JP7032992B2 - Foam discharge container - Google Patents

Foam discharge container Download PDF

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JP7032992B2
JP7032992B2 JP2018087928A JP2018087928A JP7032992B2 JP 7032992 B2 JP7032992 B2 JP 7032992B2 JP 2018087928 A JP2018087928 A JP 2018087928A JP 2018087928 A JP2018087928 A JP 2018087928A JP 7032992 B2 JP7032992 B2 JP 7032992B2
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cylinder
air
stem
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cylinder portion
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JP2019194095A (en
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義幸 角田
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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
    • B05B11/1087—Combination of liquid and air pumps
    • 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

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Description

本発明は、泡吐出容器に関する。 The present invention relates to a foam discharge container.

この種の泡吐出器として、容器体の口頸部へ装着可能な装着部材から、大径の空気用シリンダ及び小径の液体用シリンダを有するシリンダ部材を垂設し、前記空気用シリンダ内に挿入される空気用ピストン及び前記液体用シリンダ内に挿入される液体用ピストンを下半部に有するとともに、ノズルヘッドを上半部に有し、かつ上方へ付勢された作動部材を設け、シリンダ部材に対する作動部材の昇降により、液体用シリンダ内からノズルヘッド側へ主流路を介して圧送される液体に空気用シリンダ内から連通路を介して圧送される空気を合流させて起泡し、その泡を前記ノズルヘッドから吐出した後に、空気用シリンダ内へ外気を導入するとともに、液体用シリンダへ容器体内液体を吸い上げるように構成したものが知られている（特許文献１）。
前記作動部材は、シリンダ部材内から、装着部材が有する内向きフランジのフランジ孔を介して起立するステムの上部に前記ノズルヘッドを形成しており、内向きフランジとステムとの間に外気をエアチャンバー内へ導入するための通路が形成されている。そして空気導入時に容器に付着した水や汚れなどの異物が通路内へ吸い込まれないようにするために、前記内向きフランジの内周部からステムの外周面を覆う起立周壁を上方へ突設させていた。 As this type of foam ejector, a cylinder member having a large-diameter air cylinder and a small-diameter liquid cylinder is vertically installed from a mounting member that can be attached to the mouth and neck of the container body and inserted into the air cylinder. The cylinder member is provided with an air piston to be operated and a liquid piston inserted into the liquid cylinder in the lower half, a nozzle head in the upper half, and an upwardly urged operating member. By raising and lowering the operating member with respect to the liquid, the air pumped from the inside of the air cylinder via the communication passage is merged with the liquid pumped from the liquid cylinder to the nozzle head side via the main flow path to generate foam, and the foam is generated. Is known to be configured to introduce the outside air into the air cylinder and suck the liquid in the container into the liquid cylinder after discharging the liquid from the nozzle head (Patent Document 1).
The operating member forms the nozzle head on the upper part of the stem that stands up from inside the cylinder member through the flange hole of the inward flange of the mounting member, and air the outside air between the inward flange and the stem. A passage is formed for introduction into the chamber. Then, in order to prevent foreign substances such as water and dirt adhering to the container from being sucked into the passage when the air is introduced, an upright peripheral wall covering the outer peripheral surface of the stem is projected upward from the inner peripheral portion of the inward flange. Was there.

特開２０１５－２２７１８３JP 2015-227183

特許文献１の泡吐出器では、内向きフランジの内周からステムの外周面を覆う起立周壁を上方突出しているから、この起立周壁の上端とノズルヘッドの下端との間に作動部材のストロークに対応する距離（押下げ代）をとる必要があった。このために、泡吐出器の背が高くなり、省スペース化の要請に反する。
特に前記起立周壁が作動部材の昇降の案内する機能を兼ねており、昇降の全行程を案内するために、起立周壁の高さが作動部材のストリークと同程度に設計されていれば、内向きフランジからノズルヘッドの下面までの高さは、作動部材のストロークの２倍程度になることとなり、泡吐出器の全長が大きくなり易かった。 In the foam ejector of Patent Document 1, since the upright peripheral wall covering the outer peripheral surface of the stem protrudes upward from the inner circumference of the inward flange, the stroke of the operating member is formed between the upper end of the upright peripheral wall and the lower end of the nozzle head. It was necessary to take the corresponding distance (pushing allowance). For this reason, the foam ejector becomes taller, which is contrary to the demand for space saving.
In particular, if the standing peripheral wall also has a function of guiding the ascending / descending of the operating member and the height of the standing peripheral wall is designed to be the same as that of the streak of the operating member in order to guide the entire elevating process, it faces inward. The height from the flange to the lower surface of the nozzle head was about twice the stroke of the operating member, and the total length of the foam ejector tended to be large.

本発明の第１の目的は、容器体口頸部への装着部材とノズルヘッドとの間に作動部材のストローク分の距離を取る必要をなくして泡吐出器の高さを抑制できるようにすることである。
本発明の第２の目的は、作動部材と装着部材との間の隙間からの水などの異物の進入を適切に抑制できる泡吐出器を提供することである。 A first object of the present invention is to make it possible to suppress the height of the foam ejector by eliminating the need to keep a distance corresponding to the stroke of the operating member between the member mounted on the mouth and neck of the container body and the nozzle head. That is.
A second object of the present invention is to provide a foam ejector capable of appropriately suppressing the entry of foreign matter such as water from a gap between an operating member and a mounting member.

第１の手段は、容器体の口頸部へ装着可能な装着筒部４の上部から内向きフランジ６を内方突出してなる装着部材２と、
この装着部材２に取り付けられた大径の空気用シリンダ１２から小径の液体用シリンダ１４を垂下したシリンダ部材１０と、
前記液体用シリンダ１４内を昇降可能な液体用ピストン２２からステムＳを上方突出するとともに、このステムＳの外側に、前記空気用シリンダ１２と摺接する空気用ピストン３０を相対的な上下動が可能に連係させ、かつ前記ステムＳの上方に吐出口５４を有するノズルヘッドＮが形成され、かつ上方へ付勢された作動部材２０と、
を具備し、前記作動部材２０の昇降により、前記液体用シリンダ１４内から第２液体用逆止弁ＶＬ２を介して圧送された液体と前記空気用シリンダ１２内から第２空気用逆止弁ＶＡ２を介して圧送された空気とを混合させ、発泡させて前記吐出口５４から吐出するとともに、第１液体用逆止弁ＶＬ１を介して容器体側から前記液体用シリンダ１４内へ液体を吸い込み、かつ、第１空気用逆止弁ＶＡ１を介して前記空気用シリンダ１２内へ外気を導入することが可能に設けた泡吐出器において、
前記空気用ピストン３０の上面から、前記内向きフランジ６のフランジ孔６ａの縁部と前記ステムＳの外周面の間を通って当該ステムＳの外周面を覆うカバー筒部３８を起立しており、
前記空気用ピストン３０の内周端には、前記ステムＳの外側に昇降可能に嵌合されたスライド筒部３２が付設されており、かつ、このスライド筒部３２の周囲に前記カバー筒部３８が周設されている。 The first means is a mounting member 2 having an inward flange 6 protruding inward from the upper portion of the mounting cylinder portion 4 that can be mounted on the mouth and neck of the container body.
A cylinder member 10 in which a small-diameter liquid cylinder 14 is hung from a large-diameter air cylinder 12 attached to the mounting member 2.
The stem S protrudes upward from the liquid piston 22 that can move up and down in the liquid cylinder 14, and the air piston 30 that is in sliding contact with the air cylinder 12 can be moved up and down relative to the outside of the stem S. A nozzle head N having a discharge port 54 above the stem S is formed, and the operating member 20 is urged upward.
The liquid pumped from the inside of the liquid cylinder 14 via the second check valve VL2 and the second air check valve VA2 from the inside of the air cylinder 12 by raising and lowering the operating member 20. It is mixed with the air pressure-fed through the liquid, foamed and discharged from the discharge port 54, and the liquid is sucked into the liquid cylinder 14 from the container body side via the first liquid check valve VL1. In addition , in a foam discharger provided so that outside air can be introduced into the air cylinder 12 via the first air check valve VA1.
A cover cylinder 38 that covers the outer peripheral surface of the stem S is erected from the upper surface of the air piston 30 through between the edge of the flange hole 6a of the inward flange 6 and the outer peripheral surface of the stem S. ,
A slide cylinder portion 32 fitted to the outside of the stem S so as to be able to move up and down is attached to the inner peripheral end of the air piston 30, and the cover cylinder portion 38 is provided around the slide cylinder portion 32. Is installed around .

本手段は、図１に示すように、空気用シリンダ１２の内周面に嵌合された空気用ピストン３０から、作動部材２０のステムＳの外周面を覆うカバー筒部３８を起立している。こ
のカバー筒部３８は、作動部材２０のステムＳと装着部材２の内向きフランジ６のフランジ孔６ａの縁との間を通って起立されており、少なくとも空気用シリンダ１２の内周面に嵌着されている。従来技術では、特許文献１の如く、前記内向きフランジの内周から前記ステムを案内する起立周壁を上方突出しているが、この場合には、ノズルヘッドを押し下げて起立周壁の上端部と突き当たるとそれ以上に押し下げることができないから、前述の如く、ノズルヘッドの下端と起立周壁の上端との間に作動部材のストロークに対応する押下げ代を取る必要があるという設計上の制約があり、泡吐出器が背高となる。本発明のカバー筒部３８は、空気用ピストン３０の一部として、作動部材２０のステムＳに追従して下降するから、前述の設計上の制約がなくなり、吐出容器の高さを抑制することができる。
なお、前記空気用ピストン３０の内周端には、前記ステムＳの外側に昇降可能に嵌合されたスライド筒部３２が付設されている。そして、このスライド筒部３２の周囲に前記カバー筒部３８が周設されている。 As shown in FIG. 1, the present means erects a cover cylinder portion 38 that covers the outer peripheral surface of the stem S of the operating member 20 from the air piston 30 fitted to the inner peripheral surface of the air cylinder 12. .. The cover cylinder portion 38 is erected through between the stem S of the operating member 20 and the edge of the flange hole 6a of the inward flange 6 of the mounting member 2, and is fitted at least on the inner peripheral surface of the air cylinder 12. It is worn. In the prior art, as in Patent Document 1, the upright peripheral wall that guides the stem protrudes upward from the inner circumference of the inward flange, but in this case, if the nozzle head is pushed down and abuts against the upper end of the upright peripheral wall. Since it cannot be pushed down any further, as mentioned above, there is a design restriction that it is necessary to take a pushing down allowance corresponding to the stroke of the operating member between the lower end of the nozzle head and the upper end of the upright peripheral wall. The discharger becomes tall. Since the cover cylinder portion 38 of the present invention descends following the stem S of the operating member 20 as a part of the air piston 30, the above-mentioned design restriction is eliminated and the height of the discharge container is suppressed. Can be done.
A slide cylinder portion 32 fitted to the outside of the stem S so as to be able to move up and down is attached to the inner peripheral end of the air piston 30. The cover cylinder portion 38 is provided around the slide cylinder portion 32.

