JP5130068B2 - Foam dispenser - Google Patents

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JP5130068B2
JP5130068B2 JP2008019832A JP2008019832A JP5130068B2 JP 5130068 B2 JP5130068 B2 JP 5130068B2 JP 2008019832 A JP2008019832 A JP 2008019832A JP 2008019832 A JP2008019832 A JP 2008019832A JP 5130068 B2 JP5130068 B2 JP 5130068B2
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air chamber
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神 赤坂
理恵 三上
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Kao Corp
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Description

本発明は泡吐出器に関する。   The present invention relates to a foam dispenser.

洗剤等の泡吐出器として、特許文献１、２に記載の如く、容器本体の口部に固定したキャップに対し往復動可能に設けられる頭部を有し、頭部を往復動させることにより、容積可変の液室から内容液を、容積可変の空気室から空気を、それぞれ泡生成部に送り、この内容液と空気を泡生成部で混合発泡させ、生成した泡を頭部に設けた吐出口から吐出するに際し、頭部の往復動に連動して液室内を往復動する液ピストンを設け、液ピストンにより拡張される液室に容器本体の抗菌性のある内容液を吸入し、液ピストンにより収縮される液室の内容液を泡生成部に吐出し、頭部の往復動に連動して空気室内を往復動するエアピストンを設け、エアピストンにより拡張される空気室に外部の空気を吸入し、エアピストンにより収縮される空気室の空気を泡生成部に排出するものがある。これらの泡吐出器では、頭部とキャップの微小隙間を空気室に通ずる空気吸入経路としている。
特開2005-193972 特開2004-121898 As a foam dispenser such as a detergent, as described in Patent Documents 1 and 2, by having a head that can be reciprocated with respect to the cap fixed to the mouth of the container body, by reciprocating the head, The liquid content from the liquid chamber with variable volume and the air from the air chamber with variable volume are respectively sent to the foam generation unit, the content liquid and air are mixed and foamed by the bubble generation unit, and the generated foam is provided on the head. When discharging from the outlet, a liquid piston that reciprocates in the liquid chamber in conjunction with the reciprocating movement of the head is provided, and the antibacterial content liquid of the container body is sucked into the liquid chamber expanded by the liquid piston, and the liquid piston The liquid in the liquid chamber contracted by the air is discharged to the bubble generating unit, and an air piston that reciprocates in the air chamber in conjunction with the reciprocating motion of the head is provided, and external air is supplied to the air chamber expanded by the air piston. The air chamber that is inhaled and contracted by the air piston There are things to discharge the care of foam generation unit. In these bubble dischargers, an air suction path is formed through a minute gap between the head and the cap to the air chamber.
JP2005-193972 JP2004-121898

特許文献１、２に記載の泡吐出器では、外部の空気を空気吸入経路から空気室に取り込むときに、外水も吸引されて空気室に浸入するおそれがある。   In the foam discharge devices described in Patent Documents 1 and 2, when external air is taken into the air chamber from the air suction path, external water may also be sucked and enter the air chamber.

特許文献１に記載の泡吐出器は、頭部のスカート部の外径をキャップの外周との間の空気室への外気取り込み口を覆う傘状に張り出し、空気室への外水の浸入を防止しようとしている。   In the foam discharge device described in Patent Document 1, the outer diameter of the skirt portion of the head is projected in an umbrella shape covering the outside air intake port into the air chamber between the outer periphery of the cap, and intrusion of outside water into the air chamber is performed. Trying to prevent.

また、特許文献２に記載の泡吐出器は、頭部のスカート部の下端に内側に張り出す環状凸部を設け、この環状凸部がキャップの外周との間に形成する空気室への外気取り込み口を狭小にし、空気室への外水の浸入を防止しようとしている。   Moreover, the foam discharge device described in Patent Document 2 is provided with an annular convex portion projecting inwardly at the lower end of the skirt portion of the head, and the outside air to the air chamber formed between the annular convex portion and the outer periphery of the cap. The intake port is narrowed to prevent intrusion of outside water into the air chamber.

しかしながら、例えば容器本体を倒し、又は容器本体の外周を洗浄する環境では、空気室への外水の浸入を十分には防止できない。空気室に一旦浸入した外水は排出されず、菌等を発生する問題がある。   However, for example, in an environment where the container main body is tilted or the outer periphery of the container main body is cleaned, it is not possible to sufficiently prevent external water from entering the air chamber. The outside water that has once entered the air chamber is not discharged, and there is a problem that bacteria are generated.

本発明の課題は、泡吐出器において、空気室に浸入した水による菌の発生を防止することにある。   The subject of this invention is preventing generation | occurrence | production of the microbe by the water which permeated the air chamber in the foam discharger.

請求項１の発明は、容器本体の口部に固定したキャップに対し往復動可能に設けられる頭部を有し、頭部を往復動させることにより、容積可変の液室から内容液を、容積可変の空気室から空気を、それぞれ泡生成部に送り、この内容液と空気を泡生成部で混合発泡させ、生成した泡を頭部に設けた吐出口から吐出するに際し、頭部の往復動に連動して液室内を往復動する液ピストンを設け、液ピストンにより拡張される液室に容器本体から抗菌性のある内容液を吸入し、液ピストンにより収縮される液室の内容液を泡生成部に吐出し、頭部の往復動に連動して空気室内を往復動するエアピストンを設け、エアピストンにより拡張される空気室に容器外部の空気を吸入し、エアピストンにより収縮される空気室の空気を泡生成部に排出する泡吐出器であって、液室は空気室の底部より下方に延在し、空気室と液室を液ピストンにより区画し、空気室の底部に空気の排出口を設けるとともに、空気室の底部近傍を空気の排出口に向かう下り勾配とし、液ピストンを液室の収縮端側に押し込んだときに、液室と空気室とを連通させる液通路を液ピストンの外周と液室の内壁の間に形成するようにしたものである。 The invention of claim 1 has a head portion that is reciprocally movable with respect to a cap fixed to the mouth portion of the container main body. When the air from the variable air chamber is sent to the foam generation unit, the content liquid and air are mixed and foamed by the foam generation unit, and the generated foam is discharged from the discharge port provided in the head, the head reciprocates. A liquid piston that reciprocates in the liquid chamber in conjunction with the liquid chamber is provided, and the antibacterial content liquid is drawn from the container body into the liquid chamber expanded by the liquid piston, and the content liquid in the liquid chamber contracted by the liquid piston is bubbled. Air that is discharged to the generator and reciprocated in the air chamber in conjunction with the reciprocation of the head is provided. Air outside the container is sucked into the air chamber that is expanded by the air piston, and the air is contracted by the air piston. Foam that discharges room air to the foam generator A vessel, liquid chamber extends downwardly from the bottom of the air chamber, the air chamber and the liquid chamber partitioned by the liquid piston, provided with a discharge port of the air in the bottom of the air chamber, the vicinity of the bottom of the air chamber A downward passage toward the air discharge port is formed, and a liquid passage is formed between the outer periphery of the liquid piston and the inner wall of the liquid chamber when the liquid piston is pushed toward the contraction end of the liquid chamber. It is what you do.

