JP3600292B2

JP3600292B2 - Pipe connection device

Info

Publication number: JP3600292B2
Application number: JP02205495A
Authority: JP
Inventors: 良三猪浦
Original assignee: Maezawa Kasei Kogyo KK
Current assignee: Maezawa Kasei Kogyo KK
Priority date: 1995-02-09
Filing date: 1995-02-09
Publication date: 2004-12-15
Anticipated expiration: 2019-12-15
Also published as: JPH08218476A

Description

【０００１】
【産業上の利用分野】
本発明は、排水管路に接続される汚水桝、分岐管継手などの被管接続体の管接続口装置に係り、特に、既設排水管路の途中に設置に適するものに関する。
【０００２】
【従来の技術】
従来、既設の排水管路の途中に、例えば汚水桝を接続する場合は、排水管路の内周面に凹凸部が形成されないように接続しなくてはならず、汚水桝の両端に接続される排水管をその内端部がそれぞれ汚水桝の流入側および流出側の受口の奥端のストッパー段部まで挿入することにより、汚水桝の排水管接続口の内周面と排水管の内周面とが面一となるようにしている。そして，図８および図９に示すように、既設の排水管路に、被管接続体、例えば汚水桝本体１を設置するときに、少なくとも配管材料として伸縮継手２とソケット３を必要とし、既設管路の汚水桝本体１を設置しようとする箇所を前記汚水桝本体１と二つの必要な配管材料の長さの和、すなわち、設置される汚水桝本体１の全長ｌ1 と、収縮した状態の伸縮継手２の最小長さｌ2 と、ソケット３の略半分長さｌ3 との和の長さ分を切断し、まず、汚水桝本体１の下流側となる一方の管接続口の受口部４に既設の排水管９の一方の切断端部５を嵌挿接着し、次に、外管７とこの外管７に嵌着した小径の内管６とにより構成されている伸縮継手２の外管７の接続口を前記汚水桝本体１の上流側の他方の受口部８に嵌挿接着する。なお、この伸縮継手２は偏芯して内管６と外管７の底面が面一に形成され、この外管７と小径の内管６との間に環状のゴムリングを嵌着している。そして、既設の排水管９の他方の切断端部5aにはソケット３を接着し、この状態で、前記伸縮継手２の内管６を引出してソケット３に嵌着して接着する接続工法が採られている。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記従来の施工方法では、既設管路の切断長さが長くなり、既設管路に汚水桝本体を設置する空間が狭いとき、および、既設管路に設置した汚水桝と汚水桝との間にスペースが余りない場所に対して、施工が煩雑で作業がやりずらく、汚水桝などの被接続体が接続できない場合もあるという問題があった。
【０００４】
また、配管材料としての伸縮継手およびソケットは不可欠であり、コストアップとなるという問題があった。
【０００５】
本発明は、このような問題点に鑑みなされたもので、施工の場所が狭くても汚水桝などの被接続管体の接続が容易に施工ができ、また、従来の施工法では必要とした伸縮継手、ソケットのような余分の配管材料も必要なく、また、新設の排水管路にも使用でき、特に、既設管路の途中に汚水桝、分岐継手などの被接続管体を容易に接続できる管接続口装置を提供するものである。
【０００６】
【課題を解決するための手段】
請求項１記載の発明の管接続口装置は、接続管を接続する被接続体の被接続管部は、先端側に上半部を切り欠いた半割り受口部を形成し、この半割り受口部の下半部の先端側を拡径して内面全周に接続管が当接するストッパー段部を形成し、この半割り受口部の上半部に軸心方向と直交する半円弧状の切断縁に沿って前記ストッパー段部の端面とを略同一面とした円弧状係合突部を突設し、この円弧状係合突部の外端側の端面に開口した円弧状係合溝部を形成するとともにこの円弧状係合突部に連続してこの半割り受口部の下半部の軸線方向に延びる両側切断縁に沿って直線状係合突部を突設し、前記被接続体の半割り受口部の切り欠いた上半部を覆う覆い体は、前記半割り受口部の切り欠いた上半部の形状と同一の円弧面形状を成し、前記被接続体の半割り受口部の切り欠き部に前記覆い体を嵌着してこの覆い体の内端側に延出した半円弧状の嵌合端縁を前記円弧状係合溝部に嵌挿するとともに両側下端縁を前記直線状係合突部の内面側に係合し、前記被接続体の被接続管部に形成した前記両側直線状係合突部の外端側に内面側および外端側に開口した係合凹部を形成し、この係合凹部に係合される係合突起を前記覆い体の両側外周面の外端側にそれぞれ突設したものである。
【０００７】
請求項２記載の発明の管接続口装置は、請求項１記載の管接続受口装置において、被接続体の被接続管部に形成した円弧状係合溝部の内周上面部とこの円弧状係合溝部に嵌合される覆い体の嵌合端縁の外周面との少なくともいずれか一方を係合溝部の内端側から外端側に向って拡径する方向に傾斜したテーパー面としたものである。
【０００８】
請求項３記載の発明の管接続口装置は、請求項１または２記載の管接続口装置において、係合凹部は外端側開口部を拡げたものである。
【０００９】
請求項４記載の発明の管接続口装置は、請求項１ないし３のいずれかに記載の管接続口装置において、覆い体の内端側外周面には被接続体の被接続管部に形成した上半部の円弧状係合突部に当接する突出部を形成するとともに外端部外周面に被叩き部を突設したものである。
【００１０】
請求項５記載の発明の管接続口装置は、請求項１ないし４のいずれかに記載の管接続装置において、覆い体の内端側外周面に形成した突出部に被接続体の被接続管部に形成した円弧状係合突部に係合してこの覆い体の抜け外れを防止する係止片を設けたものである。
【００１１】
【作用】
請求項１記載の発明の管接続口装置は、被接続体の被接続管部の先端側に形成した上半部を切り欠いた半割り受口部に、開口している上方から排水管などの接続管を嵌入接着して、この接続管の一端部を半割り受口部の下半部の先端側を拡径して内面全周に形成したストッパー段部に当接する。次いで、被接続体の半割り受口部の切り欠いた上半部に覆い体を嵌着して接続管の上半部を覆い、この半割り受口部に形成した上半部の半円弧縁状の切断縁に沿って外周側に端面に開口されている円弧状係合溝部に覆い体の一端部に延出した半円弧状の嵌合端縁を嵌挿接着するとともに、この覆い体の両側端縁を半割り受口部の下半部の軸線方向に延びる両側切断縁に当接接着し、覆い体の両側端縁の外周面を半割り受口部の下半部の軸線方向に延びる両側切断縁に沿って突設した直線状係合突部に係合し、かつ、覆い体の内面を接続管に外周面に接着する。
【００１２】