「ステム」は、本明細書において、液体用シリンダから起立してノズルヘッドに至る部材をいうものとし、図示例ではステム周壁ＳＰと筒状部材４８とからなるが、筒状部材は省略しても構わない。ステム周壁は、別体である複数の周壁から形成されていてもよく、これを第１ステム周壁２６、第２ステム周壁２８などと称するものとする。本明細書では、ノズルヘッドから一体に垂下された連結筒部をステムＳの一部として第３ステム周壁５５としている。空気用ピストンから起立するカバー筒部３８で作動部材２０のステムの外周面を覆うという機能からは、覆われる部位がノズルヘッドと一体であろうと、別体であろうと、技術的な意味合いとして違いがないからである。
「カバー筒部」は、作動部材のステムの周囲を覆っていればどのような構造でもよい。
例えばカバー筒部を、ステムの外周面と接触しない単なるカバー筒部としてもよいし、カバー筒部を、ステムの外周面を摺動可能とすることで、ステムの昇降を案内するガイド筒部としても構わない。後者の場合には、図示例のように、ガイド筒部の内面に外気導入路Ｐ３形成用の溝を縦設して、外気を吸い込む機能を残してもよい。 In the present specification, the “stem” refers to a member that stands up from the liquid cylinder to reach the nozzle head, and is composed of a stem peripheral wall SP and a tubular member 48 in the illustrated example, but the tubular member is omitted. It doesn't matter. The stem peripheral wall may be formed from a plurality of separate peripheral walls, and these are referred to as a first stem peripheral wall 26, a second stem peripheral wall 28, and the like. In the present specification, the connecting cylinder portion integrally hung from the nozzle head is used as a third stem peripheral wall 55 as a part of the stem S. From the function of covering the outer peripheral surface of the stem of the operating member 20 with the cover cylinder 38 that stands up from the air piston, the technical meaning is different regardless of whether the covered part is integrated with the nozzle head or is separate. Because there is no.
The "cover cylinder portion" may have any structure as long as it covers the periphery of the stem of the operating member.
For example, the cover cylinder may be a simple cover cylinder that does not come into contact with the outer peripheral surface of the stem, or the cover cylinder may be a guide cylinder that guides the elevating and lowering of the stem by making the outer peripheral surface of the stem slidable. It doesn't matter. In the latter case, as shown in the illustrated example, a groove for forming the outside air introduction path P3 may be vertically provided on the inner surface of the guide cylinder portion to retain the function of sucking the outside air.

第２の手段は、第１の手段を有し、かつ前記ノズルヘッドＮは前記ステムＳより大外径に形成され、このノズルヘッドＮの裏側まで前記カバー筒部３８を起立した。 The second means has the first means, and the nozzle head N is formed to have a larger outer diameter than the stem S, and the cover cylinder portion 38 stands up to the back side of the nozzle head N.

本手段では、図１に示すように、前記ステムＳより大外径に形成されたノズルヘッドＮの裏側まで前記カバー筒部３８を起立することを提案している。これにより、カバー筒部３８の上方から水などの異物が混入しにくくすることができる。 In this means, as shown in FIG. 1, it is proposed that the cover cylinder portion 38 stands up to the back side of the nozzle head N formed to have a larger outer diameter than the stem S. This makes it difficult for foreign matter such as water to enter from above the cover cylinder 38.

第３の手段は、第１の手段又は第２の手段を有し、かつ前記ステムＳの外面を前記カバー筒部３８の内面に当接又は近接させるともに、このカバー筒部３８を前記フランジ孔６ａの孔縁に対して摺動することが可能に形成した。 The third means has a first means or a second means, and the outer surface of the stem S is brought into contact with or close to the inner surface of the cover cylinder portion 38, and the cover cylinder portion 38 is provided with the flange hole. It was formed so as to be slidable with respect to the hole edge of 6a.

本手段では、前記ステムＳの外面を前記カバー筒部３８の内面に当接又は近接させるともに、このカバー筒部３８を前記フランジ孔６ａの孔縁に対して摺動することが可能に形成することを提案している。これにより、前記ステムＳがカバー筒部３８を介して装着部材２の内向きフランジ６によって横方向に支持され、安定的な昇降が可能となる。 In this means, the outer surface of the stem S is brought into contact with or close to the inner surface of the cover cylinder 38, and the cover cylinder 38 is formed so as to be slidable with respect to the edge of the flange hole 6a. I am proposing that. As a result, the stem S is laterally supported by the inward flange 6 of the mounting member 2 via the cover cylinder portion 38, and stable ascent and descent is possible.

第４の手段は、第１の手段から第３の手段のいずれかを有し、かつ前記空気用ピストン３０は、前記スライド筒部３２から隔壁部３４を外方突出するとともに、この隔壁部３４の先端に前記空気用シリンダ１２の内面に摺接させた摺動壁部４２を付設してなり、
前記カバー筒部３８は、前記隔壁部３４の内周部から起立するとともに、少なくとも前記カバー筒部３８の内側の隔壁部分に吸気孔３６を開口しており、
かつ前記カバー筒部３８の長さを、前記作動部材２０の下限位置に置いて前記内向きフランジ６のフランジ孔６ａから前記カバー筒部３８の先端部が脱落しない長さとした。 The fourth means has any one of the first to third means, and the air piston 30 projects the partition wall portion 34 outward from the slide cylinder portion 32 and the partition wall portion 34. A sliding wall portion 42 that is slidably contacted with the inner surface of the air cylinder 12 is attached to the tip of the air cylinder 12.
The cover cylinder portion 38 stands up from the inner peripheral portion of the partition wall portion 34, and at least has an intake hole 36 opened in the partition wall portion inside the cover cylinder portion 38.
Moreover, the length of the cover cylinder portion 38 is set to a length at which the tip portion of the cover cylinder portion 38 does not fall off from the flange hole 6a of the inward flange 6 by placing it at the lower limit position of the actuating member 20.

本手段では、空気用ピストン３０の構成におけるカバー筒部３８の設置箇所を具体化するとともに、前記カバー筒部３８は、前記隔壁部３４の内周部から起立させ、少なくともカバー筒部３８の内側の隔壁部分に吸気孔３６を開口することを構成要件としている。これにより外気導入機能を適切に担保することができる。
また前記カバー筒部３８の長さを、作動部材２０の下限位置において前記内向きフランジ６のフランジ孔６ａからカバー筒部３８の先端部が脱落しない長さとしている。これにより、作動部材２０の下限位置でフランジ孔６ａからカバー筒部３８が外れて作動部材２０の動きに支障が生ずることを防止できる。 In this means, the installation location of the cover cylinder portion 38 in the configuration of the air piston 30 is embodied, and the cover cylinder portion 38 is erected from the inner peripheral portion of the partition wall portion 34, and is at least inside the cover cylinder portion 38. It is a constituent requirement to open the intake hole 36 in the partition wall portion of the above. As a result, the outside air introduction function can be appropriately secured.
Further, the length of the cover cylinder portion 38 is set so that the tip portion of the cover cylinder portion 38 does not fall off from the flange hole 6a of the inward flange 6 at the lower limit position of the operating member 20. As a result, it is possible to prevent the cover cylinder portion 38 from coming off from the flange hole 6a at the lower limit position of the operating member 20 and hindering the movement of the operating member 20.

第１の手段に係る発明によれば、容器体１００の口頸部に装着された装着部材２から、空気用シリンダ１２及び液体用シリンダ１４を有するシリンダ部材１０を垂下するとともに、前記空気用シリンダ１２内に昇降を可能に設けた空気用ピストン３０の上面から、装着部材２の内向きフランジ６のフランジ孔６ａの孔縁と作動部材２０のステムＳとの間を通って、当該ステムＳの外周面を覆うカバー筒部３８を前記空気用ピストン３０の上面から起立したから、内向きフランジ６からカバー筒部を起立する場合と比較して、泡吐出器の高さを低く抑えることができる。
第２の手段に係る発明によれば、ノズルヘッドＮの裏側まで前記カバー筒部３８を起立したから、カバー筒部３８の先端から水などが入りにくい。
第３の手段に係る発明によれば、前記カバー筒部３８を、前記ステムＳの外面が当該カバー筒部３８の内面を摺動可能とするとともに、カバー筒部３８の外面が前記内向きフランジ６のフランジ孔６ａの孔縁を摺動可能に形成したから、前記ステムＳを安定的に昇降させることができる。
第４の手段に係る発明によれば、前記カバー筒部３８の長さを、作動部材２０の下限位置に置いて前記内向きフランジ６のフランジ孔６ａからカバー筒部３８の先端部が脱落しない長さとしたから、当該脱落により、空気用ピストン３０の動きに支障が生ずることがない。 According to the invention according to the first means, the cylinder member 10 having the air cylinder 12 and the liquid cylinder 14 is hung from the mounting member 2 mounted on the mouth neck of the container body 100, and the air cylinder is described. From the upper surface of the air piston 30 provided so as to be able to move up and down in 12, the stem S passes between the hole edge of the flange hole 6a of the inward flange 6 of the mounting member 2 and the stem S of the operating member 20. Since the cover cylinder 38 covering the outer peripheral surface is erected from the upper surface of the air piston 30, the height of the foam ejector can be kept low as compared with the case where the cover cylinder is erected from the inward flange 6. ..
According to the invention according to the second means, since the cover cylinder portion 38 is erected up to the back side of the nozzle head N, it is difficult for water or the like to enter from the tip of the cover cylinder portion 38.
According to the invention according to the third means, the outer surface of the stem S makes the inner surface of the cover cylinder 38 slidable, and the outer surface of the cover cylinder 38 is the inward flange. Since the hole edge of the flange hole 6a of No. 6 is slidably formed, the stem S can be stably moved up and down.
According to the invention according to the fourth means, the length of the cover cylinder portion 38 is placed at the lower limit position of the operating member 20, and the tip portion of the cover cylinder portion 38 does not fall off from the flange hole 6a of the inward flange 6. Since the length is set, the dropout does not hinder the movement of the air piston 30.

本発明の第１実施形態に係る泡吐出器の縦断面図である。It is a vertical sectional view of the foam discharger which concerns on 1st Embodiment of this invention. 図１の泡吐出器の要部の拡大図である。It is an enlarged view of the main part of the foam discharger of FIG. 図１の泡吐出器の平面図である。It is a top view of the foam discharger of FIG. 図１の泡吐出器の作用状態の説明図である。It is explanatory drawing of the operation state of the foam ejector of FIG. 本発明の第２実施形態に係る泡吐出器の縦断面図である。It is a vertical sectional view of the foam discharger which concerns on 2nd Embodiment of this invention. 図５の泡吐出器の要部の拡大図である。It is an enlarged view of the main part of the foam discharger of FIG. 図５の泡吐出器の作用状態の説明図である。It is explanatory drawing of the operation state of the foam ejector of FIG.

図１から図４は、本発明の第１実施形態に係る泡吐出器を示している。説明の便宜上、主として本発明の基本的な構成について先に説明する。
この泡吐出器は、装着部材２と、シリンダ部材１０と、ポペット弁部材１８と、作動部材２０とで構成されている。これら各部材は、例えば合成樹脂や金属で形成することができる。 1 to 4 show a foam ejector according to the first embodiment of the present invention. For convenience of explanation, the basic configuration of the present invention will be described first.
This foam discharger is composed of a mounting member 2, a cylinder member 10, a poppet valve member 18, and an operating member 20. Each of these members can be formed of, for example, a synthetic resin or a metal.

装着部材２は、容器体１００の口頸部１０２へ嵌合（図示例では螺合）可能な装着筒部４の上端部から内向きフランジ６を内方突出し、この内向きフランジ６の下面外周部からはシール筒部７を垂下するとともに、内向きフランジ６のフランジ孔６ａの孔縁から起立周壁８を上方突出している。この起立周壁については後述する。 The mounting member 2 projects an inward flange 6 inward from the upper end portion of the mounting cylinder portion 4 that can be fitted (screwed in the illustrated example) to the mouth neck portion 102 of the container body 100, and the outer periphery of the lower surface of the inward flange 6 is formed. The seal cylinder portion 7 hangs down from the portion, and the upright peripheral wall 8 projects upward from the hole edge of the flange hole 6a of the inward flange 6. This upright peripheral wall will be described later.

