JP2009179350A

JP2009179350A - Bubble delivering instrument

Info

Publication number: JP2009179350A
Application number: JP2008019836A
Authority: JP
Inventors: Jin Akasaka; 神赤坂; Rie Mikami; 理恵三上
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2008-01-30
Filing date: 2008-01-30
Publication date: 2009-08-13
Anticipated expiration: 2028-01-30
Also published as: JP5114230B2

Abstract

PROBLEM TO BE SOLVED: To prevent bacilli from growing caused by water intruded into an external air intake room on the back side of an air piston in a bubble delivering instrument. SOLUTION: In the bubble delivering instrument 10, the external air intake room 71 is provided on the back side to an air room A of the air piston 70, and an air sucking opening 72A for communicating the external air intake room 71 with the air room A is provided in the air piston 70. A suction checking valve 72 which opens and closes the air sucking opening 72A provided in the air piston 70 and allows to suck the air to the air room A from the external air intake room 71, is provided, and the air sucking opening 72A provided in the air piston 70 is provided at the lowermost part of the bottom part 71B forming a recessed shape of the external air intake room 71 which the air piston 70 forms. COPYRIGHT: (C)2009,JPO&INPIT

Description

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

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空気室を拡縮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、エアピストンの空気室に対する裏側に外気取り込み室を設けるとともに、外気取り込み室と空気室を連通する空気の吸入口をエアピストンに設け、エアピストンに設けた空気の吸入口を開閉して外気取り込み室から空気室への空気の吸入を許容する吸入チェック弁を設けており、頭部とキャップの間の微小隙間を外気取り込み経路としている。
特開2005-193972 特開2004-121898 As described in Patent Documents 1 and 2, the foam discharger has a head portion that can be reciprocated with respect to a cap fixed to the mouth portion of the container body, and the volume can be changed by reciprocating the head portion. The content liquid from the liquid chamber and the air from the variable volume air chamber are respectively 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. In this case, an air piston that expands and contracts the air chamber in conjunction with the reciprocating motion of the head is provided, the outside air is sucked into the air chamber expanded by the air piston, and the air in the air chamber contracted by the air piston is bubbled. Some are discharged to the generator. In these bubble dischargers, an air intake chamber is provided on the back side of the air chamber of the air piston, an air intake port that communicates the external air intake chamber and the air chamber is provided in the air piston, and an air intake port provided in the air piston is provided. An intake check valve that allows the intake of air from the outside air intake chamber to the air chamber by opening and closing is provided, and a minute gap between the head and the cap serves as an outside air intake path.
JP2005-193972 JP2004-121898

特許文献１、２に記載の泡吐出器では、外部の空気を外気取り込み経路から外気取り込み室に取り込むときに、外水も吸引されて外気取り込み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 outside air taking-in chamber from the outside air taking-in path, outside water may be sucked and enter the outside-air taking-in chamber.

特許文献１に記載の泡吐出器は、頭部のスカート部の天面外径を、スカート部とキャップの外周との間の外気取り込み室への外気取り込み口を覆う傘状に張り出し、外気取り込み室への外水の浸入を防止しようとしている。 The foam dispenser described in Patent Document 1 projects the outside diameter of the top surface of the skirt portion of the head into an umbrella shape covering the outside air intake port into the outside air intake chamber between the skirt portion and the outer periphery of the cap. Trying to prevent outside water from entering the room.

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外気取り込み室への外気取り込み口を狭小にし、外気取り込み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 annular convex portion is formed into an outside air intake chamber formed between the outer periphery of the cap. The outside air intake port is narrowed to prevent outside water from entering the outside air intake chamber.

しかしながら、特許文献１、２に記載の泡吐出器が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用いられるときには、外気取り込み室への外水の浸入を十分には防止できない。そして、特許文献１、２に記載の泡吐出器では、エアピストンが形成する外気取り込み室の底部が概ね凸状をなし、エアピストンの凸状の中央高所に空気の吸入口を設け、エアピストンの凸状の中央高所とピストン部の外周リング部との間を環状凹部としているため、外気取り込み室に一端浸入した外水はエアピストンの底部の環状凹部に滞留して排出されず、菌等を発生するおそれがある。 However, when the foam discharge device described in Patent Documents 1 and 2 is used in an environment where the container body is brought down or the outer periphery of the container body is washed, for example, the intrusion of outside water into the outside air intake chamber cannot be sufficiently prevented. In the foam discharge device described in Patent Documents 1 and 2, the bottom of the outside air intake chamber formed by the air piston has a generally convex shape, and an air suction port is provided at the convex central height of the air piston. Since the space between the convex center height of the piston and the outer ring portion of the piston portion is an annular recess, the outside water that has entered one end into the outside air intake chamber stays in the annular recess at the bottom of the air piston and is not discharged. May cause bacteria.