そして、被接続体の被接続管部の上半部を切り欠いた半割り受口部に嵌着した接続管の端面は被接続体の被接続管部に形成したストッパー段部の端面と上半部の軸心方向と直交する半円弧縁状の切断縁の端面とに当接され、ストッパー段部の端面および上半部の半円弧縁状の切断縁の端面と接続管の端面との間に窪み凹部が形成されず、接続管から被接続体の被接続管部に流入する流体または被接続体の被接続管部から接続管に流れる流体は引っ掛かることなく流れる。
【００１３】
また、被接続体の被接続管部の上半部を切り欠いた半割り受口部に開口した上方から接続管を嵌着でき、既設の排水管などの接続管に被接続体を接続するときの接続管の切断長さを短くでき、狭い場所でも施工作業が容易にできる。
【００１４】
なお、既設排水管路の途中に汚水桝などの被接続体を設置するときは、この既設管を被接続体の半割り受口部の上半部の半円弧縁状の切断縁端面間の長さに合わせて切断することにより、既設排水管路に被接続体を接続できる。
【００１５】
さらに、被接続体の被接続管部に形成した両側直線状係合突部の係合凹部と覆い体の係合突起との係合で、円弧状係合溝部と嵌合端縁との係合部から離間した部分でも、半割り受口部の軸方向の切断縁と覆い体の両側端縁との接合が保持される。
【００１６】
請求項２記載の発明の管接続口装置は、被接続体の被接続管部の円弧状係合溝部に嵌挿される覆い体の嵌合端縁は、係合溝部の内端側から外端側に向って拡径する方向に傾斜したテーパー面により覆い体は接続管の管軸芯方向に押し付けられ、覆い体は接続管に圧接されて液密を保持する接着が確実となる。
【００１７】
請求項３記載の発明の管接続口装置は、係合突起が係合凹部の外端側の拡がった開口部から円滑に係合され、半割り受口部の直線状係合突部に覆い体の両側縁部を容易に係合できる。
【００１８】
請求項４記載の発明の管接続口装置は、被接続体の半割り受口部に形成した上半部の円弧状係合溝部に覆い体の半円弧状の嵌合端縁を嵌挿して接続体の被接続管部に形成した上半部の円弧状係合突部に覆い体の突出部が当たるまで、覆い体の被叩き部をプラスチックハンマーなどにて叩打することにより、確実に円弧状係合溝部に嵌合端縁が嵌挿され、接続管の接続作業が容易となる。
【００１９】
請求項５記載の発明の管接続口装置は、被接続体の被接続管部に形成した円弧状係合突部の端面に覆い体の突出部が当接し、覆い体の係止片が被接続管部の円弧状係合突部に係合して覆い体の抜け外れが防止される。
【００２０】
【実施例】
次に、本発明の管接続口装置の一実施例の構成を汚水桝の流入口または流出口などの被接続管部に接続管としての排水管を接続する管接続口装置を図１ないし図７に基づいて説明する。
【００２１】
図１および図２において、10は被接続体、例えば塩化ビニル樹脂などの合成樹脂からなる汚水桝本体で、この汚水桝本体10の上部には上向き開口された筒状の掃除口11が一体に突設され、この汚水桝本体10の両端部にはインバート部12の両端と連通し底部が同一面となる被接続管部となる筒状の流入口部13と流出口部14がそれぞれ形成されている。
【００２２】
また、汚水桝本体10の流入口部13と流出口部14は、先端側に略軸芯を通る水平面から上半部を切り欠いた半割り受口部15をそれぞれ形成し、この半割り受口部15の下半部16の先端側に拡径した接続管嵌着部17を形成し、この接続管嵌着部17の内端部の内面全周に接続管が当接するストッパー段部20を形成する。また、この半割り受口部15の上半部21に軸心方向と直交する半円弧縁状の切断縁22に沿って、外周側に端面に開口した円弧状係合溝部23を形成した円弧状係合突部24を突設する。そして、前記ストッパー段部20の端面と上半部の軸心方向と直交する半円弧縁状の切断縁22の端面とが略同一面となっている。
【００２３】
また、前記円弧状係合溝部23の内周上面部はこの円弧状係合溝部23の内端側から外端側に向って拡径する方向に傾斜したテーパー面25に形成されている。
【００２４】
さらに、前記半割り受口部15の下半部16に形成した接続管嵌着部17には前記円弧状係合突部24に連続してこの半割り受口部15の下半部16の軸線方向に延びる両側切断縁26に沿って、この接続管嵌着部17に接続管の肉厚寸法を拡径した外側位置に直線状係合突部27を突設する。また、この接続管嵌着部17の軸芯方向に延びる両側切断縁26の端面には略Ｖ字状の係合凹条28が形成されている。
【００２５】
また、前記両側直線状係合突部27の外端側には、この両側直線状係合突部27の内面側および外端側に開口した係合凹部30がそれぞれ形成されている。この両側の係合凹部30の内側上面32は外端側が図３に示すように高さが高くなる方向に傾斜して拡がった傾斜面32a にそれぞれ形成されるとともに図５に示すようにこの係合凹部30の内側上面32はそれぞれ略軸芯に向って下向きに傾斜した傾斜面に形成されている。
【００２６】
次に、40は前記半割り受口部15の切り欠いた上半部を覆う覆い体で、塩化ビニル樹脂などの合成樹脂にてこの半割り受口部15の切り欠いた上半部の形状と同一の円弧面形状を成している。この覆い体40の一端部には前記円弧状係合溝部23に嵌挿される半円弧状の嵌合端縁41が延出形成され、この嵌合端縁41の外周面は先端側から漸次肉厚が厚くなるように傾斜したテーパー面42に形成され、この嵌合端縁41は前記半割り受口部15の上半部21の円弧状係合溝部23に嵌挿されるようになっている。
【００２７】
また、この覆い体40の両側縁部43の外面部は前記半割り受口部15の直線状係合突部27の内面側に圧接係合されるようになっている。そして、この覆い体40の両側縁部43の端面には前記半割り受口部15の接続管嵌着部17の両側切断縁26に形成した係合凹条28に係合する係合突条43a が形成されている。
【００２８】
さらに、この覆い体40の両側縁部の外端側の外面部には前記半割り受口部15に形成した係合凹部30に係合される係合突起44がそれぞれ突設されている。この係合突起44の上面45は図５に示すようにそれぞれ略軸芯方向に向って下向きに傾斜した傾斜面に形成されている。
【００２９】
また、前記覆い体40の一端側の外周面中央部には上半部の円弧状係合突部24の端面に当接する突出部47が突設されており、さらに、この覆い体40の他端部外周面に肉厚の被叩き部48が突設されている。
【００３０】
また、前記覆い体40の突出部47には先端に係合鉤部50a を有し前記半割り受口部15の円弧縁状係合突部24に係合して抜け外れを防止する係止片50が突設されている。
【００３１】
そして、前記半割り受口部15の下半部16に覆い体40が嵌着されることにより、前記接続管嵌着部17と同一軸芯の受口51が形成されるようになっている。
【００３２】
なお、図２に示すように前記汚水桝本体10には側面に合流する枝管の流入口部52が形成されている。
【００３３】
次に、この実施例の作用について説明する。
【００３４】
既設排水管路の途中に汚水桝を設置するとき、汚水桝本体10の半割り受口部15の上半部の半円弧縁状の切断縁22端面間の長さＬに相当する長さ分、既設の接続管の排水管を切断し、この排水管を切断した部分を深く掘る。
【００３５】
