JP3931364B2

JP3931364B2 - Valve type applicator

Info

Publication number: JP3931364B2
Application number: JP35732996A
Authority: JP
Inventors: 直樹加藤
Original assignee: Pentel Co Ltd
Current assignee: Pentel Co Ltd
Priority date: 1996-12-26
Filing date: 1996-12-26
Publication date: 2007-06-13
Anticipated expiration: 2016-12-26
Also published as: JPH10181280A

Description

【０００１】
【発明の属する技術分野】
本発明は、墨液、絵の具、インキなどの筆記液、アイライナー、リップカラーなどの化粧液といった塗布液の塗布具に関するものである。更に詳細には、ペン先などの塗布体と、直接塗布液を収容する塗布液収容部との間に弁機構を配置し、弁機構を開放し塗布体に塗布液を供給する塗布具に関する。
【０００２】
【従来の技術】
従来、軸筒内に、塗布液収容室を設け、この塗布液収容室の前壁に弁機構を備えた塗布液吐出口を設け、この塗布液吐出口の前部に塗布体を挿入した塗布具が数多く知られている。例えば、実開昭６１−２０３７９号公報には、インクを収容する中空状の本体と、この本体の一端部に取着され繊維ペン及びこの繊維ペンに供給するインクを貯留するインク貯留体を抱持したペンホルダーと、上記本体の一端部との間に液密に介在され案内通孔及びこの案内通行孔の外側開口縁に弁座を有する弁本体と、この弁本体の案内通孔内に進退自在に挿通され、その先端部に弁座に対して接離する弁を有するとともに、後端部を上記本体の他端部の摺動部に摺動自在に係合した弁杆と、この弁杆上記弁本体との間に介在され弁杆の弁を常時弁座に圧接するよう弁杆を付勢するスプリングと、上記弁杆の後端部に可塑性シートを介して進退自在に設けられた可塑性シート及び上記スプリングに抗して上記弁杆を押動する押釦とを具備したことを特徴とする塗布具を要旨とする考案が開示されている。
【０００３】
上記塗布具は、押釦の押圧によって、可塑性シートを介して弁杆を摺動移動し、この弁杆が弁本体を押圧する事で、前記弁座に圧接した弁本体を移動し、インクが貯留部に供給され、さらに繊維ペンにインクが供給され塗布可能となるものである。この様な塗布具の場合、予め貯蔵部（塗布液吸蔵体）や繊維ペン（塗布体）にインク（塗布液）が供給されていない状態で市場に供給されることが多い。これは、上記のような塗布具は、温度が高い時に使用するとか、気圧の低いところで使用する等といった特別な使用環境においては、塗布液収容室内部の圧力が塗布具外部の気圧より高くなり、弁開放時に塗布液が過剰に供給され、塗布液吸蔵体や塗布体から塗布液が溢れ出す、所謂ボタ落ち現象が発生することが多く、これを防止するためである。即ち、予め塗布液吸蔵体や塗布体に塗布液が供給されていない場合、弁開放時に塗布液が多めに供給されても、塗布液吸蔵体や塗布体に塗布液が吸収されボタ落ちする危険性が少なくなるということである。また、予め塗布液吸蔵体や塗布体に塗布液が供給されていない場合、使用者が未使用品か既使用品か容易に判別出来ると言う利点もある。
【０００４】
【発明が解決しようとする課題】
上記の様に、予め塗布液吸蔵体及び塗布体に塗布液が供給されていない場合、前記の様な理由によりボタ落ちする危険性は少なくなる。しかし、一般に使用される温度や気圧の条件下での使用環境では、塗布液収容部内部の圧力と外部の気圧との差が少ない。このような場合、弁開放時の塗布液の供給量は、上記のような使用条件の場合に比較して少なくなる。しかも、塗布液吸蔵体や塗布体に塗布液を供給する分、塗布出来るまでの時間がかかると言う欠点がある。上記塗布出来るまでの時間を省くという為には、予め塗布液を塗布液吸蔵体及び塗布体に供給したものを市場に供給することが考えられる。しかし、この場合、前記の様に温度が高かったり、気圧が低いときに使用した場合、塗布液収容室内部と外部との圧力差によってボタ落ちが発生しやすい。そして、この現象は、特に、揮発性溶剤を用いた塗布液を使用した場合、顕著である。
【０００５】
