JP3854483B2

JP3854483B2 - Applicator

Info

Publication number: JP3854483B2
Application number: JP2001314157A
Authority: JP
Inventors: 宣暁小林
Original assignee: Sakura Color Products Corp
Current assignee: Sakura Color Products Corp
Priority date: 2001-10-11
Filing date: 2001-10-11
Publication date: 2006-12-06
Anticipated expiration: 2021-10-11
Also published as: JP2003118290A

Description

【０００１】
【発明の属する技術分野】
本発明はマーカペンやボールペンをはじめとする塗布具に関するものであり、特に通常の使用時には、塗布液を内蔵する本体筒に装着された栓部材が外れず、前記塗布液の充填・交換時には、前記栓部材が容易に取り外せる塗布具に関するものである。
【０００２】
【従来の技術】
従来より一般に用いられているマーカペンやボールペンなどの塗布具１００は、図１１に示すように円筒形で中空の本体筒１０１を有し、その内部に塗布液１０２が内蔵されている。また本体筒１０１の先端に先栓１０４が取り付けられ、後端部には尾栓１０３が装着されて一体化されている。
前記した先栓１０４や尾栓１０３等の栓部材は、本体筒１０１から抜け落ちると当該本体筒１０１に内蔵された塗布液１０２が漏出する場合もあり、また抜け落ちた栓部材１０３，１０４を幼児や子供が誤って飲み込むと窒息してしまう事故の要因になりかねないため、先栓１０４や尾栓等の栓部材は強固に本体筒１０１に取り付けられる必要がある。よって、従来の塗布具１００は、本体筒１０１と栓部材１０３，１０４を接着剤で接着したり、前記本体筒１０１および前記栓部材１０３，１０４に嵌合構造１０５を設け、両者を嵌合するなどして、本体筒１０１と栓部材１０３，１０４が強固に固定されていた。
【０００３】
【発明が解決しようとする課題】
従来のマーカペンやボールペンなどの塗布具１００は、本体筒１０１に内蔵された塗布液１０２を使い切ると大半が破棄される。しかし、前記塗布具１００の多くは、本体筒１０１をはじめとする多岐にわたる構成部材が再利用可能でり、資源の有効利用の観点からこれらの再利用が望まれている。そこで、この要望に応えるため、塗布具１００の本体筒１０１に内蔵された塗布液１０２を充填・交換する、環境に調和した塗布具１００が切望されている。
【０００４】
旧来より一般的に用いられている塗布具１００は、本体筒１０１と栓部材１０３，１０４を接着剤や、嵌合構造１０５により固定するタイプのものであるため、組み立てが容易であり、大量生産を行うには都合の良い構造である。しかし、従来の塗布具１００は、本体筒１０１と栓部材１０３，１０４が接着剤や嵌合構造１０５により強固に固定されているため、本体筒１０１から栓部材１０３，１０４を容易に取り外せず、本体筒１０１に内蔵される塗布液１０２の充填・交換が困難であるという問題があった。
【０００５】
また、塗布具１００の本体筒１０１と栓部材１０３，１０４にねじ構造を設け、栓部材１０３，１０４を本体筒１０１に装着する構造にすれば、本体筒１０１に内蔵される塗布液１０２の充填・交換が比較的容易に行えるが、前記塗布具１００は製造時に栓部材１０３，１０４を本体筒１０１にねじ込む必要があり、大量生産に不向きであり、コストも高くつくという問題がある。
【０００６】
そこで本発明においては、塗布具の使用時においては当該塗布具の本体筒から栓部材が外れず、さらに塗布液の充填・交換時には前記栓部材を前記本体軸から容易に取り外し可能であり、製造が容易な塗布具の提供を課題とした。
【０００７】
【課題を解決するための手段】
そこで上記した課題を解決すべく提供される請求項１に記載の発明は、塗布液が収納される本体筒と、先栓又は尾栓の少なくともいずれかの栓部材を有し、前記本体筒に栓部材が装着され、さらに栓部材を本体筒に装着した状態を維持する装着維持構造部が設けられた塗布具において、本体筒又は栓部材の少なくともいずれかに傾斜部が設けられ、他方には当該傾斜部と係合する係合部が設けられ、前記栓部材を本体筒に対して捻ることにより、前記栓部材が軸方向に押し出されることを特徴とする塗布具である。
【０００８】
本発明の塗布具に設けられる装着維持構造部は、本体筒への栓部材の装着状態を維持するものであり、前記塗布具の使用中に栓部材が本体筒から脱落するのを防止できる。
【０００９】
本発明の塗布具においては、栓部材を本体筒に対して捻ると、前記本体部又は前記栓部材の少なくともいずれかに設けられた傾斜部が、前記他方に設けられ前記傾斜部と係合している係合部を軸方向に押圧し、その結果栓部材が軸方向に押し出される。本発明の塗布具では、上記のように前記塗布具は栓部材を本体筒に対して捻るだけで本体筒から栓部材を取り外せるため、本体筒内への塗布液の充填・交換が容易に行える。一方、本発明の塗布具は装着維持構造部を有するため、前記塗布具の使用時は、本体筒と栓部材が外れず、両者が一体化された状態が維持される。
【００１０】
請求項２に記載の発明は、本体筒の中にさらに内筒が設けられ、塗布液は前記内筒に収容されて本体筒に収納されていることを特徴とする請求項１に記載の塗布具である。
【００１１】
本発明の塗布具においては塗布液は本体筒の内部に別途設けられた内筒に収容されている。よって、塗布液の充填・交換は、前記内筒を前記本体筒から取り出して塗布液を充填するか、前記本体筒に内蔵されている内筒を塗布液を充分含んだ別途の内筒と交換するだけで塗布液の再充填を行うことができる。また内筒内に塗布液を滴下する構成を採用することも可能である。
【００１２】
請求項３に記載の発明は、塗布具は、マーカペン又はボールペンであることを特徴とする請求項１又は２に記載の塗布具である。
【００１３】
請求項１又は２に記載の発明は、上記した構造を有する塗布具であればいかなるものであっても良いが、特にマーカペン又はボールペンが好適である。
【００１４】
請求項４に記載の発明は、装着維持構造部は、本体筒又は栓部材の少なくともいずれか一方の内周又は外周に設けられた突起と、他方に設けられた前記突起と係合する突起係合部によって構成されることを特徴とする請求項１乃至３のいずれかに記載の塗布具である。
【００１５】
装着維持構造部は前記突起と、前記突起と係合する突起係合部によって構成され、前記突起と前記突起係合部を係合することで前記本体筒に前記栓部材が強固に装着される。また本発明の装着維持構造部は構成が簡単であるため、本発明の塗布具は製造が容易である。
【００１６】
請求項５に記載の発明は、装着維持構造部は、本体筒又は栓部材の少なくともいずれか一方の全周に設けられた環状の突起と、本体筒又は栓部材の他方に設けられた前記突起と係合する突起又は凹部によって構成されることを特徴とする請求項１乃至４のいずれかに記載の塗布具である。
【００１７】
本発明の装着維持構造部によれば、前記本体筒の前記栓部材への装着が強固となる。また前記装着維持構造部は構造が簡単であるため、製造が容易であり、製造コストの低減が可能である。
【００１８】
請求項６に記載の発明は、装着維持構造部は、本体筒又は栓部材の少なくともいずれか一方の全周に設けられた環状の突起と、本体筒又は栓部材の他方に設けられた前記突起と係合する環状の突起によって構成されることを特徴とする請求項１乃至４のいずれかに記載の塗布具である。
【００１９】
かかる構成によれば、前記栓部材に前記本体筒を容易に装着できる。また、前記栓部材と前記本体筒とが全周にわたって係合するため、通常使用時には、前記栓部材は前記本体筒から容易に外れない。また前記装着維持構造部は、構造が簡単であり、製造が容易であるため、製造コストの低減が可能である。
【００２０】
請求項７に記載の発明は、外周部の一部又は全部が本体筒の内面を押圧した状態で本体筒に挿入され、当該押圧部分が装着維持構造部として機能することを特徴とする請求項１乃至６のいずれかに記載の塗布具である。
【００２１】
本発明の装着維持構造部によれば、極めて簡単な構造によって栓部材を本体筒に装着した状態を維持することができる。
【００２２】
請求項８に記載の発明は、装着維持構造部は本体筒と栓部材とが互いに係合する係合部を有し、本体筒と栓部材は一定の係合長さに渡って係合し、傾斜部の軸方向の長さは前記係合長さよりも長く、栓部材が軸方向に押し出されることによって係合部の係合が解除されることを特徴とする請求項１乃至７のいずれかに記載の塗布具である。
【００２３】
本発明の塗布具では、装着維持構造部は本体筒と栓部材とが互いに係合する係合部を備える。そのため本発明の装着維持構造部によれば、栓部材と本体筒との結合が強固となる。
加えて本発明の塗布具では、傾斜部の軸方向の長さは前記係合長さよりも長く、栓部材が軸方向に押し出されることによって係合部の係合が解除される。そのため本発明の塗布具は、簡単に係合部を解除することができる。
【００２４】
請求項９に記載の発明は、傾斜部は波形であることを特徴とする請求項１乃至８のいずれかに記載の塗布具である。
【００２５】
本発明の塗布具において、本体部又は栓部材の少なくともいずれかに設けられた傾斜部は波形であるため、栓部材の本体筒に対する回転が円滑に行える。また、栓部材を本体筒に対して捻ると、前記傾斜部は当該傾斜部と係合する係合部により軸方向に押し出されるため、容易に栓部材を本体筒から取り外せる。さらに、傾斜部が波形であるため、当該傾斜部に係合する係合部の軸方向の変位量が急激に変化せず、栓部材と本体筒の分離は緩やかである。
なお、前記係合部は波形のものや突起状のものなど、いかなる形状であっても良い。
【００２６】
請求項１０に記載の発明は、本体筒の端部近傍に内径が狭められた狭窄部が設けられ、当該狭窄部の本体軸端部側に面した部位に傾斜部が設けられていることを特徴とする請求項１乃至９のいずれかに記載の塗布具である。
【００２７】
本発明の塗布具においては、本体筒の狭窄部の本体軸端部側に面した部位に傾斜部が設けられており、前記本体筒に装着される栓部材に係合部が設けられている。よって、前記栓部材を本体筒に対して回転すれば、前記栓部材が軸方向に押し出され、前記栓部材を本体筒から容易に取り外すことができる。なお、前記係合部は波形をはじめ、突起等いかなる形状であっても良い。
【００２８】
請求項１１に記載の発明は、栓部材は尾栓であり、当該栓部材は本体筒内に挿入される挿入部と本体筒から露出する露出部を有し、露出部は挿入部よりも大径であり、傾斜部は本体筒の端面又は露出部の挿入部側端面にあり、他方には当該傾斜部と係合する係合部が設けられていることを特徴とする請求項１乃至１０のいずれかに記載の塗布具である。
【００２９】
本発明の塗布具は、本体筒の端面に傾斜部又は係合部を設けた構成である。すなわち本発明の塗布具では、栓部材の露出部の挿入部側端面と本体筒の端面が係合し、栓部材が軸方向に押し出される
【００３０】
また請求項１２に記載の発明は、栓部材が本体筒の正規の位置に装着された状態から捻られた時、傾斜部と係合部の係合によって生じる軸方向の移動量は、小さい状態から次第に大きい状態に変化することを特徴とする請求項１乃至１１のいずれかに記載の塗布具である。
【００３１】
本発明の塗布具では、傾斜部と係合部の係合によって生じる軸方向の移動量が、小さい状態から次第に大きい状態に変化する。逆に回動当初の推力は大きい。したがって何らかの理由によって栓部材が固着している場合であっても、栓部材を回転することによって栓部材を簡単に取り外すことができる。
【００３２】
請求項１３に記載の発明は、栓部材には道具が係合する道具係合部が設けられていることを特徴とする請求項１乃至１２のいずれかに記載の塗布具である。
【００３３】
本発明の塗布具において、栓部材に道具係合部が設けられているため、前記栓部材は前記道具係合部に工具などを係合し捻ることで容易に本体筒から取り外せる。なお、ここで道具係合部とは、ドライバーなどの工具や硬貨などが係合可能な凹部や、前記栓部材の端部から突出した凸部などいかなる形状を有しても良い。
【００３４】
請求項１４に記載の発明は、栓部材と本体筒とは異なる材質で作成されていることを特徴とする請求項１乃至１３のいずれかに記載の塗布具である。
【００３５】
かかる構成によれば、長期にわたり栓部材を本体筒に装着しておいても、栓部材と本体筒との癒着が生じず摺動性に優れる。よって、本発明の塗布具は、栓部材を本体筒に対してスムーズに回転できるため、栓部材の取り外しに大きな力を要しない。
【００３６】
【発明の実施の形態】
上記した先栓は、本体筒の一端に取り付けられる栓部材であり、略中心部に本体筒に内蔵する塗布液を導出するため軸方向に貫通孔が設けられている。そして多くの場合、先栓によってペン先チップが保持される。
また、尾栓は本体筒の前記他端に取り付けられ、当該本体筒を封止する栓部材であり、前記本体筒に内蔵される塗布液等の漏出を防止する等の理由から取り付けられるものである。
【００３７】
本発明の塗布具の本体筒と、先栓および尾栓はポリプロピレン（ＰＰ）樹脂、ポリエチレン（ＰＥ）樹脂、ポリアセタール（ＰＯＭ）樹脂、ポリエチレンテレフタレート（ＰＥＴ）樹脂、ポリブチレンテレフタレート（ＰＢＴ）樹脂、ポリカーボネート（ＰＣ）樹脂、ポリメチルメタアクリル（ＰＭＭＡ）樹脂等のアクリル系樹脂、アクリロニトリルブタジエンスチレン（ＡＢＳ）樹脂やアクリロニトリルスチレン（ＡＳ）樹脂やポリスチレン（ＰＳ）樹脂等のスチレン系樹脂等の樹脂を射出成形したものであるが、これに限らず金属を切削加工したものなど、材料、製法はいかなるものであっても良い。ただし、水やアルコールなどのインキの溶媒等の透過性を低減したい場合は、ポリプロピレン（ＰＰ）樹脂やポリエチレン（ＰＥ）樹脂が、本発明の塗布具の本体筒および栓部材の材質として好適である。また、本体筒側又は栓部材側のいずれか一方に、ポリアセタール樹脂やフッ素系樹脂、ナイロン、高密度ポリエチレン樹脂（ＨＤＰＥ）等の摺動性に優れた樹脂を採用してもよい。もちろん本体筒側と栓部材側の双方にこれら摺動性に優れた樹脂を採用してもよい。
さらに、本体筒の材質と、尾栓や先栓等の栓部材の材質を異なる材質とすると、本体筒と栓部材との癒着が生じず、摺動性に優れる。よって、かかる構成によれば、栓部材を本体筒に対してスムーズに回転できるため、栓部材の取り外しに大きな力を作用させる必要がない。
また、上記塗布具の本体筒に内蔵される塗布液は水性インキや、油性インキをはじめとしていかなる塗布液であっても良い。なお、先栓の中心には軸方向に前記本体筒に内蔵される塗布液を導出するための貫通孔が設けられている。
【００３８】
また、傾斜部は、前記本体筒又は栓部材の軸方向に対して傾斜した部分であり、本体筒および栓部材のいかなる場所に設けられても良い。なお、傾斜部は正面視が直線形や、波形等いかなる形状であっても良い。一方、係合部は本体筒に栓部材が装着された状態において、前記傾斜部と係合可能なものである。なお、前記係合部は正面視が直線形や波形等、前記傾斜部と係合可能な形状であればいかなる形状であっても良い。
【００３９】
傾斜部又は係合部の形状として推奨されるのは、緩い傾斜の部分ときつい傾斜の部分を有する構成である。例えば図１０（ａ）に示す傾斜部のように底部Ａを有し、その両端に曲線状の斜面Ｂを有し、さらに急斜面Ｃに繋がる構成が推奨される。
すなわち傾斜部が水平状の底部Ａと水平状の上辺部Ｄを持つ場合であれば、底部Ａと上辺部Ｄの間に直線状の急斜面Ｃがあり、底部Ａと直線状の急斜面Ｃの間に緩和曲線的なカーブを持つ斜面Ｂを備える。
そして緩和曲線的なカーブを持つ斜面Ｂによって底部Ａと斜面Ｂがなだらかに繋げられる。緩和曲線的な斜面Ｂのカーブとしては、円弧面状、放物線、正弦曲線、楕円等のものが採用可能である。
また図１０（ｂ）に示す傾斜部のように底部Ａを有し、その両端に直線状の緩斜面Ｂを有し、さらに急斜面Ｃに繋がる構成も推奨される。
【００４０】
そして対する係合部は、図１０（ａ）、図１０（ｂ）のように、栓部材が本体筒の正規の位置に装着されている時には、傾斜部のように底部Ａの位置にある。そして栓部材を捻って回転させると、係合部は緩斜面Ｂと接する。そのため傾斜部と係合部の係合によって生じる軸方向の移動量が小さい。そのため逆に回転開始時における軸方向の推力が大きい。したがって何らかの理由によって栓部材が固着していても、栓部材を容易に移動させることができる。
【００４１】
図１０に示すような傾斜部を採用すると、栓部材が本体筒の正規の位置に装着された状態から捻られた時、傾斜部と係合部の係合によって生じる軸方向の移動量は、小さい状態から次第に大きい状態に変化することとなる。
【００４２】
【実施例】
以下、本発明の実施例について説明する。
図１は本発明の第１実施例の塗布具１（マーカペン）を示す図であり、（ａ）は塗布具１の斜視図、（ｂ）は塗布具１の尾栓３側の分解断面図、（ｃ）は尾栓３の斜視図である。
塗布具１は本体筒４の一端に先栓２が取り付けられ、他端側に尾栓３が取り付けられたものである。また、先栓２の中心には軸方向に延伸した貫通孔５が設けられており、当該貫通孔５の内部にはフェルト製の塗布部たるペン先チップ６が取り付けられている。
【００４３】
尾栓３は本体筒４の外径と略同一の径を有する封止部７が尾栓本体部８の片端に設けられており、当該尾栓本体部８の外周部には環状の係止部９がある。係止部９は、内周に設けられたリブであり、内周面から突出している。
尾栓本体部８は、本体筒４に挿入される部分であり、封止部７は、本体筒４から露出する部分である。
封止部７は、尾栓本体部８よりも径が大きい。そして封止部７の頂面には、封止部７の中心を通過し封止部７の円周上の２点を結ぶ直線状の窪みにより道具係合部１０が形成されている。また、尾栓本体部８の他端の端面には傾斜した波形の係合部１１があり、係合部１１は軸方向に突出した山部１１ａと、前記山部と逆方向に突出した谷部１１ｂが交互に組み合わさった構成である。
【００４４】
一方、本体筒４は両端が開口した円筒であり、一方の端部の内周には、環状の凹部であり尾栓３の係止部９が係合可能な対係止部１２がある。前記係止部９と前記対係止部１２により、尾栓３が本体筒４に装着された状態を維持する装着維持構造部１３が構成される。
【００４５】
また本実施例では、尾栓本体部８の他の部分についても装着維持構造部として機能している。すなわち尾栓本体部８の外径（係止部９を除く）は、本体筒４の内径に比べて僅かに大きく、尾栓本体部８が本体筒４に内蔵された状態においては、尾栓本体部８が本体筒４の内面を押圧した状態となる。そのため尾栓本体部８の押圧力によっても尾栓３が本体筒に装着された状態が維持される。なお本実施形態では、尾栓本体部８の係止部９及びその他の部分が装着維持構造部１３を構成しているが、係止部９だけによって尾栓３の抜け止め構成としてもよく、逆に係止部９を略して尾栓本体部８の押圧力だけによって尾栓３の抜け止め構成としてもよい。
【００４６】
本実施例で採用する対係止部１２たる環状の凹部の幅Ｌは、係合部１１たる尾栓３の山部１１ａ及び谷部１１ｂの高低差Ｘよりも小さい。すなわち環状の凹部の幅Ｌは、傾斜部の軸方向の長さＸよりも短い。
【００４７】
また、本体筒４の対係止部１２側の端部近傍には内径が狭められた狭窄部１４が形成されており、狭窄部１４の本体軸端部側に面した部分には傾斜した波形の傾斜部１５が設けられている。すなわち、傾斜部１５は対係止部１２側に突出した突出部１５ａと、前記突出部１５ａと逆方向に突出した窪部１５ｂが交互に組み合わさった構成である。本実施例における尾栓３および本体筒４は樹脂を成形したものであるが、金属を切削加工したものなど、材質はいかなるものであっても良い。また、封止部７の径はいかなる大きさであっても良いが、本体筒４の外径あるいは内径と略同一であることが望ましい。
さらに、本体筒４の内部には本体筒４の内径より小さく円筒形で、内部に塗布液が保持された内筒１６が配置されている。すなわち内筒の内部には中綿と称される液吸収部材が内蔵されており、当該中綿にインキ等の塗布液がしみ込んでいる。
