装着され、このヒューズ６がヒューズ抜き治具１３により抜き取られる電気接続箱２３は、図１（ａ）、（ｂ）に示すように、分岐回路を形成するブスバー２４が収容された接続箱本体２５と、この接続箱本体２５の上部を閉鎖すると共に、ブスバー２４の端子部２６が収容される端子収容部２７を有するアッパーカバー２８とで形成されている。端子収容部２７の表面側がヒューズ装着部１６となっており、このヒューズ装着部１６と端子収容部１６との間には、ヒューズ６の端子部６ｂが端子収容部２７内に挿入される端子挿入孔２９が形成されている。また、端子挿入孔２９の周囲には、ヒューズ６のヒューズ本体６ｃが収容される本体収容部３０が形成されている。さらに、この本体収容部３０の周囲には、上記ヒューズ抜き治具１３の当接端１９ａ、１９ｂがそれぞれ挿入される溝部３１、３１が形成されている。この溝部３１、３１は、図３に示すように、本体収容部３０を間に挟んで両側に形成されている。
【００２９】
次に、上記ヒューズ抜き治具１３を用いて、ヒューズ装着部１６に装着されたヒューズ６を抜き出す手順について説明する。
【００３０】
図４（ａ）に示すように、ヒューズ抜き治具１３の一対の脚部１５ａ、１５ｂの当接端１９ａ、１９ｂを溝部３１、３１にそれぞれ挿入して、ヒューズ抜き治具１３をヒューズ６の上部に配置する。この状態から、図４（ｂ）に示すように、操作基部１４をヒューズ装着部１６側に向けて押圧する。操作基部１４をヒューズ装着部１６側に向けて押圧すると、操作基部１４の中間部分が下方（ヒューズ装着部１６側）に向けて撓むと共に、弾性伸縮部１８ａ、１８ｂが収縮する。この結果、一対の係合爪部２０ａ、２０ｂがヒューズ装着部１６側に移動すると共に、操作基部１４の中間部が撓んでアーム２１、２１が外側に広がる（係合部１７が拡開する）ことにより、爪２２、２２がヒューズ６の頭部６ａの下面側に係合する。そして、操作基部１４への押圧をやめると、すなわち操作基部１４から指を離すと、弾性伸縮部１８ａ、１８ｂが伸張することにより、図４（ｃ）に示すように、操作基部１４が上方に移動し、これに伴って、ヒューズ６の頭部６ａが上方に移動する。これにより、ヒューズ６の端子部６ｂがブスバー２４の端子部２６から抜き出る。そして、ヒューズ６と共に、ヒューズ抜き治具１３をヒューズ装着部１６から離すことでヒューズ６をヒューズ装着部１６から取り外すことができる。
【００３１】
この実施形態のヒューズ抜き治具１３によれば、操作基部１４をヒューズ装着部１６側に向けて押圧し、操作基部１４から指を離せば、この押圧による一対の脚部１５ａ、１５ｂの作用によりヒューズ６がヒューズ装着部１６から外れるので、ヒューズ抜き作業が容易になる。
【００３２】
また、操作基部１４をヒューズ装着部１６側へ押圧することにより、一対の係合爪部２０ａ、２０ｂをヒューズ６の頭部６ａの下面側に確実に係合させることができる。
【００３３】
さらに、この実施形態のヒューズ抜き治具１３は、ヒューズ抜き治具１６の係合部１７をヒューズ６の頭部６ａに係合させるための力のみ必要で、従来のように、ヒューズ装着部１６からヒューズを抜き取るための力及び、係合がはずれないようにするための挟持する力が不要になるので、ヒューズ抜き作業が容易になり、作業性が向上する。また、ヒューズ６を抜き取るために過度の力を加えることがないので、ヒューズ抜き治具の一対の係合爪部２０ａ、２０ｂが破損することがない。
【００３４】
次にこの第１実施形態のヒューズ抜き治具の変形例について説明する。図５には上記実施形態のヒューズ抜き治具１３を示す。図６に示すヒューズ抜き治具３２は、一対の脚部３３ａ、３３ｂに設けた弾性伸縮部３４ａ、３４ｂの形状が異なる。図６に示すヒューズ抜き治具３２の弾性伸縮部３４ａ、３４ｂは、一対の脚部３３ａ、３３ｂに矩形状の孔３５、３５と、くさび型の切欠３６、３６とが交互に設けられて構成されている。そして、孔３５、３５、切欠３６、３６がつぶれるように撓むことにより弾性伸縮部３４ａ、３４ｂが伸縮可能となっている。
【００３５】
さらに図７に示すヒューズ抜き治具３７の弾性伸縮部３８ａ、３８ｂは、一対の脚部３９ａ、３９ｂの中間部に長孔４０、４０が設けられて構成されている。この長孔４０、４０の両側部分が外側に撓むことにより、弾性伸縮部３８ａ、３８ｂが伸縮可能となっている。
【００３６】
また、ヒューズ６を抜き取った後にも、ヒューズ６は、ヒューズ抜き治具１３に係合されているので、ヒューズ１３をヒューズ装着部１６から抜き取った後に脱落したり、紛失したりすることがない。
【００３７】
さらに、本実施形態では、ヒューズ６の係合状態を維持するためにヒューズ抜き治具１３をつまむという動作が不要なので、指への負担が大幅に軽減する。
【００３８】
第２実施形態
次に図８及び図９に示す第２実施形態のヒューズ抜き治具４１及びヒューズ抜き構造について説明する。なお、上記第１実施形態と同構成部分については図面に同符号を付して重複した説明を省略する。
【００３９】
本実施形態のヒューズ抜き治具４１は、図９に示すように、操作基部４２と、この操作基部４２の両側に一体に形成されて操作基部４２と共に、円弧状に形成された一対の脚部４３ａ、４３ｂと、一対の脚部４３ａ、４３ｂの先端部にそれぞれ形成された係合部としての押し上げ爪部４４ａ、４４ｂとで構成され、全体形状がＣ字状に形成されている。押し上げ爪部４４ａ、４４ｂは、操作基部４２側、すなわち内側に向けて突設されている。
【００４０】
一方、このヒューズ抜き治具４１が用いられる電気接続箱２３のヒューズ装着部４５には、図８、図１０に示すように、その周囲に抜き治具装着孔４６が形成されている。この抜き治具装着孔４６は、ヒューズ本体６ｃが収容される本体収容部４７の両側に突出して設けられている。この抜き治具装着孔４６内の幅寸法は、ヒューズ抜き治具４１の一対の脚部４３ａ、４３ｂ間の寸法と略等しく設定されている。
