JP4145723B2

JP4145723B2 - Liquid jet pump

Info

Publication number: JP4145723B2
Application number: JP2003155897A
Authority: JP
Inventors: 和仁桑原; 孝之後藤
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 2003-05-30
Filing date: 2003-05-30
Publication date: 2008-09-03
Anticipated expiration: 2023-05-30
Also published as: JP2004359238A

Description

【０００１】
【発明の属する技術分野】
本発明は液体噴出ポンプに関し、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、また、液噴出の際の押し下げが容易であり、しかも押下ヘッドの噴出方向を常時容器体に対して所定方向へ向けておくことができる液体噴出ポンプに関する。
【０００２】
【従来の技術】
液体噴出ポンプとして、口頸部に装着キャップを嵌合して容器体に装着するとともに、装着キャップ上方に上方付勢状態で押し込み可能に突出したステムの上端に押下ヘッドを嵌着したものが知られている。また、これらのポンプの押下ヘッドとして、ステム内と連通する摺動筒を立設した装着筒部材と、摺動筒外周に嵌合させたシリンダ筒上方に、先端に噴出口を開口した弁室を備えるとともに、装着筒部材に対して押し下げ可能に設けた本体と、前方付勢状態で噴出口を閉塞し、シリンダ筒内より噴出口に至る流路を画成した弁部材と、弁部材と連繋させてヘッドの押し下げにより開弁させる特殊構成の梃部材とを備えたものが提案されている（例えば、特許文献１参照）。
【０００３】
これらの押下ヘッドを備えた液体噴出ポンプは常時安定した液の噴出を行えるとともに、液きれが良く、噴出口の密閉性に優れ、しかもヘッドの押し下げを容易に行え、また、長期の使用にも安定した液の噴出を行える優れたものである。
【０００４】
【特許文献１】
特開２００２−３２６０４４号公報（第２−５頁，図１）
【０００５】
【発明が解決しようとする課題】
本発明は上記した特殊形態の押下ヘッドを備えたポンプを更に改良したものであって、押下ヘッドを容器体に対して常時所定方向を向かせることができて液の効率の良い噴出を行えるとともに、そのための構造も極めて簡単であり、しかも従来のこの種のポンプが備える、常時安定した液の噴出、液切れの良さ、噴出口の良好な密閉性、ヘッドの容易な押し下げ、耐久性等の効果を併せて発揮することのできる優れた液体噴出ポンプを提案するものである。
【０００６】
第１の手段として、以下の通り構成した。即ち、口頸部２に装着キャップ３を嵌合して容器体４に装着するとともに、装着キャップ３上方に上方付勢状態で押込み可能に突設してステム５の上端に押下ヘッド６を嵌着してなり、押下ヘッド６は、ステム５上端部に嵌着させるとともに、ステム５上に横設した頂板20よりステム５内と連通する摺動筒21を立設し、且つ、頂壁20周縁部より案内筒23を垂設した装着筒部材16と、摺動筒21外周に摺動下降可能に嵌合させたシリンダ筒26上方に、先端に噴出口８を開口した弁室Ａを備えるとともに、装着筒部材16に対して押し下げ可能に設けた本体17と、弁室Ａ内において前方付勢状態で噴出口８を閉塞し、且つ、シリンダ筒26内より噴出口８に至る流路を画成してなる弁部材18と、弁部材18の後端部に上端を連繋させるとともに、下端部を頂板20上面に当接係止させ、且つ、装着筒部材16に対する本体17の押し下げ時に弁部材18を後方へ引き出す如く揺動可能に本体17に枢着した梃部材19とを備え、ステム５に対する本体17の押下抗力がステム５自体の押下抗力より小である液体噴出ポンプであって、装着キャップ３上に立設した案内壁12外方に装着筒部材16の案内筒23の下端部を押し下げ可能に垂下させるとともに、案内壁12と案内筒23との所定位置において上下動可能且つ回動不能に連繋させ、且つ、頂板 20 の両側に於いて頂板 20 の上下に延び、下部を案内筒 23 の一部として構成した係止板 24 を設け、各係止板 24 と押下ヘッド周壁 17a とを上下動可能且つ回動不能に連繋させた。
【０００７】
【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。
【０００８】
本発明の液体噴出ポンプ１は、口頸部２に装着キャップ３を嵌合して容器体４に装着するとともに、上記装着キャップ３上方に上方付勢状態で押し込み可能に突設したステム５の上端に押下ヘッド６を嵌着したタイプのものである。また、押下ヘッド６を押し下げることにより容器体４内へ垂下したシリンダ７内の液がステム５を介して押下ヘッド６の噴出口８より噴出する如く構成したものである。
【０００９】
図示例に於いて装着キャップ３は口頸部２外周に螺合させた周壁９上端縁より、中央部を円筒状に隆起した頂壁10を延設しており、頂壁10の隆起部分10a 中央に開口した窓孔11より上記ステム５を突出している。また、頂壁10上には後述する廻り止め機構を構成する案内壁12を立設している。案内壁12は、図３に示す如く、下部を上記隆起部分10a の垂壁部と一部を共有する前後一対の円弧板状をなしている。また、各案内壁12の上部は隆起部分10a 上でその端縁間をそれぞれ直線的に連結する一対の連結壁部13で連結している。更に、頂壁10外周縁部よりカバー筒14を立設している。カバー筒14は頂壁10周縁部より立設した内カバー筒14a 上端より外方下方へ外カバー筒14b を垂設して構成している。また、上記隆起部分10a の内周に上記シリンダ７上端を嵌着してその下部を容器体４内に垂下させ、シリンダ７下端部には吸い上げパイプ15の上端を嵌着し、その弯曲させた下部の下端開口部15a を容器体４底部の隅部に位置させている。
【００１０】
本発明の液体噴出ポンプ１に於ける押下ヘッド６は、装着筒部材16と、本体17と、弁部材18と、梃部材19とを備えている。
【００１１】
装着筒部材16は、上記ステム５上端部に嵌着させるとともに、上記ステム上に横設した頂板20よりステム内と連通する摺動筒21を立設している。図示例では、ステムの外周上端部に嵌合させた装着筒22を頂板20裏面より垂設するとともに、頂板20中央にステム内と連通する摺動筒21を立設し、更に、頂板20周縁部からは下方へ案内筒23を垂設している。この案内筒23はその下端部を上記案内壁12外方へ押下が可能に垂下させている。また、頂板20の両側において、上下に延びる係止板24を延設している。この係止板24は、後述する装着筒部材16と本体周壁17a との連繋のため、或いは本体17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20の下方部分においては案内筒23の一部として構成しており、外面に二本の係合凹溝25を縦設している。
【００１２】
本体17は、ステム５に装着筒部材16を介して押し下げ可能に連結したもので、上記摺動筒21外周に摺動下降可能に嵌合させたシリンダ筒26上方に、先端に上記噴出口８を開口した弁室Ａを備えている。また、周壁17a 上端縁より頂壁17b を延設した下端開口の有頂筒状をなし、また、周壁17a 前部に前端を開口した横筒27を後方へ突設し、更に、横筒27下面より上記シリンダ筒26を垂設しており、横筒27内に後述噴出口部材を嵌着させて弁室Ａを画成し、上記摺動筒21に摺動下降可能にシリンダ筒26を嵌合させて装着している。
【００１３】
上記横筒27は両側及び後部に梃部材19の上部と係止板24とが収納できるスペースをあけており、また、後壁中央に窓孔を穿設し、その周囲の後壁前面より前方へシール筒28を突設し、更に、下部にはシリンダ筒26内と連通する連絡口を設けている。
【００１４】
また、周壁17a 内面両側を回動不能且つ上下動可能に上記装着筒部材16に係合させている。周壁17a と装着筒部材16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17a 両側において、上記係止板24外面の上記係合凹溝25にそれぞれ係合する各一対の係合突条29を縦設している。
【００１５】
また、横筒27には噴出口部材30を嵌着させている。この噴出口部材30は先端に噴出口８を開口させて横筒とともに弁室Ａを形成するもので、横筒27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８を開口している。また、外面より突設した環状突起を本体17前面に当接係止させ、内部には周方向複数のリブを突設している。
【００１６】
弁部材18は、上記弁室Ａ内において前方付勢状態で上記噴出口を閉塞し、且つ、上記シリンダ筒26内より上記噴出口８に至る流路を画成したもので、更にいえば上記シール筒28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８を閉塞して上記連絡口より噴出口８に至る流路を画成したものである。
【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を延設するとともに、スカート状部後端縁より折り返した逆スカート状部の外周縁をシール筒28内周に摺動可能に嵌合させている。また、横筒27の後壁前面とスカート状部の分岐部分とに介在させたコイルスプリング31により前方へ付勢して先端を噴出口８に圧接して閉塞している。また、後端を上記窓孔より突出させ、突出部分に梃部材係合用の環状凹部を横設している。これにより、シリンダ筒26内から連絡口を介して横筒27内を通り噴出口８に至る流路を画成している。
【００１８】
梃部材19は、上記装着筒部材16に対する本体17の押し下げ時に上記弁部材18を後方へ引き出す如く揺動可能に枢着したもので、上記横筒27後壁の窓孔を介してその後方へ突出した弁部材18後端部に上端を連係させるとともに、下端部を上記頂板20上面に当接係止させている。
【００１９】
図示例に於ける梃部材19は、図５に示す如き形態をなし、上端部を弁部材18の後端部に連係した垂直板部32下端部より前方へ下る二股の傾斜板部33を延設するとともに、各傾斜板部33の下端部を摺動筒21両側の頂板20上面に当接係止させている。本実施例に於ける梃部材19と弁部材18との連係は、垂直板部32の上端部中央に設けた切欠部に弁部材18の上記環状凹部を嵌合させている。
【００２０】
また、屈折部分両側に突設した枢着軸34を、それぞれ両側の軸受に回動可能に嵌合させている。本実施例に於ける軸受は、横筒27直下に嵌着させた取付板35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35は、シリンダ筒26を嵌着させる嵌合孔と、梃部材19の垂直板部32を揺動可能に挿通する窓孔とを備え、周縁部を本体周壁に嵌合させている。
【００２１】
そして、コイルスプリング31により前方付勢された弁部材18により垂直板部32上部の連係部分を常時前方へ付勢させており、本体17の押し下げにより、装着筒部材16の頂板20が傾斜板部33を押し上げて梃部材19を回動させ、コイルスプリング31の前方付勢力に抗して弁部材18を後方へ引き出す如く構成している。
【００２２】
本発明では、またステム５に対する本体17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、基本的にはステム５を上方付勢させるためのコイルスプリング（シリンダ内）よりも、弁部材18を前方付勢させるためのコイルスプリング31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筒との摩擦力，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】
本発明ではこの様に構成された液体噴出ポンプに於いて、押下ヘッド６の容器体４に対する回動を規制する廻り止め機構を設けている。この廻り止め機構は、例えば、押下ヘッド６の噴出口８の向きと、容器体４内に垂下した吸い上げパイプ15の下端開口15aの向きとが合致する如く常時押下ヘッド６を一定の向きとして、その位置からの容器体４に対する回転を防止するものであり、そのために、上記案内壁12と上記案内筒23の所定位置に於いて上下動可能且つ回動不能に連繋させるとともに、装着筒部材16と押下ヘッド周壁17a とを上下動可能且つ回動不能に連繋させている。
【００２４】
上記案内壁12は、上記した要件を満たせばその形態は種々採用でき、図示例の如く板状であっても（実際は連結壁部13で外観上異形環状に形成）、或いは環状のものであっても良い。
【００２５】
上記上下動可能且つ回動不能な連繋の具体的手段として、図示例の如く、上記案内筒23内面に突設した係合突条37を、案内壁12外面に縦設した案内溝37に上下動可能に嵌合する。或いは、案内壁23に縦設した案内溝に、案内壁外面に突設した縦突条を上下動可能に嵌合させる手段等が挙げられ、これに限られない。
【００２６】
上記係合突条36と上記案内溝37とは一対設けても複数対設けても所期の目的を達成できる。また、二対を対向位置に設ける場合にはそれぞれの係合突条と案内溝の大きさを変えることにより、本体17のより円滑な上下動が可能で且つ組み付け時の位置決めが容易となる。また、少なくとも二対を対向位置以外の所定位置に設けることにより、同様に本体17のより円滑な上下動が可能で且つ組み付け時の位置決めが容易となる。それに伴って、本実施例の案内溝37は、前部の案内壁12中央部に一箇所と、後部の案内壁12の二箇所の計三箇所設けている。後部の案内溝37は前部のそれと対向する位置、即ち１８０°回動位置からずれた位置に所定間隔をあけて設けている。尚、この少なくとも二対の連繋部位の具体的構成は、この係合突条36と案内溝37との組み合わせ以外に、上記要件を備えれば種々採用できる。尚、この際押下ヘッド周壁17a 下端部はカバー筒14内へ挿入された状態になっている。また、装着筒部材16と押下ヘッド周壁17a との連繋は上述した如くである。
【００２７】
上記の如く構成した液体噴出ポンプ１は、図１の状態から押下ヘッド６を押し下げると、ステム５自体の押下抗力の方が本体17のステム５に対する押下抗力より大きいため、最初ステム５は下がらず、装着筒部材16に対して本体17が下降する。この際、梃部材19の下端部が装着筒部材16の頂板20上面に押し上げられて枢着軸34を中心に回動し、その上端部が後方へ回動して弁部材18をコイルスプリング31の弾発力に抗して後方へ移行させ、噴出口８が開く。次いでステム５が下降し、該ステムの下降によりポンプ内の液がステム５よりシリンダ筒26を通り、連絡口から流路を介して噴出口８より外部へ噴出する。
【００２８】
次に押下ヘッド６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、例えば押下ヘッド６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８は開いたままの状態で行われる。従って、この時点で横筒27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31の弾発力により弁部材18が前方へ移行して噴出口８を閉塞し、それに伴い梃部材19により本体17を装着筒部材16に対して上方へ押上げ、元の状態に戻る。
【００２９】
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。
【００３０】
【発明の効果】
以上説明した如く本発明の液体噴出ポンプは、既述構成としたことにより、押下ヘッドを、その噴出口を常時所定の向きで上下動させることができ、その結果、例えば、下部を弯曲してその先端開口を容器体の下端隅部に開口した吸い上げパイプの存在下、その開口方向と同じ方向に予め噴出口を開口しておくと、容器体内液の残液が少なくなっても効率の良い噴出が可能となる。しかも、装着筒部材の案内筒は案内壁外方までその下端部を垂下させて上下動可能且つ回動不能に連繋させており、装着筒部材と押下ヘッド周壁とも同様に連繋させているため、シリンダ筒内へ摺動可能に摺動筒を嵌合させることにより従来比較的不安定に支持されている押下ヘッド本体の上下動が安定したものとなりガタツキをより確実に防止するものである。また、従来のこの種のポンプが備える液切れの良さ、噴出口の良好な密閉性、ヘッドの容易な押し下げ、耐久性等の効果を併せて発揮するものである。
【図面の簡単な説明】
【図１】本発明の一実施例を示す要部縦断面図である。
【図２】同実施例の押下ヘッドの縦断面図である。
【図３】同実施例の装着キャップを示す平面図である。
【図４】同実施例の側面図である。
【図５】同実施例の梃部材を示す拡大斜視図である。
【符号の説明】
２…容器体，３…装着キャップ，４…容器体，５…ステム，
６…押下ヘッド，８…噴出口，12…案内壁，16…装着筒部材，17…本体，
17a …本体周壁，18…弁部材，19…梃部材，20…頂板，21…摺動筒，
23…案内筒，26…シリンダ筒，Ａ…弁室[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid ejection pump, and more particularly, the liquid breakage after the liquid ejection is good, there is no liquid clogging in the head, etc., and it is easy to push down during the liquid ejection, and the ejection direction of the pressing head is The present invention relates to a liquid ejection pump that can always be directed in a predetermined direction with respect to a container body.
[0002]
[Prior art]
As a liquid ejection pump, a fitting cap is fitted to the neck of the mouth and attached to the container body, and a pressing head is fitted to the upper end of the stem protruding so as to be able to be pushed upward above the fitting cap. It has been. In addition, as a pressing head for these pumps, a mounting cylinder member provided with a sliding cylinder communicating with the inside of the stem, and a valve chamber having an opening at the tip above the cylinder cylinder fitted to the outer periphery of the sliding cylinder A main body provided so as to be able to be pushed down with respect to the mounting cylinder member, a valve member that closes the ejection port in a forward biased state, and that defines a flow path from the inside of the cylinder cylinder to the ejection port, and a valve member, There has been proposed one having a specially-configured gutter member that is linked and opened by pushing down the head (for example, see Patent Document 1).
[0003]
These liquid ejection pumps equipped with pressing heads are capable of stable liquid ejection at all times, have good liquid drainage, have excellent sealing performance at the ejection port, and can be easily pushed down for long-term use. It is an excellent one that can stably eject liquid.
[0004]
[Patent Document 1]
JP 2002-326044 A (page 2-5, FIG. 1)
[0005]
[Problems to be solved by the invention]
The present invention is a further improvement of the pump provided with the pressing head of the special form described above, and the pressing head can always be directed in a predetermined direction with respect to the container body so that the liquid can be efficiently ejected. The structure for that purpose is also very simple, and this type of conventional pump has such features as stable liquid ejection, good liquid drainage, good sealing at the jet outlet, easy depression of the head, durability, etc. The present invention proposes an excellent liquid jet pump capable of exhibiting the effect.
