JP2015030490A

JP2015030490A - Foamer pump

Info

Publication number: JP2015030490A
Application number: JP2013159889A
Authority: JP
Inventors: 角田　義幸; Yoshiyuki Tsunoda; 義幸角田
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2015-02-16
Anticipated expiration: 2033-07-31
Also published as: JP6131142B2

Abstract

PROBLEM TO BE SOLVED: To inhibit a liquid from solidifying on a foam member.SOLUTION: A push-down head 20 includes: a fixing member 44 fixed to an upper end part of a stem 16; an operation member 45 which is disposed on the fixing member 44 so as to be movable downward; and a connection passage 53 which includes a vertical passage 53a extending in a vertical direction and connects a foam member 18 with a nozzle hole 46. An elastic seal part 56 which closes the vertical passage 53a so that the vertical passage 53a may open is disposed at one of the fixing member 44 and the operation member 45. A pressing body 58, which presses the elastic seal part 56 in the vertical direction to elastically deform the elastic seal part 56 and thereby open the vertical passage 53a, is disposed at the other of the fixing member 44 and the operation member 45. A spring constant of the elastic seal part 56 is smaller than a spring constant of a biasing member.

Description

本発明は、フォーマポンプに関する。 The present invention relates to a former pump.

従来から、例えば下記特許文献１に示すようなフォーマポンプが知られている。フォーマポンプは、液体が収容された容器体の口部に、上方付勢状態で下方移動可能に立設されるステムと、ステムの上端部に配設されノズル孔が形成された押下ヘッドと、ステムを上方に付勢する付勢部材と、ステムに連係する液用ピストンと、内部に液用ピストンが上下摺動自在に収容された液用シリンダと、ステムに連係する空気用ピストンと、内部に空気用ピストンが上下摺動自在に収容された空気用シリンダと、液用シリンダからの液体と空気用シリンダからの空気とを混合する気液混合室と、気液混合室とノズル孔との間に配設され、気液混合室からの気液混合体を発泡する発泡部材と、を備えている。
フォーマポンプは、押下ヘッドを押し下げてステムを下方に移動させることにより、容器体内の液体を移送するとともに空気と混合させ、これらの気液混合体が発泡されてなる泡体を吐出する。 Conventionally, for example, a former pump as shown in Patent Document 1 below is known. The former pump has a stem erected at the mouth portion of the container body in which liquid is accommodated so as to be movable downward in an upward biased state, a pressing head disposed at the upper end portion of the stem and having a nozzle hole formed therein, An urging member for urging the stem upward; a liquid piston linked to the stem; a liquid cylinder in which the liquid piston is housed slidably up and down; an air piston linked to the stem; An air cylinder in which an air piston is slidably moved vertically, a gas-liquid mixing chamber for mixing the liquid from the liquid cylinder and the air from the air cylinder, and the gas-liquid mixing chamber and the nozzle hole. And a foaming member that foams the gas-liquid mixture from the gas-liquid mixing chamber.
The former pump moves the stem downward by pushing down the pressing head, thereby transferring the liquid in the container and mixing it with air, and discharging the foam formed by foaming these gas-liquid mixture.

特開２００５−１３９４５号公報Japanese Patent Laid-Open No. 2005-13945

しかしながら、前記従来のフォーマポンプでは、繰り返し使用する過程で、発泡部材上で液体が乾いて固化する可能性があった。なお液体が発泡部材上で固化すると、例えば泡体を適正な泡質に発泡し難くなる等の問題などがある。 However, in the conventional former pump, the liquid may dry and solidify on the foamed member in the process of repeated use. In addition, when a liquid solidifies on a foaming member, there exists a problem of becoming difficult to foam a foam to appropriate foam quality, etc., for example.

本発明は、前述した事情に鑑みてなされたものであって、発泡部材上で液体が固化するのを抑えることができるフォーマポンプを提供することを目的とする。 This invention is made | formed in view of the situation mentioned above, Comprising: It aims at providing the former pump which can suppress that a liquid solidifies on a foaming member.

前記課題を解決するために、本発明は以下の手段を提案している。
本発明に係るフォーマポンプは、液体が収容された容器体の口部に、上方付勢状態で下方移動可能に立設されるステムと、前記ステムの上端部に配設されノズル孔が形成された押下ヘッドと、前記ステムを上方に付勢する付勢部材と、前記ステムに連係する液用ピストンと、内部に前記液用ピストンが上下摺動自在に収容された液用シリンダと、前記ステムに連係する空気用ピストンと、内部に前記空気用ピストンが上下摺動自在に収容された空気用シリンダと、前記液用シリンダからの液体と前記空気用シリンダからの空気とを混合する気液混合室と、前記気液混合室と前記ノズル孔との間に配設され、前記気液混合室からの気液混合体を発泡する発泡部材と、を備えるフォーマポンプであって、前記押下ヘッドは、前記ステムの上端部に固定された固定部材と、前記固定部材上に下方移動可能に配設された操作部材と、上下方向に延びる上下流路を有し前記発泡部材と前記ノズル孔とを接続する接続路と、を備え、前記固定部材および前記操作部材のうちのいずれか一方には、前記上下流路内を開放可能に閉塞する弾性シール部が配設され、いずれか他方には、前記弾性シール部を上下方向に押圧して弾性変形させることで前記上下流路内を開放する押圧体が配設され、前記弾性シール部のばね定数は、前記付勢部材のばね定数よりも小さいことを特徴とする。 In order to solve the above problems, the present invention proposes the following means.
The former pump according to the present invention includes a stem that is erected in an upwardly biased state at a mouth portion of a container body that contains a liquid, and a nozzle hole that is disposed at an upper end portion of the stem. A pressing head, an urging member that urges the stem upward, a liquid piston linked to the stem, a liquid cylinder in which the liquid piston is housed slidably up and down, and the stem An air piston linked to the air cylinder, an air cylinder in which the air piston is housed slidably up and down, and a gas-liquid mixture for mixing the liquid from the liquid cylinder and the air from the air cylinder A foaming member that is disposed between the gas-liquid mixing chamber and the nozzle hole, and foams the gas-liquid mixture from the gas-liquid mixing chamber, wherein the pressing head is At the upper end of the stem A fixed member that is fixed, an operation member that is disposed on the fixed member so as to be movable downward, and a connection path that has a vertical channel extending in the vertical direction and connects the foam member and the nozzle hole. An elastic seal portion that closes the upper and lower flow paths so as to be openable is disposed in one of the fixing member and the operation member, and the elastic seal portion is disposed in the vertical direction on the other A pressing body that releases the inside of the upper and lower flow paths by being pressed and elastically deformed is disposed, and a spring constant of the elastic seal portion is smaller than a spring constant of the urging member.

この発明によれば、操作部材を押下する前の状態では、弾性シール部が上下流路内を閉塞している。
泡体を吐出するときには、操作部材を押下する。このフォーマポンプでは、弾性シール部のばね定数が、付勢部材のばね定数よりも小さいことから、操作部材が、弾性シール部の弾性力に抗して固定部材上で下方に向けて移動して、押圧体が、弾性シール部を上下方向に押圧し弾性シール部を弾性変形させる。すると、弾性シール部による上下流路内の閉塞が解除され、上下流路内が開放される。
操作部材をさらに押下すると、この操作部材を介して固定部材が押下されて押下ヘッド全体が下方に移動し、付勢部材の付勢力に抗してステムが押し下げられる。するとステムに連係し、液用ピストンおよび空気用ピストンそれぞれが、液用シリンダ内および空気用シリンダ内を下方に向けて摺動し、液用シリンダ内の液体と空気用シリンダ内の空気とが気液混合室に送られて混合される。そして、この気液混合体が発泡部材によって発泡させられて泡体となり、泡体が接続路を通してノズル孔から吐出される。泡体の吐出は、操作部材の押下を停止したり、解除したりすることで停止される。
操作部材の押下を解除すると、付勢部材の付勢力により、ステム、押下ヘッド、液用ピストンおよび空気用ピストンが上方に向けて復元変位する一方で、弾性シール部が復元変形する。このとき、弾性シール部が復元変形することで、操作部材が、弾性シール部の弾性復元力によって固定部材上で上方に向けて復元変位させられるとともに、弾性シール部が上下流路内を閉塞する。
このフォーマポンプによれば、泡体の吐出時には、弾性シール部による上下流路内の閉塞を解除させ、発泡部材からの泡体をノズル孔にスムーズに供給させる一方、泡体の吐出の前後では、弾性シール部によって上下流路内を閉塞し、発泡部材がノズル孔を通して外気にさらされるのを抑制することができる。これにより、発泡部材上で液体が乾いて固化するのを抑えることが可能になり、例えば適正な泡質の泡体を安定して発泡すること等ができる。 According to this invention, before the operation member is pressed down, the elastic seal portion closes the inside of the upper and lower flow paths.
When discharging the foam, the operation member is pressed. In this former pump, since the spring constant of the elastic seal portion is smaller than the spring constant of the biasing member, the operation member moves downward on the fixed member against the elastic force of the elastic seal portion. The pressing body presses the elastic seal portion in the vertical direction to elastically deform the elastic seal portion. Then, the blockage in the upper and lower flow paths by the elastic seal portion is released, and the upper and lower flow paths are opened.
When the operating member is further pressed, the fixing member is pressed through the operating member, the entire pressing head moves downward, and the stem is pressed down against the biasing force of the biasing member. Then, the liquid piston and the air piston are slid downward in the liquid cylinder and the air cylinder, and the liquid in the liquid cylinder and the air in the air cylinder are separated. It is sent to the liquid mixing chamber and mixed. And this gas-liquid mixture is made to foam with a foaming member, it becomes a foam, and a foam is discharged from a nozzle hole through a connection path. The ejection of the foam is stopped by stopping or releasing the operation member.
When the pressing of the operation member is released, the urging force of the urging member causes the stem, the pressing head, the liquid piston and the air piston to be restored and displaced upward, while the elastic seal portion is restored and deformed. At this time, the elastic seal portion is restored and deformed, so that the operating member is restored and displaced upward on the fixing member by the elastic restoring force of the elastic seal portion, and the elastic seal portion closes the inside of the vertical flow path. .
According to this former pump, at the time of discharging the foam, the blockage in the upper and lower flow paths by the elastic seal portion is released, and the foam from the foam member is smoothly supplied to the nozzle hole, while before and after the foam is discharged. It is possible to block the inside of the upper and lower flow paths by the elastic seal portion and to prevent the foam member from being exposed to the outside air through the nozzle holes. Thereby, it becomes possible to suppress that a liquid dries and solidifies on a foaming member, for example, foam of a suitable foam quality can be made to foam stably.

