JP2014028622A

JP2014028622A - Bubble discharger

Info

Publication number: JP2014028622A
Application number: JP2012169365A
Authority: JP
Inventors: Shigeo Iizuka; 茂雄飯塚; Hiroshi Mizushima; 水嶋　　博
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 2012-07-31
Filing date: 2012-07-31
Publication date: 2014-02-13

Abstract

PROBLEM TO BE SOLVED: To provide a bubble discharger that is free of a risk of separation and losing of a valve body of a discharge valve in spite of separation of a discharge head, excellent in assembly efficiency, and improved in productivity by simplifying the manufacture, and reduces costs, has a small risk of trouble in valve function, and hardly causes a liquid to enter.SOLUTION: An upper mount cylinder part 50 in which a bubbling member C5 is fitted is extended above a lower mount cylinder part 51 fitted to an outer periphery upper end part of a stem C2, a mount cylinder member C4 having an annular recessed part 56 defined is provided between a valve seat cylinder part 55 suspended from a lower surface outer peripheral edge part of a lower fitted cylinder part and an outer periphery of the stem, and a discharge head C6 is fitted to an outer periphery of the upper mount cylinder part in fitting strength smaller than the fitting strength of the lower mount cylinder part to the stem. An outside air intake valve V2 which is closed when an operation member C moves down and opened when the operation member moves up to link an air cylinder 20 to the outside is constituted with an upper end part of a cylindrical valve part 45 of an air piston C3 fitted to the outer periphery of the stem movably in vertical directions to a predetermined width and an inner peripheral surface of the valve seat cylinder part.

Description

本発明は泡吐出器に関し、詳しくは、吐出ヘッドが離脱した場合でもステム内の吐出弁を構成する弁体の離脱紛失の虞がなく、また、空気用シリンダ内への外気の導入を司る外気導入弁を簡便な構造で形成した泡吐出器に関する。 The present invention relates to a foam discharger, and more particularly, there is no risk of detachment and loss of a valve body constituting a discharge valve in a stem even when a discharge head is detached, and the outside air that controls the introduction of outside air into an air cylinder. The present invention relates to a foam dispenser in which an introduction valve is formed with a simple structure.

泡吐出器として、大径の空気用シリンダと小径の液用シリンダを上下に同心円状に連設したシリンダ部材と、液用シリンダ内を摺動する液用ピストンをステム外周下部より突設するとともに、空気用シリンダ内を摺動する空気用ピストンをステム外周上部に連携させ、ステム上端に吐出ヘッドを嵌着して上方付勢状態で上下動可能に装着した作動部材とを備え、作動部材の上下動により液用シリンダ内の液と空気用シリンダ内の空気を合流させて起泡部材を介して起泡させ、吐出ヘッドの吐出口より吐出する如く構成したものが知られている。（例えば、特許文献１参照） As a foam discharger, a cylinder member in which a large-diameter air cylinder and a small-diameter liquid cylinder are connected concentrically up and down, and a liquid piston sliding inside the liquid cylinder project from the lower part of the outer periphery of the stem. A pneumatic piston that slides in the pneumatic cylinder is linked to the upper part of the outer periphery of the stem, and an operating member mounted on the upper end of the stem so as to be movable up and down in an upward biased state. A configuration is known in which the liquid in the liquid cylinder and the air in the air cylinder are merged by vertical movement to be bubbled through a foaming member and discharged from the discharge port of the discharge head. (For example, see Patent Document 1)

特許文献１に記載されている泡吐出器では、ステム内上部に玉状の弁体を備えた吐出弁を設け、また、吐出ヘッドの縦筒をステム上端部外周に嵌着し、起泡部材はステム直上の縦筒内よりステム内上端部にわたり嵌着した筒部材内に嵌着固定している。起泡部材はメッシュを一端面に張設した一対の筒体を筒部材内に嵌着することで構成している。 In the foam discharge device described in Patent Document 1, a discharge valve provided with a ball-shaped valve body is provided in the upper portion of the stem, and the vertical cylinder of the discharge head is fitted to the outer periphery of the upper end portion of the stem, and the foaming member Is fitted and fixed in a cylindrical member fitted from the inside of the vertical cylinder directly above the stem to the upper end of the stem. The foaming member is configured by fitting a pair of cylinders with a mesh stretched on one end face into the cylinder member.

また、泡の吐出に伴って減少する空気用シリンダ内に外気を導入するための外気導入弁を備えているが、この外気導入弁は、空気用ピストンを構成する隔壁部分に弁口を開口し、この弁口を閉塞する弁体を、別部材で構成した弁部材を組み付けることで形成している。 In addition, an outside air introduction valve is provided for introducing outside air into the air cylinder that decreases as the foam is discharged. This outside air introduction valve opens a valve port in a partition wall portion constituting the air piston. The valve body that closes the valve port is formed by assembling a valve member constituted by a separate member.

特開２００９−２０２１２２号公報JP 2009-202122 A

従来のこの種の泡吐出器では、吐出ヘッドが簡単に離脱しないように、嵌合強度を大きくしてステムに対して吐出ヘッドの強固な嵌合を行なっているが、大きな衝撃等により吐出ヘッドが外れてしまう虞もあった。その場合従来のこの種の泡吐出器では、吐出ヘッドと筒部材、起泡部材がいっぺんに外れてしまい、それに伴ってステム内上部に設けた吐出弁の弁体が飛び出してしまう虞があった。飛び出した弁体は一般に小径であるため紛失の虞が大きくある。また、消費者が不用意に吐出ヘッドを外すという虞もあり、その場合にも吐出ヘッドの無理な引き抜きの衝撃で弁体が離脱紛失する虞があった。 In this type of conventional bubble ejector, the fitting strength is increased and the ejection head is firmly fitted to the stem so that the ejection head is not easily detached. There was also a risk of losing. In this case, in this type of conventional foam discharger, the discharge head, the cylindrical member, and the foaming member are all removed, and the valve body of the discharge valve provided in the upper part of the stem may be ejected. Since the protruding valve body is generally small in diameter, there is a high risk of loss. In addition, there is a possibility that the consumer inadvertently removes the ejection head, and in that case, the valve body may be detached and lost due to the impact of excessive ejection of the ejection head.

また、従来のこの種の泡吐出器では、外気導入弁として、上記別部材の弁部材を組み付けるため、その分の製造が煩雑となり、コスト面でも高騰する必然性があり、また、これら弁部材は小さく形成されているため、弁部材自体の不具合を生じる確率が高くなるという虞もある。 Further, in this type of conventional bubble discharger, the separate valve member is assembled as an outside air introduction valve, so that the manufacturing is complicated and the cost is inevitably increased. Since it is formed small, there is a possibility that the probability of causing a malfunction of the valve member itself is increased.

本発明は上記した点に鑑みてなされたもので、衝撃や悪戯により吐出ヘッドの離脱があった場合にもステム内上部の吐出弁の弁体が離脱紛失する虞がなく、しかも吐出弁体を予めステムにセットしておくこと（モジュール化）が可能で、組み付け効率も良好であり、また、別部材としての弁部材を用いずに外気導入弁を構成できるため、製造が簡素化されて生産性が向上し、また、コストの低減を図れるという特徴があり、また、外気導入弁を構成する部分を細密構造としていないため、弁機能の不具合を生じる虞が少なく、また、液体の浸入が非常に起こり難い泡吐出器を提案する。 The present invention has been made in view of the above points, and even when the discharge head is detached due to impact or mischief, there is no risk that the valve body of the discharge valve at the upper part in the stem will be detached and lost. It can be set in the stem in advance (modularized), the assembly efficiency is good, and the outside air introduction valve can be configured without using a valve member as a separate member. In addition, there is a feature that the efficiency is improved and the cost can be reduced, and since the portion constituting the outside air introduction valve is not a fine structure, there is little possibility of causing a malfunction of the valve function, and the infiltration of liquid is very We propose a foam dispenser that is difficult to occur.