次いで、汚水桝本体10の流入口部13および流出口部14の上半部を切り欠いた半割り受口部15の接続管嵌着部17の内面、切断端面22と接続管53の外周面とに接着剤を塗布し、下側から汚水桝本体10の流入口部13および流出口部14の半割り受口部15を接続管の切断端部をそれぞれ当てがって上方に向って開口した接続管嵌着部17に接続管を当接し、接続管の切断端部を半割り受口部15の下半部16の先端側を拡径して内面全周に形成したストッパー段部20に当接して接着するとともに接続管の切断端面は切断縁22に当接接着する。
【００３６】
次いで、半割り受口部15の円弧状係合溝部23の内面、直線状係合突部27の両側切断縁26に沿う上面および内面端面と、覆い体40の内面、嵌合端縁41のテーパー面42、両側縁部43の端面と接続管の外面とにそれぞれ接着剤を塗布し、覆い体40を半割り受口部15の切り欠いた上半部に嵌着して接続管の上半部を覆い、覆い体40の半円弧状の嵌合端縁41を円弧状係合溝部23にあてがい上半部21の円弧状係合突部24の端面に覆い体40の突出部47が当たるまで覆い体40の被叩き部48をプラスチックハンマーなどにて叩打し、この半割り受口部15に形成した上半部21の半円弧縁状の切断縁22に沿って外周側に端面に開口されている円弧状係合溝部23に覆い体40に延出した半円弧状の嵌合端縁41を嵌挿して接着するとともに、この覆い体40の両側縁部43の端面を半割り受口部15の下半部の軸線方向に延びる両側切断縁26に当接接着することにより、覆い体40の内面は接続管の外面に接着される。
【００３７】
そして、半割り受口部15の円弧状係合溝部23の内側上面部のテーパー面25と覆い体40の嵌合端縁41に形成したテーパー面42との係合により覆い体40は接続管の管軸芯方向に押し付けられ、覆い体40は接続管に圧接されて液密を保持する接着が確実となる。
【００３８】
このとき、覆い体40の両側縁部43の端面に形成した係合突条43a が半割り受口部15の接続管嵌着部17の両側切断縁26に形成した係合凹条28に係合され、接着面積が拡がり液密性が高まる。
【００３９】
さらに、半割り受口部15の円弧状係合溝部23に覆い体40の嵌合端縁41が嵌挿されるときに、覆い体40の両側縁部43の外端側の外面部に形成した係合突起44が半割り受口部15に形成した係合凹部30に係合される。このとき、覆い体40の係合突起44は係合凹部30にその内側上面32の外端側の高さを拡げた傾斜面32a が案内となって円滑に係合され、両側直線状係合突部27の係合凹部30と覆い体40の係合突起44との係合で、円弧状係合溝部23と嵌合端縁41との係合部と離間した部分でも、半割り受口部15の軸方向の切断縁と覆い体40の両側端縁との接合が保持される。
【００４０】
さらに、覆い体40の突出部47から突設した係止片50の先端係合鉤部50a が半割り受口部15の円弧縁状係合突部24に係合して覆い体40の抜け外れが防止される。
【００４１】
そして、汚水桝本体10の枝管の流入口部52に枝管の接続管を接続する。
【００４２】
また、前記実施例では、汚水桝本体10の半割り受口部15の上半部21の円弧状係合溝部23の内側上面部をテーパー面25とし、覆い体40の嵌合端縁41の外周面をテーパー面42に形成したが、いずれか一方のみをテーパー面とすることもできる。
【００４３】
さらに、前記覆い体40の両側縁部43の端面に係合突条43a を形成し、半割り受口部15の接続管嵌着部17の両側切断縁26に係合凹条28を形成したが、覆い体40の両側縁部43の端面に係合凹条を形成し、半割り受口部15の接続管嵌着部17の両側切断縁26に係合突条28を形成することもできる。
【００４４】
また、汚水桝本体10の枝管の流入口部52も前記半割り受口部15と覆い部40からなる管接続口装置を用いることもできる。
【００４５】
さらに、前記実施例では、汚水桝本体10には合流枝管流入口部52を形成した構成について説明したが、合流枝管流入口部を形成しない汚水桝にも適用でき、さらに、汚水桝に限らず、分岐管継ぎ手など各種の管接続口装置に適用できる。
【００４６】
【発明の効果】
請求項１記載の発明によれば、既設排水管路の途中に汚水桝などの被接続体を設置するときは、この既設管を被接続体の半割り受口部の上半部の半円弧縁状の切断縁端面間の長さに合わせて切断することにより、既設排水管路に被接続体を接続でき、排水管の切断長さを短くすることができるとともに、施工のスペースを狭くすることができ、狭い箇所でも施工が容易できる。また、余分な配管材料を必要とせず、コストを低下することができる。さらに、被接続体の被接続管部の半割り受口部に嵌着した接続管の端面は被接続体の被接続管部に形成したストッパー段部の端面と上半部の軸心方向と直交する半円弧縁状の切断縁の端面とに当接することにより、ストッパー段部の端面および上半部の半円弧縁状の切断縁の端面と接続管の端面との間に窪み凹部が形成されないので、接続管から被接続体の被接続管部に流入する流体または被接続体の被接続管部から接続管に流れる流体は引っ掛かることなく円滑に流れる。そして、被接続体の被接続管部に形成した両側直線状係合突部の係合凹部と覆い体の係合突起との係合で、円弧状係合溝部と嵌合端縁との係合部から離間した部分でも、半割り受口部の軸方向の切断縁と覆い体の両側端縁との接合が保持され、液密性が向上する。
【００４７】
請求項２記載の発明によれば、被接続体の被接続管部の円弧状係合溝部に嵌挿される覆い体の嵌合端縁は、係合溝部の内端側から外端側に向って拡径する方向に傾斜したテーパー面により覆い体は接続管の管軸芯方向に押し付けられ、覆い体は接続管に圧接されて液密を保持する接着が確実となる。
【００４８】
請求項３記載の発明によれば、被接続体の被接続管部の直線状係合突部に形成した係合凹部に覆い体の係合突起が円滑に係合され、半割り受口部の軸方向の切断縁と覆い体の両側端縁との接合が円滑に行われる。
【００４９】
請求項４記載の発明によれば、被接続体の半割り受口部に形成した上半部の円弧状係合溝部に覆い体の半円弧状の嵌合端縁を嵌挿して接続体の被接続管部に形成した上半部の円弧状係合突部に覆い体の突出部が当たるまで覆い体の被叩き部をプラスチックハンマーなどにて叩打することにより、確実に円弧状係合溝部に嵌合端縁が嵌挿され、接続管の接続作業が容易となる。
【００５０】
請求項５記載の発明によれば、被接続体の被接続管部に形成した円弧状係合突部の端面に覆い体の突出部が当接し、覆い体の係止片が被接続管部の円弧状係合突部に係合して覆い体の抜け外れが確実に防止される。
【図面の簡単な説明】
【図１】本発明の一実施例を示す管接続口装置の分解斜視図である。
【図２】同上管接続口装置を汚水桝の被接続管部に実施した実施例を示す縦断面図である。
【図３】同上管接続口装置部の縦断面図である。
【図４】同上右側面図である。
【図５】図４における被接続管部の接合部の拡大右側面図である。
【図６】同上覆い体の右側面図である。
【図７】同上汚水桝の施工状態の説明図である。
【図８】従来の汚水桝を施工する状態の説明図である。
