JP3916936B2

JP3916936B2 - Pump pressing head

Info

Publication number: JP3916936B2
Application number: JP2001366743A
Authority: JP
Inventors: 和仁桑原; 水嶋　　博; 孝之後藤
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 2001-02-28
Filing date: 2001-11-30
Publication date: 2007-05-23
Anticipated expiration: 2021-11-30
Also published as: JP2002326044A

Description

【０００１】
【発明の属する技術分野】
本発明はポンプの押下ヘッドに関し、詳しくは、液噴出後の液切れが良く、ヘッド内での液詰まり等がなく、しかも液噴出の際の押し下げが容易に行えるポンプの押下ヘッドに関する。
【０００２】
【従来の技術】
ポンプの押下ヘッドとして、上方付勢状態で押し込み可能に突設したステムの上端に嵌着して使用するものが知られている。これらは押し込みにより装着した容器体内の液をステムを介して噴出口より噴出する如く構成したものであり、一般的な押下ヘッドでは、ステムに嵌着させる縦筒と、該縦筒上部に基端を開口して先端の噴出口に連通する横筒とを備えている。また、この様な単純構成のものを改良し、噴出口を閉塞するように弾性体で付勢された弁部材を備え、押下時に噴出口が開放状態となる如く構成したものも提案されている（特開平９−１５５２５４号公報）。
【０００３】
この押下ヘッドは、ポンプのステムに嵌着して使用されるもので、下端を開口した有頂筒状のカバー内に於いて、ステムに嵌着した装着筒上端にステム内と連通する横筒を延設し、横筒内にコイルスプリングにより前方付勢された弁部材を配置し、その先端を周壁前面に開口した噴出口に圧接して閉塞している。また、頂壁裏面より周壁と同心円状に垂設したスカート部の後部上部には、横筒後部より突出する弁部材後端部を挟持するかたちで舌片を弾性揺動可能に画成しており、舌片内面下部には突起を突設している。そして、ヘッドを押し下げた際に、突起がポンプの後部周縁部上面に当接して舌片の上部が後方へ弾性的に傾斜変形され、それに伴って弁部材が後方へ移行し、噴出口が開口する如く構成している。
【０００４】
【発明が解決しようとする課題】
上記従来のヘッドは、非使用時に噴出口を常時閉塞しているため、その内部の収納液が固化したりする不都合がないものであるが、液を噴出させる際のヘッドの押下げが固くなり、押下げ難くなる傾向がある。また、弁部材の操作を上記した如きヘッドに設けた舌片とポンプの一部とで構成しているため、ヘッド自体及び装着するポンプの形態に制限が著しく、汎用性に乏しいという問題点がある。
【０００５】
本発明は上記した点に鑑みなされたもので、常時安定した液の噴出を行えるとともに、液切れが良く、噴出口の密閉性にも優れ、しかも、ヘッドの押下げを容易に行えるポンプの噴出ヘッドを提案するものである。また、どの様なポンプに対しても使用可能で、且つ長期の使用にも充分安定した液の噴出を行えるポンプの噴出ヘッドを提案するものである。更に、極力部材数を減らし、その結果、製造が容易でコストの低減が図れるポンプの噴出ヘッドを提案する。
【０００６】
【課題を解決するための手段】
本請求項１発明の押下ヘッドは、上記課題を解決するため、上方付勢状態で押込み可能にステム２を起立したポンプに装着する押下ヘッドであって、ステム２上端部に嵌着させた装着筒７を頂板８下面より垂設するとともに、ステム２内と連通する摺動筒９を頂板８上方へ立設した装着筒部材３と、摺動筒９外周に摺動下降可能に嵌合させたシリンダ11上方に、先端に噴出口12を開口した弁室Ａを備えるとともに、装着筒部材に対して押し下げ可能に設けた本体４と、弁室Ａ内周に後部外周を摺動可能に嵌合させるとともに、前方付勢状態で噴出口12を閉塞し、且つ、シリンダ内と連通する連絡口19より噴出口12に至る流路を画成してなる弁部材５と、弁部材５後端部に上端を連係させるとともに、下端部を上記頂板８上面に当接係止させ、且つ、装着筒部材に対する本体の押下時に弁部材を後方へ引き出す如く揺動可能に枢着した梃部材６とを備え、ステム２に対する本体の押下抗力がステム自体の押下抗力より小であることを特徴とするポンプの押下ヘッドとして構成した。
【０００７】
また、請求項２発明の押下ヘッドは、上記弁部材５が、外周より後方へ延設したスカート状部20後端縁より折り返した逆スカート状部21を延設するとともに、逆スカート状部21外周縁を弁室Ａ内後部に摺動可能に嵌合させてなる弁部材である請求項１記載のポンプの押下ヘッドとして構成した。
【０００８】
また、請求項３発明の押下ヘッドは、上記弁部材５に代えて、弁室Ａ内周後端部に液密に嵌着した嵌合筒部35をフランジ状弾性壁部36を介して外周より延設するとともに、弾性壁部36による前方付勢力で噴出口12を閉塞し、且つ、シリンダ内と連通する連絡口19より噴出口12に至る流路を画成してなる柔軟で弾力性に富む材質で形成された弁部材5Aを設けてなる請求項１記載のポンプの押下ヘッドとして構成した。
【０００９】
また、請求項４発明の押下ヘッドは、上記弁部材５に代えて、弁室Ａ内周後端部に液密に嵌着した嵌合筒部35をフランジ状弾性壁部36を介して先端閉塞の筒部41外周より延設してなる柔軟で弾力性に富む材質で形成された弾性材39と、上記筒部41内に前部を嵌着固定して後端部を後方へ突設した剛性ある材質で形成した芯材40とからなり、弾性壁部36による前方付勢力で噴出口12を閉塞し、且つ、シリンダ内と連通する連絡口19より噴出口12に至る流路を画成してなる弁部材5Bを設けてなる請求項１記載のポンプの押下ヘッド。
【００１０】
また、請求項５発明の押下ヘッドは、上記筒部材３と、本体４とに、互いに上下動可能且つ回動不能に構成した廻り止め機構を設けてなる請求項１乃至請求項４のいずれかに記載のポンプの押下ヘッド。
【発明の実施の形態】
以下、本発明の実施例の形態を図面を参照して説明する。
【００１１】