本発明の課題は、泡吐出器において、エアピストンの裏側の外気取り込み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 the generation | occurrence | production of the microbe by the water which permeated the external air intake chamber of the back side of an air piston in a 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空気室を拡縮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泡吐出器であって、エアピストンの空気室に対する裏側に外気取り込み室を設けるとともに、外気取り込み室と空気室を連通する空気の吸入口をエアピストンに設け、エアピストンに設けた空気の吸入口を開閉して外気取り込み室から空気室への空気の吸入を許容する吸入チェック弁を設け、エアピストンに設ける空気の吸入口をエアピストンが形成する外気取り込み室の凹状をなす底部の最下位部に設けたものである。 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. An air piston that expands and contracts the air chamber in conjunction with the air piston, sucks external air into the air chamber expanded by the air piston, and discharges the air in the air chamber contracted by the air piston to the bubble generating unit An air intake chamber is provided on the back side of the air chamber of the air piston, an air intake port that communicates the outside air intake chamber and the air chamber is provided in the air piston, and an air intake port provided in the air piston is opened and closed. Outside An air intake check valve that allows air to be sucked from the air chamber to the air chamber is provided, and an air intake port provided in the air piston is provided at the lowest part of the bottom of the outside air intake chamber formed by the air piston. is there.

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。 As shown in FIG. 1, the foam discharger 10 fixes the mounting portion 20 A of the cap 20 to the mouth portion 1 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と後述するポペット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 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〜ピストンガイド５１、液ピストン５２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。ポペット６０の下端バルブ６２は液ピストン５２により収縮されて加圧される液室Ｌの液圧により下端側弁座３４（小径部３０Ｂの下端に形成された縮径領域）に押圧されて閉じ状態とされる。液室Ｌが最大拡張端にある図１の初期状態で、コイルばね５３はポペット６０が上方へ移動しない程度に下端バルブ６２の上端面に接している。 The foam discharger 10 has a poppet 60 extending along the small diameter portion 30 B to the piston guide 51 and the liquid piston 52 of the cylinder 30, and the upper end 61 of the poppet 60 is located on the inner periphery of the piston guide 51 and the liquid piston 52. The lower end valve 62 of the poppet 60 is disposed in close contact with the lower end side valve seat 34 of the small diameter portion 30 B, and the liquid chamber L is opened and closed with respect to the inside of the container body 1. 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. The lower end valve 62 of the poppet 60 is pressed and closed by the lower end side valve seat 34 (the reduced diameter region formed at the lower end of the small diameter portion 30B) by the hydraulic pressure of the liquid chamber L which is contracted and pressurized by the liquid piston 52. It is said. In the initial state of FIG. 1 in which the liquid chamber L is at the maximum extended end, the coil spring 53 is in contact with the upper end surface of the lower end valve 62 so that the poppet 60 does not move upward.

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のピストン部７０Ｂの外周リング部７０Ｃ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、ステム４１の内周孔の段差面がエアピストン７０の筒部７０Ａ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）。 In the bubble discharger 10, the hollow cylindrical portion 70 A of the air piston 70 is loosely inserted on the outer periphery of the piston guide 51, and the outer peripheral ring portion 70 C of the piston portion 70 B of the air piston 70 is slidable on the inner wall of the large diameter portion 30 A. Insert into. In the present embodiment, when the upper end portion of the cylindrical portion 70A of the air piston 70 is inserted into the lower end stepped inner peripheral hole of the stem 41 of the head portion 40, and the head portion 40 is moved slightly downward from the initial state of FIG. Furthermore, after a certain time difference in which the step surface of the inner peripheral hole of the stem 41 hits the upper end surface of the cylindrical portion 70A of the air piston 70, the air piston is moved downward by the downward movement of the head 40 (the piston guide 51 and the liquid piston 52 are also integrated). 70 is also moved down. 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、エアピストン７０の空気室Ａに対する裏側に外気取り込み室７１を設け、頭部４０のステム４１とキャップ２０の筒部２０Ｂの間の微小環状間隙を外気取り込み室７１への外気取り込み路７１Ａとしている。泡吐出器１０は、外気取り込み室７１と空気室Ａを連通する空気の吸入口７２Ａをエアピストン７０のピストン部７０Ｂに設け、空気の吸入口７２Ａを開閉して外気取り込み室７１から空気室Ａへの空気の吸入を許容する吸入チェック弁７２をエアピストン７０のピストン部７０Ｂにおいて空気室Ａに臨む側に設ける。 The foam discharger 10 is provided with an outside air intake chamber 71 on the back side of the air piston 70 with respect to the air chamber A, and a small annular gap between the stem 41 of the head 40 and the cylindrical portion 20B of the cap 20 is provided to the outside air intake chamber 71. The intake path 71A is used. The bubble discharger 10 is provided with an air inlet 72A communicating with the outside air intake chamber 71 and the air chamber A in the piston portion 70B of the air piston 70, and opens and closes the air inlet 72A to open the air chamber A from the outside air intake chamber 71. An intake check valve 72 that allows the intake of air into the piston portion 70B of the air piston 70 is provided on the side facing the air chamber A.