【００４１】
次に本実施形態のヒューズ抜き治具４１を用いて、ヒューズ６をヒューズ装着部４５から抜き出す手順について説明する。
【００４２】
図１１（ａ）に示すように、抜き治具装着孔４６内にヒューズ抜き治具４１を挿入する。この場合、一対の脚部４３、４３間にヒューズ６の頭部６ａ及びヒューズ本体６ｃが挿入され、一対の脚部４３ａ、４３ｂは抜き治具装着孔４６の内壁４６ａ、４６ｂにそれぞれ当接している。また、一対の押し上げ爪部４４ａ、４４ｂはヒューズ本体６ｃの下部側に係合する。
【００４３】
この状態から、図１１（ｂ）に示すように、操作基部４２をヒューズ装着部４５側に押圧する。操作基部４２をヒューズ装着部４５側に押圧すると、一対の脚部４３ａ、４３ｂは、外側に広がろうとするが、抜き治具装着孔４６の内壁４８ａ、４８ｂにその移動が規制されるため、下部側に移動する。一対の脚部４３ａ、４３ｂが下部側に移動すると、一対の脚部４３ａ、４３ｂの下部側は、抜き治具装着孔４６の底壁４８ｃに当接し先端部が上方に移動する。この結果、図１１（ｃ）に示すように、一対の押し上げ爪部４４ａ、４４ｂがヒューズ本体６ｃを上方に押し上げるので、ヒューズ６の端子部６ｂは、ブスバー２４の端子部２６から抜き出る。そして、ヒューズ抜き治具４１と共に、ヒューズ６をヒューズ装着部４５から抜き出す。
【００４４】
本実施形態のヒューズ抜き治具４１によれば、操作基部４２をヒューズ装着部４５側に向けて押圧すれば、一対の脚部４３ａ、４３ｂの作用によりヒューズ６がヒューズ装着部４５から外れるので、ヒューズ抜き作業が容易になる。
【００４５】
また、抜き治具装着孔４６内に、ヒューズ抜き治具４１を挿入すれば、押し上げ爪部４４ａ、４４ｂをヒューズ本体６ｃの下部側に確実に係合させることができ、さらに、操作基部４２をヒューズ装着部４５側に向けて押圧すれば、その係合がより確実になる。
【００４６】
また、本実施形態のヒューズ抜き治具４１は、操作基部４２を一回押圧する力のみ必要であり、従来のようにヒューズ装着部４５からヒューズ６を抜き取るための力が不要になるので、ヒューズ抜き作業が容易になり、作業性が向上する。
【００４７】
【発明の効果】
以上説明したように請求項１の発明によれば、操作基部をヒューズ装着部側に向けて押圧することで、弾性伸縮部が収縮し係合部がヒューズの頭部に容易に係合する。また、操作基部への押圧をやめると、弾性収縮部の伸張によりヒューズがヒューズ装着部から抜き出る。従って、ヒューズの頭部に確実に係合することができて、ヒューズ抜き作業が容易となり、作業性が向上する。
【００４８】
また、係合部がヒューズの頭部からはずれないように一対の脚部を強くつまむ必要はなく、操作基部をヒューズ装着部側へ押圧するだけで、一対の脚部の作用により、ヒューズをヒューズ装着部から容易に抜き出すことができ、作業性が向上する。
【００４９】
さらに、操作基部が可撓性を有しているため操作基部が撓んで係合部（アーム）が拡開することにより、係合部がヒューズの頭部に係合すると共に、操作基部を押圧することで一対の脚部の弾性伸縮部が収縮し、係合部がヒューズの頭部に容易に近づき、より確実に係合する。
【００５０】
請求項２の発明によれば、ヒューズ抜き治具を抜き治具装着孔に挿入し、操作基部をヒューズ装着部側に押圧すれば、一対の脚部の作用によりヒューズがヒューズ装着部から容易に抜き出すことができ、作業性が向上する。
【００５１】
請求項３の発明によれば、操作基部を押圧したとき、円弧状に形成された一対の脚部が抜き治具装着孔の内壁に当接し、先端部の押し上げ爪部がヒューズ本体の下部側に当接して、ヒューズを上方に押し上げるため、ヒューズをヒューズ装着部から容易に抜き出すことができ作業性が向上する。
【００５２】
請求項４の発明によれば、弾性伸縮部の収縮により係合部がヒューズの頭部に係合し、弾性伸縮部の伸張動作によりヒューズがヒューズ装着部から容易に抜き出るので、作業性が向上する。
【００５３】
請求項５の発明によれば、ヒューズ抜き治具を抜き治具装着孔内に挿入し、操作基部を押圧すると、この押圧力により一対の脚部を伝わって押し上げ爪部に伝わり、ヒューズ本体の下部側から押し上げるので、ヒューズをヒューズ装着部から容易に抜き出すことができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態のヒューズ抜き治具と、このヒューズ抜き治具により抜き出されるヒューズが装着された電気接続箱を示し、（ａ）は斜視図、（ｂ）は断面図である。
【図２】第１実施形態のヒューズ抜き治具とこのヒューズ抜き治具により抜き出されるヒューズとの関係を示す断面図である。
【図３】第１実施形態のヒューズ抜き治具とこのヒューズ抜き治具により抜き出されるヒューズとの関係を示す平面図である。
【図４】第１実施形態のヒューズ抜き治具によるヒューズ抜き出し手順を示し、（ａ）はヒューズ抜き治具をヒューズ装着部に装着した状態を示す断面図、（ｂ）は操作基部をヒューズ装着部側に向けて押圧した状態を示す断面図、（ｃ）は操作基部への押圧状態を解除した状態を示す断面図である。
【図５】第１実施形態のヒューズ抜き治具を示す斜視図である。
【図６】第１実施形態のヒューズ抜き治具の変形例を示す斜視図である。
【図７】第１実施形態のヒューズ抜き治具の他の変形例を示す斜視図である。
【図８】本発明の第２実施形態のヒューズ抜き治具と、このヒューズ抜き治具により抜き出されるヒューズが装着された電気接続箱を示し、（ａ）は斜視図、（ｂ）は断面図である。
【図９】第２実施形態のヒューズ抜き治具とこのヒューズ抜き治具により抜き出されるヒューズとの関係を示す断面図である。
【図１０】第２実施形態のヒューズ抜き治具とこのヒューズ抜き治具により抜き出されるヒューズとの関係を示す平面図である。
