JP2009195847A - Foam injector - Google Patents

Foam injector Download PDF

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Publication number
JP2009195847A
JP2009195847A JP2008041748A JP2008041748A JP2009195847A JP 2009195847 A JP2009195847 A JP 2009195847A JP 2008041748 A JP2008041748 A JP 2008041748A JP 2008041748 A JP2008041748 A JP 2008041748A JP 2009195847 A JP2009195847 A JP 2009195847A
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air
piston
chamber
foam
head
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Rie Ishii
理恵 石井
Jin Akasaka
神 赤坂
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Kao Corp
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Kao Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a foam injector capable of preventing intrusion of foreign matter mixed in external air taken in an external air take-in chamber on the rear side of an air piston into an air chamber. <P>SOLUTION: As for the foam injector 100, the external air take-in chamber 71 is provided on the rear side of the air chamber A of an air piston 70, an air suction port 72A which communicates with the external air take-in chamber 71 and the air chamber A is provided on the air piston 70, a suction check valve 72 for allowing the suction of the air to the air chamber A from the external air intake chamber 71 by opening and closing the air suction port 72A provided in the air piston 70 is provided on the air piston 70, a piston cover 100 for forming an external air introducing passage 101 formed through the back surface is provided to cover the back surface including the suction port 72A of the air in the air piston 70 and the external air introducing port 101A through which the external air introducing passage 101 formed the piston cover 100 communicates with the external air intake chamber 71 is positioned on a lower position than that of the air suction port 72A in the vertical direction. <P>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送出するものがある。この泡吐出器は、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いる。   As described in Patent Document 1, 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 of the liquid chamber can be changed by reciprocating the head portion. When the content liquid is sent from the air chamber of variable volume 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. 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 There is something to send to. This foam discharge device is provided with an outside air intake chamber 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 provided. An intake check valve that opens and closes and allows the intake of air from the outside air intake chamber to the air chamber is provided.

更に、この泡吐出器では、外気に混入している異物がエアピストンに設けてある空気の吸入口から空気室に侵入することを防止するため、空気の吸入口に細孔を備えたフィルターを設けている。
特開2005-13945 Furthermore, in this foam discharger, in order to prevent foreign matter mixed in the outside air from entering the air chamber from the air inlet provided in the air piston, a filter having pores in the air inlet is provided. Provided.
JP2005-13945

特許文献１に記載の泡吐出器では、エアピストンに設けた空気の吸入口が外気取り込み室に直に開口している。このため、外気取り込み室から鉛直方向に流下してくる外気がそのまま直に空気の吸入口に流入し、外気に混入している異物が空気の吸入口に設けてあるフィルターに到達し易い。フィルターに到達した異物は、フィルターの目つまりを生じたり、フィルターの細孔径より小粒であればフィルターを通過して空気室に侵入してしまうおそれもある。また、フィルターを通過した異物が吸入チェック弁に噛み込んで該吸入チェック弁を開き放しにし、エアピストンによる空気の吸入／送出機能を損なうおそれもある。   In the foam discharge device described in Patent Document 1, an air suction port provided in the air piston opens directly into the outside air intake chamber. For this reason, the outside air flowing down in the vertical direction from the outside air intake chamber directly flows into the air suction port, and foreign matters mixed in the outside air easily reach the filter provided at the air suction port. The foreign matter that reaches the filter may cause clogging of the filter, or if it is smaller than the pore diameter of the filter, it may pass through the filter and enter the air chamber. In addition, foreign matter that has passed through the filter may bite into the suction check valve, leaving the suction check valve open, and may impair the air suction / delivery function of the air piston.

