JP3587938B2

JP3587938B2 - Liquid ejection pump

Info

Publication number: JP3587938B2
Application number: JP20130596A
Authority: JP
Inventors: 岸　　隆生
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 1996-07-10
Filing date: 1996-07-10
Publication date: 2004-11-10
Anticipated expiration: 2016-07-10
Also published as: JPH1024954A

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する。
【０００２】
【従来の技術】
液体噴出ポンプとして、容器体の口頚部外周に嵌合させる装着筒により下端を容器体内に垂下した状態で固定させるシリンダと、該シリンダ内に嵌合させた環状ピストンを下端に連携させて上端をシリンダ上方へ上下動可能に突出さたステムと、ステム上端に嵌着させたノズル付き押し下げヘッドと、上記環状ピストン，ステム，ノズル付き押し下げヘッドから構成される作動部材を常時上方へ付勢させるコイルスプリングとを備え、作動部材を上下動させることにより、容器体内の液を吸い上げてステムよりノズルを介して噴出する如く構成したものが知られている。
【０００３】
これらはまた、作動部材をコイルスプリングの上方付勢力に抗して押し下げた際に、作動部材をシリンダ内上端部に螺着係止可能に構成し、運搬，保管等の不使用時にはコンパクトな状態で行える如く構成している。
【０００４】
【発明が解決しようとする課題】
従来の此の様なポンプ於いて、作動部材の螺着は一般に右螺子（時計回りに回動螺着させる）に構成しており、また、コイルスプリングも右巻きのもの（上部基端から時計回りに回動下降する螺旋状に形成したもの）が使用されている。
従って、作動部材を螺着係止させる際に、コイルスプリングの上端面が回動方向と逆方向に向き、コイルスプリングの上端係止部分或いは下端係止部分の作動部材或いはシリンダ等を損傷するという不都合を生じる場合がある。
【０００５】
本発明はこの様な点を考慮して、作動部材の螺着に際して、コイルスプリングによるその上下端当接部位の損傷の可能性を極力無くし、しかも、簡単な構造の変更でこの様な効果を発揮できる優れた液体噴出ポンプを提案するものである。
【０００６】
【課題を解決するための手段】
本請求項１発明のポンプは上記課題を解決するため、容器体２０の口頚部２１に嵌合させる装着筒３により下端を容器体内に垂下した状態で固定させるシリンダ２と、該シリンダ内に摺動可能に嵌合させた環状ピストン２８を下端に連携させて上端をシリンダ上方へ上下動可能に突出させたステム２９と、該ステム上端に嵌着させたノズル３０付き押し下げヘッド３１と、上記環状ピストン２８，ステム２９，押し下げヘッド３１とで構成される作動部材５を常時上方へ付勢させるコイルスプンリグ６とを備え、上記作動部材５の上下動により装着した容器体内の液を吸い上げてノズル３０より噴出する如く構成するとともに、コイルスプンリグ６の上方付勢力に抗して押し下げた作動部材をシリンダ内上端部に螺着係止可能に構成した液体噴出ポンプに於いて、上記コイルスプンリグ６を作動部材５の螺着回動方向と逆巻きに構成したことを特徴とする液体噴出ポンプとして構成した。
【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。
図面は本発明の一実施例を示し、本発明ポンプ１は、シリンダ２と、装着筒３と、係止部材４と、作動部材５と、コイルスプンリグ６とを備えている。
【０００８】
シリンダ２は、上下端を開口した筒状で、外周上部よりフランジ７を突設し、下端部は縮径してパイプ嵌合様の嵌合筒部８に構成し、該筒部内に上端を嵌着させたパイプ９を容器体内下端部に垂下させる。また、嵌合筒部８内上部には弁座１０及び該弁座上に載置させた玉状弁体１１よりなる吸い込み弁１２を設けており、筒壁上部には外気導入用の吸気孔１３を穿設している。
【０００９】
また、シリンダ２内には、シリンダ内の液の流動性を良くする等の目的で、棒状部材１４を設けている。この棒状部材は、シリンダ２の底壁に下端の筒部１５下面を載置し、筒部１５外面下端からはシリンダ内面に外周縁を嵌合させた短いフランジ１６を突設し、更に、筒部１５には内外を連通させる連通孔１７を穿設している。また、筒部１５の頂板上面からはシリンダ内上部に至る棒状部１８を立設している。また、筒部頂板裏面中央からは吸い込み弁１２の玉状弁体１１の上下動を規制する棒状突起１９を垂設している。
【００１０】
装着筒３は、ポンプを装着する容器体２０の口頚部２１外周に嵌合させることにより、下端を容器体内に垂下させた状態でシリンダ２を容器体に固定させるためのもので、本実施例では、上端より内方へ取り付け用のフランジ２２を突設して構成し、該フランジをシリンダ２の上記フランジ７上面に回動可能に嵌合させ、また、シリンダ上端に嵌着させた係止部材４により抜け出しの防止を図り、シリンダに対して回動可能に設けている。
【００１１】
係止部材４は、シリンダ２の筒壁上端外周に凹凸係合手段を介して抜け出し不能に嵌合させた嵌合筒２３を頂板２４裏面より垂設するとともに、頂板中央に後述するステムを貫通させるための案内筒２５を貫設し、該案内筒の外面下部をシリンダ２内面上部に密接嵌合し、案内筒２５外面上部とシリンダの内面上端間に回り止め２６を形成している。また、案内筒２５内面上部には螺条ａを周設している。そして、シリンダ２を容器体２０内に挿入して、そのフランジ７をパッキン２７を介して口頚部２１上面に載置させ、装着筒３を嵌合させて固定する。
【００１２】
作動部材５は環状ピストン２８と、ステム２９と、ノズル３０付き押し下げヘッド３１とを備えている。
環状ピストン２８はエラストマー等の比較的柔軟で弾力性に富む材質により形成されたもので、本実施例では断面Ｈ状をなし、シリンダ２内面に外周縁の円弧板状部上下端を摺動可能に嵌合させている。
【００１３】
