JP4269098B2

JP4269098B2 - Connection system, male member and plug member for connection system

Info

Publication number: JP4269098B2
Application number: JP2002256687A
Authority: JP
Inventors: 祐嗣新田
Original assignee: Showa Marutsutsu Co Ltd
Current assignee: Showa Marutsutsu Co Ltd
Priority date: 2002-09-02
Filing date: 2002-09-02
Publication date: 2009-05-27
Anticipated expiration: 2022-09-02
Also published as: JP2004091013A

Description

【０００１】
【発明の属する技術分野】
本発明は、たとえばパーマ用薬品、液体石鹸、シャンプー等の化学品、医薬品、飲料水等の液状体又は粉体が充填される容器に用いられる連結システム、連結システム用雄部材および閉栓部材に関する。
【０００２】
【従来の技術】
従来、液状体や粉体が充填される容器に用いられる連結システムとしては、例えば、図１０に示す、特表２００１−５１１４９３号に記載されているような連結システムがある。即ち、上下方向に貫通した横断面円形導通路２１１を有しかつ容器の開口内に固定される雌部材２０１と、雌部材２０１に連結されかつ雌部材２０１の上端部に着脱自在に係合して導通路２１１の上端開口を閉鎖しうるプラグ２０２と、プラグ２０２に係合する頭部２３１および頭部２３１の下方に連なる横断面環状の棒状部２３２を有しかつ雌部材２０１の導通路内に下方から抜き差し自在に差し込まれる雄部材２０３とを備えており、雄部材２０３の棒状部２３２に、その下端から上端部に至る流体通路２３３の周囲の部分に、雄部材２０３が上端位置に達した際に雌部材２０１の上端よりも上方に位置しかつ流体通路２３３を外部に通じさせる貫通孔２３４が形成されており、雄部材２０３を雌部材２０１の導通路２１１内に挿入して上昇させることにより、その頭部２３１がプラグ２０２に係合するとともにプラグ２０２が雌部材２０１の上端部から外れ、かつ貫通孔２３４の少なくとも一部が雌部材２０１上端よりも上方に位置し、雄部材２０３を下降させることにより、頭部２３１と係合しているプラグ２０２が下降させられるとともに雌部材２０１の上端部に係合させられ流体通路２３３の上端開口が閉鎖され、かつ雄部材２０３の頭部２３１がプラグから外れるようになされているものが提案されている。
【０００３】
この連結システムでは、プラグ２０２と雄部材２０３の係合は、プラグ２０２内周面と雄部材２０３の頭部２３１で行う構造である。そのため、係合部であるプラグ２０２内周面と雄部材２０３の頭部２３１の寸法精度が要求される。しかしながら、プラグ２０２内周面は射出成形法により製造される際、中子が導通路２１１下側に抜かれるため、金型がアンダーカットとなり、中子を無理抜きする必要があり、係合力にばらつきが生じさせないように高い寸法精度を得るには、金型と成形技術に高い精度が求められ、製造コストが上昇するという問題がある。
【０００４】
【発明が解決しようとする課題】
本発明は上記の課題を解決するためになされたものであり、雄部材を雌部材に抜き差しするときに、プラグと雄部材との間で安定した係合力をもつ連結システム、連結システム用雄部材及び閉栓部材を提供することを目的とする。
【０００５】
【課題を解決するための手段】
第１の課題解決手段に係る発明は、軸方向に貫通した導通路を有しかつ容器の開口内に固定される雌部材と、雌部材の上端部に着脱自在に係合して導通路の上端開口部を閉鎖しうるプラグと、プラグの外周を挟持する挟持部および挟持部の下方に連なる棒状部を有しかつ雌部材の導通路内に下方から抜き差し自在に差込まれる雄部材とを備えており、雄部材の棒状部に、その下端から上端部に至る流体通路が形成され、雄部材を雌部材の導通路内に挿入して上昇させることにより、挟持部がプラグを挟持するとともにプラグが雌部材の上端部から外れ、かつ流体通路の上端開口の少なくとも一部が雌部材上端よりも上方に位置し、雄部材を下降させることにより、挟持部と挟持しているプラグが下降させられるとともに雌部材の上端部に係合させられて導通路の上端開口が閉鎖され、かつ雄部材の挟持部がプラグから外れるようになされている連結システムを提供する。
【０００６】
第２の課題解決手段に係る発明は、第1の課題解決手段において、雄部材の棒状部の上端の挟持部が周方向に等間隔に複数個配置されている突起からなる連結システムを提供する。
【０００７】