【図９】同上汚水桝を施工した状態を示す説明図である。
【符号の説明】
10 被接続体の汚水桝本体
13 被接続管部の流入口部
14 被接続管部の流出口部
15 半割り受口部
16 下半部
20 ストッパー段部
22 半円弧縁状の切断縁
23 円弧状係合溝部
24 円弧状係合突部
25，42 テーパー面
27 直線状係合突部
30 係合凹部
40 覆い体
41 嵌合端縁
44 係合突起
47 突出部
48 被叩き部[0001]
[Industrial applications]
The present invention relates to a pipe connection device for a pipe-connected body such as a sewage basin or a branch pipe joint connected to a drainage pipe, and more particularly to an apparatus suitable for installation in an existing drainage pipe.
[0002]
[Prior art]
Conventionally, in the case of connecting a sewage basin, for example, in the middle of an existing drainage pipe, it must be connected so that no uneven portion is formed on the inner peripheral surface of the drainage pipe, and connected to both ends of the sewage basin. The inner end of the drain pipe is inserted up to the stopper step at the back end of the inlet on the inflow side and the outflow side of the sewage basin. It is made to be flush with the peripheral surface. As shown in FIGS. 8 and 9, when installing a pipe to be connected, for example, a sewage basin body 1 in an existing drainage pipe, at least an expansion joint 2 and a socket 3 are required as piping materials. The location of the pipe where the sewage basin body 1 is to be installed is defined by the sum of the lengths of the sewage basin body 1 and two necessary piping materials, that is, the total length l1 of the sewage basin body 1 to be installed, Cut the sum of the minimum length l2 of the expansion joint 2 and approximately half the length l3 of the socket 3, and firstly, the receiving portion 4 of one pipe connection port on the downstream side of the sewage basin body 1 One of the cut ends 5 of the existing drain pipe 9 is inserted and adhered to the outer pipe 7, and then the outside of the expansion joint 2 formed by the outer pipe 7 and the small-diameter inner pipe 6 fitted to the outer pipe 7. The connection port of the pipe 7 is fitted and bonded to the other receiving portion 8 on the upstream side of the wastewater basin main body 1. The expansion joint 2 is eccentric, the bottom surfaces of the inner tube 6 and the outer tube 7 are formed flush with each other, and an annular rubber ring is fitted between the outer tube 7 and the small-diameter inner tube 6. I have. Then, the socket 3 is bonded to the other cut end portion 5a of the existing drain pipe 9, and in this state, the inner pipe 6 of the expansion joint 2 is pulled out, fitted to the socket 3, and bonded. Have been.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned conventional construction method, the cutting length of the existing pipeline is long, and when the space for installing the sewage basin body in the existing pipeline is narrow, and when the sewage basin and the sewage basin installed in the existing pipeline are installed. There is a problem that construction is complicated and work is difficult to perform in a place where there is not much space between them, and a connected object such as a sewage basin may not be connected.
