JP3561079B2

JP3561079B2 - Plunger pump for liquid dispensing container

Info

Publication number: JP3561079B2
Application number: JP09769696A
Authority: JP
Inventors: 孝光野沢
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 1996-03-26
Filing date: 1996-03-26
Publication date: 2004-09-02
Anticipated expiration: 2016-03-26
Also published as: JPH09255020A

Description

【０００１】
【発明の属する技術分野】
本発明は、容器体の口頸部に装着して、プランジャの上下動により、容器体内の液体を吸い上げては注出する液体注出容器のプランジャ型ポンプに関する。
【０００２】
【従来の技術】
従来例１．
一般のプランジャポンプは、吸込み口と吐出口とを有するシリンダに出入作動させるプランジャを備え、その吸込み口の側に吸込み弁を、また、吐出口の側に吐出弁を個別に備えており、そのプランジャを出入操作することにより、吸込み弁及び吐出弁を働かせて、吸込み口から液体を吸い込んでは加圧して、吐出口から送り出すように成っている。
【０００３】
従来例２．
容器体の口頸部に装着した周知の押下げノズルヘッド付きポンプは、下端から吸上げパイプを垂設した縦型のシリンダの下端部に吸込み弁を設け、シリンダ内に上方から管状プランジャを昇降摺動自在に挿入し、該管状プランジャの上端部の内側に吐出弁を設けるとともに、上端部の外側に押下げノズルヘッドを嵌合し、シリンダ内に管状プランジャ及び押下げノズルヘッドを上方へと付勢するスプリングを内装しており、押下げノズルヘッドをスプリングに抗して押し下げし、放しして、管状プランジャをその押し下げとスプリングによる上昇とで昇降動させることにより、吸込み弁及び吐出弁を働かせて、容器体内の液体を吸上げパイプを通じて吸い上げては加圧して、押下げノズルヘッドのノズルから噴出させるように成っている。
【０００４】
従来例３．
例えば実開昭６３‐８８９７１号公報の液体注出容器では、容器体の口頸部に弾性変形自在なドーム状ヘッドを有するポンプを装着しており、このポンプは、前面からノズルを突出するキャップ状の本体の頂壁中央に吸込み弁を設けるとともに、その頂壁から吸込み弁に通じる吸上げパイプを垂設し、その頂壁の上に弾性変形自在なドーム状ヘッドを設けて、該ドーム状ヘッドの内部に加圧室を形成し、また、該加圧室から上記ノズルに至る吐出流路を形成して、該吐出流路に吐出弁を設けたものであり、ドーム状ヘッドの押し込み変形と自体の弾力による復元とにより、吸込み弁及び吐出弁を働かせて、容器体内の液体を吸上げパイプを通じて吸い上げては加圧して、ノズルから噴出させるように成っている。
【０００５】
【発明が解決しようとする課題】
しかし、従来例１．乃至従来例２．ではいずれの場合も、吸込み弁と吐出弁とが別個に設けられているため、弁に関する構造が複雑に成っている。
更に、従来例１．の場合、容器体の口頸部に装着して便利に使用できるようにするには未だ一工夫を要し、従来例２．の場合、押下げノズルヘッドを昇降させるので、液体注出中にノズルが昇降する不便がある。
また、従来例３．の場合、ドーム状ヘッドの変形とその復元とで液体注出を行うため、比較的少量の液体注出には適するものの、液体注出量を多くしたい場合には不適当である。
本発明は、それらの問題点を解決しようとするものであり、併せて、転倒時の液漏れ等を簡単な操作で防止できるようにしようとするものである。
【０００６】
【課題を解決するための手段】
請求項１の発明は、下端から吸上げパイプ２を垂設しかつ前面からノズル３を突設した縦型の外筒１を設け、該外筒１内に上下両端を開放したシリンダ４を水密にかつ下端を外筒下端部から離間させて内装し、該シリンダ４とその外筒１との間にシリンダ下端から上記ノズル３へと通じる吐出流路５を形成し、上記外筒１内の下端部に上記吸上げパイプ２から上記シリンダ４内の下端部へと通じる吸込み流路６を形成し、そのシリンダ４内に上方からプランジャ７を出入摺動自在に挿入し、上記外筒１内の下端部にその吸込み流路６を開閉する吸込み弁８とその吐出流路５を開閉する吐出弁９とを装備させ、それらの吸込み弁８及び吐出弁９につき、上記外筒１内で下端部から起立筒１０を突設し、該起立筒１０の内側から複数の支持脚１１を介して上記シリンダ４内下部へと伸出する水平弁座板１２を連設して、その起立筒１０乃至水平弁座板１２の内側に上記吸込み流路６を形成するとともに、その起立筒１０の外周に弾性変形可能な軟材質の弁部材１３を下端部の筒状基部１４にて嵌合固定させ、該弁部材１３には筒状基部１４の上端から上記複数の支持脚１１及び水平弁座板１２を囲成する筒状垂直吸込み弁部１５とフランジ状水平吐出弁部１６とを一体に連設して、その筒状垂直吸込み弁部１５の内周縁を上記水平弁座板１２の周面に当接させることにより吸込み弁８を、また、フランジ状水平吐出弁部１６の上周縁を上記シリンダ４の下端に当接させることにより吐出弁９を形成したことを特徴とする。
【０００７】
請求項２の発明は、上述の請求項１の発明にあって、上記外筒１の上部外周に容器体の口頸部へ取り付けるための装着筒１８を装備させ、上記シリンダ４内にスプリング１９を内装し、該スプリング１９の下端を上記水平弁座板１２の上面に支持させて上端で上記プランジャ７を上方へと付勢し、上記外筒１の上端部と上記プランジャ７の上端部との間に押し下げ状態でのプランジャ７を保持する着脱自在な螺合手段３７を講じて成る。
【０００８】
請求項３の発明は、上述の請求項１の発明にあって、上記外筒１の上部外周に容器体の口頸部へ取り付けるための装着筒１８を装備させ、上記シリンダ４内にスプリング１９を内装し、該スプリング１９の下端を上記水平弁座板１２の上面に支持させて上端で上記プランジャ７を上方へと付勢し、上記外筒１の上端部と上記プランジャ７の上端部との間に押し下げ状態でのプランジャ７を保持する着脱自在な係止手段４１を講じて成る。
