JP3893219B2

JP3893219B2 - Inlet valve connector

Info

Publication number: JP3893219B2
Application number: JP17480098A
Authority: JP
Inventors: 直志霜田; 邦雄武田
Original assignee: Maezawa Kasei Kogyo KK
Current assignee: Maezawa Kasei Kogyo KK
Priority date: 1998-06-22
Filing date: 1998-06-22
Publication date: 2007-03-14
Anticipated expiration: 2018-06-22
Also published as: JP2000009268A

Description

【０００１】
【発明の属する技術分野】
本発明は、通気管に吸気弁を接続する吸気弁用接続具に関する。
【０００２】
【従来の技術】
従来から、通気管と吸気弁との接続は、例えば、略円筒状の継手を用いて、接着剤により接続している。
【０００３】
すなわち、図６に示すように、天井裏等の比較的狭い場所に設置された通気管１の上端部外周面に継手２の下部内周面を嵌合させ接着剤にて接着し、この継手２の上部内周面に吸気弁３の弁本体４の下部に形成した管接続筒部５の外周面を嵌合させ接着剤にて接着して、通気管１の上端部に吸気弁３の管接続筒部５を接続している。
【０００４】
そして、例えば吸気弁３の不作動等に起因して、通気管１に接続した吸気弁３を交換するに際し、天井裏等の比較的狭い場所において、通気管１の上端部近傍を切断して吸気弁３を取り外し、次いで、交換する吸気弁３を通気管１の上端部近傍に新たな略円筒状の継手２を用いて接着剤にて接続して交換している。
【０００５】
【発明が解決しようとする課題】
しかしながら、上記従来のように、通気管１と吸気弁３との接続を、接着剤を用いて嵌合接着して接続する構成では、吸気弁３の交換に際し、通気管１の上端部近傍を切断する切断作業を必要とするため、吸気弁３の交換作業が煩雑である問題を有している。
【０００６】
本発明は、このような点に鑑みなされたもので、吸気弁を簡単に交換できる吸気弁用接続具を提供することを目的とする。
【０００７】
【課題を解決するための手段】
請求項１記載の吸気弁用接続具は、通気管の端部に、吸気弁の弁本体に形成された管接続筒部を接続する吸気弁用接続具であって、軸方向の一端側に形成され前記吸気弁の前記管接続筒部を内周側に嵌合する吸気弁側嵌合部、この吸気弁側嵌合部の端面に形成された支持面、および、軸方向の他端側に形成され前記通気管の端部を接続する通気管側嵌合部を有する管状体と、この管状体の前記吸気弁側嵌合部の外周側に位置する環状面、および、この環状面の一端側に形成され前記管状体の前記支持面と対向する押圧部を有し、前記管状体に回動可能に装着された袋ナット体と、前記管状体の前記支持面と前記袋ナット体の前記押圧部との間に配設され、前記袋ナット体の回動操作により前記押圧部で押圧した時に弾性変形して前記管接続筒部の外周面に当接しかつ前記袋ナット体の回動操作により前記押圧部による押圧を解除した時に前記管接続筒部の外周面より略離間する弾性を有するパッキング体とを具備し、前記管状体は、前記吸気弁側嵌合部の外周面上の位置でこの管状体の中心軸線に直交する直線上の対称位置に径方向に沿って形成された一対の突起部を有し、前記袋ナット体は、軸方向の中間部に周方向に沿った状態でこの周方向に対して略傾斜して形成され前記一対の突起部を案内する一対の案内用細長溝部を有するとともに、前記環状面の他端側に軸方向に沿った状態でこの軸方向の他端面から前記案内用細長溝部に連続して形成され前記一対の突起部をそれぞれ挿入する一対の挿入用溝部を有し、この各挿入用溝部の深さ寸法は、一端側では前記各突起部の突起寸法より小さい寸法としかつ他端側では前記各突起部の突起寸法より大きい寸法としたものである。
【０００８】
そして、この構成では、通気管に接続した吸気弁を交換するに際し、まず、管状体に回動可能に装着した袋ナット体を回動操作し、この袋ナット体の押圧部によるパッキング体の押圧を解除し、管状体の支持面に支持されたパッキング体を弾性により復元させることにより弁本体の管接続筒部の外周面より略離間させ、このパッキング体による管接続筒部の保持状態を解いて吸気弁を取り外し、次いで、交換する吸気弁の弁本体の管接続筒部を管状体の吸気弁側嵌合部の内周側に嵌合させてから袋ナット体を回動操作し、この袋ナット体の押圧部にてパッキング体を押圧して弾性変形させ、この弾性変形により弁本体の管接続筒部の外周面に当接させ、このパッキング体にて管接続筒部を保持して、吸気弁を接続する。また、管状体の吸気弁側嵌合部に形成された一対の突起部が、袋ナット体の軸方向の中間部に形成された一対の案内用細長溝部にて案内されるため、袋ナット体の回動操作によりパッキング体の押圧、押圧の解除を容易にできる。さらに、袋ナット体に管状体を装着するに際し、一対の突起部を一対の挿入用溝部にこの各挿入用溝部の他端側から一端側に向けてそれぞれ挿入し、一対の案内用細長溝部の内部に遊嵌させて装着するため、袋ナット体に管状体を簡単に装着でき、しかも、装着後に袋ナット体が管状体から分離することを防止する。
【０００９】
請求項２記載の吸気弁用接続具は、請求項１記載の吸気弁用接続具において、各案内用細長溝部は、長手方向の一端側に形成され袋ナット体の回動操作により押圧部でパッキング体を押圧した時に各突起部を保持するストッパを有するものである。
【００１０】
そして、この構成では、袋ナット体の回動操作により押圧部でパッキング体を押圧した時に、各突起部が、各案内用細長溝部のストッパにて保持されるため、袋ナット体の締付けが緩んでしまうことを防止する。
【００１１】
【発明の実施の形態】
以下、本発明の吸気弁用接続具の一実施の形態の構成を図面を参照して説明する。
【００１２】
図１において、11は通気管で、この通気管11は、塩化ビニル樹脂等にて成形され、図示しない排水管路系に外気を導くもので、上端部は、例えば屋内の天井裏等の比較的狭い場所に鉛直状に配設されている。
【００１３】
そして、この通気管11には、吸気弁12が吸気弁用接続具13および継手14を用いて鉛直状に接続されている。
【００１４】