[0004]
In addition, expansion joints and sockets are indispensable as piping materials, and there is a problem that the cost is increased.
[0005]
The present invention has been made in view of such problems, and the connection of a connected pipe such as a sewage basin can be easily performed even in a small construction place, and is required in a conventional construction method. There is no need for extra piping material such as expansion joints and sockets, and it can also be used for new drainage pipes.Especially, connected pipes such as sewage basins and branch joints can be easily connected in the middle of existing pipes. It is intended to provide a pipe connection device which can be used.
[0006]
[Means for Solving the Problems]
In the pipe connection port device according to the first aspect of the invention, the connection pipe portion of the connection body to which the connection pipe is connected forms a half receiving port portion in which an upper half portion is cut off at a distal end side. The diameter of the distal end of the lower half of the socket is enlarged to form a stopper step where the connecting pipe abuts on the entire inner surface, and a semicircle orthogonal to the axial direction is formed on the upper half of this half of the socket. An arcuate engagement projection is provided along the arcuate cutting edge, the arcuate engagement protrusion having the end face of the stopper step substantially flush with the end surface of the stopper step, and an arcuate engagement opening at an outer end surface of the arcuate engagement protrusion. A linear engaging projection is formed along the cutting edge extending in the axial direction of the lower half portion of the half receiving portion continuously with the arcuate engaging projection while forming the mating groove, The cover body covering the cut-out upper half of the half receiving portion of the connected body has the same arc shape as the cut-out upper half of the half receiving portion, and The cover is fitted in the cutout portion of the half receiving opening of the connection body, and a semicircular fitting edge extending toward the inner end side of the cover is fitted into the arcuate engagement groove. At the same time, the lower end edges of both sides are engaged with the inner surface side of the linear engagement projection, and the inner end side and the outer side of the both-side linear engagement projection formed on the connected pipe portion of the connected object are formed. An engagement recess is formed on the end side, and engagement projections engaged with the engagement recess are provided on the outer ends of the outer peripheral surfaces on both sides of the cover .
[0007]
According to a second aspect of the present invention, there is provided the pipe connection port device according to the first aspect, wherein an inner circumferential upper surface of the arcuate engagement groove formed in the connected pipe portion of the connected body and the arcuate shape. At least one of the outer peripheral surface of the fitting edge of the covering body fitted into the engagement groove portion is a tapered surface inclined in a direction in which the diameter increases from the inner end side to the outer end side of the engagement groove portion. Things .
[0008]
According to a third aspect of the present invention, there is provided the pipe connection device according to the first or second aspect, wherein the engagement concave portion has an enlarged outer end side opening.
[0009]
According to a fourth aspect of the present invention, there is provided the pipe connection device according to any one of the first to third aspects, wherein the outer peripheral surface on the inner end side of the cover is formed on the connected pipe portion of the connected body. A projection is formed to contact the arcuate engagement projection of the upper half, and a hit portion is projected from the outer peripheral surface of the outer end.
[0010]
According to a fifth aspect of the present invention, there is provided the pipe connection apparatus according to any one of the first to fourth aspects, wherein the connection pipe of the connection target is formed on the protrusion formed on the outer peripheral surface on the inner end side of the cover. A locking piece is provided for engaging with the arcuate engaging projection formed on the portion to prevent the cover from coming off.
[0011]
[Action]
The pipe connection port device according to the first aspect of the present invention provides a drainage pipe or the like from above, which is open to a half receiving port portion formed by cutting off an upper half formed on the distal end side of a connected pipe portion of a connected body. And one end of the connecting pipe is brought into contact with a stopper step formed on the entire circumference of the inner surface by increasing the diameter of the distal end of the lower half of the half receiving opening. Then, a cover is fitted to the cut-out upper half of the half receiving opening of the connected body to cover the upper half of the connecting pipe, and the upper half semicircular arc formed in the half receiving opening is formed. A semi-circular fitting edge extending to one end of the cover is inserted into and adhered to an arc-shaped engaging groove which is open to the end face on the outer peripheral side along the edge-shaped cutting edge. The two side edges of the cover are abutted and adhered to the both cut edges extending in the axial direction of the lower half portion of the half receiving portion, and the outer peripheral surfaces of both side edges of the cover are axially aligned with the lower half portion of the half receiving portion. Are engaged with the linear engaging projections protruding along the cutting edges on both sides extending to the outside, and the inner surface of the cover is bonded to the outer peripheral surface of the connecting pipe.
[0012]
Then, the end face of the connection pipe fitted into the half receiving opening, which is formed by cutting out the upper half part of the connection pipe part of the connection body, is connected to the end face of the stopper step formed in the connection pipe part of the connection body. Abutting against the end face of the semi-arc-shaped cutting edge orthogonal to the axial direction of the half part, the end face of the stopper stepped part and the end face of the semi-arc-shaped cutting edge of the upper half and the end face of the connecting pipe No depressed concave portion is formed therebetween, and the fluid flowing from the connecting pipe to the connected pipe portion of the connected body or the fluid flowing from the connected pipe section of the connected body to the connecting pipe flows without being caught.
[0013]
In addition, a connecting pipe can be fitted from above the opening in the half receiving opening in which the upper half of the connected pipe section of the connected body is cut out, and the connected body is connected to a connecting pipe such as an existing drain pipe. The cutting length of the connecting pipe at the time can be shortened, and the construction work can be easily performed even in a narrow place.
[0014]
When installing a connected body such as a sewage basin in the middle of the existing drainage pipe, connect the existing pipe to the half-arc-shaped cut edge end face of the upper half of the half receiving port of the connected body. By cutting according to the length, the connected object can be connected to the existing drainage pipe.
[0015]
Further, the engagement between the engagement recesses of the linear engagement projections on both sides formed on the connected pipe portion of the object to be connected and the engagement projections of the cover body allows the engagement between the arcuate engagement groove and the fitting edge. Even at a portion separated from the joint portion, the joint between the axially cut edge of the half-split port portion and both side edges of the cover is maintained.