シリンダ部材１０は、本実施形態において、大径の空気用シリンダ１２の下端部から小径の液体用シリンダ１４を、また液体用シリンダ１４の下端部から縮径部１４ａを介して取付筒部１６をそれぞれ垂下している。
前記空気用シリンダ１２の上端部には、肉厚の鍔部ｂが付設され、この鍔部ｂの幅方向中間部に周設された環状の溝内に、前記シール筒部７を嵌着させている。空気用シリンダ１２の上部外周面には、通気孔１３を開口している。この通気孔１３は、図１の状態では後述の空気用ピストン３０によって閉塞されており、また図４に示すように作動部材２０が下降したときに開放され、後述の外気導入路Ｐ３を介して容器体１００内部を外部に連通させる。
図示例では、縮径部１４ａは外周側から下内方へテーパ状に突出しており、縮径部１４ａの内面を第１液体用逆止弁座１５としている。また取付筒部１６内には吸い上げパイプ１７の上部を嵌合させている。もっともこれらの形状は適宜変更することができる。前記液体用シリンダ１４の内面からは、相互に一定の間隔を存して、複数の係止リブ１４ｂを半径方向内方へ突出している。係止リブ１４ｂと後述の液体用ピストン２２との間にはコイルスプリングＣを介装する。 In the present embodiment, the cylinder member 10 has a small-diameter liquid cylinder 14 from the lower end of the large-diameter air cylinder 12 and a mounting cylinder 16 from the lower end of the liquid cylinder 14 via the reduced-diameter portion 14a. Each is hanging.
A thick flange portion b is attached to the upper end portion of the air cylinder 12, and the seal cylinder portion 7 is fitted in an annular groove provided around the intermediate portion in the width direction of the flange portion b. ing. A ventilation hole 13 is opened on the upper outer peripheral surface of the air cylinder 12. The ventilation hole 13 is closed by the air piston 30 described later in the state of FIG. 1, and is opened when the operating member 20 descends as shown in FIG. 4, and is opened via the outside air introduction path P3 described later. The inside of the container 100 is communicated with the outside.
In the illustrated example, the reduced diameter portion 14a protrudes downward and inward from the outer peripheral side in a tapered shape, and the inner surface of the reduced diameter portion 14a is a check valve seat 15 for the first liquid. Further, the upper part of the suction pipe 17 is fitted in the mounting cylinder portion 16. However, these shapes can be changed as appropriate. A plurality of locking ribs 14b project inward in the radial direction from the inner surface of the liquid cylinder 14 at regular intervals. A coil spring C is interposed between the locking rib 14b and the liquid piston 22 described later.

ポペット弁部材１８は、液体用シリンダ１４の内部からステム下部内へ至る長さを有し、かつ下端部外面に、それぞれ液体用シリンダ１４の係止リブ１４ｂの間に位置させる、周方向複数の係合突起１８ａを突出している。ポペット弁部材１８は、図１の状態（係合突起１８ａがコイルスプリングＣの下面に当接している状態）から図４の状態（第１液体用逆止弁座１５にポペット弁部材１８の下面が当接している状態）の位置までの上下動が可能に装着しており、ポペット弁部材１８の下端部１８ｂと第１液体用逆止弁座１５とで第１液体用逆止弁ＶＬ１を形成している。図示のポペット弁部材１８は、下部を大径部にかつ上部を小径部に形成しており、小径部の上端にはテーパ筒状に拡開するテーパ状弁部１８ｃを形成する。 The poppet valve member 18 has a length extending from the inside of the liquid cylinder 14 to the inside of the lower part of the stem, and is located on the outer surface of the lower end portion between the locking ribs 14b of the liquid cylinder 14, respectively. The engaging protrusion 18a is projected. The poppet valve member 18 is changed from the state shown in FIG. 1 (the state in which the engaging protrusion 18a is in contact with the lower surface of the coil spring C) to the state shown in FIG. 4 (the lower surface of the poppet valve member 18 on the check valve seat 15 for the first liquid). It is mounted so that it can move up and down to the position where it is in contact with each other. Is forming. The poppet valve member 18 shown in the figure has a lower portion having a large diameter portion and an upper portion having a small diameter portion, and a tapered valve portion 18c that expands in a tapered cylindrical shape is formed at the upper end of the small diameter portion.

作動部材２０は、シリンダ部材１０に対して上方付勢状態で上下動可能に組み付けたもので、図１に示す如く、液体用ピストン２２と、第１ステム周壁２６と、第２ステム周壁２８と、空気用ピストン３０と、筒状部材４８と、ヘッド部材５０とを具備する。
本明細書においては、説明の都合上から、図１に示す如く、第１ステム周壁２６との第２ステム周壁２８と後述の第３ステム周壁５５（連結筒部）とで形成される筒状の構造をステム周壁ＳＰというものとし、またステム周壁ＳＰと筒状部材４８とでステムＳが形成されるものとする。 The actuating member 20 is assembled to the cylinder member 10 so as to be vertically movable in an upwardly urged state, and as shown in FIG. 1, the liquid piston 22, the first stem peripheral wall 26, and the second stem peripheral wall 28 The air piston 30, the tubular member 48, and the head member 50 are provided.
In the present specification, for convenience of explanation, as shown in FIG. 1, a tubular shape formed by a second stem peripheral wall 28 with a first stem peripheral wall 26 and a third stem peripheral wall 55 (connecting tubular portion) described later. The structure of is referred to as a stem peripheral wall SP, and the stem S is formed by the stem peripheral wall SP and the tubular member 48.

前記液体用ピストン２２は、液体用シリンダ１４内を摺動可能な摺接部２２ａを有し、摺接部２２ａより上下両端開口の縦筒部２２ｂを起立している。この縦筒部２２ｂは第１ステム周壁２６の下端部内面に嵌着されている。また縦筒部２２ｂの上端部に設けた第２液体用逆止弁座２２ｃと、この弁座の上に載置された前記テーパ状弁部１８ｃとで、第２液体用逆止弁ＶＬ２を形成している。前記縦筒部２２ｂの下部には前記コイルスプリングＣの上端部を係合させている。図示の摺接部２２ａは、上下スカート状に形成している。 The liquid piston 22 has a sliding contact portion 22a slidable in the liquid cylinder 14, and a vertical cylinder portion 22b having openings at both upper and lower ends stands up from the sliding contact portion 22a. The vertical cylinder portion 22b is fitted to the inner surface of the lower end portion of the first stem peripheral wall 26. Further, the second liquid check valve seat 22c provided at the upper end of the vertical cylinder portion 22b and the tapered valve portion 18c mounted on the valve seat form a second liquid check valve VL2. Is forming. The upper end portion of the coil spring C is engaged with the lower portion of the vertical cylinder portion 22b. The illustrated sliding contact portion 22a is formed in the shape of an upper and lower skirt.

前記第１ステム周壁２６は、後述の空気用ピストンの昇降を案内するピストンガイドとしての役割を有する。
本実施形態の第１ステム周壁２６は、上下両端を開口した筒状をなし、その筒壁下部内に液体用ピストン２２の縦筒部２２ｂを嵌合させて、この嵌合箇所より上方へ起立している。
そして前記第１ステム周壁２６は、その外面上部に空気用シリンダ１２内を摺動する空気用ピストン３０を昇降可能に連係させている。
前記第１ステム周壁２６の上部内には第３液体用逆止弁ＶＬ３を形成している。図示例の第３液体用逆止弁ＶＬ３は、第１ステム周壁２６の上部内面から内方へ突出されるテーパ状の弁座と、この弁座の上に載置された玉弁とで形成されている。玉弁上方の第１ステム周壁部分内には、玉弁押え手段を兼ねる後述の筒状部材４８の下半部が嵌合されている。
また第３液体用逆止弁ＶＬ３と第２液体用逆止弁座２２ｃとの間の第１ステム周壁２６の内面部分に内リブ２６ｅを縦設している。
さらに第１ステム周壁２６の外面の上下方向中間部にはフランジ状に突出した第２空気用逆止弁座２６ｂを設けており、この第２空気用逆止弁座２６ｂより上方に位置させて、第１ステム周壁の外面から、周方向に間隔をおいて複数の外リブ２６ａを縦設している。
第１ステム周壁２６の内部は、後述のヘッド部材５０のノズル５４に連通している。
なお、説明の都合上、液体用ピストン２２の内部からノズルヘッドＮに亘る流路部分を主流路Ｐ１と称する。 The first stem peripheral wall 26 has a role as a piston guide for guiding the raising and lowering of the air piston described later.
The peripheral wall 26 of the first stem of the present embodiment has a cylindrical shape with both upper and lower ends open, and the vertical tubular portion 22b of the liquid piston 22 is fitted in the lower portion of the tubular wall, and stands above the fitting portion. is doing.
The first stem peripheral wall 26 has an air piston 30 sliding in the air cylinder 12 linked to the upper part of the outer surface thereof so as to be able to move up and down.
A third liquid check valve VL3 is formed in the upper portion of the first stem peripheral wall 26. The third liquid check valve VL3 of the illustrated example is formed by a tapered valve seat protruding inward from the upper inner surface of the first stem peripheral wall 26 and a ball valve mounted on the valve seat. Has been done. A lower half portion of a tubular member 48, which will be described later, which also serves as a ball valve pressing means is fitted in the peripheral wall portion of the first stem above the ball valve.
Further, an inner rib 26e is vertically provided on the inner surface portion of the first stem peripheral wall 26 between the third liquid check valve VL3 and the second liquid check valve seat 22c.
Further, a flange-shaped protruding second air check valve seat 26b is provided at the vertical intermediate portion of the outer surface of the first stem peripheral wall 26, and is located above the second air check valve seat 26b. , A plurality of outer ribs 26a are vertically installed at intervals in the circumferential direction from the outer surface of the peripheral wall of the first stem.
The inside of the first stem peripheral wall 26 communicates with the nozzle 54 of the head member 50 described later.
For convenience of explanation, the flow path portion extending from the inside of the liquid piston 22 to the nozzle head N is referred to as a main flow path P1.

前記第２ステム周壁２８は、前記第１ステム周壁２６をヘッド部材５０に対して連結する継手筒としての役割を有する。
図示例の第２ステム周壁２８は、当該周壁の上部に形成された小外形部ｅを有し、この小外径部に後述のノズル部材５０の第３周壁（連結筒部）５５を連結させている。もっともこれらの構造は適宜変更することができる。
また前記第２ステム周壁２８の下部は前記第１ステム周壁２６の上部を囲み、この第１ステム周壁２６の上部に嵌着されている。
前記第２ステム周壁２８の内周下端部には第１大内径部ｄ１が凹設されており、この第１大内径部から前記小外径部の下端付近までの周壁部分の内面には、後述の連通路Ｐ２の一部である溝部が形成されており、この溝部は主流路へ開通している。
なお、前記第２ステム周壁２８の小外径部ｅ内には後述の筒状部材４８の上半部が嵌合されており、この上半部内には発泡手段Ｉが内蔵されている。 The second stem peripheral wall 28 has a role as a joint cylinder for connecting the first stem peripheral wall 26 to the head member 50.
The second stem peripheral wall 28 of the illustrated example has a small outer diameter portion e formed on the upper portion of the peripheral wall, and the third peripheral wall (connecting cylinder portion) 55 of the nozzle member 50 described later is connected to this small outer diameter portion. ing. However, these structures can be changed as appropriate.
Further, the lower portion of the second stem peripheral wall 28 surrounds the upper portion of the first stem peripheral wall 26, and is fitted to the upper portion of the first stem peripheral wall 26.
A first large inner diameter portion d1 is recessed in the inner peripheral lower end portion of the second stem peripheral wall 28, and the inner surface of the peripheral wall portion from the first large inner diameter portion to the vicinity of the lower end of the small outer diameter portion is formed. A groove portion that is a part of the communication passage P2 described later is formed, and this groove portion is open to the main flow path.
The upper half of the tubular member 48, which will be described later, is fitted in the small outer diameter portion e of the second stem peripheral wall 28, and the foaming means I is built in the upper half.