第１の手段として、以下の通り構成した。即ち、容器体１００の口頸部１０１外周に嵌合させる装着キャップＡに上端部を固定して容器体１００内に垂下するとともに、大径の空気用シリンダ２０及び小径の液用シリンダ２１を上下に同心円状に連設してなるシリンダ部材Ｂと、液用シリンダ２１内を摺動する液用ピストンＣ１を、吐出弁Ｖ１を備えたステムＣ２外周下部より突設するとともに、空気用シリンダ２０内を摺動する空気用ピストンＣ３をステムＣ２外周上部に連携させ、ステムＣ２内と連通する吐出口７５を備えた吐出ヘッドＣ６を嵌着して上方付勢状態で上下動可能に装着した作動部材Ｃを備え、吐出弁Ｖ１は、ステムＣ２内上部に突設した吐出弁用の弁座３５に、別体の吐出弁体３６を載置して構成され、作動部材Ｃの上下動により液用シリンダ２１内の液と空気用シリンダ２０内の空気を合流させて起泡部材Ｃ５を介して起泡させ、吐出口７５より吐出する如く構成した泡吐出器であって、ステムＣ２の外周上端部に嵌着した下部装着筒部５１の上部に、内部に起泡部材Ｃ５を嵌合した上部装着筒部５０を延設し、下部嵌着筒部５１下面外周縁部より垂設した弁座用筒部５５とステムＣ２外周との間に環状凹部５６を画成した装着筒部材Ｃ４を設け、上部装着筒部５０の外周に、ステムＣ２に対する下部装着筒部５１の嵌合強度より小なる嵌合強度で、吐出ヘッドＣ６を嵌着し、空気用ピストンＣ３は、ステムＣ２外周に所定幅の上下動が可能に嵌合させた筒状弁部４５と、空気用シリンダ２０内周に摺動可能に嵌合させた摺動部４７とを、空気用シリンダ２０内上下を区画する隔壁４６で連結して構成し、空気用シリンダ２０内から、ステムＣ２と筒状弁部４５との間、環状凹部５６内を介してステムＣ２内に連通する空気通路ｐを形成し、筒状弁部４５の上端部と、弁座用筒部５５の内周面とで、作動部材Ｃの下降時に閉塞し、作動部材Ｃの上昇時に開弁して外部と空気用シリンダ２０内を連通する外気導入弁Ｖ２を構成した。 The first means is configured as follows. That is, the upper end is fixed to the mounting cap A to be fitted to the outer periphery of the mouth / neck portion 101 of the container body 100 and hangs down in the container body 100, and the large-diameter air cylinder 20 and the small-diameter liquid cylinder 21 are moved up and down. A cylinder member B concentrically connected to the liquid cylinder 21 and a liquid piston C1 that slides in the liquid cylinder 21 protrude from the lower part of the outer periphery of the stem C2 provided with the discharge valve V1, and in the air cylinder 20 An air piston C3 that slides on the outer periphery of the stem C2 is linked to the upper portion of the outer periphery of the stem C2, and a discharge head C6 having a discharge port 75 communicating with the inside of the stem C2 is fitted and is mounted so as to be vertically movable in an upward biased state. C, the discharge valve V1 is configured by placing a separate discharge valve body 36 on a discharge valve valve seat 35 projecting from the upper part in the stem C2, and by moving the operating member C up and down, Liquid and air in cylinder 21 A foam discharger configured to join the air in the cylinder 20 to foam through the foaming member C5 and to discharge from the discharge port 75, and is a lower mounting cylinder part fitted to the upper end of the outer periphery of the stem C2. An upper mounting cylinder portion 50 having a foaming member C5 fitted therein is extended to the upper portion of 51, and a cylinder portion 55 for a valve seat and an outer periphery of the stem C2 extending from the lower peripheral edge portion of the lower fitting cylinder portion 51 A mounting cylinder member C4 defining an annular recess 56 is provided between the discharge head C6 and the outer periphery of the upper mounting cylinder part 50 with a fitting strength smaller than the fitting strength of the lower mounting cylinder part 51 with respect to the stem C2. The air piston C3 is fitted and a cylindrical valve portion 45 fitted to the outer periphery of the stem C2 so as to be movable up and down with a predetermined width, and a slide slidably fitted to the inner periphery of the air cylinder 20 The portion 47 is connected by a partition wall 46 that divides the upper and lower sides of the air cylinder 20. An air passage p communicating from the air cylinder 20 to the stem C2 through the annular recess 56 between the stem C2 and the cylindrical valve portion 45 is formed, and the upper end portion of the cylindrical valve portion 45 is The outside air introduction valve V2 is closed with the inner peripheral surface of the valve seat cylinder portion 55 when the operating member C is lowered and is opened when the operating member C is raised to communicate with the outside and the air cylinder 20. .

第２の手段として、以下の通り構成した。即ち、前記第１の手段に於いて、隔壁４６の上面内周縁部に弁座用筒部５５の下端が当接する上部係止部４８を設け、ステムＣ２外周に筒状弁部４５の下端が当接する下部係止部３８を突設し、筒状弁部４５の下端が下部係止部３８に当接した状態で、筒状弁部４５とステムＣ２との間と、空気用シリンダ２０内との、通気が可能な通気手段を備え、上部係止部４８上に弁座用筒部５５の下端が当接する状態から、下部係止部３８上に筒状弁部４５の下端が当接する状態までの、筒状弁部４５のステムＣ２に対する相対的上下動が可能に構成した。 The second means is configured as follows. That is, in the first means, an upper locking portion 48 with which the lower end of the valve seat cylinder portion 55 abuts is provided on the inner peripheral edge of the upper surface of the partition wall 46, and the lower end of the cylindrical valve portion 45 is provided on the outer periphery of the stem C2. A lower locking portion 38 that abuts is protruded, and the lower end of the cylindrical valve portion 45 is in contact with the lower locking portion 38, and between the cylindrical valve portion 45 and the stem C 2 and in the air cylinder 20. The lower end of the tubular valve portion 45 abuts on the lower engaging portion 38 from the state where the lower end of the valve seat tubular portion 55 abuts on the upper engaging portion 48. Up to the state, the tubular valve portion 45 is configured to be movable up and down relative to the stem C2.

第３の手段として、以下の通り構成した。即ち、前記第２の手段に於いて、隔壁４６の上面内周縁部に、周方向複数突設した各支持突起４９の上面を、上部係止部４８として構成した。 The third means was configured as follows. That is, in the second means, the upper surface of each of the supporting protrusions 49 protruding in the circumferential direction on the inner peripheral edge of the upper surface of the partition wall 46 is configured as the upper locking portion 48.

第４の手段として、以下の通り構成した。即ち、前記第２の手段又は第３の手段に於いて、下部係止部３８として、ステムＣ２外周にフランジ状の係止凸部３９を突設し、前記通気手段として係止凸部３９の上面に放射状の複数の通気用凹溝４０を凹設した。 The fourth means is configured as follows. That is, in the second means or the third means, a flange-like locking projection 39 is provided on the outer periphery of the stem C2 as the lower locking portion 38, and the locking projection 39 is provided as the ventilation means. A plurality of radial grooves 40 for ventilation are provided on the upper surface.

第５の手段として、以下の通り構成した。即ち、前記第２の手段又は第３の手段に於いて、下部係止部３８として、ステムＣ２外周にフランジ状の係止凸部３９を突設し、前記通気手段として、筒状弁部４５の下端部に通気用切欠き４２を設けた。 The fifth means is configured as follows. That is, in the second means or the third means, a flange-like locking projection 39 is provided on the outer periphery of the stem C2 as the lower locking portion 38, and the tubular valve portion 45 is used as the ventilation means. The ventilation notch 42 was provided in the lower end part of this.

第６の手段として、以下の通り構成した。即ち、前記第１の手段乃至第５の手段に於いて、弁座用筒部５５の内周面上部を小径の外気導入弁用の弁座５９に形成するとともに、テーパ部６０を介して、内周面下部を大径部６１に形成し、筒状弁部４５のステムＣ２に対する最上昇状態で、筒状弁部４５の上端部が外気導入弁用の弁座５９に摺動可能に嵌合し、筒状弁部４５のステムＣ２に対する最下降状態で、筒状弁部４５の上端部が大径部６１位置に相対下降して外部と空気用シリンダ２０内とが連通する。 The sixth means is configured as follows. That is, in the first to fifth means, the upper part of the inner peripheral surface of the valve seat tube portion 55 is formed on the valve seat 59 for a small-diameter outside air introduction valve, and the taper portion 60 is interposed. The lower part of the inner peripheral surface is formed in the large-diameter portion 61, and the upper end portion of the cylindrical valve portion 45 is slidably fitted to the valve seat 59 for the outside air introduction valve in the highest rise state with respect to the stem C2 of the cylindrical valve portion 45. When the cylindrical valve portion 45 is in the lowest lowered state with respect to the stem C2, the upper end portion of the cylindrical valve portion 45 is relatively lowered to the position of the large diameter portion 61 so that the outside communicates with the inside of the air cylinder 20.

第７の手段として、以下の通り構成した。即ち、前記第６の手段に於いて、弁座用筒部５５の大径部６１に通気用窓６２を設けた。 The seventh means is configured as follows. That is, in the sixth means, the ventilation window 62 is provided in the large diameter portion 61 of the valve seat tube portion 55.

本発明によれば、ステムＣ２の外周上端部に嵌着した下部装着筒部５１の上部に、内部に起泡部材Ｃ５を嵌合した上部装着筒部５０を延設し、下部嵌着筒部５１下面外周縁部より垂設した弁座用筒部５５とステムＣ２外周との間に環状凹部５６を画成した装着筒部材Ｃ４を設け、上部装着筒部５０の外周に、ステムＣ２に対する下部装着筒部５１の嵌合強度より小なる嵌合強度で、吐出ヘッドＣ６を嵌着したので、万一衝撃等により吐出ヘッドＣ６が外れることがあっても、或いは悪戯等により吐出ヘッドＣ６が取り外されることがあっても、装着筒部材Ｃ４はステムＣ２上端部に止まり吐出ヘッドＣ６だけが取り外されることとなり、装着筒部材Ｃ４内の起泡部材Ｃ５も同様に止まるため、吐出弁Ｖ１の吐出弁体３６が露出することはなく，吐出ヘッドＣ６の離脱に伴って吐出弁体３６が飛び出してしまことがなく、吐出弁体３６の紛失の虞を防止できる。また、従来品と比較してもこの部分の部材数を増加することなく製造できる利点もある。 According to the present invention, the upper mounting cylinder part 50 having the foaming member C5 fitted therein is extended to the upper part of the lower mounting cylinder part 51 fitted to the upper end of the outer periphery of the stem C2. 51. A mounting cylinder member C4 defining an annular recess 56 is provided between the valve seat cylinder 55 suspended from the outer peripheral edge of the lower surface and the outer periphery of the stem C2, and a lower portion relative to the stem C2 is provided on the outer periphery of the upper mounting cylinder 50. Since the ejection head C6 is fitted with a fitting strength smaller than the fitting strength of the mounting cylinder portion 51, the ejection head C6 is removed due to mischief or the like even if the ejection head C6 may come off due to an impact or the like. The mounting cylinder member C4 stops at the upper end of the stem C2 and only the discharge head C6 is removed, and the foaming member C5 in the mounting cylinder member C4 also stops in the same manner. The body 36 is never exposed Without stripes jump out discharge valve body 36 with the withdrawal of the ejection head C6, it prevents the risk of loss of the discharge valve body 36. In addition, there is an advantage that it can be manufactured without increasing the number of members in this portion as compared with the conventional product.

