【０００１】
【発明の属する技術分野】
本発明は、塗布液を内蔵した軸筒の前方に塗布先ホルダーを有し、その塗布先ホルダー先端に配置した棒状の塗布先と、塗布先ホルダーの後方に配置した弁機構とよりなり、前記塗布先ホルダーの内面に前記塗布先の周囲と接する複数の縦リブ部を形成した塗布具に関するのもであり、前記塗布液の１例としては、塗料、絵の具、インキ、修正液、化粧料、薬剤、補修剤、コーティング剤などが挙げられる。
【０００２】
【従来の技術】
塗布液を内蔵した容器と、容器の前端に内蔵の塗布液を塗りならす塗布先と、塗布先の乾燥防止・塗布先を保護する脱着が簡易なキャップとで構成した塗布具が、一般的に知られている。その塗布具の中には、塗布先を紙面等に押し付けて塗布先を後退させることによって、塗布先後方に配置したコイルスプリングで付勢された弁を開くようにして、内蔵の塗布液を塗布先に供給する構造となした、所謂、塗布先ノック式塗布具がある。
その塗布先ノック式塗布具の１例が特許文献１である。その公報には、内部にインキ収納部２を形成し、インキ攪拌用のボール４を内臓した本体１と、この本体１の先端部に液密状に挿入されて通孔９を有する弁本体６と、弁本体６の通孔９に進退自在に挿通され弁本体６の弁座１０に接離する弁杆１２と、弁杆１２を前方に付勢するコイルスプリング１５と、前記弁本体６先方に配置された筒状の先端内側の軸方向に複数の突条２０を形成したペンホルダー１６と、ペンホルダー１６先端に挿入された多孔質繊維束などからなる棒状のペン先２１と、ペン先２１の後方周囲を覆うようにペンホルダー１６内側に介装された筒状のスポンジ等のインキ貯留体１９とで構成された筆記具が開示されている。
この筆記具は、ペン先２１をコイルスプリング１５に抗して垂直に紙面等に押し付けると、弁杆１２が弁本体６の弁座１０から離れ弁機構部が開弁する。これを繰り返すと、本体１内蔵のインキがペン先２１へと導出される。
【０００３】
前記ペン先２１の後部周囲を覆うスポンジのインキ貯留体１９は、インキを極部的に保持する働きと、ペン先２１を紙面に押し付けインキが吐出する際、本体１のインキが弁機構部からペン先２１にかけて余分に導出するのを抑える働きをしている。
弁機構部が開いていても、インキ貯留体１９とペン先２１とインキとによる液密状態が壁となって、本体１内部から出ようとするインキ量分の空気がペン先２１外部から本体１内部に入ろうとするのを抑制するものである。この現象が、空気交換抑制作用である。
尚、ペンホルダー１６の突条２０は、ペン先２１を筆記時に傾かないようにする働きと、筆記時にペン先２１が自重で落下しないように保持する働きと、ペン先２１とインキ貯留体１９とインキとによる液密状態部へ空気が入り込み易くする働きがある。
さらに、ペン先２１の保護や乾燥防止のためのキャップ内面へのインキ付着を低減するため、ペン先ホルダー１６の前方にインキが溜り難いように、ペン先ホルダー１６の突条２０の根元径とペン先２１径との径差である空間は、毛管力で塗布液を保持させないように、広めに形成している。
【０００４】
【特許文献１】
特公昭６２−１０５８２号公報（公報第３欄第１４行目〜同欄第２９行目、第１図）。
【０００５】
【発明が解決しようとする課題】
日本国内の産業界においては、消費者の低価格志向と、海外の低価格品攻勢に対向するため、製品の部品数を削減して部品費や組立費の低減が求められている。
そこで、本発明は、従来用いられていたスポンジ部品を削減して、塗布先とスポンジ部品が果たしていた空気交換抑制作用を、前記スポンジ部品以外の他構成部品に持たせた塗布具を提供することにある。
一般的な塗布先ノック式塗布具では、塗布先を繰り返しノックさせて内蔵の塗布液を吐出させるのに、塗布先の繰り返しノック回数が多いと、塗布液吐出までの操作が面倒となる。そこで、塗布液を吐出させるのに、塗布先の繰り返しノック回数を少なくしようとすると、塗布先をノックした時に塗布液が過剰吐出してしまうことがある。塗布液を吐出させるのに、塗布先の繰り返しノック回数を少なくし、且つ、塗布先をノックした時の過剰吐出を抑える施策としては、塗布液が吸蔵された塗布先とスポンジとの液密状態（＝「塗布先周囲面とスポンジ内面との密接程度」＝「塗布先周囲面とスポンジ内面との間隙（空気交換抑制間隙）」）を適度に設定する必要があり、この空気交換抑制間隙は、内蔵の塗布液粘度が低い場合は空気の移動抵抗が低くなるので空気交換抑制間隙を少なくし、塗布液粘度が高い場合は空気の移動抵抗が高くなるので空気交換抑制間隙を大きくしなければならない。また、スポンジは多孔質で連通気孔を形成しているが、スポンジの連通気孔は立体的な網目状に形成されていて、スポンジの立体的な網目状内部で空気交換させるには、空気が直線状に移動するのではなく、微細な壁部に当接し回避ながらジグザグ状に移動するので、相当粗い網目状にしなければならない。尚、スポンジ内部で空気交換をしうる粗さとした場合には、毛管作用が働かなくなるので、塗布液は重力方向に直ぐに移動してしまい吸蔵体としての機能（保持機能）を果たさない。
【０００６】
【課題を解決するための手段】
