JP4973985B2

JP4973985B2 - Quantitative injection mechanism and aerosol-type product equipped with this quantitative injection mechanism

Info

Publication number: JP4973985B2
Application number: JP2007125868A
Authority: JP
Inventors: 保夫大島
Original assignee: Mitani Valve Co Ltd
Current assignee: Mitani Valve Co Ltd
Priority date: 2006-05-11
Filing date: 2007-05-10
Publication date: 2012-07-11
Anticipated expiration: 2027-05-10
Also published as: JP2007326647A

Description

本発明は、圧縮ガスを用いるタイプのエアゾール式製品の定量噴射機構に関する。
特にエアゾール容器のステム側部材と、これに対して移動する操作側部材との間に内容物噴射用の定量室を形成し、当該定量室の画定要素であるピストンを容器内部の圧縮ガスの作用で駆動してその容積（定量室容積）を小さくすることにより、（前回の定量噴射終了段階で）定量室に収納済みの内容物が外部空間に噴射されるようにした定量噴射機構に関する。 The present invention relates to a fixed-quantity injection mechanism of an aerosol type product using a compressed gas.
In particular, a metering chamber for injecting contents is formed between the stem-side member of the aerosol container and the operation-side member that moves relative to the stem-side member, and the piston, which defines the metering chamber, acts as a compressed gas inside the container. It is related with the fixed_quantity | quantitative_quantity injection mechanism which the content accommodated in the fixed_quantity | quantitative_assay chamber was injected in external space (at the completion | finish stage of the last fixed_quantity | quantitative_assay).

すなわち、ステム出力部と操作部との間に定量室を形成し、かつ、圧縮ガス使用のエアゾール式製品を対象とし、操作部を作動モード設定のときと同じように例えば押下げるときに定量室の内容物が外部空間に噴射される態様の定量噴射機構である。 That is, a fixed-quantity chamber is formed between the stem output part and the operation part, and the fixed-quantity chamber is intended for aerosol-type products using compressed gas, for example, when the operation part is pushed down in the same manner as when the operation mode is set. It is a fixed quantity injection mechanism of the mode by which the contents of are injected into external space.

また、ピストンがその最終位置（例えば最上位置）まで移動して内容物の本来の連続噴射を終えた段階で定量室領域と噴射口側の内容物通路域との間をシールし、このシール作用によりアフタードロー防止機能を備えた定量噴射機構も対象にしている。 Also, when the piston moves to its final position (for example, the uppermost position) and completes the original continuous injection of the contents, the gap between the metering chamber area and the contents passage area on the injection port side is sealed, and this sealing action Therefore, the quantitative injection mechanism having an after-draw prevention function is also targeted.

本件出願人はすでにステム出力部と操作部との間に定量室を形成するタイプの定量噴射機構を提案している（特許文献１参照）。なお、以下の記載での[ ]付きの数字は当該特許文献１における参照番号を示している。 The present applicant has already proposed a fixed quantity injection mechanism of a type in which a fixed quantity chamber is formed between the stem output part and the operation part (see Patent Document 1). In the following description, numerals with [] indicate reference numbers in Patent Document 1.

この定量噴射機構は、
1. ステム[3]
2. 当該ステムに取り付けられた弁座部[10]
3. 当該ステムおよび当該弁座部の一体化部材に対して上下動可能な態様で設定された噴射ボタン本体[20]
4. 当該弁座部と当該噴射ボタン本体との間に設けられてこのボタン本体を上方向に付勢するコイルスプリング[15]
などの構成部材からなる。 This quantitative injection mechanism
1. Stem [3]
2. Valve seat attached to the stem [10]
3. Injection button body [20] set in such a manner that it can be moved up and down with respect to the integral member of the stem and the valve seat.
4. A coil spring [15] provided between the valve seat and the injection button body to urge the button body upward
It consists of structural members.

そして、弁座部[10]の環状弁座[17]と噴射ボタン本体[20]の環状弁体[27]とで定量空間域の出力弁を構成している。 The annular valve seat [17] of the valve seat portion [10] and the annular valve body [27] of the injection button main body [20] constitute an output valve in a quantitative space region.

噴射ボタン本体[20]を押下げていない静止モードの場合、コイルスプリング[15]の弾性力により出力弁が開いている。このときステム[3]のいわゆる流入弁（＝内容物通過用のステム周面孔部とこれを開閉するステムガスケットとからなる弁）が周知のコイルスプリングの作用により閉じている、ことは勿論である。 In the stationary mode in which the injection button body [20] is not depressed, the output valve is opened by the elastic force of the coil spring [15]. At this time, of course, the so-called inflow valve of the stem [3] (= the valve comprising the stem peripheral surface hole for passing the contents and the stem gasket for opening and closing the same) is closed by the action of a known coil spring. .

噴射ボタン本体[20]をその静止モードの位置から押下げると、先ず当該ボタン本体のみがコイルスプリング[15]の弾性力に抗しながら下動して出力弁が閉じる。 When the injection button body [20] is pushed down from the position of the stationary mode, first, only the button body moves downward while resisting the elastic force of the coil spring [15], and the output valve is closed.

出力弁が閉じた後は、ステム[3]，弁座部[10]および噴射ボタン本体[20]が一体となって、すなわち出力弁が閉じたまま下動してステム流入弁が開き、内容物が定量空間域に入り込む。 After the output valve is closed, the stem [3], the valve seat [10], and the injection button body [20] are integrated, that is, the output valve is closed and the stem inflow valve is opened. An object enters the quantitative space area.

次に、利用者が噴射ボタンの押下げ操作を止めると、ステム[3]が（ステム用の）コイルスプリングの弾性作用により上動して流入弁は閉じ、かつ、噴射ボタン本体[20]がコイルスプリング[15]の弾性作用により（弁座部[10]に対して）上動して定量空間域の出力弁は開く。そのため、定量空間域の内容物のみが外部空間に噴射される。
特開２００３−２９９９１号公報 Next, when the user stops the push-down operation of the injection button, the stem [3] is moved up by the elastic action of the coil spring (for the stem), the inflow valve is closed, and the injection button body [20] Due to the elastic action of the coil spring [15] (relative to the valve seat [10]), the output valve in the fixed space area opens. Therefore, only the contents in the quantitative space area are injected into the external space.
JP 2003-29991 A

以上の定量噴射機構は、噴射ボタンの押下げ操作時にステム流入弁と操作部との間に定量室を形成して、押下げ操作解除後の当該噴射ボタンの復帰動作時に当該定量室の内容物が外部空間に噴射されるという新しいタイプのものである。 The above-described fixed quantity injection mechanism forms a fixed quantity chamber between the stem inflow valve and the operation part when the injection button is pushed down, and the contents of the fixed quantity chamber when the injection button returns after the push down operation is released. Is a new type that is injected into the external space.

ただ定量噴射機構の構造上、この機構の適用対象となりえるのは液化ガス態様のエアゾール式製品であって、圧縮ガスを収納したエアゾール式製品は当該機構の適用対象外となる。 However, due to the structure of the quantitative injection mechanism, the application target of this mechanism is an aerosol type product in the form of a liquefied gas, and the aerosol type product containing compressed gas is not applicable to the mechanism.

そこで本発明では、ステムと操作部との間にピストンで画定される定量室を形成しておき、操作部を例えば押圧操作してステムの弁部分（流入弁）が開き、容器本体の圧縮ガスの作用で当該弁部分から流出する内容物を当該ピストンにいわば押し当てることにより当該ピストンを移動させ、このときの定量室の容積縮小にともないその中の（前回の定量噴射動作の終了段階に収納済みの）内容物が外部空間に噴射されるようにして、圧縮ガス態様のエアゾール式製品での確実な定量噴射動作を担保して技術の豊富化を図ることを目的とする。 Therefore, in the present invention, a metering chamber defined by a piston is formed between the stem and the operation portion, and the operation portion is pressed, for example, to open the stem valve portion (inflow valve), and the compressed gas in the container body The piston is moved by pressing the contents flowing out from the valve part against the piston by the action of the above, and stored in the final stage of the previous quantitative injection operation as the volume of the quantitative chamber is reduced at this time. The purpose is to enrich the technology by guaranteeing a reliable quantitative injection operation in the aerosol type product in the compressed gas mode by injecting the contents (which have already been) into the external space.

さらには、定量噴射動作の終り段階で定量室のいわば出力側をシールしてアフタードローを防止する、すなわち本来の内容物連続噴射後のまだステムの弁作用部が完全に閉じていない状態で噴射口側の通路域に残留している内容物が、容器内部の噴射用ガスの作用に基づく（定量室内容物に対するいわば噴射駆動源としての）ピストンの変形による定量室内の圧力増加にともなって、噴射口から垂れるのを防止し、これによりエアゾール式製品使用時における一層の利便化を図ることを目的とする。 Furthermore, at the end of the quantitative injection operation, the so-called output side of the quantitative chamber is sealed to prevent after-drawing, that is, the injection is performed with the stem valve action part still not completely closed after continuous injection of the original contents. With the increase in pressure in the metering chamber due to the deformation of the piston (as a so-called injection drive source for the metering chamber contents), the contents remaining in the passage area on the mouth side, The purpose of this is to prevent dripping from the injection port, thereby further improving the convenience when using aerosol type products.