この吸気弁12は、排水管路系の負圧時に開成して空気を吸入するもので、この吸気弁12は、例えば、弁本体16、弁体17およびカバー体18を備えている。
【００１５】
この弁本体16は、略筒状に成形され、下部には管接続筒部21が形成され、上部には多数の連結リブ22が突設され、これら連結リブ22間に通気開口24が形成され、さらに、上面中央部には吸気弁口25が形成されている。
【００１６】
また、弁体17は、弁本体16の上方にこの弁本体16に対して進退自在に配設されており、ゴムシート31とこのゴムシート31に装着されたシートガイド32とを有している。このゴムシート31は、弁本体16の通気開口24を開閉するもので、また、シートガイド32は、弁体17の進退時にゴムシート31を案内するものである。
【００１７】
さらに、カバー体18は、弁本体16の上部外周に固着されており、上面を閉塞し下面を開口した円筒状に成形され、内周側にはシートガイド32が摺動可能に嵌合されている。なお、このカバー体18の外表側は防寒カバー40で覆われている。
【００１８】
次いで、吸気弁用接続具13は、例えば、通気管11の上端部に、継手14を介して吸気弁12の弁本体16の管接続筒部21を接続するもので、この吸気弁用接続具13は、管状体41、袋ナット体42およびパッキング体43を備えている。
【００１９】
この管状体41は、塩化ビニル樹脂等にて上下面を開口した略円筒状に成形されたもので、この管状体41の上部には、吸気弁12の管接続筒部21を内周側に嵌合した吸気弁側嵌合部45が形成されている。また、この管状体41の下部には、通気管11の上端部に嵌合接着した塩化ビニル樹脂等からなる継手14を外周側に嵌合接着した通気管側嵌合部46が、吸気弁側嵌合部45の下端部に連続して形成されている。この吸気弁側嵌合部45は、通気管側嵌合部46より大きい径寸法で形成されており、この吸気弁側嵌合部45と通気管側嵌合部46との連結部分における内周面には、係止段部47が形成されている。また、この吸気弁側嵌合部45の上端面には、パッキング体43を支持する支持面49が形成されている。さらに、この吸気弁側嵌合部45の中間部における外周面上の位置でこの吸気弁側嵌合部45の中心軸線に直交する直線上の対称位置には、図２および図５に示すように、一対の突起部51が径方向に沿って円柱状に一体に形成されている。また、通気管側嵌合部46の上端部近傍における外周面には、例えば継手14を用いない場合に、通気管の上端部を必要に応じて係止する環状突条52が一体に形成されており、この環状突条52にて、通気管の上端部が袋ナット体42の回動操作に悪影響を及ぼすことを防止する。なお、この管状体41の通気管側嵌合部46の内径は通気管11の内径と同一で、吸気弁側嵌合部45の内径は管接続筒部21の厚さ寸法だけ通気管11の内径より大きく、この管状体41に通気管11、継手14および吸気弁側嵌合部45を接続した状態でそれぞれの内周面が同一の円筒面上に位置し、外気を円滑に流動する。
【００２０】
また、袋ナット体42は、図１および図２に示すように、管状体41の吸気弁側嵌合部45の外周側に回動可能に装着されており、この袋ナット体42は、塩化ビニル樹脂等にて上下面を開口した略円筒状に成形されている。
【００２１】
この袋ナット体42の上端部には、内方に向けて環状に突出したフランジ部44が形成され、このフランジ部44の内端部の内径は吸気弁12の管接続筒部21の外径より少し大きい寸法になっている。そして、この袋ナット体42の内周面には、管状体41の吸気弁側嵌合部45の外周側に位置する環状面54が形成されており、この環状面54の上端側には管状体41の支持面49と対向する押圧部としての押圧面55が傾斜状に形成されている。一方、この袋ナット体42の外周面には、図３および図４に示すように、互いに間隔をおいて複数の凹状段部56が形成されている。この各凹状段部56は、袋ナット体42の回動操作時に操作者の手からの偶力をこの袋ナット体42に円滑に伝達するもので、この各凹状段部56は、例えば手の指の大きさに合わせた矩形状に形成されている。
【００２２】
また、この袋ナット体42の中間部には、一対の案内用細長溝部61が、互いに対向して、周方向に沿った状態でこの周方向に対して略傾斜状に内周面から外周面に貫通して形成されている。この各案内用細長溝部61は、図３に示されるように、緩み側水平溝部62を有し、この緩み側水平溝部62の右端には上方に向って傾斜した傾斜溝部63が連続して形成され、この傾斜溝部63の右端には締付け側水平溝部64が連続して形成されている。なお、この締付け側水平溝部64の左端下部近傍には、袋ナット体42の回動操作によりその押圧面55でパッキング体43を押圧した時に各突起部51を保持する突起状のストッパ66が形成されている。このストッパ66は、操作者が袋ナット体42の締付け方向への回動操作の完了を確認できるように、袋ナット体42の回動操作途中において、各突起部51がこのストッパ66を通過したときにクリック感がある。
【００２３】
さらに、この袋ナット体42の下端部には、環状面54の下端側に位置して、一対の挿入用溝部67が、この袋ナット体42の軸方向に沿った状態でこの軸方向の下端面から緩み側水平溝部62の左側下部に連続して凹状に形成されている。この各挿入用溝部67は、図２に示されるように、その深さ寸法が上端では各突起部51の突起寸法より小さくかつ下端では各突起部51の突起寸法より大きい。
【００２４】
一方、パッキング体43は、図２に示すように、管状体41の支持面49と袋ナット体42の押圧面55との間に配設されており、このパッキング体43は、ＥＰＤＭ等にて比較的大きい弾性をもって、吸気弁12の管接続筒部21の外径寸法より少し大きい内径寸法で、円形の環状に形成されている。
【００２５】
そして、このパッキング体43は、袋ナット体42の回動操作により押圧面55で押圧した時には、図１に示すように、傾斜状の押圧面55にて内方に向けて弾性変形して管接続筒部21の外周面に当接し、かつ、袋ナット体42の回動操作により押圧面55による押圧を解除した時には、その弾性により外方に向けて復元して管接続筒部21の外周面より離間するようになっている。
【００２６】
次に、上記一実施の形態の作用を説明する。
【００２７】
