JP2004000834A

JP2004000834A - Push-down head of pump

Info

Publication number: JP2004000834A
Application number: JP2002159337A
Authority: JP
Inventors: Kazuhito Kuwabara; 桑原　和仁; Yoshiyuki Tsunoda; 角田　義幸
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 2002-05-31
Filing date: 2002-05-31
Publication date: 2004-01-08
Anticipated expiration: 2022-05-31
Also published as: JP3942957B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a jetting head of a pump, a push-down head to be mounted to the pump in which a stem 2 is provided upright so as to be pushed in upward energizing state, which is excellent in dripping prevention, easy to be pushed down, composed of a small number of members and reliable to prevent rattling and loosening when moving up and down. <P>SOLUTION: The push-down head of a pump comprises a mounting cylindrical member 3 for upright installing a sliding cylinder 10 communicated with the inside of a stem 2; a body 4 provided with a lateral cylinder 15 above a cylinder 16 fitted to the cylindrical member 3; a valve member 6 for closing a jetting outlet in forward energizing state and defining the flow path from a communication port 19 communicated with the cylinder to the jetting outlet; and a lever member 7 linked with the valve member and having a special structure for opening the valve by pushing down the head. Resistance against pushing-down of the main body is smaller than that of the stem. Engaging plates 12 extended up and down are installed in both sides of the mounting cylindrical member and engaged with the circumferential wall of the main body in such a manner that they can not be turned but move up and down. <P>COPYRIGHT: (C)2004,JPO

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部内に於いて、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、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、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、また、安定した上下動を行えてガタツキやブラツキをより確実に防止でき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８を頂板９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１０を頂板９上方へ立設し、且つ、頂板９両側に於いて上下に延びる係止板１２を延設してなる装着筒部材３と、上記摺動筒１０外周に摺動下降可能に嵌合させたシリンダ１６を、周壁１４ａ前部に前端を開口し且つ周囲にスペースをあけて突設した横筒１５下面より垂設するとともに、周壁１４ａ内面両側を回動不能且つ上下動可能に上記係止板外面に係合させた本体４と、上記横筒１５に嵌着させて先端に噴出口２１を開口させた筒状の噴出口部材５と、上記横筒１５の後壁１５ａ前面より突設したシール筒１８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２１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２１に至る流路を画成してなる弁部材６と、上記横筒後壁１５ａの窓孔１７を介してその後方へ突出した弁部材６後端部に上端を連係させるとともに、下端部を上記頂板９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本体に枢着した梃部材７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８を頂板９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１０を頂板９上方へ立設し、且つ、頂板９両側に於いて上下に延びる係止板１２を延設してなる装着筒部材３と、上記摺動筒１０に摺動下降可能に嵌合させたシリンダ１６を、周壁１４ａ前部に前端を開口し且つ周囲にスペーをあけて突設した横筒１５の下面より垂設するとともに、周壁１４ａ内面両側を回動不能且つ上下動可能に上記係止板１２外面に係合させた本体４と、上記横筒１５内に嵌着させて後部内面をシール部３７に形成するとともに、先端に噴出口２１を開口し、且つ、シール部３７前方に連絡孔３８を穿設してなる筒状の噴出口部材５Ａと、上記シール部３７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２１を閉塞し、且つ、シリンダ１６内と連通する連絡口１９より上記連絡孔３８を介して噴出口２１に至る流路を画成してなる弁部材６と、上記横筒後壁１５ａの窓孔１７を介してその後方へ突出した弁部材６後端部に上端を連係させるとともに、下端部を上記頂板９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本体に枢着した梃部材７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。