[0016]
According to a second aspect of the present invention, the fitting edge of the cover inserted into the arc-shaped engagement groove of the connected pipe portion of the connected body has an inner end and an outer end of the engagement groove. The covering body is pressed in the direction of the pipe axis of the connecting pipe by the tapered surface inclined in the direction of increasing the diameter toward the side, and the covering body is pressed against the connecting pipe to ensure the adhesion for maintaining the liquid tightness .
[0017]
According to a third aspect of the present invention, the engagement projection is smoothly engaged with the enlarged opening on the outer end side of the engagement recess, and covers the linear engagement projection of the half receiving opening. Both sides of the body can be easily engaged.
[0018]
According to a fourth aspect of the present invention, the semicircular fitting edge of the cover is inserted into the upper semicircular engagement groove formed in the half receiving portion of the connected body. By hitting the to-be-hitted portion of the cover with a plastic hammer or the like until the protrusion of the cover hits the arc-shaped engagement protrusion of the upper half formed on the connected pipe portion of the connection body, the circle is securely formed. The fitting edge is inserted into the arcuate engagement groove, and the connection work of the connection pipe is facilitated.
[0019]
According to a fifth aspect of the present invention, the projection of the cover comes into contact with the end face of the arcuate engagement projection formed on the connected pipe portion of the connected body, and the locking piece of the cover is covered with the engagement piece. The cover is prevented from coming off by engaging with the arcuate engaging projection of the connecting tube.
[0020]
【Example】
Next, the configuration of an embodiment of the pipe connection device of the present invention will be described with reference to FIG. 1 through FIG. 7 will be described.
[0021]
1 and 2, reference numeral 10 denotes a connected body, for example, a sewage basin body made of a synthetic resin such as a vinyl chloride resin, and a cylindrical cleaning opening 11 having an upward opening is integrally formed on an upper portion of the sewage basin body 10. At the both ends of the sewage basin main body 10, a cylindrical inlet 13 and an outlet 14 are formed at both ends of the sewage basin body 10 so as to be connected to the ends of the inverting portion 12 and have the same bottom surface. ing.
[0022]
Further, the inflow port 13 and the outflow port 14 of the sewage basin main body 10 form a half receiving portion 15 in which the upper half is cut off from the horizontal plane passing through the substantially axis at the tip end side. A connecting pipe fitting portion 17 having an enlarged diameter is formed on the distal end side of the lower half portion 16 of the mouth portion 15, and a stopper step portion 20 with which the connecting pipe abuts on the entire inner surface of the inner end of the connecting pipe fitting portion 17. To form In addition, a circle formed with an arc-shaped engagement groove portion 23 which is open on the outer peripheral surface at the outer peripheral side along a semi-circular edge-shaped cutting edge 22 orthogonal to the axial direction in the upper half portion 21 of the half receiving portion 15. An arcuate engagement projection 24 is provided. The end face of the stopper step 20 and the end face of the cutting edge 22 having a semicircular edge perpendicular to the axial direction of the upper half are substantially flush with each other.
[0023]
The inner peripheral upper surface of the arcuate engagement groove 23 is formed as a tapered surface 25 that is inclined in a direction in which the diameter increases from the inner end to the outer end of the arcuate engagement groove 23.
[0024]
Further, the connecting pipe fitting portion 17 formed in the lower half portion 16 of the half receiving portion 15 is formed of the lower half portion 16 of the half receiving portion 15 continuously with the arc-shaped engaging projection 24. Along a cutting edge 26 on both sides extending in the axial direction, a straight engaging projection 27 is provided on the connecting pipe fitting portion 17 at an outer position where the thickness of the connecting pipe is increased in diameter. A substantially V-shaped engaging recess 28 is formed on the end surface of both cut edges 26 extending in the axial direction of the connection pipe fitting portion 17.
[0025]
On the outer end side of the linear engagement projections 27 on both sides, engagement recesses 30 opened on the inner surface side and the outer end side of the linear engagement projections 27 on both sides are respectively formed. The inner upper surface 32 of each of the engagement recesses 30 on both sides is formed on an inclined surface 32a whose outer end side is inclined and expanded in a direction of increasing height as shown in FIG. 3, and as shown in FIG. The inner upper surface 32 of the combination recess 30 is formed as an inclined surface that is inclined downward toward the axis.
[0026]
Next, reference numeral 40 denotes a covering member that covers the cut-out upper half of the cut-out receiving portion 15, and the cut-out upper half of the cut-out receiving portion 15 is made of synthetic resin such as vinyl chloride resin. And has the same arc shape as that of. A semicircular fitting edge 41 to be inserted into the arcuate engaging groove 23 is formed at one end of the cover body 40 so as to extend therefrom. The fitting edge 41 is formed in a tapered surface 42 inclined so as to be thicker, and the fitting edge 41 is inserted into the arc-shaped engaging groove 23 of the upper half 21 of the half receiving port 15. .
[0027]
The outer surfaces of both side edges 43 of the cover body 40 are pressed into engagement with the inner surfaces of the linear engaging projections 27 of the half-split receiving portion 15. On the end surfaces of both side edges 43 of the cover body 40, engagement projections that engage with engagement recesses 28 formed on both side cut edges 26 of the connection pipe fitting portion 17 of the half receiving portion 15. 43a is formed.
[0028]
Further, engaging projections 44 to be engaged with the engaging concave portions 30 formed in the half-split receiving portions 15 are provided on the outer surface portions on the outer end sides of both side edges of the cover body 40, respectively. As shown in FIG. 5, the upper surface 45 of each of the engagement projections 44 is formed as an inclined surface which is inclined downward toward the direction of the axis.
[0029]
At the center of the outer peripheral surface on one end side of the cover body 40, a protrusion 47 is provided so as to be in contact with the end face of the arcuate engagement protrusion 24 of the upper half part. A thick hitting portion 48 protrudes from the outer peripheral surface of the end portion.
[0030]
The projecting portion 47 of the cover 40 has an engaging hook portion 50a at the tip, and engages with the arc-shaped engaging projecting portion 24 of the half receiving portion 15 to prevent it from coming off. A piece 50 protrudes.
[0031]
Then, the cover body 40 is fitted to the lower half portion 16 of the half-split receiving portion 15, so that the receiving port 51 having the same axis as the connecting pipe fitting portion 17 is formed. .