第３の課題解決手段に係る発明は、第２の課題解決手段において、プラグが挟持部に挟持される環状凹溝を有し、突起が雄部材の棒状部の上端周方向に等間隔に４個配置されていることを特徴とする連結システムを提供する。
【０００８】
第４の課題解決手段に係る発明は、第１〜３の課題解決手段のいずれかにおいて、挟持部が雄部材を上昇及び下降させる際、雌部材の導通路内壁に接触することを特徴とする連結システムを提供する。
【０００９】
第５の課題解決手段に係る発明は、第４の課題解決手段のいずれかにおいて雌部材の導通路内壁にプラグを係止する内方突出部を備え、プラグが雌部材の開口部を閉鎖しているとき、プラグの挟持部の環状凹溝が内方突出部より下方に配置されている連結システムを提供する。
【００１０】
第６の課題解決手段に係る発明は、雌部材とプラグと雄部材とからなる連結システムにおいて、軸方向に貫通した導通路を有しかつ容器の開口内に固定される雌部材及び、雌部材の上端部に着脱自在に係合して導通路の上端開口を閉鎖しうるプラグに対し、プラグの外周を挟持する挟持部および挟持部の下方に連なる棒状部を有しかつ雌部材の導通路内に下方から抜き差し自在に差込まれる連結システム用雄部材であって、雄部材の棒状部に、その下端から上端部に至る流体通路が形成され、さらに棒状部の上端部の流体通路の周囲部分に、雄部材を雌部材の導通路内に挿入して上昇させることにより、その挟持部がプラグを挟持するとともにプラグが雌部材の上端部から外れ、かつ流体通路の上端開口がプラグ及び雌部材により閉鎖されない場所に位置し、雄部材を下降させることにより、挟持部に挟持されているプラグが下降させられるとともに雌部材の上端部に係合させられて導通路の上端開口が閉鎖され、さらに雄部材の挟持部がプラグから外れるようになされている連結システム用雄部材を提供する。
【００１１】
第７の課題解決手段に係る発明は、軸方向に貫通した導通路を有しかつ容器の開口内に固定される雌部材と、雌部材と一体的に形成され、雌部材の上端部に着脱自在に係合して導通路の上端開口を閉鎖しうるプラグとを備え、プラグはプラグが雌部材と係合したときに雌部材の導通路内に位置する被挟持部を有し、プラグが被挟持部を挟持されて雌部材の上端部から外され、被挟持部を挟持されてプラグが下降させられるとともに雌部材の上端部に係合させられて導通路の上端開口が閉鎖され、さらにプラグの被挟持部が放されるようになされている閉栓部材を提供する。
【００１２】
【発明の実施の形態】
以下、図面に基づき、この発明に係る一実施の形態について説明する。図１の（A）は本願発明の一実施の形態で用いられる連結システムの雌部材の正面図であり、図１の（B）は同連結システムの雄部材の正面図である。図2の（A）は図１の連結システムの雌部材の縦断面図であり、図２の（B）は同連結システムの雄部材の縦断面図である。図３は図1の連結システムの雌部材の側面図であり、図4は同連結システムの雌部材の平面図である。図５は図１の連結システムの雄部材の平面図である。
【００１３】
この発明の一実施の形態で用いられる連結システムは、3つの構成要素からなる。雌部材１とこれと連結しうる雄部材３と、雌部材1を閉鎖するプラグ２である。雌部材1とプラグ２は、雄部材３との連結部材としてだけでなく、雌部材1とプラグ２のみでクロージャー（閉栓部材）としての役割も果たす。雌部材1とプラグ２は、射出成形などの適切な成形により一体のプラスチック部材として製造される。雄部材３もプラスチックの射出成形製品として製造される。プラスチックとしては、熱可塑性プラスチック、例えば、ポリエチレン、ポリプロピレンなど可撓性を有するものが適している。
【００１４】
雌部材１は、例えば液状体が充填される袋１０１（図１の（A）参照）の開口内に固定され、かつ上下方向に貫通した導通路１１を有する。プラグ２は雌部材1に2本の可撓性連結部材２１を介して連結されかつ雌部材1の上端部に上方から着脱自在に係合して導通路１１の開口部１６を閉鎖しうる。雄部材３はプラグ２を挟持する挟持部３１および挟持部３１の下方に連なる横断面環状の棒状部３３を有しかつ雌部材1の導通路１１内に下方から抜き差し自在に差し込まれる。
【００１５】
雌部材1は、液状体用袋１０１に融着や接着等の適宜固定手段で固定される２つの側面を形成するための舟形の基部１２、基部１２の下方に接する外向きフランジ１３、上方には導通路１１の環状壁部１４からなり、一体形成される。環状壁部１４の内周面には環状内方突出部１５が全周にわたって形成されている。環状内方突出部１５の上方には、上方に行くほど内径が大きくなる開口部１６が形成されている。導通路１１の環状内方突出部１５の下方には雄部材３を上昇させた際に雄部材３のOリング３７が嵌る環状凹溝１８が形成されている。各基部１２には複数のリブ１７が一体に成形されている。外向きフランジ１３は外向きフランジ１３の基部１２側の面まで液状体用袋１０１を差し込み固定させるためのものである。
【００１６】