本発明の押下ヘッド１は、ポンプのステム２上端に嵌着して使用する。装着するポンプの形態は、ステムを押し下げることよりポンプ内の液がステムより噴出する如く構成したものであれば採用でき、例えば、シリンダとピストンとを備えた一般的なポンプ構造を備えたもの、或いはエアゾールタイプのもの等を採用できる。
【００１２】
本発明に於ける押下ヘッド１は、装着筒部材３と、本体４と、弁部材５と、梃部材６とを備えている。
【００１３】
装着筒部材３は、ステム２の外周上端部に嵌合させた装着筒７を頂板８裏面より垂設するとともに、頂板８中央にはステム２内と連通する摺動筒９を立設している。更に、頂板８周縁部からは案内筒10を垂設している。
【００１４】
本体４は、ステム２に装着筒部材３を介して押下げ可能に連結したもので、摺動筒９外周に摺動下降可能に嵌合させたシリンダ11の上方に、先端に噴出口12を開口した弁室Ａを備え、装着筒部材３に対して押下可能に設けている。図示例では、周壁13a 上端縁より頂壁13b を延設してなる下端開口の筒状をなすカバー部13を備え、該カバー部13内の頂壁13b 裏面前部に、後部に隙間Ｂをあけて弁室Ａを設け、弁室Ａ下面よりシリンダ11を垂設している。
【００１５】
弁室Ａは、頂壁13b 裏面前部に頂壁と一部を共有して一体に形成するとともに、周壁13a 前部に前面を開口し、後壁14a 中央に窓孔15を穿設した横筒14と、横筒14の先端部に嵌着して先端に噴出口12を開口したノズル筒16と、横筒14内後部に嵌着させて弁部材５の後述する摺動部分が摺動可能なシリンダ部17を形成するシリンダ筒18とで画成している。
【００１６】
弁部材５は、弁室Ａ内周に後部外周を摺動可能に嵌合させるとともに、前方付勢状態で噴出口12を閉塞している。また、弁室Ａ内にシリンダ11内と連通する連絡口19を設けている。図示例では、横棒状をなし、先端を噴出口12に圧接して閉塞するとともに、後端を窓孔15より突出させ、また、外周前後方向中間部より後方へスカート状部20を延設するとともに、スカート状部20後端縁より折り返した逆スカート状部21の外周縁をシリンダ部17内周に摺動可能に嵌合させている。これにより、シリンダ11内から連絡口19を介して噴出口12に至る液流路を画成している。また、シリンダ筒18の後壁前面と、スカート状部20の分岐部分とに介在させたコイルスプリング22により前方へ付勢している。更に、後端部を窓孔15より突設し、突出部分に梃部材係合用の環状凹部23を凹設している。
【００１７】
梃部材６は、弁部材５後端部に上端を連係させるとともに、下端部を上記頂板８上面に当接係止させており、また、装着筒部材に対する本体の押下時に弁部材を後方へ引き出す如く揺動可能に枢着している。
【００１８】
図示例に於ける梃部材６は、上端部を弁部材５の後端部に連係した垂直板部24下端部より前方へ下る二股の傾斜板部25を延設するとともに、各傾斜板部25の下端部を摺動筒９両側の頂板８上面に当接係止させている。本実施例に於ける梃部材６と弁部材５との連係は、垂直板部24の上端部中央に設けた切欠部26に弁部材５の上記環状凹部23を嵌合させている。更に具体的には、垂直板部24後面上端部に正面視矩形状の凹部27を設け、該凹部27と連通する切欠部26を穿設している。
【００１９】
また、屈折部分両側に突設した枢着軸28を、それぞれ両側の軸受29に回動可能に嵌合させている。本実施例に於ける軸受29は、横筒14直下に嵌着させた取付板30の下面後部より所定間隔をあけて一対垂設したもので、それぞれ内側面下端より下方が広いテーパ状の導入凹部を介して軸受凹部31を凹設している。また、取付板30は、シリンダ11を嵌着させる嵌合孔と、梃部材６の垂直板部24を揺動可能に挿通する窓孔とを備え、周縁部下面を本体周壁13a 内周に突設した係合突条32上に乗越え係合させており、また、周縁部に設けた切欠部33を本体周壁13a 所定位置に突設した係止リブ34に係合させて回動を防止させている。尚、軸受は本実施例の如く本体と別体に設けたものに限らず、図４に示す如く、本体と一体に設けた軸受であっても良く、要は、梃部材６を上記した如き状態に揺動可能に枢着したものであれば良い。
【００２０】
そして、コイルスプリング22により前方付勢された弁部材５により垂直板部24上部の連係部分を常時前方へ付勢させており、本体４の押し下げにより、装着筒部材３の頂板８が傾斜板部25を押し上げて梃部材６を回動させ、コイルスプリング22の前方付勢力に抗して弁部材５を後方へ引き出す如く構成している。
【００２１】
本発明では、この様な押下ヘッドに於いて、ステム２に対する本体４の押下抗力がステム自体の押下抗力より小になる様に構成している。この様に構成するために、基本的には装着するポンプのステムを上方付勢させるための弾性材よりも、弁部材５を前方付勢させるための弾性材の弾発力を小さく選択すれば良く、その他摺動筒とシリンダとの摩擦力，梃部材の揺動時の摩擦力等を考慮してこれらを選択すれば良い。
【００２２】
上記の如く構成した押下ヘッド１は、図１の状態からカバー部13を押し下げると、ステム２自体の押下抗力の方が本体４のステム２に対する押下抗力より大きいため、最初ステム２は下がらず、装着筒部材３に対して本体４が下降する。この際、梃部材６の下端部が装着筒部材３の頂板８上面に押し上げられて枢着軸28を中心に回動し、その上端部が後方へ回動して弁部材５をコイルスプリング22の弾発力に抗して後方へ移行させ、噴出口12が開く。次いでステム２が下降し、該ステムの下降によりポンプ内の液がステム２よりシリンダ11を通り、連絡口19から流路を介して噴出口12より外部へ噴出する。
【００２３】
次にカバー部13の押圧を解除すると、最初ステムの上方付勢力によりヘッドが上昇する。この際、例えばカバー部13上面を押圧した手が離れないうちにステムの上昇が行われ、噴出口12は開いたままの状態で行われる。従って、この時点で弁室Ａ内は負圧状態となる。次いで、手を離す余地ができ、コイルスプリング22の弾発力により弁部材５が前方へ移行して噴出口12を閉塞し、それに伴い梃部材６により本体４を装着筒部材３に対して上方へ押上げ、元の状態に戻る。
【００２４】