[0032]
As shown in FIG. 2, the sewage basin main body 10 is formed with an inflow portion 52 of a branch pipe that merges with a side surface.
[0033]
Next, the operation of this embodiment will be described.
[0034]
When the sewage basin is installed in the middle of the existing drainage pipe, the length corresponding to the length L between the end faces of the semicircular-arc-shaped cut edge 22 of the upper half of the halved receiving portion 15 of the sewage basin body 10 Then, the drain pipe of the existing connecting pipe is cut, and the cut portion of the drain pipe is dug deep.
[0035]
Next, the inner surface of the connecting pipe fitting portion 17 of the half receiving port portion 15 in which the upper half portion of the inflow portion 13 and the outflow portion 14 of the sewage basin body 10 is cut off, the outer peripheral surface of the cut end face 22 and the connecting pipe 53 An adhesive is applied, and the inflow portion 13 and the half receiving portion 15 of the outflow portion 14 of the sewage basin body 10 are opened upward from below with the cut ends of the connection pipes respectively applied thereto. A stopper step 20 formed by abutting the connection pipe on the connection pipe fitting portion 17 formed, expanding the cut end of the connection pipe in half and expanding the distal end side of the lower half 16 of the receiving portion 15 over the entire inner surface. And the cut end face of the connection tube is bonded to the cut edge 22.
[0036]
Next, the inner surface of the arcuate engagement groove portion 23 of the half receiving portion 15, the upper surface and the inner surface end surface along the both-side cutting edge 26 of the linear engagement protrusion 27, the inner surface of the cover body 40, the fitting edge 41 An adhesive is applied to each of the tapered surface 42, the end surfaces of the side edges 43, and the outer surface of the connection tube, and the cover 40 is fitted to the cut-out upper half of the half receiving port portion 15 so that the top surface of the connection tube is Covering the half part, the semicircular fitting edge 41 of the covering body 40 is applied to the arcuate engaging groove 23, and the projection 47 of the covering body 40 is provided on the end face of the arcuate engaging projection 24 of the upper half part 21. The hitting part 48 of the covering body 40 is hit with a plastic hammer or the like until it hits, and along the cutting edge 22 of the upper half part 21 formed in the half receiving part 15 on the outer peripheral side along the cutting edge 22 of a semicircular edge. The semicircular fitting edge 41 extending from the cover 40 is inserted into and adhered to the opened arcuate engagement groove 23, and the end faces of both side edges 43 of the cover 40 are half-split. Mouth 15 By contacting the adhesive on both sides cutting edges 26 extending in the axial direction of the lower half, the inner surface of the cover body 40 is bonded to the outer surface of the connecting tube.
[0037]
The cover 40 is connected to the connecting pipe by the engagement between the tapered surface 25 on the inner upper surface of the arcuate engagement groove 23 of the half-split receiving portion 15 and the tapered surface 42 formed on the fitting edge 41 of the cover 40. And the cover 40 is pressed against the connecting pipe to ensure adhesion to maintain liquid tightness.
[0038]
At this time, the engaging ridges 43a formed on the end surfaces of the both side edges 43 of the cover body 40 are engaged with the engaging concave ridges 28 formed on both side cutting edges 26 of the connection pipe fitting portion 17 of the half receiving port portion 15. As a result, the bonding area is increased and the liquid tightness is improved.
[0039]
Furthermore, when the fitting edge 41 of the cover 40 is fitted into the arcuate engagement groove 23 of the half receiving portion 15, it is formed on the outer surface of the outer edge of the side edge 43 of the cover 40. The engaging protrusion 44 is engaged with the engaging concave portion 30 formed in the half receiving portion 15. At this time, the engaging projections 44 of the cover body 40 are smoothly engaged with the engaging recesses 30 by using the inclined surfaces 32a having the height of the outer end side of the inner upper surface 32 expanded as guides. The engagement between the engagement recess 30 of the protrusion 27 and the engagement protrusion 44 of the cover 40 allows the half-split port to be separated from the engagement between the arcuate engagement groove 23 and the fitting edge 41. The joint between the axial cutting edge of the portion 15 and both side edges of the cover 40 is maintained.
[0040]
Further, the tip engaging hook 50a of the locking piece 50 protruding from the projecting portion 47 of the cover 40 engages with the arcuate edge-like engaging protrusion 24 of the half receiving portion 15, and the cover 40 comes off. Detachment is prevented.
[0041]
Then, the connecting pipe of the branch pipe is connected to the inlet 52 of the branch pipe of the sewage basin body 10.
[0042]
Further, in the above embodiment, the upper surface inside the arcuate engagement groove 23 of the upper half 21 of the half receiving opening 15 of the sewage basin main body 10 is a tapered surface 25, and the fitting edge 41 of the cover 40 is Although the outer peripheral surface is formed as the tapered surface 42, only one of them may be a tapered surface.
[0043]
Further, engaging projections 43a were formed on the end faces of both side edges 43 of the cover body 40, and engaging recesses 28 were formed on both side cutting edges 26 of the connection pipe fitting portion 17 of the half receiving port 15. However, it is also possible to form engagement recesses on the end surfaces of both side edges 43 of the cover body 40 and to form engagement projections 28 on both side cut edges 26 of the connection pipe fitting portion 17 of the half receiving opening 15. it can.
[0044]
Further, the inlet port 52 of the branch pipe of the sewage basin main body 10 can also use a pipe connection port device including the half receiving port 15 and the cover 40.
[0045]
Further, in the above-described embodiment, the configuration in which the merging branch pipe inlet portion 52 is formed in the sewage basin main body 10 has been described. However, the present invention can be applied to a sewage basin not forming the merging branch pipe inlet portion. The present invention is not limited to this, and can be applied to various pipe connection devices such as a branch pipe joint.