【００４８】
通常、塗布具１は尾栓３が本体筒４に装着された状態で使用される。すなわち、尾栓３は本体筒４の対係止部１２側の端部から尾栓本体部８を封止部７が本体筒４に当接する位置まで挿入されており、係止部９が対係止部１２に係止されることで尾栓３が本体筒４に取り付けられている。
本実施例では、前記したように尾栓本体部８が本体筒４の内面を押圧することによっても抜け止めがなされているが、対引き抜きに対する力の大部分は、係止部９と対係止部１２の係合力に頼っている。
すなわち尾栓３が本体筒４に取り付けられた状態においては、尾栓３側の係止部９と、本体筒４側の対係止部１２が互いに係合して栓部材３の抜け止めが成されている。具体的には、係止部９たる環状のリブ突起が対係止部１２たる環状の凹部と係合する。したがって尾栓３側の係止部９と、本体筒４側の対係止部１２との係合長さは、対係止部１２たる環状の凹部の溝幅Ｌと等しい。
なおこの時、尾栓３の係合部１１は本体筒４の傾斜部１５と係合している。
【００４９】
尾栓３を本体筒４の軸方向に引き抜こうとすると、前記係止部９が対係止部１２に強固に係合しているため、軸方向に相当大きな引っ張り力を要する。しかし、尾栓３を本体筒４に対して捻ると、容易に本体筒４から外れる。
【００５０】
すなわち尾栓３を本体筒４に対して捻ると、尾栓本体部８の端部に設けられた波形の係合部１１が、当該係合部１１と係合している波形の傾斜部１５に対して回転する。当該回転に伴い、係合部１１の山部１１ａに、傾斜部１５の突出部１５ａが当接しながら回転し、尾栓３と本体筒４の間には軸方向に反発力が生じ、尾栓３の回転に伴い徐々に当該反発力が強くなる。尾栓３は、係止部９が対係止部１２に係止し発生する係止力により、本体筒４に強固に固定されているが、尾栓３の回転を進めると、やがて軸方向の反発力が増大し、やがて当該反発力が前記係止力より大きくなると、本体筒４が軸方向に押し出され尾栓３が本体筒４から外れる。
【００５１】
また特に本実施例では、図１のように尾栓３を本体軸４内に留め置く機能を果たす対係止部１２（環状の凹部）の幅Ｌよりも、尾栓３の軸方向移動量となる傾斜部１５の高低差Ｘ（傾斜部の軸方向の長さ）の方が長いから、尾栓３を捻ることによって生じる尾栓３の移動量は、係止部９と対係止部１２の係合長さを越えている。そのため尾栓３を捻ると、係止部９は確実に対係止部１２から外れる。
【００５２】
塗布具１に用いられる尾栓３の封止部７の表面には、道具係合部１２が設けられているため、道具係合部１２にドライバーなどの工具や、硬貨などを係合すればより容易に回転できる。塗布具１は通常使用時は尾栓３が本体筒４に強固に取り付けられており、容易に外れないものの、尾栓３を本体筒４に対して回転すれば、容易に本体筒４から尾栓３を取り外せるため、本体筒４内に容易に塗布液を充填・交換できる。また、尾栓３は本体筒４の端部に押し込むだけで一体化できるため、塗布具１の製造が容易である。
【００５３】
尾栓３の封止部７の表面に設けられる道具係合部１０は、上記した直線状の窪み形状に限定されるものではなく、図２に示すような十文字型の窪みなど、いかなる形状のものであってもよいが硬貨やドライバー等の工具などの道具が係合しやすい形状であることが望ましい。また、道具係合部１０は、図３に示すように、封止部７の円周上の２点を結ぶ直線状に突出した凸部であっても良い。また、当該凸部の形状は直線に限らず、図４に示す十文字型などいかなる形状であっても良い。さらに、道具係合部１０は、図５に示すように封止部７の側面に多数設けられた凹部であってもよい。なお、封止部７の側面に設けられた道具係合部１０の凹凸および形状はいかなるものであっても良い。
【００５４】
また、尾栓３に設けられる係合部１１は、本実施例においては正面視が波形であるが、係合部１１はこれに限らず正面視が傾斜を有する直線形のものや、突起など、いかなる形状であっても良い。
一方、本実施例の本体筒４に設けられる傾斜部１５は波形の形状を有するが、傾斜部１５についても前記尾栓３と同様に波形に限定されず、正面視が傾斜を有する直線形のものや、突起など、いかなる形状であっても良い。
【００５５】
また、塗布具１においては、係止部９および対係止部１２により構成される装着維持構造部１３により尾栓３が本体筒４に固定されるが、装着維持構造部１３は上記した構造に限定されるものではない。すなわち、装着維持構造部１３は尾栓３の尾栓本体部８の外周に設けられた凹部と、本体筒４の内周に設けられた前記凹部に係合する突起により構成されても良い。また、装着維持構造部１３は尾栓３の尾栓本体部８の外周および本体筒４の内周に突起が設けられ、両者が係合するものであっても良い。
【００５６】
以下、本発明の第２実施例について説明する。本実施例の塗布具２０は前記した塗布具１とほぼ同様の構造を有するため、同一の部分については同一の符号を付し、詳細の説明については省略する。
図６は本実施例の塗布具２０の尾栓３側の破断斜視図である。本実施例の塗布具２０においては、尾栓３に設けられる係合部１１および本体筒の内部に設けられる傾斜部１５の位置が前記した塗布具１と異なる。すなわち、係合部１１は尾栓本体部８の軸方向の中間部に設けられ、傾斜部１５は本体筒４の前記係合部１１と係合可能な位置に設けられる。
【００５７】
本体筒４の対係止部１２側の端部から尾栓本体部８が挿入され、係止部９を対係止部１２に係止することで、尾栓３が本体筒４に取り付けられている。なお、通常は尾栓３の係合部１１が本体筒４の傾斜部１５に係合している。
【００５８】
一方、尾栓３を本体軸４に対して捻ると、尾栓本体部８の軸方向中間部に設けられた波形の係合部１１が、当該係合部１１と係合している波形の傾斜部１５に対して回転する。この時、当該回転に伴い係合部１１の山部１１ａに、傾斜部１５の突出部１５ａが当接しながら移動し、尾栓３と本体筒４の間に反発力が生じ、尾栓３の回転の進行に伴い当該反発力が増大する。尾栓３は、係止部９が対係止部１２に係止し発生する係止力により、本体筒４に強固に固定されているが、尾栓３の回転に伴い、やがて前記反発力が前記係止力より大きくなり、本体筒４が軸方向に押し出され尾栓３が本体筒４から外れる。
【００５９】
本実施例の塗布具２０においては、係合部１１および傾斜部１５はいずれも正面視が波形であるが、係合部１１および傾斜部１５は正面視が直線のもの等、いかなる形状を有するものであっても良い。また、図７に示すように、係合部１１および傾斜部１５はそれぞれ、尾栓本体部８の外周および本体筒４の内周に設けられた突起であっても良い。
【００６０】
尾栓３には塗布具１と同様の道具係合部１２が設けられているため、道具係合部１２にドライバーなどの工具や、硬貨などを係合すればより容易に回転できる。よって、塗布具２０は通常使用時は尾栓３が本体筒４に強固に取り付けられており、容易に外れない。一方、塗布具２０は尾栓３を本体筒４に対して回転すれば、容易に本体筒４から尾栓３を容易に取り外せ、本体筒４内部への塗布液の補充が可能である。なお、尾栓３に設けられる道具係合部１０は、前記第１実施例の塗布具１と同様にいかなる形状を有しても良い。
【００６１】
図８は本発明の第３実施例の塗布具３０の尾栓３近傍の破断斜視図である。なお、本実施例の塗布具３０についても、前記した塗布具１，２０と同様の構造であるため、共通する部分については同一の符号を付し、詳細に亘る説明については省略する。
本実施例の塗布具３０においては塗布具１，２０と異なり、係合部１１が尾栓３の封止部７の裏面の設けられている。
封止部７は、前記したように本体筒４から露出する部分であり、尾栓本体部８よりも径が大きい。そして本実施例の塗布具３０では、係合部１１は尾線３の露出部部分の挿入部側端面にある。一方、傾斜部１５は、本体筒４の開口端に設けられている。
【００６２】
塗布具３０は尾栓３を本体筒４の対係止部１２側の端部から尾栓本体部８が挿入され、係止部９を対係止部１２に係止することにより、本体筒４に取り付けられている。なお、通常は尾栓３の係合部１１が本体筒４の傾斜部１５に係合している。
【００６３】
一方、尾栓３を本体筒４に対して回転すると、容易に尾栓３が本体筒４から外れる。これは係合部１１が、傾斜部１５に対して回転することにより、係合部１１の山部１１ａに、傾斜部１５の突出部１５ａが当接しながら移動し、尾栓３と本体筒４の間に反発力が生じ、当該反発力により本体筒４が軸方向に押し出されるためである。
【００６４】
尾栓３は塗布具１と同様の道具係合部１２が設けられているため、道具係合部１２にドライバーなどの工具や、硬貨などを係合すれば容易に回転できる。よって、塗布具３０は通常使用時は装着維持構造部の作用により尾栓３が本体筒４から容易に外れないものの、尾栓３を本体筒４に対して回転すれば、容易に本体筒４から尾栓３を取り外せる塗布具である。よって本実施例の塗布具３０は本体筒４内部への塗布液の充填・交換が容易に行える。なお、尾栓３に設けられる道具係合部１０は、前記第１実施例の塗布具１と同様にいかなる形状を有しても良い。
【００６５】
続いて本発明の第４実施例の塗布具４０について説明する。
図９は塗布具４０の先栓２側の分解断面図である。先栓２は先端部４１と、装着部４２と、当接部４３により構成される。先端部４１は略円錐形の形状であり先端に向かうに従い断面積が減少する。また、先端部４１には貫通孔５が設けられており、当該貫通孔５の内部には、軸方向に貫通してフェルト製の塗布部たるペン先チップ６が取り付けられている。また、装着部４２の外周には、環状の凹部である対係止部４４があり、装着部４２の端部には、軸方向に突出した山部４５ａと、前記山部と逆方向に突出した谷部４５ｂが交互に組み合わさり波形となった係合部４５が設けられている。なお、係合部４５は波形の傾斜に限らず、軸方向に傾斜していれば、いかなる形状を有するものであっても良い。
【００６６】
一方、本体筒４は両端が開口した円筒であり、先栓２側の内周には、環状に突出した係止部４６がある。前記係止部４６と前記対係止部４４は互いに係止可能であり、両者により装着維持構造部４７が構成される。また、本体筒４端部近傍には、本体筒４の内径が狭められ狭窄部４８が形成されており、当該狭窄部４８の本体軸端部側に面した部分には、傾斜した波形の傾斜部４９が設けられている。なお、傾斜部４９は軸方向に突出した突出部４９ａと、前記突出部４９ａと逆方向に突出した窪部４９ｂを交互に組み合わせることにより波形に形成されている。さらに、本体筒４の内部には本体筒４の内径より小さい円筒形で、内部に塗布液が保持された内筒５０が配置されており、当該内筒５０の端部には、前記塗布部６の端部が差し込まれている。
【００６７】
塗布具４０は本体筒４の係止部４６側の端部に先栓２を装着部４２側から挿入されている。また、塗布具４０は先栓２の当接部４３が本体筒４の端部に当接しており、塗布部６の端部が内筒５０内に装着されている。また、先栓２の係合部４５に本体筒４の傾斜部４９が係合している。塗布具４０は先栓２の対係止部４４に本体筒の係止部４６が強固に係止しており、特に軸方向の強度が強い。
【００６８】
また、塗布具４０において先栓２を本体筒４に対して捻ると、それに連動して係合部４５の山部４５ａが傾斜部４９の突出部４９ａに当接しながら移動し、先栓２と本体筒４の間に反発力が生じる。さらに先栓２を捻ると、先栓２の回転の進行に伴い前記反発力が増大し、やがて当該反発力が対係止部４４と係止部４６による係止力より強くなり、本体筒４が軸方向に押し出され先栓２が本体筒４から外れる
【００６９】
よって、塗布具４０に内蔵された内筒５０への塗布液の補充あるいは内筒５０の交換を行う際には、本体筒４を封止している先栓２を捻るだけで先栓２を取り外すことができ、手軽に塗布液の補充あるいは内筒５０の交換を行える。
【００７０】
上記第１乃至第４実施例は、マーカペンに関するものであるが、塗布具１，２０，３０，４０はいずれもマーカペンに限定されるものではなく、ボールペンをはじめとしたあらゆる塗布具に適用できる。
【００７１】
【発明の効果】
本発明の塗布具は、装着維持構造部を有するため、栓部材と本体筒は強固に固定される。また、栓部材は本体筒に対して捻ると容易に取り外せるため、当該本体筒内部への塗布液の充填・交換が可能である。また、塗布液を内筒に収容し、当該内筒を本体筒の内部に収納すると、塗布液の充填・交換が容易に行える。さらに、本発明の塗布具においては装着維持構造部が、突起や凹部等の簡単な構造により構成されるため、製造が容易である。
【図面の簡単な説明】
【図１】本発明の第１実施例の塗布具を示す図であり、（ａ）は塗布具の斜視図、（ｂ）は塗布具の尾栓側の分解断面図、（ｃ）は尾栓の斜視図である。
【図２】本発明の第１実施例の塗布具の尾栓の変形実施例を示す斜視図である。
【図３】本発明の第１実施例の塗布具の尾栓の別の変形実施例を示す斜視図である。
【図４】本発明の第１実施例の塗布具の尾栓のさらに別の変形実施例を示す斜視図である。
【図５】本発明の第１実施例の塗布具の尾栓のさらに別の変形実施例を示す斜視図である。
【図６】本発明の第２実施例の塗布具の尾栓近傍の破断斜視図である。
【図７】本発明の第２実施例の塗布具の、尾栓および本体筒の変形実施例を示す破断斜視図である。
【図８】本発明の第３実施例の塗布具の尾栓近傍の破断斜視図である。
【図９】本発明の第４実施例の塗布具の尾栓近傍の破断斜視図である。
【図１０】傾斜部及び係合部の例を示す説明図である。
【図１１】従来の塗布具を示す斜視図である。
【符号の説明】
１，２０，３０，４０，１００塗布具
２先栓
３尾栓
４，１０１本体筒
９，４６係止部
１０道具係合部
１１，４５係合部
１２，４４対係止部
１３，４７装着維持構造部
１４，４８狭窄部
１５，４９傾斜部
１６，５０内筒[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an applicator including a marker pen and a ballpoint pen, and in particular during normal use, the plug member attached to the main body cylinder containing the coating liquid does not come off, and at the time of filling and replacing the coating liquid, The present invention relates to an applicator in which a plug member can be easily removed.
[0002]
[Prior art]
Conventionally used applicators 100 such as marker pens and ballpoint pens as shown in FIG. 11 have a cylindrical and hollow main body cylinder 101 as shown in FIG. 11, and a coating liquid 102 is incorporated therein. Further, a front plug 104 is attached to the front end of the main body cylinder 101, and a tail plug 103 is attached to the rear end portion so as to be integrated.
When the plug member such as the tip plug 104 or the tail plug 103 falls off from the main body cylinder 101, the coating liquid 102 built in the main body cylinder 101 may leak out. If the child accidentally swallows it, it may cause an accident that suffocates, so the plug member such as the tip plug 104 or the tail plug needs to be firmly attached to the main body cylinder 101. Therefore, in the conventional applicator 100, the main body cylinder 101 and the plug members 103, 104 are bonded with an adhesive, or the main body cylinder 101 and the plug members 103, 104 are provided with a fitting structure 105 to fit both. For example, the main body cylinder 101 and the plug members 103 and 104 are firmly fixed.
[0003]
[Problems to be solved by the invention]
Most applicators 100 such as conventional marker pens and ballpoint pens are discarded when the application liquid 102 built in the main body cylinder 101 is used up. However, in many of the applicators 100, a wide variety of components including the main body cylinder 101 can be reused, and these are desired to be reused from the viewpoint of effective use of resources. Therefore, in order to meet this demand, an applicator 100 that is in harmony with the environment and that fills and replaces the application liquid 102 contained in the main body cylinder 101 of the applicator 100 is desired.
[0004]
The applicator 100 generally used from the past is of a type in which the main body cylinder 101 and the plug members 103 and 104 are fixed by an adhesive or a fitting structure 105, so that assembly is easy and mass production is possible. This is a convenient structure to do. However, in the conventional applicator 100, since the main body cylinder 101 and the plug members 103, 104 are firmly fixed by the adhesive or the fitting structure 105, the plug members 103, 104 cannot be easily removed from the main body cylinder 101. There has been a problem that it is difficult to fill and exchange the coating liquid 102 incorporated in the main body cylinder 101.