【０００９】
請求項４の発明は、既述請求項１、請求項２又は請求項３の発明にあって、上記外筒１と上記シリンダ４とを円筒に形成してそのシリンダ４を外筒１に対し回動可能に嵌合させ、上記プランジャ７を出入操作筒２０の下端にピストン２１を固定したものとしてそのシリンダ４内に昇降摺動自在にかつ回転不能に嵌合させ、上記吐出流路５をそのシリンダ４の前面で縦溝状に形成して上端を上記ノズル３に連通させ、また、上記外筒１と上記シリンダ４の上部の適所に上昇限に位置する上記ピストン２１で閉孔されかつ該ピストン２１の下降で開孔されて上記出入操作筒２０と上記シリンダ４との間の隙間から外気を導入して容器体内へと供給する容器体内負圧化防止用通気孔２２，２３を相互に連通させて穿設し、もって、上記吐出流路５と上記ノズル３との間並びに上記両容器体内負圧化防止用通気孔２２，２３の相互間を上記シリンダ４の回動に伴い機械的に開閉させる構造として成る。
【００１０】
【発明の実施の形態】
その１．
図１及び図２は、請求項１及び請求項４の発明の実施形態に係る液体注出容器の合成樹脂製プランジャ型ポンプを示している。
図において、１は、下端（中央）の嵌合小筒１７から吸上げパイプ２を嵌合垂設しかつ前面からノズル３を突設した縦型有底円筒状の外筒、４は、該外筒１内に水密にかつ下端を外筒１の下端部から離間させて回転可能に嵌合内装した上下両端開放の縦型円筒状のシリンダ、５は、該シリンダ４とその外筒１との間でシリンダ前面にシリンダ下端からノズル３へと連通させて形成した縦溝状の吐出流路、６は、外筒１内の下端部に吸上げパイプ２からシリンダ４内の下端部へと連通させて形成した吸込み流路、７は、シリンダ４内に上方から出入摺動自在にかつ回転不能に挿入したプランジャ、８は、外筒１内の下端部に吸込み流路６を開閉させるよう装備させた吸込み弁、９は、外筒１内の下端部に吐出流路５を開閉させるよう装備させた吐出弁である。
１８は、外筒１の上部外周に容器体の口頸部へ取り付けるために嵌合装備させた装着筒（内ねじ螺筒）、１９は、シリンダ４内に内装し、下端を後記円盤状水平弁座板１２の上面に支持させて、上端でプランジャ７を上方へと付勢させたスプリング、４５は、外筒１から突出するプランジャ７の上部に上方から被装して下端部をその外筒１の上端部外周に着脱自在に嵌合させたキャップである。
【００１１】
吸込み弁８及び吐出弁９は、外筒１内で下端部から起立筒１０を突設し、該起立筒１０の内側から複数の支持脚１１を介して上記シリンダ４内下部へと伸出する円盤状水平弁座板１２を連設して、その起立筒１０乃至円盤状水平弁座板１２の内側に上記吸込み流路６を形成するとともに、その起立筒１０の外周に弾性変形可能な軟材質の弁部材１３を下端部の筒状基部１４にて嵌合固定させ、該弁部材１３には筒状基部１４の上端から上記複数の支持脚１１及び円盤状水平弁座板１２を囲成する筒状垂直吸込み弁部１５とフランジ状水平吐出弁部１６とを一体に連設して、その筒状垂直吸込み弁部１５の内周縁を円盤状水平弁座板１２の周面に当接させることにより吸込み弁８を、また、フランジ状水平吐出弁部１６の上周縁を上記シリンダ４の下端に当接させることにより吐出弁９を形成している。
【００１２】
プランジャ７は、周縁部２５を外方へと突出した頂壁２４を有する出入操作筒２０の下端部内周に、キャップ状の基部２６の下端にスカートを上下に突出したスカート部２７を連設したピストン２１を、基部２６にて嵌合固定しており、その出入操作筒２０の内周の中途部乃至上部に複数の縦リブ２８を配設するとともに、下端部の内周に係止突条２９を設けて、それらの縦リブ２８の下端でそのピストン２１の基部２６の上面を受け、かつ、該基部２６の外周適所に係止突条３０を周設して出入操作筒２０下端部の係止突条２９と係合させている。また、出入操作筒２０には、外周面に複数の縦案内溝３１を配設し、シリンダ４内の上端部にそれらの縦案内溝３１と係合する複数の縦案内突条３２を設けて、シリンダ４内に昇降摺動自在にかつ回転不能に嵌合させている。
【００１３】
外筒１とシリンダ４には、外筒１の上端部内周に係合凹溝３３を周設し、シリンダ４の上端部外周に係合突条３４を周設して、相互を回転可能に係合させることにより、シリンダ４を吊り下げ状態に保持させており、また、外筒１とシリンダ４の後面上部の適所に、上昇限に位置するピストン２１のスカート部２７で閉孔されかつ該ピストン２１の下降で開孔されて出入操作筒２０とシリンダ４との間の隙間から外気を導入して容器体内へと供給する容器体内負圧化防止用通気孔２２，２３を相互に連通させて穿設しており、もって、出入操作筒２０を手回動させることにより、シリンダ４を適宜に回動させて、吐出流路５とノズル３との間並びに両容器体内負圧化防止用通気孔２２，２３の相互間を機械的に開閉させるようにしている。
【００１４】
スプリング１９の下端は、円盤状水平弁座板１２の上面に横断面十字状の起立片３５を立設して嵌合支持させ、上端は、ピストン２１のキャップ状の基部２６に挿入して頂壁に突き当てるとともに、該基部２６の内周面に複数の支持縦突条３６を配設して嵌合支持させている。
【００１５】
如上の構成であり、使用に当たっては、液体を収容した容器体の口頸部に装着筒１８をもって螺着する。そして、その液体を注出するときは、キャップ４５を取り外して、プランジャ７を出入操作筒２０の押し込み操作によりスプリング１９に抗して押し下げし、放してスプリング１９の弾力で復帰させる。これを一乃至複数回行うことにより、その都度吸込み弁８及び吐出弁９が働いて、シリンダ４内が加圧態勢、負圧態勢となり、容器内の液体が、その負圧態勢において、吸上げパイプ２、吸込み流路６及び吸込み弁８を経てシリンダ４内に吸い上げられ、加圧態勢において、シリンダ４内で加圧された液体が吐出弁９及び吐出流路５を経てノズル３から外部へと注出される。
そして、シリンダ４内の負圧態勢では、容器体内の液体がシリンダ４内へと吸い上げられるため、容器体内が負圧化態勢となるが、このときには、プランジャ７の下降に伴い容器体内負圧化防止用通気孔２２，２３が開孔して、外気が出入操作筒２０とシリンダ４との間の隙間から流入し、容器体内負圧化防止用通気孔２２，２３を経て容器体内に流入し、容器体内は大気圧に維持される。