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取り込まれた外気に混入している異物が空気室に侵入することを防止することにある。   An object of the present invention is to prevent foreign matters mixed in the outside air taken into the outside air taking-in chamber on the back side of the air piston from entering 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送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、即ちエアピストンを挟んで空気室とは反対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、エアピストンの空気の吸入口を含む裏面を覆って該裏面との間に外気導入路を形成するピストンカバーを設け、ピストンカバーが形成する外気導入路は空気の吸入口よりも鉛直方向の下位に位置する外気導入口を介して外気取り込み室に連通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. 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 sends the air in the air chamber contracted by the air piston to the foam generating unit In addition, an air intake chamber is provided on the back side of the air piston with respect to the air chamber, that is, on the opposite side of the air chamber with the air piston interposed therebetween, and an air intake port that communicates the outside air intake chamber and the air chamber is provided in the air piston. Airpis An intake check valve is provided that opens and closes the air suction port provided in the air chamber to allow air to be sucked into the air chamber from the outside air intake chamber, and covers the back surface of the air piston including the air suction port. Provided with a piston cover that forms an outside air introduction path, and the outside air introduction path formed by the piston cover communicates with the outside air intake chamber via an outside air introduction port positioned lower than the air suction port in the vertical direction. It is.

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に送り、該泡生成部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 </ 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 foam is mixed and foamed by the foam generation unit 80, 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ている。   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. In addition, a ball valve 55 that is opened by the pressure from the liquid discharge path 54 is closely mounted on 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の下端側の一部はコイルばね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の下端側縮径部）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 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 disposed in close contact with the lower end side valve seat 34 of the small diameter portion 30 </ b> 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. A part of the lower end side of the poppet 60 extends to the center of the coil spring 53. The lower end valve 62 of the poppet 60 is pressed to the lower end side valve seat 34 (lower end side reduced diameter portion of the small diameter portion 30B) by the liquid pressure of the liquid chamber L which is contracted and pressurized by the liquid piston 52 to be in a closed state. . 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に収容されている内容液を吸入し、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 contained in the container body 1 is sucked into the liquid chamber L expanded by the movement, and the contents of the liquid chamber L 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している。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、それらの間に後述する空気送出口７３Ａを形成可能にする（図２）。   In the bubble discharger 10, the hollow cylindrical portion 70 </ b> 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 </ b> C of the piston portion 70 </ b> B of the air piston 70 is slidable on the inner wall of the large diameter portion 30 </ b> A. Is inserted. 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 delivery port 73A described later can be formed between them (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（本実施形態ではエアピストン７０の筒部７０Ａ近傍外周側に複数の孔によって形成し）、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。吸入チェック弁７２は、本実施形態では、弾性樹脂材からなり、泡吐出器１０の正立状態においてエアピストン７０の空気の吸入口７２Ａの下方に配置され、エアピストン７０の筒部７０Ａの外周に液密に取着された筒部ａと、筒部ａから外周方向に張り出し先端に向けてやや肉薄になるリング状張り出し部ｂから形成され、リング状張り出し部ｂの先端のエアピストン７０との接触を、撓み変形によって解除可能とし、空気の吸入口７２Ａから空気室Ａへの空気流路を開閉する。   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 suction port 72A communicating with the outside air intake chamber 71 and the air chamber A in the piston portion 70B of the air piston 70 (in this embodiment, a plurality of air pistons 70A on the outer peripheral side in the vicinity of the cylinder portion 70A). A suction check valve 72 that opens and closes the air suction port 72A to allow air to be sucked into the air chamber A from the outside air intake chamber 71 and faces the air chamber A in the piston portion 70B of the air piston 70. Provided. In the present embodiment, the suction check valve 72 is made of an elastic resin material, and is disposed below the air suction port 72A of the air piston 70 in the upright state of the foam discharger 10, and the outer periphery of the cylindrical portion 70A of the air piston 70. A cylindrical portion a that is liquid-tightly attached to the ring portion, and a ring-shaped protruding portion b that protrudes from the cylindrical portion a in the outer peripheral direction and becomes slightly thinner toward the tip, and an air piston 70 at the tip of the ring-shaped protruding portion b. These contacts can be released by bending deformation, and the air flow path from the air inlet 72A to the air chamber A is opened and closed.