プラグ２は雌部材１の基部１２の上面両端から突出する２本の可撓性連結部材２１を介して雌部材１と一体に形成されている。プラグ２外周上方には雌部材１の開口部１６と嵌合することによって開口部１６を閉じる主嵌合部２２が設けられている。即ち、プラグ２外周上方が主嵌合部２２、雌部材１の開口部１６が主受容部となっている。この主嵌合部２２は、雌部材１の環状内方突出部１５と掛止めする環状突出部２３が全周にわたり形成され、その上方に環状凹溝２４、さらに上方に開口部１６内面との間を封止する環状突出部２５が液密状に嵌り合うように形成されている。さらに上方に下面が雌部材１の環状壁部１４の上面に液密状に接する停止面２６が形成されている。
【００１７】
プラグ２外周の主嵌合部２２下方には、雄部材３の挟持部３１に挟持される被挟持部２９が設けられている。この被挟持部２９は、全周にわたる環状凹溝２７と挟持部３１を環状凹溝２７に導くため下方に行くほど、外径が小さくなっている傾斜部２８から形成されている。
【００１８】
雄部材３の上端部には雌部材１の被挟持部２９を挟持するための挟持部３１が円周方向に９０度間隔に４個設けられている。挟持部３１の先端にはプラグ２を挟持するため内向きにリブ３２が設けられている。リブ３２の内面には横断面円形のプラグ２を確実に挟持できるように被挟持部２９の傾斜部２８に沿う円弧状のガイド面３４が設けられている。挟持部３１のリブ３２が被挟持部２９の環状凹溝２７を挟持し、プラグ２と雄部材３が連結される。挟持部３１の外周面は小径部３６より外側に張り出しており、詳しくは雌部材１の開口部１６の内径より外側に張り出している。
【００１９】
雄部材３の挟持部３１と接する棒状部３３にはその下端から上端に至る流体通路３５が形成されている。棒状部３３は上端より所定の長さにわたり小径部３６が設けられている。小径部３６を除いた棒状部３３の上端にOリング３７を取り付けることができるように環状凹溝３８が全周にわたり設けられている。このOリング３７は必ずしも必要ではないが、このOリング３７により雌部材１の流体通路３５と雄部材３の棒状部３３外周面との間が完全にシールされる。
【００２０】
図６、図７はこの発明の一実施の形態で用いられる連結システムの動作について説明するものである。図６はプラグが導通路の雌部材上端開口から離脱し、雄部材によって挟持されている状態の図１の連結システムの断面図である。図７はプラグが流体通路の上端開口を閉鎖した状態の図1の連結システムの断面図である。雌部材１の流体通路３５内に下方から雄部材３を挿入して上昇させる場合、雄部材３の挟持部３１がプラグ２の傾斜部２８に接し、外側にたわみながら、環状凹溝２７に導かれ、被挟持部２９と雄部材３の挟持部３１が係合した後、プラグ２と雌部材１が外れるようになっている。挟持部３１が開口部１６を通過する際、挟持部３１の外側が雌部材２の導通路１１の内壁に接触するため、内側に押さえられ、プラグ２をより強く挟持することができる。図６の状態は開状態であるため液状体はプラグ２と挟持部３１の間から流体通路３５を通り排出される。
【００２１】
逆に、図６の状態から雄部材３を下降させる場合、プラグ２の被挟持部２９と雄部材３の挟持部３１が係合されたまま下降させられ、主嵌合部２２が雌部材1の開口部１６に係合した後、雄部材３の挟持部３１がプラグ２被挟持部２９から外れるようになっている。
【００２２】
より詳しくは雌部材１の流体通路３５内に下方から雄部材３を挿入して上昇させる際、プラグ２の被挟持部２９と雄部材３の挟持部３１の挟持強度がプラグ２の主嵌合部２２と雌部材１の開口部１６の係合から解放する力より小さく設計されている。逆に、雄部材３を下降させる際、プラグ２の被挟持部２９と雄部材３の挟持部３１の挟持強度がプラグ２主嵌合部２２と雌部材１の開口部１６の係合させるのに要する力より大きく設計されている。
【００２３】
さらに詳しくはプラグ２が雌部材1の開口部１６を閉鎖した状態において、プラグ２の被挟持部２９が導通路１１内上部の環状内方突出部１５よりも下方に配置されるように設計されている。
【００２４】
雄部材３はガイド面３４まで挿入した中子を流体通路３５の下方より抜くことによって、挟持部３１のアンダーカットを防ぐことが可能である。そのため、係合部となるプラグ２外周面、雌部材１の開口部１６、雄部材３の挟持部３１について高い寸法精度を出すことができる。このようにわずかな強度差を利用した構造においても、寸法の誤差を小さくして設計通りの係合強度を得ることができる。
【００２５】
一例では雄部材３の挟持部３１が４個で挟持するタイプを示したが、周方向に等間隔で数個形成されたもの、例えば、１２０度間隔で３個の挟持部３１により挟持するタイプも、本発明の挟持部３１に勿論属する。
【００２６】