[0046]
【The invention's effect】
According to the first aspect of the present invention, when a connected object such as a sewage basin is installed in the middle of an existing drainage pipe, the existing pipe is connected to a semi-circular arc of an upper half of a half receiving port of the connected object. By cutting according to the length between the edge-shaped cutting edge end surfaces, the connected body can be connected to the existing drainage pipe, the cutting length of the drainage pipe can be shortened, and the construction space is narrowed. Construction can be performed easily even in narrow places. Further, no extra piping material is required, and the cost can be reduced. Furthermore, the end face of the connection pipe fitted to the half-receiving opening of the connection pipe part of the connection body has an end face of a stopper step formed in the connection pipe part of the connection body and the axial direction of the upper half part. Abutment is formed between the end face of the stopper step and the end face of the semi-arc-shaped cutting edge of the upper half and the end face of the connecting pipe by abutting on the end face of the orthogonal semi-arc-shaped cutting edge. because it is not, the fluid flowing from the connecting pipe to the connecting pipe from the connecting tube portion of the fluid or object to be connected which flows into the connecting tube portion of the object to be connected is smoothly flow without being caught. The engagement between the engagement recesses of the linear engagement projections on both sides formed on the connected pipe portion of the object to be connected and the engagement projections of the cover body causes the engagement between the arcuate engagement groove and the fitting edge. Even at a portion separated from the joint portion, the joint between the axially cut edge of the half-split port portion and both side edges of the cover is maintained, and the liquid tightness is improved.
[0047]
According to the second aspect of the present invention, the fitting edge of the cover inserted into the arc-shaped engagement groove of the connected pipe portion of the connected body is directed from the inner end to the outer end of the engagement groove. The covering body is pressed in the direction of the pipe axis of the connecting pipe by the tapered surface inclined in the direction in which the diameter increases, and the covering body is pressed against the connecting pipe to ensure adhesion to maintain liquid tightness .
[0048]
According to the third aspect of the present invention, the engagement projection of the cover is smoothly engaged with the engagement recess formed in the linear engagement projection of the connected pipe portion of the connected body, and the half receiving port portion is provided. The joining between the cutting edge in the axial direction and the both side edges of the covering body is performed smoothly.
[0049]
According to the fourth aspect of the present invention, the semicircular fitting edge of the covering body is inserted into the arcuate engagement groove of the upper half formed in the half receiving opening of the connected body. By hitting the hit portion of the cover with a plastic hammer or the like until the protrusion of the cover comes into contact with the arc-shaped engagement protrusion of the upper half formed on the connected pipe portion, the arc-shaped engagement groove portion is securely formed. The fitting edge is inserted into the connection pipe, thereby facilitating the connection work of the connection pipe.
[0050]
According to the fifth aspect of the present invention, the protrusion of the cover comes into contact with the end face of the arcuate engagement protrusion formed on the connected pipe of the connected body, and the locking piece of the cover is connected to the connected pipe. And the cover is reliably prevented from coming off.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a pipe connection device according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing an embodiment in which the pipe connection port device is applied to a connected pipe portion of a wastewater basin.
FIG. 3 is a vertical sectional view of the pipe connection device.
FIG. 4 is a right side view of the same.
FIG. 5 is an enlarged right side view of a joint portion of the connected pipe portion in FIG.
FIG. 6 is a right side view of the covering body.
FIG. 7 is an explanatory view of a construction state of the wastewater basin according to the first embodiment.
FIG. 8 is an explanatory view of a state in which a conventional wastewater basin is constructed.
FIG. 9 is an explanatory view showing a state where the wastewater basin is constructed.
[Explanation of symbols]
10 Body of connected wastewater basin
13 Inflow port of connected pipe
14 Outlet of connected pipe
15 Half-split port
16 Lower half
20 Stopper step
22 Semi-circular cut edge
23 Arc-shaped engagement groove
24 Arc-shaped engaging projection
25, 42 tapered surface
27 Linear engagement projection
30 Engagement recess
40 wrap
41 Mating edge
44 Engagement projection
47 Projection
48 Target part

Claims

The connected pipe portion of the connected body for connecting the connection pipe forms a half receiving opening with a cut-out upper half at the distal end, and the distal end of the lower half of the half receiving opening is enlarged. A stopper step is formed around the entire inner surface with which the connecting pipe abuts, and an end face of the stopper step is formed along a semicircular cut edge orthogonal to the axial direction at an upper half of the half receiving portion. And an arcuate engaging projection having substantially the same surface as that of the arcuate engaging projection is formed. An arcuate engaging groove is formed on an outer end surface of the arcuate engaging projection. A straight engagement projection is projected along the cut edge on both sides extending in the axial direction of the lower half of the half receiving port portion continuously to
The covering body that covers the cut-out upper half of the half receiving port portion of the connected object has the same arc surface shape as the cut-out upper half portion of the half receiving port portion,
The cover is fitted into the cutout portion of the half receiving portion of the connected body, and a semicircular fitting edge extending toward the inner end side of the cover is fitted to the arcuate engagement groove. At the same time, the lower end edges on both sides are engaged with the inner surface side of the linear engagement projection , and
An engagement recess is formed at the outer end of the linear engagement protrusion on both sides formed on the connected pipe portion of the connected body, and the engagement recess is opened at the inner surface and the outer end. A pipe connection device , wherein engagement projections are provided on outer end sides of both outer peripheral surfaces of the cover, respectively .

At least one of the inner peripheral upper surface of the arc-shaped engagement groove formed in the connected pipe portion of the connected object and the outer peripheral surface of the fitting edge of the cover fitted in the arc-shaped engagement groove is removed. 2. The pipe connection port device according to claim 1, wherein the engagement groove portion has a tapered surface inclined in a direction of increasing in diameter from an inner end side to an outer end side.

3. The pipe connection port device according to claim 1, wherein the engagement recess has an enlarged outer end opening.

On the outer peripheral surface on the inner end side of the covering body, a projection is formed to be in contact with the arcuate engagement projection of the upper half formed on the connected pipe portion of the connected body, and a hitting portion is formed on the outer peripheral surface of the outer end portion. The pipe connection device according to any one of claims 1 to 3 , wherein the connection device is protruded.

A locking piece is provided on the projection formed on the outer peripheral surface on the inner end side of the cover to engage with the arc-shaped engagement projection formed on the connected pipe of the connected body to prevent the cover from coming off. The pipe connection device according to any one of claims 1 to 4 , wherein: