JP3889853B2 - Reciprocating pump for ejector - Google Patents

Reciprocating pump for ejector Download PDF

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Publication number
JP3889853B2
JP3889853B2 JP14582897A JP14582897A JP3889853B2 JP 3889853 B2 JP3889853 B2 JP 3889853B2 JP 14582897 A JP14582897 A JP 14582897A JP 14582897 A JP14582897 A JP 14582897A JP 3889853 B2 JP3889853 B2 JP 3889853B2
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injection button
button
injection
ejector
container
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JPH10318125A (en
Inventor
敏夫 斎藤
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Mitani Valve Co Ltd
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Mitani Valve Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1078—Vacuum chambers acting like springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem

Description

【０００１】
【発明の属する技術分野】
この発明は、容器内に収納する、たとえば化粧用・薬用・光沢用・潤滑用・塗装用などの内容物を吐出する噴出器に適用し得る。詳しくは、そのような噴出器の容器口部に取り付け、噴射釦を押し下げたとき、容器内の内容物を噴射釦の噴出口から吐出する噴出器用の往復ポンプに関する。
【０００２】
【従来の技術】
従来、たとえば図６に示すように、この種の往復ポンプｐは、噴出器容器１の口部１ａに取り付ける。
【０００３】
そして、使用時は、同往復ポンプｐの噴射釦３を押し下げ、それと一体に接合する噴出管４を釦復帰スプリング５に抗して押し込み、カップ状シリンダ部材６内の加圧室ａの圧力を上昇し、その圧力の一定以上の上昇とともにやがてキャップ状の出口弁部材７を弁復帰スプリング８の付勢力に抗して上昇し、さらなる噴射釦３の押し下げとともにやがて出口弁部材７のスリット７ａを介して加圧室ａと噴射釦３内の吐出通路３ａと連通し、加圧室ａ内の内容物をスリット７ａから吐出通路３ａを通して噴射釦３のくちばし状の噴出部３ｂ先端の噴出口３ｃから吐出していた。
【０００４】
そして、図５に示すように噴射釦３を完全に押し下げたところで、加圧室ａ内の圧力が低下し、こののち弁復帰スプリング８の付勢力で出口弁部材７を下降し、スリット７ａを介しての加圧室ａと吐出通路３ａ間の連通を遮断し、加圧室ａ内の内容物の噴出口３ｃからの吐出を停止していた。
【０００５】
次いで、噴射釦３から手を離すと、釦復帰スプリング５の付勢力で噴出管４を押し上げ、噴射釦３を図６に示す元の位置に復帰する。このとき、加圧室ａ内の圧力を低下し、入口弁部材９を図６中鎖線で示すように開き、噴出器容器１内の内容物をシリンダ部材６の吸込口６ａを通して加圧室ａ内に吸い上げていた。
【０００６】
【発明が解決しようとする課題】
ところが、このような従来の往復ポンプｐでは、上述したとおり、噴射釦３から手を離したとき、噴射釦３を元の位置に復帰する釦復帰スプリング５を設けるから、どうしてもその分部品点数が多くなる問題があった。
【０００７】
そこで、この発明の目的は、上述した種類の噴出器用の往復ポンプにおいて、釦復帰スプリングを不要として部品点数を少なくし、コストダウンを図ることにある。
【０００８】
【課題を解決するための手段】
そこで、請求項１に記載の発明は、たとえば以下の図示実施の形態で説明するとおり、容器２５の口部２５ａに取り付けて使用し、噴射釦２２を押し下げたとき加圧室Ａ内の内容物を噴出管２０を通して前記噴射釦２２の噴出口２２ｄから吐出する一方、該噴射釦２２から手を離したときその噴射釦２２を元の位置に復帰して前記加圧室Ａ内に前記容器２５内の内容物を吸い上げる噴出器用の往復ポンプにおいて、