また、空気用ピストンＣ３は、ステムＣ２外周に所定幅の上下動が可能に嵌合させた筒状弁部４５と、空気用シリンダ２０内周に摺動可能に嵌合させた摺動部４７とを、空気用シリンダ２０内上下を区画する隔壁４６で連結して構成し、空気用シリンダ２０内から、ステムＣ２と筒状弁部４５との間、環状凹部５６内を介してステムＣ２内に連通する空気通路ｐを形成し、筒状弁部４５の上端部と、弁座用筒部５５の内周面とで、作動部材Ｃの下降時に閉塞し、作動部材Ｃの上昇時に開弁して外部と空気用シリンダ２０内を連通する外気導入弁Ｖ２を構成したので、別部材としての弁部材を用いずに外気導入弁Ｖ２を構成できるため、製造が簡素化されて生産性が向上し、また、コストの低減を図れるという特徴がある。また、外気導入弁を構成する部分を細密構造としていないため、弁機能の不具合を生じる虞が少なく、また、その構成上液体の浸入が非常に起こり難いという特徴がある。しかも上記した吐出弁体３６の飛び出し防止と外気導入弁Ｖ２の上記作用効果を、特殊形態の装着筒部材Ｃ４を設け、それに伴う僅かな構造変化で発揮できるという特徴もある。 The air piston C3 includes a cylindrical valve portion 45 fitted to the outer periphery of the stem C2 so as to be movable up and down by a predetermined width, and a sliding portion 47 slidably fitted to the inner periphery of the air cylinder 20. Are connected by a partition wall 46 that divides the upper and lower sides in the air cylinder 20, and from the air cylinder 20, between the stem C 2 and the tubular valve portion 45, and inside the stem C 2 through the annular recess 56. An air passage p that communicates with the upper end of the tubular valve portion 45 and the inner peripheral surface of the valve seat tubular portion 55 are closed when the actuating member C is lowered and opened when the actuating member C is raised. Since the outside air introduction valve V2 that communicates between the outside and the inside of the air cylinder 20 is configured, the outside air introduction valve V2 can be configured without using a valve member as a separate member, so that the manufacturing is simplified and the productivity is improved. In addition, the cost can be reduced. In addition, since the portion constituting the outside air introduction valve is not a fine structure, there is little possibility of causing a malfunction of the valve function, and liquid intrusion hardly occurs due to its configuration. In addition, the above-described effects of the discharge valve body 36 and the outside air introduction valve V2 can be prevented by providing a specially-equipped mounting cylinder member C4 and with a slight structural change.

隔壁４６の上面内周縁部に弁座用筒部５５の下端が当接する上部係止部４８を設け、ステムＣ２外周に筒状弁部４５の下端が当接する下部係止部３８を突設し、筒状弁部４５の下端が下部係止部３８に当接した状態で、筒状弁部４５とステムＣ２との間と、空気用シリンダ２０内との、通気が可能な通気手段を備え、上部係止部４８上に弁座用筒部５５の下端が当接する状態から、下部係止部３８上に筒状弁部４５の下端が当接する状態までの、筒状弁部４５のステムＣ２に対する相対的上下動が可能に構成した場合には、筒状弁部４５のステムＣ２に対する相対上下動の際の最上昇位置での係止、最下降位置での係止を安定した状態で行なえるという特徴がある。 An upper locking portion 48 with which the lower end of the valve seat cylinder portion 55 abuts is provided on the inner peripheral edge of the upper surface of the partition wall 46, and a lower locking portion 38 with which the lower end of the tubular valve portion 45 abuts is provided on the outer periphery of the stem C2. A ventilation means is provided that allows ventilation between the tubular valve portion 45 and the stem C2 and in the air cylinder 20 with the lower end of the tubular valve portion 45 in contact with the lower locking portion 38. The stem of the tubular valve portion 45 from the state in which the lower end of the valve seat tubular portion 55 abuts on the upper engaging portion 48 to the state in which the lower end of the tubular valve portion 45 abuts on the lower engaging portion 38. In a case where relative vertical movement with respect to C2 is possible, the tubular valve portion 45 is stably locked at the highest position when the cylinder valve 45 is moved relative to the stem C2 and locked at the lowest position. There is a feature that can be done.

隔壁４６の上面内周縁部に、周方向複数突設した各支持突起４９の上面を、上部係止部４８として構成した場合には、弁座用筒部５５の長さの調整が容易で、空気用ピストンＣ３を押圧するための弁座用筒部５５の長さを短く構成できる特徴がある。 When the upper surface of each of the supporting protrusions 49 protruding in the circumferential direction on the inner peripheral edge of the partition wall 46 is configured as the upper locking portion 48, the length of the valve seat tube portion 55 can be easily adjusted, There exists the characteristic which can comprise the length of the cylinder part 55 for valve seats for pressing the piston C3 for air short.

下部係止部３８として、ステムＣ２外周にフランジ状の係止凸部３９を突設し、前記通気手段として係止凸部３９の上面に放射状の複数の通気用凹溝４０を凹設した場合には、安定した筒状弁部４５下端の係止を行なえるとともに、充分な通気性を得られるという特徴がある。 As a lower locking portion 38, a flange-shaped locking protrusion 39 is provided on the outer periphery of the stem C2, and a plurality of radial ventilation grooves 40 are provided on the upper surface of the locking protrusion 39 as the ventilation means. Is characterized in that a stable lower end of the tubular valve portion 45 can be locked and sufficient air permeability can be obtained.

下部係止部３８として、ステムＣ２外周にフランジ状の係止凸部３９を突設し、前記通気手段として、筒状弁部４５の下端部に通気用切欠き４２を設けた場合には、同様に安定した筒状弁部４５下端の係止を行なえるとともに、充分な通気性を得られる。 When the lower locking portion 38 is provided with a flange-shaped locking projection 39 on the outer periphery of the stem C2, and the ventilation means is provided with a ventilation notch 42 at the lower end of the tubular valve portion 45, Similarly, the lower end of the stable cylindrical valve portion 45 can be locked and sufficient air permeability can be obtained.

弁座用筒部５５の内周面上部を小径の外気導入弁用の弁座５９に形成するとともに、テーパ部６０を介して、内周面下部を大径部６１に形成し、筒状弁部４５のステムＣ２に対する最上昇状態で、筒状弁部４５の上端部が外気導入弁用の弁座５９に摺動可能に嵌合し、筒状弁部４５のステムＣ２に対する最下降状態で、筒状弁部４５の上端部が大径部６１位置に相対下降して外部と空気用シリンダ２０内とが連通する場合には、外気導入弁Ｖ２の開閉をより円滑に行なえるという特徴がある。 The upper part of the inner peripheral surface of the cylinder part 55 for the valve seat is formed in the valve seat 59 for a small-diameter outside air introduction valve, and the lower part of the inner peripheral surface is formed in the large-diameter part 61 via the taper part 60 to form a cylindrical valve. The upper end portion of the tubular valve portion 45 is slidably fitted to the valve seat 59 for the outside air introduction valve in the most elevated state with respect to the stem C2 of the portion 45, and in the lowest lowered state with respect to the stem C2 of the tubular valve portion 45. When the upper end portion of the cylindrical valve portion 45 is relatively lowered to the position of the large diameter portion 61 and the outside communicates with the inside of the air cylinder 20, the outside air introduction valve V2 can be opened and closed more smoothly. is there.

弁座用筒部５５の大径部６１に通気用窓６２を設けた場合には、外気導入弁Ｖ２の開放時に於ける外気の環状凹部５６内へ導入をより円滑に行なえるという特徴がある。 When the ventilation window 62 is provided in the large-diameter portion 61 of the valve seat cylinder 55, there is a feature that the outside air can be smoothly introduced into the annular recess 56 when the outside air introduction valve V2 is opened. .

泡吐出器の縦断面図である。（第１実施例）It is a longitudinal cross-sectional view of a foam discharger. (First embodiment) 図１の二点鎖線ｗで囲まれた部分の要部拡大断面図である。（第１実施例）It is a principal part expanded sectional view of the part enclosed by the dashed-two dotted line w of FIG. (First embodiment) 図２の状態から空気用ピストンに対してステムを相対下降させた状態の要部縦断面図である。（第１実施例）FIG. 3 is a longitudinal sectional view of a main part in a state where the stem is lowered relative to the air piston from the state of FIG. 2. (First embodiment) 図１の二点鎖線ｘで囲まれた部分の要部拡大断面図である。（第１実施例）It is a principal part expanded sectional view of the part enclosed by the dashed-two dotted line x of FIG. (First embodiment) 泡吐出器の縦断面図である。（第２実施例）It is a longitudinal cross-sectional view of a foam discharger. (Second embodiment) 図５の二点鎖線ｙで囲まれた部分の要部拡大断面図である。（第２実施例）It is a principal part expanded sectional view of the part enclosed by the dashed-two dotted line y of FIG. (Second embodiment) 図６の状態から空気用ピストンに対してステムを相対下降させた状態の要部縦断面図である。（第２実施例）FIG. 7 is a longitudinal sectional view of a main part in a state where the stem is lowered relative to the air piston from the state of FIG. 6. (Second embodiment) 図５の二点鎖線ｚで囲まれた部分の要部拡大断面図である。（第２実施例）It is a principal part expanded sectional view of the part enclosed by the dashed-two dotted line z of FIG. (Second embodiment)

以下、本発明の形態を図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１乃至図４は本発明の泡吐出器の第１実施例を示す。泡吐出器１は、装着キャップＡと、シリンダ部材Ｂと、作動部材Ｃと、ポペット弁体Ｄと、を備えている。 1 to 4 show a first embodiment of the foam dispenser of the present invention. The foam discharger 1 includes a mounting cap A, a cylinder member B, an operating member C, and a poppet valve body D.