【図１１】第２実施形態のヒューズ抜き治具の抜き出し手順を示し、（ａ）はヒューズ抜き治具をヒューズ装着部に装着した状態を示す断面図、（ｂ）は操作基部をヒューズ装着部側に向けて押圧した状態を示す断面図、（ｃ）は操作基部への押圧状態を解除した状態を示す断面図である。
【図１２】従来のヒューズ抜き治具によるヒューズ抜き手順を示し、（ａ）はヒューズ抜き治具をヒューズの上部に配置した状態を示す側面図、（ｂ）はヒューズ抜き治具をヒューズの頭部に係合した状態を示す側面図、（ｃ）はヒューズ抜き治具を上方に引き上げてヒューズをヒューズ装着部から抜き出した状態を示す側面図である。
【図１３】従来の他の形状のヒューズ抜き治具を示す斜視図である。
【符号の説明】
６ヒューズ
６ａ頭部
６ｂ端子部
１３、４１ヒューズ抜き治具
１４、４２操作基部
１５ａ、１５ｂ、４３ａ、４３ｂ一対の脚部
１６、４５ヒューズ装着部
１７係合部
１８ａ、１８ｂ一対の弾性伸縮部
１９ａ、１９ｂ当接端
２０ａ、２０ｂ一対の係合爪部
４４ａ、４４ｂ一対の押し上げ爪部
４６抜き治具装着孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fuse removal jig and a fuse removal structure for removing a fuse attached to a fuse attachment portion.
[0002]
[Prior art]
12 (a), 12 (b), and 12 (c) show the fuse removal jig 1 and the fuse removal structure described in Japanese Utility Model Laid-Open No. 2-5854. The fuse removing jig 1 is formed at a pair of leg portions 2a, 2b, a flexible connecting portion 3 that connects these leg portions 2a, 2b, and a tip portion of the pair of leg portions 2a, 2b. The engaging claw portions 4a and 4b are formed.
[0003]
In order to extract the blade-type fuse 6 mounted on the fuse mounting portion 5 by using the fuse extraction jig 1, the fuse extraction jig 1 is placed above the fuse 6 as shown in FIG. 12B, the fuse removing jig 1 is moved to the head 6a side of the fuse 6, and the head 6a is inserted between the pair of leg portions 2a and 2b. At this time, since the connecting portion 3 has flexibility, the space between the pair of leg portions 2a and 2b is opened. When the head 6a of the fuse 6 is inserted between the pair of legs 2a and 2b, the engaging claws 4a and 4b are engaged with the lower surface side of the head 6a. From this state, as shown in FIG. 12C, the fuse 6 is pulled out of the fuse mounting portion 5 by pulling the fuse extraction jig 1 upward.
[0004]
FIG. 13 shows a fuse removing jig 7 described in Japanese Utility Model Laid-Open No. 5-66860. Similarly to the above-described fuse removing jig 1, the fuse removing jig 7 also includes a pair of leg portions 8a and 8b, a flexible connecting portion 9 that connects these leg portions 8a and 8b, and a leg portion 8a, It consists of engaging claws 10a and 10b provided at the tip of 8b. Further, the fuse removing jig 7 is provided with engaging claws 11a and 11b for extracting a mini fuse smaller than the blade type fuse. Further, in the fuse removing jig 7, a protrusion 12 for pressing the head 6a of the fuse 6 is provided on the inner surface side of the pair of leg portions 8a and 8b, thereby improving the workability when removing the fuse. .