[0005]
Further, if the main body cylinder 101 and the plug members 103 and 104 of the applicator 100 are provided with a screw structure so that the plug members 103 and 104 are attached to the main body cylinder 101, filling of the coating liquid 102 incorporated in the main body cylinder 101 is achieved. Although the replacement can be performed relatively easily, the applicator 100 needs to screw the plug members 103 and 104 into the main body cylinder 101 at the time of manufacture, which is not suitable for mass production and has a problem of high cost.
[0006]
Therefore, in the present invention, when the applicator is used, the plug member does not come off from the main body cylinder of the applicator, and the plug member can be easily detached from the main body shaft when filling and replacing the coating liquid. The challenge was to provide an applicator that was easy to handle.
[0007]
[Means for Solving the Problems]
Accordingly, the invention according to claim 1, which is provided to solve the above-described problem, includes a main body cylinder in which the coating liquid is stored, and a plug member of at least one of a tip plug and a tail plug, and the main body cylinder includes In an applicator provided with a plug member and further equipped with a mounting maintenance structure for maintaining the state in which the plug member is mounted on the main body cylinder, at least one of the main body cylinder or the plug member is provided with an inclined portion, The applicator is provided with an engaging portion that engages with the inclined portion, and the plug member is pushed in the axial direction by twisting the plug member with respect to the main body cylinder.
[0008]
The mounting maintenance structure provided in the applicator of the present invention maintains the mounting state of the plug member on the main body cylinder, and can prevent the plug member from falling off the main body cylinder during use of the applicator.
[0009]
In the applicator of the present invention, when the plug member is twisted with respect to the main body cylinder, an inclined portion provided on at least one of the main body portion and the plug member is provided on the other side and engages with the inclined portion. The engaging portion is pressed in the axial direction, so that the plug member is pushed out in the axial direction. In the applicator according to the present invention, as described above, the applicator can remove the plug member from the main body cylinder by simply twisting the plug member with respect to the main body cylinder, so that the main body cylinder can be easily filled and replaced with the coating liquid. . On the other hand, since the applicator of the present invention has a mounting maintenance structure, when the applicator is used, the main body tube and the plug member are not detached, and the state in which both are integrated is maintained.
[0010]
The invention according to claim 2 is characterized in that an inner cylinder is further provided in the main body cylinder, and the coating liquid is stored in the inner cylinder and stored in the main body cylinder. It is a tool.
[0011]
In the applicator of the present invention, the coating liquid is accommodated in an inner cylinder separately provided inside the main body cylinder. Therefore, the filling and replacement of the coating liquid can be performed by taking out the inner cylinder from the main body cylinder and filling it with the coating liquid, or by replacing the inner cylinder built in the main body cylinder with a separate inner cylinder sufficiently containing the coating liquid. It is possible to perform refilling of the coating liquid simply by doing so. It is also possible to employ a configuration in which the coating liquid is dropped into the inner cylinder.
[0012]
The invention according to claim 3 is the applicator according to claim 1 or 2, wherein the applicator is a marker pen or a ballpoint pen.
[0013]
The invention described in claim 1 or 2 may be any applicator as long as it has the above-described structure, but a marker pen or a ballpoint pen is particularly suitable.
[0014]
According to a fourth aspect of the present invention, the attachment maintaining structure portion includes a protrusion provided on an inner periphery or an outer periphery of at least one of the main body cylinder and the plug member, and a protrusion engaging with the protrusion provided on the other. The applicator according to any one of claims 1 to 3, wherein the applicator is constituted by a joint portion.
[0015]
The attachment maintaining structure portion includes the protrusion and a protrusion engaging portion that engages with the protrusion, and the plug member is firmly attached to the main body cylinder by engaging the protrusion and the protrusion engaging portion. . Moreover, since the mounting | wearing maintenance structure part of this invention has a simple structure, manufacture of the applicator of this invention is easy.
[0016]
According to a fifth aspect of the present invention, the mounting and maintaining structure portion includes an annular protrusion provided on the entire circumference of at least one of the main body tube or the plug member, and the protrusion provided on the other of the main body tube or the plug member. The applicator according to any one of claims 1 to 4, wherein the applicator is configured by a protrusion or a recess that engages with the applicator.
[0017]
According to the attachment maintaining structure portion of the present invention, the attachment of the main body cylinder to the plug member is strengthened. Further, since the mounting and maintaining structure portion has a simple structure, it is easy to manufacture, and the manufacturing cost can be reduced.
[0018]
According to a sixth aspect of the present invention, the mounting and maintaining structure portion includes an annular protrusion provided on the entire circumference of at least one of the main body tube or the plug member, and the protrusion provided on the other of the main body tube or the plug member. The applicator according to claim 1, wherein the applicator is configured by an annular protrusion that engages with the applicator.
[0019]
According to this configuration, the main body cylinder can be easily attached to the plug member. Moreover, since the said plug member and the said main body cylinder engage over a perimeter, the said plug member does not remove | deviate from the said main body cylinder at the time of normal use. In addition, since the mounting and maintaining structure portion has a simple structure and is easy to manufacture, the manufacturing cost can be reduced.
[0020]
The invention according to claim 7 is characterized in that a part or all of the outer peripheral portion is inserted into the main body cylinder in a state of pressing the inner surface of the main body cylinder, and the pressing portion functions as a mounting maintenance structure portion. The applicator according to any one of 1 to 6.
[0021]
According to the mounting / maintaining structure of the present invention, it is possible to maintain the state where the plug member is mounted on the main body cylinder with a very simple structure.
[0022]
According to an eighth aspect of the present invention, the mounting / maintaining structure portion has an engaging portion in which the main body cylinder and the plug member are engaged with each other, and the main body cylinder and the plug member are engaged over a fixed engagement length. The length of the inclined portion in the axial direction is longer than the engagement length, and the engagement of the engaging portion is released by pushing the plug member in the axial direction. It is an applicator as described in Crab.
[0023]
In the applicator of the present invention, the mounting maintenance structure portion includes an engaging portion in which the main body tube and the plug member engage with each other. Therefore, according to the mounting and maintaining structure portion of the present invention, the coupling between the plug member and the main body tube becomes strong.
In addition, in the applicator of the present invention, the length of the inclined portion in the axial direction is longer than the engagement length, and the engagement of the engagement portion is released by pushing the plug member in the axial direction. Therefore, the applicator of the present invention can easily release the engaging portion.
[0024]
The invention according to claim 9 is the applicator according to any one of claims 1 to 8, wherein the inclined portion has a waveform.
[0025]