また、ステム２９は、シリンダ内と連通してその中の液をその上方の押し下げヘッド３１に導入させるための導管で、上下端を開口した筒状をなし、その下端部を、ピストン２８内周縁の筒部外側面上部に嵌着固定させ、上端を上記案内筒２５上方に突出させて上下動可能に装着している。また、ステム２９内上部には、弁座３２及び玉状弁体３３とからなる吐出弁３４を設けている。
【００１４】
押し下げヘッド３１はステム２９より導入された液を前端のノズル３０より噴出するとともに、押し下げて内部のポンプ機構を作動させるためのもので、上記ステム２９外周上端に下端を嵌合させた縦筒３５を頂壁３６裏面より垂設するとともに、縦筒３５上部と基端を連通させてノズル３０を前方へ突出して構成している。また、縦筒３５の下部外周には上記案内筒２５内面の螺条ａと螺合する螺条ｂを周設し、作動部材５を押し下げた状態で螺着係止可能に構成している。本実施例では各螺条を右螺子に構成し、即ち、作動部材５を時計回りに回動することにより螺着する如く構成している。
【００１５】
コイルスプンリグ６は金属等により形成され、上記作動部材５を常時上方へ付勢させるためのもので、上記棒状部材１４のフランジ１６上面と、環状ピストン２８の下面との間に介在させている。本発明では、このコイルスプンリグ６を作動部材５の螺着回動方向と逆巻きに構成したものを使用する。即ち、作動部材５の螺着回動方向は上記した右回りであるため、図３に示す如き左巻きのものを使用する。左巻きとは、その上端から時計回りと反対方向に回動下降する螺旋状に形成したもので、本実施例では、上端部及び下端部を２巻程度密に構成している。
【００１６】
この様なコイルスプンリグ６を設けることにより、作動部材を係止部材４に螺着係止させる際、環状ピストン２８下面はコイルスプンリグ６の端面の向きと同方向に回動するため、端面が引っ掛かる等の不都合を生じない様に構成している。尚、作動部材５の係止状態から螺脱する際には回動方向に向かって端面が位置するが、ピストン２８は順次回動上昇するため、端面が引っ掛かる等の不都合は生じない。
【００１７】
上記の如く構成したポンプ１は、容器体２０に装着して使用するが、図１に示す如き状態からヘッド３１を押し下げると、シリンダ２内の液が加圧されて吐出弁３４が開き、ノズル３０より外部に噴出する。また、ヘッド３１の押圧を解除するコイルスプンリグ６の弾発力により作動部材５が上昇し、シリンダ２内が負圧するため、吐出弁３４が閉じ、吸い込み弁１２が開いて容器体内の液がパイプ９を介してシリンダ２内に導入される。
【００１８】
尚、本実施例では、作動部材５が最上昇位置にある場合に、環状ピストン２８内周縁の筒部上端縁が棒状部材１４の棒状部１８上端外周に周設した突条下面に密接シールされ、また、作動部材５の押し下げ係止状態では、図２に示す如く、環状ピストンの上記筒部下端面が棒状部材１４の筒部頂板上面に密接シールされる如く構成している。
また、上記実施例において、特に断りのない限り、各部材は合成樹脂により形成すると良い。
また、本発明は上記実施例に限定されるものではなく、作動部材を螺着係止させ、また、その作動部材をコイルスプリングにより上方付勢させる構造のものであれば、その具体的構成が異なるものであっても採用できる。
【００１９】
【発明の効果】
以上説明した如く本発明液体噴出ポンプは、作動部材の上下動により装着した容器体内の液を吸い上げてノズルより噴出する如く構成するとともに、コイルスプリングの上方付勢力に抗して押し下げた作動部材をシリンダ内上端部に螺着係止可能に構成した押し下げヘッド式のポンプであって、コイルスプリングを作動部材の螺着回動方向と逆巻きに構成したので、運搬，保管等の不使用時に作動部材を螺着係止させる際に、コイルスプリングの端面によりその近傍の係止部分を損傷すの等の不都合を極力防止出来、しかも、コイルスプリングの巻き方向を選択するだけで良いため、従来品と比較して大きな構造の変化の必要がなく、その点に於けるコストアップを伴うことがない。
【図面の簡単な説明】
【図１】本発明の一実施例を示す半断面図である。
【図２】同実施例の作動部材の押し下げ係止状態を示す半断面図である。
【図３】同実施例のコイルスプリングの要部拡大斜視図である。
【符号の説明】
２…シリンダ，３…装着筒，５…作動部材，６…コイルスプリング，
２０…容器体，２１…口頚部，２８…環状ピストン，２９…ステム，３０…ノズル，
３１…押し下げヘッド[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a liquid ejection pump.
[0002]
[Prior art]
As a liquid ejection pump, a cylinder for fixing the lower end in a state of being suspended in the container body by a mounting cylinder fitted to the outer periphery of the mouth and neck of the container body, and an annular piston fitted in the cylinder in cooperation with the lower end to form an upper end. A coil protruding upward and downward from the cylinder, a press-down head with a nozzle fitted to the upper end of the stem, and a coil for constantly urging an operating member composed of the annular piston, the stem, and the press-down head with a nozzle upward. There has been known a device that includes a spring and moves up and down an operating member to suck up liquid in a container body and eject the liquid from a stem via a nozzle.
