JP3910428B2

JP3910428B2 - Liquid cosmetic applicator

Info

Publication number: JP3910428B2
Application number: JP2001372099A
Authority: JP
Inventors: 秀行岸
Original assignee: 株式会社新和製作所
Priority date: 2001-12-06
Filing date: 2001-12-06
Publication date: 2007-04-25
Anticipated expiration: 2021-12-06
Also published as: JP2003169713A

Description

【０００１】
【発明の属する技術分野】
本発明は、例えばリップグロス塗布具や液体口紅塗布具やアイライナーやエナメル塗布具などの液体化粧料塗布具で、液体化粧料容器の筆軸挿入用の口部内側に、筆軸に付着した化粧料を扱くワイパーが周設された液体化粧料塗布具に係わり、特に、筒形状の金属製の口金によって先端部に筆毛がカシメ固定された筆軸を備えた液体化粧料塗布具に関する。
【０００２】
【従来の技術】
この種の液体化粧料塗布具は、図９に示すように、内部に液体化粧料１を収容した容器２と、この容器２の口部３に挿着できるキャップ６を兼ねる筆軸５とから構成されている。化粧料容器の口部３の内周には、樹脂やゴム等の可撓性部材で構成されたワイパー４が周設されており、化粧料容器２（の口部３）から筆軸５を抜き出す際に、その軸部５ａに付着した化粧料をワイパー４の扱き部４ａが扱き落とすようになっている。筆軸５の軸部５ａ先端には、筒形状の金属製の口金６によって筆毛７がカシメ固定されている。また、筆軸５のワイパー４への挿入がスムーズとなるように、口金６の先端側６ａは縮径されたテーパ形状に構成されている。
【０００３】
【発明が解決しようとする課題】
しかし、前記した従来の塗布具では、ワイパー４（の扱き部４ａ）の開口面積が口金６の外形よりも小さいため、図１０に示すように、筆軸５を化粧料容器２（の口部３）に挿入する際に、筆毛７の側面がワイパー４の開口周縁部と干渉して折れるという、折れ毛７ａが発生し易い。このため、この折れ毛が原因で、筆軸５を化粧料容器２（の口部３）にスムーズに挿入できないとか、化粧料１を適切に塗布できないという問題があった。
【０００４】
発明者は、この折れ毛を回避するには、口金６を細くして筆毛７全体の横断面積を小さくすれば、筆毛７の側面がワイパー４の開口周縁部と干渉しないと考えた。しかし、口金６全体を細くすると、ワイパー４のしごき作用が低下するので、口金６全体の口径は小さくできない。また、口金６全体の厚さを厚くすれば、口金６の内径が小さくなる分、結束できる筆毛７の量が減り、筆毛７に保持できる化粧料も減少して好ましくない。そこで、口金６の先端開口部の厚さを内側に向けて厚くすれば、口金６から延出する筆毛７全体の横断面積が小さくなって、筆毛側面のワイパー４との干渉を回避できるし、筆毛７をカシメる口金６全体の内径が小さくなって筆毛７の結束量が減ることもない、と考えた。
【０００５】
そして、実際に試作品を作って確かめたところ、非常に有効であることが確認されたので、本発明を提案するに至ったものである。
【０００６】
本発明は、前記した従来技術の問題点に鑑みなされたもので、その目的は、筆軸の容器口部への挿入の際に筆毛がワイパーと干渉しない液体化粧料塗布具を提供することにある。
【０００７】
【課題を解決するための手段】
前記目的を達成するために、請求項１，２に係る液体化粧料塗布具においては、上方に開口する口部が設けられた液体化粧料容器と、前記口部からの出し入れが可能で、先細筒形状の金属製の口金により軸部先端に筆毛部をかしめ固定した筆軸とを備え、前記容器の口部内側には、前記筆軸の軸部を口部から抜き出す際に軸部に付着した化粧料を扱くワイパーが周設された液体化粧料塗布具において、前記筆軸の口金の先端側では、周方向の少なくとも一部の領域をテーパ形状に形成するとともに、前記テーパ形状に形成した領域の肉厚が先端開口側に行くほど内側に向けて徐々に厚肉に形成して、前記ワイパーの開口面積に対する口金先端開口面積を狭めるように構成した。
（作用）ワイパーの開口面積に対する口金先端開口面積が狭い分、口金から延出する筆毛部全体の横断面積も小さく、筆軸を液体化粧料容器の口部に挿入する際に、筆毛部側面がワイパー開口周縁部と干渉しにくい。一方、ワイパーの開口面積に対する口金（先端部）外周の占める面積は従来と同じであるため、軸部のワイパー開口への挿入性や筆軸をワイパー開口から抜き出す際のワイパーのしごき作用は従来と変わらない。
【０００８】
また、請求項１，２記載の液体化粧料塗布具においては、前記筆毛部を、獣毛または先端ほど細い形状に形成した合成樹脂製ブリッスルからなる人工毛が多数集束されて、その後端部を結束しその横断面が先端側ほど小さい筆毛結束一体化ユニットで構成するようにした。