図８は本発明の他の実施の形態に係る連結システムの雄部材の一部破断正面図である。挟持部３１は上部からのスリット４１によって周方向に等間隔に分割されている。好ましくは９０度等間隔に４分割されている。スリット４１の付根には流体通路３５を外部に通じさせる貫通孔４２が設けられている。互いに隣り合う挟持部３１の間隔が狭いため、挟持部３１同士が互いに支えあうことにより捩れや横方向への倒れが防止される。よって、雄部材３を雌部材１の導通路１１内に挿入し、プラグ２と連結させながら上昇および下降させる際のプラグ２と雄部材３の外れを防止できる。雄部材３を雌部材１の導通路１１内に挿入し上昇させて、開状態とさせた時、貫通孔４２の少なくとも一部が雌部材１の環状壁１４の上端開口よりも上方に位置しており、液状体は貫通孔４２から流体通路３５を通り排出される。
【００２７】
図９は本発明のさらに他の実施の形態に係る連結システムの雌部材の正面図である。プラグ２の上部には円盤状の外向突出部６１が形成されている。外方突出部６１の外周面には雌部材１の環状壁部１４を挟持する挟持部６２が円周方向に１８０度間隔に２個設けられている。挟持部６２の先端の内側にリブ６３が設けられている。外方突出部６１の下面には環状壁部１４の上面と液密状に接する停止面６４が設けられている。雌部材１の環状壁部１４には挟持部６２のリブ６３が挟持する環状凹溝５１が形成されている。環状凹溝５１にリブ６３が嵌ることにより雌部材１とプラグ２が連結され、且つ停止面６３と環状壁部１４の上面が液密状に接する。
【００２８】
【発明の効果】
本願の第１の発明は、雄部材にプラグの外周を挟持する挟持部を設けることにより、容器の開口部の開閉を比較的簡単な構造で、容易に且つ確実に行うことができる連結システムを提供する。
【００２９】
本願の第２の発明は、雄部材の挟持部が周方向に等間隔に複数個配置されている突起からなるため、各挟持部がプラグを安定して挟持することができる連結システムを提供する。
【００３０】
本願の第３の発明は、プラグが挟持部に挟持される環状凹溝を有し、突起が雄部材の棒状部の上端周方向に等間隔に４個配置されているため、金型を比較的簡単な構造にできる連結システムを提供する。
【００３１】
本願の第４の発明は、挟持部が雄部材を上昇及び下降させる際、雌部材の導通路内壁に接することにより、内側に押さえられ、プラグをより強く挟持することができる連結システムを提供する。
【００３２】
本願の第５の発明は、雌部材の導通路内壁にプラグを係止する内方突出部を備え、プラグが雌部材の開口部を閉鎖しているとき、プラグ挟持部の環状凹溝が内方突出部より下方に配置されているため、雄部材を上昇させる際は、プラグの被挟持部と雄部材の挟持部の挟持強度がプラグの主嵌合部と雌部材の開口部の係合から解放する力より小さく、逆に、雄部材を下降させる際、プラグの被挟持部と雄部材の挟持部の挟持強度がプラグ主嵌合部と雌部材の開口部の係合させるのに要する力より大きくなる連結システムを提供する。
【００３３】
本願の第６の発明は、雄部材にプラグの外周を挟持する挟持部を設けることにより、容器の開口部の開閉を比較的簡単な構造で、容易に且つ確実に行うことができる連結システム用雄部材を提供する。
【００３４】
本願の第７の発明は、プラグの外周に被挟持部を設けることにより、容器の閉栓を比較的簡単な構造で、容易に且つ確実に行うことができる閉栓部材を提供する。
【図面の簡単な説明】
【図１】（A）は本願発明の一実施の形態で用いられる連結システムの雌部材の正面図であり、（B）は連結システムの雄部材の正面図である。
【図２】（A）は連結システムの雌部材の縦断面図であり、（B）は連結システムの雄部材の縦断面図である。
【図３】連結システムの雌部材の側面図である。
【図４】連結システムの雌部材の平面図である。
【図５】連結システムの雄部材の平面図である。
【図６】プラグが導通路の雌部材上端開口から離脱し、雄部材によって挟持されている状態の連結システムの断面図である。
【図７】プラグが流体通路の上端開口を閉鎖した状態の連結システムの断面図である。
【図８】本発明の他の実施の形態に係る連結システムの雄部材の一部破断正面図である。
【図９】本発明のさらに他の実施の形態に係る連結システムの雌部材の正面図である。
【図１０】（A）は従来から存在する連結システムの雌部材の縦断面図であり、（B）は連結システムの雄部材の正面図である。
【符号の説明】
１雌部材
２プラグ
３雄部材
１１導通路
２９被挟持部
３１挟持部
３５流体通路
１０１液状体袋[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection system, a male member for a connection system, and a closure member used for a container filled with a liquid or powder such as chemicals for permanents, chemicals such as liquid soap and shampoo, pharmaceuticals, and drinking water.