装着キャップＡは、泡吐出器１を容器体１００に固定するためのもので、容器体１００の口頸部１０１外周に嵌合させる周壁１０の上端縁よりフランジ状の頂壁１１を延設し、頂壁１１中央部に開口した窓孔縁部に、ガイド筒１２を起立している。ガイド筒１２の下端は頂壁１１より下方へ僅かに突出している。 The mounting cap A is for fixing the foam discharger 1 to the container body 100, and a flange-like top wall 11 is extended from the upper end edge of the peripheral wall 10 to be fitted to the outer periphery of the mouth neck portion 101 of the container body 100. The guide tube 12 is erected at the edge of the window hole opened at the center of the top wall 11. The lower end of the guide tube 12 slightly protrudes downward from the top wall 11.

シリンダ部材Ｂは、上端部を装着キャップＡ裏面外周部に装着固定させた大径の空気用シリンダ２０の下部に、小径の液用シリンダ２１を同心円状に延設している。液用シリンダ２１は、空気用シリンダ２０の底壁部内周縁に周壁部の上端縁を連結して下方へ垂設し、周壁部の下端縁より中央を開口したテーパ状の底壁部を延設し、底壁部の上面を吸込み弁用の弁座２２として構成している。また、底壁部の中央開口縁よりパイプ嵌合筒２３を一体に垂設し、パイプ嵌合筒２３に吸上げ用のパイプ２４の上端を嵌着し、その下端を容器体１００内下端部に垂下させている。更に、液用シリンダ２１内面の底壁部外縁部から周壁部下端部に至る部分に、周方向複数の係止リブ２５を突設している。各係止リブ２５の上下中間部には上向き段部を設けている。また、空気用シリンダ２０の内周上部には、後述する空気用ピストンＣ３を係止する環状の係止突条２６を突設している。 The cylinder member B has a small-diameter liquid cylinder 21 concentrically extending below a large-diameter air cylinder 20 whose upper end is fixedly attached to the outer periphery of the back surface of the mounting cap A. The liquid cylinder 21 is connected to the inner peripheral edge of the bottom wall portion of the air cylinder 20 with the upper edge of the peripheral wall portion hanging downward, and extends from the lower end edge of the peripheral wall portion to a tapered bottom wall portion that opens at the center. The upper surface of the bottom wall portion is configured as a valve seat 22 for the suction valve. Further, the pipe fitting cylinder 23 is integrally suspended from the central opening edge of the bottom wall portion, and the upper end of the suction pipe 24 is fitted into the pipe fitting cylinder 23, and the lower end thereof is the lower end portion in the container body 100. Is hanging down. Further, a plurality of locking ribs 25 in the circumferential direction are projected from the bottom wall portion outer edge portion of the liquid cylinder 21 to the lower end portion of the peripheral wall portion. An upward stepped portion is provided at an upper and lower intermediate portion of each locking rib 25. Further, an annular locking ridge 26 that locks an air piston C 3 described later is provided on the inner peripheral upper portion of the air cylinder 20.

作動部材Ｃは、シリンダ部材Ｂに対して上方付勢状態で上下動可能に組み付けしたもので、液用ピストンＣ１と、ステムＣ２と、空気用ピストンＣ３と、装着筒部材Ｃ４と、起泡部材Ｃ５と、吐出ヘッドＣ６とを備えている。 The actuating member C is assembled so as to be vertically movable with respect to the cylinder member B in an upwardly biased state. The actuating member C is a liquid piston C1, a stem C2, an air piston C3, a mounting cylinder member C4, and a foaming member. C5 and a discharge head C6 are provided.

液用ピストンＣ１は、ステムＣ２内下部に嵌着した嵌合筒部３０の下端外周より外方へ上下スカート状の摺動部３１を突設し、摺動部３１を液用シリンダ２１内周に液密摺動可能に嵌合させている。また、嵌合筒部３０の上端部はステムＣ２内の上下方向中間部に於いて突条形態の逆止弁用の弁座３２を形成している。そして、液用ピストンＣ１の嵌合筒部３０下面と各係止リブ２５の上向き段部との間にコイルスプリングｓを介在させて作動部材Ｃを常時上方へ付勢させている。 The liquid piston C1 has an upper and lower skirt-shaped sliding portion 31 projecting outward from the outer periphery of the lower end of the fitting cylinder portion 30 fitted to the lower portion of the stem C2, and the sliding portion 31 is connected to the inner periphery of the liquid cylinder 21. Are fitted in a liquid-tight slidable manner. Further, the upper end portion of the fitting cylinder portion 30 forms a valve seat 32 for a check valve in the form of a ridge at an intermediate portion in the vertical direction in the stem C2. A coil spring s is interposed between the lower surface of the fitting cylinder portion 30 of the liquid piston C1 and the upward step portion of each locking rib 25 to constantly urge the operating member C upward.

ステムＣ２は、上下端を開口した筒状をなし、液用シリンダ２１に摺動する液用ピストンＣ１を下部外周に突設するとともに、空気用シリンダ２０内を摺動する空気用ピストンＣ３を外周上部に連携させて、液用シリンダ２１内及び空気用シリンダ２０内を上下動可能に装着されている。ステムＣ２内上部には吐出弁用の弁座３５を形成し、該弁座上に載置された別体の玉状の吐出弁体３６とで吐出弁Ｖ１を形成している。また、吐出弁用の弁座３５の下面から逆止弁用の弁座３２の直上までの間に周方向複数の縦突条３７を突設している。更に、外面上下方向中間部には、空気用ピストンＣ３の下降を制限係止する下部係止部３８を突設している。第１実施例に於ける下部係止部３８は、フランジ状の係止凸部３９として構成している。また、本発明では、空気用ピストンＣ３の後述する筒状弁部４５の下端が下部係止部３８に当接した状態で、筒状弁部４５とステムＣ２との間と、空気用シリンダ２０内との、通気が可能な通気手段を備えているが、第１実施例では、該通気手段として係止凸部３９の上面に凹設した放射状の複数の通気用凹溝４０を採用している。また、係止凸部３９の上方の筒壁外周には周方向複数の縦突条４１を突設している。尚、本発明に於ける吐出弁Ｖ１は、ステムＣ２内上部に突設した吐出弁用の弁座３５に、別体の吐出弁体３６を載置して構成されたものが対象となり、吐出弁体３６は一般的な玉状をなすものであっても、例えば紡錘形状等の他の形状であっても良く、上記した構成を備えていれば良い。 The stem C2 has a cylindrical shape with open upper and lower ends, and a liquid piston C1 that slides on the liquid cylinder 21 protrudes from the outer periphery of the lower portion, and an air piston C3 that slides in the air cylinder 20 has an outer periphery. In cooperation with the upper part, the liquid cylinder 21 and the air cylinder 20 are mounted so as to move up and down. A valve seat 35 for a discharge valve is formed in the upper part of the stem C2, and a discharge valve V1 is formed with a separate ball-shaped discharge valve body 36 placed on the valve seat. A plurality of vertical ridges 37 in the circumferential direction project from the lower surface of the valve seat 35 for the discharge valve to directly above the valve seat 32 for the check valve. Further, a lower locking portion 38 that projects and restricts the lowering of the air piston C3 protrudes from the middle portion of the outer surface in the vertical direction. The lower locking portion 38 in the first embodiment is configured as a flange-shaped locking projection 39. Further, in the present invention, with the lower end of a later-described tubular valve portion 45 of the air piston C3 in contact with the lower locking portion 38, between the tubular valve portion 45 and the stem C2, and the air cylinder 20 In the first embodiment, a plurality of radial vent grooves 40 provided on the upper surface of the locking projection 39 are used as the vent means. Yes. A plurality of circumferential ridges 41 project in the circumferential direction on the outer periphery of the cylindrical wall above the locking projection 39. The discharge valve V1 according to the present invention is intended to be constructed by placing a separate discharge valve body 36 on a discharge valve valve seat 35 protruding from the upper part of the stem C2. The valve body 36 may have a general ball shape, or may have another shape such as a spindle shape, and may have the above-described configuration.

空気用ピストンＣ３は、内周縁の筒状弁部４５をステムＣ２外周に小幅の上下動が可能に嵌合させ、筒状弁部４５外周より延設した階段状の隔壁４６を介して、空気用シリンダ２０内周に液密摺動可能に嵌合した上下スカート状の摺動部４７延設している。第１実施例に於いて筒状弁部４５は、ステムＣ２外周の縦突条４１外面に上下動可能に嵌合させている。また、隔壁４６の上面内周縁部に、後述する弁座用筒部５５の下端が当接する上部係止部４８を設けている。第１実施例では、隔壁４６上面内周縁部に周方向複数突設した支持突起４９の上面を、上部係止部４８として採用している。 The air piston C3 has an inner peripheral cylindrical valve portion 45 fitted to the outer periphery of the stem C2 so as to be able to move up and down with a small width, and the air piston C3 has a stepped partition wall 46 extending from the outer periphery of the cylindrical valve portion 45. An upper and lower skirt-shaped sliding portion 47 is fitted to the inner circumference of the cylinder 20 for fluid-tight sliding. In the first embodiment, the tubular valve portion 45 is fitted to the outer surface of the vertical protrusion 41 on the outer periphery of the stem C2 so as to be movable up and down. Further, an upper locking portion 48 with which a lower end of a later-described valve seat cylinder portion 55 abuts is provided on the inner peripheral edge of the upper surface of the partition wall 46. In the first embodiment, the upper surface of the support protrusion 49 that protrudes in the circumferential direction on the inner peripheral edge of the upper surface of the partition wall 46 is employed as the upper locking portion 48.