また、吸込み弁８は、弁部材１３が弾性変形可能な軟材質であるから、その吸い込みの際にのみシリンダ４内の負圧化で筒状垂直吸込み弁部１５が拡がって、円盤状水平弁座板１２から離間し、開弁する。また、吐出弁９は、その注出の際にのみシリンダ４内の加圧により液圧でフランジ状水平吐出弁部１６が押し下げられて、シリンダ４の下端から離間し、開弁する。
注出後、プランジャ７を出入操作筒２０の回動操作により回動させれば、シリンダ４も回動し、吐出流路６とノズル３との間並びに両容器体内負圧化防止用通気孔２２，２３の相互間が閉じ、転倒等による液漏れが阻止される。
【００１６】
その２．
図３及び図４は、請求項２及び請求項４の発明の実施形態に係る液体注出容器の合成樹脂製プランジャ型ポンプを示している。
この場合は、上述のその１．のものにおいて、外筒１の上端部とプランジャ７の上端部との間に、押し下げ状態でのプランジャ７を保持する着脱自在な螺合手段３７を講じている。
この螺合手段３７は、外筒１の上端からやや大径の張出し短筒３８を一体に起立させ、該張出し短筒３８の内周に適数の螺条４６を設け、また、プランジャ７における出入操作筒２０の頂壁２４周縁部を外方へ大きく突出させて張出し周縁部３９に形成し、該張出し周縁部３９の下面に上記張出し短筒３８の螺条４６と螺合させる短螺筒４０を垂設しており、プランジャ７の押し下げ状態において、短螺筒４０を張出し短筒３８の螺条４６へと螺合させることによって、その押し下げ状態を保持できるようにしている。
なお、張出し短筒３８の螺条４６と短螺筒４０とは、内外逆でもよい。
その他の構造及び作用等については、その１．の場合と同じにつき、説明を省略する。
【００１７】
その３．
図５及び図６は、請求項３及び請求項４の発明の実施形態に係る液体注出容器の合成樹脂製プランジャ型ポンプを示している。
この場合は、上述のその２のものにおいて、外筒１の上端部とプランジャ７の上端部との間に、押し下げ状態でのプランジャ７を保持する着脱自在な係止手段４１を講じている。
この係止手段４１は、外筒１の上端から外向きフランジ４７を突設し、該外向きフランジ４７の適所に複数の切欠４２を形成し、また、プランジャ７における出入操作筒２０の頂壁２４周縁部を外方へ大きく突出させて張出し周縁部３９に形成し、該張出し周縁部３９の下面に上記外向きフランジ４７の外側に着脱自在に嵌める短垂筒４３を垂設し、該短垂筒４３の内縁に上記各切欠４２と対応させて複数の係止爪４４を突設しており、プランジャ７の押し下げ状態において、各係止爪４４を上記各切欠４２に通過させて短垂筒４３を外向きフランジ４７に嵌め、かつ、回動させて係止爪４４をその外向きフランジ４７に係合させることによって、その押し下げ状態を保持できるようにしている。
なお、係止爪４４を短垂筒４３の外縁に設けて、外筒１の上端に適宜に形成した内向きフランジに係合させるようにしてもよい。フランジではなく単なる係止鈎部に形成してもよい。
その他の構造及び作用等については、その１．の場合と同じにつき、説明を省略する。
【００１８】
【発明の効果】
請求項１、請求項２、請求項３及び請求項４の発明によれば、既述構成であるから、吸込み弁８と吐出弁９とを一つに設けることができて、弁に関する構造を簡潔にでき、プランジャ型ポンプであっても支障なく容器体の口頸部に装着できて、そのポンプ操作にもノズルが昇降することはなく、しかも、プランジャ７の一度の操作で高効率に多量の液体を注出できて、便利に使用できる。
加えて、請求項２及び請求項３の発明によれば、プランジャ７を押し下げた状態にして、螺合手段３７を螺合させ、又は、係止手段４１を係合させることによって、その押し下げ状態を保持でき、したがって、商品流通過程での形態を小さくできて、梱包、運搬、保管等に頗る便利である。
また、請求項４の発明によれば、出入操作筒２０を回動操作してプランジャ７を回動させることにより、シリンダ４を回動させれば、吐出流路６とノズル３との間並びに両容器体内負圧化防止用通気孔２２，２３の相互間を容易に閉じることができ、したがって、転倒等による液漏れを的確に防止することができる。
【図面の簡単な説明】
【図１】請求項１及び請求項４の発明に係る液体注出容器のプランジャ型ポンプの実施形態その１．を示す縦断側面図である。
【図２】図１のキャップを外した状態でのＡ−Ａ線断面図である。
【図３】請求項２及び請求項４の発明に係る液体注出容器のプランジャ型ポンプの実施形態その２．を示す縦断側面図である。
【図４】図３のＢ−Ｂ線断面図である。
【図５】請求項３及び請求項４の発明に係る液体注出容器のプランジャ型ポンプの実施形態その３．を示す縦断側面図である。
【図６】図５のＣ−Ｃ線断面図である。
【符号の説明】
１…外筒２…吸上げパイプ
３…ノズル４…シリンダ
５…吐出流路６…吸込み流路
７…プランジャ８…吸込み弁
９…吐出弁１０…起立筒
１１…支持脚１２…水平弁座板
１３…弁部材１４…筒状基部
１５…筒状垂直吸込み弁部１６…フランジ状水平吐出弁部
１７…嵌合小筒１８…装着筒
１９…スプリング２０…出入操作筒
２１…ピストン２２…容器体内負圧化防止用通気孔
２３…容器体内負圧化防止用通気孔２４…頂壁
２５…周縁部２６…キャップ状の基部
２７…スカート部２８…縦リブ
２９…係止突条３０…係止突条
３１…縦案内溝３２…縦案内突条
３３…係合凹溝３４…係合突条
３５…起立片３６…支持縦突条
３７…螺合手段３８…張出し短筒
３９…張出し周縁部４０…短螺筒
４１…係止手段４２…切欠
４３…短垂筒４４…係止爪
４５…キャップ４６…螺条
４７…外向きフランジ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a plunger-type pump for a liquid discharging container that is mounted on the mouth and neck of a container body and that sucks up and discharges liquid in the container body by vertically moving a plunger.