In the applicator of the present invention, since the inclined portion provided in at least one of the main body portion and the plug member is corrugated, the plug member can be smoothly rotated with respect to the main body cylinder. Further, when the plug member is twisted with respect to the main body tube, the inclined portion is pushed out in the axial direction by the engaging portion that engages with the inclined portion, so that the plug member can be easily detached from the main body tube. Furthermore, since the inclined portion has a corrugated shape, the axial displacement amount of the engaging portion that engages with the inclined portion does not change abruptly, and the plug member and the main body cylinder are separated smoothly.
The engaging portion may have any shape such as a corrugated shape or a protruding shape.
[0026]
The invention described in claim 10 is provided with a narrowed portion having a narrowed inner diameter in the vicinity of the end portion of the main body cylinder, and an inclined portion is provided at a portion facing the main shaft end side of the narrowed portion. The applicator according to any one of claims 1 to 9, characterized in that it is an applicator.
[0027]
In the applicator of the present invention, an inclined portion is provided at a portion facing the main body shaft end side of the narrowed portion of the main body cylinder, and an engaging portion is provided in the plug member attached to the main body cylinder. . Therefore, if the plug member is rotated with respect to the main body cylinder, the plug member is pushed out in the axial direction, and the plug member can be easily detached from the main body cylinder. The engaging portion may have any shape such as a corrugated shape or a protrusion.
[0028]
According to an eleventh aspect of the present invention, the plug member is a tail plug, the plug member has an insertion portion inserted into the main body cylinder and an exposed portion exposed from the main body cylinder, and the exposed portion is larger than the insertion portion. 11. The diameter is inclined, and the inclined portion is on the end surface of the main body cylinder or the end surface on the insertion portion side of the exposed portion, and the other is provided with an engaging portion that engages with the inclined portion. The applicator according to any one of the above.
[0029]
The applicator of the present invention has a configuration in which an inclined portion or an engaging portion is provided on the end surface of the main body cylinder. That is, in the applicator according to the present invention, the end surface of the exposed portion of the plug member on the insertion portion side is engaged with the end surface of the main body cylinder, and the plug member is pushed out in the axial direction.
[0030]
In the invention according to claim 12, when the plug member is twisted from the state where it is mounted at the normal position of the main body cylinder, the amount of axial movement caused by the engagement between the inclined portion and the engaging portion is small. The applicator according to any one of claims 1 to 11, wherein the applicator gradually changes to a larger state.
[0031]
In the applicator of the present invention, the amount of axial movement caused by the engagement between the inclined portion and the engaging portion changes gradually from a small state to a large state. Conversely, the initial thrust is large. Therefore, even if the plug member is fixed for some reason, the plug member can be easily removed by rotating the plug member.
[0032]
A thirteenth aspect of the present invention is the applicator according to any one of the first to twelfth aspects, wherein the plug member is provided with a tool engaging portion for engaging the tool.
[0033]
In the applicator of the present invention, since the tool engaging portion is provided on the plug member, the plug member can be easily detached from the main body cylinder by engaging and twisting a tool or the like with the tool engaging portion. Here, the tool engaging portion may have any shape such as a concave portion that can be engaged with a tool such as a screwdriver or a coin, or a convex portion protruding from an end portion of the plug member.
[0034]
The invention described in claim 14 is the applicator according to any one of claims 1 to 13, wherein the plug member and the main body cylinder are made of different materials.
[0035]
According to such a configuration, even if the plug member is attached to the main body cylinder for a long period of time, adhesion between the plug member and the main body cylinder does not occur, and the slidability is excellent. Therefore, since the applicator of the present invention can smoothly rotate the plug member with respect to the main body cylinder, a large force is not required for removing the plug member.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
The above-described tip plug is a plug member attached to one end of the main body cylinder, and a through hole is provided in the axial direction in order to lead out the coating liquid contained in the main body cylinder at a substantially central portion. In many cases, the nib tip is held by the nib.
The tail plug is attached to the other end of the main body cylinder and is a plug member for sealing the main body cylinder, and is attached for reasons such as preventing leakage of a coating liquid or the like built in the main body cylinder. is there.
[0037]
The main body cylinder, tip plug and tail plug of the applicator of the present invention are polypropylene (PP) resin, polyethylene (PE) resin, polyacetal (POM) resin, polyethylene terephthalate (PET) resin, polybutylene terephthalate (PBT) resin, polycarbonate Injection molding of acrylic resins such as (PC) resin, polymethylmethacrylic (PMMA) resin, styrene resin such as acrylonitrile butadiene styrene (ABS) resin, acrylonitrile styrene (AS) resin and polystyrene (PS) resin However, the present invention is not limited to this, and any material or manufacturing method may be used, such as a machined metal. However, when it is desired to reduce the permeability of ink solvent such as water or alcohol, polypropylene (PP) resin or polyethylene (PE) resin is suitable as a material for the main body cylinder and plug member of the applicator of the present invention. . Moreover, you may employ | adopt resin excellent in slidability, such as a polyacetal resin, a fluorine resin, nylon, a high density polyethylene resin (HDPE), in any one of a main body cylinder side or a plug member side. Of course, you may employ | adopt resin excellent in these slidability in both the main body cylinder side and the plug member side.
Furthermore, if the material of the main body cylinder and the material of the plug member such as the tail plug or the tip plug are different from each other, adhesion between the main body cylinder and the plug member does not occur, and the slidability is excellent. Therefore, according to this structure, since the plug member can be smoothly rotated with respect to the main body cylinder, it is not necessary to apply a large force to the removal of the plug member.
Further, the coating liquid incorporated in the main body cylinder of the applicator may be any coating liquid including water-based ink and oil-based ink. In addition, a through hole is provided in the center of the tip plug for leading out the coating liquid contained in the main body cylinder in the axial direction.
[0038]
The inclined portion is a portion inclined with respect to the axial direction of the main body cylinder or the plug member, and may be provided at any location of the main body cylinder and the plug member. The inclined portion may have any shape such as a straight shape or a waveform when viewed from the front. On the other hand, the engaging portion is engageable with the inclined portion in a state where the plug member is mounted on the main body cylinder. The engaging portion may have any shape as long as the front view is a shape that can be engaged with the inclined portion, such as a linear shape or a waveform.
[0039]
A configuration having a sloping portion or a sloping portion is recommended as the shape of the sloping portion or the engaging portion. For example, a configuration having a bottom A as shown in FIG. 10A, a curved slope B at both ends, and a steep slope C is recommended.
That is, if the inclined portion has a horizontal bottom A and a horizontal upper side D, there is a straight steep slope C between the bottom A and the upper side D, and between the bottom A and the straight steep slope C. Is provided with a slope B having a relaxation curve.