（実施例１）（図１〜図５）
泡吐出器１０は、図１に示す如く、洗剤等の内容液が収容された容器本体１の口部１Ａに、キャップ２０の取付部２０Ａを固定する。キャップ２０の取付部２０Ａの内側部にはシリンダ３０の大径部３０Ａの上端部が突当てられ、大径部３０Ａの上端部にパッキン３１とともに、キャップ２０の取付部２０Ａの内側部と容器本体１の口部１Ａとの間に挟圧固定される。シリンダ３０は大径部３０Ａに連なる小径部３０Ｂを有し、小径部３０Ｂにディップチューブ３２を嵌合し、このディップチューブ３２を容器本体１の内部に挿入している。シリンダ３０は、大径部３０Ａの内部に空気室Ａを形成し、小径部３０Ｂの内部に液室Ｌを形成する。キャップ２０の筒部２０Ｂには頭部４０のステム４１が上下方向に往復動可能に挿入される。泡吐出器１０は、頭部４０を往復動させることにより、容積可変の液室Ｌから内容液を、容積可変の空室Ａから空気を、それぞれステム４１の内部に設けてある後述する泡生成部８０で混合発泡させ、生成した泡を頭部４０に設けた吐出口４２から吐出する。 Example 1 (FIGS. 1 to 5)
As shown in FIG. 1, the foam discharger 10 fixes the mounting portion 20 </ b> A of the cap 20 to the mouth portion 1 </ b> A of the container body 1 in which the content liquid such as a detergent is accommodated. The upper end portion of the large diameter portion 30A of the cylinder 30 is abutted against the inner portion of the attachment portion 20A of the cap 20, and the inner portion of the attachment portion 20A of the cap 20 and the container body together with the packing 31 at the upper end portion of the large diameter portion 30A. It is pinched and fixed between the 1 mouth part 1A. The cylinder 30 has a small diameter portion 30B connected to the large diameter portion 30A. A dip tube 32 is fitted into the small diameter portion 30B, and the dip tube 32 is inserted into the container body 1. The cylinder 30 forms an air chamber A inside the large diameter portion 30A, and forms a liquid chamber L inside the small diameter portion 30B. A stem 41 of the head 40 is inserted into the cylindrical portion 20B of the cap 20 so as to reciprocate in the vertical direction. The foam discharger 10 reciprocates the head 40 to generate the later-described foam generation in which the content liquid is supplied from the variable volume liquid chamber L and the air is supplied from the variable volume empty chamber A, respectively. The part 80 is mixed and foamed, and the generated foam is discharged from the discharge port 42 provided in the head 40.

泡吐出器１０に収容される洗剤等の内容液は抗菌剤（又は防腐剤ともいう）を添加される等により抗菌性を有する。防腐剤又は抗菌剤としては、例えば安息香酸、安息香酸パントテニルエチルエーテル、塩酸アルキルジアミノエチルグリシン、サリチル酸、ソルビン酸、デヒドロ酢酸、トリクロロヒドロキシジフェニルエーテル、パラオキシ安息香酸エステル、フェノキシエタノール、フェノール、ラウリルジアミノエチルグリシンナトリウム、イソプロピルメチルフェノール、塩化ベンザルコニウム、塩化ベンゼトニウム、塩酸クロルヘキシジシン、グルコン酸クロルヘキシジン、オルトフェニルフェノール、臭化アルキルイソキノリニウム、チモール、トリクロロカルバニリド、ハロカルバン、ヒノキチオール、２−メチル−４−イソチアゾリン−３−オン、５−クロロ−２−メチル−４−イソチアゾリン−３−オン、１，２−ベンゾイソチアゾリン−３−オン、ポリリジン、亜鉛塩、銀塩等の１つ或いは複数の組合せを用いることができる。   The content liquid such as a detergent contained in the foam dispenser 10 has an antibacterial property due to the addition of an antibacterial agent (also referred to as a preservative). Examples of the antiseptic or antibacterial agent include benzoic acid, benzoic acid pantothenyl ethyl ether, alkyldiaminoethyl glycine hydrochloride, salicylic acid, sorbic acid, dehydroacetic acid, trichlorohydroxydiphenyl ether, paraoxybenzoic acid ester, phenoxyethanol, phenol, lauryl diaminoethyl glycine Sodium, isopropylmethylphenol, benzalkonium chloride, benzethonium chloride, chlorhexidicin hydrochloride, chlorhexidine gluconate, orthophenylphenol, alkylisoquinolinium bromide, thymol, trichlorocarbanilide, halocarban, hinokitiol, 2- Methyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 1,2-benzisothiazoline- - can be used on, polylysine, zinc salts, one or more combinations of such silver salts.

泡吐出器１０は、頭部４０の吐出口４２に通ずるステム４１の下端中空部に中空ピストンガイド５１を嵌合固定し、ピストンガイド５１の下端中空部に中空液ピストン５２の中空筒部５２Ａを嵌合固定し、液ピストン５２の外周ピストン部５２Ｂをシリンダ３０の小径部３０Ｂの内壁に摺動可能に挿入し、小径部３０Ｂの下端側ばね受け部３３及び後述するポペット６０の下端バルブ６２の上端面と液ピストン５２との間に圧縮コイルばね５３を介装している。即ち、頭部４０を押しているときには、圧縮コイルばね５３の下端部が小径部３０Ｂの下端側ばね受け部３３に支持されるとともに、ポペット６０の下端バルブ６２の上端面は圧縮コイルばね５３の下端部から離れる。頭部４０から手を離したときには、圧縮コイルばね５３の下端部が小径部３０Ｂの下端側ばね受け部３３に支持されるとともに、ポペット６０の下端バルブ６２の上端面は圧縮コイルばね５３の下端部に接する。泡吐出器１０は、ピストンガイド５１と液ピストン５２の中空部を液室Ｌから延在する液吐出路５４とし、ピストンガイド５１における液吐出路５４の上端部には上端側弁座５１Ａが設けられ、弁座５１Ａには液吐出路５４からの圧力によって開くボール弁５５が密接して載置される。   In the foam discharger 10, a hollow piston guide 51 is fitted and fixed to the lower end hollow portion of the stem 41 that communicates with the discharge port 42 of the head 40, and the hollow cylindrical portion 52 </ b> A of the hollow liquid piston 52 is attached to the lower end hollow portion of the piston guide 51. The outer piston portion 52B of the liquid piston 52 is slidably inserted into the inner wall of the small diameter portion 30B of the cylinder 30, and the lower end side spring receiving portion 33 of the small diameter portion 30B and the lower end valve 62 of the poppet 60 described later are inserted. A compression coil spring 53 is interposed between the upper end surface and the liquid piston 52. That is, when the head 40 is pushed, the lower end portion of the compression coil spring 53 is supported by the lower end side spring receiving portion 33 of the small diameter portion 30B, and the upper end surface of the lower end valve 62 of the poppet 60 is the lower end of the compression coil spring 53. Leave the department. When the hand is released from the head 40, the lower end portion of the compression coil spring 53 is supported by the lower end side spring receiving portion 33 of the small diameter portion 30B, and the upper end surface of the lower end valve 62 of the poppet 60 is the lower end of the compression coil spring 53. Touch the part. The bubble discharger 10 uses a hollow portion of the piston guide 51 and the liquid piston 52 as a liquid discharge passage 54 extending from the liquid chamber L, and an upper end side valve seat 51A is provided at the upper end portion of the liquid discharge passage 54 in the piston guide 51. The ball valve 55 that is opened by the pressure from the liquid discharge passage 54 is placed in close contact with the valve seat 51A.

泡吐出器１０は、シリンダ３０の小径部３０Ｂから液ピストン５２、ピストンガイド５１に沿って延在するポペット６０を有し、ポペット６０の上端部６１をピストンガイド５１及び液ピストン５２の内周に摩擦嵌合し、ポペット６０の下端バルブ６２を小径部３０Ｂの下端側弁座３４（小径部３０Ｂの下端に形成された縮径領域）に密接して配置し、容器本体１の内部に対して液室Ｌを開閉する。ポペット６０の外周溝と液ピストン５２の内周との間、更にはピストンガイド５１の内周溝との間が前述の液吐出路５４とされる。ポペット６０は下端側の領域においてコイルばね５３の中心部に延在する。   The foam discharger 10 has a poppet 60 extending from the small diameter portion 30 </ b> B of the cylinder 30 along the liquid piston 52 and the piston guide 51, and the upper end portion 61 of the poppet 60 is arranged on the inner periphery of the piston guide 51 and the liquid piston 52. The lower end valve 62 of the poppet 60 is placed in close contact with the lower end side valve seat 34 of the small diameter portion 30B (the reduced diameter region formed at the lower end of the small diameter portion 30B). The liquid chamber L is opened and closed. The liquid discharge path 54 is formed between the outer peripheral groove of the poppet 60 and the inner periphery of the liquid piston 52 and further between the inner peripheral groove of the piston guide 51. The poppet 60 extends to the center of the coil spring 53 in the lower end side region.