また、前記弾性シール部は、上下方向に延びる胴部と、前記胴部の一端開口部を閉塞する閉塞部と、を備え、前記押圧体は、上下方向に延びるとともに基端部が固定端とされ、先端部が、前記胴部の他端開口部から前記胴部内に進入して前記閉塞部に上下方向に対向する棒状に形成されていてもよい。 The elastic seal portion includes a body portion extending in the vertical direction and a closing portion for closing one end opening of the body portion, and the pressing body extends in the vertical direction and has a base end portion as a fixed end. The distal end portion may be formed in a rod shape that enters the barrel portion from the other end opening of the barrel portion and faces the closed portion in the vertical direction.

この場合、押圧体が、前述の棒状に形成されているので、押圧体が、弾性シール部を上下方向に押圧して弾性変形させるときに、例えば、弾性シール部から押圧体に加えられる反力を、押圧体上で先端部から基端部に向けて上下方向に沿って伝達させ、固定端とされた基端部によって確実に受け止めさせること等が可能になり、弾性シール部をスムーズに弾性変形させることができる。 In this case, since the pressing body is formed in the above-described rod shape, when the pressing body presses the elastic seal portion in the vertical direction and elastically deforms, for example, the reaction force applied from the elastic seal portion to the pressing body. Can be transmitted along the vertical direction from the front end to the base end on the pressing body and securely received by the base end that is the fixed end. Can be deformed.

また、前記弾性シール部は、前記胴部の外周面が前記上下流路の内周面に当接することで、前記上下流路内を閉塞してもよい。 In addition, the elastic seal portion may block the inside of the upper and lower flow paths by the outer peripheral surface of the body portion coming into contact with the inner peripheral surface of the upper and lower flow paths.

この場合、弾性シール部が、この弾性シール部の胴部の外周面を上下流路の内周面に当接させることで、上下流路内を閉塞するので、例えば、胴部の外周面と上下流路の内周面を互いの全周にわたって気密に当接させる等することにより、上下流路内を気密性高く閉塞することができる。 In this case, the elastic seal portion closes the upper and lower flow paths by bringing the outer peripheral surface of the barrel portion of the elastic seal portion into contact with the inner peripheral surfaces of the upper and lower flow paths. By making the inner peripheral surfaces of the upper and lower flow paths airtight over the entire circumference, the upper and lower flow paths can be closed with high airtightness.

また、前記弾性シール部は、前記固定部材に、前記胴部の一端開口部を下方に向けるとともに前記胴部の他端開口部を前記操作部材に向けて開口させた状態で配設され、前記押圧体は、前記操作部材から下方に延びて前記胴部の他端開口部から前記胴部内に進入していてもよい。 The elastic seal portion is disposed on the fixing member in a state where one end opening of the body portion is directed downward and the other end opening portion of the body portion is opened toward the operation member, The pressing body may extend downward from the operation member and enter the body portion from the other end opening of the body portion.

この場合、押圧体が、操作部材から下方に延びているので、操作部材を押下するときに、この操作部材の押下力を、押圧体を介して弾性シール部に効率的に伝達させ、押圧体によって閉塞部を押し込むことが可能になり、弾性シール部をスムーズに弾性変形させることができる。 In this case, since the pressing body extends downward from the operating member, when the operating member is pressed, the pressing force of the operating member is efficiently transmitted to the elastic seal portion via the pressing body, and the pressing body By this, it becomes possible to push in the closing portion, and the elastic seal portion can be elastically deformed smoothly.

また、前記胴部の一端開口部には、下側から上側に向かうに従い漸次、縮径する縮径部が備えられていてもよい。 The one end opening of the body portion may be provided with a reduced diameter portion that gradually decreases in diameter from the lower side toward the upper side.

この場合、弾性シール部の胴部の一端開口部に、縮径部が備えられているので、押圧体が弾性シール部の閉塞部を押し込むときに、例えば縮径部を伸長変形させること等が可能になり、弾性シール部をスムーズに弾性変形させることができる。 In this case, since the reduced diameter portion is provided at one end opening of the body portion of the elastic seal portion, for example, when the pressing body pushes the closed portion of the elastic seal portion, the reduced diameter portion may be deformed and expanded. This enables the elastic seal portion to be elastically deformed smoothly.

また、前記操作部材は、前記固定部材に上下動自在に嵌合されていてもよい。 Further, the operation member may be fitted to the fixed member so as to be movable up and down.

この場合、操作部材が、固定部材に上下動自在に嵌合されているので、操作部材が固定部材上で下方に向けて移動するときに、操作部材の径方向の位置を安定させ易くすることが可能になり、弾性シール部をスムーズに弾性変形させることができる。 In this case, since the operation member is fitted to the fixed member so as to be movable up and down, the radial position of the operation member can be easily stabilized when the operation member moves downward on the fixed member. Thus, the elastic seal portion can be elastically deformed smoothly.

本発明に係るフォーマポンプによれば、発泡部材上で液体が固化するのを抑えることができる。 According to the former pump according to the present invention, the liquid can be prevented from solidifying on the foam member.

本発明の第１実施形態に係るフォーマポンプが備えられた吐出容器の要部を示す縦断面図である。It is a longitudinal cross-sectional view which shows the principal part of the discharge container provided with the former pump which concerns on 1st Embodiment of this invention. 図１に示すフォーマポンプの要部を示す拡大縦断面図である。FIG. 2 is an enlarged longitudinal sectional view showing a main part of the former pump shown in FIG. 1. 図１に示すフォーマポンプの作用を説明するための拡大縦断面図である。FIG. 2 is an enlarged longitudinal sectional view for explaining the operation of the former pump shown in FIG. 1. 本発明の第１実施形態の変形例に係るフォーマポンプの要部を示す拡大縦断面図である。It is an expanded longitudinal cross-sectional view which shows the principal part of the former pump which concerns on the modification of 1st Embodiment of this invention. 図４に示すフォーマポンプの作用を説明するための拡大縦断面図である。FIG. 5 is an enlarged longitudinal sectional view for explaining the operation of the former pump shown in FIG. 4. 本発明の第２実施形態に係るフォーマポンプの要部を示す拡大縦断面図である。It is an expanded longitudinal cross-sectional view which shows the principal part of the former pump which concerns on 2nd Embodiment of this invention. 図６に示すフォーマポンプの作用を説明するための拡大縦断面図である。FIG. 7 is an enlarged longitudinal sectional view for explaining the operation of the former pump shown in FIG. 6.

（第１実施形態）
以下、図面を参照し、本発明の第１実施形態に係るフォーマポンプを備える吐出容器を説明する。
図１および図２に示すように、吐出容器１は、容器体２と、フォーマポンプ１０と、を備えている。容器体２には、液状の内容物（液体）が収容される。フォーマポンプ１０は、容器体２内の内容物を泡状にして吐出する。 (First embodiment)
Hereinafter, with reference to drawings, a discharge container provided with a former pump concerning a 1st embodiment of the present invention is explained.
As shown in FIGS. 1 and 2, the discharge container 1 includes a container body 2 and a former pump 10. The container body 2 contains a liquid content (liquid). The former pump 10 discharges the contents in the container body 2 in the form of foam.

フォーマポンプ１０は、装着キャップ１１と、空気用シリンダ１２と、液用シリンダ１３と、液用ピストン１４と、付勢部材１５と、ステム１６と、空気用ピストン１７と、発泡部材１８と、気液混合室１９と、押下ヘッド２０と、を備えている。 The former pump 10 includes a mounting cap 11, an air cylinder 12, a liquid cylinder 13, a liquid piston 14, a biasing member 15, a stem 16, an air piston 17, a foaming member 18, A liquid mixing chamber 19 and a pressing head 20 are provided.

ここで空気用シリンダ１２、液用シリンダ１３、液用ピストン１４および空気用ピストン１７は筒状に形成されている。これらの空気用シリンダ１２、液用シリンダ１３、液用ピストン１４および空気用ピストン１７、並びに前述の装着キャップ１１およびステム１６の各中心軸線は、共通軸上に位置し、容器体２の軸線と同軸に配置されている。
以下、この共通軸を軸線Ｏといい、軸線Ｏに沿う方向を上下方向といい、上下方向に沿った容器体２の底部側を下側といい、下側の反対側を上側といい、軸線Ｏに直交する方向を径方向といい、軸線Ｏ回りに周回する方向を周方向という。 Here, the air cylinder 12, the liquid cylinder 13, the liquid piston 14 and the air piston 17 are formed in a cylindrical shape. The central axes of the air cylinder 12, the liquid cylinder 13, the liquid piston 14 and the air piston 17, and the mounting cap 11 and the stem 16 described above are located on a common axis, and the axis of the container body 2 It is arranged coaxially.
Hereinafter, this common axis is referred to as an axis O, the direction along the axis O is referred to as the vertical direction, the bottom side of the container body 2 along the vertical direction is referred to as the lower side, and the opposite side of the lower side is referred to as the upper side. A direction orthogonal to O is referred to as a radial direction, and a direction around the axis O is referred to as a circumferential direction.

装着キャップ１１は、容器体２の口部２ａに装着される。装着キャップ１１は、容器体２の口部２ａに螺着される下筒部２１と、下筒部２１よりも小径の上筒部２２と、これらの下筒部２１および上筒部２２を連結する連結段部２３と、を備えている。 The mounting cap 11 is mounted on the mouth 2 a of the container body 2. The mounting cap 11 connects the lower cylinder part 21 screwed into the mouth part 2 a of the container body 2, the upper cylinder part 22 having a smaller diameter than the lower cylinder part 21, and the lower cylinder part 21 and the upper cylinder part 22. Connecting step 23.

空気用シリンダ１２は、装着キャップ１１の前記連結段部２３と容器体２の口部２ａとの間に上下方向に挟持された環状の取付け部２５と、取付け部２５から下方に向けて延設された周壁部２６と、周壁部２６から径方向の内側に向けて突設された環状の底壁部２７と、を備えている。 The air cylinder 12 is provided with an annular mounting portion 25 sandwiched in the vertical direction between the connection step portion 23 of the mounting cap 11 and the mouth portion 2 a of the container body 2, and extends downward from the mounting portion 25. And a ring-shaped bottom wall portion 27 protruding from the peripheral wall portion 26 inward in the radial direction.