[0003]
In addition, when the operating member is pressed down against the upward biasing force of the coil spring, the operating member can be screwed and locked to the upper end portion in the cylinder, so that it is compact when not in use such as transportation and storage. It is configured so that it can be performed by.
[0004]
[Problems to be solved by the invention]
In such a conventional pump, the actuating member is generally screwed to the right (to be screwed clockwise), and the coil spring is also clockwise (clockwise from the upper base end). (A spiral formed so as to rotate and descend around).
Therefore, when the operating member is screwed and locked, the upper end surface of the coil spring faces in the direction opposite to the rotation direction, and the operating member or the cylinder at the upper locking portion or the lower locking portion of the coil spring is damaged. It may cause inconvenience.
[0005]
In consideration of such a point, the present invention minimizes the possibility of damage to the upper and lower end contact portions by the coil spring when screwing the operating member, and furthermore, such an effect can be achieved by a simple structure change. It proposes an excellent liquid ejection pump that can be used.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the pump according to the first aspect of the present invention includes a cylinder 2 for fixing the lower end thereof in a state of being suspended in the container body by a mounting cylinder 3 fitted to the mouth and neck portion 21 of the container body 20, and a sliding member inside the cylinder. An annular piston 28 movably fitted to the lower end and a stem 29 having an upper end protruding upward and downward from the cylinder so as to be vertically movable; a press-down head 31 having a nozzle 30 fitted to the upper end of the stem; A coil spun rig 6 that constantly urges the operating member 5 composed of the piston 28, the stem 29, and the press-down head 31 upward. 30 is a liquid that is configured to be ejected from the cylinder 30 and is configured so that an operating member pressed down against the upward urging force of the coil spun rig 6 can be screwed and locked to an upper end portion in the cylinder. In out pump, configured as a liquid jet pump, characterized in that constitute the coil Supun rig 6 to screwing rotation direction opposite winding of the actuating member 5.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The drawings show an embodiment of the present invention. The pump 1 of the present invention includes a cylinder 2, a mounting cylinder 3, a locking member 4, an operating member 5, and a coil spun rig 6.