[0006]
The first means is configured as follows. That is, the mounting cap 3 is fitted to the neck 2 to be mounted on the container body 4, and the pressing head 6 is fitted to the upper end of the stem 5 so as to be able to be pushed upward above the mounting cap 3. The pressing head 6 is fitted to the upper end portion of the stem 5, and a sliding cylinder 21 that is in communication with the inside of the stem 5 is erected from a top plate 20 provided on the stem 5. A mounting cylinder member 16 in which a guide cylinder 23 is suspended from the peripheral edge, and a valve chamber A having a spout 8 opened at the tip are provided above the cylinder cylinder 26 slidably fitted on the outer periphery of the sliding cylinder 21. In addition, a main body 17 provided so as to be able to be pushed down with respect to the mounting cylinder member 16, and a flow path that closes the ejection port 8 in the valve chamber A in a forward-biased state and reaches the ejection port 8 from the cylinder cylinder 26. The upper end is connected to the valve member 18 and the rear end portion of the valve member 18, and the lower end portion is on the top plate 20. And a flange member 19 pivotally attached to the main body 17 so as to swing out so that the valve member 18 can be pulled out rearward when the main body 17 is pushed down with respect to the mounting cylinder member 16. It is a liquid jet pump whose pressing drag is smaller than the pressing drag of the stem 5 itself, and hangs down so that the lower end of the guide cylinder 23 of the mounting cylinder member 16 can be pushed down outside the guide wall 12 standing on the mounting cap 3 In addition, the guide wall 12 and the guide cylinder 23 are connected in a vertically movable and non-rotatable manner at a predetermined position, and extend vertically on the top plate 20 on both sides of the top plate 20 , and the lower part is part of the guide cylinder 23 . The locking plates 24 configured as described above are provided, and the locking plates 24 and the pressing head peripheral wall 17a are connected so as to be vertically movable and non-rotatable .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0008]
The liquid jet pump 1 according to the present invention has a mounting cap 3 fitted to the neck 2 and mounted on the container body 4, and a stem 5 is provided above the mounting cap 3 so as to be pushed in an upward biased state. This is a type in which a pressing head 6 is fitted to the upper end. Further, the liquid in the cylinder 7 suspended into the container body 4 is ejected from the ejection port 8 of the press-down head 6 through the stem 5 when the press-down head 6 is pushed down.
[0009]
In the illustrated example, the mounting cap 3 extends from the upper end edge of the peripheral wall 9 screwed to the outer periphery of the mouth-and-neck portion 2, and extends from the top wall 10 with the central portion raised in a cylindrical shape. The stem 5 protrudes from a window hole 11 opened in the center. On the top wall 10, a guide wall 12 constituting a detent mechanism described later is erected. As shown in FIG. 3, the guide wall 12 has a pair of front and rear circular arc plates that share a part with the vertical wall portion of the raised portion 10a. The upper portions of the guide walls 12 are connected to each other by a pair of connecting wall portions 13 that linearly connect the end edges on the raised portion 10a. Further, a cover cylinder 14 is erected from the outer peripheral edge of the top wall 10. The cover cylinder 14 is configured by suspending an outer cover cylinder 14b downward from an upper end of an inner cover cylinder 14a erected from the peripheral edge of the top wall 10. Further, the upper end of the cylinder 7 is fitted to the inner periphery of the raised portion 10a and the lower part is suspended in the container body 4, and the upper end of the suction pipe 15 is fitted to the lower end of the cylinder 7 and bent. The lower lower end opening 15a is positioned at the corner of the bottom of the container body 4.
[0010]
The pressing head 6 in the liquid jet pump 1 of the present invention includes a mounting cylinder member 16, a main body 17, a valve member 18, and a flange member 19.
[0011]
The mounting cylinder member 16 is fitted to the upper end portion of the stem 5, and a sliding cylinder 21 communicating with the inside of the stem is erected from a top plate 20 provided horizontally on the stem. In the illustrated example, a mounting cylinder 22 fitted to the upper end of the outer periphery of the stem is suspended from the back surface of the top plate 20, a sliding cylinder 21 communicating with the inside of the stem is erected at the center of the top plate 20, and the periphery of the top plate 20 A guide tube 23 is suspended downward from the section. The lower end of the guide tube 23 is suspended so that it can be pushed out of the guide wall 12. In addition, on both sides of the top plate 20, a locking plate 24 extending vertically is extended. This locking plate 24 is provided for the purpose of connecting a mounting cylinder member 16 and a main body peripheral wall 17a, which will be described later, or for preventing wobbling of the main body 17, and in the illustrated example, in the lower part of the top plate 20. It is configured as a part of the guide tube 23, and two engaging grooves 25 are provided vertically on the outer surface.
