JP3556342B2

JP3556342B2 - Liquid dispensing pump

Info

Publication number: JP3556342B2
Application number: JP21264695A
Authority: JP
Inventors: 岸　　隆生; 和仁桑原
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 1995-07-27
Filing date: 1995-07-27
Publication date: 2004-08-18
Anticipated expiration: 2015-07-27
Also published as: JPH0940000A

Description

【０００１】
【発明の属する技術分野】
本発明は液体注出ポンプに関する。
【０００２】
【従来の技術】
従来液体注出ポンプとして、図１０に示す如く、ノズル５０を前方へ突出した押し下げヘッド５１を押し下げることにより内部のポンプ機構の作用で装着した容器体５２内の液をノズル先端から注出する液体注出ポンプが知られている（尚、図１０は、ヘッド５１を押し下げて螺着係止させた状態を示し、使用時には螺脱して上方へ突出させる。）。
【０００３】
また、これらのポンプの先端に、液圧で開口可能なスリットを穿設した弾性閉塞板を備えたマウスピース５３を嵌着固定して、ノズル内の液の乾燥を防止することが行われている。
【０００４】
例えば、図１０に示す如く、ノズル５０の先端外周に基端部を嵌着させた嵌合筒５４の先端を、弾性閉塞板５５で閉塞し、この弾性閉塞板５５に液圧で開口するスリット５６を設けたものがある。
【０００５】
従来のポンプに於けるこれらマウスピース５３はその弾性閉塞板５５の向きが斜め下方に向いており、また、閉塞板は弾性復元力を増加させて出来るだけ速く閉じて液切れが良くなる様に、内方へドームに凹んだ形状に形成している。
【０００６】
そして、ヘッド５１を押し下げることにより、ノズル５０先端に導入された液の液圧でスリット５０が開口し、液が外部へ注出される。一方、ヘッドの上昇時には弾性閉塞板５５の弾性復元力により直ちにスリット５６が閉塞してノズル内外が遮断される如く構成している。
【０００７】
【発明が解決しようとする課題】
上記従来のポンプでは、液の注出時のみスリット５６が開口するため、ノズル５０内の液が乾燥することを防止できる優れた効果を発揮できるものではあるが、閉塞板５５外面下部の凹んだ部分に液が付着残存してしまうという不都合が生じる虞があった。これらの付着液が乾燥固化すると外観を損ねるばかりか、甚だしい場合には弁機能を阻害する虞も生じる。
【０００８】
本発明はこの様な従来ポンプを改良したもので、従来通りのノズル内の乾燥防止効果を発揮できるとともに、閉塞板部外面への液の残存を防止できる優れたポンプを提案するものである。
【０００９】
【課題を解決するための手段】
本請求項１発明ポンプは上記課題を解決するため、容器体に装着して使用するとともに、容器体上部に上下動可能に突出させたステム上端にノズル付き押し下げヘッドを固定したポンプであって、ヘッドの押し下げにより内部のポンプ機構の作用で前方へ突出したノズル先端より液を注出する如く構成してなる液体注出ポンプに於いて、上記ノズル５先端にマウスピース７を嵌着固定してなり、該マウスピース７は、ノズル先端に基端部を液密嵌合させるとともに、先端縁を下方へ向けて水平に位置させた筒部８を有し、該筒部先端の水平環状周縁部より上方へドーム状に突出して先端開口を閉塞する弾性閉塞板部９を一体に延設し、該弾性閉塞板部９中央に液圧で開口可能なスリット１０を穿設してなることを特徴とする液体注出ポンプとして構成した。
【００１０】
また、請求項２発明のポンプは、上記スリット１０が閉塞板部９中央より放射状に且つ三方に延びるスリット１０である請求項１記載の液体注出ポンプとして構成した。
【００１１】
【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。
本発明ポンプ１は、容器体２に装着して使用する。
【００１２】
例えば、図１に示す如く、容器体２の口頚部外周に嵌合させた装着キャップ３により容器体２に固定し、装着キャップ３上方に上方付勢状態で上下動可能に突出したステム４上端にノズル５付きの押し下げヘッド６を嵌着固定している。そして、ヘッド６を押し下げることにより、容器体内の液をノズル５先端より注出する如く構成した公知のポンプ機構を備えたものである。尚、図１に於けるポンプは、ヘッド６を押し下げて公知の係止手段により螺着係止させた状態を示し、使用時には螺脱して上方へ突出させる。
【００１３】
本発明のポンプ１は、このノズル５先端に特殊構成のマウスピース７を嵌着固定させて構成している。
【００１４】
このマウスピース７はシリコンゴム等の柔軟で弾力性に富む材質より形成されたもので、ノズル５の先端に基端部を液密に嵌着固定させるとともに、先端縁を下方へ向けて水平に位置させた筒部８を有し、該筒部８先端の水平環状周縁部より上方へドーム状に突出して先端開口部を閉塞する弾性閉塞板部９を一体に延設し、更に、この閉塞板部９中央部には液圧で開口するスリット１０を穿設して構成している。
【００１５】
図１及び図２に示す実施例では、ノズル５の先端部分が下方へ傾斜下降して構成されている。また、マウスピース７は、ノズル５の先端外面に基端部を液密に嵌着固定させるとともに、先端部を前面から後面に亘って漸次傾斜下降する垂壁部８ａに形成して筒部８を構成し、該筒部８先端の水平円形縁部より上方へ、球面状に突出する薄肉の弾性閉塞板部９を延設し、この弾性閉塞板部９中央にスリット１０を穿設している。スリット１０は、図２に示す如く、中央より放射状に且つ等離間角度をもって三方に延びる如く構成している。
【００１６】
