JP3566799B2

JP3566799B2 - Pump container for foam release

Info

Publication number: JP3566799B2
Application number: JP31468295A
Authority: JP
Inventors: 博水島; 治夫土田; 茂雄飯塚
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 1995-05-23
Filing date: 1995-11-07
Publication date: 2004-09-15
Anticipated expiration: 2015-11-07
Also published as: JPH0938543A

Description

【０００１】
【発明の属する技術分野】
本発明は、上半を空気用の大径シリンダ、かつ下半を液体用の小径シリンダとしたシリンダ部材を容器体内へ垂設し、上記大小の両シリンダ内へ大径および小径の筒状ピストンを嵌合させてシリンダ内から作動部材を起立する、泡放出用ポンプ容器に係る。
【０００２】
【従来の技術】
例えば、国際公開番号Ｗ０９２／０８６５７号の泡放出用ポンプ容器が知られている。該容器は、上部を大径の空気シリンダに、下部を小径の液体シリンダに、それぞれ形成したシリンダ部材を、空気シリンダ上端面を蓋体で密閉させて容器体内へ垂設固定すると共に、上記両シリンダ内へ嵌合させた大小両径ピストンから大小両径ステムを、小径ステム上部を大径ステム内へ嵌着させかつ大径ステムを蓋体に貫通させて起立し、大径ステム上端にノズル付き押下げヘッドを嵌合した作動部材を上方付勢させて設け、付勢に抗して押下げされた状態で押下げヘッド一部を蓋体一部へ螺合可能に設けたものである。尚該螺合は、作動部材が上方へ起立すると輸送時の包装が嵩張ることとなるため、その作動部材を下限まで押下げてその包装を小形化するためで、使用の際は作動部材の上下動で液体シリンダ内へ液体が、また空気シリンダ内へ外気がそれぞれに設けた吸込み弁を通って流入し、またそれ等両シリンダ内の液体および空気が、液体は小径ステム上端の吐出弁を通って、また空気は大小両ステム間に設けた通路を通って、更に大径ステム上端上方の吐出路部分内へ嵌着させた発泡部材を通過することで混合し、発泡してノズルから放出するよう設けたものである。
【０００３】
【発明が解決しようとする課題】
上記従来の容器は、ヘッド押下げと略同時に小径ステム上端部内の吐出弁と押下げヘッドから垂下する嵌合筒内発泡部材との間に形成される混合室内へ、小径ステム内を通る液体と大小両ステム間を通る空気とが流入するが、当初混合室内へ入る空気は圧縮が充分になされていないため、混合室内へ入る液体量に比べて空気量が不足し、そのため当初放出される泡はその発泡が不完全となる欠点があった。また、作動部材を上方付勢するコイルスプリングが液体シリンダへ内装させているから、毛染め液等、金属が錆つき易い成分を含む液体を収納すると、コイルスプリング外面が錆つき、かつこの錆によって液体シリンダ内へ吸上げた液体が変色或いは変質することがあった。
【０００４】
請求項１の発明は、ヘッド押下げにより混合室への液体流入に先立って、空気が流入し、液体流入時に充分圧縮された空気が混合室内へ流入して、ヘッド押下げ当初から液体量に見合う空気量を有する発泡を得られるように、かつ作動部材を上方付勢するコイルスプリングを空気シリンダへ内装させることで、コイルスプリングが錆ないようにして、収納液体の変色、変質を阻止できるよう設けた。
【０００５】
請求項２の発明は、請求項１の目的に加えて、容器体口頸部に嵌合させた装着筒外面へ、ヘッドを覆うキャップを螺合できるよう設けた。
【０００６】
【課題を解決するための手段】
第１の手段として、容器体１口頸部２に嵌合させた装着筒２０で固定させて、上半を大径シリンダ４、下半を小径シリンダ５としかつこれ等両シリンダをフランジ状壁６で連結したシリンダ部材３を、容器体１内上部へ垂下し、また小径シリンダ５内から上方付勢されて起立する、下端を小径筒状ピストン３３とするステム３１の上部外面に、ノズル付きヘッド３７から垂下するステム嵌合筒３９を嵌着して作動部材３０となし、上記ステム３１の中間部外面に付設した第１外向きフランジ状壁３４下面と上記フランジ状壁６上面との間に介在させたコイルスプリング３５によって作動部材３０を上方付勢し、また、上記ステム嵌合筒３９の下部内面に上端部外面を気密に嵌合させかつ上記第１外向きフランジ状壁３４の内周部上面へ下端を気密に係合させて、ステム３１上部外面へ摺動筒４３を上下動自在に嵌合させると共に、該摺動筒から突出する、第１外気吸込み弁６３付き第２外向きフランジ状壁４５外周に、上記大径シリンダ４内面に嵌合する大径筒状ピストン４４を付設して大径ピストン４２となし、また上記小径シリンダ５の底部内から起立する、下端を吸込み弁体８２とする棒状部材８０の上部をステム３１内へ、該ステムとの摩擦係合で該ステムと共に上下動自在に嵌合させ、更にステム３１の上部内面に吐出弁３６を設け、かつステム嵌合筒３９の上部内面へ発泡部材５０を嵌着させ、該発泡部材と吐出弁３６間に形成した混合室５７内と大径ピストン４２下方の大径シリンダ４内とを、ステム３１とステム嵌合筒３９および摺動筒４３との間に設けた空気路５５で連通させ、更に小径シリンダ５の底部内面に設けた吸込み弁座１３から容器体内底部へ吸上げパイプ１５を垂下し、作動部材３０が上限まで押上げられた状態で、上記棒状部材８０の下端部外面に付設した複数係合片８１上面が、小径シリンダ５の下部内面に固着させた係止筒１２下端へ係合し、かつ小径シリンダ５底部の吸込み弁座１３と上記吸込み弁体８２との間の間隔よりも、大径ピストン４２の第２外向きフランジ状壁４５内周部上面とステム嵌合筒３９下端面との間の間隙を小とした。
第２の手段として、上記構成とした泡放出用ポンプ容器において、装着筒２０の外面に螺子溝を周設した。
【０００７】
【発明の実施の形態】
１は口頸部２を起立する容器体である。