[0012]
The main body 17 is connected to the stem 5 via a mounting cylinder member 16 so as to be able to be pushed down. Above the cylinder cylinder 26 fitted to the outer periphery of the sliding cylinder 21 so as to be slidable down, the jet outlet 8 is provided at the tip. A valve chamber A is provided. In addition, the top wall 17b is extended from the upper end edge of the peripheral wall 17a and has a top-bottomed cylindrical shape. Further, a horizontal cylinder 27 having a front end opened at the front of the peripheral wall 17a is projected rearward. The cylinder cylinder 26 is suspended from the lower surface, and a later-described jetting outlet member is fitted in the horizontal cylinder 27 to define a valve chamber A, and the cylinder cylinder 26 is slidably lowered on the sliding cylinder 21. It is fitted and fitted.
[0013]
The horizontal cylinder 27 has a space for accommodating the upper part of the flange member 19 and the locking plate 24 on both sides and the rear part, and a window hole is formed in the center of the rear wall so that the front side of the surrounding rear wall is in front. A sealing cylinder 28 is provided in a protruding manner, and a communication port communicating with the inside of the cylinder cylinder 26 is provided at the lower part.
[0014]
Further, both sides of the inner surface of the peripheral wall 17a are engaged with the mounting cylinder member 16 so as not to rotate but to move up and down. Various structures can be adopted for the engagement between the peripheral wall 17a and the mounting cylinder member 16 as long as the above conditions are satisfied. However, in the illustrated example, the engagement grooves 24 on the outer surface of the locking plate 24 are respectively engaged on both sides of the peripheral wall 17a. Each pair of engaging protrusions 29 is vertically provided.
[0015]
Further, the jet member 30 is fitted to the horizontal cylinder 27. This spout member 30 has a spout 8 opened at the tip to form a valve chamber A together with a horizontal cylinder. The rear part is liquid-tightly fitted to the front part in the horizontal cylinder 27 and the front part is tapered. The diameter is reduced, and a spout 8 is opened at the tip. Further, an annular protrusion protruding from the outer surface is brought into contact with and locked to the front surface of the main body 17, and a plurality of ribs in the circumferential direction are protruded inside.
[0016]
The valve member 18 closes the jet outlet in the valve chamber A in a forward biased state, and defines a flow path from the inside of the cylinder cylinder 26 to the jet outlet 8. The rear outer periphery is slidably fitted to the inner periphery of the seal tube 28, and the jet port 8 is closed in a forward biased state to define a flow path from the communication port to the jet port 8.
[0017]
In the illustrated example, it has a horizontal bar shape, and the skirt-like portion extends backward from the middle portion in the longitudinal direction of the outer periphery, and the outer peripheral edge of the reverse skirt-like portion folded back from the rear edge of the skirt-like portion slides on the inner periphery of the seal cylinder 28. It is movably fitted. The front end of the horizontal cylinder 27 is urged forward by a coil spring 31 interposed between the front surface of the rear wall of the horizontal cylinder 27 and the branching portion of the skirt-like portion, and the tip is pressed against the jet port 8 to be closed. Further, the rear end is protruded from the window hole, and an annular recess for engaging the flange member is horizontally provided in the protruding portion. Thus, a flow path is formed from the cylinder cylinder 26 through the communication port to the jet outlet 8 through the horizontal cylinder 27.
[0018]
The flange member 19 is pivotally mounted so as to be able to swing out so that the valve member 18 is pulled out rearward when the main body 17 is pushed down with respect to the mounting cylinder member 16, and is moved rearwardly through a window hole in the rear wall of the horizontal cylinder 27. The upper end is linked to the rear end portion of the protruding valve member 18 and the lower end portion is in contact with and locked to the top surface of the top plate 20.
[0019]
The eaves member 19 in the illustrated example has a form as shown in FIG. 5 and extends a bifurcated inclined plate portion 33 whose upper end portion is lowered forward from the lower end portion of the vertical plate portion 32 linked to the rear end portion of the valve member 18. In addition, the lower end portion of each inclined plate portion 33 is brought into contact with and locked to the upper surface of the top plate 20 on both sides of the sliding cylinder 21. In this embodiment, the flange member 19 and the valve member 18 are linked by fitting the annular recess of the valve member 18 into a notch provided at the center of the upper end of the vertical plate portion 32.