図４は本発明の他の実施例を示す。本実施例に於ける押下ヘッド１は、図１の実施例に於いて、軸受29を本体４と一体に設けた例を示す。本実施例では取付板30及び軸受29に代えて、本体４の頂壁13b 後部所定位置に間隔をあけて縦長の軸受29を垂設し、該軸受29の軸受凹部31に枢着軸28を回動可能に嵌合させている。その他の構成は実質的に図１の実施例と同様であるため説明を省略する。
【００２５】
図５は本発明の更に他の実施例を示すもので、本実施例に於ける押下ヘッド１は、図１の実施例に於いて、弁部材５に代えて弁部材5Aを設けている。
【００２６】
弁部材5Aは全体をエラストマー等の柔軟で弾力性に富む材質で形成したもので、弁室Ａ内周後端部に液密に嵌着した嵌合筒部35をフランジ状弾性壁部36を介して外周より延設するとともに、弾性壁部36の前方付勢力で噴出口12を閉塞し、且つ、シリンダ11内と連通する連絡口19より噴出口12に至る流路を画成している。
【００２７】
また、この場合もステム２に対する本体４の押下抗力がステム自体の押下抗力より小になる様に構成しており、その様に構成するために、基本的には装着するポンプのステムを上方付勢させるための弾性材よりも、弁部材5Aを前方付勢させるための弾性壁部36の弾性復元力を小さく選択すれば良く、その他梃部材の揺動時の摩擦力等を考慮してこれらを選択すれば良い。
【００２８】
本実施例の場合には、図１の実施例に於けるシリンダ筒18を省き、上記横筒14と、ノズル筒16とで弁室Ａを画成しており、横筒14の内周後端部に嵌合筒部35を液密に嵌着固定している。また、前方付勢力をフランジ状弾性壁部36により付与しているため、コイルスプリングを無くしている。後端部の構成は図１の実施例と同様である。
【００２９】
また、本実施例では、上記筒部材３と、本体４とに、互いに上下動可能且つ回動不能に構成した廻り止め機構を設けている。
【００３０】
図示例に於ける廻り止め機構は、本体周壁13a 内面に縦突条37を縦設し、また、装着筒部材３の案内筒10に縦突条37が上下動可能に嵌合する縦凹溝38を横設して構成している。これらの縦突条37及び縦凹溝38はそれぞれ一箇所設けても或いは複数箇所設けても良く、図示例では、前部と左右の三箇所に縦突条37を、前後左右の四箇所に縦突条38を設けている。その他の部分は実質的に実施例１と同様であるため説明を省略する。尚、上記廻り止め機構は、上記図１の実施例や後述する図６の実施例にも応用できる。
【００３１】
この様な弁部材5Aを用いた押下ヘッド１は、図５の状態からカバー部13を押し下げると、図１の実施例と同様に装着筒部材３に対して本体４が下降し、同様に梃部材６の上端部が後方へ回動して弁部材5Aをフランジ状弾性壁部36の弾発力に抗して後方へ移行させ、噴出口12が開きポンプ内の液が噴出口12より外部へ噴出する。
【００３２】
次にカバー部13の押圧を解除すると、同様に噴出口12が開いたままの状態でヘッドが上昇し、次いで、手を離す余地ができた際に弾性壁部36の弾性復元力により弁部材5Aが前方へ移行して噴出口12を閉塞し、それに伴い梃部材６により本体４を装着筒部材３に対して上方へ押上げ、元の状態に戻る。
【００３３】
図６は本発明の更に他の実施例を示すもので、本実施例に於ける押下ヘッド１は、図１の実施例に於いて、弁部材５に代えて弁部材5Bを設けている。
【００３４】
弁部材5Bは、エラストマー等の柔軟で弾力性に富む材質で形成した弾性材39と、合成樹脂等の剛性ある材質で形成した芯材40とで構成している。
【００３５】
弾性材39は、弁室Ａ内周後端部に液密に嵌着した嵌合筒部35をフランジ状弾性壁部36を介して先端閉塞の筒部41外周より延設して構成しており、芯材40は、筒部41内に前部を嵌着固定して後端部を後方へ突設して構成している。また、弾性壁部36の前方付勢力で噴出口12を閉塞し、且つ、シリンダ11内と連通する連絡口19より噴出口12に至る流路を画成している。
【００３６】
芯材40の筒部41内への固定は、抜け出しを防止できれば種々の方法を採用でき、例えば、接着材による接着、溶着、或いは図示例の如く、筒部41内周面と芯材40外周面との間に凹凸の係合手段を設けても良い。図示例では、芯材40の先端外周に突条42を周設し、また、筒部41内周先端部に凹溝43を周設して、突条42を凹溝43に嵌着させている。この場合の芯材40の筒部41への嵌合は、弾性材39の弾力を利用して芯材40を筒部41内に強制的に嵌合することにより行うことができるが、インサート成形により形成することも可能である。また、前者の場合には、芯材40の長手方向に沿って空気置換用の溝を横設するとより嵌着が行い易く、また、後者の場合でも、溝44内に樹脂が充填されるため、相互の廻り止めを確実に防止できる効果がある。
【００３７】
本実施例の場合も図５の実施例と同様にシリンダ筒18を省き、上記横筒14と、ノズル筒16とで弁室Ａを画成しており、横筒14の内周後端部に嵌合筒部35を液密に嵌着固定している。また、同様にコイルスプリングを無くしている。更に、上記廻り止め手段を設けている。その他の部分の構成及びその作用も実質的に図５の実施例と同様であるため、説明を省略する。
【００３８】
尚、上記各部材は特に断りが無い限り主として合成樹脂により形成され、必要に応じて、金属，エラストマー等を併用して形成することができる。
【００３９】
【発明の効果】
以上説明した如く本発明の押下ヘッドは、液噴出後の液切れが良く、ヘッド内での液詰まり、固化等の虞がなく、しかも噴出口が閉塞されているにも拘わらず押し下げが固くなることもなく容易に押し下げ噴出することができるものである。また、ポンプの形態等に左右されずに使用できるため、汎用性に優れ、多くの種類のポンプに適用できるものである。更に、梃部材により弁部材を開閉させるため、耐久性に優れ長期に亘って常時安定した操作を行えるものである。
【００４０】
また、請求項２発明のヘッドでは、弁部材の摺動部分が上下方向の撓みに対して安定な前後の摺動を行えるものであり、梃部材により弁部材を後方へ移行させる際に若干上下方向の変移があっても充分に対応して充分な気密性を保持することができるものである。
【００４１】
また、請求項３発明のヘッドでは、部材数を極力少なくすることができ、コスト削減のメリットがあるとともに、組み立ての簡素化を図れる利点を兼ね備えている。
【００４２】