（作用）前記筆毛部は、獣毛（獣毛は先端ほど細い形状となっている）または先端ほど細い形状に形成された合成樹脂製ブリッスルからなる人工毛を多数集束して、その後端部を結束した筆毛結束ユニットで構成されており、筆毛部はその先端ほど尖った形状である。このため、第１に、この筆毛部（筆毛結束ユニット）を筆先側から口金に挿入する際に、口金の先端開口部が縮径しているが口金先端側の内周面がテーパ形状の滑らかな面で形成されているため、筆先が口金から所定量だけ突出する口金内所定位置まで筆毛部（筆毛結束ユニット）をスムーズに挿入できる。第２に、口金内に挿入された筆毛部（筆毛結束ユニット）は、例えば接着剤を用いてその後端部が口金内側に接着固定されるが、口金の先端開口側のテーパ形状の滑らかな内周面が筆毛部（筆毛結束ユニット）の外側面全体に均一に圧接するので、筆毛部（筆毛結束ユニット）の口金に対する位置決め保持が容易で、それだけ筆毛部（筆毛結束ユニット）を口金に接着固定する作業が簡単となる。
【０００９】
また、請求項１においては、前記筆軸を、前記口金先端開口部および口金先端開口部から延出する筆毛部の横断面が扁平な形状の平筆で構成し、前記口金先端側における扁平な口金先端開口部の長径方向に対向する領域の厚さを先端側ほど厚肉で、該口金先端側の内周面が前記筆毛部の側面形状に倣う滑らかな形状となるように構成した。
（作用）口金先端開口部の横断面が扁平な形状で、口金から延出する筆毛部全体の横断面も扁平な形状である平筆では、一般に筆毛部全体の扁平な側面が塗布対象面に当たるように使用（塗布）されるため、扁平な筆毛部全体がより一層扁平な形状になる（扁平度が大きくなる）傾向にあるが、口金先端開口部の長手方向の間隔が狭められた分、口金から延出する筆毛部の扁平幅の両端（扁平方向の両側）もそれだけ狭められて、平筆を液体化粧料容器の口部に挿入する際に、筆毛部の側面のワイパー開口周縁部との干渉が回避されて、折れ毛の発生が抑制される。
【００１０】
請求項２においては、前記筆軸を、口金先端開口部および口金先端開口部から延出する筆毛部の横断面が円形の丸筆で構成し、前記テーパ形状に形成した口金先端側における全周の厚さを先端側ほど厚肉で、該口金先端側の内周面が前記筆毛部の側面形状に倣う滑らかな形状となるように構成した。
（作用）丸筆では、口金先端開口部の横断面が円形で、口金から延出する筆毛部全体の横断面も円形であるが、口金先端開口部における筆毛部全体の円形横断面積が縮径されているため、丸筆を液体化粧料容器の開口部に挿入する際に、筆毛部の側面のワイパー開口周縁部との干渉が回避されて、折れ毛の発生が抑制される。
【００１１】
【発明の実施の形態】
次に、本発明の実施の形態を実施例に基づいて説明する。
【００１２】
図１〜図４は本発明の第１の実施例を示し、図１は本発明の第１の実施例である液体化粧料塗布具の縦断面図、図２は口金の拡大縦断面図、図３は口金の水平断面図（図２に示す線III−IIIに沿う断面図）、図４はワイパーと口金開口部の内径の大きさを示す図である。
【００１３】
これらの図において、符号１０は、上方に口部１２が開口し、内部にリップグロス液１１が収容されている円筒形状の細長い化粧料容器で、容器１０の内径より小さい筆軸挿入用の口部１２の外周には雄ねじ部１３が形成されて、筆軸３０に一体化したキャップ３２の雌ねじ部３３が螺合できるように構成されている。
【００１４】
一方、口部１２の内側には、可撓性に富む合成樹脂製の円筒形状の中栓１４が嵌着されており、容器１０内に突出する中栓１４の内側下端部寄りには、筆軸３０の軸部３６を抜き出す際に、軸部３６に付着したリップグロス液１１を扱き落として清掃するワイパー１５が形成されている。
【００１５】
即ち、ワイパー１５は、中栓１４の内側から斜め下方に延出して下端側程口径が小さい先細円筒型（従来のワイパーを示す図１０参照）に形成されている。ワイパー１５の先端部には、周方向等分４カ所に縦スリット１５ａ（図４参照）が設けられて、ワイパー１５の可撓性が高められており、スリット１５ａによって周方向に分割された各分割片が筆軸３０の軸部３６外表面に密着して軸部３６に付着したリップグロス液を扱く扱き部１５ｂを構成している。
【００１６】
また、筆軸３０の軸部３６の先端には、先端側が縮径する金属（例えばアルミニウム）製の円筒形状の口金４０を介して筆毛部３８が固定されている。口金４０は、軸部３６と同一の外径に形成された後端側の基端部４１と、先端側ほど縮径するテーパ形状の先端部４２で構成されている。
【００１７】
また、筆毛部３８は、先端ほど細い１本１本の毛（天然の獣毛や一般にブリッスルと称される合成樹脂製の人工の毛）を集束して、その後端部３８ａを結束（獣毛の場合は接着剤により接合、ブリッスルの場合は溶着または接着剤により接合）することで、筆毛結束ユニットとして結束一体化したもので、その横断面は、先端側ほど小さくなっている。そして、筆毛部３８を口金４０の後端側からその先端部が口金４０の前方に突出するように挿通し、筆毛部３８後端部が接着剤４４により口金４０内側に固定されている。