[0002]
[Prior art]
Conventionally, as a connection system used for a container filled with a liquid or powder, for example, there is a connection system as described in JP-T-2001-511493 shown in FIG. That is, a female member 201 having a circular conduction path 211 having a transverse cross section penetrating in the vertical direction and fixed in the opening of the container, and connected to the female member 201 and detachably engaged with the upper end portion of the female member 201. A plug 202 that can close the upper end opening of the conduction path 211, a head 231 that engages with the plug 202, and a rod-like portion 232 having an annular cross section that continues to the lower side of the head 231, and in the conduction path of the female member 201. The male member 203 is inserted into the rod-shaped portion 232 of the male member 203 so that the male member 203 reaches the upper end position in the periphery of the fluid passage 233 extending from the lower end to the upper end portion. In this case, a through hole 234 is formed that is located above the upper end of the female member 201 and allows the fluid passage 233 to communicate with the outside, and the male member 203 is inserted into the conduction path 211 of the female member 201. By raising, the head 231 engages with the plug 202, the plug 202 is disengaged from the upper end of the female member 201, and at least a part of the through hole 234 is positioned above the upper end of the female member 201. By lowering the member 203, the plug 202 engaged with the head 231 is lowered and engaged with the upper end of the female member 201, the upper end opening of the fluid passage 233 is closed, and the male member 203 There has been proposed one in which the head 231 is detached from the plug.
[0003]
In this connection system, the engagement between the plug 202 and the male member 203 is performed by the inner peripheral surface of the plug 202 and the head 231 of the male member 203. Therefore, the dimensional accuracy of the inner peripheral surface of the plug 202 that is the engaging portion and the head portion 231 of the male member 203 is required. However, when the inner peripheral surface of the plug 202 is manufactured by an injection molding method, since the core is pulled out below the conduction path 211, the mold is undercut, and it is necessary to force the core to be pulled out. In order to obtain high dimensional accuracy so as not to cause variations, there is a problem that high accuracy is required for the mold and the molding technique, and the manufacturing cost increases.
[0004]
[Problems to be solved by the invention]
The present invention has been made to solve the above-described problems, and a connection system having a stable engagement force between the plug and the male member when the male member is inserted into and removed from the female member, and the male member for the connection system And it aims at providing a closure member.
[0005]
[Means for Solving the Problems]
The invention according to the first problem-solving means includes a female member having a conductive path penetrating in the axial direction and fixed in the opening of the container, and detachably engaged with an upper end portion of the female member. A plug capable of closing the upper end opening, and a male member that has a sandwiching part that sandwiches the outer periphery of the plug and a rod-like part that continues to the lower part of the sandwiching part, and that is inserted into the conduction path of the female member so as to be freely inserted and removed from below. A fluid passage extending from the lower end to the upper end of the male member is formed in the rod-shaped portion of the male member, and the male member is inserted into the conduction path of the female member and raised so that the holding portion holds the plug. The plug is detached from the upper end of the female member, and at least a part of the upper end opening of the fluid passage is positioned above the upper end of the female member, and the male member is lowered, thereby lowering the plug sandwiched with the holding portion. Engaged with the upper end of the female member Sera is in the upper end opening of the conductive paths are closed, and clamping of the male member to provide a coupling system that is adapted to disengage from the plug.
[0006]
The invention according to the second problem solving means provides a connection system comprising a plurality of protrusions in which a plurality of holding portions at the upper end of the rod-like portion of the male member are arranged at equal intervals in the first problem solving means. .
[0007]
The invention according to the third problem-solving means is the second problem-solving means, in which the plug has an annular groove that is held by the holding portion, and the protrusions are arranged at equal intervals in the circumferential direction at the upper end of the rod-like portion of the male member. Provided is a connection system characterized by being arranged individually.
[0008]
The invention according to the fourth problem solving means is characterized in that, in any one of the first to third problem solving means, when the holding part raises and lowers the male member, it contacts the inner wall of the conductive path of the female member. Provide a linkage system.
[0009]
An invention according to a fifth problem solving means includes an inward protruding portion for locking the plug on the inner wall of the conductive path of the female member in any of the fourth problem solving means, wherein the plug closes the opening of the female member. A connecting system is provided in which the annular groove in the clamping part of the plug is arranged below the inward projecting part.
[0010]
The invention according to the sixth problem solving means is a connection system comprising a female member, a plug, and a male member, and has a female member that has a conduction path that penetrates in the axial direction and is fixed within the opening of the container, and the female member A plug that can be detachably engaged with the upper end of the plug to close the upper end opening of the conductive path has a clamping part that clamps the outer periphery of the plug, and a bar-shaped part that continues below the clamping part, and the conductive path of the female member A male member for a connection system that is inserted into the socket from the lower side so that a fluid passage from the lower end to the upper end is formed in the rod-shaped portion of the male member, and the fluid passage at the upper end of the rod-shaped portion When the male member is inserted into the conduction path of the female member and raised at the portion, the holding portion holds the plug, the plug is detached from the upper end portion of the female member, and the upper end opening of the fluid passage is the plug and female portion. Not closed by a member By lowering the male member located at the place, the plug held by the holding part is lowered and engaged with the upper end of the female member to close the upper end opening of the conduction path. Provided is a male member for a connection system in which a clamping part is detached from a plug.