本発明は、塗布液を内蔵した軸筒の前方に塗布先ホルダーを有し、その塗布先ホルダー先端に配置した棒状の塗布先と、塗布先ホルダーの後方に配置した弁機構とよりなり、前記塗布先ホルダーの内面に前記塗布先の周囲と接する複数の縦リブ部を形成した塗布具において、前記塗布先ホルダーの縦リブ部に、前記塗布先周囲との間に隙間を形成する環状部を設け、その隙間を空気交換抑制部としたことを要旨とする。
【０００７】
【実施例】
図１〜図４に第１実施例を示す。図１は塗布具の正縦断面図を示し、図２は塗布先５を仮設した塗布先ホルダー４の縦半断面図を示し、図３は図２の上面図を示す。参照符号１は、前端が開口した有底筒状の後軸である。この後軸１の内部は塗布液収容室となっていて、顔料等の沈降性質がある塗布液が充填された場合に、沈降顔料を再分散させるための略棒状の塗布液攪拌体２を内蔵している。尚、本実施例における塗布液の粘度は、３５±１５ｍＰａ・ｓ以下となっている。前記後軸１は熱可塑性樹脂材料で、ブロー成形法により形成される。本実施例では、後軸１の筒部厚さを手で押圧して変形しうる厚さとなるよう形成されている。具体的に、後軸１の材料は６ナイロンのブローグレード、筒部直径は１５．４０±０．３０ｍｍ、筒部の厚さは０．７０±０．１０ｍｍとなっている。
後軸１の開口部には、後軸１と螺合結合するように、前後貫通した略筒状の前軸３を取り付けている。その前軸３は前方が単筒状の前筒部と、後方が二重筒の外筒部と内筒部とから形成されている。内筒部先端から軸心に向け平板状部を設け、この平板状部の軸心は開孔している。この開孔の後端から後方に漏斗状に広がるように弁座部を設けている。前軸３の前方開口部には、前軸３前端より突出するように、前後貫通した略筒状の塗布先ホルダー４を取り付けている。
【０００８】
この塗布先ホルダー４の内部から前方部分が突出するように、塗布液導出作用のある塗布先５が挿入されている。この塗布先５は、ポリアクリルニトリル繊維やポリエステル繊維、ナイロン繊維、レーヨン系繊維などの繊維結束体や、ウレタン系樹脂やポリエステル系樹脂、ナイロン系樹脂などの成形体などより形成されており、略棒状で、前後対称形となっている。尚、塗布先５の外径は、２．９８±０．０５ｍｍとなっている。
【０００９】
前記、塗布先ホルダー４は、略筒状で、前後略中間位置で漏斗状に広がり、さらに、後方に向けて拡径した筒状となすように設けている。この塗布先ホルダー４の内面には、前端から後方に向けて、軸心側に突出したリブを放射状に４本配置した縦リブ部４ａを、塗布先５の外周面と軽く圧接するように設けている。縦リブ部４ａ後端には、軸心に向けて縮径し、塗布先５の外径より僅かに大きな内孔とし、その内孔の内径より軸方向の長さを短くした環状部４ｂを設けている。即ち、塗布先５の外周囲と塗布先ホルダー４の環状部４ｂの内周囲とで、微少間隙となす空気交換抑制部６を設けている。
尚、塗布先ホルダー４の縦リブ部４ａは環状部４ｂの後端まで、環状部４ｂ内周より僅かに軸心に向け突出するように設けている。これは、塗布先ホルダー４の縦リブ部４ａを塗布先５周囲に軽く圧接させることにより、塗布先５の周囲と塗布先ホルダー４の環状部４ｂとで設けられた空気交換抑制部６が、全周にわたって均一な間隙となっている。すなわち、空気交換抑制部６が、偏心した空隙とならないようにしているのである。
【００１０】
また、塗布先５は塗布先ホルダー４の縦リブ部４ａのみの線接触とし、塗布先５と環状部４ｂが面接触しないようにもしたものでもある。これは、塗布先５の外径のバラツキが比較的大きいので、塗布先５と塗布先ホルダー４の縦リブ部４ａとの接触荷重バラツキが抑えられるように線接触させているものである。さらに、塗布先ホルダー４の環状部４ｂの軸方向長さを内孔より短くしているのは、環状部４ｂ前方の縦リブ部４ａ周囲の空間を確保して、塗布液が溜り難いようにしているのである。
塗布先５と塗布先ホルダー４の接触荷重を高くする必要がある場合には、塗布先５と塗布先ホルダー４の環状部４ｂを面状で圧接させても良い。また、低粘度塗布液を充填する場合は、塗布液粘度が低くなる程、空気交換がし易くなるので、塗布先ホルダー４の縦リブ部４ａの内接径と環状部４ｂの内径を同一にして、空気交換抑制部６の間隙を少なくすれば良い。ちなみに、塗布先５の周囲と塗布先ホルダー４の環状部４ｂが面接触しても、塗布先５は多数の微細な繊維で形成され、その表面は凹凸状に形成されているので、塗布先５表面の微細な凹部が、空気交換抑制部６となす微少間隙となる。尚、塗布先ホルダー４の環状部４ｂ内径は３．１０±０．０５ｍｍとなっており、縦リブ部４ａの内接径は２．９８±０．０５ｍｍ、空気交換抑制部６の寸法は０．０２〜０．２２ｍｍとなっている。
【００１１】
前軸３の内筒部の内側に、弾発性機能を有するバネ部と、弁機構の構成要素である弁部とを兼ね備えたバネ弁７を設けている。バネ弁５の後端は、前記前軸２の内筒部の後端と凹凸結合させている。バネ弁５は先端に前端が閉じた前筒部を設け、前筒部後方に球状面となす弁部を設け、弁部後方に拡径した中筒部を設けている。このバネ弁５のバネ部により付勢された弁部を、前軸２の弁座部と圧接させることにより、開閉可能な弁機構となしている。参照符号８は、クリップ機能を備えたキャップである。キャップ８は、前軸３に脱着が簡易で、非使用時には、塗布先５を保護し、塗布先５等に保持された塗布液の乾燥を防止するため、前軸３に嵌合時は前軸３と空気密閉されるように形成されている。
【００１２】