環状のシリンダ穴１１ａを設ける筒状肉厚部１１をポンプ本体１０に設け、そのポンプ本体１０の前記筒状肉厚部１１内に前記噴出管２０を挿入し、その噴出管２０に前記噴射釦２２を取り付け、その噴射釦２２に、それを押し下げたとき、内外を連通する連通孔２２ｆを形成する筒状のピストン部２２ｂを設け、
前記噴射釦２２を押し下げたときその噴射釦２２で室内の空気を圧縮する一方、前記噴射釦２２から手を離したとき室内の圧縮空気圧で該噴射釦２２を復帰する空気室Ｂを形成してなる、ことを特徴とする。
【００１１】
そして、使用時、噴射釦２２を押し下げたとき、その噴射釦２２のピストン部２２ｂで空気室Ｂ内の空気を圧縮する一方、噴射釦２２から手を離したとき空気室Ｂ内の圧縮空気圧でピストン部２２ｂを押し上げて噴射釦２２を復帰する。
【００１４】
【発明の実施の形態】
以下、図面を参照しつつ、この発明の実施の形態について説明する。
図１は、この発明による噴出器用の往復ポンプであり、その噴射釦を押し下げていない不使用状態における縦断面図を示す。
【００１５】
図中符号１０は、ポリプロピレンやポリエチレン製のポンプ本体である。図示ポンプ本体１０は、比較的長い中筒部１１と、その外周の中段やや上から鍔状に設けて先端を下向きにのばす比較的短い外筒部１２と、中筒部１１の下端部内から下向きに突出して設ける内筒部１３とからなる。
【００１６】
中筒部１１は、その肉厚部内に、環状のシリンダ穴１１ａを上向きに設ける。また、内周面のほぼ中段位置に、点状や線状などの内向き突起１１ｂを周方向に複数設ける。外筒部１２は、内周に、雌ねじ１２ａを設けてなる。内筒部１３は、上部の大径部１３ａと下部の小径部１３ｂとからなる。その大径部１３ａと中筒部１１との間には、上下に貫通する貫通孔１４を周方向に複数設ける。
【００１７】
そして、内筒部１３の小径部１３ｂ内に、下方から細長いパイプ１５の上端部を圧入固着するとともに、上方からボール状の入口弁部材１６を挿入して小径部１３ｂ内の弁座１３ｃ上に乗せる。
【００１８】
次いで、ポンプ本体１０の中筒部１１内に上方から、上端に噴射釦２２を取り付けた噴出管２０を挿入し、その下端に取り付けた弁保持部材１７および出口弁部材１８を内筒部１３の大径部１３ａ内に入れる。
【００１９】
図示弁保持部材１７は、拡大して示す図２から判るとおり、外周に上向き段部を３つ設けて上方に向けて順次小径となるように、下から順にリング部１７ａ・環部１７ｂ・筒部１７ｃ・棒部１７ｄを設ける。そして、リング部１７ａの外周面にはローレット溝１７ｅを形成し、棒部１７ｄの外周面には縦溝１７ｆを形成してなる。
【００２０】
図示出口弁部材１８は、同じく拡大して示す図２から判るとおり、弾性内筒部１８ａと弾性外筒部１８ｂとを設ける。そして、弾性内筒部１８ａの内周面には縦溝１８ｃを周方向に複数設ける一方、弾性外筒部１８ｂは上下方向に向けて漸次拡径としてなる。
【００２１】
そして、その弾性内筒部１８ａ内に弁保持部材１７の筒部１７ｃを緩みなく挿入し、その弁保持部材１７の棒部１７ｄを噴出管２０の下端部内に圧入する。これにより、出口弁部材１８は、弾性内筒部１８ａの上端を噴出管２０の下端部内周面に押し当ててその間を液密に保持しながら、噴出管２０と弁保持部材１７間で上下動するように設ける。
【００２２】
そうして、それらの弁保持部材１７および出口弁部材１８をポンプ本体１０の中筒部１１内に押し込み、弾性外筒部１８ｂの下端部を内筒部１３の大径部１３ａ内に入れ、弾性外筒部１８ｂの上端部が内向き突起１１ｂを乗り越えたところで、加圧室Ａ内の圧力で弁保持部材１７を戻してその環部１７ｂ上の段部を弾性内筒部１８ａの下端に押し当て、出口弁部材１８も戻して弾性外筒部１８ｂの上端を内向き突起１１ｂに突き当てて止める。
【００２３】
これにより、弾性外筒部１８ｂの上端部を中筒部１１の内周面に押し当て、また下端部を内筒部１３の大径部１３ａの内周面に押し当て、さらに弾性内筒部１８ａの下端を弁保持部材１７の環部１７ｂ上の段部に当て、常時はそれぞれそれらの間を液密に保持する。そして、内筒部１３内を、前述の入口弁部材１６と弁保持部材１７と出口弁部材１８とで仕切り、該内筒部１３内に加圧室Ａを形成する。
【００２４】
ところで、噴出管２０は、図１に示すとおり、上端部を噴射釦２２の中心短筒部２２ａ内に圧入し、ポンプ本体１０の中筒部１１内にそれと同心に収納してなる。
【００２５】
噴射釦２２は、短筒部２２ａのまわりに長筒状のピストン部２２ｂを設けて下向きにのばすとともに、上部外周から一方向に突出してくちばし状の噴出部２２ｃを設けてなり、内部に、その噴出部２２ｃ先端の噴出口２２ｄと噴出管２０内とを連通する吐出通路２２ｅを形成してなる。