まず、吸気弁用接続具13を組み立てる場合には、パッキング体43を袋ナット体42の内周側に配設してから、この袋ナット体42に管状体41を装着する。そして、この袋ナット体42に管状体41を装着するに当たり、一対の突起部51を一対の挿入用溝部67にこの各挿入用溝部67の下端から上端に向けてそれぞれ挿入し、この一対の挿入用溝部67を通過させて、一対の案内用細長溝部61に遊嵌させて装着する。
【００２８】
このように組み立てた吸気弁用接続具13を用いて、通気管11の上端部に継手14を介在して吸気弁12を接続する場合には、まず、通気管11の上端部外周側に継手14の下部内周側を嵌合接着し、この嵌合接着した継手14の上部内周側に管状体41の通気管側嵌合部46の下端部外周側を嵌合接着する。
【００２９】
次いで、袋ナット体42が締付け解除の状態にあることを確認してから、接続する吸気弁12の弁本体16の管接続筒部21を管状体41の吸気弁側嵌合部45の内周側に嵌合させ、袋ナット体42を図５に示す締付け方向Ｒに回動操作し、緩み側水平溝部62に位置する各突起部51を移動させて傾斜溝部63を通して締付け側水平溝部64に位置させる。なお、この際、操作者は、袋ナット体42の回動操作の完了をストッパ66の作用に基づくクリック感で確認できる。
【００３０】
そして、この袋ナット体42の回動に基づき、袋ナット体42の押圧面55にてパッキング体43が押圧され、このパッキング体43が傾斜状の押圧面55にて内方に向けて弾性変形して、このパッキング体43の内周面が弁本体16の管接続筒部21の外周面に当接し、このパッキング体43にて管接続筒部21が保持された状態となり、吸気弁12が吸気弁用接続具13および継手14を介して通気管11に接続される。
【００３１】
また、その後において、吸気弁３の不作動等に起因して、この接続した吸気弁３を交換する必要が生じた場合には、まず、管状体41に回動可能に装着した袋ナット体42を図５に示す締付け解除方向Ｌに回動操作し、締付け側水平溝部64に位置する各突起部51を移動させて傾斜溝部63を通して緩み側水平溝部62に位置させる。
【００３２】
すると、袋ナット体42の押圧面55によるパッキング体43の押圧が解除され、管状体41の支持面49にて支持されたパッキング体43が弾性により復元するため、このパッキング体43の内周面が弁本体16の管接続筒部21の外周面より離間し、このパッキング体43による管接続筒部21の保持状態が解かれる。そして、この状態で、吸気弁12を吸気弁用接続具13から取り外す。
【００３３】
次いで、交換する吸気弁12の弁本体16の管接続筒部21を管状体41の吸気弁側嵌合部45の内周側に嵌合させてから、袋ナット体42を、今度は図５に示す締付け方向Ｒに回動操作し、緩み側水平溝部62に位置する各突起部51を移動させて傾斜溝部63を通して締付け側水平溝部64に位置させる。なお、この際、操作者は、袋ナット体42の回動操作の完了をストッパ66の作用に基づくクリック感で確認できる。
【００３４】
そして、この袋ナット体42の回動に基づき、袋ナット体42の押圧面55にてパッキング体43が押圧され、このパッキング体43が傾斜状の押圧面55にて内方に向けて弾性変形して、このパッキング体43の内周面が弁本体16の管接続筒部21の外周面に当接し、このパッキング体43にて管接続筒部21が保持された状態となり、吸気弁12が吸気弁用接続具13および継手14を介して通気管11に再び接続される。
【００３５】
このようにして、上記一実施の形態によれば、吸気弁12の交換に当たり、袋ナット体42を締付け解除方向Ｌに回動操作し、パッキング体43の押圧を解除し、このパッキング体43の内周面を弁本体16の管接続筒部21の外周面より離間させ、このパッキング体43による管接続筒部21の保持状態を解いて吸気弁12を取り外し、次いで、交換する吸気弁12の管接続筒部21を管状体41の吸気弁側嵌合部45の内周側に嵌合させてから、袋ナット体42を締付け方向Ｒに回動操作し、パッキング体43を押圧し、このパッキング体43の内周面を弁本体16の管接続筒部21の外周面に当接させ、このパッキング体43にて管接続筒部21を保持して、吸気弁12を接続することによって、吸気弁12を交換するので、従来とは異なり、通気管11の端部近傍の切断作業を必要とせず、吸気弁12を簡単に交換でき、よって、例えば、通気管11の上端部が屋内の天井裏等の比較的狭い場所に配設されている場合であっても、吸気弁12を簡単にワンタッチで交換できる。
【００３６】
また、管状体41の吸気弁側嵌合部45に形成した一対の突起部51を、袋ナット体42の軸方向の中間部に形成した一対の案内用細長溝部61にて案内するため、これら各突起部51と各案内用細長溝部61とにて、袋ナット体42の回動操作を容易かつ確実にできる。
【００３７】
さらに、袋ナット体42を管状体41に装着するに当たり、一対の突起部51を一対の挿入用溝部67にこの各挿入用溝部67の下端から上端に向けてそれぞれ挿入し、この一対の挿入用溝部67を通過させて、一対の案内用細長溝部61の内部に遊嵌させることによって、袋ナット体42を装着するため、きわめて簡単に装着でき、しかも、装着後に袋ナット体42が管状体41から分離することを確実に防止でき、袋ナット体42が管状体41から分離してしまうことを防止でき、よって、例えば、袋ナット体42を紛失することを確実に防止できる。
【００３８】
また、袋ナット体42の回動操作により押圧面55でパッキング体43を押圧した時に、各突起部51を各案内用細長溝部61のストッパ66にて保持するため、袋ナット体42の締付けが緩んでしまうことを防止でき、パッキング体43による管接続筒部21の保持状態を確実に維持できる。
【００３９】
なお、上記一実施の形態においては、管状体41の通気管側嵌合部46の下端部外周側に継手14の上部内周側を嵌合接着した構成について説明したが、継手14を用いないで、例えば、通気管11の内径寸法より少し小さい外径寸法に形成した通気管側嵌合部の下端部外周側に通気管11の上端部内周側を直接嵌合接着する構成でもよく、或いは通気管11の外径寸法より少し大きい内径寸法に形成した通気管側嵌合部の下端部内周側に通気管11の上端部外周側を直接嵌合接着する構成でもよい。
【００４０】
【発明の効果】