また、請求項４発明のヘッドでは、同様に部材数の削減、組み立ての簡素化を図れるとともに、梃部材６との連係部分に剛性を持たしているため、その部分に変形等が生じる虞がなく、より円滑な作動を行える利点を兼ね備えている。
【００４３】
また、請求項５発明のヘッドでは、装着筒部材３に対してヘッド１が回動しないため、装着筒部材上面に連係させている梃部材６にねじれ等の不都合な力がかかることがなく、より円滑な作動を行える利点を兼ね備える。
【図面の簡単な説明】
【図１】本発明の一実施例を示す縦断面図である。
【図２】同実施例の押し下げ状態を示す縦断面図である。
【図３】同実施例の梃部材の斜視図である。
【図４】本発明の他の実施例を示す縦断面図である。
【図５】本発明の更に他の実施例を示す縦断面図である。
【図６】本発明の更に他の実施例を示す縦断面図である。
【符号の説明】
２…ステム，３…装着筒部材，４…本体，５…弁部材，６…梃部材，
７…装着筒，８…頂板，９…摺動筒，11…シリンダ，12…噴出口，
19…連絡口，20…スカート状部，21…逆スカート状部，35…嵌合筒部，
36…弾性壁部，39…弾性材，40…芯材，41…筒部，Ａ…弁室，[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pump pressing head, and more particularly, to a pump pressing head that can be easily pressed down during liquid ejection without being clogged with liquid in the head and without being clogged.
[0002]
[Prior art]
As a pump pressing head, there is known a pumping head that is used by being fitted to the upper end of a stem protruding so as to be pushed in an upward biased state. These are configured so that the liquid in the container mounted by pushing is ejected from the ejection port via the stem. In a general pressing head, a vertical cylinder fitted to the stem and a base end on the upper part of the vertical cylinder are arranged. And a horizontal tube that communicates with the jet outlet at the tip. Further, there has been proposed an improvement of such a simple configuration, including a valve member urged by an elastic body so as to close the ejection port, and configured so that the ejection port is opened when pressed. (Japanese Patent Laid-Open No. 9-155254).
[0003]
This pressing head is used by being fitted to the stem of the pump, and in a top-like cylindrical cover having an open lower end, a horizontal cylinder communicating with the inside of the stem at the upper end of the mounting cylinder fitted to the stem. The valve member urged forward by a coil spring is disposed in the horizontal cylinder, and the tip of the valve member is pressed against and closed by a jet opening opened in the front surface of the peripheral wall. In addition, a tongue piece is defined so as to be elastically swingable in the form of a valve member rear end protruding from the rear side of the horizontal cylinder at the rear upper part of the skirt part suspended concentrically with the peripheral wall from the top wall rear surface. A projection is provided on the lower part of the inner surface of the tongue piece. When the head is pushed down, the protrusion comes into contact with the upper surface of the rear peripheral edge of the pump, and the upper part of the tongue piece is elastically deformed rearward, and the valve member moves rearward accordingly, and the jet port opens. It is configured as shown.