本発明は、塗布液吸蔵体及び塗布体に塗布液が供給されていない場合、最初の弁開放時の塗布液の供給量を多くする様にし、塗布液吸蔵体や塗布体へ早く浸透させ、すぐ塗布が出来る弁式塗布具を提供すること、及び、塗布液吸蔵体及び塗布体に塗布液が供給されている場合、外部の温度が通常使用する温度より高かったり、気圧が低かったりするという使用条件下で、最初の弁開放時の塗布液の供給量を少なくする様にし、ボタ落ちを防止できる弁式塗布具を提供する課題とするものである。
【０００６】
【課題を解決するための手段】
本発明は、塗布部と塗布液収容室とを弁機構を介して連接すると共に、前記塗布部と弁機構との間に塗布液吸蔵体を配置し、最初の使用時に始めて開弁して、塗布液を塗布部へ供給するようなした弁式塗布具において、使用前の前記液収容室の内圧を、最初の使用時に始めて開弁する前に予め塗布液吸蔵体及び塗布体に塗布液が供給されていない場合には塗布液収容室の内圧を常圧の条件下で組み立てられた場合の内圧に対して強制的に高くなし、最初の使用時に始めて開弁する前に予め塗布液吸蔵体及び塗布体に塗布液が供給されている場合には塗布液収容室の内圧を常圧の条件下で組み立てられた場合の内圧に対して強制的に低くなしたことを特徴とする弁式塗布具を要旨とする。
【０００７】
【作用】
本発明に係る塗布具は、塗布液収容室の内部の圧力を、使用時の外部の温度や気圧が異なった場合でも塗布液吸蔵体や塗布体の容量に合わせ、塗布液が吐出できる様に予め調整を行ったものであるので、使用者が初めて使用するために弁機構を開放したときに、外部の温度や気圧の影響を受け難く、適正な塗布液が供給される為、塗布液がなかなか浸透しなかったり、過剰供給によるボタ落ちを防止できる。
【０００８】
【実施例】
以下、本考案を添付図面を参照して詳細に説明する。図１は、本発明の一実施例を示す塗布具の縦断面図である。参照符号１は、アクリル繊維、ポリエステル繊維、ナイロン繊維、レーヨン系繊維などの繊維結束体や、ウレタン系樹脂、ポリエステル系樹脂、ナイロン系樹脂、セラミックなどの成形体などよりなる塗布体である。塗布体１は前方（図中上方向）が小径で後方が大径である前軸２の先端貫通孔３の小径の部分に挿入されている。
【０００９】
前記前軸２の先端貫通孔３内壁には、複数のリブ４が軸長手方向に形成されており、この複数のリブ４が空気流通孔となっている。
【００１０】
塗布体１の後方には、アクリル繊維、ポリエステル繊維、ナイロン繊維、レーヨン系繊維などの繊維束体である中綿や、ウレタン系樹脂などの軟質樹脂の連通気孔多孔質体などよりなる塗布液吸蔵体５が配置され、塗布体１の後部は塗布液吸蔵体５の前部に挿入されている。前記前軸２は、後軸８の前端開口部に挿入固定されている。
【００１１】
塗布液吸蔵体５の後方には、前方への突出筒部６を有する蓋体７が配置されている。前記突出筒部６は、その前部が前記塗布液吸蔵体５の後部に挿入されており、前記蓋体７は、前軸２の後端及び後軸８の内壁に圧入嵌合され、後軸８内部に形成された塗布液収容部９の蓋体となっている。
【００１２】
塗布液収容部９は、その内部の圧力を、室温、常圧の条件下で組み立てられた場合の塗布液収容室内圧に比較して、加圧または減圧となすことが必要である。これは、後述する弁機構を初めて開放したとき、塗布液が適正量、塗布液吸蔵体５や塗布体１に供給されるようにするためである。塗布液収容部９の内部の圧力を高くする方法としては、後軸８の内径を蓋体７の外径よりも小さめにし、蓋体７を挿入した際、強制的に空気を圧縮し内圧を高める方法や、塗布液を常温より低い温度で充填し、塗布液収容室９が常温の使用環境下に放置された時、塗布液収容室９の内部の塗布液温度が上がり内圧が高くなる様にする方法や、塗布具を製品化した後、弁機構を開放状態にし、塗布液収容室内に直接空気を送り込み加圧状態にする方法などを採用することができる。また、塗布液収容部９の内部の圧力を低くする方法としては、塗布液を常温より高い温度で充填し、塗布液収容室９が常温より低い温度の使用環境下に放置された時、塗布液収容室９の内部の塗布液が冷え内圧が低くなる様にする方法や、塗布具を製品化した後、弁機構を開放状態にし、塗布液収容室内から直接空気を吸引し減圧状態にする方法などを採用することができる。
【００１３】
前記突出部６の内壁下部には座部６ａが形成されている。この座部６ａは、前記突出筒部６の内部に摺動自在に配置され、コイルバネなどの弾撥部材１０によって後方に付勢される弁体１１に設けられた弁部１１ａと当接し、弁機構を構成している。また、この弁体１１は、蓋体７の材質より曲げ弾性率が低く、引っ張り破断点応力（ＪＩＳＫ７１１３測定法）が２００Ｋｇ／ｃｍ２以上あり、ポリプロピレンやポリプロピレンとポリエチレンのブレンド品で射出成形されたものが好ましい。更に、弁１１の密閉性を向上するため、弁部１１ａに潤滑剤を塗布したり、予め弁１１に脂肪酸系のスリップ剤を成形前に混ぜ合わせてもよい。