[0005]
[Problems to be solved by the invention]
However, in each of the fuse removing jigs 1 and 7 described in the above publications, the engaging claws 4a, 4b, 10a, and 10b are engaged with the lower surface side of the head 6a of the fuse 6, Since it pulls up, when it pulls up upwards, between a pair of leg part 2a, 2b, 8a, 8b may spread, and engagement claw part 4a, 4b, 10a, 10b may remove | deviate from the lower surface side of the head 6a. Further, when the space between the pair of leg portions 4a, 4b, 10a, and 10b is widened, the engaging portions of the engaging claws 4a, 4b, 10a, and 10b to the head portion 6a are reduced. Since a large force is applied to the engaging portion, the engaging claws 4a, 4b, 10a, and 10b may be broken.
[0006]
Further, by firmly grasping the pair of leg portions 2a, 2b, 8a, 8b, a sufficient engagement portion of the engaging claw portions 4a, 4b, 10a, 10b with the head 6a is secured, and slipping and cracking are prevented. However, in this case, since the pair of legs 2a, 2b, 8a, 8b is pulled firmly upward, the burden on the finger is increased, and the work for removing the fuse is troublesome. is there.
[0007]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a fuse extraction jig and a fuse extraction structure that can be reliably engaged with the head of the fuse and facilitate the fuse extraction operation.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention of claim 1 is a fuse removal jig for extracting a fuse attached to a fuse attachment portion, and has an operation base and flexibility formed integrally with the operation base. and a pair of leg portions, Ri Do from the fuse engageable portion withdrawing from the fuse mounting portion by the action of the leg portion by the pressing of the fuse mounting portion of the head and engages the operating base of the fuse, the pair Are extended in the same direction from both sides of the operation base, and an elastic expansion / contraction part is provided in the middle part of the pair of leg parts. A contact end that contacts the periphery of the fuse mounting portion is provided, and the engagement portion projects from the back side of the operation base between the pair of leg portions, and the engagement portion is an elastic expansion / contraction portion of the leg portion. The fuse head and And a pair of engaging claws for extracting the fuse from the fuse mounting portion by extension of the elastic expansion / contraction portion, the operation base portion is flexible, and the elastic expansion / contraction portion by pressing toward the fuse mounting portion side Is contracted, the operating base is bent, the engaging portion is expanded, and the pair of engaging claws are engaged with the head of the fuse .
[0009]
In this fuse removing jig, the operation base is pressed toward the fuse mounting portion with the engaging portion engaged with the head of the fuse. When the operation base portion is pressed toward the fuse mounting portion, the engaging portion pulls out the fuse from the fuse mounting portion by the action of the pair of leg portions due to the pressing of the operation base portion. In this case, it is not necessary to firmly pinch the pair of legs so that the engaging part does not come off the head. Once the engaging part is engaged with the head of the fuse, this engaged state does not come off. There is no need to make it. Further, it is not necessary to pull up the operation base with respect to the fuse mounting portion. Conversely, if the operation base portion is pressed toward the fuse mounting portion side, the pair of legs act by this pressing, and the engaging portion removes the fuse from the fuse mounting portion. Extract.
[0011]
Further, in the fuse removal jig , a fuse removal jig is disposed above the fuse attached to the fuse attachment portion, and the contact ends of the pair of leg portions are brought into contact with the periphery of the fuse attachment portion. From this state, when the operation base is pressed toward the fuse mounting part, the elastic expansion / contraction part contracts and the engagement part engages with the head of the fuse. When the pressure on the operation base is stopped, the engaging part moves away from the fuse mounting part due to the extension operation for the elastic expansion / contraction part to return to its original shape, so that the head moves away from the fuse mounting part. Move in the direction of fuse removal. As a result, the engaging portion extracts the fuse from the fuse mounting portion.
[0012]
In this case, it is not necessary to firmly pinch the pair of legs so that the engaging part does not come off from the head of the fuse, and the fuse is removed by the action of the pair of legs simply by pressing the operation base toward the fuse mounting part. It can be easily removed from the fuse mounting part.
[0014]
Further, in this fuse removing jig, the operation base is pressed toward the fuse mounting portion, whereby the engagement portion on the back surface side of the operation base is engaged with the fuse head. In this case, the engaging portion Nde operation base for operating the base is flexible wrinkles expanding, the engaging portion is engaged with the head of the fuse, the fuse mounting portion operating base By pressing to the side, the elastic expansion and contraction portions of the pair of leg portions contract, and the engagement portion approaches the head portion of the fuse and engages.
[0015]
The invention of claim 2 is a fuse removal jig for extracting a fuse attached to a fuse attachment portion, wherein an operation base, a pair of flexible legs integrally formed with the operation base, An engaging portion that engages with the head of the fuse and pulls out the fuse from the fuse mounting portion by the action of the leg by pressing the operation base toward the fuse mounting portion , and the pair of legs is the operation base both sides is inserted into the removal jig mounting hole surrounding the fuse mounting portion is formed integrally of, those at the bottom side of the fuse body the engagement portion is provided on each of the front end side of the pair of legs The pressing force to the fuse mounting portion side of the operation base portion is transmitted through the pair of leg portions, and has a push-up claw portion that pushes the fuse from the fuse mounting portion and extracts it.