[0002]
[Prior art]
Conventional example 1.
A general plunger pump includes a plunger that operates to enter and exit a cylinder having a suction port and a discharge port, a suction valve on the side of the suction port, and a discharge valve on the side of the discharge port. By operating the plunger in and out, the suction valve and the discharge valve are operated to suck the liquid from the suction port, pressurize the liquid, and discharge the liquid from the discharge port.
[0003]
Conventional example 2.
A well-known pump with a down nozzle head attached to the mouth and neck of a container body is provided with a suction valve at the lower end of a vertical cylinder with a suction pipe suspended from the lower end, and moves up and down the tubular plunger from above in the cylinder. Slidingly inserted, a discharge valve is provided inside the upper end of the tubular plunger, and a press-down nozzle head is fitted outside the upper end, and the tubular plunger and the press-down nozzle head are moved upward in the cylinder. A biasing spring is built in, and the push-down nozzle head is pushed down against the spring, released, and the tubular plunger is moved up and down by the pushing down and the rising by the spring, so that the suction valve and the discharge valve are moved. By working, the liquid in the container is sucked up through the suction pipe, then pressurized and ejected from the nozzle of the press-down nozzle head.
[0004]
Conventional example 3.
For example, in the liquid dispensing container disclosed in Japanese Utility Model Laid-Open Publication No. 63-88971, a pump having an elastically deformable dome-shaped head is mounted on the mouth and neck of the container body. This pump has a cap that projects a nozzle from the front surface. A suction valve is provided at the center of the top wall of the main body, and a suction pipe leading from the top wall to the suction valve is provided vertically. An elastically deformable dome-shaped head is provided on the top wall, and the dome shape is provided. A pressurizing chamber is formed inside the head, a discharge flow path from the pressurizing chamber to the nozzle is formed, and a discharge valve is provided in the discharge flow path. The suction valve and the discharge valve are actuated, and the liquid in the container is sucked up through the suction pipe, pressurized, and ejected from the nozzle by the restitution by the elasticity of the nozzle.
[0005]
[Problems to be solved by the invention]
However, Conventional Example 1. Or Conventional Example 2. In each case, the suction valve and the discharge valve are separately provided, so that the structure relating to the valve is complicated.
Further, Conventional Example 1. In the case of (1), some contrivance is still required to attach it to the mouth and neck of the container so that it can be used conveniently. In the case of (1), since the press-down nozzle head is moved up and down, there is an inconvenience that the nozzle goes up and down during liquid injection.
Conventional example 3. In the case of (1), the liquid is dispensed by deforming the dome-shaped head and restoring the same, so that it is suitable for dispensing a relatively small amount of liquid, but is unsuitable for increasing the amount of liquid to be dispensed.
The present invention is intended to solve these problems, and at the same time, is intended to prevent a liquid leak or the like at the time of tipping over by a simple operation.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, a vertical outer cylinder 1 having a suction pipe 2 suspended from a lower end and a nozzle 3 projecting from a front surface is provided, and a cylinder 4 having upper and lower ends opened in the outer cylinder 1 is watertight. And the lower end thereof is separated from the lower end of the outer cylinder, and a discharge passage 5 communicating from the lower end of the cylinder to the nozzle 3 is formed between the cylinder 4 and the outer cylinder 1. At the lower end, a suction flow path 6 is formed from the suction pipe 2 to the lower end of the cylinder 4, and a plunger 7 is inserted into the cylinder 4 from the upper side so as to slide in and out. A suction valve 8 for opening and closing the suction flow path 6 and a discharge valve 9 for opening and closing the discharge flow path 5 are provided at the lower end portion of the outer cylinder 1 with respect to the suction valve 8 and the discharge valve 9. An upright tube 10 is protruded from the portion, and a plurality of support legs 11 are provided from the inside of the upright tube 10. A horizontal valve seat plate 12 extending to the lower portion inside the cylinder 4 is provided in series, and the suction passage 6 is formed inside the upright cylinder 10 to the horizontal valve seat plate 12. An elastically deformable soft valve member 13 is fitted to and fixed to the outer periphery of a cylindrical base 14 at the lower end. The plurality of support legs 11 and the horizontal valve are attached to the valve member 13 from the upper end of the cylindrical base 14. A cylindrical vertical suction valve portion 15 surrounding the seat plate 12 and a flange-shaped horizontal discharge valve portion 16 are integrally connected, and the inner peripheral edge of the cylindrical vertical suction valve portion 15 is The suction valve 8 is formed by making contact with the peripheral surface, and the discharge valve 9 is formed by making the upper peripheral edge of the flange-shaped horizontal discharge valve portion 16 contact with the lower end of the cylinder 4.