【０００８】
【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。
【０００９】
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。
【００１０】
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、噴出口部材５と、弁部材６と、梃部材７とを備えている。
【００１１】
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８を頂板９裏面より垂設するとともに、頂板９中央にはステム２内と連通する摺動筒１０を立設している。更に、頂板９周縁部からは下方へ案内筒１１を垂設している。また、頂板９の両側に於いて上下に延びる係止板１２を延設している。この係止板１２は、本体４のぐらつきを防止する等の目的で設けたもので、図示例では頂板９の下方部分においては案内筒１１の一部として構成しており、外面に二本の係合凹溝１３を縦設している。
【００１２】
本体４は、ステム２に装着筒部材３を介して押し下げ可能に連結したもので、周壁１４ａ上端縁より頂壁１４ｂを延設した下端開口の有頂筒状をなすカバー部１４を有し、また、周壁１４ａ前部に前端を開口した横筒１５を後方へ突設し、更に、横筒１５下面よりシリンダ１６を垂設しており、上記摺動筒１０に摺動下降可能にシリンダ１６を嵌合させて装着している。
【００１３】
上記横筒１５は両側及び後部に梃部材７の上部と係止板１２とが収納できるスペースを設けており、また、後壁１５ａ中央に窓孔１７を穿設し、その周囲の後壁１５ａ前面より前方へシール筒１８を突設し、更に、下部にはシリンダ１６内と連通する連絡口１９を設けている。
【００１４】
また、周壁１４ａ内面両側を回動不能且つ上下動可能に上記係止板１２外面に係合させている。周壁１４ａと係止板１２との係合は上記条件を満たせば種々の構造を採用できるが、図示例では、周壁１４ａ両側に於いて、係止板１２外面の上記係合凹溝１３にそれぞれ係合する各一対の係合突条２０を縦設している。
【００１５】
上記噴出口部材５は、横筒１５に嵌着させて先端に噴出口２１を開口させるもので、横筒１５内前部に後部を液密に嵌着させるとともに、前部をテーパ状に縮径してその先端に噴出口２１を開口している。また、外面より突設した環状突起２２を本体４前面に当接係止させ、内部には周方向複数のリブ２３を突設している。
【００１６】
弁部材６は、上記シール筒１８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２１を閉塞して上記連絡口１９より噴出口２１に至る流路を画成している。
【００１７】
図示例では、横棒状をなし、外周前後方向中間部より後方へスカート状部２４を延設するとともに、スカート状部２４後端縁より折り返した逆スカート状部２５の外周縁をシール筒１８内周に摺動可能に嵌合させている。また、横筒１５の後壁１５ａ前面とスカート状部２４の分岐部分とに介在させたコイルスプリング２６により前方へ付勢して先端を噴出口２１に圧接して閉塞している。また、後端を上記窓孔１７より突出させ、突出部分に梃部材係合用の環状凹部２７を凹設している。これにより、シリンダ１６内から連絡口１９を介して横筒１５内を通り噴出口２１に至る液流路を画成している。
【００１８】
梃部材７は、上記窓孔１７を介してその後方へ突出した弁部材６後端部に上端を連係させるとともに、下端部を上記頂板９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。
【００１９】
図示例に於ける梃部材７は、図４に示す如く、上端部を弁部材６の後端部に連係した垂直板部２８下端部より前方へ下る二股の傾斜板部２９を延設するとともに、各傾斜板部２９の下端部を摺動筒１０両側の頂板９上面に当接係止させている。本実施例に於ける梃部材７と弁部材６との連係は、垂直板部２８の上端部中央に設けた切欠部３０に弁部材６の上記環状凹部２７を嵌合させている。更に具体的には、垂直板部２８後面上端部に正面視矩形状の凹部３１を設け、該凹部３１と連通する切欠部３０を穿設している。
【００２０】
また、屈折部分両側に突設した枢着軸３２を、それぞれ両側の軸受３３に回動可能に嵌合させている。本実施例に於ける軸受３３は、横筒１５直下に嵌着させた取付板３４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を凹設している。また、取付板３４は、シリンダ１６を嵌着させる嵌合孔と、梃部材７の垂直板部２８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１４ａ内周に突設した係合突条３５上に乗越え係合させており、また、本体周壁１４ａ内周に周方向間隔をあけて複数突設した係止突起３６により取付板３４上面を係止している。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、図示しないが、本体と一体に設けた軸受であっても良く、要は、梃部材７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。
【００２１】
そして、コイルスプリング２６により前方付勢された弁部材６により垂直板部２８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９が傾斜板部２９を押し上げて梃部材７を回動させ、コイルスプリング２６の前方付勢力に抗して弁部材６を後方へ引き出す如く構成している。
【００２２】
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６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。
【００２３】
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１４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７の下端部が装着筒部材３の頂板９上面に押し上げられて枢着軸３２を中心に回動し、その上端部が後方へ回動して弁部材６をコイルスプリング２６の弾発力に抗して後方へ移行させ、噴出口２１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１６を通り、連絡口１９から流路を介して噴出口２１より外部へ噴出する。