液用シリンダ１３は、空気用シリンダ１２と一体に形成されている。液用シリンダ１３は、空気用シリンダ１２の底壁部２７の内周縁から下方に向けて延設された基筒部２８と、基筒部２８の下端から下方に向けて連設され、下方に向かうに従い漸次縮径するテーパ部２９と、テーパ部２９の下端から下方に向けて連設された垂下筒部３０と、を備えている。液用シリンダ１３において基筒部２８とテーパ部２９とが連結された部分の内周面には、上下方向に延在する縦リブが、周方向に間隔をあけて複数突設されている。 The liquid cylinder 13 is formed integrally with the air cylinder 12. The liquid cylinder 13 is provided continuously from the inner peripheral edge of the bottom wall portion 27 of the air cylinder 12 downward and a base cylinder portion 28 extending downward from the lower end of the base cylinder portion 28. The taper part 29 which is gradually diameter-reduced as it goes is provided, and the drooping cylinder part 30 provided in a row from the lower end of the taper part 29 downward. A plurality of vertical ribs extending in the vertical direction are provided on the inner peripheral surface of the portion of the liquid cylinder 13 where the base tube portion 28 and the taper portion 29 are connected to each other with a gap in the circumferential direction.

液用シリンダ１３の内部には、前記液用ピストン１４が上下摺動自在に収容されている。液用ピストン１４は、ステム１６に連係する。液用ピストン１４は、液用シリンダ１３内に液密状態で上下摺動可能に嵌合する大筒部３１と、下端が大筒部３１に連結された小筒部３２と、を備えている。 The liquid piston 14 is accommodated inside the liquid cylinder 13 so as to be slidable up and down. The liquid piston 14 is linked to the stem 16. The liquid piston 14 includes a large cylindrical portion 31 that fits in the liquid cylinder 13 so as to be vertically slidable in a liquid-tight state, and a small cylindrical portion 32 having a lower end connected to the large cylindrical portion 31.

付勢部材１５は、ステム１６を上方に向けて付勢する。付勢部材１５は、ステム１６を、液用ピストン１４を介して上方に向けて付勢する。付勢部材１５は、液用ピストン１４において大筒部３１と小筒部３２とが連結された部分と、液用シリンダ１３の前記縦リブと、の間に介装されている。なお付勢部材１５としては、例えばコイルスプリングや樹脂バネ等を採用することができる。 The urging member 15 urges the stem 16 upward. The urging member 15 urges the stem 16 upward via the liquid piston 14. The urging member 15 is interposed between a portion of the liquid piston 14 where the large cylinder portion 31 and the small cylinder portion 32 are connected, and the vertical rib of the liquid cylinder 13. As the biasing member 15, for example, a coil spring or a resin spring can be employed.

液用シリンダ１３、液用ピストン１４および付勢部材１５内には、棒状の弁部材３４が挿通されている。弁部材３４の上端部には、中空の逆円錐状の上部弁体３４ａが形成され、弁部材３４の下端部には、下部弁体３４ｂが形成されている。上部弁体３４ａは、液用ピストン１４の上端部に形成された弁座部に、この弁座部の上方から離間可能に着座する。下部弁体３４ｂは、液用シリンダ１３のテーパ部２９から上方に離間していて、テーパ部２９に着座可能に形成されている。下部弁体３４ｂの外周面には、液用シリンダ１３の前記縦リブの間に配置されるガイド凸部が突設されている。 A rod-shaped valve member 34 is inserted into the liquid cylinder 13, the liquid piston 14, and the urging member 15. A hollow inverted conical upper valve body 34 a is formed at the upper end of the valve member 34, and a lower valve body 34 b is formed at the lower end of the valve member 34. The upper valve body 34a is seated on a valve seat portion formed at the upper end portion of the liquid piston 14 so as to be separated from above the valve seat portion. The lower valve body 34 b is spaced upward from the tapered portion 29 of the liquid cylinder 13 and is formed so as to be seated on the tapered portion 29. On the outer peripheral surface of the lower valve body 34b, a guide convex portion disposed between the vertical ribs of the liquid cylinder 13 is projected.

ステム１６は、容器体２の口部２ａに、上方付勢状態で下方移動可能に立設される。ステム１６は、空気用シリンダ１２内に挿通されている。ステム１６の下端部は、液用ピストン１４の小筒部３２に外嵌されている。ステム１６には、径方向の外側に向けて突出する環状のフランジ部１６ａと、径方向の内側に向けて突出する環状の台座部１６ｂと、が、下方からこの順に上下方向に間隔をあけて配置されている。ステム１６のうち、台座部１６ｂよりも上側に位置する上端部は、装着キャップ１１の上筒部２２内に配置されている。 The stem 16 is erected on the mouth portion 2a of the container body 2 so as to be movable downward in an upwardly biased state. The stem 16 is inserted into the air cylinder 12. The lower end portion of the stem 16 is externally fitted to the small cylinder portion 32 of the liquid piston 14. The stem 16 has an annular flange portion 16a protruding outward in the radial direction and an annular pedestal portion 16b protruding inward in the radial direction. Has been placed. An upper end portion of the stem 16 located above the pedestal portion 16 b is disposed in the upper tube portion 22 of the mounting cap 11.

空気用ピストン１７は、空気用シリンダ１２の内部に上下摺動自在に収容されている。空気用ピストン１７は、ステム１６に連係する。空気用ピストン１７は、ステム１６に外装された内摺動筒部３７と、空気用シリンダ１２内に嵌合された外摺動筒部３８と、これらの内摺動筒部３７と外摺動筒部３８とを連結する連結部３９と、を備えている。 The air piston 17 is accommodated in the air cylinder 12 so as to be slidable up and down. The air piston 17 is linked to the stem 16. The air piston 17 includes an inner sliding cylinder portion 37 that is externally mounted on the stem 16, an outer sliding cylinder portion 38 that is fitted in the air cylinder 12, and the inner sliding cylinder portion 37 and the outer sliding cylinder portion 37. And a connecting portion 39 that connects the tube portion 38.

内摺動筒部３７は、ステム１６において前記フランジ部１６ａよりも上側に位置し、かつ前記台座部１６ｂよりも下側に位置する摺動部分に、上下摺動可能に外嵌されている。内摺動筒部３７の下端縁は、フランジ部１６ａに離間可能に着座している。 The inner sliding cylinder portion 37 is externally fitted to a sliding portion located above the flange portion 16a in the stem 16 and below the pedestal portion 16b so as to be vertically slidable. The lower end edge of the inner sliding cylinder portion 37 is seated on the flange portion 16a so as to be separable.

連結部３９は、内摺動筒部３７および外摺動筒部３８それぞれにおける上下方向の中央部同士を全周にわたって連結する環状に形成されている。連結部３９には、空気用シリンダ１２の内部のうち、この連結部３９よりも上方に画成される上室４０ａ内と、この連結部３９よりも下方に画成される下室４０ｂ内と、を連通する貫通孔が形成されている。 The connecting portion 39 is formed in an annular shape that connects the center portions in the vertical direction of the inner sliding cylinder portion 37 and the outer sliding cylinder portion 38 over the entire circumference. The connecting portion 39 includes an upper chamber 40 a defined above the connecting portion 39 and a lower chamber 40 b defined below the connecting portion 39 in the air cylinder 12. , Through holes are formed.

内摺動筒部３７において連結部３９に連結された部分よりも下側に位置する部分には、弁筒部４１が嵌合されている。弁筒部４１の外周面には、前記貫通孔を開閉する弾性変形可能な環状の外気導入弁４１ａが突設されている。外気導入弁４１ａの外周縁部は連結部３９の下面に離間可能に密接している。 A valve cylinder portion 41 is fitted to a portion of the inner sliding cylinder portion 37 that is located below the portion connected to the connection portion 39. On the outer peripheral surface of the valve cylinder portion 41, an elastically deformable annular outside air introduction valve 41a that opens and closes the through hole is projected. The outer peripheral edge portion of the outside air introduction valve 41a is in close contact with the lower surface of the connecting portion 39 so as to be separated.

発泡部材１８は、気液混合室１９と後述するノズル孔４６との間に配設され、気液混合室１９からの気液混合体を発泡する。発泡部材１８は、ケーシング４２と、発泡エレメント４３と、を備えている。
ケーシング４２は、上側が大径部４２ａとされ、下側が小径部４２ｂとされた２段筒状に形成されている。大径部４２ａは、後述する装着筒部４８内に嵌合され、小径部４２ｂはステム１６の上端部内に嵌合されている。 The foam member 18 is disposed between the gas-liquid mixing chamber 19 and a nozzle hole 46 described later, and foams the gas-liquid mixture from the gas-liquid mixing chamber 19. The foam member 18 includes a casing 42 and a foam element 43.
The casing 42 is formed in a two-stage cylindrical shape with the upper side being a large diameter portion 42a and the lower side being a small diameter portion 42b. The large diameter portion 42 a is fitted in a mounting cylinder portion 48 described later, and the small diameter portion 42 b is fitted in the upper end portion of the stem 16.

発泡エレメント４３は、２つ設けられていて、これらの両発泡エレメント４３は、ケーシング４２内に装着されている。両発泡エレメント４３のうち、下側の発泡エレメント４３は、筒体４３ａの下側開口面にメッシュ体４３ｂが張設されてなり、上側の発泡エレメント４３は、筒体４３ａの上側開口面にメッシュ体４３ｂが張設されてなる。 Two foaming elements 43 are provided, and both the foaming elements 43 are mounted in the casing 42. Of the two foam elements 43, the lower foam element 43 has a mesh body 43b stretched on the lower opening surface of the cylinder 43a, and the upper foam element 43 meshes on the upper opening face of the cylinder 43a. The body 43b is stretched.

気液混合室１９は、液用シリンダ１３からの内容物と空気用シリンダ１２からの空気とを混合する。気液混合室１９は、ステム１６内に配設されていて、図示の例では、ステム１６の前記上端部内に設けられている。気液混合室１９は、ステム１６内において、前記ケーシング４２の小径部４２ｂと、台座部１６ｂの上面と、の間の空間とされている。気液混合室１９内には、台座部１６ｂに着座する球状の液吐出弁１９ａが設けられている。液吐出弁１９ａは、台座部１６ｂに離間可能に形成されている。 The gas-liquid mixing chamber 19 mixes the contents from the liquid cylinder 13 and the air from the air cylinder 12. The gas-liquid mixing chamber 19 is disposed in the stem 16 and is provided in the upper end portion of the stem 16 in the illustrated example. The gas-liquid mixing chamber 19 is a space between the small diameter portion 42 b of the casing 42 and the upper surface of the pedestal portion 16 b in the stem 16. In the gas-liquid mixing chamber 19, a spherical liquid discharge valve 19a seated on the pedestal portion 16b is provided. The liquid discharge valve 19a is formed in the base part 16b so that separation | spacing is possible.