３はシリンダ部材であり、該シリンダ部材は、上半を空気用の大径シリンダ４、下半を液体用の小径シリンダ５として、それ等両シリンダをフランジ状壁部６で連設し、また、大径シリンダ４上端に付設した外向きフランジ７の内周部に環状溝８を、かつ該環状溝の底部に複数の第１外気吸込み孔９を、それぞれ穿設し、上記フランジ状壁部６内周部に上面開口の凹溝１０を周設している。更に、上記小径シリンダ５の下部内面には、上端部内面に突部を周設した係止筒１２を固着させ、該係止筒下方の小径シリンダ部分下部に下方小径テ−パ状の吸込み弁座１３を設け、該吸込み弁座の吸込み弁孔１３ａと連通して小径シリンダ５下端からパイプ嵌合筒１４を垂設し、該パイプ嵌合筒内へ上端部を嵌合させて容器体底部へ吸上げパイプ１５を垂下している。
【０００８】
２０は装着筒であり、該装着筒は、口頸部２外面へ螺合させた周壁２１を頂壁２２周縁から垂設すると共に、該頂壁の外周部下面と口頸部２上端面との間で上記シリンダ部材３の外向きフランジ７を挟持させ、また、頂壁２２中央部を開口してその開口周縁から内面に外気吸入溝を縦設した案内筒２３を垂下し、更に、上記頂壁２２の外周部を残して該頂壁内方部分に隆出する起立筒２４の下端から補助筒２５を垂下し、更に頂壁２２外周部から垂下した短筒を上記大径シリンダ４の環状溝８内へ外気吸入用の間隙を残して挿入させ、また更に、上記周壁２１の上部外面にキャップ螺合用の螺子溝を周設している。
【０００９】
上記シリンダ部材３内からは作動部材３０を起立する。該作動部材は、コイルスプリング３５により上方付勢させて、上記小径シリンダ５内へ嵌合させた小径筒状ピストン３３からステム３１を起立し、該ステムの上端部外面へヘッド３７のステム嵌合筒３９を嵌着させ、かつ該ステム嵌合筒直ぐ下方のステム部分外面へ大径ピストン４２を小ストローク上下動自在に嵌合させたものであり、当該作動部材を構成する各部分について以下更に詳述する。
【００１０】
ステム３１は下部を内外二重筒状として内方側の筒体３２下端に小径筒状ピストン３３を付設している。またステム３１の中間部には、内周部上面に上向き周溝を穿設した第１外向きフランジ状壁３４を付設し、該第１外向きフランジ状壁下面と上記大径シリンダ４の凹溝１０底壁上面との間に、作動部材３０を上方付勢する金属製のコイルスプリング３５を介在させている。更にステム３１の上部内には、該ステムの上部内面から内向きフランジを介して起立する筒状弁座と、該弁座に着座する玉弁とで吐出弁３６を形成し、その玉弁は合成樹脂、セラミック等、金属以外の材料で形成する。
【００１１】
ヘッド３７は、頂壁３８外周部から内外二重筒状にステム嵌合筒３９を垂下して、その下部を既述装着筒２０の案内筒２３内へ摺動可能に挿入させ、かつステム嵌合筒３９の内方筒部３９ａ下部を大内径部として、該大内径部上方の内方筒部部分下半へステム３１上部を嵌着させ、また該ステム嵌着部分内面に複数の第１高圧空気流出溝４０を縦設し、該溝上端をステム３１上端面によりも上方へ設け、更に、ステム嵌合筒３９の上端内面に前端を開口させて頂壁３８下面にノズル４１を横設し、該ノズルを前方へ延長形成している。図示例ではステム嵌合筒３９を二重筒で形成したが一重でもよい。
【００１２】
大径ピストン４２は、ステム３１の上部外面に摺動可能に嵌合させた摺動筒４３と、大径シリンダ４の上端部内面に嵌合させた大径筒状ピストン４４との各中間部に、摺動筒４３側が高く、大径筒状ピストン４４側が低い、階段付きの第２外向きフランジ状壁４５上下両端をそれぞれ連結して形成し、上記摺動筒４３上端部は肉薄弾性部となし、その上部を上記ステム嵌合筒３９下部の大内径部内面へ気密に圧接させている。また上記第２外向きフランジ状壁４５の内周部上面から、摺動筒４３との間に小間隙をおいて係合筒４６を起立し、該係合筒下端が囲む第２外向きフランジ状壁部分に第２外気吸込み孔４７を複数穿設している。当該大径ピストンは、図１が示すように、既述第１外向きフランジ状壁３４内周部の上向き周溝内へ摺動筒４３下端が嵌合したときを下限とし、また図２が示すように、ステム嵌合筒３９の内方筒部３９ａ下端が上記摺動筒４３と係合筒４７との間へ気密に嵌合して上記第２外気吸込み孔４７を密閉したときを上限として、小ストロークだけ、ステム３１に対して上下動するよう形成し、更に摺動筒４３が摺動するステム３１の外面部分に複数の第２高圧空気流出溝４８を穿設し、図１が示すように摺動筒４３が下限に位置する状態では、摺動筒４３下端が第２外向きフランジ状壁４５部分へ気密に当接して、第２高圧空気流出溝４８下端と大径シリンダ４内との連通を遮断させている。
【００１３】
５０は発泡部材であり、該発泡部材は、上部をステム嵌合筒３９上部内へ、かつ下部を小径部としてステム３１の上部内面へ、それぞれ嵌着させた発泡筒５１を有し、該発泡筒の上半内面へ、上端面に発泡ネット５２を張設した小筒５３，５３を上下に重ねて嵌合させている。また小径部外面には第３高圧空気流出溝５４を縦設し、該溝と既述第１，第２高圧空気流出溝４０，４８とで、大径ピストン４２下方の大径シリンダ４内と後述混合室５７とを連通する空気路５５を形成している。更に発泡筒５１の小径部下端からは内向きフランジを介して阻止片５６を垂下し、既述吐出弁３６を通過した液体により玉弁が押し上げられて内向きフランジのフランジ孔が閉塞されることがないよう形成し、更に、その内向きフランジと吐出弁３６との間に、吐出弁を通過した液体と、上記空気路５５を通って流入する高圧空気との混合室５７を設ける。発泡筒５１は必ずしも必要ではなく、小筒５３を直接ステム嵌合筒３９上部内へ嵌合させてもよい。
【００１４】
上記大径ピストン４２の摺動筒４３下部外面には、第１外気吸込み弁体６０を嵌合させる。該弁体は上記摺動筒４３の下部外面へ嵌着させた短筒６１下端から斜め上外方へ肉薄の弾性外向きフランジ状壁６２を突出し、その上端部を上記大径ピストン４２の第２外向きフランジ状壁４５の中間部下面へ圧接させて第１外気吸込み弁６３を形成している。
【００１５】