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送出路７３を設け、ピストンガイド５１の中間フランジ部５１Ｂとエアピストン７０の筒部７０Ａの下端とが空気送出口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の中間フランジ部５１Ｂをエアピストン７０の筒部７０Ａの下端から離隔させてそれらの間に空気送出口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の中間フランジ部５１Ｂをエアピストン７０の筒部７０Ａの下端に下から衝合させてそれらの下端間の空気送出口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 delivery path 73 is provided, and an intermediate flange portion 51B of the piston guide 51 and a lower end of the cylinder portion 70A of the air piston 70 form an on-off valve 74 that opens and closes the air delivery port 73A. The on-off valve 74 separates the intermediate flange portion 51B of the piston guide 51 that moves downward together with the head portion 40 when the head portion 40 is moved downward from the lower end of the cylindrical portion 70A of the air piston 70, and provides an air outlet 73A therebetween. Opening (FIG. 3), the intermediate flange portion 51B of the piston guide 51 that moves up together with the head portion 40 when the head portion 40 moves upward is brought into contact with the lower end of the cylinder portion 70A of the air piston 70 from below, and the space between the lower ends thereof. The air outlet 73A is closed (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> 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 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に送出する。   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 send.

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と空気送出路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させ、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 (directly above the ball valve 55) of the liquid discharge path 54 and the air delivery path 73, and the foamed content liquid is 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.

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、かつ外気取り込み室７１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. At times, the air introduction port 91 is opened to the outside air intake chamber 71 with the cover of the ring portion 70C of the piston portion 70B of the air piston 70 removed, and the outside air intake chamber 71 is always disconnected from the air chamber A.

しかるに、泡吐出器１０にあっては、図６に示す如く、エアピストン７０の裏側の外気取り込み室７１に取り込まれた外気に混入している異物が空気室Ａに侵入することを防止するため、以下の構成を具備する。即ち、エアピストン７０の空気の吸入口７２Ａを含む裏面を覆って該裏面との間に外気導入路１０１を形成するピストンカバー１００を設け、ピストンカバー１００が形成する外気導入路１０１は泡吐出器１０の正立状態で空気の吸入口７２Ａよりも鉛直方向の下位に位置する外気導入口１０１Ａを介して外気取り込み室７１に連通する。   However, in the foam discharger 10, as shown in FIG. 6, the foreign matter mixed in the outside air taken into the outside air taking-in chamber 71 on the back side of the air piston 70 is prevented from entering the air chamber A. The following configuration is provided. That is, a piston cover 100 that covers the back surface of the air piston 70 including the air inlet 72A and forms the outside air introduction path 101 between the back surface is provided, and the outside air introduction path 101 formed by the piston cover 100 is a foam discharger. In the upright state, the air communication port 71 communicates with the outside air intake chamber 71 through the outside air inlet port 101A positioned lower in the vertical direction than the air inlet port 72A.

ピストンカバー１００は、図６に示す如く、エアピストン７０のピストン部７０Ｂのリング部７０Ｃより小径側の中高の中間筒部７０Ｄの外周に被着される有天筒状をなす。ピストンカバー１００は、図７に示す如く、筒内面の周方向多数位置に溝部１００Ａを設け、その溝部１００Ａによって筒内面とエアピストン７０の裏面との間に外気導入路１０１を形成し、該溝部１００Ａが連続する筒下端では、該溝部１００Ａが筒下端に対する溝をなし（筒の下端部が凹凸をなし）、この筒下端の溝とエアピストン７０の裏面との間の空間によって外気導入口１０１Ａを形成する。   As shown in FIG. 6, the piston cover 100 has a cylindrical shape that is attached to the outer periphery of a middle-high intermediate cylinder part 70 </ b> D on the smaller diameter side than the ring part 70 </ b> C of the piston part 70 </ b> B of the air piston 70. As shown in FIG. 7, the piston cover 100 is provided with grooves 100A at numerous circumferential positions on the inner surface of the cylinder, and the grooves 100A form an outside air introduction path 101 between the inner surface of the cylinder and the back surface of the air piston 70. At the lower end of the cylinder in which 100A is continuous, the groove 100A forms a groove with respect to the lower end of the cylinder (the lower end of the cylinder is uneven), and the space between the groove at the lower end of the cylinder and the back surface of the air piston 70 serves as an outside air inlet 101A. Form.

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の筒部７０Ａの下端とピストンガイド５１の中間フランジ部５１Ｂの間に隙間ができ、空気室Ａの送出口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 narrower) (IB portion), the lower end of the cylindrical portion 70A of the air piston 70 and the intermediate flange of the piston guide 51 A gap is formed between the portions 51B and becomes the air outlet 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内の空気は空気送出路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。発泡した内容液はメッシュリング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 delivery 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 foamed content liquid passes through the mesh 82 </ b> A attached to the mesh ring 82 and is discharged as a fine bubble from the discharge port 42 of the head 40.