[0011]
The invention according to the seventh means for solving the problems is a female member having a conduction path extending in the axial direction and fixed in the opening of the container, and formed integrally with the female member, and is attached to and detached from the upper end of the female member A plug that can be freely engaged to close the upper end opening of the conduction path, and the plug has a sandwiched portion that is located in the conduction path of the female member when the plug is engaged with the female member. The sandwiched portion is sandwiched and removed from the upper end portion of the female member, the sandwiched portion is sandwiched and the plug is lowered and engaged with the upper end portion of the female member to close the upper end opening of the conduction path, and A plug-closing member is provided in which a pinched portion of a plug is released.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. 1A is a front view of a female member of a connection system used in an embodiment of the present invention, and FIG. 1B is a front view of a male member of the connection system. 2A is a longitudinal sectional view of a female member of the connection system of FIG. 1, and FIG. 2B is a longitudinal sectional view of a male member of the connection system. 3 is a side view of the female member of the connection system of FIG. 1, and FIG. 4 is a plan view of the female member of the connection system. FIG. 5 is a plan view of a male member of the connection system of FIG.
[0013]
The connection system used in one embodiment of the present invention is composed of three components. A female member 1, a male member 3 that can be connected to the female member 1, and a plug 2 that closes the female member 1. The female member 1 and the plug 2 serve not only as a connecting member with the male member 3 but also as a closure (capping member) only with the female member 1 and the plug 2. The female member 1 and the plug 2 are manufactured as an integral plastic member by appropriate molding such as injection molding. The male member 3 is also manufactured as a plastic injection molded product. As the plastic, a thermoplastic plastic such as polyethylene or polypropylene having flexibility is suitable.
[0014]
The female member 1 has a conduction path 11 that is fixed in an opening of a bag 101 (see FIG. 1A) filled with a liquid material and penetrates in a vertical direction, for example. The plug 2 can be connected to the female member 1 via two flexible connecting members 21 and can be detachably engaged with the upper end of the female member 1 from above to close the opening 16 of the conduction path 11. The male member 3 has a sandwiching portion 31 for sandwiching the plug 2 and a rod-shaped portion 33 having an annular cross section continuous to the lower portion of the sandwiching portion 31 and is detachably inserted into the conduction path 11 of the female member 1 from below.
[0015]
The female member 1 includes a boat-shaped base 12 for forming two side surfaces fixed to the liquid bag 101 by appropriate fixing means such as fusion or adhesion, an outward flange 13 in contact with the lower side of the base 12, and an upper side. Consists of an annular wall portion 14 of the conduction path 11 and is integrally formed. An annular inward protruding portion 15 is formed on the inner peripheral surface of the annular wall portion 14 over the entire circumference. An opening 16 is formed above the annular inward projecting portion 15 so that the inner diameter increases toward the top. An annular groove 18 into which the O-ring 37 of the male member 3 is fitted when the male member 3 is raised is formed below the annular inward projecting portion 15 of the conduction path 11. A plurality of ribs 17 are integrally formed on each base portion 12. The outward flange 13 is for inserting and fixing the liquid material bag 101 up to the base 12 side surface of the outward flange 13.
[0016]
The plug 2 is formed integrally with the female member 1 via two flexible connecting members 21 protruding from both ends of the upper surface of the base 12 of the female member 1. A main fitting portion 22 that closes the opening 16 by fitting with the opening 16 of the female member 1 is provided above the outer periphery of the plug 2. That is, the upper periphery of the plug 2 is the main fitting portion 22 and the opening 16 of the female member 1 is the main receiving portion. The main fitting portion 22 is formed with an annular protrusion 23 that engages with the annular inward protrusion 15 of the female member 1 over the entire circumference, an annular groove 24 above it, and an inner surface of the opening 16 above. An annular protrusion 25 that seals the gap is formed so as to fit in a liquid-tight manner. Further, a stop surface 26 whose lower surface is in liquid-tight contact with the upper surface of the annular wall portion 14 of the female member 1 is formed above.
[0017]
Below the main fitting portion 22 on the outer periphery of the plug 2, a sandwiched portion 29 that is sandwiched by the sandwiching portion 31 of the male member 3 is provided. The pinched portion 29 is formed of an inclined portion 28 whose outer diameter decreases toward the lower side in order to guide the annular groove 27 and the pinched portion 31 over the entire circumference to the annular groove 27.
[0018]
At the upper end of the male member 3, four clamping portions 31 for clamping the clamped portion 29 of the female member 1 are provided at intervals of 90 degrees in the circumferential direction. A rib 32 is provided at the front end of the sandwiching portion 31 inward to sandwich the plug 2. An arcuate guide surface 34 along the inclined portion 28 of the sandwiched portion 29 is provided on the inner surface of the rib 32 so that the plug 2 having a circular cross section can be securely sandwiched. The rib 32 of the clamping part 31 clamps the annular groove 27 of the clamped part 29, and the plug 2 and the male member 3 are connected. The outer peripheral surface of the sandwiching portion 31 projects outward from the small diameter portion 36, and more specifically, projects outward from the inner diameter of the opening 16 of the female member 1.