[0016]
In this fuse removing jig , the operation base is pressed toward the fuse mounting portion with the engaging portion engaged with the head of the fuse. When the operation base portion is pressed toward the fuse mounting portion, the engaging portion pulls out the fuse from the fuse mounting portion by the action of the pair of leg portions due to the pressing of the operation base portion. In this case, it is not necessary to firmly pinch the pair of legs so that the engaging part does not come off the head. Once the engaging part is engaged with the head of the fuse, this engaged state does not come off. There is no need to make it. Further, it is not necessary to pull up the operation base with respect to the fuse mounting portion. Conversely, if the operation base portion is pressed toward the fuse mounting portion side, the pair of legs act by this pressing, and the engaging portion removes the fuse from the fuse mounting portion. Extract. Specifically, the fuse vent jig, by pressing the operation base, and is elastically extensible portion contracts, by operating base flexes, the pair of engagement claws at the bottom side of the fuse body person Touch. When the operation base portion is no longer pressed toward the fuse mounting portion, the elastic expansion / contraction portion expands, and the bending of the operation base portion returns to the original state, whereby the fuse is pulled upward and pulled out of the fuse mounting portion.
[0017]
The invention of claim 3 is the invention of claim 2 , characterized in that the pair of legs are formed in an arc shape together with the operation base with the operation base in between.
[0018]
In this fuse removal jig, when a fuse extraction jig formed in an arc shape is inserted into the extraction jig installation hole, and the operation base is pressed toward the fuse installation part, the pair of legs are formed in the extraction jig installation hole. Abutting on the inner wall, the push-up claw at the tip of the inner wall abuts on the lower surface side of the fuse head. Further, when the operation base is pressed toward the fuse mounting portion, the push-up claw pushes the head of the fuse upward, so that the fuse is pulled out from the fuse mounting portion.
[0019]
A fourth aspect of the present invention, a fuse vent structure using a fuse vent jig according to claim 1, on both sides of the terminal insertion opening fuse terminal portion of the fuse mounting portion is inserted, the abutment end It is characterized in that a groove portion into which is inserted is provided.
[0020]
In this fuse extraction structure, the contact end of the fuse extraction jig is inserted into the groove, and the operation base of the fuse extraction jig is pressed to contract the elastic expansion / contraction part. When the elastic expansion / contraction part is contracted, the pair of engaging claws engages the head of the fuse. When the pressing to the operation base is stopped, the operation base moves upward due to the extension of the elastic expansion / contraction part, and accordingly, the fuse is pulled out from the fuse mounting part.
[0021]
Invention of Claim 5 is a fuse extraction structure using the fuse removal jig of Claim 2 or Claim 3 , Comprising: On both sides of the terminal insertion port in which the terminal part of the fuse of the said fuse mounting part is inserted A punching jig mounting hole for receiving a pair of legs is formed.
[0022]
In this fuse draining structure is inserted into the jig mounting the piercing fuse removal jig, when pressing the operating base, transmitted to the claw portion pushed up transmitted a pair of legs by this pressing force, the lower portion side of the fuse body Push up from. As a result, the fuse is extracted from the fuse mounting portion.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a fuse extraction jig and a fuse extraction structure according to the present invention will be described.
[0024]
1st Embodiment FIG.1 and FIG.2 shows the fuse extraction structure 13 from which the fuse 6 is extracted using this fuse extraction jig | tool 13 and this fuse extraction jig | tool 13 of 1st Embodiment.
[0025]
As shown in FIGS. 1A, 1B and 2, the fuse removing jig 13 includes an operation base 14 and a pair of flexible leg portions 15 a formed integrally with the operation base 14. 15b, and an engaging portion 17 that engages with the head portion 6a of the fuse 6 and extracts the fuse 6 from the fuse mounting portion 16 by the action of the legs 15a and 15b by pressing the operation base portion 14 toward the fuse mounting portion side.
[0026]
The pair of leg portions 15a and 15b extend in the same direction from both sides of the operation base portion 14, and elastically extend and contract in the middle portion of the pair of leg portions 15a and 15b in the direction in which the fuse 6 is attached to and detached from the fuse mounting portion 16. The portions 18a and 18b are provided, and the contact ends 19a and 19b that contact the periphery of the fuse mounting portion 16 are provided at the tip portions. The operation base 14 and the pair of leg portions 15a and 15b are formed in a U-shaped cross section as a whole. The elastic expansion / contraction portions 18 a and 18 b are formed in a waveform and are extendable in the direction in which the contact ends 19 a and 19 b come in contact with and separate from the operation base portion 14.
[0027]
Further, as shown in FIG. 2, the engaging portion 17 includes a pair of engaging claw portions 20a and 20b protruding from the back side of the operation base portion 14 between the pair of leg portions 15a and 15b. The pair of engaging claws 20a and 20b protrude from the back surface of the operation base 14 so as to face the pair of legs 21a and 15b, respectively, and the ends of the arms 21 and 21. It is formed by the provided claws 22 and 22. The dimension between the claws 21 is set substantially equal to the width dimension of the head 6 a of the fuse 6.