【００２６】
そして、ピストン部２２ｂをポンプ本体１０の中筒部１１のシリンダ穴１１ａ内に挿入し、そのシリンダ穴１１ａ内をピストン部２２ｂで塞いでそこに空気室Ｂを形成するとともに、短筒部２２ａの下端部を少し中筒部１１内に挿入した状態で設ける。
【００２７】
なお、図示するように、シリンダ穴１１ａ内に挿入するピストン部２２ｂには、１または複数の連通孔２２ｆを設ける。
【００２８】
さて、この往復ポンプは、図３に示すように、パイプ１５を口部２５ａから噴出器の容器２５内に挿入し、中筒部１１の一部もその口部２５ａ内に挿入し、口部２５ａ外周の雄ねじを外筒部１２内周の雌ねじ１２ａにねじ付け、該口部２５ａに取り付けて使用する。
【００２９】
なお、このとき、ポンプ本体１０と口部２５ａ上端との間で、図１に示すパッキン２６を圧縮し、容器２５内の内容物がねじ付け部を通して容器外に漏れることを防止する。
【００３０】
容器２５内には、たとえば化粧用・薬用・光沢用・潤滑用・塗装用などの、液状やクリーム状や乳状等をなす内容物を収納する。
【００３１】
いま、この往復ポンプを取り付けた噴出器を使用するときは、噴射釦２２に手を掛けて空気室Ｂ内の空気を圧縮しながらその噴射釦２２を押し下げる。すると、それと一体の噴出管２０および弁保持部材１７を押し込み、弁保持部材１７の環部１７ｂ上の段部を出口弁部材１８の弾性内筒部１８ａの下端から離す。そして、すぐに噴出管２０下端内周の図２に示す下向き段部２０ａを出口弁部材１８の弾性内筒部１８ａ上端に当て、出口弁部材１８もともに押し下げて加圧室Ａ内の容積を減少する。
【００３２】
これにより、その加圧室Ａ内の内容物は、弁保持部材１７のリング部１７ａ外周のローレット溝１７ｅから、その弁保持部材１７の環部１７ｂ上の段部と出口弁部材１８の弾性内筒部１８ａの下端間のすき間を通り、出口弁部材１８の弾性内筒部１８ａ内周の縦溝１８ｃから弁保持部材１７の棒部１７ｄ外周の縦溝１７ｆを通り、噴出管２０内に押し出される。そして、その噴出管２０内を通って吐出通路２２ｅ内に入り、その吐出通路２２ｅを通って噴出口２２ｄから吐出される。
【００３３】
そうして、さらに噴射釦２２を押し下げると、やがて内筒部１３の大径部１３ａの上端が出口弁部材１８の弾性外筒部１８ｂの上端部を突き上げ、ポンプ本体１０の中筒部１１に対する押し当てを解除し、中筒部１１の内部を貫通孔１４を通して容器２５の内部と連通する。もともと中筒部１１の内部はシリンダ穴１１ａ内の連通孔２２ｆを通して外部と連通するから、結局容器２５内は外部と連通して大気圧となる。
【００３４】
そして、図４に示すように、噴射釦２２を完全に押し込んで後、噴射釦２２から手を離すと、空気室Ｂ内の圧縮空気圧で噴射釦２２を噴出管２０および弁保持部材１７とともに押し上げ、その環部１７ｂ上の段部を弾性内筒部１８ａの下端に当てて出口弁部材１８も戻し、その弾性外筒部１８ｂの上端を内向き突起１１ｂに突き当て、図１に示す元の位置に復帰する。このとき、加圧室Ａ内の圧力が低下し、大気圧である容器２５内との圧力差から、入口弁部材１６が開き、容器２５内の内容物をパイプ１５内を通して加圧室Ａ内に吸い上げる。
【００３５】
この繰り返しにより、噴射釦２２に手を掛けてそれを押し下げるごとに、噴出口２２ｄから内容物を吐出することができる。
【００３６】
ところで、図示例では、ポンプ本体１０の中筒部１１の肉厚部内に環状のシリンダ穴１１ａを設けた。しかし、シリンダ穴１１ａは、環状に限らず、円弧状や丸穴状などのものを複数設けてもよい。そのシリンダ穴１１ａ内に挿入する噴射釦２２のピストン部２２ｂも、長筒状のものに限らず、シリンダ穴１１ａの穴形状に合わせて複数の円弧状や丸棒状などのものとしてもよい。
【００３７】
そのピストン部２２ｂは、図示例では、同一材料を用いて一体成形により噴射釦２２に完全に一体に設けた。しかし、別体でつくり、噴射釦にたとえば圧入や接着やねじ止め等で固着して設けてもよい。
【００３８】
また、図示例のポンプ本体１０・噴射釦２２は、もちろん一例であり、そのような形状のものに限定されるものではない。入口弁部材１６も、ボール状のものに限らず、たとえば従来から用いる図５および図６に示すような板状のものを開閉するように設けてもよく、要は逆止弁であればよい。
【００３９】
さらに、図示例で用いる出口弁部材１８には、閉じた状態において加圧室Ａを密閉する働き、開いたとき加圧室Ａ内の内容物を噴出口２２ｄ方向に導く働き、噴出口２２ｄ以外から内容物が漏れることを防止する働き、噴射釦２２をあるところまで押し下げたとき容器２５内を大気圧とする働きなどがある。しかし、これらの一部の働きを、他の部材で行うようにしてもよい。