【００２４】
次にカバー部１４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１４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２１は開いたままの状態で行われる。従って、この時点で横筒１５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２６の弾発力により弁部材６が前方へ移行して噴出口２１を閉塞し、それに伴い梃部材７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。
【００２５】
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、上記シール筒１８を噴出口部材５と一体に形成した例を示す。本実施例に於いて、噴出口部材５Ａは、横筒１５内に嵌着させて後部内面にシール部３７を形成するとともに、先端に噴出口２１を開口し、また、シール部３７前方に周方向複数の連絡孔３８を穿設している。
【００２６】
図示例では、前部外周を横筒１５先端部内面に嵌着させた大外径部３９に形成するとともに、その後方の外周を小外径部４０に形成し、先端部をテーパ状に縮径してその先端に噴出口２１を開口した筒状の噴出口部材５Ａを設け、大外径部３９を横筒１５内面先端部に液密に嵌合させるとともに、横筒後壁１５ａ前面より突設した嵌合筒４１外面に後端部を嵌合させて本体４に装着している。また、図１の実施例と同様のリブ２３及び環状突起２２を設けている。
【００２７】
また、弁部材６は棒状をなすとともに、外周前後方向中間部から前方へ逆スカート部２５ａを突設してシール部３７に液密摺動可能に嵌合させており、逆スカート部２５ａの付け根と横筒後壁１５ａとの間にコイルスプリング２６を介在させて前方へ付勢させている。そして、シリンダ１６内と連通する連絡口１９から横筒１５と噴出口部材５との隙間をとおり、連絡孔３８を介して噴出口２１に連通する如く構成している。他の構成は図１の実施例と同様であり、また、作用も同様であるため説明を省略する。
【００２８】
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。
【００２９】
【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、噴出時の不都合な液の飛び出しを防止でき、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。
【００３０】
また、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。更に、横筒両側のスペースに縦設した係合板と周壁とを回動不能且つ上下動可能に係合させているため、充分な長さの係合幅をとることができ、装着筒部材に対し噴出ヘッドの安定した上下動を行えて噴出ヘッドがガタ付いたりブラ付いたりする等の不都合を防止でき、その結果、シリンダと摺動筒との円滑な作動を行え、ひいては装着したポンプの円滑な作動を行えるものである。
【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】図１のＡ−Ａ線に沿う縦断面図である。
【図３】同実施例のＢ−Ｂ線に沿う縦断面図である。
【図４】本発明の梃部材の斜視図である。
【図５】本発明の他の実施例を示す縦断面図である。
【図６】図５のＣ−Ｃ線に沿う縦断面図である。
【符号の説明】
２…ステム，３…装着筒部材，４…本体，５，５Ａ…噴出口部材，
６…弁部材，７…梃部材，８…装着筒，９…頂板，１０…摺動筒，
１２…係止板，１４ａ…周壁，１５…横筒，１５ａ…後壁，１６…シリンダ，
１７…窓孔，１８…シール筒，１９…連絡口，２１…噴出口，３７…シール部，
３８…連絡孔[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pressing head of a pump, and more particularly, to a pressing head of a pump in which the liquid is easily discharged after the liquid is ejected, there is no liquid clogging in the head, and the pump can be easily pressed down when ejecting the liquid.
[0002]
[Prior art]
2. Description of the Related Art As a pressing head of a pump, there is known a pressing head which is fitted to an upper end of a protruding stem protrudably provided in an upwardly biased state. These are configured such that the liquid in the container body mounted by pushing is ejected from the ejection port through the stem, and in a general press head, a vertical cylinder to be fitted to the stem and a base end on the upper part of the vertical cylinder And a horizontal cylinder communicating with the ejection port at the tip. Further, there has been proposed an improvement of such a simple configuration, which is provided with a valve member urged by an elastic body so as to close the ejection port, so that the ejection port is opened when pressed down. (Japanese Patent Application Laid-Open No. 9-155254).
