JP5311475B2 - Liquid discharge pump - Google Patents

Liquid discharge pump Download PDF

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Publication number
JP5311475B2
JP5311475B2 JP2009047047A JP2009047047A JP5311475B2 JP 5311475 B2 JP5311475 B2 JP 5311475B2 JP 2009047047 A JP2009047047 A JP 2009047047A JP 2009047047 A JP2009047047 A JP 2009047047A JP 5311475 B2 JP5311475 B2 JP 5311475B2
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cylinder
stem
spring
fitted
discharge pump
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JP2010202211A (en
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義幸 角田
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Yoshino Kogyosho Co Ltd
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Yoshino Kogyosho 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
    • B05B11/1059—Means for locking a pump or its actuation means in a fixed position
    • B05B11/106—Means for locking a pump or its actuation means in a fixed position in a retracted position, e.g. in an end-of-dispensing-stroke position
    • 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
    • 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
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
    • 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
    • B05B11/1074—Springs located outside pump chambers

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  • Closures For Containers (AREA)

Description

本発明は容器内の液体を吐出可能な液体吐出ポンプに関する。   The present invention relates to a liquid discharge pump capable of discharging a liquid in a container.

液体吐出ポンプとして、シリンダ内面に嵌合させた環状ピストンをステム外周下部に突設するとともに、シリンダ上面より上方へ突出したステム上端に噴出ヘッドを嵌着し、シリンダ底壁周縁部に載置した支持筒内に弾性連結片を介して開閉可能に弁板を支持するとともに、弁板を弁座に当接して吸込弁を形成し、支持筒からコイルスプリング支持用の支持台を一体に立設し、該支持台とステム下面との間にコイルスプリングを介在させたものが従来技術として知られている。 As a liquid discharge pump, an annular piston fitted to the inner surface of the cylinder protrudes from the lower portion of the outer periphery of the stem, and an ejection head is fitted to the upper end of the stem protruding upward from the upper surface of the cylinder, and placed on the peripheral portion of the cylinder bottom wall. The valve plate is supported in the support cylinder so that it can be opened and closed via an elastic connecting piece, and the valve plate is brought into contact with the valve seat to form a suction valve. A support base for supporting the coil spring is erected integrally from the support cylinder. In the related art, a coil spring is interposed between the support base and the lower surface of the stem.

特開２００１−３１５８２２号公報JP 2001-315822 A

しかしながら、従来技術はステムを上方付勢するコイルスプリングを支持台とステム下面との間に設けているため、所定のステム付勢力を確保するという観点からコイルスプリングを長くするとシリンダも長くせざるを得ないが、そうするとピストンのストロークに対するシリンダ長の適正な比が得られず、シリンダ内液体に対して充分な加圧力を加えることができない結果となる。シリンダの長さを長くすることなく、言い換えればコイルスプリングを長くすることなく、所定のステム付勢力を得るにはコイルスプリングの径を大にせざるを得ないが、そうすると噴出ヘッドを押下げる際の初期荷重と終点荷重との差を小さくすることができず、使用者にノズルヘッド押下げ力が高いとの評価を与える結果となっていた。また、コイルスプリングは常時液体と接触しているため、コイルスプリングの材質および液体の種類の選定において自由度が制限されていた。さらに、シリンダ底壁周縁部に支持筒を設けているため、ピストンの下降行程に制限があり、したがって、支持筒とシリンダ内面との間隙に液体が残留するという課題がある。
本発明は、上記課題を解決するためになされたもので、ノズルヘッドを押下げる際の初期荷重と終点荷重との差を極力小さくすることができると共に、ステム付勢用のバネ材が液体と接触することがない液体吐出ポンプを提供することを目的とする。 However, in the prior art, a coil spring that urges the stem upward is provided between the support base and the lower surface of the stem. Therefore, if the coil spring is lengthened from the viewpoint of securing a predetermined stem urging force, the cylinder must be lengthened. However, if this is done, an appropriate ratio of the cylinder length to the stroke of the piston cannot be obtained, resulting in insufficient pressure applied to the liquid in the cylinder. In order to obtain a predetermined stem biasing force without increasing the length of the cylinder, in other words, without increasing the length of the coil spring, it is necessary to increase the diameter of the coil spring. The difference between the initial load and the end load could not be reduced, and the result was given to the user that the nozzle head pressing force was high. Further, since the coil spring is always in contact with the liquid, the degree of freedom is limited in selecting the material of the coil spring and the type of liquid. Further, since the support cylinder is provided on the peripheral edge of the cylinder bottom wall, there is a limitation in the downward stroke of the piston, and there is a problem that liquid remains in the gap between the support cylinder and the cylinder inner surface.
The present invention has been made to solve the above-described problem, and can reduce the difference between the initial load and the end load when the nozzle head is pushed down as much as possible, and the stem biasing spring material can be used as a liquid. An object is to provide a liquid discharge pump that does not come into contact.