７０は第２外気吸込み弁体であり、該第２外気吸込み弁体は、既述装着筒２０の補助筒２５外面に上部を嵌着させた基筒部７１の下端部外面から上外方へ弾性逆スカート状部７２を突出して、その上端部を既述大径シリンダ４の上端内面へ圧接させて第２外気吸込み弁７３を形成し、容器体内が液体減少により負圧化すると、弾性逆スカート状部７２を押し広げ、かつ大径シリンダ４上端面と既述装着筒２０の頂壁２２下面との間、環状溝８および第１外気吸込み孔９を通って、外気が容器体内へ流入して負圧状態を解消するよう形成している。
【００１６】
上記小径シリンダ５内底部からは棒状部材８０を起立している。該棒状部材は、既述ステム３１から吊り下げしてその下端部外面に複数付設した係合片８１を既述係止筒１２下端に係合させ、また棒状部材８０下端は吸込み弁体８２となし、該棒状部材下降時に、その弁体が既述小径シリンダ５底部の吸込み弁座１３に着座して吸込み弁孔１３ａを閉塞するよう形成している。棒状部材８０上端部は弾性大径部８３として、該弾性大径部をステム３１下部の筒体３２上部内面で強制摺動可能に抱持させている。よって、作動部材３０下降時に、ステム３１と共に棒状部材８０が下降して、その下端が吸込み弁孔１３ａを閉塞すると、棒状部材８０が停止して作動部材３０のみが下降し、また作動部材上昇の際は、始めステム３１と共に棒状部材８０も上昇するが、係合片８１上面が係止筒１２下端面へ係合すると棒状部材８０は停止し、以後作動部材３０だけが上昇する。
【００１７】
９０はキャップであり、頂壁周縁から垂設した周壁部下部を既述装着筒２０の起立筒２４外面へ嵌合させている。当該キャップは、周壁部を大径化して既述装着筒２０の周壁２１上部外面へ螺合させるよう形成してもよい。
【００１８】
図１が示す状態では、小径シリンダ５底部の吸込み弁座１３と棒状部材８０下端の吸込み弁体８２との間、および大径ピストン４２の第２外向きフランジ状壁４５上面とヘッド３７から垂下するステム嵌合筒３９下端面との間のそれぞれに大小の間隙があいているので、該状態からヘッド３７を押下げると、大径ピストン４２、シリンダ部材３に対してヘッド３７、ステム３１、棒状部材８０が下降して、大径ピストン４２の摺動筒４３下端がステム３１の第１外向きフランジ状壁３４上面から離れ、大径シリンダ４から混合室５７へ至る空気路５５が開き、次いでステム嵌合筒３９下端が大径シリンダ４の第２外向きフランジ状壁４５へ接するため、大径ピストン４２がヘッド３７等と共にシリンダ部材３に対して下降し、そのため大径シリンダ４内空気が加圧されて、高圧空気が混合室５７へ流入を開始し、続いて棒状部材８０下端の吸込み弁体８２が小径シリンダ５底部の吸込み弁座１３へ密着して吸込み弁孔１３ａを密閉し、更に続いて下端を小径筒状ピストン３３とするステム３１が棒状部材８０に対して下降するため、小径シリンダ５およびステム３１内液体が加圧され、吐出弁３６が開き、液体が混合室５７へ入って空気と混合し、かつ発泡部材５０を通過してノズル４１から泡となって放出されることとなる。
尚材料限定がない各部材は合成樹脂材により適宜成形する。
【００１９】
【発明の効果】
本発明は上記構成とするものであり、請求項１の発明の場合は、小径シリンダ５底部に形成した吸込み弁座１３と、その小径シリンダ５の底部内から起立して上部をステム３１内へ、該ステムとの摩擦係合でステム３１と共に上下動自在に嵌合させた棒状部材８０下端の吸込み弁体８２との間隙よりも、大径ピストン４２の第２外向きフランジ状壁４５内周部上面とヘッド３７から垂下するステム嵌合筒３９下端面との間の間隙を小としたから、ヘッド３７押下により、ステム嵌合筒３９下端が大径ピストン４２の第２外向きフランジ状壁４５上面へ接して、大径ピストン４２を押下げ、そのため大径シリンダ内空気が加圧されて、高圧空気が空気路５５を通って混合室５７内への流入を開始した後、棒状部材８０の吸込み弁体８２が小径シリンダ５の吸込み弁座１３へ密着し、次いで小径筒状ピストン３３が小径シリンダ５に対して下降することとなり、このようにして加圧空気流入開始後に、液体が混合室５７内へ流入するから、ヘッド押下げの当初においても空気量と液体量との混合比を適正とすることができ、従来のように液体量に対して空気量が不足して発泡が不完全となることがない。また、ステム３１の中間部外面に第１外向きフランジ状壁３４を付設し、該第１外向きフランジ状壁下面と大径シリンダ４のフランジ状壁６上面との間に作動部材３０を上方付勢するコイルスプリング３５を介在させたから、該コイルスプリングに収納液体が触れて錆つくことがなく、よって、従来のようにコイルスプリング外面についた錆で収納液体が変色或いは変質する不都合がない。
【００２０】
請求項２の発明の場合は、請求項１の効果を有し、かつ装着筒２０外面に螺子溝を周設したから、キャップ９０の周壁部下部内面を装着筒２０外面へ螺合させることで、キャップ９０を容易に着脱できるよう形成することができる。
【図面の簡単な説明】
【図１】本発明容器の一実施形態の縦断面図である。
【図２】同実施形態を作動部材を押下げた状態で示す縦断面図である。
【符号の説明】
３…シリンダ部材２０…装着筒３０…作動部材
３７…ヘッド４２…大径ピストン５０…発泡部材[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, a cylinder member having a large-diameter cylinder for air in the upper half and a small-diameter cylinder for liquid in the lower half is vertically installed in a container body, and a large-diameter and small-diameter cylindrical piston is inserted into the large and small cylinders. The present invention relates to a foam discharging pump container in which an operating member is erected from inside a cylinder by fitting the same.