尚、スリット１０は上記構成に限らず、図４に示す如く、十字形のものであっても、或いは放射状に５本以上穿設したものであっても良いが、図２の如き３本のものが最も好ましい。
【００１７】
図３及び図４に示す実施例では、上記垂壁部８ａの部分を薄肉部１１に形成して、その部分が液圧で外方へ若干の膨出が可能に構成し、閉塞板部９に掛かる液圧を均一にする如く構成したものである。
【００１８】
また、図５及び図６に示す実施例では、閉塞板部９周縁部に隣接する筒部８の連接角度を均一にし且つその部分を薄肉部１１に構成して同様に液圧を均一にする如く構成したものである。
【００１９】
また、筒部８先端の水平環状周縁部は上記した水平円形縁部に限らず、水平楕円状縁部であっても良く、この場合には弾性閉塞板部９が楕円ドーム状となる。例えば、図７及び図８に示す実施例の如く、垂壁部を設けないで筒部先端縁を楕円状に形成し、この筒壁先端縁部より楕円ドーム状の弾性閉塞板部９を延設している。
【００２０】
また、図９に示すものは、上記図７の実施例に於いて、前面より後面に順次傾斜下降する薄肉部１１を形成して、同様に弾性閉塞板部９に掛かる液圧を均一化させる如く構成している。
【００２１】
上記の如く構成したポンプ１は、例えば図１の状態からステム４の押し下げ係止状態（公知の螺着係止手段）を解除してヘッド６をその上方付勢力により上方へ突出させ、次いで、ヘッド６を押し下げるとノズル５先端に導入された液の圧力によりスリット１０が開き、液が外部へ注出される。この際、弾性閉塞板部９はその周縁部が水平で、中央部にスリット１０を形成しているため、注出液は真下に注出され、閉塞板部外面に付着残留することはない。また、ヘッドが上昇する際には弾性閉塞板部９の弾性復元力により直ちにスリット１０を閉じノズル５内外を遮断する。
【００２２】
【発明の効果】
以上説明した如く本発明ポンプは、ノズル先端に基端部を液密嵌合させるとともに、先端縁を下方へ向けて水平に位置させた筒部を有し、該筒部先端の水平環状周縁部より上方へドーム状に突出して先端開口を閉塞する弾性閉塞板部を一体に延設し、その中央に液圧で開口可能なスリットを穿設したマウスピースを設けたので、即ち、弾性閉塞板部は真下を向き、しかもその中央にスリットを設けたので、液の注出の後、閉塞板部外面に液が付着残留することを防止でき、その結果、閉塞板部外面に固化した液が付着して外観を損なう虞もなく、また、固化した液によるスリットの作動不良を引き起こす虞もない。
【００２３】
また、スリットを中央より放射状にかつ三方に穿設したものにあっては、スリット開口時の弾性閉塞板部の引っ掛かりを極力防止できるとともに、良好な弾性復元力を発揮してスリット開口の閉塞を迅速に行える効果を伴う。
【図面の簡単な説明】
【図１】本発明の一実施例を示す一部切欠き要部側面図である。
【図２】同実施例のマウスピース部分の要部底面図である。
【図３】本発明の他の実施例を示すマウスピース部分の要部縦断面図である。
【図４】同実施例のマウスピース部分の要部底面図である。
【図５】本発明の更に他の実施例を示すマウスピース部分の要部縦断面図である。
【図６】同実施例のマウスピース部分の要部底面図である。
【図７】本発明の更に他の実施例を示すマウスピース部分の要部縦断面図である。
【図８】同実施例のマウスピース部分の底面図である。
【図９】本発明の更に他の実施例を示すマウスピース部分の要部縦断面図である。
【図１０】従来のポンプの一例を示す一部切欠き要部側面図である。
【符号の説明】
５…ノズル，７…マウスピース，８…筒部，９…弾性閉塞板部，
１０…スリット[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a liquid dispensing pump.
[0002]
[Prior art]
As a conventional liquid pouring pump, as shown in FIG. 10, a liquid in which a liquid in a container body 52 attached by the action of an internal pump mechanism is pushed out by pushing down a pushing-down head 51 that protrudes a nozzle 50 forward from a nozzle tip. A pouring pump is known (FIG. 10 shows a state in which the head 51 is pushed down and screwed and locked, and when used, is screwed out and protruded upward).
[0003]
Further, a mouthpiece 53 having an elastic closing plate provided with a slit capable of being opened by hydraulic pressure is fitted and fixed to the tip of these pumps to prevent drying of the liquid in the nozzle. I have.
[0004]
For example, as shown in FIG. 10, the distal end of a fitting cylinder 54 having a proximal end fitted to the outer periphery of the distal end of a nozzle 50 is closed by an elastic closing plate 55, and a slit opened to the elastic closing plate 55 by hydraulic pressure. There is one provided with 56.