【００１８】
そして、この筆毛部３８を一体化した口金４０の後端部に、軸部３６の先端部を圧入するとともに、口金４０の後端部が周方向３カ所においてダボカシメにより固定されている。図２符号３６ａは、軸部３６の先端に設けられた突起で、筆毛部３８の後端部３８ａに当接して筆毛部３８が口金４０内でがたつかないように保持するためのものである。
【００１９】
口金４０の後端側の基端部４１の外径は、軸部３６と面一に形成されて、ワイパー１４のしごき作用を妨げない。一方、口金４０の先端部４２は、筆軸３０（口金４０）をワイパー１５の開口にスムーズに挿入できるように、また筆毛部３８の外周面を均一に把持できるように、筆毛部３８の側面形状に倣ったテーパ形状に形成されている。
【００２０】
また、口金４０の基端部４１の厚さは軸方向に均一であるが、テーパ形状の先端部４２の厚さは、先端側に行くほど徐々に半径方向内側に向けて肉厚に形成されて、口金４０の先端開口面積Ｓ２は、図４に示すように、口金４０全体を均一の厚さに形成した場合の先端開口面積Ｓ２’に比べて肉厚にした分だけ狭められている。例えば、口金４０の基端部４１の厚さｔ１は０．０２ｍｍ、先端部４２の厚さｔ２は０．０２ｍｍから先端側に行くほど徐々に厚くなって、開口周縁部の厚さは０．０４ｍｍとなっている。
【００２１】
このため、図４に示すように、ワイパー１５の開口面積Ｓ１に対する口金先端開口面積Ｓ２が狭い分、口金４０から延出する筆毛部３８全体の横断面積Ｓ３も狭められて、筆軸３０を液体化粧料容器１０の口部１２に挿入する際に、筆毛部３８の側面３８ｂがワイパー開口周縁部１５ｂと干渉しにくい。
【００２２】
したがって、筆毛部３８をワイパー１５の開口周縁部と干渉させることなく筆軸３０（筆毛部３８）を液体化粧料容器１０内に挿入できるので、筆軸３０を容器１０に挿入する際に筆毛部３８の側面３８ａがワイパー開口周縁部１５ｂと干渉して発生する折れ毛が原因で、筆軸３０を容器１０内にスムーズに挿入できないとか、化粧料１１の適切な塗布ができない等の不具合がない。
【００２３】
また、ワイパー１５の開口面積Ｓ１に対する口金４０（の基端部４１）の占める面積Ｓ４は従来と同じであるため、筆軸３０を抜き出す際にはワイパー１５によって軸部３６や口金４０に付着した余分の化粧料が確実にしごき落とされるので、軸部３６や口金４０に付着した化粧料によって手がべとつくという不具合もない。
【００２４】
図５および図６は、本発明の第２の実施例を示し、図５（ａ）は本発明の第２の実施例である液体化粧料塗布具の縦断面図、図（ｂ）は図５（ａ）に示す線Ｖ−Ｖに沿う断面図、図６は口金の横断面図（図５（ａ）に示す線ＶI−ＶIに沿う断面図）である。
【００２５】
前記実施例では、口金４０の先端部４２が円形で、口金４０から延出する筆毛部３８の横断面も円形の丸筆で筆軸３０を構成した場合について説明したが、この第２の実施例では、口金４０Ａの先端開口部の横断面が扁平な形状で、口金４０Ａから延出する筆毛部３８の横断面も扁平な形状の平筆で筆軸３０Ａが構成されている。
【００２６】
即ち、筒形状の口金４０Ａの後端側の基端部４１Ａは、前記した第１の実施例における口金４０の基端部４１と同様の円筒形状であるが、口金４０Ａの先端側には、前方ほど上下幅が徐々に縮径するテーパ部４２Ａ１と、外形が軸方向に均一横断面なトラック形状の最先端部４２Ａ２とが設けられている。
【００２７】
そして、最先端部４２Ａ２における開口長手方向（開口左右方向）に対向する側縁部領域４２ａを除いた口金４０Ａ全体が均一の厚さ（例えば、ｔ１＝０．０２ｍｍ）に形成されているが、最先端部４２Ａ２における側縁部領域４２ａにおける厚さｔ２は、テーパ部４２Ａ１近傍の厚さ０．０２ｍｍから先端側ほど徐々に厚くなって、開口周縁部４２ａでの厚さが例えば０．０４ｍｍとなっている。
【００２８】
この第２の実施例においても、口金４０Ａの先端開口部の長手方向（開口左右方向）の間隔ｄが狭められた分、口金４０Ａから延出する筆毛部３８の扁平方向の幅ｄもそれだけ狭められて、平筆を液体化粧料容器１０の口部１２に挿入する際に、筆毛部３８の側面のワイパー開口周縁部１５ｂとの干渉が回避されて、折れ毛の発生が抑制される。
【００２９】
図７および図８は本発明の第３の実施例を示し、図７（ａ），（ｂ）は本発明の第３の実施例である液体化粧料塗布具の縦断面図で、図（ｂ）は図７（ａ）に示す線ＶII−ＶIIに沿う断面図、図８は口金の横断面図（図７（ａ）に示す線ＶIII−ＶIIIに沿う断面図）である。
【００３０】
この第３の実施例では、口金４０Ｂの先端部４２Ｂを横断面楕円形状に形成した平筆で筆軸３０Ｂが構成されている。即ち、先端部４２Ｂは、その長径寸法が基端部４１Ｂの外径と同一で、短径寸法が先端側に行くほど徐々に小さくなる横断面楕円形状となっている。
【００３１】