上記課題を解決するために、本発明は、シリンダ本体１内へ上下動自在に嵌合させた筒状ピストン２０内周から上方付勢されて起立するステム３０上端へノズルヘッド２００を装着し、該ノズルヘッドの押下げでステム内流路３５を介してノズル２０１から液吐出可能に設けた液体吐出ポンプにおいて、
前記筒状ピストン２０下面を閉塞する閉塞部材４０を設けて、該閉塞部材を前記ステム３０下部へ連結させ、
前記筒状ピストン２０より上方のシリンダ本体部分内面に第１バネ受け５２を設けると共に、該第１バネ受けより上方の前記ステム部分外面に第２バネ受け３１を設けて、該第１バネ受けおよび第２バネ受け間にステム付勢用のバネ材６０を設け、
前記ノズルヘッドの押下げで、前記筒状ピストンが下降してシリンダ本体１内液体が前記閉塞部材４０に設けた連通路４６を介して前記ステム内流路３５へ流入可能に設け、
前記シリンダ本体上部内面へ水密に嵌合させた短筒８１内周から密封筒８２を起立して水密筒体８０を形成し、密封筒８２内へ前記ステムを上下動自在に、かつ抜出し不能に水密嵌合させたことを特徴とする。 In order to solve the above-mentioned problem, the present invention attaches the nozzle head 200 to the upper end of the stem 30 that is urged upward from the inner periphery of the cylindrical piston 20 fitted in the cylinder body 1 so as to be movable up and down. In the liquid discharge pump provided so that liquid can be discharged from the nozzle 201 through the flow path 35 in the stem by pressing down the nozzle head,
Providing a closing member 40 for closing the lower surface of the cylindrical piston 20, and connecting the closing member to the lower portion of the stem 30;
The first spring receiving 52 is provided on the cylinder body portion inner surface of the upper than the cylindrical piston 20 and the second spring bearing 31 provided in the stem portion outer surface of the above the said first spring bearing, said first spring bearing and A spring material 60 for biasing the stem is provided between the second spring receivers,
When the nozzle head is pressed down, the cylindrical piston is lowered so that the liquid in the cylinder body 1 can flow into the stem flow path 35 via the communication path 46 provided in the closing member 40;
A sealing cylinder 82 is erected from the inner periphery of a short cylinder 81 that is water-tightly fitted to the upper inner surface of the cylinder body to form a water-tight cylinder 80, and the stem can be moved up and down in the sealing cylinder 82 and cannot be removed. It is characterized by watertight fitting.

また、本発明は、前記第１バネ受けを前記シリンダ本体内面に設けた内向きフランジ５２で構成すると共に、前記第２バネ受けを前記ステム外面に設けた下向き段部３１で構成し、該内向きフランジと下向き段部とシリンダ本体内面とによって画成される空間をステム付勢用のバネ材収納室７０に形成したことを特徴とする。 In the present invention, the first spring receiver is configured by an inward flange 52 provided on the inner surface of the cylinder body, and the second spring receiver is configured by a downward stepped portion 31 provided on the outer surface of the stem. A space defined by the orientation flange, the downward stepped portion, and the inner surface of the cylinder body is formed in the spring material storage chamber 70 for urging the stem.

さらに、本発明は、前記閉塞部材４０は、前記筒状ピストンの本体下端面に設けた下面開口の嵌合溝４１へ嵌合させた嵌合筒４５の底壁上面中央部から連結筒４４を起立して、該連結筒を前記ステム下部内へ嵌合させると共に、該連結筒周面に前記連通路４６を形成したことを特徴とする。 Further, according to the present invention, the closing member 40 has the connecting cylinder 44 from the center part of the upper surface of the bottom wall of the fitting cylinder 45 fitted into the fitting groove 41 of the lower surface opening provided on the lower end surface of the main body of the cylindrical piston. The connecting cylinder is stood up and fitted into the lower portion of the stem, and the communication passage 46 is formed on the peripheral surface of the connecting cylinder.