[0005]
These mouthpieces 53 in the conventional pump have the elastic closing plate 55 oriented obliquely downward, and the closing plate is closed as quickly as possible by increasing the elastic restoring force so that the drainage is improved. , Are formed in a shape recessed in the dome inward.
[0006]
When the head 51 is pushed down, the slit 50 is opened by the liquid pressure of the liquid introduced to the tip of the nozzle 50, and the liquid is poured out. On the other hand, when the head is lifted, the slit 56 is immediately closed by the elastic restoring force of the elastic closing plate 55, so that the inside and outside of the nozzle are shut off.
[0007]
[Problems to be solved by the invention]
In the above-described conventional pump, the slit 56 is opened only when the liquid is poured out, so that it is possible to exhibit an excellent effect of preventing the liquid in the nozzle 50 from drying. There is a possibility that the liquid may adhere to the portion and remain. When these adhered liquids are dried and solidified, not only does the appearance deteriorate, but in extreme cases, the valve function may be impaired.
[0008]
The present invention is an improvement of such a conventional pump, and proposes an excellent pump which can exhibit the same effect of preventing the drying of the inside of the nozzle as the conventional one and can prevent the liquid from remaining on the outer surface of the closing plate.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention pump is a pump in which a press-down head with a nozzle is fixed to an upper end of a stem protrudably movably mounted on an upper part of a container body, while being used by being mounted on a container body, In a liquid injection pump configured to discharge liquid from the tip of a nozzle protruding forward by the action of an internal pump mechanism when the head is pressed down, a mouthpiece 7 is fitted and fixed to the tip of the nozzle 5. The mouthpiece 7 has a cylindrical portion 8 whose base end is liquid-tightly fitted to the tip of the nozzle, and whose distal end edge is positioned horizontally with the distal end directed downward, and a horizontal annular peripheral portion at the distal end of the cylindrical portion. An elastic closing plate portion 9 that protrudes upward in a dome shape and closes the tip opening is integrally extended, and a slit 10 that can be opened by hydraulic pressure is formed in the center of the elastic closing plate portion 9. Liquid pump and It was constructed Te.