[0028]
On the other hand, as shown in FIGS. 1 (a) and 1 (b), the electrical connection box 23 in which the fuse 6 is mounted and the fuse 6 is extracted by the fuse extraction jig 13 accommodates the bus bar 24 that forms the branch circuit. The connection box main body 25 and an upper cover 28 that closes the upper portion of the connection box main body 25 and has a terminal accommodating portion 27 in which the terminal portion 26 of the bus bar 24 is accommodated are formed. The surface side of the terminal accommodating portion 27 is a fuse mounting portion 16, and a terminal insertion in which the terminal portion 6 b of the fuse 6 is inserted into the terminal accommodating portion 27 is between the fuse mounting portion 16 and the terminal accommodating portion 16. A hole 29 is formed. Further, around the terminal insertion hole 29, a main body accommodating portion 30 for accommodating the fuse main body 6c of the fuse 6 is formed. In addition, groove portions 31 and 31 into which the contact ends 19a and 19b of the fuse removing jig 13 are respectively inserted are formed around the main body accommodating portion 30. As shown in FIG. 3, the groove portions 31 are formed on both sides with the main body accommodating portion 30 interposed therebetween.
[0029]
Next, a procedure for extracting the fuse 6 attached to the fuse attachment portion 16 using the fuse extraction jig 13 will be described.
[0030]
As shown in FIG. 4A, the contact ends 19 a and 19 b of the pair of leg portions 15 a and 15 b of the fuse removing jig 13 are inserted into the groove portions 31 and 31, respectively. Place at the top. From this state, as shown in FIG. 4B, the operation base portion 14 is pressed toward the fuse mounting portion 16 side. When the operation base portion 14 is pressed toward the fuse mounting portion 16 side, an intermediate portion of the operation base portion 14 is bent downward (fuse mounting portion 16 side), and the elastic expansion / contraction portions 18a and 18b contract. As a result, the pair of engaging pawls 20a, with 20b moves to the fuse mounting portion 16 side, Nde intermediate portion of the operating base portion 14 with crease that arm 21, 21 is spread outward (the engaging portion 17 is expanded By doing so , the claws 22, 22 engage with the lower surface side of the head 6 a of the fuse 6. Then, when the pressing to the operation base 14 is stopped, that is, when the finger is released from the operation base 14, the elastic expansion and contraction portions 18a and 18b extend, so that the operation base 14 is moved upward as shown in FIG. As a result, the head 6a of the fuse 6 moves upward. As a result, the terminal portion 6 b of the fuse 6 is extracted from the terminal portion 26 of the bus bar 24. The fuse 6 can be removed from the fuse mounting portion 16 by separating the fuse removing jig 13 from the fuse mounting portion 16 together with the fuse 6.
[0031]
According to the fuse removing jig 13 of this embodiment, if the operation base 14 is pressed toward the fuse mounting portion 16 side and the finger is released from the operation base 14, the action of the pair of leg portions 15a and 15b due to this pressing. Since the fuse 6 is detached from the fuse mounting portion 16, the fuse removal operation is facilitated.
[0032]
Further, by pressing the operation base portion 14 toward the fuse mounting portion 16, the pair of engaging claws 20 a and 20 b can be reliably engaged with the lower surface side of the head 6 a of the fuse 6.
[0033]
Further, the fuse removing jig 13 of this embodiment requires only a force for engaging the engaging portion 17 of the fuse removing jig 16 with the head portion 6a of the fuse 6, and the fuse mounting portion 16 as in the prior art. Since the force for removing the fuse from the power supply and the clamping force for preventing the engagement from being released are not required, the work for removing the fuse is facilitated and the workability is improved. Moreover, since an excessive force is not applied to extract the fuse 6, the pair of engaging claws 20a and 20b of the fuse extracting jig is not damaged.
[0034]
Next, a modified example of the fuse removing jig of the first embodiment will be described. FIG. 5 shows the fuse removing jig 13 of the above embodiment. The fuse removing jig 32 shown in FIG. 6 is different in the shape of the elastic expansion / contraction portions 34a and 34b provided on the pair of leg portions 33a and 33b. The elastic expansion / contraction portions 34a and 34b of the fuse removing jig 32 shown in FIG. 6 are configured by alternately providing rectangular holes 35 and 35 and wedge-shaped notches 36 and 36 in a pair of leg portions 33a and 33b. Has been. And the elastic expansion-contraction parts 34a and 34b can be expanded-contracted by bending so that the holes 35 and 35 and the notches 36 and 36 may be crushed.
[0035]
Further, the elastic expansion / contraction portions 38a and 38b of the fuse removing jig 37 shown in FIG. 7 are configured by providing long holes 40 and 40 in the middle portion of the pair of leg portions 39a and 39b. The elastic elastic parts 38a and 38b can be expanded and contracted by bending both side portions of the long holes 40 and 40 outward.
[0036]
In addition, even after the fuse 6 is extracted, the fuse 6 is engaged with the fuse extraction jig 13 so that the fuse 13 is not dropped or lost after the fuse 13 is extracted from the fuse mounting portion 16.
[0037]
Furthermore, in this embodiment, since the operation | movement of pinching the fuse extraction jig | tool 13 in order to maintain the engagement state of the fuse 6 is unnecessary, the burden on a finger | toe is reduced significantly.
[0038]
Second Embodiment Next, the fuse removing jig 41 and the fuse removing structure of the second embodiment shown in FIGS. 8 and 9 will be described. In addition, about the same component as the said 1st Embodiment, the same code | symbol is attached | subjected to drawing and the overlapping description is abbreviate | omitted.