(3)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。   (3) Since the air introduction port 91 on the side surface of the air chamber A that has been closed by the air piston 70 is opened while the head 40 is being pushed, 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の筒部７０Ｂの下端とピストンガイド５１の中間フランジ部５１Ｂの隙間が閉じ、空気送出口７３Ａが閉じられる（IIIＣ部分）。   (3) Since the air piston 70 does not move at this time (the gap between the head 40 and the upper end of the air piston 70 becomes wider) (IIIB portion), the lower end of the cylindrical portion 70B of the air piston 70 and the intermediate flange of the piston guide 51 The gap between the portions 51B is closed, and 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、外気取り込み室７１の外気が空気吸入口７２Ａを通り空気室Ａ内へ吸入される。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。このとき、外気取り込み室７１の外気は、ピストンカバー１００が形成する外気導入口１０１Ａから外気導入路１０１を経由して空気吸入口７２Ａに到達する。   (2) Since the air chamber A has a negative pressure, the suction check valve 72 is opened, and the outside air in the outside air intake chamber 71 is sucked into the air chamber A through the air suction port 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. At this time, the outside air in the outside air intake chamber 71 reaches the air inlet 72 </ b> A via the outside air introduction path 101 from the outside air inlet 101 </ b> A formed by the piston cover 100.

(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。
（請求項１）
(a)エアピストン７０の空気吸入口７２Ａを含む裏面を覆って該裏面との間に外気導入路１０１を形成するピストンカバー１００を設け、ピストンカバー１００が形成する外気導入路１０１は空気吸入口７２Ａよりも鉛直方向の下位に位置する外気導入口１０１Ａを介して外気取り込み室７１に連通するようにした。これにより、外気取り込み室７１に取り込まれた外気は、ピストンカバー１００の外周を下降してその下位の外気導入口１０１ＡでＵターンし、ピストンカバー１００の内周を上昇してその上方の空気の吸入口７２Ａから空気室Ａの側に入る。外気に混入していた異物は外気が下降流から上昇流にＵターンする外気導入口１０１Ａの付近に置き去りにされ、異物のない空気だけが空気吸入口７２Ａから空気室Ａの側に入ることになる。このエアピストン７０まわりでの外気のＵターン流れにより、異物が吸入チェック弁７２に噛み込む等がなくなり、エアピストン７０による空気の吸入／送出機能を安定維持する等、泡吐出器１０の泡吐出動作の安定を図ることができる。 According to the present embodiment, the following operational effects can be obtained.
(Claim 1)
(a) A piston cover 100 that covers the back surface of the air piston 70 including the air suction port 72A and forms the outside air introduction path 101 between the back surface is provided. The outside air introduction path 101 formed by the piston cover 100 is the air suction port. It communicated with the outside air intake chamber 71 via the outside air inlet 101A located at a lower position in the vertical direction than 72A. As a result, the outside air taken into the outside air intake chamber 71 descends the outer periphery of the piston cover 100 and makes a U-turn at the lower outside air introduction port 101A, and ascends the inner periphery of the piston cover 100 to move the air above it. The air enters the air chamber A from the inlet 72A. The foreign matter mixed in the outside air is left in the vicinity of the outside air inlet 101A where the outside air makes a U-turn from the downward flow to the upward flow, and only air without foreign matter enters the air chamber A side from the air inlet 72A. Become. Due to the U-turn flow of the outside air around the air piston 70, foreign matter does not bite into the suction check valve 72, and the bubble discharge of the bubble discharger 10 such as maintaining stable air suction / delivery function by the air piston 70, etc. Operation can be stabilized.

（請求項２）
(b)ピストンカバー１００がエアピストン７０の外周に被着される有天筒状をなし、筒内面とエアピストン７０の裏面との間に外気導入路１０１を形成し、筒下端とエアピストン７０の裏面との間に外気導入口１０１Ａを形成することにより、ピストンカバー１００まわりでの上述(a)の外気のＵターン流れの確実を図ることができる。 (Claim 2)
(b) The piston cover 100 is in the shape of a cylinder that is attached to the outer periphery of the air piston 70, and an outside air introduction path 101 is formed between the inner surface of the cylinder and the back surface of the air piston 70. By forming the outside air introduction port 101 </ b> A with the back surface of the above, the U-turn flow of the outside air (a) around the piston cover 100 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. 図６は空気室への外気導入構造を示す模式図である。FIG. 6 is a schematic diagram showing a structure for introducing outside air into the air chamber. 図７はピストンカバーを示す模式図である。FIG. 7 is a schematic view showing a piston cover.

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
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
７２ 吸入チェック弁
７２Ａ 空気吸入口
８０ 泡生成部
１００ ピストンカバー
１０１ 外気導入路
１０１Ａ 外気導入口
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 72 Intake check valve 72A Air inlet 80 Foam generation part 100 Piston cover 101 Outside air introduction path 101A Outside air introduction Mouth A Air chamber 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送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エアピストンに設け、
エアピストンの空気の吸入口を含む裏面を覆って該裏面との間に外気導入路を形成するピストンカバーを設け、ピストンカバーの形成する外気導入路が外気取り込み室に連通する外気導入口は、空気の吸入口よりも鉛直方向の下位に位置する泡吐出器。 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,
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 delivery;
An 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 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 the air intake chamber. An air check valve that allows air to be sucked into the air chamber is provided on the air piston,
A piston cover that covers the back surface including the air suction port of the air piston and forms an outside air introduction path between the back surface and the outside air introduction port that the outside air introduction path formed by the piston cover communicates with the outside air intake chamber is: A foam dispenser located in the lower vertical direction than the air inlet. 前記ピストンカバーがエアピストンの外周に被着される有天筒状をなし、筒内面とエアピストンの裏面との間に外気導入路を形成し、筒下端とエアピストンの裏面との間に外気導入口を形成する請求項１に記載の泡吐出器。   The piston cover is formed in a cylindrical shape that is attached to the outer periphery of the air piston, forms an outside air introduction path between the inner surface of the cylinder and the back surface of the air piston, and the outside air is formed between the lower end of the tube and the back surface of the air piston. The foam discharger according to claim 1, which forms an inlet.
JP2008041748A 2008-02-22 2008-02-22 Foam injector Pending JP2009195847A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011200766A (en) * 2010-03-24 2011-10-13 Kao Corp Sprayer
KR200467835Y1 (en) 2011-11-03 2013-07-08 (주)삼화피앤티 A pump for making bubble-foam
JP2016113155A (en) * 2014-12-11 2016-06-23 花王株式会社 Foam discharger
CN107670863A (en) * 2017-11-14 2018-02-09 上海沥森环保科技有限公司 A kind of high pressure car washer foam nozzle and its application
CN112193609A (en) * 2020-09-09 2021-01-08 宁波圣捷喷雾泵有限公司 Liquid pump

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH091009A (en) * 1995-06-14 1997-01-07 Puresuko Kk Bubble formation pump type fluid distribution vessel and gas-liquid mixing member
JP2007253113A (en) * 2006-03-24 2007-10-04 Yoshino Kogyosho Co Ltd Foam jetting unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH091009A (en) * 1995-06-14 1997-01-07 Puresuko Kk Bubble formation pump type fluid distribution vessel and gas-liquid mixing member
JP2007253113A (en) * 2006-03-24 2007-10-04 Yoshino Kogyosho Co Ltd Foam jetting unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011200766A (en) * 2010-03-24 2011-10-13 Kao Corp Sprayer
KR200467835Y1 (en) 2011-11-03 2013-07-08 (주)삼화피앤티 A pump for making bubble-foam
JP2016113155A (en) * 2014-12-11 2016-06-23 花王株式会社 Foam discharger
CN107670863A (en) * 2017-11-14 2018-02-09 上海沥森环保科技有限公司 A kind of high pressure car washer foam nozzle and its application
CN112193609A (en) * 2020-09-09 2021-01-08 宁波圣捷喷雾泵有限公司 Liquid pump

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