[0002]
[Prior art]
For example, a foam release pump container disclosed in International Publication No. WO92 / 08657 is known. In the container, the upper cylinder is formed in a large-diameter air cylinder, and the lower cylinder is formed in a small-diameter liquid cylinder. A large- and small-diameter stem is fitted from the large- and small-diameter piston fitted into the cylinder, the small-diameter stem upper part is fitted into the large-diameter stem and the large-diameter stem penetrates the lid, and stands up. The actuating member fitted with the push-down head is provided by being urged upward, and a part of the push-down head is provided so as to be screwable with a part of the lid in a state where the push-down head is pushed down against the bias. . Note that this screwing is to reduce the size of the packaging by pushing down the operating member to the lower limit because the packaging during transportation becomes bulky when the operating member rises upward. With the movement, liquid flows into the liquid cylinder and outside air flows into the air cylinder through the suction valves provided therein, and the liquid and air in both cylinders flow through the discharge valve at the upper end of the small diameter stem. Further, the air is mixed by passing through a passage provided between the large and small stems and further through a foaming member fitted into a discharge passage portion above the upper end of the large-diameter stem, foams and is discharged from the nozzle. It is provided as follows.
[0003]
[Problems to be solved by the invention]
The above-mentioned conventional container is provided with a liquid passing through the small-diameter stem into a mixing chamber formed between the discharge valve in the upper end of the small-diameter stem and the foaming member in the fitting cylinder that hangs down from the press-down head substantially simultaneously with the depression of the head. Although air passing between the large and small stems flows in, the air initially entering the mixing chamber is not sufficiently compressed, so the amount of air is insufficient compared to the amount of liquid entering the mixing chamber. Had the disadvantage that the foaming was incomplete. In addition, since the coil spring that urges the operating member upward is housed in the liquid cylinder, when a liquid containing a component that easily rusts the metal, such as hair dyeing liquid, is stored, the outer surface of the coil spring rusts and this rust causes The liquid sucked into the liquid cylinder may be discolored or deteriorated.