請求項１記載の発明によれば、吸気弁の交換に際し、袋ナット体を回動操作して、パッキング体を弁本体の管接続筒部の外周面より略離間させ、吸気弁を取り外し、交換する吸気弁の管接続筒部を管状体の吸気弁側嵌合部の内周側に嵌合させてから、再び袋ナット体を回動操作して、パッキング体を弁本体の管接続筒部の外周面に当接させ、管接続筒部を保持して吸気弁を接続することによって吸気弁を交換するため、吸気弁を簡単に交換できる。また、管状体の吸気弁側嵌合部に形成した一対の突起部を、袋ナット体の軸方向の中間部に形成した一対の案内用細長溝部にて案内するため、袋ナット体の回動操作によりパッキング体の押圧、押圧の解除を容易にできる。さらに、袋ナット体を管状体に装着するに際し、一対の突起部を一対の挿入用溝部にこの各挿入用溝部の他端側から一端側に向けてそれぞれ挿入し、一対の案内用細長溝部の内部に遊嵌させて装着するので、袋ナット体に管状体を簡単に装着でき、しかも、装着後に袋ナット体が管状体から分離することを防止できる。
【００４１】
請求項２記載の発明によれば、袋ナット体の回動操作により押圧部でパッキング体を押圧した時に、各突起部を各案内用細長溝部のストッパにて保持するため、袋ナット体の締付けが緩んでしまうことを防止できる。
【図面の簡単な説明】
【図１】本発明の吸気弁用接続具の一実施の形態を示す図３のＡ−Ａ断面図である。
【図２】同上吸気弁用接続具を示す図５のＢ−Ｂ断面図である。
【図３】同上吸気弁用接続具を示す正面図である。
【図４】同上吸気弁用接続具を示す側面図である。
【図５】同上吸気弁用接続具を示す平面図である。
【図６】従来の通気管と吸気弁との接続状態を示す説明図である。
【符号の説明】
11 通気管
12 吸気弁
13 吸気弁用接続具
16 弁本体
21 管接続筒部
41 管状体
42 袋ナット体
43 パッキング体
45 吸気弁側嵌合部
46 通気管側嵌合部
49 支持面
51 突起部
54 環状面
55 押圧部としての押圧面
61 案内用細長溝部
66 ストッパ
67 挿入用溝部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an intake valve connector for connecting an intake valve to a vent pipe.
[0002]
[Prior art]
Conventionally, the connection between the vent pipe and the intake valve is made by an adhesive using, for example, a substantially cylindrical joint.
[0003]
That is, as shown in FIG. 6, the lower inner peripheral surface of the joint 2 is fitted to the outer peripheral surface of the upper end portion of the vent pipe 1 installed in a relatively narrow place such as the back of the ceiling, and is bonded with an adhesive. The outer peripheral surface of the pipe connecting cylinder portion 5 formed on the lower portion of the valve body 4 of the intake valve 3 is fitted to the upper inner peripheral surface of the intake valve 3 and bonded with an adhesive, and the intake valve 3 is attached to the upper end portion of the vent pipe 1. The pipe connection cylinder part 5 is connected.
[0004]
And when exchanging the intake valve 3 connected to the vent pipe 1 due to, for example, inactivation of the intake valve 3, the vicinity of the upper end of the vent pipe 1 is cut in a relatively narrow place such as the back of the ceiling. The intake valve 3 is removed, and then the intake valve 3 to be replaced is replaced by connecting it with an adhesive using a new substantially cylindrical joint 2 in the vicinity of the upper end of the vent pipe 1.
[0005]
[Problems to be solved by the invention]
However, in the configuration in which the connection between the vent pipe 1 and the intake valve 3 is performed by fitting and bonding using an adhesive as in the conventional case, when the intake valve 3 is replaced, the vicinity of the upper end portion of the vent pipe 1 is disposed. Since the cutting work for cutting is required, the replacement work of the intake valve 3 is complicated.
[0006]
This invention is made in view of such a point, and it aims at providing the connector for intake valves which can replace | exchange an intake valve easily.