本発明は、以上の課題を次のようにして解決する。
（１）圧縮ガスを用いるタイプのエアゾール容器のステム側部材（例えば後述のステム２，ステム側基部３，１１，天板状部材１２）と、これに対して移動する操作側部材（例えば後述の押しボタン４，ボタン側基部５，１３）との間に内容物噴射用の定量室（例えば後述の定量室Ａ，Ａ’）を形成した定量噴射機構において、
前記定量室は、容器内部の圧縮ガスから受ける圧力および当該圧力とは逆方向への弾性体（例えば後述のコイル状のバネ７）の付勢力に基づいて移動するピストン（例えば後述のピストン６，１４）によって画定され、
前記ステム側部材は少なくとも、ステム本体部（例えば後述のステム２）と、当該ステム本体部の下流側で前記操作側部材への内容物通路域を形成して外周面が前記ピストンに対してのシール作用を呈する上流側筒状部（例えば後述の内側上筒状部３ｂ，１１ｂ）と、当該ステム本体部の下流側で前記ピストンとの間に加圧室（例えば後述の加圧室Ｂ，Ｂ’）を形成する環状部（例えば後述の内側下筒状部３ａ，１１ａ，連結部分３ｄ，外側筒状部１１ｄ）と、当該加圧室への内容物の流入口（例えば後述の孔部３ｃ，１１ｃ）とを備え、
前記操作側部材は少なくとも、操作本体部（例えば後述の押しボタン４）と、前記上流側筒状部の出力部分に対する弁作用部（例えば後述の弁作用部５ｄ，１３ｃ）と、当該弁作用部の下流側で内容物通路域を形成する下流側筒状部（例えば後述の小径筒状部５ａ，上側筒状部１３ａ）と、前記定量室から当該内容物通路域への連通部（例えば後述の内側溝状部５ｃ，孔部１３ｂ）とを備え、
静止モードから定量噴射モードに前記操作本体部が操作されたとき、
先ず前記弁作用部が前記上流側筒状部の出力部分をそれまでの開状態から閉状態へと移行させ、続いて前記ステム側部材を駆動して前記ステム本体部の弁部分（例えば後述の横孔部２ｂ）が開き、
その結果、容器本体の内容物が前記流入口から前記加圧室に流入し、前記圧縮ガスの作用で前記ピストンを移動させて前記定量室の容積を小さくすることにより、その中の既収納内容物が前記連通部および前記下流側筒状部を経て外部空間に噴射される、
ものに設定する。
（２）上記（１）において、
少なくとも前記上流側筒状部，前記環状部および前記流入口からなるステム側基部（例えば後述のステム側基部３，１１）が前記ステム本体部と嵌合する態様で設けられ、
少なくとも前記弁作用部，前記連通部および前記下流側筒状部からなる操作側基部（例えば後述のボタン側基部５，）が前記操作本体部と嵌合する態様で設けられている、
ものに設定する。
（３）上記（１）または（２）において、
前記圧縮ガスの作用で前記ピストンが定量噴射モードの終り位置まで移動したときに前記定量室と前記連通部との連続性を遮断する機能を持つシール作用部（例えば後述の弁部材１５）が設けられた、
ものに設定する。
（４）上記（３）において、
前記ステム側部材は、
前記下流側筒状部を囲む形で前記環状部と一体化されて前記弾性体を受け、かつ、前記ピストンとの間に前記定量室を形成する天板状部（例えば後述の天板状部材１２）を備えたものであり、
前記シール作用部は、
前記定量室の形成用部材としても作用する態様で前記下流側筒状部と前記天板状部との間の空間域に設けられた弁部材（例えば後述の弁部材１５）および、前記ピストンの一部で当該弁部材に当接する部分（例えば後述のシール作用筒状部１４ｅ）からなる、
ものに設定する。 The present invention solves the above problems as follows.
(1) Stem side member (for example, stem 2, stem side bases 3, 11, and top plate member 12 described later) of an aerosol container of a type using compressed gas, and an operation side member (for example, described later) that moves relative thereto. In a fixed quantity injection mechanism in which a fixed quantity chamber for content injection (for example, fixed quantity rooms A and A ′ described later) is formed between the push button 4 and the button side base parts 5 and 13),
The metering chamber is a piston that moves based on the pressure received from the compressed gas inside the container and the urging force of an elastic body (for example, a coiled spring 7 described later) in a direction opposite to the pressure (for example, a piston 6 described later). 14),
The stem-side member forms at least a stem main body (for example, a stem 2 described later) and a content passage area to the operation-side member on the downstream side of the stem main body, and the outer peripheral surface is against the piston. A pressurizing chamber (for example, a pressurizing chamber B, which will be described later) between an upstream cylindrical part (for example, an inner upper cylindrical portion 3b, 11b which will be described later) and a piston on the downstream side of the stem main body portion. B ′) (for example, inner lower cylindrical portions 3a, 11a, a connecting portion 3d, and an outer cylindrical portion 11d, which will be described later), and an inlet (for example, a hole portion, which will be described later) to the pressurizing chamber. 3c, 11c)
The operation side member includes at least an operation main body portion (for example, a push button 4 described later), a valve action portion (for example, later-described valve action portions 5d and 13c) for an output portion of the upstream cylindrical portion, and the valve action portion. A downstream cylindrical portion (for example, a small-diameter cylindrical portion 5a and an upper cylindrical portion 13a, which will be described later) that forms a content passage area on the downstream side, and a communication portion (for example, which will be described later) from the quantitative chamber to the content passage area. Inner groove-like portion 5c and hole portion 13b),
When the operation main body is operated from the stationary mode to the quantitative injection mode,
First, the valve action part shifts the output part of the upstream cylindrical part from the open state up to then to the closed state, and then drives the stem side member to drive the valve part of the stem body part (for example, described later). The side hole 2b) opens,
As a result, the contents of the container main body flow into the pressurizing chamber from the inlet, and the piston is moved by the action of the compressed gas to reduce the volume of the quantitative chamber, so that the already stored contents therein An object is injected into the external space through the communication part and the downstream cylindrical part.
Set things.
(2) In (1) above,
A stem side base portion (for example, stem side base portions 3 and 11 described later) including at least the upstream cylindrical portion, the annular portion, and the inflow port is provided in a mode of fitting with the stem main body portion,
An operation side base portion (for example, a button side base portion 5, which will be described later) including at least the valve action portion, the communication portion, and the downstream side cylindrical portion is provided in a manner to be fitted to the operation main body portion.
Set things.
(3) In the above (1) or (2),
A sealing action portion (for example, a valve member 15 to be described later) having a function of blocking the continuity between the fixed quantity chamber and the communication part when the piston moves to the end position of the fixed quantity injection mode by the action of the compressed gas is provided. Was
Set things.
(4) In (3) above,
The stem side member is
A top plate-like portion (for example, a top plate-like member described later) that is integrated with the annular portion so as to surround the downstream cylindrical portion, receives the elastic body, and forms the metering chamber with the piston. 12)
The sealing action part is
A valve member (for example, a valve member 15 to be described later) provided in a space region between the downstream cylindrical portion and the top plate-like portion in an aspect that also functions as a member for forming the metering chamber, and the piston It consists of a part (for example, a sealing action cylindrical part 14e described later) that partially contacts the valve member,
Set things.

このような構成からなる定量噴射機構および、当該定量噴射機構を備えた圧縮ガス使用のエアゾール式製品を本発明の対象としている。 The quantitative injection mechanism having such a configuration and the aerosol type product using compressed gas provided with the quantitative injection mechanism are the subject of the present invention.

本発明はこのように、操作部本体を例えば押圧操作してステムの弁部分（流入弁）を開き、このときの容器本体の圧縮ガスの作用で内容物が定量室画定用のピストンへの加圧室に流入して当該ピストンを定量室容積の縮小方向に移動させ、この移動にともない、前回の定量噴射動作の終了段階に定量室に収納済みの内容物が外部空間に噴射されるようにしているので、圧縮ガスを収納したエアゾール式製品における定量噴射動作の具体化，確実化を図ることができる。 In this way, the present invention thus opens the stem valve portion (inflow valve) by, for example, pressing the operating portion main body, and the contents are added to the piston for defining the quantitative chamber by the action of the compressed gas in the container main body at this time. The piston flows into the pressure chamber and moves the piston in the direction of reducing the volume of the metering chamber.With this movement, the contents stored in the metering chamber are injected into the external space at the end of the previous metering injection operation. Therefore, it is possible to achieve the specific and reliable quantitative injection operation in the aerosol type product containing the compressed gas.

また、ステム側部材の構成要素をステム本体部とこれに嵌合するステム側基部としているので、既存のステムをそのままステム本体部に用いることができる。 Further, since the constituent elements of the stem side member are the stem main body part and the stem side base part fitted to the stem main body part, the existing stem can be used as it is for the stem main body part.

また、定量噴射動作の終り段階で定量室のいわば出力側をシールする、すなわち定量室とその下流側で噴射口にいたる通路域との連続性を遮断することによりアフタードローを防止できるようにしているので、エアゾール式製品使用時における一層の利便化を図ることができる。 In addition, the so-called output side of the metering chamber is sealed at the end of the metering injection operation, that is, the continuity between the metering chamber and the passage area leading to the injection port on the downstream side can be blocked to prevent after-draw. Therefore, it is possible to further improve the convenience when using aerosol type products.

図１乃至図７を用いて本発明を実施するための最良の形態を説明する。 The best mode for carrying out the present invention will be described with reference to FIGS.

ここで、
図１は、本発明の定量噴射機構（その１）の静止モード（押しボタンが押圧操作されていなくて、ステム側の上流弁は閉じ、押しボタン側の下流弁は開いた状態）を示し、
図２は、図１の押しボタンが押圧操作されて静止モードから定量噴射モードへ移行するときの初期段階（押しボタンのみが少し下動してステム側と一体化した状態）を示し、
図３は、図２に続く定量噴射モード（押しボタンおよびステムはそれぞれ下死点まで移動して上流弁が開き、容器内部の圧縮ガスの作用で容器内容物が加圧室に流入して定量室用ピストンを上動させることにより、前回の静止モード復帰時に定量室に流入済みの内容物（図５参照）が噴射口の方に移動する状態）を示し、
図４は、図３の内容物定量噴射終了後に押しボタンの押圧操作が解除されて図３の定量噴射モードから図２の段階まで復帰した状態（押しボタン側およびステム側が一体のままステムの上死点まで復帰して、上流弁は閉じた状態）を示し、
図５は、図４の押しボタンがその上死点までさらに上動し、かつ、定量室用ピストンがバネの作用で下動して図１の静止モード直前の位置まで復帰した状態（加圧室の内容物や噴射口への通路部分の残留内容物が定量室に流入している状態）を示し、
図６は、本発明の定量噴射機構（その２：アフタードロー防止用の弁部材１５を設けたタイプ）の静止モード（押しボタンが押圧操作されていなくて、ステム側の上流弁は閉じ、押しボタン側の下流弁は開いた状態）を示し、
図７は、図６の場合の定量噴射モードの最終段階（押しボタンの押圧操作は継続されて上流弁が開いたままで、かつ、定量室用ピストンがその最上位置に移動してアフタードロー防止用の弁部材１５と密接することにより定量室とその下流側の内容物通路域とがいわば遮断されたシール状態）を示している。 here,
FIG. 1 shows a stationary mode (the push button is not pressed, the stem-side upstream valve is closed, and the push-button-side downstream valve is open) of the metering injection mechanism (part 1) of the present invention,
FIG. 2 shows an initial stage (a state in which only the push button is moved downward and integrated with the stem side) when the push button of FIG.
FIG. 3 shows a quantitative injection mode following FIG. 2 (the push button and the stem move to the bottom dead center, the upstream valve opens, and the contents of the container flow into the pressurizing chamber by the action of the compressed gas inside the container. By moving the chamber piston upward, the content (see FIG. 5) that has already flowed into the metering chamber when returning to the previous stationary mode is shown).
FIG. 4 shows a state in which the pressing operation of the push button is released after the quantitative injection of the content in FIG. 3 and the state returns to the stage of FIG. 2 from the quantitative injection mode in FIG. The upstream valve is closed after returning to the dead point)
FIG. 5 shows a state in which the push button in FIG. 4 is further moved up to its top dead center and the piston for the metering chamber is moved down by the action of the spring and returned to the position immediately before the stationary mode in FIG. The contents of the chamber and the residual contents of the passage to the injection port flow into the metering chamber)
FIG. 6 shows a stationary mode of the constant injection mechanism of the present invention (part 2: a type provided with a valve member 15 for preventing after-drawing) (the push button is not pressed, the upstream valve on the stem side is closed and pushed). The button side downstream valve is open)
FIG. 7 shows the final stage of the metering injection mode in the case of FIG. 6 (the push button pressing operation is continued and the upstream valve remains open, and the metering chamber piston moves to its uppermost position to prevent after-draw. This shows a sealed state in which the metering chamber and the content passage area on the downstream side thereof are blocked by being in close contact with the valve member 15.

図１〜図７で用いるアルファベット付き参照番号の構成要素（例えば通路域２ａ）は原則として、当該参照番号の数字部分の構成要素（例えばステム２）の一部であることを示している。 The components of the reference numbers with alphabets (for example, the passage area 2a) used in FIGS. 1 to 7 indicate that they are part of the components (for example, the stem 2) of the numeral portions of the reference numbers in principle.

図１〜図５において、
Ａは下流弁の先（直下流域）の押しボタン側に形成された定量室（図１参照），
Ｂは定量室用ピストンに上方向の力を付与するための加圧室，
Ｃは定量室から外部空間への内容物放出状況（図３参照），
Ｄは容器本体から加圧室への内容物流入状況（図３参照），
Ｅは静止モード復帰時の定量室への内容物流入状況（図５参照），
１は後述の内容物および噴射用ガスを収納したエアゾール式製品の容器本体（図示省略）の開口端部側に取り付けられたマウンティングキャップ，
２はその下側部分が（マウンティングキャップ１の中央部分に取り付けられた）周知のハウジング（図示省略）の内部に配設され、かつ、周知のコイルスプリング（図示省略）の弾性作用で図示上方向に付勢されて周知のステムガスケット（図示省略）とともに弁作用を呈するステム，
２ａは内容物の通路域，
２ｂは加圧室Ｂへと通じる上流弁を構成する横孔部，
３はステム２の流出側外周面と強く嵌合した状態で図示上下方向に連動して後述のボタン側基部とともに弁作用（定量室Ａへの流入弁作用）を呈するステム側基部，
３ａはステム２と嵌合する内側下筒状部，
３ｂは内外径ともに内側下筒状部３ａより小さくて内容物の通路域を構成する内側上筒状部，
３ｃは内側下筒状部３ａと内側上筒状部３ｂとの環状接続部分の周方向に飛び飛びに形成された内容物通過用の孔部，
３ｄは内側下筒状部３ａの外周面から外方に続く環状の連結部分，
３ｅは連結部分３ｄの上面側に形成されてその上端部分が後述のボタン側基部５（大径鞘状部５ｂ）の内周面に密接する逆スカート部，
３ｆは連結部分３ｄの逆スカート部３ｅよりも外側の周方向に複数形成されて後述のボタン側基部５（脚部５ｆ）を案内・保持する孔部，
３ｇは孔部３ｆの外側下面部分からなり後述の押しボタン４の（当該ステム側基部に対する）最上位置を規定して後述のボタン側基部５が当該ステム側基部から抜けるのを防止するための上段部分，
３ｈは後述の押しボタン４を案内する外側筒状部，
３ｊは連結部分３ｄの上面に間歇的環状の態様で複数個（例えば４個）形成されて後述のピストン６をその最下位置に保持する起立受け部，
４は上下動タイプの押しボタン，
４ａは当該押しボタンの天井面の略中央に形成された筒状の垂下部，
４ｂは垂下部４ａの中の（内容物）通路域，
５は押しボタン４の垂下部４ａの下側内周面と強く嵌合した状態で図示上下方向に連動してステム側基部３とともに弁作用を呈する筒状のボタン側基部，
５ａは垂下部４ａと嵌合する上側の小径筒状部，
５ｂは小径筒状部５ａの下端側から続く大径鞘状部，
５ｃは大径鞘状部５ｂの天井中央側の台地状部分に複数形成されて小径筒状部５ａの内部空間域に通じる径方向の内側溝状部，
５ｄは大径鞘状部５ｂの天井中央側の台地状部分に形成されて内側上筒状部３ｂの上開口部とともに下流弁を構成する（テーパ状外周面を持った）弁作用部，
５ｅは大径鞘状部５ｂの天井縁側に沿って飛び飛びに形成された凸状部，
５ｆは大径鞘状部５ｂの下端から下方向に複数形成された脚部，
５ｇは脚部５ｆそれぞれの外面に形成されてステム側基部３の上段部分３ｇに対応した下段部分，
５ｈは後述のコイル状のバネ７を受ける天井面部分，
６はステム側基部３（内側上筒状部３ｂ）の外周面およびボタン側基部５（大径鞘状部５ｂ）の内周面に密接しながら上下動し、また、定量室Ａおよび加圧室Ｂそれぞれの構成要素でもある環状のピストン（定量室用ピストン），
６ａは下端部分が内側上筒状部３ｂの外周面に密接する擂鉢周面状部，
６ｂは下端部分が大径鞘状部５ｂの内周面に密接するスカート部，
７は大径鞘状部５ｂの天井中央側の台地状部分および天井縁側の凸状部５ｅの間の環状凹状部と、ピストン６の上面側の環状凹状部との間に設けられて、上記コイルスプリングの上方向へのステム付勢力や、定量噴射モードで加圧室Ｂを介して容器内部の圧縮ガスが当該ピストンに与える上方向への付勢力よりも十分に弱い弾性力を有し、ボタン側基部５に対して当該ピストンを下方向に付勢するコイル状のバネ
８は押しボタン４の流出側に取り付けられた筒状の噴射用ピース，
８ａは内容物の通路域，
８ｂは内容物の噴射口，
をそれぞれ示している。 1 to 5,
A is a metering chamber (see FIG. 1) formed on the push button side of the tip of the downstream valve (direct downstream region),
B is a pressurizing chamber for applying an upward force to the piston for the metering chamber,
C shows the contents released from the quantitative chamber to the external space (see Fig. 3).
D is the content inflow from the container body to the pressurization chamber (see Fig. 3),
E is the contents flow into the quantitative chamber when returning to the stationary mode (see Fig. 5).
1 is a mounting cap attached to the opening end side of a container body (not shown) of an aerosol type product containing the contents and the gas for injection described later;
The lower portion 2 is disposed inside a known housing (not shown) (attached to the central portion of the mounting cap 1) and is upwardly shown by the elastic action of a known coil spring (not shown). Stem that is energized by a well-known stem gasket (not shown) and exhibits valve action,
2a is the passage area for the contents,
2b is a side hole portion constituting an upstream valve leading to the pressurizing chamber B,
3 is a stem-side base that exhibits a valve action (an inflow valve action to the metering chamber A) together with a button-side base that will be described later in conjunction with the vertical direction shown in the figure in a state of being tightly fitted to the outflow side outer peripheral surface of the stem 2;
3a is an inner lower cylindrical part fitted to the stem 2,
3b is an inner upper cylindrical part that is smaller than the inner lower cylindrical part 3a in both inner and outer diameters and constitutes a passage area for the contents,
3c is a hole for passing contents formed so as to jump in the circumferential direction of the annular connecting portion between the inner lower cylindrical portion 3a and the inner upper cylindrical portion 3b;
3d is an annular connecting portion extending outward from the outer peripheral surface of the inner lower cylindrical portion 3a,
3e is a reverse skirt portion formed on the upper surface side of the connecting portion 3d, the upper end portion of which is in close contact with the inner peripheral surface of a button side base portion 5 (large diameter sheath portion 5b) described later,
3f is a hole that is formed in a plurality in the circumferential direction outside the reverse skirt 3e of the connecting portion 3d, and guides and holds a button side base 5 (leg 5f) described later,
3g comprises an outer lower surface portion of the hole 3f, and defines an uppermost position (relative to the stem side base) of the push button 4 described later to prevent the button side base 5 described later from coming out of the stem side base. portion,
3h is an outer cylindrical portion for guiding a push button 4 described later,
3j is an upright receiving portion that is formed in a plurality of (for example, four) intermittently on the upper surface of the connecting portion 3d and holds the piston 6 described later at its lowest position;
4 is a vertical push button.
4a is a cylindrical hanging portion formed substantially at the center of the ceiling surface of the push button,
4b is the (contents) passage area in the hanging part 4a,
5 is a cylindrical button side base portion that exhibits a valve action together with the stem side base portion 3 in conjunction with the vertical direction in the figure in a state of being strongly fitted to the lower inner peripheral surface of the hanging portion 4a of the push button 4.
5a is an upper small-diameter cylindrical portion fitted to the hanging portion 4a,
5b is a large-diameter sheath-like part continuing from the lower end side of the small-diameter cylindrical part 5a,
5c is a radially inner groove-shaped portion that is formed in a plurality of plateau-like portions on the ceiling center side of the large-diameter sheath-shaped portion 5b and communicates with the internal space of the small-diameter cylindrical portion 5a.
5d is a valve action portion (having a tapered outer peripheral surface) that is formed in a plateau-like portion on the center side of the ceiling of the large-diameter sheath-like portion 5b and constitutes a downstream valve together with the upper opening of the inner upper cylindrical portion 3b.
5e is a convex portion formed so as to jump along the ceiling edge side of the large-diameter sheath-like portion 5b.
5f is a plurality of legs formed downward from the lower end of the large-diameter sheath 5b,
5g is a lower part formed on the outer surface of each leg part 5f and corresponding to the upper part 3g of the stem side base 3;
5h is a ceiling surface portion that receives a coiled spring 7 described later,
6 moves up and down in close contact with the outer peripheral surface of the stem-side base 3 (inner upper cylindrical portion 3b) and the inner peripheral surface of the button-side base 5 (large diameter sheath-like portion 5b). An annular piston (piston for metering chamber) that is also a component of each chamber B,
6a is a mortar peripheral surface portion whose lower end portion is in close contact with the outer peripheral surface of the inner upper cylindrical portion 3b,
6b is a skirt portion whose lower end portion is in close contact with the inner peripheral surface of the large-diameter sheath-like portion 5b;
7 is provided between the annular concave portion between the plateau-like portion on the ceiling center side of the large-diameter sheath-like portion 5b and the convex portion 5e on the ceiling edge side, and the annular concave portion on the upper surface side of the piston 6, An upward biasing force of the coil spring, and an elastic force sufficiently weaker than the upward biasing force applied to the piston by the compressed gas inside the container via the pressurizing chamber B in the constant injection mode, A coiled spring 8 for biasing the piston downward with respect to the button side base 5 is a cylindrical injection piece attached to the outflow side of the push button 4;
8a is the passage area of the contents,
8b is a jet of contents,
Respectively.

ここで定量室Ａは、内側上筒状部３ｂ（ステム側基部）の上側外周面，大径鞘状部５ｂ（ボタン側基部）の天井面，上側内周面や、ピストン６の上面などによって画定される空間域であり、ステム側からの内容物流入口（内側上筒状部３ｂの上開口部）や押しボタン側への内容物流出口（内側溝状部５ｃ）を備えている。 Here, the fixed amount chamber A is formed by the upper outer peripheral surface of the inner upper tubular portion 3b (stem side base), the ceiling surface of the large diameter sheath 5b (button side base), the upper inner peripheral surface, the upper surface of the piston 6, and the like. It is a demarcated space area, and includes a content distribution inlet from the stem side (upper opening of the inner upper cylindrical portion 3b) and a content distribution outlet to the push button side (inner groove-shaped portion 5c).

加圧室Ｂは、内側上筒状部３ｂ（ステム側基部）の下側外周面，連結部分３ｄ（ステム側基部）の上面，逆スカート部３ｅ（ステム側基部），大径鞘状部５ｂ（ボタン側基部）の下側内周面や、ピストン６の下面などによって画定される空間域であり、内容物の流入口・流出口（孔部３ｃ）を備えている。 The pressurizing chamber B includes a lower outer peripheral surface of the inner upper cylindrical portion 3b (stem side base portion), an upper surface of the connecting portion 3d (stem side base portion), a reverse skirt portion 3e (stem side base portion), and a large-diameter sheath portion 5b. This is a space area defined by the lower inner peripheral surface of the (button side base portion), the lower surface of the piston 6, and the like, and includes an inlet / outlet (hole 3c) for contents.

また、ステム２，ステム側基部３，押しボタン４，ボタン側基部５，ピストン６および噴射用ピース８などはポリプロピレン，ポリエチレン，ポリアセタール，ナイロン，ポリブチレンテレフタレートなどからなるプラスチック製のものである。また、ステム側基部３の上段部分３ｇやボタン側基部５（脚部５ｆ）の下段部分５ｇは外力を受けることにより変形し、当該外力を受けなくなると元の状態に復帰しようとする。 The stem 2, stem side base 3, push button 4, button side base 5, piston 6 and injection piece 8 are made of plastic such as polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate. Further, the upper part 3g of the stem-side base 3 and the lower part 5g of the button-side base 5 (leg part 5f) are deformed by receiving an external force, and return to the original state when the external force is not received.

図１の静止モードでは、通常のエアゾール式製品と同様にステム２がコイルスプリング（図示省略）の弾性力に基づいて上動し、ステムの横孔部２ｂは周知のステムガスケット（図示省略）で閉塞されている。なお、この静止モードについての説明内容が図６の場合にも同様に妥当するのは勿論である。 In the stationary mode of FIG. 1, the stem 2 moves up based on the elastic force of a coil spring (not shown) as in a normal aerosol product, and the side hole 2b of the stem is a well-known stem gasket (not shown). It is blocked. Needless to say, the description of the still mode is also valid in the case of FIG.

押しボタン４およびこれと嵌合したボタン側基部５はそれぞれバネ７の付勢力により上死点まで移動して、当該ボタン側基部の下段部分５ｇがステム側基部３の上段部分３ｇに係止され、また、当該ボタン側基部の弁作用部５ｄが当該ステム側基部の内側上筒状部３ｂの上開口部分から離間した状態になっている。 The push button 4 and the button side base 5 fitted thereto are moved to the top dead center by the urging force of the spring 7, and the lower part 5 g of the button side base is locked to the upper part 3 g of the stem side base 3. Moreover, the valve action part 5d of the button side base part is in a state of being separated from the upper opening part of the inner upper cylindrical part 3b of the stem side base part.

すなわち、横孔部２ｂおよびステムガスケットからなる上流弁は「閉」状態で、弁作用部５ｄおよび内側上筒状部３ｂの上開口部分からなる下流弁は「開」状態である。 That is, the upstream valve composed of the lateral hole portion 2b and the stem gasket is in the “closed” state, and the downstream valve composed of the upper opening portion of the valve action portion 5d and the inner upper cylindrical portion 3b is in the “open” state.

また、定量室Ａには前回の定量噴射モードから静止モードへの復帰時に内容物が流入している（図５参照）。ピストン６は、バネ７の下方向への付勢力によりその最下位置に移動した状態で、起立受け部３ｊに保持されている。 In addition, the contents flow into the metering chamber A when returning from the previous metering mode to the stationary mode (see FIG. 5). The piston 6 is held by the standing receiving portion 3j in a state where the piston 6 is moved to its lowest position by the downward biasing force of the spring 7.

図１の静止モードの押しボタン４を押圧操作すると、
(11)先ず、押しボタン４のみがバネ７の弱い弾性力に抗しながら下動してボタン側基部５の弁作用部５ｄがステム側基部３の内側上筒状部３ｂの上開口部分を閉じた状態、すなわち下流弁が閉じた状態となり（図２参照）、
(12)その後、当該下流弁の閉状態により押しボタン４といわば一体化した形のステム側基部３およびステム２が周知の上記コイルスプリングの強い弾性力に抗しながら下動して、横孔部２ｂおよびステムガスケットからなる上流弁が開き（図３参照）、
(13)その結果、容器本体の内容物が圧縮ガスの作用により加圧室Ｂへと流入してピストン６を押し上げ、定量室Ａに入っていた内容物を噴射孔８ｂから外部空間に噴射する（図３参照）。 When pressing the push button 4 in the stationary mode of FIG.
(11) First, only the push button 4 moves down while resisting the weak elastic force of the spring 7 so that the valve action portion 5d of the button side base portion 5 opens the upper opening portion of the inner upper cylindrical portion 3b of the stem side base portion 3. Closed state, that is, the downstream valve is closed (see FIG. 2),
(12) Thereafter, when the downstream valve is closed, the stem-side base 3 and the stem 2 that are integrated with the push button 4 are moved downward against the strong elastic force of the well-known coil spring, and the horizontal hole The upstream valve consisting of the part 2b and the stem gasket opens (see FIG. 3),
(13) As a result, the content of the container main body flows into the pressurizing chamber B by the action of the compressed gas, pushes up the piston 6, and injects the content contained in the metering chamber A into the external space from the injection hole 8b. (See FIG. 3).

そして、押しボタン４の押圧操作を解除すると、
(21)先ず、強い弾性力を持つ上記コイルスプリングの作用により、下流弁が閉じたままのステム２，ステム側基部３，ボタン側基部５および押しボタン４からなる一体化物が図２の状態に復帰して上流弁は「閉」となり、一方、ピストン６は略その最上位置に移動したままの状態が続き（図４参照）、
(22)その後、弱い弾性力を持つバネ７の作用により、ボタン側基部５および押しボタン４のみがさらに上動して（ステム２およびステム側基部３は上動せずに）下流弁が開くとともにピストン６が下動し（図５参照）、
(23)その結果、ピストン６で押し出される形となる加圧室側の内容物が定量室Ａに流入するとともに、ボタン側基部５の上動などにともなう当該定量室の容積増加によって生じるバックサクション作用で小径筒状部５ａから先の（噴射口８ｂにいたる）通路域の残留内容物が当該定量室にいわば逆流する。 And when the pressing operation of the push button 4 is released,
(21) First, the integrated structure comprising the stem 2, the stem side base 3, the button side base 5 and the push button 4 with the downstream valve closed is brought into the state shown in FIG. After returning, the upstream valve is “closed”, while the piston 6 continues to move to its uppermost position (see FIG. 4).
(22) Thereafter, only the button-side base 5 and the push button 4 are further moved up by the action of the spring 7 having a weak elastic force (the stem 2 and the stem-side base 3 do not move up), and the downstream valve is opened. At the same time, the piston 6 moves downward (see FIG. 5),
(23) As a result, the contents on the pressurizing chamber side pushed out by the piston 6 flow into the metering chamber A, and back suction caused by an increase in the volume of the metering chamber due to the upward movement of the button side base 5 or the like. As a result, the residual contents in the passage area (from the injection port 8b) ahead of the small-diameter cylindrical portion 5a flow back into the metering chamber.

図２の（静止モードから）定量噴射モードへの移行初期では、ボタン側基部５が図１の静止モード位置から下がった分だけ定量室Ａの容積が減少しており、この減少分相当の定量室内容物がボタン側基部天井面の複数の内側溝状部５ｃを経て押しボタン４の通路域４ｂの方に流出する。 At the beginning of the transition to the quantitative injection mode (from the stationary mode) in FIG. 2, the volume of the quantitative chamber A is reduced by the amount that the button side base 5 is lowered from the stationary mode position in FIG. The room contents flow out toward the passage area 4b of the push button 4 through the plurality of inner grooves 5c on the button side base ceiling surface.

図３の定量噴射モードでは、上流弁が開いて容器内部（図示省略）と加圧室Ｂとが連通し、容器本体に収納された周知の圧縮ガスの作用で容器本体内容物が「横孔部２ｂ−通路域２ａ−孔部３ｃ」を経て加圧室Ｂに流入する（矢印Ｄ参照）。なお、このときの下流弁は閉じている。 3, the upstream valve is opened, the interior of the container (not shown) and the pressurizing chamber B are communicated with each other, and the contents of the container main body are changed to “horizontal holes by the action of the well-known compressed gas stored in the container main body. It flows into the pressurizing chamber B through “part 2b—passage area 2a—hole 3c” (see arrow D). At this time, the downstream valve is closed.

この流入（圧縮ガスの作用）により定量室Ａと加圧室Ｂとのいわば境界部分であるピストン６が押し上げられ、これにともなって定量室Ａに収納済みの内容物が「内側溝状部５ｃ−小径筒状部５ａ−通路域４ｂ−通路域８ａ−噴射口８ｂ」を経て外部空間に噴射される。なお、上方に移動するピストン６は、その上面部分が大径鞘状部５ｂの天井中央側の（内側溝状部５ｃを構成する）径方向凸状部分や天井縁側の凸状部５ｅに当接した状態で停止する。 This inflow (the action of the compressed gas) pushes up the piston 6 which is a so-called boundary between the metering chamber A and the pressurizing chamber B, and as a result, the contents stored in the metering chamber A are “inner groove-shaped portion 5c. -Small diameter cylindrical part 5a-Passage area 4b-Passage area 8a-Injection port 8b "It injects into external space. Note that the piston 6 that moves upward has an upper surface portion that is in contact with a radial convex portion on the ceiling center side of the large-diameter sheath-like portion 5b (which constitutes the inner groove-like portion 5c) or a convex portion 5e on the ceiling edge side. Stop in contact.

図４の静止モードへの復帰開始段階では、下流弁が閉じてステム２と押しボタン４とがいわば一体化したままステム付勢用の上記コイルスプリングの作用で当該ステムの静止モード位置まで復帰している。すなわち、上流弁を構成する横孔部２ｂがそれまでの「開」から「閉」に移行した状態である。なお、このときの加圧室Ｂには定量噴射モードで容器本体から流入した内容物が収納されている。 At the start of returning to the stationary mode in FIG. 4, the downstream valve is closed and the stem 2 and the push button 4 are integrated, so that the stem spring returns to the stationary mode position by the action of the coil spring for biasing the stem. ing. That is, the side hole portion 2b constituting the upstream valve is in a state of shifting from “open” to “close”. In addition, the content which flowed in from the container main body in the fixed injection mode is accommodated in the pressurizing chamber B at this time.

横孔部２ｂが閉じることにより容器内部の圧縮ガスからのピストン６に対する上方向駆動力もなくなるので、ボタン側基部５およびピストン６はそれぞれバネ７の弾性力で離間する方向に移動する。すなわちステム側基部３に対して、ボタン側基部５は上方向に移動し、ピストン６は下方向に移動する。 Since the upward driving force on the piston 6 from the compressed gas inside the container is eliminated by closing the horizontal hole portion 2b, the button side base portion 5 and the piston 6 each move in a direction away from each other by the elastic force of the spring 7. That is, with respect to the stem side base 3, the button side base 5 moves upward, and the piston 6 moves downward.

図５の静止モードへの復帰直前段階では、このボタン側基部５の上方向への移動により下流弁の弁作用部５ｄがステム側基部３の流出口（＝定量室Ａへの流入口）である内側上筒状部３ｂから離間し、かつ、このピストン６の下方向の移動にともなって定量室Ａの容積が漸次増加している。 In the stage immediately before returning to the stationary mode in FIG. 5, the valve action part 5d of the downstream valve is moved at the outlet of the stem side base 3 (= inlet to the metering chamber A) by the upward movement of the button side base 5. The volume of the metering chamber A is gradually increased as the piston 6 moves away from the inner upper cylindrical portion 3b and moves downward.

そのため図４において、加圧室Ｂや内側上筒状部３ｂの通路域などに入っている内容物は主にピストン６に押されることにより、また、図４のボタン側基部５の小径筒状部５ａから噴射口８ｂにいたる通路域の残留内容物は定量室Ａの容積増加にともなうバックサクション作用によりそれぞれ定量室内部に流入する。 Therefore, in FIG. 4, the contents contained in the pressurizing chamber B and the passage area of the inner upper cylindrical portion 3b are mainly pushed by the piston 6, and the small diameter cylindrical shape of the button side base portion 5 of FIG. The residual contents in the passage area from the portion 5a to the injection port 8b flow into the inside of the quantitative chamber due to the back suction action as the volume of the quantitative chamber A increases.

図示の定量噴射機構を組み立てるには、例えば、
(31)ステム側基部３の内側上筒状部３ｂに環状のピストン６を装着し、
(32)この装着後のピストン６の凹状部にコイル状のバネ７をセットし、
(33)このセット後のステム側基部３の孔部３ｆにその上方からボタン側基部５の脚部５ｆおよび下段部分５ｇを差し込んでステム側基部３とボタン側基部５とを一体化し、
(34)この一体化後のボタン側基部５の小径筒状部５ａに（噴射用ピース８を組み込み済みの）押しボタン４の筒状の垂下部４ａを嵌合させてステム側基部３から押しボタン４までの操作ユニットを形成し、
(35)この操作ユニットをステム２に取り付ける、
といった作業手順をとればよい。 To assemble the illustrated quantitative injection mechanism, for example,
(31) An annular piston 6 is attached to the inner upper cylindrical portion 3b of the stem side base portion 3,
(32) A coiled spring 7 is set in the concave portion of the piston 6 after mounting,
(33) The stem-side base 3 and the button-side base 5 are integrated by inserting the leg portion 5f and the lower-stage portion 5g of the button-side base 5 into the hole 3f of the stem-side base 3 after the setting,
(34) The cylindrical hanging portion 4a of the push button 4 (with the injection piece 8 already incorporated) is fitted into the small-diameter tubular portion 5a of the button-side base 5 after this integration, and pushed from the stem-side base 3 Form an operation unit up to button 4,
(35) Attach this operation unit to the stem 2.
The work procedure is as follows.

以上のステム２およびステム側基部３の一体化物や、押しボタン４およびボタン側基部５の一体化物をそれぞれ１部材の形にしてもよい。 The integrated product of the stem 2 and the stem-side base 3 and the integrated product of the push button 4 and the button-side base 5 may each be formed into one member.

図６および図７は定量噴射モードの最終段階での噴射口８ｂからのアフタードロー（液垂れ）を防止するための弁部材１５を設けたタイプの定量噴射機構に関するものである。なお、図６は静止モードを示し、図７は定量噴射モードの最終段階を示している。 FIGS. 6 and 7 relate to a quantitative injection mechanism of a type provided with a valve member 15 for preventing after-draw (liquid dripping) from the injection port 8b at the final stage of the constant injection mode. FIG. 6 shows the stationary mode, and FIG. 7 shows the final stage of the quantitative injection mode.

ここで新たに用いる参照番号は以下の通りであり、その他のマウンティングキャップ１，ステム２，押しボタン４，コイル状のバネ７および噴射用のピース８、ならびにこれらのアルファベット付き参照番号は図１〜図５のそれと同じものを用いる。 The reference numbers newly used here are as follows, and the other mounting cap 1, stem 2, push button 4, coiled spring 7 and injection piece 8, and these alphabetic reference numbers are shown in FIGS. The same thing as that of FIG. 5 is used.

図６および図７において、
Ａ’は下流弁の先（直下流域）に形成された定量室，
Ｂ’は定量室用ピストンに上方向の力を付与するための加圧室，
Ｄ’は容器本体から加圧室への内容物流入状況，
１１はステム２の流出側外周面と強く嵌合した状態で図示上下方向に連動して後述のボタン側基部１３とともに弁作用（定量室Ａへの流入弁作用）を呈するステム側基部，
１１ａはステム２と嵌合する内側下筒状部，
１１ｂは内外径ともに内側下筒状部１１ａより小さくて内容物の通路域を構成する内側上筒状部，
１１ｃは内側下筒状部１１ａと内側上筒状部１１ｂとの環状接続部分の周方向に飛び飛びに形成された内容物通過用の孔部，
１１ｄは内側下筒状部１１ａから外方に続く外側筒状部，
１２はステム側基部１１（外側筒状部１１ｄ）の上端部分に取り付けられて定量室Ａ’を形成する筒状の天板状部材，
１２ａは定量室Ａ’の天井面外側に相当する周方向部分に複数形成されて定量噴射モードの最終段階における後述のピストン１４と当接してその最上位置を規定する外側凸状部，
１２ｂは定量室の天井面内側に相当する周方向部分に飛び飛びに形成されて定量噴射モードの最終段階における後述のピストン１４と当接する内側凸状部，
１２ｃは当該天板状部材の上面中央部分に後述のボタン側基部１３を囲む形で設けられてその内周面に後述の弁部材１５のスカート部１５ａが密接する天板中央筒状部，
１２ｄは静止モードの後述の弁部材１５を受けるため当該天板中央筒状部の内周面に形成された環状の段部，
１２ｅはバネ７の上側端部を受ける環状の溝状部，
１３は押しボタン４の垂下部４ａの下側内周面と強く嵌合した状態で図示上下方向に連動してステム側基部１１とともに弁作用を呈する鞘状のボタン側基部，
１３ａは垂下部４ａと嵌合する上側筒状部，
１３ｂは当該ボタン側基部の下側周面部分に複数形成されて（当該ボタン側基部の）内部空間域と定量室Ａ’とを連通させるための孔部，
１３ｃは当該ボタン側基部の下端周面部分に形成されて内側上筒状部１１ｂの上開口部とともに下流弁を構成する（テーパ状外周面を持った）弁作用部，
１３ｄは孔部１３ｂの直下方の周面部分に形成されて静止モードで後述の弁部材１５の擂鉢周面状部１５ｂが密接する環状の下方段部，
１３ｅは孔部１３ｂの直上方の周面部分に形成されて定量噴射モードで擂鉢周面状部１５ｂが密接する環状のテーパ面，
１３ｆは孔部１３ｂより上方の周面部分に形成されて定量噴射モードで後述の弁部材１５の逆擂鉢周面状部１５ｃが密接する環状の上方下側段部，
１３ｇは孔部１３ｂより上方の周面部分に形成されて定量噴射モードで後述の弁部材１５の外側上端部１５ｄが当接する環状の上方上側段部，
１４はステム側基部１１の周面（内側上筒状部１１ｂの外周面および外側筒状部１１ｄの内周面）に密接しながら上下動し、また、定量室Ａ’および加圧室Ｂ’それぞれの構成要素でもある環状のピストン（定量室用ピストン），
１４ａは下端部分が内側上筒状部１１ｂの外周面に密接する擂鉢周面状部，
１４ｂは下端部分が外側筒状部１１ｄの内周面に密接するスカート部，
１４ｃは上端部分が外側筒状部１１ｄの内周面に密接し、かつ、上面部分が定量噴射モードの最終段階において天板状部材１２の天井面と当接する逆スカート部，
１４ｄは定量噴射モードの最終段階において天板状部材１２の内側凸状部１２ｂと当接する環状の段部，
１４ｅは上端内縁部分が定量噴射モードの最終段階において後述の弁部材１５の擂鉢周面状部１５ｂと密接するシール作用筒状部，
１４ｆは当該ピストンの下面部分の周方向に飛び飛びに例えば四個形成されて静止モードのステム側基部１１の上底面部分と当接して保持されるリブ状部，
１５は定量室Ａ’を形成するとともに上下動できる態様で天板状部材１２の外側筒状部１２ｃとボタン側基部１３との間の空間域に設けられたアフタードロー防止用の弁部材，
１５ａは下端部分が外側筒状部１２ｃの内周面と密接するスカート部，
１５ｂは静止モードではボタン側基部１３の下方段部１３ｄと密接し、定量噴射モードでは当該ボタン側基部のテーパ面１３ｅと密接する擂鉢周面状部，
１５ｃは静止モードではボタン側基部１３の（テーパ面１３ｅと上方下側段部１３ｆとの間の）外周面と密接し、定量噴射モードでは当該ボタン側基部の上方下側段部１３ｆと密接する逆擂鉢周面状部，
１５ｄは静止モードでは天板状部材１２の段部１２ｄと当接し、定量噴射モードではボタン側基部１３の上方上側段部１３ｇと当接する外側上端部，
１６は押しボタン４の天井面部分と天板状部材１２の上面部分との間に設けられて、上記コイルスプリングの上方向へのステム付勢力よりも十分に弱い弾性力を有し、当該天板状部材に対して当該押しボタンを上方向に付勢するコイル状のバネ，
をそれぞれ示している。 6 and 7,
A ′ is a quantitative chamber formed at the tip of the downstream valve (direct downstream area),
B ′ is a pressurizing chamber for applying an upward force to the piston for the metering chamber,
D 'is the contents inflow from the container body to the pressurizing chamber,
11 is a stem-side base that exhibits a valve action (inflow valve action to the metering chamber A) together with a button-side base 13 to be described later in conjunction with the vertical direction shown in the figure in a state of being tightly fitted to the outer peripheral surface of the stem 2
11a is an inner lower cylindrical part fitted to the stem 2,
11b is an inner upper cylindrical part that is smaller than the inner lower cylindrical part 11a in both inner and outer diameters and constitutes a passage area for contents,
11c is a hole for passing contents formed so as to jump in the circumferential direction of the annular connecting portion between the inner lower cylindrical portion 11a and the inner upper cylindrical portion 11b,
11d is an outer cylindrical part extending outward from the inner lower cylindrical part 11a,
12 is a cylindrical top plate-like member that is attached to the upper end portion of the stem-side base 11 (outer cylindrical portion 11d) and forms the metering chamber A ′;
12a is a plurality of outer convex portions that are formed in a plurality of circumferential portions corresponding to the outside of the ceiling surface of the metering chamber A ′ and abut against a later-described piston 14 in the final stage of the metering injection mode to define the uppermost position;
12b is an inner convex portion that is formed in a circumferential manner corresponding to the inside of the ceiling surface of the metering chamber and is in contact with a later-described piston 14 in the final stage of the metering injection mode;
12c is a top plate central tubular portion that is provided at the center of the top surface of the top plate member so as to surround a button side base portion 13 to be described later, and a skirt portion 15a of a valve member 15 to be described later is in close contact with the inner peripheral surface thereof.
12d is an annular step formed on the inner peripheral surface of the central cylindrical portion of the top plate in order to receive a later-described valve member 15 in the stationary mode.
12e is an annular groove for receiving the upper end of the spring 7,
13 is a sheath-like button-side base that exhibits a valve action together with the stem-side base 11 in conjunction with the vertical direction in the figure in a state of being tightly fitted to the lower inner peripheral surface of the hanging portion 4a of the push button 4.
13a is an upper cylindrical part fitted to the hanging part 4a,
13b is a plurality of holes formed on the lower peripheral surface portion of the button side base, and a hole for communicating the internal space (of the button side base) with the metering chamber A ′;
13c is a valve action part (having a tapered outer peripheral surface) that is formed in the lower peripheral surface part of the button side base part and constitutes a downstream valve together with the upper opening of the inner upper cylindrical part 11b,
13d is an annular lower step portion formed in the peripheral surface portion directly below the hole portion 13b and in close contact with a mortar peripheral surface portion 15b of the valve member 15 described later in a stationary mode;
13e is an annular tapered surface that is formed on the peripheral surface portion directly above the hole 13b and in which the mortar peripheral surface portion 15b is in close contact in the constant injection mode;
13f is an annular upper lower step portion formed in a peripheral surface portion above the hole portion 13b and in close contact with a reverse bowl peripheral surface portion 15c of a valve member 15 described later in a constant injection mode,
13g is an annular upper upper step portion formed on the peripheral surface portion above the hole portion 13b and in contact with an outer upper end portion 15d of a later-described valve member 15 in a constant injection mode.
14 moves up and down in close contact with the peripheral surface of the stem-side base 11 (the outer peripheral surface of the inner upper cylindrical portion 11b and the inner peripheral surface of the outer cylindrical portion 11d), and the quantitative chamber A ′ and the pressurizing chamber B ′. An annular piston (quantitative chamber piston), which is also a component of each
14a is a bowl peripheral surface portion in which the lower end portion is in close contact with the outer peripheral surface of the inner upper cylindrical portion 11b,
14b is a skirt portion whose lower end portion is in close contact with the inner peripheral surface of the outer cylindrical portion 11d,
14c is a reverse skirt portion whose upper end portion is in close contact with the inner peripheral surface of the outer cylindrical portion 11d and whose upper surface portion is in contact with the ceiling surface of the top plate member 12 in the final stage of the quantitative injection mode;
14d is an annular step portion that comes into contact with the inner convex portion 12b of the top plate member 12 in the final stage of the quantitative injection mode;
14e is a sealing action cylindrical portion whose upper end inner edge portion is in close contact with the mortar peripheral surface portion 15b of the valve member 15 described later in the final stage of the quantitative injection mode,
14f is a rib-like portion that is formed, for example, in four jumps in the circumferential direction of the lower surface portion of the piston and is held in contact with the upper bottom surface portion of the stem-side base portion 11 in the stationary mode;
15 is a valve member for preventing after-drawing provided in a space region between the outer cylindrical portion 12c of the top plate-like member 12 and the button-side base portion 13 in a mode in which the fixed amount chamber A ′ is formed and can be moved up and down;
15a is a skirt portion whose lower end portion is in close contact with the inner peripheral surface of the outer cylindrical portion 12c,
15b is in close contact with the lower step portion 13d of the button-side base 13 in the stationary mode, and in the constant injection mode, the bowl-shaped peripheral portion that is in close contact with the tapered surface 13e of the button-side base;
15c is in close contact with the outer peripheral surface (between the tapered surface 13e and the upper lower step 13f) of the button side base 13 in the stationary mode, and in close contact with the upper lower step 13f of the button side base in the constant injection mode. Inverted bowl peripheral surface,
15d is an outer upper end portion that contacts the step portion 12d of the top plate member 12 in the stationary mode, and an upper upper step portion 13g of the button side base portion 13 in the fixed injection mode.
16 is provided between the ceiling surface portion of the push button 4 and the upper surface portion of the top plate member 12, and has an elastic force sufficiently weaker than the upward biasing force of the coil spring. A coiled spring for urging the push button upward against the plate-like member;
Respectively.

ここで定量室Ａ’は、内側上筒状部１１ｂ（ステム側基部）の上側外周面，ピストン１４の上面，外側筒状部１１ｄ（ステム側基部）の上側内周面，天板状部材１２の天井面，弁部材１５の下面や、ボタン側基部１３の下側外面などによって画定される空間域であり、ステム側からの内容物流入口（内側上筒状部１１ｂの上開口部）や押しボタン側への内容物流出口（孔部１３ｂ）を備えている。 Here, the fixed amount chamber A ′ includes the upper outer peripheral surface of the inner upper cylindrical portion 11b (stem side base), the upper surface of the piston 14, the upper inner peripheral surface of the outer cylindrical portion 11d (stem side base), and the top plate-like member 12. Is a space defined by the ceiling surface, the lower surface of the valve member 15, the lower outer surface of the button-side base 13, and the content distribution inlet (upper opening of the inner upper cylindrical portion 11b) or push from the stem side. A content distribution outlet (hole 13b) to the button side is provided.

加圧室Ｂ’は、内側上筒状部１１ｂ（ステム側基部）の下側外周面，外側筒状部１１ｄ（ステム側基部）の内底面および下側内周面や、ピストン１４の下面（スカート部１４ｂおよび擂鉢周面状部１４ａを含む）などによって画定される空間域であり、内容物の流入口・流出口（孔部１１ｃ）を備えている。 The pressurizing chamber B ′ includes a lower outer peripheral surface of the inner upper cylindrical portion 11b (stem side base), an inner bottom surface and a lower inner peripheral surface of the outer cylindrical portion 11d (stem side base portion), and a lower surface ( A space defined by the skirt portion 14b and the mortar circumferential surface portion 14a) and the like, and includes an inlet / outlet (hole portion 11c) for contents.

また、ステム側基部１１，天板状部材１２，ボタン側基部１３，ピストン１４および弁部材１５などはポリプロピレン，ポリエチレン，ポリアセタール，ナイロン，ポリブチレンテレフタレートなどからなるプラスチック製のものである。 Further, the stem side base 11, the top plate member 12, the button side base 13, the piston 14 and the valve member 15 are made of plastic made of polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate or the like.

図６の静止モードでは、
(41)ステム２，ステム側基部１１および天板状部材１２からなるステム側部材がマウンティングキャップ１（容器本体）に対する所定位置に保持され、
(42)操作側部材（押しボタン４およびボタン側基部１３）がバネ１６の作用で最上位置に、すなわちボタン側基部１３が弁部材１５を介して天板状部材１２に係止された状態の位置に保持され、
(43)ピストン１がバネ７の作用でリブ状部１４ｆを介してステム側基部１１に係止された状態に保持されている。 In the still mode of FIG.
(41) A stem-side member comprising the stem 2, the stem-side base 11 and the top plate-like member 12 is held at a predetermined position with respect to the mounting cap 1 (container body),
(42) The operation side member (the push button 4 and the button side base 13) is in the uppermost position by the action of the spring 16, that is, the button side base 13 is locked to the top plate member 12 via the valve member 15. Held in position,
(43) The piston 1 is held in a state of being locked to the stem-side base 11 through the rib-like portion 14 f by the action of the spring 7.

また、上述したように、静止モードにおける定量室Ａ’には前回の噴射操作にともなって内容物が流入済みである。 Further, as described above, the contents have already flowed into the fixed-quantity chamber A ′ in the stationary mode due to the previous injection operation.

このときボタン側基部１３の孔部１３ｂは弁部材１５で定量室Ａ’からいわばシールされているので、定量室Ａ’の内容物が孔部１３ｂ，通路域４ｂや噴射口８ｂなどを経て外部空間に漏れることはない。 At this time, since the hole 13b of the button side base 13 is sealed from the metering chamber A ′ by the valve member 15, the contents of the metering chamber A ′ are externally passed through the hole 13b, the passage area 4b, the injection port 8b, and the like. It does not leak into the space.

図６および図７の定量噴射機構の静止モードから定量噴射モードへの移行動作および定量噴射操作後の静止モードへの復帰動作は、図１〜図５のそれと同様である。 The transition operation from the stationary mode to the quantitative injection mode and the return operation to the stationary mode after the quantitative injection operation of the quantitative injection mechanism in FIGS. 6 and 7 are the same as those in FIGS.

すなわち、図６の静止モードの押しボタン４を押圧操作すると、
(51)先ず、押しボタン４およびボタン側基部１３がバネ１６の弱い弾性力に抗しながら下動してボタン側基部１３の弁作用部１３ｃがステム側基部１１の内側上筒状部１１ｂの上開口部分を閉じた状態、すなわち下流弁が閉じた状態となり（図２に相当）、
(52)その後、当該下流弁の閉状態により押しボタン４（およびボタン側基部１３）といわば一体化した形のステム側基部１１，ステム２および天板状部材１２がステム付勢用の周知のコイルスプリングの強い弾性力に抗しながら下動して、横孔部２ｂおよびステムガスケットからなる上流弁が開き（図３に相当）、
(53)その結果、容器本体の内容物が圧縮ガスの作用により加圧室Ｂ’へと流入してピストン１４をバネ７の弾性力に抗する形で押し上げ、定量室Ａ’に入っていた内容物を噴射孔８ｂから外部空間に噴射する（図３に相当）。 That is, when pressing the push button 4 in the stationary mode of FIG.
(51) First, the push button 4 and the button side base 13 are moved downward while resisting the weak elastic force of the spring 16, and the valve action portion 13c of the button side base 13 is moved to the inner upper cylindrical portion 11b of the stem side base 11. The upper opening is closed, that is, the downstream valve is closed (corresponding to FIG. 2),
(52) Thereafter, the stem-side base 11, the stem 2 and the top plate-like member 12, which are integrated with the push button 4 (and the button-side base 13) by the closed state of the downstream valve, are well-known for urging the stem. Lowering against the strong elastic force of the coil spring, the upstream valve consisting of the side hole 2b and the stem gasket opens (corresponding to FIG. 3),
(53) As a result, the contents of the container main body flowed into the pressurizing chamber B ′ by the action of the compressed gas, and the piston 14 was pushed up against the elastic force of the spring 7 and entered the determination chamber A ′. The contents are injected into the external space from the injection hole 8b (corresponding to FIG. 3).

そして、押しボタン４の押圧操作を解除すると、
(61)先ず、強い弾性力を持つステム付勢用のコイルスプリングの作用により、下流弁が閉じたままのステム側部材（ステム２，ステム側基部１１および天板状部材１２）と操作側部材（押しボタン４およびボタン側基部１３）からなる一体化物が図示上方向に復帰して上流弁は「閉」となり、一方、ピストン１２は加圧室Ｂ’の内容物の作用により略その最上位置に移動したままに保持され（図４に相当）、
(62)その後、バネ１６の作用で、ボタン側基部１３および押しボタン４の一体物がさらに上動して（ステム２およびステム側基部１１は上動せずに）下流弁が開くとともに、ピストン１４がバネ７の作用で下動し（図５に相当）、
(63)その結果、ピストン１４で押し出される形となる加圧室側の内容物が定量室Ａ’に流入するとともに、ボタン側基部１３の上動などにともなう当該定量室の容積増加によって生じるバックサクション作用で孔部１３ｂから先の（噴射口８ｂにいたる）下流側通路域の残留内容物が当該定量室にいわば逆流する。 And when the pressing operation of the push button 4 is released,
(61) First, the stem side member (stem 2, stem side base 11 and top plate member 12) and the operation side member with the downstream valve kept closed by the action of the coil spring for urging the stem having strong elastic force The integrated product (the push button 4 and the button side base 13) returns to the upper direction in the drawing, and the upstream valve is “closed”, while the piston 12 is substantially at its uppermost position by the action of the contents of the pressurizing chamber B ′. Is kept moving (corresponding to FIG. 4),
(62) Thereafter, the action of the spring 16 causes the integrated body of the button side base 13 and the push button 4 to further move up (the stem 2 and the stem side base 11 do not move up), and the downstream valve opens, and the piston 14 is moved downward by the action of the spring 7 (corresponding to FIG. 5),
(63) As a result, the contents on the pressurizing chamber side pushed out by the piston 14 flow into the metering chamber A ′, and the back generated by the increase in the volume of the metering chamber due to the upward movement of the button side base 13 or the like. Due to the suction action, the residual content in the downstream passage area (from the hole 13b) to the downstream side of the hole 13b flows back into the metering chamber.

図６および図７の定量噴射機構が図１〜図５のそれと基本的に相違している点はアフタードロー防止用の弁部材１５を設けたことである。 6 and 7 is basically different from that of FIGS. 1 to 5 in that a valve member 15 for preventing after-drawing is provided.

弁部材１５は、図７に示すようにピストン１４が加圧室Ｂ’の内容物圧力により上方向に移動しきった定量噴射モードの最終段階において、その擂鉢周面部分１５ｂが当該ピストンのシール作用筒状部１４ｅの上端内縁部分と密接する。なお、最終段階とは必ずしもピストン１４がその最上位置まで移動したときに限定されるものではない。最上位置近くまで移動したときをこの最終段階としてもよい。 As shown in FIG. 7, in the final stage of the quantitative injection mode in which the piston 14 has completely moved upward due to the pressure of the contents in the pressurizing chamber B ′, the mortar peripheral surface portion 15b of the valve member 15 is sealed by the piston. Close contact with the inner edge portion of the upper end of the cylindrical portion 14e. The final stage is not necessarily limited to when the piston 14 has moved to its uppermost position. The final stage may be the time when it has moved to near the top position.

この密接作用により、天板状部材１２および弁部材１５とピストン１４との間の定量室空間域がボタン側基部１３の連通用の孔部１３ｂからいわば遮断されて、すなわち定量室Ａ’と、当該連通用孔部およびその下流側の噴射口８ｂにいたる内容物通路域との連続性が断たれて、当該定量室区間域はシールされることになる。 By this close action, the fixed chamber space area between the top plate member 12 and the valve member 15 and the piston 14 is blocked from the communicating hole 13b of the button side base 13, that is, the fixed chamber A '. The continuity between the communication hole and the content passage area leading to the downstream side injection port 8b is cut off, and the metering chamber section area is sealed.

このシール作用の結果、当該ピストンがステム側基部１１からの上方向の内容物圧力を受けて変形しようとしても、すなわち当該定量室区間域の容積が減少する方向に変形しようとしても、その影響が（シール作用筒状部１４ｅと擂鉢周面部分１５ｂとの間の）上記密接部分から噴射孔部８ｂまでの下流側通路域に入っている内容物に影響を及ぼすことはない。 As a result of this sealing action, even if the piston is deformed in response to the upward pressure of the contents from the stem-side base 11, that is, even if the piston is deformed in a direction in which the volume of the metering chamber section area is reduced, the effect is exerted. It does not affect the contents in the downstream passage area from the close contact portion (between the sealing action cylindrical portion 14e and the mortar peripheral surface portion 15b) to the injection hole portion 8b.

そのため、ピストン１４の（図７の）最上位置までの移動にともなう内容物の連続噴射の後で、上記下流側通路域の内容物が噴射孔部８ｂから垂れるといったアフタードローを防止することができる。 Therefore, after the continuous injection of the contents accompanying the movement of the piston 14 to the uppermost position (in FIG. 7), it is possible to prevent an after draw such that the contents in the downstream passage region hang down from the injection hole portion 8b. .

本発明は、以上述べた押しボタンタイプの操作部に限定されるのではなく、チルトタイプやレバータイプなどの各種操作部にも適用可能である。 The present invention is not limited to the push button type operation unit described above, but can be applied to various operation units such as a tilt type and a lever type.

なお、図６および図７の定量噴射機構で用いるコイル状のバネ７の弾性力と上述のステム付勢力との大小関係は任意である。 The magnitude relationship between the elastic force of the coiled spring 7 used in the quantitative injection mechanism shown in FIGS. 6 and 7 and the above-described stem biasing force is arbitrary.

また、アフタードロー防止用のシール作用部は、図示のピストン１４（シール作用筒状部４ｅ）および弁部材１５の態様に限定されるものではない。 Further, the sealing action portion for preventing after-draw is not limited to the illustrated piston 14 (sealing action tubular portion 4e) and the valve member 15.

例えば、天板状部材１２やピストン１４などにアフタードロー防止用のシール作用部を、ピストン１４がその最上位置まで移動したときには（当該シール作用部以外の）他の部材（ピストン１４，天板状部材１２やボタン側基部１３など）に密接して、それまでの定量室Ａ’と、連通用孔部１３ｂおよびその下流側の噴射口８ｂにいたる内容物通路域との連続性が遮断される態様で、設けてもよい。 For example, when the piston 14 moves to the uppermost position of a sealing action portion for preventing after-drawing on the top plate-like member 12 or the piston 14 (other than the sealing action portion), other members (piston 14, top plate-like shape) In close contact with the member 12 and the button-side base 13), the continuity between the constant-quantity chamber A 'and the content passage area leading to the communication hole 13b and the downstream injection port 8b is blocked. In an embodiment, it may be provided.

本発明が適用されるエアゾール式製品としては、消臭剤，洗浄剤，清掃剤，制汗剤，冷却剤，筋肉消炎剤，ヘアスタイリング剤，ヘアトリートメント剤，染毛剤，育毛剤，化粧品，シェービングフォーム，食品，液滴状のもの（ビタミンなど），医薬品，医薬部外品，塗料，園芸用剤，忌避剤（殺虫剤），クリーナー，洗濯のり，ウレタンフォーム，消火器，接着剤，潤滑剤などの各種用途のものがある。 Aerosol products to which the present invention is applied include deodorants, cleaning agents, cleaning agents, antiperspirants, cooling agents, muscle anti-inflammatory agents, hair styling agents, hair treatment agents, hair dyes, hair restorers, cosmetics, Shaving foam, food, droplets (such as vitamins), pharmaceuticals, quasi-drugs, paints, horticultural agents, repellents (insecticides), cleaners, laundry pastes, urethane foams, fire extinguishers, adhesives, lubrication There are various uses such as agents.

容器本体に収納する内容物は、例えば、粉状物，油成分，アルコール類，界面活性剤，高分子化合物，各用途に応じた有効成分などである。 The contents stored in the container main body are, for example, a powdery substance, an oil component, an alcohol, a surfactant, a polymer compound, and an active ingredient corresponding to each application.

粉状物としては、金属塩類粉末，無機物粉末や樹脂粉末などを用いる。例えば、タルク，カオリン，アルミニウムヒドロキシクロライド（アルミ塩），アルギン酸カルシウム，金粉，銀粉，雲母，炭酸塩，硫酸バリウム，セルロース，これらの混合物などを用いる。 As the powder, metal salt powder, inorganic powder, resin powder, or the like is used. For example, talc, kaolin, aluminum hydroxychloride (aluminum salt), calcium alginate, gold powder, silver powder, mica, carbonate, barium sulfate, cellulose, and a mixture thereof are used.

油成分としては、シリコーン油，パーム油，ユーカリ油，ツバキ油，オリーブ油，ホホバ油，パラフィン油，ミリスチン酸，パルミチン酸，ステアリン酸，リノール酸，リノレン酸などを用いる。 As the oil component, silicone oil, palm oil, eucalyptus oil, camellia oil, olive oil, jojoba oil, paraffin oil, myristic acid, palmitic acid, stearic acid, linoleic acid, linolenic acid and the like are used.

アルコール類としては、エタノールなどの１価の低級アルコール，ラウリルアルコールなどの１価の高級アルコール，エチレングリコールなどの多価アルコールなどを用いる。 As alcohols, monovalent lower alcohols such as ethanol, monovalent higher alcohols such as lauryl alcohol, polyhydric alcohols such as ethylene glycol, and the like are used.

界面活性剤としては、ラウリル硫酸ナトリウムなどのアニオン性界面活性剤、ポリオキシエチレンオレイルエーテルなどの非イオン性界面活性剤、ラウリルジメチルアミノ酢酸ベタインなどの両性界面活性剤、塩化アルキルトリメチルアンモニウムなどのカチオン性界面活性剤などを用いる。 Surfactants include anionic surfactants such as sodium lauryl sulfate, nonionic surfactants such as polyoxyethylene oleyl ether, amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, and cations such as alkyltrimethylammonium chloride. A surfactant is used.

高分子化合物としては、メチルセルロース，ゼラチン，デンプン，カゼインなどを用いる。 As the polymer compound, methyl cellulose, gelatin, starch, casein and the like are used.

各用途に応じた有効成分としては、サリチル酸メチル，インドメタシンなどの消炎鎮痛剤、安息香酸ナトリウム，クレゾールなどの除菌剤、ヒレスロイド，ジエチルトルアミドなどの害虫忌避剤、酸化亜鉛などの制汗剤、カンフル，メントールなどの清涼剤、エフェドリン，アドレナリンなどの抗喘息薬、スクラロース，アスパルテームなどの甘味料、エポキシ樹脂，ウレタンなどの接着剤や塗料、パラフェニレンジアミン，アミノフェノールなどの染料，リン酸二水素アンモニウム，炭酸水素ナトリウム・カリウムなどの消火剤などを用いる。 Active ingredients according to each application include anti-inflammatory analgesics such as methyl salicylate and indomethacin, disinfectants such as sodium benzoate and cresol, insect repellents such as Hillesroid and diethyltoluamide, antiperspirants such as zinc oxide, Softeners such as camphor and menthol, anti-asthma drugs such as ephedrine and adrenaline, sweeteners such as sucralose and aspartame, adhesives and paints such as epoxy resin and urethane, dyes such as paraphenylenediamine and aminophenol, dihydrogen phosphate Use a fire extinguishing agent such as ammonium or sodium bicarbonate.

さらに、上記内容物以外の、懸濁剤，紫外線吸収剤，乳化剤，保湿剤，酸化防止剤、金属イオン封鎖剤なども用いることができる。 Further, other than the above-mentioned contents, suspending agents, ultraviolet absorbers, emulsifiers, humectants, antioxidants, sequestering agents, etc. can be used.

エアゾール式製品における内容物噴射用ガスとしては、炭酸ガス，窒素ガス，圧縮空気，酸素ガス，希ガス，これらの混合ガスなどの圧縮ガスを用いる。 As the gas for injecting the contents in the aerosol type product, a compressed gas such as carbon dioxide, nitrogen gas, compressed air, oxygen gas, rare gas, or a mixed gas thereof is used.