【００１４】
この弁機構は、前記塗布液収容部９の塗布液吐出口であり、連続する突出筒部６の開口端が実質的な塗布液吐出口となっている。
【００１５】
弁体１１は、その後方部１１ｂが蓋体７を貫通して塗布液収容部９内へ延設されており、後方部１１ｂの後部は塗布液収容部９内に配置された筒状の弁開放体１２の前端に挿入固定されている。
【００１６】
この弁開放体１２は、その後部が塗布液収容部９の底部である可動部１３の有底筒状部１３ａ内部に挿入されている。弁開放体１２の後端１２ｂと、前記有底筒状部１３ａの底面とは、僅かな間隔を有している。これは、弁機構開放のため有底筒状部１３ａを前方へ押圧するときの遊びである。尚、可動部１３はノック動作を弁開放体１２に伝達する部分であり、前記有底筒状部１３ａと薄肉部１３ｂとよりなり塗布液収容部９内壁に後軸８と一体に形成されている。尚、この後軸８一体で成形されている可動部１３は、可動に必要な荷重をなるべく低くするため、曲げ弾性率（ＪＩＳ７２０３に規定する測定法）で１０，０００Ｋｇ／ｃｍ^２以下のポリプロピレン製か、ポリプロピレンとポリエチレンのブレンド品で射出成形されたものが好ましい。
【００１７】
弁開放体１２に設けた振れ防止ガイド１４は、弁開放体１２の後方に設けた４つの突起である。この４つの突起は十字方向に設けており、塗布液収容部９の内壁に対し弁開放体１２が振れて偏心しないよう、その先端と塗布液収容部内壁との間が僅かな間隙となるよう形成している。また、組立性の向上をはかる為、弁開放体１２の後方から横振れ防止ガイド１４にかけ末広がりテーパーを付けている。この十字方向に設けた突起は、どれか１つもしくは２つが、他の突起と形成位置が前後にずれている方が成形加工上好ましい。尚、弁開放体１２は、弁開放時に弁開放体１２がタワミ難いように、曲げ弾性率が９，０００Ｋｇ／ｃｍ^２以上であり、弾撥部材１０の弾撥力によって応力破断しない様に、引っ張り応力破断点が２００Ｋｇ／ｃｍ^２以上のポリプロピレン、ポリアセタール、ポリアミド、ポリエチレン等の樹脂で成形されている事が好ましい。
【００１８】
前記弁開放体１２の後部１２ａは、有底筒状部１３ａの開口径より細くすることによって、組立時、弁開放体１２を塗布液収容部９に挿入した際に、前記振れ防止ガイド１４と、塗布液収容部９内壁との間の僅かな間隙に起因する若干の振れが発生しても、後部１２ａが有底筒状部１３ａに確実に挿入が可能となり製品組立が容易にできる。更に、弁開放体１２の後端１２ｂは、Ｒ形状か、先が尖った形状であると有底筒状部１３ａに挿入し易く、製品組立上好ましい。尚、弁開放体１２の突起部１２ｃは、弾撥部材１０の係止部である。
【００１９】
尾栓１５は、外壁にキャップ嵌合可能な全周リブを設けた大筒部１５ａと、内壁に螺旋溝を形成した小筒部１５ｂからなる有底筒体である。この尾栓１５は、後軸８の後端の有底筒体１３ａの外壁に軸長手方向に設けた複数のリブの後端から、リブ外径より小径に形成した尾栓１５の小筒部１５ｂ内壁部の螺旋溝の先端開口部が圧入嵌合されている。また尾栓１５は、後軸８の材質より、曲げ弾性率が低い材質樹脂か金属などで形成されているか、又は、小筒部１５ｂがたわみ難いような肉厚に形成しておくと、後軸８のリブに経時的に尾栓１５の螺旋溝が食い込み、有低筒状部１３ａと尾栓１５とが脱離しにくく好ましい。
【００２０】
次に使用方法について説明する。尾栓１５に押圧力を付与すると、可動部１３の薄肉部１３ｂが変形すると共に有底筒状部１３ａが前進し、有底筒状部１３ａの底面が、弾撥体１０の付勢力に抗して、弁開放体１２及び弁体１１を前進させ、弁部１１ａと座部６ａとを離間し弁機構を開放する。この時、弁開放体１２は振れ防止ガイド１４によって振れが防止されながら塗布液収容部９内を移動する。
【００２１】
弁機構が開放されると、塗布液収容部９内の塗布液は、突出筒部６内を通り、塗布液吸蔵体５内に吐出され、更に、塗布液吸蔵体５を経て塗布体１に供給され塗布が可能となる。
【００２２】
この時、塗布液収容部９の内圧を変化させたときの塗布液の初期の吐出量と塗布液吐出時間及びボタ落ちの有無を表１〜６に示す。試験を行うに当たって、塗布具としては、市販の後端ノック型弁式塗布具（ノックル、ぺんてる（株）製）を用いた。
【００２３】
【表１】