前記空気用ピストン３０は、第１ステム周壁２６と空気用シリンダ１２との間の空間を上下に仕切り、空気用シリンダ１２より下方にエアチャンバーＡを形成する役割を有する。
本実施形態において、前記空気用ピストン３０は、その内周側にスライド筒部３２を有し、このスライド筒部３２を第１ステム周壁２６外周に対して小幅の上下動が可能に嵌合させるとともに、前記スライド筒部３２の外周より延設した隔壁部３４を介して摺動壁部４２を突設している。
前記スライド筒部３２は、その筒壁の内面を第１ステム周壁２６外周の外リブ２６ａの外面に、また前記筒壁の上部の外面を、前記第２ステム周壁２８の第１大内径部ｄ１内にそれぞれ昇降可能に嵌合させることにより、第１大内径部ｄ１の頂面と、第２空気用逆止弁座２６ｂとの間を上下動可能に装着されている。
前記スライド筒部３２の下端部は、弁体として、前記第２空気用逆止弁座２６ｂの表面に突き当たるように設計されており、これらスライド筒部３２の下端部と第２空気用逆止弁座２６ｂで第２空気用逆止弁ＶＡ２を形成している。
そしてスライド筒部３２の下端部と第２空気用逆止弁座２６ｂとで第２空気用逆止弁ＶＡ２を形成している。
第２空気用逆止弁ＶＡ２は、作動部材２０が最上方へ押し上げられている場合には閉塞しており、作動部材２０が押し下げられた際には開弁し、さらに押し下げ状態から上方付勢力により上昇する際には閉塞する機能を有する。
なお、第２空気用逆止弁ＶＡ２から、第１ステム周壁２６とスライド筒部３２との間隙、第１ステム周壁２６と第２ステム周壁２８との間隙を経由して、第１ステム周壁２６内側の主流路Ｐ１との合流点Ｊへ至る連通路Ｐ２が形成されている。
前記隔壁部３４は、後述の外気導入路Ｐ３を介して外気を導入するための第１空気用逆止弁ＶＡ１を有する。図示例の隔壁部３４は、図２に示す如く、高段部である内周壁部３４ａから中段部である中間壁部３４ｂを介して低段部である外周壁部３４ｃへ階段状に低くなるように形成している。そして内周壁部３４ａから中間壁部３４ｂに亘って前記第１空気用逆止弁ＶＡ１が形成されている。
図示例の第１空気用逆止弁ＶＡ１は、内周壁部３４ａからこの内周壁部３４ａ及び中間壁部３４ｂの間の段差部分までを切り欠いた吸気孔３６と、この吸気孔の下側に取り付けた弁部材４４とからなる。
この弁部材４４は、前記スライド筒部３２に取り付けられた筒体の下部から弾性弁板を外方突設してなり、この弾性弁板を前記中間壁部３４ｂの下面へ当接させている。これらの構成は適宜変更することができる。
前記内周壁部３４ａのうち吸気孔形成箇所付近からカバー筒部３８が起立されている。これに関しては後述する。
前記摺動壁部４２は、空気用シリンダ１２内周に液密にかつ摺動可能に嵌合されている。図示の摺動壁部４２は上下スカート状に形成されている。 The air piston 30 has a role of vertically partitioning the space between the first stem peripheral wall 26 and the air cylinder 12 and forming the air chamber A below the air cylinder 12.
In the present embodiment, the air piston 30 has a slide cylinder portion 32 on the inner peripheral side thereof, and the slide cylinder portion 32 is fitted to the outer periphery of the first stem peripheral wall 26 so as to be able to move up and down by a small width. At the same time, the sliding wall portion 42 is projected via the partition wall portion 34 extending from the outer periphery of the slide cylinder portion 32.
The slide cylinder portion 32 has the inner surface of the cylinder wall as the outer surface of the outer rib 26a on the outer periphery of the first stem peripheral wall 26, and the upper outer surface of the cylinder wall as the first large inner diameter portion d1 of the second stem peripheral wall 28. By fitting them so as to be able to move up and down, they are mounted so as to be able to move up and down between the top surface of the first large inner diameter portion d1 and the second air check valve seat 26b.
The lower end of the slide cylinder 32 is designed to abut on the surface of the second air check valve seat 26b as a valve body, and the lower end of the slide cylinder 32 and the second air check valve seat 26b are designed to abut against the surface of the second air check valve seat 26b. The valve seat 26b forms a second air check valve VA2.
The lower end of the slide cylinder portion 32 and the second air check valve seat 26b form a second air check valve VA2.
The second air check valve VA2 is closed when the operating member 20 is pushed up to the uppermost position, opens when the operating member 20 is pushed down, and is further urged upward from the pushed down state. It has a function of blocking when it rises.
From the second air check valve VA2, the first stem peripheral wall 26 passes through the gap between the first stem peripheral wall 26 and the slide cylinder portion 32, and the gap between the first stem peripheral wall 26 and the second stem peripheral wall 28. A communication passage P2 leading to the confluence J with the inner main flow path P1 is formed.
The partition wall portion 34 has a first check valve VA1 for air for introducing outside air through the outside air introduction path P3 described later. As shown in FIG. 2, the partition wall portion 34 of the illustrated example is stepped down from the inner peripheral wall portion 34a, which is a high step portion, to the outer peripheral wall portion 34c, which is a low step portion, via the intermediate wall portion 34b, which is a middle step portion. It is formed like this. The first air check valve VA1 is formed from the inner peripheral wall portion 34a to the intermediate wall portion 34b.
The first air check valve VA1 in the illustrated example has an intake hole 36 cut out from the inner peripheral wall portion 34a to a stepped portion between the inner peripheral wall portion 34a and the intermediate wall portion 34b, and an intake hole 36 below the intake hole. It is composed of the attached valve member 44.
The valve member 44 has an elastic valve plate protruding outward from the lower part of the cylinder attached to the slide cylinder portion 32, and the elastic valve plate is brought into contact with the lower surface of the intermediate wall portion 34b. .. These configurations can be changed as appropriate.
The cover cylinder portion 38 stands up from the vicinity of the intake hole forming portion in the inner peripheral wall portion 34a. This will be described later.
The sliding wall portion 42 is liquid-tightly and slidably fitted to the inner circumference of the air cylinder 12. The illustrated sliding wall portion 42 is formed in the shape of an upper and lower skirt.

前記筒状部材４８は、流路を規制するとともに、発泡手段Ｉを保持する役割を有する。図示の筒状部材４８は、小径の下半部を第１ステム周壁２６の上端部に、また大径の上半部を、第２ステム周壁２８の上部にそれぞれ嵌合しており、その上半部内に前記発泡手段Ｉが嵌合されている。また筒状部材４８の下半部外面には、前記連通路Ｐ２の一部である連通溝４８ａが形成されている。
前記発泡手段Ｉは、メッシュｉ２を保持筒部ｉ１の端面に張設してなる。図示のように複数の保持筒部ｉ１を配置しても構わない。 The tubular member 48 has a role of restricting the flow path and holding the foaming means I. In the illustrated tubular member 48, the lower half of the small diameter is fitted to the upper end of the first stem peripheral wall 26, and the upper half of the large diameter is fitted to the upper part of the second stem peripheral wall 28. The foaming means I is fitted in the half portion. Further, a communication groove 48a, which is a part of the communication passage P2, is formed on the outer surface of the lower half of the tubular member 48.
The foaming means I stretches the mesh i2 on the end face of the holding cylinder portion i1. A plurality of holding cylinder portions i1 may be arranged as shown in the figure.

前記ヘッド部材５０は、本実施形態において、ヘッド部材の本体であるノズルヘッドＮから、第３ステム周壁である連結筒部５５を垂下してなる。
前記ノズルヘッドＮは、前記連結筒部５５の上端に頂壁部５１の裏面中央部を連結するとともに、頂壁部５１の外周からヘッド周壁５２を垂下し、かつ前記第２ステム周壁２８と連通するノズル５４を、前記ヘッド周壁５２を介して側外方へ突出している。もっともこれらの構造は適宜変更することができ、例えば第２ステム周壁２８を前記連結筒部５５と一体化して、ヘッド部材５０に組み込んでも構わない。 In the present embodiment, the head member 50 is formed by hanging a connecting cylinder portion 55, which is a peripheral wall of the third stem, from a nozzle head N, which is the main body of the head member.
The nozzle head N connects the central portion of the back surface of the top wall portion 51 to the upper end of the connecting cylinder portion 55, hangs the head peripheral wall 52 from the outer periphery of the top wall portion 51, and communicates with the second stem peripheral wall 28. Nozzle 54 is projected outward from the side through the head peripheral wall 52. However, these structures can be appropriately changed, and for example, the second stem peripheral wall 28 may be integrated with the connecting cylinder portion 55 and incorporated into the head member 50.

前記構成において、図１の状態から、ヘッド部材５０を押し下げると、第１ステム周壁２６及び空気用ピストン３０が下降するが、第１ステム周壁２６が空気用ピストン３０に比べて僅かに大きく下降するため、第２空気用逆止弁ＶＡ２が開き（図４参照）、そして空気用ピストン３０の下降によりエアチャンバーＡ内の空気が連通路Ｐ２を介して第１ステム周壁２６内部へ導入される。また前記ヘッド部材５０の押し下げにより、液体用ピストン２２が下降し、この液体用ピストン２２の下降に追従して、ポペット弁部材１８も第１液体用逆止弁座１５に当接するまで下降して第１液体用逆止弁ＶＬ１が閉じ、この当接の後にも第１ステム周壁２６及び液体用ピストン２２が下降するので第２液体用逆止弁ＶＬ２が開く（図４参照）。次に液体用シリンダ内部の高圧化により、第３液体用逆止弁ＶＬ３が開き、高圧化した液体が合流点Ｊで空気と混合する。この混合流体が発泡手段Ｉを通って起泡し、ノズルの吐出口５４から吐出される。 In the above configuration, when the head member 50 is pushed down from the state of FIG. 1, the first stem peripheral wall 26 and the air piston 30 are lowered, but the first stem peripheral wall 26 is slightly lowered as compared with the air piston 30. Therefore, the second air check valve VA2 opens (see FIG. 4), and the air in the air chamber A is introduced into the inside of the first stem peripheral wall 26 via the communication passage P2 by the lowering of the air piston 30. Further, by pushing down the head member 50, the liquid piston 22 descends, and following the descent of the liquid piston 22, the poppet valve member 18 also descends until it comes into contact with the first liquid check valve seat 15. The first liquid check valve VL1 closes, and the first stem peripheral wall 26 and the liquid piston 22 descend even after this contact, so that the second liquid check valve VL2 opens (see FIG. 4). Next, the pressure inside the liquid cylinder is increased, so that the third liquid check valve VL3 is opened, and the increased pressure liquid is mixed with air at the confluence point J. This mixed fluid foams through the foaming means I and is discharged from the discharge port 54 of the nozzle.