押下ヘッド２０は、ステム１６の上端部に配設されている。押下ヘッド２０は、固定部材４４と、操作部材４５と、を備えている。
固定部材４４は、ステム１６の上端部に固定されている。固定部材４４は、ステム１６と別体に形成され、ステム１６に装着されている。固定部材４４には、内容物を吐出するノズル孔４６が形成されている。固定部材４４は、天壁部４７と、装着筒部４８と、案内筒部４９と、外装筒部５０と、吐出筒部５１と、を備えている。天壁部４７、装着筒部４８、案内筒部４９および外装筒部５０は、軸線Ｏと同軸に配置されている。 The pressing head 20 is disposed at the upper end portion of the stem 16. The pressing head 20 includes a fixing member 44 and an operation member 45.
The fixing member 44 is fixed to the upper end portion of the stem 16. The fixing member 44 is formed separately from the stem 16 and is attached to the stem 16. A nozzle hole 46 for discharging the contents is formed in the fixing member 44. The fixing member 44 includes a top wall 47, a mounting cylinder 48, a guide cylinder 49, an exterior cylinder 50, and a discharge cylinder 51. The top wall 47, the mounting cylinder 48, the guide cylinder 49, and the exterior cylinder 50 are disposed coaxially with the axis O.

天壁部４７は、ステム１６の上方に位置している。天壁部４７は、表裏面が上下方向を向く板状に形成されている。装着筒部４８、案内筒部４９および外装筒部５０は、互いに同軸に配置されるとともに天壁部４７から下方に向けて延びている。装着筒部４８、案内筒部４９および外装筒部５０は、この順に大径になっている。 The top wall 47 is located above the stem 16. The top wall 47 is formed in a plate shape whose front and back faces in the vertical direction. The mounting cylinder 48, the guide cylinder 49, and the exterior cylinder 50 are arranged coaxially with each other and extend downward from the top wall 47. The mounting cylinder 48, the guide cylinder 49, and the exterior cylinder 50 have a large diameter in this order.

装着筒部４８は、装着キャップ１１の上筒部２２内に挿通され、ステム１６の上端部に外嵌されている。装着筒部４８の下端部は、この装着筒部４８において下端部よりも上側に位置し、かつステム１６の上端部に外嵌された外嵌部分よりも内径が大きくなっている。装着筒部４８の下端部内は、前記内摺動筒部３７の上端部が上下摺動自在に嵌合している。装着筒部４８において外嵌部分よりも上側に位置する部分内には、発泡部材１８が嵌合されている。 The mounting cylinder portion 48 is inserted into the upper cylinder portion 22 of the mounting cap 11 and is externally fitted to the upper end portion of the stem 16. The lower end portion of the mounting cylinder portion 48 is positioned above the lower end portion of the mounting cylinder portion 48 and has an inner diameter larger than that of the outer fitting portion that is externally fitted to the upper end portion of the stem 16. In the lower end portion of the mounting cylinder portion 48, the upper end portion of the inner sliding cylinder portion 37 is fitted so as to be slidable in the vertical direction. The foam member 18 is fitted in a portion of the mounting cylinder portion 48 that is located above the outer fitting portion.

案内筒部４９は、装着筒部４８を径方向の外側から囲繞している。案内筒部４９の内径は、装着キャップ１１の上筒部２２の外径よりも大きくなっていて、案内筒部４９の下端部は、上筒部２２に外装されている。
外装筒部５０は、案内筒部４９を径方向の外側から囲繞している。外装筒部５０は、天壁部４７の外周縁部から下方に向けて延びている。外装筒部５０の下端部は、案内筒部４９の下端部よりも上側に位置している。 The guide tube portion 49 surrounds the mounting tube portion 48 from the outside in the radial direction. The inner diameter of the guide tube portion 49 is larger than the outer diameter of the upper tube portion 22 of the mounting cap 11, and the lower end portion of the guide tube portion 49 is externally attached to the upper tube portion 22.
The exterior cylinder part 50 surrounds the guide cylinder part 49 from the outside in the radial direction. The exterior cylinder part 50 extends downward from the outer peripheral edge part of the top wall part 47. The lower end portion of the exterior tube portion 50 is located above the lower end portion of the guide tube portion 49.

吐出筒部５１は、装着筒部４８から径方向の外側に向けて突出し、案内筒部４９および外装筒部５０を径方向に貫通している。吐出筒部５１の径方向の内側の端部内は、装着筒部４８の上端部内に開口している。吐出筒部５１の径方向の外側の端部は、外装筒部５０よりも径方向の外側に位置していて、この端部内は、前記ノズル孔４６とされている。 The discharge cylinder 51 protrudes radially outward from the mounting cylinder 48 and penetrates the guide cylinder 49 and the exterior cylinder 50 in the radial direction. The inside of the radially inner end of the discharge cylinder 51 opens into the upper end of the mounting cylinder 48. The radially outer end portion of the discharge cylinder portion 51 is located radially outside the exterior cylinder portion 50, and the inside of this end portion is the nozzle hole 46.

前記固定部材４４には、接続路５３と、内筒部５４と、外筒部５５と、が設けられている。接続路５３は、発泡部材１８とノズル孔４６とを接続する。接続路５３は、装着筒部４８内および吐出筒部５１内によって形成されている。接続路５３には、上下方向の延びる上下流路５３ａと、径方向に延びる横流路５３ｂと、が備えられている。 The fixing member 44 is provided with a connection path 53, an inner cylinder portion 54, and an outer cylinder portion 55. The connection path 53 connects the foam member 18 and the nozzle hole 46. The connection path 53 is formed in the mounting cylinder part 48 and the discharge cylinder part 51. The connection path 53 includes an upper and lower flow path 53a extending in the vertical direction and a horizontal flow path 53b extending in the radial direction.

上下流路５３ａは、発泡部材１８から上方に延び、軸線Ｏと同軸に配置されている。上下流路５３ａは、装着筒部４８内において、発泡部材１８よりも上側に位置する部分により構成されている。横流路５３ｂは、上下流路５３ａの上端部から径方向の外側に延びていて、吐出筒部５１内において、ノズル孔４６よりも径方向の内側に位置する部分により構成されている。 The vertical channel 53 a extends upward from the foam member 18 and is disposed coaxially with the axis O. The upper and lower flow path 53 a is configured by a portion positioned above the foam member 18 in the mounting cylinder portion 48. The horizontal flow path 53b extends radially outward from the upper end of the vertical flow path 53a, and is configured by a portion located inside the discharge cylinder 51 in the radial direction with respect to the nozzle hole 46.

前記上下流路５３ａの上下方向の両端部はそれぞれ、発泡部材１８またはノズル孔４６に接続されている。本実施形態では、これらの両端部のうち、下端部は、発泡部材１８に直接、接続されていて、上端部は、ノズル孔４６に、横流路５３ｂを通して接続されている。 Both ends in the vertical direction of the vertical channel 53a are connected to the foam member 18 or the nozzle hole 46, respectively. In the present embodiment, among these both end portions, the lower end portion is directly connected to the foam member 18, and the upper end portion is connected to the nozzle hole 46 through the lateral flow path 53 b.

内筒部５４および外筒部５５は、軸線Ｏと同軸に配置されていて、天壁部４７から上方に向けて延びている。内筒部５４および外筒部５５は、この順に大径になっていて、外筒部５５は、天壁部４７の外周縁部に立設されている。内筒部５４の上端部は、外筒部５５の上端部よりも下側に位置していて、内筒部５４の下端部内は、上下流路５３ａの上端部（装着筒部４８の上端部内）に向けて開口している。 The inner cylinder part 54 and the outer cylinder part 55 are arranged coaxially with the axis O and extend upward from the top wall part 47. The inner cylinder part 54 and the outer cylinder part 55 have a large diameter in this order, and the outer cylinder part 55 is erected on the outer peripheral edge part of the top wall part 47. The upper end portion of the inner cylinder portion 54 is located below the upper end portion of the outer cylinder portion 55, and the lower end portion of the inner cylinder portion 54 is within the upper end portion of the vertical flow path 53 a (inside the upper end portion of the mounting cylinder portion 48). ).

そして本実施形態では、固定部材４４には、上下流路５３ａ内に位置し、この上下流路５３ａ内を開放可能に閉塞する弾性シール部５６が配設されている。弾性シール部５６は、固定部材４４に対して固定され、図示の例では、固定部材４４とは別体に形成されている。弾性シール部５６は、例えば固定部材４４や操作部材４５等よりも柔らかい材質、例えばニトリルゴム、ブチルゴム、シリコンゴム、エラストマー等の弾性変形可能な軟材質で形成されていて、弾性シール部５６のばね定数は、付勢部材１５のばね定数よりも小さくなっている。 In the present embodiment, the fixing member 44 is provided with an elastic seal portion 56 that is located in the upper and lower flow paths 53a and closes the upper and lower flow paths 53a so as to be openable. The elastic seal portion 56 is fixed to the fixing member 44, and is formed separately from the fixing member 44 in the illustrated example. The elastic seal portion 56 is formed of a soft material that is elastically deformable, such as nitrile rubber, butyl rubber, silicon rubber, or elastomer, for example, and is softer than the fixing member 44, the operation member 45, and the like. The constant is smaller than the spring constant of the urging member 15.

弾性シール部５６は、上下方向に延びる胴部５６ａと、胴部５６ａの下端部（一端開口部）を閉塞する閉塞部５６ｂと、を備えている。弾性シール部５６は、内部が上端部（他端開口部）内を通して操作部材４５に向けて開口する有底筒状に形成されている。弾性シール部５６は、上下流路５３ａの上端部内に軸線Ｏと同軸に配置されている。 The elastic seal portion 56 includes a body portion 56a extending in the vertical direction and a closing portion 56b that closes a lower end portion (one end opening portion) of the body portion 56a. The elastic seal portion 56 is formed in a bottomed cylindrical shape whose inside opens toward the operation member 45 through the upper end portion (the other end opening portion). The elastic seal portion 56 is disposed coaxially with the axis O in the upper end portion of the upper and lower flow path 53a.

弾性シール部５６の胴部５６ａのうち、上端部および下端部は、この両端部の間に位置する中間部よりも大径に形成されている。胴部５６ａの上端部は、内筒部５４内に液密に嵌合されていて、前記中間部に段部を介して連結されている。前記段部は、上側から下側に向かうに従い漸次、縮径している。 Of the body portion 56a of the elastic seal portion 56, the upper end portion and the lower end portion are formed to have a larger diameter than the intermediate portion located between the both end portions. The upper end portion of the trunk portion 56a is fitted in the inner cylinder portion 54 in a liquid-tight manner, and is connected to the intermediate portion via a stepped portion. The stepped portion gradually decreases in diameter from the upper side to the lower side.

胴部５６ａの上端部には、径方向の外側に向けて延びる封止部５７が形成されている。封止部５７は、軸線Ｏと同軸に配置された環状に形成されている。封止部５７の下面には、環状の凹溝部５７ａが形成されている。凹溝部５７ａ内には、内筒部５４の上端部が液密に嵌合している。 A sealing portion 57 extending toward the outside in the radial direction is formed at the upper end portion of the body portion 56a. The sealing portion 57 is formed in an annular shape arranged coaxially with the axis O. An annular groove 57 a is formed on the lower surface of the sealing portion 57. The upper end portion of the inner cylinder portion 54 is liquid-tightly fitted in the concave groove portion 57a.

胴部５６ａの下端部は、この弾性シール部５６の閉塞部５６ｂに上側から連なっている。この下端部には、下側から上側に向かうに従い漸次、縮径する縮径部５６ｃが備えられている。縮径部５６ｃは、錘状に形成されていて、軸線Ｏ方向に沿う断面視において、直線状（テーパ状）に延びている。縮径部５６ｃの下端は、この弾性シール部５６の閉塞部５６ｂに連結されている。 The lower end portion of the body portion 56a is connected to the closing portion 56b of the elastic seal portion 56 from above. The lower end portion is provided with a reduced diameter portion 56c that gradually decreases in diameter from the lower side toward the upper side. The reduced diameter portion 56c is formed in a weight shape and extends in a straight line shape (tapered shape) in a sectional view along the axis O direction. The lower end of the reduced diameter portion 56 c is connected to the closing portion 56 b of the elastic seal portion 56.

弾性シール部５６は、この弾性シール部５６の外面が上下流路５３ａの内面に当接することで上下流路５３ａ内を閉塞している。弾性シール部５６は、胴部５６ａの外周面が上下流路５３ａの内周面に当接することで、上下流路５３ａにおいて横流路５３ｂが接続される部分よりも下側に位置する部分を閉塞している。 The elastic seal part 56 closes the inside of the vertical flow path 53a by the outer surface of the elastic seal part 56 coming into contact with the inner surface of the vertical flow path 53a. The elastic seal portion 56 closes a portion of the upper and lower flow passage 53a that is located below the portion to which the horizontal flow passage 53b is connected by the outer peripheral surface of the body portion 56a coming into contact with the inner peripheral surface of the upper and lower flow passage 53a. doing.

本実施形態では、弾性シール部５６のうち、胴部５６ａの外周面が、装着筒部４８の内周面に、周方向の全周にわたって液密に当接（密接）している。また図示の例では、弾性シール部５６の胴部５６ａにおいて、この胴部５６ａの縮径部５６ｃと、閉塞部５６ｂと、を連結する部分の外周面が、装着筒部４８の内周面に当接している。さらに弾性シール部５６の胴部５６ａの外周面が、装着筒部４８の内周面において、吐出筒部５１が開口する部分よりも下側に位置する部分に当接している。 In the present embodiment, of the elastic seal portion 56, the outer peripheral surface of the trunk portion 56 a is in contact with (in close contact with) the inner peripheral surface of the mounting cylinder portion 48 over the entire circumference in the circumferential direction. Further, in the illustrated example, in the body portion 56 a of the elastic seal portion 56, the outer peripheral surface of the portion connecting the reduced diameter portion 56 c of the body portion 56 a and the closing portion 56 b is the inner peripheral surface of the mounting cylinder portion 48. It is in contact. Further, the outer peripheral surface of the body portion 56 a of the elastic seal portion 56 is in contact with a portion located on the lower side of the inner peripheral surface of the mounting tube portion 48 than the portion where the discharge tube portion 51 is opened.

操作部材４５は、固定部材４４上に下方移動可能に配設されていて、固定部材４４に上下摺動自在に嵌合されている。操作部材４５は、弾性シール部５６を弾性変形させながら、固定部材４４に対して相対的に下方に移動する。操作部材４５は、軸線Ｏと同軸に配置された有頂筒状に形成されていて、固定部材４４の外筒部５５内に嵌合されている。操作部材４５の頂壁部は、上方に向けて膨出していて、上方に向けて凸となる凸球面状に形成されている。 The operation member 45 is disposed on the fixed member 44 so as to be movable downward, and is fitted to the fixed member 44 so as to be slidable up and down. The operation member 45 moves downward relative to the fixing member 44 while elastically deforming the elastic seal portion 56. The operation member 45 is formed in a top tube shape that is arranged coaxially with the axis O, and is fitted in the outer tube portion 55 of the fixing member 44. The top wall portion of the operation member 45 bulges upward and is formed in a convex spherical shape that is convex upward.

操作部材４５には、押圧体５８が設けられている。押圧体５８は、弾性シール部５６を上下方向に押圧して弾性変形させることで、上下流路５３ａ内を開放する。押圧体５８は、上下方向に延びるとともに上端部（基端部）が固定端とされ、下端部（先端部）が、弾性シール部５６の胴部５６ａの上端部から胴部５６ａ内に進入して閉塞部５６ｂに上下方向に対向する棒状に形成されている。 The operating member 45 is provided with a pressing body 58. The pressing body 58 opens the inside of the up-and-down flow path 53a by pressing and elastically deforming the elastic seal portion 56 in the vertical direction. The pressing body 58 extends in the vertical direction and has an upper end portion (base end portion) as a fixed end, and a lower end portion (tip end portion) enters the body portion 56 a from the upper end portion of the body portion 56 a of the elastic seal portion 56. Thus, it is formed in a bar shape facing the closing portion 56b in the vertical direction.

押圧体５８は、操作部材４５の頂壁部から下方に延びていて、軸線Ｏと同軸に配置されている。押圧体５８の下端部は、弾性シール部５６の閉塞部５６ｂ上に位置している。押圧体５８は、上側から下側に向かうに従い段状に縮径していて、押圧体５８のうち、上下方向の中央部よりも下側に位置する下側部分は、前記中央部よりも上側に位置する上側部分よりも小径となっている。 The pressing body 58 extends downward from the top wall portion of the operation member 45 and is arranged coaxially with the axis O. The lower end portion of the pressing body 58 is located on the closing portion 56 b of the elastic seal portion 56. The pressing body 58 has a stepped diameter decreasing from the upper side to the lower side, and the lower part of the pressing body 58 located below the central part in the vertical direction is above the central part. The diameter is smaller than that of the upper portion located at the center.

以上のように構成されたフォーマポンプ１０では、気液混合室１９は、前記下室４０ｂに、空気導入路Ｒを通して連通可能となっている。空気導入路Ｒは、前記小径部４２ｂの外周面に形成された第１連通溝と、装着筒部４８の前記外嵌部分の内周面に形成された第２連通溝と、ステム１６の前記摺動部分の外周面に形成された第３連通溝と、を備えている。 In the former pump 10 configured as described above, the gas-liquid mixing chamber 19 can communicate with the lower chamber 40b through the air introduction path R. The air introduction path R includes a first communication groove formed on the outer peripheral surface of the small diameter portion 42b, a second communication groove formed on the inner peripheral surface of the outer fitting portion of the mounting cylinder portion 48, and the stem 16 A third communication groove formed on the outer peripheral surface of the sliding portion.

そしてフォーマポンプ１０は、押下ヘッド２０を押し下げてステム１６を下方に移動させることにより、容器体２内の内容物を移送するとともに空気と混合させ、これらの気液混合体が発泡されてなる泡状の内容物（以下、泡体という）をノズル孔４６から吐出する。 The former pump 10 pushes down the pressing head 20 to move the stem 16 downward, thereby transferring the contents in the container body 2 and mixing them with air, and foaming these gas-liquid mixtures. The shaped contents (hereinafter referred to as foam) are discharged from the nozzle hole 46.

このフォーマポンプ１０は、操作部材４５を押下する前の初期状態では、前述のように弾性シール部５６の外面が上下流路５３ａの内面に当接していて、弾性シール部５６が上下流路５３ａ内を閉塞している。 In the former pump 10, in the initial state before the operation member 45 is pressed, the outer surface of the elastic seal portion 56 is in contact with the inner surface of the vertical flow path 53 a as described above, and the elastic seal portion 56 is in contact with the vertical flow path 53 a. The inside is blocked.

このフォーマポンプ１０の使用時には、まず操作部材４５を押下する。このフォーマポンプ１０では、弾性シール部５６のばね定数が、付勢部材１５のばね定数よりも小さいことから、図３に示すように、操作部材４５が、弾性シール部５６の弾性力に抗して固定部材４４上で下方に向けて移動し、押圧体５８が、弾性シール部５６の閉塞部５６ｂを押し込んで弾性シール部５６を弾性変形させる。このとき、弾性シール部５６が弾性変形し、弾性シール部５６の縮径部５６ｃが上下方向に伸長変形して胴部５６ａの下端部が縮径することで、弾性シール部５６の外面が上下流路５３ａの内面から離間して、弾性シール部５６による上下流路５３ａ内の閉塞が解除される。 When using the former pump 10, the operation member 45 is first pressed. In the former pump 10, since the spring constant of the elastic seal portion 56 is smaller than the spring constant of the biasing member 15, the operation member 45 resists the elastic force of the elastic seal portion 56 as shown in FIG. 3. Then, the pressing member 58 pushes the closing portion 56b of the elastic seal portion 56 to elastically deform the elastic seal portion 56. At this time, the elastic seal portion 56 is elastically deformed, the reduced diameter portion 56c of the elastic seal portion 56 is expanded and deformed in the vertical direction, and the lower end portion of the body portion 56a is reduced in diameter, so that the outer surface of the elastic seal portion 56 is upward. The blockage in the upper and lower flow paths 53a by the elastic seal portion 56 is released away from the inner surface of the lower flow path 53a.