表１より、塗布液収容室内圧を常圧より５０ｍｍＨｇ以上高くすることにより、使用環境が、室温（２０℃）より著しく高い場合でも、低い場合でも、塗布液が、短時間で塗布体に浸透することがわかる。
【００２４】
【表２】

表２より、塗布液収容室内圧を、常圧より８０ｍｍＨｇ以上高くした場合、使用環境が常温より著しく高い場合、ボタ落ちする可能性があることが判る。
【００２５】
表１及び表２より、塗布液吸蔵体・塗布体に塗布液を供給していない場合、塗布液収容室の内圧は、常圧より５０ｍｍＨｇ程度高く設定する事で塗布液の浸透が良く外部温度が高めでもボタ落ちし難いことが判る。
【００２６】
【表３】

表３より、塗布液収容室内圧を常圧より５０ｍｍＨｇ以上高くすることにより、使用環境が、室圧（１．０ａｔｍ）より著しく高い場合でも、低い場合でも、塗布液が、短時間で塗布体に浸透することがわかる。
【００２７】
【表４】

表４より、塗布液収容室内圧を常圧より、８０ｍｍＨｇ以上高くした場合、使用環境が、常圧より著しく低い場合ボタ落ちする可能性がある。
【００２８】表３及び表４より、塗布液吸蔵体・塗布体に塗布液を供給していない場合、塗布液収容室の内圧は、常圧より５０ｍｍＨｇ程度高く設定する事で塗布液の浸透が良く外部気圧が高めでもボタ落ちし難いことが判る。
【００２９】以上、表１〜４の結果を総合すると、塗布液吸蔵体・塗布体に塗布液が供給されていない場合、塗布液収容室の内圧は、常圧より５０ｍｍＨｇ程度高く設定することが望ましい。
【００３０】
【表５】