The bottom A and the slope B are gently connected by the slope B having a relaxation curve. As the curve of the slope B having a relaxation curve, it is possible to adopt a circular arc shape, a parabola, a sine curve, an ellipse, or the like.
Moreover, the structure which has the bottom part A like the inclination part shown in FIG.10 (b), has the linear gentle slope B at the both ends, and is further connected to the steep slope C is also recommended.
[0040]
When the plug member is mounted at the normal position of the main body cylinder as shown in FIGS. 10A and 10B, the engaging portion is in the position of the bottom A like the inclined portion. When the plug member is twisted and rotated, the engaging portion comes into contact with the gentle slope B. Therefore, the amount of movement in the axial direction caused by the engagement between the inclined portion and the engaging portion is small. Therefore, on the contrary, the axial thrust at the start of rotation is large. Therefore, even if the plug member is fixed for some reason, the plug member can be easily moved.
[0041]
When the inclined portion as shown in FIG. 10 is employed, when the plug member is twisted from the state where it is mounted at the normal position of the main body cylinder, the amount of axial movement caused by the engagement between the inclined portion and the engaging portion is The state will gradually change from a small state to a large state.
[0042]
【Example】
Examples of the present invention will be described below.
FIG. 1 is a view showing an applicator 1 (marker pen) according to a first embodiment of the present invention, in which (a) is a perspective view of the applicator 1 and (b) is an exploded cross-sectional view of the applicator 1 on the tail plug 3 side. (C) is a perspective view of the tail plug 3.
The applicator 1 has a main plug 4 with a tip plug 2 attached to one end and a tail plug 3 attached to the other end. Further, a through hole 5 extending in the axial direction is provided at the center of the tip plug 2, and a pen tip 6 as a felt coating portion is attached to the inside of the through hole 5.
[0043]
The tail plug 3 is provided with a sealing portion 7 having a diameter substantially the same as the outer diameter of the main body cylinder 4 at one end of the tail plug main body portion 8. There is part 9. The locking part 9 is a rib provided on the inner periphery and protrudes from the inner periphery.
The tail plug body 8 is a part inserted into the body tube 4, and the sealing part 7 is a part exposed from the body tube 4.
The sealing part 7 has a larger diameter than the tail plug body part 8. A tool engaging portion 10 is formed on the top surface of the sealing portion 7 by a linear recess that passes through the center of the sealing portion 7 and connects two points on the circumference of the sealing portion 7. Further, the end surface of the other end of the tail plug body 8 has an inclined corrugated engaging portion 11, and the engaging portion 11 includes a peak portion 11 a protruding in the axial direction and a valley protruding in the opposite direction to the peak portion. It is the structure which the part 11b combined alternately.
[0044]
On the other hand, the main body cylinder 4 is a cylinder whose both ends are open, and a pair of locking portions 12 which are annular recesses and engageable with the locking portion 9 of the tail plug 3 are provided on the inner periphery of one end portion. The engagement portion 9 and the pair engagement portion 12 constitute an attachment maintaining structure portion 13 that maintains the state where the tail plug 3 is attached to the main body cylinder 4.
[0045]
In the present embodiment, the other part of the tail plug body 8 also functions as a mounting maintenance structure. That is, the outer diameter of the tail plug main body 8 (excluding the locking portion 9) is slightly larger than the inner diameter of the main body cylinder 4. In the state where the tail plug main body 8 is built in the main body cylinder 4, the tail plug is The main body 8 is in a state of pressing the inner surface of the main body cylinder 4. Therefore, the state in which the tail plug 3 is attached to the main body cylinder is also maintained by the pressing force of the tail plug body 8. In this embodiment, the locking portion 9 and other portions of the tail plug main body 8 constitute the mounting maintenance structure portion 13, but the locking configuration of the tail plug 3 may be configured only by the locking portion 9. Conversely, the locking portion 9 may be omitted, and the tail plug 3 may be prevented from coming off only by the pressing force of the tail plug body 8.
[0046]
The width L of the annular concave portion serving as the paired locking portion 12 employed in the present embodiment is smaller than the height difference X between the peak portion 11a and the valley portion 11b of the tail plug 3 serving as the engaging portion 11. That is, the width L of the annular recess is shorter than the axial length X of the inclined portion.
[0047]
Further, a narrowed portion 14 having a narrowed inner diameter is formed in the vicinity of the end portion of the main body cylinder 4 on the pair locking portion 12 side, and an inclined waveform is formed on a portion of the narrowed portion 14 facing the main shaft end side. The inclined portion 15 is provided. In other words, the inclined portion 15 has a configuration in which the protruding portions 15a protruding toward the locking portion 12 and the recesses 15b protruding in the opposite direction to the protruding portions 15a are alternately combined. In the present embodiment, the tail plug 3 and the main body cylinder 4 are made of resin, but any material may be used, such as metal cut. The diameter of the sealing portion 7 may be any size, but is preferably substantially the same as the outer diameter or inner diameter of the main body cylinder 4.
Further, an inner cylinder 16 having a cylindrical shape smaller than the inner diameter of the main body cylinder 4 and holding the coating liquid is disposed inside the main body cylinder 4. That is, a liquid absorbing member called batting is built in the inner cylinder, and a coating liquid such as ink is soaked into the batting.
[0048]
Usually, the applicator 1 is used in a state in which the tail plug 3 is attached to the main body cylinder 4. That is, the tail plug 3 is inserted from the end of the main body cylinder 4 on the pair locking portion 12 side to the position where the sealing portion 7 contacts the main body cylinder 4 from the end portion of the tail plug main body 8. The tail plug 3 is attached to the main body cylinder 4 by being locked to the locking portion 12.
In the present embodiment, as described above, the tail plug main body portion 8 is also prevented from coming off by pressing the inner surface of the main body cylinder 4, but most of the force with respect to the pull-out is associated with the locking portion 9. Rely on the engaging force of the stop 12.
That is, in the state where the tail plug 3 is attached to the main body cylinder 4, the locking portion 9 on the tail plug 3 side and the paired locking portion 12 on the main body cylinder 4 side are engaged with each other to prevent the plug member 3 from coming off. It is made. Specifically, the annular rib projection as the locking portion 9 engages with the annular recess as the pair locking portion 12. Therefore, the engagement length between the locking portion 9 on the tail plug 3 side and the paired locking portion 12 on the main body cylinder 4 side is equal to the groove width L of the annular recess serving as the paired locking portion 12.
At this time, the engaging portion 11 of the tail plug 3 is engaged with the inclined portion 15 of the main body cylinder 4.
[0049]
When the tail plug 3 is pulled out in the axial direction of the main body cylinder 4, since the locking portion 9 is firmly engaged with the pair of locking portions 12, a considerable tensile force is required in the axial direction. However, when the tail plug 3 is twisted with respect to the main body cylinder 4, it is easily detached from the main body cylinder 4.
[0050]
That is, when the tail plug 3 is twisted with respect to the main body cylinder 4, the corrugated engaging portion 11 provided at the end of the tail plug main body portion 8 is engaged with the engaging portion 11. Rotate against. Along with the rotation, the protrusion portion 15a of the inclined portion 15 rotates while contacting the peak portion 11a of the engaging portion 11, and a repulsive force is generated in the axial direction between the tail plug 3 and the main body cylinder 4, and the tail plug The repulsive force gradually increases with the rotation of 3. The tail plug 3 is firmly fixed to the main body cylinder 4 by the locking force generated when the locking portion 9 is locked to the pair locking portion 12, but when the rotation of the tail plug 3 is advanced, the axial direction is eventually reached. When the repulsive force increases and the repulsive force eventually becomes larger than the locking force, the main body cylinder 4 is pushed out in the axial direction and the tail plug 3 is detached from the main body cylinder 4.