前記ヘッド部材５０の押圧を解放すると、コイルスプリングＣの付勢力によって作動部材２０が上昇し、その際に第１ステム周壁２６が空気用ピストン３０に対して上昇して第２空気用逆止弁ＶＡ２が閉じ、エアチャンバーＡ内の負圧化によって第１空気用逆止弁ＶＡ１が開くので、カバー筒部３８の上方から、空気が外気導入路Ｐ３及び第１空気用逆止弁ＶＡ１を通ってエアチャンバーＡ内へ入る。またポペット弁部材１８は、テーパ状弁部１８ｃと内リブ２６ｅとの摩擦力によって、第１ステム周壁２６の上昇に追従して上昇し、第１液体用逆止弁ＶＬ１が開くとともに、液体用シリンダ１４内の負圧化により、第３液体用逆止弁ＶＬ３が閉じる。負圧化した液体用シリンダ１４内には、容器体１００内の液体が吸い上げられる。ポペット弁部材１８は、係合突起１８ａがコイルスプリングＣの下端に当接するまで上昇し、当接により停止する。第１ステム周壁２６及び液体用ピストン２２は、ポペット弁部材１８が停止した後も上昇して、第２液体用逆止弁座２２ｃがテーパ状弁部１８ｃに当接することで、第２液体用逆止弁ＶＬ２が閉じる。 When the pressure of the head member 50 is released, the operating member 20 rises due to the urging force of the coil spring C, and at that time, the first stem peripheral wall 26 rises with respect to the air piston 30 and the second air check valve. Since the VA2 is closed and the first air check valve VA1 is opened due to the negative pressure in the air chamber A, air passes through the outside air introduction path P3 and the first air check valve VA1 from above the cover cylinder 38. And enter the air chamber A. Further, the poppet valve member 18 rises following the rise of the first stem peripheral wall 26 due to the frictional force between the tapered valve portion 18c and the inner rib 26e, and the first liquid check valve VL1 opens and is used for the liquid. The check valve VL3 for the third liquid closes due to the negative pressure in the cylinder 14. The liquid in the container body 100 is sucked up in the negative pressure cylinder 14 for liquid. The poppet valve member 18 rises until the engaging protrusion 18a abuts on the lower end of the coil spring C, and stops due to the abutment. The first stem peripheral wall 26 and the liquid piston 22 rise even after the poppet valve member 18 is stopped, and the second liquid check valve seat 22c comes into contact with the tapered valve portion 18c, so that the second liquid is used. The check valve VL2 closes.

本発明においては、前記空気用ピストン３０から前記内向きフランジ６のフランジ孔６ａの縁と前記ステムＳの外面との間を通って上方に延びるカバー筒部３８が起立されている。
このカバー筒部３８は、従来技術において、前記内向きフランジ６の内周から立設されていた、ステムを覆う起立周壁に代わるものである。本発明のカバー筒部３８は、空気用ピストン３０から起立されており、前述の通り、この空気用ピストン３０は、作動部材２０のノズルヘッドＮが押し下げられたときに、作動部材２０のステムＳに追従して下降するため、泡吐出器の全高を抑制することが可能である。従来の如く、起立周壁の上端とノズルヘッドとの間に作動部材のストロークに応じた押下げ代を取る必要がないからである。全高を抑制することにより、泡吐出器の重量の削減やコストの低減が可能となる。
前記カバー筒部３８は、前記作動部材２０のステムＳを囲み、カバー筒部３８の内面とステムＳの外面との間に外気導入路Ｐ３が形成されている。
本実施態様のカバー筒部３８は、フランジ孔６ａとステムＳとの隙間から水などの異物が流入することを阻止する機能を有し、カバー筒部３８の外面は、前記フランジ孔６ａに対して、スムーズに摺動することが可能で、隙間なく当接させ、或いは空気や水などの侵入を抑制できる程度に近接させるものとする。
前記カバー筒部３８の内面と前記ステムＳの外面との間には、外気導入路Ｐ３が形成されている。好適な図示例では、カバー筒部３８の内面に相互に間隔を存して前記ステムＳの外面に摺動可能に当接させた複数の縦凸条３８ａが縦設されており、これら縦凸条３８ａの間に外気導入路Ｐ３を形成している。
また図示例では、内向きフランジ６のフランジ孔６ａの孔縁から上方突出する起立周壁８を、カバー筒部３８の外面に摺接することが可能で、隙間なく当接させ、或いは空気や水などの侵入を抑制できる程度に近接させるものとする。これにより起立周壁８はカバー筒部３８の昇降を案内し、さらにカバー筒部３８が作動部材２０のステムＳの昇降を案内するので、ヘッド部材５０の斜め押し等によるカバー筒部３８及びステムＳの横ぶれを効果的に防止できる。
前記カバー筒部３８の長さは、少なくとも作動部材２０が下限位置まで下降したときに、カバー筒部３８が前記内向きフランジ６のフランジ孔６ａから脱落しない程度に設計するものとする。言い換えると、作動部材２０の下限位置において、カバー筒部３８の上端部の高さが内向きフランジ６の下面より低くならないように設計する。これにより作動部材の昇降が円滑に行われる。
本実施形態では、カバー筒部３８の内面と前記ステムＳの外面との間に外気導入路Ｐ３を形成するとともに、前記カバー筒部３８を、作動部材２０の上限位置でのノズルヘッドＮの下面付近まで起立している。ノズルヘッドＮはカバー筒部３８より大外径であり、この状態でカバー筒部３８の上方を覆っているから、この構成により、前記外気導入路Ｐ３の上端の空気取り込み口hを高くして、シャワーなどの水が侵入しづらい構造となっている。この態様では外気導入路Ｐ３の流路面積をより大きくすることができる。
好適な図示例では、ノズルヘッドＮの裏面から、カバー筒部３８より大径の補助筒部５３を、ヘッド周壁５２と同程度の長さに垂下し、この補助筒部５３の下端より上方にカバー筒部３８を起立している。この構成とすると、さらに外気導入路Ｐ３内へ水が入りにくくすることができる。
前記カバー筒部３８は、前記内周壁部３４ａのうち吸気孔形成箇所付近から起立されている。図示例では、吸気孔３６がカバー筒部３８の内側から外側へ亘って形成しており、これにより、内向きフランジ６と空気用ピストン３０との間の空間のうちカバー筒部３８の外側の空間部分が外気導入路Ｐ３と連通するので、空気用ピストン３０が下降したときに当該空間部分が負圧化することがない。
なお、前記補助筒部５３の下端面と内向きフランジ６と上面の間には、図１に想像線で示すスペーサＴを取り付けることができる。 In the present invention, a cover cylinder portion 38 extending upward from the air piston 30 through between the edge of the flange hole 6a of the inward flange 6 and the outer surface of the stem S is erected.
The cover cylinder portion 38 replaces the upright peripheral wall covering the stem, which was erected from the inner circumference of the inward flange 6 in the prior art. The cover cylinder portion 38 of the present invention stands up from the air piston 30, and as described above, the air piston 30 has the stem S of the operating member 20 when the nozzle head N of the operating member 20 is pushed down. It is possible to suppress the total height of the foam ejector because it descends following the above. This is because it is not necessary to take a pushing allowance according to the stroke of the operating member between the upper end of the upright peripheral wall and the nozzle head as in the conventional case. By suppressing the total height, it is possible to reduce the weight and cost of the foam ejector.
The cover cylinder portion 38 surrounds the stem S of the actuating member 20, and an outside air introduction path P3 is formed between the inner surface of the cover cylinder portion 38 and the outer surface of the stem S.
The cover cylinder portion 38 of the present embodiment has a function of preventing foreign matter such as water from flowing through the gap between the flange hole 6a and the stem S, and the outer surface of the cover cylinder portion 38 has a function of preventing foreign matter such as water from flowing into the flange hole 6a. Therefore, it is possible to slide smoothly, and the contact is made without a gap, or the proximity is such that the intrusion of air, water, etc. can be suppressed.
An outside air introduction path P3 is formed between the inner surface of the cover cylinder 38 and the outer surface of the stem S. In a preferred illustrated example, a plurality of vertically convex strips 38a slidably contacted with the outer surface of the stem S at intervals from each other are vertically provided on the inner surface of the cover cylinder portion 38. The outside air introduction path P3 is formed between the articles 38a.
Further, in the illustrated example, the upright peripheral wall 8 projecting upward from the hole edge of the flange hole 6a of the inward flange 6 can be slidably contacted with the outer surface of the cover cylinder portion 38, and is brought into contact with the outer surface without a gap, or air, water, or the like. It shall be close enough to suppress the invasion of. As a result, the upright peripheral wall 8 guides the elevating and lowering of the cover cylinder portion 38, and further, the cover cylinder portion 38 guides the elevating and lowering of the stem S of the operating member 20. Can effectively prevent lateral movement.
The length of the cover cylinder portion 38 shall be designed so that the cover cylinder portion 38 does not fall off from the flange hole 6a of the inward flange 6 at least when the actuating member 20 is lowered to the lower limit position. In other words, the height of the upper end portion of the cover cylinder portion 38 is designed not to be lower than the lower surface of the inward flange 6 at the lower limit position of the actuating member 20. As a result, the operating member can be smoothly moved up and down.
In the present embodiment, the outside air introduction path P3 is formed between the inner surface of the cover cylinder portion 38 and the outer surface of the stem S, and the cover cylinder portion 38 is placed on the lower surface of the nozzle head N at the upper limit position of the operating member 20. It stands up to the vicinity. Since the nozzle head N has a larger outer diameter than the cover cylinder portion 38 and covers the upper part of the cover cylinder portion 38 in this state, the air intake port h at the upper end of the outside air introduction path P3 is raised by this configuration. , The structure is such that it is difficult for water such as showers to enter. In this aspect, the flow path area of the outside air introduction path P3 can be made larger.
In a preferred illustrated example, an auxiliary cylinder portion 53 having a diameter larger than that of the cover cylinder portion 38 is hung from the back surface of the nozzle head N to a length similar to that of the head peripheral wall 52, and is above the lower end of the auxiliary cylinder portion 53. The cover cylinder portion 38 is upright. With this configuration, it is possible to further prevent water from entering the outside air introduction path P3.
The cover cylinder portion 38 stands up from the vicinity of the intake hole forming portion in the inner peripheral wall portion 34a. In the illustrated example, the intake hole 36 is formed from the inside to the outside of the cover cylinder portion 38, whereby the space between the inward flange 6 and the air piston 30 is formed on the outside of the cover cylinder portion 38. Since the space portion communicates with the outside air introduction path P3, the space portion does not become negative pressure when the air piston 30 descends.
A spacer T shown by an imaginary line in FIG. 1 can be attached between the lower end surface of the auxiliary cylinder portion 53, the inward flange 6 and the upper surface.

以下、本発明の他の実施形態に係る泡吐出器を説明する。これらの説明において第１実施形態と同じ構成に関しては解説を省略する。 Hereinafter, the foam ejector according to another embodiment of the present invention will be described. In these explanations, the description of the same configuration as that of the first embodiment will be omitted.

