JP3632129B2

JP3632129B2 - Valve switch and valve opening / closing method

Info

Publication number: JP3632129B2
Application number: JP2001356732A
Authority: JP
Inventors: 竹司米野; 栄作粕本
Original assignee: 草竹コンクリート工業株式会社
Priority date: 2001-10-17
Filing date: 2001-10-17
Publication date: 2005-03-23
Anticipated expiration: 2021-10-17
Also published as: JP2003120850A

Description

【０００１】
【発明の属する技術分野】
本発明は、消火栓を始めとし、制水弁、仕切弁、空気弁等の各種地中埋設用機器に供する弁開閉器及びその開閉方法に関し、より詳しくは、筒状をなす棒体の先端形状を特定して、地中用弁室内にある弁開閉レバーの操作が容易に行える弁開閉器及びそれを用いた弁の開閉方法に関する。
【０００２】
【従来の技術】
従来、各種地中埋設用機器の弁を開閉するため、これに付帯した棒状の弁開閉レバーを操作する際は、該レバーを直接把持して手動により弁開閉方向に回動させるか、或いは弁開閉レバーの動作が堅い場合には、金槌等で弁開閉レバーに打撃を与えつつ回動させたり、所謂バール等略Ｌ字状をなす金物を弁開閉レバーに引っ掛け、引っ張って回動させていた。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記手動により直接操作する場合は、地表面から地中に埋設された地中用弁室内に手を延ばして前記機器の弁開閉レバーを操作しなければならず、体勢が悪くなって作業がしにくく、更に、機器が深く埋設されている場合には、上記作業が更に煩瑣になるうえに、手が届き難く又滑る等の問題があった。
又、上記打撃を与えつつ回動させる場合は、その衝撃が弁を傷める原因となるため好ましくない。而して、この種弁開閉レバーは、弁軸から傾斜した状態で保持され、その先端が地中用弁室の内壁と近接して弁開閉レバー先端からの軸方向における空間（地中用弁室の内壁までの距離）が狭くなるため、やむを得ず上記金槌等を用いる場合にあっても、かかる狭空間においては弁開閉レバーに的確な打撃を与え難い。更に又、弁開閉レバーにバール等を引っ掛けて引っ張る場合にはバール等が滑り易い。
従って、何れの場合にも動作が堅い弁開閉レバーを回動させるに必要な力を効率的に作用させ難いといった問題があった。
本発明は、上記の従来の問題に鑑みてなされたもので、弁開閉操作が地中用弁室の上部開口から行えて手間がかからず、しかも弁開閉レバーの開閉操作がスムーズに行える弁開閉器及び弁の開閉方法を提供することを目的とする。
【０００４】
【課題を解決するための手段】
上記課題を解決するため、本発明に係る弁開閉器は、弁開閉レバー１５に挿入されて該弁開閉レバー１５を中心軸として回転する筒状の先端部２の反対側末端８が、前記回転と共に円運動をなすべく筒状の先端部２に第一湾曲部４を連設して略へ字形に曲成されてなることを特徴とするものである。
上記構成からなる弁開閉器１にあっては、傾斜状態にある弁開閉レバー１５の軸方向で、その先端１５ａと地中用弁室１３の内壁１３ａ間にある空間が狭い場合にあっても、略へ字形の第一湾曲部４を上記空間に掻い潜らせることで、その長さを延設せしめた弁開閉器１を傾斜状態にある弁開閉レバー１５に挿入し、又は弁開閉レバー１５から抜き取ることができる。
又、弁開閉レバー１５に筒状の先端部２が挿入された状態で、その末端８を円運動させることが可能なために、弁開閉器１が弁開閉レバー１５を中心軸として方向変換自在となる。
【０００５】
又、本発明に係る弁開閉器は、第一湾曲部４の湾曲起点近傍から先端部２の端縁２ａ側の適宜位置に弁開閉レバー１５の先端１５ａが当接される当たり部３を設けたものであれば、弁開閉レバー１５への挿入時には、当たり部３がストッパーとなりその先端１５ａが略へ字形をなす第一湾曲部４よりも奥深くに挿入されることを阻止するために、先端部２が弁開閉レバー１５を中心軸として回転自在に保たれて弁開閉器１自体の方向変換が抵抗なく行え、又、弁開閉レバー１５からの抜き取りも容易に行える。
【０００６】
又、本発明に係る弁開閉器は、先端部２を先端に向けて漸開状に形成したものであれば、前記弁開閉レバー１５への挿入や弁開閉レバー１５からの抜き取りがより一層容易になり好ましい。
更に、本発明に係る弁開閉器は、第一湾曲部４に繋がる中間部５の他端に略逆へ字形の第二湾曲部６を設け、該第二湾曲部６にその湾曲方向で先端部２と平行若しくは非平行をなす直線状の把持部７が繋がってなる構成を採用することができる。
かかる構成からなる弁開閉器１にあっては、傾斜状態にある弁開閉レバー１５を起立せしめ、又、逆傾斜状態に傾倒させるという一連のレバー操作時に、弁開閉器１自体がその先端部２を中心とし、回転して方向変換する際の把持部７の回転半径を小さくすることができるために、その動線が短くなって開閉操作が小スペース内で迅速に行える。
更に起立状態にある弁開閉レバー１５に挿入した際には、把持部７が中間部５から屈折して上向き状を呈するために、弁開閉器１の末端がより把持し易くなるとともに、力がよく利いて弁開閉レバー１５をスムーズに回動させることができる。
【０００７】
又、本発明に係る弁開閉器は、先端部２の反対側末端８にバール片９又はキャップ体１０を設けたものであれば、地中用弁室１３内にある埋設機器１４の弁開閉レバー１５を操作するに加えて、バール片９によって地中用弁室１３の上面開口を閉塞する蓋体１１を開放し、又は、キャップ体１０によって埋設機器１４の弁開閉螺子１６を開閉することができる。即ち、１本の弁開閉器１の両端部に夫々異なった工具を具備せしめて兼用的な使用を可能となすものである。
【０００８】
更に又、本発明に係る弁の開閉方法は、筒状の先端部２に第一湾曲部４を連設して略へ字形に曲成した棒状の弁開閉器１の前記先端部２を傾斜状態の弁開閉レバー１５に挿入し、弁開閉器１と共に弁開閉レバー１５を弁開閉方向に回動させて略起立せしめた時点で、弁開閉器１の末端８を筒状の先端部２を中心として略半回転円運動させた後、弁開閉器１と共に弁開閉レバー１５を同一方向に更に回動させて逆傾斜状態となすものである。
かかる構成からなる弁の開閉方法にあっては、弁開閉器１を弁開閉レバー１５に挿入した状態のままで、弁開閉器１の回動及び回転の一連操作が可能となり、これに伴って傾斜状態にある弁開閉レバー１５を起立せしめ、又、逆傾斜状態に傾倒させるという弁の開閉が完全、且つ速やかに行える。
【０００９】
又、本発明に係る弁の開閉方法は、筒状の先端部２に第一湾曲部４を連設して略へ字形に曲成した棒状の弁開閉器１の前記先端部２を地中用弁室１３内にある略起立状態の弁開閉レバー１５に挿入し、第一湾曲部４の相対する凹、凸湾曲面側を弁開閉レバー１５の弁開閉方向に向けるとともに、先端部２の反対側末端８を前記弁室１３の上面開口から突出させるか又は該弁室１３内の上面開口付近に位置させ、弁開閉器１と共に弁開閉レバー１５を前記第一湾曲部４の凸湾曲面側に回動させて傾斜状態となすものである。
かかる構成からなる弁の開閉方法にあっては、弁開閉器１を弁開閉レバー１５に挿入した状態で、第一湾曲部４が地中用弁室１３の内壁１３ａの近くに至るまで回動させることができ、地中用弁室１３内の狭いスペースにあっても起立状態にある弁開閉レバー１５を確実に傾斜状態に傾倒させて、弁を完全に全開又は全閉することができる。
【００１０】