表５より、塗布液収容室内圧を、常圧より２０ｍｍＨｇ以上にした場合、ボタ落ちする可能性がある。
【００３１】
【表６】

表６より、塗布液収容室内圧を、常圧より２０ｍｍＨｇ以上にした場合、ボタ落ちする可能性がある。
【００３２】
表５及び表６より、塗布液吸蔵体・塗布体に塗布液が供給されている場合、塗布液収容室の内圧は、常圧より低く設定するか、１０ｍｍＨｇ以下と設定することが望ましい。
【００３３】
確認試験：内圧差とは、塗布液収容室の圧力と通常使用環境の温度（２０℃）・気圧（１気圧）での外部圧力との差である。また、塗布液の浸透時間とは、塗布先に塗布液が浸透してきたことの分かる迄の時間である。
【００３４】
【発明の効果】
本発明に係る塗布具は、塗布部と塗布液収容室とを弁機構を介して連接すると共に、前記塗布部と弁機構との間に塗布液吸蔵体を配置し、最初の使用時に始めて開弁して、塗布液を塗布部へ供給するようなした弁式塗布具において、使用前の前記液収容室の内圧を、最初の使用時に始めて開弁する前に予め塗布液吸蔵体及び塗布体に塗布液が供給されていない場合には塗布液収容室の内圧を常圧の条件下で組み立てられた場合の内圧に対して強制的に高くなし、最初の使用時に始めて開弁する前に予め塗布液吸蔵体及び塗布体に塗布液が供給されている場合には塗布液収容室の内圧を常圧の条件下で組み立てられた場合の内圧に対して強制的に低くなしたので、塗布液収容室内部の内圧を調整する事で、塗布液の吐出量を制御し、塗布液の浸透速度を早く、且つボタ落ちを防止出来る様に設定できる。
【図面の簡単な説明】
【図１】本発明の一実施例の縦断面図。
【符号の説明】
１塗布体
２前軸
２ａ後端部
２ｂ係止段部
３先端貫通孔
４リブ
５塗布液吸蔵体
６突出筒部
６ａ座部
７蓋体
８後軸
９塗布液収容部
１０弾撥部材
１１弁体
１１ａ弁部
１２弁開放体
１２ａ後部
１２ｂ後端
１２ｃ突起部
１２ｄ脱落防止用突起
１３可動部
１３ａ有底筒状部
１３ｂ薄肉部
１４振れ防止用ガイド
１５尾栓[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an applicator for application liquids such as ink liquids, paints, writing liquids such as ink, and cosmetic liquids such as eyeliner and lip color. More specifically, the present invention relates to an applicator that disposes a valve mechanism between an application body such as a pen tip and an application liquid storage unit that directly stores an application liquid, and opens the valve mechanism to supply the application liquid to the application body.
[0002]
[Prior art]
Conventionally, a coating liquid storage chamber is provided in the shaft cylinder, a coating liquid discharge port provided with a valve mechanism is provided on the front wall of the coating liquid storage chamber, and a coating body is inserted into the front portion of the coating liquid discharge port. Many ingredients are known. For example, Japanese Utility Model Publication No. 61-20379 discloses a hollow main body for containing ink, a fiber pen attached to one end of the main body, and an ink storage body for storing ink supplied to the fiber pen. A guide holder and a valve body having a valve seat at the outer opening edge of the guide passage hole, and advancing and retracting into the guide passage hole of the valve body. A valve rod that is freely inserted and has a valve that contacts and separates from the valve seat at the front end portion thereof, and that has a rear end portion slidably engaged with a sliding portion at the other end portion of the main body, and the valve A spring interposed between the valve body and urging the valve rod so as to always press the valve of the valve rod against the valve seat, and provided at the rear end of the valve rod through a plastic sheet so as to be movable back and forth. A plastic sheet and a push button that pushes the valve against the spring. Devised to gist applicator, wherein is disclosed.
[0003]
When the push button is pressed, the applicator slides and moves the valve rod through the plastic sheet. When the valve rod presses the valve main body, the valve main body is moved in pressure contact with the valve seat, and ink is stored. In addition, the ink is supplied to the fiber pen and can be applied. In the case of such an applicator, it is often supplied to the market in a state where ink (application liquid) has not been supplied to the storage unit (application liquid storage body) or fiber pen (application body) in advance. This is because the pressure inside the coating liquid storage chamber is higher than the pressure outside the applicator in a special use environment such as when the applicator is used at a high temperature or at a low atmospheric pressure. This is to prevent the so-called “bottom drop” phenomenon that the coating liquid is excessively supplied when the valve is opened and the coating liquid overflows from the coating liquid storage body or the coating body. That is, when the coating liquid is not supplied to the coating liquid storage body or the coating body in advance, there is a risk that the coating liquid is absorbed by the coating liquid storage body or the coating body even if a large amount of coating liquid is supplied when the valve is opened. It means that the sex becomes less. In addition, there is also an advantage that when the coating liquid is not supplied to the coating liquid storage body or the coating body in advance, the user can easily determine whether the user is an unused product or an used product.
[0004]
[Problems to be solved by the invention]
As described above, when the coating liquid is not supplied to the coating liquid storage body and the coating body in advance, the risk of dropping off due to the above reasons is reduced. However, in a use environment under a generally used temperature or atmospheric pressure condition, there is little difference between the pressure inside the coating liquid container and the external atmospheric pressure. In such a case, the supply amount of the coating liquid when the valve is opened is smaller than in the case of the use conditions as described above. In addition, there is a drawback that it takes time until the coating solution can be applied by supplying the coating solution to the coating solution storage body or the coating body. In order to save the time until the coating can be performed, it is conceivable to supply a coating solution previously supplied to the coating solution storage body and the coating body to the market. However, in this case, when it is used when the temperature is high or the atmospheric pressure is low as described above, the dropping of the liquid tends to occur due to the pressure difference between the inside of the coating liquid storage chamber and the outside. This phenomenon is particularly remarkable when a coating liquid using a volatile solvent is used.
[0005]
In the present invention, when the coating liquid is not supplied to the coating liquid storage body and the coating body, the supply amount of the coating liquid at the time of opening the first valve is increased, and the coating liquid storage body and the coating body are quickly penetrated, Providing a valve-type applicator that can be applied immediately, and when the application liquid is supplied to the application liquid storage and application body, the external temperature is higher than the normal use temperature or the atmospheric pressure is lower It is an object of the present invention to provide a valve-type applicator that can reduce the amount of application liquid supplied when the valve is first opened under use conditions and can prevent dripping.