[0004]
According to the first aspect of the present invention, prior to the liquid flowing into the mixing chamber due to the head depression, air flows in, and when the liquid flows in, the air sufficiently compressed flows into the mixing chamber, and the liquid volume is reduced from the beginning of the head depression. By disposing a coil spring that urges the operating member upward in the air cylinder so as to obtain a foam having an appropriate amount of air, it is possible to prevent the coil spring from rusting and prevent discoloration and deterioration of the stored liquid. Provided.
[0005]
According to the invention of claim 2, in addition to the object of claim 1, a cap for covering the head is provided so that it can be screwed into the outer surface of the mounting cylinder fitted to the mouth and neck of the container body.
[0006]
[Means for Solving the Problems]
As a first means, the upper half is fixed to a large-diameter cylinder 4 and the lower half is fixed to a small-diameter cylinder 5 by being fixed with a mounting cylinder 20 fitted to the container body 1 mouth and neck 2, and these two cylinders are flanged walls. The cylinder member 3 connected by 6 is hung down to the upper part inside the container body 1 and a nozzle is provided on the upper outer surface of a stem 31 having a small-diameter cylindrical piston 33 at the lower end, which is urged upward from the small-diameter cylinder 5 to stand. An actuating member 30 is formed by fitting a stem fitting tube 39 hanging down from the head 37, and between the lower surface of the first outward flange-like wall 34 attached to the outer surface of the intermediate portion of the stem 31 and the upper surface of the flange-like wall 6 The operating member 30 is urged upward by a coil spring 35 interposed therebetween, and the outer surface of the upper end portion is airtightly fitted to the lower inner surface of the stem fitting tube 39, and the inner surface of the first outward flange-shaped wall 34 is formed. Lower edge to the top of the periphery The outer peripheral surface of the second outward flange-shaped wall 45 with the first outside air suction valve 63 protruding from the sliding cylinder while closely engaging the sliding cylinder 43 with the upper outer surface of the stem 31 so as to be vertically movable. A large-diameter cylindrical piston 44 fitted to the inner surface of the large-diameter cylinder 4 is attached to form a large-diameter piston 42, and a rod-like member that rises from the bottom of the small-diameter cylinder 5 and has a lower end serving as a suction valve body 82. The upper part of the member 80 is fitted into the stem 31 so as to be able to move up and down together with the stem by frictional engagement with the stem. Further, the discharge valve 36 is provided on the inner surface of the upper part of the stem 31. The foam member 50 is fitted to the inner surface, and the inside of the mixing chamber 57 formed between the foam member and the discharge valve 36 and the inside of the large-diameter cylinder 4 below the large-diameter piston 42 are passed through the stem 31, the stem fitting cylinder 39, and the slide. Air passage provided between moving cylinder 43 5, the suction pipe 15 is suspended from the suction valve seat 13 provided on the inner surface of the bottom of the small-diameter cylinder 5 to the bottom of the container, and the operating member 30 is pushed up to the upper limit. The upper surface of the plurality of engaging pieces 81 attached to the outer surface of the lower end portion engages with the lower end of the locking cylinder 12 fixed to the lower inner surface of the small diameter cylinder 5, and the suction valve seat 13 at the bottom of the small diameter cylinder 5 and the suction valve body 82 The gap between the upper surface of the inner peripheral portion of the second outward flanged wall 45 of the large-diameter piston 42 and the lower end surface of the stem fitting cylinder 39 is made smaller than the space between the two.
As a second means, a screw groove is provided around the outer surface of the mounting cylinder 20 in the foam discharging pump container having the above-described configuration.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Reference numeral 1 denotes a container body for standing the mouth and neck 2.
Reference numeral 3 denotes a cylinder member. The cylinder member has an upper half as a large-diameter cylinder 4 for air, a lower half as a small-diameter cylinder 5 for liquid, and these two cylinders are connected by a flange-like wall portion 6. An annular groove 8 is formed in an inner peripheral portion of an outward flange 7 provided at an upper end of the large-diameter cylinder 4, and a plurality of first outside air suction holes 9 are formed in a bottom portion of the annular groove. 6, a concave groove 10 having an upper surface opening is provided on the inner peripheral portion. Further, on the lower inner surface of the small-diameter cylinder 5, a locking cylinder 12 having a protruding portion provided on the inner surface of the upper end portion is fixed, and a lower small-diameter tapered suction valve is provided below the small-diameter cylinder portion below the locking cylinder. A seat 13 is provided, a pipe fitting tube 14 is vertically provided from the lower end of the small diameter cylinder 5 in communication with the suction valve hole 13a of the suction valve seat, and an upper end portion is fitted into the pipe fitting tube so that a container body bottom portion is provided. The suction pipe 15 is suspended.