[0051]
Particularly in this embodiment, as shown in FIG. 1, the axial movement amount of the tail plug 3 is larger than the width L of the pair locking portion 12 (annular recess) that functions to retain the tail plug 3 in the main body shaft 4. Since the height difference X (the length of the inclined portion in the axial direction) of the inclined portion 15 is longer, the amount of movement of the tail plug 3 caused by twisting the tail plug 3 is the same as the engaging portion 9 and the engaging portion. 12 engagement lengths are exceeded. Therefore, when the tail plug 3 is twisted, the locking portion 9 is surely detached from the pair locking portion 12.
[0052]
Since the tool engaging portion 12 is provided on the surface of the sealing portion 7 of the tail plug 3 used in the applicator 1, if a tool such as a screwdriver or a coin is engaged with the tool engaging portion 12, Can rotate more easily. The applicator 1 has the tail plug 3 firmly attached to the main body cylinder 4 during normal use and cannot be easily removed. However, if the tail plug 3 is rotated relative to the main body cylinder 4, the tail plug 3 can be easily removed from the main body cylinder 4. Since the stopper 3 can be removed, the coating liquid can be easily filled and replaced in the main body cylinder 4. Further, since the tail plug 3 can be integrated simply by being pushed into the end of the main body cylinder 4, the applicator 1 can be easily manufactured.
[0053]
The tool engaging portion 10 provided on the surface of the sealing portion 7 of the tail plug 3 is not limited to the above-described linear depression shape, and any shape such as a cross-shaped depression as shown in FIG. Although it may be a thing, it is desirable that it is a shape which tools, such as tools, such as a coin and a driver, are easy to engage. Further, as shown in FIG. 3, the tool engaging portion 10 may be a convex portion protruding in a straight line connecting two points on the circumference of the sealing portion 7. Further, the shape of the convex portion is not limited to a straight line, and may be any shape such as a cross-shaped shape shown in FIG. Furthermore, the tool engaging part 10 may be a recessed part provided on the side surface of the sealing part 7 as shown in FIG. In addition, the unevenness | corrugation and shape of the tool engaging part 10 provided in the side surface of the sealing part 7 may be what.
[0054]
Further, in the present embodiment, the engaging portion 11 provided in the tail plug 3 is corrugated when viewed from the front. Any shape is acceptable.
On the other hand, the inclined portion 15 provided in the main body cylinder 4 of the present embodiment has a corrugated shape, but the inclined portion 15 is not limited to the corrugated shape as in the case of the tail plug 3, and the front view has a linear shape with an inclination. Any shape such as a thing or a protrusion may be used.
[0055]
Further, in the applicator 1, the tail plug 3 is fixed to the main body cylinder 4 by the mounting / maintaining structure portion 13 constituted by the locking portion 9 and the pair of locking portions 12, but the mounting / maintaining structure portion 13 has the structure described above. It is not limited to. That is, the attachment maintaining structure 13 may be constituted by a recess provided on the outer periphery of the tail plug body 8 of the tail plug 3 and a protrusion engaging with the recess provided on the inner periphery of the body tube 4. In addition, the attachment maintaining structure 13 may be provided with protrusions on the outer periphery of the tail plug main body 8 of the tail plug 3 and the inner periphery of the main body cylinder 4 so that both are engaged.
[0056]
The second embodiment of the present invention will be described below. Since the applicator 20 of the present embodiment has substantially the same structure as the applicator 1 described above, the same parts are denoted by the same reference numerals, and detailed description thereof is omitted.
FIG. 6 is a cutaway perspective view of the applicator 20 of the present embodiment on the tail plug 3 side. In the applicator 20 of the present embodiment, the positions of the engaging portion 11 provided on the tail plug 3 and the inclined portion 15 provided inside the main body tube are different from those of the applicator 1 described above. That is, the engaging portion 11 is provided at an intermediate portion in the axial direction of the tail plug main body portion 8, and the inclined portion 15 is provided at a position where it can engage with the engaging portion 11 of the main body cylinder 4.
[0057]
The tail plug body portion 8 is inserted from the end of the main body cylinder 4 on the pair locking portion 12 side, and the locking portion 9 is locked to the pair locking portion 12 so that the tail plug 3 is attached to the main body cylinder 4. ing. Normally, the engaging portion 11 of the tail plug 3 is engaged with the inclined portion 15 of the main body cylinder 4.
[0058]
On the other hand, when the tail plug 3 is twisted with respect to the main body shaft 4, the corrugated engagement portion 11 provided in the intermediate portion in the axial direction of the tail plug main body portion 8 is corrugated with the engagement portion 11. It rotates with respect to the inclined portion 15. At this time, the protrusion 15a of the inclined portion 15 moves while coming into contact with the mountain portion 11a of the engaging portion 11 with the rotation, and a repulsive force is generated between the tail plug 3 and the main body cylinder 4, and the tail plug 3 The repulsive force increases with the progress of rotation. The tail plug 3 is firmly fixed to the main body cylinder 4 by the locking force generated when the locking portion 9 is locked to the pair of locking portions 12. Becomes larger than the locking force, the main body cylinder 4 is pushed out in the axial direction, and the tail plug 3 is detached from the main body cylinder 4.
[0059]
In the applicator 20 of the present embodiment, both the engaging portion 11 and the inclined portion 15 have a waveform when viewed from the front, but the engaging portion 11 and the inclined portion 15 have any shape such as a straight line when viewed from the front. It may be a thing. As shown in FIG. 7, the engaging portion 11 and the inclined portion 15 may be protrusions provided on the outer periphery of the tail plug body 8 and the inner periphery of the body tube 4, respectively.
[0060]
Since the tool engaging portion 12 similar to the applicator 1 is provided on the tail plug 3, the tool engaging portion 12 can be rotated more easily by engaging a tool such as a screwdriver or a coin. Therefore, the applicator 20 has the tail plug 3 firmly attached to the main body cylinder 4 during normal use and cannot be easily removed. On the other hand, when the applicator 20 rotates the tail plug 3 with respect to the main body cylinder 4, the tail plug 3 can be easily removed from the main body cylinder 4, and the application liquid can be replenished into the main body cylinder 4. In addition, the tool engaging part 10 provided in the tail plug 3 may have any shape like the applicator 1 of the first embodiment.
[0061]
FIG. 8 is a cutaway perspective view of the vicinity of the tail plug 3 of the applicator 30 according to the third embodiment of the present invention. In addition, since the applicator 30 of the present embodiment also has the same structure as the applicators 1 and 20, the same reference numerals are given to common parts, and detailed description thereof is omitted.
In the applicator 30 of this embodiment, unlike the applicators 1 and 20, the engaging portion 11 is provided on the back surface of the sealing portion 7 of the tail plug 3.
The sealing part 7 is a part exposed from the main body cylinder 4 as described above, and has a larger diameter than the tail plug main body part 8. And in the applicator 30 of a present Example, the engaging part 11 exists in the insertion part side end surface of the exposed part part of the tail wire 3. FIG. On the other hand, the inclined portion 15 is provided at the opening end of the main body cylinder 4.
[0062]