泡吐出器１０は、頭部４０の上下の往復動に連動して液室Ｌ内を上下動するピストンガイド５１及び液ピストン５２を有し、ポペット６０の下端バルブ６２がピストンガイド５１及び液ピストン５２の上動に連動して弁座３４から離れ、かつ液ピストン５２の上動により拡張される液室Ｌに容器本体１の内容液を吸入し、ポペット６０の下端バルブ６２がピストンガイド５１及び液ピストン５２の下動に連動して弁座３４に接し、かつ液ピストン５２の下動により収縮される液室Ｌの内容液を液吐出路５４経由で弁座５１Ａと離れて開かれたボール弁５５から後述する泡生成部８０に吐出する。   The foam discharger 10 has a piston guide 51 and a liquid piston 52 that move up and down in the liquid chamber L in conjunction with the vertical reciprocation of the head 40, and the lower end valve 62 of the poppet 60 is connected to the piston guide 51 and the liquid piston. The liquid in the container body 1 is sucked into the liquid chamber L which is separated from the valve seat 34 in conjunction with the upward movement of the liquid 52 and expanded by the upward movement of the liquid piston 52, and the lower end valve 62 of the poppet 60 is connected to the piston guide 51 and A ball opened in contact with the valve seat 34 in conjunction with the downward movement of the liquid piston 52 and separated from the valve seat 51A via the liquid discharge path 54 for the liquid in the liquid chamber L contracted by the downward movement of the liquid piston 52. It discharges from the valve | bulb 55 to the foam production | generation part 80 mentioned later.

即ち、泡吐出器１０は、頭部４０の上下の往復動に連動して液室Ｌ内を上下動する液ピストン５２を有し、頭部４０が上動する吸入行程で液ピストン５２の上動により拡張される液室Ｌに容器本体１の抗菌性のある内容液を吸入し、頭部４０が押込下動される吐出行程で液ピストン５２の下動により収縮される液室Ｌの内容液を後述する泡生成部８０に吐出する。   That is, the foam discharger 10 has a liquid piston 52 that moves up and down in the liquid chamber L in conjunction with the up and down reciprocation of the head 40, and the top of the liquid piston 52 in the suction stroke in which the head 40 moves up. The liquid chamber L that is expanded by movement sucks the antibacterial content liquid of the container body 1, and the content of the liquid chamber L is contracted by the downward movement of the liquid piston 52 in the discharge stroke in which the head 40 is pushed down. The liquid is discharged to a foam generation unit 80 described later.

泡吐出器１０は、ピストンガイド５１の外周にエアピストン７０の中空筒部７０Ａを遊挿し、エアピストン７０の外周ピストン部７０Ｂをシリンダ３０の大径部３０Ａの内壁に摺動自在に挿入する。本実施例では、頭部４０のステム４１において後述する空気吸入路７１を環状形成するための内外筒４１Ａ、４１Ｂの下端段差状内周孔にエアピストン７０の筒部７０Ａの上端部に設けた内外筒を挿入し、頭部４０を図１の初期状態から僅かに下動させたときに、内外筒４１Ａ、４１Ｂの内周孔の段差面がエアピストン７０の内外筒の上端面に突き当たる一定の時間差の後、頭部４０（ピストンガイド５１、液ピストン５２も一体）の下動によりエアピストン７０も下動させる。従って、エアピストン７０はピストンガイド５１の外周に沿って僅かに上下相対移動可能にし、それらの下端間に後述する空気排出口７３Ａを形成可能にする（図２）。   The bubble discharger 10 loosely inserts the hollow cylindrical portion 70 </ b> A of the air piston 70 into the outer periphery of the piston guide 51, and slidably inserts the outer peripheral piston portion 70 </ b> B of the air piston 70 into the inner wall of the large diameter portion 30 </ b> A of the cylinder 30. In this embodiment, the lower end stepped inner peripheral holes of the inner and outer cylinders 41A and 41B for forming an air suction passage 71 described later in the stem 41 of the head 40 are provided at the upper end of the cylinder part 70A of the air piston 70. When the inner and outer cylinders are inserted and the head 40 is slightly moved downward from the initial state of FIG. 1, the step surface of the inner peripheral hole of the inner and outer cylinders 41A and 41B is in contact with the upper end surface of the inner and outer cylinders of the air piston 70 After that, the air piston 70 is also moved downward by the downward movement of the head 40 (the piston guide 51 and the liquid piston 52 are also integrated). Therefore, the air piston 70 is slightly movable up and down along the outer periphery of the piston guide 51, and an air discharge port 73A described later can be formed between the lower ends thereof (FIG. 2).

泡吐出器１０は、頭部４０のステム４１内に空気吸入路７１を延在し、空気吸入路７１の外気取り込み口７１Ａをステム４１の外面における頭部４０の上端寄りに開口し、空気吸入路７１をエアピストン７０のピストン部７０Ｂの端面に設けた孔７１Ｂ、筒部７０Ａの外周に固定した吸入チェック弁７２を介して空気室Ａに連通可能にする。   The foam discharger 10 has an air suction path 71 extending into the stem 41 of the head 40, and an outside air intake port 71 </ b> A of the air suction path 71 is opened near the upper end of the head 40 on the outer surface of the stem 41. The passage 71 can be communicated with the air chamber A through a hole 71B provided in the end face of the piston portion 70B of the air piston 70 and a suction check valve 72 fixed to the outer periphery of the cylindrical portion 70A.

泡吐出器１０は、ピストンガイド５１の外周溝とエアピストン７０の筒部７０Ａの内周との間から、更にピストンガイド５１の外周とステム４１の内周溝との間に連続する上下に続く空気排出路７３を設け、ピストンガイド５１の下端とエアピストン７０の下端とが空気排出口７３Ａを開閉する開閉弁７４を形成する。開閉弁７４は、頭部４０の下動時に頭部４０とともに下動するピストンガイド５１の下端をエアピストン７０の下端から離隔させてそれらの下端間に空気排出口７３Ａを開き（図３）、頭部４０の上動時に該頭部４０とともに上動するピストンガイド５１の下端フランジ部５１Ｂをエアピストン７０の下端に下から衝合させてそれらの下端間の空気排出口７３Ａを閉じる（図４）。   The foam discharger 10 continues from the space between the outer peripheral groove of the piston guide 51 and the inner periphery of the cylindrical portion 70 </ b> A of the air piston 70 to the top and bottom continuous between the outer periphery of the piston guide 51 and the inner peripheral groove of the stem 41. An air discharge path 73 is provided, and the lower end of the piston guide 51 and the lower end of the air piston 70 form an open / close valve 74 that opens and closes the air discharge port 73A. The on-off valve 74 separates the lower end of the piston guide 51 that moves downward together with the head 40 when the head 40 is moved downward from the lower end of the air piston 70 and opens the air discharge port 73A between the lower ends (FIG. 3). The lower end flange portion 51B of the piston guide 51 that moves up together with the head portion 40 when the head portion 40 moves up is brought into contact with the lower end of the air piston 70 from below to close the air discharge port 73A between the lower ends (FIG. 4). ).

尚、頭部４０は、筒状カバー７５を吊下げ、カバー７５によりステム４１及びキャップ２０の筒部２０Ｂの上領域を囲み、カバー７５の下端部によりキャップ２０の筒部２０Ｂまわりに微小間隙を形成する。カバー７５は外気取り込み口７１Ａへの外水の浸入を困難にする。   The head 40 suspends the cylindrical cover 75, surrounds the upper region of the stem 41 and the cylindrical portion 20 </ b> B of the cap 20 with the cover 75, and forms a minute gap around the cylindrical portion 20 </ b> B of the cap 20 with the lower end of the cover 75. Form. The cover 75 makes it difficult for the outside water to enter the outside air intake port 71A.