本塗布具では、前軸３と塗布先ホルダー４を別体で示したが、従来技術の欄で示したように、前軸３と塗布先ホルダー４を一体にし、前軸３の中筒部を別体に設けても良い。
又、本塗布具に染料等の沈降性質が低い塗布液を内蔵する場合は、塗布液攪拌体を用いなくても良い。
【００１３】
第１実施例の作用・効果について説明する。塗布具の塗布先５を、バネ弁７のバネ部に抗して、紙面等に数回、繰り返して押し付けると、弁機構が繰り返し開閉し、後軸に内蔵した塗布液が、弁機構部を通過して塗布先の後端から前方へと浸透する。同時に塗布液は、塗布先ホルダー内面や空気交換抑制部の後方周囲に付着する。さらに、塗布先を繰り返して紙面等に押しつけることにより、塗布液を塗布先の前端迄、充分に浸透させた後は、紙面等に塗布液を塗布することが出来るようになる。
他の吐出方法として、塗布先を紙面等に押し付けた状態で、後軸側面を押圧する方法がある。この方法では、後軸を変形させることにより、後軸内部が加圧状態となるので、後軸内の塗布液を塗布先の前方へと、速やかに浸透させることが出来るので、繰り返して塗布先を紙面等に押し付けなくても良い。この方法によれば、塗布先の紙面に対する押圧操作が低減するため、塗布先の先端の変形も低減出来るものである。ちなみに、後軸の変形の容易性は、塗布先を紙面等に押し付けた際、後軸に対する保持力では変形しない程度に設定することが必要である。これは、塗布先を押し付けただけで吐出させようとした場合に、後軸を保持した力でその後軸が押圧変形されないようにするためである。
【００１４】
ここで、塗布液が塗布先５や空気交換抑制部６の後方に貯えられた後、さらに、塗布先５を紙面等に押し付けて塗布液を吐出させようとしても、空気交換抑制部６に塗布液が液密状態となり、塗布液の壁が形成され、塗布先５の外部からの空気が空気交換抑制部６を通過し難くなり、その結果、後軸１からの塗布液の導出も抑制されるのである。
但し、先に述べた様に、塗布先５を紙面等に押し付けた状態で、後軸１の側面を押圧することによって塗布液を吐出させる方法においては、空気交換抑制部６に塗布液が液密状態となっていても、後軸１内の圧力が高まり、空気交換抑制部６の抑制力以上の吐出力が働き、塗布液の導出を抑制することが困難な場合が生じてしまうこともある。故に、この塗布先を紙面等に押し付けた状態で、後軸の側面を押圧しての塗布液を吐出させる方法は、新品の塗布具を購入し最初に塗布液を速やかに吐出させる場合に、有効な方法と云える。また、キャップを嵌め忘れたときなど、塗布先の周囲が塗布液で極部的に固化（塗布液乾燥詰まり）した場合であっても、後軸内の固まっていない塗布液を強制的に吐出させることによって、その固化した塗布液を破壊することができるので、塗布液乾燥詰まりを修復するのに有効な方法と云える。
【００１５】
尚、本実施例では、従来用いられていたスポンジ部品を削減して、ペン芯とスポンジ部品が果たしていた空気交換抑制作用を、塗布先と塗布先ホルダーの環状部からなる空気交換抑制部で行い、塗布液粘度に応じた適度な空気交換抑制部の間隙を設定しているので、従来用いられていたスポンジ部品を削減でき、部品コストの低減を果たすものとなっている。また、スポンジ部品を削減できるので、組立工数も減少し、組立コストの低減も果たしている。さらに、部品数が削減された分、部品間の組合せによるバラツキや、各部品同士の組立方法などによるバラツキが低減できるので、そのバラツキが低減できた分、品質の安定化も果たしている。
【００１６】
図５〜図７に第２実施例を示す。図４は塗布具の要部正縦断面図を示し、図６は塗布先１５を仮設した（図中２点鎖線）塗布先ホルダー１４の縦半断面図を示し、図７は図６の上面図を示す。前軸３やバネ弁７は、前記第１実施例と同様な構成であるので、その説明を省略する。参照符号１１は、第１実施例の塗布液収容室を太くした後軸であって、前軸３と螺合・結合している。尚、後軸１の材料はポリプロピレンのブローグレードとなっており、筒部直径２０は２０±０．３０ｍｍ、筒部厚さが０．７５±０．１０ｍｍとなっている。
その前軸３の前方開口部には、前軸３の前端より突出した、前後に貫通した略筒状の塗布先ホルダー１４が取り付けられている。この塗布先ホルダー１４には、その内部から前方部分が突出し得るように、全体が前記第１実施例の塗布先５よりも太い塗布先１５が挿入されている。その塗布先１５は、先端の両側面が斜め裾広がり状に形成された、所謂、チズル形状の塗布液導出作用を有している。尚、塗布先１５の外径は、７．５０±０．０５ｍｍとなっている。
【００１７】
前記塗布先ホルダー１４は、略筒状をなしている。この塗布先ホルダー１４の内面には、前端から後方に向けて、軸心側に突出した縦リブ部１４ａが放射状に６本配置されており、前記塗布先１５に軽く圧接されている。又、縦リブ部１４ａの後端には、軸心に向けて縮径し、且つ、塗布先１５の外径より僅かに大きな内孔を有した環状部１４ｂが形成されている。つまり、塗布先１５の周囲と塗布先ホルダー１４の環状部１４ｂとで、微少間隙となす空気交換抑制部１６を設けている。また、前記塗布先ホルダー１４の縦リブ部１４ａは、前記第１実施例と同様に、環状部１４ｂの後端まで、環状部１４ｂ内周より僅かに軸心に向け突出するように設けられている。尚、塗布先ホルダーの環状部１４ｂ内径は７．６０±０．０５ｍｍであり、縦リブ部１４ａ内接径は７．５０±０．０５ｍｍ、空気交換抑制部１６は０〜０．２０ｍｍの隙間が形成されている。