又、本発明に係る弁の開閉方法は、第一湾曲部４の湾曲起点近傍から先端部２の端縁２ａ側の適宜位置及び／又は弁開閉レバー１５の外側に当たり部３を設け、弁開閉器１の挿入深さを決めて操作するものであれば、弁開閉器１を弁開閉レバー１５に挿入した時点で、弁開閉器１の第一湾曲部４の湾曲起点近傍から先端部２の端縁２ａ側の適宜位置にある当たり部３ａが弁開閉レバー１５の先端１５ａに当接し、或いは、弁開閉レバー１５の外側にある当たり部３ｂが弁開閉器１の筒状の先端部２の端縁２ａに当接するために、夫々弁開閉レバー１５の先端１５ａが略へ字形をなす第一湾曲部４よりも奥深くに嵌挿して噛み込むことがなく、上記弁開閉器１の回転、円運動が支障なく行えるとともに、弁開閉レバー１５からの抜き取りも容易に行えて、一連の操作が無駄なく、且つ迅速に行える。
【００１１】
【発明の実施の形態】
以下、本発明の実施の形態を、図面を参酌しつつ説明する。
図１（イ）及び（ニ）は、本実施形態の一例に係る弁開閉器１を示す。
該弁開閉器１は、断面円形のパイプ体からなり、筒状の先端部２に略へ字形の第一湾曲部４を連設し、該第一湾曲部４に繋がってその末端８に至る部分を直線状で長尺の把持部７となす、又、前記先端部２はその端縁２ａ（非湾曲側）に向けて漸開状に形成され、且つ前記第一湾曲部４の湾曲起点近傍には、パイプの径方向に向け丸リベットが貫設されて当たり部３ａを構成している。
【００１２】
図１（ロ）及び（ニ）は、本発明の他実施形態に係る弁開閉器１を示し、該弁開閉器１もパイプ体の先端部２に略へ字形の第一湾曲部４を連設し、該第一湾曲部４に繋がる後部を直線状で長尺の中間部５となすとともに、その他端側に略逆へ字形の第二湾曲部６を設け、且つ該第二湾曲部６に繋がりその末端８に至る部分を直線状の把持部７となす断面円形の棒状体からなる。
即ち、直線状の中間部５の両端が互いに逆方向に湾曲されることにより、第一湾曲部４と第二湾曲部６が形成され、該第一湾曲部４及び第二湾曲部６の湾曲角度α１，α２が夫々異なり、前記把持部７が第二湾曲部６の湾曲方向で先端部２と非平行をなしている。
【００１３】
図１（ハ）及び（ニ）は、上記他実施形態に係る弁開閉器の変形例を示し、当該弁開閉器１は、前出の図１（ロ）に示す弁開閉器における第一湾曲部４及び第二湾曲部６の湾曲角度を夫々同一の狭角となし（湾曲角度α１＝α３、α２＝α３）、その中間部５を短くなすとともに、先端部２と平行となる把持部７を直線状に長く延設成形（図１（ハ）ではその中位を省略記載、全容は図７に明記）してその末端８に至ってなる。
而して、上記図１（ロ）及び（ハ）の場合も前記図１（イ）と同様に、先端部２はその端縁２ａ（非湾曲側）に向けて漸開状に形成され、又、第一湾曲部４の湾曲起点近傍に当たり部３ａを有してなる。
【００１４】
前記各実施形態における弁開閉器１の断面形状は一例で、かかる断面形状は所定の目的を果たす範囲内で適宜変更可能であり、例えて筒状の先端部２は、後述するように該先端部２を挿入する弁開閉レバー１５の断面形状に応じ、弁開閉レバー１５を中心軸として回動可能な形状であればよく、又、当たり部３ａを設ける構成は必須の条件ではないが、例えて図２（イ）乃至（ニ）に示す如く、円筒体自体を内腔側に窪めて形成したもの（同図（イ））、筒状体の内腔に板状体を固着したもの（同図（ロ）及び（ハ））、及び先端部２を端縁２ａ側で漸開しない袋体により形成し、その有底部を当たり部３ａとなすものの他、後述するように弁開閉レバー１５の先端１５ａと当接して、該弁開閉レバー１５に挿入される弁開閉器１の挿入深さを決められるものであればその具体的な態様は問わないが、前記先端１５ａとの接触度合いが少ないもの程、前記弁開閉器１自体の回動、円運動時に抵抗が小さく好ましい。
又、当たり部３ａは、第一湾曲部４の湾曲起点近傍に限らず、前記近傍から先端部２の端縁２ａ側の適宜位置に設けられ、先端部２内に弁開閉レバー１５が挿入可能となされるとともに、その先端１５ａが当接されるようになされておればよい。更に、先端部２に連設される部位は筒体の他、例えて図２（ニ）に示す如き中実で任意の断面形状からなる棒体であっても殊更問題はない。
更に又、当該弁開閉器１は金属製、樹脂製等、所望の性能に応じて任意の材質から構成されればよい。
【００１５】
次に、上記弁開閉器１を使用して弁を開閉する方法について説明する。
まず、図１（イ）に示す弁開閉器１を使用する場合、図３（イ）乃至（ハ）に示す如く、各ブロック体１２を組積して形成した地中用弁室１３内の下位に位置する埋設機器１４としての消火栓に付帯する弁開閉レバーｌ５（断面円形の棒体）に、地中用弁室１３の上面開口からその把持部７を把持して弁開閉器１を差し入れるとともに、左傾斜状態（弁が全開の状態）にある弁開閉レバー１５の軸方向で、その先端１５ａと地中用弁室１３の内壁１３ａ間にある空間へ略へ字形の第一湾曲部４を掻い潜らせて筒状の先端部２を弁開閉レバー１５に挿入すると、弁開閉器１の当たり部３ａが弁開閉レバー１５の先端１５ａに当接してその挿入が停止される（▲１▼の状態）。
続いて、同図（ニ）に示す如く、弁を全閉の状態（弁開閉レバー１５が右傾斜状態）となすべく、地中用弁室１３の上面に突出する把持部７を把持して弁開閉器１と共に弁開閉レバー１５を右方向に略半分回動させ、弁開閉レバー１５が起立して垂直となった時点（▲２▼の状態）で、弁開閉器１の末端８をその先端部２を中心として略半回転（略１８０度）円運動させる（▲３▼の状態）。
更に、この状態を保持して弁開閉器１を右方向に回動させることで、弁開閉レバー１５は右傾斜状態（▲４▼の状態）となって、弁が完全に閉められる。
而して、前記図３（イ）乃至（ハ）に示す挿入手順の逆手順をもって弁開閉器１を弁開閉レバー１５から抜き取ることにより、一連の弁操作が終了する。
【００１６】
又、上記操作と逆手順によって弁開閉器１を右から左方向に回動させれば、弁開閉レバー１５を左傾斜状態となして、弁を完全に開くことができる。
ここで、弁開閉器１の挿入、抜き取りに際しては、地中用弁室１３内での空間が狭くても、略へ字形をなす第一湾曲部４以下の先端部２をその空間で弧状に運動させることにより支障なく行えるとともに、その端縁２ａで漸開する先端部２が弁開閉レバー１５との挿通性を高め、又、挿入された弁開閉器１は、弁開閉レバー１５の先端１５ａと当接する当たり部３ａにより必要以上に嵌挿されて噛み込むことがないので、抜き取り容易となる。
又、上記当接状態により、先端部２を、弁開閉レバー１５を中心軸として回転自在となすものである。
【００１７】
図４に示す場合は、地中用弁室１３の高さが高く、深い位置に設置された埋設機器１４の弁開閉レバー１５を操作するもので、この場合も前記図３における操作と同様の一連の操作を行えばよいが、図４に示す如く、弁開閉器１と共に右方向に略半分回動させた弁開閉レバー１５が略起立した時点（▲２▼の状態）で、弁開閉器１の末端８をその先端部２を中心として略半回転（略１８０度）円運動させると同時に、弁開閉レバー１５を少し右傾斜させて（▲３▼の状態）、更に弁開閉器１を右方向に回動させることで、弁が完全に閉められてなる（▲４▼の状態）。
ここで、埋設機器１４は地表面から深くにあり、且つ弁開閉レバー１５の回動方向である地中用弁室１３の内幅が狭いために、かかる弁開閉レバー１５を従来の方法（手動又は金槌、バール等）で操作することは困難となるが、当該弁開閉器１によれば、図４に示す如くその末端８が地中用弁室１３の上面から突出せずに上面開口付近に位置した把持部７を地中用弁室１３内で把持して操作することにより、前記弁開閉レバー１５を容易、且つ確実に開閉することができる。
【００１８】
又、前記図１（ロ）及び（ハ）に示す弁開閉器１を使用する場合も、図５乃至図７に示す如く、夫々前記図３及び図４における操作と同様の一連の操作（夫々▲１▼乃至▲４▼の状態）を行えばよい。
而して、当該弁開閉器１には夫々第二湾曲部６が設けられ、又、これに把持部７が繋がり末端８に至ってなるために、弁開閉レバー１５が略起立した時点（夫々▲２▼の状態）で、弁開閉器１自体がその先端部２を中心とし、略半回転（略１８０度）円運動して方向変換する際の末端８における回転半径を小さくすることができるので、その動線が短くなって操作が小スペース内で行えるという利点がある。
特に、図１（ハ）及び図７に示す弁開閉器１にあっては、その中間部５が短く形成され、且つ第一湾曲部４及び第二湾曲部６の湾曲角度（α３）を夫々同一の狭角となしているので、前記方向変換時に把持部７も略垂直に起立してその回転半径がより小さくなるとともに、把持部７が長く延設成形されてなるので、末端８寄りを把持すれば動作が堅い弁開閉レバー１５を微力で回動可能になすという優位性がある。