[0008]
The cylinder 2 has a cylindrical shape with upper and lower ends opened, and a flange 7 protrudes from the outer peripheral upper part. The lower end is reduced in diameter to form a fitting cylindrical part 8 like a pipe fitting. The fitted pipe 9 is suspended from the lower end of the container. Further, a suction valve 12 composed of a valve seat 10 and a ball-shaped valve body 11 mounted on the valve seat is provided in an upper portion of the fitting cylinder portion 8, and an intake hole for introducing outside air is provided in an upper portion of the cylinder wall. 13 are drilled.
[0009]
A rod-shaped member 14 is provided in the cylinder 2 for the purpose of improving the fluidity of the liquid in the cylinder. This rod-shaped member has the lower surface of the lower cylindrical portion 15 placed on the bottom wall of the cylinder 2, and a short flange 16 having an outer peripheral edge fitted to the inner surface of the cylinder protruding from the lower outer surface of the cylindrical portion 15. The portion 15 is provided with a communication hole 17 for communicating the inside and the outside. Further, a rod-shaped portion 18 extending from the upper surface of the top plate of the cylindrical portion 15 to the upper portion in the cylinder is provided. Further, a rod-shaped projection 19 for regulating the vertical movement of the ball-shaped valve element 11 of the suction valve 12 is provided vertically from the center of the rear surface of the cylindrical top plate.
[0010]
The mounting cylinder 3 is used to fix the cylinder 2 to the container body with the lower end of the cylinder body 2 being fitted to the outer periphery of the mouth and neck 21 of the container body 20 to which the pump is mounted. In this configuration, a mounting flange 22 is provided so as to protrude inward from the upper end, and the flange 22 is rotatably fitted to the upper surface of the flange 7 of the cylinder 2, and is also fitted to the upper end of the cylinder. The member 4 is provided so as to be prevented from coming off, and is provided rotatably with respect to the cylinder.
[0011]
The locking member 4 has a fitting tube 23 which is fitted to the outer periphery of the upper end of the cylinder wall of the cylinder 2 via the concave and convex engaging means so as to be unable to come out from the back surface of the top plate 24, and penetrates a stem described later in the center of the top plate. A guide tube 25 is formed through the guide tube 25, and a lower portion of the outer surface of the guide tube is closely fitted to an upper portion of the inner surface of the cylinder 2, and a detent 26 is formed between the upper portion of the outer surface of the guide tube 25 and the upper end of the inner surface of the cylinder. A thread a is provided around the inner surface of the guide cylinder 25. Then, the cylinder 2 is inserted into the container body 20, the flange 7 is placed on the upper surface of the mouth and neck portion 21 via the packing 27, and the mounting cylinder 3 is fitted and fixed.
[0012]
The actuating member 5 comprises an annular piston 28, a stem 29 and a depressing head 31 with a nozzle 30.
The annular piston 28 is formed of a relatively soft and highly elastic material such as an elastomer, and has a H-shaped cross section in this embodiment, and can slide the upper and lower ends of the arc-shaped plate-shaped portion of the outer peripheral edge on the inner surface of the cylinder 2. Is fitted.
[0013]
The stem 29 is a conduit communicating with the inside of the cylinder to introduce the liquid therein to the depressing head 31 above it, and has a cylindrical shape with upper and lower ends opened. Is fitted and fixed to the upper part of the outer surface of the cylindrical part, and the upper end is protruded above the guide cylinder 25 so as to be vertically movable. In addition, a discharge valve 34 including a valve seat 32 and a ball-shaped valve element 33 is provided in an upper portion inside the stem 29.
[0014]
The push-down head 31 is for ejecting the liquid introduced from the stem 29 from the front end nozzle 30 and pushing it down to operate the internal pump mechanism. The vertical cylinder 35 having the lower end fitted to the upper end of the outer periphery of the stem 29 is provided. Are vertically provided from the back surface of the top wall 36, and the upper end of the vertical cylinder 35 is communicated with the base end to project the nozzle 30 forward. A thread b is screwed around the thread a on the inner surface of the guide cylinder 25 on the outer periphery of the lower part of the vertical cylinder 35 so that the operation member 5 can be screwed and locked in a state of being pushed down. In the present embodiment, each screw is formed as a right screw, that is, the operation member 5 is screwed by rotating the operating member 5 clockwise.