符号１８は、クリップ機能を備えたキャップであり、そのキャップ１８は、第１実施例のキャップ８より、前方形状を太くした以外は、前軸３との嵌合形状などほぼ同様である。
【００１８】
第２実施例の作用効果について説明する。前記第１実施例と略同様であるが、塗布先１５を幅広の筆跡が得られよう太くすると共に、チズル形状にしても、前記前軸やバネ弁等を共通部品とすることができるので、太さの異なる塗布先を用いて、他構成部品を別個にして、共通部品を用いない製品形態で生産するよりも、生産性が向上する。
【００１９】
図８、図９に第３実施例を示す。図８は第１実施例の塗布先５を仮設した（図中２点鎖線）塗布先ホルダー２４の縦半断面図であり、図９は図８の底面図である。塗布先ホルダー２４以外の構成は、第１実施例と同様である。又、その塗布先ホルダー２４の外形形状や縦リブ部４ａ、環状部４ｂ、ならびに、塗布先５の周囲と塗布先ホルダー２４の環状部４ｂとで形成される空気交換抑制部６も、前記第１実施例と同様である。本実施例と前記第１実施例との相違点は、塗布先ホルダー２４の後方内面の形状にある。具体的に説明すると、塗布先ホルダー２４の環状部４ｂの後方内面には、軸心側に突出した薄板状の後方縦リブ部２４ｃが放射状に１２枚形成されており、その後方縦リブ部２４ｃの間には、毛管作用を形成する縦溝部２４ｄが形成されている。その縦溝部２４ｄは、塗布液吸蔵機能を持たせるように設けたものである。
【００２０】
第３実施例の作用・効果について説明する。第１実施例と略同様であるが、本実施例においては、塗布先ホルダー２４の後方縦リブ部２４ｃ間に設けられた、毛管作用を有する縦溝部２４ｄにより塗布液吸蔵機能を有している。これにより、従来技術で示したスポンジ部品の様なインキ保持機能を付加することができる。故に、塗布液が塗布先５や空気交換抑制部６の後方に貯えられた後、さらに、塗布先５を紙面等に押し付けて塗布液を吐出させようとしたときには、空気交換抑制部６による塗布液の導出抑制に加えて、縦溝部２４ｄによる塗布液吸蔵機能により、前記塗布液の導出抑制がより高められる。
【００２１】
【発明の効果】
本発明は、塗布液を内蔵した軸筒の前方に塗布先ホルダーを有し、その塗布先ホルダー先端に配置した棒状の塗布先と、塗布先ホルダーの後方に配置した弁機構とよりなり、前記塗布先ホルダーの内面に前記塗布先の周囲と接する複数の縦リブ部を形成した塗布具において、前記塗布先ホルダーの縦リブ部に、前記塗布先周囲との間に隙間を形成する環状部を設け、その隙間を空気交換抑制部としたので、ペン芯とスポンジ部品が果たしていた空気交換抑制作用を、塗布先と塗布先ホルダーの環状部からなる空気交換抑制部にて作用させているので、従来用いられていたスポンジ部品を削減出来、部品費や組立費の低減を果たすものである。
【図面の簡単な説明】
【図１】第１実施例の正縦断面図。
【図２】第１実施例の塗布先を仮設した塗布先ホルダーの縦断面図。
【図３】図２の上面図。
【図４】図２の要部拡大図。
【図５】第２実施例の要部正縦断面図。
【図６】第２実施例の塗布先を仮設した塗布先ホルダーの縦断面図。
【図７】図６の上面図。
【図８】第３実施例の塗布先を仮設した塗布先ホルダーの縦断面図。
【図９】図８の底面図。
【符号の説明】
１、１１ 後軸
２ 塗布液攪拌体
３ 前軸
４、１４、２４ 塗布先ホルダー
４ａ、１４ａ 縦リブ部
４ｂ、１４ｂ 環状部
２４ｃ 後方縦リブ部
２４ｄ 縦溝部
５、１５ 塗布先
６、１６ 空気交換抑制部
７ バネ弁
８ キャップ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention has a coating destination holder in front of a shaft cylinder containing a coating liquid, and comprises a rod-shaped coating destination disposed at the tip of the coating destination holder, and a valve mechanism disposed behind the coating destination holder, The present invention also relates to an applicator in which a plurality of vertical ribs that are in contact with the periphery of the application destination are formed on the inner surface of the application destination holder. As an example of the application liquid, paint, paint, ink, correction liquid, cosmetic, Drugs, repair agents, coating agents and the like can be mentioned.