さらに、本発明は、前記筒状ピストンの本体内周面と前記第１バネ受けを構成する内向きフランジ５２内周とのそれぞれに下側シール筒２２と上側シール筒５３とを設けて、下側シール筒２２を前記ステム外面へ摺動可能に嵌着させると共に、上側シール筒５３をステム３０外面へ摺動自在に嵌合させることで前記バネ材収納室７０への液侵入防止可能に設けたことを特徴とする。 Further, according to the present invention, a lower seal cylinder 22 and an upper seal cylinder 53 are provided on the inner peripheral surface of the main body of the cylindrical piston and the inner periphery of the inward flange 52 constituting the first spring support, respectively. The side seal cylinder 22 is slidably fitted to the outer surface of the stem, and the upper seal cylinder 53 is slidably fitted to the outer surface of the stem 30 so as to prevent liquid from entering the spring material storage chamber 70. It is characterized by that.

さらに、本発明は、前記短筒８１より上方のシリンダ本体部分内面へ前記短筒抜止め用の固定筒体３００を嵌合させて、該固定筒体下端を前記短筒８１上端へ当接させたことを特徴とする。   Further, according to the present invention, the fixed cylinder 300 for retaining the short cylinder is fitted to the inner surface of the cylinder main body above the short cylinder 81, and the lower end of the fixed cylinder is brought into contact with the upper end of the short cylinder 81. It is characterized by that.

本発明は、筒状ピストン２０より上方のシリンダ本体部分内面に第１バネ受けを設けると共に、ステム外面に第２バネ受けを設けたので、これらバネ受け位置の設定の自由度が大きく、したがって、シリンダの長さを長くすることなく一対のバネ受け間の距離を大にすることができるため、バネ材の径を小さくすることができ、よってノズルヘッド押下げの際の押下げ力の初期荷重と終点荷重との差を極力小さくすることができる。 In the present invention, the first spring support is provided on the inner surface of the cylinder main body part above the cylindrical piston 20 and the second spring support is provided on the outer surface of the stem. Since the distance between the pair of spring receivers can be increased without increasing the length of the cylinder, the diameter of the spring material can be reduced, so that the initial load of the pressing force when the nozzle head is pressed down And the end point load can be made as small as possible.

また、本発明は、シール筒を設けてバネ材収納室への液侵入を防止可能に設けたので、バネ材に液体が接触することがなく、したがって、バネ材の材質選定の自由度が増大すると共に、例えば金属の影響を受けやすい液体等についても利用可能となる。   Further, the present invention is provided with a seal cylinder so as to prevent liquid intrusion into the spring material storage chamber, so that the liquid does not come into contact with the spring material, and thus the degree of freedom in selecting the material of the spring material is increased. In addition, for example, a liquid that is easily affected by metal can be used.

さらに、本発明は、筒状ピストンへ有底嵌合筒を嵌合させることにより筒状ピストン下面を閉塞すると共に、第１バネ受けはシリンダ本体内周面に設けているため、有底嵌合筒下面とシリンダ本体底面との間には筒状ピストンの下降を妨げる要素はなく、したがって、ノズルヘッド押下げによるシリンダ本体内の残量を極力少なくすることができる。   Further, the present invention closes the bottom surface of the cylindrical piston by fitting the bottomed fitting cylinder to the cylindrical piston, and the first spring receiver is provided on the inner peripheral surface of the cylinder body. There is no element that hinders the downward movement of the cylindrical piston between the bottom surface of the cylinder and the bottom surface of the cylinder body. Therefore, the remaining amount in the cylinder body due to the nozzle head pressing down can be minimized.

さらに、本発明は、密封筒を設けて、該密封筒内へステムを上下動自在に水密嵌合させているので、シリンダ本体内への水浸入を防止することができる。   Further, according to the present invention, since the sealing cylinder is provided and the stem is watertightly fitted in the sealing cylinder so as to be movable up and down, water intrusion into the cylinder body can be prevented.

さらに、本発明は、シリンダ本体に短筒およびステム抜止め兼用の固定筒体を設けているので、シリンダ本体とステムとを一体化することでモジュール化を図ることができると共に、容器への組付けに際しては、該モジュール品を容器内へ嵌挿するだけでよく、したがって、部品管理および組立が容易である。   Further, according to the present invention, since the cylinder body is provided with the short cylinder and the fixed cylinder body for preventing stem removal, the cylinder body and the stem can be integrated to be modularized and assembled into the container. At the time of attachment, it is only necessary to insert the module product into the container, so that parts management and assembly are easy.