[0004]
[Problems to be solved by the invention]
Since the conventional head always closes the ejection port when not in use, there is no inconvenience that the liquid contained therein solidifies, but the head is hard to be pressed down when the liquid is ejected. , Tend to be difficult to push down. Further, since the operation of the valve member is constituted by the tongue piece provided on the head as described above and a part of the pump, there is a problem that the head itself and the form of the pump to be mounted are remarkably limited, and the versatility is poor. is there.
[0005]
The present invention has been made in view of the above points, and is capable of ejecting a pump that can always stably eject liquid, has good liquid drainage, has excellent sealing performance at the ejection port, and can easily push down the head. The head is proposed. In addition, the present invention proposes an ejection head for a pump that can be used for any type of pump and that can sufficiently stably eject liquid for long-term use. Further, the present invention proposes a pump ejection head that reduces the number of members as much as possible, and as a result, is easy to manufacture and can reduce costs.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the pressing head according to the first aspect of the present invention is a pressing head that is attached to a pump in which the stem 2 is erected so that it can be pushed in an upward biased state, and is attached to the upper end of the stem 2 The cylinder 7 is suspended from the lower surface of the top plate 8, and the sliding cylinder 9 communicating with the inside of the stem 2 is fitted on the outer periphery of the sliding cylinder 9 so as to be slidably lowered. The cylinder 11 is provided with a valve chamber A having a spout 12 opened at the tip, and a body 4 provided so as to be able to be pushed down with respect to the mounting cylinder member, and a rear outer periphery is slidably fitted on the inner periphery of the valve chamber A. And a valve member 5 that closes the jet port 12 in a forward biased state and defines a flow path from the communication port 19 communicating with the inside of the cylinder to the jet port 12, and a rear end of the valve member 5 The upper end is linked to the upper part, the lower end is brought into contact with and locked to the upper surface of the top plate 8, and And a flange member 6 pivotally mounted so as to swing out so that the valve member is pulled out backward when the main body is pressed against the mounting cylinder member, and the pressing drag of the main body against the stem 2 is smaller than the pressing drag of the stem itself. And configured as a pump pressing head.
[0007]
In the pressing head according to the second aspect of the present invention, the valve member 5 extends the reverse skirt-shaped portion 21 that is turned back from the rear edge of the skirt-shaped portion 20 that extends backward from the outer periphery, and the reverse skirt-shaped portion 21. 2. The pump pressing head according to claim 1, wherein the outer peripheral edge is a valve member slidably fitted to the rear part in the valve chamber A.
[0008]
According to a third aspect of the present invention, there is provided a pressing head having a fitting cylinder portion 35 that is liquid-tightly fitted to the rear end portion of the inner periphery of the valve chamber A, instead of the valve member 5, extending from the outer periphery via a flange-like elastic wall portion 36. In addition, the outlet 12 is closed by the forward urging force of the elastic wall portion 36, and a flow path from the communication port 19 communicating with the inside of the cylinder to the outlet 12 is defined. The pump pressing head according to claim 1, wherein a valve member 5A formed of a material is provided.
[0009]
According to a fourth aspect of the present invention, in the push-down head, instead of the valve member 5, the fitting cylinder portion 35 that is liquid-tightly fitted to the rear end portion of the inner periphery of the valve chamber A is closed through the flange-like elastic wall portion 36. An elastic material 39 formed of a flexible and elastic material extending from the outer periphery of the cylindrical portion 41, and a rigidity in which the front portion is fitted and fixed in the cylindrical portion 41 and the rear end portion protrudes backward. It consists of a core material 40 made of a certain material, closes the jet nozzle 12 by the forward urging force of the elastic wall 36, and defines a flow path from the communication port 19 communicating with the inside of the cylinder to the jet nozzle 12. The pump pressing head according to claim 1, further comprising a valve member (5B).
[0010]
According to a fifth aspect of the present invention, in the pressing head according to any one of the first to fourth aspects, the cylindrical member 3 and the main body 4 are provided with a detent mechanism configured to be movable up and down and non-rotatable. The pressing head of the pump described in 1.
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0011]
The pressing head 1 of the present invention is used by being fitted to the upper end of the pump stem 2. The form of the pump to be installed can be adopted as long as the liquid in the pump is ejected from the stem by pushing down the stem, for example, a pump having a general pump structure including a cylinder and a piston, Or an aerosol type thing etc. are employable.
[0012]
The pressing head 1 according to the present invention includes a mounting cylinder member 3, a main body 4, a valve member 5, and a flange member 6.
[0013]
The mounting cylinder member 3 has a mounting cylinder 7 fitted to the upper end of the outer periphery of the stem 2 suspended from the back surface of the top plate 8, and a sliding cylinder 9 communicating with the inside of the stem 2 is erected at the center of the top plate 8. Yes. Further, a guide tube 10 is suspended from the periphery of the top plate 8.
[0014]
The main body 4 is connected to the stem 2 via a mounting cylinder member 3 so as to be able to be pushed down, and has a spout 12 at the tip above a cylinder 11 fitted to the outer periphery of the sliding cylinder 9 so as to be slidable down. An open valve chamber A is provided and is provided so as to be able to be pressed against the mounting cylinder member 3. In the illustrated example, a cover portion 13 having a cylindrical shape with a lower end opening formed by extending the top wall 13b from the upper end edge of the peripheral wall 13a is provided, and a gap B is formed in the rear portion of the rear surface of the top wall 13b in the cover portion 13. The valve chamber A is opened and the cylinder 11 is suspended from the lower surface of the valve chamber A.