[0007]
According to a second aspect of the present invention, in the first aspect of the present invention, a mounting cylinder 18 for attaching to the mouth and neck of the container body is provided on the outer periphery of the upper part of the outer cylinder 1, and a spring 19 is provided in the cylinder 4. And the lower end of the spring 19 is supported on the upper surface of the horizontal valve seat plate 12 to urge the plunger 7 upward at the upper end, so that the upper end of the outer cylinder 1 and the upper end of the plunger 7 And detachable screwing means 37 for holding the plunger 7 in the depressed state.
[0008]
According to a third aspect of the present invention, in the first aspect of the present invention, a mounting cylinder 18 for attaching to the mouth and neck portion of the container body is provided on the outer periphery of the upper part of the outer cylinder 1, and a spring 19 is provided in the cylinder 4. And the lower end of the spring 19 is supported on the upper surface of the horizontal valve seat plate 12 to urge the plunger 7 upward at the upper end, so that the upper end of the outer cylinder 1 and the upper end of the plunger 7 And detachable locking means 41 for holding the plunger 7 in the depressed state.
[0009]
The invention of claim 4 is the invention of claim 1, claim 2 or claim 3, wherein the outer cylinder 1 and the cylinder 4 are formed into a cylinder, and the cylinder 4 is attached to the outer cylinder 1. The plunger 7 is rotatably fitted, the piston 21 is fixed to the lower end of the access operation cylinder 20, and the plunger 7 is fitted up and down slidably and non-rotatably in the cylinder 4. The upper end of the cylinder 4 is communicated with the nozzle 3 by forming a vertical groove on the front surface of the cylinder 4, and the upper end of the cylinder 4 is closed by the piston 21 which is located at an appropriate upper position of the outer cylinder 1 and the cylinder 4. The vent holes 22 and 23 are opened when the piston 21 descends to prevent negative pressure from being introduced into the container body by introducing outside air from the gap between the access operation cylinder 20 and the cylinder 4 and supplying it to the container body. , So that the discharge flow path 5 Serial made between between and mutual of both container body negative pressure prevents vents 22 and 23 of the nozzle 3 as a structure for mechanically opening and closing with the rotation of the cylinder 4.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Part 1.
FIGS. 1 and 2 show a plunger type pump made of synthetic resin for a liquid pouring container according to an embodiment of the present invention.
In the figure, reference numeral 1 denotes a vertical bottomed cylindrical outer cylinder in which a suction pipe 2 is fitted vertically from a fitting small cylinder 17 at the lower end (center) and a nozzle 3 is projected from the front surface. A vertical cylindrical cylinder 5, which is rotatably fitted and rotatably fitted inside the outer cylinder 1 with its lower end separated from the lower end of the outer cylinder 1 so as to be rotatable, includes the cylinder 4 and its outer cylinder 1 A vertical groove-shaped discharge flow path 6 formed on the front surface of the cylinder so as to communicate from the lower end of the cylinder to the nozzle 3, from the suction pipe 2 at the lower end of the outer cylinder 1 to the lower end of the cylinder 4. A suction passage 7 formed to communicate with the plunger 7 is inserted into the cylinder 4 from the top so as to be slidable and non-rotatable, and a plunger 8 is provided to open and close the suction passage 6 at the lower end in the outer cylinder 1. The equipped suction valve 9 was provided at the lower end in the outer cylinder 1 so as to open and close the discharge flow path 5. It is off valve.
Reference numeral 18 denotes a mounting cylinder (inner threaded cylinder) fitted to the outer periphery of the upper part of the outer cylinder 1 to be attached to the mouth and neck of the container body. A spring 45, which is supported on the upper surface of the valve seat plate 12 and biases the plunger 7 upward at the upper end, is mounted from above on the upper portion of the plunger 7 protruding from the outer cylinder 1 and the lower end thereof is placed outside. The cap is detachably fitted to the outer periphery of the upper end of the cylinder 1.
[0011]
The suction valve 8 and the discharge valve 9 project from the lower end in the outer cylinder 1 and protrude from the lower end thereof, and extend from the inside of the upright cylinder 10 to the lower part inside the cylinder 4 via a plurality of support legs 11. A disk-shaped horizontal valve seat plate 12 is continuously provided, the suction passage 6 is formed inside the upright cylinder 10 through the disk-shaped horizontal valve seat plate 12, and a soft elastically deformable outer periphery of the upright cylinder 10 is provided. A valve member 13 made of a material is fitted and fixed at a cylindrical base 14 at the lower end, and the valve member 13 surrounds the plurality of support legs 11 and the disk-shaped horizontal valve seat plate 12 from the upper end of the cylindrical base 14. The cylindrical vertical suction valve portion 15 and the flange-shaped horizontal discharge valve portion 16 are integrally connected to each other, and the inner peripheral edge of the cylindrical vertical suction valve portion 15 abuts on the peripheral surface of the disk-shaped horizontal valve seat plate 12. Then, the suction valve 8 and the upper peripheral edge of the flange-shaped horizontal discharge valve portion 16 are Forming a discharge valve 9 by abutting on the lower end.