【００４０】
【発明の効果】
したがって、この発明によれば、使用時、噴射釦を押し下げたとき、その噴射釦で空気室内の空気を圧縮する一方、噴射釦から手を離したとき空気室内の圧縮空気圧で噴射釦を復帰するから、従来用いていた釦復帰スプリングを不要として部品点数を少なくし、コストダウンを図ることができる。
【００４１】
また、金属製の釦復帰スプリングを不要とすることから、ほとんどの部品を樹脂材料としてリサイクル性を高めることができる。
【図面の簡単な説明】
【図１】この発明による噴出器用の往復ポンプであり、その噴射釦を押し下げていない不使用状態における縦断面図を示す。
【図２】その部分拡大縦断面図を示す。
【図３】その往復ポンプの外観図を示す。
【図４】使用時にその噴射釦を押し下げた状態における縦断面図を示す。
【図５】従来のこの種の往復ポンプであり、使用時にその噴射釦を押し下げた状態における縦断面図を示す。
【図６】その噴射釦を押し下げていない不使用状態における縦断面図を示す。
【符号の説明】
１０ ポンプ本体
１１ 中筒部
１１ａ シリンダ穴
２２ 噴射釦
２２ｂ ピストン部
２２ｄ 噴出口
２２ｆ 連通孔
２５ 容器
２５ａ 容器の口部
Ａ 加圧室
Ｂ 空気室[0001]
BACKGROUND OF THE INVENTION
The present invention can be applied to an ejector that discharges the contents stored in a container, for example, cosmetic, medicinal, glossy, lubricating, and coating. Specifically, the present invention relates to a reciprocating pump for an ejector that is attached to a container mouth of such an ejector and discharges the contents in the container from an ejection port of the ejection button when the injection button is pushed down.
[0002]
[Prior art]
Conventionally, for example, as shown in FIG. 6, this type of reciprocating pump p is attached to the mouth portion 1 a of the ejector container 1.
[0003]
When in use, the injection button 3 of the reciprocating pump p is pressed down, and the injection pipe 4 joined integrally with it is pressed against the button return spring 5 to reduce the pressure in the pressurizing chamber a in the cup-shaped cylinder member 6. As the pressure rises above a certain level, the cap-like outlet valve member 7 eventually rises against the urging force of the valve return spring 8, and with further depression of the injection button 3, the slit 7a of the outlet valve member 7 is eventually opened. The pressure chamber a communicates with the discharge passage 3a in the injection button 3, and the contents in the pressure chamber a are discharged from the slit 7a through the discharge passage 3a to the outlet 3c at the tip of the beak-shaped discharge portion 3b of the injection button 3. It was discharged from.