In the applicator 30, the tail plug body 8 is inserted from the end of the main body cylinder 4 on the side of the pair locking portion 12 and the main body cylinder 8 is locked by locking the locking portion 9 to the pair locking portion 12. 4 is attached. Normally, the engaging portion 11 of the tail plug 3 is engaged with the inclined portion 15 of the main body cylinder 4.
[0063]
On the other hand, when the tail plug 3 is rotated with respect to the main body cylinder 4, the tail plug 3 is easily detached from the main body cylinder 4. This is because when the engaging portion 11 rotates with respect to the inclined portion 15, the protruding portion 15 a of the inclined portion 15 moves while contacting the mountain portion 11 a of the engaging portion 11, and the tail plug 3 and the main body cylinder 4 are moved. This is because a repulsive force is generated during the period, and the main body cylinder 4 is pushed out in the axial direction by the repulsive force.
[0064]
Since the tool engaging portion 12 similar to the applicator 1 is provided in the tail plug 3, it can be easily rotated by engaging a tool such as a screwdriver or a coin with the tool engaging portion 12. Therefore, although the applicator 30 is not easily detached from the main body cylinder 4 by the action of the mounting maintenance structure portion during normal use, the main body cylinder 4 can be easily obtained by rotating the tail plug 3 with respect to the main body cylinder 4. It is an applicator which can remove the tail plug 3 from. Therefore, the applicator 30 of the present embodiment can easily fill and exchange the coating liquid into the main body cylinder 4. In addition, the tool engaging part 10 provided in the tail plug 3 may have any shape like the applicator 1 of the first embodiment.
[0065]
Then, the applicator 40 of 4th Example of this invention is demonstrated.
FIG. 9 is an exploded sectional view of the applicator 40 on the tip plug 2 side. The tip plug 2 includes a tip portion 41, a mounting portion 42, and a contact portion 43. The tip end portion 41 has a substantially conical shape, and the cross-sectional area decreases toward the tip end. Further, the tip portion 41 is provided with a through hole 5, and a pen tip 6, which is a felt coating portion, is attached to the inside of the through hole 5 in an axial direction. In addition, an outer periphery of the mounting portion 42 includes a pair of locking portions 44 that are annular recesses, and an end portion of the mounting portion 42 protrudes in the axial direction with a peak portion 45a and protrudes in a direction opposite to the peak portion. Engagement portions 45 in which the valley portions 45b are alternately combined to form a waveform are provided. Note that the engaging portion 45 is not limited to the waveform inclination, and may have any shape as long as it is inclined in the axial direction.
[0066]
On the other hand, the main body cylinder 4 is a cylinder whose both ends are open, and an engaging portion 46 projecting in an annular shape is provided on the inner periphery on the tip plug 2 side. The locking portion 46 and the paired locking portion 44 can be locked to each other, and an attachment maintaining structure portion 47 is configured by both. Further, in the vicinity of the end portion of the main body cylinder 4, the inner diameter of the main body cylinder 4 is narrowed to form a constricted portion 48, and a portion of the constricted portion 48 facing the main body shaft end side has an inclined waveform inclination. A portion 49 is provided. The inclined portion 49 is formed in a waveform by alternately combining a protruding portion 49a protruding in the axial direction and a recess 49b protruding in the opposite direction to the protruding portion 49a. In addition, an inner cylinder 50 having a cylindrical shape smaller than the inner diameter of the main body cylinder 4 and having a coating liquid held therein is disposed inside the main body cylinder 4, and at the end of the inner cylinder 50, the application section The end of 6 is inserted.
[0067]
In the applicator 40, the end plug 2 is inserted into the end portion of the main body cylinder 4 on the side of the locking portion 46 from the mounting portion 42 side. Further, in the applicator 40, the contact portion 43 of the tip plug 2 is in contact with the end portion of the main body cylinder 4, and the end portion of the application portion 6 is mounted in the inner cylinder 50. Further, the inclined portion 49 of the main body cylinder 4 is engaged with the engaging portion 45 of the tip plug 2. In the applicator 40, the locking portion 46 of the main body cylinder is firmly locked to the pair locking portion 44 of the tip plug 2, and the strength in the axial direction is particularly strong.
[0068]
Further, when the tip plug 2 is twisted with respect to the main body cylinder 4 in the applicator 40, the crest portion 45a of the engaging portion 45 moves in contact with the protruding portion 49a of the inclined portion 49 in conjunction therewith, A repulsive force is generated between the main body cylinders 4. When the tip plug 2 is further twisted, the repulsive force increases with the progress of the rotation of the tip plug 2, and eventually the repulsive force becomes stronger than the locking force of the pair locking portion 44 and the locking portion 46, and the main body cylinder 4 Is pushed out in the axial direction, and the tip plug 2 is detached from the main body cylinder 4.
[0069]
Therefore, when replenishing the coating liquid to the inner cylinder 50 built in the applicator 40 or replacing the inner cylinder 50, the tip plug 2 can be removed simply by twisting the tip plug 2 sealing the main body cylinder 4. It can be removed and the coating solution can be easily replenished or the inner cylinder 50 can be replaced.
[0070]
The first to fourth embodiments described above relate to the marker pen, but the applicators 1, 20, 30, and 40 are not limited to marker pens, and can be applied to any applicator including a ballpoint pen.
[0071]
【The invention's effect】
Since the applicator of the present invention has the mounting maintenance structure, the plug member and the main body cylinder are firmly fixed. In addition, since the plug member can be easily removed by twisting with respect to the main body cylinder, it is possible to fill and exchange the coating liquid into the main body cylinder. Further, when the coating liquid is accommodated in the inner cylinder and the inner cylinder is accommodated in the main body cylinder, the coating liquid can be easily filled and replaced. Furthermore, in the applicator according to the present invention, the attachment maintaining structure portion is configured with a simple structure such as a protrusion or a recess, and thus is easy to manufacture.
[Brief description of the drawings]
1A and 1B are views showing an applicator according to a first embodiment of the present invention, in which FIG. 1A is a perspective view of the applicator, FIG. 1B is an exploded cross-sectional view of a tail plug side of the applicator, and FIG. It is a perspective view of a stopper.
FIG. 2 is a perspective view showing a modified embodiment of the tail plug of the applicator according to the first embodiment of the present invention.
FIG. 3 is a perspective view showing another modified embodiment of the tail plug of the applicator according to the first embodiment of the present invention.
FIG. 4 is a perspective view showing still another modified embodiment of the tail plug of the applicator according to the first embodiment of the present invention.
FIG. 5 is a perspective view showing still another modified embodiment of the tail plug of the applicator according to the first embodiment of the present invention.
FIG. 6 is a cutaway perspective view of the vicinity of a tail plug of an applicator according to a second embodiment of the present invention.
FIG. 7 is a cutaway perspective view showing a modified embodiment of the tail plug and the body tube of the applicator of the second embodiment of the present invention.
FIG. 8 is a cutaway perspective view of the vicinity of a tail plug of an applicator according to a third embodiment of the present invention.
FIG. 9 is a cutaway perspective view of the vicinity of a tail plug of an applicator according to a fourth embodiment of the present invention.
FIG. 10 is an explanatory view showing an example of an inclined portion and an engaging portion.
FIG. 11 is a perspective view showing a conventional applicator.
[Explanation of symbols]
1,20,30,40,100 Applicator
2 tip
3 Tail plug
4,101 Body cylinder
9,46 Locking part
10 Tool engagement part
11, 45 engagement part
12, 44 Pair locking part
13, 47 Wearing maintenance structure
14,48 Stenosis
15, 49 Inclined part
16,50 inner cylinder