[0015]
The valve chamber A is formed in such a manner that a part of the top wall 13b and a part of the top wall are shared and formed integrally with the front surface of the top wall 13b. A cylinder 14, a nozzle cylinder 16 fitted to the distal end portion of the horizontal cylinder 14 and having an outlet 12 opened at the distal end, and a sliding portion (described later) of the valve member 5 slidably fitted to the rear portion of the horizontal cylinder 14. It is defined by a cylinder 18 that forms a possible cylinder part 17.
[0016]
The valve member 5 has a rear outer periphery slidably fitted to the inner periphery of the valve chamber A, and closes the ejection port 12 in a forward biased state. Further, a communication port 19 communicating with the inside of the cylinder 11 is provided in the valve chamber A. In the illustrated example, it has a horizontal bar shape, the front end is pressed against the ejection port 12 and closed, the rear end protrudes from the window hole 15, and the skirt-shaped portion 20 extends rearward from the middle portion in the front-rear direction. At the same time, the outer peripheral edge of the reverse skirt-shaped portion 21 turned back from the rear edge of the skirt-shaped portion 20 is slidably fitted to the inner periphery of the cylinder portion 17. As a result, a liquid flow path from the inside of the cylinder 11 to the ejection port 12 via the communication port 19 is defined. Further, it is urged forward by a coil spring 22 interposed between the front surface of the rear wall of the cylinder cylinder 18 and the branching portion of the skirt-like portion 20. Further, the rear end portion protrudes from the window hole 15, and the annular recess 23 for engaging the flange member is provided in the protruding portion.
[0017]
The flange member 6 has its upper end linked to the rear end portion of the valve member 5 and has its lower end portion in contact with and locked to the top surface of the top plate 8 and pulls out the valve member rearward when the main body is pressed against the mounting cylinder member. It pivots so that it can swing.
[0018]
In the illustrated example, the eaves member 6 has a bifurcated inclined plate portion 25 extending forward from a lower end portion of the vertical plate portion 24 whose upper end portion is linked to the rear end portion of the valve member 5, and each inclined plate portion 25. Are in contact with and locked to the upper surface of the top plate 8 on both sides of the sliding cylinder 9. In this embodiment, the flange member 6 and the valve member 5 are linked by fitting the annular recess 23 of the valve member 5 into a notch 26 provided at the center of the upper end of the vertical plate 24. More specifically, a concave portion 27 having a rectangular shape in front view is provided at the upper end of the rear surface of the vertical plate portion 24, and a notch portion 26 communicating with the concave portion 27 is formed.
[0019]
Further, pivot shafts 28 projecting on both sides of the refracting portion are fitted to bearings 29 on both sides in a rotatable manner. The bearings 29 in the present embodiment are a pair of hanging from the lower part of the lower surface of the mounting plate 30 that is fitted directly below the horizontal cylinder 14 with a predetermined interval, and each taper-shaped introduction is wider below the lower end of the inner side surface. A bearing recess 31 is provided through the recess. The mounting plate 30 includes a fitting hole for fitting the cylinder 11 and a window hole through which the vertical plate portion 24 of the flange member 6 is swingably inserted. The lower surface of the peripheral portion projects into the inner periphery of the main body peripheral wall 13a. It engages on the engagement protrusion 32 provided, and the notch 33 provided at the peripheral edge is engaged with the locking rib 34 protruding at a predetermined position on the peripheral wall 13a to prevent the rotation. ing. The bearing is not limited to the one provided separately from the main body as in this embodiment, but may be a bearing provided integrally with the main body as shown in FIG. Any device pivotably attached to the state may be used.
[0020]
The valve member 5 urged forward by the coil spring 22 always urges the linkage portion at the upper part of the vertical plate portion 24 forward, and the top plate 8 of the mounting cylinder member 3 is inclined by the depression of the main body 4. 25 is pushed up to rotate the eaves member 6 so that the valve member 5 is pulled out against the forward biasing force of the coil spring 22.
[0021]
In the present invention, in such a pressing head, the pressing force of the main body 4 against the stem 2 is configured to be smaller than the pressing force of the stem itself. For this configuration, basically, if the elastic force of the elastic material for urging the valve member 5 forward is selected smaller than the elastic material for urging the stem of the pump to be mounted upward, In addition, these may be selected in consideration of the frictional force between the sliding cylinder and the cylinder, the frictional force when the saddle member swings, and the like.
[0022]
In the pressing head 1 configured as described above, when the cover portion 13 is pressed down from the state shown in FIG. 1, the pressing force of the stem 2 itself is larger than the pressing force of the main body 4 against the stem 2, so that the stem 2 is not lowered first. The main body 4 is lowered with respect to the mounting cylinder member 3. At this time, the lower end portion of the flange member 6 is pushed up to the upper surface of the top plate 8 of the mounting cylinder member 3 and pivots about the pivot shaft 28, and the upper end portion pivots rearward so that the valve member 5 is coil spring 22. It is moved backward against the resilience of the nozzle, and the spout 12 opens. Next, the stem 2 descends, and as the stem descends, the liquid in the pump passes through the cylinder 11 from the stem 2 and is ejected from the communication port 19 to the outside through the flow outlet 12 through the flow path.
[0023]
Next, when the pressing of the cover portion 13 is released, the head is raised by the upward biasing force of the first stem. At this time, for example, the stem is raised before the hand pressing the upper surface of the cover portion 13 is released, and the ejection port 12 is kept open. Therefore, at this time, the inside of the valve chamber A is in a negative pressure state. Next, there is room for releasing the hand, and the valve member 5 moves forward by the elastic force of the coil spring 22 to close the ejection port 12, and accordingly, the main body 4 is moved upward with respect to the mounting cylinder member 3 by the flange member 6. To return to the original state.