[0010]
The pump according to the second aspect of the present invention is configured as the liquid discharge pump according to the first aspect, wherein the slit is a slit extending radially and three-way from the center of the closing plate portion.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The pump 1 of the present invention is used by being mounted on a container body 2.
[0012]
For example, as shown in FIG. 1, the upper end of a stem 4 fixed to the container body 2 by a mounting cap 3 fitted to the outer periphery of the mouth and neck of the container body 2, and protruded upwardly in a upwardly biased state above the mounting cap 3. A press-down head 6 with a nozzle 5 is fitted and fixed thereto. Then, a known pump mechanism is provided which is configured so that the liquid in the container is discharged from the tip of the nozzle 5 by pushing down the head 6. The pump shown in FIG. 1 shows a state in which the head 6 is pushed down and screwed and locked by a known locking means. In use, the pump is unscrewed and protruded upward.
[0013]
The pump 1 of the present invention is configured such that a mouthpiece 7 having a special configuration is fitted and fixed to the tip of the nozzle 5.
[0014]
The mouthpiece 7 is made of a flexible and highly resilient material such as silicone rubber. The mouthpiece 7 has a proximal end liquid-tightly fitted and fixed to the distal end of the nozzle 5 and the distal end edge is horizontally directed downward. An elastic closing plate portion 9 having a cylindrical portion 8 positioned therein and projecting upward in a dome shape from the horizontal annular peripheral portion at the distal end of the cylindrical portion 8 and closing the opening at the distal end is integrally provided. A slit 10 which is opened by hydraulic pressure is formed in the center of the plate 9.
[0015]
In the embodiment shown in FIGS. 1 and 2, the tip of the nozzle 5 is configured to be inclined downward and downward. The mouthpiece 7 has a proximal end liquid-tightly fitted and fixed to the outer surface of the distal end of the nozzle 5, and the distal end is formed in a vertical wall portion 8 a that is gradually inclined downward from the front surface to the rear surface to form a cylindrical portion 8. A thin elastic closing plate 9 projecting spherically is extended above the horizontal circular edge at the tip of the cylindrical portion 8, and a slit 10 is formed in the center of the elastic closing plate 9. I have. As shown in FIG. 2, the slit 10 is formed so as to extend radially from the center and in three directions at an equal separation angle.
[0016]
The slit 10 is not limited to the above-described configuration, and may have a cross shape as shown in FIG. 4 or may have five or more radially pierced holes, as shown in FIG. Those are most preferred.
[0017]
In the embodiment shown in FIGS. 3 and 4, the portion of the vertical wall portion 8a is formed in the thin portion 11 so that the portion can be slightly swelled outward by hydraulic pressure. This is configured to make the hydraulic pressure applied to the pressure uniform.
[0018]
Further, in the embodiment shown in FIGS. 5 and 6, the connecting angle of the cylindrical portion 8 adjacent to the peripheral edge of the closing plate portion 9 is made uniform, and the portion is formed into the thin portion 11 to make the hydraulic pressure uniform as well. The configuration is as follows.
[0019]
The horizontal annular peripheral edge at the tip of the cylindrical portion 8 is not limited to the horizontal circular edge described above, but may be a horizontal elliptical edge. In this case, the elastic closing plate 9 has an elliptical dome shape. For example, as in the embodiment shown in FIGS. 7 and 8, the distal end of the cylindrical portion is formed in an elliptical shape without the vertical wall portion, and the elastic closing plate portion 9 having an elliptical dome shape is extended from the distal end of the cylindrical wall. Has been established.