[0039]
As shown in FIG. 9, the fuse removing jig 41 of the present embodiment includes an operation base 42 and a pair of leg portions that are integrally formed on both sides of the operation base 42 and are formed in an arc shape together with the operation base 42. 43a, 43b and push-up claw portions 44a, 44b as engaging portions formed at the tip ends of the pair of leg portions 43a, 43b, respectively, and the overall shape is formed in a C-shape. The push-up claws 44a and 44b are provided so as to protrude toward the operation base 42, that is, inward.
[0040]
On the other hand, as shown in FIGS. 8 and 10, a punching jig mounting hole 46 is formed in the fuse mounting portion 45 of the electrical connection box 23 in which the fuse punching jig 41 is used. The extraction jig mounting hole 46 is provided so as to protrude from both sides of the main body accommodating portion 47 in which the fuse main body 6c is accommodated. The width dimension in the punching jig mounting hole 46 is set to be substantially equal to the dimension between the pair of leg portions 43 a and 43 b of the fuse punching jig 41.
[0041]
Next, a procedure for extracting the fuse 6 from the fuse mounting portion 45 using the fuse extraction jig 41 of the present embodiment will be described.
[0042]
As shown in FIG. 11A, the fuse removing jig 41 is inserted into the removing jig mounting hole 46. In this case, the head 6a of the fuse 6 and the fuse body 6c are inserted between the pair of leg portions 43, 43, and the pair of leg portions 43a, 43b abut against the inner walls 46a, 46b of the extraction jig mounting hole 46, respectively. Yes. The pair of push-up claw portions 44a, 44b engages the lower side of the fuse body 6c.
[0043]
From this state, as shown in FIG. 11 (b), the operation base 42 is pressed toward the fuse mounting portion 45. When the operation base 42 is pressed toward the fuse mounting portion 45, the pair of leg portions 43a and 43b try to spread outward, but the movement is restricted by the inner walls 48a and 48b of the extraction jig mounting hole 46. Move to the bottom side. When the pair of leg portions 43a and 43b move to the lower side, the lower side of the pair of leg portions 43a and 43b comes into contact with the bottom wall 48c of the extraction jig mounting hole 46 and the tip portion moves upward. As a result, as shown in FIG. 11 (c), the pair of push-up claw portions 44 a and 44 b push up the fuse body 6 c upward, so that the terminal portion 6 b of the fuse 6 is extracted from the terminal portion 26 of the bus bar 24. Then, the fuse 6 is extracted from the fuse mounting portion 45 together with the fuse extraction jig 41.
[0044]
According to the fuse extraction jig 41 of the present embodiment, if the operation base 42 is pressed toward the fuse mounting portion 45 side, the fuse 6 is detached from the fuse mounting portion 45 by the action of the pair of leg portions 43a and 43b. Fuse removal work becomes easy.
[0045]
Further, if the fuse removal jig 41 is inserted into the removal jig mounting hole 46, the push-up claws 44a and 44b can be reliably engaged with the lower side of the fuse body 6c, and the operation base 42 can be If it presses toward the fuse mounting part 45 side, the engagement will become more reliable.
[0046]
Further, the fuse removing jig 41 of the present embodiment requires only a force that presses the operation base 42 once, and does not require a force for extracting the fuse 6 from the fuse mounting portion 45 as in the prior art. The punching work becomes easy and workability is improved.
[0047]
【The invention's effect】
As described above, according to the first aspect of the present invention, when the operation base portion is pressed toward the fuse mounting portion, the elastic expansion / contraction portion contracts and the engagement portion easily engages with the fuse head. When the pressure on the operation base is stopped, the fuse is pulled out of the fuse mounting portion due to the extension of the elastic contraction portion. Accordingly, the fuse can be reliably engaged with the head of the fuse, the work for removing the fuse is facilitated, and the workability is improved.
[0048]
In addition , it is not necessary to pinch the pair of legs so that the engaging part does not come off from the head of the fuse, and the fuse is fused by the action of the pair of legs simply by pressing the operation base toward the fuse mounting part. It can be easily extracted from the mounting portion, and workability is improved.
[0049]
Further, the engaging portion (arm) is expanding Nde operation base for operating the base is flexible flexures, the engaging portion is engaged with the head of the fuse, it presses the operating base By doing so, the elastic expansion / contraction part of a pair of leg part shrink | contracts, an engagement part approaches the head part of a fuse easily, and engages more reliably.
[0050]
According to the second aspect of the present invention, the fuse can be easily removed from the fuse mounting portion by the action of the pair of leg portions by inserting the fuse removing jig into the punching jig mounting hole and pressing the operation base toward the fuse mounting portion. The workability can be improved.
[0051]
According to the invention of claim 3, when the pressing operation base abuts the inner wall of the jig mounting piercing a pair of leg portions formed in an arc shape, the lower portion pushes up the claw portion of the fuse body of the tip portion Since the fuse is pushed up by pushing the fuse upward, the fuse can be easily removed from the fuse mounting portion, and the workability is improved.
[0052]
According to the invention of claim 4, since the engaging portion engages with the head of the fuse by contraction of the elastic expansion / contraction portion, and the fuse is easily pulled out from the fuse mounting portion by the extension operation of the elastic expansion / contraction portion, workability is improved. improves.
[0053]
According to the invention of claim 5 is inserted into the jig mounting the piercing fuse removal jig, when pressing the operating base, transmitted to the claw portion pushed up transmitted a pair of leg portions by the pressing force, the fuse body since push up from the lower side, it is possible to easily extract the fuse from the fuse mounting portion.