【００１９】
又、前記各実施形態においては、最初から傾斜状態（弁が全開又は全閉の状態）にある弁開閉レバー１５を一旦起立状態にした後、更に逆傾斜状態にして弁の開閉を行っているが、最初から起立又は略起立状態（弁が半開きの状態）にある弁開閉レバー１５にあっても、当該弁開閉器１を用いてこれを傾斜状態となすことができる。
例えば、前記図１（イ）に示す弁開閉器１を使用する図３（ニ）において、仮に弁開閉レバー１５が最初から開閉途中の起立状態にあるとすれば、地中用弁室１３の上面開口から弁開閉器１を差し入れ、筒状の先端部２を略垂直状にして上方から弁開閉レバー１５に挿入すると、前記と同様に弁開閉器１の当たり部３ａが弁開閉レバー１５の先端１５ａに当接してその挿入が停止され、且つ第一湾曲部４の相対する凹、凸湾曲面側を弁開閉レバー１５の弁開閉方向に向け（▲３▼の状態）、続けて把持部７を把持して弁開閉器１と共に弁開閉レバー１５を第一湾曲部４の凸湾曲面側、即ち同図で右方向に回動させることで右傾斜状態（▲４▼の状態）となって、弁が完全に閉じられる。又、前記図４乃至図７においても、弁開閉レバー１５が最初から略起立又は起立状態にある場合もこれと同様（▲３▼乃至▲４▼の状態）にすればよい。
而して、該実施形態では、弁開閉器１の第一湾曲部４に連設した先端部２を起立又は略起立状態の弁開閉レバー１５に挿入して弁開閉器１を第一湾曲部４の凸湾曲面側に回動させるため、前記図３（ニ）や図４乃至図７で▲３▼乃至▲４▼の状態として示す如く、第一湾曲部４が地中用弁室１３の内壁１３ａの近くに至るまで弁開閉器１を回動でき、その回動範囲をできるだけ広くして弁開閉レバー１５を速やかに傾斜状態となすものである。
【００２０】
尚、上記埋設機器１４としての消火栓は、外部に軸支された弁開閉レバー１５の回動操作により内蔵せる弁を開閉して放水及び止水を行う構造のものであって、該弁開閉レバー１５は全開状態（左傾斜時）から全閉状態（右傾斜時）まで略９０度の回動範囲に設定されてなるものであるが、かかる埋設機器１４は上記消火栓に限定されず、弁軸を中心として回動作動する弁開閉レバー１５を具備するものであれば、如何なる機種であってもよいし、その回動範囲も上記のものに限定されず、例えて起立又は略起立状態で全開又は全閉状態、傾斜状態で全閉又は全開状態となるものの他、適宜に設定されるものであってもよい。
又、前記各実施形態における、弁開閉器１の略へ字形の第一湾曲部４、第二湾曲部６、中間部５及び把持部７の夫々の形状、並びに第一湾曲部４及び第二湾曲部６の各湾曲角度α乃至α３やその形成位置も前記実施形態のものに限定されず、埋設機器１４を保護する地中用弁室１３の高さやこれを形成するブロック体１２の寸法、形状等に応じて適宜変更可能である。
【００２１】
更に、上記各実施形態においては、弁開閉レバー１５に挿入される弁開閉器１の挿入深さを弁開閉器１に設けた当たり部３ａにより制限したが、かかる挿入深さは弁開閉レバー１５の外側に設けた当たり部３ｂに弁開閉器１の先端部２の端縁２ａを当接せしめて制限することも可能で、例えて図８（イ）乃至（ニ）に示す如く、弁開閉レバー１５の先端１５ａを縮径して外周面に段部を凹設してなるもの（同図（イ））、先端１５ａから離隔した外周面に凸部を連続又は分断して設けたもの（同図（ロ））、及び先端１５ａから離隔した位置で弁開閉レバー１５の径方向に向け棒状体が貫設されて、その両端が外側に突出したもの（同図（ハ）及び（ニ））等、適宜形状になすことができる。
【００２２】
次に、弁開閉器１の他実施形態を説明すると、先ず図９（イ）及び（ロ）に示す弁開閉器１は、筒状の先端部２の反対側末端８、即ち、略へ字形の第一湾曲部４に繋がる把持部７の末端８に角筒形で袋状をなすキャップ体１０が一体的に設けられてなるものである。
而して、上記弁開閉器１は、図９（ホ）に示す如く、前出の埋設機器１４としての消火栓の他、仕切弁等に併設される弁開閉螺子１６を回転させてその弁を開閉すべく、埋設機器１４から垂設せる弁開閉螺子１６に、地中用弁室１３の上面開口からその把持部７を把持して弁開閉器１を差し入れ、末端８にあるキャップ体１０を嵌挿させるとともに、先端部２を回動させて使用するものである。
又、同図に破線で示す如き先端部２と把持部７を略平行となす弁開閉器１によれば、先端部２をハンドルとして容易に回動できると同時に、大きな回転力を弁開閉螺子１６に作用させることができる。
尚、上記角筒形をなすキャップ体１０の形状は自由で、該キャップ体１０を嵌挿する弁開閉螺子１６の形状に相応して、該弁開閉螺子１６を回転させられるものであれば良い。
【００２３】
又、図９（ハ）及び（ニ）、図１０（イ）及び（ロ）に示す弁開閉器１の末端８にはバール片９が一体的に連設されてなる。更に詳しくは、図９（ハ）及び（ニ）におけるバール片９は、把持部７の末端８で舌片状を呈してなり、又、図１０（イ）及び（ロ）におけるバール片９は、第二湾曲部６に繋がる把持部７の末端８を舌片状に形成し、その先端を屈折して上向かせるとともに、該所の上面に膨出部１７を、又、下面に支持座１８を設け、且つ第二湾曲部６の狭角側に補強材１９を設けてなるものである。
而して、上記弁開閉器１は、図１０（ハ）乃至（ヘ）に示す如く、前出の地中用弁室１３の上面開口を閉塞せる蓋体１１に設けたバール孔１１ａにそのバール片９を挿入し、梃子作用をもって蓋体１１を地中用弁室１３から開放せしめるものである。
ここで、図１０（イ）及び（ロ）に示す弁開閉器１の場合は、同図（ホ）及び（ヘ）に示す如くバール孔１１ａに追設された凹陥部１１ｂに、バール片９の上面にある膨出部１７が嵌合してバール孔１１ａに挿入されたバール片９の位置決めがなされ、又、地中用弁室１３の上面に当接する支持座１８が支点となって梃子作用が良く利くとともに、第二湾曲部６にある補強材１９が弁開閉器１の屈曲変形を防止する等の作用を奏するために、蓋体１１の開放が更に容易となる。
即ち、上記他実施形態に係る各弁開閉器１によれば、その先端部２によって埋設機器１４の弁開閉レバー１５を回動せしめるのに加えて、キャップ体１０による弁開閉螺子１６の開閉操作、又はバール片９による蓋体１１の開放作業が併せて行えるのである。
【００２４】
【発明の効果】
本発明に係る弁開閉器は、弁開閉レバーに挿入されて該弁開閉レバーを中心軸として回転する筒状の先端部の反対側末端が、前記回転と共に円運動をなすべく筒状の先端部に第一湾曲部を連設して略へ字形に曲成されてなるために、傾斜状態にある弁開閉レバーの軸方向で、弁開閉レバーの先端と地中用弁室の内壁間に形成される空間が狭い場合にあっても、前記略へ字形に曲成されてなる第一湾曲部を上記空間に掻い潜らせることで、その長さを長く形成した弁開閉器を傾斜状態にある弁開閉レバーに挿入し、或いは弁開閉レバーから確実に抜き取ることができる。
【００２５】
又、本発明に係る弁開閉器は、第一湾曲部の湾曲起点近傍から先端部の端縁側の適宜位置に弁開閉レバーの先端が当接される当たり部を設けてなるために、弁開閉レバーへの挿入時には、前記当たり部がストッパーとなり、弁開閉レバーの先端が略へ字形をなす第一湾曲部を越えて奥深くに挿入されることを阻止する。従って、弁開閉器の先端部が弁開閉レバーを中心軸として回転自在に保持されて、弁開閉器自体の方向変換が抵抗なく行えるとともに、弁開閉レバーからも抜き取り易くなる。
【００２６】
又、本発明に係る弁開閉器は、先端部を先端（非湾曲側）に向けて漸開状に形成してなるために、前記弁開閉レバーへの挿入や弁開閉レバーからの抜き取りがより一層容易に行える。
更に、本発明に係る弁開閉器は、第一湾曲部に繋がる中間部の他端に略逆へ字形の第二湾曲部を設け、該第二湾曲部にその湾曲方向で先端部と平行若しくは非平行をなす直線状の把持部が繋がってなるために、弁開閉レバーの操作時には弁開閉器自体がその先端部を中心とし回転して方向変換する際の把持部の回転半径が小さくてすみ、その開閉操作が小スペース内で迅速に行える。