操作部材４５をさらに押下し、操作部材４５の下端部が固定部材４４の天壁部４７の上面に当接すると、固定部材４４と操作部材４５とが互いに係合し合うことで、操作部材４５の固定部材４４に対する下方移動が規制される。なお弾性シール部５６のばね定数は、前述の初期状態から、操作部材４５の下方移動が規制される規制状態までの間、付勢部材１５のばね定数よりも小さくなっている。 When the operation member 45 is further pressed down and the lower end portion of the operation member 45 comes into contact with the upper surface of the top wall portion 47 of the fixing member 44, the fixing member 44 and the operation member 45 are engaged with each other. The downward movement with respect to the fixing member 44 is restricted. The spring constant of the elastic seal portion 56 is smaller than the spring constant of the urging member 15 from the above-described initial state to a restricted state where the downward movement of the operation member 45 is restricted.

すると、図１に示すようなフォーマポンプ１０では、操作部材４５を介して固定部材４４が押下されて押下ヘッド２０全体が下方に移動し、ステム１６および液用ピストン１４が一体的に押し下げられる。
このとき、空気用ピストン１７の内摺動筒部３７がステム１６の前記摺動部分の外周面上を摺動するとともに、内摺動筒部３７の上端部が装着筒部４８の内周面上を摺動することにより、空気用ピストン１７の上下方向の位置が保持される。その結果、ステム１６のフランジ部１６ａと、空気用ピストン１７の内摺動筒部３７の下端縁と、の間に、前記空気導入路Ｒと前記下室４０ｂとを連通する図示しない連通隙間が設けられ、下室４０ｂと気液混合室１９とが連通される。またこのとき、弁部材３４も下方に移動させられ、弁部材３４の下部弁体３４ｂが液用シリンダ１３のテーパ部２９に着座して、液用シリンダ１３の下端開口部が閉塞される。 Then, in the former pump 10 as shown in FIG. 1, the fixing member 44 is pressed through the operation member 45 and the entire pressing head 20 moves downward, and the stem 16 and the liquid piston 14 are pressed down integrally.
At this time, the inner sliding cylindrical portion 37 of the air piston 17 slides on the outer peripheral surface of the sliding portion of the stem 16, and the upper end portion of the inner sliding cylindrical portion 37 is the inner peripheral surface of the mounting cylindrical portion 48. By sliding up, the vertical position of the air piston 17 is maintained. As a result, a communication gap (not shown) that communicates the air introduction path R and the lower chamber 40b between the flange portion 16a of the stem 16 and the lower end edge of the inner sliding cylinder portion 37 of the air piston 17 is provided. The lower chamber 40b and the gas-liquid mixing chamber 19 are communicated with each other. At this time, the valve member 34 is also moved downward, the lower valve body 34b of the valve member 34 is seated on the tapered portion 29 of the liquid cylinder 13, and the lower end opening of the liquid cylinder 13 is closed.

装着筒部４８の下端縁が、空気用ピストン１７の連結部３９に当接するまで押下ヘッド２０を押し下げると、押下ヘッド２０とともに空気用ピストン１７が下方に移動し、空気用ピストン１７の外摺動筒部３８が、空気用シリンダ１２の周壁部２６の内周面上を、下方に向けて摺動する。 When the push-down head 20 is pushed down until the lower end edge of the mounting cylinder portion 48 contacts the connecting portion 39 of the air piston 17, the air piston 17 moves downward together with the push-down head 20, and the air piston 17 slides outward. The cylindrical portion 38 slides downward on the inner peripheral surface of the peripheral wall portion 26 of the air cylinder 12.

このとき、空気用ピストン１７の弁筒部４１の外気導入弁４１ａは、連結部３９の下面に密接されたままの状態であり、前記貫通孔は閉塞されている。これにより、下室４０ｂ内の空気が圧縮され、この空気が、前記連通隙間および空気導入路Ｒを通して気液混合室１９に移送される。またこのとき、液用シリンダ１３の下端開口部が閉塞された状態で、付勢部材１５を圧縮変形させつつ、液用ピストン１４を下方に移動させて、弁部材３４の上部弁体３４ａを液用ピストン１４の前記弁座部から離間させる。これにより、液用シリンダ１３の内部とステム１６の内部とが連通され、液用シリンダ１３内の内容物が、前記弁座部の内側および上部弁体３４ａの外側を通過してステム１６内の気液混合室１９に移送される。 At this time, the outside air introduction valve 41a of the valve cylinder portion 41 of the air piston 17 remains in close contact with the lower surface of the connecting portion 39, and the through hole is closed. Thereby, the air in the lower chamber 40b is compressed, and this air is transferred to the gas-liquid mixing chamber 19 through the communication gap and the air introduction path R. At this time, while the lower end opening of the liquid cylinder 13 is closed, the biasing member 15 is compressed and deformed, the liquid piston 14 is moved downward, and the upper valve body 34a of the valve member 34 is moved to the liquid. The piston 14 is separated from the valve seat portion. As a result, the inside of the liquid cylinder 13 and the inside of the stem 16 communicate with each other, and the contents in the liquid cylinder 13 pass through the inside of the valve seat portion and the outside of the upper valve body 34a, and the inside of the stem 16 It is transferred to the gas-liquid mixing chamber 19.

以上のように、押下ヘッド２０を押し下げることにより、気液混合室１９に空気および内容物がそれぞれ移送され、これらは気液混合室１９で合流して混合される。この気液混合体は、発泡部材１８に移送され、下側の発泡エレメント４３のメッシュ体４３ｂおよび上側の発泡エレメント４３のメッシュ体４３ｂを順次通過することで発泡させられて泡体になり、接続路５３を流通してノズル孔４６から吐出される。 As described above, by pushing down the pressing head 20, air and contents are transferred to the gas-liquid mixing chamber 19, and these are merged and mixed in the gas-liquid mixing chamber 19. This gas-liquid mixture is transferred to the foaming member 18 and is foamed by sequentially passing through the mesh body 43b of the lower foaming element 43 and the mesh body 43b of the upper foaming element 43 to form a foam. It flows through the passage 53 and is discharged from the nozzle hole 46.

その後、押下ヘッド２０の押し下げを解除すると、付勢部材１５の弾性復元力により液用ピストン１４が上方に押し上げられる。これにより、液用ピストン１４の前記弁座部が弁部材３４の上部弁体３４ａに当接して閉じられ、気液混合室１９への内容物の移送が停止される。 Thereafter, when the depression of the pressing head 20 is released, the liquid piston 14 is pushed upward by the elastic restoring force of the urging member 15. As a result, the valve seat portion of the liquid piston 14 is closed in contact with the upper valve body 34a of the valve member 34, and the transfer of the contents to the gas-liquid mixing chamber 19 is stopped.

また、このように上昇する液用ピストン１４とともに、ステム１６および押下ヘッド２０が一体的に上昇し、ステム１６のフランジ部１６ａが空気用ピストン１７の内筒部５４の下端縁に当接することで、空気導入路Ｒを通した下室４０ｂと気液混合室１９との連通が遮断され、気液混合室１９への空気の移送が停止される。その後、付勢部材１５の弾性復元力により、空気用ピストン１７が押し上げられることで、前記下室４０ｂ内が負圧状態となり、空気用ピストン１７の弁筒部４１の外気導入弁４１ａが下方に弾性変形させられて、前記貫通孔が開放される。これにより、前記貫通孔および前記上室４０ａを通して下室４０ｂ内に外気が供給される。 Further, together with the liquid piston 14 rising in this manner, the stem 16 and the pressing head 20 are integrally raised, and the flange portion 16a of the stem 16 comes into contact with the lower end edge of the inner cylinder portion 54 of the air piston 17. The communication between the lower chamber 40b through the air introduction path R and the gas-liquid mixing chamber 19 is blocked, and the transfer of air to the gas-liquid mixing chamber 19 is stopped. Thereafter, the air piston 17 is pushed up by the elastic restoring force of the urging member 15, so that the inside of the lower chamber 40 b is in a negative pressure state, and the outside air introduction valve 41 a of the valve cylinder portion 41 of the air piston 17 is moved downward. The through hole is opened by being elastically deformed. Thus, outside air is supplied into the lower chamber 40b through the through hole and the upper chamber 40a.

またこのとき、弾性シール部５６が復元変形し、押圧体５８が弾性シール部５６によって押し上げられて、操作部材４５が、固定部材４４上で上方に向けて復元変位する。そして、弾性シール部５６の外面が上下流路５３ａの内面に当接し、弾性シール部５６が上下流路５３ａ内を閉塞する。 At this time, the elastic seal portion 56 is restored and deformed, the pressing body 58 is pushed up by the elastic seal portion 56, and the operation member 45 is restored and displaced upward on the fixed member 44. And the outer surface of the elastic seal part 56 contact | abuts to the inner surface of the up-and-down flow path 53a, and the elastic seal part 56 obstruct | occludes the inside of the up-and-down flow path 53a.

以上説明したように、本実施形態に係るフォーマポンプ１０によれば、泡体の吐出時には、弾性シール部５６による上下流路５３ａ内の閉塞を解除させ、発泡部材１８からの泡体をノズル孔４６にスムーズに供給させる一方、泡体の吐出の前後では、弾性シール部５６によって上下流路５３ａ内を閉塞し、発泡部材１８がノズル孔４６を通して外気にさらされるのを抑制することができる。これにより、発泡部材１８上で液体が乾いて固化するのを抑えることが可能になり、例えば適正な泡質の泡体を安定して発泡すること等ができる。 As described above, according to the former pump 10 according to the present embodiment, when the foam is discharged, the blockage in the upper and lower flow paths 53a by the elastic seal portion 56 is released, and the foam from the foam member 18 is removed from the nozzle hole. While being smoothly supplied to 46, before and after discharging the foam, the inside of the upper and lower flow path 53 a is closed by the elastic seal portion 56, and the foam member 18 can be prevented from being exposed to the outside air through the nozzle hole 46. Thereby, it becomes possible to suppress that the liquid dries and solidifies on the foaming member 18, for example, foam of a suitable foam quality can be stably foamed.