[0003]
This press head is used by being fitted to the stem of a pump, and a horizontal cylinder that communicates with the inside of the stem at the upper end of the mounting cylinder fitted to the stem in the top cylindrical cover having an open lower end. And a valve member urged forward by a coil spring is disposed in the horizontal cylinder, and the distal end of the valve member is pressed against and closed by an ejection port opened on the front surface of the peripheral wall. In addition, a tongue piece is formed so as to be capable of elastically swinging at a rear upper portion of the skirt portion which is vertically provided concentrically with the peripheral wall from the back surface of the top wall while holding a valve member rear end portion projecting from the horizontal cylinder rear portion. The tongue has a projection protruding below the inner surface. Then, when the head is pushed down, the protrusion comes into contact with the upper surface of the rear peripheral portion of the pump, and the upper portion of the tongue piece is elastically inclined and deformed rearward, whereby the valve member moves rearward, and the ejection opening is opened. It is configured so that
[0004]
[Problems to be solved by the invention]
In the conventional head described above, since the ejection port is always closed when not in use, there is no inconvenience that the stored liquid inside the head is solidified.However, when the liquid is ejected, the head must be pressed down harder. , Tends to be difficult to push down. In addition, since the operation of the valve member is constituted by the tongue piece provided on the head and a part of the pump as described above, the form of the head itself and the pump to be mounted is significantly limited, and the versatility is poor. is there.
[0005]
The present invention has been made in view of the above-described points, and can always stably eject a liquid, has a good drainage, is excellent in sealing property of an ejection port, and can easily press down a head. It can be used for any pump, and can stably eject the liquid sufficiently for long-term use. Furthermore, the number of members is reduced as much as possible. As a result, manufacturing is easy and cost can be reduced. We propose an ejection head for a pump that can perform stable up and down movement and more reliably prevent rattling and blurring.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a pressing head according to the present invention is a pressing head which is mounted on a pump in which a stem is erected so as to be able to be pushed in an upwardly biased state, wherein the mounting cylinder is fitted to an upper end of the stem. 8 is suspended from the lower surface of the top plate 9, a sliding cylinder 10 communicating with the inside of the stem 2 is erected above the top plate 9, and a locking plate 12 extending vertically on both sides of the top plate 9 is extended. Mounting cylinder member 3 and a cylinder 16 fitted to the outer periphery of the sliding cylinder 10 so as to be slidable and descent, the lower surface of a horizontal cylinder 15 having a front end opening at the front of a peripheral wall 14a and projecting with a space around the cylinder. The main body 4, which is vertically suspended and is rotatably and vertically movable on both sides of the inner surface of the peripheral wall 14 a, is fitted to the outer surface of the locking plate, and is fitted to the horizontal cylinder 15 to open the jet port 21 at the tip. Cylindrical spout member 5 and the front surface of rear wall 15a of horizontal tube 15 The outer periphery of the rear portion is slidably fitted to the inner periphery of the protruding seal cylinder 18, the outlet 21 is closed in a forward biased state, and the outlet 21 extends from the communication port 19 communicating with the inside of the cylinder. The upper end is linked to the valve member 6 defining the flow path and the rear end of the valve member 6 projecting rearward through the window hole 17 of the horizontal cylinder rear wall 15a, and the lower end is connected to the top plate 9. And a lever member 7 pivotally attached to the main body so as to abut on the upper surface and swing so that the valve member is pulled backward when the main body is pressed against the mounting cylinder member. It is configured as a pressing head of a pump characterized by being smaller than its own pressing resistance.