装着筒部材Ｃ４は、ステムＣ２上に位置する上部装着筒部５０内に起泡部材Ｃ５を嵌合し、上部装着筒部５０下方に連設した下部装着筒部５１をステムＣ２外周上端部に装着してステムＣ２に装着しており、装着筒部材Ｃ４を介して吐出ヘッドＣ６を嵌着している。 The mounting cylinder member C4 has a foam mounting member C5 fitted in an upper mounting cylinder part 50 located on the stem C2, and a lower mounting cylinder part 51 provided continuously below the upper mounting cylinder part 50 at the upper end of the outer periphery of the stem C2. It is attached to the stem C2, and the ejection head C6 is fitted via the mounting cylinder member C4.

第１実施例では、ステムＣ２外周上端部に嵌着した下部装着筒部５１の上端にフランジ５２を介して上部装着筒部５０を起立し、また、上部装着筒部５０の内周下部には、中央に連通窓を開口して延設したフランジ状の底板５３を備え、底板５３の下面に周方向複数の弁抑え板５４を垂設している。更に、下部装着筒部５１の下面外周縁より弁座用筒部５５を垂設し、弁座用筒部５５とステムＣ２外周との間に環状凹部５６を画成している。また、環状凹部５６直上の下部装着筒部５１内面には、下端を環状凹部５６の上端に開口し、上端をステムＣ２直上に開口した縦凹溝５７を縦設している。そして、この縦凹溝５７内、環状凹部５６内、ステムＣ２と筒状弁部４５との間とで、空気用シリンダ２０内からステムＣ２内に連通する空気通路ｐを構成している。また、フランジ５２の下面には隙間用リブ５８を突設しており、隙間用リブ５８を対応するステムＣ２の上面に当接し、フランジ５２とステムＣ２上面との間に、ステムＣ２上方の下部装着筒部５１内面に開口した空気通路ｐからステムＣ２内に連通する通気路を設けて装着している。そして、空気通路ｐと、液流路が合流する気液混合室ＲをステムＣ２内に画成している。 In the first embodiment, the upper mounting cylinder portion 50 is erected on the upper end of the lower mounting cylinder portion 51 fitted to the upper end portion of the outer periphery of the stem C2 via the flange 52, and In addition, a flange-shaped bottom plate 53 is provided at the center and has a communication window opened, and a plurality of valve restraining plates 54 in the circumferential direction are suspended from the lower surface of the bottom plate 53. Further, a valve seat cylinder 55 is suspended from the outer peripheral edge of the lower surface of the lower mounting cylinder 51, and an annular recess 56 is defined between the valve seat cylinder 55 and the stem C2 outer periphery. Further, on the inner surface of the lower mounting cylinder portion 51 immediately above the annular recess 56, a vertically concave groove 57 having a lower end opened at the upper end of the annular recess 56 and an upper end opened directly above the stem C2 is provided vertically. An air passage p that communicates from the air cylinder 20 into the stem C2 is formed in the longitudinal groove 57, the annular recess 56, and between the stem C2 and the tubular valve portion 45. Further, a gap rib 58 projects from the lower surface of the flange 52. The gap rib 58 contacts the upper surface of the corresponding stem C2, and a lower portion above the stem C2 is interposed between the flange 52 and the upper surface of the stem C2. An air passage that communicates with the inside of the stem C2 from the air passage p opened on the inner surface of the mounting cylinder 51 is provided. A gas-liquid mixing chamber R in which the air passage p and the liquid flow path merge is defined in the stem C2.

起泡部材Ｃ５は、メッシュ６５を張設した筒体６６を一対用意して、メッシュ６５が上端及び下端になる如く装着筒部材Ｃ４の上部装着筒部５０内に嵌着している。尚、第１実施例では筒体を一対設けているが、メッシュを張設した筒体を一つ嵌着することも、三個以上嵌着することも可能であり、適宜選択することが可能である。 As the foaming member C5, a pair of cylindrical bodies 66 each having a mesh 65 stretched are prepared, and are fitted into the upper mounting cylinder portion 50 of the mounting cylinder member C4 so that the mesh 65 becomes the upper end and the lower end. Although a pair of cylinders are provided in the first embodiment, it is possible to fit one cylinder with a mesh stretched, or three or more cylinders, which can be selected as appropriate. It is.

吐出ヘッドＣ６は上部装着筒部５０の外周に内周下端部を嵌合させた縦筒７０を頂板７１裏面より垂設し、頂板７１の周縁部から外周壁７２を垂設し、外周壁７２内方の頂板７１裏面より垂設した内周壁７３の下端部をガイド筒１２の外周上端部位置に垂下している。また、縦筒７０の上端に基端を開口し、内周壁７３及び外周壁７２を貫通して前方へ突設したノズル７４を延設し、その先端に吐出口７５を開口している。また、縦筒７０内の上部にはリブ７６を突設している。本発明では、上部装着筒部５０の外周に、ステムＣ２に対する下部装着筒部５１の嵌合強度より小なる嵌合強度で、吐出ヘッドＣ６を嵌着している。換言すれば、ステムＣ２に対する下部装着筒部５１の嵌合強度が、上部装着筒部５０に対する吐出ヘッドＣ６の嵌合強度より大として構成している。そのため、吐出ヘッドＣ６が外れる際には、装着筒部材Ｃ５から外れ、装着筒部材Ｃ５と吐出ヘッドＣ６とが一緒に外れる虞は極めてすくない。ここでいう嵌合強度とは、単純に嵌合する両者の結び付きの強さを示している。本発明に於ける嵌合強度の大きさの差は、例えば、嵌合部分の面積、嵌合部分の相互の径等を考慮選択して上記嵌合強度の大きさを特定すれば良い。 In the discharge head C6, a vertical cylinder 70 in which the lower end of the inner periphery is fitted to the outer periphery of the upper mounting cylinder 50 is suspended from the back surface of the top plate 71, and the outer peripheral wall 72 is suspended from the peripheral portion of the top plate 71. The lower end portion of the inner peripheral wall 73 suspended from the back surface of the inner top plate 71 is suspended at the position of the outer peripheral upper end portion of the guide tube 12. Further, a base end is opened at the upper end of the vertical cylinder 70, a nozzle 74 projecting forward through the inner peripheral wall 73 and the outer peripheral wall 72 is extended, and a discharge port 75 is opened at the distal end thereof. Further, a rib 76 projects from the upper part of the vertical cylinder 70. In the present invention, the discharge head C6 is fitted on the outer periphery of the upper mounting cylinder portion 50 with a fitting strength smaller than the fitting strength of the lower mounting cylinder portion 51 with respect to the stem C2. In other words, the fitting strength of the lower mounting cylinder portion 51 with respect to the stem C2 is configured to be greater than the fitting strength of the ejection head C6 with respect to the upper mounting cylinder portion 50. For this reason, when the ejection head C6 is detached, it is very unlikely that the ejection cylinder C5 and the ejection head C6 are detached together because the ejection cylinder C6 is detached from the installation cylinder member C5. The fitting strength here indicates the strength of the connection between the two fittings. The difference in the magnitude of the fitting strength in the present invention may be selected in consideration of the area of the fitting portion, the mutual diameter of the fitting portion, and the like, for example.

上記空気用ピストンＣ３は、上部係止部４８上に弁座用筒部５５の下端が当接する状態から、下部係止部３８上に筒状弁部４５の下端が当接する状態までの、筒状弁部４５のステムＣ２に対する相対的上下動が可能に構成している。第１実施例では、上部係止部４８である隔壁４６上の各支持突起４９上面に、弁座用筒部５５下面が当接した状態から、下部係止部３８である係止凸部３９の上面に、筒状弁部４５の下端が当接した状態までの間を、ステムＣ２に対して相対的な上下動が可能に空気用ピストンＣ３を装着している。そして、ステムＣ２と筒状弁部４５との間に、空気用シリンダ２０内から環状凹部５６内に連通し、空気用シリンダ２０内からステムＣ２内へ連通する空気通路ｐを構成する通気路を備えている。 The air piston C3 is a cylinder from the state in which the lower end of the valve seat tube portion 55 contacts the upper locking portion 48 to the state in which the lower end of the tubular valve portion 45 contacts the lower locking portion 38. The vertical valve portion 45 can be moved up and down relative to the stem C2. In the first embodiment, from the state in which the lower surface of the valve seat tube portion 55 is in contact with the upper surface of each support projection 49 on the partition wall 46 that is the upper locking portion 48, the locking convex portion 39 that is the lower locking portion 38. The piston C3 for air is attached so that the vertical movement relative to the stem C2 can be performed until the lower end of the cylindrical valve portion 45 is in contact with the upper surface of the tube. An air passage that constitutes an air passage p that communicates from the air cylinder 20 to the annular recess 56 and communicates from the air cylinder 20 to the stem C2 is provided between the stem C2 and the tubular valve portion 45. I have.