また押圧体５８が、前述の棒状に形成されているので、押圧体５８が、弾性シール部５６を上下方向に押圧して弾性変形させるときに、例えば、弾性シール部５６から押圧体５８に加えられる反力を、押圧体５８上で下端部から上端部に向けて上下方向に沿って伝達させ、固定端とされた上端部によって確実に受け止めさせること等が可能になり、弾性シール部５６をスムーズに弾性変形させることができる。 Further, since the pressing body 58 is formed in the above-described rod shape, when the pressing body 58 presses the elastic seal portion 56 in the vertical direction and elastically deforms, for example, the elastic body is added from the elastic seal portion 56 to the pressing body 58. The reaction force to be transmitted can be transmitted along the vertical direction from the lower end portion to the upper end portion on the pressing body 58, and can be securely received by the upper end portion that is the fixed end, etc. It can be elastically deformed smoothly.

また弾性シール部５６が、この弾性シール部５６の胴部５６ａの外周面を上下流路５３ａの内周面に当接させることで、上下流路５３ａ内を閉塞するので、例えば本実施形態のように、胴部５６ａの外周面と上下流路５３ａの内周面を互いの全周にわたって気密に当接させる等することにより、上下流路５３ａ内を気密性高く閉塞することができる。 Further, the elastic seal portion 56 closes the inside of the vertical flow path 53a by bringing the outer peripheral surface of the body portion 56a of the elastic seal portion 56 into contact with the inner peripheral surface of the vertical flow path 53a. As described above, the upper and lower flow passages 53a can be closed with high airtightness by bringing the outer peripheral surface of the body portion 56a and the inner peripheral surfaces of the upper and lower flow passages 53a into contact with each other in an airtight manner.

また押圧体５８が、操作部材４５から下方に延びているので、操作部材４５を押下するときに、この操作部材４５の押下力を、押圧体５８を介して弾性シール部５６に効率的に伝達させ、押圧体５８によって閉塞部５６ｂを押し込むことが可能になり、弾性シール部５６をスムーズに弾性変形させることができる。 In addition, since the pressing body 58 extends downward from the operation member 45, when the operation member 45 is pressed, the pressing force of the operation member 45 is efficiently transmitted to the elastic seal portion 56 via the pressing body 58. Thus, the closing part 56b can be pushed in by the pressing body 58, and the elastic seal part 56 can be elastically deformed smoothly.

さらに、弾性シール部５６の胴部５６ａの下端部に、縮径部５６ｃが備えられているので、押圧体５８が弾性シール部５６の閉塞部５６ｂを押し込むときに、例えば縮径部５６ｃを伸長変形させること等が可能になり、弾性シール部５６をスムーズに弾性変形させることができる。 Furthermore, since the reduced diameter portion 56c is provided at the lower end portion of the body portion 56a of the elastic seal portion 56, for example, when the pressing body 58 pushes the closing portion 56b of the elastic seal portion 56, the reduced diameter portion 56c is expanded. The elastic seal portion 56 can be elastically deformed smoothly.

また操作部材４５が、固定部材４４に上下摺動自在に嵌合されているので、操作部材４５が固定部材４４上で下方に向けて移動するときに、操作部材４５の径方向の位置を安定させ易くすることが可能になり、弾性シール部５６をスムーズに弾性変形させることができる。 Further, since the operation member 45 is fitted to the fixed member 44 so as to be slidable in the vertical direction, when the operation member 45 moves downward on the fixed member 44, the radial position of the operation member 45 is stabilized. Therefore, the elastic seal portion 56 can be elastically deformed smoothly.

なお本実施形態の変形例として、図４および図５に示すようなフォーマポンプ７０を採用することができる。 As a modification of the present embodiment, a former pump 70 as shown in FIGS. 4 and 5 can be employed.

このフォーマポンプ７０では、上下流路５３ａの内面に突出部７１が形成されている。突出部７１は、装着筒部４８の内周面から径方向の内側に向けて突出している。突出部７１は、装着筒部４８において、吐出筒部５１が開口する部分よりも下側に位置する部分に設けられている。突出部７１は、軸線Ｏと同軸に配置された環状に形成されている。
そしてフォーマポンプ７０では、弾性シール部５６の外面が、突出部７１の表面に当接することで、弾性シール部５６が、上下流路５３ａ内を閉塞している。突出部７１の表面には、弾性シール部５６の縮径部５６ｃの上面が、この突出部７１の下方から当接している。
このフォーマポンプ７０によれば、操作部材４５を押下すると、弾性シール部５６が弾性変形し、弾性シール部５６の縮径部５６ｃが伸長変形して縮径部５６ｃの上面が突出部７１の表面から離間して、弾性シール部５６による上下流路５３ａ内の閉塞が解除され、本実施形態と同様の作用効果を奏することができる。 In the former pump 70, a protruding portion 71 is formed on the inner surface of the upper and lower flow path 53a. The protruding portion 71 protrudes inward in the radial direction from the inner peripheral surface of the mounting cylinder portion 48. The protruding portion 71 is provided in a portion of the mounting cylinder portion 48 that is located below the portion where the discharge cylinder portion 51 is open. The protrusion 71 is formed in an annular shape arranged coaxially with the axis O.
In the former pump 70, the outer surface of the elastic seal portion 56 contacts the surface of the protruding portion 71, so that the elastic seal portion 56 closes the upper and lower flow paths 53a. The upper surface of the reduced diameter portion 56 c of the elastic seal portion 56 is in contact with the surface of the protruding portion 71 from below the protruding portion 71.
According to the former pump 70, when the operation member 45 is pressed, the elastic seal portion 56 is elastically deformed, the reduced diameter portion 56c of the elastic seal portion 56 is extended and deformed, and the upper surface of the reduced diameter portion 56c is the surface of the protruding portion 71. Thus, the blockage in the upper and lower flow paths 53a by the elastic seal portion 56 is released, and the same effect as in the present embodiment can be obtained.

（第２実施形態）
次に、本発明に係る第２実施形態のフォーマポンプを、図６および図７を参照して説明する。
なお、この第２実施形態においては、第１実施形態における構成要素と同一の部分については同一の符号を付し、その説明を省略し、異なる点についてのみ説明する。 (Second Embodiment)
Next, a former pump according to a second embodiment of the present invention will be described with reference to FIGS.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

図６に示すように、このフォーマポンプ８０では、前記固定部材４４に、前記天壁部４７と、前記装着筒部４８と、前記案内筒部４９と、前記外装筒部５０と、前記吐出筒部５１と、を備えさせるのに代えて、これらのうちの前記装着筒部４８を限定して備えさせている。そして前記操作部材４５を、軸線Ｏと同軸に配置された有頂筒状に形成するのに代えて、前記操作部材４５に、前記天壁部４７と、前記案内筒部４９と、前記外装筒部５０と、前記吐出筒部５１と、を備えさせ、さらに流路筒部８１を備えさせている。 As shown in FIG. 6, in the former pump 80, the fixing member 44 is provided with the top wall portion 47, the mounting tube portion 48, the guide tube portion 49, the exterior tube portion 50, and the discharge tube. Of these, the mounting cylinder portion 48 is limited and provided. Then, instead of forming the operation member 45 in the shape of a crest disposed coaxially with the axis O, the operation member 45 includes the top wall portion 47, the guide tube portion 49, and the exterior tube. Part 50 and the discharge cylinder part 51, and further a flow path cylinder part 81.

このフォーマポンプ８０では、装着筒部４８の上端部は、天壁部４７から離間していて、この上端部内に、前記押圧体５８が配設されている。押圧体５８は、下端部（基端部）が装着筒部４８に固定された固定端とされている。押圧体５８の下端部は、脚部５８ａを介して装着筒部４８に固定されている。脚部５８ａは、押圧体５８の下端部から径方向の外側に延びて装着筒部４８の内周面に連結されている。脚部５８ａは、周方向に間隔をあけて複数配置されていて、周方向に隣り合う脚部５８ａの間は、上下方向の両側に開口している。 In the former pump 80, the upper end portion of the mounting cylinder portion 48 is separated from the top wall portion 47, and the pressing body 58 is disposed in the upper end portion. The pressing body 58 is a fixed end with a lower end portion (base end portion) fixed to the mounting cylinder portion 48. A lower end portion of the pressing body 58 is fixed to the mounting cylinder portion 48 via a leg portion 58a. The leg portion 58 a extends from the lower end portion of the pressing body 58 in the radial direction and is connected to the inner peripheral surface of the mounting cylinder portion 48. A plurality of leg portions 58a are arranged at intervals in the circumferential direction, and the leg portions 58a adjacent in the circumferential direction are open on both sides in the vertical direction.

前記流路筒部８１は、天壁部４７から下方に向けて延び、軸線Ｏと同軸に配置されている。流路筒部８１の上端部内には、吐出筒部５１の径方向の内側の端部内が開口している。流路筒部８１の下端部は、装着筒部４８の上端部に嵌合され、図示の例では、この上端部内に上下動自在に嵌合されていて、前記上下流路５３ａは、装着筒部４８の上端部内および装着筒部４８内によって形成されている。 The flow path cylinder portion 81 extends downward from the top wall portion 47 and is disposed coaxially with the axis O. In the upper end portion of the flow path cylinder portion 81, the inside of the radially inner end portion of the discharge cylinder portion 51 is open. The lower end portion of the channel cylinder portion 81 is fitted to the upper end portion of the mounting cylinder portion 48. In the example shown in the figure, the upper and lower channels 53a are fitted in the upper end portion so as to be movable up and down. It is formed in the upper end part of the part 48 and in the mounting cylinder part 48.

そしてこのフォーマポンプ８０では、前記弾性シール部５６を、有底筒状に形成して固定部材４４に配設するのに代えて、有頂筒状に形成して前記操作部材４５に配設していて、閉塞部５６ｂが、胴部５６ａの上端部（一端開口部）を閉塞している。この弾性シール部５６は、流路筒部８１の下端部内に配置されていて、閉塞部５６ｂが、押圧体５８の上端部（先端部）により下方から支持されるとともに、胴部５６ａの下端部（他端開口部）が流路筒部８１内に液密に嵌合されている。 In the former pump 80, the elastic seal portion 56 is formed in a cylindrical shape with a top instead of being formed in a bottomed cylindrical shape and disposed on the fixing member 44. Thus, the closing part 56b closes the upper end part (one end opening part) of the body part 56a. The elastic seal portion 56 is disposed in the lower end portion of the flow path cylinder portion 81, and the closing portion 56b is supported from below by the upper end portion (tip portion) of the pressing body 58, and the lower end portion of the trunk portion 56a. The (other end opening) is fitted in the flow path cylinder 81 in a liquid-tight manner.