[0012]
In the plunger 7, a skirt portion 27 having a skirt vertically protruding from a lower end of a cap-shaped base portion 26 is continuously provided on an inner periphery of a lower end portion of the access operation cylinder 20 having a top wall 24 having a peripheral edge portion 25 projecting outward. The piston 21 is fitted and fixed at the base 26, and a plurality of vertical ribs 28 are disposed in the middle or upper part of the inner periphery of the access operation tube 20, and a locking ridge is provided on the inner periphery of the lower end. 29, the upper ends of the bases 26 of the pistons 21 are received at the lower ends of the vertical ribs 28, and the locking ridges 30 are provided at appropriate places on the outer periphery of the base 26 to form the lower end of the access operation cylinder 20. It is engaged with the locking ridge 29. In addition, a plurality of vertical guide grooves 31 are provided on the outer peripheral surface of the access operation cylinder 20, and a plurality of vertical guide protrusions 32 that engage with the vertical guide grooves 31 are provided at the upper end in the cylinder 4. , Is fitted in the cylinder 4 so as to be slidable up and down and non-rotatably.
[0013]
The outer cylinder 1 and the cylinder 4 are provided with an engaging groove 33 on the inner periphery of the upper end of the outer cylinder 1 and the engaging ridge 34 on the outer periphery of the upper end of the cylinder 4 so that they can rotate with each other. By engaging, the cylinder 4 is held in a suspended state. Further, the cylinder 4 is closed at an appropriate position on the upper surface of the rear surface of the outer cylinder 1 and the cylinder 4 by the skirt portion 27 of the piston 21 located at the ascending limit. The vent holes 22 and 23 for preventing negative pressure inside the container, which are opened by the lowering of the piston 21 and are introduced through the gap between the access operation cylinder 20 and the cylinder 4 to supply the outside air into the container, are connected to each other. By manually rotating the access operation cylinder 20, the cylinder 4 is appropriately rotated to prevent a negative pressure between the discharge flow path 5 and the nozzle 3 and the inside of both containers. The air holes 22 and 23 are mechanically opened and closed.
[0014]
A lower end of the spring 19 is provided with an upright piece 35 having a cross-shaped cross section standing upright on the upper surface of the disc-shaped horizontal valve seat plate 12 to be fitted and supported, and an upper end is inserted into a cap-shaped base 26 of the piston 21. A plurality of supporting vertical ridges 36 are arranged on the inner peripheral surface of the base 26 and fitted and supported.
[0015]
In use, the mounting cylinder 18 is screwed to the mouth and neck of the container body containing the liquid. When the liquid is to be poured, the cap 45 is removed, and the plunger 7 is pushed down against the spring 19 by the pushing operation of the access operation tube 20, and is released to return with the elasticity of the spring 19. By performing this one or more times, each time the suction valve 8 and the discharge valve 9 operate, the inside of the cylinder 4 becomes a pressurized state and a negative pressure state, and the liquid in the container is sucked up in the negative pressure state. The liquid is sucked up into the cylinder 4 via the pipe 2, the suction passage 6 and the suction valve 8, and in a pressurized state, the liquid pressurized in the cylinder 4 passes from the nozzle 3 to the outside via the discharge valve 9 and the discharge passage 5. It is poured out.
Then, in the negative pressure state in the cylinder 4, the liquid in the container is sucked up into the cylinder 4, so that the container is in a negative pressure state. The prevention vent holes 22 and 23 are opened, and the outside air flows in from the gap between the inflow / outflow operation cylinder 20 and the cylinder 4 and flows into the container body through the container interior negative pressure prevention vent holes 22 and 23. The inside of the container is maintained at atmospheric pressure.
Further, since the suction valve 8 is made of a soft material whose valve member 13 can be elastically deformed, the cylindrical vertical suction valve portion 15 expands due to a negative pressure in the cylinder 4 only at the time of suction, and the disk-shaped horizontal valve is opened. The valve is separated from the seat plate 12 and opened. The discharge valve 9 is opened only when it is poured out, with the flange-shaped horizontal discharge valve portion 16 being pushed down by the hydraulic pressure due to the pressurization in the cylinder 4 and separated from the lower end of the cylinder 4.
If the plunger 7 is turned by the turning operation of the access operation tube 20 after the pouring, the cylinder 4 is also turned, and the vent hole between the discharge flow path 6 and the nozzle 3 and the inside of both container negative pressure prevention is formed. The space between the nozzles 22 and 23 is closed to prevent the liquid from leaking due to a fall or the like.
[0016]
Part 2.
FIGS. 3 and 4 show a plunger type pump made of synthetic resin for a liquid pouring container according to the second and fourth embodiments of the present invention.
In this case, the above-mentioned 1 .. In this embodiment, a detachable screwing means 37 is provided between the upper end of the outer cylinder 1 and the upper end of the plunger 7 for holding the plunger 7 in a depressed state.
This screwing means 37 integrally raises a slightly large-diameter projecting short tube 38 from the upper end of the outer tube 1, and provides an appropriate number of threads 46 on the inner periphery of the projecting short tube 38. A short screw tube that protrudes the outer peripheral edge of the top wall 24 of the access operation tube 20 largely outward to form an overhanging peripheral portion 39, and is screwed to a lower surface of the overhanging peripheral portion 39 with the thread 46 of the overhanging short tube 38. When the plunger 7 is pressed down, the short screw tube 40 is extended and screwed into the thread 46 of the short tube 38 so that the pressed state can be maintained.
The thread 46 of the overhanging short tube 38 and the short screw tube 40 may be reversed inside and outside.
For other structures and functions, see 1. The description is omitted because it is the same as the case of.
[0017]
Part 3.
FIG. 5 and FIG. 6 show a plunger type pump made of synthetic resin for a liquid pouring container according to the third and fourth embodiments of the present invention.
In this case, in the above-described second embodiment, a detachable locking means 41 for holding the plunger 7 in a depressed state is provided between the upper end of the outer cylinder 1 and the upper end of the plunger 7.