図５から図７は、本発明の第２実施形態に係る泡吐出器を示している。
この実施形態では、第１実施形態の構成中のポペット弁部材を削除する代わりに、作動部材２０のステムＳを、ステム周壁（第１ステム周壁２６と第２ステム周壁２８と第３ステム周壁５８とからなる周壁）ＳＰに棒状部材２４を組み付けて形成するとともに、このステムＳに対して液体用ピストン２２を昇降可能とし、この液体用ピストン２２と空気用ピストン３０との間にエア用シール手段ＡＳを、また液体用ピストン２２とステムＳとの間に液用シール手段ＬＳをそれぞれ設け、これら両シール手段のシール機能を発揮させるために、前記液体用ピストン２２及び空気用ピストン３０をステムＳの一部と装着部材２の内向きフランジ６との間に挟持させる構造（棒状部材の外向きフランジ２４ｃ及び***壁部４０）を設けたものである。以下、具体的に説明する。
なお、本実施形態における作動部材２０は、ノズルヘッドＮを上端部に付設したステムＳの外面の上半側に空気用ピストン３０を、また当該ステムの外面の下半側に液体用ピストン２２をそれぞれ昇降可能に取り付けたものである。第１実施形態の構成のうち筒状部材は有していない。以下、具体的に説明する。 5 to 7 show a foam ejector according to a second embodiment of the present invention.
In this embodiment, instead of deleting the poppet valve member in the configuration of the first embodiment, the stem S of the operating member 20 is replaced with the stem peripheral wall (the first stem peripheral wall 26, the second stem peripheral wall 28, and the third stem peripheral wall 58). A rod-shaped member 24 is assembled to the SP to form a rod-shaped member 24, and the liquid piston 22 can be raised and lowered with respect to the stem S, and an air sealing means is provided between the liquid piston 22 and the air piston 30. The AS is provided, and the liquid sealing means LS is provided between the liquid piston 22 and the stem S, respectively. In order to exert the sealing function of both of these sealing means, the liquid piston 22 and the air piston 30 are provided with the stem S. A structure (outward facing flange 24c of the rod-shaped member and raised wall portion 40) is provided between a part of the mounting member 2 and the inward facing flange 6 of the mounting member 2. Hereinafter, a specific description will be given.
The operating member 20 in the present embodiment has an air piston 30 on the upper half side of the outer surface of the stem S having the nozzle head N attached to the upper end portion, and a liquid piston 22 on the lower half side of the outer surface of the stem. Each is attached so that it can be raised and lowered. It does not have a tubular member in the configuration of the first embodiment. Hereinafter, a specific description will be given.

本実施形態のステムＳは、ノズルヘッドＮと連続するステム周壁ＳＰの下部内に縦向きの棒状部材２４の外面を嵌合させるとともに（図６参照）、前記液体用ピストン２２が、前記棒状部材２４を囲むように、また空気用ピストン３０が、前記ステム周壁ＳＰを囲むようにそれぞれステムＳに対して上下動可能に組み付けられている。
前記液体用ピストン２２は、液体用シリンダ１４の内面を摺動する摺接部２２ａから起立された縦筒部２２ｂの上下方向中間部から内方張出壁部ｆ１を介して嵌挿筒部２２ｄを起立するとともに、縦筒部２２ｂの上端部に形成された外方張出壁部ｆ２からリング状***壁２２ｅを上外方へ***させている。
前記内方張出壁部ｆ１の下面と前記嵌挿筒部２２ｄの内面との間の角部で液用シール部ｓ１が形成されている（図６参照）。もっともこの構造は適宜変更することができ、図示しないが、例えば前記内方張出壁部ｆ１の下面に周設させた垂下板部で液用シール部ｓ１を形成しても構わない。
また前記リング状***壁２２ｅの内周面でエア用シール受面ｒ２が形成されている。
前記ステム周壁ＳＰは、図５に示す如く、第１ステム周壁２６の上部を第２ステム周壁２８の下部内に、また第２ステム周壁２８の上部を第３ステム周壁５５内に連結させてなる。また前記第１ステム周壁２６の下部には第２大内径部ｄ２が形成され、この第２大内径部ｄ２内に前記嵌挿筒部２２ｄを摺動可能に嵌合させている。
第１実施形態と異なり、本実施形態の第２ステム周壁２８は、下側筒部２８ａと上側筒部２８ｃとの間にくびれ部２８ｂを設けた構造としている。また第１実施形態の筒状部材４８及び第３液体用逆止弁ＶＬ３を省略するとともに、第１ステム周壁２６の上部の内部に、有頂筒状の流路規制手段２６ｃを形成している。この流路規制手段２６ｃの筒壁には連通孔を周方向に複数開口させている。また第２ステム周壁２８の上側筒部２８ｃ内に、発泡手段Ｉが配置されている。 In the stem S of the present embodiment, the outer surface of the vertically oriented rod-shaped member 24 is fitted in the lower portion of the stem peripheral wall SP continuous with the nozzle head N (see FIG. 6), and the liquid piston 22 is the rod-shaped member. The air piston 30 is assembled so as to surround the stem 24 and to surround the stem peripheral wall SP so as to be movable up and down with respect to the stem S, respectively.
The liquid piston 22 is fitted and inserted from the vertical intermediate portion of the vertical cylinder portion 22b erected from the sliding contact portion 22a sliding on the inner surface of the liquid cylinder 14 via the inward overhanging wall portion f1. The ring-shaped raised wall 22e is raised upward and outward from the outer overhanging wall portion f2 formed at the upper end portion of the vertical cylinder portion 22b.
The liquid seal portion s1 is formed at the corner portion between the lower surface of the inward overhanging wall portion f1 and the inner surface of the fitting / inserting cylinder portion 22d (see FIG. 6). However, this structure can be changed as appropriate, and although not shown, for example, the liquid seal portion s1 may be formed by a hanging plate portion provided around the lower surface of the inward overhanging wall portion f1.
Further, an air seal receiving surface r2 is formed on the inner peripheral surface of the ring-shaped raised wall 22e.
As shown in FIG. 5, the stem peripheral wall SP is formed by connecting the upper portion of the first stem peripheral wall 26 to the lower portion of the second stem peripheral wall 28 and the upper portion of the second stem peripheral wall 28 to the third stem peripheral wall 55. .. Further, a second large inner diameter portion d2 is formed in the lower portion of the first stem peripheral wall 26, and the fitting insertion cylinder portion 22d is slidably fitted in the second large inner diameter portion d2.
Unlike the first embodiment, the second stem peripheral wall 28 of the present embodiment has a structure in which a constricted portion 28b is provided between the lower tubular portion 28a and the upper tubular portion 28c. Further, the tubular member 48 and the check valve VL3 for the third liquid of the first embodiment are omitted, and the ecstatic tubular flow path regulating means 26c is formed inside the upper part of the peripheral wall 26 of the first stem. .. A plurality of communication holes are opened in the circumferential direction on the cylinder wall of the flow path regulating means 26c. Further, the foaming means I is arranged in the upper tubular portion 28c of the second stem peripheral wall 28.

棒状部材２４は、全体として縦方向に長い略棒状の部材であり、図示例では、下端を底部（仕切り板部２４ｄ）で閉塞させた筒体に形成されている。
図示例では、前記棒状部材２４は、長手方向（上下方向）の中間部に外向きフランジ２４ｃを付設しており、この外向きフランジ２４ｃによって下半筒部２４ａと上半筒部２４ｂとに区分されている。この上半筒部２４ｂは、前記第１ステム周壁２６の下部内に嵌着されているとともに、上半筒部２４ｂの筒壁下部に通液孔２４ｅを開口させてなる。
また図示例では、棒状部材の長手方向（上下方向）ほぼ中間部に位置させて、当該棒状部材の外面から外向きフランジ２４ｃを突出している。この外向きフランジ２４ｃは、コイルスプリングＣの上端の上に載置されており、作動部材２０全体が外向きフランジ２４ｃを介して上方へ付勢されている。
前記外向きフランジ２４ｃの内端部から前記上半筒部２４ｂの筒壁下端部に亘る箇所には、図６に示す如く、テーパ形状の肉盛りを行って、肉盛り箇所（テーパ部）の外面を液用シール受面ｒ１に形成させている。この液用シール受面ｒ１と前記液用シール部ｓ１とは、第２液体用逆止弁ＶＬ２を兼ねる液用シール手段ＬＳを形成する。これに関しては後述する。
前記外向きフランジ２４ｃの外端は、図６に示す如く、前記縦筒部２２ｂの内面に近接させているが、摺動可能に当接させても構わない。前記外向きフランジ２４ｃの外端の周方向の一部には液体通過用の切溝ｍを形成する。 The rod-shaped member 24 is a substantially rod-shaped member that is long in the vertical direction as a whole, and is formed in a tubular body whose lower end is closed by a bottom portion (partition plate portion 24d) in the illustrated example.
In the illustrated example, the rod-shaped member 24 is provided with an outward flange 24c in the middle portion in the longitudinal direction (vertical direction), and is divided into a lower half cylinder portion 24a and an upper half cylinder portion 24b by the outward flange 24c. Has been done. The upper half cylinder portion 24b is fitted in the lower portion of the first stem peripheral wall 26, and a liquid passage hole 24e is opened in the lower portion of the cylinder wall of the upper half cylinder portion 24b.
Further, in the illustrated example, the outward flange 24c is projected from the outer surface of the rod-shaped member so as to be positioned substantially in the middle portion in the longitudinal direction (vertical direction) of the rod-shaped member. The outward flange 24c is placed on the upper end of the coil spring C, and the entire operating member 20 is urged upward via the outward flange 24c.
As shown in FIG. 6, a tapered shape is built up at a portion extending from the inner end portion of the outward flange 24c to the lower end portion of the cylinder wall of the upper half cylinder portion 24b, and the overlaying portion (tapered portion) is formed. The outer surface is formed on the liquid seal receiving surface r1. The liquid seal receiving surface r1 and the liquid seal portion s1 form a liquid seal means LS that also serves as a second check valve VL2 for liquid. This will be described later.
As shown in FIG. 6, the outer end of the outward flange 24c is close to the inner surface of the vertical cylinder portion 22b, but may be slidably contacted. A cut groove m for passing liquid is formed in a part of the outer end of the outward flange 24c in the circumferential direction.