[0020]
Further, pivoting shafts 34 projecting on both sides of the refracting portion are fitted to the bearings on both sides so as to be rotatable. The bearings in the present embodiment are a pair of vertically suspended lower portions of the lower surface of the mounting plate 35 fitted just below the horizontal cylinder 27, with a predetermined interval, and each taper-shaped introducing recess is wider below the lower end of the inner side surface. A bearing recess is provided via the. The mounting plate 35 includes a fitting hole for fitting the cylinder cylinder 26 and a window hole through which the vertical plate portion 32 of the flange member 19 is swingably inserted, and the peripheral portion is fitted to the peripheral wall of the main body. Yes.
[0021]
The valve member 18 urged forward by the coil spring 31 always urges the linkage portion at the upper part of the vertical plate portion 32 forward, and the top plate 20 of the mounting cylinder member 16 is inclined by the depression of the main body 17. 33 is pushed up to rotate the eaves member 19 so that the valve member 18 is pulled backward against the forward biasing force of the coil spring 31.
[0022]
In the present invention, the pressing force of the main body 17 against the stem 5 is configured to be smaller than the pressing force of the stem itself. For this configuration, basically, the spring force of the coil spring 31 for biasing the valve member 18 forward is selected smaller than the coil spring (inside the cylinder) for biasing the stem 5 upward. These may be selected in consideration of the frictional force between the sliding cylinder and the cylinder cylinder, the frictional force when the saddle member swings, and the like.
[0023]
In the present invention, the liquid jet pump configured as described above is provided with a detent mechanism for restricting the rotation of the pressing head 6 relative to the container body 4. This anti-rotation mechanism is configured so that, for example, the pressing head 6 is always in a fixed direction so that the direction of the spout 8 of the pressing head 6 matches the direction of the lower end opening 15a of the suction pipe 15 suspended in the container body 4. This prevents rotation of the container body 4 from that position. For this purpose, the guide wall 12 and the guide cylinder 23 are connected in a vertically movable and non-rotatable manner at a predetermined position, and the mounting cylinder member 16 is connected. And the pressing head peripheral wall 17a are connected so that they can move up and down and cannot rotate.
[0024]
The guide wall 12 can have various forms as long as the above requirements are satisfied. The guide wall 12 may have a plate shape as shown in the figure (actually, the connecting wall portion 13 is formed in an annular shape in appearance) or an annular shape. May be.
[0025]
As a specific means of linkage that can move up and down and cannot rotate, as shown in the figure, an engaging protrusion 37 projecting from the inner surface of the guide tube 23 is vertically moved into a guide groove 37 vertically disposed on the outer surface of the guide wall 12. Mates movably. Alternatively, a means or the like for fitting a vertical ridge projecting on the outer surface of the guide wall into a guide groove vertically provided on the guide wall 23 so as to be movable up and down can be used.
[0026]
Whether the engagement protrusion 36 and the guide groove 37 are provided as a pair or as a plurality of pairs, the intended purpose can be achieved. Further, when two pairs are provided at the opposing positions, the size of the respective engaging protrusions and guide grooves is changed, so that the body 17 can be moved more smoothly up and down, and positioning during assembly is facilitated. Further, by providing at least two pairs at predetermined positions other than the opposed positions, the main body 17 can similarly be moved more smoothly up and down and can be easily positioned during assembly. Accordingly, the guide groove 37 of the present embodiment is provided in a total of three locations, one at the center of the front guide wall 12 and two at the rear guide wall 12. The rear guide groove 37 is provided at a predetermined interval at a position facing the front guide groove 37, that is, a position shifted from the 180 ° rotation position. In addition to the combination of the engaging protrusion 36 and the guide groove 37, various specific configurations of the at least two pairs of connecting portions can be adopted as long as the above requirements are provided. At this time, the lower end of the pressing head peripheral wall 17a is inserted into the cover cylinder 14. Further, the connection between the mounting cylinder member 16 and the pressing head peripheral wall 17a is as described above.
[0027]
In the liquid jet pump 1 configured as described above, when the pressing head 6 is pushed down from the state shown in FIG. 1, the pressing force of the stem 5 itself is larger than the pressing force against the stem 5 of the main body 17, so that the stem 5 does not drop first. The main body 17 is lowered with respect to the mounting cylinder member 16. At this time, the lower end portion of the flange member 19 is pushed up to the upper surface of the top plate 20 of the mounting cylinder member 16 and pivots about the pivot shaft 34, and the upper end portion pivots rearward so that the valve member 18 is moved to the coil spring 31. The nozzle 8 is moved backward against the resilience of the nozzle, and the spout 8 opens. Next, the stem 5 descends, and as the stem descends, the liquid in the pump passes through the cylinder cylinder 26 from the stem 5 and is ejected from the ejection port 8 to the outside through the flow path.