そして、口金４０Ｂの横断面円形の基端部４１Ｂから縮径する横断面楕円形状の先端部４２Ｂまでが一部の領域を除いて均一の厚さ（例えば、ｔ１＝０．０２ｍｍ）に形成されているが、先端部４２Ｂの開口長手方向（開口左右方向）に対向する側縁部４２ａにおける厚さｔ２が、０．０２ｍｍから先端側ほど徐々に厚肉に形成されて、開口周縁部４２ａの厚さは例えば０．０４ｍｍとなって、口金４０の先端開口面積が狭められている。
【００３２】
この第３の実施例においても、口金先端開口部の長手方向の間隔が狭められた分、口金４０Ｂから延出する筆毛部３８の扁平方向の幅もそれだけ狭められて、平筆３０Ｂを液体化粧料容器１０の口部１２に挿入する際に、筆毛部３８の側面のワイパー開口周縁部１５ａとの干渉が回避されて、折れ毛の発生が抑制される。
【００３３】
なお、前記実施例では、本発明をリップグロス塗布具に適用した場合について説明したが、液体口紅塗布具やアイライナーやエナメル塗布具などの他の液体化粧料塗布具にも同様に適用できることはいうまでもない。
【００３４】
【発明の効果】
以上の説明から明かなように、請求項１，２に係る液体化粧料塗布具によれば、筆毛部をワイパー開口周縁部と干渉しないように筆軸を液体化粧料容器（の口部）内に挿入できるので、筆軸を容器（の口部）に挿入する際に筆毛側面がワイパー開口周縁部と干渉して発生する折れ毛が原因で、筆軸を容器内にスムーズに挿入できないとか、化粧料の適切な塗布ができない等の不具合がない。
【００３５】
また、ワイパーの開口面積に対する口金先端部外周の占める面積は従来と同じであるため、筆軸を抜き出す際にはワイパーによって筆軸や口金に付着した余分の化粧料がしごき落とされるので、化粧料によって手がべとつくという不具合もない。
【００３６】
また、筆毛を口金に固定一体化する作業が簡単になるとともに、筆毛部が口金によって的確に保持されて、筆毛が抜けたり口金内で筆毛部が勝手に移動したりする不具合もない。
【００３７】
請求項１によれば、筆毛部をワイパー開口周縁部と干渉させることなく筆軸（平筆）を液体化粧料容器の開口部に挿入できるので、折れ毛により筆軸（平筆）を容器内にスムーズに挿入できないとか、化粧料の適切な塗布ができない等の不具合がない。
【００３８】
請求項２によれば、筆毛部をワイパー開口周縁部と干渉させることなく筆軸（丸筆）を液体化粧料容器の開口部に挿入できるので、折れ毛により筆軸（丸筆）を容器内にスムーズに挿入できないとか、化粧料の適切な塗布ができない等の不具合がない。
【図面の簡単な説明】
【図１】本発明の第１の実施例である液体化粧料塗布具の縦断面図である。
【図２】口金の拡大縦断面図である。
【図３】口金の水平断面図（図２に示す線III−IIIに沿う断面図）である。
【図４】ワイパーと口金開口部の内径の大きさを示す図である。
【図５】（ａ）本発明の第２の実施例である液体化粧料塗布具の縦断面図である。
（ｂ）図５（ａ）に示す線Ｖ−Ｖに沿う断面図である。
【図６】口金の横断面図（図５（ａ）に示す線線ＶI−ＶIに沿う断面図）である。
【図７】（ａ）本発明の第３の実施例である液体化粧料塗布具の縦断面図である。
（ｂ）は図７（ａ）に示す線ＶII−ＶIIに沿う断面図である。
【図８】口金の横断面図（図７（ａ）に示す線ＶIII−ＶIIIに沿う断面図）である。
【図９】従来の液体化粧料塗布具の断面図である。
【図１０】従来の液体化粧料塗布具の問題点を説明する説明図である。
【符号の説明】
１０化粧料容器
１１液体化粧料であるリップグロス液
１２筆軸挿入用の口部
１５ワイパー
１５ａワイパーのスリット
１５ｂワイパーの扱き部
３０筆軸(丸筆)
３０Ａ，３０Ｂ筆軸（平筆）
３６筆軸の軸部
３８筆毛部
４０口金
４２口金先端部
Ｓ１ワイパーの開口面積
Ｓ２口金の先端開口面積
Ｓ３口金から延出する筆毛部全体の横断面積
Ｓ４口金外周の占める面積[0001]
BACKGROUND OF THE INVENTION
The present invention is, for example, a liquid cosmetic applicator such as a lip gloss applicator, a liquid lipstick applicator, an eyeliner or an enamel applicator, and is attached to the brush shaft inside the mouth of the liquid cosmetic container for inserting the brush shaft. The present invention relates to a liquid cosmetic applicator provided with a wiper for handling cosmetics, and more particularly to a liquid cosmetic applicator provided with a brush shaft in which a brush is caulked and fixed to a tip portion by a cylindrical metal base. .