本発明では、筒状弁部４５の上端部と、弁座用筒部５５の内周面とで、作動部材Ｃの下降時に閉塞し、作動部材Ｃの上昇時に開弁して外部と空気用シリンダ２０内を連通する外気導入弁Ｖ２を構成している。第１実施例では、弁座用筒部５５の内周面上部を小径の外気導入弁用の弁座５９に形成するとともに、テーパ部６０を介して、内周面下部を大径部６１に形成し、筒状弁部４５のステムＣ２に対する最上昇状態で、筒状弁部４５の上端部が外気導入弁用の弁座５９に摺動可能に嵌合し、筒状弁部４５のステムＣ２に対する最下降状態で、筒状弁部４５の上端部が大径部６１位置に相対下降して外部と空気用シリンダ２０内とが連通する如く構成している。従って、外気導入弁Ｖ２は、下降した作動部材Ｃが上昇する際に負圧となった空気用シリンダ２０内に外気を導入する。 In the present invention, the upper end portion of the tubular valve portion 45 and the inner peripheral surface of the valve seat tubular portion 55 are closed when the operating member C is lowered, and are opened when the operating member C is raised to open the outside and the air. An outside air introduction valve V2 communicating with the inside of the cylinder 20 is configured. In the first embodiment, the upper portion of the inner peripheral surface of the valve seat tube portion 55 is formed in the valve seat 59 for the small-diameter outside air introduction valve, and the lower portion of the inner peripheral surface is formed into the large diameter portion 61 via the taper portion 60. The upper end portion of the tubular valve portion 45 is slidably fitted to the valve seat 59 for the outside air introduction valve in the state where the tubular valve portion 45 is raised to the stem C2, and the stem of the tubular valve portion 45 is formed. The upper end portion of the cylindrical valve portion 45 is relatively lowered to the position of the large diameter portion 61 in the lowest lowered state with respect to C2, so that the outside communicates with the inside of the air cylinder 20. Therefore, the outside air introduction valve V2 introduces outside air into the air cylinder 20 that has become negative pressure when the lowered operating member C rises.

ポペット弁体Ｄは、下端部外面に、それぞれ液用シリンダ２１の係止リブ２５間に位置させる、周方向複数の係止突部８０を突設しており、液用シリンダ２１内からステムＣ２内下部に至る長さを有しており、吸込み弁用の弁座２２と下面が当接する位置から、各係止突部８０がコイルスプリングｓ下面に当接する位置までの上下動が可能に装着している。各係止突部８０上方は、下部を大径部に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逆止弁体８１を形成し、この逆止弁体８１と逆止弁用の弁座３２とで逆止弁Ｖ３を形成している。また、ポペット弁体Ｄの下端部と吸込み弁用の弁座２２とで吸込み弁Ｖ４を構成している。 The poppet valve body D is provided with a plurality of circumferentially extending locking projections 80 positioned between the locking ribs 25 of the liquid cylinder 21 on the outer surface of the lower end portion, and the stem C2 from the liquid cylinder 21 inside. It has a length that extends to the inner and lower parts, and is mounted so that it can move up and down from the position where the valve seat 22 for suction valve and the lower surface abut to the position where each locking projection 80 contacts the lower surface of the coil spring s. doing. The upper part of each locking projection 80 is formed with a lower portion as a large diameter portion and an upper portion as a small diameter portion, and a check valve body 81 that expands into a tapered cylindrical shape is formed at the upper end of the small diameter portion. The valve body 81 and the check valve seat 32 form a check valve V3. The lower end portion of the poppet valve body D and the valve seat 22 for the suction valve constitute a suction valve V4.

尚、図１に二点鎖線で示す如き、スペーサーＥを着脱可能に装着することも可能である。スペーサーＥの存在で、不用意な作動部材Ｃの押し下げを防止することができる。 In addition, it is also possible to attach the spacer E so that attachment or detachment is possible as shown by a two-dot chain line in FIG. The presence of the spacer E can prevent the actuating member C from being pressed inadvertently.

上記泡吐出器１は、図１の状態から吐出ヘッドＣ６を押し下げると、空気用ピストンＣ３がステムＣ２に対して相対的に上昇して外気導入弁Ｖ２が閉じる。図１に於ける外気導入弁Ｖ２は、図２の拡大図でより明らかな如く、当初筒状弁部４５の上端部は弁座用筒部５５の大径部６１に位置し、外気導入弁Ｖ２が開いた状態にあるが、吐出ヘッドＣ６を押し下げると、空気用ピストンＣ３が止まった状態でステムＣ２及び吐出ヘッドＣ６が下降し、筒状弁部４５がステムＣ２に対し相対的に上昇して、図３に拡大図で示す如く、その先端部がテーパ部６０を介して外気導入弁用の弁座５９内面に摺動可能に嵌合し、外気導入弁Ｖ２が閉塞する。外気導入弁Ｖ２が閉塞された空気用シリンダ２０は、上部係止部４８に当接する弁座用筒部５５により押し下げられる。 When the foam discharger 1 pushes down the discharge head C6 from the state shown in FIG. 1, the air piston C3 rises relative to the stem C2 and the outside air introduction valve V2 closes. As is clear from the enlarged view of FIG. 2, the outside air introduction valve V2 in FIG. 1 is initially located at the large diameter portion 61 of the valve seat cylinder portion 55 at the upper end portion of the tubular valve portion 45. Although V2 is in an open state, when the discharge head C6 is pushed down, the stem C2 and the discharge head C6 are lowered while the piston for air C3 is stopped, and the cylindrical valve portion 45 is raised relative to the stem C2. Then, as shown in an enlarged view in FIG. 3, the front end portion of the front end portion is slidably fitted to the inner surface of the valve seat 59 for the outside air introduction valve via the taper portion 60, and the outside air introduction valve V2 is closed. The air cylinder 20 with the outside air introduction valve V 2 closed is pushed down by the valve seat cylinder portion 55 that abuts the upper locking portion 48.

また、下降する空気用ピストンＣ３により空気用シリンダ２０内の空気が加圧されて空気通路ｐを介して気液混合室Ｒ内に導入される。一方、液用シリンダ２１が下降してポペット弁体Ｄを吸込み弁用の弁座２２に当接させるまで下降させるとともに、ポペット弁体ＤがステムＣ２に対して相対的に上昇して逆止弁Ｖ３が開き、液用シリンダ２１内の加圧液を吐出弁Ｖ１を介して気液混合室Ｒに導入させ、ここで気液を混合する。気液混合室Ｒで混合された気液は起泡部材Ｃ５を通過して発泡し、吐出ヘッドＣ６のノズル７４の吐出口７５から外部へ吐出される。 Further, the air in the air cylinder 20 is pressurized by the descending air piston C3 and is introduced into the gas-liquid mixing chamber R through the air passage p. On the other hand, the liquid cylinder 21 is lowered and lowered until the poppet valve body D is brought into contact with the valve seat 22 for the suction valve, and the poppet valve body D is relatively lifted with respect to the stem C2 to check valve. V3 opens, and the pressurized liquid in the liquid cylinder 21 is introduced into the gas-liquid mixing chamber R through the discharge valve V1, where the gas-liquid is mixed. The gas-liquid mixed in the gas-liquid mixing chamber R passes through the foaming member C5 and foams, and is discharged to the outside from the discharge port 75 of the nozzle 74 of the discharge head C6.

吐出ヘッドＣ６の押圧を解除すると、コイルスプリングｓの付勢力により作動部材Ｃが上昇し、その際空気用ピストンＣ３がステムＣ２に対して相対的に下降して外気導入弁Ｖ２が開き、空気用シリンダ２０内の負圧化によって外気が空気用シリンダ２０内に導入される。作動部材Ｃの最下降位置に於ける筒状弁部４５は図３と同様の外気導入弁用の弁座５９内面に摺動可能に嵌合しているが、作動部材Ｃの上昇により空気用ピストンＣ３が止まった状態でステムＣ２及び吐出ヘッドＣ６が上昇し、筒状弁部４５がステムＣ２に対して相対的に下降して、その先端部が図２と同様の大径部６１に位置し、外気導入弁Ｖ２が開放され、矢印で示す如く外気が外気導入弁Ｖ２を介して、ステムＣ２と筒状弁部４５との間、通気用凹溝４０を介して空気用シリンダ２０内に導入される。外気導入弁Ｖ２が開放された空気用シリンダ２０は下部係止部３８により押し上げられる。 When the pressure of the discharge head C6 is released, the actuating member C is raised by the biasing force of the coil spring s. At this time, the air piston C3 is lowered relative to the stem C2, and the outside air introduction valve V2 is opened. The outside air is introduced into the air cylinder 20 by the negative pressure in the cylinder 20. The cylindrical valve portion 45 at the lowermost position of the operating member C is slidably fitted to the inner surface of a valve seat 59 for an outside air introduction valve similar to that shown in FIG. With the piston C3 stopped, the stem C2 and the discharge head C6 are raised, the tubular valve portion 45 is lowered relative to the stem C2, and the tip thereof is positioned at the large diameter portion 61 similar to FIG. Then, the outside air introduction valve V2 is opened, and outside air enters the air cylinder 20 through the outside air introduction valve V2, between the stem C2 and the tubular valve portion 45, and through the ventilation concave groove 40 as indicated by an arrow. be introduced. The air cylinder 20 with the outside air introduction valve V2 opened is pushed up by the lower locking portion 38.

一方、ステムＣ２の上昇によりポペット弁体Ｄは、逆止弁Ｖ３と各縦突条３７との摩擦力で上昇し、吸込み弁Ｖ４が開いて負圧化した液用シリンダ２１内に容器体１００内の液が導入され、その際吐出弁Ｖ１は閉じる。ポペット弁体Ｄはその係止突部８０がコイルスプリングｓの下面に当接するまで上昇するが、その後はステムＣ２に対して、逆止弁体８１が逆止弁用の弁座３２に当接するまで、相対的に下降する。 On the other hand, the poppet valve body D rises due to the frictional force between the check valve V3 and each vertical protrusion 37 due to the rise of the stem C2, and the container body 100 is placed in the liquid cylinder 21 in which the suction valve V4 is opened to be negative pressure. The liquid inside is introduced, and the discharge valve V1 is closed at that time. The poppet valve body D rises until its locking projection 80 comes into contact with the lower surface of the coil spring s. Thereafter, the check valve body 81 comes into contact with the valve seat 32 for the check valve with respect to the stem C2. Until it falls relatively.