[0007]
Further, the pressing head according to the second aspect of the present invention is a pressing head which is mounted on a pump in which the stem 2 is erected so as to be able to be pushed in an upwardly biased state, wherein the mounting cylinder 8 fitted on the upper end of the stem 2 has a lower surface of the top plate 9. A mounting cylinder member 3 that is vertically extended and has a sliding cylinder 10 that communicates with the inside of the stem 2 erected above the top plate 9, and a locking plate 12 that extends vertically on both sides of the top plate 9. And a cylinder 16 fitted to the sliding cylinder 10 so as to be slidable and descent from a lower surface of a horizontal cylinder 15 having a front end opening at a front portion of the peripheral wall 14a and having a space around the cylinder 16 to protrude. A main body 4 in which both sides of the inner surface of the peripheral wall 14a are non-rotatably and vertically movablely engaged with the outer surface of the locking plate 12, and a rear inner surface which is fitted in the horizontal cylinder 15 to form a seal portion 37; The ejection port 21 is opened at the tip and connected to the front of the seal portion 37. A cylindrical jet port member 5A having a hole 38 formed therein is slidably fitted to the inner periphery of the seal portion 37 at the rear outer periphery, and the jet port 21 is closed in a forward biased state, and The valve member 6 defining a flow path from the communication port 19 communicating with the inside of the cylinder 16 to the jet port 21 through the communication hole 38, and the rearward through the window hole 17 of the horizontal cylinder rear wall 15a. The upper end is linked to the rear end of the valve member 6 which protrudes to the bottom, the lower end is abutted and locked on the upper surface of the top plate 9, and the valve member can be swung so as to be pulled out rearward when the main body is pressed against the mounting cylinder member. And a lever 7 pivotally attached to the main body, and the pressing resistance of the main body against the stem 2 is smaller than the pressing resistance of the stem itself.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0009]
The press head 1 of the present invention is used by fitting it to the upper end of the stem 2 of the pump. The form of the pump to be attached can be adopted as long as the liquid in the pump is ejected from the stem by pushing down the stem, and for example, a pump having a general pump structure including a cylinder and a piston, Alternatively, an aerosol type or the like can be adopted.
[0010]
The pressing head 1 according to the present invention includes a mounting cylinder member 3, a main body 4, an ejection port member 5, a valve member 6, and a lever member 7.
[0011]
The mounting cylinder member 3 has a mounting cylinder 8 fitted to the upper end of the outer periphery of the stem 2 suspended from the back surface of the top plate 9, and a sliding cylinder 10 communicating with the inside of the stem 2 is erected at the center of the top plate 9. I have. Further, a guide tube 11 is provided downward from the peripheral edge of the top plate 9. Further, locking plates 12 extending vertically on both sides of the top plate 9 are extended. The locking plate 12 is provided for the purpose of preventing wobble of the main body 4 and the like. In the illustrated example, the locking plate 12 is formed as a part of the guide cylinder 11 below the top plate 9 and has two outer tubes. The engagement groove 13 is provided vertically.
[0012]
The main body 4 is connected to the stem 2 so as to be able to be pushed down through the mounting tubular member 3, and has a cover portion 14 having a top-end cylindrical shape having a lower end opening extending from the upper edge of the peripheral wall 14 a to the top wall 14 b, A horizontal cylinder 15 having a front end opened at the front of the peripheral wall 14a is protruded rearward, and a cylinder 16 is suspended from the lower surface of the horizontal cylinder 15 so that the cylinder 16 can slide down on the sliding cylinder 10. Are fitted and mounted.
[0013]
The horizontal cylinder 15 has a space on both sides and a rear portion in which the upper portion of the lever member 7 and the locking plate 12 can be stored, and a window hole 17 is formed in the center of the rear wall 15a, and the surrounding rear wall 15a is provided. A seal cylinder 18 projects from the front to the front, and a communication port 19 communicating with the inside of the cylinder 16 is provided below.
[0014]
In addition, both sides of the inner surface of the peripheral wall 14a are engaged with the outer surface of the locking plate 12 so as to be non-rotatable and vertically movable. Various structures can be adopted for the engagement between the peripheral wall 14a and the locking plate 12 as long as the above conditions are satisfied. In the illustrated example, the engagement concave grooves 13 on the outer surface of the locking plate 12 are provided on both sides of the peripheral wall 14a. Each pair of engaging projections 20 to be engaged is vertically provided.
[0015]
The jet port member 5 is fitted to the horizontal cylinder 15 to open the jet port 21 at the tip. The rear section is liquid-tightly fitted to the front inside the horizontal cylinder 15 and the front section is tapered. It has a diameter and an opening 21 at its tip. Further, an annular projection 22 projecting from the outer surface is abutted and locked on the front surface of the main body 4, and a plurality of circumferential ribs 23 project inside.