[0007]
[Means for Solving the Problems]
請 Motomeko first intake valve connecting device described, the end portion of the vent pipe, a suction valve connector for connecting the pipe connecting cylindrical portion formed in the valve body of the intake valve, the axial end An intake valve side fitting portion that is formed on the inner peripheral side of the pipe connecting tube portion of the intake valve, a support surface formed on an end surface of the intake valve side fitting portion, and the other end in the axial direction A tubular body having a vent pipe side fitting portion formed on the side and connecting an end portion of the vent pipe, an annular surface located on an outer peripheral side of the intake valve side fitting portion of the tubular body, and the annular surface A cap nut body which is formed on one end side of the tubular body and has a pressing portion facing the support surface of the tubular body, and is rotatably mounted on the tubular body, and the support surface of the tubular body and the cap nut body The pipe connecting tube is disposed between the pipe connecting cylinder and elastically deformed when pressed by the pressing part by a turning operation of the cap nut body. A tubular packing body having elasticity that is substantially separated from the outer circumferential surface of the tube connecting tube portion when the pressing by the pressing portion is released by a rotation operation of the cap nut body. Has a pair of projecting portions formed along the radial direction at a position on the outer peripheral surface of the intake valve side fitting portion at a symmetrical position on a straight line perpendicular to the central axis of the tubular body, and the cap nut The body includes a pair of guide elongated grooves that guide the pair of protrusions and is formed at a middle portion in the axial direction so as to be substantially inclined with respect to the circumferential direction in a state along the circumferential direction. a pair of insertion grooves for inserting the other end in the axial direction along the state this from the other axial end surface of the elongate in the groove for the guide is formed continuously with the pair of projections, respectively, insertion each The depth of the groove for the projecting part In smaller dimensions Toshikatsu other end dimension is obtained by a greater dimension than the protrusion dimension of the respective protrusions.
[0008]
In this configuration, when replacing the intake valve connected to the vent pipe, first, the cap nut body rotatably attached to the tubular body is rotated, and the packing body is pressed by the pressing portion of the cap nut body. Is released, and the packing body supported by the support surface of the tubular body is elastically restored so that it is substantially separated from the outer peripheral surface of the pipe connection tube portion of the valve body, and the holding state of the tube connection tube portion by this packing body is released. Then, after removing the intake valve and fitting the pipe connection tube portion of the valve body of the intake valve to be replaced to the inner peripheral side of the intake valve side fitting portion of the tubular body, the cap nut body is rotated. The packing body is pressed and elastically deformed by the pressing portion of the cap nut body, and the elastic deformation causes the packing body to abut on the outer peripheral surface of the tube connecting tube portion, and this packing body holds the tube connecting tube portion. Connect the intake valve. Further, since the pair of protrusions formed on the intake valve side fitting portion of the tubular body is guided by the pair of guiding elongated grooves formed in the intermediate portion in the axial direction of the cap nut body, the cap nut body By the rotation operation, the packing body can be easily pressed and released. Further, when attaching the tubular body to the cap nut body, the pair of protrusions are respectively inserted into the pair of insertion groove portions from the other end side to the one end side of the insertion groove portions, Since it is loosely fitted inside and attached, the tubular body can be easily attached to the cap nut body, and the cap nut body is prevented from separating from the tubular body after the attachment.
[0009]
According to a second aspect of the present invention, there is provided the intake valve connector according to the first aspect , wherein each of the guiding elongated grooves is formed at one end side in the longitudinal direction and is operated by the pressing portion by rotating the cap nut body. It has a stopper which holds each protrusion when the packing body is pressed.
[0010]
In this configuration, when the packing body is pressed by the pressing portion by the rotation operation of the cap nut body, each protrusion is held by the stopper of each guide elongated groove, so that the cap nut body is loosened. To prevent it.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of an embodiment of an intake valve connector of the present invention will be described with reference to the drawings.
[0012]
In FIG. 1, 11 is a vent pipe, and this vent pipe 11 is formed of vinyl chloride resin or the like and guides outside air to a drain pipe system (not shown). It is arranged vertically in a narrow place.
[0013]
An intake valve 12 is vertically connected to the vent pipe 11 using an intake valve connector 13 and a joint 14.
[0014]
The intake valve 12 is opened at the time of negative pressure in the drain pipe system and sucks air. The intake valve 12 includes, for example, a valve body 16, a valve body 17, and a cover body 18.
[0015]
The valve body 16 is formed in a substantially cylindrical shape, a pipe connecting cylinder portion 21 is formed at the lower portion, a large number of connecting ribs 22 project from the upper portion, and a ventilation opening 24 is formed between the connecting ribs 22. Further, an intake valve port 25 is formed at the center of the upper surface.
[0016]
The valve body 17 is disposed above the valve body 16 so as to be movable back and forth with respect to the valve body 16, and includes a rubber sheet 31 and a seat guide 32 attached to the rubber sheet 31. . The rubber sheet 31 opens and closes the vent opening 24 of the valve body 16, and the seat guide 32 guides the rubber sheet 31 when the valve body 17 advances and retreats.
[0017]
Further, the cover body 18 is fixed to the upper outer periphery of the valve body 16, is formed in a cylindrical shape with the upper surface closed and the lower surface opened, and a seat guide 32 is slidably fitted to the inner peripheral side. Yes. The outer surface of the cover body 18 is covered with a cold protection cover 40.
[0018]
Next, the intake valve connector 13 connects, for example, the pipe connection tube portion 21 of the valve body 16 of the intake valve 12 to the upper end portion of the vent pipe 11 via the joint 14, and this intake valve connector 13 includes a tubular body 41, a cap nut body 42, and a packing body 43.