[0002]
[Prior art]
As shown in FIG. 9, this type of liquid cosmetic applicator includes a container 2 that contains liquid cosmetic 1 inside, and a brush shaft 5 that also serves as a cap 6 that can be inserted into the mouth 3 of the container 2. It is configured. A wiper 4 made of a flexible member such as resin or rubber is provided around the inner periphery of the mouth portion 3 of the cosmetic container, and the brush shaft 5 is inserted from the cosmetic container 2 (the mouth portion 3). When extracting, the handling part 4a of the wiper 4 handles the cosmetics adhering to the shaft part 5a. A brush 7 is caulked and fixed to the tip of the shaft portion 5 a of the brush shaft 5 by a cylindrical metal base 6. Further, the tip side 6a of the base 6 is formed in a tapered shape with a reduced diameter so that the brush shaft 5 can be smoothly inserted into the wiper 4.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional applicator, since the opening area of the wiper 4 (the handling portion 4a) is smaller than the outer shape of the base 6, the brush shaft 5 is connected to the cosmetic container 2 (the mouth of the cosmetic container 2) as shown in FIG. When inserted in 3), the side surface of the brush 7 is likely to be broken, and the side surface of the brush 7 is broken by interference with the peripheral edge of the opening of the wiper 4. For this reason, there was a problem that the brush shaft 5 could not be smoothly inserted into the cosmetic container 2 (or its mouth 3) or the cosmetic 1 could not be properly applied due to the broken hair.
[0004]
In order to avoid this broken hair, the inventor considered that the side surface of the brush 7 would not interfere with the opening peripheral edge of the wiper 4 if the base 6 was thinned to reduce the cross-sectional area of the entire brush 7. However, since the ironing action of the wiper 4 is reduced when the entire base 6 is thinned, the diameter of the entire base 6 cannot be reduced. Further, if the thickness of the entire base 6 is increased, the amount of the brush 7 that can be bound is reduced as the inner diameter of the base 6 becomes smaller, and the amount of cosmetics that can be held on the brush 7 is also reduced. Accordingly, if the thickness of the opening of the tip of the base 6 is increased inward, the cross-sectional area of the entire brush 7 extending from the base 6 is reduced, and interference with the wiper 4 on the side of the brush can be avoided. Then, it was considered that the inner diameter of the entire mouthpiece 6 that caulks the brush 7 becomes small and the binding amount of the brush 7 does not decrease.
[0005]
Then, when a prototype was actually made and confirmed, it was confirmed that it was very effective, and the present invention was proposed.
[0006]
The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a liquid cosmetic applicator in which the brush does not interfere with the wiper when the brush shaft is inserted into the container mouth. It is in.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, in the liquid cosmetic applicator according to claims 1 and 2, a liquid cosmetic container provided with a mouth opening upward, and a taper that can be taken in and out from the mouth. A brush shaft in which a brush portion is caulked and fixed to the tip of the shaft portion by a cylindrical metal base, and the shaft portion inside the mouth portion of the container is connected to the shaft portion when the shaft portion of the brush shaft is extracted from the mouth portion. in wiper squeezing the attached cosmetics circumferentially provided liquid cosmetic applicator, the tip end of the mouthpiece of the brush shaft, the circumferential direction of at least part of the region and forming a tapered shape, the tapered shape The thickness of the formed region is gradually increased inward toward the tip opening side so that the tip end opening area of the base with respect to the opening area of the wiper is narrowed.
(Operation) The cross-sectional area of the entire brush portion extending from the mouthpiece is small because the opening area of the tip of the mouthpiece relative to the opening area of the wiper is small, and the brush portion is inserted when the brush shaft is inserted into the mouth of the liquid cosmetic container. The side surface hardly interferes with the peripheral edge of the wiper opening. On the other hand, since the area occupied by the outer periphery of the base (tip) with respect to the opening area of the wiper is the same as before, the insertability of the shaft part into the wiper opening and the wiping action of the wiper when extracting the brush shaft from the wiper opening are the same as before. does not change.
[0008]
Further, in the liquid cosmetic applicator according to claims 1 and 2, a large number of artificial hairs made of synthetic resin bristle in which the brush portion is formed in a shape that is as thin as animal hair or the tip, and the rear end thereof The unit is composed of a brush-bundling integrated unit whose cross section is smaller on the tip side.
(Function) The brush part focuses animal hair (animal hair has a shape that is thinner toward the tip) or a synthetic resin bristle that is formed in a shape that is thinner toward the tip, and the rear end portion Is composed of a brush binding unit, and the brush portion has a pointed shape toward the tip. For this reason, first, when the brush part (brush binding unit) is inserted into the base from the brush tip side, the tip opening of the base is reduced in diameter, but the inner peripheral surface on the tip side is tapered. Therefore, the brush portion (brush binding unit) can be smoothly inserted to a predetermined position in the base where the brush tip protrudes from the base by a predetermined amount. Secondly, the brush part (brush binding unit) inserted into the base is bonded and fixed to the inner side of the base by using, for example, an adhesive. Since the inner peripheral surface is uniformly pressed against the entire outer surface of the brush portion (brush binding unit), the positioning of the brush portion (brush binding unit) with respect to the base is easy and the brush portion (brush) The work of bonding and fixing the binding unit) to the base becomes easy.
[0009]
Moreover, in Claim 1, the said brush shaft is comprised by the flat brush of the shape where the cross section of the bristle part extended from the said nozzle | tip tip opening part and a nozzle | tip tip opening part is flat, and the flat in the said nozzle | tip tip side. The thickness of the region facing the major axis direction of the tip end of the base is thicker toward the tip side, and the inner peripheral surface of the tip end side of the base is configured to have a smooth shape that follows the side shape of the brush portion. .
(Action) Flat brushes with a flat cross-section at the tip opening and a flat cross-section of the entire brush section extending from the base generally apply to the flat side of the entire brush section. Since it is used (applied) so that it touches the surface, the entire flat brush part tends to become flatter (flatness increases), but the distance in the longitudinal direction of the mouthpiece tip opening is reduced. Therefore, both ends of the flat width of the brush portion extending from the base (both sides in the flat direction) are narrowed accordingly, and when the flat brush is inserted into the mouth of the liquid cosmetic container, Interference with the periphery of the wiper opening is avoided, and the generation of broken hair is suppressed.
[0010]
In claim 2, the brush shaft is configured by a circular brush whose cross section of the brush tip portion extending from the tip opening portion and the tip opening portion is circular, and is formed on the tip end side formed in the tapered shape. The peripheral thickness is thicker toward the tip side, and the inner peripheral surface on the tip side of the base is configured to be a smooth shape that follows the side shape of the brush portion.
(Function) In the round brush, the cross-section of the opening at the tip of the base is circular, and the cross-section of the entire brush portion extending from the base is also circular. Since the diameter is reduced, when the round brush is inserted into the opening of the liquid cosmetic container, interference with the peripheral edge of the wiper opening on the side surface of the brush is avoided, and the generation of broken hair is suppressed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described based on examples.
[0012]
1 to 4 show a first embodiment of the present invention, FIG. 1 is a longitudinal sectional view of a liquid cosmetic applicator according to the first embodiment of the present invention, FIG. 2 is an enlarged longitudinal sectional view of a base, FIG. 3 is a horizontal sectional view of the base (cross-sectional view taken along line III-III shown in FIG. 2), and FIG. 4 is a diagram showing the inner diameters of the wiper and the base opening.
[0013]
In these drawings, reference numeral 10 denotes a cylindrical elongated cosmetic container having a mouth portion 12 opened upwardly and containing a lip gloss liquid 11 therein, and a mouth for inserting a writing shaft smaller than the inner diameter of the container 10. A male screw portion 13 is formed on the outer periphery of the portion 12 so that the female screw portion 33 of the cap 32 integrated with the brush shaft 30 can be screwed together.
[0014]
On the other hand, a flexible plastic-made cylindrical inner plug 14 is fitted inside the mouth portion 12, and a brush near the inner lower end of the inner plug 14 that protrudes into the container 10. When the shaft portion 36 of the shaft 30 is withdrawn, a wiper 15 is formed that handles and cleans the lip gloss liquid 11 attached to the shaft portion 36.
[0015]
That is, the wiper 15 is formed in a tapered cylindrical shape (see FIG. 10 showing a conventional wiper) that extends obliquely downward from the inside of the inner plug 14 and has a smaller diameter toward the lower end side. The front end portion of the wiper 15 is provided with longitudinal slits 15a (see FIG. 4) at four locations equally divided in the circumferential direction to increase the flexibility of the wiper 15. Each of the slits 15a divided in the circumferential direction is provided with the slits 15a. The divided piece is in close contact with the outer surface of the shaft portion 36 of the brush shaft 30 to constitute a handling portion 15b that handles the lip gloss liquid adhering to the shaft portion 36.
[0016]
A brush portion 38 is fixed to the tip of the shaft portion 36 of the brush shaft 30 via a cylindrical base 40 made of a metal (for example, aluminum) whose diameter is reduced on the tip side. The base 40 is configured by a rear end side base end portion 41 formed to have the same outer diameter as the shaft portion 36 and a tapered tip end portion 42 having a diameter reduced toward the front end side.
[0017]
Further, the brush portion 38 focuses one hair (natural animal hair or synthetic hair made of synthetic resin generally called bristle) narrower toward the tip, and binds the rear end portion 38a (beast animal). In the case of bristles, the bristle is joined together by an adhesive, and in the case of bristle, it is joined and integrated as a bristle binding unit, and the cross section is smaller toward the tip side. Then, the brush portion 38 is inserted from the rear end side of the base 40 so that the tip portion protrudes forward of the base 40, and the rear end portion of the brush portion 38 is fixed to the inner side of the base 40 by the adhesive 44. .
[0018]
And the front-end | tip part of the axial part 36 is press-fitted in the rear-end part of the nozzle | cap | die 40 which integrated this brush part 38, and the rear-end part of the nozzle | cap | die 40 is being fixed by the dowel caulking in three circumferential directions. Reference numeral 36 a in FIG. 2 is a protrusion provided at the tip of the shaft portion 36 for abutting the rear end portion 38 a of the brush portion 38 and holding the brush portion 38 so as not to rattle in the base 40. Is.
[0019]
The outer diameter of the base end portion 41 on the rear end side of the base 40 is formed flush with the shaft portion 36 and does not hinder the wiping action of the wiper 14. On the other hand, the tip portion 42 of the base 40 has a brush portion 38 so that the brush shaft 30 (base 40) can be smoothly inserted into the opening of the wiper 15 and the outer peripheral surface of the brush portion 38 can be gripped uniformly. It is formed in the taper shape which followed the side shape of this.
[0020]
Further, the thickness of the base end portion 41 of the base 40 is uniform in the axial direction, but the thickness of the tapered tip end portion 42 is gradually increased toward the inside in the radial direction toward the tip end side. As shown in FIG. 4, the tip opening area S2 of the base 40 is narrowed by a thickness corresponding to the tip opening area S2 ′ when the whole base 40 is formed with a uniform thickness. For example, the thickness t1 of the base end portion 41 of the base 40 is 0.02 mm, the thickness t2 of the distal end portion 42 gradually increases from 0.02 mm toward the distal end side, and the thickness of the peripheral edge portion of the opening is 0. It is 04 mm.
[0021]
For this reason, as shown in FIG. 4, the cross-sectional area S3 of the entire brush portion 38 extending from the base 40 is also narrowed by the amount that the base end opening area S2 with respect to the opening area S1 of the wiper 15 is narrow. When inserted into the mouth portion 12 of the liquid cosmetic container 10, the side surface 38b of the brush portion 38 is unlikely to interfere with the wiper opening peripheral portion 15b.
[0022]
Therefore, since the brush shaft 30 (brush portion 38) can be inserted into the liquid cosmetic container 10 without causing the brush portion 38 to interfere with the opening peripheral edge of the wiper 15, the brush shaft 30 can be inserted into the container 10. The side surface 38a of the brush portion 38 interferes with the wiper opening peripheral edge portion 15b, so that the brush shaft 30 cannot be smoothly inserted into the container 10 or the cosmetic 11 cannot be properly applied. There are no defects.
[0023]
Further, since the area S4 occupied by the base 40 (the base end portion 41) with respect to the opening area S1 of the wiper 15 is the same as the conventional one, when the brush shaft 30 is extracted, the wiper 15 adheres to the shaft part 36 and the base 40. Since the excess cosmetic material is surely scraped off, there is no problem that the hand sticks to the cosmetic material adhering to the shaft portion 36 or the base 40.
[0024]
5 and 6 show a second embodiment of the present invention, FIG. 5 (a) is a longitudinal sectional view of a liquid cosmetic applicator according to the second embodiment of the present invention, and FIG. FIG. 6 is a cross-sectional view taken along line VV shown in FIG. 5A, and FIG. 6 is a cross-sectional view of the base (cross-sectional view taken along line VI-VI shown in FIG. 5A).
[0025]
In the above-described embodiment, the case where the tip end portion 42 of the base 40 is circular and the brush shaft 38 is formed of a circular brush with a circular cross section of the brush portion 38 extending from the base 40 has been described. In the embodiment, the brush shaft 30A is constituted by a flat brush whose cross section of the tip opening of the base 40A is flat and whose cross section of the brush portion 38 extending from the base 40A is also flat.
[0026]
That is, the base end portion 41A on the rear end side of the cylindrical base 40A has a cylindrical shape similar to the base end portion 41 of the base 40 in the first embodiment described above, but on the front end side of the base 40A, A taper portion 42A1 whose upper and lower widths are gradually reduced in diameter toward the front, and a track-shaped most distal portion 42A2 whose outer shape has a uniform cross section in the axial direction are provided.
[0027]
The entire base 40A excluding the side edge region 42a facing the opening longitudinal direction (opening left-right direction) in the most advanced portion 42A2 is formed to have a uniform thickness (for example, t1 = 0.02 mm). The thickness t2 in the side edge region 42a in the forefront portion 42A2 gradually increases from the thickness 0.02mm in the vicinity of the tapered portion 42A1 toward the tip side, and the thickness at the opening peripheral portion 42a is, for example, 0.04mm. It has become.
[0028]
Also in the second embodiment, the width d in the flat direction of the brush portion 38 extending from the base 40A is correspondingly reduced by the distance d in the longitudinal direction (opening left-right direction) of the tip opening of the base 40A. When the flat brush is inserted into the mouth portion 12 of the liquid cosmetic container 10, the interference with the wiper opening peripheral edge portion 15b on the side surface of the brush portion 38 is avoided, and the occurrence of broken hair is suppressed. .
[0029]
7 and 8 show a third embodiment of the present invention, and FIGS. 7A and 7B are longitudinal sectional views of a liquid cosmetic applicator according to the third embodiment of the present invention. b) is a cross-sectional view taken along line VII-VII shown in FIG. 7A, and FIG. 8 is a transverse cross-sectional view of the die (cross-sectional view taken along line VIII-VIII shown in FIG. 7A).
[0030]
In the third embodiment, the writing shaft 30B is composed of a flat brush in which the tip 42B of the base 40B is formed in an elliptical cross section. That is, the distal end portion 42B has the same long diameter as the outer diameter of the base end portion 41B, and has an elliptical cross section that gradually decreases as the short diameter dimension increases toward the distal end side.
[0031]
The base end portion 41B having a circular cross section of the base 40B and the tip end portion 42B having an elliptical cross section having a reduced diameter are formed to have a uniform thickness (for example, t1 = 0.02 mm) except for a part of the region. However, the thickness t2 of the side edge portion 42a facing the opening longitudinal direction (opening left-right direction) of the tip end portion 42B is gradually increased from 0.02 mm toward the tip end side, and the opening peripheral edge portion 42a The thickness is 0.04 mm, for example, and the tip opening area of the base 40 is narrowed.
[0032]
Also in the third embodiment, the width in the flat direction of the brush portion 38 extending from the base 40B is reduced by the amount corresponding to the reduction in the distance in the longitudinal direction of the base end opening, and the flat brush 30B is made liquid. When inserting into the mouth part 12 of the cosmetic container 10, interference with the wiper opening peripheral part 15a on the side surface of the brush part 38 is avoided, and the generation of broken hair is suppressed.
[0033]
In the above embodiment, the case where the present invention is applied to a lip gloss applicator has been described. However, the present invention can also be applied to other liquid cosmetic applicators such as a liquid lipstick applicator, an eyeliner, and an enamel applicator. Needless to say.