更に又、起立状態をなす弁開閉レバーに挿入すると、把持部が中間部から屈折して上向き状を呈し、弁開閉器の末端がより把持し易くなるために、力がよく利いて弁開閉レバーをスムーズに回動させることができる。
【００２７】
又、本発明に係る弁開閉器は、先端部の反対側末端にバール片又はキャップ体を設けてなるために、地中用弁室内にある埋設機器の弁開閉レバーを操作するに加えて、バール片によって地中用弁室の上面に嵌合された蓋体を開放し、或いは、キャップ体によって埋設機器の弁開閉螺子を開閉することができる。即ち、１本の弁開閉器を兼用的に使用することで工具点数を減じ、又、その操作、作業を簡素化することができる。
【００２８】
更に又、本発明に係る弁の開閉方法は、筒状の先端部に第一湾曲部を連設して略へ字形に曲成した棒状の弁開閉器の前記先端部を傾斜状態の弁開閉レバーに挿入し、弁開閉器と共に弁開閉レバーを弁開閉方向に回動させて略起立せしめた時点で、弁開閉器の末端を筒状の先端部を中心として略半回転円運動させた後、弁開閉器と共に弁開閉レバーを同一方向に更に回動させて逆傾斜状態となすため、弁開閉器を地中用弁室内にある弁開閉レバーに挿入した状態のままで、弁開閉器の回動及び回転の一連操作が可能となり、これに伴って傾斜状態にある弁開閉レバーを起立せしめ、続けて逆傾斜状態に傾倒させるという弁の開閉作業が確実、且つ迅速に行える。
【００２９】
又、本発明に係る弁の開閉方法は、筒状の先端部に第一湾曲部を連設して略へ字形に曲成した棒状の弁開閉器の前記先端部を地中用弁室内にある起立又は略起立状態の弁開閉レバーに挿入し、第一湾曲部の相対する凹、凸湾曲面側を弁開閉レバーの弁開閉方向に向けるとともに、先端部の反対側末端を前記弁室の上面開口から突出させるか又は該弁室内の上面開口付近に位置させ、弁開閉器と共に弁開閉レバーを前記第一湾曲部の凸湾曲面側に回動させて傾斜状態となすため、弁開閉器を弁開閉レバーに挿入した状態で、第一湾曲部が地中用弁室の内壁の近くに至るまで回動させることができ、地中用弁室内の狭いスペースにあっても起立状態にある弁開閉レバーを確実に傾斜状態に傾倒させて、弁を完全に全開又は全閉状態となすことができる。
【００３０】
又、本発明に係る弁の開閉方法は、第一湾曲部の湾曲起点近傍から先端部の端縁側の適宜位置及び／又は弁開閉レバーの外側に当たり部を設け、弁開閉器の挿入深さを決めて操作するために、弁開閉器を弁開閉レバーに挿入した時点で、弁開閉器の第一湾曲部の湾曲起点近傍から先端部の端縁側の適宜位置にある当たり部が弁開閉レバーの先端に当接し、或いは、弁開閉レバーの外側にある当たり部が弁開閉器の筒状の先端部の端縁に当接して、それぞれ弁開閉レバーの先端が略へ字形をなす第一湾曲部よりも奥深くに嵌挿されて噛み込むことを防止する。
従って、上記弁開閉器の回転、円運動が支障なく行え、且つ弁開閉レバーからの抜き取りも容易に行えるので、一連の動作に無駄が生じず迅速に操作できる。
【図面の簡単な説明】
【図１】（イ）乃至（ハ）は本発明の一実施形態及び他実施形態に係る弁開閉器の正面図、（ニ）は（イ）乃至（ハ）におけるＡ−Ａ端面図。
【図２】（イ）、（ロ）及び（ニ）は本発明の他実施形態に係る弁開閉器を示す要部断面図、（ハ）は（ロ）におけるＢ−Ｂ端面図
【図３】（イ）乃至（ニ）は本発明の一実施形態に係る弁開閉器を使用した弁の開閉方法を示す断面図。
【図４】本発明の一実施形態に係る弁開閉器を使用した弁の開閉方法を示す断面図。
【図５】本発明の他実施形態に係る弁開閉器を使用した弁の開閉方法を示す断面図。
【図６】本発明の他実施形態に係る弁開閉器を使用した弁の開閉方法を示す断面図。
【図７】本発明の他実施形態に係る弁開閉器を使用した弁の開閉方法を示す断面図。
【図８】本発明の他実施形態に係る弁開閉器と弁開閉レバーの嵌挿状態を示し、（イ）乃至（ハ）は要部断面図、（ニ）は（ハ）において弁開閉器を嵌挿していない状態の弁開閉レバーを示すＣ−Ｃ矢視図。
【図９】（イ）及び（ハ）は本発明の他実施形態に係る弁開閉器の一部省略正面図、（ロ）及び（ニ）は同右側面図、（ホ）は同使用方法を示す断面図。
【図１０】（イ）は本発明の他実施形態に係る弁開閉器の一部省略正面図、（ロ）は同平面図、（ハ）及び（ホ）は同使用方法を示す要部断面図、（ニ）及び（ヘ）は同要部平面図。
【符号の説明】
１…弁開閉器、２…筒状の先端部、２ａ…端縁、３、３ａ、３ｂ…当たり部、４…第一湾曲部、５…中間部、６…第二湾曲部、７…把持部、８…末端、９…バール片、１０…キャップ体、１１ａ…バール孔、１４…埋設機器、１５…弁開閉レバー、１５ａ…端部、１６…弁開閉螺子[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a valve switch used for various underground devices such as a fire hydrant, a water control valve, a gate valve, an air valve, and a method for opening and closing the valve switch, and more particularly, a tip shape of a cylindrical rod body. In particular, the present invention relates to a valve switch that can easily operate a valve opening / closing lever in the underground valve chamber and a valve opening / closing method using the valve switch.
[0002]
[Prior art]
Conventionally, in order to open and close the valves of various underground devices, when operating the rod-shaped valve opening / closing lever attached thereto, the lever is directly gripped and manually rotated in the valve opening / closing direction, When the operation of the opening / closing lever is hard, it is rotated while hitting the valve opening / closing lever with a hammer or the like, or a hardware that is substantially L-shaped such as a so-called bar is hooked on the valve opening / closing lever and pulled to rotate. .
[0003]
[Problems to be solved by the invention]
However, in the case of direct operation by the above-mentioned manual operation, the hand must be operated from the ground surface into the underground valve chamber buried in the ground, and the valve opening / closing lever of the device must be operated. In addition, when the device is deeply embedded, the above-described work becomes more cumbersome, and it is difficult to reach and slips.