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 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は外気取り込み路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 of the cap 20 with the cover 75, and forms a minute gap around the cylindrical portion 20 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 path 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 a jet ring 81 provided in the meeting area (directly above the ball valve 55) of the liquid discharge path 54 and the air discharge path 73, and jets the foamed content liquid. Fine bubbles are generated by passing the mesh 82A attached to the mesh ring 82 disposed on the upper side of the ring 81, and can be discharged from the discharge port 42.

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へ侵入した外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の底部による円錐面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 has an air discharge port 73A from the air chamber A near the bottom of the air chamber A in order to prevent stagnation of outside water that has entered the air chamber A formed by the large diameter portion 30A of the cylinder 30. Provide. 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 made to be a cone 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、エアピストン７０の裏側に設けた前述の外気取り込み室７１をシリンダ３０の大径部３０Ａの上端側に穿設した空気導入口９１を介して容器本体１の内部と連通可能にしている。泡吐出器１０の初期状態（図１）で、空気導入口９１はエアピストン７０のピストン部７０Ｂのリング部７０Ｃによりカバーされて外気取り込み室７１に対し閉じられ、頭部４０の上下の往復動時に、空気導入口９１はエアピストン７０のピストン部７０Ｂのリング部７０Ｃによるカバーが外れて外気取り込み室７１に対し開口され、かつ空気導入口９１は、空気室Ａとは常時遮断されている。 The foam discharger 10 is connected to the inside of the container main body 1 through an air inlet 91 in which the above-described outside air intake chamber 71 provided on the back side of the air piston 70 is formed in the upper end side of the large-diameter portion 30A of the cylinder 30. Communication is possible. In the initial state of the foam discharger 10 (FIG. 1), the air introduction port 91 is covered by the ring part 70C of the piston part 70B of the air piston 70 and closed with respect to the outside air intake chamber 71, and the head 40 is reciprocated up and down. Sometimes, the air introduction port 91 is opened to the outside air intake chamber 71 with the cover by the ring portion 70C of the piston portion 70B of the air piston 70 removed, and the air introduction port 91 is always disconnected from the air chamber A.

しかるに、泡吐出器１０にあっては、外気取り込み路７１Ａから外気取り込み室７１に取り込まれる外気に随伴して外気取り込み室７１に浸入した外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、エアピストン７０に設ける空気の吸入口７２Ａを、エアピストン７０のピストン部７０Ｂが形成する外気取り込み室７１の凹状をなす底部７１Ｂの最下位部（泡吐出器１０の正立状態で底部７１Ｂの鉛直方向における最下位部）に設けた。具体的には、外気取り込み室７１の底部７１Ｂをエアピストン７０の外周のリング部７０Ｃから中空筒部７０Ａの周囲の複数か所に設けた空気の吸入口７２Ａに向けて連続する下り勾配をなすもの、例えばテーパ状にした。 However, the foam discharger 10 has the following configuration in order to prevent the generation of bacteria due to the outside water that has entered the outside air intake chamber 71 along with the outside air taken into the outside air intake chamber 71 from the outside air intake passage 71A. It has. That is, the air suction port 72A provided in the air piston 70 is provided at the lowermost portion of the bottom 71B that forms the concave shape of the outside air intake chamber 71 formed by the piston portion 70B of the air piston 70 (the bottom 71B in the upright state of the bubble discharger 10). At the lowest position in the vertical direction). Specifically, the bottom portion 71B of the outside air intake chamber 71 has a continuous downward gradient from the ring portion 70C on the outer periphery of the air piston 70 toward the air inlets 72A provided at a plurality of locations around the hollow cylindrical portion 70A. Things, for example, tapered.

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 together 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９１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 91 on the side surface of the air chamber A that was 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 3) (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４）（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 4) (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、空気吸入口７２Ａを通り空気室Ａ内へ空気が吸入される。このとき、外気取り込み室７１の底部７１Ｂに溜まっている外水も空気吸入口７２Ａを通り空気室Ａに導かれる。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 port 72A. At this time, outside water accumulated in the bottom 71B of the outside air intake chamber 71 is also guided to the air chamber A through the air inlet 72A. 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.

尚、空気室Ａに導かれた上述の外水は、次に頭部４０を押したときに空気室Ａから排出される空気とともに空気排出路７３を通って泡生成部８０に排出される。 In addition, the above-described outside water guided to the air chamber A is discharged to the foam generating unit 80 through the air discharge path 73 together with the air discharged from the air chamber A when the head 40 is pushed next time.