胴部５６ａの上端部には、径方向の外側に膨出する膨出部５６ｄが設けられている。膨出部５６ｄは、前記断面視において、径方向の外側に向けて凸となる凸曲面状に形成されている。膨出部５６ｄの上端は、この弾性シール部５６の閉塞部５６ｂに連結されている。そして本実施形態では、膨出部５６ｄのうち、最も径方向の外側に膨出する部分が、流路筒部８１の内周面に当接することで、上下流路５３ａ内が閉塞されている。
胴部５６ａのうち、上端部と下端部との間に位置する中間部は、上側から下側に向かうに従い漸次、拡径していて、この中間部には、貫通孔５６ｅが形成されている。貫通孔５６ｅは、胴部５６ａに、周方向に間隔をあけて複数形成されている。 A bulging portion 56d bulging outward in the radial direction is provided at the upper end portion of the body portion 56a. The bulging portion 56d is formed in a convex curved surface that is convex outward in the radial direction in the cross-sectional view. The upper end of the bulging portion 56d is connected to the closing portion 56b of the elastic seal portion 56. In the present embodiment, the portion of the bulging portion 56d that bulges most outward in the radial direction is in contact with the inner peripheral surface of the flow channel cylinder 81, thereby closing the inside of the vertical flow channel 53a. .
Of the body portion 56a, an intermediate portion located between the upper end portion and the lower end portion is gradually enlarged in diameter from the upper side to the lower side, and a through hole 56e is formed in the intermediate portion. . A plurality of through holes 56e are formed in the body portion 56a at intervals in the circumferential direction.

胴部５６ａの下端部には、前記封止部５７が形成されている。本実施形態では、封止部５７を、前記凹溝部５７ａを有する環状に形成するのに代えて、上下方向に延びる筒状に形成している。封止部５７の下端部は、胴部５６ａの下端部に互いの全周にわたって連結されている。封止部５７の上端部には、外嵌筒部５７ｂが形成されている。外嵌筒部５７ｂは、装着筒部４８の上端部に液密に外嵌されている。 The sealing portion 57 is formed at the lower end portion of the body portion 56a. In the present embodiment, the sealing portion 57 is formed in a cylindrical shape extending in the vertical direction instead of being formed in an annular shape having the concave groove portion 57a. The lower end portion of the sealing portion 57 is connected to the lower end portion of the trunk portion 56a over the entire circumference. An outer fitting cylinder portion 57 b is formed at the upper end portion of the sealing portion 57. The external fitting cylinder part 57 b is externally fitted in a liquid-tight manner to the upper end part of the mounting cylinder part 48.

本実施形態に係るフォーマポンプ７０によれば、操作部材４５を押下すると、図７に示すように、操作部材４５が固定部材４４上で下方に向けて移動し、弾性シール部５６の閉塞部５６ｂが押圧体５８に押し付けられて、弾性シール部５６が弾性変形させられる。このとき、弾性シール部５６の胴部５６ａおよび封止部５７が上下方向に伸長変形し、胴部５６ａの膨出部５６ｄが縮径することで、弾性シール部５６の外面が上下流路５３ａの内面から離間して、弾性シール部５６による上下流路５３ａ内の閉塞が解除される。
操作部材４５をさらに押下し、操作部材４５を介して固定部材４４が押下されて押下ヘッド２０全体が下方に移動すると、前記第１実施形態のフォーマポンプ１０と同様に、発泡部材１８で発泡させられた泡体が、接続路５３を流通してノズル孔４６から吐出される。 According to the former pump 70 according to the present embodiment, when the operation member 45 is pressed, the operation member 45 moves downward on the fixing member 44 as shown in FIG. Is pressed against the pressing body 58, and the elastic seal portion 56 is elastically deformed. At this time, the body part 56a and the sealing part 57 of the elastic seal part 56 are elongated and deformed in the vertical direction, and the bulging part 56d of the body part 56a is reduced in diameter, so that the outer surface of the elastic seal part 56 becomes the vertical channel 53a. The blockage in the up-and-down flow path 53a by the elastic seal portion 56 is released away from the inner surface.
When the operation member 45 is further pressed and the fixing member 44 is pressed via the operation member 45 and the entire pressing head 20 moves downward, the foaming member 18 causes the foaming member 18 to foam, as in the former pump 10 of the first embodiment. The produced foam flows through the connection path 53 and is discharged from the nozzle hole 46.

その後、押下ヘッド２０の押し下げを解除すると、付勢部材１５の付勢力により、液用ピストン１４、ステム１６、空気用ピストン１７および押下ヘッド２０が上方に向けて復元変位する一方で、弾性シール部５６が復元変形する。このとき図６に示すように、弾性シール部５６の復元変形力によって操作部材４５が押し上げられて、固定部材４４上で上方に向けて復元変位するとともに、弾性シール部５６が上下流路５３ａ内を閉塞する。 Thereafter, when the depression of the pressing head 20 is released, the urging force of the urging member 15 causes the liquid piston 14, the stem 16, the air piston 17 and the pressing head 20 to be restored and displaced upward, while the elastic seal portion. 56 is restored and deformed. At this time, as shown in FIG. 6, the operating member 45 is pushed up by the restoring deformation force of the elastic seal portion 56 to be restored and displaced upward on the fixing member 44, and the elastic seal portion 56 is located in the upper and lower flow paths 53 a. Occlude.

なお、本発明の技術的範囲は前記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。 The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

本発明では、弾性シール部５６は、前記実施形態に示した構成に限られない。 In the present invention, the elastic seal portion 56 is not limited to the configuration shown in the embodiment.

前記実施形態では、操作部材４５は、固定部材４４に上下摺動自在に嵌合されているが、本発明はこれに限られない。本発明では、操作部材を、固定部材上に下方移動可能に配設される他の構成に適宜変更することができる。例えば、第１実施形態およびこの第１実施形態の変形例に係るフォーマポンプにおいて、操作部材を、表裏面が上下方向を向く弾性変形可能な膜状に形成し、この操作部材を、下方に向けて押下して変形させることで、操作部材に、固定部材上で下方に向けて移動させてもよい。 In the embodiment, the operation member 45 is fitted to the fixing member 44 so as to be slidable up and down, but the present invention is not limited to this. In this invention, an operation member can be suitably changed into the other structure arrange | positioned so that a downward movement is possible on a fixed member. For example, in the former pump according to the first embodiment and the modified example of the first embodiment, the operation member is formed in an elastically deformable film shape with the front and back surfaces facing the vertical direction, and the operation member is directed downward. By pressing and deforming, the operation member may be moved downward on the fixed member.

前記実施形態では、固定部材４４は、ステム１６と別体に形成されているが、本発明はこれに限られない。本発明では、固定部材がステムに固定された他の構成に適宜変更することが可能で、例えば、固定部材がステムに一体に形成されていてもよい。 In the embodiment, the fixing member 44 is formed separately from the stem 16, but the present invention is not limited to this. In the present invention, the fixing member can be appropriately changed to another configuration in which the fixing member is fixed to the stem. For example, the fixing member may be formed integrally with the stem.

その他、本発明の趣旨に逸脱しない範囲で、前記実施形態における構成要素を周知の構成要素に置き換えることは適宜可能であり、また、前記した変形例を適宜組み合わせてもよい。 In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

２容器体
２ａ口部
１０、７０フォーマポンプ
１２空気用シリンダ
１３液用シリンダ
１４液用ピストン
１５付勢部材
１６ステム
１７空気用ピストン
１８発泡部材
１９気液混合室
２０押下ヘッド
４４固定部材
４５操作部材
４６ノズル孔
５３接続路
５３ａ上下流路
５６弾性シール部
５６ａ胴部
５６ｂ閉塞部
５８押圧体 2 Container body 2a Mouth part 10, 70 Former pump 12 Air cylinder 13 Liquid cylinder 14 Liquid piston 15 Energizing member 16 Stem 17 Air piston 18 Foaming member 19 Gas-liquid mixing chamber 20 Press head 44 Fixing member 45 Operation member 46 Nozzle hole 53 Connection path 53a Vertical flow path 56 Elastic seal part 56a Body part 56b Closure part 58 Press body

Claims

A stem erected at the mouth of the container body containing the liquid so as to be movable downward in an upwardly biased state;
A pressing head disposed at the upper end of the stem and having a nozzle hole formed thereon;
A biasing member that biases the stem upward;
A liquid piston linked to the stem;
A liquid cylinder in which the liquid piston is housed slidably up and down;
An air piston linked to the stem;
An air cylinder in which the air piston is housed slidably up and down;
A gas-liquid mixing chamber for mixing the liquid from the liquid cylinder and the air from the air cylinder;
A foam pump that is disposed between the gas-liquid mixing chamber and the nozzle hole and foams a gas-liquid mixture from the gas-liquid mixing chamber,
The pressing head includes a fixing member fixed to an upper end portion of the stem, an operation member disposed on the fixing member so as to be movable downward, and an upper and lower flow path extending in the vertical direction. A connection path for connecting the nozzle hole,
Either one of the fixing member and the operation member is provided with an elastic seal portion that closes the upper and lower flow passages in an openable manner, and the other presses the elastic seal portion in the vertical direction. Then, a pressing body that opens the upper and lower flow paths by being elastically deformed is disposed,
The former pump, wherein a spring constant of the elastic seal portion is smaller than a spring constant of the biasing member.

The former pump according to claim 1,
The elastic seal portion includes a trunk portion extending in the vertical direction, and a closing portion that closes one end opening of the trunk portion,
The pressing body extends in the up-down direction and has a base end portion as a fixed end, and a distal end portion enters the body portion from the other end opening of the body portion so as to be opposed to the closing portion in the up-down direction. A former pump characterized by being formed.

The former pump according to claim 2,
The former pump characterized in that the elastic seal portion closes the inside of the upper and lower flow paths by the outer peripheral surface of the body portion coming into contact with the inner peripheral surface of the upper and lower flow paths.

The former pump according to claim 2 or 3,
The elastic seal portion is disposed in the fixing member in a state in which one end opening of the body portion is directed downward and the other end opening portion of the body portion is opened toward the operation member.
The former pump, wherein the pressing body extends downward from the operation member and enters into the body portion from the other end opening of the body portion.

The former pump according to claim 4,
The former pump, wherein the one end opening of the body is provided with a reduced diameter portion that gradually decreases in diameter from the lower side toward the upper side.

The former pump according to any one of claims 1 to 5,
The former pump, wherein the operation member is fitted to the fixed member so as to be movable up and down.