[0020]
In the embodiment shown in FIG. 9, in the embodiment of FIG. 7, a thin portion 11 which is gradually inclined downward from the front surface is formed from the front surface to the rear surface, and similarly, the hydraulic pressure applied to the elastic closing plate portion 9 is made uniform. It is configured as follows.
[0021]
The pump 1 configured as above releases, for example, the push-down locking state of the stem 4 (known screw locking means) from the state shown in FIG. 1 and causes the head 6 to protrude upward by its upward urging force, When the head 6 is pushed down, the slit 10 is opened by the pressure of the liquid introduced to the tip of the nozzle 5, and the liquid is discharged to the outside. At this time, since the peripheral edge portion of the elastic closing plate portion 9 is horizontal and the slit 10 is formed in the center portion, the liquid to be poured is poured directly below, and does not adhere to and remain on the outer surface of the closing plate portion. When the head is lifted, the slit 10 is immediately closed by the elastic restoring force of the elastic closing plate portion 9 to shut off the inside and outside of the nozzle 5.
[0022]
【The invention's effect】
As described above, the pump of the present invention has a tubular portion having a base end liquid-tightly fitted to a nozzle tip and a horizontally positioned distal end edge directed downward, and a horizontal annular peripheral portion at the distal end of the tubular portion. An elastic closing plate portion projecting upward in a dome shape and closing the tip opening is integrally extended, and a mouthpiece provided with a slit which can be opened by hydraulic pressure is provided at the center thereof, that is, an elastic closing plate. The part faces directly below and has a slit in the center, so that after the liquid is poured out, it is possible to prevent the liquid from adhering and remaining on the outer surface of the closing plate, and as a result, the liquid solidified on the outer surface of the closing plate is removed. There is no danger that the appearance will be impaired due to the adhesion, and there is no danger of malfunctioning of the slit caused by the solidified liquid.
[0023]
Also, in the case where the slit is formed radially and three-way from the center, it is possible to prevent the elastic closing plate portion from being caught at the time of opening the slit as much as possible, and exhibit a good elastic restoring force to close the slit opening. With the effect that can be done quickly.
[Brief description of the drawings]
FIG. 1 is a side view, partially cut away, showing a main part of an embodiment of the present invention.
FIG. 2 is a bottom view of a main part of a mouthpiece portion of the embodiment.
FIG. 3 is a longitudinal sectional view of a main part of a mouthpiece showing another embodiment of the present invention.
FIG. 4 is a bottom view of a main part of a mouthpiece portion of the embodiment.
FIG. 5 is a longitudinal sectional view of a main part of a mouthpiece portion showing still another embodiment of the present invention.
FIG. 6 is a bottom view of a main part of the mouthpiece portion of the embodiment.
FIG. 7 is a longitudinal sectional view of a main part of a mouthpiece portion showing still another embodiment of the present invention.
FIG. 8 is a bottom view of the mouthpiece portion of the embodiment.
FIG. 9 is a longitudinal sectional view of a main part of a mouthpiece portion showing still another embodiment of the present invention.
FIG. 10 is a partially cutaway side view showing an example of a conventional pump.
[Explanation of symbols]
5 ... nozzle, 7 ... mouthpiece, 8 ... tube part, 9 ... elastic closing plate part,
10 ... Slit

Claims

A pump that is mounted on the container body and used with a nozzle-pressing head at the upper end of the stem that protrudes upward and downward from the container body. In a liquid injection pump configured to discharge liquid from the nozzle tip, a mouthpiece 7 is fitted and fixed to the tip of the nozzle 5, and the mouthpiece 7 has a base end at the nozzle tip. And a cylindrical portion 8 having a tip end horizontally positioned with its leading edge directed downward, and a dome-shaped projection projecting upward from a horizontal annular peripheral portion at the tip of the tubular portion to close the tip opening. A liquid pouring pump characterized by comprising a closing plate portion (9) integrally extending and a slit (10) which can be opened by hydraulic pressure is formed in the center of the elastic closing plate portion (9).

The liquid dispensing pump according to claim 1, wherein the slit (10) is a slit (10) extending radially and in three directions from the center of the closing plate portion (9).