即ち、泡吐出器１０は、頭部４０の上下の往復動に連動して空気室Ａ内を上下動するエアピストン７０を有し、頭部４０が上動する吸入行程でエアピストン７０の上動により拡張される空気室Ａに外部の空気を吸入し、頭部４０が押込下動される吐出行程でエアピストン７０の下動により収縮される空気室Ａの空気を後述する泡生成部８０に排出する。   That is, the foam discharger 10 has an air piston 70 that moves up and down in the air chamber A in conjunction with the up and down reciprocation of the head 40, and the air piston 70 moves upward in the suction stroke in which the head 40 moves up. External air is sucked into the air chamber A that is expanded by the movement, and the air in the air chamber A that is contracted by the downward movement of the air piston 70 in the discharge stroke in which the head 40 is pushed down and moved is a foam generation unit 80 that will be described later. To discharge.

泡吐出器１０は、頭部４０の吐出口４２に泡生成部８０を備える。泡生成部８０は、液吐出路５４と空気排出路７３の会合領域（ボール弁５５の直上部）に設けたジェットリング８１により空気と内容液とを混合発泡し、この発泡された内容液をジェットリング８１の上側に配置したメッシュリング８２に貼ったメッシュ８２Ａを通すことにより細かな泡を生成し、吐出口４２から吐出可能にする。   The foam discharger 10 includes a foam generation unit 80 at the discharge port 42 of the head 40. The foam generation unit 80 mixes and foams the air and the content liquid by the jet ring 81 provided in the meeting area of the liquid discharge path 54 and the air discharge path 73 (immediately above the ball valve 55). Fine bubbles are generated by passing the mesh 82A attached to the mesh ring 82 disposed on the upper side of the jet ring 81, and can be discharged from the discharge port 42.

泡吐出器１０は、液室Ｌが空気室Ａの底部より下方に延在し、空気室Ａと液室Ｌを液ピストン５２の外周ピストン部５２Ｂにより区画している。従って、空気室Ａの底部は液ピストン５２の外周ピストン部５２Ｂにより画定される。液ピストン５２の上下動により、空気室Ａの範囲はシリンダ３０の大径部３０Ａの内壁から、ピストンガイド５１を中心軸としてピストンガイド５１に向かうシリンダ３０の下り勾配の円錐面Ｂ〜シリンダ３０の小径部３０Ｂの内壁に渡るものになる。   In the bubble discharger 10, the liquid chamber L extends below the bottom of the air chamber A, and the air chamber A and the liquid chamber L are partitioned by the outer peripheral piston portion 52 </ b> B of the liquid piston 52. Therefore, the bottom of the air chamber A is defined by the outer peripheral piston portion 52 </ b> B of the liquid piston 52. Due to the vertical movement of the liquid piston 52, the air chamber A ranges from the inner wall of the large-diameter portion 30A of the cylinder 30 toward the piston guide 51 with the piston guide 51 as the central axis. It extends over the inner wall of the small diameter portion 30B.

そして、泡吐出器１０は、シリンダ３０の大径部３０Ａが形成する空気室Ａへの水の滞留を防止するため、空気室Ａからの空気排出口７３Ａを空気室Ａの底部近傍に設ける。更に、空気室Ａの底部を空気排出口７３Ａに向かって下り勾配をなすものとする。本実施例では、空気室Ａの空気を排出開始するエアピストン７０の下動開始時に（図２）、ピストンガイド５１の下端とエアピストン７０の下端とが形成する空気排出口７３Ａを空気室Ａの円錐面Ｂ以下のレベルに位置させ、エアピストン７０の下動過程でピストンガイド５１と液ピストン５２がシリンダ３０の小径部３０Ｂに押し込まれるときには、空気排出口７３Ａを空気室Ａの底部による円錐面Ｂ以下で円錐面Ｂに近いレベルから小径部３０Ｂ内の更に下方レベルに位置させるものとする。   The foam discharger 10 is provided with an air discharge port 73A from the air chamber A in the vicinity of the bottom of the air chamber A in order to prevent water from staying in the air chamber A formed by the large diameter portion 30A of the cylinder 30. Further, the bottom of the air chamber A is inclined downward toward the air outlet 73A. In this embodiment, when the air piston 70 starts to start discharging air from the air chamber A (FIG. 2), the air discharge port 73A formed by the lower end of the piston guide 51 and the lower end of the air piston 70 is defined as the air chamber A. When the piston guide 51 and the liquid piston 52 are pushed into the small-diameter portion 30B of the cylinder 30 in the downward movement process of the air piston 70, the air discharge port 73A is conical by the bottom of the air chamber A. It is assumed that it is positioned at a lower level in the small diameter portion 30B from a level close to the conical surface B below the surface B.

尚、泡吐出器１０は、キャップ２０の筒部２０Ｂと頭部４０のステム４１の外筒４１Ｂとの間隙９１Ａ、シリンダ３０が形成する空気室Ａのエアピストン７０に対する上部の外部解放室９１Ｂを容器本体１の内部への空気導入路９１とし、容器本体１の内部への空気導入口９１Ｃをシリンダ３０の大径部３０Ａの上端側に穿設する。泡吐出器１０の初期状態（図１）で、空気導入口９１Ｃはエアピストン７０のピストン部７０Ｂによりカバーされ、空気導入路９１に対し閉じられ、頭部４０の上下の往復動時に、空気導入口９１Ｃはエアピストン７０のピストン部７０Ｂによるカバーが外れて空気導入路９１に対し開口され、かつ空気導入口９１Ｃは、空気室Ａとは常時遮断されている。前述のカバー７５はキャップ２０の筒部２０Ｂまわりに微小間隙を形成するから、空気導入路９１への外水の浸入を困難にする。   The bubble discharger 10 includes a gap 91A between the cylinder portion 20B of the cap 20 and the outer cylinder 41B of the stem 41 of the head 40, and an external release chamber 91B above the air piston 70 of the air chamber A formed by the cylinder 30. An air introduction path 91 to the inside of the container body 1 is formed, and an air introduction port 91 </ b> C to the inside of the container body 1 is formed on the upper end side of the large diameter portion 30 </ b> A of the cylinder 30. In the initial state of the foam discharger 10 (FIG. 1), the air introduction port 91C is covered by the piston portion 70B of the air piston 70, closed with respect to the air introduction path 91, and air is introduced when the head 40 reciprocates up and down. The port 91C is opened to the air introduction path 91 with the cover of the piston portion 70B of the air piston 70 removed, and the air introduction port 91C is always disconnected from the air chamber A. Since the above-described cover 75 forms a minute gap around the cylindrical portion 20 </ b> B of the cap 20, it is difficult for the outside water to enter the air introduction path 91.

泡吐出器１０にあっては、空気の外部取り込み口７１Ａから空気吸入路７１を通って空気室Ａへ外部の空気を吸入する空気吸入経路と、空気導入路９１から空気導入口９１Ｃを通って容器本体１の内部へ外部の空気を導入する空気導入経路を別系統とする。   In the foam discharger 10, an air intake path for sucking external air from the external air intake port 71 </ b> A through the air intake channel 71 to the air chamber A, and an air intake channel 91 through the air intake port 91 </ b> C. An air introduction path for introducing external air into the container body 1 is a separate system.

しかるに、泡吐出器１０にあっては、空気吸入路７１から空気室Ａに取り込まれる外気に随伴して空気室Ａに浸入した水による菌の発生を防止するため、以下の構成を具備する。即ち、液ピストン５２による液室Ｌの収縮端側で、液室Ｌを空気室Ａに連通する液通路１０１を液ピストン５２の外周と液室Ｌの内壁（シリンダ３０の小径部３０Ｂの内壁）の間に形成する。   However, the foam discharger 10 has the following configuration in order to prevent the generation of bacteria due to the water that has entered the air chamber A accompanying the outside air taken into the air chamber A from the air suction passage 71. That is, on the contraction end side of the liquid chamber L by the liquid piston 52, the liquid passage 101 that communicates the liquid chamber L with the air chamber A is connected to the outer periphery of the liquid piston 52 and the inner wall of the liquid chamber L (the inner wall of the small diameter portion 30B of the cylinder 30). Form between.

具体的には、泡吐出器１０が吐出完了／吸入開始状態（図４）にあり、下動側（収縮端）に位置する液ピストン５２の外周ピストン部５２Ｂの全長を超える範囲に対応するシリンダ３０の小径部３０Ｂの内壁の周方向一部にリブ１００Ａを成形する。液ピストン５２が液室Ｌの収縮端側に移動したとき、液ピストン５２のゴム等の弾性材料からなっていて可撓性のある外周ピストン部５２Ｂがリブ１００Ａに乗り上げ、液ピストン５２とシリンダ３０の小径部３０Ｂの内壁との間に隙間状液通路１０１が形成される。これにより、収縮端にある液ピストン５２により加圧された液室Ｌの抗菌性内容液が液通路１０１経由で液ピストン５２の外周ピストン部５２Ｂの上部の空気室Ａの底部に送り込まれる（図４（Ｂ））。   Specifically, the cylinder corresponding to the range in which the foam discharger 10 is in the discharge completion / inhalation start state (FIG. 4) and exceeds the total length of the outer peripheral piston portion 52B of the liquid piston 52 located on the lower movement side (contraction end). The rib 100A is formed on a part of the inner wall of the 30 small diameter portion 30B in the circumferential direction. When the liquid piston 52 moves to the contraction end side of the liquid chamber L, a flexible outer peripheral piston portion 52B made of an elastic material such as rubber of the liquid piston 52 rides on the rib 100A, and the liquid piston 52 and the cylinder 30 A gap-like liquid passage 101 is formed between the inner wall of the small-diameter portion 30B. Thereby, the antibacterial content liquid in the liquid chamber L pressurized by the liquid piston 52 at the contraction end is sent to the bottom of the air chamber A above the outer peripheral piston portion 52B of the liquid piston 52 via the liquid passage 101 (FIG. 4 (B)).

泡吐出器１０は以下の如く動作する。
（動作１）（図２)
(1)図１の初期状態から頭部４０を押すと最初に頭部４０と一体となって、ピストンガイド５１、ピストン５２、ポペット６０が下へ下がる。 The foam dispenser 10 operates as follows.
(Operation 1) (Fig. 2)
(1) When the head 40 is pushed from the initial state of FIG. 1, the piston guide 51, the piston 52, and the poppet 60 are lowered downward integrally with the head 40 first.

(2)ポペット６０の下端バルブ６２がシリンダ３０の小径部３０Ｂの下端側に設けられた弁座３４に当たり（ＩＡ部分）、液室Ｌを閉じる。   (2) The lower end valve 62 of the poppet 60 hits the valve seat 34 provided on the lower end side of the small diameter portion 30B of the cylinder 30 (IA portion), and the liquid chamber L is closed.

(3)エアピストン７０はこの時点では動かないため（頭部４０とエアピストン７０の上端の隙間が狭くなる）（ＩＢ部分）、エアピストン７０の下端とピストンガイド５１の下端の間に隙間ができ、空気室Ａの排出口７３Ａとなる（ＩＣ部分）。   (3) Since the air piston 70 does not move at this point (the gap between the head 40 and the upper end of the air piston 70 becomes narrow) (IB portion), there is a gap between the lower end of the air piston 70 and the lower end of the piston guide 51. It becomes the discharge port 73A of the air chamber A (IC portion).

（動作２）（図３）
(1)頭部４０を更に押すと、頭部４０と一体となって、ピストンガイド５１、ピストン５２、エアピストン７０が下へ下がる。 (Operation 2) (FIG. 3)
(1) When the head 40 is further pushed, the piston guide 51, the piston 52, and the air piston 70 are lowered downward together with the head 40.

(2)空気室Ａ内の空気は空気排出路７３を通り、液室Ｌ内の液は液吐出路５４を通り、泡生成部８０のジェットリング８１の部分で混合され泡となる。泡はメッシュリング８２に貼られたメッシュ８２Ａを通り細かな泡となって頭部４０の吐出口４２から吐出される。   (2) The air in the air chamber A passes through the air discharge path 73, and the liquid in the liquid chamber L passes through the liquid discharge path 54 and is mixed in the jet ring 81 portion of the foam generating unit 80 to become bubbles. The bubbles pass through the mesh 82A attached to the mesh ring 82 and are discharged as fine bubbles from the discharge port 42 of the head 40.

(3)このとき、空気室Ａ内に溜まっていた水も、空気の流れに沿って空気排出路７３を通り、吐出口４２から排出される。   (3) At this time, the water accumulated in the air chamber A is also discharged from the discharge port 42 through the air discharge path 73 along the air flow.

(4)頭部４０を押している途中で、エアピストン７０が塞いでいた空気室Ａの側面の空気導入口９１Ａが開放されるため、空気が容器本体１の内部へ導入される。   (4) While the head 40 is being pushed, the air introduction port 91A on the side surface of the air chamber A that has been closed by the air piston 70 is opened, so that air is introduced into the container body 1.

（動作３）（図４）
(1)頭部４０が押込端に達し、液ピストン５２が収縮端（下動端）に達すると、液ピストン５２の外周ピストン部５２Ｂがリブ１００Ａに乗り上げて液室Ｌを空気室Ａに連通する液通路１０１が形成される。液室Ｌの内容液が液通路１０１経由で空気室Ａの底部に送り込まれる。空気吸入路７１から空気室Ａに取り込まれた外気に随伴して空気室Ａに浸入し、空気室Ａの底部に滞留していた外水に抗菌性内容液が混合することになる。 (Operation 3) (FIG. 4)
(1) When the head 40 reaches the pushing end and the liquid piston 52 reaches the contraction end (downward movement end), the outer peripheral piston portion 52B of the liquid piston 52 rides on the rib 100A and communicates the liquid chamber L with the air chamber A. A liquid passage 101 is formed. The liquid in the liquid chamber L is sent to the bottom of the air chamber A via the liquid passage 101. The antibacterial content liquid is mixed with the outside water that has entered the air chamber A along with the outside air taken into the air chamber A from the air suction passage 71 and stayed at the bottom of the air chamber A.

（動作４）（図４）
(1)頭部４０を押すのをやめて頭部４０から手を離すと、頭部４０と一体となって、ピストンガイド５１、ピストン５２、ポペット６０がコイルばね５３のばね力で上がる。 (Operation 4) (FIG. 4)
(1) When the pressing of the head 40 is stopped and the hand is released from the head 40, the piston guide 51, piston 52, and poppet 60 are lifted by the spring force of the coil spring 53 together with the head 40.

(2)ポペット６０の下端がシリンダ３０の小径部３０Ｂの弁座３４から離れ隙間ができ（IIIＡ部分）、液室Ｌを開く。   (2) The lower end of the poppet 60 is separated from the valve seat 34 of the small diameter portion 30B of the cylinder 30 to form a gap (IIIA portion), and the liquid chamber L is opened.

(3)エアピストン７０はこの時点では動かないため（頭部４０とエアピストン７０の上端の隙間が広くなる）（IIIＢ部分）、エアピストン７０の下端とピストンガイド５１の下端の隙間が閉じ、空気排出口７３Ａが閉じられる（IIIＣ部分）。   (3) Since the air piston 70 does not move at this point (the gap between the head 40 and the upper end of the air piston 70 is widened) (IIIB portion), the gap between the lower end of the air piston 70 and the lower end of the piston guide 51 is closed. The air outlet 73A is closed (IIIC portion).

（動作５）（図５）
(1)頭部４０が更に上昇すると、頭部４０と一体となって、ピストンガイド５１、ピストン５２、エアピストン７０が上昇する。 (Operation 5) (FIG. 5)
(1) When the head 40 further rises, the piston guide 51, the piston 52, and the air piston 70 rise together with the head 40.

(2)空気室Ａ内は負圧となるため、吸入チェック弁７２が開き、空気吸入路７１を通り空気室Ａ内へ空気が吸入される。また、液室Ｌ内も負圧となるため、容器本体１内の内容液がディップチューブ３２を通って液室Ｌへ導入される。   (2) Since the air chamber A has a negative pressure, the suction check valve 72 is opened, and air is sucked into the air chamber A through the air suction path 71. Since the liquid chamber L also has a negative pressure, the content liquid in the container body 1 is introduced into the liquid chamber L through the dip tube 32.

(3)図１の初期状態に戻る。   (3) Return to the initial state of FIG.

本実施例によれば以下の作用効果を奏する。
(a)泡吐出器１０の吐出行程における、頭部４０を押込んだ液ピストン５２による液室Ｌの収縮端側で、液室Ｌを空気室Ａに連通する液通路１０１を液ピストン５２の外周と液室Ｌの内壁の間に形成する。従って、液ピストン５２により加圧された液室Ｌの内容液が空気室Ａの底部に送り込まれる。これにより、空気室Ａに浸入して空気室Ａの底部に滞留していた外水に抗菌性内容液が混合し、外水の菌の繁殖を防止する。 According to the present embodiment, the following operational effects can be obtained.
(a) In the discharge stroke of the bubble discharger 10, the liquid passage 101 that communicates the liquid chamber L with the air chamber A is formed on the contraction end side of the liquid chamber L by the liquid piston 52 that has pushed the head 40. It is formed between the outer periphery and the inner wall of the liquid chamber L. Therefore, the liquid in the liquid chamber L pressurized by the liquid piston 52 is sent to the bottom of the air chamber A. As a result, the antibacterial content liquid is mixed with the outside water that has entered the air chamber A and stayed at the bottom of the air chamber A, thereby preventing the growth of bacteria in the outside water.

(b)次回吐出行程における、頭部４０を押込んだエアピストン７０による空気室Ａの収縮時に、空気室Ａに滞留している上述(a)の抗菌性内容液が混合した水は空気とともに泡生成部８０に排出される。   (b) In the next discharge stroke, when the air chamber A is contracted by the air piston 70 which has pushed the head 40, the water mixed with the antibacterial content liquid (a) staying in the air chamber A is mixed with the air. It is discharged to the bubble generator 80.

(c)抗菌性の液剤を空気室Ａ内に予め装填するものと異なり、吐出行程の度に、容器本体から液室Ｌに吸引される抗菌性内容液を空気室Ａの底部に送り込む。従って、泡吐出器１０が詰め替え用容器本体に繰り返し用いられるときにも、上述(a)、(b)の防菌作用を発揮できる。   (c) Unlike the case in which the antibacterial liquid agent is previously loaded in the air chamber A, the antibacterial content liquid sucked into the liquid chamber L from the container main body is sent to the bottom of the air chamber A at each discharge stroke. Therefore, even when the foam dispenser 10 is repeatedly used for the refill container body, the antibacterial action (a) and (b) described above can be exhibited.

(d)空気室Ａから泡生成部８０への空気の排出口７３Ａが空気室Ａの底部近くに設けられた。従って、エアピストン７０が空気室Ａを収縮して空気室Ａの空気を排出口７３Ａから泡生成部８０に排出するとき、空気室Ａに滞留している前述(a)の抗菌性内容液が混合した水を空気の流れに乗せて排出口７３Ａから吐出口４２の側へ排出し、前述(b)の排水作用を促進できる。   (d) An air outlet 73A from the air chamber A to the bubble generating unit 80 is provided near the bottom of the air chamber A. Therefore, when the air piston 70 contracts the air chamber A and discharges the air in the air chamber A from the discharge port 73A to the bubble generating unit 80, the antibacterial content liquid (a) staying in the air chamber A is present. The mixed water is put on the air flow and discharged from the discharge port 73A to the discharge port 42 side, so that the drainage action of (b) described above can be promoted.

(e)空気室Ａの底部近傍部を空気の排出口７３Ａに向かう下り勾配にしたから、空気室Ａに滞留している前述(a)の抗菌性内容液が混合した水をその底部近くの排出口７３Ａの周辺に集め、上述(d)による排水作用の一層の確実を図ることができる。   (e) Since the vicinity of the bottom of the air chamber A has a downward slope toward the air outlet 73A, the water mixed with the antibacterial content liquid (a) staying in the air chamber A is near the bottom. Collecting around the discharge port 73A, it is possible to further ensure the drainage action by the above (d).

(f)容器本体１の内容液が防腐剤を含むことにより、内容液の抗菌性を高め、前述(a)の防菌作用の確実を図ることができる。   (f) When the content liquid of the container main body 1 contains a preservative, the antibacterial property of the content liquid can be enhanced and the antibacterial action (a) described above can be ensured.

（実施例２）（図６、図７）
実施例２は、実施例１の構造に加え、エアピストン７０による空気室Ａの収縮端側で、空気室Ａを、該空気室Ａのエアピストン７０に対する上部に形成してある外部解放室９１Ｂに連通する空気通路２０１を空気ピストン７０の外周と空気室Ａの内壁（シリンダ３０の大径部３０Ａの内壁）との間に形成したことにある。 Example 2 (FIGS. 6 and 7)
In the second embodiment, in addition to the structure of the first embodiment, on the contraction end side of the air chamber A by the air piston 70, the air chamber A is formed in the upper portion of the air chamber A with respect to the air piston 70. Is formed between the outer periphery of the air piston 70 and the inner wall of the air chamber A (the inner wall of the large-diameter portion 30A of the cylinder 30).

具体的には、泡吐出器１０が吐出完了／吸入開始状態（図７）にあり、下動端（収縮端）に位置するエアピストン７０の外周ピストン部７０Ｂの全長を超える範囲に対応するシリンダ３０の大径部３０Ａの内壁の周方向一部にリブ２００Ａ（凸部、溝部でも可）を成形する。エアピストン７０が空気室Ａの収縮端側に移動したとき、エアピストン７０の外周ピストン部７０Ｂがリブ２００Ａに乗り上げ、エアピストン７０とシリンダ３０の大径部３０Ａの内壁との間に隙間状空気通路２０１が形成される（図７（Ｃ））。   Specifically, the cylinder corresponding to the range in which the foam discharger 10 is in the discharge completion / inhalation start state (FIG. 7) and exceeds the total length of the outer peripheral piston portion 70B of the air piston 70 located at the lower moving end (contracted end). A rib 200A (a convex portion or a groove portion is also acceptable) is formed on a part of the inner wall of the 30 large diameter portion 30A in the circumferential direction. When the air piston 70 moves to the contraction end side of the air chamber A, the outer peripheral piston portion 70B of the air piston 70 rides on the rib 200A, and a gap-like air is formed between the air piston 70 and the inner wall of the large diameter portion 30A of the cylinder 30. A passage 201 is formed (FIG. 7C).

従って、実施例２によれば、実施例１の前述(a)〜(f)の作用効果に加え、以下の作用効果を奏する。   Therefore, according to the second embodiment, in addition to the operational effects (a) to (f) of the first embodiment, the following operational effects are achieved.

実施例１の前述(a)の吐出行程において液ピストン５２が液室Ｌの収縮端に達するタイミングは、エアピストン７２が空気室Ａの収縮端に達するタイミングでもある。このとき、空気室Ａのエアピストン７２に対する上部に外部解放室９１Ｂが形成され、空気室Ａを外部解放室９１Ｂに連通する空気通路２０１がエアピストン７２の外周と空気室Ａの内壁の間に形成される。従って、液室Ｌと空気室Ａとが前述(a)の液通路１０１により連通する状態で、液ピストン５２により加圧された液室Ｌの圧力が外部解放室９１Ｂに連通している空気室Ａの圧力に対してより高圧になり、液室Ｌの内容液が空気室Ａの底部にスムースに送り込まれ、前述(a)の防菌作用を促進できる。   The timing at which the liquid piston 52 reaches the contraction end of the liquid chamber L in the discharge stroke (a) of the first embodiment is also the timing at which the air piston 72 reaches the contraction end of the air chamber A. At this time, an external release chamber 91B is formed in the upper part of the air chamber A with respect to the air piston 72, and an air passage 201 that connects the air chamber A to the external release chamber 91B is between the outer periphery of the air piston 72 and the inner wall of the air chamber A. It is formed. Therefore, the air chamber in which the pressure of the liquid chamber L pressurized by the liquid piston 52 communicates with the external release chamber 91B in a state where the liquid chamber L and the air chamber A communicate with each other through the liquid passage 101 of (a). The pressure in the liquid chamber L becomes higher than the pressure in A, and the liquid in the liquid chamber L is smoothly fed into the bottom of the air chamber A, so that the antibacterial action (a) described above can be promoted.

（実施例３）（図８、図９）
実施例３が実施例１と異なる点は、液ピストン５２による液室Ｌの収縮端側で、液室Ｌを空気室Ａに連通する液通路１０１を液ピストン５２の外周と液室Ｌの内壁（シリンダ３０の小径部３０Ｂの内壁）の間に形成するための具体的構造として、リブ１００Ａに代わる凸部１００Ｂを設けたことにある。即ち、泡吐出器１０が吐出完了／吸入開始状態（図９）にあり、下動側（収縮端）に位置する液ピストン５２の外周ピストン部５２Ｂに対応するシリンダ３０の小径部３０Ｂの内壁の周方向一部に凸部１００Ｂを成形する。液ピストン５２が液室Ｌの収縮端側に移動したとき、液ピストン５２のゴム等の弾性材料からなっていて可撓性のある外周ピストン部５２Ｂが凸部１００Ｂに乗り上げ、液ピストン５２とシリンダ３０の小径部３０Ｂの内壁との間に隙間状液通路１０１が形成される。これにより、収縮端にある液ピストン５２により加圧された液室Ｌの抗菌性内容液が液通路１０１経由で液ピストン５２の外周ピストン部５２Ｂの上部の空気室Ａの底部に送り込まれ（図９（Ｂ））、実施例１におけると同様に、空気室Ａに浸入した水による菌の発生を防止する。 Example 3 (FIGS. 8 and 9)
The third embodiment is different from the first embodiment in that the liquid piston 52 is connected to the contraction end side of the liquid chamber L, and the liquid passage 101 that connects the liquid chamber L to the air chamber A is connected to the outer periphery of the liquid piston 52 and the inner wall of the liquid chamber L. As a specific structure for forming between (the inner wall of the small diameter portion 30B of the cylinder 30), a convex portion 100B in place of the rib 100A is provided. That is, the foam discharger 10 is in the discharge completion / inhalation start state (FIG. 9), and the inner wall of the small diameter part 30B of the cylinder 30 corresponding to the outer peripheral piston part 52B of the liquid piston 52 located on the lower movement side (contraction end). The convex part 100B is formed in a part in the circumferential direction. When the liquid piston 52 moves to the contraction end side of the liquid chamber L, a flexible outer peripheral piston portion 52B made of an elastic material such as rubber of the liquid piston 52 rides on the convex portion 100B, and the liquid piston 52 and the cylinder A gap-like liquid passage 101 is formed between the inner wall of the 30 small-diameter portions 30B. Thereby, the antibacterial content liquid in the liquid chamber L pressurized by the liquid piston 52 at the contracted end is sent to the bottom of the air chamber A above the outer peripheral piston portion 52B of the liquid piston 52 via the liquid passage 101 (FIG. 9 (B)), in the same manner as in Example 1, the generation of bacteria due to water entering the air chamber A is prevented.

（実施例４）（図１０、図１１）
実施例４が実施例１と異なる点は、液ピストン５２による液室Ｌの収縮端側で、液室Ｌを空気室Ａに連通する液通路１０１を液ピストン５２の外周と液室Ｌの内壁（シリンダ３０の小径部３０Ｂの内壁）の間に形成するための具体的構造として、リブ１００Ａに代わる溝部１００Ｃを設けたことにある。即ち、泡吐出器１０が吐出完了／吸入開始状態（図１１）にあり、下動側（収縮端）に位置する液ピストン５２の外周ピストン部５２Ｂに対応するシリンダ３０の小径部３０Ｂの内壁の周方向一部に溝部１００Ｃを成形する。液ピストン５２が液室Ｌの収縮端側に移動したとき、液ピストン５２の外周ピストン部５２Ｂが溝部１００Ｃの上に位置付けられ、液ピストン５２とシリンダ３０の小径部３０Ｂの内壁（溝部１００Ｃ）との間に隙間状液通路１０１が形成される。これにより、収縮端にある液ピストン５２により加圧された液室Ｌの抗菌性内容液が液通路１０１経由で液ピストン５２の外周ピストン部５２Ｂの上部の空気室Ａの底部に送り込まれ（図１１（Ｂ））、実施例１におけると同様に、空気室Ａに浸入した水による菌の発生を防止する。 Example 4 (FIGS. 10 and 11)
The fourth embodiment is different from the first embodiment in that the liquid piston 52 is connected to the contraction end side of the liquid chamber L, and the liquid passage 101 that communicates the liquid chamber L with the air chamber A is connected to the outer periphery of the liquid piston 52 and the inner wall of the liquid chamber L. As a specific structure for forming between (the inner wall of the small diameter portion 30B of the cylinder 30), a groove portion 100C is provided instead of the rib 100A. That is, the foam discharger 10 is in the discharge completion / inhalation start state (FIG. 11), and the inner wall of the small diameter portion 30B of the cylinder 30 corresponding to the outer peripheral piston portion 52B of the liquid piston 52 located on the lower movement side (contracted end). The groove part 100C is formed in a part in the circumferential direction. When the liquid piston 52 moves to the contraction end side of the liquid chamber L, the outer peripheral piston portion 52B of the liquid piston 52 is positioned on the groove portion 100C, and the liquid piston 52 and the inner wall (groove portion 100C) of the small diameter portion 30B of the cylinder 30 A gap-like liquid passage 101 is formed between the two. Thereby, the antibacterial content liquid in the liquid chamber L pressurized by the liquid piston 52 at the contracted end is sent to the bottom of the air chamber A above the outer peripheral piston portion 52B of the liquid piston 52 via the liquid passage 101 (FIG. 11 (B)), in the same manner as in Example 1, the generation of bacteria due to water entering the air chamber A is prevented.