Moreover, when rotating while giving the said impact, since the impact causes the valve to be damaged, it is not preferable. Thus, the seed valve opening / closing lever is held in an inclined state from the valve shaft, and its tip is close to the inner wall of the underground valve chamber, and the axial space from the tip of the valve opening / closing lever (the underground valve) (Distance to the inner wall of the chamber) becomes narrow, and even when the above-described metal hammer is unavoidably used, it is difficult to hit the valve opening / closing lever accurately in such a narrow space. Furthermore, when a bar or the like is hooked and pulled on the valve opening / closing lever, the bar or the like is easily slipped.
Therefore, in any case, there has been a problem that it is difficult to efficiently apply a force necessary to rotate the valve opening / closing lever that is rigid in operation.
The present invention has been made in view of the above-described conventional problems. The valve opening / closing operation can be performed from the upper opening of the underground valve chamber so that it does not take time and the valve opening / closing lever can be opened / closed smoothly. An object is to provide a switch and a method for opening and closing a valve.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problem, the valve switch according to the present invention is configured such that the opposite end 8 of the cylindrical tip portion 2 inserted into the valve opening / closing lever 15 and rotating around the valve opening / closing lever 15 is the rotation At the same time, the first curved portion 4 is connected to the cylindrical distal end portion 2 so as to make a circular motion, and is bent into a substantially square shape.
In the valve switch 1 configured as described above, even when the space between the tip 15a and the inner wall 13a of the underground valve chamber 13 is narrow in the axial direction of the valve opening / closing lever 15 in the inclined state. The valve switch 1 having an extended length is inserted into the inclined valve opening / closing lever 15 or the valve opening / closing lever 15 by scraping the substantially curved first curved portion 4 into the space. Can be extracted from.
In addition, since the distal end 8 can be circularly moved with the cylindrical tip 2 inserted into the valve opening / closing lever 15, the valve switch 1 can freely change its direction around the valve opening / closing lever 15. It becomes.
[0005]
In addition, the valve switch according to the present invention includes the first bending portion 4. Starting point of bending Neighborhood To the appropriate position on the edge 2a side of the tip 2 If the contact portion 3 with which the tip 15a of the valve opening / closing lever 15 abuts is provided, the contact portion 3 becomes a stopper when inserted into the valve opening / closing lever 15, and the tip 15a has a substantially square shape. In order to prevent insertion deeper than the curved portion 4, the tip portion 2 is kept rotatable about the valve opening / closing lever 15 as a central axis so that the direction change of the valve switch 1 itself can be performed without resistance, The valve opening / closing lever 15 can be easily removed.
[0006]
Further, if the valve switch according to the present invention is formed so as to be gradually opened toward the tip, the valve opening / closing lever 15 can be easily inserted into and removed from the valve opening / closing lever 15. It is preferable.
Furthermore, the valve switch according to the present invention is provided with a second curved portion 6 having a substantially reverse-curved shape at the other end of the intermediate portion 5 connected to the first curved portion 4. In its curving direction Parallel to tip 2 Or a non-parallel straight line A configuration in which the gripping portion 7 is connected can be employed.
In the valve switch 1 having the above-described configuration, the valve switch 1 itself has its tip portion 2 at the time of a series of lever operations in which the valve opening / closing lever 15 in the inclined state is raised and tilted in the reverse inclined state. Since the rotation radius of the gripper 7 when rotating and changing the direction can be reduced, the flow line is shortened, and the opening / closing operation can be performed quickly in a small space.
Further, when inserted into the valve opening / closing lever 15 in an upright state, the gripping portion 7 is bent from the intermediate portion 5 and exhibits an upward shape, so that the end of the valve switch 1 becomes easier to grip and force is increased. The valve opening / closing lever 15 can be smoothly rotated with good use.
[0007]
Further, the valve switch according to the present invention can be used to open and close the embedded device 14 in the underground valve chamber 13 as long as the bar piece 9 or the cap body 10 is provided at the opposite end 8 of the tip 2. In addition to operating the lever 15, the cover 11 that closes the upper surface opening of the underground valve chamber 13 is opened by the bar piece 9, or the valve opening / closing screw 16 of the embedded device 14 is opened and closed by the cap 10. Can do. In other words, different tools are provided at both ends of one valve switch 1 to enable dual use.
[0008]
Furthermore, in the valve opening / closing method according to the present invention, the distal end portion 2 of the rod-shaped valve switch 1 which is formed into a substantially hemispherical shape by connecting the first curved portion 4 to the tubular distal end portion 2 is inclined. When the valve opening / closing lever 15 is inserted into the valve opening / closing lever 15 and the valve opening / closing lever 15 is rotated together with the valve opening / closing direction in the valve opening / closing direction to substantially stand up, the end 8 of the valve opening / closing 1 is connected to the cylindrical tip 2. After a semi-rotating circular movement as a center, the valve opening / closing lever 15 together with the valve switch 1 is further rotated in the same direction so as to be in a reverse inclined state.
In the valve opening / closing method having such a configuration, the valve switch 1 can be rotated and rotated in a series while the valve switch 1 is inserted into the valve opening / closing lever 15. The valve opening / closing lever 15 in an inclined state can be stood up, and the valve can be opened and closed completely and quickly in a reverse inclined state.
[0009]
Further, the valve opening and closing method according to the present invention includes the first end portion 2 of the rod-shaped valve switch 1 that is formed in a substantially heft shape by connecting the first bent portion 4 to the cylindrical end portion 2. Located in underground valve chamber 13 Insert it into the substantially open valve opening / closing lever 15; The opposing concave and convex curved surfaces of the first curved portion 4 are directed in the valve opening / closing direction of the valve opening / closing lever 15, and the opposite end 8 of the distal end portion 2 is projected from the upper surface opening of the valve chamber 13, or the valve It is located near the upper surface opening in the chamber 13, The valve opening / closing lever 15 together with the valve switch 1 is connected to the first bending portion 4. Convex curved surface It is turned to the inclined state.
In the valve opening / closing method configured as described above, the first bending portion 4 is rotated until the first bending portion 4 comes close to the inner wall 13a of the underground valve chamber 13 with the valve switch 1 inserted into the valve opening / closing lever 15. Even in a narrow space in the underground valve chamber 13, the valve opening / closing lever 15 in the standing state can be reliably tilted to the inclined state, and the valve can be fully opened or fully closed.
[0010]
In addition, the valve opening and closing method according to the present invention includes the first bending portion 4. Starting point of bending Neighborhood To the appropriate position on the edge 2a side of the tip 2 If the contact part 3 is provided outside the valve opening / closing lever 15 and the insertion depth of the valve switch 1 is determined and operated, when the valve opening / closing lever 15 is inserted into the valve opening / closing lever 15, the valve opening / closing is performed. Of the first bending portion 4 of the vessel 1 Starting point of bending Neighborhood To the appropriate position on the edge 2a side of the tip 2 The contact portion 3a at the contact with the tip 15a of the valve opening / closing lever 15 or the contact portion 3b at the outside of the valve opening / closing lever 15 contacts with the edge 2a of the tubular tip portion 2 of the valve switch 1. In addition, the tip 15a of the valve opening / closing lever 15 is not inserted deeply into the first bending portion 4 having a substantially square shape, and the valve switch 1 can be rotated and circularly moved without any trouble. The valve opening / closing lever 15 can be easily pulled out, and a series of operations can be performed quickly and without waste.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1A and 1D show a valve switch 1 according to an example of this embodiment.
The valve switch 1 is composed of a pipe body having a circular cross section, and a first curved portion 4 having a substantially square shape is connected to a cylindrical tip portion 2, and is connected to the first curved portion 4 to reach the end 8 thereof. The portion is formed into a straight and long grip portion 7, and the distal end portion 2 is formed so as to be gradually opened toward the end edge 2 a (non-curved side), and the bending start point of the first curved portion 4 In the vicinity, a round rivet is provided in the radial direction of the pipe to form a contact portion 3a.
[0012]
1 (b) and 1 (d) show a valve switch 1 according to another embodiment of the present invention, and the valve switch 1 also has a substantially curved first curved portion 4 connected to a distal end portion 2 of a pipe body. And a rear portion connected to the first curved portion 4 is formed into a straight and long intermediate portion 5, and a second curved portion 6 having a substantially inverted letter shape is provided on the other end side, and the second curved portion 6 It consists of a rod-shaped body with a circular cross section that connects to the end 8 and forms a straight gripping portion 7.