The locking means 41 is formed by projecting an outward flange 47 from the upper end of the outer cylinder 1, forming a plurality of cutouts 42 at appropriate positions on the outward flange 47, and forming a top wall of the access operation cylinder 20 in the plunger 7. The outer peripheral edge portion 39 is formed so as to protrude outwardly from the outer peripheral flange portion 39, and a short vertical tube 43 detachably fitted to the outside of the outward flange 47 is vertically provided on the lower surface of the overhanging peripheral portion 39, A plurality of locking claws 44 are protruded from the inner edge of the vertical tube 43 in correspondence with the respective notches 42, and when the plunger 7 is pushed down, the respective locking claws 44 pass through the respective notches 42 to be short-pending. The cylinder 43 is fitted on the outward flange 47 and rotated to engage the locking claw 44 with the outward flange 47 so that the pushed-down state can be maintained.
In addition, the locking claw 44 may be provided on the outer edge of the short vertical tube 43 and engaged with an inward flange appropriately formed on the upper end of the outer tube 1. Instead of a flange, it may be formed as a simple locking hook.
For other structures and functions, see 1. The description is omitted because it is the same as the case of.
[0018]
【The invention's effect】
According to the first, second, third, and fourth aspects of the present invention, the suction valve 8 and the discharge valve 9 can be provided in one piece because of the above-described configuration, and the structure relating to the valve is reduced. The plunger-type pump can be simply mounted on the mouth and neck of the container without any trouble, and the nozzle does not move up and down for the pump operation. Liquid can be poured out and used conveniently.
In addition, according to the second and third aspects of the present invention, the plunger 7 is pushed down, and the screwing means 37 is screwed or the locking means 41 is engaged, so that the plunger 7 is pushed down. Therefore, the form in the product distribution process can be reduced, which is very convenient for packing, transportation, storage and the like.
According to the fourth aspect of the present invention, by rotating the plunger 7 by rotating the in-and-out operation cylinder 20 to rotate the cylinder 4, the space between the discharge flow path 6 and the nozzle 3 is increased. It is possible to easily close the space between the vent holes 22 and 23 for preventing the negative pressure from being generated in both the containers, and therefore, it is possible to appropriately prevent the liquid leakage due to a fall or the like.
[Brief description of the drawings]
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an embodiment of a plunger type pump for a liquid discharge container according to the first and fourth aspects of the present invention. FIG.
FIG. 2 is a sectional view taken along line AA of FIG. 1 with a cap removed.
FIG. 3 is an embodiment of a plunger-type pump for a liquid discharging container according to the inventions of claims 2 and 4; FIG.
FIG. 4 is a sectional view taken along line BB of FIG. 3;
FIG. 5 is an embodiment of a plunger type pump for a liquid discharging container according to the third and fourth aspects of the present invention. FIG.
FIG. 6 is a sectional view taken along line CC of FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Outer cylinder 2 ... Suction pipe 3 ... Nozzle 4 ... Cylinder 5 ... Discharge flow path 6 ... Suction flow path 7 ... Plunger 8 ... Suction valve 9 ... Discharge valve 10 ... Standing cylinder 11 ... Support leg 12 ... Horizontal valve seat plate DESCRIPTION OF SYMBOLS 13 ... Valve member 14 ... Cylindrical base 15 ... Cylindrical vertical suction valve part 16 ... Flange-like horizontal discharge valve part 17 ... Fitting small cylinder 18 ... Mounting cylinder 19 ... Spring 20 ... In / out operation cylinder 21 ... Piston 22 ... Inside the container Ventilation hole for preventing negative pressure 23: Ventilation hole for preventing negative pressure in the container 24 ... Top wall 25 ... Peripheral edge 26 ... Cap-shaped base 27 ... Skirt 28 ... Vertical rib 29 ... Locking ridge 30 ... Locking Projection 31 ... Vertical guide groove 32 ... Vertical guide protrusion 33 ... Engagement concave groove 34 ... Engagement protrusion 35 ... Standing piece 36 ... Support vertical protrusion 37 ... Screwing means 38 ... Overhanging short cylinder 39 ... Overhanging peripheral part 40 ... short screw cylinder 41 ... locking means 42 ... notch 43 ... short hanging cylinder 44 ... Stop claw 45 ... cap 46 ... thread 47 ... outward flange

Claims

下端から吸上げパイプ２を垂設しかつ前面からノズル３を突設した縦型の外筒１を設け、該外筒１内に上下両端を開放したシリンダ４を水密にかつ下端を外筒下端部から離間させて内装し、該シリンダ４とその外筒１との間にシリンダ下端から上記ノズル３へと通じる吐出流路５を形成し、上記外筒１内の下端部に上記吸上げパイプ２から上記シリンダ４内の下端部へと通じる吸込み流路６を形成し、そのシリンダ４内に上方からプランジャ７を出入摺動自在に挿入し、上記外筒１内の下端部にその吸込み流路６を開閉する吸込み弁８とその吐出流路５を開閉する吐出弁９とを装備させ、それらの吸込み弁８及び吐出弁９につき、上記外筒１内で下端部から起立筒１０を突設し、該起立筒１０の内側から複数の支持脚１１を介して上記シリンダ４内下部へと伸出する水平弁座板１２を連設して、その起立筒１０乃至水平弁座板１２の内側に上記吸込み流路６を形成するとともに、その起立筒１０の外周に弾性変形可能な軟材質の弁部材１３を下端部の筒状基部１４にて嵌合固定させ、該弁部材１３には筒状基部１４の上端から上記複数の支持脚１１及び水平弁座板１２を囲成する筒状垂直吸込み弁部１５とフランジ状水平吐出弁部１６とを一体に連設して、その筒状垂直吸込み弁部１５の内周縁を上記水平弁座板１２の周面に当接させることにより吸込み弁８を、また、フランジ状水平吐出弁部１６の上周縁を上記シリンダ４の下端に当接させることにより吐出弁９を形成したことを特徴とする液体注出容器のプランジャ型ポンプ。A vertical outer cylinder 1 having a suction pipe 2 suspended from a lower end and a nozzle 3 protruding from a front face is provided. A cylinder 4 having upper and lower ends opened in the outer cylinder 1 is made watertight and a lower end is formed at a lower end of the outer cylinder. The discharge pipe 5 is formed between the cylinder 4 and the outer cylinder 1 so as to communicate from the lower end of the cylinder to the nozzle 3, and the suction pipe is formed at the lower end of the outer cylinder 1. 2, a plunger 7 is formed from above into the cylinder 4 so as to freely slide in and out of the cylinder 4. The suction flow path 6 communicates with the plunger 7 from above and into the lower end in the outer cylinder 1. A suction valve 8 for opening and closing the passage 6 and a discharge valve 9 for opening and closing the discharge flow path 5 are provided, and the upright cylinder 10 projects from the lower end of the outer cylinder 1 with respect to the suction valve 8 and the discharge valve 9. And a plurality of support legs 11 from the inside of the upright cylinder 4, a horizontal valve seat plate 12 extending inward and downward is provided in a row, and the suction passage 6 is formed inside the upright cylinder 10 to the horizontal valve seat plate 12. A deformable soft material valve member 13 is fitted and fixed at a cylindrical base 14 at the lower end. The plurality of support legs 11 and the horizontal valve seat plate 12 are attached to the valve member 13 from the upper end of the cylindrical base 14. The surrounding cylindrical vertical suction valve portion 15 and the flange-like horizontal discharge valve portion 16 are integrally connected, and the inner peripheral edge of the cylindrical vertical suction valve portion 15 is brought into contact with the peripheral surface of the horizontal valve seat plate 12. A plunger for a liquid discharge container, wherein the plunger is formed by bringing the suction valve 8 into contact therewith and the upper peripheral edge of the flange-shaped horizontal discharge valve portion 16 into contact with the lower end of the cylinder 4. Type pump.