[0024]
FIG. 4 shows another embodiment of the present invention. The pressing head 1 in this embodiment is an example in which the bearing 29 is provided integrally with the main body 4 in the embodiment of FIG. In this embodiment, instead of the mounting plate 30 and the bearing 29, a vertically long bearing 29 is vertically suspended at a predetermined position on the rear portion of the top wall 13 b of the main body 4, and the pivot shaft 28 is attached to the bearing recess 31 of the bearing 29. It is fitted so that it can rotate. The other configuration is substantially the same as that of the embodiment of FIG.
[0025]
FIG. 5 shows still another embodiment of the present invention, and the pressing head 1 in this embodiment is provided with a valve member 5A in place of the valve member 5 in the embodiment of FIG.
[0026]
The entire valve member 5A is formed of a flexible and elastic material such as an elastomer, and a fitting cylinder portion 35 that is liquid-tightly fitted to the inner peripheral rear end portion of the valve chamber A is provided via a flange-like elastic wall portion 36. In addition to extending from the outer periphery, the jet outlet 12 is closed by the forward biasing force of the elastic wall 36, and a flow path from the communication port 19 communicating with the inside of the cylinder 11 to the jet outlet 12 is defined.
[0027]
In this case as well, the pressing force of the main body 4 against the stem 2 is configured to be smaller than the pressing force of the stem itself. The elastic restoring force of the elastic wall portion 36 for biasing the valve member 5A forward may be selected to be smaller than the elastic material for biasing, and other factors such as the frictional force at the time of swinging of the flange member may be considered. Should be selected.
[0028]
In the case of this embodiment, the cylinder cylinder 18 in the embodiment of FIG. 1 is omitted, and the valve cylinder A is defined by the horizontal cylinder 14 and the nozzle cylinder 16, and the inner peripheral rear end of the horizontal cylinder 14. The fitting cylinder part 35 is fixed in a liquid-tight manner. Further, since the front urging force is applied by the flange-like elastic wall portion 36, the coil spring is eliminated. The configuration of the rear end is the same as that of the embodiment of FIG.
[0029]
In the present embodiment, the cylinder member 3 and the main body 4 are provided with a detent mechanism configured to be movable up and down and non-rotatable.
[0030]
The anti-rotation mechanism in the illustrated example has a vertical ridge 37 vertically provided on the inner surface of the peripheral wall 13a of the main body, and a vertical concave groove in which the vertical ridge 37 is fitted to the guide cylinder 10 of the mounting cylinder member 3 so as to be vertically movable. 38 is arranged horizontally. Each of the vertical protrusions 37 and the vertical concave grooves 38 may be provided in one place or a plurality of places, and in the illustrated example, the vertical protrusions 37 are provided at the front part, the left and right parts, and the four parts on the front, rear, left and right parts. A vertical ridge 38 is provided. Since other parts are substantially the same as those of the first embodiment, description thereof is omitted. The anti-rotation mechanism can be applied to the embodiment shown in FIG. 1 and the embodiment shown in FIG.
[0031]
In the push-down head 1 using such a valve member 5A, when the cover portion 13 is pushed down from the state shown in FIG. 5, the main body 4 is lowered with respect to the mounting cylinder member 3 as in the embodiment of FIG. The upper end of the member 6 is rotated rearward to cause the valve member 5A to move rearward against the elastic force of the flange-like elastic wall 36, and the jet 12 opens to allow the liquid in the pump to be discharged from the jet 12 outside. To erupt.
[0032]
Next, when the pressing of the cover portion 13 is released, the head rises in the same manner with the spout 12 still open, and then when there is room for releasing the hand, the valve member is caused by the elastic restoring force of the elastic wall portion 36. 5A moves forward and closes the nozzle 12, and accordingly, the main body 4 is pushed upward with respect to the mounting cylinder member 3 by the flange member 6, and the original state is restored.
[0033]
FIG. 6 shows still another embodiment of the present invention, and the pressing head 1 in this embodiment is provided with a valve member 5B in place of the valve member 5 in the embodiment of FIG.
[0034]
The valve member 5B is composed of an elastic material 39 formed of a flexible and elastic material such as an elastomer, and a core material 40 formed of a rigid material such as a synthetic resin.
[0035]
The elastic member 39 is configured by extending a fitting cylinder part 35 that is liquid-tightly fitted to the inner peripheral rear end part of the valve chamber A from the outer periphery of the cylinder part 41 that is closed at the tip end through a flange-like elastic wall part 36. The core member 40 is configured such that a front portion is fitted and fixed in a cylindrical portion 41 and a rear end portion projects rearward. Further, the ejection port 12 is closed by the forward biasing force of the elastic wall portion 36, and a flow path from the communication port 19 communicating with the inside of the cylinder 11 to the ejection port 12 is defined.
[0036]
Various methods can be used for fixing the core member 40 in the cylindrical portion 41 as long as it can be prevented from coming out. For example, the inner peripheral surface of the cylindrical portion 41 and the outer periphery of the core member 40 can be bonded or welded by an adhesive, or as shown in the illustrated example. An uneven engaging means may be provided between the surface and the surface. In the illustrated example, a protrusion 42 is provided around the outer periphery of the tip of the core member 40, and a groove 43 is provided around the inner periphery of the cylindrical portion 41 so that the protrusion 42 is fitted into the groove 43. Yes. In this case, the core member 40 can be fitted into the cylindrical portion 41 by forcibly fitting the core member 40 into the cylindrical portion 41 by using the elasticity of the elastic member 39, but insert molding. It is also possible to form by. In the former case, it is easier to fit the air replacement groove along the longitudinal direction of the core member 40. In the latter case, the groove 44 is filled with resin. This has the effect of reliably preventing mutual rotation.