That is, the first bending portion 4 and the second bending portion 6 are formed by bending both ends of the linear intermediate portion 5 in opposite directions. The bending angles α1 and α2 of the first bending portion 4 and the second bending portion 6 are different from each other, and the gripping portion 7 is not parallel to the distal end portion 2 in the bending direction of the second bending portion 6. ing.
[0013]
1 (c) and (d) show a modification of the valve switch according to the other embodiment, and the valve switch 1 is a first curve in the valve switch shown in FIG. 1 (b). The bending angle of the part 4 and the second bending part 6 is the same narrow angle. (Bending angle α1 = α3, α2 = α3) The intermediate portion 5 is shortened, and the gripping portion 7 that is parallel to the tip portion 2 is extended and formed in a straight line (in FIG. 1 (C), the middle portion is omitted, and the whole is clearly shown in FIG. 7). And reaches the end 8 thereof.
Thus, in the case of FIGS. 1 (b) and 1 (c), the tip 2 is formed in a gradually opened shape toward the edge 2a (non-curved side) as in FIG. 1 (a). Further, a contact portion 3 a is provided in the vicinity of the bending start point of the first bending portion 4.
[0014]
The cross-sectional shape of the valve switch 1 in each of the above-described embodiments is an example, and the cross-sectional shape can be appropriately changed within a range that fulfills a predetermined purpose. For example, the cylindrical tip portion 2 has a tip shape as described later. Depending on the cross-sectional shape of the valve opening / closing lever 15 into which the portion 2 is inserted, any shape that can rotate about the valve opening / closing lever 15 as a central axis is acceptable, and the configuration in which the contact portion 3a is provided is not an essential condition. As shown in FIGS. 2 (a) to 2 (d), the cylindrical body itself is recessed toward the lumen (FIG. 2 (a)), and a plate-like body is fixed to the lumen of the cylindrical body. (Both (B) and (C) in the figure), and the tip portion 2 is formed by a bag body that does not gradually open on the edge 2a side, and the bottomed portion serves as a contact portion 3a. 15 is inserted into the valve opening / closing lever 15 in contact with the tip 15a of the valve 15 As long as it is determined but no limitation on the specific embodiment, the higher ones degree of contact between the tip 15a is small, the valve switch 1 itself rotates, resistance is small preferable in the circular motion.
Further, the contact portion 3 a is not limited to the vicinity of the bending start point of the first bending portion 4. ,Previous Provided at an appropriate position on the edge 2a side of the tip 2 from the vicinity, the valve opening / closing lever 15 can be inserted into the tip 2 and the tip 15a is brought into contact therewith. . Furthermore, there is no particular problem even if the portion connected to the distal end portion 2 is a rod having a solid and arbitrary cross-sectional shape as shown in FIG.
Furthermore, the valve switch 1 may be made of any material according to desired performance, such as metal or resin.
[0015]
Next, a method for opening and closing the valve using the valve switch 1 will be described.
First, when the valve switch 1 shown in FIG. 1 (a) is used, as shown in FIGS. 3 (a) to (c), the inside of the underground valve chamber 13 formed by stacking the block bodies 12 is used. The valve switch 1 is inserted into the valve opening / closing lever l5 (rod having a circular cross section) attached to the fire hydrant as the buried device 14 located at the lower level by holding the holding portion 7 from the upper surface opening of the underground valve chamber 13. In addition, in the axial direction of the valve opening / closing lever 15 in the left-tilt state (the valve is fully open), a substantially curved first-shaped curved portion is formed into a space between the tip 15a and the inner wall 13a of the underground valve chamber 13. When the cylindrical tip 2 is inserted into the valve opening / closing lever 15 by scrambling 4, the contact portion 3 a of the valve switch 1 abuts against the tip 15 a of the valve opening / closing lever 15 to stop the insertion (▲ 1 ▼ state).
Subsequently, as shown in FIG. 4D, the gripping portion 7 protruding from the upper surface of the underground valve chamber 13 is gripped so that the valve is fully closed (the valve opening / closing lever 15 is tilted to the right). When the valve opening / closing lever 15 is pivoted approximately half to the right together with the valve switch 1 and the valve opening / closing lever 15 stands upright and becomes vertical (state (2)), the end 8 of the valve switch 1 is A circular movement (approximately 180 degrees) about the tip 2 is performed as a center (state (3)).
Further, by holding this state and rotating the valve switch 1 to the right, the valve opening / closing lever 15 is in a right inclined state (state of (4)), and the valve is completely closed.
Thus, by pulling out the valve switch 1 from the valve opening / closing lever 15 by reversing the insertion procedure shown in FIGS. 3 (a) to 3 (c), a series of valve operations is completed.
[0016]
Further, if the valve switch 1 is rotated from the right to the left by the reverse procedure to the above operation, the valve opening / closing lever 15 is brought into the left inclined state and the valve can be completely opened.
Here, when the valve switch 1 is inserted and removed, even if the space in the underground valve chamber 13 is narrow, the tip portion 2 below the first curved portion 4 that is substantially hemispherical is arced in that space. The distal end 2 that gradually opens at the edge 2a enhances the insertion property with the valve opening / closing lever 15, and the inserted valve switch 1 is connected to the distal end 15a of the valve opening / closing lever 15. Since the contact portion 3a that comes into contact with is not inserted more than necessary and does not bite, it is easy to remove.
Further, the abutting state makes the tip 2 rotatable about the valve opening / closing lever 15 as a central axis.
[0017]
In the case shown in FIG. 4, the underground valve chamber 13 is high, and the valve opening / closing lever 15 of the embedded device 14 installed at a deep position is operated. In this case as well, the same operation as in FIG. 3 is performed. A series of operations may be performed. As shown in FIG. 4, when the valve opening / closing lever 15, which is substantially half-turned rightward together with the valve switch 1, is substantially raised (state (2)), 1 end 8 is moved approximately half a rotation (approximately 180 degrees) about its tip 2 and at the same time the valve opening / closing lever 15 is slightly tilted to the right (in the state of (3)), and the valve switch 1 is further moved. By turning it to the right, the valve is completely closed (state (4)).
Here, since the embedded device 14 is deep from the ground surface and the inner width of the underground valve chamber 13 that is the rotation direction of the valve opening / closing lever 15 is narrow, the valve opening / closing lever 15 is used in a conventional manner (manual operation). Or, it is difficult to operate with a hammer, bar, etc.), but according to the valve switch 1, As shown in FIG. 4, the end 8 does not protrude from the upper surface of the underground valve chamber 13 and is positioned near the upper surface opening. By grasping and operating the grip portion 7 in the underground valve chamber 13, the valve opening / closing lever 15 can be opened and closed easily and reliably.
[0018]
When the valve switch 1 shown in FIGS. 1B and 1C is used, as shown in FIGS. 5 to 7, a series of operations similar to those shown in FIGS. (States (1) to (4)) may be performed.
Thus, each of the valve switches 1 is provided with the second bending portion 6, and the gripping portion 7 is connected to the end 8, so that the valve opening / closing lever 15 is substantially raised (respectively ▲ 2), the valve switch 1 itself can move about a half turn (about 180 degrees) around the tip 2 to reduce the turning radius at the end 8 when changing direction by circular movement. , There is an advantage that the flow line becomes short and the operation can be performed in a small space.
In particular, in the valve switch 1 shown in FIGS. 1C and 7, the intermediate portion 5 is formed short, and the bending angles (α3) of the first bending portion 4 and the second bending portion 6 are respectively set. Since the same narrow angle is formed, the gripping portion 7 also stands substantially vertically at the time of the change of direction, and the rotation radius thereof becomes smaller, and the gripping portion 7 is elongated and formed. If gripped, there is an advantage that the valve opening / closing lever 15 having a rigid operation can be rotated with a slight force.
[0019]
In each of the above embodiments, the valve opening / closing lever 15 that is in the inclined state (the valve is fully opened or fully closed) from the beginning is temporarily raised, and then the valve is opened and closed in a reverse inclined state. However, even in the valve opening / closing lever 15 that is standing or substantially standing (the valve is half-opened) from the beginning, the valve switch 1 can be used to make it into an inclined state.