本発明に係る液体吐出ポンプの断面図である。It is sectional drawing of the liquid discharge pump which concerns on this invention. 要部を示す断面図である。It is sectional drawing which shows the principal part. 他の実施形態を示す断面図である。It is sectional drawing which shows other embodiment.

以下、本発明の実施の形態について、図面を参照しながら詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図１はノズルヘッド押下げ前の状態を示すもので、同図において、１はシリンダ本体で、その周壁２底部に吸込み弁３を備えている。吸込み弁３には特に限定はないが、例えば、本実施形態のように周壁２下面を閉塞する底板４の中央部に開口部を設けて、開口部の周縁に弁座５を形成すると共に、弁座５に弁板６を載置し、かつ弁板６と底板４とを図示しないバネで連結して弁板６を下方へ付勢したものを一例として挙げることができる。   FIG. 1 shows a state before the nozzle head is pushed down. In FIG. 1, reference numeral 1 denotes a cylinder body, and a suction valve 3 is provided at the bottom of the peripheral wall 2 thereof. The suction valve 3 is not particularly limited. For example, an opening is provided at the center of the bottom plate 4 that closes the lower surface of the peripheral wall 2 as in the present embodiment, and the valve seat 5 is formed at the periphery of the opening. An example is one in which the valve plate 6 is placed on the valve seat 5 and the valve plate 6 and the bottom plate 4 are connected by a spring (not shown) to bias the valve plate 6 downward.

周壁２の上部は上向き段部７を介して大内径部に形成すると共に、大内径部外面に容器体口頸部８上端へ載置させる外向きフランジ９を付設し、さらに外向きフランジ９より下方の大内径部部分に第１空気導入孔１０を形成すると共に、底板４から吸上げパイプ１１を嵌合させるための垂下筒１２を垂下する。   The upper portion of the peripheral wall 2 is formed in a large inner diameter portion through an upward stepped portion 7, and an outward flange 9 is mounted on the outer surface of the large inner diameter portion on the upper end of the container body neck 8. The first air introduction hole 10 is formed in the lower large inner diameter portion, and the drooping cylinder 12 for fitting the suction pipe 11 from the bottom plate 4 is suspended.

２０は筒状ピストンで、シリンダ本体１の周壁２内面へ上下動自在に嵌合させた筒状のピストン本体の上下両面に環状溝２１を設けて、下側の環状溝を後述の嵌合溝４１に形成すると共に、ピストン本体内周面から内向きフランジを介して下側シール筒２２を垂下する。   Reference numeral 20 denotes a cylindrical piston. An annular groove 21 is provided on both upper and lower surfaces of a cylindrical piston main body which is fitted to the inner surface of the peripheral wall 2 of the cylinder body 1 so as to be movable up and down. The lower seal cylinder 22 is suspended from the inner peripheral surface of the piston body via an inward flange.

３０は筒状ピストン２０内周から起立するステムで、内部に流路３５が形成された中空ステム本体下端部を下側シール筒２２内へ嵌着させると共に、ステム本体の上下方向中間部外面に下向き段部３１を形成して、該下向き段部３１外周から外筒３２を垂設して、外筒３２下端外面に抜止め用の係合段部３３を形成する。   Reference numeral 30 denotes a stem that rises from the inner periphery of the cylindrical piston 20. The lower end of the hollow stem body, in which a flow path 35 is formed, is fitted into the lower seal cylinder 22, and is attached to the outer surface of the intermediate portion in the vertical direction of the stem body. A downward step portion 31 is formed, and an outer cylinder 32 is suspended from the outer periphery of the downward step portion 31 to form an engaging step portion 33 for retaining on the outer surface of the lower end of the outer tube 32.