[0037]
Also in this embodiment, the cylinder cylinder 18 is omitted as in the embodiment of FIG. 5, and the valve cylinder A is defined by the horizontal cylinder 14 and the nozzle cylinder 16, and is fitted to the inner peripheral rear end of the horizontal cylinder 14. The tube section 35 is fixed in a liquid-tight manner. Similarly, the coil spring is eliminated. Furthermore, the anti-rotation means is provided. Since the configuration and operation of other parts are substantially the same as those of the embodiment of FIG.
[0038]
In addition, each said member is mainly formed with a synthetic resin unless there is particular notice, and can be formed using a metal, an elastomer, etc. together as needed.
[0039]
【The invention's effect】
As described above, the pressing head according to the present invention is good in running out of liquid after jetting liquid, there is no risk of clogging and solidification in the head, and the pressing down becomes hard despite the jet outlet being closed. It can be pushed down and ejected easily. Moreover, since it can be used regardless of the form of the pump, etc., it is excellent in versatility and can be applied to many types of pumps. Further, since the valve member is opened and closed by the eaves member, it is excellent in durability and can always be operated stably over a long period of time.
[0040]
In the head according to the second aspect of the present invention, the sliding portion of the valve member can perform stable front-rear sliding against vertical deflection, and when the valve member is moved rearward by the flange member, Even if there is a change in direction, it is possible to sufficiently respond and maintain sufficient airtightness.
[0041]
Further, the head of the invention of claim 3 has the advantages that the number of members can be reduced as much as possible, and there are advantages of cost reduction and simplification of assembly.
[0042]
In the head according to the fourth aspect of the invention, the number of members can be similarly reduced and the assembly can be simplified, and the portion linked to the flange member 6 has rigidity. And has the advantage of smoother operation.
[0043]
Further, in the head according to the fifth aspect of the invention, since the head 1 does not rotate with respect to the mounting cylinder member 3, an inconvenient force such as twisting is not applied to the flange member 6 linked to the upper surface of the mounting cylinder member. Combines the advantages of smoother operation.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing a pressed state of the embodiment.
FIG. 3 is a perspective view of a flange member of the same embodiment.
FIG. 4 is a longitudinal sectional view showing another embodiment of the present invention.
FIG. 5 is a longitudinal sectional view showing still another embodiment of the present invention.
FIG. 6 is a longitudinal sectional view showing still another embodiment of the present invention.
[Explanation of symbols]
2 ... stem, 3 ... mounting cylinder member, 4 ... main body, 5 ... valve member, 6 ... gutter member,
7 ... Installation cylinder, 8 ... Top plate, 9 ... Sliding cylinder, 11 ... Cylinder, 12 ... Jet port,
19 ... Communication port, 20 ... Skirt-like part, 21 ... Reverse skirt-like part, 35 ... Fitting cylinder part,
36 ... elastic wall part, 39 ... elastic material, 40 ... core material, 41 ... cylindrical part, A ... valve chamber,

Claims

A pressing head for mounting the stem 2 on a standing pump so that it can be pushed in an upward biased state. The mounting cylinder 7 fitted to the upper end of the stem 2 is suspended from the lower surface of the top plate 8 and communicates with the inside of the stem 2. A valve cylinder A having a spout 12 opened at the tip above a mounting cylinder member 3 in which a sliding cylinder 9 is erected above the top plate 8 and a cylinder 11 fitted to the outer periphery of the sliding cylinder 9 so as to be able to slide down. And the body 4 provided so as to be able to be pushed down with respect to the mounting cylinder member, the rear outer periphery is slidably fitted to the inner periphery of the valve chamber A, and the outlet 12 is closed in a forward biased state, and The upper end of the valve member 5 that defines a flow path from the communication port 19 communicating with the inside of the cylinder to the outlet 12 and the rear end of the valve member 5 are linked to the upper surface of the top plate 8. The valve member is pulled out backward when the main body is pressed against the mounting cylinder member. A pump pressing head, comprising: a collar member 6 pivotably attached as described above, wherein the pressing force of the main body against the stem 2 is smaller than the pressing force of the stem itself.

The valve member 5 extends a reverse skirt-like portion 21 folded back from the rear end edge of the skirt-like portion 20 extending rearward from the outer periphery, and slides the outer periphery of the reverse skirt-like portion 21 to the rear portion in the valve chamber A. The pump pressing head according to claim 1, which is a valve member that can be fitted.

Instead of the valve member 5, a fitting cylinder portion 35 that is liquid-tightly fitted to the rear end portion of the inner periphery of the valve chamber A extends from the outer periphery via a flange-like elastic wall portion 36, and is attached to the front by the elastic wall portion 36. Provided with a valve member 5A formed of a flexible and elastic material that closes the jet port 12 by force and defines a flow path from the communication port 19 communicating with the inside of the cylinder to the jet port 12. The pump pressing head according to claim 1.

Instead of the valve member 5, a flexible fitting is formed by extending a fitting cylinder portion 35 that is liquid-tightly fitted to the inner peripheral rear end portion of the valve chamber A from the outer periphery of the cylindrical portion 41 that is closed at the tip end through a flange-like elastic wall portion 36. And an elastic material 39 formed of a highly elastic material, and a core material 40 formed of a rigid material with the front portion fitted and fixed in the cylindrical portion 41 and the rear end portion protruding backward. Further, the valve member 5B is provided, which closes the ejection port 12 with a forward urging force by the elastic wall portion 36 and defines a flow path from the communication port 19 communicating with the inside of the cylinder to the ejection port 12. 1. A pressing head of the pump according to 1.

The pump pressing head according to any one of claims 1 to 4, wherein the cylindrical member 3 and the main body 4 are provided with a detent mechanism configured to be movable up and down and not rotatable relative to each other.