空気用ピストン３０は、スライド筒部３２と摺動壁部４２とを連結する隔壁部３４の一部に、作動部材２０の上限位置で内向きフランジ６の裏面への当接用の***壁部４０を形成している。
本実施形態では、前記隔壁部３４は、第１実施形態のそれと異なり、図６に示す如く、中段部である内周壁部３４ａから高段部である中間壁部３４ｂを介して低段部である外周壁部３４ｃを連続形成している。そして、前記***壁部４０は、前記隔壁部３４の内周壁部３４ａの外側部分を上方へ***させて、前記ステムＳを囲む内筒部４０ａ及び外筒部４０ｂの各上端を、内向きフランジ６裏面への当接用壁部である環状の上壁部４０ｃで連結させることで形成している。また図示例では、前記内筒部４０ａの上部からカバー筒部３８を上方へ延設しており、作動部材２０の上限位置において、このカバー筒部３８の外側で***壁部４０の上壁部４０ｃが内向きフランジ６の内周部下面全体に当接するように形成している。
ステムＳを囲む全周において、内向きフランジ６を空気用ピストン３０に圧接させることにより、前記エア用シール手段ＡＳ及び液用シール手段ＬＳに対して均等に圧接力を伝達させることができる。もっともこの構造は適宜変更することが変更することができる。図示しないが、例えば内向きフランジ６のフランジ孔６ａの孔縁から、空気用ピストン押下げ用の垂下筒部を垂下させても構わない。
図示例では、前記***壁部４０の内筒部４０ａの上部には、吸気孔３６が開口され、この吸気孔３６と前記内筒部４０ａの下部に取り付けられた弁部材４４とで第１空気用逆止弁ＶＡ１が形成されている。図示の弁部材４４は、内筒部４０ａの下部に嵌合された筒体の下端から弾性弁板を外方突出してなり、この弾性弁板を前記中間壁部３４ｂの下面に当接させてなる。
また***壁部４０内には、前記上壁部４０ｃから、内筒部４０ａ及び外筒部４０ｂに両端部を連続させた押さえ板部ｑを垂下しており、この押さえ板部の下端部に前記弁部材４４の弁体の上端を突き当てている。
また前記外筒部４０ｂには、空気用ピストン３０と内向きフランジ６との間の空間を外気導入路Ｐ３へ連通させる連通口３７を開口している（図６参照）。
また本実施形態では、図６に示す如く、前記スライド筒部３２の下端部付近からエア用シール部ｓ２を下方へ突出して、このエア用シール部ｓ２が前記エア用シール受面ｒ２に突き当たるように設計されており、これらエア用シール部ｓ２とエア用シール受面ｒ２とで第２空気用逆止弁ＶＡ２を兼ねるエア用シール手段ＡＳが形成されている。
図示例では、スライド筒部３２の下端部を隔壁部３４の内周壁部３４ａの内端部に連結しており、この連結箇所より内側からエア用シール部ｓ２として筒状突部を突設している。もっともこれらの構造は適宜変更することができる。

The air piston 30 has a raised wall portion for contacting the back surface of the inward flange 6 at the upper limit position of the operating member 20 on a part of the partition wall portion 34 connecting the slide cylinder portion 32 and the sliding wall portion 42. Forming 40.
In the present embodiment, unlike that of the first embodiment, the partition wall portion 34 is a lower step portion from the inner peripheral wall portion 34a, which is a middle step portion, via an intermediate wall portion 34b, which is a higher step portion, as shown in FIG. A certain outer peripheral wall portion 34c is continuously formed. Then, the raised wall portion 40 raises the outer portion of the inner peripheral wall portion 34a of the partition wall portion 34 upward, and the upper ends of the inner cylinder portion 40a and the outer cylinder portion 40b surrounding the stem S are flanged inward. 6 It is formed by connecting with an annular upper wall portion 40c, which is a wall portion for contact with the back surface. Further, in the illustrated example, the cover cylinder portion 38 extends upward from the upper portion of the inner cylinder portion 40a, and at the upper limit position of the operating member 20, the upper wall of the raised wall portion 40 is outside the cover cylinder portion 38. The portion 40c is formed so as to abut on the entire lower surface of the inner peripheral portion of the inward flange 6.
By pressing the inward flange 6 against the air piston 30 on the entire circumference surrounding the stem S, the pressure contact force can be evenly transmitted to the air sealing means AS and the liquid sealing means LS. However, this structure can be changed as appropriate. Although not shown, for example, the hanging cylinder portion for pushing down the air piston may be hung from the hole edge of the flange hole 6a of the inward flange 6.
In the illustrated example, an intake hole 36 is opened in the upper portion of the inner cylinder portion 40a of the raised wall portion 40, and the first air is provided by the intake hole 36 and the valve member 44 attached to the lower portion of the inner cylinder portion 40a. A check valve VA1 is formed. The illustrated valve member 44 has an elastic valve plate protruding outward from the lower end of a cylinder fitted to the lower portion of the inner cylinder portion 40a, and the elastic valve plate is brought into contact with the lower surface of the intermediate wall portion 34b. Become.
Further, in the raised wall portion 40, a pressing plate portion q having both ends continuous to the inner cylinder portion 40a and the outer cylinder portion 40b is hung from the upper wall portion 40c, and is hung from the lower end portion of the pressing plate portion. The upper end of the valve body of the valve member 44 is abutted against the valve body.
Further, the outer cylinder portion 40b is opened with a communication port 37 for communicating the space between the air piston 30 and the inward flange 6 to the outside air introduction path P3 (see FIG. 6).
Further, in the present embodiment, as shown in FIG. 6, the air seal portion s2 protrudes downward from the vicinity of the lower end portion of the slide cylinder portion 32, and the air seal portion s2 abuts on the air seal receiving surface r2. The air sealing portion s2 and the air sealing receiving surface r2 form an air sealing means AS that also serves as a second air check valve VA2.
In the illustrated example, the lower end portion of the slide cylinder portion 32 is connected to the inner end portion of the inner peripheral wall portion 34a of the partition wall portion 34, and the tubular protrusion portion is projected from the inside of this connection portion as the air seal portion s2. ing. However, these structures can be changed as appropriate.

本発明において、泡吐出器は、作動部材２０が上限位置にある図１に示す状態で、吐出路Ｐ１内の液用シール手段ＬＳ形成箇所、及び連通路Ｐ２の入り口であるエア用シール手段ＡＳ形成箇所の２か所でシールされている。
すなわち、コイルスプリングＣで上方付勢された棒状部材２４の液用シール受面ｒ１の上に液体用ピストン２２の液用シール部ｓ１が、また液体用ピストン２２のエア用シール受面ｒ２の上に空気用ピストン３０のエア用シール部ｓ２がそれぞれ載置されており、そして前記内向きフランジ６の下面には前記***壁部４０の上壁部４０ｃが当接されている。そしてコイルスプリングＣの下端はシリンダ部材１０の下部に係止されており、かつシリンダ部材１０の上端部は装着部材２に対して固定されている。
従って図６に示すようにコイルスプリングＣが作動部材２０を押し上げる作用（上方付勢力Ｆ１）と内向きフランジ６からの反作用（押下げ力Ｆ２）とにより空気用ピストン３０の隔壁部３４から液体用ピストン２２の内方張出壁部ｆ１に亘る部分が上下方向から挟み付けられる。これにより、例えば泡吐出器を装着した容器を倒したり、或いは何らかの理由で容器体の内圧が上昇した際に、シリンダ部材１０に対して液体用ピストン２２及び空気用ピストン３０がガタツクことを防止でき、液用シール手段ＬＳ及びエア用シール手段ＡＳのシール性能を高めることができる。
すなわち、前記液用シール手段ＬＳは、前述の通り、液用シール受面ｒ１と液用シール部ｓ１とで形成されているが、コイルスプリングＣの上方付勢力により、液用シール部ｓ１が液用シール受面ｒ１に強制的に圧接され、特に図示例では傾斜面である液用シール受面ｒ１に角状の液用シール部ｓ１が喰い込むように構成されているため、既述の特許文献１の如く、筒状の液用ピストンの上端部にポペット弁部材の大径の上端部が載置され、自重によりシールされている構成に比べてシール性能が向上する。
またエア用シール手段ＡＳは、前述の通り、エア用シール受面ｒ２とエア用シール部ｓ２とで形成されているが、やはり、コイルスプリングＣの上方付勢力により、エア用シール部ｓ２がエア用シール受面ｒ２に強制的に圧接され、特に図示例ではエア用シール受面ｒ２のうち傾斜面である部分に、スライド筒部３２の筒壁下端付近に形成されるエア用シール部ｓ２が喰い込むために、特許文献１の如く、単に作動部材のステムに形成されたフランジ状の弁座に、当該ステムに昇降可能に連係させた空気用ピストンの一部が着座するだけの構造に比べて、シール性能が向上する。
これにより、泡などが連通路Ｐ２からエアチャンバーＡ内に浸入するなどの不都合を回避することができる。 In the present invention, the foam discharger has the liquid sealing means LS forming portion in the discharge path P1 and the air sealing means AS which is the inlet of the communication passage P2 in the state shown in FIG. 1 in which the operating member 20 is in the upper limit position. It is sealed at two places where it is formed.
That is, the liquid seal portion s1 of the liquid piston 22 is on the liquid seal receiving surface r1 of the rod-shaped member 24 upwardly urged by the coil spring C, and the air seal receiving surface r2 of the liquid piston 22 is above. The air seal portion s2 of the air piston 30 is placed therein, and the upper wall portion 40c of the raised wall portion 40 is in contact with the lower surface of the inward flange 6. The lower end of the coil spring C is locked to the lower part of the cylinder member 10, and the upper end of the cylinder member 10 is fixed to the mounting member 2.
Therefore, as shown in FIG. 6, the action of the coil spring C pushing up the operating member 20 (upward urging force F1) and the reaction from the inward flange 6 (pushing force F2) cause the liquid from the partition wall portion 34 of the air piston 30. A portion of the piston 22 extending inwardly overhanging wall portion f1 is sandwiched from above and below. This makes it possible to prevent the liquid piston 22 and the air piston 30 from rattling with respect to the cylinder member 10, for example, when the container equipped with the foam discharger is tilted or the internal pressure of the container body rises for some reason. , The sealing performance of the liquid sealing means LS and the air sealing means AS can be improved.
That is, as described above, the liquid sealing means LS is formed by the liquid sealing receiving surface r1 and the liquid sealing portion s1, but the liquid sealing portion s1 is formed by the upward urging force of the coil spring C. Since the liquid seal receiving surface r1 is forcibly pressed against the liquid seal receiving surface r1 and the angular liquid sealing portion s1 bites into the liquid seal receiving surface r1 which is an inclined surface in the illustrated example, the above-mentioned patent. As in Document 1, a large-diameter upper end of the poppet valve member is placed on the upper end of the tubular liquid piston, and the sealing performance is improved as compared with the configuration in which the poppet valve member is sealed by its own weight.
Further, as described above, the air sealing means AS is formed by the air sealing receiving surface r2 and the air sealing portion s2, but again, due to the upward urging force of the coil spring C, the air sealing portion s2 is aired. The air seal portion s2 is forcibly pressed against the air seal receiving surface r2, and in particular, in the illustrated example, the air seal portion s2 formed near the lower end of the cylinder wall of the slide cylinder portion 32 is formed on the inclined surface portion of the air seal receiving surface r2. Compared to a structure in which a part of an air piston linked to the stem so as to be able to move up and down is simply seated on a flange-shaped valve seat formed on the stem of the operating member in order to bite into the stem. Therefore, the sealing performance is improved.
This makes it possible to avoid inconveniences such as bubbles entering the air chamber A from the communication passage P2.