[0006]
[Means for Solving the Problems]
The present invention connects the application part and the application liquid storage chamber via a valve mechanism, arranges the application liquid storage body between the application part and the valve mechanism, and opens the valve for the first use, In the valve-type applicator that supplies the application liquid to the application unit, the application liquid is previously applied to the application liquid storage body and the application body before the internal pressure of the liquid storage chamber before use is opened for the first time at the first use. If it is not supplied, the internal pressure of the coating liquid storage chamber is forcibly increased relative to the internal pressure when assembled under normal pressure conditions, and the coating liquid storage body is preliminarily opened before the valve is opened for the first use. When the application liquid is supplied to the application body, the internal pressure of the application liquid storage chamber is forcibly reduced relative to the internal pressure when assembled under normal pressure conditions. The gist is used.
[0007]
[Action]
The applicator according to the present invention can discharge the coating liquid by adjusting the internal pressure of the coating liquid storage chamber to the capacity of the coating liquid occlusion body and the coating body even when the external temperature and pressure at the time of use are different. Since it has been adjusted in advance, when the user opens the valve mechanism for the first time use, it is hardly affected by the external temperature and pressure, and the appropriate coating liquid is supplied. It does not easily penetrate, and can prevent dripping from oversupply.
[0008]
【Example】
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional view of an applicator showing an embodiment of the present invention. Reference numeral 1 is an applied body made of a fiber bundle such as acrylic fiber, polyester fiber, nylon fiber, or rayon fiber, or a molded body such as urethane resin, polyester resin, nylon resin, or ceramic. The application body 1 is inserted into the small diameter portion of the tip through hole 3 of the front shaft 2 having a small diameter on the front (upward in the figure) and a large diameter on the rear.
[0009]
A plurality of ribs 4 are formed in the axial longitudinal direction on the inner wall of the front end through hole 3 of the front shaft 2, and the plurality of ribs 4 serve as air circulation holes.
[0010]
Behind the coated body 1 is a coating liquid occlusion body made of a cotton fiber as a bundle of fibers such as acrylic fiber, polyester fiber, nylon fiber, or rayon fiber, or a continuous air hole porous body of a soft resin such as urethane resin. 5 is arranged, and the rear part of the application body 1 is inserted into the front part of the application liquid storage body 5. The front shaft 2 is inserted and fixed in the front end opening of the rear shaft 8.
[0011]
A lid body 7 having a forward projecting cylindrical portion 6 is disposed behind the coating liquid storage body 5. The front part of the protruding cylinder part 6 is inserted into the rear part of the coating liquid storage body 5, and the lid body 7 is press-fitted to the rear end of the front shaft 2 and the inner wall of the rear shaft 8, It is a lid of the coating liquid storage part 9 formed inside the shaft 8.
[0012]
The coating liquid storage unit 9 needs to be pressurized or depressurized compared to the internal pressure of the coating liquid storage chamber when it is assembled under conditions of room temperature and normal pressure. This is because when a valve mechanism described later is opened for the first time, an appropriate amount of coating liquid is supplied to the coating liquid storage body 5 and the coating body 1. As a method for increasing the internal pressure of the coating liquid container 9, the inner diameter of the rear shaft 8 is made smaller than the outer diameter of the lid 7, and when the lid 7 is inserted, the air is forcibly compressed to reduce the internal pressure. When the coating liquid is filled at a temperature lower than normal temperature and the coating liquid storage chamber 9 is left in a room temperature usage environment, the temperature of the coating liquid inside the coating liquid storage chamber 9 rises and the internal pressure increases. Or a method in which after the applicator is commercialized, the valve mechanism is opened, and air is directly fed into the coating solution storage chamber to be in a pressurized state. Further, as a method of reducing the pressure inside the coating liquid storage unit 9, when the coating liquid is filled at a temperature higher than room temperature and the coating liquid storage chamber 9 is left in a use environment at a temperature lower than room temperature, the coating liquid is applied. After the coating liquid in the liquid storage chamber 9 is cooled and the internal pressure is lowered, or after the applicator is commercialized, the valve mechanism is opened, and air is directly sucked from the coating liquid storage chamber to reduce the pressure. A method etc. can be adopted.
[0013]
A seat portion 6 a is formed at the lower portion of the inner wall of the protruding portion 6. The seat portion 6a is slidably disposed inside the protruding cylindrical portion 6 and abuts against a valve portion 11a provided on a valve body 11 urged rearward by a resilient member 10 such as a coil spring. The mechanism is configured. Further, the valve body 11 has a lower bending elastic modulus than the material of the lid body 7, has a tensile stress at break (JIS K7113 measurement method) of 200 kg / cm 2 or more, and is injection-molded with polypropylene or a blend of polypropylene and polyethylene. Those are preferred. Furthermore, in order to improve the sealing performance of the valve 11, a lubricant may be applied to the valve portion 11a, or a fatty acid-based slip agent may be mixed in the valve 11 before molding.