[0016]
The valve member 6 has a rear outer periphery slidably fitted to the inner periphery of the seal cylinder 18 and closes the outlet 21 in a forward biased state to define a flow path from the communication port 19 to the outlet 21. Has formed.
[0017]
In the illustrated example, the skirt 24 is formed to extend rearward from the middle portion in the front-rear direction of the outer periphery in the shape of a horizontal bar, and the outer periphery of the inverted skirt 25 that is folded back from the rear edge of the skirt 24 is placed inside the seal tube 18. It is slidably fitted around the circumference. Further, a coil spring 26 interposed between the front surface of the rear wall 15a of the horizontal cylinder 15 and the branch portion of the skirt portion 24 urges forward to close the tip by pressing the tip against the jet port 21. The rear end protrudes from the window hole 17, and an annular concave portion 27 for lever member engagement is formed in the protruding portion. Thus, a liquid flow path from the inside of the cylinder 16 to the ejection port 21 through the inside of the horizontal cylinder 15 through the communication port 19 is defined.
[0018]
The lever member 7 has an upper end linked to the rear end of the valve member 6 protruding rearward through the window hole 17, and has a lower end abuttingly engaged with the upper surface of the top plate 9. The valve member is pivotably pivoted so as to pull the valve member backward when the main body is pressed against the member.
[0019]
As shown in FIG. 4, the lever member 7 in the illustrated example has a bifurcated inclined plate 29 extending forward from a lower end of a vertical plate 28 linked to a rear end of the valve member 6 at an upper end. The lower end of each inclined plate portion 29 is abutted and locked on the upper surface of the top plate 9 on both sides of the sliding cylinder 10. In the linkage between the lever member 7 and the valve member 6 in the present embodiment, the annular concave portion 27 of the valve member 6 is fitted into a cutout portion 30 provided at the center of the upper end of the vertical plate portion 28. More specifically, a rectangular concave portion 31 as viewed from the front is provided at the upper end of the rear surface of the vertical plate portion 28, and a cutout portion 30 communicating with the concave portion 31 is formed.
[0020]
Further, pivot shafts 32 projecting from both sides of the bending portion are rotatably fitted to bearings 33 on both sides, respectively. The bearing 33 in the present embodiment is a pair of bearings that are vertically suspended at a predetermined interval from the rear portion of the lower surface of the mounting plate 34 fitted directly below the horizontal cylinder 15, and each of the bearings 33 has a tapered shape that is wider than the lower end of the inner surface. The bearing recess is recessed through the recess. The mounting plate 34 includes a fitting hole into which the cylinder 16 is fitted, and a window hole through which the vertical plate portion 28 of the lever member 7 is swingably inserted. The upper surface of the mounting plate 34 is locked by a plurality of locking protrusions 36 provided on the inner peripheral wall 14a of the main body peripheral wall 14a at circumferential intervals with a plurality of protrusions. The bearing is not limited to the one provided separately from the main body as in the present embodiment, but may be a bearing provided integrally with the main body (not shown). The point is that the lever member 7 is brought into the above-described state. Anything can be used as long as it is pivotally attached.
[0021]
Further, the linked portion above the vertical plate portion 28 is constantly urged forward by the valve member 6 urged forward by the coil spring 26. When the main body 4 is pushed down, the top plate 9 of the mounting tubular member 3 is inclined. 29, the lever member 7 is rotated, and the valve member 6 is pulled rearward against the forward biasing force of the coil spring 26.
[0022]
According to the present invention, in such a pressing head, the pressing resistance of the main body 4 against the stem 2 is configured to be smaller than the pressing resistance of the stem itself. In order to configure in this manner, basically, if the elastic force of the elastic material for urging the valve member 6 forward is selected to be smaller than that of the elastic material for urging the stem of the pump to be mounted upward. These may be selected in consideration of the frictional force between the sliding cylinder and the cylinder, the frictional force when the lever member swings, and the like.