[0019]
A fluid passage 35 extending from the lower end to the upper end is formed in the rod-like portion 33 in contact with the clamping portion 31 of the male member 3. The rod-shaped portion 33 is provided with a small diameter portion 36 over a predetermined length from the upper end. An annular groove 38 is provided over the entire circumference so that an O-ring 37 can be attached to the upper end of the rod-like portion 33 excluding the small-diameter portion 36. The O-ring 37 is not always necessary, but the O-ring 37 completely seals between the fluid passage 35 of the female member 1 and the outer peripheral surface of the rod-shaped portion 33 of the male member 3.
[0020]
6 and 7 illustrate the operation of the connection system used in one embodiment of the present invention. FIG. 6 is a cross-sectional view of the connection system of FIG. 1 in a state where the plug is detached from the upper end opening of the female member of the conduction path and is sandwiched by the male member. FIG. 7 is a cross-sectional view of the connection system of FIG. 1 with the plug closing the top opening of the fluid passage. When the male member 3 is inserted and raised from below into the fluid passage 35 of the female member 1, the clamping portion 31 of the male member 3 is in contact with the inclined portion 28 of the plug 2 and is guided to the annular groove 27 while being bent outward. In addition, the plug 2 and the female member 1 are detached after the clamped portion 29 and the clamping portion 31 of the male member 3 are engaged. When the clamping part 31 passes the opening part 16, since the outer side of the clamping part 31 contacts the inner wall of the conduction path 11 of the female member 2, it is pressed inside and the plug 2 can be clamped more strongly. Since the state of FIG. 6 is an open state, the liquid material is discharged from between the plug 2 and the sandwiching portion 31 through the fluid passage 35.
[0021]
Conversely, when the male member 3 is lowered from the state of FIG. 6, the plug 2 is lowered while the clamped portion 29 of the plug 2 and the clamped portion 31 of the male member 3 are engaged, and the main fitting portion 22 is moved to the female member 1. After the engagement with the opening 16, the clamping portion 31 of the male member 3 is disengaged from the plug 2 clamping portion 29.
[0022]
More specifically, when the male member 3 is inserted and raised from below into the fluid passage 35 of the female member 1, the clamping strength between the sandwiched portion 29 of the plug 2 and the sandwiching portion 31 of the male member 3 is the main fitting of the plug 2. It is designed to be smaller than the force for releasing the engagement between the portion 22 and the opening 16 of the female member 1. Conversely, when the male member 3 is lowered, the clamping strength of the clamped portion 29 of the plug 2 and the clamped portion 31 of the male member 3 causes the plug 2 main fitting portion 22 and the opening 16 of the female member 1 to engage with each other. It is designed to be larger than the force required.
[0023]
More specifically, when the plug 2 closes the opening 16 of the female member 1, the sandwiched portion 29 of the plug 2 is designed to be disposed below the annular inward protruding portion 15 in the upper portion of the conduction path 11. ing.
[0024]
The male member 3 can prevent the undercut of the clamping portion 31 by removing the core inserted up to the guide surface 34 from below the fluid passage 35. Therefore, high dimensional accuracy can be achieved for the outer peripheral surface of the plug 2 serving as the engaging portion, the opening 16 of the female member 1, and the clamping portion 31 of the male member 3. Even in such a structure using a slight difference in strength, the dimensional error can be reduced and the designed engagement strength can be obtained.
[0025]
In the example, the type in which the holding parts 31 of the male member 3 are clamped by four pieces is shown. However, a type in which several pieces are formed at equal intervals in the circumferential direction, for example, a type that is held by three holding parts 31 at intervals of 120 degrees. Of course, it belongs to the clamping part 31 of this invention.
[0026]
FIG. 8 is a partially cutaway front view of a male member of a connection system according to another embodiment of the present invention. The clamping part 31 is divided at equal intervals in the circumferential direction by slits 41 from above. Preferably, it is divided into four at equal intervals of 90 degrees. A through hole 42 is provided at the base of the slit 41 to allow the fluid passage 35 to communicate with the outside. Since the interval between the sandwiching portions 31 adjacent to each other is narrow, the sandwiching portions 31 support each other to prevent twisting and lateral tilting. Therefore, it is possible to prevent the plug 2 and the male member 3 from coming off when the male member 3 is inserted into the conduction path 11 of the female member 1 and is lifted and lowered while being connected to the plug 2. When the male member 3 is inserted into the conduction path 11 of the female member 1 and lifted to be opened, at least a part of the through hole 42 is positioned above the upper end opening of the annular wall 14 of the female member 1. The liquid material is discharged from the through hole 42 through the fluid passage 35.
[0027]
FIG. 9 is a front view of a female member of a connection system according to still another embodiment of the present invention. A disk-shaped outward projecting portion 61 is formed on the upper portion of the plug 2. Two clamping parts 62 that clamp the annular wall part 14 of the female member 1 are provided on the outer peripheral surface of the outward projecting part 61 at intervals of 180 degrees in the circumferential direction. A rib 63 is provided on the inner side of the tip of the sandwiching portion 62. A stop surface 64 that is in liquid-tight contact with the upper surface of the annular wall portion 14 is provided on the lower surface of the outward projecting portion 61. An annular concave groove 51 is formed in the annular wall portion 14 of the female member 1 so that the rib 63 of the clamping portion 62 is clamped. By fitting the rib 63 into the annular groove 51, the female member 1 and the plug 2 are connected, and the stop surface 63 and the upper surface of the annular wall portion 14 are in liquid-tight contact.