[0014]
This valve mechanism is a coating liquid discharge port of the coating liquid storage part 9, and the opening end of the continuous protruding cylinder part 6 is a substantial coating liquid discharge port.
[0015]
The valve body 11 has a rear part 11 b extending through the lid body 7 and extending into the coating liquid storage part 9, and a rear part of the rear part 11 b is a cylindrical valve disposed in the coating liquid storage part 9. Inserted and fixed to the front end of the open body 12.
[0016]
The valve opening body 12 is inserted into the bottomed cylindrical portion 13 a of the movable portion 13 whose rear portion is the bottom portion of the coating liquid storage portion 9. The rear end 12b of the valve opening body 12 and the bottom surface of the bottomed cylindrical portion 13a have a slight gap. This is a play when the bottomed cylindrical portion 13a is pushed forward to open the valve mechanism. The movable portion 13 is a portion that transmits a knocking operation to the valve opening body 12, and is composed of the bottomed cylindrical portion 13a and the thin portion 13b, and is formed integrally with the rear shaft 8 on the inner wall of the coating liquid storage portion 9. Yes. The movable portion 13 formed integrally with the rear shaft 8 is made of polypropylene having a bending elastic modulus (measurement method defined in JIS 7203) of 10,000 kg / cm ² or less in order to reduce the load necessary for movement as much as possible. Or the one injection-molded with a blend of polypropylene and polyethylene is preferred.
[0017]
The shake prevention guide 14 provided on the valve opening body 12 is four protrusions provided on the rear side of the valve opening body 12. These four protrusions are provided in a cross direction so that a slight gap is formed between the tip and the inner wall of the coating liquid storage portion so that the valve opening body 12 does not swing and deviate from the inner wall of the coating liquid storage portion 9. Forming. Further, in order to improve the assemblability, a taper is provided which spreads from the rear side of the valve opening body 12 to the lateral shake prevention guide 14. It is preferable in terms of molding that one or two of the protrusions provided in the cross direction are shifted from the other protrusions in the front-rear direction. The valve opening body 12 has a bending elastic modulus of 9,000 Kg / cm ² or more so that the valve opening body 12 is not easily damaged when the valve is opened, and is not stress-ruptured by the elastic force of the elastic member 10. It is preferable that the tensile stress breaking point is molded from a resin such as polypropylene, polyacetal, polyamide, or polyethylene having a tensile stress breaking point of 200 kg / cm ² or more.
[0018]
The rear portion 12a of the valve opening body 12 is made thinner than the opening diameter of the bottomed cylindrical portion 13a, so that when the valve opening body 12 is inserted into the coating liquid storage portion 9 during assembly, Even if a slight fluctuation due to a slight gap between the inner wall of the coating liquid storage portion 9 occurs, the rear portion 12a can be reliably inserted into the bottomed cylindrical portion 13a, and product assembly can be facilitated. Further, the rear end 12b of the valve opening body 12 is preferably R-shaped or pointed to be easily inserted into the bottomed cylindrical portion 13a, which is preferable in terms of product assembly. The protrusion 12c of the valve opening body 12 is a locking portion of the elastic member 10.
[0019]
The tail plug 15 is a bottomed cylindrical body composed of a large cylindrical portion 15a provided with an all-around rib that can be fitted with a cap on the outer wall, and a small cylindrical portion 15b formed with a spiral groove on the inner wall. The tail plug 15 has a small tube portion of the tail plug 15 formed to have a diameter smaller than the rib outer diameter from the rear ends of the plurality of ribs provided in the axial longitudinal direction on the outer wall of the bottomed cylindrical body 13a at the rear end of the rear shaft 8. The tip opening of the spiral groove in the inner wall portion 15b is press-fitted. Further, the tail plug 15 is formed of a resin or metal having a lower bending elastic modulus than the material of the rear shaft 8, or if the small tube portion 15b is formed with a thickness that is difficult to bend, It is preferable that the spiral groove of the tail plug 15 bites into the rib of the shaft 8 over time, and the low-cylindrical portion 13a and the tail plug 15 are not easily detached.
[0020]
Next, the usage method will be described. When a pressing force is applied to the tail plug 15, the thin-walled portion 13 b of the movable portion 13 is deformed and the bottomed tubular portion 13 a moves forward, and the bottom surface of the bottomed tubular portion 13 a resists the biasing force of the elastic body 10. Then, the valve opening body 12 and the valve body 11 are advanced, the valve portion 11a and the seat portion 6a are separated from each other, and the valve mechanism is opened. At this time, the valve opening body 12 moves in the coating liquid storage unit 9 while being prevented from shaking by the shake prevention guide 14.
[0021]
When the valve mechanism is opened, the coating liquid in the coating liquid storage portion 9 passes through the protruding cylinder portion 6 and is discharged into the coating liquid storage body 5 and further passes through the coating liquid storage body 5 to the coating body 1. It can be supplied and applied.
[0022]
At this time, Tables 1 to 6 show the initial discharge amount of the coating liquid, the coating liquid discharge time, and the presence or absence of dripping when the internal pressure of the coating liquid storage unit 9 is changed. In conducting the test, as the applicator, a commercially available rear end knock type valve applicator (knockle, manufactured by Pentel Co., Ltd.) was used.
[0023]
[Table 1]