[0028]
Next, when the pressing of the pressing head 6 is released, the head is raised by the upward biasing force of the stem first. At this time, for example, the stem is raised before the hand pressing the upper surface of the pressing head 6 is released, and the ejection port 8 is kept open. Accordingly, at this time, the inside of the horizontal cylinder 27 is in a negative pressure state. Next, there is room for releasing the hand, and the valve member 18 moves forward by the elastic force of the coil spring 31 to close the ejection port 8, and accordingly, the main body 17 is moved upward with respect to the mounting cylinder member 16 by the flange member 19. To return to the original state.
[0029]
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.
[0030]
【The invention's effect】
As described above, the liquid jet pump according to the present invention has the above-described configuration, so that the pressing head can always move up and down the jet outlet in a predetermined direction. In the presence of the suction pipe having the opening at the lower end corner of the container body, if the jet outlet is opened in the same direction as the opening direction, it is efficient even if the residual liquid in the container is reduced. It becomes possible to erupt. Moreover, the guide cylinder of the mounting cylinder member is linked to the guide wall outside the guide wall so as to be vertically movable and non-rotatable by hanging down, and the mounting cylinder member and the pressing head peripheral wall are similarly linked. By fitting the sliding cylinder into the cylinder cylinder so as to be slidable, the vertical movement of the pressing head body which has been supported relatively stably in the prior art becomes stable, and rattling is more reliably prevented. In addition, the conventional pump of this type exhibits effects such as good liquid drainage, good sealing of the jet outlet, easy depression of the head, durability, and the like.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a pressing head according to the embodiment.
FIG. 3 is a plan view showing a mounting cap of the same embodiment.
FIG. 4 is a side view of the same embodiment.
FIG. 5 is an enlarged perspective view showing a flange member of the same example.
[Explanation of symbols]
2 ... container body, 3 ... mounting cap, 4 ... container body, 5 ... stem,
6 ... press head, 8 ... spout, 12 ... guide wall, 16 ... mounting cylinder member, 17 ... main body,
17a ... peripheral wall of main body, 18 ... valve member, 19 ... gutter member, 20 ... top plate, 21 ... sliding cylinder,
23 ... Guide tube, 26 ... Cylinder tube, A ... Valve chamber

Claims

A fitting cap 3 is fitted to the mouth / neck portion 2 to be fitted to the container body 4, and is protruded above the fitting cap 3 so as to be able to be pushed in an upward biased state, and a pressing head 6 is fitted to the upper end of the stem 5. The pressing head 6 is fitted to the upper end portion of the stem 5, and a sliding cylinder 21 that is in communication with the inside of the stem 5 is erected from a top plate 20 provided on the stem 5, and the peripheral portion of the top wall 20 A mounting cylinder member 16 having a guide cylinder 23 provided vertically, and a cylinder chamber 26 fitted to the outer periphery of the sliding cylinder 21 so as to be slidable downward are provided with a valve chamber A having an opening 8 at the tip, A main body 17 provided so as to be able to be pushed down with respect to the mounting cylinder member 16 and a flow path that closes the ejection port 8 in the valve chamber A in a forward-biased state and extends from the inside of the cylinder cylinder 26 to the ejection port 8 are defined. The upper end of the valve member 18 is connected to the rear end of the valve member 18 and the lower end of the valve member 18 is brought into contact with the upper surface of the top plate 20. And a hook member 19 pivotally attached to the main body 17 so as to be swingable so that the valve member 18 can be pulled out rearward when the main body 17 is pushed down with respect to the mounting cylinder member 16. A liquid jet pump that is smaller than the pressing drag of the stem 5 itself, and hangs down the lower end portion of the guide tube 23 of the mounting tube member 16 to the outside of the guide wall 12 erected on the mounting cap 3, The guide wall 12 and the guide cylinder 23 are connected in a vertically movable and non-rotatable manner at a predetermined position, extend on the top plate 20 on both sides of the top plate 20 , and the lower part is configured as a part of the guide cylinder 23 . the locking plate 24 is provided, the liquid jet pump, characterized in that the pressing head peripheral wall 17a and the engaging plate 24 were to be vertically movable and rotationally fixed cooperative.