[0004]
Then, as shown in FIG. 5, when the injection button 3 is completely pushed down, the pressure in the pressurizing chamber a is lowered, and thereafter the outlet valve member 7 is lowered by the urging force of the valve return spring 8, and the slit 7a is opened. The communication between the pressurizing chamber a and the discharge passage 3a is cut off, and the discharge of the contents in the pressurizing chamber a from the ejection port 3c is stopped.
[0005]
Next, when the hand is released from the injection button 3, the ejection pipe 4 is pushed up by the urging force of the button return spring 5, and the injection button 3 is returned to the original position shown in FIG. At this time, the pressure in the pressurizing chamber a is reduced, the inlet valve member 9 is opened as shown by the chain line in FIG. 6, and the contents in the ejector container 1 are passed through the suction port 6 a of the cylinder member 6. I was sucking up inside.
[0006]
[Problems to be solved by the invention]
However, in such a conventional reciprocating pump p, as described above, when the hand is released from the injection button 3, the button return spring 5 that returns the injection button 3 to the original position is provided. There were many problems.
[0007]
Accordingly, an object of the present invention is to reduce the number of parts by reducing the number of parts by eliminating the need for a button return spring in the above-described reciprocating pump for an ejector.
[0008]
[Means for Solving the Problems]
Therefore, the invention according to claim 1 is used by being attached to the mouth portion 25a of the container 25 and using the contents in the pressurizing chamber A when the injection button 22 is pushed down, as will be described in the following illustrated embodiment. Is ejected from the ejection port 22d of the ejection button 22 through the ejection pipe 20 , and when the hand is released from the ejection button 22, the ejection button 22 is returned to its original position and the container 25 is placed in the pressurizing chamber A. In the reciprocating pump for the ejector that sucks up the contents inside,
A cylindrical thick part 11 provided with an annular cylinder hole 11a is provided in the pump body 10, the jet pipe 20 is inserted into the cylindrical thick part 11 of the pump main body 10, and the injection button is inserted into the jet pipe 20 22 is provided, and the injection button 22 is provided with a cylindrical piston portion 22b that forms a communication hole 22f that communicates with the inside and outside when the button is pressed down.
An air chamber B is formed to compress the indoor air with the injection button 22 when the injection button 22 is pressed down, and return the injection button 22 with the compressed air pressure in the room when the hand is released from the injection button 22. It is characterized by.
[0011]
During use, when the injection button 22 is pushed down, the air in the air chamber B is compressed by the piston portion 22b of the injection button 22, while when the hand is released from the injection button 22, the compressed air pressure in the air chamber B is used. The piston part 22b is pushed up and the injection button 22 is returned.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view of a reciprocating pump for an ejector according to the present invention in a non-use state in which the injection button is not depressed.
[0015]
Reference numeral 10 in the figure denotes a pump body made of polypropylene or polyethylene. The illustrated pump body 10 includes a relatively long middle cylinder part 11, a relatively short outer cylinder part 12 which is provided in a bowl shape from the middle part of the outer periphery and extends the tip downward, and downward from the lower end part of the middle cylinder part 11. And an inner cylinder portion 13 provided so as to project from the inner cylinder.
[0016]
The middle cylinder part 11 is provided with an annular cylinder hole 11a upward in the thick part. In addition, a plurality of inward projections 11b such as dots or lines are provided in the circumferential direction at substantially the middle position on the inner circumferential surface. The outer cylinder part 12 is provided with an internal thread 12a on the inner periphery. The inner cylinder portion 13 includes an upper large diameter portion 13a and a lower small diameter portion 13b. Between the large diameter part 13a and the middle cylinder part 11, a plurality of through holes 14 penetrating vertically are provided in the circumferential direction.
[0017]
Then, the upper end portion of the elongated pipe 15 is press-fitted and fixed in the small-diameter portion 13b of the inner cylinder portion 13, and a ball-shaped inlet valve member 16 is inserted from above to be placed on the valve seat 13c in the small-diameter portion 13b. Put it on.