図５乃至図８は本発明の泡吐出器の第２実施例を示す。 5 to 8 show a second embodiment of the foam dispenser of the present invention.

第２実施例では、第１実施例に於いて、外気導入弁Ｖ２部分の構造が一部相違する。第２実施例に於ける下部係止部３８は、フランジ状の係止凸部３９として構成している。但し、第２実施例では、空気用ピストンＣ３の筒状弁部４５の下端が下部係止部３８に当接した状態で、筒状弁部４５とステムＣ２との間と、空気用シリンダ２０内との、通気が可能な通気手段を、空気用シリンダ２０の筒状弁部４５下端部に通気用切欠き４２を設けて構成している。また、弁座用筒部５５の大径部６１に通気用窓６２を設けている。その他の構成は第１実施例と同様であるため、同符号を付して、説明を省略する。 The second embodiment is partially different from the first embodiment in the structure of the outside air introduction valve V2. The lower locking portion 38 in the second embodiment is configured as a flange-shaped locking projection 39. However, in the second embodiment, with the lower end of the tubular valve portion 45 of the air piston C3 in contact with the lower locking portion 38, between the tubular valve portion 45 and the stem C2, and the air cylinder 20 The ventilation means that can ventilate the inside is configured by providing a notch 42 for ventilation at the lower end of the cylindrical valve portion 45 of the cylinder 20 for air. Further, a ventilation window 62 is provided in the large diameter portion 61 of the valve seat cylinder portion 55. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

上記泡吐出器１は、図５の状態から吐出ヘッドＣ６を押し下げると、空気用ピストンＣ３がステムＣ２に対して相対的に上昇して外気導入弁Ｖ２が閉じる。図５に於ける外気導入弁Ｖ２は、図６の拡大図でより明らかな如く、当初筒状弁部４５の上端部は弁座用筒部５５の大径部６１に位置し、外気導入弁Ｖ２が開いた状態にあるが、吐出ヘッドＣ６を押し下げると、空気用ピストンＣ３が止まった状態でステムＣ２及び吐出ヘッドＣ６が下降し、筒状弁部４５がステムＣ２に対し相対的に上昇して、その先端部がテーパ部６０を介して外気導入弁用の弁座５９内面に摺動可能に嵌合し、外気導入弁Ｖ２が閉塞する。外気導入弁Ｖ２が閉塞された空気用シリンダ２０は、上部係止部４８に当接する弁座用筒部５５により押し下げられる。 When the foam discharger 1 pushes down the discharge head C6 from the state of FIG. 5, the air piston C3 rises relative to the stem C2, and the outside air introduction valve V2 closes. As apparent from the enlarged view of FIG. 6, the outside air introduction valve V2 in FIG. 5 is initially located at the large diameter portion 61 of the valve seat cylinder portion 55 at the upper end portion of the tubular valve portion 45. Although V2 is in an open state, when the discharge head C6 is pushed down, the stem C2 and the discharge head C6 are lowered while the piston for air C3 is stopped, and the cylindrical valve portion 45 is raised relative to the stem C2. Thus, the tip end portion of the valve seat 59 is slidably fitted to the inside surface of the valve seat 59 for the outside air introduction valve via the taper portion 60, and the outside air introduction valve V2 is closed. The air cylinder 20 with the outside air introduction valve V 2 closed is pushed down by the valve seat cylinder portion 55 that abuts the upper locking portion 48.

吐出ヘッドＣ６の押圧を解除すると、コイルスプリングｓの付勢力により作動部材Ｃが上昇し、その際空気用ピストンＣ３がステムＣ２に対して相対的に下降して外気導入弁Ｖ２が開き、空気用シリンダ２０内の負圧化によって外気が空気用シリンダ２０内に導入される。作動部材Ｃの最下降位置に於ける筒状弁部４５の上端部は図７と同様に外気導入弁用の弁座５９内面に摺動可能に嵌合しているが、作動部材Ｃの上昇により空気用ピストンＣ３が止まった状態でステムＣ２及び吐出ヘッドＣ６が上昇し、筒状弁部４５がステムＣ２に対して相対的に下降して、筒状弁部４５の上端部が図６と同様の大径部６１に位置し、外気導入弁Ｖ２が開放され、矢印で示す如く外気が外気導入弁Ｖ２を介して、ステムＣ２と筒状弁部４５との間、通気用切欠き４２を介して空気用シリンダ２０内に導入される。外気導入弁Ｖ２が開放された空気用シリンダ２０は下部係止部３８により押し上げられる。 When the pressure of the discharge head C6 is released, the actuating member C is raised by the biasing force of the coil spring s. At this time, the air piston C3 is lowered relative to the stem C2, and the outside air introduction valve V2 is opened. The outside air is introduced into the air cylinder 20 by the negative pressure in the cylinder 20. The upper end portion of the cylindrical valve portion 45 at the lowermost position of the operating member C is slidably fitted to the inner surface of the valve seat 59 for the outside air introduction valve as in FIG. With the air piston C3 stopped, the stem C2 and the discharge head C6 are raised, the tubular valve portion 45 is lowered relative to the stem C2, and the upper end portion of the tubular valve portion 45 is the same as FIG. Located in the same large-diameter portion 61, the outside air introduction valve V2 is opened, and as shown by an arrow, outside air is provided between the stem C2 and the tubular valve portion 45 via the outside air introduction valve V2, and a ventilation notch 42 is formed. Through the air cylinder 20. The air cylinder 20 with the outside air introduction valve V2 opened is pushed up by the lower locking portion 38.

１：泡吐出器
Ａ：装着キャップ
１０…周壁、１１…頂壁、１２…ガイド筒
Ｂ：シリンダ部材
２０…空気用シリンダ、２１…液用シリンダ、２２…吸込み弁用の弁座、
２３…パイプ嵌合筒、２４…吸上げ用のパイプ、２５…係止リブ、２６…係止突条
Ｃ：作動部材
Ｃ１：液用ピストン
３０…嵌合筒部、３１…摺動部、３２…逆止弁用の弁座
Ｃ２：ステム
３５…吐出弁用の弁座、３６…吐出弁体、３７…縦突条、３８…下部係止部、
３９…係止凸部、４０…通気用凹溝、４１…縦突条
Ｃ３：空気用ピストン
４２…通気用切欠き、４５…筒状弁部、４６…階段状の隔壁、４７…摺動部、
４８…上部係止部、
４９…支持突起
Ｃ４：装着筒部材
５０…上部装着筒部、５１…下部装着筒部、５２…フランジ、５３…底板、
５４…弁抑え板、５５…弁座用筒部、５６…環状凹部、５７…縦凹溝、
５８…隙間用リブ、５９…外気導入弁用の弁座、６０…テーパ部、６１…大径部、
６２…通気用窓
Ｃ５：起泡部材
６５…メッシュ、６６…筒体
Ｃ６：吐出ヘッド
７０…縦筒、７１…頂板、７２…外周壁、７３…内周壁、７４…ノズル、
７５…吐出口、７６…リブ、
Ｄ：ポペット弁体
８０…係止突部、８１…逆止弁体
Ｅ：スペーサー
Ｖ１：吐出弁
Ｖ２：外気導入弁
Ｖ３：逆止弁
Ｖ４：吸込み弁
ｓ：コイルスプリング
ｐ：空気通路
Ｒ：気液混合室
１００：容器体
１０１…口頸部 1: Foam dispenser A: mounting cap 10 ... peripheral wall, 11 ... top wall, 12 ... guide cylinder B: cylinder member 20 ... air cylinder, 21 ... liquid cylinder, 22 ... valve seat for suction valve,
23 ... Pipe fitting cylinder, 24 ... Pipe for suction, 25 ... Locking rib, 26 ... Locking protrusion C: Actuating member C1: Liquid piston 30 ... Fitting cylinder part, 31 ... Sliding part, 32 ... Valve seat C2 for check valve: Stem 35 ... Valve seat for discharge valve, 36 ... Discharge valve body, 37 ... Vertical protrusion, 38 ... Lower locking part,
DESCRIPTION OF SYMBOLS 39 ... Locking convex part, 40 ... Groove for ventilation, 41 ... Vertical protrusion C3: Piston for air 42 ... Notch for ventilation, 45 ... Cylindrical valve part, 46 ... Stair-like partition, 47 ... Sliding part ,
48 ... upper locking part,
49 ... support projection C4: mounting cylinder member 50 ... upper mounting cylinder part, 51 ... lower mounting cylinder part, 52 ... flange, 53 ... bottom plate,
54 ... Valve pressing plate, 55 ... Tube seat cylinder, 56 ... Annular recess, 57 ... Vertical groove,
58 ... rib for gap, 59 ... valve seat for outside air introduction valve, 60 ... taper part, 61 ... large diameter part,
62 ... Ventilation window C5: Foaming member 65 ... Mesh, 66 ... Cylinder C6: Discharge head 70 ... Vertical cylinder, 71 ... Top plate, 72 ... Outer peripheral wall, 73 ... Inner peripheral wall, 74 ... Nozzle,
75 ... discharge port, 76 ... rib,
D: Poppet valve body 80 ... locking protrusion, 81 ... check valve body E: spacer V1: discharge valve V2: outside air introduction valve V3: check valve V4: suction valve s: coil spring p: air passage R: air Liquid mixing chamber 100: container body 101 ... mouth and neck