[0002]
[Prior art]
An applicator consisting of a container with a built-in coating solution, a coating destination that coats the built-in coating solution at the front end of the container, and a cap that can be easily attached and detached to prevent drying of the coating destination and protect the coating destination is generally used. Are known. In the applicator, the applicator is pressed against the paper surface, etc., and the applicator is retracted, so that the valve energized by the coil spring arranged behind the applicator is opened, and the built-in applicator is applied. There is a so-called application destination knock type applicator having a structure to supply first.
Patent Document 1 discloses an example of the application type knock application device. The publication discloses a main body 1 in which an ink storage section 2 is formed and a ball 4 for stirring ink is built in, and a valve main body 6 having a through hole 9 which is inserted in a tip end of the main body 1 in a liquid-tight manner. A valve rod 12 which is inserted into the through hole 9 of the valve body 6 so as to be able to advance and retreat, and which comes into contact with and separates from the valve seat 10 of the valve body 6; a coil spring 15 for urging the valve rod 12 forward; A pen holder 16 formed with a plurality of ridges 20 in the axial direction inside a cylindrical tip disposed in a cylindrical shape, a rod-shaped pen tip 21 made of a porous fiber bundle inserted into the tip of the pen holder 16, and a pen tip 21. There is disclosed a writing implement including an ink reservoir 19 such as a tubular sponge interposed inside the pen holder 16 so as to cover the rear periphery.
In this writing instrument, when the pen tip 21 is pressed vertically against the paper surface against the coil spring 15, the valve rod 12 is separated from the valve seat 10 of the valve body 6, and the valve mechanism is opened. By repeating this, the ink contained in the main body 1 is led out to the pen tip 21.
[0003]
A sponge ink reservoir 19 covering the periphery of the rear part of the pen tip 21 serves to hold the ink extremely, and when the pen tip 21 is pressed against the paper surface and the ink is ejected, the ink of the main body 1 is discharged from the valve mechanism. It serves to suppress extra lead-out over the pen tip 21.
Even when the valve mechanism is open, the liquid-tight state of the ink reservoir 19, the pen tip 21 and the ink forms a wall, and the air corresponding to the amount of ink that is going to exit from the inside of the main body 1 flows from the outside of the pen tip 21 to the main body. 1 is suppressed. This phenomenon is the air exchange suppressing action.
The projections 20 of the pen holder 16 serve to prevent the pen tip 21 from tilting during writing, to hold the pen tip 21 from falling by its own weight at the time of writing, and to provide the pen tip 21 and the ink reservoir 19 with each other. It has the function of making it easier for air to enter the liquid-tight state due to ink.
Furthermore, in order to protect the pen tip 21 and to prevent ink from adhering to the inner surface of the cap for preventing drying, the root diameter of the ridge 20 of the pen tip holder 16 is adjusted so that ink does not easily pool in front of the pen tip holder 16. The space, which is the diameter difference from the pen tip 21 diameter, is formed wider so as not to hold the application liquid by capillary force.
[0004]
[Patent Document 1]
Japanese Patent Publication No. Sho 62-10581 (Publication, column 3, line 14 to column 29, line 1, FIG. 1).
[0005]
[Problems to be solved by the invention]
In the Japanese industry, in order to oppose consumers' low-priced products and overseas low-priced products, there is a need to reduce the number of parts of products and reduce the cost of parts and assembly.
Therefore, the present invention provides an applicator in which the conventionally used sponge parts are reduced, and the air exchange suppressing action performed by the application destination and the sponge parts is given to other components other than the sponge parts. It is in.
In a general application destination knocking type applicator, when the application destination is repeatedly knocked and the built-in application liquid is discharged, if the number of repeated knocks of the application destination is large, the operation until the application liquid is discharged becomes troublesome. Therefore, if the number of repeated knocks at the application destination is reduced to discharge the application liquid, the application liquid may be excessively discharged when the application destination is knocked. In order to discharge the coating liquid, the number of repeated knocks at the coating destination is reduced, and measures to suppress excessive discharge when the coating destination is knocked include a liquid-tight state between the coating destination where the coating liquid is absorbed and the sponge. (= “The degree of close contact between the peripheral surface of the coating destination and the inner surface of the sponge” = “the gap between the peripheral surface of the coating destination and the inner surface of the sponge (air exchange suppression gap)”) must be set appropriately. If the viscosity of the built-in coating liquid is low, the air movement resistance is low, so the air exchange suppression gap is reduced.If the coating liquid viscosity is high, the air movement resistance is high, so the air exchange suppression gap must be large. No. Also, the sponge is porous and has a continuous ventilation hole, but the continuous ventilation hole of the sponge is formed in a three-dimensional mesh, and in order to exchange air inside the three-dimensional mesh of the sponge, the air is straight. Instead of moving in a zigzag manner, it moves in a zigzag manner while abutting against and avoiding a fine wall portion, so that it must be formed in a considerably coarse mesh shape. If the sponge is made rough enough to allow air exchange, the capillary action will not work, and the coating liquid will immediately move in the direction of gravity, and will not fulfill the function of the occlusion body (holding function).
[0006]
[Means for Solving the Problems]
The present invention has a coating destination holder in front of a shaft cylinder containing a coating liquid, and comprises a rod-shaped coating destination disposed at the tip of the coating destination holder, and a valve mechanism disposed behind the coating destination holder, In an applicator in which a plurality of vertical ribs are formed on the inner surface of the application destination holder and in contact with the periphery of the application destination, an annular portion that forms a gap between the application target holder and the periphery of the application destination is formed on the vertical ribs of the application destination holder. The gist of the present invention is that the gap is provided as an air exchange suppressing portion.