[0034]
【The invention's effect】
As is clear from the above description, according to the liquid cosmetic applicator according to claims 1 and 2 , the brush shaft is placed in the liquid cosmetic container (the mouth thereof) so as not to interfere with the peripheral edge of the wiper opening. The brush shaft cannot be smoothly inserted into the container because of the broken hair that occurs when the brush side is interfered with the periphery of the wiper opening when the brush shaft is inserted into the container. There are no problems such as inability to apply cosmetics properly.
[0035]
Also, since the area occupied by the outer periphery of the tip of the base with respect to the opening area of the wiper is the same as before, when the brush shaft is pulled out, the extra cosmetic material attached to the brush shaft and the base is wiped off by the wiper. There is no problem of stickiness.
[0036]
In addition, the work of fixing and integrating the brush into the base becomes easy, and there is also a problem that the brush part is accurately held by the base, so that the brush falls out or the brush part moves freely in the base. Absent.
[0037]
According to the first aspect , the brush shaft (flat brush) can be inserted into the opening of the liquid cosmetic container without causing the brush portion to interfere with the peripheral edge of the wiper opening. There are no inconveniences such as inability to insert smoothly into the inside or proper application of cosmetics.
[0038]
According to the second aspect , the brush shaft (round brush) can be inserted into the opening of the liquid cosmetic container without causing the brush portion to interfere with the peripheral edge of the wiper opening. There are no inconveniences such as inability to insert smoothly into the inside or proper application of cosmetics.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a liquid cosmetic applicator according to a first embodiment of the present invention.
FIG. 2 is an enlarged longitudinal sectional view of a base.
FIG. 3 is a horizontal sectional view of the base (a sectional view taken along line III-III shown in FIG. 2).
FIG. 4 is a diagram showing the size of the inner diameter of a wiper and a base opening.
FIG. 5A is a longitudinal sectional view of a liquid cosmetic applicator according to a second embodiment of the present invention.
(B) It is sectional drawing which follows the line VV shown to Fig.5 (a).
6 is a cross-sectional view of the base (a cross-sectional view taken along line VI-VI shown in FIG. 5A). FIG.
FIG. 7A is a longitudinal sectional view of a liquid cosmetic applicator according to a third embodiment of the present invention.
(B) is sectional drawing which follows the line VII-VII shown to Fig.7 (a).
8 is a cross-sectional view of the base (a cross-sectional view taken along line VIII-VIII shown in FIG. 7A).
FIG. 9 is a cross-sectional view of a conventional liquid cosmetic applicator.
FIG. 10 is an explanatory diagram for explaining a problem of a conventional liquid cosmetic applicator.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Cosmetic container 11 Lip gloss liquid 12 which is liquid cosmetics Mouth part 15 for inserting a brush shaft 15 Wiper 15a Wiper slit 15b Wiper handle 30 Brush shaft (round brush)
30A, 30B Brush axis (flat brush)
36 Shaft portion 38 Brush portion 40 Base 42 Base tip S1 Wiper opening area S2 Tip opening area S3 Cross-sectional area of the entire brush portion extending from the base S4 Area occupied by the periphery of the base

Claims

A liquid cosmetic container provided with a mouth portion that opens upward, and a brush shaft that can be inserted and removed from the mouth portion, and the brush portion is caulked and fixed to the tip of the shaft portion by a metal cap having a tapered cylindrical shape. In the liquid cosmetic applicator provided with a wiper around the mouth portion of the container, the wiper handling the cosmetic material attached to the shaft portion when the shaft portion of the brush shaft is extracted from the mouth portion,
The brush part is made of animal hair or a synthetic resin bristle that is formed so as to be thinner toward the tip, and a large number of artificial hairs made of synthetic resin bristles are bundled. Composed of units,
At the tip end side of the base of the brush shaft, at least a part of the region in the circumferential direction is formed in a tapered shape, and the thickness of the region formed in the tapered shape gradually increases inward toward the tip opening side. A liquid cosmetic applicator that is formed thick and has a base opening area that is narrower than the opening area of the wiper,
The brush shaft is composed of a flat brush having a flat cross-section of the tip end opening and the brush tip extending from the tip end opening, and the major axis direction of the flat tip end opening on the tip end side A liquid cosmetic applicator characterized in that the thickness of the region facing the tip is thicker toward the tip side, and the inner peripheral surface at the tip side of the base is formed in a smooth shape following the shape of the side surface of the brush portion .

A liquid cosmetic container provided with a mouth portion that opens upward, and a brush shaft that can be inserted and removed from the mouth portion, and the brush portion is caulked and fixed to the tip of the shaft portion by a metal cap having a tapered cylindrical shape. In the liquid cosmetic applicator provided with a wiper around the mouth portion of the container, the wiper handling the cosmetic material attached to the shaft portion when the shaft portion of the brush shaft is extracted from the mouth portion,
The brush part is made of animal hair or a synthetic resin bristle that is formed so as to be thinner toward the tip, and a large number of artificial hairs made of synthetic resin bristles are bundled. Composed of units,
At the tip end side of the base of the brush shaft, at least a part of the region in the circumferential direction is formed in a tapered shape, and the thickness of the region formed in the tapered shape gradually increases inward toward the tip opening side. A liquid cosmetic applicator that is formed thick and has a base opening area that is narrower than the opening area of the wiper,
The brush shaft is composed of a circular brush with a circular cross section of the brush tip opening and the brush portion extending from the mouth tip opening, and the thickness of the entire circumference on the tip end side formed in the tapered shape. A liquid cosmetic applicator characterized in that the tip is thicker and the inner peripheral surface on the tip end side is formed in a smooth shape following the shape of the side surface of the brush portion .