[0019]
The tubular body 41 is formed in a substantially cylindrical shape having an upper and lower surface opened with a vinyl chloride resin or the like, and at the upper part of the tubular body 41, the pipe connecting cylinder portion 21 of the intake valve 12 is arranged on the inner peripheral side. A fitted intake valve side fitting portion 45 is formed. Further, at the lower portion of the tubular body 41, a vent pipe side fitting portion 46 is provided on the intake valve side. It is formed continuously at the lower end of the fitting portion 45. The intake valve side fitting portion 45 is formed with a diameter larger than that of the vent pipe side fitting portion 46, and the inner periphery of the connecting portion between the intake valve side fitting portion 45 and the vent pipe side fitting portion 46 is formed. A locking step 47 is formed on the surface. A support surface 49 that supports the packing body 43 is formed on the upper end surface of the intake valve side fitting portion 45. Further, at a position on the outer peripheral surface of the intermediate portion of the intake valve side fitting portion 45 at a symmetrical position on a straight line perpendicular to the central axis of the intake valve side fitting portion 45, as shown in FIGS. Further, the pair of protrusions 51 are integrally formed in a columnar shape along the radial direction. Further, on the outer peripheral surface in the vicinity of the upper end portion of the vent pipe side fitting portion 46, for example, when the joint 14 is not used, an annular ridge 52 for locking the upper end portion of the vent pipe as necessary is integrally formed. The annular ridge 52 prevents the upper end of the vent pipe from adversely affecting the turning operation of the cap nut body 42. Note that the inner diameter of the vent pipe side fitting portion 46 of this tubular body 41 is the same as the inner diameter of the vent pipe 11, and the inner diameter of the intake valve side fitting portion 45 is the thickness dimension of the pipe connecting cylinder portion 21. The inner peripheral surface is larger than the inner diameter, and the inner peripheral surface is located on the same cylindrical surface in a state where the vent pipe 11, the joint 14, and the intake valve side fitting portion 45 are connected to the tubular body 41, and the outside air flows smoothly.
[0020]
Further, as shown in FIGS. 1 and 2, the cap nut body 42 is rotatably mounted on the outer peripheral side of the intake valve side fitting portion 45 of the tubular body 41. It is formed in a substantially cylindrical shape with upper and lower surfaces opened by vinyl resin or the like.
[0021]
At the upper end of this cap nut body 42 is formed a flange portion 44 projecting annularly inward, and the inner diameter of the inner end portion of this flange portion 44 is the outer diameter of the pipe connecting tube portion 21 of the intake valve 12. The dimensions are slightly larger. An annular surface 54 positioned on the outer peripheral side of the intake valve side fitting portion 45 of the tubular body 41 is formed on the inner peripheral surface of the cap nut body 42, and a tubular surface is formed on the upper end side of the annular surface 54. A pressing surface 55 as a pressing portion facing the support surface 49 of the body 41 is formed in an inclined shape. On the other hand, as shown in FIGS. 3 and 4, a plurality of concave step portions 56 are formed on the outer peripheral surface of the cap nut body 42 at intervals. Each concave step 56 smoothly transmits a couple of forces from the operator's hand to the cap nut body 42 when the cap nut body 42 is rotated. It is formed in a rectangular shape that matches the size of the finger.
[0022]
In addition, a pair of guide elongate groove portions 61 are opposed to each other in the intermediate portion of the cap nut body 42 and are substantially inclined with respect to the circumferential direction in a state along the circumferential direction from the inner circumferential surface to the outer circumferential surface. It is formed to penetrate through. As shown in FIG. 3, each elongated guide groove 61 has a slack side horizontal groove 62, and a slant groove 63 that is inclined upward is continuously formed at the right end of the slack side horizontal groove 62. The tightening side horizontal groove 64 is continuously formed at the right end of the inclined groove 63. A protruding stopper 66 is formed in the vicinity of the lower left end of the tightening side horizontal groove 64 to hold the protruding portions 51 when the packing body 43 is pressed by the pressing surface 55 by the turning operation of the cap nut body 42. Has been. Each stopper 51 passes through this stopper 66 during the turning operation of the cap nut body 42 so that the operator can confirm the completion of the turning operation of the cap nut body 42 in the tightening direction. Sometimes there is a click.
[0023]
Furthermore, a pair of insertion groove portions 67 are located on the lower end side of the cap nut body 42 at the lower end side of the annular surface 54, and extend along the axial direction of the cap nut body 42 in the axial direction. A concave shape is formed continuously from the end surface to the lower left portion of the loose horizontal groove 62. As shown in FIG. 2, each insertion groove 67 has a depth dimension smaller than the projection dimension of each projection 51 at the upper end and larger than the projection dimension of each projection 51 at the lower end.
[0024]
On the other hand, as shown in FIG. 2, the packing body 43 is disposed between the support surface 49 of the tubular body 41 and the pressing surface 55 of the cap nut body 42. The packing body 43 is made of EPDM or the like. It has a relatively large elasticity and is formed in a circular ring shape with an inner diameter dimension slightly larger than the outer diameter dimension of the pipe connecting cylinder portion 21 of the intake valve 12.
[0025]
When the packing body 43 is pressed by the pressing surface 55 by the turning operation of the cap nut body 42, the packing body 43 is elastically deformed inward by the inclined pressing surface 55 as shown in FIG. When it is in contact with the outer peripheral surface of the connecting tube portion 21 and the pressing by the pressing surface 55 is released by the turning operation of the cap nut body 42, the outer periphery of the tube connecting tube portion 21 is restored outward by its elasticity. It is designed to be separated from the surface.
[0026]
Next, the operation of the above embodiment will be described.
[0027]
First, when assembling the intake valve connector 13, the packing body 43 is disposed on the inner peripheral side of the cap nut body 42, and then the tubular body 41 is attached to the cap nut body 42. When attaching the tubular body 41 to the cap nut body 42, the pair of protrusions 51 are respectively inserted into the pair of insertion groove portions 67 from the lower end to the upper end of the insertion groove portions 67, and the pair of insertion portions It passes through the groove portion 67 and is loosely fitted to the pair of guiding elongated groove portions 61.