[0008]
Reference numeral 20 denotes a mounting cylinder. The mounting cylinder has a peripheral wall 21 screwed to the outer surface of the mouth and neck portion 2 hangs from a peripheral edge of a top wall 22, and a lower surface of an outer peripheral portion of the top wall and an upper end surface of the mouth and neck portion 2. And a guide tube 23 having an opening at the center of the top wall 22 and a vertical outside air suction groove formed on the inner surface from the opening periphery to hang down. The auxiliary cylinder 25 is hung down from the lower end of the upright cylinder 24 protruding to the inner part of the top wall 22 while leaving the outer circumference of the top wall 22. The outer groove 21 is inserted into the annular groove 8 while leaving a gap for suctioning outside air, and a screw groove for screwing a cap is provided around the upper outer surface of the peripheral wall 21.
[0009]
The operating member 30 stands up from the inside of the cylinder member 3. The operating member is urged upward by a coil spring 35 to erect the stem 31 from the small-diameter cylindrical piston 33 fitted into the small-diameter cylinder 5 and fit the stem 37 of the head 37 to the outer surface of the upper end of the stem. The cylinder 39 is fitted, and the large-diameter piston 42 is fitted to the outer surface of the stem portion immediately below the stem fitting tube so as to be able to move up and down by a small stroke. Each part constituting the operating member will be further described below. It will be described in detail.
[0010]
The stem 31 has a lower inner and outer double cylindrical shape, and a small-diameter cylindrical piston 33 is attached to the lower end of the inner cylindrical body 32. A middle portion of the stem 31 is provided with a first outward flange-like wall 34 in which an upward circumferential groove is formed in the upper surface of the inner peripheral portion, and a lower surface of the first outward flange-like wall and a concave portion of the large-diameter cylinder 4 are provided. A metal coil spring 35 for urging the operating member 30 upward is interposed between the groove 10 and the bottom wall upper surface. Further, in the upper part of the stem 31, a discharge valve 36 is formed by a cylindrical valve seat rising from an upper inner surface of the stem via an inward flange and a ball valve seated on the valve seat. It is formed of a material other than metal, such as synthetic resin and ceramic.
[0011]
The head 37 has a stem fitting tube 39 hanging down from the outer peripheral portion of the top wall 38 in an inner / outer double cylindrical shape, and a lower portion thereof is slidably inserted into the guide tube 23 of the above-described mounting tube 20, and the stem fitting is performed. With the lower portion of the inner cylinder portion 39a of the joint tube 39 as the large inner diameter portion, the upper portion of the stem 31 is fitted to the lower half of the inner cylinder portion above the large inner diameter portion, and a plurality of first inner surfaces are fitted to the inner surface of the stem fitting portion. A high-pressure air outflow groove 40 is provided vertically, the upper end of the groove is provided above the upper end surface of the stem 31, and a front end is opened at the inner surface of the upper end of the stem fitting cylinder 39, and the nozzle 41 is provided horizontally on the lower surface of the top wall 38. The nozzle is formed so as to extend forward. In the illustrated example, the stem fitting cylinder 39 is formed as a double cylinder, but may be a single cylinder.
[0012]
The large-diameter piston 42 is an intermediate portion between a sliding cylinder 43 slidably fitted to the upper outer surface of the stem 31 and a large-diameter cylindrical piston 44 fitted to the upper inner surface of the large-diameter cylinder 4. A stepped second outward flange-shaped wall 45 is formed by connecting the upper and lower ends of a stepped second outward flange-shaped wall 45 with the sliding cylinder 43 side being high and the large-diameter cylindrical piston 44 side being low. The upper part is air-tightly pressed against the inner surface of the large-diameter portion below the stem fitting cylinder 39. Further, the engaging cylinder 46 is erected from the upper surface of the inner peripheral portion of the second outward flange-like wall 45 with a small gap between the sliding cylinder 43 and the second outward flange surrounded by the lower end of the engaging cylinder. A plurality of second outside air suction holes 47 are formed in the wall. As shown in FIG. 1, the large-diameter piston has a lower limit when the lower end of the sliding cylinder 43 is fitted into an upward circumferential groove of the inner peripheral portion of the first outward flange-shaped wall 34 described above. As shown in the figure, the upper limit is set when the lower end of the inner cylindrical portion 39a of the stem fitting tube 39 is airtightly fitted between the sliding tube 43 and the engaging tube 47 to seal the second outside air suction hole 47. As shown in FIG. 1, a plurality of second high-pressure air outflow grooves 48 are formed in the outer surface portion of the stem 31 on which the sliding cylinder 43 slides by a small stroke. As shown in the figure, when the sliding cylinder 43 is located at the lower limit, the lower end of the sliding cylinder 43 air-tightly contacts the second outward flanged wall 45, and the lower end of the second high-pressure air outflow groove 48 and the large-diameter cylinder 4 Communication with the inside is cut off.
[0013]
Reference numeral 50 denotes a foaming member. The foaming member has a foaming tube 51 fitted into the upper portion of the stem fitting tube 39 at the upper portion and into the upper inner surface of the stem 31 with the lower portion as the small diameter portion. Small cylinders 53, 53 each having a foamed net 52 stretched on the upper end surface thereof are fitted to the upper half inner surface of the cylinder in a vertically overlapping manner. A third high-pressure air outflow groove 54 is vertically provided on the outer surface of the small-diameter portion, and the third high-pressure air outflow groove 40 and the first and second high-pressure air outflow grooves 40 and 48 are provided between the large-diameter cylinder 4 and the large-diameter cylinder 4. An air passage 55 communicating with a mixing chamber 57 described later is formed. Further, the blocking piece 56 hangs down from the lower end of the small diameter portion of the foaming cylinder 51 via an inward flange, and the ball valve is pushed up by the liquid that has passed through the discharge valve 36 described above, so that the flange hole of the inward flange is closed. Further, a mixing chamber 57 is provided between the inward flange and the discharge valve 36 for mixing the liquid that has passed through the discharge valve and the high-pressure air that flows through the air passage 55. The foam cylinder 51 is not always necessary, and the small cylinder 53 may be directly fitted into the upper part of the stem fitting cylinder 39.