４０は閉塞部材で、筒状ピストン本体下端面に設けた下面開口の環状溝からなる嵌合溝４１へ嵌合させた嵌合筒４５の底壁４３上面中央部から連結筒４４を起立して、該連結筒４４の上部をステム本体下端部内へ抜出し不能に嵌着させ、さらに連結筒４４周面に上面開口の割溝４６を周方向に間隔をおいて複数形成する。該割溝は筒状ピストン２０下降時に、シリンダ内液体をステム内流路３５へ流入させるためのものである。   Reference numeral 40 denotes a closing member, and the connecting cylinder 44 is erected from the center of the upper surface of the bottom wall 43 of the fitting cylinder 45 fitted to the fitting groove 41 formed of an annular groove having a lower surface opening provided on the lower end surface of the cylindrical piston body. The upper portion of the connecting tube 44 is fitted into the lower end of the stem body so that it cannot be pulled out, and a plurality of split grooves 46 having an upper surface opening are formed on the peripheral surface of the connecting tube 44 at intervals in the circumferential direction. The dividing groove is for allowing the in-cylinder liquid to flow into the in-stem flow path 35 when the cylindrical piston 20 is lowered.

５０はバネ支承筒で、シリンダ本体内面へ嵌合させた筒部５１下端に内向きフランジ５２を付設して、該内向きフランジ５２内周から上側シール筒５３を垂下して、該上側シール筒５３をステム本体外面へ摺動自在に嵌合させる。さらに筒部５１の下部を上向き段部５４を介して小内径部に形成して、上向き段部５４をシリンダ本体の上向き段部７へ係合させる。   Reference numeral 50 denotes a spring support cylinder. An inward flange 52 is attached to the lower end of the cylinder portion 51 fitted to the inner surface of the cylinder body, and the upper seal cylinder 53 is suspended from the inner periphery of the inward flange 52 so that the upper seal cylinder is provided. 53 is slidably fitted to the outer surface of the stem body. Further, the lower portion of the cylindrical portion 51 is formed as a small inner diameter portion via the upward step portion 54, and the upward step portion 54 is engaged with the upward step portion 7 of the cylinder body.

筒部５１上端に外向きフランジ５５を付設して、該外向きフランジ５５をシリンダ本体１上端へ係合させると共に、第２空気導入孔５６を設けてこれを第１空気導入孔１０へ連通させる。 An outward flange 55 is attached to the upper end of the cylindrical portion 51, the outward flange 55 is engaged with the upper end of the cylinder body 1, and a second air introduction hole 56 is provided to communicate with the first air introduction hole 10. .

６０はバネ材で、ステム本体外周へ嵌合させたコイルスプリングから形成されていて、下端を内向きフランジ５２内周へ当接させると共に、コイルスプリング上部を外筒３２内へ嵌合させて、コイルスプリング上端を下向き段部３１へ当接させている。   60 is a spring material, which is formed from a coil spring fitted to the outer periphery of the stem body, and has its lower end abutted to the inner circumference of the inward flange 52, and the upper part of the coil spring is fitted into the outer cylinder 32, The upper end of the coil spring is brought into contact with the downward step portion 31.

すなわち、第１バネ受けをシリンダ本体内面に設けた内向きフランジ５２で構成すると共に、第２バネ受けをステム本体外面に設けた下向き段部３１で構成し、さらに内向きフランジ５２と下向き段部３1とシリンダ本体内面とで画成される空間によってステム付勢用のバネ材収納室７０を構成する。   That is, the first spring receiver is configured by the inward flange 52 provided on the inner surface of the cylinder body, the second spring receiver is configured by the downward step portion 31 provided on the outer surface of the stem body, and the inward flange 52 and the downward step portion. A spring material storage chamber 70 for urging the stem is constituted by a space defined by 3 1 and the inner surface of the cylinder body.

８０は水密筒体で、バネ支承筒５０の筒部５１上部内面へ水密に嵌合させた短筒８１内周から密封筒８２を起立して、該密封筒内へステムを上下動自在に、かつ係合段部３３を介して抜出し不能に水密嵌合させる。   80 is a watertight cylindrical body, and a sealing cylinder 82 is erected from the inner periphery of a short cylinder 81 that is watertightly fitted to the upper inner surface of the cylindrical portion 51 of the spring bearing cylinder 50, and the stem can be moved up and down in the sealing cylinder. And it is watertightly fitted through the engaging step 33 so that it cannot be pulled out.

９０は装着筒で、容器体口頸部８外面へ螺合させた周壁上端に付設した外向きフランジ９１でシリンダ本体１の外向きフランジ９を容器体口頸部８へ圧接させている。 Reference numeral 90 denotes a mounting cylinder, and an outward flange 91 attached to the upper end of the peripheral wall screwed to the outer surface of the container body neck portion 8 presses the outward flange 9 of the cylinder body 1 to the container body neck portion 8.