For example, in FIG. 3 (d) where the valve switch 1 shown in FIG. 1 (a) is used, if the valve opening / closing lever 15 is standing upright from the beginning, When the valve switch 1 is inserted from the upper surface opening, the cylindrical tip 2 is made substantially vertical and inserted into the valve opening / closing lever 15 from above, the contact portion 3a of the valve opening / closing lever 15 is The insertion is stopped by contacting the tip 15a. In addition, the concave and convex curved surfaces facing the first bending portion 4 are directed toward the valve opening / closing direction of the valve opening / closing lever 15. (State of (3)) Subsequently, the gripping portion 7 is gripped and the valve opening / closing lever 15 together with the valve switch 1 is moved to the first bending portion 4. Convex curved surface By turning to the right, that is, in the right direction in the figure, the valve is completely closed by being tilted to the right (4 state). Also in FIGS. 4 to 7, when the valve opening / closing lever 15 is substantially upright or standing from the beginning, the same operation as described above (3) to (4) may be performed.
Thus, in this embodiment, the distal end portion 2 connected to the first bending portion 4 of the valve switch 1 is inserted into the standing or substantially standing valve opening / closing lever 15 so that the valve switch 1 is moved to the first bending portion. Four Convex curved surface 3, and the first curved portion 4 is close to the inner wall 13 a of the underground valve chamber 13 as shown in the states (3) to (4) in FIG. Thus, the valve switch 1 can be rotated until the valve opening / closing lever 15 is widened as much as possible, and the valve opening / closing lever 15 is promptly inclined.
[0020]
The fire hydrant as the embedded device 14 has a structure that opens and closes a valve that is built in by turning the valve opening / closing lever 15 that is pivotally supported to the outside to discharge and stop the water. 15 is set to a rotation range of approximately 90 degrees from the fully open state (when tilted to the left) to the fully closed state (when tilted to the right). However, the embedded device 14 is not limited to the above fire hydrant, As long as it has a valve opening / closing lever 15 that pivots around the center, any model may be used, and the range of rotation is not limited to the above-mentioned one. Alternatively, in addition to the fully closed state or the fully closed state or the fully open state in the inclined state, it may be set appropriately.
Further, in each of the above-described embodiments, the first curved portion 4, the second curved portion 6, the intermediate portion 5, and the gripping portion 7 of the valve switch 1, and the first curved portion 4 and the second curved portion, respectively. The bending angles α to α3 of the bending portion 6 and the formation positions thereof are not limited to those of the above-described embodiment, and the height of the underground valve chamber 13 that protects the embedded device 14 and the dimensions of the block body 12 that forms the underground chamber 14. It can be appropriately changed according to the shape and the like.
[0021]
Further, in each of the above embodiments, the insertion depth of the valve switch 1 inserted into the valve opening / closing lever 15 is limited by the contact portion 3 a provided in the valve switch 1, but this insertion depth is limited to the valve opening / closing lever 15. It is also possible to restrict the end edge 2a of the tip end portion 2 of the valve switch 1 by contacting the contact portion 3b provided on the outer side of the valve switch 1, for example, as shown in FIGS. 8 (a) to 8 (d). The diameter of the tip 15a of the lever 15 is reduced and a stepped portion is provided on the outer peripheral surface (the same figure (A)), and the convex portion is provided on the outer peripheral surface separated from the tip 15a continuously (or divided) ( (B)), and a rod-like body penetrating in the radial direction of the valve opening / closing lever 15 at a position spaced from the tip 15a, and both ends projecting outward (FIG. (C) and (D) ) And the like.
[0022]
Next, another embodiment of the valve switch 1 will be described. First, the valve switch 1 shown in FIGS. 9 (a) and 9 (b) is an end 8 on the opposite side of the cylindrical tip portion 2, that is, a substantially square shape. A cap body 10 having a square cylindrical shape and a bag shape is integrally provided at the end 8 of the gripping portion 7 connected to the first bending portion 4.
Thus, as shown in FIG. 9 (e), the valve switch 1 rotates the valve opening / closing screw 16 attached to the gate valve or the like in addition to the fire hydrant as the above-mentioned buried device 14 to rotate the valve. In order to open and close, the valve opening / closing screw 16 that can be suspended from the embedded device 14 is inserted into the valve switch 1 by holding the holding portion 7 from the upper surface opening of the underground valve chamber 13, and the cap body 10 at the end 8 is attached. The tip portion 2 is rotated and used while being inserted.
Further, according to the valve switch 1 in which the distal end portion 2 and the gripping portion 7 are made substantially parallel as shown by the broken line in FIG. 16 can be applied.
In addition, the shape of the cap body 10 having the above-mentioned rectangular tube shape is arbitrary, and any shape can be used as long as the valve opening / closing screw 16 can be rotated in accordance with the shape of the valve opening / closing screw 16 into which the cap body 10 is inserted. .
[0023]
Further, a bar piece 9 is integrally connected to the end 8 of the valve switch 1 shown in FIGS. 9 (C) and 9 (D) and FIGS. 10 (A) and 10 (B). More specifically, the burl piece 9 in FIGS. 9C and 9D has a tongue-like shape at the end 8 of the gripping portion 7, and the burl piece 9 in FIGS. The distal end 8 of the gripping portion 7 connected to the second bending portion 6 is formed in a tongue-like shape, the tip thereof is refracted upward, the bulging portion 17 is provided on the upper surface, and the support seat is provided on the lower surface. 18 and the reinforcing material 19 is provided on the narrow angle side of the second bending portion 6.
Thus, as shown in FIGS. 10 (c) to 10 (f), the valve switch 1 has a burl hole 11a provided in the lid body 11 for closing the upper surface opening of the underground valve chamber 13 described above. The bar piece 9 is inserted, and the lid 11 is opened from the underground valve chamber 13 by lever action.
Here, in the case of the valve switch 1 shown in FIGS. 10 (a) and 10 (b), the bar piece 9 is formed in the recessed portion 11b additionally provided in the burl hole 11a as shown in FIGS. 10 (e) and (f). The bulging portion 17 on the upper surface of the bulge 17 is fitted to position the bar piece 9 inserted into the burl hole 11a, and the support seat 18 that contacts the upper surface of the underground valve chamber 13 serves as a fulcrum. Since the operation is good and the reinforcing member 19 in the second bending portion 6 has an operation of preventing the valve switch 1 from being bent and deformed, the lid 11 can be opened more easily.
That is, according to each valve switch 1 according to the other embodiment, in addition to rotating the valve opening / closing lever 15 of the embedded device 14 by the distal end portion 2, the valve opening / closing screw 16 is opened / closed by the cap body 10. Alternatively, the opening operation of the lid 11 by the bar piece 9 can be performed together.
[0024]
【The invention's effect】
The valve switch according to the present invention includes a cylindrical tip portion that is inserted into the valve opening / closing lever and rotates opposite to the cylindrical tip portion that rotates about the valve opening / closing lever as a central axis so as to make a circular motion with the rotation. Since the first curved portion is connected to be bent in a substantially U-shape, it is formed between the tip of the valve opening / closing lever and the inner wall of the underground valve chamber in the axial direction of the valve opening / closing lever in an inclined state. Even when the space to be operated is narrow, the valve switch formed in a long length is in an inclined state by scraping the first curved portion formed in the substantially square shape into the space. It can be inserted into the valve opening / closing lever or removed from the valve opening / closing lever reliably.
[0025]
Moreover, the valve switch according to the present invention includes a first bending portion. Starting point of bending Neighborhood Appropriate position on the edge side of the tip from Since the contact portion with which the tip of the valve opening / closing lever abuts is provided, the first bending portion in which the contact portion becomes a stopper when inserted into the valve opening / closing lever, and the tip of the valve opening / closing lever forms a substantially square shape. It is prevented from being inserted deeply beyond. Accordingly, the tip of the valve switch is rotatably held around the valve opening / closing lever as a central axis, and the direction change of the valve switch itself can be performed without resistance, and can be easily removed from the valve opening / closing lever.
[0026]
In addition, since the valve switch according to the present invention is formed so as to gradually open toward the tip (non-curved side), the valve switch according to the present invention can be inserted into the valve opening / closing lever or removed from the valve opening / closing lever. It can be done more easily.