[0014]
The first outside air suction valve body 60 is fitted to the outer surface of the lower part of the sliding cylinder 43 of the large diameter piston 42. The valve body projects a thin elastic outward flange-like wall 62 diagonally upward and outward from the lower end of the short cylinder 61 fitted to the lower outer surface of the sliding cylinder 43, and the upper end of the wall projects from the lower end of the large-diameter piston 42. (2) The first outside air suction valve 63 is formed by being pressed against the lower surface of the intermediate portion of the outward flange-shaped wall 45.
[0015]
Reference numeral 70 denotes a second outside air suction valve body. The second outside air suction valve body extends upward and outward from the lower end outer surface of the base cylinder portion 71 whose upper part is fitted to the outer surface of the auxiliary cylinder 25 of the mounting cylinder 20 described above. When the elastic inverted skirt-shaped portion 72 is protruded and the upper end thereof is pressed against the inner surface of the upper end of the large-diameter cylinder 4 to form the second outside air suction valve 73, when the pressure in the container is reduced to a negative pressure due to a decrease in liquid, the elastic inverted skirt-shaped portion 72 is elastically inverted. The outside air flows into the container through the annular groove 8 and the first outside air suction hole 9 between the upper end surface of the large-diameter cylinder 4 and the lower surface of the top wall 22 of the above-described mounting tube 20 by pushing out the skirt-shaped portion 72. The negative pressure state is thereby eliminated.
[0016]
A rod-like member 80 stands upright from the inner bottom of the small-diameter cylinder 5. The rod-shaped member is suspended from the stem 31 described above, and a plurality of engaging pieces 81 provided on the outer surface of the lower end thereof are engaged with the lower end of the above-described locking cylinder 12, and the lower end of the rod-shaped member 80 is connected to the suction valve body 82. The valve body is formed so as to be seated on the suction valve seat 13 at the bottom of the small-diameter cylinder 5 and close the suction valve hole 13a when the rod-shaped member is lowered. The upper end of the rod-shaped member 80 is an elastic large-diameter portion 83 which holds the elastic large-diameter portion on the inner surface of the upper part of the cylindrical body 32 below the stem 31 so as to be slidable. Therefore, when the operating member 30 is lowered, the rod-shaped member 80 is lowered together with the stem 31 and when the lower end of the rod-shaped member 80 closes the suction valve hole 13a, the rod-shaped member 80 stops and only the operating member 30 is lowered. At this time, the rod-shaped member 80 rises together with the stem 31 at first, but when the upper surface of the engaging piece 81 engages with the lower end surface of the locking cylinder 12, the rod-shaped member 80 stops, and thereafter only the operating member 30 rises.
[0017]
Reference numeral 90 denotes a cap, and a lower portion of the peripheral wall portion, which is vertically provided from a peripheral edge of the top wall, is fitted to the outer surface of the upright cylinder 24 of the mounting cylinder 20 described above. The cap may be formed so that the diameter of the peripheral wall is increased and the cap is screwed to the upper outer surface of the peripheral wall 21 of the mounting cylinder 20 described above.
[0018]
1 shows a state between the suction valve seat 13 at the bottom of the small-diameter cylinder 5 and the suction valve body 82 at the lower end of the rod-shaped member 80, as well as from the upper surface of the second outward flange-like wall 45 of the large-diameter piston 42 and the head 37. There are large and small gaps between the lower end surface of the stem fitting cylinder 39 and the lower end of the stem 37. When the head 37 is pushed down from this state, the head 37, the stem 31, The rod-shaped member 80 descends, the lower end of the sliding cylinder 43 of the large-diameter piston 42 separates from the upper surface of the first outward flange-shaped wall 34 of the stem 31, and the air passage 55 from the large-diameter cylinder 4 to the mixing chamber 57 opens, Next, since the lower end of the stem fitting cylinder 39 contacts the second outward flanged wall 45 of the large-diameter cylinder 4, the large-diameter piston 42 descends with the head 37 and the like with respect to the cylinder member 3. The air in the cylinder 4 is pressurized, and the high-pressure air starts flowing into the mixing chamber 57. Subsequently, the suction valve body 82 at the lower end of the rod-shaped member 80 comes into close contact with the suction valve seat 13 at the bottom of the small-diameter cylinder 5, and the suction valve hole is formed. Since the stem 31 having a small diameter cylindrical piston 33 at its lower end descends with respect to the rod-shaped member 80, the liquid in the small diameter cylinder 5 and the stem 31 is pressurized, the discharge valve 36 is opened, and Enters the mixing chamber 57, mixes with the air, passes through the foaming member 50, and is released from the nozzle 41 as bubbles.
Each member having no material limitation is appropriately formed of a synthetic resin material.