１００は固定キャップで、シリンダ本体１の上端部へ螺合させた内外二重周壁１０１上面を閉塞する頂壁１０２の中央部に開口部１０３を設けて、該開口部からステムを突出させると共に、開口部１０３内周を水密筒８２へ摺動自在に嵌合させている。 Reference numeral 100 denotes a fixed cap, which is provided with an opening 103 at the center of the top wall 102 that closes the upper surface of the inner and outer double peripheral walls 101 screwed to the upper end of the cylinder body 1, and the stem protrudes from the opening. The inner periphery of the opening 103 is slidably fitted to the watertight cylinder 82.

また頂壁１０２内周部から嵌合筒１０５を垂下して、該嵌合筒をシリンダ本体１の上端部内面へ嵌合させてその下端を短筒８１上端へ当接させている。さらに周壁１０１の外周面にノズルヘッド螺合用の雄ネジ１０４を形成している。 Further, the fitting cylinder 105 is suspended from the inner peripheral portion of the top wall 102, the fitting cylinder is fitted to the inner surface of the upper end portion of the cylinder body 1, and the lower end thereof is brought into contact with the upper end of the short cylinder 81. Further, a male screw 104 for screwing the nozzle head is formed on the outer peripheral surface of the peripheral wall 101.

２００はノズルヘッドで、ノズル２０１を突設する周壁上面を頂板２０２で閉塞して、該頂板から垂下する垂下筒２０３をステム上端へ嵌合させると共に、周壁内周面に固定キャップ１００の雄ネジ１０４へ螺合可能な雌ネジ１０５を形成する。 Reference numeral 200 denotes a nozzle head, the upper surface of the peripheral wall projecting from the nozzle 201 is closed with a top plate 202, and a drooping cylinder 203 hanging from the top plate is fitted to the upper end of the stem. A female screw 105 that can be screwed onto 104 is formed.

次に作用について説明する。ノズルヘッド２００を押下げると、ステム下端に固定された筒状ピストン２０と共に閉塞部材４０が下降してシリンダ本体内が加圧されるため、シリンダ本体内液体が連通路４６を介してステム内流路３５へ流入してノズルから吐出される。 Next, the operation will be described. When the nozzle head 200 is pushed down, the closing member 40 is lowered together with the cylindrical piston 20 fixed to the lower end of the stem, and the inside of the cylinder body is pressurized, so that the liquid in the cylinder body flows into the stem through the communication path 46. It flows into the channel 35 and is discharged from the nozzle.

ノズルヘッド２００に対する押下げを解除すると、バネ材６０の付勢力でステムが上昇し、これと共に筒状ピストン２０と閉塞部材４０が上昇してシリンダ本体内の圧力が減少するため、容器体内の液体が吸込み弁を介してシリンダ本体内へ吸引される。なお、筒状ピストン２０は内向きフランジ５２下面へ当接することで上限位置が決定される。 When the push-down on the nozzle head 200 is released, the stem is raised by the urging force of the spring material 60, and the cylindrical piston 20 and the closing member 40 are raised at the same time, and the pressure in the cylinder body is reduced. Is sucked into the cylinder body through the suction valve. The upper limit position of the cylindrical piston 20 is determined by contacting the lower surface of the inward flange 52.

筒状ピストン２０の下面は閉塞部材４０の底壁４３によって閉塞されているため、すなわち吐出時にはシリンダ本体内の液体はフラットな筒状ピストン下面によって加圧されると共に、シリンダ本体底部には筒状ピストンの下降の障害となる要素は存在せず、したがって、シリンダ本体内の液体の殆どが吐出されることになり、残量減少が図れる。なお、不使用時はノズルヘッドを下降させて固定キャップ１００の雄ネジ１０４へ螺合させる。 Since the lower surface of the cylindrical piston 20 is closed by the bottom wall 43 of the closing member 40, that is, during discharge, the liquid in the cylinder body is pressurized by the flat cylindrical piston lower surface, and the cylinder body bottom is cylindrical. There is no element that obstructs the lowering of the piston. Therefore, most of the liquid in the cylinder body is discharged, and the remaining amount can be reduced. When not in use, the nozzle head is lowered and screwed into the male screw 104 of the fixing cap 100.