From Table 1, by increasing the pressure inside the coating solution storage chamber by 50 mmHg or more from the normal pressure, the coating solution penetrates the coating body in a short time regardless of whether the usage environment is significantly higher or lower than room temperature (20 ° C.). I understand that
[0024]
[Table 2]

From Table 2, it can be seen that if the coating liquid storage chamber pressure is higher than the normal pressure by 80 mmHg or more, the operating environment is significantly higher than the normal temperature, there is a possibility of dropping.
[0025]
From Table 1 and Table 2, when the coating liquid is not supplied to the coating liquid storage / applying body, the internal pressure of the coating liquid storage chamber is set to be higher by about 50 mmHg than the normal pressure, so that the penetration of the coating liquid is good and the external temperature It can be seen that even if it is high, it is difficult to drop.
[0026]
[Table 3]

From Table 3, the coating liquid can be applied in a short time regardless of whether the usage environment is significantly higher or lower than the room pressure (1.0 atm) by increasing the coating liquid storage chamber pressure by 50 mmHg or more from the normal pressure. It can be seen that it penetrates.
[0027]
[Table 4]

From Table 4, when the coating liquid accommodation chamber pressure is higher than the normal pressure by 80 mmHg or more, there is a possibility that the liquid drops when the use environment is significantly lower than the normal pressure.
From Tables 3 and 4, when the coating solution is not supplied to the coating solution storage / applying body, the internal pressure of the coating solution storage chamber is set to be about 50 mmHg higher than the normal pressure, so that the coating solution can penetrate. It can be seen that even if the external air pressure is high, it is difficult to drop.
In summary, the results in Tables 1 to 4 are summarized as follows. When the coating liquid is not supplied to the coating liquid storage / applying body, the internal pressure of the coating liquid storage chamber can be set higher by about 50 mmHg than the normal pressure. desirable.
[0030]
[Table 5]

From Table 5, when the coating liquid accommodation chamber pressure is set to 20 mmHg or more from the normal pressure, there is a possibility of dropping.
[0031]
[Table 6]

From Table 6, when the coating solution containing chamber pressure is set to 20 mmHg or more from the normal pressure, there is a possibility that it will fall off.
[0032]
From Tables 5 and 6, when the coating liquid is supplied to the coating liquid storage / applying body, it is desirable to set the internal pressure of the coating liquid storage chamber to be lower than the normal pressure or to be 10 mmHg or less.
[0033]
Confirmation test: The internal pressure difference is the difference between the pressure in the coating solution storage chamber and the external pressure at the temperature (20 ° C.) and atmospheric pressure (1 atm) in the normal use environment. The penetration time of the coating solution is a time until it is understood that the coating solution has penetrated into the coating destination.
[0034]
【The invention's effect】
The applicator according to the present invention connects the application part and the application liquid storage chamber via a valve mechanism, and arranges an application liquid occlusion body between the application part and the valve mechanism, and is opened for the first use. In the valve-type applicator that supplies the application liquid to the application part, the internal pressure of the liquid storage chamber before use is preliminarily opened before the first use and the application liquid storage body and the application body are preliminarily opened. If the coating liquid is not supplied to the chamber, the internal pressure of the coating liquid storage chamber is forcibly increased with respect to the internal pressure when assembled under normal pressure conditions. because when the coating liquid is supplied to the coating liquid absorbing material and the coating material was no forced lower than the internal pressure in the case where the assembled inner pressure of the coating liquid storage chamber under the conditions of normal pressure, coating solution By adjusting the internal pressure inside the storage chamber, the discharge rate of the coating liquid is controlled, and the coating liquid is immersed. Increase the speed, and can be set so as it is able to prevent dripping.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Application body 2 Front axis | shaft 2a Rear end part 2b Locking step part 3 Front end through-hole 4 Rib 5 Coating liquid occlusion body 6 Projection cylinder part 6a Seat part 7 Lid body 8 Rear axis | shaft 9 Coating liquid storage part 10 Repulsion member 11 Valve Body 11a Valve part 12 Valve open body 12a Rear part 12b Rear end 12c Protrusion part 12d Drop-off prevention protrusion 13 Movable part 13a Bottomed cylindrical part 13b Thin wall part 14 Shake prevention guide 15 Tail plug

Claims

The application part and the application liquid storage chamber are connected via a valve mechanism, and an application liquid storage body is arranged between the application part and the valve mechanism, and the valve is opened for the first use to apply the application liquid. In the valve-type applicator supplied to the part, the application liquid is not supplied to the application liquid storage body and the application body in advance before the internal pressure of the liquid storage chamber before use is opened for the first time at the first use. In this case, the internal pressure of the coating liquid storage chamber is forcibly increased with respect to the internal pressure when assembled under normal pressure conditions. A valve-type applicator characterized in that when an application liquid is supplied, the internal pressure of the application liquid storage chamber is forcibly lowered relative to the internal pressure when assembled under normal pressure conditions .

The valve-type applicator according to claim 1, wherein the application liquid is not previously supplied to the application liquid storage body and the application body before the internal pressure of the liquid storage chamber before use is opened for the first time at the first use. The internal pressure of the coating liquid storage chamber is forcibly increased in the range up to +50 mmHg with respect to the internal pressure when assembled under normal pressure conditions, and the coating liquid storage body is previously opened before the valve is opened for the first use. When the coating liquid is supplied to the coating body, the internal pressure of the coating liquid storage chamber is forcibly lowered within the range up to -10 mmHg with respect to the internal pressure when assembled under normal pressure conditions. Features a valve-type applicator.