２…装着部材 ４…装着筒部 ６…内向きフランジ ６ａ…フランジ孔
７…シール筒部 ８…起立周壁 ９…垂下壁部
１０…シリンダ部材 １２…空気用シリンダ １３…通気孔
１４…液体用シリンダ １４ａ…縮径部 １４ｂ…係止リブ
１５…第１液体用逆止弁座
１６…取付筒部 １７…吸い上げパイプ
１８…ポペット弁部材 １８ａ…係合突起 １８ｂ…下端部
１８ｃ…テーパ状弁部
２０…作動部材
２２…液体用ピストン ２２ａ…摺接部
２２ｂ…縦筒部 ２２ｃ…第２液体用逆止弁座 ２２ｄ…嵌挿筒部
２２ｅ…リング状***部
２４…棒状部材 ２４ａ…下半筒部 ２４ｂ…上半筒部 ２４ｃ…外向きフランジ
２４ｄ…仕切り板部 ２４ｅ…通液孔 ２４ｆ…スリット
２６…第１ステム周壁（ピストンガイド） ２６ａ…外リブ
２６ｂ…第２空気用逆止弁座 ２６ｃ…流路規制手段
２６ｄ…縦突条 ２６ｅ…内リブ
２８…第２ステム周壁 ２８ａ…下側筒部 ２８ｂ…くびれ部 ２８ｃ…上側筒部
３０…空気用ピストン ３２…スライド筒部
３４…隔壁部 ３４ａ…内周壁部 ３４ｂ…中間壁部 ３４ｃ…外周壁部
３６…吸気孔 ３７…連通口
３８…カバー筒部 ３８ａ…縦凸条 ３８ｂ…縦溝部
４０…***壁部 ４０ａ…内筒部 ４０ｂ…外筒部 ４０ｃ…上壁部 ４１…押さえ板
４２…摺動壁部 ４４…弁部材
４８…筒状部材 ４８ａ…連通溝
５０…ヘッド部材 ５１…頂壁部 ５２…ヘッド周壁 ５３…補助筒部
５４…吐出口（ノズル）
５５…第３ステム周壁(連結筒部)
１００…容器体 １０２…口頸部
Ａ…エアチャンバー ＡＳ…エア用シール手段 ｂ…鍔部
Ｃ…コイルスプリング
ｄ１…第１大内径部 ｄ２…第２大内径部 ｅ…小外径部
ｆ…張出板部 ｆ１…内方張出板部 ｆ２…外方張出板部 ｈ…空気取り込み口
Ｉ…発泡手段 ｉ１…保持筒部 ｉ２…メッシュ
Ｊ…合流点 ＬＳ…液用シール手段 ｍ…切溝
Ｎ…ノズルヘッド ｐ…パッキン Ｐ１…主流路 Ｐ２…連通路 Ｐ３…外気導入路
ｑ…押さえ板
Ｒ…気液混合室 ｒ１…液用シール受面 ｒ２…エア用シール受面
Ｓ…ステム ＳＰ…ステム周壁
ｓ１…液用シール部 ｓ２…エア用シール部 Ｔ…スペーサ
ＶＬ１…第１液体用逆止弁 ＶＬ２…第２液体用逆止弁 ＶＬ３…第３液体用逆止弁
ＶＡ１…第１空気用逆止弁 ＶＡ２…第２空気用逆止弁

2 ... Mounting member 4 ... Mounting cylinder 6 ... Inward flange 6a ... Flange hole 7 ... Seal cylinder 8 ... Standing peripheral wall 9 ... Hanging wall 10 ... Cylinder member 12 ... Air cylinder 13 ... Vent hole 14 ... Liquid cylinder 14a ... Reduced diameter part 14b ... Locking rib 15 ... Check valve seat for first liquid 16 ... Mounting cylinder part 17 ... Suction pipe 18 ... Poppet valve member 18a ... Engagement protrusion 18b ... Lower end part 18c ... Tapered valve part 20 ... Operating member 22 ... Liquid piston 22a ... Sliding contact part 22b ... Vertical cylinder part 22c ... Second liquid check valve seat 22d ... Fitting cylinder part 22e ... Ring-shaped ridge part 24 ... Rod-shaped member 24a ... Lower half cylinder part 24b ... Upper half cylinder part 24c ... Outward flange 24d ... Partition plate part 24e ... Liquid passage hole 24f ... Slit 26 ... First stem peripheral wall (piston guide) 26a ... Outer rib 26b ... Second air check valve seat 26c ... Flow path regulating means 26d ... Vertical ridge 26e ... Inner rib 28 ... Second stem peripheral wall 28a ... Lower cylinder 28b ... Constriction 28c ... Upper cylinder 30 ... Air piston 32 ... Slide cylinder
34 ... Partition wall 34a ... Inner peripheral wall 34b ... Intermediate wall 34c ... Outer wall 36 ... Intake hole 37 ... Communication port 38 ... Cover cylinder 38a ... Vertical ridge 38b ... Vertical groove 40 ... Raised wall 40a ... Inner cylinder Part 40b ... Outer cylinder part 40c ... Upper wall part 41 ... Holding plate
42 ... Sliding wall part 44 ... Valve member 48 ... Cylindrical member 48a ... Communication groove 50 ... Head member 51 ... Top wall part 52 ... Head peripheral wall 53 ... Auxiliary cylinder part 54 ... Discharge port (nozzle)
55 ... Third stem peripheral wall (connecting cylinder)
100 ... Container body 102 ... Mouth neck A ... Air chamber AS ... Air sealing means b ... Flange C ... Coil spring d1 ... 1st large inner diameter part d2 ... 2nd large inner diameter part e ... Small outer diameter part f ... Tension Outlet plate part f1 ... Inner overhang plate part f2 ... Outer overhang plate part h ... Air intake port I ... Foaming means i1 ... Holding cylinder part i2 ... Mesh J ... Confluence point LS ... Liquid sealing means m ... Cutting groove N ... Nozzle head p ... Packing P1 ... Main flow path P2 ... Continuous passage P3 ... Outside air introduction path
q ... Press plate R ... Gas-liquid mixing chamber r1 ... Liquid seal receiving surface r2 ... Air seal receiving surface S ... Stem SP ... Stem peripheral wall s1 ... Liquid sealing part s2 ... Air sealing part T ... Spacer VL1 ... First Check valve for liquid VL2 ... Check valve for second liquid VL3 ... Check valve for third liquid VA1 ... Check valve for first air VA2 ... Check valve for second air

Claims (4)

容器体の口頸部へ装着可能な装着筒部(４)の上部から内向きフランジ(６)を内方突出してなる装着部材(２)と、
この装着部材(２)に取り付けられた大径の空気用シリンダ(１２)から小径の液体用シリンダ(１４)を垂下したシリンダ部材(１０)と、
前記液体用シリンダ(１４)内を昇降可能な液体用ピストン(２２)からステム(Ｓ)を上方突出するとともに、このステム(Ｓ)の外側に、前記空気用シリンダ(１２)と摺接する空気用ピストン(３０)を相対的な上下動が可能に連係させ、かつ前記ステム(Ｓ)の上方に吐出口(５４)を有するノズルヘッド(Ｎ)が形成され、かつ上方へ付勢された作動部材(２０)と、
を具備し、前記作動部材(２０)の昇降により、前記液体用シリンダ(１４)内から第２液体用逆止弁(ＶＬ２)を介して圧送された液体と前記空気用シリンダ(１２)内から第２空気用逆止弁(ＶＡ２)を介して圧送された空気とを混合させ、発泡させて前記吐出口(５４)から吐出するとともに、第１液体用逆止弁(ＶＬ１)を介して容器体側から前記液体用シリンダ(１４)内へ液体を吸い込み、かつ、第１空気用逆止弁(ＶＡ１)を介して前記空気用シリンダ(１２)内へ外気を導入することが可能に設けた泡吐出器において、
前記空気用ピストン(３０)の上面から、前記内向きフランジ(６)のフランジ孔(６ａ)の縁部と前記ステム(Ｓ)の外周面の間を通って当該ステム(Ｓ)の外周面を覆うカバー筒部(３８)を起立しており、
前記空気用ピストン(３０)の内周端には、前記ステム(Ｓ)の外側に昇降可能に嵌合されたスライド筒部(３２)が付設されており、かつ、このスライド筒部(３２)の周囲に前記カバー筒部(３８)が周設されていることを特徴とする、泡吐出容器。 A mounting member (2) having an inward flange (6) protruding inward from the upper part of the mounting cylinder (4) that can be mounted on the mouth and neck of the container body.
A cylinder member (10) in which a small-diameter liquid cylinder (14) is hung from a large-diameter air cylinder (12) attached to the mounting member (2).
The stem (S) protrudes upward from the liquid piston (22) that can move up and down in the liquid cylinder (14), and for air that is in sliding contact with the air cylinder (12) on the outside of the stem (S). An actuating member in which the piston (30) is linked so as to be able to move relative up and down, and a nozzle head (N) having a discharge port (54) is formed above the stem (S) and is urged upward. (20) and
From the inside of the liquid cylinder (14) and the liquid pumped from the inside of the air cylinder (12) via the second liquid check valve (VL2) by raising and lowering the operating member (20). The air pumped through the second air check valve (VA2) is mixed, foamed and discharged from the discharge port (54), and the container is connected via the first liquid check valve (VL1). It is possible to suck the liquid into the liquid cylinder (14) from the body side and introduce outside air into the air cylinder (12) via the first air check valve (VA1). In the foam ejector
From the upper surface of the air piston (30), the outer peripheral surface of the stem (S) is passed between the edge of the flange hole (6a) of the inward flange (6) and the outer peripheral surface of the stem (S). The cover cylinder (38) that covers is upright.
At the inner peripheral end of the air piston (30), a slide cylinder portion (32) fitted to the outside of the stem (S) so as to be able to move up and down is attached, and the slide cylinder portion (32) is attached. A foam discharge container, characterized in that the cover cylinder portion (38) is provided around the circumference of the cover cylinder portion (38) . 前記ノズルヘッド(Ｎ)は前記ステム(Ｓ)より大外径に形成され、このノズルヘッド(Ｎ)の裏側まで前記カバー筒部(３８)を起立したことを特徴とする、請求項１に記載の泡吐出器。 The first aspect of the present invention, wherein the nozzle head (N) is formed to have a larger outer diameter than the stem (S), and the cover cylinder portion (38) is erected to the back side of the nozzle head (N). Foam ejector. 前記ステム(Ｓ)の外面を前記カバー筒部(３８)の内面に当接又は近接させるともに、このカバー筒部(３８)を前記フランジ孔(６ａ)の孔縁に対して摺動することが可能に形成したことを特徴とする、請求項１又は請求項２に記載の泡吐出器。 The outer surface of the stem (S) may be brought into contact with or close to the inner surface of the cover cylinder portion (38), and the cover cylinder portion (38) may be slid with respect to the hole edge of the flange hole (6a). The foam ejector according to claim 1 or 2, wherein the foam ejector is formed so as to be possible. 前記空気用ピストン(３０)は、前記スライド筒部(３２)から隔壁部(３４)を外方突出するとともに、この隔壁部(３４)の先端に前記空気用シリンダ(１２)の内面に摺接させた摺動壁部(４２)を付設してなり、
前記カバー筒部(３８)は、前記隔壁部(３４)の内周部から起立するとともに、少なくとも前記カバー筒部(３８)の内側の隔壁部分に吸気孔(３６)を開口しており、
かつ前記カバー筒部(３８)の長さを、前記作動部材(２０)の下限位置に置いて前記内向きフランジ(６)のフランジ孔(６ａ)から前記カバー筒部(３８)の先端部が脱落しない長さとしたことを特徴とする、請求項１から請求項３のいずれかに記載の泡吐出器。 The air piston (30) protrudes outward from the slide cylinder portion (32) and is slidably contacted with the tip of the partition portion (34) on the inner surface of the air cylinder (12). The sliding wall part (42) that was made to be attached is attached.
The cover cylinder portion (38) stands up from the inner peripheral portion of the partition wall portion (34) and has an intake hole (36) opened at least in the partition wall portion inside the cover cylinder portion (38).
Further, the length of the cover cylinder portion (38) is placed at the lower limit position of the actuating member (20), and the tip portion of the cover cylinder portion (38) is formed from the flange hole (6a) of the inward flange (6). The foam ejector according to any one of claims 1 to 3, wherein the foam has a length that does not fall off.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015227183A (en) 2014-05-30 2015-12-17 株式会社吉野工業所 Foam discharger

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JPH07315408A (en) * 1994-05-18 1995-12-05 Yoshino Kogyosho Co Ltd Foam release pump container
JP3215641B2 (en) * 1996-12-26 2001-10-09 株式会社吉野工業所 Foam squirt pump container
JP3209404B2 (en) * 1996-12-26 2001-09-17 株式会社吉野工業所 Foam spouting container

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015227183A (en) 2014-05-30 2015-12-17 株式会社吉野工業所 Foam discharger

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