[0019]
【The invention's effect】
The present invention is configured as described above. In the case of the first aspect of the invention, the suction valve seat 13 formed at the bottom of the small-diameter cylinder 5, and the upper part of the small-diameter cylinder 5 stands up from the bottom into the stem 31. The inner circumference of the second outward flange-like wall 45 of the large-diameter piston 42 is larger than the gap between the lower end of the rod-shaped member 80 and the suction valve body 82, which is vertically movably fitted together with the stem 31 by frictional engagement with the stem. Since the gap between the upper surface of the portion and the lower end surface of the stem fitting tube 39 hanging down from the head 37 is reduced, the lower end of the stem fitting tube 39 causes the lower end of the stem fitting tube 39 to become the second outward flange-like wall of the large-diameter piston 42. 45, the large-diameter piston 42 is pressed down, so that the air in the large-diameter cylinder is pressurized, and the high-pressure air starts flowing into the mixing chamber 57 through the air passage 55. Suction valve body 82 has a small diameter Then, the small-diameter cylindrical piston 33 descends with respect to the small-diameter cylinder 5, and the liquid flows into the mixing chamber 57 after the start of the pressurized air flow. In addition, the mixing ratio between the amount of air and the amount of liquid can be made appropriate even at the beginning of the head depression, so that the amount of air does not become insufficient with respect to the amount of liquid and foaming does not become incomplete as in the related art. A first outward flange-like wall 34 is attached to the outer surface of the intermediate portion of the stem 31, and the operating member 30 is moved upward between the lower surface of the first outward flange-like wall and the upper surface of the flange-like wall 6 of the large-diameter cylinder 4. Since the energizing coil spring 35 is interposed, the stored liquid does not touch the coil spring and does not rust. Therefore, there is no inconvenience that the stored liquid is discolored or deteriorated by the rust on the outer surface of the coil spring as in the related art.
[0020]
In the case of the invention of claim 2, the effect of claim 1 is obtained, and a screw groove is provided around the outer surface of the mounting cylinder 20, so that the lower inner surface of the peripheral wall of the cap 90 is screwed to the outer surface of the mounting cylinder 20. The cap 90 can be formed so that it can be easily attached and detached.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an embodiment of the container of the present invention.
FIG. 2 is a longitudinal sectional view showing the same embodiment in a state where an operation member is pushed down.
[Explanation of symbols]
3 ... Cylinder member 20 ... Mounting cylinder 30 ... Operation member 37 ... Head 42 ... Large-diameter piston 50 ... Foam member

Claims

A cylinder member fixed with a mounting cylinder 20 fitted to the container body 1 mouth and neck portion 2, the upper half being a large-diameter cylinder 4, the lower half being a small-diameter cylinder 5, and these two cylinders being connected by a flange-like wall 6. 3 is suspended from the head 37 with a nozzle on the upper outer surface of a stem 31 having a small-diameter cylindrical piston 33 at the lower end, which is suspended upward from the inside of the small-diameter cylinder 5. A coil spring fitted with a fitting cylinder 39 to form the operating member 30 and interposed between the lower surface of the first outward flange-shaped wall 34 attached to the outer surface of the intermediate portion of the stem 31 and the upper surface of the flange-shaped wall 6 The operating member 30 is urged upward by 35, and the outer surface of the upper end portion is airtightly fitted to the lower inner surface of the stem fitting tube 39, and the lower end is formed on the upper surface of the inner peripheral portion of the first outward flanged wall 34. Airtight engagement, The sliding cylinder 43 is fitted to the outer surface of the upper part of the tem 31 so as to be movable up and down, and the large-diameter cylinder 4 is mounted on the outer periphery of the second outward flanged wall 45 with the first outside air suction valve 63 protruding from the sliding cylinder. A large-diameter cylindrical piston 44 fitted to the inner surface is attached to form a large-diameter piston 42, and an upper part of a rod-shaped member 80, which stands from the bottom of the small-diameter cylinder 5 and has a lower end as a suction valve body 82, is a stem 31. The upper end of the stem 31 is provided with a discharge valve 36, and the foaming member 50 is inserted into the upper inner surface of the stem fitting tube 39. Between the stem 31 and the stem fitting cylinder 39 and the sliding cylinder 43 between the mixing chamber 57 formed between the foam member and the discharge valve 36 and the large-diameter cylinder 4 below the large-diameter piston 42. Communication with the air path 55 The suction pipe 15 is suspended from the suction valve seat 13 provided on the inner surface of the bottom of the small-diameter cylinder 5 to the bottom of the container, and is attached to the outer surface of the lower end of the rod-shaped member 80 in a state where the operating member 30 is pushed up to the upper limit. The upper surface of the plurality of engaging pieces 81 is engaged with the lower end of the locking cylinder 12 fixed to the lower inner surface of the small-diameter cylinder 5, and the distance between the suction valve seat 13 at the bottom of the small-diameter cylinder 5 and the suction valve body 82 is determined. Also, the gap between the upper surface of the inner peripheral portion of the second outward flange-shaped wall 45 of the large diameter piston 42 and the lower end surface of the stem fitting cylinder 39 is reduced.

2. The foam discharging pump container according to claim 1, wherein a screw groove is provided around the outer surface of the mounting cylinder.