[0018]
Next, an injection pipe 20 having an injection button 22 attached to the upper end is inserted into the middle cylinder portion 11 of the pump body 10 from above, and the valve holding member 17 and the outlet valve member 18 attached to the lower end thereof are connected to the inner cylinder portion 13. It puts in the large diameter part 13a.
[0019]
As can be seen from FIG. 2 showing the enlarged view, the illustrated valve holding member 17 has three ring-shaped stepped portions on the outer periphery, and sequentially decreases from the bottom to the ring portion 17a, the ring portion 17b, and the cylinder. A portion 17c and a rod portion 17d are provided. A knurled groove 17e is formed on the outer peripheral surface of the ring portion 17a, and a vertical groove 17f is formed on the outer peripheral surface of the rod portion 17d.
[0020]
The illustrated outlet valve member 18 is provided with an elastic inner cylindrical portion 18a and an elastic outer cylindrical portion 18b, as can be seen from FIG. A plurality of longitudinal grooves 18c are provided in the circumferential direction on the inner circumferential surface of the elastic inner cylinder portion 18a, while the elastic outer cylinder portion 18b gradually increases in diameter in the vertical direction.
[0021]
Then, the cylindrical portion 17 c of the valve holding member 17 is inserted into the elastic inner cylindrical portion 18 a without looseness, and the rod portion 17 d of the valve holding member 17 is press-fitted into the lower end portion of the ejection pipe 20. As a result, the outlet valve member 18 moves up and down between the ejection pipe 20 and the valve holding member 17 while pressing the upper end of the elastic inner cylinder portion 18a against the inner peripheral surface of the lower end portion of the ejection pipe 20 and holding the liquid-tight space therebetween. Provide to do.
[0022]
Then, the valve holding member 17 and the outlet valve member 18 are pushed into the middle cylinder part 11 of the pump body 10, and the lower end part of the elastic outer cylinder part 18b is put into the large diameter part 13a of the inner cylinder part 13, When the upper end portion of the elastic outer cylinder portion 18b gets over the inward projection 11b, the valve holding member 17 is returned by the pressure in the pressurizing chamber A, and the stepped portion on the ring portion 17b becomes the lower end of the elastic inner cylinder portion 18a. The outlet valve member 18 is also returned, and the upper end of the elastic outer cylinder portion 18b is abutted against the inward projection 11b and stopped.
[0023]
Thereby, the upper end part of the elastic outer cylinder part 18b is pressed against the inner peripheral surface of the intermediate cylinder part 11, the lower end part is pressed against the inner peripheral surface of the large diameter part 13a of the inner cylinder part 13, and the elastic inner cylinder part The lower end of 18a is applied to the stepped portion on the ring portion 17b of the valve holding member 17, and the space between them is always kept liquid-tight. Then, the inner cylinder portion 13 is partitioned by the inlet valve member 16, the valve holding member 17 and the outlet valve member 18 described above, and the pressurizing chamber A is formed in the inner cylinder portion 13.
[0024]
By the way, as shown in FIG. 1, the ejection pipe 20 is press-fitted into the central short cylinder part 22 a of the injection button 22 and is concentrically accommodated in the middle cylinder part 11 of the pump body 10.
[0025]
The injection button 22 is provided with a long cylindrical piston portion 22b around the short cylindrical portion 22a and extending downward, and a bevel-shaped injection portion 22c protruding in one direction from the outer periphery of the upper portion. A discharge passage 22e is formed to connect the jet outlet 22d at the tip of the jet part 22c and the inside of the jet pipe 20.
[0026]
Then, the piston part 22b is inserted into the cylinder hole 11a of the middle cylinder part 11 of the pump body 10, the inside of the cylinder hole 11a is closed with the piston part 22b, and an air chamber B is formed there, and the short cylinder part 22a The lower end portion is provided in a state of being slightly inserted into the middle tube portion 11.
[0027]
As shown in the drawing, one or a plurality of communication holes 22f are provided in the piston portion 22b inserted into the cylinder hole 11a.
[0028]
In this reciprocating pump, as shown in FIG. 3, the pipe 15 is inserted into the container 25 of the ejector from the mouth portion 25a, and a part of the middle cylinder portion 11 is also inserted into the mouth portion 25a. A male screw on the outer periphery of 25a is screwed onto a female screw 12a on the inner periphery of the outer cylinder portion 12, and is used by being attached to the mouth portion 25a.