Claims

容器体（１００）の口頸部（１０１）外周に嵌合させる装着キャップ（Ａ）に上端部を固定して容器体（１００）内に垂下するとともに、大径の空気用シリンダ（２０）及び小径の液用シリンダ（２１）を上下に同心円状に連設してなるシリンダ部材（Ｂ）と、液用シリンダ（２１）内を摺動する液用ピストン（Ｃ１）を、吐出弁（Ｖ１）を備えたステム（Ｃ２）外周下部より突設するとともに、空気用シリンダ（２０）内を摺動する空気用ピストン（Ｃ３）をステム（Ｃ２）外周上部に連携させ、ステム（Ｃ２）内と連通する吐出口（７５）を備えた吐出ヘッド（Ｃ６）を嵌着して上方付勢状態で上下動可能に装着した作動部材（Ｃ）を備え、吐出弁（Ｖ１）は、ステム（Ｃ２）内上部に突設した吐出弁用の弁座（３５）に、別体の吐出弁体（３６）を載置して構成され、作動部材（Ｃ）の上下動により液用シリンダ（２１）内の液と空気用シリンダ（２０）内の空気を合流させて起泡部材（Ｃ５）を介して起泡させ、吐出口（７５）より吐出する如く構成した泡吐出器であって、ステム（Ｃ２）の外周上端部に嵌着した下部装着筒部（５１）の上部に、内部に起泡部材（Ｃ５）を嵌合した上部装着筒部（５０）を延設し、下部嵌着筒部（５１）下面外周縁部より垂設した弁座用筒部（５５）とステム（Ｃ２）外周との間に環状凹部（５６）を画成した装着筒部材（Ｃ４）を設け、上部装着筒部（５０）の外周に、ステム（Ｃ２）に対する下部装着筒部（５１）の嵌合強度より小なる嵌合強度で、吐出ヘッド（Ｃ６）を嵌着し、空気用ピストン（Ｃ３）は、ステム（Ｃ２）外周に所定幅の上下動が可能に嵌合させた筒状弁部（４５）と、空気用シリンダ（２０）内周に摺動可能に嵌合させた摺動部（４７）とを、空気用シリンダ（２０）内上下を区画する隔壁（４６）で連結して構成し、空気用シリンダ（２０）内から、ステム（Ｃ２）と筒状弁部（４５）との間、環状凹部（５６）内を介してステム（Ｃ２）内に連通する空気通路ｐを形成し、筒状弁部（４５）の上端部と、弁座用筒部（５５）の内周面とで、作動部材（Ｃ）の下降時に閉塞し、作動部材（Ｃ）の上昇時に開弁して外部と空気用シリンダ（２０）内を連通する外気導入弁（Ｖ２）を構成したことを特徴とする泡吐出器。 The upper end portion is fixed to the mounting cap (A) fitted to the outer periphery of the mouth / neck portion (101) of the container body (100) and suspended in the container body (100), and a large-diameter air cylinder (20) and A cylinder member (B) formed by concentrically connecting a small-diameter liquid cylinder (21) vertically and a liquid piston (C1) sliding in the liquid cylinder (21) are connected to a discharge valve (V1). The air piston (C3) sliding in the air cylinder (20) is linked to the stem (C2) upper periphery, and communicates with the inside of the stem (C2). A discharge head (C6) having a discharge port (75) to be fitted and an operating member (C) mounted so as to be movable up and down in an upwardly biased state. The discharge valve (V1) is disposed in the stem (C2). Separate discharge valve on the valve seat (35) for the discharge valve (36) is placed, and the foaming member (C5) is formed by joining the liquid in the liquid cylinder (21) and the air in the air cylinder (20) by the vertical movement of the operating member (C). The foam discharger is configured to be bubbled through and discharged from the discharge port (75). The bubble discharger is formed on the upper portion of the lower mounting cylinder (51) fitted to the upper end of the outer periphery of the stem (C2). An upper mounting cylinder part (50) fitted with a foam member (C5) is extended and a valve seat cylinder part (55) and a stem (C2) are suspended from the lower peripheral edge part of the lower fitting cylinder part (51). A mounting cylinder member (C4) defining an annular recess (56) between the outer circumference and the outer circumference is provided, and the fitting strength of the lower mounting cylinder part (51) to the stem (C2) is provided on the outer circumference of the upper mounting cylinder part (50). The discharge head (C6) is fitted with a smaller fitting strength, and the air piston (C3) is attached to the outer periphery of the stem (C2). An air cylinder includes a cylindrical valve portion (45) fitted so as to be movable up and down with a constant width and a sliding portion (47) fitted so as to be slidable on the inner periphery of the air cylinder (20). (20) Connected by partition walls (46) that divide the upper and lower sides, and from the inside of the air cylinder (20), between the stem (C2) and the tubular valve portion (45), in the annular recess (56) An air passage p communicating with the inside of the stem (C2) is formed through the upper end portion of the tubular valve portion (45) and the inner peripheral surface of the tubular portion for valve seat (55). A foam discharger comprising an outside air introduction valve (V2) that is closed when the operating member (C) is raised and is opened when the operating member (C) is raised to communicate between the outside and the air cylinder (20).

隔壁（４６）の上面内周縁部に弁座用筒部（５５）の下端が当接する上部係止部（４８）を設け、ステム（Ｃ２）外周に筒状弁部（４５）の下端が当接する下部係止部（３８）を突設し、筒状弁部（４５）の下端が下部係止部（３８）に当接した状態で、筒状弁部（４５）とステム（Ｃ２）との間と、空気用シリンダ（２０）内との、通気が可能な通気手段を備え、上部係止部（４８）上に弁座用筒部（５５）の下端が当接する状態から、下部係止部（３８）上に筒状弁部（４５）の下端が当接する状態までの、筒状弁部（４５）のステム（Ｃ２）に対する相対的上下動が可能に構成した請求項１に記載の泡吐出器。 An upper locking portion (48) with which the lower end of the valve seat tube portion (55) abuts is provided on the inner peripheral edge of the upper surface of the partition wall (46). With the lower locking portion (38) in contact therewith protruding, the cylindrical valve portion (45), the stem (C2), and the lower end of the cylindrical valve portion (45) are in contact with the lower locking portion (38). And the inside of the cylinder for air (20) are provided with ventilation means capable of venting, so that the lower end of the valve seat cylinder part (55) comes into contact with the upper locking part (48). 2. The structure according to claim 1, wherein the tubular valve portion (45) can move up and down relative to the stem (C 2) until the lower end of the tubular valve portion (45) abuts on the stop portion (38). Foam dispenser.

隔壁（４６）の上面内周縁部に、周方向複数突設した各支持突起（４９）の上面を、上部係止部（４８）として構成した請求項２に記載の泡吐出器。 The foam discharger according to claim 2, wherein the upper surface of each of the plurality of circumferentially projecting support protrusions (49) is formed as an upper locking portion (48) on the inner peripheral edge of the upper surface of the partition wall (46).

下部係止部（３８）として、ステム（Ｃ２）外周にフランジ状の係止凸部（３９）を突設し、前記通気手段として係止凸部（３９）の上面に放射状の複数の通気用凹溝（４０）を凹設した請求項２又は請求項３に記載の泡吐出器。 As the lower locking portion (38), a flange-shaped locking projection (39) is projected on the outer periphery of the stem (C2), and a plurality of radial ventilation holes are provided on the upper surface of the locking projection (39) as the ventilation means. The foam discharger according to claim 2 or 3, wherein the concave groove (40) is provided in a concave manner.

下部係止部（３８）として、ステム（Ｃ２）外周にフランジ状の係止凸部（３９）を突設し、前記通気手段として、筒状弁部（４５）の下端部に通気用切欠き（４２）を設けた請求項２又は請求項３に記載の泡吐出器。 As the lower locking portion (38), a flange-shaped locking projection (39) is provided on the outer periphery of the stem (C2), and as the ventilation means, a ventilation notch is formed at the lower end of the tubular valve portion (45). The foam discharger according to claim 2 or 3, wherein (42) is provided.

弁座用筒部（５５）の内周面上部を小径の外気導入弁用の弁座（５９）に形成するとともに、テーパ部（６０）を介して、内周面下部を大径部（６１）に形成し、筒状弁部（４５）のステム（Ｃ２）に対する最上昇状態で、筒状弁部（４５）の上端部が外気導入弁用の弁座（５９）に摺動可能に嵌合し、筒状弁部（４５）のステム（Ｃ２）に対する最下降状態で、筒状弁部（４５）の上端部が大径部（６１）位置に相対下降して外部と空気用シリンダ（２０）内とが連通する請求項１乃至請求項５のいずれか１項に記載の泡吐出器。 The upper part of the inner peripheral surface of the valve seat tube part (55) is formed in the valve seat (59) for a small-diameter outside air introduction valve, and the lower part of the inner peripheral surface is formed through the taper part (60). ) And the upper end of the tubular valve portion (45) is slidably fitted to the valve seat (59) for the outside air introduction valve in the most elevated state with respect to the stem (C2) of the tubular valve portion (45). When the tubular valve portion (45) is in the lowest lowered state with respect to the stem (C2), the upper end portion of the tubular valve portion (45) is relatively lowered to the position of the large diameter portion (61) and the outside and the air cylinder ( 20) The foam dispenser according to any one of claims 1 to 5, wherein the inside communicates.

弁座用筒部（５５）の大径部（６１）に通気用窓６２を設けた請求項６に記載の泡吐出器。 The foam discharger according to claim 6, wherein a ventilation window 62 is provided in the large diameter portion (61) of the valve seat tube portion (55).