(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)エアピストン７０に設ける空気の吸入口７２Ａをエアピストン７０が形成する外気取り込み室７１の凹状をなす底部７１Ｂの最下位部に設けた。従って、外気とともに外気取り込み室７１に取り込まれた外水はこの凹状底部７１Ｂに一端溜まる。そして、泡吐出器１０の吐出後の吸入行程で（頭部４０の上昇行程で）エアピストン７０が空気室Ａを拡張して吸入チェック弁７２により吸入口７２Ａを開き、外気取り込み室７１の空気を空気室Ａへ吸入するとき、外気取り込み室７１の凹状底部７１Ｂに溜まっていた外水も空気室Ａへ移送する。空気室Ａに移送された外水は、次の泡吐出器１０の吐出行程（頭部４０の押圧による下降行程）でエアピストン７０が空気室Ａを収縮するとき、空気とともに泡生成部８０に排出される。従って、外水はエアピストン７０の裏側の凹状底部７１Ｂに長時間滞留することなく、菌の繁殖を防止される。 According to the present embodiment, the following operational effects can be obtained.
(a) The air inlet 72A provided in the air piston 70 is provided in the lowest part of the bottom 71B having a concave shape of the outside air intake chamber 71 formed by the air piston 70. Accordingly, the outside water taken into the outside air taking-in chamber 71 together with the outside air is accumulated at one end in the concave bottom portion 71B. The air piston 70 expands the air chamber A in the intake stroke after the discharge of the foam discharger 10 (in the upward stroke of the head 40), opens the intake port 72A by the intake check valve 72, and air in the outside air intake chamber 71 Is sucked into the air chamber A, the outside water accumulated in the concave bottom portion 71B of the outside air intake chamber 71 is also transferred to the air chamber A. When the air piston 70 contracts the air chamber A in the discharge stroke of the next bubble discharger 10 (the downward stroke due to the pressing of the head 40), the outside water transferred to the air chamber A is transferred to the bubble generator 80 together with the air. Discharged. Therefore, the outside water does not stay in the concave bottom portion 71B on the back side of the air piston 70 for a long time, thereby preventing the growth of bacteria.

(b)外気取り込み室７１の底部７１Ｂを吸入口７２Ａに向けて下り勾配をなすように形成したから、外気とともに外気取り込み室７１に取り込まれた外水をその凹状底部７１Ｂの吸入口７２Ａの周辺に集め、上述(a)による外水の空気室Ａへの移送作用の確実を図ることができる。 (b) Since the bottom 71B of the outside air intake chamber 71 is formed so as to be inclined downward toward the suction port 72A, the outside water taken into the outside air intake chamber 71 together with the outside air is surrounded by the periphery of the suction port 72A of the concave bottom portion 71B. Thus, the action of transferring the outside water to the air chamber A according to the above (a) can be ensured.

図１は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. 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.

Explanation of symbols

１容器本体
１Ａ口部
１０泡吐出器
２０キャップ
４０頭部
４２吐出口
５２液ピストン
７０エアピストン
７１外気取り込み室
７１Ａ外気取り込み路
７１Ｂ凹状底部
７２吸入チェック弁
７２Ａ空気吸入口
８０泡生成部
Ａ空気室
Ｌ液室 DESCRIPTION OF SYMBOLS 1 Container body 1A Mouth part 10 Foam discharger 20 Cap 40 Head 42 Discharge port 52 Liquid piston 70 Air piston 71 Outside air intake chamber 71A Outside air intake path 71B Concave bottom 72 Intake check valve 72A Air inlet 80 Bubble generating part A Air chamber L liquid chamber

Claims

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,
An air piston that expands and contracts the air chamber in conjunction with the reciprocating motion of the head is provided, the outside air is sucked into the air chamber expanded by the air piston, and the air in the air chamber contracted by the air piston is supplied to the bubble generating unit. A foam dispenser for discharging,
An outside air intake chamber is provided on the back side of the air piston with respect to the air chamber, an air intake port communicating with the outside air intake chamber and the air chamber is provided in the air piston, and the air intake port provided in the air piston is opened and closed to open and close the outside air intake chamber. An intake check valve that allows air to be sucked into the air chamber from
A bubble discharge device provided with an air suction port provided in an air piston at a lowermost portion of a bottom portion forming a concave shape of an outside air intake chamber formed by the air piston.

The foam discharger according to claim 1, wherein a bottom portion of the outside air intake chamber forms a downward slope toward an air suction port.

The foam discharger according to claim 1, wherein an air discharge port from the air chamber to the bubble generation unit is provided at a bottom portion of the air chamber, and the bottom portion of the air chamber forms a downward slope toward the air discharge port.