[0007]
【Example】
1 to 4 show a first embodiment. FIG. 1 is a front vertical sectional view of the applicator, FIG. 2 is a vertical half sectional view of a coating destination holder 4 on which a coating destination 5 is temporarily provided, and FIG. 3 is a top view of FIG. Reference numeral 1 denotes a bottomed cylindrical rear shaft whose front end is open. The interior of the rear shaft 1 is a coating liquid storage chamber, and incorporates a substantially rod-shaped coating liquid stirring body 2 for redispersing the settling pigment when the coating liquid having sedimentation properties such as pigment is filled. are doing. Note that the viscosity of the coating liquid in this embodiment is 35 ± 15 mPa · s or less. The rear shaft 1 is formed of a thermoplastic resin material by a blow molding method. In the present embodiment, the rear shaft 1 is formed so as to be deformable by manually pressing the thickness of the cylindrical portion. Specifically, the material of the rear shaft 1 is a blow grade of 6 nylon, the diameter of the cylinder is 15.40 ± 0.30 mm, and the thickness of the cylinder is 0.70 ± 0.10 mm.
At the opening of the rear shaft 1, a substantially cylindrical front shaft 3 penetrating in the front-rear direction is attached so as to be screwed to the rear shaft 1. The front shaft 3 is formed of a single cylindrical front cylinder portion at the front and a double cylinder outer and inner cylinder portions at the rear. A flat portion is provided from the tip of the inner cylindrical portion toward the axis, and the axis of the flat portion is open. A valve seat portion is provided so as to expand in a funnel shape rearward from the rear end of the opening. At the front opening of the front shaft 3, a substantially cylindrical application destination holder 4 penetrating front and rear is attached so as to protrude from the front end of the front shaft 3.
[0008]
An application destination 5 having an application liquid deriving action is inserted so that a front portion protrudes from the inside of the application destination holder 4. The application destination 5 is formed of a fiber bundle such as polyacrylonitrile fiber, polyester fiber, nylon fiber, rayon fiber, or a molded body of urethane resin, polyester resin, nylon resin, or the like. It is rod-shaped and symmetrical. Note that the outer diameter of the application destination 5 is 2.98 ± 0.05 mm.
[0009]
The application destination holder 4 has a substantially cylindrical shape, and is provided so as to form a funnel shape at a substantially middle position in the front-rear direction, and further to have a cylindrical shape whose diameter is increased rearward. On the inner surface of the application destination holder 4, a vertical rib portion 4a in which four ribs protruding toward the axial center side are radially arranged from the front end toward the rear side is provided so as to be lightly pressed against the outer peripheral surface of the application destination 5. ing. At the rear end of the vertical rib portion 4a, there is provided an annular portion 4b whose diameter is reduced toward the axis to form an inner hole slightly larger than the outer diameter of the application destination 5 and whose axial length is shorter than the inner diameter of the inner hole. Provided. That is, the air exchange suppressing portion 6 is provided, which forms a minute gap between the outer periphery of the application destination 5 and the inner periphery of the annular portion 4b of the application destination holder 4.
Note that the vertical rib portion 4a of the coating destination holder 4 is provided so as to protrude slightly toward the axis from the inner periphery of the annular portion 4b to the rear end of the annular portion 4b. This is because the vertical rib portion 4a of the application destination holder 4 is lightly pressed against the periphery of the application destination 5 so that the air exchange suppressing portion 6 provided around the application destination 5 and the annular portion 4b of the application destination holder 4 The gap is uniform over the entire circumference. That is, the air exchange suppressing portion 6 is prevented from forming an eccentric gap.
[0010]
Further, the application destination 5 may be in line contact with only the vertical rib portion 4a of the application destination holder 4, so that the application destination 5 and the annular portion 4b are not in surface contact. Since the variation of the outer diameter of the application destination 5 is relatively large, the application destination 5 is in line contact with the vertical rib portion 4a of the application destination holder 4 so as to suppress the variation of the contact load. Further, the axial length of the annular portion 4b of the coating destination holder 4 is shorter than that of the inner hole because the space around the vertical rib portion 4a in front of the annular portion 4b is secured so that the coating liquid does not easily pool. -ing
When it is necessary to increase the contact load between the application destination 5 and the application destination holder 4, the application destination 5 and the annular portion 4b of the application destination holder 4 may be pressed in a planar manner. When filling with a low-viscosity coating solution, the lower the viscosity of the coating solution, the easier the air exchange becomes. Therefore, the inscribed diameter of the vertical rib portion 4a of the coating destination holder 4 and the inner diameter of the annular portion 4b are set to be the same. Thus, the gap between the air exchange suppressing portions 6 may be reduced. Incidentally, even if the periphery of the application destination 5 and the annular portion 4b of the application destination holder 4 are in surface contact, the application destination 5 is formed of a large number of fine fibers, and the surface thereof is formed in an uneven shape. The minute concave portion on the surface of the surface 5 serves as a minute gap that forms the air exchange suppressing portion 6. The inner diameter of the annular portion 4b of the coating destination holder 4 is 3.10 ± 0.05 mm, the inscribed diameter of the vertical rib portion 4a is 2.98 ± 0.05 mm, and the dimension of the air exchange suppressing portion 6 is 0. 0.02 to 0.22 mm.