図３は他の実施形態を示すもので、同図において、３００は固定筒体で、短筒８１より上方のシリンダ本体部分内面へ筒部３０１を嵌合させて、該筒部下端を短筒８１上端へ当接させると共に、上端の外向きフランジ３０２をシリンダ本体上端へ係合させている。 FIG. 3 shows another embodiment. In FIG. 3, reference numeral 300 denotes a fixed cylinder, and a cylinder portion 301 is fitted to the inner surface of the cylinder main body above the short cylinder 81, and the lower end of the cylinder portion is connected to the short cylinder. The upper end 81 is brought into contact with the upper end, and the outward flange 302 at the upper end is engaged with the upper end of the cylinder body.

なお、本実施形態では、バネ支承筒５０の上部は切除により省略して短筒８１は直接シリンダ本体１の周壁２内面へ嵌合させる。その他の構成は第１の実施形態と同一であるから説明を省略する。 In the present embodiment, the upper portion of the spring support cylinder 50 is omitted by excision, and the short cylinder 81 is directly fitted to the inner surface of the peripheral wall 2 of the cylinder body 1. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

組立に際しては、上記のようにしてモジュール化されたシリンダ本体を口頸部８を介して容器体内へ挿入した後、装着筒９０で固定し、さらにシリンダ本体上端部へ固定キャップ１００を螺合させ、次いで固定キャップから上方へ突出するステム上端へノズルヘッド２００を嵌合させればよい。 When assembling, the cylinder body modularized as described above is inserted into the container body through the mouth / neck portion 8, and then fixed with the mounting cylinder 90, and the fixing cap 100 is screwed into the upper end portion of the cylinder body. Then, the nozzle head 200 may be fitted to the upper end of the stem protruding upward from the fixed cap.

本発明は、液体吐出ポンプによって容器体内液体を吐出させる容器の分野に利用することができる。   The present invention can be used in the field of containers in which liquid in a container is discharged by a liquid discharge pump.

１ シリンダ本体
２ 周壁
３ 吸込み弁
２０ 筒状ピストン
３０ ステム
４０ 閉塞部材
４１ 嵌合溝
４３ 底壁
４４ 連結筒
４５ 嵌合筒
４６ 連通路
５０ バネ支承筒
５１ 筒部
５２ 内向きフランジ
５３ 上側シール筒
６０ バネ材
７０ バネ材収納室
８０ 水密筒体
８１ 短筒
８２ 密封筒
９０ 装着筒
２００ ノズルヘッド
３００ 固定筒体
３０１ 筒部 DESCRIPTION OF SYMBOLS 1 Cylinder main body 2 Perimeter wall 3 Suction valve 20 Cylindrical piston 30 Stem 40 Closure member 41 Fitting groove 43 Bottom wall 44 Connecting cylinder 45 Fitting cylinder 46 Communication path 50 Spring bearing cylinder 51 Cylinder part 52 Inward flange 53 Upper seal cylinder 60 Spring material 70 Spring material storage chamber 80 Watertight cylinder 81 Short cylinder 82 Sealed cylinder 90 Mounting cylinder 200 Nozzle head 300 Fixed cylinder 301 Tube portion

Claims (5)