[0028]
When connecting the intake valve 12 via the joint 14 to the upper end of the vent pipe 11 using the intake valve connector 13 assembled in this way, first, the joint is formed on the outer peripheral side of the upper end of the vent pipe 11. The lower inner peripheral side of 14 is fitted and bonded, and the outer peripheral side of the lower end portion of the vent pipe side fitting portion 46 of the tubular body 41 is fitted and bonded to the upper inner peripheral side of the fitting 14 that has been fitted and bonded.
[0029]
Next, after confirming that the cap nut body 42 is in a tightened release state, the pipe connection tube portion 21 of the valve body 16 of the intake valve 12 to be connected is connected to the inner periphery of the intake valve side fitting portion 45 of the tubular body 41. The cap nut body 42 is rotated in the tightening direction R shown in FIG. 5 to move the projections 51 located on the loose side horizontal groove 62 to the tightening side horizontal groove 64 through the inclined groove 63. Position. At this time, the operator can confirm the completion of the turning operation of the cap nut body 42 with a click feeling based on the action of the stopper 66.
[0030]
Based on the rotation of the cap nut body 42, the packing body 43 is pressed by the pressing surface 55 of the cap nut body 42, and the packing body 43 is elastically deformed inward by the inclined pressing surface 55. Then, the inner peripheral surface of the packing body 43 comes into contact with the outer peripheral surface of the pipe connecting cylinder portion 21 of the valve body 16, and the pipe connecting cylinder portion 21 is held by the packing body 43, and the intake valve 12 It is connected to the vent pipe 11 via the intake valve connector 13 and the joint 14.
[0031]
Thereafter, when it becomes necessary to replace the connected intake valve 3 due to the malfunction of the intake valve 3 or the like, first, a cap nut body 42 rotatably attached to the tubular body 41 is firstly provided. 5 is rotated in the tightening release direction L shown in FIG. 5 to move the projections 51 located on the tightening side horizontal groove 64 and to be positioned on the loose side horizontal groove 62 through the inclined groove 63.
[0032]
Then, the pressing of the packing body 43 by the pressing surface 55 of the cap nut body 42 is released, and the packing body 43 supported by the support surface 49 of the tubular body 41 is restored by elasticity, so the inner peripheral surface of the packing body 43 Is separated from the outer peripheral surface of the tube connecting tube portion 21 of the valve body 16, and the holding state of the tube connecting tube portion 21 by the packing body 43 is released. In this state, the intake valve 12 is removed from the intake valve connector 13.
[0033]
Next, after fitting the pipe connecting tube portion 21 of the valve body 16 of the intake valve 12 to be replaced to the inner peripheral side of the intake valve side fitting portion 45 of the tubular body 41, the cap nut body 42 is now replaced with FIG. Is rotated in the tightening direction R shown in FIG. 3 to move the projections 51 positioned in the loose side horizontal groove 62 to be positioned in the tightening side horizontal groove 64 through the inclined groove 63. At this time, the operator can confirm the completion of the turning operation of the cap nut body 42 with a click feeling based on the action of the stopper 66.
[0034]
Based on the rotation of the cap nut body 42, the packing body 43 is pressed by the pressing surface 55 of the cap nut body 42, and the packing body 43 is elastically deformed inward by the inclined pressing surface 55. Then, the inner peripheral surface of the packing body 43 comes into contact with the outer peripheral surface of the pipe connecting cylinder portion 21 of the valve body 16, and the pipe connecting cylinder portion 21 is held by the packing body 43, and the intake valve 12 It is connected again to the vent pipe 11 via the intake valve connector 13 and the joint 14.
[0035]
Thus, according to the above-described embodiment, when the intake valve 12 is replaced, the cap nut body 42 is rotated in the tightening release direction L to release the pressing of the packing body 43. The inner peripheral surface is separated from the outer peripheral surface of the pipe connecting tube portion 21 of the valve body 16, the holding state of the pipe connecting tube portion 21 by the packing body 43 is released, the intake valve 12 is removed, and then the intake valve 12 to be replaced is replaced. After fitting the pipe connecting cylinder portion 21 to the inner peripheral side of the intake valve side fitting portion 45 of the tubular body 41, the cap nut body 42 is rotated in the tightening direction R, and the packing body 43 is pressed. By bringing the inner peripheral surface of the packing body 43 into contact with the outer peripheral surface of the pipe connecting cylinder portion 21 of the valve body 16, holding the pipe connecting cylinder portion 21 in this packing body 43, and connecting the intake valve 12; Since the intake valve 12 is replaced, unlike the conventional case, the cutting work near the end of the vent pipe 11 is not required. Can simply replaced, thus, for example, even when the upper end of the vent pipe 11 is disposed in a relatively narrow space such as a ceiling of the indoor it can be exchanged easily one touch intake valve 12.
[0036]
Further, in order to guide the pair of protrusions 51 formed on the intake valve side fitting portion 45 of the tubular body 41 with the pair of guiding elongated grooves 61 formed at the intermediate portion in the axial direction of the cap nut body 42, these The rotation operation of the cap nut body 42 can be easily and reliably performed by the protrusions 51 and the elongated guide grooves 61.
[0037]
Further, when attaching the cap nut body 42 to the tubular body 41, the pair of projecting portions 51 are respectively inserted into the pair of insertion groove portions 67 from the lower end to the upper end of the respective insertion groove portions 67, and this pair of insertion portions By passing the groove 67 and loosely fitting inside the pair of guide elongated grooves 61, the cap nut body 42 is mounted, so that the cap nut body 42 can be mounted very easily and after mounting, the cap nut body 42 is the tubular body 41. Can be reliably prevented, and the cap nut body 42 can be prevented from being separated from the tubular body 41. Therefore, for example, the cap nut body 42 can be reliably prevented from being lost.