[0011]
A spring valve 7 having both a spring portion having a resilient function and a valve portion which is a component of a valve mechanism is provided inside the inner cylindrical portion of the front shaft 3. The rear end of the spring valve 5 is unevenly connected to the rear end of the inner cylindrical portion of the front shaft 2. The front end of the spring valve 5 is provided with a front cylinder portion having a closed front end, a valve portion having a spherical surface is provided behind the front cylinder portion, and a middle cylinder portion having an enlarged diameter is provided behind the valve portion. The valve portion biased by the spring portion of the spring valve 5 is brought into pressure contact with the valve seat portion of the front shaft 2 to form a valve mechanism that can be opened and closed. Reference numeral 8 is a cap having a clip function. The cap 8 is easily attached to and detached from the front shaft 3. When the cap 8 is not in use, it protects the application destination 5 and prevents drying of the application liquid held by the application destination 5. The shaft 3 is formed so as to be air-sealed.
[0012]
In the present applicator, the front shaft 3 and the application destination holder 4 are shown separately, but as shown in the section of the prior art, the front shaft 3 and the application destination holder 4 are integrated, May be provided separately.
When a coating liquid having low sedimentation properties such as dye is incorporated in the coating device, a coating liquid stirring body may not be used.
[0013]
The operation and effect of the first embodiment will be described. When the application destination 5 of the applicator is repeatedly pressed several times against the paper surface or the like against the spring portion of the spring valve 7, the valve mechanism opens and closes repeatedly, and the application liquid incorporated in the rear shaft causes the valve mechanism section to open and close. It passes and penetrates from the rear end of the application destination to the front. At the same time, the application liquid adheres to the inner surface of the application destination holder and the rear periphery of the air exchange suppressing portion. Further, by repeatedly pressing the application destination against the paper surface or the like, the coating liquid can be sufficiently applied to the front end of the application destination and then applied onto the paper surface or the like.
As another discharge method, there is a method in which the side surface of the rear shaft is pressed while the application destination is pressed against the paper surface or the like. In this method, since the inside of the rear shaft is pressurized by deforming the rear shaft, the coating liquid in the rear shaft can be quickly permeated in front of the application destination. Need not be pressed against the paper. According to this method, since the pressing operation on the paper surface of the application destination is reduced, the deformation of the tip of the application destination can also be reduced. Incidentally, the ease of the deformation of the rear shaft needs to be set to such an extent that it is not deformed by the holding force on the rear shaft when the application destination is pressed against the paper surface or the like. This is to prevent the rear shaft from being pressed and deformed by the force holding the rear shaft in the case where the ejection is performed only by pressing the application destination.
[0014]
Here, after the application liquid is stored behind the application destination 5 and the air exchange suppression unit 6, even if the application destination 5 is pressed against a paper surface or the like to discharge the application liquid, the application liquid is applied to the air exchange suppression unit 6. The liquid becomes liquid-tight, a wall of the coating liquid is formed, and it becomes difficult for air from the outside of the coating destination 5 to pass through the air exchange suppressing unit 6, and as a result, the derivation of the coating liquid from the rear shaft 1 is also suppressed. Because
However, as described above, in a method in which the application liquid is discharged by pressing the side surface of the rear shaft 1 while the application destination 5 is pressed against a paper surface or the like, the air exchange suppression unit 6 is configured to discharge the application liquid. Even in the dense state, the pressure in the rear shaft 1 increases, and a discharge force greater than the suppression force of the air exchange suppression unit 6 acts, so that it may be difficult to suppress the discharge of the coating liquid. is there. Therefore, the method of ejecting the application liquid by pressing the side surface of the rear shaft in a state where the application destination is pressed against the paper surface or the like is a case where a new applicator is purchased and the application liquid is promptly discharged first. This is an effective method. Even when the periphery of the application destination is extremely solidified with the application liquid (for example, when the application liquid is dried and clogged), such as when the cap is forgotten to be fitted, the non-solidified application liquid in the rear shaft is forcibly discharged. By doing so, the solidified coating liquid can be destroyed, and it can be said that this is an effective method for repairing the drying liquid clogging.
[0015]
In the present embodiment, the sponge parts conventionally used are reduced, and the air exchange suppression effect that the pen core and the sponge parts have played is performed by the air exchange suppression part composed of the application part and the annular part of the application destination holder. In addition, since an appropriate gap of the air exchange suppressing portion is set in accordance with the viscosity of the coating solution, conventionally used sponge parts can be reduced, and the cost of parts can be reduced. Also, since the number of sponge parts can be reduced, the number of assembling steps is reduced, and the assembling cost is reduced. Furthermore, since the number of components is reduced, variations due to combinations between components and variations due to an assembling method of each component can be reduced. As a result, the variations can be reduced, and quality is stabilized.
[0016]
5 to 7 show a second embodiment. FIG. 4 is a vertical sectional view of the main part of the applicator, FIG. 6 is a vertical half sectional view of the application holder 14 with a temporary application destination 15 (two-dot chain line in the figure), and FIG. The figure is shown. Since the front shaft 3 and the spring valve 7 have the same configuration as in the first embodiment, their description is omitted. Reference numeral 11 denotes a rear shaft of the first embodiment in which the coating liquid storage chamber is made thicker, and is screwed and connected to the front shaft 3. The material of the rear shaft 1 is a blow grade of polypropylene, the diameter of the cylindrical portion 20 is 20 ± 0.30 mm, and the thickness of the cylindrical portion is 0.75 ± 0.10 mm.