[0029]
At this time, the packing 26 shown in FIG. 1 is compressed between the pump body 10 and the upper end of the mouth portion 25a to prevent the contents in the container 25 from leaking out of the container through the screwed portion.
[0030]
In the container 25, for example, contents such as cosmetic, medicinal, glossy, lubricating, and coating are formed in a liquid form, cream form, milk form, or the like.
[0031]
Now, when using the ejector to which this reciprocating pump is attached, the user presses the injection button 22 while pressing the injection button 22 while compressing the air in the air chamber B. Then, the jet pipe 20 and the valve holding member 17 integrated therewith are pushed in, and the step on the ring portion 17 b of the valve holding member 17 is separated from the lower end of the elastic inner cylinder portion 18 a of the outlet valve member 18. 2 is immediately applied to the upper end of the elastic inner cylindrical portion 18a of the outlet valve member 18, and the outlet valve member 18 is also pushed down to increase the volume in the pressurizing chamber A. Decrease.
[0032]
As a result, the contents in the pressurizing chamber A can be transferred from the knurled groove 17e on the outer periphery of the ring portion 17a of the valve holding member 17 to the elastic portion of the stepped portion on the ring portion 17b of the valve holding member 17 and the outlet valve member 18. It passes through the gap between the lower ends of the cylindrical portion 18a, passes through the vertical groove 18c on the inner periphery of the elastic inner cylindrical portion 18a of the outlet valve member 18 and passes through the vertical groove 17f on the outer periphery of the rod portion 17d of the valve holding member 17 and is extruded into the ejection pipe 20. It is. Then, the gas enters the discharge passage 22e through the jet pipe 20, and is discharged from the jet outlet 22d through the discharge passage 22e.
[0033]
Then, when the injection button 22 is further pushed down, the upper end of the large diameter portion 13a of the inner cylinder portion 13 eventually pushes up the upper end portion of the elastic outer cylinder portion 18b of the outlet valve member 18 and The pressing is released, and the inside of the middle cylinder portion 11 communicates with the inside of the container 25 through the through hole 14. Originally, the inside of the middle cylinder portion 11 communicates with the outside through the communication hole 22f in the cylinder hole 11a, so that the inside of the container 25 eventually communicates with the outside and becomes atmospheric pressure.
[0034]
As shown in FIG. 4, when the injection button 22 is completely pushed in and then released, the injection button 22 is pushed up together with the discharge pipe 20 and the valve holding member 17 by the compressed air pressure in the air chamber B. Then, the step on the ring portion 17b is applied to the lower end of the elastic inner cylinder portion 18a to return the outlet valve member 18, the upper end of the elastic outer cylinder portion 18b is abutted against the inward projection 11b, and the original shown in FIG. Return to position. At this time, the pressure in the pressurizing chamber A decreases, and the inlet valve member 16 opens from the pressure difference with the atmospheric pressure in the container 25, and the contents in the container 25 pass through the pipe 15 to enter the inside of the pressurizing chamber A. Suck it up.
[0035]
By repeating this operation, the contents can be discharged from the ejection port 22d each time the injection button 22 is put in a hand and pushed down.
[0036]
Incidentally, in the illustrated example, an annular cylinder hole 11 a is provided in the thick portion of the middle cylinder portion 11 of the pump body 10. However, the cylinder hole 11a is not limited to an annular shape, and a plurality of cylinder holes 11a may be provided. The piston portion 22b of the injection button 22 to be inserted into the cylinder hole 11a is not limited to the long cylindrical shape, and may be a plurality of arc shapes, round bar shapes, or the like according to the hole shape of the cylinder hole 11a.
[0037]
In the illustrated example, the piston portion 22b is provided integrally with the injection button 22 by integral molding using the same material. However, it may be made separately and fixed to the injection button by, for example, press-fitting, bonding, screwing or the like.
[0038]
Moreover, the pump main body 10 and the injection button 22 in the illustrated example are merely examples, and are not limited to such shapes. The inlet valve member 16 is not limited to the ball shape, and may be provided so as to open and close, for example, a plate shape as shown in FIGS. 5 and 6, which is conventionally used. .