[0038]
Further, when the packing body 43 is pressed by the pressing surface 55 by the rotation operation of the cap nut body 42, each protrusion 51 is held by the stopper 66 of each guide elongated groove 61, so that the cap nut body 42 is tightened. The loosening can be prevented, and the holding state of the pipe connecting cylinder portion 21 by the packing body 43 can be reliably maintained.
[0039]
In the above embodiment, the configuration in which the upper inner peripheral side of the joint 14 is fitted and bonded to the outer peripheral side of the lower end of the vent pipe side fitting portion 46 of the tubular body 41 has been described, but the joint 14 is not used. For example, the configuration may be such that the inner peripheral side of the upper end portion of the vent pipe 11 is directly fitted and bonded to the outer peripheral side of the lower end portion of the vent pipe side fitting portion formed to have an outer diameter dimension slightly smaller than the inner diameter dimension of the vent pipe 11, or A configuration in which the outer peripheral side of the upper end portion of the vent pipe 11 is directly fitted and bonded to the inner peripheral side of the lower end portion of the vent pipe side fitting portion formed to have an inner diameter dimension slightly larger than the outer diameter dimension of the vent pipe 11 may be employed.
[0040]
【The invention's effect】
According to the invention 請 Motomeko 1, wherein removal upon exchange of the intake valve, the cap nut body and the rotating operation, substantially is spaced from the outer peripheral surface of the pipe connecting tube portion of the valve body the packing body, the intake valve, After fitting the pipe connection cylinder part of the intake valve to be exchanged to the inner peripheral side of the intake valve side fitting part of the tubular body, the bag nut body is rotated again, and the packing body is connected to the pipe connection cylinder of the valve body. Since the intake valve is exchanged by contacting the outer peripheral surface of the part and holding the pipe connecting cylinder part and connecting the intake valve, the intake valve can be easily exchanged. In addition, the pair of protrusions formed on the intake valve side fitting portion of the tubular body is guided by the pair of guiding elongated grooves formed in the intermediate portion in the axial direction of the cap nut body. By the operation, the packing body can be easily pressed and released. Further, when attaching the cap nut body to the tubular body, the pair of protrusions are inserted into the pair of insertion groove portions from the other end side to the one end side of the respective insertion groove portions, Since it is loosely fitted inside and attached, the tubular body can be easily attached to the cap nut body, and the cap nut body can be prevented from separating from the tubular body after the attachment.
[0041]
According to the second aspect of the present invention, when the packing body is pressed by the pressing portion by the rotation operation of the cap nut body, each protrusion is held by the stopper of each guide elongated groove portion. Can be prevented from loosening.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view taken along line AA of FIG. 3 showing an embodiment of an intake valve connector according to the present invention.
FIG. 2 is a cross-sectional view taken along the line BB of FIG. 5 showing the intake valve connector.
FIG. 3 is a front view showing the intake valve connector.
FIG. 4 is a side view showing the intake valve connector.
FIG. 5 is a plan view showing the intake valve connector.
FIG. 6 is an explanatory view showing a connection state between a conventional vent pipe and an intake valve.
[Explanation of symbols]
11 Vent pipe
12 Intake valve
13 Inlet valve connector
16 Valve body
21 Pipe connection cylinder
41 Tubular body
42 Cap nut body
43 Packing body
45 Inlet valve side fitting
46 Vent pipe side fitting part
49 Support surface
51 Protrusion
54 Annular surface
55 Press surface as pressing part
61 Slot for guide
66 Stopper
67 Insertion groove

Claims

An intake valve connector for connecting a pipe connecting tube portion formed on a valve body of an intake valve to an end portion of a vent pipe,
An intake valve side fitting portion formed on one end side in the axial direction and fitting the pipe connecting tube portion of the intake valve on the inner peripheral side, a support surface formed on an end surface of the intake valve side fitting portion, and A tubular body formed on the other end side in the axial direction and having a vent pipe side fitting portion connecting the end portions of the vent pipe;
The tubular body has an annular surface located on the outer peripheral side of the intake valve side fitting portion of the tubular body, and a pressing portion that is formed on one end side of the annular surface and faces the support surface of the tubular body. A cap nut body rotatably mounted on the
It is disposed between the support surface of the tubular body and the pressing portion of the cap nut body, and is elastically deformed when pressed by the pressing portion by a rotation operation of the cap nut body, and An elastic packing body that comes into contact with the outer peripheral surface and is substantially separated from the outer peripheral surface of the tube connecting tube portion when the pressing by the pressing portion is released by the rotation operation of the cap nut body;
The tubular body has a pair of protrusions formed along the radial direction at symmetrical positions on a straight line perpendicular to the central axis of the tubular body at a position on the outer peripheral surface of the intake valve side fitting portion,
The cap nut body includes a pair of guiding elongated grooves that guide the pair of protrusions and are formed substantially inclined with respect to the circumferential direction in a state along the circumferential direction in an intermediate portion in the axial direction. a pair of insertion grooves for inserting each of the other end from the other end face of the shaft direction in a state along the axial direction are formed continuously in an elongated groove for the guiding of the pair projecting portion of the annular surface,
Depth of each insertion groove, air intake above a smaller dimension Toshikatsu other end protruding dimension of the protrusions you characterized in that the larger dimension than the protrusion dimension of the respective protrusions at one end Valve connector.

Each guiding elongated groove, according to claim 1, characterized in that it has a stopper for holding each protrusion when pressing packing member by the pressing portion by the rotational operation of the one longitudinal end to the formed cap nut body Inlet valve connector.