本発明の定量噴射機構（その１）の静止モード（押しボタンが押圧操作されていなくて、ステム側の上流弁は閉じ、押しボタン側の下流弁は開いた状態）を示す説明図である。It is explanatory drawing which shows the stationary mode (The state where the push button is not pressed and the upstream valve on the stem side is closed, and the downstream valve on the push button side is opened) of the quantitative injection mechanism (part 1) of the present invention. 図１の押しボタンが押圧操作されて静止モードから定量噴射モードへ移行するときの初期段階（押しボタンのみが少し下動してステム側と一体化した状態）を示す説明図である。It is explanatory drawing which shows the initial stage (state which only the push button moved down a little and was integrated with the stem side) when the push button of FIG. 1 is pressed and transfers to a fixed injection mode from a stationary mode. 図２に続く定量噴射モード（押しボタンおよびステムはそれぞれ下死点まで移動して上流弁が開き、容器内部の圧縮ガスの作用で容器内容物が加圧室に流入して定量室用ピストンを上動させることにより、前回の静止モード復帰時に定量室に流入済みの内容物（図５参照）が噴射口の方に移動する状態）を示す説明図である。2 is a quantitative injection mode (the push button and the stem move to the bottom dead center respectively, the upstream valve opens, and the contents of the container flow into the pressurizing chamber by the action of the compressed gas inside the container and the piston for the quantitative chamber is It is explanatory drawing which shows the state which the content (refer FIG. 5) already flowed into the fixed_quantity | quantitative_assay chamber at the time of the last return to stationary mode by moving up moves to the injection port. 図３の内容物定量噴射終了後に押しボタンの押圧操作が解除されて図３の定量噴射モードから図２の段階まで復帰した状態（押しボタン側およびステム側が一体のままステムの上死点まで復帰して、上流弁は閉じた状態）を示す説明図である。3. After the content quantitative injection of FIG. 3 is completed, the push button is released and the state is returned to the stage of FIG. 2 from the quantitative injection mode of FIG. 3 (the push button side and the stem side remain integrated to return to the top dead center of the stem. Then, the upstream valve is closed). 図４の押しボタンがその上死点までさらに上動し、かつ、定量室用ピストンがバネの作用で下動して図１の静止モード直前の位置まで復帰した状態（加圧室の内容物や噴射口への通路部分の残留内容物が定量室に流入している状態）を示す説明図である。The push button in FIG. 4 is further moved up to its top dead center, and the piston for the metering chamber is lowered by the action of the spring and returned to the position just before the stationary mode in FIG. FIG. 6 is an explanatory diagram showing a state in which residual contents in the passage portion to the injection port flow into the metering chamber. 本発明の定量噴射機構（その２：アフタードロー防止用の弁部材１５を設けたタイプ）の静止モード（押しボタンが押圧操作されていなくて、ステム側の上流弁は閉じ、押しボタン側の下流弁は開いた状態）を示す説明図である。The fixed injection mechanism of the present invention (part 2: a type provided with a valve member 15 for preventing after-draw) (the push button is not operated, the stem-side upstream valve is closed, and the push-button side downstream) It is explanatory drawing which shows a valve in the open state. 図６の場合の定量噴射モードの最終段階（押しボタンの押圧操作は継続されて上流弁が開いたままで、かつ、定量室用ピストンがその最上位置に移動してアフタードロー防止用の弁部材１５と密接することにより定量室とその下流側の内容物通路域とがいわば遮断されたシール状態）を示す説明図である。The final stage of the quantitative injection mode in the case of FIG. 6 (the pressing operation of the push button is continued and the upstream valve remains open, and the fixed-quantity chamber piston moves to its uppermost position and the after-draw prevention valve member 15 It is explanatory drawing which shows the sealing | blocking state in which the fixed_quantity | quantitative_assay chamber and the content passage area | region of the downstream of it were interrupted | blocked by contacting closely.

Explanation of symbols

Ａ：定量室
Ｂ：加圧室，
Ｃ：定量室から外部空間への内容物放出状況（図３参照）
Ｄ：容器本体から加圧室への内容物流入状況（図３参照）
Ｅ：静止モード復帰時の定量室への内容物流入状況（図５参照）
１：マウンティングキャップ
２：ステム
２ａ：内容物の通路域
２ｂ：上流弁を構成する横孔部
３：ステム側基部
３ａ：内側下筒状部
３ｂ：内側上筒状部
３ｃ：内容物通過用の孔部
３ｄ：環状の連結部分
３ｅ：逆スカート部
３ｆ：ボタン側基部５（脚部５ｆ）を案内・保持する孔部
３ｇ：ボタン側基部５が抜けるのを防止するための上段部分
３ｈ：外側筒状部
３ｊ：起立受け部
４：押しボタン
４ａ：垂下部
４ｂ：内容物の通路域
５：ボタン側基部
５ａ：小径筒状部
５ｂ：大径鞘状部
５ｃ：径方向の内側溝状部
５ｄ：下流弁を構成する弁作用部
５ｅ：凸状部
５ｆ：脚部
５ｇ：下段部分
５ｈ：天井面部分
６：環状のピストン（定量室用ピストン）
６ａ：擂鉢周面状部
６ｂ：スカート部
７：コイル状のバネ
８：噴射用ピース
８ａ：内容物の通路域
８ｂ：噴射口 A: Determination chamber B: Pressurization chamber,
C: Contents released from the quantitative chamber to the external space (see Fig. 3)
D: Content inflow from container body to pressurization chamber (see Fig. 3)
E: Contents inflow into the fixed-quantity chamber when returning to the stationary mode (see Fig. 5)
1: Mounting cap 2: Stem 2a: Content passage area 2b: Horizontal hole portion constituting upstream valve 3: Stem side base portion 3a: Inner lower cylindrical portion 3b: Inner upper cylindrical portion 3c: For passage of contents Hole portion 3d: annular connecting portion 3e: reverse skirt portion 3f: hole portion 3g for guiding / holding the button side base portion 5 (leg portion 5f): upper step portion 3h for preventing the button side base portion 5 from coming off: outside Tubular portion 3j: Standing receiving portion 4: Push button 4a: Hanging portion 4b: Content passage area 5: Button side base portion 5a: Small diameter tubular portion 5b: Large diameter sheath portion 5c: Radial inner groove portion 5d: Valve action part 5e constituting the downstream valve: convex part 5f: leg part 5g: lower part 5h: ceiling surface part 6: annular piston (piston for metering chamber)
6a: bowl surface portion 6b: skirt portion 7: coiled spring 8: injection piece 8a: contents passage area 8b: injection port

（以下は図６および図７のみで使用）
Ａ’：定量室
Ｂ’：加圧室
Ｄ’：容器本体から加圧室への内容物流入状況
１１：ステム側基部
１１ａ：内側下筒状部
１１ｂ：内側上筒状部
１１ｃ：内容物通過用の孔部
１１ｄ：外側筒状部
１２：筒状の天板状部材
１２ａ：外側凸状部
１２ｂ：内側凸状部
１２ｃ：天板中央筒状部
１２ｄ：環状の段部
１２ｅ：環状の溝状部
１３：鞘状のボタン側基部，
１３ａ：上側筒状部
１３ｂ：内容物通過用の孔部
１３ｃ：テーパ状外周面を持った弁作用部
１３ｄ：環状の下方段部
１３ｅ：環状のテーパ面
１３ｆ：環状の上方下側段部
１３ｇ：環状の上方上側段部
１４：環状のピストン（定量室用ピストン）
１４ａ：擂鉢周面状部
１４ｂ：スカート部
１４ｃ：逆スカート部
１４ｄ：環状の段部
１４ｅ：シール作用筒状部
１４ｆ：リブ状部
１５：アフタードロー防止用の弁部材
１５ａ：スカート部
１５ｂ：擂鉢周面状部
１５ｃ：逆擂鉢周面状部
１５ｄ：外側上端部
１６：コイル状のバネ (The following is used only in FIGS. 6 and 7.)
A ′: Determination chamber B ′: Pressurization chamber D ′: Content inflow state from the container body to the pressurization chamber 11: Stem side base portion 11a: Inner lower tubular portion 11b: Inner upper tubular portion 11c: Content passage Hole portion 11d: outer cylindrical portion 12: cylindrical top plate member 12a: outer convex portion 12b: inner convex portion 12c: top central cylindrical portion 12d: annular step 12e: annular groove -Shaped part 13: sheath-like button side base,
13a: Upper cylindrical portion 13b: Hole portion 13c for passage of contents: Valve action portion 13d having a tapered outer peripheral surface: An annular lower step portion 13e: An annular tapered surface 13f: An annular upper lower step portion 13g : Annular upper upper step 14: annular piston (quantitative chamber piston)
14a: mortar peripheral surface portion 14b: skirt portion 14c: reverse skirt portion 14d: annular step portion 14e: sealing action cylindrical portion 14f: rib-shaped portion 15: valve member 15a for preventing after-drawing: skirt portion 15b: mortar Peripheral surface portion 15c: Inverted bowl peripheral surface portion 15d: Outer upper end portion 16: Coiled spring

Claims

In a quantitative injection mechanism in which a quantitative chamber for injecting contents is formed between a stem side member of an aerosol container of a type that uses compressed gas and an operation side member that moves relative to the stem side member,
The metering chamber is defined by a piston that moves based on the pressure received from the compressed gas inside the container and the biasing force of the elastic body in the direction opposite to the pressure,
The stem side member includes at least a stem main body portion and an upstream side cylinder that forms a content passage area to the operation side member on the downstream side of the stem main body portion and an outer peripheral surface exhibits a sealing action on the piston. An annular part that forms a pressurizing chamber between the piston and the piston on the downstream side of the stem body part, and an inflow port for contents to the pressurizing chamber,
The operation side member includes at least an operation main body part, a valve action part for the output part of the upstream side cylinder part, a downstream side cylindrical part that forms a content passage region downstream of the valve action part, and A communication section from the quantitative chamber to the content passage area,
When the operation main body is operated from the stationary mode to the quantitative injection mode,
First, the valve action portion shifts the output portion of the upstream cylindrical portion from the open state up to then to the closed state, and subsequently drives the stem side member to open the valve portion of the stem body portion,
As a result, the contents of the container main body flow into the pressurizing chamber from the inlet, and the piston is moved by the action of the compressed gas to reduce the volume of the quantitative chamber, so that the already stored contents therein An object is injected into the external space through the communication part and the downstream cylindrical part.
A quantitative injection mechanism characterized by that.

A stem side base portion comprising at least the upstream cylindrical portion, the annular portion, and the inflow port is provided in a mode of fitting with the stem main body portion;
An operation side base portion including at least the valve action portion, the communication portion, and the downstream side cylindrical portion is provided in a mode of fitting with the operation main body portion.
The fixed-quantity injection mechanism according to claim 1 characterized by things.

A sealing action portion having a function of blocking the continuity between the fixed quantity chamber and the communication part when the piston moves to the end position of the fixed quantity injection mode by the action of the compressed gas is provided,
The fixed-quantity injection mechanism according to claim 1 or 2 characterized by things.

The stem side member is
It is integrated with the annular portion so as to surround the downstream cylindrical portion, receives the elastic body, and includes a top plate-like portion that forms the metering chamber with the piston,
The sealing action part is
A valve member provided in a space region between the downstream cylindrical portion and the top plate-like portion in a mode that also acts as a member for forming the metering chamber, and a part of the piston hits the valve member. It is made up of touching parts,
The fixed-quantity injection mechanism according to claim 3 characterized by things.

The fixed-quantity injection mechanism according to any one of claims 1 to 4 is provided, and the compressed gas for injection and contents are accommodated.
Aerosol type product characterized by that.