尚、本実施形態（実施例１〜４）においては、泡吐出器１０は、空気吸入路７１と空気導入路９１を環状形成するために内外筒４１Ａ、４１Ｂの２つの筒によりステム４１を形成しているが、この外筒４１Ｂを形成せず、内筒４１Ａをステム４１とし、内筒４１Ａの下方外周面とキャップ２０の筒部２０Ｂの内周面とを近接配置し、この内筒４１Ａと筒部２０Ｂの間のみを空気吸入路７１とすることもできる。この場合、一つの空気吸入路７１が孔７１Ｂに連続しているとともに、外部解放室９１Ｂへも連通可能としており、頭部４０が上下動したときには、空気吸入路７１から外部解放室９１Ｂ、空気導入口９１Ｃを経由して容器本体内へ連通可能とし、頭部４０が上動したときに孔７１Ｂからチェック弁８２を経由して空気室Ａへ連通可能とする。   In the present embodiment (Examples 1 to 4), the foam discharger 10 forms the stem 41 by two cylinders of the inner and outer cylinders 41A and 41B in order to form the air suction path 71 and the air introduction path 91 in an annular shape. However, the outer cylinder 41B is not formed, the inner cylinder 41A is used as the stem 41, and the lower outer peripheral surface of the inner cylinder 41A and the inner peripheral surface of the cylindrical portion 20B of the cap 20 are arranged close to each other. It is also possible to use the air suction path 71 only between the cylinder portion 20B and the cylinder portion 20B. In this case, one air suction path 71 is continuous with the hole 71B and can communicate with the external release chamber 91B. When the head 40 moves up and down, the air release path 71 and the external release chamber 91B, It is possible to communicate with the inside of the container body via the introduction port 91C, and to communicate with the air chamber A via the check valve 82 from the hole 71B when the head 40 moves up.

図１は実施例１の泡吐出器の初期状態を示す断面図である。FIG. 1 is a cross-sectional view showing an initial state of the foam discharger according to the first embodiment. 図２は泡吐出器の吐出開始状態を示す断面図である。FIG. 2 is a sectional view showing a discharge start state of the foam discharger. 図３は泡吐出器の吐出中間状態を示す断面図である。FIG. 3 is a cross-sectional view showing an intermediate discharge state of the foam discharger. 図４は泡吐出器の吐出完了／吸入開始状態を示す断面図である。FIG. 4 is a cross-sectional view showing a discharge completion / inhalation start state of the foam discharger. 図５は泡吐出器の吸入中間状態を示す断面図である。FIG. 5 is a cross-sectional view showing an intermediate suction state of the foam discharger. 図６は実施例２の泡吐出器の初期状態を示す断面図である。FIG. 6 is a cross-sectional view showing an initial state of the foam discharger according to the second embodiment. 図７は泡吐出器の吐出完了／吸入開始状態を示す断面図である。FIG. 7 is a cross-sectional view showing a discharge completion / inhalation start state of the foam discharger. 図８は実施例３の泡吐出器の初期状態を示す断面図である。FIG. 8 is a cross-sectional view showing an initial state of the foam discharger according to the third embodiment. 図９は泡吐出器の吐出完了／吸入開始状態を示す断面図である。FIG. 9 is a cross-sectional view showing a discharge completion / inhalation start state of the foam discharger. 図１０は実施例４の泡吐出器の初期状態を示す断面図である。FIG. 10 is a cross-sectional view showing an initial state of the foam discharger according to the fourth embodiment. 図１１は泡吐出器の吐出完了／吸入開始状態を示す断面図である。FIG. 11 is a cross-sectional view showing a discharge completion / inhalation start state of the foam discharger.

符号の説明Explanation of symbols

１ 容器本体
１Ａ 口部
１０ 泡吐出器
２０ キャップ
３０ シリンダ
３０Ａ 大径部
３０Ｂ 小径部
４０ 頭部
４２ 吐出口
５１ ピストンガイド
５２ 液ピストン
５３ コイルばね
５４ 液吐出路
６０ ポペット
７０ エアピストン
７１ 空気吸入路
７３ 空気排出路
７３Ａ 空気排出口
７４ 開閉弁
８０ 泡生成部
９１ 空気導入路
９１Ｂ 外部解放室
１００Ａ リブ
１００Ｂ 凸部
１００Ｃ 溝部
１０１ 液通路
２００Ａ リブ
２０１ 空気通路
Ａ 空気室
Ｂ 底部
Ｌ 液室 DESCRIPTION OF SYMBOLS 1 Container body 1A Mouth part 10 Foam discharger 20 Cap 30 Cylinder 30A Large diameter part 30B Small diameter part 40 Head 42 Discharge port 51 Piston guide 52 Liquid piston 53 Coil spring 54 Liquid discharge path 60 Poppet 70 Air piston 71 Air suction path 73 Air discharge path 73A Air discharge port 74 On-off valve 80 Foam generation part 91 Air introduction path 91B External release chamber 100A Rib 100B Protrusion part 100C Groove part 101 Liquid passage 200A Rib 201 Air passage A Air chamber B Bottom L Liquid chamber

Claims (2)

容器本体の口部に固定したキャップに対し往復動可能に設けられる頭部を有し、頭部を往復動させることにより、容積可変の液室から内容液を、容積可変の空気室から空気を、それぞれ泡生成部に送り、この内容液と空気を泡生成部で混合発泡させ、生成した泡を頭部に設けた吐出口から吐出するに際し、
頭部の往復動に連動して液室内を往復動する液ピストンを設け、液ピストンにより拡張される液室に容器本体から抗菌性のある内容液を吸入し、液ピストンにより収縮される液室の内容液を泡生成部に吐出し、
頭部の往復動に連動して空気室内を往復動するエアピストンを設け、エアピストンにより拡張される空気室に容器外部の空気を吸入し、エアピストンにより収縮される空気室の空気を泡生成部に排出する泡吐出器であって、
液室は空気室の底部より下方に延在し、空気室と液室を液ピストンにより区画し、
空気室の底部に空気の排出口を設けるとともに、空気室の底部近傍を空気の排出口に向かう下り勾配とし、
液ピストンを液室の収縮端側に押し込んだときに、液室と空気室とを連通させる液通路を液ピストンの外周と液室の内壁の間に形成する泡吐出器。 It has a head that can be reciprocated with respect to a cap fixed to the mouth of the container body. By reciprocating the head, the liquid content can be changed from the volume variable liquid chamber and the air from the volume variable air chamber. In addition, each foam is sent to the foam generation unit, this content liquid and air are mixed and foamed in the foam generation unit, and when the generated foam is discharged from the discharge port provided in the head,
A liquid piston that reciprocates in the liquid chamber in conjunction with the reciprocating movement of the head, in which antibacterial content liquid is drawn from the container body into the liquid chamber expanded by the liquid piston, and contracted by the liquid piston Is discharged into the foam generator,
An air piston that reciprocates in the air chamber in conjunction with the reciprocating motion of the head is provided. Air outside the container is sucked into the air chamber expanded by the air piston, and bubbles are generated in the air chamber contracted by the air piston. A foam dispenser that discharges to the section,
The liquid chamber extends downward from the bottom of the air chamber, and the air chamber and the liquid chamber are partitioned by a liquid piston,
While providing an air outlet at the bottom of the air chamber, the vicinity of the bottom of the air chamber is a downward slope toward the air outlet,
A foam discharger that forms a liquid passage between the outer periphery of the liquid piston and the inner wall of the liquid chamber when the liquid piston is pushed toward the contraction end of the liquid chamber. 前記エアピストンを空気室の収縮端側に押し込んだときに、空気室と空気室のエアピストンに対する上部に形成された外部解放室とを連通させる空気通路をエアピストンの外周と空気室の内壁の間に形成する請求項１に記載の泡吐出器。   When the air piston is pushed into the contraction end side of the air chamber, an air passage that connects the air chamber and an external release chamber formed at an upper portion of the air chamber with respect to the air piston is formed on the outer periphery of the air piston and the inner wall of the air chamber. The foam dispenser according to claim 1, which is formed in between.
JP2008019832A 2008-01-30 2008-01-30 Foam dispenser Active JP5130068B2 (en)

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JP5677872B2 (en) * 2011-02-28 2015-02-25 株式会社吉野工業所 Discharge pump
JP5802475B2 (en) * 2011-08-08 2015-10-28 花王株式会社 Foam dispenser
JP6338981B2 (en) * 2014-09-08 2018-06-06 大和製罐株式会社 Pump dispenser

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JP2584423Y2 (en) * 1993-01-20 1998-11-05 株式会社三谷バルブ Foam spouting container
JP4502188B2 (en) * 2004-05-31 2010-07-14 株式会社吉野工業所 Foam spout container with trigger

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