[0039]
Further, the outlet valve member 18 used in the illustrated example functions to seal the pressurizing chamber A in the closed state, and when opened, guides the contents in the pressurizing chamber A toward the spout 22d, except for the spout 22d. For preventing the contents from leaking out, and for bringing the inside of the container 25 into atmospheric pressure when the injection button 22 is pushed down to a certain point. However, some of these functions may be performed by other members.
[0040]
【The invention's effect】
Therefore, according to the present invention, when in use, when the injection button is pressed down, the air in the air chamber is compressed by the injection button, and when the hand is released from the injection button, the injection button is returned by the compressed air pressure in the air chamber. Therefore, the button return spring which has been conventionally used is not required, the number of parts is reduced, and the cost can be reduced.
[0041]
Further, since the metal button return spring is not required, the recyclability can be improved by using almost all parts as a resin material.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a reciprocating pump for an ejector according to the present invention in a non-use state in which an injection button is not depressed.
FIG. 2 shows a partially enlarged longitudinal sectional view thereof.
FIG. 3 shows an external view of the reciprocating pump.
FIG. 4 shows a longitudinal sectional view in a state where the injection button is pushed down during use.
FIG. 5 is a longitudinal sectional view of a conventional reciprocating pump of this type in a state where its injection button is pushed down during use.
FIG. 6 shows a longitudinal sectional view in a non-use state in which the injection button is not pushed down.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Pump main body 11 Middle cylinder part 11a Cylinder hole 22 Injection button 22b Piston part 22d Outlet 22f Communication hole 25 Container 25a Container opening A Pressurization chamber B Air chamber

Claims (1)

容器の口部に取り付けて使用し、噴射釦を押し下げたとき加圧室内の内容物を噴出管を通して前記噴射釦の噴出口から吐出する一方、該噴射釦から手を離したときその噴射釦を元の位置に復帰して前記加圧室内に前記容器内の内容物を吸い上げる噴出器用の往復ポンプにおいて、
環状のシリンダ穴を設ける筒状肉厚部をポンプ本体に設け、そのポンプ本体の前記筒状肉厚部内に前記噴出管を挿入し、その噴出管に前記噴射釦を取り付け、その噴射釦に、それを押し下げたとき、内外を連通する連通孔を形成する筒状のピストン部を設け、
そのピストン部を前記ポンプ本体の前記シリンダ穴に挿入して、前記噴射釦を押し下げたときその噴射釦で室内の空気を圧縮する一方、前記噴射釦から手を離したとき室内の圧縮空気圧で該噴射釦を復帰する空気室を形成してなる、噴出器用の往復ポンプ。When attached to the mouth of the container and used, when the injection button is pushed down, the contents in the pressurized chamber are discharged from the injection port of the injection button through the injection pipe, while the release button is released when the hand is released. In the reciprocating pump for the ejector that returns to the original position and sucks the contents in the container into the pressurized chamber,
A cylindrical thick part providing an annular cylinder hole is provided in the pump body, the ejection pipe is inserted into the cylindrical thick part of the pump body, the injection button is attached to the ejection pipe, and the injection button is When it is pushed down, a cylindrical piston part is formed that forms a communication hole that communicates inside and outside,
The piston portion is inserted into the cylinder hole of the pump body, and when the injection button is pressed down, the indoor air is compressed by the injection button, while when the hand is released from the injection button, the compressed air pressure in the room A reciprocating pump for an ejector that forms an air chamber for returning an injection button.
JP14582897A 1997-05-20 1997-05-20 Reciprocating pump for ejector Expired - Fee Related JP3889853B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14582897A JP3889853B2 (en) 1997-05-20 1997-05-20 Reciprocating pump for ejector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14582897A JP3889853B2 (en) 1997-05-20 1997-05-20 Reciprocating pump for ejector

Publications (2)

Publication Number Publication Date
JPH10318125A JPH10318125A (en) 1998-12-02
JP3889853B2 true JP3889853B2 (en) 2007-03-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP14582897A Expired - Fee Related JP3889853B2 (en) 1997-05-20 1997-05-20 Reciprocating pump for ejector

Country Status (1)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4121804B2 (en) * 2002-08-09 2008-07-23 タクボエンジニアリング株式会社 Syringe pump for paint supply
CN109649819A (en) * 2019-01-15 2019-04-19 兴必盛塑业(南通)有限公司 A kind of pump assembly and the container with content discharge function

Also Published As

Publication number Publication date
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