[0015]
The coil spun rig 6 is made of metal or the like, and constantly urges the operating member 5 upward, and is interposed between the upper surface of the flange 16 of the rod-shaped member 14 and the lower surface of the annular piston 28. . In the present invention, the coil spun rig 6 is configured to be wound in the reverse direction of the screwing rotation direction of the operating member 5. That is, since the screwing rotation direction of the operating member 5 is clockwise as described above, a left-handed one as shown in FIG. 3 is used. The left-handed winding is formed in a spiral shape that rotates downward from the upper end in the counterclockwise direction. In the present embodiment, the upper end and the lower end are densely formed by about two turns.
[0016]
By providing such a coil spun rig 6, when the operating member is screwed and locked to the locking member 4, the lower surface of the annular piston 28 rotates in the same direction as the direction of the end surface of the coil spun rig 6. Is configured so as not to cause inconvenience such as being caught. When the operating member 5 is unscrewed from the locked state, the end face is positioned in the rotation direction, but since the piston 28 is sequentially turned up, there is no inconvenience such as the end face being caught.
[0017]
The pump 1 configured as described above is used by being attached to the container body 20. When the head 31 is pushed down from the state shown in FIG. 1, the liquid in the cylinder 2 is pressurized, the discharge valve 34 is opened, and the nozzle It spouts out from 30. Further, the operating member 5 is raised by the resilience of the coil spun rig 6 which releases the pressing of the head 31, and the inside of the cylinder 2 is negatively pressed. Therefore, the discharge valve 34 is closed, the suction valve 12 is opened, and the liquid in the container is discharged. It is introduced into the cylinder 2 via a pipe 9.
[0018]
In the present embodiment, when the operating member 5 is at the highest position, the upper end of the cylindrical portion of the inner peripheral edge of the annular piston 28 is tightly sealed to the lower surface of the ridge provided around the upper end of the rod 18 of the rod 14. 2, the lower end surface of the cylindrical portion of the annular piston is tightly sealed to the upper surface of the cylindrical portion top plate of the rod-shaped member 14 when the operating member 5 is held down.
In the above embodiment, unless otherwise specified, each member may be formed of a synthetic resin.
Further, the present invention is not limited to the above-described embodiment, and a specific configuration may be adopted as long as the operating member is screwed and locked and the operating member is biased upward by a coil spring. Different ones can be adopted.
[0019]
【The invention's effect】
As described above, the liquid jet pump according to the present invention is configured so that the liquid in the mounted container is sucked up and spouted from the nozzle by the vertical movement of the operating member, and the operating member pressed down against the upward biasing force of the coil spring. This is a push-down head type pump that is configured to be screw-engaged at the upper end inside the cylinder, and that the coil spring is wound in the reverse direction of the screwing rotation direction of the operating member. When screwing and locking, it is possible to prevent inconveniences such as damaging the nearby locking portion by the end face of the coil spring as much as possible, and it is only necessary to select the winding direction of the coil spring. Compared with this, there is no need for a large structural change, and there is no increase in cost at that point.
[Brief description of the drawings]
FIG. 1 is a half sectional view showing one embodiment of the present invention.
FIG. 2 is a half cross-sectional view showing a push-down locked state of the operating member of the embodiment.
FIG. 3 is an enlarged perspective view of a main part of the coil spring of the embodiment.
[Explanation of symbols]
2 ... cylinder, 3 ... mounting cylinder, 5 ... operating member, 6 ... coil spring,
20 ... container body, 21 ... mouth and neck, 28 ... annular piston, 29 ... stem, 30 ... nozzle
31 ... Depressing head

Claims

The lower end of the cylinder 2 which is fixed to the mouth and neck portion 21 of the container body 20 by being attached to the mouth and neck portion 21 while the lower end is suspended in the container body, and the annular piston 28 which is slidably fitted in the cylinder is linked to the lower end. Actuator comprising a stem 29 whose upper end protrudes vertically above the cylinder, a push-down head 31 with a nozzle 30 fitted to the upper end of the stem, the annular piston 28, the stem 29 and the push-down head 31. A coil spun rig 6 for constantly urging the member 5 upward, wherein the operation member 5 is moved up and down to suck up the liquid in the mounted container body and eject the liquid from the nozzle 30, and The above-described coil spun rig 6 is operated in a liquid jet pump in which an operating member depressed against an urging force can be screwed and locked to an upper end portion in the cylinder. Liquid jet pump, characterized by being configured to screwing rotation direction opposite winding wood 5.