[Brief description of the drawings]
FIGS. 1A and 1B show a fuse extraction jig according to a first embodiment of the present invention and an electrical junction box equipped with a fuse extracted by the fuse extraction jig. FIG. 1A is a perspective view, and FIG. FIG.
FIG. 2 is a cross-sectional view showing a relationship between a fuse extraction jig of the first embodiment and a fuse extracted by the fuse extraction jig.
FIG. 3 is a plan view showing a relationship between a fuse extraction jig of the first embodiment and a fuse extracted by the fuse extraction jig.
FIGS. 4A and 4B show a procedure for extracting a fuse using the fuse extraction jig according to the first embodiment, wherein FIG. 4A is a cross-sectional view showing a state in which the fuse extraction jig is mounted on a fuse mounting portion, and FIG. Sectional drawing which shows the state pressed toward the part side, (c) is sectional drawing which shows the state which cancelled | released the pressing state to the operation base.
FIG. 5 is a perspective view showing a fuse removing jig of the first embodiment.
FIG. 6 is a perspective view showing a modification of the fuse removing jig of the first embodiment.
FIG. 7 is a perspective view showing another modification of the fuse removing jig of the first embodiment.
FIGS. 8A and 8B show a fuse extraction jig according to a second embodiment of the present invention and an electrical junction box on which a fuse extracted by the fuse extraction jig is mounted. FIG. 8A is a perspective view, and FIG. FIG.
FIG. 9 is a cross-sectional view showing a relationship between a fuse extraction jig of a second embodiment and a fuse extracted by the fuse extraction jig.
FIG. 10 is a plan view showing a relationship between a fuse extraction jig according to a second embodiment and a fuse extracted by the fuse extraction jig.
11A and 11B show a procedure for extracting a fuse removing jig according to a second embodiment, wherein FIG. 11A is a cross-sectional view showing a state where the fuse removing jig is mounted on a fuse mounting portion, and FIG. Sectional drawing which shows the state pressed toward the side, (c) is sectional drawing which shows the state which canceled the pressing state to the operation base.
FIGS. 12A and 12B show a procedure for removing a fuse using a conventional fuse removing jig, wherein FIG. 12A is a side view showing a state in which the fuse removing jig is arranged on the top of the fuse, and FIG. The side view which shows the state engaged with the part, (c) is a side view which shows the state which pulled up the fuse extraction jig | tool upward and extracted the fuse from the fuse mounting part.
FIG. 13 is a perspective view showing another conventional fuse-extracting jig.
[Explanation of symbols]
6 Fuse 6a Head 6b Terminal portion 13, 41 Fuse extraction jigs 14, 42 Operation base portions 15a, 15b, 43a, 43b A pair of leg portions 16, 45 Fuse mounting portions 17 Engaging portions 18a, 18b A pair of elastic expansion / contraction portions 19a , 19b Abutting ends 20a, 20b A pair of engaging claw portions 44a, 44b A pair of push-up claw portions 46

Claims

A fuse-extracting jig for extracting a fuse mounted on a fuse mounting portion, which is engaged with an operation base, a pair of flexible legs formed integrally with the operation base, and the head of the fuse Ri in acting of the leg portion by the pressing of the fuse mounting portion side of the operating base Do from the engaging portion to extract the fuse from the fuse mounting portion,
The pair of legs are extended in the same direction from both sides of the operation base, and an elastic expansion / contraction part is provided at the middle part of the pair of legs so as to be elastic in a direction in which the fuse is attached to or detached from the fuse mounting part. A contact end that contacts the periphery of the fuse mounting portion is provided on the portion, and the engagement portion protrudes from the back side of the operation base between the pair of leg portions, and the engagement portion is an elastic member of the leg portion. Engaging with the head of the fuse by contracting the expansion / contraction part, and having a pair of engaging claws for extracting the fuse from the fuse mounting part by extension of the elastic expansion / contraction part,
The operation base portion is flexible, and the elastic expansion and contraction portion contracts when pressed against the fuse mounting portion side, and the operation base portion is bent and the engagement portion is expanded, and the pair of engagement claws Engages with the head of the fuse.

A fuse-extracting jig for extracting a fuse mounted on a fuse mounting portion, which is engaged with an operation base, a pair of flexible legs formed integrally with the operation base, and the head of the fuse And an engaging portion that pulls out the fuse from the fuse mounting portion by the action of the leg portion by pressing the operation base toward the fuse mounting portion side,
The pair of leg portions are integrally formed on both sides of the operation base portion and inserted into a punching jig mounting hole around the fuse mounting portion, and the engaging portions are provided on the distal ends of the pair of leg portions, respectively. A pressing claw portion that contacts the lower side of the fuse body and that pushes the operating base toward the fuse mounting portion side through the pair of legs and pushes the fuse out of the fuse mounting portion. Features a fuse removal jig.

3. The fuse removing jig according to claim 2 , wherein the pair of legs are formed in an arc shape together with the operation base with the operation base interposed therebetween .

It is a fuse extraction structure using the fuse extraction jig of Claim 1, Comprising: The groove part by which the said contact end is inserted in the both sides of the terminal insertion hole in which the terminal part of the fuse of the said fuse mounting part is inserted. A fuse opening structure characterized by being provided.

The fuse removing structure using the fuse removing jig according to claim 2 or 3 , wherein the pair of leg portions are accommodated on both sides of a terminal insertion hole into which the terminal portion of the fuse of the fuse mounting portion is inserted. A fuse-extracting structure characterized in that a punching jig mounting hole is formed .