[0028]
【The invention's effect】
The first invention of the present application provides a connection system that can easily and reliably open and close the opening of the container with a relatively simple structure by providing a male member with a holding portion that holds the outer periphery of the plug. provide.
[0029]
The second invention of the present application provides a connection system in which each clamping portion can stably hold the plug because a plurality of holding portions of the male member are composed of protrusions arranged at equal intervals in the circumferential direction. .
[0030]
3rd invention of this application has an annular groove where a plug is clamped by a clamping part, and since four projections are arranged at equal intervals in the upper-end circumference direction of a rod-shaped part of a male member, a mold is compared. Provided is a connection system that can be constructed simply.
[0031]
4th invention of this application provides the connection system which can be hold | suppressed inside and can hold | maintain a plug more strongly by contact | connecting the conduction path inner wall of a female member, when a clamping part raises and lowers a male member. .
[0032]
The fifth invention of the present application is provided with an inward protruding portion for locking the plug on the inner wall of the conductive path of the female member, and when the plug closes the opening of the female member, the annular groove in the plug holding portion is When the male member is raised, the holding strength of the plug holding portion and the male member holding portion is determined by the engagement between the main fitting portion of the plug and the opening portion of the female member. On the other hand, when the male member is lowered, the holding strength of the plug holding portion and the male member holding portion is required to engage the plug main fitting portion and the female member opening. Provide a linkage system that is greater than force.
[0033]
6th invention of this application is for connection systems which can open and close the opening part of a container easily and reliably with a comparatively simple structure by providing the clamping part which clamps the outer periphery of a plug in a male member. A male member is provided.
[0034]
7th invention of this application provides the closure member which can perform closure of a container easily and reliably with a comparatively simple structure by providing a to-be-clamped part in the outer periphery of a plug.
[Brief description of the drawings]
FIG. 1A is a front view of a female member of a connection system used in an embodiment of the present invention, and FIG. 1B is a front view of a male member of the connection system.
2A is a longitudinal sectional view of a female member of the connection system, and FIG. 2B is a longitudinal sectional view of a male member of the connection system.
FIG. 3 is a side view of a female member of the connection system.
FIG. 4 is a plan view of a female member of the connection system.
FIG. 5 is a plan view of a male member of the connection system.
FIG. 6 is a cross-sectional view of the connection system in a state where the plug is detached from the upper end opening of the female member of the conduction path and is held by the male member.
FIG. 7 is a cross-sectional view of the connection system with the plug closing the top opening of the fluid passage.
FIG. 8 is a partially cutaway front view of a male member of a connection system according to another embodiment of the present invention.
FIG. 9 is a front view of a female member of a connection system according to still another embodiment of the present invention.
10A is a longitudinal sectional view of a conventional female member of a connection system, and FIG. 10B is a front view of a male member of the connection system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Female member 2 Plug 3 Male member 11 Conduction path 29 Clamping part 31 Clamping part 35 Fluid passage 101 Liquid body bag

Claims

A female member having a conduction path extending in the axial direction and fixed in the opening of the container; a plug that can be detachably engaged with the upper end of the female member to close the upper end opening of the conduction path; And a male member that is inserted into the conduction path of the female member so as to be freely inserted and removed from below. A fluid passage extending from the lower end to the upper end is formed, and the clamping part is divided at equal intervals in the circumferential direction by slits from the upper part. By inserting and lifting the male member into the conduction path of the female member, clamping is performed. The part is sandwiched between the upper end of the female member and the upper end opening of the fluid passage is located where the upper end opening of the fluid passage is not closed by the plug and the female member. The plug is lowered Coupling system in which the upper end opening of the conductive paths are engaged to the upper end of the female member is closed, and the pinching portion of the male member is adapted to disengage from the plug with it is.

Coupling system of claim 1, wherein the plug has an annular groove which is clamped by the clamping portion, clamping portion is characterized in that it is equidistantly divided into four in the circumferential direction.

3. The connection system according to claim 1, wherein when the holding portion raises and lowers the male member, the connecting system contacts the inner wall of the conductive path of the female member.

An inward protruding portion for locking the plug is provided on the inner wall of the conductive path of the female member, and when the plug closes the upper end opening of the conductive path of the female member, the annular groove of the plug is disposed below the inward protruding portion. The connection system according to claim 3, wherein

A disk-shaped outward projecting portion is formed on the upper portion of the plug, an annular wall portion is formed on the outer peripheral surface of the upper end portion of the female member, and a sandwiching portion that sandwiches the annular wall portion of the female member on the outer peripheral surface of the outward projecting portion. 5. A plurality of stop surfaces are provided at equal intervals in the circumferential direction, and a stop surface in liquid-tight contact with the upper surface of the annular wall portion is provided on the lower surface of the outward projecting portion. The connection system according to one.