シリンダ本体（１）内へ上下動自在に嵌合させた筒状ピストン（２０）内周から上方付勢されて起立するステム（３０）上端へノズルヘッド（２００）を装着し、該ノズルヘッドの押下げでステム内流路（３５）を介してノズル（２０１）から液吐出可能に設けた液体吐出ポンプにおいて、
前記筒状ピストン（２０）下面を閉塞する閉塞部材（４０）を設けて、該閉塞部材を前記ステム（３０）下部へ連結させ、
前記筒状ピストン（２０）より上方のシリンダ本体部分内面に第１バネ受け（５２）を設けると共に、該第１バネ受けより上方の前記ステム部分外面に第２バネ受け（３１）を設けて、該第１バネ受けおよび第２バネ受け間にステム付勢用のバネ材（６０）を設け、
前記ノズルヘッドの押下げで、前記筒状ピストンが下降してシリンダ本体（１）内液体が前記閉塞部材（４０）に設けた連通路（４６）を介して前記ステム内流路（３５）へ流入可能に設け、
前記シリンダ本体上部内面へ水密に嵌合させた短筒（８１）内周から密封筒（８２）を起立して水密筒体（８０）を形成し、密封筒（８２）内へ前記ステムを上下動自在に、かつ抜出し不能に水密嵌合させたことを特徴とする液体吐出ポンプ。 A nozzle head (200) is mounted on the upper end of a stem (30) that is urged upward from the inner periphery of a cylindrical piston (20) fitted into the cylinder body (1) so as to be movable up and down. In the liquid discharge pump provided so as to be able to discharge liquid from the nozzle (201) through the flow passage in the stem ( 35 ) by being pushed down,
Providing a closing member ( 40 ) for closing the lower surface of the cylindrical piston ( 20 ) , and connecting the closing member to the lower portion of the stem ( 30 ) ;
Together with the tubular piston (20) from receiving the first spring above the cylinder body portion inner surface provided (52), provided with a receiving second spring to said stem portion outer surface of the above the said first spring bearing (31), A spring material for stem biasing ( 60 ) is provided between the first spring receiver and the second spring receiver;
In pressing the nozzle head, the tubular piston descends the stem internal channel via a communication passage (46) provided in the cylinder body (1) in a liquid said closure member (40) to (35) Provided to allow inflow,
A sealed cylinder (82) is erected from the inner periphery of the short cylinder (81) fitted in a watertight manner to the upper inner surface of the cylinder body to form a watertight cylinder (80), and the stem is vertically moved into the sealed cylinder (82). A liquid discharge pump characterized in that it is watertightly fitted so as to be movable and unremovable. 前記第１バネ受けを前記シリンダ本体内面に設けた内向きフランジ（５２）で構成すると共に、前記第２バネ受けを前記ステム外面に設けた下向き段部（３１）で構成し、該内向きフランジと下向き段部とシリンダ本体内面とによって画成される空間をステム付勢用のバネ材収納室（７０）に形成したことを特徴とする請求項１記載の液体吐出ポンプ。 The first spring receiver is configured by an inward flange ( 52 ) provided on the inner surface of the cylinder body, and the second spring receiver is configured by a downward stepped portion ( 31 ) provided on the outer surface of the stem. 2. The liquid discharge pump according to claim 1, wherein a space defined by the downward stepped portion and the inner surface of the cylinder body is formed in a spring material storage chamber ( 70 ) for stem biasing. 前記閉塞部材（４０）は、前記筒状ピストンの本体下端面に設けた下面開口の嵌合溝（４１）へ嵌合させた嵌合筒（４５）の底壁上面中央部から連結筒（４４）を起立して、該連結筒を前記ステム下部内へ嵌合させると共に、該連結筒（４４）周面に前記連通路（４６）を形成したことを特徴とする請求項１又は２記載の液体吐出ポンプ。 The closing member ( 40 ) is connected to the connecting cylinder ( 44 ) from the center of the upper surface of the bottom wall of the fitting cylinder ( 45 ) fitted in the fitting groove ( 41 ) in the lower surface opening provided in the lower end surface of the cylindrical piston. 3) , the connecting tube is fitted into the lower portion of the stem, and the communication passage ( 46 ) is formed on the peripheral surface of the connecting tube ( 44 ) . Liquid discharge pump. 前記筒状ピストンの本体内周面と前記第１バネ受けを構成する内向きフランジ（５２）内周とのそれぞれに下側シール筒（２２）と上側シール筒（５３）とを設けて、下側シール筒（２２）を前記ステム外面へ摺動可能に嵌着させると共に、上側シール筒（５３）をステム（３０）外面へ摺動自在に嵌合させることで前記バネ材収納室（７０）への液侵入防止可能に設けたことを特徴とする請求項２又は３記載の液体吐出ポンプ。 A lower seal cylinder ( 22 ) and an upper seal cylinder ( 53 ) are provided on the inner peripheral surface of the main body of the cylindrical piston and the inner periphery of the inward flange ( 52 ) constituting the first spring support, respectively. The side seal cylinder (22) is slidably fitted to the outer surface of the stem, and the upper seal cylinder (53) is slidably fitted to the outer surface of the stem (30), thereby the spring material storage chamber ( 70 ). 4. The liquid discharge pump according to claim 2, wherein the liquid discharge pump is provided so as to prevent liquid from entering the liquid. 前記短筒（８１）より上方のシリンダ本体部分内面へ前記短筒抜止め用の固定筒体（３００）を嵌合させて、該固定筒体下端を前記短筒（８１）上端へ当接させたことを特徴とする請求項１ないし４のいずれか１つに記載の液体吐出ポンプ。The fixed cylinder (300) for retaining the short cylinder is fitted to the inner surface of the cylinder main body above the short cylinder (81), and the lower end of the fixed cylinder is brought into contact with the upper end of the short cylinder (81). The liquid discharge pump according to any one of claims 1 to 4, wherein the liquid discharge pump is provided.
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