上記外筒１の上部外周に容器体の口頸部へ取り付けるための装着筒１８を装備させ、上記シリンダ４内にスプリング１９を内装し、該スプリング１９の下端を上記水平弁座板１２の上面に支持させて上端で上記プランジャ７を上方へと付勢し、上記外筒１の上端部と上記プランジャ７の上端部との間に押し下げ状態でのプランジャ７を保持する着脱自在な螺合手段３７を講じて成る請求項１に記載の液体注出容器のプランジャ型ポンプ。A mounting cylinder 18 for attaching to the mouth and neck of the container body is provided on the outer periphery of the upper part of the outer cylinder 1, a spring 19 is provided inside the cylinder 4, and a lower end of the spring 19 is attached to an upper surface of the horizontal valve seat plate 12. Detachable screwing means for urging the plunger 7 upward at the upper end thereof and holding the plunger 7 in a depressed state between the upper end of the outer cylinder 1 and the upper end of the plunger 7 A plunger-type pump for a liquid dispensing container according to claim 1, wherein the pump is provided with 37.

上記外筒１の上部外周に容器体の口頸部へ取り付けるための装着筒１８を装備させ、上記シリンダ４内にスプリング１９を内装し、該スプリング１９の下端を上記水平弁座板１２の上面に支持させて上端で上記プランジャ７を上方へと付勢し、上記外筒１の上端部と上記プランジャ７の上端部との間に押し下げ状態でのプランジャ７を保持する着脱自在な係止手段４１を講じて成る請求項１に記載の液体注出容器のプランジャ型ポンプ。A mounting cylinder 18 for attaching to the mouth and neck of the container body is provided on the outer periphery of the upper part of the outer cylinder 1, a spring 19 is provided inside the cylinder 4, and a lower end of the spring 19 is attached to an upper surface of the horizontal valve seat plate 12. Detachable engaging means for urging the plunger 7 upward at the upper end thereof and holding the plunger 7 in a pushed-down state between the upper end of the outer cylinder 1 and the upper end of the plunger 7 The plunger-type pump for a liquid discharging container according to claim 1, wherein the pump is configured as follows.

上記外筒１と上記シリンダ４とを円筒に形成してそのシリンダ４を外筒１に対し回動可能に嵌合させ、上記プランジャ７を出入操作筒２０の下端にピストン２１を固定したものとしてそのシリンダ４内に昇降摺動自在にかつ回転不能に嵌合させ、上記吐出流路５をそのシリンダ４の前面で縦溝状に形成して上端を上記ノズル３に連通させ、また、上記外筒１と上記シリンダ４の上部の適所に上昇限に位置する上記ピストン２１で閉孔されかつ該ピストン２１の下降で開孔されて上記出入操作筒２０と上記シリンダ４との間の隙間から外気を導入して容器体内へと供給する容器体内負圧化防止用通気孔２２，２３を相互に連通させて穿設し、もって、上記吐出流路５と上記ノズル３との間並びに上記両容器体内負圧化防止用通気孔２２，２３の相互間を上記シリンダ４の回動に伴い機械的に開閉させる構造として成る請求項１、請求項２又は請求項３に記載の液体注出容器のプランジャ型ポンプ。It is assumed that the outer cylinder 1 and the cylinder 4 are formed into a cylinder, the cylinder 4 is rotatably fitted to the outer cylinder 1, and the plunger 7 is fixed to a lower end of the access operation cylinder 20 with a piston 21 fixed thereto. The discharge channel 5 is vertically slidably fitted in the cylinder 4 so as to be slidable and non-rotatable, and the discharge channel 5 is formed in a vertical groove shape on the front surface of the cylinder 4 so that the upper end communicates with the nozzle 3. It is closed by the piston 21 positioned at the uppermost position in the upper part of the cylinder 1 and the cylinder 4 and opened by the lowering of the piston 21, and is opened through the gap between the access operation cylinder 20 and the cylinder 4. The vent holes 22 and 23 for preventing the negative pressure in the container are supplied and supplied to the inside of the container so as to communicate with each other, so that the space between the discharge channel 5 and the nozzle 3 and the two containers are provided. Ventilation holes 22 and 23 for preventing negative pressure in the body Claim 1 comprising the 互間 a structure for mechanically opening and closing with the rotation of the cylinder 4, a plunger-type pump of the liquid dispensing container according to claim 2 or claim 3.