[0023]
In the pressing head 1 configured as described above, when the cover portion 14 is pressed down from the state of FIG. 1, since the pressing resistance of the stem 2 itself is larger than the pressing resistance of the main body 4 against the stem 2, the stem 2 does not lower at first. The main body 4 moves down with respect to the mounting cylinder member 3. At this time, the lower end of the lever member 7 is pushed up on the upper surface of the top plate 9 of the mounting tubular member 3 and pivots about the pivot shaft 32, and the upper end pivots rearward to move the valve member 6 to the coil spring 26. Is moved rearward against the resilience of the nozzle, and the spout 21 is opened. Next, the stem 2 is lowered, and the liquid in the pump is ejected from the stem 2 through the cylinder 16 through the communication port 19 to the outside through the outlet 21 through the flow path by the descending of the stem.
[0024]
Next, when the pressing of the cover portion 14 is released, the head is first raised by the upward biasing force of the stem. At this time, for example, the stem is raised before the hand pressing the upper surface of the cover portion 14 is released, and the ejection port 21 is kept open. Therefore, at this point, the inside of the horizontal cylinder 15 is in a negative pressure state. Next, there is room to release the hand, and the valve member 6 moves forward by the elastic force of the coil spring 26 to close the ejection port 21, so that the main body 4 is moved upward with respect to the mounting cylinder member 3 by the lever member 7. To return to the original state.
[0025]
FIG. 4 shows another embodiment of the present invention. The pressing head 1 in this embodiment is an example in which the seal cylinder 18 is formed integrally with the ejection port member 5 in the embodiment of FIG. In the present embodiment, the spout member 5A is fitted into the horizontal tube 15 to form a seal portion 37 on the inner surface of the rear portion. A plurality of communication holes 38 are formed in each direction.
[0026]
In the illustrated example, the outer periphery of the front part is formed in the large outer diameter part 39 fitted to the inner surface of the tip of the horizontal cylinder 15, and the outer periphery behind it is formed in the small outer diameter part 40, and the tip part is tapered. A cylindrical outlet member 5A having a diameter and an opening at the end thereof is provided at the end thereof, and the large outer diameter portion 39 is fitted to the end of the inner surface of the horizontal tube 15 in a liquid-tight manner. The rear end portion is fitted to the outer surface of the fitting tube 41 which is protruded, and is mounted on the main body 4. Further, a rib 23 and an annular projection 22 similar to those in the embodiment of FIG. 1 are provided.
[0027]
The valve member 6 has a rod-like shape, and has a reverse skirt portion 25a protruding forward from a middle portion in the front-rear direction of the outer periphery to fit the seal portion 37 in a liquid-tight slidable manner. A coil spring 26 is interposed between the horizontal cylinder rear wall 15a and the horizontal cylinder rear wall 15a to urge the cylinder forward. The communication port 19 communicates with the inside of the cylinder 16, passes through the gap between the horizontal cylinder 15 and the ejection port member 5, and communicates with the ejection port 21 via the communication hole 38. The other configuration is the same as that of the embodiment of FIG. 1 and the operation is the same, so that the description is omitted.
[0028]
The above members are mainly formed of a synthetic resin unless otherwise specified, and may be formed by using a metal, an elastomer, and the like as needed.
[0029]
【The invention's effect】
As described above, the press head according to the present invention has good liquid shortage after liquid ejection, prevents inadvertent ejection of liquid at the time of ejection, has no risk of liquid clogging and solidification in the head, and has an ejection port. Despite being closed, it can be easily pushed down and ejected without hardening down. Further, since it can be used without being influenced by the form of the pump and the like, it has excellent versatility and can be applied to many types of pumps. Furthermore, since the valve member is opened and closed by the lever member, the durability is excellent and the operation can be constantly performed for a long period of time.
[0030]
In addition, the number of members can be reduced as much as possible, which has the advantage of cost reduction, and also has the advantage of simplifying assembly. Further, since the engagement plate vertically provided in the space on both sides of the horizontal cylinder and the peripheral wall are engaged so as to be non-rotatable and vertically movable, a sufficient length of engagement width can be obtained, and On the other hand, the ejection head can be moved up and down stably to prevent inconveniences such as rattling and shaking of the ejection head. As a result, the cylinder and the sliding cylinder can operate smoothly, and as a result, the installed pump can be smoothly operated. Operation can be performed.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.