Claims

A main body cylinder that stores the coating liquid, and a plug member that is at least one of a tip plug and a tail plug, the plug member is mounted on the main body cylinder, and the plug member is mounted on the main body cylinder. In the applicator provided with the maintenance structure portion, at least one of the main body tube or the plug member is provided with an inclined portion, and the other is provided with an engaging portion that engages with the inclined portion, and the plug member is attached to the main body tube. The applicator is characterized in that the plug member is pushed out in the axial direction by twisting with respect to the shaft.

The applicator according to claim 1, wherein an inner cylinder is further provided in the main body cylinder, and the coating liquid is stored in the inner cylinder and stored in the main body cylinder.

The applicator according to claim 1 or 2, wherein the applicator is a marker pen or a ballpoint pen.

The mounting / maintaining structure portion includes a protrusion provided on the inner periphery or the outer periphery of at least one of the main body cylinder or the plug member, and a protrusion engaging portion that engages with the protrusion provided on the other. The applicator according to any one of claims 1 to 3.

The mounting maintenance structure is configured by an annular protrusion provided on the entire circumference of at least one of the main body cylinder or the plug member, and a protrusion or a recess that engages with the protrusion provided on the other side of the main body cylinder or the plug member. The applicator according to claim 1, wherein the applicator is used.

The mounting / maintaining structure portion is configured by an annular protrusion provided on the entire circumference of at least one of the main body cylinder or the plug member and an annular protrusion engaged with the protrusion provided on the other side of the main body cylinder or the plug member. The applicator according to claim 1, wherein the applicator is used.

The plug member is inserted into the main body cylinder in a state where a part or all of the outer peripheral portion presses the inner surface of the main body cylinder, and the pressing portion functions as a mounting maintenance structure portion. The applicator according to crab.

The attachment maintaining structure portion has an engaging portion in which the main body cylinder and the plug member are engaged with each other, and the main body cylinder and the plug member are engaged over a certain engagement length, and the axial length of the inclined portion. The applicator according to any one of claims 1 to 7, wherein the applicator is longer than the engagement length, and the engagement of the engagement portion is released by pushing the plug member in the axial direction.

The applicator according to any one of claims 1 to 8, wherein the inclined portion has a waveform.

10. A narrowed portion having a narrowed inner diameter is provided in the vicinity of the end of the main body cylinder, and an inclined portion is provided at a portion facing the main shaft end side of the narrowed portion. The applicator according to any one of the above.

The plug member is a tail plug, the plug member has an insertion part inserted into the main body cylinder and an exposed part exposed from the main body cylinder, the exposed part is larger in diameter than the insertion part, and the inclined part is the main body cylinder The applicator according to any one of claims 1 to 10, wherein an engagement portion that is provided on an end surface of the first portion or on an insertion portion side end surface of the exposed portion and that is engaged with the inclined portion is provided on the other end surface.

When the plug member is twisted from the state where it is mounted at the normal position of the main body cylinder, the amount of axial movement caused by the engagement between the inclined portion and the engaging portion changes from a small state to a gradually large state. The applicator according to any one of claims 1 to 11.

The applicator according to any one of claims 1 to 12, wherein the plug member is provided with a tool engaging portion with which the tool is engaged.

The applicator according to any one of claims 1 to 13, wherein the plug member and the main body tube are made of different materials.