Furthermore, the valve switch according to the present invention is provided with a second curved portion having a substantially reverse-helix shape at the other end of the intermediate portion connected to the first curved portion, and the second curved portion is provided with the second curved portion. In its curving direction Parallel to the tip Or a non-parallel straight line Since the gripping part is connected, when the valve opening / closing lever is operated, the valve switch itself rotates around its tip, and the turning radius of the gripping part when changing direction is small, and the opening / closing operation is small space. Can be done quickly.
In addition, when inserted into a standing valve opening / closing lever, the gripping part is bent from the middle part to show an upward shape, and the end of the valve switch becomes easier to grip. Can be rotated smoothly.
[0027]
In addition, since the valve switch according to the present invention is provided with a bar piece or a cap body at the opposite end of the tip portion, in addition to operating the valve opening / closing lever of the buried device in the underground valve chamber, The lid fitted to the upper surface of the underground valve chamber can be opened by the bar piece, or the valve opening / closing screw of the embedded device can be opened / closed by the cap body. That is, by using a single valve switch, the number of tools can be reduced, and the operation and work can be simplified.
[0028]
Furthermore, the valve opening / closing method according to the present invention is a valve opening / closing method in which the distal end portion of the rod-shaped valve switch that is formed in a substantially square shape by connecting the first curved portion to the tubular distal end portion is inclined. After inserting the lever into the lever and rotating the valve opening / closing lever together with the valve switch in the valve opening / closing direction to raise the valve, the end of the valve switch is moved approximately half a circle around the cylindrical tip. In order to further rotate the valve opening / closing lever in the same direction together with the valve opening / closing, the valve opening / closing lever is inserted into the valve opening / closing lever in the underground valve chamber. A series of rotation and rotation operations can be performed, and accordingly, the valve opening / closing operation of raising the valve opening / closing lever in the inclined state and subsequently inclining to the reverse inclined state can be performed reliably and quickly.
[0029]
Also, the valve opening and closing method according to the present invention includes a rod-shaped valve switch that is formed into a substantially hemispherical shape by connecting a first curved portion to a cylindrical tip portion. Located in underground valve chamber Insert it into the valve opening / closing lever in the standing or almost standing state, The opposing concave and convex curved surface side of the first curved portion is directed in the valve opening / closing direction of the valve opening / closing lever, and the opposite end of the tip portion is projected from the upper surface opening of the valve chamber or in the vicinity of the upper surface opening in the valve chamber Located in A valve opening / closing lever together with the valve switch is connected to the first bending portion. Convex curved surface Since the valve switch is inserted into the valve opening / closing lever, the first bending portion can be rotated until it reaches the vicinity of the inner wall of the underground valve chamber. Even in a narrow space in the middle valve chamber, the valve opening / closing lever in the standing state can be reliably tilted to the inclined state, so that the valve can be fully opened or fully closed.
[0030]
Further, the valve opening and closing method according to the present invention includes the first bending portion. Starting point of bending Neighborhood Appropriate position on the edge side of the tip from And / or a contact portion on the outside of the valve opening / closing lever, and when the valve opening / closing lever is inserted into the valve opening / closing lever to determine and operate the insertion depth of the valve opening / closing lever, Starting point of bending Neighborhood Appropriate position on the edge side of the tip from The contact part on the valve contacts the tip of the valve opening / closing lever, or the contact part on the outside of the valve opening / closing lever contacts the edge of the cylindrical tip of the valve switch, It is prevented from being inserted by being inserted deeper than the first curved portion having a substantially square shape.
Therefore, the valve switch can be rotated and circularly moved without any trouble, and can be easily removed from the valve opening / closing lever, so that a series of operations can be operated quickly without waste.
[Brief description of the drawings]
FIGS. 1A to 1C are front views of a valve switch according to an embodiment and another embodiment of the present invention, and FIG. 1D is an end view taken along line AA in FIGS.
2 (a), (b) and (d) are cross-sectional views of a main part showing a valve switch according to another embodiment of the present invention, and (c) is an end view taken along line BB in (b).
FIGS. 3A to 3D are cross-sectional views showing a valve opening / closing method using a valve switch according to an embodiment of the present invention.
FIG. 4 is a sectional view showing a valve opening / closing method using the valve switch according to the embodiment of the present invention.
FIG. 5 is a cross-sectional view showing a valve opening / closing method using a valve switch according to another embodiment of the present invention.
FIG. 6 is a cross-sectional view showing a valve opening / closing method using a valve switch according to another embodiment of the present invention.
FIG. 7 is a sectional view showing a valve opening / closing method using a valve switch according to another embodiment of the present invention.
FIGS. 8A and 8B show a state in which a valve switch and a valve opening / closing lever according to another embodiment of the present invention are inserted, wherein FIGS. 8A to 8C are cross-sectional views of main parts, and FIG. 8D is a valve switch in FIG. CC arrow figure which shows the valve opening / closing lever of the state which has not inserted.
9 (a) and (c) are partially omitted front views of a valve switch according to another embodiment of the present invention, (b) and (d) are right side views, and (e) is the same usage method. FIG.
10 (a) is a partially omitted front view of a valve switch according to another embodiment of the present invention, FIG. 10 (b) is a plan view thereof, and FIG. 10 (c) and FIG. The figure, (D) and (F) are the same principal part top views.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Valve switch, 2 ... Cylindrical front-end | tip part, 2a ... End edge 3, 3a, 3b ... Contact part, 4 ... 1st bending part, 5 ... Middle part, 6 ... 2nd bending part, 7 ... Gripping 8 ... terminal, 9 ... bar piece, 10 ... cap body, 11a ... burl hole, 14 ... embedded device, 15 ... valve opening / closing lever, 15a ... end, 16 ... valve opening / closing screw

Claims

The opposite end (8) of the cylindrical tip (2) that is inserted into the valve opening / closing lever (15) and rotates about the valve opening / closing lever (15) as a central axis is cylindrical so as to make a circular motion with the rotation. A valve switch characterized in that the first curved portion (4) is connected to the distal end portion (2) of the lip and is bent into a substantially square shape.

A contact portion (3) with which the tip (15a) of the valve opening / closing lever (15) abuts at an appropriate position on the edge (2a) side of the tip (2) from the vicinity of the bending start point of the first bending portion (4). The valve switch according to claim 1 provided.

The valve switch according to claim 1 or 2, wherein the tip (2) is formed in a gradually opened shape toward the tip.

A second curved portion (6) having a substantially reverse-helix shape is provided at the other end of the intermediate portion (5) connected to the first curved portion (4), and the distal end portion (2 in the curved direction ) is provided on the second curved portion (6). The valve switch according to any one of claims 1 to 3, wherein a linear gripping part (7) that is parallel or non-parallel to said part is connected.

The valve switch according to any one of claims 1 to 4, wherein a burl piece (9) or a cap body (10) is provided at the opposite end (8) of the tip portion (2).

A valve opening / closing lever in which the distal end (2) of the rod-shaped valve switch (1) formed by connecting the first curved portion (4) to the tubular distal end (2) and being bent into a substantially square shape is inclined. (15) is inserted into the valve switch (1) and the valve opening / closing lever (15) is rotated in the valve opening / closing direction to substantially stand up, and the end (8) of the valve switch (1) is cylindrical. The valve opening / closing lever (15) together with the valve switch (1) is further rotated in the same direction to make a reverse inclined state after the tip part (2) of the valve is moved in a semi-rotational circle. How to open and close the valve.

The tip portion (2) of the rod-shaped valve switch (1) formed by connecting the first bent portion (4) to the cylindrical tip portion (2) and bending it into a substantially square shape is used as the underground valve chamber ( 13) is inserted into the substantially upright valve opening / closing lever (15), and the concave and convex curved surface sides of the first bending portion (4) are directed in the valve opening / closing direction of the valve opening / closing lever (15), The opposite end (8) of the tip (2) protrudes from the upper surface opening of the valve chamber (13) or is positioned in the vicinity of the upper surface opening in the valve chamber (13), and the valve switch (1) together with the valve A valve opening / closing method, wherein the opening / closing lever (15) is rotated to the convex curved surface side of the first bending portion (4) to be in an inclined state.

A contact portion (3) is provided at an appropriate position on the edge (2a) side of the tip end portion (2) from the vicinity of the bending start point of the first bending portion (4) and / or outside the valve opening / closing lever (15), and a valve switch ( The valve opening / closing method according to claim 6 or 7, wherein the operation is performed by determining the insertion depth of 1).