At the front opening of the front shaft 3, a substantially cylindrical coating destination holder 14 that projects from the front end of the front shaft 3 and that penetrates forward and backward is attached. An application destination 15 which is thicker than the application destination 5 of the first embodiment is inserted into the application destination holder 14 so that a front portion can protrude from the inside. The application destination 15 has a so-called chizle-shaped application liquid deriving action in which both side surfaces of the tip are formed in an oblique flared shape. Note that the outer diameter of the application destination 15 is 7.50 ± 0.05 mm.
[0017]
The application destination holder 14 has a substantially cylindrical shape. On the inner surface of the application destination holder 14, six longitudinal rib portions 14 a protruding toward the axial center from the front end toward the rear side are radially arranged, and are lightly pressed against the application destination 15. At the rear end of the vertical rib portion 14a, there is formed an annular portion 14b having a diameter reduced toward the axis and having an inner hole slightly larger than the outer diameter of the application destination 15. That is, the air exchange suppressing portion 16 is provided, which forms a minute gap between the periphery of the application destination 15 and the annular portion 14b of the application destination holder 14. Further, the vertical rib portion 14a of the coating destination holder 14 is provided so as to slightly protrude toward the axial center from the inner periphery of the annular portion 14b to the rear end of the annular portion 14b, as in the first embodiment. I have. The inner diameter of the annular portion 14b of the application holder is 7.60 ± 0.05 mm, the inscribed diameter of the vertical rib portion 14a is 7.50 ± 0.05 mm, and the air exchange suppressing portion 16 is a gap of 0 to 0.20 mm. Is formed.
Reference numeral 18 denotes a cap having a clip function. The cap 18 is substantially the same as the cap 8 of the first embodiment except that the front shape is larger than that of the cap 8 of the first embodiment.
[0018]
The operation and effect of the second embodiment will be described. It is substantially the same as the first embodiment, except that the front end, the spring valve, and the like can be used as a common part even if the application destination 15 is made thick so that a wide handwriting can be obtained, and even if it is formed in a chisel shape. The productivity is improved as compared with the case where the components having different thicknesses are used to separate the other components and are produced in a product form without using the common components.
[0019]
8 and 9 show a third embodiment. FIG. 8 is a vertical half sectional view of the application destination holder 24 in which the application destination 5 of the first embodiment is temporarily provided (two-dot chain line in the figure), and FIG. 9 is a bottom view of FIG. The configuration other than the application destination holder 24 is the same as that of the first embodiment. Further, the outer shape of the application destination holder 24, the vertical rib portion 4a, the annular portion 4b, and the air exchange suppressing portion 6 formed by the periphery of the application destination 5 and the annular portion 4b of the application destination holder 24 are also the same as those described above. This is the same as in the first embodiment. The difference between the present embodiment and the first embodiment lies in the shape of the rear inner surface of the application destination holder 24. Specifically, on the rear inner surface of the annular portion 4b of the application destination holder 24, twelve thin plate-like rear vertical rib portions 24c protruding toward the axial center side are radially formed, and the rear vertical rib portions 24c are formed. A vertical groove 24d for forming a capillary action is formed therebetween. The vertical groove 24d is provided so as to have a coating liquid absorbing function.
[0020]
The operation and effect of the third embodiment will be described. This embodiment is substantially the same as the first embodiment, but in the present embodiment, a vertical groove portion 24d having a capillary action and provided between the rear vertical rib portions 24c of the coating destination holder 24 has a coating liquid absorbing function. . This makes it possible to add an ink retaining function like the sponge parts shown in the prior art. Therefore, after the application liquid is stored behind the application destination 5 and the air exchange suppression unit 6, when the application destination 5 is further pressed against the paper surface to discharge the application liquid, the application by the air exchange suppression unit 6 is performed. In addition to the liquid derivation suppression, the coating liquid occlusion function of the vertical groove 24d further enhances the derivation of the coating liquid.
[0021]
【The invention's effect】
The present invention has a coating destination holder in front of a shaft cylinder containing a coating liquid, a rod-shaped coating destination disposed at the tip of the coating destination holder, and a valve mechanism disposed behind the coating destination holder, In an applicator in which a plurality of vertical ribs that are in contact with the periphery of the application destination are formed on the inner surface of the application destination holder, an annular portion that forms a gap between the periphery of the application destination and the vertical ribs of the application destination holder is provided. Since the air exchange suppression part is provided and the gap is used as an air exchange suppression part, the air exchange suppression effect that the pen core and the sponge part played was made to act by the air exchange suppression part consisting of the annular part of the application destination and the application destination holder, The sponge parts conventionally used can be reduced, and the parts cost and the assembly cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a front vertical sectional view of a first embodiment.
FIG. 2 is a longitudinal sectional view of a coating destination holder in which a coating destination of the first embodiment is temporarily provided.
FIG. 3 is a top view of FIG. 2;
FIG. 4 is an enlarged view of a main part of FIG. 2;
FIG. 5 is a vertical sectional view of a main part of the second embodiment.
FIG. 6 is a longitudinal sectional view of an application destination holder in which an application destination is temporarily provided according to a second embodiment.
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a longitudinal sectional view of an application destination holder in which an application destination is temporarily provided according to a third embodiment.
FIG. 9 is a bottom view of FIG. 8;
[Explanation of symbols]
1, 11 rear shaft 2 coating liquid stirring body 3 front shaft 4, 14, 24 coating destination holder 4a, 14a vertical rib portion 4b, 14b annular portion 24c rear vertical rib portion 24d vertical groove portion 5, 15 coating destination 6, 16 air exchange Suppressor 7 Spring valve 8 Cap