FIG. 2 is a longitudinal sectional view taken along line AA of FIG.
FIG. 3 is a longitudinal sectional view taken along line BB of the embodiment.
FIG. 4 is a perspective view of a lever member of the present invention.
FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention.
FIG. 6 is a longitudinal sectional view taken along line CC of FIG. 5;
[Explanation of symbols]
2 ... stem, 3 ... mounting cylinder member, 4 ... body, 5, 5A ... spout member,
6 valve member, 7 lever member, 8 mounting tube, 9 top plate, 10 sliding tube,
12: locking plate, 14a: peripheral wall, 15: horizontal cylinder, 15a: rear wall, 16: cylinder,
17 ... window hole, 18 ... seal cylinder, 19 ... communication port, 21 ... jet port, 37 ... seal part,
38 ... communication hole

Claims

A push head that is mounted on a pump in which the stem 2 is erected so as to be able to be pushed in an upwardly biased state. A mounting cylinder 8 fitted to the upper end of the stem 2 is vertically provided from the lower surface of the top plate 9 and communicates with the inside of the stem 2. A mounting cylinder member 3 having a sliding cylinder 10 that stands up above the top plate 9 and extending vertically with locking plates 12 on both sides of the top plate 9, and slides around the outer periphery of the sliding cylinder 10. The cylinder 16 fitted so as to be able to descend is vertically installed from the lower surface of the horizontal cylinder 15 having a front end opening at the front part of the peripheral wall 14a and protruding with a space around the cylinder 16, and both sides of the inner surface of the peripheral wall 14a are not rotatable and up and down. A main body 4 movably engaged with the outer surface of the locking plate, a cylindrical spout member 5 fitted into the horizontal cylinder 15 and having a spout 21 opened at the tip, and a rear end of the horizontal cylinder 15 The outer periphery of the rear part is slidably fitted on the inner periphery of the seal cylinder 18 protruding from the front surface of the wall 15a. And a valve member 6 that closes the ejection port 21 in a forward biased state and defines a flow path from the communication port 19 communicating with the inside of the cylinder to the ejection port 21; and the horizontal cylinder rear wall 15a. The upper end is linked to the rear end of the valve member 6 projecting rearward through the window hole 17, and the lower end is abutted and locked on the upper surface of the top plate 9; A push head of a pump, comprising: a lever member 7 pivotally attached to the main body so as to swing so that the member can be pulled rearward, wherein the push resistance of the main body against the stem 2 is smaller than the push resistance of the stem itself.

A push head that is mounted on a pump in which the stem 2 is erected so as to be able to be pushed in an upwardly biased state. A mounting cylinder 8 fitted to the upper end of the stem 2 is vertically provided from the lower surface of the top plate 9 and communicates with the inside of the stem 2. A mounting cylinder member 3 having a sliding cylinder 10 standing upright above a top plate 9 and extending vertically extending locking plates 12 on both sides of the top plate 9, and sliding down on the sliding cylinder 10. The cylinder 16 fitted as possible is vertically extended from the lower surface of the horizontal cylinder 15 which has a front end opened at the front of the peripheral wall 14a and is provided with a space around the cylinder 16; The main body 4 movably engaged with the outer surface of the locking plate 12 and the rear inner surface formed in the seal portion 37 by being fitted into the horizontal cylinder 15, the ejection port 21 is opened at the tip, and A cylindrical spout having a communication hole 38 formed in front of the seal portion 37 The material 5A and the inner periphery of the seal portion 37 are slidably fitted to the outer periphery of the rear portion, and the outlet 21 is closed in a forward biased state, and the communication hole 19 is communicated with the inside of the cylinder 16 through the communication hole 19. The upper end is linked to the valve member 6 defining a flow path leading to the jet port 21 via the opening 38 and the rear end of the valve member 6 projecting rearward through the window hole 17 of the horizontal cylinder rear wall 15a. And a lever member 7 pivotally attached to the main body so that the lower end portion abuts and locks on the upper surface of the top plate 9 and swings such that the valve member is pulled rearward when the main body is pressed against the mounting tubular member. A pressing head of a pump, wherein the pressing resistance of the main body against the stem 2 is smaller than the pressing resistance of the stem itself.